JP2001263372A - Clutch device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the assembling performance of a clutch device. SOLUTION: A friction connecting member 6 has a first friction surface 6a and a second friction surface 6b, and the torque is input to the friction connecting member 6 from a crankshaft 2. A first clutch disk assembly 7 has a first friction connecting part 21 arranged close to a first friction surface 6a, and can transmit the torque to a first input shaft 3. A second clutch disk assembly 8 has a second friction connecting part 22 arranged close to the second friction surface 6b, and can transmit the torque to a second input shaft 4. Clutch operating mechanism 9, 10 are installed in the friction connecting member 6, and can separately connect the first friction connecting part 21 and the second friction connecting part 22 to the friction connecting member 6 and can release the connection thereof. A damper mechanism 41 directly connects the clutch operating mechanism 9, 10 to the crank shaft 2 elastically in the rotating direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clutch device, and more particularly to a clutch device capable of separately transmitting and disconnecting torque from a crankshaft of an engine to first and second input shafts of a transmission. .

[0002]

2. Description of the Related Art A clutch device is a device for transmitting torque from a crankshaft of an engine to a transmission and interrupting the transmission of torque as necessary. The clutch device includes a flywheel fixed to the crankshaft,
A clutch disc assembly having a friction coupling portion proximate to a friction surface of a flywheel, and a clutch operating mechanism fixed to the flywheel for urging the friction coupling portion against the friction surface of the flywheel and releasing the urging as necessary It is composed of

As a clutch device, there is a double clutch capable of separately transmitting torque or interrupting torque transmission to two input shafts extending from a transmission. Such a double clutch has a friction coupling member to which torque is input from the crankshaft of the engine. A first friction surface is formed on the engine side in the axial direction of the friction coupling member, and a second friction surface is formed on the transmission side in the axial direction. Further, a first friction coupling portion of the first clutch disc assembly is disposed near the first friction surface. The first clutch disc assembly is connected to the first input shaft. A second friction coupling portion of the second clutch disc assembly is disposed near the second friction surface. The second clutch disc assembly is connected to the second input shaft. Further, a clutch operating mechanism for operating connection / disconnection of both clutch disk assemblies is provided. The clutch operating mechanism includes a cover member, a pressure plate, an elastic member supported by the cover member and biasing the pressure plate to the frictional connection portion.

A damper mechanism for absorbing and attenuating torque fluctuations from an engine is disposed, for example, between a friction coupling member and a member on the engine side. The damper mechanism is
Generally, an input side member fixed to a member on the engine side,
An output-side member fixed to the clutch operating mechanism side and an elastic member for elastically connecting the two members in the rotational direction are provided.

[0005]

When a conventional clutch device is assembled, a damper mechanism is previously attached to one of the clutch device and a member on the engine side. When the engine is assembled to the transmission in this state, the damper mechanism is fixed to the other of the clutch device and the member on the engine side by bolts or rivets.

As described above, since it is necessary to use a fastening member such as a bolt or a rivet when assembling the clutch device, the assembling workability is reduced. The object of the present invention is
An object of the present invention is to improve the assemblability of a clutch device.

[0007]

According to the clutch device of the present invention, it is possible to separately operate torque transmission and cutoff from the crankshaft of the engine to the first and second input shafts of the transmission. Things,
The vehicle includes a friction coupling member, a first clutch disc assembly, a second clutch disc assembly, a clutch operating mechanism, and a damper mechanism. The friction coupling member has a first friction surface on the axial engine side and a second friction surface on the axial transmission side, and receives a torque from a crankshaft.
The first clutch disc assembly has a first friction coupling portion disposed close to the first friction surface, and is capable of transmitting torque to the first input shaft. The second clutch disc assembly has a second friction coupling portion disposed close to the second friction surface, and is capable of transmitting torque to the second input shaft. The clutch operating mechanism is mounted on the friction connecting member, and is capable of separately connecting and disconnecting the first friction connecting portion and the second friction connecting portion to and from the friction connecting member. The damper mechanism is
This is a mechanism for elastically connecting the clutch operating mechanism directly to the crankshaft in the rotational direction.

In this clutch device, the structure is simplified because the clutch cover is connected to the crankshaft via the damper mechanism. According to a second aspect of the present invention, in the first aspect, the damper mechanism includes an elastic member which is held by one of the crankshaft and the clutch operation mechanism, and is detachably engaged with the other in the axial direction.

In this clutch device, the clutch device can be assembled by approaching the clutch device in the axial direction with respect to the crankshaft. That is, assemblability is improved as compared with the related art. According to a third aspect of the present invention, in the clutch device according to the second aspect, the damper mechanism includes a disk-shaped plate member disposed on an axial engine side of a tip end of the crankshaft; An elastic member whose side is held, and a drive member fixed to a crankshaft having abutment portions detachable from the axial direction at both ends in the circumferential direction of the elastic member.

In this clutch device, the elastic member is held in advance by the plate member, and at the time of assembly, the contact portions of the drive member are axially engaged with both circumferential ends of the elastic member. Thus, the assemblability is improved. In the clutch device described in claim 4, in claim 3, the plate member has a holding portion for holding the elastic member on the engine side in the axial direction.

