JP3961731B2 - Clutch device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a clutch device, and more particularly to a clutch device attached to a crankshaft via an elastic member.
[0002]
[Prior art]
The clutch device is a device for transmitting the power from the engine to the input shaft of the transmission and interrupting the power as necessary. The clutch device mainly includes a friction drive plate to which power is input from a transmission crankshaft, a clutch disk disposed in the vicinity of the friction drive plate, and urges the clutch disk to the friction drive plate as needed. And a clutch cover assembly for releasing the bias of the lever. The clutch cover assembly includes a clutch cover provided to rotate integrally with the friction drive plate, a pressure plate disposed in the clutch cover and disposed close to the clutch disk, and supported by the clutch cover to clutch the pressure plate. And an urging member for urging the disc and the friction drive plate.
[0003]
A damper mechanism for absorbing and attenuating torque fluctuations from the engine is disposed, for example, between the friction drive plate and the engine-side member. The damper mechanism generally includes an input side member fixed to the engine side member, an output side member fixed to the clutch cover assembly side, and an elastic member for elastically connecting the two members in the rotational direction. is doing.
[0004]
[Problems to be solved by the invention]
When the conventional clutch device is assembled, the damper mechanism is previously attached to one of the clutch device and the engine side member. 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 engine-side member with bolts or rivets.
[0005]
Thus, since it is necessary to use fastening members, such as a volt | bolt and a rivet, at the time of the assembly | attachment of a clutch apparatus, the assembly workability | operativity falls.
[0006]
An object of the present invention is to improve the assembly of the clutch device.
[0007]
[Means for Solving the Problems]
The clutch device according to claim 1 is a device for transmitting / cutting off the power from the crankshaft of the engine to the input shaft of the transmission by connecting / disconnecting the clutch disk. The clutch device includes a clutch cover assembly for connecting and releasing the clutch disk, and a damper mechanism for elastically connecting the clutch cover assembly to the crankshaft in the rotational direction. A part of the damper mechanism is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
[0008]
In this clutch device, the structure is simplified because the clutch cover is connected to the crankshaft via a damper mechanism.
[0009]
According to a second aspect of the present invention, in the clutch device according to the first aspect, the damper mechanism includes an elastic member that is held by one of the crankshaft and the clutch cover assembly and is detachably engaged with the other in the axial direction. Have.
[0010]
In this clutch device, the damper mechanism can be assembled by causing the crankshaft and the flywheel to approach each other in the axial direction. That is, the assembling property is improved as compared with the conventional case.
[0011]
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 the axial engine side at the tip of the crankshaft, both circumferential ends and the axial transmission by the plate member. And a drive member fixed to the crankshaft having contact portions that are detachable from the axial direction at both ends in the circumferential direction of the elastic member.
[0012]
In this clutch device, the elastic member is held in advance by the plate member, and when assembled, the contact portion of the drive member is engaged with both ends in the circumferential direction of the elastic member from the axial direction. Thus, the assembling property is improved.
[0013]
According to a fourth aspect of the present invention, in the clutch device according to the third aspect, the plate member has a holding portion for holding the elastic member in the axial direction engine side.
[0014]
In this clutch device, the elastic member cannot be detached from the plate member by the holding portion.
[0015]
According to a fifth aspect of the present invention, the clutch device according to any one of the first to fourth aspects further includes a friction drive plate disposed on the axial transmission side of the clutch disk. The plate member is disposed on the engine side of the clutch disk in the axial direction and is fixed to the friction drive plate.
[0016]
According to a sixth aspect of the present invention, in the clutch device according to the fifth aspect, the clutch cover assembly includes a pressure plate disposed on the axial engine side of the clutch disk, and a plate member that urges the pressure plate toward the clutch disk. It has an urging member to do.
[0017]
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.
[0018]
In the clutch device according to a seventh aspect, in the sixth aspect, the elastic member is disposed on the inner peripheral side of the pressure plate.
[0019]
In this clutch device, since the elastic member is disposed on the inner peripheral side of the pressure plate, the radial dimension can be reduced while suppressing the overall axial dimension.
