JP2017502771A - Lumbar support system - Google Patents

Abstract

An adjustable support system for a seat having a fixed frame includes a support that is movable from a first position to a second position relative to the frame. An actuator is coupled only to the support and is configured to move the support between a first position and a second position. A member is operatively associated with the actuator and can be moved by the actuator. The flexible cable has a first end connected to the member for travel along the length of the member and a second end connected to the fixed frame, so that the member by the actuator Directing the flexible cable to move the support between the first position and the second position. [Selection] Figure 2

Description

  [0001] The present invention relates to a lumbar support system for use in a seat, and more specifically to a lumbar support system for use in a vehicle seat.

  [0002] Many lumbar support systems use electromechanical actuators that transfer loads via Bowden cables. However, Bowden cables often provide poor overall system efficiency, and such systems require numerous components to include a large and heavy motor (s) for operation. In addition, these systems tend to make noise during operation.

  [0003] In one embodiment of a lumbar support system for a seat back, the system includes a fixed frame and a lumbar support movable from a first position to a second position coupled to the fixed frame. Contains. A motor is connected to the lumbar support. A threaded member is operatively engaged with the motor so that the motor rotates the threaded member about an axis. The first travel member is engaged with the threaded member and the second travel member is engaged with the threaded member. The rotation of the threaded member translates the first travel member and the second travel member in opposite axial directions along the threaded member. A spacer is disposed between the first traveling member and the second traveling member. The spacer is configured to slide over the threaded member. A first flexible cable is operatively associated with the lumbar support, a first end coupled to the first travel member for integral movement therewith, a second end coupled to the stationary frame. And an intermediate portion. A second flexible cable is operatively associated with the lumbar support, a first end coupled to the second traveling member for integral movement therewith, a second end coupled to the stationary frame, and the second support. And an intermediate portion. The intermediate portion of the first flexible cable and the intermediate portion of the second flexible cable move the waist support from the first position to the second position in response to the translation of the first traveling member and the second traveling member. Operates as follows.

  [0004] In one embodiment of a support system for a seat back, the system includes a fixed frame and a support. The support is in the form of a contour mat that is adapted to be mounted on a fixed frame. The contour mat includes an outer wire and a plurality of crossing wires disposed laterally. A first flexible cable is operatively coupled to the frame and has a first end, a second end, and a cable body. A second flexible cable is operatively coupled to the frame and has a first end, a second end, and a cable body. An actuator is configured to move the first flexible cable and the second flexible cable relative to the support. As the actuator operates, contact between the support and at least one cable body of the first flexible cable and the second flexible cable moves the support from the first position to the second position. The actuator is connected only to the outer wire arranged on the side of the support.

  [0005] In an embodiment of a lumbar support system for a seat back having a fixed frame, the system includes a lumbar support movable from a first position to a second position coupled to the fixed frame; And a motor for moving the support. A threaded member is operatively associated with the motor so that the motor rotates the threaded member about an axis. A traveling member is operatively associated with the threaded member so that rotation of the threaded member translates the traveling member along the threaded member. The system further includes a flexible cable having a first end and a second end. The first end is connected to the traveling member for integral movement therewith, and the second end is connected to the stationary frame so that translation of the traveling member in response to rotation of the threaded member is achieved. Move the lumbar support element from the first position to the second position.

  [0006] In an embodiment of an adjustable support system for a seat having a fixed frame, the adjustable support system comprises a support that is movable from a first position to a second position relative to the frame. ing. An actuator is coupled only to the support and is configured to move the support between a first position and a second position. A member is operatively associated with the actuator and is movable by the actuator and has a length. The flexible cable has a first end and a second end. The first end is connected to the member for travel along the length of the member, and the second end is connected to the fixed frame so that movement of the member by the actuator causes the support to be attached to the flexible cable. Aim to move between the first position and the second position.

  [0007] Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.

[0008] FIG. 1 is a perspective view of a vehicle seat including a lumbar support system. [0009] FIG. 2 is a perspective view of the lumbar support system of FIG. [0010] FIG. 2 is an exploded view of the lumbar support system of FIG. [0011] FIG. 2 is an exploded view of the drive mechanism assembly of the lumbar support system of FIG. [0012] FIG. 4 is a cross-sectional view of the lumbar support system in the retracted position, taken along line 4-4 of FIG. [0013] FIG. 4 is a cross-sectional view of the lumbar support system in the extended position, taken along line 4-4 of FIG. [0014] FIG. 5 is a perspective view of a vehicle seat including another lumbar support system. [0015] FIG. 7 is a perspective view of the lumbar support system of FIG. [0016] FIG. 7 is an exploded view of the lumbar support mechanism of the lumbar support system of FIG. [0017] FIG. 9 is a cross-sectional view of the lumbar support system in the retracted position, taken along line 9-9 of FIG. [0018] FIG. 9 is a cross-sectional view of the lumbar support system in the extended position, taken along line 9-9 of FIG. [0019] FIG. 7 is a side view of the lumbar support system of FIG. 6 with one lumbar support mechanism extended and the other lumbar support mechanism retracted. [0020] FIG. 7 is a side view of the lumbar support system of FIG. 6 with one lumbar support mechanism retracted and the other lumbar support mechanism extended. [0021] FIG. 6 is a perspective view of another lumbar support system having a single lumbar support mechanism. [0022] FIG. 6 is a partial perspective view of a vehicle seat including another lumbar support system. [0023] FIG. 15 is a perspective view of the lumbar support system of FIG. [0024] FIG. 15 is an exploded view of the lumbar support mechanism of the lumbar support system of FIG. [0025] FIG. 15 is a partial front view of the lumbar support system of FIG. [0026] FIG. 15 is a partial front view of the lumbar support system of FIG. 14 in a first position. [0027] FIG. 15 is a partial side view of the lumbar support system of FIG. 14 in a first position. [0028] FIG. 15 is a partial front view of the lumbar support system of FIG. 14 in a second position. [0029] FIG. 15 is a partial side view of the lumbar support system of FIG. 14 in a second position. [0030] FIG. 6 is a perspective view of another lumbar support system for a vehicle seat. [0031] FIG. 23 is an exploded view of the lumbar support system of FIG. [0032] FIG. 23 is a perspective view of the lumbar support system of FIG. 22 in an extended position. [0033] FIG. 23 is a side view of the lumbar support system of FIG. 22 in a retracted position. [0034] FIG. 23 is a side view of the lumbar support system of FIG. 22 in an extended position. [0035] FIG. 12 is a perspective view of another lumbar support system for a vehicle seat. [0036] FIG. 28 is an exploded view of the lumbar support system of FIG. [0037] FIG. 28 is a perspective view of the lumbar support system of FIG. 27 in an extended lowered position. [0038] FIG. 28 is a perspective view of the lumbar support system of FIG. 27 in a retracted raised position. [0039] FIG. 28 is a perspective view of the lumbar support system of FIG. 27 in an extended raised position. [0040] FIG. 6 is an exploded view of another lumbar support system. [0041] FIG. 33 is a rear perspective view of the lumbar support system of FIG. [0042] FIG. 33 is a partial front perspective view of the lumbar support system of FIG. [0043] FIG. 33 is a perspective view of one of three additional orientations of the lumbar support system of FIG. [0043] FIG. 33 is a perspective view of one of three additional orientations of the lumbar support system of FIG. [0043] FIG. 33 is a perspective view of one of three additional orientations of the lumbar support system of FIG. [0044] FIG. 12 is a rear perspective view of another lumbar support system. [0045] FIG. 39 is a partial front perspective view of the lumbar support system of FIG. [0046] FIG. 39 is a perspective view of one of three additional orientations of the lumbar support system of FIG. [0046] FIG. 39 is a perspective view of one of three additional orientations of the lumbar support system of FIG. [0046] FIG. 39 is a perspective view of one of three additional orientations of the lumbar support system of FIG.

  [0047] Before describing any embodiment of the present invention in detail, it should be understood that the present invention is not limited to the details of construction shown in the following description or the accompanying drawings. It is not limited to the arrangement of items and components. The invention has room for other embodiments and room for practice or implementation in various ways. It should also be understood that the wording and terminology used herein is for illustrative purposes and should not be considered limiting. The use of “including”, “comprising” or “having” and variations thereof herein is not limited to the items listed thereafter and their equivalents as well as additional items. It means to cover. As used herein and in the appended claims, the terms “upper”, “lower”, “top”, “bottom”, “front”, “rear”, and other directions are any It is not intended to require a specific orientation of this, but rather is used for illustrative purposes only.

  [0048] FIG. 1 depicts a seat 10, which may be any vehicle seat in a vehicle cabin for purposes of the following description, but the seat 10 is not necessarily limited to vehicle applications. It is not done. The seat 10 generally includes a seat bottom 14 (shown in phantom) and a seat back 18 for supporting the seat occupant in the horizontal and vertical directions, respectively. The seat back portion 18 can be folded around a pivot 22 with respect to the seat frame. A frame 26 covered by an overlying cushion 30 (shown in phantom) provides structural integrity for the backrest 18 and includes a pair of vertical support members 34, 38. A lumbar support system 100 extends between and is coupled to the vertical support members 34 and 38 to allow an adjustable lumbar support for a seated occupant.

