JP4785889B2 - Stabilizer support structure - Google Patents

Description

  The present invention relates to a support structure for a vehicle body of a stabilizer in which a pair of arms connected to both ends of a torsion bar that can be torsionally deformed is connected to a suspension, and the vicinity of both ends of the torsion bar is supported by a vehicle body via support means.

A structure for supporting the stabilizer on the vehicle body is known from the following patent document. This is made by welding a U-shaped lower bracket to the flat lower surface of the upper bracket fixed to the vehicle body, and allowing the stabilizer to rotate through the through hole of the rubber bush sandwiched between the upper bracket and the lower bracket. Yes.
JP 2000-108633 A

  By the way, the above conventional one allows torsional deformation of the torsion bar by allowing the torsion bar of the stabilizer to pass through the through hole of the rubber bush and sliding the inner peripheral surface of the through hole and the outer peripheral surface of the torsion bar. However, since the friction coefficient of the rubber bush is large, the smooth sliding of both of them is hindered, and the torsion bar cannot be smoothly twisted and deformed, resulting in a decrease in the riding comfort of the vehicle.

  The present invention has been made in view of the above circumstances, and an object thereof is to support a torsion bar of a stabilizer on a vehicle body so that it can be freely twisted and deformed.

In order to achieve the above object, according to the first aspect of the present invention, a torsion bar capable of twisting deformation and a pair of arms having one end connected to both ends of the torsion bar and the other end connected to the suspension side. with the door, in the support structure to the vehicle body of stabilizer before Kia over arm is supported on the vehicle body side via the support means, to the arm, the joint support hole having an axis coincident with the axis of the torsion bar provided, said supporting means, said joint support has a joint hole is mounted concentrically body of the stabilizer to the arm, characterized that you support swingably about the axis of the torsion bar A support structure is proposed.

According to the invention described in claim 2, in addition to the structure of claim 1, the joint of the support means is a rubber bush joint in which an inner cylinder and an outer cylinder are respectively fixed to an inner circumference and an outer circumference of an elastic body. The inner cylinder is attached to the vehicle body side, and the outer cylinder is inserted into the joint support hole so that the axes of the inner cylinder, the outer cylinder, and the elastic body are aligned with the axis of the torsion bar. A structure for supporting the stabilizer on the vehicle body is proposed.

  According to the invention described in claim 3, in addition to the structure of claim 1 or 2, the support means is provided on the one end side of the arm. A support structure is proposed.

According to the invention described in claim 4, in addition to the structure of any one of claims 1 to 3, the vicinity of both ends of the torsion bar is located in front of the support means in the vehicle front-rear direction. or, said arm extending rearwardly Ru been proposed support structure for a vehicle body of the stabilizer, characterized in that it has a curved portion that is curved to the opposite side.

  The rubber bush joint 54 of the embodiment corresponds to the joint of the present invention.

According to the configuration of the first aspect, when the ends of the torsion bar of the stabilizer or the pair of arms of the stabilizer are supported on the vehicle body side through the support means so as to allow torsional deformation of the stabilizer , A joint support hole having an axis that coincides with the axis of the torsion bar is provided, and the support means has a joint concentrically mounted in the joint support hole so that the arm can swing around the axis of the torsion bar. support to Runode, prevents the whirling around the support means when the torsion bar twists, the twist deformation can be performed smoothly and effectively exhibiting the function of the stabilizer vehicle ride Can be increased .

Also, the axis of the joint of the support means so were coincides with the axis of the torsion bar can be deformed twisted more smoothly the torsion bar.

According to the structure of claim 2 , the joint of the support means is constituted by a rubber bush joint in which the inner cylinder and the outer cylinder are fixed to the inner circumference and the outer circumference of the elastic body, respectively, and the inner cylinder is attached to the vehicle body side, Since the outer cylinder is attached to the joint support hole so that the axes of the inner cylinder, the outer cylinder, and the elastic body coincide with the axis of the torsion bar, friction is caused by sliding between the elastic body and the inner cylinder or the outer cylinder. It is possible to prevent generation of force and to enable smooth torsional deformation of the torsion bar.

  Hereinafter, reference examples and embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 3 show a first reference example, FIG. 1 is a perspective view of a stabilizer and its supporting means, FIG. 2 is an enlarged view of part 2 of FIG. 1, and FIG. is there.

