JP2004308708A - Clutch operating mechanism - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve service life and reliability of a device of a clutch operating mechanism formed of a hydraulic cylinder. <P>SOLUTION: A hydraulic presser device 8 is provided with a hydraulic cylinder 81, which is formed of an annular housing 82, an annular piston 83 and an oil passage connecting member 84, and an oil pressure control device 9. The annular housing 82 is fixed to a clutch cover 71. The annular piston 83 forms an oil chamber 86 filled with the operating fluid between the annular housing 82, and moves in the axial direction with a pressure change of the operating fluid inside the oil chamber 86 to apply a pushing load to a pressure plate 72. The oil passage connecting member 84 is connected to the oil pressure control device 9, and provided to be rotated in relation to the annular housing 82, and connects the oil pressure control device 9 to the oil chamber 86 so that the operating fluid can flow. The oil pressure control device 9 operates the oil pressure of the operating fluid inside the oil chamber 86. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a device for transmitting and interrupting torque between a clutch operating mechanism, in particular, a flywheel connected to a crankshaft and an input shaft of a transmission, and includes a friction connecting portion disposed close to the flywheel. A clutch disc assembly having a clutch disc assembly connected to an input shaft, and a clutch cover assembly having a clutch cover fixed to a flywheel and a pressure plate pressing a frictional connection portion against the flywheel. The present invention relates to a clutch operation mechanism for applying a pressing load to a plate.
[0002]
[Prior art]
The clutch device is mounted on a crankshaft of an engine of a vehicle, and transmits and cuts torque from the engine to a transmission. The clutch device includes, for example, a flywheel fixed to a tip of a crankshaft, a clutch disc assembly having a friction coupling portion disposed close to a friction surface of the flywheel and coupled to an input shaft of a transmission, The clutch cover assembly includes a clutch cover assembly mounted on the flywheel and capable of pressing the friction coupling portion toward the flywheel side, and a clutch operation mechanism for applying an operation load to the clutch cover assembly to perform a clutch operation.
[0003]
As a clutch cover assembly used in such a clutch device, there is a direct push type clutch cover assembly in which a clutch connection operation is performed by applying a pressing load from a clutch operation mechanism. The direct push type clutch cover assembly consists of a clutch cover fixed to the flywheel, a pressure plate located inside the clutch cover and close to the frictional connection, and a lever plate supported by the clutch cover and abutting against the pressure plate. It is configured. In this case, the clutch operation mechanism applies a pressing load to the pressure plate by pressing the lever plate.
[0004]
As such a clutch operating mechanism, for example, there is a mechanism including a hydraulic pressing device described in Japanese Patent Application No. 2001-30050.
Such a hydraulic pressing device is composed of, for example, a hydraulic cylinder and a hydraulic control device, and is disposed in an annular housing in which movement in a rotational direction is restricted with respect to a transmission, and movably in an axial direction in the annular housing. And an annular piston. The annular piston is in contact with the lever plate via a bearing.
[0005]
In this hydraulic cylinder, when hydraulic oil is supplied from a hydraulic control device to an oil chamber in an annular housing, an annular piston is moved in an axial direction with respect to a clutch cover to apply a pressing load to a pressure plate to engage a clutch. Is performed. Further, in this hydraulic pressing device, when the clutch is engaged, a pressing load is applied to the pressure plate via the annular piston, and a canceling load is applied to the clutch cover via the annular housing on the side opposite to the pressing load. Therefore, the load acting on the crankshaft from the flywheel can be reduced.
[0006]
[Problems to be solved by the invention]
In the hydraulic cylinder as described above, the bearing interposed between the annular piston and the lever plate allows the relative rotation between the annular piston and the lever plate (that is, the relative rotation between the annular piston and the clutch cover assembly). To make it possible). For this reason, in the hydraulic pressing device provided with this hydraulic cylinder, since there is a high possibility of failure due to the use of this bearing, for example, grease leakage, abnormal noise, breakage, etc., the reliability is low and the device life is short. There is a problem. In addition, due to the existence of the bearing, there is a problem that the cost of the hydraulic pressing device and the space in the axial direction increase.
[0007]
An object of the present invention is to increase the life and reliability of a clutch operation mechanism including a hydraulic cylinder.