In this clutch device, the elastic member cannot be dropped from the plate member by the holding portion. In the clutch device according to the fifth aspect, in the third or fourth aspect, the clutch operation mechanism includes a pressure plate disposed on the engine side in the axial direction of the first clutch disc assembly, and a pressure plate supported by the plate member. It has an urging member for urging the disk side.

In this clutch device, since the plate member has a role of holding the elastic member and a role of supporting the urging member, the total number of parts is reduced. Claim 6
In the clutch device described in (4), in claim 4, the elastic member is disposed on the inner peripheral side of the pressure plate.
In this clutch device, since the elastic member is arranged on the inner peripheral side of the pressure plate, the radial dimension can be reduced while the overall axial dimension is suppressed.

According to a seventh aspect of the present invention, in the clutch device according to any one of the third to sixth aspects, the outer peripheral end of the plate member is fixed to the friction coupling member, and the inner peripheral end is rotatably supported by the crankshaft. I have. In this clutch device,
When bending vibration is transmitted from the engine side, the plate member bends in the bending direction to absorb the vibration.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment FIG. 1 is a schematic longitudinal sectional view of a clutch device 1 as one embodiment of the present invention. The clutch device 1 is connected to the first and second transmissions from the crankshaft 2 of the engine.
This is a device for transmitting and interrupting torque to the input shafts 3 and 4. An engine (not shown) is arranged on the left side of FIG. 1, and a transmission (not shown) is arranged on the right side of FIG. The first input shaft 3 is a cylindrical shaft extending from the transmission side. The tip of the first input shaft 3 extends to near the tip of the crankshaft 2. The second input shaft 4 is a substantially cylindrical shaft extending around the first input shaft 3 from the transmission side. The tip of the second input shaft 4 is located closer to the transmission in the axial direction than the first input shaft 3. A plurality of spline teeth extending in the axial direction are formed on the outer peripheral surfaces of both input shafts 3 and 4.

The clutch device 1 mainly includes a mass body 5, a friction coupling member 6, a first clutch disc assembly 7, a second clutch disc assembly 8, a first clutch operating mechanism 9, And a clutch operation mechanism 10. The mass body 5 is fixed to the tip of the crankshaft 2. The mass body 5 is a member for securing a large moment of inertia on the crankshaft 2 side. The mass body 5 is a disc-shaped member 1
2 and an annular member 13. Disc-shaped member 1
2 has an inner peripheral end fixed to the tip of the crankshaft 2 by a plurality of bolts 15. The bolt 15 is attached from the transmission side in the axial direction. The inner peripheral edge of the disc-shaped member 12 is in contact with the outer peripheral surface of an annular protrusion 2 a formed on the distal end surface of the crankshaft 2. The annular member 13 is fixed to the outer peripheral end of the disk-shaped member 12 in the axial direction of the transmission. The annular member 13 is an inertia member having a large axial thickness. The annular member 13 is fixed to the disk-shaped member 12 by a plurality of bolts 16 arranged in a circumferential direction. The bolt 16 is attached from the engine side in the axial direction. Further, a ring gear 17 for starting the engine is fixed to an outer peripheral edge of the disc-shaped member 12. In addition,
The mass body may be composed of an integral member.

The friction coupling member 6 is a disk-shaped and annular member arranged at an interval on the transmission side of the mass body 5 in the axial direction. The outer diameter of the friction coupling member 6 is substantially equal to the outer diameter of the mass body 5. However, the inner diameter of the friction coupling member 6 is larger than the inner diameter of the mass body 5. The friction coupling member 6 has a first friction surface 6a on the engine side in the axial direction, and has a second friction surface 6b on the transmission side in the axial direction.

A plurality of axial through holes 19 are formed in the portion of the friction coupling member 6 on the outer peripheral side from the friction surfaces 6a and 6b, and are arranged in the circumferential direction. The second clutch cover 71 is a substantially annular member made of sheet metal. Second clutch cover 7
Numeral 1 is fixed to the friction coupling member 6 and a first clutch cover 28 to be integrally rotated by bolts (not shown). The second clutch cover 71 includes a first member 72 and a second member 73. The first member 72 includes an annular portion 74, and a first extension 75 and a second extension 76 extending from the annular portion 74 toward the transmission in the axial direction. The annular portion 74 is in contact with the outer peripheral portion of the friction coupling member 6 in the axial direction. Further, a hole through which the above-mentioned bolt passes is formed in the annular portion 74. As shown in FIGS. 2 and 4, the first extension 75 and the second
The extension portions 76 are formed alternately in the rotation direction. First
The extension 75 extends substantially straight in the axial direction. Further, a second member 73 is fixed to a tip of the first extension portion 75. The second member 73 is a substantially annular member made of a sheet metal member, and includes a substantially cylindrical portion 77 extending from the first extension portion 75 toward the transmission in the axial direction, a disc-shaped portion 78 extending from the distal end to the inner peripheral side, and have. The annular support portion 7 protruding toward the engine in the axial direction is provided on the disc-shaped portion 78.
9 are formed. The second extension 76 is the first extension 75
It extends toward the inner circumference side. Thus, the second extension 76 is located closer to the engine side in the axial direction than the second member 73. Further, a support portion 80 is formed on the second extension portion 76 so as to project toward the engine side in the axial direction.

