CN1806741A - Vertical electric dust collector - Google Patents

Abstract

An object of the present invention is to provide an upright electric vacuum cleaner which can be easily installed with an extended suction pipe, and can be cleaned immediately using the extended suction pipe during floor cleaning. The vertical electric vacuum cleaner of the present invention has: a vacuum cleaner main body with an electric blower and a dust collection mechanism; a suction body arranged at the lower part of the vacuum cleaner main body; a handle arranged at the upper part of the vacuum cleaner main body; The front end and the extended suction pipe that can be retracted freely are characterized in that a retractable cylindrical portion on the front end side of the extended suction pipe that can be detachably stored is provided on the main body of the vacuum cleaner.

Description

Upright Electric Vacuum Cleaner

technical field

The invention relates to an upright electric vacuum cleaner.

Background technique

For example, there is an upright electric vacuum cleaner disclosed in Japanese Unexamined Patent Application Publication No. 2000-157450 (Patent Document 1).

This type of electric vacuum cleaner is provided with a suction hose in addition to the floor suction body. Replace and install various suction ports on the front end of the suction hose to sweep places other than the ground. In order to sweep high places such as ceilings, it is equipped with an extended suction pipe.

The installation of the extension suction pipe of the upright electric vacuum cleaner equipped with the extension suction pipe is troublesome. In addition, the upright electric vacuum cleaner may also be used to sweep the floor while cleaning using the extended suction pipe, and there is a disadvantage that the extended suction pipe cannot be used immediately.

Contents of the invention

It is an object of the present invention to solve the above problems and provide an upright electric vacuum cleaner in which the installation of the extended suction pipe is simple, and sweeping with the extended suction pipe can be performed immediately during floor cleaning.

The invention provides a vertical electric vacuum cleaner, which has: a vacuum cleaner main body with an electric blower and a dust collection mechanism; a suction body arranged at the lower part of the vacuum cleaner main body; a handle arranged at the upper part of the vacuum cleaner main body; The front end of the suction hose, and the extended suction pipe that can be retracted freely, is characterized in that a retractable cylindrical portion that can detachably store the front end side of the extended suction pipe is provided on the main body of the vacuum cleaner.

According to the present invention, the extended suction tube can be stored by inserting the front end side of the extended suction tube into the retractable tube, and cleaning using the extended suction tube can be performed immediately by taking out the extended suction tube from the retractable tube.

Description of drawings

Fig. 1 is a longitudinal sectional view of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 2 is a longitudinal sectional view of a main body of an electric vacuum cleaner according to an embodiment of the present invention.

Fig. 3 is an exploded perspective view of the electric vacuum cleaner according to the embodiment of the present invention.

Fig. 4 is a diagram showing a state where the electric vacuum cleaner is placed upright according to the embodiment of the present invention.

Fig. 5 is a diagram showing the state of sweeping with the extended suction pipe according to the embodiment of the present invention.

Fig. 6 is a view showing the state of sweeping the floor with the suction body according to the embodiment of the present invention.

Fig. 7 is a diagram showing a state in which the mouthpiece body of the suction body and the dust ventilation connection pipe are bent almost at right angles, relating to an embodiment of the present invention.

Fig. 8 is a diagram showing an almost straight state of the suction port body and the dust ventilation connecting pipe of the suction body according to the embodiment of the present invention.

Fig. 9 is a diagram showing a top view of the inhalation body from above with the upper cover of the inhalation body removed, relating to the embodiment of the present invention.

Fig. 10 is an enlarged view showing part (I) of Fig. 9 according to an embodiment of the present invention.

Fig. 11 is a sectional view of A-A of Fig. 10 related to the embodiment of the present invention.

Fig. 12 is a diagram showing the dust flow path from the suction body to the dust cover and the dust flow path from the extended suction pipe to the dust cover, according to an embodiment of the present invention.

Fig. 13 is a view of the dust cover housed in the dust cover storage part of the main body of the vacuum cleaner seen from the front according to the embodiment of the present invention.

Fig. 14 is a side view of the main body of the vacuum cleaner with the dust cover retractable according to the embodiment of the present invention.

Fig. 15 is a B-B sectional view of Fig. 13 related to an embodiment of the present invention.

