JP2016211611A - Clutch unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress vibration and noise which are generated at a brake-side clutch part at a lever operation.SOLUTION: A clutch unit is composed of a lever-side clutch part 11 which is arranged at an input side, and controls the transmission and block of rotation torque which is inputted by a lever operation; and a brake-side clutch part 12 which is arranged at an output side, transmits the rotation torque from the lever-side clutch part 11 to an output side, and blocks the rotation torque which is inversely inputted from the output side. The brake-side clutch part 12 comprises a side plate 25 which constitutes a stationary member whose rotation is constricted, an outer ring 23 and cover 24, and a vibration-proof material 21 is interposed between the side plate 25 and the outer ring 23.SELECTED DRAWING: Figure 1

Description

  The present invention includes a lever-side clutch portion to which rotational torque is input by lever operation, a brake-side clutch portion that transmits rotational torque from the lever-side clutch portion to the output side, and interrupts rotational torque from the output side. It is related with the clutch unit provided with.

  In general, in a clutch unit using an engagement element such as a cylindrical roller or a ball, a clutch portion is disposed between an input member and an output member. The clutch portion is configured to control transmission and interruption of rotational torque by engaging and disengaging an engaging member such as a cylindrical roller or a ball between the input member and the output member.

  The present applicant has previously proposed a clutch unit incorporated in an automobile seat lifter that adjusts the seat seat up and down by lever operation (see, for example, Patent Document 1). The clutch unit disclosed in Patent Document 1 transmits a rotational torque from the lever side clutch portion to which the rotational torque is input by lever operation, and the rotational torque from the lever side clutch portion to the output side, and the rotational torque from the output side. And a brake-side clutch portion that shuts off.

  The lever-side clutch part includes an outer ring to which rotational torque is input by lever operation, an inner ring that transmits the rotational torque input from the outer ring to the brake-side clutch part, and a wedge clearance formed between the outer ring and the inner ring. A plurality of cylindrical rollers that control the transmission and interruption of rotational torque from the outer ring by engaging and disengaging them, a cage that holds the cylindrical rollers at equal intervals in the circumferential direction, and an elastic force accumulated by the rotational torque from the outer ring When the rotational torque is no longer input, the main part is composed of two centering springs that return the cage and the outer ring to the neutral state by the accumulated elastic force.

  The brake-side clutch unit is configured to output the output shaft through engagement and disengagement up to a wedge plate formed between the outer plate and the output shaft. Between a pair of cylindrical rollers for controlling the interruption of the rotational torque from the shaft and the transmission of the rotational torque from the lever side clutch, and between the pair of cylindrical rollers, and energizing the separating force between the cylindrical rollers The main part is composed of a leaf spring. Note that the inner ring of the lever side clutch part has a function of transmitting rotational torque from the lever side clutch part to the brake side clutch part, and a pair of cylindrical rollers arranged between the outer ring and the output shaft in the circumferential direction, etc. And a function of holding at intervals.

  In the lever side clutch, when rotational torque is input to the outer ring by lever operation, the cylindrical roller engages with the wedge clearance between the outer ring and the inner ring, and the rotational torque is transmitted to the inner ring through the cylindrical roller. The inner ring rotates. At this time, elastic force is accumulated in both centering springs as the outer ring and the cage rotate. When the rotational torque is no longer input, the cage and the outer ring return to the neutral state by the elastic force of both centering springs, while the inner ring maintains the given rotational position. Therefore, the inner ring rotates in a jog by repeating the rotation of the outer ring, that is, by the pumping operation of the operation lever.

  In the brake-side clutch, when rotational torque is reversely input to the output shaft by seating on the seat, the cylindrical roller engages with the wedge clearance between the output shaft and the outer ring, and the output shaft locks against the outer ring. Is done. In this manner, the rotational torque reversely input from the output shaft is locked by the brake side clutch portion and the return to the lever side clutch portion is blocked. Thereby, the seat seat cannot be adjusted up and down.