  [0049] As shown in FIG. 1, the lumbar support system 100 includes a lumbar support element or basket 110 positioned intermediate between the vertical support members 34 and 38. The basket 110 presents a substantially flat front surface 114 that functions as a pressing surface against the lumbar region of the occupant close to the seat occupant. Additional cushions, pads, or other materials for increased comfort are shown, but not shown, on the seat back 18 and between the front 114 and the seat occupant.

  [0050] FIGS. 2 and 3 depict the lumbar support system 100 with reference to the proximal end 120 (proximal to the drive mechanism assembly 230) and the distal end 124. FIG. The upper portion 130 and the lower portion 134 of the cage 110 are formed to include a plurality of openings 138 separated by stiffening ribs 142 that are generally interconnected by a border 146 on the rear surface 150 of the cage 110. Yes. A central portion 154 between the upper portion 130 and the lower portion 134 of the cage 110 includes a mounting surface 158. The mounting surface 158 supports two sets of opposite guides 162, each set comprising an upper rail 166 and a lower rail 170 that extend laterally along the central portion 154, which rails are Converging toward the proximal end 120 and the distal end 124 of the cage 110, respectively, forms a cable channel 180, the purpose of which is described below.

  [0051] A pair of mounting pins 184 project rearward from the mounting surface 158 to be received in mounting holes 188 in the rigid spindle rail 192. The spindle rail 192 includes a set of upper tabs 196 and lower tabs (not shown), and each tab has a mouth 200 in the center. When positioned adjacent to the mounting surface 158, the tab 196 engages the hooks 204 opposite to each other, and the hook 204 along with the mounting pins 184 aligns and secures the spindle rail 192 to the cage 110. Additional positioning and alignment is provided by the cooperation of the protrusions 208 on the tabs 196 on the top and bottom sides and the slot 212 on the mounting surface (see also FIG. 1). Structural integrity is maintained by contact between the block 216 and the inner surface of the spindle rail 192.

  [0052] Referring to FIGS. 2, 3, and 3A, the drive mechanism assembly or actuator 230 includes a motor 234, a motor shaft with a pinion 238, a housing 242, a worm gear 246, a cap 250, and a drive shaft 254. It is out. A motor 234 that is secured to the housing 242 with fasteners 256 includes a D.P. C. Although it is desirable to be a reversible motor, it can be any type of reversible motor suitable for the application, and the dimensions and power can be varied as required. A worm gear 246 operatively engaged with the motor shaft pinion 238 allows for orthogonal diversion of power applied to the drive shaft 254 and increased output torque from the motor 234. Gear 246 is housed within housing 242, which further couples motor 234 to the remaining drive mechanism assembly components. Spline drive shaft 254 meshes with worm gear 246 for co-rotation and power transmission during operation. A cap 250 attached to the housing 242 provides additional protection for the worm gear 246 and the drive shaft 254 and secures the motor 234 to the spindle rail 192.

  [0053] A threaded member or spindle 260 is coupled to the drive shaft 254 and extends a substantial portion of the spindle rail 192. Spindle 260 has a proximal threaded end 264 and a distal threaded end 268. As depicted, the proximal thread is a right hand thread and the distal thread is a left hand thread, although alternate orientations may be interchanged in alternative embodiments. Proximal threaded end 264 is fixed in rotation to and defined within the end of drive shaft 254 such that spindle 260 rotates integrally with drive shaft 254 when motor 234 operates. Is received in the opening 272. Around each threaded end 264, 268 of the spindle 260 is a travel member or slider, a proximal slider 280 and a distal slider 284. Each slider 280, 284 has an internally threaded body for engagement with the spindle 260 and opposite grooves engaged with opposite edges 300, 304 formed as part of the spindle rail 192. 290, 292, 294, 296. Opposite threaded spindle ends 264, 268 are integral with the groove / edge interface of the slider 280, 284 against the spindle rail 192, opposite each other along the spindle 260 of the slider 280, 284 as the spindle rotates. Causes translational motion. A bumper 308 placed adjacent to the drive shaft 254 provides one travel end limit for the proximal slider 280. A second bumper 312 adjacent to the centrally located stopper 316 establishes a second travel limit for the proximal slider 280 and defines a range of motion.

  [0054] Proximal flexible cable 320 and distal flexible cable 324 are coupled to proximal slider 280 and distal slider 284, respectively. Each cable 320, 324 includes a first end 330, a second end 334, and a cable body 338. The first end 330 has a connector 344 that fits within the body of the slider for integral movement with the respective slider 280, 284. The cable body 338 of each cable 320, 324 extends from the first end 330 and defines an intermediate section 350, a portion of which is substantially disposed within the respective channel 180. Intermediate section 350 terminates at a second end 334 that is coupled to coil end fitting 354 (eg, cable 324) or alternatively is connected to hook fitting 356 (eg, cable 320). The coil end fitting 354 is adapted to engage a first end 358 of a spring 362, such as a torsion spring. Although shown in conjunction with the distal end 124, the spring 362 can be actuated with one of the second ends 334 of each of the proximal and distal cables 320, 324 or on both sides. The spring 362 includes a second end 366 that is configured to attach to the hook end 370 of the hinge 374 so that the lumbar can be seen both when the occupant first sits and during operation to enhance occupant comfort. A limited amount of deflection of the support system 100 is allowed. The hook 320 of the cable 320 is wound around a part of the hook end 370 of the hinge 374 opposite to each other.

  [0055] The hinge 374 is formed as a “living” hinge that joins both the upper portion 130 and the lower portion 134 of the cage 110 opposite the hook end 370. As depicted, hinge 374 includes first, second, and third pivot points 380, 384, 388, although fewer or more than three pivot points are within the scope. . As shown in FIGS. 2, 4, and 5, the pivot points 380, 384, 388 are arranged to eliminate interference with the motor 234 during the travel of the cage 110. The hinge 374 and the basket 110 are preferably formed as a single piece. Alternatively, the hinge 374 may be a separate piece secured to the cage 110 in a manner known to those skilled in the art. The hook end 370 of the hinge 374 is formed to fit from above onto a connecting element in the form of a mounting wire 390 that is secured to the respective vertical support members 34, 38 (see FIG. 1) of the frame 26. ing.

  [0056] In operation, the seat occupant activates the power actuator 230 using an electrically operated switch that is preferably located adjacent to the seat back 18 or seat bottom 14. With reference to FIGS. 4 and 5, the lumbar support system can be placed in any position between the fully retracted position (FIG. 4) and the fully extended position (FIG. 5) when the actuator 230 is activated. it can. As the motor 234 is energized, the engagement of the worm gear 246 rotates the drive shaft 254 and simultaneously rotates the spindle 260. If the lumbar support system 100 is activated to retract the cage 110, the spindle 260 rotates in the first direction. If the lumbar support system 100 is activated to extend the cage 110, the spindle 260 rotates in the opposite second direction. The user can select which direction to start with an electric operation switch. Due to the interaction between the grooves 290, 292, 294, 296 of the sliders 280, 284 and the edges 300, 304 of the spindle rail 192, rotation of the spindle 260 translates the sliders 280, 284 and moves one slider proximally ( 120) and the other slider in the distal direction (124).

  [0057] If the cage 110 wishes to extend the cage 110 to provide more lumbar support, clockwise rotation of the spindle 260 (as viewed from the distal direction 124) causes the proximal slider 280 to move along the spindle 260. Run in the distal direction and move the distal slider 284 in the proximal direction, ie, move the slider 280 and slider 284 closer together with their attached cables 320, 324. As slider 280 and slider 284 converge, the middle section 350 of each cable slides within its own channel 180 and contacts the basket 110. This contact provides a force on the car 110 that directs the car upward as shown by arrow 392 in FIG. When the proximal slider 280 contacts the bumper 312, the motor 234 stops and the spindle 260 stops rotating. It is possible to use other methods with the lumbar support system 100 that are well known to those skilled in the art in a manner that cuts off the energy supply of the motor 234 at certain travel points.

  [0058] The hinge 374 anchored to the hook wire 390 to the attachment wire 390 facilitates movement of the cage 110 by flexing to provide smooth movement over the entire travel range. As shown in FIG. 5, pivot points 380, 384, 388 allow folding of hinge 374 about motor 234 when fully extended. The attachment wires 390, each affixed to the respective vertical supports 30, 34 of the frame 26, rotate as the lumbar support system 100 moves as needed.

  [0059] If the occupant wishes to retract the basket 110 to reduce lumbar support, counterclockwise rotation of the spindle 260 causes the proximal slider 280 to travel proximally along the spindle 260 and the distal slider. 284 is moved distally, i.e., the sliders 280 and 284 are moved apart from their attached cables 320 and 324 together. As the slider 280 and slider 284 are further separated, the pressure on the car 110 from the cable middle section 350 decreases and the car 110 responds and retracts backward as indicated by arrow 394 in FIG. As described above, when the slider 280 contacts the bumper 308, the motor 234 stops.

  [0060] During the travel of the cage 110, the cables 320, 324 remain in substantially the same plane until they extend from the retract and return, and the first end 330 and the second end of each cable 320, 324 The angle α between 334 (see FIG. 4) remains obtuse.