  The stabilizer 11 includes a torsion bar 12 extending in the left-right direction of the vehicle body and a pair of arms 13, 13 extending from the left and right ends of the torsion bar 12 to the rear of the vehicle body, and mounting portions 13 a, 13 a at the tips of the arms 13, 13. Are connected to the suspension arms and knuckles of the left and right suspensions. The left and right ends of the torsion bar 12 are supported by the vehicle body 15 via support means 14 and 14, respectively.

  Since the left and right support means 14 and 14 have the same structure, one of them will be described. Basically, flat portions 12a pressed in the front-rear direction are formed at both ends of the torsion bar 12 having a circular cross section, and a bolt hole 12b penetrates the center of the flat portion 12a in the front-rear direction. The support means 14 includes a plate-like bracket 17 fixed to the vehicle body 15 with two bolts 16, 16. The bracket 17 and the flat portion 12 a of the torsion bar 12 are connected by a ball joint 18.

  The ball joint 18 includes a housing 19, a ball stud 20, a boot 21 and a nut 22, and the housing 19 is fixed to the bracket 17. The ball stud 20 includes a spherical head 20a that is swingably supported by the housing 19, a handle portion 20b that extends integrally from the spherical head 20a, and a male screw portion 20c that is formed at the tip of the handle portion 20b. The male screw portion 20 c passes through the bolt hole 12 b of the flat portion 12 a of the torsion bar 12 and is fixed by the nut 22. A rubber boot 21 covering the handle portion 20b is connected to the housing 19 and the flat portion 12a of the torsion bar 12 in order to protect the sliding surfaces of the housing 19 and the spherical head portion 20a from water and dust. The position of the spherical head 20a is biased forward of the vehicle body with respect to the axis L1 of the torsion bar 12.

  With the above configuration, when the vehicle travels on a rough road and the left and right wheels move up and down at different phases, an angular difference is generated between the left and right arms 13 and 13 of the stabilizer 11 so that the torsion bar 12 is twisted and elastically deformed. However, a load that causes the phases of the vertical movements of the left and right wheels to coincide with each other is generated by the restoring force.

  At this time, the ball joint 18 of the left and right support means 14 provided on the torsion bar 12 allows the torsion bar 12 to be freely twisted and deformed by the relative rotation of the housing 19 and the spherical head 20a. It is possible to enhance the ride comfort of the vehicle by reliably exhibiting the function of the vehicle.

  Thus, since the support means 14 of the first reference example allows torsional deformation of the torsion bar 12 via the ball joint 18, the elastic body used by the conventional support means becomes unnecessary, and the elastic body and The smooth torsional deformation of the torsion bar is not hindered by the friction force generated by the slip between the torsion bars and the slip between the elastic body and the holder of the vehicle body.

  4 and 5 show a second reference example. FIG. 4 is a perspective view of a stabilizer supporting means, and FIG. 5 is an enlarged sectional view taken along line 5-5 of FIG. In the following reference examples and embodiments, the constituent elements corresponding to the constituent elements of the reference examples and embodiments described before are denoted by the same reference numerals, and redundant description is omitted.

  The support means 14 of the second reference example also includes a ball joint 18 having the same structure as the ball joint 18 of the support means 14 of the first reference example, but the mounting structure is different. That is, the male threaded portion 20c of the ball stud 20 of the ball joint 18 passes through the bolt hole 17a of the bracket 17 and is fixed by the nut 22 via the washer 31, and the housing 19 of the ball joint 18 has two pieces. The first brackets 32 and 32 are welded, and the torsion bar 12 is fixed between the first brackets 32 and 32 and the second bracket 35 fixed thereto by bolts 33 and 33 and nuts 34 and 34. Is done.

  Also in this second reference example, the ball joint 18 of each support means 14 allows free torsional deformation of the torsion bar 12 by relative rotation of the housing 19 and the spherical head 20a, so that the function of the stabilizer 11 is ensured. The same effects as those of the first reference example can be obtained.

  Next, a third reference example will be described based on FIG.

  The third reference example is a modification of the first reference example, and each support means 14 includes a ball joint 18 attached to the torsion bar 12 of the stabilizer 11 as in the first reference example. Above this ball joint 18 is provided another ball joint 18 'in which the male thread portion 20c of the ball stud 20 is fixed to the bracket 17 of the vehicle body 15, and the housing of the upper and lower ball joints 18 and 18' having the same structure. 19 and 19 are connected by a stabilizer link 41.