  On the other hand, when rotational torque is input from the lever side clutch portion to the inner ring, the inner ring rotates and abuts against the cylindrical roller and presses against the elastic force of the leaf spring, thereby causing the cylindrical roller to rotate with the outer ring and the output shaft. The locked state is released by releasing from the wedge clearance therebetween, and the output shaft can be rotated. As the inner ring further rotates, rotational torque from the inner ring is transmitted to the output shaft, and the output shaft rotates. In other words, when the inner ring is joggingly rotated, the output shaft is also joggingly rotated. The seat seat can be adjusted up and down by the jogging rotation of the output shaft.

JP 2009-210119A

  By the way, in the brake side clutch part of the clutch unit disclosed by patent document 1, the stationary member with which rotation was restrained is comprised by integrating a side plate, an outer ring | wheel, and a cover. These side plates, outer ring and cover are made of metal members, and the side plate and outer ring, and the outer ring and cover are assembled in direct contact with each other.

  On the other hand, when the clutch unit is incorporated in the automobile seat lifter, the side plate of the brake side clutch is attached to the seat frame of the seat lifter. The side plate is fixed to a thin metal sheet frame by caulking or bolt fastening.

  In the brake side clutch portion of the clutch unit, the lever operation at the lever side clutch portion releases the cylindrical roller from the wedge clearance between the outer ring and the output shaft, thereby releasing the locked state of the output shaft. When the locked state of the output shaft is released, vibration and noise may occur due to the cylindrical roller being detached from the wedge clearance.

  When such vibrations and abnormal noise occur, the metal outer ring, side plate and seat frame are assembled in direct contact with each other, so the aforementioned vibration and abnormal noise are transmitted to the seat frame via the outer ring and side plate. Easy to propagate. The seat frame has a thin plate shape, and vibrations and abnormal noise are amplified by the seat frame, resulting in a deterioration in operation feeling.

  Therefore, the present invention has been proposed in view of the above-described problems, and an object of the present invention is to provide a clutch unit that can suppress vibration and abnormal noise generated in the brake-side clutch during lever operation. .

  The clutch unit according to the present invention is provided on the input side, and is provided on the output side with a lever side clutch portion that controls transmission and interruption of the rotational torque input by lever operation, and the rotational torque from the lever side clutch portion. A basic configuration including a brake-side clutch portion that transmits to the output side and blocks rotational torque that is reversely input from the output side is provided.

  As a technical means for achieving the above-mentioned object, the brake side clutch portion of the present invention includes a side plate, an outer ring and a cover which constitute a stationary member whose rotation is restricted, and between the side plate and the outer ring, and with the outer ring. An anti-vibration material is interposed at least between the cover and the cover.

  In the present invention, the vibration generated when the brake-side clutch part is released from the locked state by lever operation by interposing an anti-vibration material between at least one of the side plate and the outer ring and between the outer ring and the cover. And noise can be suppressed. By suppressing the vibration and abnormal noise, the operational feeling can be improved.

  The vibration isolator in the present invention preferably has a thin plate structure. In this way, if a thin plate-shaped vibration isolator is interposed between the side plate and the outer ring and at least one of the outer ring and the cover, a compact clutch unit capable of exhibiting anti-vibration performance can be easily realized. can do.

  The vibration isolator in the present invention preferably has a structure made of rubber or resin. Thus, if a rubber or resin vibration-proof material is interposed between at least one of the side plate and the outer ring and between the outer ring and the cover, a clutch unit that can exhibit good vibration-proof performance can be easily obtained. Can be realized.

  The clutch unit according to the present invention is suitable for automobile use by incorporating the lever side clutch part and the brake side clutch part into the automobile seat lifter part.

  According to the present invention, a vibration isolator is interposed between at least one of the side plate and the outer ring and between the outer ring and the cover. Vibration and noise can be suppressed. By suppressing the vibration and abnormal noise, the operational feeling can be improved. As a result, it is possible to provide a clutch unit that can realize a comfortable lever operation for the user.