  [0061] FIG. 6 depicts an alternative form of the lumbar support system 400 for the seat 410, the overall features of which have been described previously. The seat 410 includes a frame 426 having a seat bottom 414 (shown in phantom), a folding seat back 418, and vertical support members 434, 438. A lumbar support element in the form of a contour mat or flex mat 440 includes a lateral outer wire 444, a central wire 448, and a plurality of transverse wires 452 extending between the lateral outer wires 444. . The frame 426 further includes a pair of receiving ports 456 for receiving a support portion of a headrest (not shown). As depicted, the lumbar support system 400 includes a pair of independently adjustable lumbar support mechanisms 500, 502.

  [0062] FIG. 7 depicts a lumbar support system 400, with FIG. 8 detailing the components of the proximal adjustable lumbar support mechanism 500 with reference to the proximal end 520 and the distal end 524.

  [0063] The drive mechanism assembly or actuator 530 is substantially as shown in FIG. 3A, and interacts with the motor shaft 534, pinion 538 motor shaft as previously described with respect to the system of FIG. , Housing 542, worm gear 546, cap 550, and drive shaft 554. A threaded member or spindle 560 is connected to the drive shaft 554 and extends a substantial portion of the spindle rail 562. Spindle 560 has a right hand proximal thread and a left hand distal thread. The proximal threaded end 564 is secured to the end of the drive shaft 554 and is received in an opening 572 defined by the end so that it rotates with the drive shaft 554 as the motor 534 operates. To do. A slider or proximal slider 580 and a distal slider 584 are disposed about each threaded end 564 568 of the spindle 560, and each slider 580, 584 is for engagement with the spindle 560. Having an internally threaded body. Opposite grooves 590, 592, 594, 596 mesh with opposite edges 600, 604 formed as part of the spindle rail 562, to provide opposite translational movement of the active sliders 580, 584. Cause it to occur. A bumper 608 positioned adjacent to the drive shaft 554 provides a first travel limit for the proximal slider 580, and a second bumper 612 adjacent to the centrally located stopper 616 is the second travel. Limits are provided, and these limits define the range of motion of the proximal slider 580.

  [0064] Proximal cable 620 and distal cable 624 are coupled to proximal slider 580 and distal slider 584, respectively. Each cable 620, 624 includes a first end 630, a second end 634, and a cable body 638. The first end 630 of each cable 620, 624 includes a connector 644 that couples to the body of the slider for integral movement with the respective slider 580, 584. The cable body of each cable 620, 624 extends from the first end 630 and defines an intermediate section 650. The middle section 650 of the distal cable 624 of the proximal lumbar support mechanism 500 is longer than the middle section 650 of the proximal cable 620 of the same lumbar support mechanism, as depicted in FIG. This long intermediate section 650 of cable 624 is housed in a rigid sleeve 652 having an inner diameter that is wider than the diameter of cable 624 to allow internal free movement of cable 624. The portions of the intermediate section 650 of the proximal and distal cables 620, 624 each pass through the clip 660 and are received by the clip 660, which clip 660, and the proximal and distal cables 620, 624, and so on. Thus, the lumbar support mechanism 500 is connected to the flex mat 440 through the outer wire 444. Each intermediate section 650 terminates at a second end 634 that is connected to a hook fitting 668, which is secured to a respective vertical support member 434 436 of the frame 426. Referring to FIG. 7, distal lumbar support mechanism 502 is a mirror image of proximal lumbar support mechanism 500.

  [0065] The seat occupant may optionally choose to activate the proximal lumbar support mechanism 500 or the distal lumbar support mechanism 502 in the same manner. Alternatively, the seat occupant may be able to activate both the proximal mechanism 500 and the distal mechanism 520 with the same switch. The following description of operation focuses on the support mechanism 500, but applies equally to the support mechanism 502.

  [0066] The seat occupant activates the actuator 530 for the proximal lumbar support mechanism 500 using an electrically operated switch that is preferably located adjacent to the seat back 418 or the seat bottom 414. Let Referring to FIGS. 9 and 10, when the actuator 530 is activated, the mechanism 500 can be placed in any position between the fully retracted position (FIG. 9) and the fully extended position (FIG. 10). When the motor 534 is energized, the engagement of the worm gear 546 rotates the drive shaft 554 and simultaneously rotates the spindle 560. If the lumbar support mechanism 500 is activated to retract, ie provide less support, the spindle 560 rotates in the first direction. If the lumbar support mechanism 500 is activated to extend, i.e., provide more support, the spindle 560 rotates in the opposite direction. The user can select which direction to start with an electric operation switch. As in the embodiment of FIG. 1, rotation of the spindle 560 translates the sliders 580, 584 and their grooves 590, 592, 594, 596 interact with the edges 600, 604 of the spindle rail 562, resulting in one slider. 580, 584 travels in the proximal direction (520) and the other slider 580, 584 travels in the distal direction (524).

  [0067] To extend the lumbar support mechanism 500, the seat occupant activates the mechanism to rotate the spindle 560 clockwise (as viewed from the distal direction 524), causing the proximal slider 580 to move to the spindle 560. And the distal slider 584 is moved proximally, i.e., the slider 580 and the slider 584 are brought closer together with their attached cables 620, 624. As slider 580 and slider 584 converge, intermediate section 650 contacts side outer wire 444 and pushes the area of flex mat 440 covered by mechanism 500 forward as indicated by arrow 692 in FIG. . When the proximal slider 580 contacts the bumper 612, the motor 534 stops and the spindle 560 stops rotating. As shown in FIGS. 9 and 10, the hook end 668 is provided around the vertical support members 434, 438 to allow smooth movement of the lumbar support mechanism 500 as it advances forward. Allow coupled rotation. Although not shown, a spring coupled in series with one or both of the cables 620, 624 allows a limited amount of deflection and provides "flexibility" to the occupant to enhance the comfort of the device. Can be provided.

  [0068] To retract the lumbar support mechanism 500 to reduce lumbar support, the seat occupant activates the mechanism 500 to rotate the spindle 560 counterclockwise and causes the proximal slider 580 to move in the proximal direction. The distal slider 584 is moved in the distal direction, that is, the slider 580 and the slider 584 are separated from each other with the cables 620 and 624 attached thereto. As the slider 580 and slider 584 are further separated, the pressure on the lateral outer wire 444 from the intermediate section 650 of the cables 620, 624 is reduced and the flex mat 440 is correspondingly indicated by arrow 694 in FIG. Retract backwards as if As previously described, the motor 534 stops when the proximal slider 580 contacts the bumper 608.

[0069] The lumbar support mechanisms 500, 502 are independent and both can be operated over their full range of motion. For example, both lumbar support mechanisms 500, 502 can be both extended, both retracted, or one fully or partially retracted and the other fully or partially extended. . Referring to FIG. 11, the proximal lumbar support mechanism 500 is in a fully extended position, while the distal lumbar support mechanism 502 is in a fully retracted position (the mechanism 502 lacks a motor for clarity). ). As shown in FIG. 12, the proximal lumbar support mechanism 500 is in a fully retracted position, while the distal lumbar support mechanism 502 is in a fully extended position. Any independent degree of stretch / retraction of the mechanisms 500, 502 can be implemented between the ranges depicted in FIGS. The vertical distance D ₁ separating mechanism 500 and mechanism 502 is approximately 50 mm, but can be larger or smaller for a particular application.

  [0070] As with the lumbar support system 100, during the course of the contour mat 440, the cables 620, 624 remain in substantially the same plane until they are retracted and retracted, and each cable 620, 624 is located. The angle β (see FIG. 9) between the first end 630 and the second end 634 remains obtuse.

[0071] As shown in FIG. 13, in some applications, a single lumbar support mechanism, such as mechanism 500, is used alone with the operation of the mechanism substantially as previously described. Sometimes.
[0072] FIG. 14 shows an alternative form of a lumbar support system 700 for a seat, the overall features of which have been described previously. The seat includes a frame 726 having vertical support members 734, 738. A lumbar support element in the form of a contour mat or flex mat 740 includes a lateral outer wire 744, a central wire 748, and a plurality of transverse wires 752 extending between the lateral outer wires 744. The lumbar support system 700 includes an independently adjustable lumbar support mechanism 800.

  [0073] FIG. 15 depicts a lumbar support system 700, with FIG. 16 detailing the adjustable lumbar support mechanism 800 components with reference to the proximal end 820 and the distal end 824.

  [0074] The drive mechanism assembly or actuator 830 is substantially as shown in FIG. 3A, and interacts with the motor 834, motor shaft with pinion 838 as previously described with respect to the system of FIG. , Housing 842, worm gear 846, cap 850, and drive shaft 854. A threaded member or spindle 860 is connected to the drive shaft 854 and extends over a substantial portion of the spindle rail 862. Spindle 860 has a right hand proximal thread and a left hand distal thread. The proximal threaded end 864 is secured to the end of the drive shaft 854 and is received in an opening 872 defined by the end so that the motor 834 operates and rotates together with the drive shaft 854. To do. A slider or proximal slider 880 and a distal slider 884 are disposed around each threaded end 864, 868 of the spindle 860, and each slider 580, 584 is for engagement with the spindle 860. Having an internally threaded body. Opposite grooves 890, 892, 894, 896 mesh with opposite edges 900, 904 formed as part of the spindle rail 862, to provide opposite translational movement of the active sliders 880, 884. Cause it to occur. A bumper 908 placed adjacent to the drive shaft 854 provides a first travel limit for the proximal slider 880, and a bumper 912 adjacent to the centrally located stopper 916 provides a second travel limit. Provided, and these limits define the range of motion of the proximal slider 880.