Fig. 16 is a view when the dust cover is taken out from the dust cover storage part of the vacuum cleaner main body seen from the front according to the embodiment of the present invention.

Fig. 17 is a side view of the embodiment of the present invention when the dust cover is taken out from the dust cover storage part of the main body of the vacuum cleaner.

Fig. 18 is a sectional view of C-C of Fig. 16 related to the embodiment of the present invention.

Fig. 19 is a diagram of a dust cover seen from the surface (front) related to an embodiment of the present invention.

Fig. 20 is a D-D sectional view of Fig. 19 related to an embodiment of the present invention.

Fig. 21 is a view of a dust cover seen from behind, relating to an embodiment of the present invention.

Figure 22 is a view of the dust ventilation inner duct seen from above, relating to an embodiment of the present invention.

Fig. 23 is an E-E sectional view of Fig. 22 related to an embodiment of the present invention.

Fig. 24 is an enlarged view showing part (II) of Fig. 23 according to an embodiment of the present invention.

Fig. 25 is a view of the connection seat seen from the branch port related to the embodiment of the present invention.

Fig. 26 is a sectional view of F-F of Fig. 25 related to the embodiment of the present invention.

Fig. 27 is a diagram showing a case where a tube for power measurement is inserted into a connection socket according to an embodiment of the present invention.

Fig. 28 is a diagram of the lower main body cover seen from the inside according to the embodiment of the present invention.

Fig. 29 is a G-G sectional view of Fig. 28 related to an embodiment of the present invention.

Fig. 30 is an enlarged view showing part (III) of Fig. 29 according to an embodiment of the present invention.

Fig. 31 is a diagram showing the case where the extended suction tube is inserted into the retractable cylinder according to the embodiment of the present invention.

Fig. 32 is a diagram showing the extension suction pipe inserted into the retractable cylinder (when the setting is completed) according to the embodiment of the present invention.

Fig. 33 is a diagram showing a state in which the extension suction tube is extended according to the embodiment of the present invention.

Fig. 34 is a diagram showing a shortened and extended suction pipe according to an embodiment of the present invention.

Fig. 35 is a sectional view taken along line H-H of Fig. 34 related to the embodiment of the present invention.

Fig. 36 is a diagram showing the unlocked state of the suction pipe lock mechanism included in the extension suction pipe according to the embodiment of the present invention.

Fig. 37 is an I-I sectional view of Fig. 36 related to an embodiment of the present invention.

Fig. 38 is a diagram showing the front end side of the extended suction pipe according to the embodiment of the present invention.

Fig. 39 is a J-J sectional view of Fig. 38 related to the embodiment of the present invention.

Fig. 40 is another view showing the front end side of the extended suction pipe according to the embodiment of the present invention.

Fig. 41 is a K-K sectional view of Fig. 40 related to the embodiment of the present invention.

Fig. 42 is a diagram showing an alternative suction port on the front end side of the extended suction pipe according to the embodiment of the present invention.

Fig. 43 is a diagram showing an example of the present invention when the replacement suction port of the extended suction pipe is replaced with the brush side.

In the picture:

48...electric blower, 26...dust cover (dust collection mechanism), 1...vacuum cleaner main body, 2...suction body, 3...handle, 7...suction hose, 6...extended suction pipe, 9...retractable cylinder.

Detailed ways

Hereinafter, examples related to embodiments of the invention will be described with reference to the drawings.

First, it will be described with reference to FIGS. 1 to 8 .

The electric vacuum cleaner has: a vacuum cleaner main body 1 ; a suction body 2 detachably mounted on the lower part of the vacuum cleaner main body 1 ; and a handle 3 foldable on the upper part of the vacuum cleaner main body 1 .

The handle 3 is rotatably supported on the handle support shaft 4 of the main body 1 of the vacuum cleaner. Generally, as shown in FIG. 6 , the handle 3 is erected to clean the ground. The handle 3 has a clip 5, and the upright state of the handle 3 can be constrained by the clip 5, so the handle 3 cannot be folded during cleaning. When retracting, fold the retractable handle 3 as shown in Fig. 1 and Fig. 2 .