In embodiment of this invention, it is sectional drawing which shows the whole structure of a clutch unit. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is a principal part expanded sectional view which shows the brake side clutch part of FIG. It is sectional drawing which shows the whole structure of a clutch unit in other embodiment of this invention. FIG. 6 is an enlarged cross-sectional view of a main part showing a brake side clutch part of FIG. 5. It is a perspective view which shows the seat seat of a motor vehicle. It is a conceptual diagram which shows one structural example of a sheet lifter part. It is a principal part enlarged view of FIG.

  An embodiment of a clutch unit according to the present invention will be described in detail with reference to the drawings. 1 is a cross-sectional view showing the overall configuration of the clutch unit of this embodiment, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB in FIG. Before describing the characteristic configuration of this embodiment, the overall configuration of the clutch unit will be described.

  As shown in FIG. 1, the clutch unit 10 of this embodiment has a structure in which a lever-side clutch portion 11 provided on the input side and a brake-side clutch portion 12 provided on the output side are unitized. . The lever side clutch part 11 controls transmission and interruption of rotational torque input by lever operation. The brake-side clutch unit 12 has a reverse input blocking function for transmitting the rotational torque from the lever-side clutch unit 11 to the output side and blocking the rotational torque that is reversely input from the output side.

  As shown in FIGS. 1 and 2, the lever side clutch unit 11 receives the side plate 13 and the outer ring 14 as input members to which rotational torque is input by lever operation, and the rotational torque input from the outer ring 14. An inner ring 15 as a connecting member that transmits to the portion 12, a plurality of cylindrical rollers 16 that control transmission and interruption of rotational torque from the outer ring 14 by engagement and disengagement between the outer ring 14 and the inner ring 15, and a plurality of cylindrical rollers 16 A cage 17 for holding the cylindrical rollers 16 at equal intervals in the circumferential direction, an inner centering spring 18 for returning the cage 17 to a neutral state, and an outer centering spring 19 for returning the outer ring 14 to a neutral state. It has.

  In the lever side clutch portion 11, the claw portion 13 a formed on the outer peripheral edge portion of the side plate 13 is inserted into the notched recess portion 14 a formed on the outer peripheral edge portion of the outer ring 14, and the side plate 13 is tightened. 14 and is integrated as an input member of the lever side clutch portion 11. On the inner periphery of the outer ring 14, a plurality of cam surfaces 14b are formed at equal intervals in the circumferential direction. The input of the rotational torque to the outer ring 14 is performed by an operation lever that is swingable in the vertical direction and is attached to the side plate 13 by screwing or the like.

  The inner ring 15 includes a cylindrical portion 15a through which the output shaft 22 is inserted, a diameter-enlarged portion 15b in which a brake side end portion of the cylindrical portion 15a extends radially outward, and an outer peripheral end of the diameter-enlarged portion 15b. It consists of a plurality of pillars 15c (see FIG. 3) protruding by bending the part in the axial direction. A wedge clearance 20 is formed between a cylindrical surface 15d formed on the outer periphery of the cylindrical portion 15a of the inner ring 15 and a cam surface 14b formed on the inner periphery of the outer ring 14, and the above-described cylindrical roller is formed in the wedge clearance 20. 16 are arranged at equal intervals in the circumferential direction by a cage 17.

  The inner centering spring 18 is a C-shaped elastic member having a circular cross section disposed between the retainer 17 and a cover 24 that is a stationary member of the brake side clutch portion 12. Both ends of the inner centering spring 18 are disposed on the retainer 17 and the cover 24. It is locked to a part of. The inner centering spring 18 is elastically expanded by the rotation of the cage 17 following the outer ring 14 with respect to the cover 24 in a stationary state when the rotational torque input from the outer ring 14 is applied by lever operation. When the rotational torque input from the outer ring 14 is released, the cage 17 is returned to the neutral state by the elastic force.