[0008]
[Means for Solving the Problems]
The clutch operating mechanism according to claim 1, wherein the clutch operating mechanism is a device for transmitting and interrupting torque between a flywheel connected to a crankshaft and an input shaft of a transmission, and is a friction connecting portion disposed close to the flywheel. A clutch disk assembly having a clutch disc assembly connected to the input shaft and a clutch cover assembly having a clutch cover fixed to the flywheel and a pressure plate pressing the frictional connection portion against the flywheel. A clutch operating mechanism for applying a pressing load to a pressure plate, comprising a cylinder member, a piston, a pressure operating mechanism, and a connecting member. The cylinder member is fixed to the clutch cover. The piston forms a fluid chamber filled with the working fluid between the piston and the cylinder member, and can move in the axial direction due to a change in pressure of the working fluid in the fluid chamber to apply a pressing load to the pressure plate. The pressure operation mechanism is a mechanism for operating the pressure of the working fluid in the fluid chamber. The connecting member is connected to the pressure operating mechanism and is provided so as to be relatively rotatable on the cylinder member, and connects the pressure operating mechanism and the fluid chamber so that the working fluid can flow.
[0009]
In this clutch operation mechanism, the cylinder member is fixed to the clutch cover, and is connected to an external pressure operation mechanism via a connection member provided so as to be relatively rotatable. Are not rotated relative to each other. For this reason, in the conventional clutch operating mechanism, the bearing interposed between the piston and the clutch cover assembly can be omitted.
[0010]
Accordingly, it is possible to eliminate the possibility of failures due to the use of the bearing, for example, grease leakage, abnormal noise, breakage, and the like, and to increase the device life and reliability of the clutch operation mechanism.
According to a second aspect of the present invention, in the clutch operation mechanism according to the first aspect, the clutch cover assembly has a lever plate that comes into contact with the pressure plate and is pressed toward the pressure plate by the axial movement of the piston. The piston is in direct contact with the lever plate.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a clutch device employing a clutch operation mechanism according to an embodiment of the present invention will be described with reference to the drawings.
(1) Configuration of Clutch Device FIG. 1 shows a clutch device 1 according to an embodiment of the present invention. Here, OO in the figure is the rotation axis of the clutch device 1. The clutch device 1 is a device for transmitting and interrupting torque from a flywheel 3 connected to a crankshaft 2 on the axial engine side (left side in FIG. 1) to an input shaft 4 on the axial transmission side (right side in FIG. 1). is there.
[0012]
In the present embodiment, the flywheel 3 is an annular member, and is fixed to the distal end of the crankshaft 2 via a disk-shaped flexible plate 5. Specifically, the inner peripheral portion of the flywheel 3 is fixed to the outer peripheral portion of the flexible plate 5 by a plurality of bolts 51, and the inner peripheral portion of the flexible plate 5 is fixed to the distal end portion of the crankshaft 2 by a plurality of bolts 52. Fixed. That is, the torque of the crankshaft 2 is transmitted to the flywheel 3 via the flexible plate 5. Here, since the flexible plate 5 is thinner than the crankshaft 2 and the flywheel 3, the flexible plate 5 has sufficient rigidity in the rotation direction, but has low rigidity in the bending direction. ing.
[0013]
On the transmission side of the clutch device 1, a transmission housing 11 is arranged. The transmission housing 11 has a front wall 11a disposed on the transmission side of the clutch device 1. A bell-shaped cylindrical portion 11b is formed so as to cover the outer peripheral side of the clutch device 1 from the outer peripheral portion of the front wall 11a. Extending.
[0014]
The clutch device 1 mainly includes a clutch disk assembly 6, a clutch cover assembly 7, and a hydraulic pressing device 8 (clutch operating mechanism).
The clutch disk assembly 6 includes a friction connecting portion 61 disposed on the outer peripheral side and formed of friction facing and the like, a damper mechanism 62 including a clutch plate and a retaining plate fixed to the friction connecting portion 61 and a coil spring, and the like. And a hub flange 63 connected to the mechanism 62. The friction connecting portion 61 is arranged close to the friction surface 3 a of the flywheel 3. The inner peripheral portion of the hub flange 63 is spline-engaged with the input shaft 4.
[0015]
The clutch cover assembly 7 is a mechanism that is mounted on the flywheel 3 and presses and releases the friction coupling portion 61 of the clutch disc assembly 6 with respect to the flywheel 3. The clutch cover assembly 7 mainly includes a clutch cover 71, a pressure plate 72, and a lever plate 73.
