JPH01145427A - Clutch for vehicle - Google Patents

Abstract

PURPOSE:To surely engage and disengage a clutch by providing a clutch piece coaxially with a clutch center and an adjust holder integrally coaxially with the clutch center in a clutch fixed part and mounting an adjust drum to be fitted into the adjust holder. CONSTITUTION:By controlling a control rod 24, unless a moving part 83 of a clutch cam 81 moves toward a clutch piece 20 along the axial direction of a clutch output shaft 4, a communication hole 94 is opened, placing the first chamber 92 and the second chamber 93 in a communication condition, and freely pressing a pressure plug 96 to the second chamber 92 by the clutch piece 20, no clutch disengaging force acts at all on a pressure plate. While the clutch disengaging force acts on the pressure plate only when the moving part 83 moves to the clutch piece 20 by controlling the control rod 24. Accordingly, because no influence is received by a change of thickness of a clutch disk 13 and a friction plate 14, a clutch is surely actuated corresponding to controlling the clutch control rod 24.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a friction clutch for a vehicle that connects and disconnects a clutch by operating a clutch operating member such as a change lever, and particularly relates to a friction clutch for a vehicle that connects and disconnects a clutch by operating a clutch operating member such as a change lever. The present invention relates to a friction clutch for a vehicle that connects and disconnects the clutch by transmitting the movement of a cam plate driven by an operation to a pressure plate of the clutch via a sealed hydraulic mechanism.

Support JLfL Ni conventional multi-plate f? The clutch illustrated in FIG. 1 has been known as a friction clutch.

In the clutch shown in FIG. 1, an input gear 1 is meshed with a drive gear O that is integrated with the output shaft of a prime mover (not shown), and this input gear 1 is freely rotatable to a clutch output l1III4 via a boss 2 and a bearing 3. The clutch output shaft 4 is rotatably supported by a casing 6 via a ball bearing 5.

Further, a friction clutch 10 that transmits the power of the input gear 1 to the clutch output shaft 4 in a freely connecting/disconnecting manner is connected to a clutch outer 11 connected to the input gear 1 and spline-fitted to the clutch output shaft 4, and is integrally connected by a nut 17. a coupled clutch center 12; clutch disks 13 and friction plates 14 that are alternately arranged inside the clutch outer 11 and outside the clutch center 12 and spline-coupled to the clutch outer 11 and the clutch center 12, respectively; Clutch center 1 with clutch disc 13 and friction plate 14 in between
2, and a pressure plate 16 disposed on the opposite side of the pressure receiving part 15, and is configured such that the clutch is brought into a connected state by a thrust generated toward the pressure receiving part 15 from a thrust generating mechanism 40, which will be described later. .

A starting clutch 4 is disposed within a roughly bottomed cylindrical clutch outer 11.
0 is provided, and is configured to be in a connected state when the input gear 1 exceeds a predetermined rotational speed.

Furthermore, the thrust generating mechanism 40 includes the starting clutch 30
The starting clutch outer 34 and the pressure plate 16 of the friction clutch 10 are interposed, and the starting clutch 30
Starting clutch outer 34 and I! The rotational movement of the friction clutch 10 relative to the pressure plate 16 generates a thrust that connects the friction clutch 10.

10. The detailed structures of the starting clutch 30 and the thrust generating mechanism 40 will be explained.

First, in the friction clutch 10, the clutch outer 11
A plurality of protrusions 11a are provided circumferentially on the cylindrical bottom (left side in FIG. 1) of the input gear 1.
An elongated hole 1a is formed in the circumferential direction so that the input gear 1 and the Claracia 1 can be loosely fitted and rotated in the circumferential direction relative to each other.
A damper spring 7 is interposed between the clutch outer 11 and the inner surface (left side in FIG. 1) of the clutch outer 11 and the inner surface of the input gear 1 (left side in FIG. 1). The plate 31 and the clutch outer 11 are attached to the input gear 1 by a pin that passes through the protrusion 11a of the clutch outer 11 and the cover plate 8 and is caulked. The plate 31 and the clutch outer 11 are driven to rotate while buffering torque fluctuations.