The first clutch disk assembly 7 is a mechanism for outputting a torque to the first input shaft 3. The first clutch disc assembly 7 includes the first friction coupling portion 2
1 on the outer peripheral side. The first friction connecting portion 21 is disposed near the first friction surface 6 a of the friction connecting member 6, that is, on the engine side of the friction connecting member 6 in the axial direction. Further, the hub 23 of the first clutch disc assembly 7 is in spline engagement with the first input shaft 3.

Next, the first clutch operating mechanism 9 will be described. The first clutch operating mechanism 9 is a mechanism for urging the first friction coupling portion 21 against the friction coupling member 6 and releasing the urging force as necessary. First
The clutch operating mechanism 9 includes a clutch cover assembly 27 and a release mechanism 51. The clutch cover assembly 27 is mounted on the engine side in the axial direction with respect to the friction coupling member 6 and mainly includes an outer peripheral portion 29 of the first clutch cover 28, a first pressure plate 31, and a cone spring 32. Have been.

The first clutch cover 28 is a disk-shaped and annular plate member disposed close to the mass body 5 on the side of the transmission in the axial direction. First clutch cover 2
The outer diameter of 8 is substantially equal to the outer diameter of the annular member 13, but the inner diameter is smaller than the inner diameter of the disk-shaped member 12. The first clutch cover 28 is divided into an outer peripheral portion 29 and an inner peripheral portion 30 at a radially intermediate portion. The outer peripheral side portion 29 is bent so as to protrude toward the engine side in the axial direction, and secures a space between the friction coupling member 6 and the axial direction. The inner peripheral portion 30 is bent so as to protrude toward the transmission in the axial direction, and a space is secured between the inner peripheral portion 30 and the disc-shaped member 12 in the axial direction. The outermost peripheral edge portion 34 of the outer peripheral side portion 29 is fixed to the outer peripheral portion of the friction coupling member 6 by a bolt or the like (not shown). The inner peripheral end of the inner peripheral side portion 30 has a cylindrical portion 35 and a flange 36 extending from the distal end to the inner peripheral side.
It is composed of The outer peripheral surface of the cylindrical portion 35 is in contact with the inner peripheral surface of the annular projection 2a of the crankshaft 2, and the flange 36 is connected to the axial end surface 2b on the inner peripheral side of the annular projection 2a of the crankshaft 2 from the axial transmission side. Abut. As described above, the inner peripheral end of the first clutch cover 28 is positioned in the radial direction and the axial direction with respect to the crankshaft 2. Further, the cylindrical portion 35
A bearing 38 is disposed between the input shaft 3 and the input shaft 3. The bearing 38 is a radial bearing composed of an inner race, an outer race, and a plurality of rolling elements.
The input shaft 3 is rotatably supported by the first clutch cover 28.

The first pressure plate 31 is an annular member arranged on the engine side in the axial direction of the first friction coupling portion 21. The first pressure plate 31 has an annular and flat pressing surface 31 a facing the first frictional connection portion 21. The first pressure plate 31 is fixed to the first clutch cover 28 or the friction coupling member 6 so as to rotate integrally therewith and to be movable in the axial direction by a plate (not shown) or the like.

The cone spring 32 is disposed between the outer peripheral portion 29 and the first pressure plate 31 in the axial direction. An outer peripheral end of the cone spring 32 is supported by an annular support portion 31c of the first pressure plate 31, and an inner peripheral end thereof is supported by an annular support portion 40 formed on the first clutch cover 28. In this state, the cone spring 32 is elastically deformed in the axial direction, thereby applying a force for urging the first pressure plate 31 toward the transmission in the axial direction. The inner peripheral surface of the cone spring 32 is supported by the outer peripheral surface of a cylindrical portion formed on the first clutch cover 28, and is positioned in the radial direction. The type of the urging member is not limited to the cone spring.

The damper mechanism 41 is a mechanism for elastically connecting the first clutch operating mechanism 9 to the crankshaft 2 in the rotational direction. The damper mechanism 41 includes a drive member 43 and an inner peripheral portion 3 of the first clutch cover 28.
0 and a plurality of elastic members 44. The drive member 43 is an annular plate member, and is fixed to the tip of the crankshaft 2 by the plurality of bolts 15 described above. The drive member 43 has an annular portion 43a abutting on the axial transmission side of the inner peripheral end of the disc-shaped member 12, and a plurality of contact portions 43b extending from the outer peripheral edge toward the axial transmission side.

The inner peripheral portion 30 of the first clutch cover 28
Are formed with a plurality of spring holding portions 45 extending in the circumferential direction. The spring holding portion 45 is a protruding portion formed by drawing so as to protrude toward the transmission in the axial direction as compared with other portions, and is recessed toward the engine in the axial direction.
A concave portion 46 whose radial direction is shorter than that of the spring holding portion 45 is formed between the spring holding portions 45 in the circumferential direction.