  According to the third reference example, the lower ball joint 18 can provide the same operational effects as the first reference example, and further by the swing of the stabilizer link 41 that connects the upper and lower ball joints 18 and 18 '. The stabilizer 11 can be allowed to move in the left-right direction.

  7 and 8 show a fourth reference example. FIG. 7 is a perspective view of a support means for the stabilizer, and FIG. 8 is a view taken in the direction of arrow 8 in FIG.

  The supporting means of the fourth reference example includes an inner cylinder 51, an outer cylinder 52 arranged coaxially outside the inner cylinder 51, and a rubber made between the outer peripheral surface of the inner cylinder 51 and the inner peripheral surface of the outer cylinder 52. A rubber bush joint 54 is provided that is composed of a vulcanized and bonded annular elastic body 53. The torsion bar 12 is sandwiched between a fixing portion 55 formed integrally with the outer cylinder 52 of the rubber bush joint 54 and a fixing member 56 cooperating therewith, and the fixing member 56 is fastened to the fixing portion 55 with bolts 57 and 57. Thus, the rubber bush joint 54 is fixed to the torsion bar 12.

  Between the pair of support portions 17b, 17c of the U-shaped bracket 17 welded to the vehicle body 15, a rubber bush joint 54 having its axis L2 disposed in parallel with the axis L1 of the torsion bar 12 is fitted, and the support portions 17b, 17b, A bolt 58 penetrating 17 c and the inner cylinder 51 is fixed by a nut 59. At this time, a part of the elastic body 53 is exposed to the outer side in the left-right direction with respect to one end surface of the outer cylinder 52, and the exposed portion faces the support portion 17 b on the outer side in the left-right direction of the bracket 17 so as to be able to contact. The movement of the stabilizer 11 in the left-right direction is restricted.

  According to the fourth reference example, when the torsion bar 12 of the stabilizer 11 is twisted and deformed, the outer cylinder 52 fixed to the torsion bar 12 and the inner cylinder 51 fixed to the bracket 17 of the vehicle body 15 are annular. The elastic body 53 is relatively rotated while being sheared and deformed in the circumferential direction. As a result, free torsional deformation of the torsion bar 12 is allowed, and the function of the stabilizer 11 can be reliably exhibited to enhance the riding comfort of the vehicle.

  As described above, the support means 14 of the fourth reference example allows torsional deformation of the torsion bar 12 via the rubber bush joint 54, and the elastic body 53 is integrally fixed to the inner cylinder 51 and the outer cylinder 52. Therefore, it is possible to prevent the frictional force from being generated by the slip between the elastic body 53 and the inner cylinder 51 or the outer cylinder 52, and to enable smooth torsional deformation of the torsion bar 12.

  9 and 10 show a fifth reference example. FIG. 9 is a perspective view of a stabilizer support means, and FIG. 10 is a cross-sectional view taken along line 10-10 of FIG.

  The fifth reference example is a modification of the fourth reference example, and only the structure for fixing the outer cylinder 52 of the rubber bush joint 54 to the torsion bar 12 is different. That is, the outer cylinder 52 of the rubber bush joint 54 is provided with an extension 52a extending toward the torsion bar 12, and a flat part 12a obtained by pressing the torsion bar 12 flat is brought into contact with the end surface of the extension 52a. In the state, the pair of fixing claws 52b and 52b are bent to fix the flat portion 12a.

  Also according to the fifth reference example, the same effect as that of the fourth reference example can be achieved.

  FIG. 11 and FIG. 12 show an embodiment, FIG. 11 is a perspective view of a stabilizer support means, and FIG. 12 is a view in the direction of arrow 12 in FIG.

The embodiment uses a general rubber bush joint 54 composed of an inner cylinder 51, an outer cylinder 52, and an elastic body 53. The torsion bar 12 is flatly pressed at its end and curved into a U shape. The flat arm 13 extends continuously from the curved portion 12c. A circular joint support hole 12d having an axis L2 coinciding with the axis L1 of the torsion bar 12 is opened on one end side of the arm 13 connected to the curved portion 12c, and the rubber bush joint 54 is connected to the joint support hole 12d. The cylinder 52 is press-fitted concentrically . The inner cylinder 51 of the rubber bush joint 54 is fixed to the bracket 17 of the vehicle body 15 with bolts 58 and nuts 59.