  [0075] A first cable 920 is coupled to the proximal slider 880 and a second cable 924 is coupled to the distal slider 884. Each cable 920, 924 includes a first end 930, a second end 934, and a cable body 938. Connectors 944 securely connect the bodies of the respective sliders 880, 884 to their respective cable bodies 938 so that there is no relative movement between the connectors 944 and their attached cables 938 ( See also FIG. 14). The cable body 938 of each cable 920, 924 extends from the first end 930 to the second end 934 and terminates on one side of the respective connector 944 and the other side of the respective connector 944. Are divided into second intermediate sections 591 (see FIG. 14). A portion of each cable body 938 is operably contained within first and second sleeves 952, 954 having an inner diameter that is wider than the diameter of cable body 938 to allow internal free movement of each cable. Yes. The portion of each cable 920, 924 near each end 930, 934 of the cable body 938 passes through the clip 960 and is accommodated by the clip 960, which clip 960 connects the first and second cables 920, 924, and so on. Thus, the lumbar support mechanism 800 is connected to the flex mat 740 through the outer wire 744. As depicted, the joint 962 of the clip 960 is positioned such that the wire enters the clip 960 in a direction substantially parallel to the spindle 860, but one or more of the clips 960. The clip joint 962 may instead be angled toward the spindle 860 to allow a more direct path for the cables 920, 924. The first and second terminal ends 930, 934 are each connected to a hook fitting 968, and the hook fitting 968 itself is secured to the respective vertical support members 734, 738 of the frame 726.

  [0076] Referring to FIGS. 14 and 16, each of the sleeves 952 includes an outer end 970 and an inner end 974. Each of the sleeves 954 includes an outer end 978 and an inner end 982. The outer end 970, 978 of each sleeve is connected to its own clip 960. The inner ends 974 of the sleeves 952 are each fitted into and secured to a recess 984 in the side fitting 986. The inner ends 982 of the sleeves 954 are each fitted into and secured to a recess 988 in the central bracket 990. Each bracket 986, 990 includes upper and lower channels 992 that fit over the top and bottom rims 994 of the rail 862.

  [0077] The seat occupant activates the actuator 830 for the lumbar support mechanism 800 using an electrically operated switch that is preferably located adjacent to the seat back or seat bottom. With reference to FIGS. 17-21, the mechanism 800 is located in a first position (FIGS. 18-19) that provides more support in the upper waist region than in the lower waist region when the actuator 830 is actuated. Or can be placed in a second position (FIGS. 20-21) that provides more support in the lower waist region than in the upper waist region.

  [0078] As the motor 834 is energized, the engagement of the worm gear 846 rotates the drive shaft 854 (see FIG. 3A) and simultaneously rotates the spindle 860. If the lumbar support mechanism 800 is activated to the first position, the spindle 860 rotates in the first direction. If the lumbar support mechanism 800 is activated to the second position, the spindle 860 rotates in the opposite direction. The user can select which direction to start with an electric operation switch. As in the previous embodiment, rotation of the spindle 860 translates the sliders 880, 884, and their grooves 890, 892, 894, 896 interact with the edges 900, 904 of the spindle rail 862, resulting in one slider 880. , 884 travel in the proximal direction (820) and the other slider 880, 884 travels in the distal direction (824).

  [0079] Referring to FIG. 17, the lumbar mechanism 800 is shown in an intermediate position between the first position and the second position. To move the lumbar support mechanism 800 to the first position of FIGS. 18 and 19, the seat occupant activates the mechanism to rotate the spindle 860 clockwise (as viewed from the distal direction 824) and proximally. Slider 880 is moved distally along spindle 860 and distal slider 884 is moved proximally, ie, slider 880 and slider 884 are moved closer together. As the slider 880 and slider 884 converge together with their respective connectors 944, the second intermediate section 951 of the cables 920, 924 attaches to each clip 960 in a manner similar to that described with reference to FIG. The portion of the flex mat 740 stretched around the lateral outer wire 744 and spanned by the upper waist region mechanism 800 is pushed forward as shown in FIG. Concurrently, the first middle section 950 of the cables 920, 924 will loosen, resulting in the seat occupant experiencing greater support in the upper waist region than in the lower waist region. When the proximal slider 880 contacts the bumper 912, the motor 834 stops and the spindle 860 stops rotating.

  [0080] To move the lumbar support mechanism 800 to the second position of FIGS. 20 and 21, the occupant activates the mechanism to rotate the spindle 860 counterclockwise (as viewed from the distal direction 824). Thus, the proximal slider 880 is moved in the proximal direction along the spindle 860 and the distal slider 884 is moved in the distal direction, that is, the slider 880 and the slider 884 are separated. As the slider 880 and slider 884 diverge with each connector 944, the first intermediate section 950 of the cables 920, 924 is applied to each clip 960 in a manner similar to that described with reference to FIG. The portion of the flex mat 740 stretched around the lateral outer wire 744 and spanned by the lower lumbar region mechanism 800 is pushed forward as shown in FIG. Concurrently, the second middle section 951 of the cables 920, 924 is loosened, resulting in the seat occupant experiencing greater support in the lower waist region than in the upper waist region. When the proximal slider 880 contacts the bumper 908, the motor 834 stops.

[0081] vertical distance D ₂ which is remote upper waist region from the lower lumbar region as depicted in FIGS. 19 and 21 is a roughly 70 mm, larger or smaller for a particular application It can be a scale. In some constructions, the lumbar support mechanism 800 is configured to provide support only at the range limits depicted in FIGS. In other constructions, the mechanism 800 can operate and provide support in any position within the range depicted in FIGS.

  [0082] FIG. 22 depicts another lumbar support system 1000 for a vehicle seat, the overall features of which have been previously described. The system 1000 includes a separate frame portion 1010 having vertical support members 1020, 1024 for attaching flexible waist support elements that can be integrated with a seat and in the form of a basket 1040. Yes. The basket 1040 includes an elastic connector 1044 near the top edge 1048 to facilitate the travel of a portion of the basket 1040 along the vertical support members 1020, 1024. As depicted, the lumbar support system 1000 includes an adjustable lumbar support mechanism 1100.

  [0083] Still referring to FIG. 23, a drive mechanism assembly or actuator 1130 similar to that shown in FIG. 3A is provided on the motor 1134, housing 1142, bracket 1144, and motor drive shaft (not shown). It includes a threaded member or a worm gear arrangement (not shown) operable to rotate a threaded member or spindle 1150 that is orthogonal or oriented generally perpendicular to the seat. Around the threaded portion of the spindle 1150, a traveling member or slider 1160 having an internally threaded body for engagement with the spindle 1150 is disposed.

  [0084] A rail portion having a rigid support wire 1170 having a pair of hooks 1174, 1176 for engagement with the lower base member 1052 of the cage 1040 and first and second connected parallel rails 1180, 1184. And. Support wire 1170 further forms a loop 1190 between rail 1184 and hook 1176. An end piece 1200 with a semicircular groove 1204 sized to fit the rails 1180, 1184 includes a guide portion 1210 extending rearward from the first surface 1214. Guide portion 1210 is further seated on upper end 1220 of spindle 1150. Support wire 1170 is operatively coupled to drive mechanism assembly 1130 via bracket 1144. Channels 1230 on opposite sides of slider 1160 mesh with rails 1180, 1184 of support wire 1170 to allow translational movement of slider 1160 during operation. A first bumper 1234 adjacent to the bracket 1144 provides a first travel limit for the slider 1160, and a second bumper 1238 adjacent to the guide portion 1210 provides a second travel limit, which limits the slider 1160. A range of motion is defined.

  [0085] The cable 1250 includes a first end 1254, a second end 1258, and a cable body 1260. The first end 1254 is integrally formed with or secured to the connector 1264 that is coupled to the body of the slider 1160 for integral movement therewith. The cable body 1260 passes from the first end 1254 through the guide portion 1210 to the top edge 1048 of the cage 1040 and is defined by a passage 1270 defined by a brace member 1274 located approximately centrally laterally near the edge 1048 of the cage 1040. Extending through. Since the passage 1270 is formed with an arcuate cable contact portion 1278, the cable 1250 turns approximately 180 ° and travels downward toward the lower base member 1052, ie, the first end 1254 and the second end 1258. The angle between the two points is approximately 0 °, but the range may be approximately 0 ° to approximately 15 °. The second end 1258 of the cable 1250 is fixedly connected to the eyelet 1282, which receives through the first end 1286 of the spring 1290, and the second end 1294 of the spring couples the spring 1290 to the loop 1190.