Each elastic member 44 is a coil spring extending in the circumferential direction, and is accommodated in a spring holding portion 45. Spring seats 47 are arranged at both ends in the circumferential direction of the elastic member 44. The spring seats 47 support both ends in the circumferential direction of each elastic member 44 and
Are in contact with the support surfaces 45a formed on both sides in the radial direction. The spring seat 47 has a support portion that supports the elastic member 44 and a protrusion that extends from the support portion into the coil of the elastic member 44. Here, the contact portion 43 b of the drive member 43 extends into the concave portion 46, and both circumferential ends of the contact portion 43 b contact or approach the back surface of the support portion of the spring seat 47. In this way, the torque of the drive member 43 is transmitted to the first clutch cover 28 via the elastic member 44. Further, the spring holding portion 45
An arc-shaped or annular holding plate 48 is fixed to the outer peripheral side portion by a plurality of rivets 49. The holding plate 48 is configured to support the engine side in the axial direction on the radially outer side of the elastic member 44. As a result, the elastic member 44 is held by the first clutch cover 28, and does not drop off in the axial direction. Further, the contact portion 43b of the drive member 43 can be engaged or disengaged with the held elastic member 44 only by moving in the axial direction. The type of the elastic member is not limited to the coil spring, and the elastic member may be a bent leaf spring formed by bending a plate-like member to form a plurality of spring elements, or another spring or elastic body.

As described above, the first clutch cover 28 constitutes the output side member of the damper mechanism 41 by the inner peripheral portion 30, and the spring support portion of the first clutch operating mechanism 9 by the outer peripheral portion 29. Make up. As described above, by giving one member a plurality of functions, the total number of components is reduced. Furthermore, the first recess is formed in the outer peripheral portion 29 and faces the transmission in the axial direction.
The elastic member 44 and the drive member 43 accommodate the pressure plate 31 and the cone spring 32, and are further provided in a recess formed in the inner peripheral portion 30 and facing the engine in the axial direction.
Further, since the head of the bolt 15 is accommodated, the structure is compact in the radial and axial directions. In particular, a structure in which the elastic member 44 is arranged on the inner peripheral side of the first pressure plate 31 is effective. Here, for example, if the elastic member 44 of the damper mechanism 41 is disposed on the engine side of the first pressure plate 31 in the axial direction, the axial dimension of the entire apparatus becomes large, or the elastic member 44 is provided with the radius of the first pressure plate 31. If it is arranged outward in the direction, the radial dimension of the entire apparatus will be large.

The first clutch cover 28 is made of a thin sheet metal in the axial direction and is elastically deformable in the axial direction. Since the inner peripheral portion of the first clutch cover 28 is supported by the crankshaft 2 and the friction coupling member 6, the first clutch operating mechanism 9, and the second clutch operating mechanism 10 are mounted on the outer peripheral portion, bending vibration from the engine is provided. When the is input, the whole bends in the bending direction to function as a flexible plate that absorbs bending vibration.

The release mechanism 51 mainly includes a release member 52 and a lever member 53. The release member 52 includes a driving member 54 and a support portion forming member 55. The driving member 54, as shown in FIG.
A substantially cylindrical member extending in the axial direction, the annular seating portion 5
8 and a plurality of axial extension portions 59 extending from the seat portion 58 to the axial transmission side. The end of the seat 58 in the axial direction on the engine side is in contact with a groove 31b formed on the outer peripheral edge of the first pressure plate 31 on the axial transmission side. The inner peripheral surface on the distal end side of the seat portion 58 is positioned in the radial direction by contacting the outer peripheral surface of the groove 31b. By providing the annular seating portion 58 in this manner, the posture of the release member 52 with respect to the first pressure plate 31 is stabilized. The axial extension 59 extends axially through the axial through hole 19 of the friction coupling member 6, as shown in FIGS. 1 and 2, and the distal end extends from the axial transmission-side end of the friction coupling member 6. Further protruding. The distal end of the axial extension portion 59 is a bent portion 60 which is bent inward in the radial direction and further extends in the axial direction. The support portion forming member 55 is a member for forming an annular support portion on the release member 52, and is easily detachable from the drive member 54 from the axial transmission. The support portion forming member 55 is a substantially annular sheet metal member, and includes a disc-shaped portion 61 and a tubular portion 62 extending from the outer peripheral end toward the transmission in the axial direction. An annular support portion 64 protruding toward the transmission in the axial direction is formed on the disc-shaped portion 61. The distal end of the cylindrical portion 62 projects to the outer peripheral side of the bent portion 60. In addition, the tubular portion 62 is formed with a bent portion 63 that is cut and bent and abuts on the inner peripheral side of the bent portion 60.
The bent portion 63 is located in the middle of the bent portion 60 in the rotation direction. In this way, the bent portion 60 is sandwiched between the cylindrical portion 62 and the bent portion 63 in the radial direction. It is detachable on the side, but is immovably engaged in the radial and other directions.