[0020]
In the clutch device according to an eighth aspect, in any one of the fifth to seventh aspects, the plate member has an outer peripheral end fixed to the friction drive plate and an inner peripheral end rotatably supported by the crankshaft.
[0021]
According to a ninth aspect of the present invention, the clutch device according to the eighth aspect further includes a bearing disposed between the inner peripheral end of the plate member and the input shaft.
[0022]
In this clutch device, the input shaft is supported on the inner peripheral end of the plate member via a bearing.
[0023]
The clutch device according to claim 10 is a device for transmitting / cutting off the power from the crankshaft of the engine to the input shaft of the transmission by connecting / disconnecting the clutch disk. The clutch device includes a friction drive plate and a clutch cover assembly. The friction drive plate is disposed on the axial transmission side of the clutch disk. The clutch cover assembly includes a clutch cover arranged on the axial engine side of the friction drive plate, a pressure plate arranged close to the axial engine side of the clutch disk, and a friction plate that is supported by the clutch cover and frictionally drives the pressure plate. An urging member for urging the plate side and an elastic member that is held on the axial engine side of the clutch cover and receives power from the crankshaft. The inner peripheral portion of the clutch cover is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
[0024]
In the clutch device according to an eleventh aspect, in the tenth aspect, the elastic member is located on the inner peripheral side of the pressure plate.
[0025]
In this clutch device, since the elastic member is disposed on the inner peripheral side of the pressure plate, the radial dimension can be reduced while suppressing the overall axial dimension.
[0026]
According to a twelfth aspect of the present invention, the clutch device according to any one of the first to eleventh aspects further includes a mass body fixed to the crankshaft.
[0027]
In this clutch device, the mass body is directly fixed to the crankshaft, and is not engaged with the flywheel assembly or the damper mechanism. For this reason, the structure is simplified and the overall dimensions can be reduced.
[0028]
In the clutch device according to a thirteenth aspect, in the twelfth aspect, the mass body includes a disk-shaped member whose inner peripheral end is fixed to the crankshaft, and an annular member fixed to the outer peripheral end of the disk-shaped member. Have. In this clutch device, since the annular member is fixed to the outer peripheral end of the disk-shaped member, the axial dimension of the entire device can be shortened while maintaining a sufficient inertia.
[0029]
According to a fourteenth aspect of the present invention, there is provided a flywheel assembly for transmitting and blocking power from an engine crankshaft to an input shaft of a transmission, and includes a flywheel and a damper mechanism. The damper mechanism is a mechanism for elastically connecting the flywheel to the crankshaft in the rotational direction, and includes a drive member directly fixed to the crankshaft and an elastic member driven by the drive member . A part of the flywheel is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
[0030]
The flywheel assembly has a simple structure because the drive member of the damper mechanism is directly fixed to the crankshaft.
[0031]
According to a fifteenth aspect of the present invention, the flywheel assembly according to the fourteenth aspect further includes a mass body that is fixed to the crankshaft and is separate from the drive member .
[0032]
This flywheel assembly has a simple structure because the drive member of the damper mechanism is fixed to the crankshaft without passing through the mass body.
[0033]
A flywheel assembly according to a sixteenth aspect of the present invention is the flywheel assembly according to the fifteenth aspect, further comprising a bolt for fixing the drive member and the mass body to the crankshaft.
[0034]
The flywheel assembly according to claim 17 is the flywheel assembly according to claim 15 or 16, wherein the mass body is provided on a disk-shaped member having an inner peripheral portion fixed to the crankshaft and an outer peripheral portion of the disk-shaped member. And an annular member.
[0035]
The flywheel assembly according to claim 18 is for transmitting / blocking power from an engine crankshaft to an input shaft of a transmission, and includes a flywheel body , a plate member, and a damper mechanism. ing. The plate member is fixed to the flywheel body . The damper mechanism is a mechanism for elastically connecting the flywheel body to the crankshaft in the rotational direction, and has an elastic member that is held on the plate member so as not to fall off. The inner peripheral portion of the plate member is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
[0036]
In this flywheel assembly, since the elastic member of the damper mechanism is held on the plate member so as not to fall off, the flywheel assembly can be easily managed and transported.