I'i again! The pressure plate 16 in the friction clutch 10 is rotatably attached to the boss portion 12a of the clutch center 12 via a ball bearing 18 in the circumferential direction.
It is fitted so as to be slidable in the h direction.

Furthermore, a clutch piece 20 is fitted to the boss portion 12a of the clutch center 12 via a ball bearing 19 so as to be rotatable in the circumferential direction and slidable in the axial direction, and the clutch piece 20 is fitted on the outside (on the right side in FIG. 1) of the clutch piece 20. A return spring 22 is interposed between the movable portion 21a of the clutch cam 21 and the clutch piece 20, a clutch lever 23 is connected to the movable portion 21a of the clutch cam 21, and an operating rod 24 is connected to the clutch lever 23. A lift turbine 25 is fitted into the boss portion 12a of the clutch center 12, and both ends of the lift turbine 25 are connected to a clutch off plate 26 which is in contact with the outer surface of the ball bearing 18 and an inner surface of the ball bearing 19. The moving part 21a of the clutch cam 21 is engaged with the stepped part of the operating sleeve 28, and when the engine rotates above a predetermined rotational speed and the starting clutch 30 is connected, the operating rod 2
When the clutch lever 23 is swung by the rotation of 4,
The clutch cam 21 is operated and the return spring 22
is compressed, the inner surface of the operating sleeve 28 comes into contact with the clutch piece 20, and as the operating sleeve 28 moves inward, the clutch piece 20 is pushed inward, causing the ball bearing 19. Lift turbine 25. The pressure plate 16 is slid inward via the clutch off plate 2G and the ball bearing 18, and the clutch connection of the friction clutch 10 is released.

Zaranimata crud center 12 and pressure plate 1
A coil-shaped return spring 27 is interposed between the clutch disc 6 and the clutch disc 13, and the spring force of the return spring 21 biases the pressure plate 1G in a direction away from the clutch disc 13.

Next, the starting clutch 30 will be explained. In the starting clutch 30, the plate 3 integrated with the clutch outer 11
1, a clutch shoe 33 is swingably supported by pins 32 arranged at equal intervals in the circumferential direction, and a plate 3
A shoe return spring (not shown) is tensioned between the clutch shoe 1 and the clutch shoe 33.

A starting clutch outer 34, which is a member on the output side of the starting clutch 30, is formed into a bottomed cylindrical shape, and the inner surface of the circumferential wall thereof is a contact surface with the clutch shoe 33.

Therefore, the clutch outer 11 and the starting clutch outer 34
A one-way clutch 35 is interposed between the two, and when the input gear V1 and clutch gear 1 actuator 11 rotate at a higher speed than the starting clutch outer 34, the one-way clutch 35 is disconnected, and the input gear 1 and clutch When the outer 11 rotates at a lower speed than the starting clutch outer 34, the one-way clutch 35 is configured to be in the connected state.

Finally, the thrust generating mechanism 40 will be explained.

A cam plate 41 of the thrust generation mechanism 40 is connected to the starting clutch outer 34 of the starting clutch 30 by a pin 42 so that it can move relative to the starting clutch 30 in the axial direction but cannot rotate relative to the circumferential direction. A clutch spring 43 in the shape of a disc spring is interposed between the plate 41 and the outer surface of the cam plate 41 (right side in FIG. 1) and the inner surface of the cam plate 44 facing the same at a predetermined interval in the circumferential direction. A plurality of cam recesses 45 and 46 are formed in each of the four cam parts 45 and 46, and a thrust ball 47 is interposed in each of the four cam parts 45 and 46.

The cam recesses 45 and 46 are deepest at the center,
The cam recesses 45 and 46 are formed to gradually decrease from the center toward both circumferential ends of the cam recesses 45 and 46.