  The outer centering spring 19 positioned on the radially outer side of the inner centering spring 18 is a C-shaped strip elastic member disposed between the outer ring 14 and the above-described cover 24, and both ends thereof are arranged on the outer ring 14 and the cover 24. It is locked to a part of. The outer centering spring 19 is expanded with the rotation of the outer ring 14 with respect to the cover 24 in a stationary state when the rotational torque input from the outer ring 14 by lever operation is applied, and an elastic force is accumulated. When the rotational torque input from 14 is released, the outer ring 14 is returned to the neutral state by its elastic force.

  The cage 17 is a resin-made cylindrical member in which a plurality of pockets 17a for accommodating the cylindrical rollers 16 are formed at equal intervals in the circumferential direction. Note that both end portions of the inner centering spring 18 are locked to one axial end portion of the cage 17, that is, the axial end portion on the cover 24 side of the brake side clutch portion 12. The cage 17 is disposed between the outer ring 14 and the inner ring 15 in the radial direction, and is sandwiched between the outer ring 14 and the cover 24 of the brake side clutch portion 12 in the axial direction.

  As shown in FIGS. 1 and 3, the brake side clutch portion 12 having a reverse input blocking function of a type called a lock type has an inner ring 15 as a connecting member to which rotational torque from the lever side clutch portion 11 is input. An output shaft 22 as an output member from which the rotational torque from the lever side clutch portion 11 is output, an outer ring 23, a cover 24 and a side plate 25 as stationary members whose rotation is restricted, an outer ring 23 and an output shaft 22. A plurality of pairs of cylindrical rollers 27 for controlling the interruption of the rotational torque reversely input from the output shaft 22 and the transmission of the rotational torque input from the inner ring 15 by engagement and disengagement between them, and each pair of cylindrical rollers The main part is composed of a leaf spring 28 having an N-shaped cross section that urges a separation force in a circumferential direction between the members 27.

  The output shaft 22 is integrally formed with a large-diameter portion 22b that extends radially outward and expands in the axially central portion of the shaft portion 22a into which the tubular portion 15a of the inner ring 15 is extrapolated. An annular recess 22c is formed on the end surface of the large diameter portion 22b facing the side plate 25, and a friction ring 39 is press-fitted into the annular recess 22c with a margin. A pinion gear 22d for connecting to the seat lifter portion 41 (see FIGS. 7 to 9) is coaxially formed at the output side end portion of the shaft portion 22a. Further, the washer 31 is press-fitted into the input side end portion of the shaft portion 22a via the wave washer 30 to prevent the component parts of the lever side clutch portion 11 from coming off.

  A plurality (for example, six) of flat cam surfaces 22e are formed on the outer periphery of the large-diameter portion 22b of the output shaft 22 at equal intervals in the circumferential direction. Two wedge-shaped gaps 26 provided between the cam surface 22e of the large diameter portion 22b and the inner peripheral surface 23a of the outer ring 23 are provided with two cylindrical rollers 27 and one leaf spring 28 interposed between the cylindrical rollers 27. Are arranged. The cylindrical rollers 27 and the leaf springs 28 are arranged at equal intervals in the circumferential direction by column portions 15 c of the inner ring 15 having a function of transmitting the rotational torque input from the outer ring 14 to the output shaft 22. That is, the column portion 15c of the inner ring 15 functions as a cage by accommodating the cylindrical roller 27 and the leaf spring 28 in the pocket 15f and holding them at equal intervals in the circumferential direction. The large diameter portion 22 b of the output shaft 22 is provided with a protrusion 22 f for transmitting the rotational torque from the inner ring 15 to the output shaft 22. The protrusion 22f is inserted into the hole 15e formed in the enlarged diameter portion 15b of the inner ring 15 with a clearance.