  [0086] The seat occupant uses the electronically operated switch, which is preferably located adjacent to the seat back or bottom of the seat, as previously discussed for other embodiments. The actuator 1130 for the support mechanism 1100 is activated. With reference to FIGS. 22 and 24 (and also FIGS. 25 and 26), the mechanism 1100 can be any of a fully retracted (FIG. 22) and fully extended (FIG. 24) when the actuator 1130 is activated. Can be put into position. When the motor 1134 is energized, the engagement of the worm gear rotates the drive shaft and simultaneously rotates the spindle 1150. If the lumbar support mechanism 1100 is activated to retract, or provide less support, the spindle 1150 rotates in the first direction. If the lumbar support mechanism 1100 is activated to stretch, i.e., provide more support, the spindle 1150 rotates in the opposite second direction. The user can select which direction to start with an electric operation switch. The rotation of the spindle 1150 translates the sliders 1160 and their channels 1204 translate along the rails 1180, 1184.

  [0087] To extend the lumbar support mechanism 1100, the seat occupant activates the mechanism to rotate the spindle 1150 in the second direction and directs the slider 1160 to move downward toward the base member 1052. As the slider 1160 moves, the cable body 1260 contacts the arcuate portion 1278 of the brace 1274. The tension between the first end 1254 and the second end 1258 of the cable 1250 acts through the cable body 1260 and provides a downward force on the brace 1274. Because the brace 1274 is fixedly fixed to the cage 1040, specifically near the top edge 1048, while the cable 1250 is simultaneously fixed to the base member 1052 indirectly through the support wire 1170, The top edge 1048 of the basket 1040 slides down the vertical support members 1020, 1024 of the frame portion 1010 as prompted by the elastic connector 1044 to support the seat occupant's waist region as shown in FIG. As such, the waist contact area of the cage 1040 is extended forward. When the slider 1160 contacts the bumper 1234, the motor 1134 stops and the spindle 1150 stops rotating.

  [0088] To retract the lumbar support mechanism 1100 to reduce the lumbar support, the seat occupant activates the mechanism 1100 to rotate the spindle 1150 in the first direction and the slider 1160 upwards to the top edge. Turn to move towards 1048. As the slider 1160 travels in that manner, the pressure on the arcuate portion 1278 from the cable body 1260 is reduced, as further depicted in FIGS. 25 and 26, and the car 1040 is correspondingly moved backwards. Retract and flex the top edge 1048 upward along the vertical support members 1020, 1024. As described above, the motor 1134 stops when the slider 1160 contacts the bumper 1238.

  [0089] In some applications, the brace 1274 is a transverse piece (not shown) that spans at least a portion of the top edge 1048, and preferably presents a connection surface for the second end 1294 of the spring 1290. It is replaced by a horizontal piece in the form of a rigid wire. Using a shorter cable 1250 than that shown and described in FIGS. 22-26, when the motor 1134 operates to rotate the spindle 1150 and translate the slider 1160, the shorter cable 1250 causes the cage 1040 to move the same way. Rather than acting on the brace 1274 through the cable body 1260 as previously described, the force is applied directly to the cross member through the spring 1290 (ie, the second end 1294) as described above. Then, it acts to add to the top edge 1048 of the cage 1040. In other words, the spring hook 1294 is attached to the cross member instead of the loop 1190 on the support wire 1170 side. Instead, in some applications, the second end 1258 of the cable applies a downward force directly to the top edge 1048 (without the spring 1290) in operation.

  [0090] FIG. 27 depicts another lumbar support system 1300 for a vehicle seat having features similar to the system 1000. For ease of understanding, the system 1300 is newly numbered. System 1300 includes a separate frame portion 1310 having vertical support members 1320, 1324 for attaching a flexible waist support cage 1340. The basket 1340 includes an elastic connector 1344 near the top edge 1348 and an elastic connector 1350, 1351 near the lower base member 1352 so as to facilitate the travel of the basket 1340 along the vertical support members 1320, 1324. It is out. As depicted, the lumbar support system 1300 includes an adjustable lumbar support mechanism 1400.

  [0091] Still referring to FIG. 28, a pair of drive mechanism assemblies or actuators 1430, 1432 similar to the actuator 1130 shown in FIGS. 22-23, respectively, include a motor 1434, a housing 1442, a bracket 1444, And a worm gear arrangement (not shown) operable to rotate a threaded member or spindle 1450, 1452 orthogonal to each motor drive shaft (not shown) or oriented generally perpendicular to the seat. ) Is included. A slider 1460 having an internally threaded body for engagement with the spindle 1450 is disposed around the threaded portion of the spindle 1450. A block 1462 having an internally threaded body for engagement with the spindle 1452 is disposed around the threaded portion of the spindle 1452.

  [0092] A rigid support wire 1470 includes a pair of hooks 1474, 1476 for engagement with the lower base member 1352, a first rail portion having first and second connected parallel rails 1480, 1484, and And a second rail portion having first and second connected parallel rails 1486, 1488. First and second end pieces 1500 with semicircular grooves 1504 sized to fit the rails 1180, 1184 and rails 1186, 1188, respectively, each include a guide portion 1510 extending rearward. The guide portion 1510 of each end piece 1500 is further seated on the upper end 1520, 1522 of the respective spindle 1450, 1452. Support wire 1470 is operatively coupled to drive mechanism assemblies 1430, 1432 via bracket 1444.

  [0093] Channels 1530 on opposite sides of slider 1460 engage with rails 1480, 1484 of support wire 1470 to cause translational movement of slider 1460 in operation. A first bumper 1534 adjacent to the bracket 1444 provides a first travel limit for the slider 1460, and a second bumper 1538 adjacent to the guide portion 1510 of the associated end piece 1500 provides a second travel limit. Provided, and the limits define the range of motion of the slider 1460.

  [0094] Channels 1540 on opposite sides of block 1462 mesh with rails 1486, 1488 of support wire 1470. Block 1462 includes a through opening 1542 that receives a transverse bar 1544 coupled to and extending between vertical support members 1320, 1324. The horizontal bar 1544 is fixed to the support members 1320 and 1324 with a band 1546. Accordingly, the block 1462 is also fixed with respect to the frame portion 1310. First bumper 1548 and second bumper 1549 determine travel limits associated with block 1462 as described in further detail.

  [0095] A cable 1550 includes a first end 1554, a second end 1558, and a cable body 1560. First end 1554 is integrally formed with or secured to connector 1564 that is coupled to the body of slider 1460 for integral movement therewith. The cable body 1560 extends from the first end 1554 through the guide portion 1510 of the associated end piece 1500 toward the top edge 1348 of the cage 1340. The cable body 1560 passes through a passageway 1570 defined by a brace member 1574 located approximately centrally in the lateral direction near the edge 1348 of the cage 1340. Since the channel 1570 is formed with an arcuate cable contact portion 1578, the cable 1550 turns approximately 180 ° and travels downwardly toward the lower foundation member 1352, ie, the first end 1554 and the second end 1558. The angle between the two points is approximately 0 °, but the range may be approximately 0 ° to approximately 15 °. The second end 1558 of the cable 1550 is fixedly connected to a hook 1582 that is received in contact with the spindle 1452 through the opening 1586 in the end piece 1500.

  [0096] The seat occupant uses the electronic control switch, which is preferably located adjacent to the seat back or bottom of the seat, as discussed above for other embodiments. Actuators 1430 and 1432 for the support mechanism 1400 are activated. Referring to FIGS. 27 and 29, the mechanism 1400 can be placed in any position between full retraction (FIG. 27) and full extension (FIG. 29) when the actuator 1430 is actuated. When the motor 1434 of the actuator 1430 is energized, the engagement of the worm gear rotates the drive shaft and simultaneously rotates the spindle 1450. If the lumbar support mechanism 1400 is activated to retract or provide less support, the spindle 1450 rotates in the first direction. If the lumbar support mechanism 1400 is actuated to stretch, i.e., provide more support, the spindle 1450 rotates in the opposite second direction. The user can select which direction to start with an electric operation switch. The rotation of the spindle 1450 translates the slider 1460 and their channels 1504 interact with the rails 1480, 1484.

  [0097] To extend the waist support mechanism 1400, the seat occupant activates the mechanism to rotate the spindle 1450 in the second direction and directs the slider 1460 to move downward toward the base member 1352. As the slider 1460 moves, the cable body 1460 contacts the arcuate portion 1578 of the brace 1574. The tension between the first end 1554 and the second end 1558 of the cable 1550 acts through the cable body 1560 and provides a downward force on the brace 1574. Because the brace 1574 is fixedly secured to the cage 1340, specifically near the top edge 1348, while the cable 1550 is simultaneously secured to the base member 1352 through the support wire 1470, The top edge 1348 of the basket 1340 slides down the vertical support members 1320 and 1324 of the frame portion 1310 as prompted by the elastic connector 1344 to support the seat occupant's waist region as shown in FIG. As such, the waist contact area of the basket 1340 is extended forward. When the slider 1460 contacts the bumper 1534, the motor 1434 of the actuator 1430 stops and the rotation of the spindle 1450 stops.

  [0098] To retract the lumbar support mechanism 1400 to reduce the amount of lumbar support, the seat occupant activates the mechanism 1400 to rotate the spindle 1450 in the first direction and causes the slider 1460 to face upward. Move to move toward 1348. As the slider 1460 travels in that manner, the pressure on the arcuate portion 1578 from the cable body 1560 decreases, and the cage 1340 responds and retracts backward, causing the top edge 1348 to move to the vertical support members 1320, 1324. Bend upward along. As described above, when the slider 1460 contacts the bumper 1538, the motor 1434 of the actuator 1430 stops.