As shown in FIG. 6, the suction body 2 is used for sweeping the ground. The extended suction pipe 6 is used for cleaning high places, sofas, corners, etc. as shown in FIG. 5 .

The extended suction pipe 6 is arranged on the front end of the flexible suction hose 7 protruding from the main body 1 of the vacuum cleaner, and can be flexibly stretched. Pull out the extended suction pipe 6 at a high place for sweeping. The suction pipe 6 can be shortened and extended in a narrow place. Since it is a method of use according to the place of use, it is easy to use.

As shown in FIGS. 4 and 5 , the suction hose 7 is slidably supported by a hose guide ring 8 provided on the cleaner main body 1 . The extended suction pipe 6 is detachably inserted into and installed in the retractable cylinder part 9 provided on the main body 1 of the vacuum cleaner. A C-shaped hose receiving portion 20 is provided near the bottom of the handle 3 on the main body 1 of the vacuum cleaner.

When using the extended suction pipe 6 to clean, take out the suction hose 7 from the hose receiving part 20, and pull out the suction hose 7 that is slidably elongated in the hose guide ring 8 for cleaning. Cleaning of high places is also possible.

When retracting, the suction hose 7 shrunk to a very short length is embedded and held in the hose receiving portion 20 , and the extended suction pipe 6 is inserted into the retractable cylinder portion 9 . Thereby, since the suction hose 7 and the extended suction pipe 6 are accommodated close to the cleaner main body 1, it is easy to store and store without rattling.

As shown in FIG. 7 and FIG. 8 , the suction body 2 has a suction mouth body portion 21 and a dust ventilation connection pipe portion 22 connected to the vacuum cleaner main body 1 .

The suction body 21 has a suction port 23, and the suction port 23 is provided with a rotating brush 24 for sweeping up dust. The mouthpiece body 21 and the dust ventilation connecting pipe 22 are combined by a freely rotatable rotating joint 25 . The suction mouth body 21 and the dust ventilation connecting pipe 22 take the rotating joint 25 as a fulcrum, and can be bent almost at a right angle as shown in FIG. 7 or rotated to a straight extension state as shown in FIG. 8 .

Utilize the channel of the rotating joint part 25 to communicate with the suction port 23 of the suction port body part 21 and the inside of the dust ventilation connecting pipe part 22 . The pivot joint 25 also functions as a shutter for the suction port. The swivel joint 25 can be closed by being bent almost at a right angle as shown in FIG. Thereby, the communication between the mouthpiece body part 21 and the dust ventilation connection pipe part 22 can be interrupted.

As shown in FIG. 8 , the valve for the suction port can be opened to ensure the communication between the suction port body part 21 and the dust ventilation connecting pipe part 22 by turning it into a straightly extending state. Cleaning using the suction body 2 is performed in a state in which the suction pipe 2 is extended almost straight as shown in FIG. 8 .

When bent almost at right angles as shown in FIG. 7 , the suction gate of the swivel joint 25 is closed, so cleaning using the suction body 2 cannot be performed. Instead, sweeping using the extended suction pipe 6 is performed. Even in the state where the suction port gate of the rotary coupling part 25 is opened as shown in FIG. 8, the extended suction pipe 6 can be used for sweeping, but since the suction body 2 and the extended suction pipe 6 suck together, the suction force of both sides will decrease. , so its use is not recommended.

FIG. 12 is a diagram illustrating the dust flow path from the suction body 2 to the dust cover 26 and the dust flow path from the extended suction pipe 6 to the dust cover 26 for easy understanding. As can be understood from this figure, the suction body 2 is connected to the dust hood 26 by means of a dust ventilation inner duct 27 . In addition, the extension suction pipe 6 is connected to the dust cover 26 on the way from the dust ventilation inner duct 27 .

In this way, the suction body 2 and the extension suction pipe 6 can be connected in a branched manner by using the dust ventilation inner duct 27 and the dust cover 26. Therefore, when the suction port gate of the rotary joint 25 is opened, the extension suction pipe 6 is closed for cleaning by the suction body 2. . When the shutter for the suction port of the pivot joint part 25 is closed, cleaning by the extended suction pipe 6 is performed.