The lever member 53 is an annular and disk-shaped plate member. It is preferable that the lever member 53 has almost no elastic function and functions simply as a lever, for example, by slits formed alternately from the inner peripheral edge and the outer peripheral edge of the disc-shaped plate. The outer peripheral portion of the lever member 53 contacts the support portion 64 of the support portion forming member 55 from the axial transmission side, and the inner peripheral portion thereof contacts the support portion 79 of the second clutch cover 71 from the axial engine side. ing. In the above-described structure, when the inner peripheral end of the lever member 53 is moved toward the transmission in the axial direction, the support portion 7 of the second clutch cover 71 is moved.
The outer peripheral end of the lever member 53 pivots toward the engine in the axial direction with the fulcrum 9 as a fulcrum, and moves the release member 52 toward the engine in the axial direction. As a result, the first pressure plate 31
Is the first to overcome the bias from the cone spring 32
It moves away from the friction connection part 21.

The first drive mechanism 84 is a mechanism for performing a clutch release operation with respect to the first clutch disk assembly 7 by driving the lever member 53 of the first clutch operation mechanism 9. The first drive mechanism 84 mainly includes a release bearing 85, a hydraulic cylinder 86, and a first hydraulic circuit 87. The release bearing 85 mainly includes an inner race, an outer race, and a plurality of rolling elements disposed therebetween, and is capable of receiving a radial load and a thrust load. A cylindrical retainer 88 is mounted on the outer race of the release bearing 85. The retainer 88 includes a tubular portion that contacts the outer peripheral surface of the outer race, a first flange that extends radially inward from the axial engine side end of the tubular portion and contacts the axial transmission side surface of the outer race, and a tubular portion. And a second flange extending radially outward from the axial end of the engine. A lever member 53 is provided on the second flange.
An annular support portion is formed at an inner end in the radial direction to abut from the engine side in the axial direction.

The hydraulic cylinder 86 is mainly composed of a hydraulic chamber constituting member 89 and a piston 90. The hydraulic chamber forming member 89 forms a hydraulic chamber between the hydraulic chamber forming member 89 and a cylindrical piston 90 arranged on the inner peripheral side. The hydraulic pressure can be supplied from the first hydraulic circuit 87 into the hydraulic chamber. Piston 90
Is a substantially cylindrical member, the inner peripheral surface of which is supported by a hydraulic cylinder 99 described later. Further, the piston 90 has a flange that comes into contact with the inner race of the release bearing 85 from the transmission side in the axial direction. In this state, when the hydraulic oil in the hydraulic chamber is drained from the first hydraulic circuit 87, the piston 90 moves the release bearing 85 toward the transmission in the axial direction.

The second clutch disk assembly 8 is a mechanism for outputting a torque to the second input shaft 4 of the transmission. The second clutch disc assembly 8 has a second friction coupling portion 22 on the outer peripheral portion. The second friction connecting portion 22 is arranged near the second friction surface 6b of the friction connecting member 6, that is, on the axial transmission side of the friction connecting member 6. Second clutch disc assembly 8
Hub 24 is in spline engagement with the second input shaft 4.

Next, the second clutch operating mechanism 10 (clutch cover assembly) will be described. The second clutch operation mechanism 10 is a mechanism for urging the second friction coupling portion 22 of the second clutch disc assembly 8 against the friction coupling member 6 and releasing the urging. The second clutch operation mechanism 10 mainly includes a second pressure plate 92,
And a diaphragm spring 93. The second pressure plate 92 is an annular member disposed close to the second transmission portion 22 of the second clutch disc assembly 8 on the axial transmission side. The second pressure plate 92 is fixed to the second clutch cover 71 or the friction coupling member 6 so as to rotate integrally therewith and to be movable in the axial direction by a plate (not shown) or the like. The second pressure plate 92 has an annular and flat friction surface 92a on the second friction coupling portion 22 side. The diaphragm spring 93 is a substantially disk-shaped and annular plate member, and has an outer peripheral elastic portion 93a and a plurality of lever portions 93b extending from the inner peripheral end to the inner peripheral side. The outer peripheral end of the elastic portion 93a is supported by the support portion 8 of the second clutch cover 71.
0, and the inner peripheral end is the second pressure plate 92.
Is supported by the support portion 92b. The elastic portion 93 a is compressed in the axial direction, thereby applying a biasing force to the second pressure plate 92 toward the engine in the axial direction. An urging plate 96 is fixed to the transmission side of the second pressure plate 92 in the axial direction by bolts 96a. The urging plate 96 extends from between the plurality of lever portions 93b, abuts against the inner peripheral end of the elastic portion 93a from the transmission side in the axial direction, and urges the second pressure plate 92. As a result, when the inner peripheral end of the lever portion 93b is moved toward the axial transmission, the inner peripheral end of the elastic portion 93a is moved toward the axial transmission, and the urging force on the second pressure plate 92 is released. At the same time, the second pressure plate 92 is moved toward the transmission in the axial direction.