  The outer ring 23, the cover 24, and the side plate 25 are divided into a notch recess 23 b formed in the outer peripheral edge of the thick plate-like outer ring 23 and a notch recess 24 a formed in the outer peripheral edge of the cover 24. The side plate 25 is fixed to the outer ring 23 and the cover 24 and is integrated as a stationary member of the brake side clutch portion 12 by inserting and crimping the claw portion 25a formed on the outer peripheral edge of the brake.

  The friction ring 39 as a braking member is a member formed of a resin material in a ring shape by injection molding or the like, and is fixed to the side plate 25. The friction ring 39 is press-fitted to the inner peripheral surface 22g of the annular recess 22c formed in the large diameter portion 22b of the output shaft 22 with a tightening margin. The friction force generated between the outer peripheral surface 39b of the friction ring 39 and the inner peripheral surface 22g of the annular recess 22c of the output shaft 22 gives rotational resistance to the output shaft 22 during lever operation.

  In the lever side clutch portion 11 having the above-described configuration, when rotational torque is input to the outer ring 14 by lever operation, the cylindrical roller 16 engages with the wedge clearance 20 between the outer ring 14 and the inner ring 15, and the cylindrical roller 16. Rotational torque is transmitted to the inner ring 15 through the inner ring 15 and the inner ring 15 rotates. At this time, elastic force is accumulated in the centering springs 18 and 19 as the outer ring 14 and the cage 17 rotate. When the rotational torque is no longer input, the retainer 17 and the outer ring 14 are returned to the neutral state by the elastic force of the centering springs 18 and 19, while the inner ring 15 maintains the given rotational position. Therefore, the inner ring 15 rotates in a jog by repeating the rotation of the outer ring 14, that is, by the pumping operation of the operation lever.

  In the brake-side clutch portion 12 having the above-described configuration, the cylindrical roller 27 is engaged with the wedge clearance 26 between the output shaft 22 and the outer ring 23 even when the rotational torque is reversely input to the output shaft 22 due to the seating on the seat. Accordingly, the output shaft 22 is locked with respect to the outer ring 23. In this way, the rotational torque reversely input from the output shaft 22 is locked by the brake side clutch portion 12 and the return of the reverse input torque to the lever side clutch portion 11 is interrupted. Thereby, the seat seat cannot be adjusted up and down.

  On the other hand, when the rotational torque from the lever side clutch portion 11 is input to the inner ring 15, the inner ring 15 contacts the cylindrical roller 27 and presses the cylindrical roller 27 against the elastic force of the leaf spring 28. Thereby, the cylindrical roller 27 is detached from the wedge clearance 26, the locked state of the output shaft 22 is released, and the output shaft 22 can be rotated. When the inner ring 15 further rotates, the clearance between the hole 15e of the enlarged diameter portion 15b of the inner ring 15 and the projection 22f of the large diameter portion 22b of the output shaft 22 is clogged, and the enlarged diameter portion 15b of the inner ring 15 becomes the projection 22f of the output shaft 22. Contact in the rotational direction. Thereby, the rotational torque from the lever side clutch part 11 is transmitted to the output shaft 22 via the protrusion 22f, and the output shaft 22 rotates. That is, when the inner ring 15 is jogged and rotated, the output shaft 22 is also jogged and rotated. Thereby, the vertical adjustment of the seat is possible.

  The overall configuration of the clutch unit 10 in this embodiment is as described above, and the characteristic configuration will be described in detail below.

  The clutch unit 10 is incorporated in an automotive seat lifter 41 (see FIGS. 7 to 9) described later. When the clutch unit 10 is incorporated in the seat lifter portion 41, the side plate 25 of the brake side clutch portion 12 is attached to the seat frame 41i (see FIG. 4) of the seat lifter portion 41. The side plate 25 is fixed to a thin metal sheet frame 41i by caulking or bolt fastening.