The clutch cover 71 is a dish-shaped member having a large-diameter hole formed in the center. The outer peripheral end of the clutch cover 71 is fixed to the flywheel 3 by a plurality of bolts 74. Further, the clutch cover 71 is formed with an annular portion 71a extending toward the inner peripheral side and proximate to a hydraulic pressing device 8 described later. In this embodiment, a plurality of slit holes 71b are formed in the annular portion 71a.
[0016]
The pressure plate 72 is disposed inside the clutch cover 71. For this reason, the surface on the transmission side on the outer peripheral side of the pressure plate 72 is covered with the clutch cover 71. The pressure plate 72 has a pressing surface 72 a facing the frictional connection portion 61 of the clutch disk assembly 6. Further, a plurality of protruding portions 72b extending toward the transmission side are formed on the inner peripheral side of the transmission side surface (the surface opposite to the pressing surface 72a) of the pressure plate. The pressure plate 72 is connected to the clutch cover 71 at a plurality of positions in the circumferential direction so as to be relatively non-rotatable and movable in a predetermined range in the axial direction by the strap plate 75. Further, the strap plate 75 urges the pressure plate 72 toward the transmission when the clutch is engaged.
[0017]
The lever plate 73 is an annular member having a center hole. In the lever plate 73, a plurality of slits extending radially outward from the inner peripheral edge thereof and a plurality of slits radially extending radially outward from the outer peripheral edge are formed alternately in the circumferential direction. By forming a large number of slits in this way, the lever plate 73 fixes the axial displacement of the outer peripheral edge thereof, and when the axial displacement is given near the inner peripheral edge, the lever plate 73 has a minimum rigidity. It has no structure. That is, when a displacement is given under such conditions, only a small amount of elastic energy is stored inside the lever plate 73. Therefore, the lever plate 73 has an integral structure in which each lever portion is connected in the circumferential direction. However, it works like a single lever. The outer peripheral edge of the lever plate 73 is engaged with a pin fixed to the clutch cover 71, and the engagement causes the lever plate 73 to rotate integrally with the clutch cover 71. The transmission-side surface of the outer peripheral end of the lever plate 73 is in contact with the clutch cover 71. Further, a radially intermediate portion of the lever plate 73 is in contact with the protrusion 72 b of the pressure plate 72.
[0018]
The hydraulic pressing device 8 is a mechanism for applying a pressing load to the clutch cover assembly 7 (specifically, applying a pressing load to the pressure plate 72 via the lever plate 73). The hydraulic pressing device 8 also has a function of applying a canceling load to the clutch cover 71 on the side opposite to the pressing load when applying the pressing load. In this way, the clutch operation load is balanced as the internal force of the clutch device 1 to reduce or eliminate the load on the engine. As a result, the load on the thrust bearing of the crankshaft 2 of the engine is reduced.
[0019]
As shown in FIG. 2, the hydraulic pressing device 8 is arranged on the outer periphery of the input shaft 4 and on the transmission side of the inner periphery of the lever plate 73. The hydraulic pressing device 8 mainly includes a hydraulic cylinder 81. The hydraulic cylinder 81 mainly includes an annular housing 82 (cylinder member), an annular piston 83 (piston), and an oil passage connection member 84 (connection member). Here, FIG. 2 is an enlarged view showing the vicinity of the hydraulic cylinder 81 in FIG. 1, and is a view showing a state in which a pressing load is not applied to the pressure plate 72.
[0020]
The annular housing 82 is fixed to the clutch cover 71 and arranged so as to rotate integrally with the clutch cover assembly 7, and is arranged concentrically with the rotation axis OO of the clutch device 1. The annular housing 82 mainly has an inner wall portion 82a and an outer wall portion 82b, and an annular space extending in the axial direction is formed therebetween. The axial transmission side of this annular space is closed, but the engine side is open. Further, the annular housing 82 has an annular portion 82c extending from the axial end of the outer wall portion 82b toward the engine side toward the outer peripheral side. In the present embodiment, the annular portion 82c has a plurality of claw portions 82d formed at the outer peripheral end. The claw portion 82d is fixed to the annular portion 71a by being bent after being inserted into the slit hole 71b of the annular portion 71a of the clutch cover 71.