The second drive mechanism 97 is a mechanism for performing a clutch release operation with respect to the second clutch disk assembly 8 by driving the diaphragm spring 93 of the second clutch operation mechanism 10. The second drive mechanism 97 mainly includes a release bearing 98, a hydraulic cylinder 99,
And a second hydraulic circuit 100. The release bearing 98 mainly includes an inner race, an outer race, and a plurality of rolling elements disposed therebetween, and can receive a radial load and a thrust load. A cylindrical retainer 101 is mounted on the outer race of the release bearing 98. Retinaa 10
1 is a cylindrical portion that contacts the outer peripheral portion of the outer race, a first flange extending radially outward from the axial engine side end of the cylindrical portion, and radially inward from the axial transmission side end of the cylindrical portion. A second flange which abuts on an axial transmission side surface of the extended outer race. On the first flange, an annular support portion is formed at the radially inner end of the lever portion 93b so as to abut from the engine side in the axial direction. The hydraulic cylinder 99 includes a piston 102 and a hydraulic chamber component 103. The hydraulic chamber forming member 103 forms a hydraulic chamber between the hydraulic chamber forming member 103 and the piston 102 disposed on the inner peripheral side. The hydraulic pressure can be supplied from the second hydraulic circuit 100 into the hydraulic chamber. Piston 1
Reference numeral 02 denotes a cylindrical member, the inner peripheral surface of which is supported by the outer peripheral surface of a member (not shown) extending from the transmission side. Further, the piston 102 is mounted on the release bearing 9.
8 has a flange that abuts the inner race from the transmission side in the axial direction. In this state the second
When the hydraulic oil in the hydraulic chamber is drained from the hydraulic circuit 100,
The piston 102 moves to the transmission side in the axial direction to move the release bearing 98.

As described above, the first clutch operating mechanism 9 and the second clutch operating mechanism 10 are driven by the independent first and second driving mechanisms 84 and 97, respectively. Further, the clutch cover assembly 2 of the first clutch operating mechanism 9
7, since the urging force on the first pressure plate 31 is given by the cone spring 32 which is a spring member, the friction coupling member 6 and the first clutch cover 28
It is not necessary to form an oil passage or a hydraulic oil chamber in a structure corresponding to the above. Therefore, the overall structure of the clutch device 1 is simplified, the number of parts is reduced, and the overall size can be reduced.

In particular, despite the fact that the second clutch cover 71 is an integral member as a whole, the support portion 79 for the first clutch operating mechanism 9 and the second clutch operating mechanism 1
0, the structure is simple, and the number of parts can be suppressed.
It contributes to space saving. Further, the above-mentioned annular member 13 is disposed further on the outer peripheral side of the outer peripheral side portion 29 of the first clutch cover 28, and secures a sufficient moment of inertia without increasing the axial and radial dimensions of the clutch device 1. ing.

As described above, most parts of the clutch device 1 are directly connected to the crankshaft 2 via the damper mechanism 41. For this reason, the damper mechanism 41
The structure is simple and compact, and the assembling workability is improved. Here, "direct connection" means that the connection is made without any other member such as a flywheel.

Next, the assembling operation of the clutch device 1 will be described. As shown in FIG. 6, as the configuration on the engine side, the mass body 5 and the drive member 43 are fixed in advance to the tip of the crankshaft 2 by bolts 15. Further, the first clutch cover 28 includes an elastic member 44.
Is attached in advance. This is because, before the assembling operation, the elastic member 44 that mainly constitutes the damper mechanism 41 is a part of the clutch device 1, namely, the first clutch cover 2
8 means mounted. For this reason, transportation and storage of the clutch device 1 before assembly are convenient.

From this state, for example, the engine and the crankshaft 2 are moved toward the transmission in the axial direction. Then, the contact portion 43b of the drive member 43 is inserted between the elastic members 44 in the circumferential direction from the transmission side in the axial direction, more specifically, between the spring seats 47. When the axial end face 2b of the crankshaft 2 comes into contact with the flange 36 of the first clutch cover 28, the relative movement of the two in the axial direction stops. As described above, the operation of assembling the clutch device 1 to the crankshaft 2 includes:
It is completed only by moving the members on both sides in the axial direction, and does not require fastening members such as bolts and rivets. In this way, the work of assembling the clutch device 1 is simplified, and the assembling work can be performed in a short time. In short, the assemblability of the clutch device 1 is improved. Second Embodiment FIG. 7 shows a schematic longitudinal sectional view of a clutch device 1 as a second embodiment of the present invention. Since the basic structure of the clutch device 1 is the same as that of the above-described embodiment, only different points will be described here.

The cylindrical portion of the retainer 88 is further formed with an extension 88a extending toward the transmission in the axial direction. Thus, an outer peripheral surface 88b that is long in the axial direction is formed on the retainer 88. The disk-shaped portion 78 of the second clutch cover 71 extends further inward than the above-described embodiment, and forms an inner peripheral side portion 81. The inner diameter of the inner peripheral side portion 81 is substantially equal to the inner diameter of the lever member 53, and is located near the release bearing 85. A plurality of holes 81a are formed in the inner peripheral side portion 81. Further, a cylindrical portion 82 extending toward the engine in the axial direction is formed on the inner peripheral edge of the inner peripheral side portion 81. This cylindrical part 8
A cylindrical member 83 is fixed to the inner peripheral side of 2. The inner peripheral surface of the cylindrical member 83 is supported by the outer peripheral surface 88b of the retainer 88. Here, the second clutch cover 71 is
This is the member arranged closest to the transmission side in an integrated configuration including the clutch cover 28, the friction coupling member 6, and the second clutch cover 71, and this member is supported by another member on the transmission side. As a result, the entire clutch device 1 is less likely to tilt due to bending vibration from the engine, and a resonance phenomenon caused by bending vibration of the engine can be suppressed. Thereby, for example, the plate thickness of the first clutch cover 28 can be reduced.