[0037]
According to a nineteenth aspect of the present invention, in the flywheel assembly according to the eighteenth aspect, the plate member has an elastic member holding portion opened on the crankshaft side.
[0038]
In this flywheel assembly, the elastic member is accessible from the crankshaft side.
[0039]
A flywheel assembly according to claim 20 is the drive member according to claim 18 or 19, which is fixed to the crankshaft and is detachably engaged in the axial direction with respect to the rotational direction end of the elastic member of the damper mechanism. Is further provided.
[0040]
In this flywheel assembly, since the drive member is detachable in the axial direction with respect to the elastic member, the flywheel assembly, the plate member, and the damper mechanism are assembled only by moving in the axial direction with respect to the drive member. be able to.
[0041]
The flywheel assembly according to claim 21 is the flywheel assembly according to claims 18 to 20, wherein the drive member is a plate.
[0042]
This flywheel assembly has a simple structure because the drive member is a plate.
[0043]
In a flywheel assembly according to a twenty-second aspect, in the twentieth or twenty-first aspect, the drive member has a plurality of abutting portions that extend in the axial direction and engage with rotation direction ends of the elastic member.
[0044]
A flywheel assembly according to a twenty-third aspect of the present invention is the flywheel assembly according to any one of the twenty-second to twenty-second aspects, further including a mass body that is fixed to the crankshaft and separate from the drive member.
[0045]
DETAILED DESCRIPTION OF THE INVENTION
First Embodiment FIG. 1 is a schematic longitudinal sectional view of a clutch device 1 as a first embodiment of the present invention. The clutch device 1 is a device for transmitting and interrupting torque from the crankshaft 2 of the engine to the input shaft 3 of the transmission. 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.
[0046]
The clutch device 1 mainly includes a mass body 5, a clutch disc assembly 7, a clutch cover assembly 8 (flywheel), and a release mechanism 10. The clutch cover assembly 8 is an example of a flywheel. Further, the part other than the clutch cover 28 of the clutch cover assembly 8 is an example of a flywheel body.
[0047]
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 includes a disk-shaped member 12 and an annular member 13. The disc-like member 12 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 axial transmission side. The inner peripheral edge of the disk-shaped member 12 is in contact with the outer peripheral surface of the annular projecting portion 2 a formed on the tip surface of the crankshaft 2. The annular member 13 is fixed to the outer peripheral end axial transmission side of the disc-like member 12. The annular member 13 is an inertia member having a large axial thickness. The annular member 13 is fixed to the disc-like member 12 by a plurality of bolts 16 arranged in the circumferential direction. The bolt 16 is attached from the axial direction engine side. Further, an engine starting ring gear 17 is fixed to the outer peripheral edge of the disk-shaped member 12. In addition, the mass body may be comprised from the integral member.
[0048]
The friction drive plate 23 is a disk-like and annular member disposed at a distance from the mass body 5 on the axial transmission side. The outer diameter of the friction drive plate 23 is substantially equal to the outer diameter of the annular member 13. However, the inner diameter of the friction drive plate 23 is smaller than the inner diameter of the annular member 13 and larger than the inner diameter of the disk-shaped member 12. The friction drive plate 23 has an annular and flat friction surface 25 on the axial engine side. Further, a plurality of axial through holes 26 are formed in the outer peripheral portion of the friction drive plate 23 from the friction surface 25 side by side in the circumferential direction.