In this way, by bending the suction body 2 at a right angle (putting the cleaner body 1 upright) or straight (putting the cleaner body 1 down), cleaning by the suction body 2 and cleaning by the extended suction pipe 6 are facilitated alternately. Vacuum cleaners with good usability are available.

In conjunction with Fig. 9, Fig. 10 and Fig. 11, the relevant rotation restraining mechanism is described.

As described above, the electric vacuum cleaner is used with the vacuum cleaner main body 1 upright or with the vacuum cleaner main body 1 down. For this reason, it is provided with the rotation restraining mechanism which can turn to the down state easily while maintaining the state of the cleaner main body 1 standing upright. The suction body 2 is equipped with this rotation suppression mechanism.

As shown in FIGS. 7 and 8 , the mouthpiece body 21 of the inhalation body 2 has an upper cover 28 and a lower cover 29 . 9 , 10 , and 11 show the inside of the lower cover 29 with the upper cover 28 removed.

The mouthpiece body part 21 of the suction body 2 has a large rear wheel 40 at a distance from the rear side of the mouthpiece body 23 . The lower front side of the suction port body 23 has a small front wheel 41 . The axis of the pivot joint 25 is located near the axis of rotation of the rear wheel 40 . Since the suction body 2 is supported by four front and rear wheels, it can stand on its own in a state where the vacuum cleaner main body 1 is erected.

The lower cover 29 of the suction port body 21 is provided with a leaf spring 42 adjacent to the rotating coupling portion 25 . The leaf spring 42 has a longitudinally elongated bulge 43 at the center. Protrusions 44 are provided on the rotation shaft 44 of the dust ventilation connecting pipe portion 22 constituting the rotation coupling portion 25 . The protrusion 45 and the raised portion 43 of the leaf spring 42 can form a rotation restraining mechanism.

The protrusion 45 and the raised portion 43 are provided opposite to each other and the rotation restraining mechanism is provided so that the protrusion 45 slides on the leaf spring 42 . By rotating the dust ventilation connection pipe part 22 relative to the suction mouth body part 21 , the protrusion 45 of the dust ventilation connection pipe part 22 hits the raised part 43 of the leaf spring 42 . Also, if the dust ventilation connecting pipe portion 22 is rotated firmly again, the leaf spring 42 is bent, and the raised portion 43 avoids retreating, so the protrusion 45 rotates beyond the top of the raised portion 43 . When the protrusion 45 exceeds the top of the protruding portion 43, the deformation of the leaf spring 42 is restored, so that the reverse rotation of the dust ventilation connecting pipe portion 22 can be suppressed.

The positions of the protrusion 45 and the protruding portion 43 of the rotation suppressing mechanism are positioned so that the rotation in the reverse direction occurs when the cleaner main body 1 is erected immediately. Therefore, the state where the cleaner main body 1 is erected can be maintained. That is, in the state where the cleaner main body 1 is positioned above the suction body 2, it is possible to suppress the rotation that the cleaner main body 1 falls to the rear side. Since the cleaner main body 1 does not fall down, high place cleaning using the extended suction pipe 6 can be performed without hindrance. When inverting the main body 1 of the vacuum cleaner, rotate it against the rotation restraining mechanism by turning it slightly in the opposite direction with force.

3, 1, 2, 22, 23, 24 to illustrate the structure of the main body 1 of the vacuum cleaner.

The body cover forming the outer contour of the cleaner body 1 is composed of a lower body cover 46 and an upper body cover 47 . The handle 3 is rotatably attached to the upper part of the lower main body cover 46 using the handle support shaft 4 .

The main body cover 46 houses the electric blower 48 , the winding shaft 49 , the dust ventilation internal duct 27 and the suction cover 60 for the electric blower. The dust ventilation internal duct 2 is located on the lower side, and the cord spool 49 is superimposed on the upper surface, and the electric blower suction cover 60 is superimposed on the upper surface, and is accommodated in the main body cover 46 .

As shown in FIG. 22 , FIG. 23 , and FIG. 24 , the dust ventilation inner duct 27 has a connection base 61 , a communication pipe 62 , and a dust cover connection pipe portion 63 . The connection base 61 has a branch port 65 connected to the suction hose 64 .