Since the conventional vehicle clutch shown in FIG. 1 is constructed as described above, when the input gear 1 is stopped,
Centrifugal force is applied to the clutch shoe 33 of the starting clutch 30.
1JI, the clutch shoe 33 separates from the inner peripheral surface of the starting clutch outer 34 due to the spring force of a return spring (not shown), the starting clutch 30 becomes disconnected, and the spring force of the return spring 22 causes the clutch piece 20 to close to the inner nut. 17, this movement is transmitted to the pressure plate 16 via the lifter pin 25, and the clutch disc 13. The friction plate 14 is connected to the pressure receiving part 15. The friction clutch 10 is also in a connected state without being pressed against the pressure plate 16. In this case, the thrust ball 47 of the thrust generating mechanism 40 has fallen into the deep center of the cam recess 45,46.

In this way, the starting clutch 30. When the input gear 1 is rotationally driven by an engine (not shown) in a state where both friction clutches 10 are disconnected, the plate 31 of the starting clutch 30 and the clutch outer 11 of the friction clutch 10 rotate in the same direction. Until input gear 1 and plate 31 exceed a predetermined rotation speed, starting clutch 30. l! Both JV clutches 10 remain in the disconnected state.

However, when the input gear 1 and the plate 31 rotate beyond a predetermined number of rotations, the clutch shoe 33 overcomes the spring force of a return spring (not shown) due to the centrifugal force and swings outward, causing the inner part of the starting clutch outer 34 to rotate. When pressed against the circumferential surface, the starting clutch 30 becomes connected, the starting clutch outer 34 and the cam plate 41 begin to rotate, and the cam recess 45 of the rotating cam plate 41 and the cam recess 46 of the stopped pressure plate 1G are connected. On the other hand, the thrust ball 47 moves relative to the circumferential direction of the four cam parts 45.46 from the valley of the cam recess 45.4G, rolls on one inclined surface of the four cam parts 45.46, and rolls on one inclined surface of the four cam parts 45.46. The plate 16 is pushed towards the pressure receiving part 15 and the clutch disc 13 of the friction clutch 10. Friction plate 1
A pressure force is applied to 4 and a frictional force is generated, and l? !
Since the friction clutch 10 is engaged, the rotational torque applied to the input gear 1 is transmitted to the clutch output @4.

Then start clutch 30. With the friction clutch 10 connected, when the operating rod 24 is rotated and the clutch lever 23 is swung, the clutch cam 21 operates and the return spring 22 is compressed inward (leftward in Figure 1). and the operating sleeve 2 engaged with the clutch cam 21
8 is pressed against the clutch piece 20, and the pressing force is applied to the lid pin 25. Ball bearing 18. The pressure is transmitted to the brake brake plate 1G via the clutch off plate 26, and the pressure brake 1-16 is pushed inward by overcoming the outward thrust by the thrust generating mechanism 40 and the spring force of the clutch spring 43. The mutual pressure contact between the clutch disk 13 and the friction plate 14 is released, and the friction clutch 10 is brought into a disconnected state.

, my mouth is about to open. In the conventional vehicle clutch shown in FIG.
．． Friction plate 14. If the friction surfaces of the pressure receiving part 15 and the breather plate 16 are worn, the input gear 1
rotates above a predetermined number of rotations, the starting clutch 30 is connected, the thrust generating mechanism 40 is operated, and the cam plate 44 and pressure plate 1G are pushed outward.
? ! When trying to engage the scraper clutch 10, the cam plate 44. Ball bearing 18. lift turbine 25
．． Due to the outward movement of the ball bearing 19, the clutch piece 20 collides with the tip of the operating sleeve 28, and the cam plate 44. Ball bearing 18. Clutch off plate 26. The lift turbine 25z, the ball bearing 19, and the clutch piece 20 are prevented from moving outward, and the pressure receiving part 15. Clutch disc 13 by pressure plate 16. The mutual pressure of the friction plates 14 may become insufficient, and the friction clutch 10 may not be reliably connected.