  The brake side clutch portion 12 in the clutch unit 10 of the embodiment shown in FIG. 1 has a structure in which a thin plate-like vibration isolating material 21 made of rubber or resin is interposed between a side plate 25 and an outer ring 23. The vibration isolator 21 is integrated with the side plate 25, the outer ring 23, and the cover 24 by inserting and tightening the claw portion 25 a of the side plate 25 into a notch recess 21 a formed in the outer peripheral edge portion thereof. Although the vibration isolator 21 has substantially the same shape as the outer ring 23, as shown in FIG. 4, a non-contact state with the cylindrical roller 27 can be ensured by having an inner diameter D 2 larger than the inner diameter D 1 of the outer ring 23. I am doing so. In addition, since the vibration isolating material 21 is interposed, the axial length of the cam surface 23a of the output shaft 23 is increased and the cylindrical roller 27 is increased, so that the torque capacity of the brake side clutch 12 can be increased. .

  In the brake side clutch portion 12, the cylindrical roller 27 is separated from the wedge clearance 26 between the outer ring 23 and the output shaft 22 by the lever operation in the lever side clutch portion 11, and the locked state of the output shaft 22 is released. At this time, vibration and noise may occur due to the cylindrical roller 27 being detached from the wedge clearance 26.

  In this embodiment, the vibration isolator 21 is interposed between the side plate 25 and the outer ring 23 without the side plate 25 and the outer ring 23 being in direct contact with each other. 23 and the side plate 25 are difficult to propagate to the seat frame 41i (see FIG. 4). Therefore, even if the seat frame 41i is a thin plate, it is possible to suppress vibrations and abnormal noises from being amplified by the seat frame 41i, so that the operation feeling can be improved. As a result, it is possible to realize a lever operation that is comfortable for the passenger.

  Since the vibration-proof material 21 described above has a thin plate shape, the compact clutch unit 10 capable of exhibiting the vibration-proof performance can be easily realized by being interposed between the side plate 25 and the outer ring 23. it can. Further, since the vibration isolator 21 has a structure made of rubber or resin, it exhibits good vibration isolating performance.

  In this embodiment, the case where the vibration isolator 21 is interposed between the side plate 25 and the outer ring 23 has been described. However, the present invention is not limited to this, and as shown in FIG. 5 and FIG. Alternatively, a thin vibration-proof material 21 made of resin may be interposed between the outer ring 23 and the cover 24. 5 and FIG. 6, the same parts as those in FIG. 1 and FIG.

  As in the embodiment of FIGS. 1 and 4, the anti-vibration material 21 is formed by inserting the claw portions 25 a of the side plate 25 into the notch recesses 21 a formed on the outer peripheral edge thereof and caulking the side plate 25, the outer ring 23. And the cover 24 are integrated. Further, the vibration isolator 21 has substantially the same shape as the outer ring 23, but has an inner diameter D2 larger than the inner diameter D1 of the outer ring 23 as shown in FIG. We are trying to secure it.

  In this embodiment, the side plate 25 and the outer ring 23 are in direct contact with each other, but the vibration isolator 21 is interposed between the outer ring 23 and the cover 24. From this, the lever operation at the lever side clutch portion 11 causes the cylindrical roller 27 to disengage from the wedge clearance 26 between the outer ring 23 and the output shaft 22 and to generate vibrations and abnormalities that occur when the output shaft 22 is unlocked. Sound, that is, vibration and abnormal noise generated in the brake side clutch portion 12 can be suppressed by the vibration isolator 21.

  Therefore, it is possible to reduce vibrations and abnormal noise transmitted to the seat frame 41 i via the outer ring 23 and the side plate 25. Even if the seat frame 41i is a thin plate, it is possible to suppress vibrations and abnormal noises from being amplified by the seat frame 41i. As a result, it is possible to realize a lever operation that is comfortable for the passenger.