The connecting pipe 62 is provided with a flat portion 66 that crushes the side facing the winding shaft 49 at the place where it overlaps with the winding shaft 49 . The flat part 66 has about half the thickness of other parts, so the thickness of the main body cover can be made narrower and more compact.

However, in order to ensure the cross-sectional area of the air passage at the flat portion 66, it is thickened in the lateral direction.

In addition, the flat portion 66 is provided with a plurality of ribs 67 . When the communication pipe 62 formed by blow molding (synthetic resin) is heated, the flat portion 66 is easily thermally deformed. Thermal deformation of the flat portion 66 can be suppressed by the rib 67 .

Referring to Fig. 3, Fig. 28, Fig. 29 and Fig. 30, the suction valve for electric blower protection will be described.

The suction valve 68 for protecting the electric blower is attached to the connection ring 69 of the suction cover 60 for the electric blower. The connecting ring 69 is connected to the suction portion of the electric blower 48 by means of an intermediate ring 80 .

The intake valve 68 for electric blower protection absorbs outside air, and suppresses the temperature rise of the electric blower 48 . When closing the suction gate of the rotary joint 25 of the suction body 2 and blocking the suction of the extended suction pipe 6, the temperature rise of the electric blower 48 can be suppressed by inflowing outside air from the suction valve 68 for protection of the electric blower.

The suction valve 68 for electric blower protection is located on the downstream side of the dust cover 26 and the suction side of the electric blower 48 . The lower main body cover 46 is provided with vent holes 81 through which outside air flows. This vent hole 81 is also provided between the downstream side of the dust cover 26 and the suction side of the electric blower 48 . External air is sucked into the electric blower through the suction valve 68 for protecting the electric blower provided at the vent hole 81 , thereby suppressing the temperature rise of the electric blower 48 .

The suction valve 68 for electric blower protection has a valve body 82 and a valve body urging spring 83 . The valve body urging spring 83 is biased to close the valve body 82 . If the suction body 2 is blocked, the suction of the suction pipe 6 is extended, and the negative pressure on the suction side of the electric blower 48 is strengthened, the valve body 82 resists the valve body biasing spring 83 to open, and then the outside air flows in.

As Fig. 3, Fig. 19, Fig. 20, the dust cover 26 of the dust collecting mechanism shown in Fig. 21 has the swirl dust collecting part 84 that accumulates coarse dust, the fine dust dust collecting part 85 that accumulates fine dust and the cyclone dust collecting part 85 that accumulates fine dust. The operation button 86 of the combination mechanism that the part 84 and the fine dust collecting part 85 can be attached and detached freely.

Moreover, the cyclone dust collection part 84 has the dust inflow port 87 to which the said connection pipe part 63 for dust covers is detachably connected. In addition, the fine dust collecting unit 85 has a fine dust filter 88 and a dust remover 89 . An operation button 86 of the coupling mechanism, a dust inlet 87 , a fine dust filter 88 , and a dust removal device 89 are provided on the back side of the dust cover 26 .

The dust cover 26 is detachably accommodated in the dust cover storage part 100 provided in the main body cover 47 of the cleaner main body 1 . The back side of the dust cover 26 is stored towards the inside of the dust cover storage part 100, so the operation button 86, the dust inlet 87, the fine dust filter 88, and the dust removal device 89 cannot be seen from the surface, which can provide a simple appearance and shape. electric vacuum cleaner.

Attachment and detachment of the dust cover will be described with reference to FIGS. 13 to 18 .

13 to 15 show the state in which the dust cover 26 is stored in the dust cover storage part 100 . 16 to 18 show the state when the dust cover 26 starts to be taken out from the dust cover storage part 100 .

As shown in FIGS. 15 and 18 , the upper side of the dust cover 26 has a wider width at the rear side (back side) than the front side width as the front side. In addition, the upper side of the dust cover housing part 100 has a narrower frontal width than the rear side width. In addition, the width of the rear side (back side) of the upper side part of the dust cover 26 is made narrower than the front width of the upper side of the dust cover storage part 100 .

Press the hook button 101 on the upper side of the dust cover 26 to separate the connection with the vacuum cleaner main body 1. If the upper part of the dust cover is pulled out to the front and tilted slightly, the rear side (inner side) of the dust cover 26 and the dust cover will be closed. The front surface of the placing part 100 is in contact with and held.