Further, since the release bearing 85 is used as a member for supporting the inner peripheral end of the second clutch cover 71, no special parts or space for it is required. Further, by attaching the cylindrical member 83 that is long in the axial direction to the inner peripheral side portion 81, the axial contact length between the inner peripheral surface of the second clutch cover 71 and another member can be increased. The clutch cover 71 is less likely to tilt. Further, by using a material having a low coefficient of friction for the cylindrical member 83, the sliding resistance between the contact portions when the release bearing 85 moves in the axial direction can be reduced. Third Embodiment FIG. 8 is a schematic longitudinal sectional view of a clutch device 1 according to a third embodiment of the present invention. The basic structure of the clutch device 1 of the present embodiment is the same as that of the clutch device of the first embodiment, and therefore only different points will be described here.

Although the first and second clutch operating mechanisms have a structure in which the driving mechanism pulls out the lever member or the like toward the transmission in the axial direction, the first and second clutch operating mechanisms perform the clutch release operation. The second clutch operation mechanism has a structure in which the drive mechanism pushes a lever member or the like toward the engine in the axial direction to perform a clutch release operation.

The second extension 7 of the second clutch cover 71 '
Reference numeral 6 'extends further inward than the above-described embodiment, and its tip is bent so as to be wound around the engine in the axial direction. The inner peripheral portion of the elastic portion 93a 'of the diaphragm spring 93' is swingably supported by the distal end of the second extension portion 76 'via a wiring. The outer peripheral portion of the elastic portion 93a 'is in contact with the support portion 92b of the second pressure plate 92.

The retainer 101 ′ provided on the outer race of the release bearing 98 ′ has a cylindrical portion abutting on the outer peripheral surface of the outer race, and a shaft protruding inward from the engine side end of the cylindrical portion in the axial direction on the engine side. It has a first flange abutting on the side of the directional engine and a second flange extending from the cylindrical portion to the outer peripheral side. The second flange is in contact with the inner peripheral end of the diaphragm spring 93 'from the transmission side in the axial direction.

The annular support portion 79 'of the second clutch cover 71' is located on the outer peripheral side compared to the annular support portion 79 of the first embodiment. Further, the annular support portion 64 'of the support portion forming member 55' is located on the inner peripheral side as compared with the annular support portion 64 of the first embodiment. Thereby, the lever member 5
The outer peripheral end of 3 ′ abuts against the annular support portion 79 ′ from the engine side in the axial direction, and the inner peripheral portion thereof is
4 'is in contact with the transmission in the axial direction.

The retainer 88 ′ provided on the outer race of the release bearing 85 ′ has a cylindrical portion abutting on the outer peripheral surface of the outer race, and protrudes inward from the engine side end of the cylindrical portion in the axial direction to the inner peripheral side to form a shaft of the outer race. It has a first flange abutting on the side of the directional engine and a second flange extending from the cylindrical portion to the outer peripheral side. The second flange is in contact with the inner peripheral end of the lever member 53 'from the transmission side in the axial direction.

Further, a friction facing 94 is bonded to the outer circumferential portion 29 of the first clutch cover 28 on the axially engine side of the flat annular portion. The friction facing 94 faces the flat surface of the disk-shaped member 12 in the axial direction. 8, a gap is secured between the friction facing 94 and the disk-shaped member 12 in the axial direction. The friction facing 94 and the disk-shaped member 12 described above form a relative rotation suppressing mechanism 95 for stopping or suppressing the operation with the damper mechanism 41 as necessary.

When the operating oil in the hydraulic chamber of the hydraulic cylinder 86 is supplied by the first hydraulic circuit 87 from the state shown in FIG. 8, the piston 90 moves toward the engine in the axial direction. As a result, the release bearing 85 'is connected to the lever member 5
The inner peripheral end of 3 'is moved toward the engine in the axial direction. The lever member 53 'is connected to the annular support portion 7 of the second clutch cover 71'.
The release member 52 rotates toward the engine side in the axial direction by rotating about the fulcrum 9 '. As a result, the first pressure plate 31 overcomes the urging force of the cone spring 32 and separates from the first frictional connection portion 21. When hydraulic oil is supplied to the hydraulic chamber of the hydraulic cylinder 99 by the second hydraulic circuit 100, the piston 102 moves toward the engine in the axial direction. As a result, the release bearing 98 'moves the inner peripheral end of the diaphragm spring 93' toward the engine in the axial direction. The diaphragm spring 93 'rotates about the second extension 76' of the second clutch cover 71 'as a fulcrum, and the elastic portion 93a'
Away from the transmission in the axial direction. As a result, the second pressure plate 92 is separated from the second frictional connection portion 22 by the urging force of the strap plate.