Also clutch disc 13. Friction plate 14
When replacing the new clutch disc 13° friction plate 14 compared to Moe's clutch disc 13° friction plate 14.
．． When the friction plate 14 is thick, the input gear 1 rotates above a predetermined number of rotations, and the thrust generating mechanism 40 operates due to the engagement of the starting clutch 30. to rotate the clutch cam 21, and the operation sleeve 2
By moving 8 to the left, the taratch bead 20. Ball bearing 19° lift turbine 25. Clutch off brake 1'26. Ball bearing 18. When the pressure plate 16 is pushed to the left, the pressure plate 16
The amount of inward movement of the clutch disc 13. The amount of movement is smaller than the amount required to separate the friction plates 14 from each other, and the friction clutch 10 may remain in a half-clutch state or a connected state and not be in a disconnected state.

In order to overcome this difficulty, in the clutch shown in FIG. The portion 52 is in contact with the inner surface of the clutch cover 55 and the proximal threaded portion 53 of the adjusting screw 50.
penetrates the clutch cover 55 and protrudes outside the clutch cover 55, and a lock nut 54 is attached to this base f threaded portion 53.
are screwed together, and after loosening the lock nut 54 and screwing the adjustment screw 50 in the clockwise or counterclockwise direction, by tightening the lock nut 54,
The clutch cam 21 consisting of the moving part 21a, the fixed part 21b and the ball 21c is slightly moved outward (to the right in the drawing) or inward so that the positions of the pressure brakes 1 to 16 with respect to the pressure receiving part 15 can be adjusted appropriately. It had become.

However, in the clutch shown in FIG. 1, the clutch disc 13. The amount of movement of the adjusting screw 50 must be adjusted appropriately in response to changes in the thickness of the friction plate 14.

, 1- to ``1'' and: The present invention relates to an improvement of a vehicle clutch that eliminates such problems,
A clutch disc installed on the clutch outer and a friction play installed in the clutch center! - the clutch discs and friction plates are pressed and held by the clutch center and a pressure plate biased toward the clutch center, resulting in a clutch connected state, and the pressure plate is moved to the opposite side. In a vehicle clutch in which the clutch is in an 8% clutch state, a clutch piece is rotatably provided at one end coaxially with the clutch center, and a clutch cam fixing part fixed to the clutch center with a predetermined spacing therebetween. , an adjuster 17 holder is integrally provided facing the clutch center and coaxially therewith, and an adjuster drum that moves along the axial direction of the clutch center by movement of the clutch cam moving part is fitted in the adjuster holder, The space inside the adjuster drum is
The clutch center is partitioned into two chambers along the axial direction by a partition wall provided with a communication hole, and a first chamber near the clutch cam fixing section has a chamber that passes through the communication hole and is located on the opposite side of the clutch cam fixing section. A stopper pin attached to the clutch cam fixing portion or the adjuster holder so as to protrude freely into the second chamber, and a variable volume in which the volume of the sealed space communicating with the communication hole can absorb fluctuations in the volume inside the second chamber. A pressure plug that can come into contact with the clutch piece is movably installed at the open end of the second chamber 114 near the clutch bead, and the second chamber is provided with a means for sealing the communication hole of the partition wall. The invention is characterized in that it is provided with a sealing means.

Since the present invention is configured as described above, when the clutch operating member is set to non-operation, the clutch cam moving portion and the adjuster drum are located on the side of the clutch cam fixing portion, and the tip of the stopper pin protrudes into the first chamber of the adjuster drum, and the sealing means, which is locked to the tip of the protruding stopper pin, is separated from the communication hole of the partition wall, opening the communication hole, and as a result,
When the clutch piece is moved to the clutch cam fixing part due to the movement of the pressure plate to the clutch center and comes into contact with the pressure plug, and a force is applied to push the pressure plug into the adjuster drum. Then, the pressure plug can enter the second chamber of the adjuster drum and be set to the clutch engagement state.