This holding prevents the dust cover 26 from falling off when it is taken out. The removal of the dust cover 26 becomes easy.

As shown in FIG. 4 , FIG. 5 , and FIG. 6 , a prying protrusion 102 is provided on the lower surface side of the main body cover 46 , and flocking 103 is provided on the front end side of the prying protrusion 102 . The flocking 103 is in contact with the ground when sweeping the ground as shown in FIG. 6 , so the ground is not damaged.

In addition, flocking 104 is also given to the lower part side which contacts the ground|floor in the said storage and storage cylinder part 9. As shown in FIG. The flocking 103 is in contact with the ground when sweeping the ground as shown in FIG. 6 , so the ground is not damaged.

In conjunction with Fig. 25, Fig. 26 and Fig. 27, the measurement of the amount of work related to the electric vacuum cleaner is described.

The inner diameter of the connection seat 61 is formed to increase outwardly including the branch port 65 . Since the branch port 65 can be closed by inserting the tube 105 for measuring the amount of work, no other tool for closing the branch port 65 is required, and the measurement can be performed easily.

The extended suction pipe will be described in detail with reference to FIGS. 31 to 43 .

As shown in FIGS. 33 to 37 , the extended suction pipe 6 is formed by slidably connecting a plurality of suction pipes 120 , 121 , 122 having different thicknesses. The front end of the fine suction pipe 120 is provided with a replacement suction port 123 which can be replaced by rotation.

Prolong suction pipe 6 flexible. After stretching, sweep away high places such as the ceiling. Sweep out the stenosis after shortening.

The extended suction pipe 6 is provided with suction pipe lock mechanisms 124 and 125 .

The suction pipe lock mechanism 125 is provided on the front side of the rough suction pipe 122 . The suction pipe lock mechanism 125 has a fitting protrusion 126 . The engaging protrusion 126 is engaged with the engaging hole of the medium and coarse suction pipe 121, and can maintain an elongated state.

When the knob 127 of the suction pipe lock mechanism 125 moves in the W direction, the engagement protrusion 126 is disengaged from the engagement hole, and the constraint of the suction pipe lock mechanism 125 can be released. It can be contracted so that the middle and rough suction pipe 121 is accommodated in the rough suction pipe 122 .

The suction pipe locking mechanism 124 is provided on the front side of the middle and coarse suction pipe 121 . The suction pipe lock mechanism 124 has a rod 128 whose inner end protrudes and fits into a fitting hole 129 of the fine suction pipe 120 so as to be able to maintain the elongated state.

When the medium coarse suction pipe 121 is housed in the coarse suction pipe 122, the rod 128 hits the suction pipe lock mechanism 125, and the rod 128 moves in the outer peripheral direction. Since the inner end protrusion of the operating lever 128 is disengaged from the fitting hole 129 of the thin suction pipe 120, the restriction of the suction pipe lock mechanism 124 can be released. It can be contracted so that the fine suction pipe 120 is accommodated in the middle coarse suction pipe 121 .

In this way, the extended state of the extended suction pipe 6 can be reliably maintained by the restraint by the suction pipe lock mechanism. The extended suction pipe 6 can be shortened easily by releasing the restriction of the suction pipe lock mechanism.

The tip of the fine suction pipe 120 is rotatably supported by a support shaft 140 instead of the suction port 123 . The replacement mouthpiece 123 has two mouthpiece parts 141 , 142 . The mouthpiece 141 is provided with a brush 143 .

By rotating the replacement nozzle 123, the brushless nozzle part 142 (FIG. 42) and the brushed nozzle part 142 (FIG. 43) can be replaced.

When setting the nozzle part 142 without a brush, as shown in FIG. 39, it can hold|maintain this state by using the holding|maintenance mechanism 144 (concavity and convexity) of a lock pin.

When the suction mouth portion 142 of the brush is set, this state can be maintained by using the holding mechanism 145 (protrusion) of the lock pin as shown in FIGS. 40 and 41 .

In this way, it is convenient to replace the replacement nozzle by turning it. In addition, the holding mechanism using the lock pin can maintain the replacement state of both sides, so the replacement suction mouth does not need to be simply turned and retracted during use, which is convenient for use.