  Also according to this embodiment, the same effect as the fourth reference example can be achieved, and the axis L1 of the torsion bar 12 and the axis L2 of the rubber bush joint 54 are made to coincide with each other. It is possible to prevent the rubber bush joint 54 from swinging around the axis L2 and to enable smoother torsional deformation.

  13 and 14 show a sixth reference example. FIG. 13 is a perspective view of a stabilizer support means, and FIG. 14 is a view in the direction of arrow 14 in FIG.

  In the sixth reference example, an elastic body support hole 12e is provided in a flat portion 12a formed at the end of the torsion bar 12 of the stabilizer 11, and a bobbin-like elastic body 61 is fitted into the elastic body support hole 12e. On the other hand, a bracket 17 fixed to the vehicle body 15 with bolts 16 and 16 is integrally provided with a support shaft 62 having an axis L3 extending rearward of the vehicle body and perpendicular to the axis L1 of the torsion bar 12. A male threaded portion 62 a at the tip of 62 penetrates the inner cylinder 63 and washer 64 vulcanized and bonded to the inner peripheral surface of the elastic body 61 and is fixed with a nut 65.

  According to the sixth reference example, when the torsion bar 12 of the stabilizer 11 is torsionally deformed, the torsion bar fitted to the outer periphery of the elastic body 61 supported on the vehicle body 15 via the bracket 17, the support shaft 62 and the inner cylinder 63. The 12 flat portions 12a are torsionally deformed around the axis L1 while compressing and deforming the elastic body 61, so that the function of the stabilizer 11 can be reliably exhibited and the riding comfort of the vehicle can be enhanced.

  Thus, since the support means 14 of the sixth reference example allows torsional deformation of the torsion bar 12 due to compression deformation of the elastic body 61, frictional force is generated by sliding between the elastic body 61 and the torsion bar 12. And torsional deformation of the torsion bar 12 can be allowed.

  15 and FIG. 16 show a seventh reference example, FIG. 15 is a perspective view of a stabilizer support means, and FIG. 16 is a view in the direction of arrow 16 in FIG.

  The seventh reference example uses a general rubber bush joint 74 composed of an inner cylinder 71, an outer cylinder 72 and an elastic body 73. The torsion bar 12 includes a flat portion 12a whose end is pressed flat, and a flat arm 13 is connected to the flat portion 12a. The outer cylinder 72 of the rubber bush joint 74 is press-fitted into the circular joint support hole 12d opened in the flat portion 12a, and passes through the support sections 17b and 17c of the bracket 17 fixed to the vehicle body 15 and the inner cylinder 71 of the rubber bush joint 74. A nut 65 is fixed to the male screw portion 62a of the support shaft 62 made of a bolt.

  According to the seventh reference example, when the torsion bar 12 of the stabilizer 11 is torsionally deformed, the elastic body 73 of the rubber bush joint 74 is compressed and deformed. Therefore, the same effect as the sixth reference example can be achieved. it can.

  17 and 18 show an eighth reference example. FIG. 17 is a perspective view of a stabilizer support means, and FIG. 18 is a cross-sectional view taken along line 18-18 of FIG.

  The eighth reference example is a modification of the sixth reference example. In the sixth reference example, the axis L3 of the support shaft 62 extends in the longitudinal direction of the vehicle body and is orthogonal to the axis L1 of the torsion bar 12. 8 The axis L3 of the support shaft 62 of the reference example extends in the vertical direction and is orthogonal to the axis L1 of the torsion bar 12. The elastic bodies 81 and 82 divided into two in the vertical direction are fitted into the elastic body support holes 12e of the flat portion 12a of the torsion bar 12, and the male threaded portion of the support shaft 62 passing through these elastic bodies 81 and 82 from below to above. A nut 65 is fixed to 62a through a washer 64.

  Also according to the eighth reference example, the same effect as that of the sixth reference example can be achieved.

  19 and 20 show a ninth reference example. FIG. 19 is a perspective view of a stabilizer supporting means, and FIG. 20 is a sectional view taken along the line 20-20 in FIG.