Further, in the present invention, when the clutch is connected, a3
When the clutch operating member is operated to disengage the clutch, the clutch cam moving part and the adjuster drum move from the clutch cam fixed part side toward the clutch piece, and the partition wall inside the adjuster drum also moves toward the clutch piece. The stopper pin moves relatively into the communication hole, and the communication hole is closed by the sealing means, so that the pressure plug is integrally fixed to the adjuster drum. The movement of the radge cam moving portion and the adjuster drum to the clutch piece is directly transmitted to the clutch piece, the pressure plate is moved in a direction away from the clutch center, and the clutch is switched to a disengaged state.

An embodiment of the present invention illustrated in FIGS. 2 to 6 will now be described.

In the conventional clutch shown in FIG. 1 and the embodiment of the present invention, the input gear 1. Friction clutch 10. Starting clutch 3
0 has substantially the same structure, and the same components are given the same reference numerals as those of the clutch in FIG. 1.

A description of the common parts between the conventional clutch shown in FIG. 1 and the embodiment of the present invention will be omitted, and a description will be given of the different parts.

In the clutch shown in FIG. 1, a plurality of protrusions 11a are integrally formed on the clutch outer 11, but in this embodiment, an engaging piece 11a separate from the clutch outer 11 is integrated with the clutch outer 11 by a pin 9. A clutch shoe 33 is pivotally connected to the inner circumferential surface of a starting clutch outer 34 so as to be able to freely approach and separate from the pin 9 .

In addition, in the clutch shown in Fig. 1, the cambrat t-41
, 44 were formed with cam recesses 45.46, and the thrust balls 41 were interposed in the four cam parts 45.46.
In the embodiment of the present invention, the thrust generating mechanism 60 is configured as follows.

A locking portion 62 is formed on the outer periphery of a ring-shaped roller boulder 61 in the thrust generating mechanism 60.
2 is locked to the starting clutch outer 34 of the starting clutch 30, and the roller holder 61 and the starting clutch 3
A disc spring 67 is interposed between the starting clutch outer 34 of the roller holder 61, and three pairs of bifurcated protrusions 63 are protruded from the outer side of the roller holder 61 at equal intervals in the circumferential direction. ! A roller rotation @lIO3 is fitted and caulked to fM64, and a roller 66 is rotatably fitted to this roller rotation shaft 65, and the spring force of the disc spring 61 causes the roller 66 to rotate against the center inner surface of the pressure plate 16. bottle 6
8 to be pressed into contact with a cam member 69 integrally connected.

Further, three cam ridges 70 are formed on the inner surface of the cam member 69 in the circumferential direction corresponding to the roller 66, and the starting taratch outer 34 of the starting clutch 30 and the roller When the holder 61 rotates relatively, the roller 66 rides on the cam ridge 69a of the cam member 69 and the breath plate 1
6 and the cam member 69 are pushed outward (to the right in drawing C).

The pressure brake 1 to the support plate 11 that roughly collide with the inner end of the lift turbine 25 are connected to the spring I! ! tfi board 72
It is also interposed between the pressure plate 16 and the cam member 69.

Next, the clutch lever 2 in the clutch shown in FIG.
A clutch operating system 80 according to an embodiment of the present invention will be explained in contrast to the clutch operating system 80 (numerals 21 to 29) of No. 3.

The fixed part 82 of the clutch cam 81 is fixed to the clutch cover 55 with a pin 86, and the moving part 83 of the clutch cam 81 has three cam parts 84 formed in the circumferential direction, and is fixed to the cam part 84 of the moving part 83. A cam ball 85 is interposed between the moving part 82 and a central part 83a of the moving part 83 having a cylindrical shape.