[0049]
The clutch disk assembly 7 is mainly composed of a clutch disk 82, a connecting plate 83, and a hub 85. The clutch disk 82 is composed of a plate and a pair of friction facings provided on both sides of the plate. The clutch disk 82 is disposed close to the friction surface 25 of the friction drive plate 23. The connecting plate 83 is an annular and disk-shaped plate member, and is disposed close to the axial transmission side of the inner peripheral side portion 33 of the clutch cover 28 described later. The outer peripheral portion of the connecting plate 83 is fixed to the plate of the clutch disk 82 by a rivet or the like (not shown). In addition, the inner peripheral portion of the connecting plate 83 is fixed to the flange of the hub 85 by a plurality of rivets 84. A spline hole that engages with the input shaft 3 is formed on the inner peripheral surface of the hub 85.
[0050]
Next, the clutch cover assembly 8 will be described. The clutch cover assembly 8 is mainly composed of an outer peripheral side portion 32 of the clutch cover 28 attached to the axial engine side with respect to the friction drive plate 23, a pressure plate 51, and a cone spring 52.
[0051]
The clutch cover 28 (plate member) is a disk-like and annular plate member that is disposed close to the mass body 5 on the axial transmission side. The outer diameter of the clutch cover 28 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 clutch cover 28 is divided into an outer peripheral side portion 32 and an inner peripheral side portion 33 at the middle in the radial direction. The outer peripheral side portion 32 is bent so as to protrude substantially in the axial direction engine side, and a space is secured between the friction drive plate 23 and the axial direction. Further, the inner peripheral side portion 33 is bent so as to protrude toward the axial transmission side, and a space is secured between the disc-shaped member 12 and the axial direction. The outermost peripheral portion 34 of the outer peripheral side portion 32 is fixed to the outer peripheral portion of the friction drive plate 23 by a bolt or the like (not shown). The inner peripheral end of the inner peripheral portion 33 is composed of a cylindrical portion 37 and a flange 38 extending from the tip to the inner peripheral side. The outer peripheral surface of the cylindrical portion 37 is in contact with the inner peripheral surface of the annular protrusion 2a of the crankshaft 2, and the flange 38 is connected to the axial end surface 2b on the inner periphery side of the annular protrusion 2a in the crankshaft 2 from the axial transmission side. It is in contact. Thus, the inner peripheral end of the clutch cover 28 is positioned in the radial direction and the axial direction with respect to the crankshaft 2. Further, a bearing 39 is disposed between the cylindrical portion 37 and the input shaft 3. The bearing 39 is a radial bearing composed of an inner race, an outer race, and a plurality of rolling elements, and supports the input shaft 3 rotatably with respect to the clutch cover 28.
[0052]
The pressure plate 51 is an annular member arranged on the engine side of the clutch disk 82 in the axial direction. The pressure plate 51 has an annular flat pressing surface 51 a that faces the clutch disk 82.
[0053]
The cone spring 52 (biasing member) is disposed between the outer peripheral side portion 32 and the pressure plate 51 in the axial direction. The outer peripheral end of the cone spring 52 is supported by an annular protrusion 51 b of the pressure plate 51, and the inner peripheral end thereof is supported by an annular protrusion 35 formed on the clutch cover 28. In this state, the cone spring 52 is elastically deformed in the axial direction, thereby applying a force for urging the pressure plate 51 toward the axial transmission side. Further, the inner peripheral surface of the cone spring 52 is supported by the outer peripheral surface of a cylindrical portion formed on the clutch cover 28, and is positioned in the radial direction. The type of the urging member is not limited to the cone spring.
[0054]
The damper mechanism 24 is a mechanism for elastically connecting the clutch cover assembly 8 to the crankshaft 2 in the rotational direction. The damper mechanism 24 includes a drive member 29, an inner peripheral side portion 33 of the clutch cover 28, and a plurality of elastic members 30.
[0055]
The drive member 29 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 29 has an annular portion that contacts the axial transmission side of the inner peripheral end of the disk-shaped member 12 and a plurality of contact portions 46 that extend from the outer periphery to the axial transmission side.
[0056]
A plurality of spring holding portions 36 extending in the circumferential direction are formed on the inner peripheral side portion 33 of the clutch cover 28. The spring holding portion 36 is a protruding portion formed by drawing so as to protrude toward the axial transmission side as compared with other portions, and is recessed toward the axial engine side. A concave portion 41 having a shorter radial direction than the spring holding portion 36 is formed between the circumferential directions of the spring holding portions 36.