[0021]
The annular piston 83 is elongated in the axial direction and extends in the shape of a cylinder, and is arranged in an annular space, but the end on the engine side projects. The annular piston 83 is axially movable with respect to the annular housing 82. In the present embodiment, the engine-side end of the annular piston 83 is a distal end 83a that directly contacts the transmission side surface at the inner peripheral end of the lever plate 73.
[0022]
Two annular seal members 85a and 85b are fixed to the transmission-side end of the annular piston 83. The sealing members 85a and 85b are in contact with the inner surfaces of the inner wall portion 82a and the outer wall portion 82b, respectively, so as to seal both sides in the axial direction. As a result, an oil chamber 86 (fluid chamber) is secured on the axial transmission side of the seal members 85a and 85b in the space of the annular housing 82. An oil hole 82e and an oil groove 82f are provided in a portion of the outer wall portion 82b corresponding to the oil chamber 86 for supplying and discharging hydraulic oil. The oil hole 82e is a hole extending from the oil chamber 86 toward the outer periphery. The oil groove 82f is an annular groove provided on the outer peripheral surface of the outer wall portion 82b, and a part thereof is communicated with the oil hole 82e.
[0023]
The oil passage connection member 84 is an annular member provided so as to cover the inner and outer peripheral sides of the annular housing 82 and the transmission side, and is provided between the hydraulic supply unit 92 and the oil chamber 86 to be described later via the oil supply pipe 10. It is provided to enable the distribution of hydraulic oil. The oil passage connecting member 84 mainly includes an annular portion 84a, an inner cylindrical portion 84b, and an outer cylindrical portion 84c.
[0024]
The annular portion 84a is arranged on the transmission side of the annular housing 82 at an interval in the axial direction. The transmission side surface of the annular portion 84a is in contact with the inner peripheral portion of the front wall 11a of the transmission housing 11.
The inner cylindrical portion 84b extends from the inner peripheral end of the annular portion 84a toward the engine, and is disposed between the inner wall portion 82a of the annular housing 82 and the input shaft 4 in the radial direction. A bearing 87 is arranged between the inner cylinder portion 84b and the inner wall portion 82a of the annular housing 82. In the present embodiment, the bearing 87 is a needle bearing. A seal member 88 is provided at an end of the inner cylinder portion 84b on the engine side so as to seal the hydraulic oil from leaking outside through a gap between the inner cylinder portion 84b and the inner wall portion 82a. I have.
[0025]
The outer cylindrical portion 84c extends from the outer peripheral end of the annular portion 84a toward the engine. A seal member 89 is provided at the end of the outer cylinder 84c on the engine side to seal the hydraulic oil so as not to leak outside through a gap between the outer cylinder 84c and the outer wall 82b.
As shown in FIG. 1, the oil passage connection member 84 is provided with a connection oil passage 84d and a discharge oil passage 84e. The connection oil passage 84 d is an oil hole provided for communicating the oil groove 82 f of the annular housing 82 with the oil supply pipe 10. In the present embodiment, the connection oil passage 84d is provided at a position corresponding to the axial position where the oil groove 82f of the annular housing 82 of the outer cylindrical portion 84c is provided. Further, between the annular housing 82 and the oil passage connection member 84, annular seal members 90 for sealing a gap between the oil groove 82f and the connection oil passage 84d in the radial direction are provided on both axial sides of the oil groove 82f. Have been. The discharge oil passage 84 e is an oil passage provided for returning the hydraulic oil leaked from the seal member 90 into the gap between the annular housing 82 and the oil passage connection member 84 to the hydraulic supply unit 92 via the oil discharge pipe 12. is there. In the present embodiment, the discharge oil passage 84e is a first discharge oil passage 84f that connects the gap near the seal member 89 to the oil discharge pipe 12, and a second discharge oil passage 84f that connects the gap near the annular portion 84a to the oil discharge pipe 12. And two discharge oil passages 84g.
[0026]
As described above, the oil passage connection member 84 is positioned in the radial direction by the annular housing 82, and is positioned in the axial direction by the front wall 11a. Further, since the oil passage connection member 84 is provided to be rotatable relative to the annular housing 82 via the bearing 87 and the seal member 90, even when the annular housing 82 is integrally rotated with the clutch cover 71, The state in which the movement in the rotation direction is restricted with respect to the transmission housing 11 is maintained.