  The ninth reference example is a modification of the eighth reference example. In the eighth reference example, the support shaft 62 is provided on the vehicle body 15 side, whereas in the ninth reference example, the support shaft 62 is provided on the torsion bar 12 side. Provided. That is, of the first bracket 93 and the second bracket 94 fixed by the bolts 91 and 91 and the nuts 92 and 92 across the torsion bar 12, the lower second bracket 94 is connected to the axis L 1 of the torsion bar 12. And a support shaft 62 extending downward so as to be orthogonal to each other. Elastic bodies 81 and 82 that are divided into two parts so as to sandwich the bolt hole 15a formed in the vehicle body 15 are disposed, and washers 95 and 96 are superimposed on the upper and lower surfaces of the elastic bodies 81 and 82. A nut 65 is fixed to the male threaded portion 62a at the tip of the support shaft 62 that passes through the bolt holes 15a of the body holes 95 and 96 and the vehicle body 15.

  Also according to the ninth reference example, it is possible to achieve the same effect as the eighth reference example.

  As mentioned above, although the reference example and embodiment of this invention were explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.

  For example, in the fourth reference example, the fifth reference example, and the embodiment, the axis L1 of the torsion bar 12 and the axis L2 of the rubber bush joint 54 are arranged in parallel, but a modification of the fourth reference example shown in FIG. As an example, both axes L1 and L2 may be non-parallel. In the fourth reference example, the fifth reference example, and the embodiment, the inner cylinder 51 of the rubber bush joint 54 is fixed to the vehicle body 15 and the outer cylinder 52 is fixed to the torsion bar 12. However, the relationship is reversed. The outer cylinder 52 may be fixed to the vehicle body 15 and the inner cylinder 51 may be fixed to the torsion bar 12.

The perspective view of the stabilizer which concerns on a 1st reference example, and its support means 2 enlarged view of FIG. 3 direction arrow view of FIG. The perspective view of the support means of the stabilizer which concerns on a 2nd reference example FIG. 4 is an enlarged sectional view taken along line 5-5. The perspective view of the stabilizer which concerns on a 3rd reference example, and its support means The perspective view of the support means of the stabilizer which concerns on a 4th reference example 8 direction arrow view of FIG. The perspective view of the support means of the stabilizer which concerns on a 5th reference example Sectional view taken along line 10-10 in FIG. The perspective view of the support means of the stabilizer which concerns on embodiment 12 direction arrow view of FIG. The perspective view of the support means of the stabilizer which concerns on a 6th reference example 14 direction arrow view of FIG. The perspective view of the support means of the stabilizer which concerns on a 7th reference example 16 direction arrow view of FIG. The perspective view of the support means of the stabilizer which concerns on an 8th reference example 18-18 sectional view of FIG. The perspective view of the support means of the stabilizer which concerns on a 9th reference example 19 is a sectional view taken along line 20-20 in FIG. The figure corresponding to the said FIG. 8 which shows the modification of a 4th reference example

12 Torsion bar 12c Bending portion 13 Arm 14 Support means 15 Car body 51 Inner cylinder 52 Outer cylinder 53 Elastic body 54 Rubber bush joint (joint)
L1 Torsion bar axis L2 Joint axis

Claims (4)

A twist deformable torsion bar (12), one end of a pair of arms (13) the other end continuous with the both ends are connected to the suspension side of the torsion bar (12), before Kia over arm (13 ) In the support structure to the vehicle body of the stabilizer supported on the vehicle body (15) side through the support means (14),
The arm (13) is provided with a joint support hole (12d) having an axis (L2) coinciding with the axis (L1) of the torsion bar (12),
The support means (14) has a joint (54) concentrically mounted in the joint support hole (12d), and the arm (13) is moved around the axis (L1) of the torsion bar (12). swingably supported to the support structure to the vehicle body of the stabilizer, characterized in Rukoto. The joint of the support means (14) is constituted by a rubber bush joint (54) in which an inner cylinder (51) and an outer cylinder (52) are fixed to the inner circumference and the outer circumference of the elastic body (53), respectively. 51) is attached to the vehicle body side, while the outer cylinder (52) is connected to the axis (L2) of the inner cylinder (51), outer cylinder (52) and elastic body (53) as the axis of the torsion bar (12). The stabilizer support structure for a vehicle body according to claim 1, wherein the stabilizer is inserted into the joint support hole (12d) so as to coincide with (L1) .   The stabilizer support structure for a vehicle body according to claim 1 or 2, wherein the support means (14) is provided on the one end side of the arm (13).   Near both ends of the torsion bar (12) has a curved portion (12c) that extends forward or backward in the vehicle front-rear direction with respect to the support means (14) and curves to the opposite side of the arm (13). The support structure to the vehicle body of the stabilizer of any one of Claims 1-3 characterized by these.

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