  In the embodiment shown in FIGS. 1 and 4, the vibration isolator 21 is interposed between the side plate 25 and the outer ring 23, and in the embodiment shown in FIGS. 5 and 6, the outer ring 23 and the cover 24 are interposed. Although the case where the vibration isolator 21 is interposed has been described, the vibration isolator 21 may be interposed both between the side plate 25 and the outer ring 23 and between the outer ring 23 and the cover 24.

  Finally, an application example of the clutch unit of this embodiment will be described. The clutch unit 10 having the structure described in detail above is used by being incorporated in an automobile seat lifter 41 that adjusts the height of the seat 40 by lever operation. FIG. 7 shows a seat seat 40 installed in a passenger compartment of an automobile. The seat 40 includes a seat 40a and a backrest 40b, and includes a seat lifter 41 that adjusts the height H of the seat 40a. The height H of the seating seat 40a is adjusted by the operation lever 42 of the seat lifter 41. For example, when the seat surface of the seat 40 is lowered, the brake-side clutch portion 12 (see FIG. 1) is operated by lever operation at the lever-side clutch portion 11 (see FIG. 1), that is, an operation of swinging the operation lever 42 downward. 1) is released, and an appropriate rotational resistance is applied to the output shaft 22 (see FIG. 1) at that time, so that the seat surface of the seat 40 can be lowered smoothly without any discomfort to the passenger. ing.

  FIG. 8 conceptually shows one structural example of the sheet lifter unit 41. One end of each of the link members 41c and 41d is pivotally attached to the slide movable member 41g of the seat slide adjuster 41b. The other ends of the link members 41c and 41d are pivotally attached to the seating seat 40a. The other end of the link member 41c is pivotally attached to the sector gear 41f via the link member 41e. The sector gear 41f is pivotally attached to the seating seat 40a and can swing around a fulcrum 41h (see FIG. 9). The other end of the link member 41d is pivotally attached to the seating seat 40a.

  In FIG. 9, when the operation lever 42 is swung upward, the input torque in that direction is transmitted to the pinion gear 22d via the clutch unit 10, and the pinion gear 22d rotates counterclockwise. Then, the sector gear 41f that meshes with the pinion gear 22d swings in the clockwise direction, and pulls the other end of the link member 41c through the link member 41e. As a result, both the link member 41c and the link member 41d stand up, and the seating surface of the seating seat 40a is raised.

  In this way, after adjusting the height H of the seating seat 40a, when the operation lever 42 is released, the operation lever 42 is rotated downward by the elastic force of the centering springs 18 and 19 to return to the original position (neutral). Return to the state. When the operation lever 42 is swung downward, the seating surface of the seating seat 40a is lowered by the reverse operation to the above. Further, when the operation lever 42 is released after the height adjustment, the operation lever 42 rotates upward and returns to the original position (neutral state).

  The present invention is not limited to the above-described embodiments, and can of course be implemented in various forms without departing from the gist of the present invention. It includes the equivalent meanings recited in the claims and the equivalents recited in the claims, and all modifications within the scope.

DESCRIPTION OF SYMBOLS 11 Lever side clutch part 12 Brake side clutch part 21 Anti-vibration material 23 Outer ring 24 Cover 25 Side plate 41 Seat lifter part

Claims (4)

Provided on the input side, a lever side clutch part that controls transmission and interruption of rotational torque input by lever operation, and provided on the output side, and transmits the rotational torque from the lever side clutch part to the output side, It consists of a brake side clutch part that cuts off rotational torque that is reversely input from the output side,
The brake side clutch unit includes a side plate, an outer ring, and a cover that constitute a stationary member whose rotation is restricted, and is provided with vibration isolation between at least one of the side plate and the outer ring and between the outer ring and the cover. A clutch unit characterized by interposing a material.   The clutch unit according to claim 1, wherein the vibration isolator has a thin plate shape.   The clutch unit according to claim 1 or 2, wherein the vibration isolator is made of rubber or resin.   The clutch unit as described in any one of Claims 1-3 in which the said lever side clutch part and the said brake side clutch part are integrated in the seat lifter part for motor vehicles.

Images