[0027]
The hydraulic pressing device 8 further includes a hydraulic control device 9 (pressure operation mechanism). The hydraulic control device 9 is a device for controlling the load applied from the clutch cover assembly 7 to the clutch disk assembly 6 by controlling the hydraulic pressure of the hydraulic oil supplied to the hydraulic cylinder 81. The hydraulic control device 9 includes a control unit 91 including a microcomputer, a hydraulic supply unit 92 including a master cylinder or a hydraulic pump, and a hydraulic pressure in the hydraulic cylinder 81 for detecting a load applied to the pressure plate 72. And a hydraulic pressure sensor 93 for detection. The control section 91 can control the hydraulic pressure of the hydraulic oil supplied from the hydraulic pressure supply section 92 based on the detection value from the hydraulic pressure sensor 93.
[0028]
(2) Operation of Clutch Device Next, the operation of the clutch device 1 will be described with reference to FIGS. Here, FIG. 3 is an enlarged view showing the vicinity of the hydraulic cylinder 81 in FIG. 1 and is a view showing a state in which a pressing load is applied to the pressure plate 72.
{Circle around (1)} When the clutch-coupled driver operates the clutch pedal, for example, a signal is sent from the control unit 91 of the hydraulic control device 9 in conjunction with the movement thereof, and the oil is supplied from the hydraulic supply unit 92 through the oil supply pipe 10. The working oil is supplied to the connection oil passage 84d of the passage connection member 84, and further supplied to the oil chamber 86 of the hydraulic cylinder 81 via the oil groove 82f and the oil hole 82e. Here, since the annular housing 82 rotates integrally with the clutch cover 71, the annular housing 82 rotates relative to the oil passage connection member 84. However, since the oil groove 82f is an annular groove, a part of which is communicated with the connection oil passage 84d, the hydraulic oil is stably supplied from the hydraulic pressure supply unit 92 to the oil chamber 86. . When the hydraulic oil is supplied to the oil chamber 86, the hydraulic oil leaks from the seal member 90 into a gap between the oil passage connecting member 84 and the annular housing 82. And the oil is returned to the hydraulic supply unit 92 via the oil discharge pipe 12.
[0029]
As a result, the annular piston 83 moves toward the engine side in the axial direction and applies a constant load to the inner peripheral end of the lever plate 73, whereby the posture of the lever plate 73 changes (see arrow X in FIG. 3). Here, a load several times the load from the annular piston 83 is applied to the pressure plate 72 according to the lever ratio. The pressing surface 72a of the pressure plate 72 pushes the friction connecting portion 61 toward the engine in the axial direction, so that the friction connecting portion 61 and the flywheel 3 are frictionally engaged. As a result, the torque from the flywheel 3 is transmitted to the clutch disk assembly 6 and output to the input shaft 4. Here, since the annular piston 83 rotates integrally with the annular housing 82, the annular piston 83 is relatively rotated with the lever plate 73 even though the distal end portion 83 a of the annular piston 83 directly contacts the inner peripheral end of the lever plate 73. A load can be applied from the distal end portion 83a of the annular piston 83 to the inner peripheral end of the lever plate 73 without rotating.
[0030]
In this clutch connected state, the annular housing 82 of the hydraulic cylinder 81 is urged toward the transmission in the axial direction by the hydraulic pressure generated in the oil chamber 86. Therefore, the load on the transmission side in the axial direction is applied to the annular portion 71a of the clutch cover 71 via the annular portion 82c of the annular housing 82. As described above, the load (operation load) is applied to the flywheel 3 from the pressure plate 72 and the frictional connection portion 61 toward the engine in the axial direction. Since the load (cancel load) is also applied, the load acting on the crankshaft 2 from the flywheel 3 is reduced.
[0031]
{Circle around (2)} When the driver disengages the clutch, for example, operates the clutch pedal, a signal is sent to the control unit 91 in conjunction with the movement, and there is no hydraulic pressure in the hydraulic cylinder 81 to push the annular piston 83 in the oil chamber 86 toward the engine. . As a result, the pressing load applied from the lever plate 73 to the pressure plate 72 is eliminated. At this time, the urging force from the strap plate 75 moves the pressure plate 72 toward the transmission in the axial direction. As a result, the friction coupling portion 61 of the clutch disk assembly 6 separates from the flywheel 3, and the clutch coupling is released (see the arrow Y in FIG. 2). Further, at the time of the clutch release described above, the annular housing 82 releases the urging force applied to the clutch cover 71.