Further, a hole 82a is formed in the center of the fixing part 82, and this hole 82a is formed at the center of the fixing part 82.
The adjust holder 81 is fitted to the clutch cover 5 and the base 87a of the adjuster 1 to the holder 87 is fitted to the clutch cover 5.
A stopper bin 88 is integrally formed at the center of the axis of the adjust holder 87, and by tightening the nut 89, the adjust holder 81 is integrally attached to the clutch cover 55. Ready to be installed.

Further, the tip end portion 87b G of the adjuster holder 87 is formed into a cylindrical shape, and an adjuster drum 90 is slidably fitted into this cylindrical tip portion 87b. The adjuster drum 90 is formed so that its tip can abut against the cylindrical portion 83a.

Furthermore, the interior of the adjuster drum 90 is partitioned by a partition wall 91 into a first chamber 92 near the fixed portion 82 of the clutch cam 81 and a second chamber 93 near the clutch piece 20.
In the center of 1 is the first chamber 92. A communication hole 94 communicating with the second chamber 93 is formed, and the tip of the stopper bin 88 is loosely fitted into the communication hole 94 so as to be freely retractable.

Furthermore, an adjuster boot 95 serving as a variable volume means is fitted into the first chamber 92 of the adjuster drum 90 , and the base of the adjuster boot 95 is oil-tightly attached to the base of the first chamber 92 . is attached to the stopper bin 88 in an oil-tight manner.

A pressure plug 96 is slidably fitted to the tip of the second chamber 93 of the adjuster drum 90, and a check ball 97 as a sealing means is sealed in the second chamber 93, and the check ball 97 is held in place. A coil spring 99 is interposed between the flexible ball case 98 and the pressure plug 96, and the spring force of the coil spring 99 causes
The pressure plug 96 is urged to protrude inward (to the left in the drawing) from the second chamber 93, and the check ball 97 is pushed into the stopper pin 88 via the ball case 98.
It is now placed squarely in .

A stopper 100 is integrally attached to the inner end (left end in the drawing) of the adjuster drum 90, and the stopper 100 prevents the pressure plug 96 from protruding from the second chamber 93J and falling off. It looks like this.

Furthermore, an oil passage 101 is formed in the adjuster holder 87 and the adjuster drum 90, and the oil in the oil reservoir 102 of the clutch cover 55 flows through the oil passage 101.
The lubricant is supplied to the clutch piece 20 side through the hole 90b of the flange 90a of the adjuster drum 90, so that the ball bearing 19 is lubricated.

Furthermore, a spring guide 103 is interposed on the outer periphery of the cylindrical portion 83 of the moving portion 83.
A coil spring 104 is interposed between the collar portion 103a of No. 3 and the moving portion 83.

Since the embodiments shown in FIGS. 2 to 6 are configured as described above, if the operating rod 24 is not cut off and the input gear 1 is rotating below a predetermined rotational speed, the engine will not start. Since the clutch 30 remains in the disconnected state and the starting clutch outer 34 is stationary, the O-Ra holder 61 does not rotate relative to the cam member 69, and the pressure plate 16 separates from the clutch disc 13.
Fi! Screw clutch 10 remains disconnected.

When the input gear 1 exceeds a predetermined rotational speed and the starting clutch 30 is connected, the starting clutch outer 34. Since the roller boulder 61 rotates relative to the cam member 69 and the roller 66 rides on the cam crest 70 of the cam member 69, the brake lever 1? The plate 16 moves closer to the pressure receiving part 15, and the clutch disc 13.
The friction plate 14 is connected to the pressure receiving part 15. Because it is squeezed by the pressure plate 16, the friction clutch 10
is in a connected state, and the clutch output shaft 4 rotates.

This I! When the friction clutch 10 is in the connected state, as the pressure plate 16 moves toward the pressure receiving part 15, the pressure plate support plate 71. The clutch piece 20 also moves outward (to the right in the drawing) via the lift turbine 25 and the ball bearing 19, and the clutch piece 20 comes into contact with the pressure plug 96 (see Figure 3), and the pressure plug 96 also moves outward. The volume of the second chamber 93 is reduced by being pushed, but the check ball 97 is pushed into the second chamber 93 by the stopper pin 88 and separated from the communication hole 94.
Since the communication hole 94 remains open, the pressure plug 9G can be moved outward.