As shown in Fig. 31 and Fig. 32, the bottom of the retractable cylindrical part 9r of the retractable and extended suction pipe 6 is closed. The storage tube 9 has an annular seal 146 at the receiving port. A flange 147 is provided on the outer periphery of the rough suction pipe 122 which extends the suction pipe 6 .

If the shortened extended suction pipe 6 is inserted into the retractable cylinder portion 9, the flange 147 will be closely attached to the sealing member 146 to ensure airtightness. Since the bottom of the retractable tube part 9 is closed, the suction of the extended suction pipe 6 can be blocked. Since there is only suction of the suction body 2, the suction of the suction body 2 can be performed smoothly.

In this way, the suction of the extension suction pipe 6 is blocked, but the stop valve is not provided, so the configuration is simple and inexpensive. In addition, storing the extended suction pipe 6 in the cylindrical portion 9 can prevent the suction of the extended suction pipe 6, so the operation is simple.

The retractable cylinder portion 9 has a suction pipe holding mechanism 148 . The suction pipe holding mechanism 148 is provided at the receiving port of the storage tube part 9 . The suction pipe holding mechanism 148 has a pin lock 149 , a pin lock biasing spring 150 , and a return lever 151 .

When the extended suction pipe 6 is inserted into the storage tube 9 , the pin lock 149 fits into the flange 147 and is securely held in the storage tube 9 . Therefore, in the ground cleaning by the suction body 2, the removal of the extension suction pipe 6 from the storage tube 9 does not hinder the cleaning.

The extension suction pipe 6 can be easily detached from the storage tube 9 by moving the pin lock 149 back and turning the return lever 151 .

Claims (11)

1. A vertical electric vacuum cleaner, having: a vacuum cleaner main body with an electric blower and a dust collection mechanism; a suction body arranged at the bottom of the above-mentioned vacuum cleaner main body; a handle arranged at the upper part of the above-mentioned vacuum cleaner main body; The front end of the suction hose, and the extended suction pipe that can be stretched freely, is characterized in that, A housing tube portion for detachably housing the front end side of the extended suction pipe is provided on the cleaner main body. 2. The upright electric vacuum cleaner according to claim 1, characterized in that, The bottom of the above-mentioned retractable tube part is closed. 3. The upright electric vacuum cleaner according to claim 2, characterized in that, A tubular sealing member is provided at the receiving port of the above-mentioned retractable cylinder portion. 4. The upright electric vacuum cleaner according to claim 3, characterized in that, A flange abutting against the sealing member is provided on the outer periphery of the extended suction pipe. 5. The upright electric vacuum cleaner according to claim 4, characterized in that, The telescopic portion of the extended suction pipe is configured to be located on the front side of the flange, and the front side of the flange including the telescopic portion is inserted into the retractable tube portion. 6. The upright electric vacuum cleaner according to claim 1, characterized in that, The above-mentioned extended suction pipe is formed by slidably combining a plurality of suction pipes having different thicknesses, and a replacement suction port that can be replaced by rotation is provided at the tip of the thin suction pipe. 7. The upright electric vacuum cleaner according to claim 6, characterized in that, The above-mentioned extended suction pipe is provided with a suction pipe locking mechanism that constrains or releases the expansion and contraction of the above-mentioned suction pipe. 8. The upright electric vacuum cleaner according to claim 6, characterized in that, The replacement nozzle has two nozzle parts, and a brush is provided on one nozzle part, and a holding mechanism for holding the replacement nozzle in a predetermined setting state is provided. 9. The upright electric vacuum cleaner according to claim 4, characterized in that, A suction pipe holding mechanism is provided so that the extended suction pipe accommodated in the retractable cylinder does not fall off. 10. The upright electric vacuum cleaner according to claim 9, characterized in that, The above-mentioned suction pipe holding mechanism is provided on the above-mentioned retractable cylinder portion, and the above-mentioned flange is locked by the above-mentioned suction pipe holding mechanism. 11. The upright electric vacuum cleaner according to claim 1, characterized in that, When the ground is swept, the lower side of the above-mentioned retractable tube portion which is in contact with the ground is flocked.

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