  [0099] Referring to FIGS. 27 and 30, the support mechanism 1400 and the basket 1340 are vertically adjustable to allow the seat occupant the flexibility to position the basket 1340 as desired. The mechanism 1400 can be in any position between fully lowered (FIG. 27) and fully raised (FIG. 30) when the actuator 1432 is activated. When the motor 1434 of the actuator 1432 is energized, the engagement of the worm gear rotates the drive shaft and simultaneously rotates the spindle 1452. If the lumbar support system 1400 is activated to descend, the spindle 1452 rotates in the first direction. If the lumbar support system 1400 is activated to rise, the spindle 1452 rotates in the opposite second direction. The user can select which direction to start with an electric operation switch. The rotation of the spindle 1452 translates the mechanism 1400 and the basket 1340 relative to the fixed block 1462 so that its channel 1540 interacts with the rails 1486, 1488.

  [0100] To raise the waist support mechanism 1400 and the support 1340, the seat occupant activates the mechanism to rotate the spindle 1452 in the second direction. The interaction of the threaded portion of the spindle 1452 and the threaded portion of the block 1462 secured to the frame portion 1310 directs the entire mechanism 1400 and basket 1340 to translate upward relative to the block 1462. If the actuator 1430 is not further operated, the degree of expansion of the cage 1340 remains unchanged while the tension in the cable 1550 is maintained. Connectors 1344, 1350, 1351 operatively contact the vertical support members 1320, 1324 to allow and guide upward movement of the basket 1340 to position the waist contact area of the basket 1340 in the vertical direction as desired. When the bumper 1548 contacts the block 1462, the motor 1434 of the actuator 1432 stops and the rotation of the spindle 1452 stops. To lower the lumbar support mechanism 1400, the seat occupant activates the mechanism 1400 to rotate the spindle 1452 in the first direction and directs the mechanism 1400 and the basket 1340 to translate downward relative to the block 1462. As previously described, when bumper 1549 contacts block 1462, motor 1434 of actuator 1432 stops.

  [0101] Referring to FIGS. 30 and 31, the basket 1340 is fully loaded through activation of the actuator 1430 at any height within the vertical range determined by the bumpers 1548, 1549, as previously described. Can be retracted or extended. It is not essential that the actuators 1430, 1432 be actuated separately, so that vertical adjustment and retraction / extension can be accomplished simultaneously.

  [0102] FIGS. 32-34 depict lumbar support system 2100 with reference to proximal end 2120 and distal end 2124. FIG. The upper portion 2130 and the lower portion 2134 of the cage 2110 are formed to include a plurality of openings 2138 separated by stiffening ribs 2142 that are generally interconnected by a border 2146 on the rear surface 2150 of the cage 2110. Yes. A central portion 2154 between the upper portion 2130 and the lower portion 2134 of the cage 2110 includes a mounting surface 2158. Mounting surface 2158 supports intermediate guide 2162 and opposite cable channels 2180, the purpose of which is described below.

  [0103] The spindle rail 2192 includes a set of upper and lower tabs 2196 oriented substantially perpendicular to the mounting surface 2158, which includes a plurality of corresponding slots 2212. As shown in FIG. 34, the tabs 2196 and slots 2212 are so provided, so that when assembled, the tabs 2196 turn or bend upwards or downwards as they project out of the slots 2212 and turn the spindle. The rail 2192 is permanently fixed to the basket 2110. The lumbar support system 2100 does not use any other fasteners, brackets, or other hardware to secure the spindle rail 2129 to the cage 2110.

  [0104] The drive mechanism assembly or actuator 2230 includes a motor 2234, a housing 2242, and a cap 2250 that houses a worm gear and a drive shaft, all of which are similar to those of the actuator 230. A motor 2234 secured to the housing 2242 with fasteners 2256 includes a D.P. C. Although it is desirable to be a reversible motor, it can be any type of reversible motor suitable for the application, and the dimensions and power can be varied as required. A drive shaft (not shown) meshes with the worm gear 246 for co-rotation and power transmission during operation. The drive shaft ends at the receiving port 2258. Cap 2250 secures motor 2234 to spindle rail 2192.

  [0105] A threaded member or spindle 2260 is connected to the drive shaft and extends over a portion of the spindle rail 2192. Spindle 2260 has a proximal threaded end 2264 and a distal threaded end 2268. As depicted, the proximal thread is a right hand thread and the distal thread is a left hand thread, although alternate orientations may be interchanged in alternative embodiments. Proximal threaded end 2264 is received within opening 2272 of receptacle 2258 and secured thereto for rotation so that spindle 2260 rotates integrally with drive shaft 254 when motor 2234 is operated. For example, by crimping). Around each threaded end 2264, 2268 of the spindle 2260 is a travel member or slider, a proximal slider 2280 and a distal slider 2284. Each slider 2280, 2284 has an inner threaded body for engagement with the spindle 2260 and opposite edges 2300, 2304 formed as part of the spindle rail 2192, respectively. Grooves 2290, 2292, 2294, 2296. Opposite threaded spindle ends 2264, 2268 are integral with the groove / edge interface of the slider 2280, 2284 against the spindle rail 2192 and are opposite to each other along the spindle 2260 of the slider 2280, 2284 as the spindle rotates. Causes translational motion.

  [0106] A bumper 2308 positioned adjacent to the receptacle 2258 provides one running end limit for the proximal slider 2280. A spacer 2312 having a proximal end 2314 and a distal end 2316 is disposed around the spindle 2260 between the slider 2280 and the slider 2284. Specifically, bumper 2308 and spacer 2312 are both configured to slide or “float” over spindle 2260, including a generally smooth inner surface without internal threads, as described in more detail. That is, neither the bumper 2308 nor the spacer 2312 is threaded into the proximal or distal threaded portion of the spindle 2260. The length of the spacer 2312 may vary depending on the particular application and may be color-coded such that a particular length is a reference during system assembly. The spacer 2312 establishes a second travel limit for the sliders 2280, 2284 and defines a range of motion.

  [0107] Proximal flexible cable 2320 and distal flexible cable 2324 are coupled to proximal slider 2280 and distal slider 2284, respectively. Each cable 2320, 2324 includes a first end 2330, a second end 2334, and a cable body 2338. The first end 2330 has a connector 2344 that fits within the body of the slider for integral movement with the respective slider 2280, 2284. The cable body 2338 of each cable 2320, 2324 extends from the first end 2330 and defines an intermediate section 2350, a portion of which is substantially disposed within its own channel 2180. The middle section 2350 of the distal cable 2324 of the proximal lumbar support mechanism 2100 is longer than the middle section 2350 of the proximal cable 2320 of the same lumbar support mechanism. In some embodiments, this long intermediate section 2350 of cable 2324 is within a rigid sleeve (not shown) having an inner diameter that is wider than the diameter of cable 2324 to allow internal free movement of cable 2324. It is paid. The middle section 2350 of each cable 2320, 2324 terminates at a second end 2334 that is connected to a hook fitting 2356.

  [0108] Referring to FIG. 33, the hook fittings 2356 are each configured to pass through the mouth 2360 of the hinge 2374 and to the end 2370 of the hinge 2374. Hinge 2374 is a “living” hinge that joins both upper portion 2130 and lower portion 2134 of cage 2110 on the opposite side of end 2370. As depicted, the hinge 2374 includes a plurality of pivot points that are arranged to eliminate interference with the motor 2234 during the travel of the cage 2110. The hinge 2374 and the cage 2110 are preferably formed as a single piece. Alternatively, the hinge 2374 may be a separate piece secured to the basket 2110 in a manner known to those skilled in the art. Each end 2370 of the hinge 2374 includes a pair of flexible snap hooks 2380 that are configured to connect to portions of the respective vertical support members 34, 38 (see FIG. 1) of the frame 26. Although not shown, a spring connected in series with one or both of the cables 2320, 2324 allows a limited amount of deflection and provides "flexibility" to the occupant to enhance the comfort of the device. Can be provided.

  [0109] The above-described attachment of the spindle rail 2192 to the cage 2110 serves as the only way to fasten the components of the lumbar support system 2100 (minus the cage 2110) to the vehicle.

  [0110] In operation, the seat occupant activates the power actuator 2230 using an electrical operating switch. Actuation proceeds in a manner similar to that of the lumbar support system 100, i.e., occurs between a fully retracted position and a fully extended position. If the lumbar support system 2100 is activated to retract the cage 2110, the spindle 2260 rotates in the first direction. If the lumbar support system 2100 is activated to extend the cage 2110, the spindle 2260 rotates in the opposite second direction. The user can select which direction to start with an electric operation switch. Due to the interaction between the grooves 2290, 2292, 2294, 2296 of the sliders 2280, 2284 and the edges 2300, 2304 of the spindle rail 2192, rotation of the spindle 2260 translates the sliders 2280, 2284, causing one slider to move proximally ( 2120) and the other slider in the distal direction (2124).