In one or both clutch release operations, the load acting on the clutch operating mechanisms 9 and 10 on the engine side in the axial direction from the release bearing causes the outer peripheral portion 29 of the first clutch cover 28, particularly the outer peripheral portion 29, to move. It is elastically deformed toward the engine in the axial direction. As a result, in the relative rotation suppressing mechanism 95, the friction facing 9
4 comes into contact with the disk-shaped member 12 and frictionally engages. That is, the first clutch cover 28 frictionally engages with the disk-shaped member 12 to rotate integrally. In other words,
The first clutch cover 28 and the friction coupling member 6 are locked with respect to the crankshaft 2, and the damper mechanism 41 does not operate. Therefore, when passing through the resonance point in the low rotation speed region (for example, the rotation speed of 0 to 500 rpm) at the time of engine start, the clutch is released, so that damage to the damper mechanism 41 and sound / vibration due to resonance are less likely to occur.

Here, since the lock of the damper mechanism 41 utilizes the load from the drive mechanisms 84 'and 97' at the time of clutch release, the structure is simplified. In particular,
Since the relative rotation suppressing mechanism 95 is composed of members such as the disk-shaped member 12 and the first clutch cover 28, it is not necessary to provide a special structure. Here, comparing this embodiment with the first embodiment, the clutch device of this embodiment is a push type in which the clutch is released by pushing the inner peripheral end of the lever member 53 ′ toward the engine in the axial direction. The clutch device of the first embodiment is a pull type in which the clutch is released by pulling the inner peripheral end of the lever member 53 toward the transmission in the axial direction. Here, the difference between the two exists only in the second clutch covers 71, 71 ′, the release mechanisms 51, 51 ′, and the drive mechanisms 84, 84 ′, 97, 97 ′, and the first pressure plate 31 of the first clutch operation mechanism 9. It can be seen that the cone spring 32 is common. In other words, a pull-type clutch device and a push-type clutch device can be manufactured only by changing the clutch cover, the support portion forming member, and the like for the common part.

[0051]

In the clutch device according to the present invention, the structure is simple because the clutch cover is connected to the crankshaft via the damper mechanism. Further, the clutch device can be assembled by approaching the clutch device in the axial direction with respect to the crankshaft. That is, assemblability is improved as compared with the related art.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of a clutch device according to a first embodiment of the present invention.

FIG. 2 is a plan view for explaining a relationship between a second clutch cover and a release mechanism.

FIG. 3 is a side view for explaining a relationship between a second clutch cover and a release mechanism.

FIG. 4 is a partial perspective view of a second clutch cover.

FIG. 5 is a partial rear view of the damper mechanism.

FIG. 6 is a schematic longitudinal sectional view for explaining an assembling operation of the clutch device.

FIG. 7 is a schematic longitudinal sectional view of a clutch device according to a second embodiment of the present invention.

FIG. 8 is a schematic longitudinal sectional view of a clutch device according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Clutch device 2 Crankshaft 3 1st input shaft 4 2nd input shaft 6 Friction connection member 9 1st clutch operating mechanism 10 2nd clutch operating mechanism 28 1st clutch cover 41 Damper mechanism

Claims (7)

[Claims] 1. A clutch device capable of separately performing torque transmission / interruption operations from a crankshaft of an engine to first and second input shafts of a transmission, wherein a first friction on an axial engine side is provided. A friction coupling member having a surface and a second friction surface on the axial transmission side, to which a torque is input from the crankshaft; and a first friction coupling portion disposed close to the first friction surface. A first torque transmitting shaft to the first input shaft;
A second friction coupling portion disposed in close proximity to the second friction surface, the second friction coupling portion being configured to transmit torque to the second input shaft;
A clutch disc assembly, a clutch operation mechanism mounted on the friction coupling member, and capable of separately coupling and disconnecting the first friction coupling portion and the second friction coupling portion to and from the friction coupling member; A damper mechanism for elastically connecting a clutch operating mechanism directly to the crankshaft in a rotational direction. 2. The clutch according to claim 1, wherein said damper mechanism has an elastic member held by one of said crankshaft and said clutch operating mechanism and removably engaged with the other in an axial direction. apparatus. 3. The disk drive according to claim 1, wherein the damper mechanism includes a disk-shaped plate member disposed on the engine side in the axial direction at the tip end of the crankshaft, and the elastic member held at both ends in the circumferential direction and the transmission side in the axial direction by the plate member. 3. The clutch device according to claim 2, further comprising: a member; and a drive member fixed to the crankshaft and having contact portions detachable from the axial direction at both ends in the circumferential direction of the elastic member. 4. 4. The clutch device according to claim 3, wherein said plate member has a holding portion for holding said elastic member on the engine side in the axial direction. 5. The clutch operating mechanism according to claim 1, further comprising: a pressure plate disposed on the engine side in the axial direction of the first clutch disk assembly; and a biasing member for supporting the pressure plate, which is supported by the plate member, toward the clutch disk. The clutch device according to claim 3, further comprising an urging member. 6. The clutch device according to claim 4, wherein said elastic member is disposed on an inner peripheral side of said pressure plate. 7. The clutch device according to claim 3, wherein said plate member has an outer peripheral end fixed to said friction coupling member and an inner peripheral end rotatably supported by said crankshaft. .