[0032]
(3) Features of Hydraulic Pressing Device In the hydraulic pressing device 8 described above, the pressing load applied from the lever plate 73 to the pressure plate 72 is equal to the load applied from the annular piston 83 to the inner peripheral end of the lever plate 73. , The lever ratio is integrated. That is, in order to control the pressing load, only the hydraulic pressure of the hydraulic oil supplied from the hydraulic pressure supply unit 92 of the hydraulic control device 9 needs to be controlled, so that the reliability of the clutch control is improved.
[0033]
Further, in the hydraulic pressing device 8, an annular housing 82 constituting a hydraulic cylinder 81 is fixed to the clutch cover 71, and an external hydraulic control device is provided via an oil passage connecting member 84 provided to be relatively rotatable. 9 is connected. For this reason, the annular piston 83 provided in the annular space of the annular housing 82 and the clutch cover assembly 7 (specifically, the lever plate 73) are prevented from rotating relative to each other. Therefore, in the conventional hydraulic pressing device, the bearing interposed between the annular piston and the clutch cover assembly can be omitted. This eliminates the risk of failure due to the use of the bearing, for example, grease leakage, abnormal noise, breakage, and the like, and can increase the service life and reliability of the hydraulic pressing device.
(4) Other Embodiments Although the embodiments of the present invention have been described based on the drawings, the specific configuration is not limited to these embodiments, and can be changed without departing from the spirit of the invention. It is.
[0034]
(1) In the above embodiment, the annular housing is fixed to the clutch cover by inserting the claw portion of the annular housing into the slit hole of the clutch cover and then bending it. However, the present invention is not limited to this method. Other methods may be used.
(2) The positions of the oil holes and oil grooves provided in the annular housing are not limited to the above-described embodiment, and may be any configuration as long as it can be connected to an external oil pressure supply unit via an oil passage connection member.
[0035]
【The invention's effect】
As described in the above description, in the clutch operation mechanism according to the present invention, the cylinder member is fixed to the clutch cover, and is connected to the external pressure operation mechanism via the connection member provided to be relatively rotatable. As a result, the piston and the clutch cover assembly do not rotate relative to each other. For this reason, in the conventional clutch operating mechanism, the bearing interposed between the piston and the clutch cover assembly can be omitted, and the device life and reliability of the clutch operating mechanism can be increased.
[Brief description of the drawings]
FIG. 1 is a schematic longitudinal sectional view of a clutch device employing a hydraulic pressing device as a clutch operating mechanism according to an embodiment of the present invention.
FIG. 2 is a partially enlarged view of FIG. 1 and is a schematic longitudinal sectional view near a hydraulic cylinder.
FIG. 3 is a partially enlarged view of FIG. 1 and is a schematic longitudinal sectional view near a hydraulic cylinder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Clutch device 2 Crankshaft 3 Flywheel 4 Input shaft 6 Clutch disk assembly 7 Clutch cover assembly 8 Hydraulic pressing device (clutch operating mechanism)
9 Hydraulic control device (pressure operation mechanism)
71 clutch cover 72 pressure plate 82 annular housing (cylinder member)
83 annular piston (piston)
84 Oilway connection member (connection member)
86 Oil chamber (fluid chamber)

Claims (2)

A device for transmitting and interrupting torque between a flywheel connected to a crankshaft and an input shaft of a transmission, the device having a frictional connection portion disposed close to the flywheel and connected to the input shaft. A clutch device comprising: a clutch disc assembly; and a clutch cover assembly having a clutch cover fixed to the flywheel and a pressure plate for pressing the frictional connection portion against the flywheel. A clutch operating mechanism for imparting
A cylinder member fixed to the clutch cover,
A piston capable of forming a fluid chamber filled with a working fluid between the cylinder member and a piston capable of moving in the axial direction by a change in pressure of the working fluid in the fluid chamber to apply a pressing load to the pressure plate. ,
A pressure operation mechanism for operating the pressure of the working fluid in the fluid chamber,
A connection member that is connected to the pressure operation mechanism, is provided to be relatively rotatable on the cylinder member, and connects the pressure operation mechanism and the fluid chamber so that a working fluid can flow.
A clutch operating mechanism equipped with. The clutch cover assembly has a lever plate that comes into contact with the pressure plate and is pressed toward the pressure plate by the axial movement of the piston,
The piston is in direct contact with the lever plate,
The clutch operating mechanism according to claim 1.

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