  [0111] If the cage 2110 is desired to extend to provide more lumbar support to the occupant, clockwise rotation of the spindle 2260 (as viewed from the distal direction 2124) causes the proximal slider 2280 to move along the spindle 2260. Run in the distal direction and move the distal slider 2284 in the proximal direction, ie, move the sliders 2280 and 2284 closer together with their attached cables 2320 and 2324. As slider 2280 and slider 2284 converge, the middle section 2350 of each cable slides within its own channel 2180 and contacts the basket 2110. This contact provides a force that directs the cage upward relative to the cage 2110. During initial distal movement of the proximal slider 2280, the proximal slider 2280 contacts the proximal end 2314 of the spacer 2312 and simultaneously moves the spacer 2312 in the distal direction. When the distal end 2316 of the spacer 2312 contacts the distal slider 2284, the motor 2234 stops and the rotation of the spindle 260 stops. It is possible to use other methods with the lumbar support system 2100 that are well known to those skilled in the art in a manner that cuts off the energy supply of the motor 2234 at a particular travel point. The hinges 2374 fixed to the respective vertical support members flex to smooth the movement of the cage 2110 and provide a smooth movement over the entire travel range.

  [0112] If the occupant wants to retract the basket 2110 to reduce the lumbar support, the counterclockwise rotation of the spindle 2260 causes the proximal slider 2280 to travel along the spindle 2260 in the proximal direction and the distal slider 2284 is moved distally, that is, the sliders 2280 and 2284 are separated from each other with their attached cables 2320, 2324 together. As the slider 2280 and the slider 2284 are further separated, the pressure on the cage 2110 from the middle section 350 of the cable is reduced and the cage 2110 is correspondingly retracted backwards. As described above, the motor 2234 stops when the slider 2280 contacts the bumper 2308. The spacers 2312 that are free to float along the spindle 2260 generally remain in place midway between the sliders 2280 and 2284 during subsequent movement of the sliders 2280 and 2284.

  [0113] During the travel of the cage 2110, the cables 2320, 2324 remain in substantially the same plane until they extend from the retract and return, and the first end 2330 and second end of each cable 2320, 2324 The angle α (see FIG. 4) between 2334 remains obtuse.

  [0114] FIGS. 35-37 depict the modularity of the lumbar support system 2100. FIG. The cage 2110 is configured to support the spindle rail 2192 on the mounting surface 2158 in both the proximal and distal positions, and the actuator 2230 can be attached to the spindle rail 2192 in two possible orientations. . Thus, as shown, the system 2100 can be configured in four possible ways depending on the vehicle parameters or constraints for a particular application.

  [0115] FIGS. 38-39 depict another lumbar support system 2400 for use with a seat such as the seat 410 depicted in FIG. 6 having a contour mat or flex mat 440. FIG. . The lumbar support system 2400 is similar to the lumbar support system 2100 with certain differences described below.

  [0116] The drive mechanism assembly or actuator 2430 is substantially similar to the actuator 2330 and need not be described in further detail. The threaded member or spindle 2460 connected to the drive shaft of the actuator 2430 spans a substantial portion of the spindle rail 2462. The spindle rail 2462, best shown in FIG. 39, includes a mounting bracket or portion 2466 having first and second slots 2470 near the actuator 2430. One or both inner peripheries 2472 of the slot 2470 are lined with a plurality of continuous or discontinuous barbs, ridges, or similar protrusions. In one embodiment, the outer wire 444 of the flex mat 440 includes a thin coating having a thickness of about 0.4 mm of nylon or nylon equivalent material. During assembly, particularly during connection of the attachment portion 2466 to the associated outer wire 444, the attachment portion 2466 is positioned to place the slot 2470 in contact with the wire 444, ie, on the inner perimeter 2472. The reverse spine is “snipped” into the cover, so that it can be snapped into place. This connection between the mounting portion 2466 and the outer wire 444 allows rotation of the spindle rail 2462 about the outer wire 444 but prevents movement of the spindle rail 2462 along the outer wire 444. Moreover, to adjust the position of the support system 2400 with respect to the flex mat 440 and seat 410, the attachment portion 2466 is removed from the outer wire 444 and moved to another position along the length of the outer wire 444 and then reconnected. Can be done without the use of additional tools or machine tool equipment.

  [0117] Spindle 2460 has a right hand proximal thread and a left hand distal thread and corresponding proximal slider 2480 and distal slider 2484. A bumper 2508 positioned adjacent to the drive shaft of the actuator 2430 provides a first travel limit for the proximal slider 2480. A spacer 2512 having a proximal end 2514 and a distal end 2516 is disposed around the spindle 2460 between the slider 2480 and the slider 2484. The spacer 2512 is identical to the spacer 2312 and is configured to “float” over the spindle 2460 and further establishes a second travel limit for the sliders 2480, 2484 and defines a range of motion.

  [0118] Proximal cable 2620 and distal cable 2624 are coupled to proximal slider 4280 and distal slider 2584, respectively. Each cable 2620, 2624 includes a cable body 2638 and is coupled to a respective slider 2480, 2484. The middle section 2650 of the distal cable 2624 is longer than the corresponding middle section 2650 of the proximal cable 2620. As depicted, a portion of this longer intermediate section of cable 2624 is contained within a rigid sleeve 2652 having an inner diameter that is wider than the diameter of cable 2624 to allow internal free movement of cable 2624. Yes. The portions of the proximal cable 2620 and the distal cable 2624 each pass through the clip 2660 and are received by the clip 2660, and the clip 2660 passes the proximal and distal cables 2620, 2624 to the flex mat 440 and the outer wire 444. Are linked through. The cables 2620 and 2624 each terminate in a hook metal fitting 2668, and the hook metal fitting 2668 itself is fixed to the respective vertical support members 434 and 436 (see FIG. 1) of the frame 426.

  [0119] The attachment of the spindle rail 2462 through the attachment portion 2466 and the clip 2660 to the flex mat 440 described above serves as the only way to fasten the above components of the lumbar support system 2400 to the vehicle. Fulfill.

  [0120] The seat occupant activates the actuator 2430 for the lumbar support system 2400 using an electrically operated switch that is preferably located adjacent to the seat back 418 or the seat bottom 414. System 2400 can enter any position between fully retracted and fully extended positions when actuator 2430 is activated. The energy supply of actuator 2430 translates sliders 2480 and 2482 by rotating spindle 2460 in the same manner that actuator 2230 rotates spindle 2260. As slider 2480 and slider 2484 converge, intermediate section 2650 contacts side outer wire 444 and pushes flex mat 440 forward. During initial distal movement of the proximal slider 2480, the proximal slider 2480 contacts the proximal end 2514 of the spacer 2512 and simultaneously moves the spacer 2512 in the distal direction. When the distal end 2516 of the spacer 2512 contacts the distal slider 2484, the actuator 2430 stops and the rotation of the spindle 2460 stops. The hook end 2668 allows for coupled rotation about the vertical support members 434, 438 to allow smooth movement of the lumbar support system 2400 as it travels forward.

  [0121] The spindle rail 2462 is not connected to the central wire 448 of the flex mat 440, but can rotate about the attached outer wire 444 so that the central wire 448 can "flex" more during operation. The user can hardly feel the presence of the spindle rail 2462.

  [0122] To retract the lumbar support system 2400 to reduce lumbar support, the seat occupant activates the actuator 2430 to rotate the spindle 2460 counterclockwise and causes the proximal slider 2480 to move proximally. And the distal slider 2482 is moved in the distal direction. As the slider 2480 and the slider 2484 are further separated, the cable 2620, 2624 is less pressed against the lateral outer wire 444 from the intermediate section 2650, and the flex mat 440 is retracted rearward. As previously described, the motor 534 stops when the proximal slider 2480 contacts the bumper 2508.

  [0123] As with the lumbar support system 2100, during the course of the contour mat 440, the cables 2620, 2624 remain in substantially the same plane until they extend from the retract and return, each cable 2620, 2624. The angle β between the first end and the second end (see, for example, FIG. 9) remains obtuse.

  [0124] FIGS. 40-42 depict the modularity of the lumbar support system 2400. FIG. The flex mat 440 is configured to support the spindle rail 2462 with either outer wire 444 and the actuator 2430 can be attached to the spindle rail 2462 in two possible orientations. Thus, as shown, the system 2400 can be configured in four possible ways depending on the vehicle parameters or constraints for a particular application.

  [0125] The lumbar support system components of FIGS. 1, 6, 13, 14, 22, 27, 32, and 38 are constructed from metal or plastic or a combination of the two. For example, the spindles 260, 560, 860, 1150, 1450, 1452, 2260, 2460 and the spindle rails 192, 562, 862, 2192, 2462 are formed from a metal such as aluminum, and the remaining components are made of plastic. Can be formed.

  [0126] Various features and advantages of the invention are set forth in the appended claims.