In the state where the friction clutch 10 is connected in this way, the first chestnut rod 24 is operated to disengage M, and the clutch lever 23 is
When the transfer WjJ portion 83 is rotated via the cam ball 8
5 is in contact with the slope of the cam part 84 of the moving part 83;
moves inward (to the left in the drawing), as shown in FIG. The partition wall 91 also moves inward and the communication hole 94 is closed by the check ball 97, so the volume of the second chamber 93 is kept constant, the pressure plug 9G is integrated with the adjuster drum 90, and its connection As shown in FIG. 5, when the cam ball 85 rides on the flat surface of the moving part 83, the moving part 83 moves further inward (to the left in the drawing), and the adjuster drum 90. The pressure plug 96 also moves in the same direction by the same distance, and the clutch piece 20. The pressure plate 16 also overcomes the spring force of the leaf spring 67 and moves inward via the lift turbine 25 and the pressure plate support plate 71, and the ball bearing 18. Brefushi 1
Clutch disc 13 by one plate 16. Friction plate 14. The clamping pressure is released, and the friction clutch 10 is switched to the disconnected state.

By performing the operation in the opposite order to that described above from the disconnection operation state using the operating rod 24, the friction clutch 10 can be returned to the connected state by performing the operation in the reverse order.

In the illustrated embodiment, the communication hole 94 is opened and the first chamber 92. The second chamber 93 is in communication, the breath plug 96 can be freely pushed into the second chamber 93 by the clutch piece 20, and the clutch disconnection force does not act on the pressure plate 16 at all, and the breath plug 96 can be freely pushed into the second chamber 93 by the clutch piece 20. Only when the moving part 83 of the clutch cam 81 moves toward the clutch piece 20 by operating the rod 24, the communication hole 94 is closed and the second chamber 93 is closed.
is in a sealed state, and the pressure plug 96 is closed to the second chamber 93.
The clutch piece 20 of the transfer VJ portion 83 is fixed to
The clutch breaking force directed toward the clutch piece 20° ball bearing 19. is applied by the pressure plug 96. Lifter pin 25. Pressure plate support plate 71. The pressure plays 1 and 16 move through the cam member 69, and the l clutch 1
0 is in the disconnected state, so the latch disc 13. There is no need for any adjustment work corresponding to variations in the thickness of the friction plate 14.

As a result, assembly, maintenance and servicing are extremely simple.

Further, the thrust generated by the thrust generating mechanism 60 returns to the coil spring 104. Moving part 83. The cam ball 85° is transmitted to the clutch cover 55 via the fixing part 82, and the adjustment holder 87. Since the thrust does not act on the adjuster drum 90, the durability of the clutch operation system 80 is high.

In the embodiment described above, the stopper pin 88 is integrally attached to the adjuster holder 87, but if the stopper pin 88 is attached to the adjuster holder 87 so as to be adjustable in the axial direction, the length of the cylindrical portion 83a of the moving section 83 can be adjusted. The clutch disengagement timing of the clutch operating system 80 can be adjusted due to errors in the position of the partition wall 91 on the adjuster drum 90 and the position of the collar portion 90a of the adjuster drum 90.

This J: sea urchin In the present invention, pressure play 1-
Even if the pressure plug receives a force pushing into the adjuster drum due to the movement of the pressure plug toward the clutch cam fixing part, the first chamber and the second chamber in the adjuster drum will not be connected unless the clutch operation member is disconnected. Since the pressure plug can freely slide within the adjuster drum while maintaining communication with the chamber, it is completely unaffected by changes in thickness due to wear or replacement of the clutch disc and friction plate, and the clutch The clutch can be reliably connected or disconnected in response to the operation of the operating member.