10, 410 Seat 14, 414 Seat bottom 18, 418 Seat back 22 Axis 26, 426, 726 Frame 30 Cushion 34, 38, 434, 438, 734, 738 Vertical support member 100, 400, 700 Lumbar support system 110 1040 Basket 114 Front surface 120 Proximal end 124 Distal end 130 Upper portion 134 Lower portion 138 Opening 142 Stiffening rib 146 Edge material 150 Rear surface 154 Central portion 158 Mounting surface 162 Guide 166 Upper rail 170 Lower rail 180 Cable channel 184 Mounting pin 188 Mounting hole 192, 562, 862 Spindle rail 196 Upper tab 200 Port 204 Hook 208 Projection 212 Slot 216 Block 230, 530, 830 Drive mechanism assembly or actuator Eta 234, 534, 834 Motor 238, 538, 838 Pinion 242, 542, 842, 1142 Housing 246, 546, 846 Worm gear 250, 550, 850 Cap 254, 554, 854 Drive shaft 256 Fastener 260, 560, 860 Threaded member or spindle 264, 564, 864 Proximal threaded end 268, 568, 868 Distal threaded end 272, 572, 872 Opening 280, 580, 880 Proximal slider 284 , 584, 884 Distal slider 290, 292, 294, 296, 590, 592, 594, 596, 890, 892, 894, 896 Groove 300, 304, 600, 604, 900, 904 Edge 308, 312, 608, 612 , 908, 9 12 Bumper 316, 616, 916 Stopper 320, 620 Proximal cable 324, 624 Distal cable 330, 630 First end 334, 634 Second end 338, 638, 938 Cable body 344, 644, 944 Connector 350, 650 Intermediate section 354 Coil end fitting 356, 668, 968 Hook fitting 358 First end of spring 362 Spring 366 Second end of spring 370 Hook end 374 Hinge 380, 384, 388 Pivot point 390 Attachment wire 440, 740 Contour mat or flex mat 444 , 744 Lateral outer wire 448, 748 Central wire 452, 752 Transverse wire 456 Receptacle 500, 502, 800 Lumbar support mechanism 520, 820 Proximal end 524, 824 Distal end 652, 952, 954 Sleeve 66 , 960 clip 920 first cable 924 second cable 930 first end 934 second end 950 first intermediate section 951 second intermediate section 962 joint 970, 978 outer end of sleeve 974, 982 inner end of sleeve 984 recessed 986 side Bracket 988 Depressed 990 Center bracket 992 Channel 994 Rim 1000, 1300 Lumbar support system 1010, 1310 Frame portion 1020, 1024, 1320, 1324 Vertical support member 1040, 1340 Basket 1044, 1344, 1350, 1351 Connector 1048, 1348 Top edge 1052, 1352 Lower base member 1100, 1400 Lumbar support mechanism 1130, 1430, 1432 Drive mechanism assembly or actuator 1134, 1434 Motor 1142, 1 42 Housing 1144, 1444 Bracket 1150, 1450, 1452 Threaded member or spindle 1160, 1460 Slider 1170, 1470 Support wire 1174, 1176, 1474, 1476 Hook 1180, 1184, 1480, 1484, 1486, 1488 Parallel rail 1190 Loop 1200, 1500 End piece 1204, 1504 Semicircular groove 1210, 1510 Guide part 1214 First surface 1220, 1520, 1522 Upper end 1230, 1530 Channels 1234, 1238, 1534, 1538, 1548, 1549 Bumper 1250, 1550 Cable 1254 , 1554 First end 1258, 1558 Second end 1260, 1560 Cable body 1264, 1564 Connector 1270, 1 70 Passage 1274, 1574 Brace member 1278, 1578 Arcuate cable contact portion 1282 Eyelet 1286 First end of spring 1290 Spring 1294 Second end of spring 1462 Block 1540 Channel 1542 Open 1544 Horizontal bar 1546 Band 1582 Hook 1586 Open end piece 2100 2400 Lumbar support system 2110 Basket 2120 Proximal direction 2124 Distal direction 2130 Upper part 2134 Lower part 2138 Opening 2142 Stiffening rib 2146 Edge material 2150 Rear surface 2154 Central part 2158 Mounting surface 2162 Intermediate guide 2180 Cable channel 2192, 2462 Spindle rail 2196 Tab 2212 Slot 2230, 2430 Drive mechanism assembly or actuator 2234 Motor 2242 c Zing 2250 Cap 2256 Fastener 2258 Receptor 2260, 2460 Spindle 2264 Proximal Threaded End 2268 Distal Threaded End 2272 Opening 2280, 2480 Proximal Slider 2284, 2484 Distal Slider 2290, 2292, 2294, 2296 Groove 2300, 2304 Edge 2308, 2508 Bumper 2312, 2512 Spacer 2314, 2514 Spacer proximal end 2316, 2516 Spacer distal end 2320, 2620 Proximal cable 2324, 2624 Distal cable 2330 First end 2334 Second end 2338, 2638 Cable body 2344 Connector 2350, 2650 Intermediate section 2356, 2668 Hook fitting 2360 Port 2370 End of hinge 2374 Hinge 2380 Nap hook 2466 mounting bracket or mounting portion 2470 slot 2472 inside periphery of the slot 2652 sleeve 2660 clip alpha, beta cable end between the angle D ₁ mechanism between the vertical separation distance D ₂ waist region between the vertical distance

Claims (20)

A lumbar support system for a seat back,
A fixed frame;
A waist support movable from a first position to a second position connected to the fixed frame;
A motor coupled to the lumbar support;
A threaded member operatively engaged with the motor, so that the motor rotates the threaded member about an axis; and
A first travel member engaged with the threaded member; and
A second travel member engaged with the threaded member, wherein rotation of the threaded member causes the first travel member and the second travel member to be threaded; A first traveling member and a second traveling member that translate in opposite axial directions along
A spacer disposed between the first traveling member and the second traveling member, the spacer configured to slide over the threaded member;
A first end connected to the first travel member for integral movement therewith; a second end connected to the fixed frame; and an intermediate portion operatively associated with the waist support. A first flexible cable comprising:
A first end coupled to the second travel member for integral movement therewith; a second end coupled to the fixed frame; and an intermediate portion operatively associated with the waist support. , Wherein the intermediate portion of the first flexible cable and the intermediate portion of the second flexible cable are the first traveling member and the second flexible cable. A first flexible cable and a second flexible cable operative to move the waist support from the first position to the second position in response to translation of the travel member;
Lumbar support system equipped with.   The lumbar support system according to claim 1, wherein the lumbar support is a contour mat.   The lumbar support system according to claim 1, wherein the fixed frame includes a vertical member, and the lumbar support is a cage disposed between the vertical support members.   The lumbar support according to claim 1, further comprising a spring disposed between the second end of one of the first flexible cable and the second flexible cable and the fixed frame. system.   The lumbar support system according to claim 1, further comprising a hinge disposed between the lumbar support and the fixed frame and connected to the lumbar support and the fixed frame.   The lumbar support system according to claim 5, wherein the hinge pivots in response to movement of the lumbar support from the first position to the second position.   The lumbar support system according to claim 5, further comprising a joint disposed between the hinge and the fixed frame.   The first flexible cable and the second flexible cable are disposed in substantially the same plane during movement of the waist support from the first position to the second position. The lumbar support system according to claim 1.   The lumbar support system according to claim 1, wherein a portion of one of the first flexible cable and the second flexible cable travels within a sleeve adjacent to the lumbar support.   The first flexible cable forms an angle between the first end and the second end that remains an obtuse angle during movement of the waist support from the first position to the second position; The lumbar support system according to claim 1. A support system for a seat back,
A fixed frame;
A support in the form of a contour mat adapted to be attached to the fixed frame, the contour mat comprising an outer wire and a plurality of transverse wires disposed laterally Body,
A first flexible cable operatively coupled to the frame and having a first end, a second end, and a cable body;
A second flexible cable operatively coupled to the frame and having a first end, a second end, and a cable body;
An actuator configured to move the first flexible cable and the second flexible cable relative to the support, and when the actuator operates, the support and the first flexible cable Contact between the cable body of at least one of the cable and the second flexible cable moves the support from a first position to a second position, and the actuator is disposed on the side of the support. An actuator connected only to the outer wire being connected;
A support system comprising:   The actuator is rotatably connected to the one of the outer wires disposed on the sides, and the connection is along the one of the outer wires disposed on the sides of the actuator. 12. A support system according to claim 11 which prevents excessive movement.   12. The first flexible cable and the second flexible cable are disposed in substantially the same plane during movement of the support from the first position to the second position. A support system according to claim 1.   The lumbar support system of claim 11, wherein a portion of one of the first flexible cable and the second flexible cable travels in a sleeve adjacent to the support.   The first flexible cable forms an angle between the first end and the second end that remains an obtuse angle during movement of the support from the first position to the second position. Item 12. The support system according to Item 11.   12. The support system of claim 11, wherein the first position provides a first waist support and the second position provides a second waist support that is different from the first support. An adjustable support system for a seat with a fixed frame,
A support movable from a first position to a second position relative to the frame;
An actuator connected only to the support and configured to move the support between the first position and the second position;
A member operatively associated with and movable by the actuator, the member having a length;
A flexible cable having a first end and a second end, wherein the first end is connected to the member for travel along the length of the member, and the second end is the fixed A flexible cable coupled to a frame, so that movement of the member by the actuator directs the flexible cable to move the support between the first position and the second position; ,
Adjustable support system comprising.   The adjustable support system of claim 17, wherein movement of the member by the actuator causes the first end of the flexible cable to travel along the length of the member.   When the actuator operates, contact between the support and a portion of the flexible cable intermediate the first end and the second end moves the support from the first position to the second position. 18. The adjustable support system of claim 17, wherein the adjustable support system is moved.   The adjustable support system further comprises a travel member operatively associated with the member for movement along the length of the member as the actuator moves the member. The adjustable support system of claim 17, wherein the first end of a flexible cable is coupled to the travel member.

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