Furthermore, the present invention is not affected by variations in the thickness of the clutch disk and friction plate, so highly skilled and long-time adjustment work is not required, and assembly and maintenance are simplified.

Furthermore, in the present invention, although oil is sealed in the adjuster drum and it operates hydraulically, it does not require any supply of pressure oil from the outside, and the structure is simple, and it is free from oil sludge, etc. There is no contamination by foreign matter, the operation is reliable, and costs can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a vertical side view of a conventional vehicle clutch, FIG. 2 is a vertical side view of an embodiment of the vehicle clutch according to the present invention, and FIGS. 3 to 5 are enlarged vertical side views of the main parts thereof. In the diagrams, Fig. 3 shows a state in which the friction clutch is connected, Fig. 4 shows a state in the middle of manually operating the clutch operation system to disengage the clutch, and Fig. 5 shows a state in which the clutch disengagement operation is completed. FIG. 6 is a perspective view of the moving part of the clutch cam. 1...Input gear, 4...Clutch output glaze, 9...
Pin, 10...Friction clutch, 11...Clutch outer, 12...Clutch center, 13...Clutch disc, 14...Friction plate, 15...
・Pressure receiving part, 16...Pressure play 1~. 11...
・Nut, 19... Ball bearing, 20... Clutch piece, 23... Clutch lever 124...
Operating rod, 25... Lift coupin, 30... Starting clutch, 33... Clutch shoe, 34... Starting clutch outer, 35... One-way clutch) 60... Thrust generation mechanism, 61... Roller holder, 62...locking part, 63...bifurcated protrusion, 64...
・0-shaped groove, 65...roller rotating shaft, 66...roller, 67...disc spring, 68...pin, 69...cam member, 70...cam crest, 71...・Pressure plate support plate, 72... Spring friction plate, 80...
Clutch operation system, 81...Clutch cam, 82...
Fixed part, 83... Moving part, 84... Cam part, 85.
... Cam ball, 86 ... Pin, 87 ... Adjustment holder, 88 ... Stopper bin, 89 ... Nut, 90 ... Adjuster drum, 91 ... Bulkhead, 92
...First chamber, 93...Second chamber, 94...Communication hole,
95... Adjuster boot, 96... Pressure plug, 91... Check ball, 98... Ball case, 99... Coil spring, 100... Stopper, 101... Oil passage, 102... ...Oil reservoir, 103...Spring guide, 104...Return coil spring.

Claims (1)

[Claims] A plurality of clutch disks provided on the clutch outer and friction plates provided on the clutch center are stacked alternately, and the clutch disks and friction plates are connected to the clutch center and a pressure plate biased toward the clutch center. In a vehicle clutch that is pressed and clamped to bring the clutch into a connected state, and which is brought into a clutch disconnected state by moving the pressure plate to the opposite side, a clutch piece is rotatably provided at one end coaxially with the clutch center, and the clutch piece is rotatably provided at one end thereof coaxially with the clutch center. An adjustment holder is integrally provided on the clutch cam fixing part that is fixed at a predetermined distance from the center, facing the clutch center and coaxially therewith. An adjuster drum that moves along the axial direction of the clutch center is fitted therein, and the inner space of the adjuster drum is partitioned into two chambers along the axial direction of the clutch center by a partition wall provided with a communication hole, and the inner space of the adjuster drum is partitioned into two chambers along the axial direction of the clutch center. A stopper pin attached to the clutch cam fixing part or the adjuster holder is disposed in the first chamber near the fixing part and extends through the communication hole and protrudes freely into the second chamber on the opposite side of the clutch cam fixing part. , a variable volume means is provided in which the volume of the sealed space communicating with the communication hole can absorb fluctuations in the volume in the second chamber, and an open end of the second chamber closer to the clutch piece is capable of abutting with the clutch piece. A clutch for a vehicle, wherein a pressure plug is slidably fitted, and a sealing means for sealing a communication hole of the partition wall is provided in the second chamber.