[0057]
Each elastic member 30 is a coil spring that extends long in the circumferential direction, and is accommodated in the spring holding portion 36. Spring sheets 43 are disposed at both ends in the circumferential direction of the elastic member 30, and the spring sheets 43 support both ends in the circumferential direction of each elastic member 30 and support surfaces 42 formed on both sides in the radial direction of the recess 41. It is in contact. The spring seat 43 has a support portion that supports the elastic member 30 and a protrusion that extends from the support portion into the coil of the elastic member 30. Here, the contact portion 46 of the drive member 29 described above extends into the recess 41, and both circumferential ends thereof are in contact with or close to the back surface of the support portion of the spring seat 43. In this way, the torque of the drive member 29 is transmitted to the clutch cover 28 via the elastic member 30. Further, an arc-shaped or annular holding plate 48 is fixed to the outer peripheral side portion of the spring holding portion 36 by a plurality of rivets 49. The holding plate 48 supports the axial engine side on the radially outer side of the elastic member 30. As a result, the elastic member 30 is held by the clutch cover 28 so that it does not fall off in the axial direction. Further, the contact portion 46 of the drive member 29 can be engaged or disengaged only by movement in the axial direction with respect to the held elastic member 30. In addition, the kind of elastic member is not limited to a coil spring, The bending plate spring which bent the plate-shaped member and formed the some spring element may be sufficient.
[0058]
As described above, the clutch cover 28 constitutes the output side member of the damper mechanism 24 by the inner peripheral side portion 33, and constitutes the spring support portion of the clutch cover assembly 8 by the outer peripheral side portion 32. Thus, the number of parts as a whole is reduced by giving a plurality of functions to one member. Further, the pressure plate 51 and the cone spring 52 are accommodated in a concave portion formed in the outer peripheral side portion 32 facing the axial transmission side, and further elastic in a concave portion formed in the inner peripheral side portion 33 facing the axial engine side. Since the member 30, the drive member 29 and the head of the bolt 15 are accommodated, the structure is compact in the radial direction and the axial direction. In particular, a structure in which the elastic member 30 is disposed on the inner peripheral side of the pressure plate 51 is effective. Here, for example, if the elastic member 30 of the damper mechanism 24 is disposed on the axial engine side of the pressure plate 51, the axial dimension of the entire apparatus increases, or if the elastic member 30 is disposed on the radially outer side of the pressure plate 51. The radial dimension of the entire device becomes large.
[0059]
Further, the above-described annular member 13 is disposed further on the outer peripheral side of the outer peripheral side portion 32 of the clutch cover 28, and ensures a sufficient moment of inertia without increasing the axial and radial dimensions of the clutch device 1. .
[0060]
As described above, the clutch cover assembly 8 is directly connected to the crankshaft 2 via the damper mechanism 24. For this reason, the structure of the damper mechanism 24 is simple and compact, and the assembly workability is improved.
[0061]
Next, the release mechanism 10 will be described. The release mechanism 10 mainly includes a cover assembly 54 and a drive mechanism 55. The cover assembly 54 is attached to the axial transmission side of the friction drive plate 23. That is, the cover assembly 54 is disposed on the side opposite to the clutch cover assembly 8 with respect to the friction drive plate 23. The cover assembly 54 is a mechanism for releasing the clutch connection by transmitting a load from a drive mechanism 55 described later to the pressure plate 51. The cover assembly 54 includes a cover member 57, a release member 58, and a lever member 59.
[0062]
The cover member 57 is an annular plate member, and includes an outer peripheral portion 57a that contacts the outer peripheral side surface of the friction drive plate 23, a cylindrical portion 57b that extends from the inner peripheral edge of the outer peripheral portion 57a to the axial transmission side, and a cylindrical portion 57b. And an inner peripheral portion 57c extending from the tip toward the inner peripheral side. The inner peripheral portion 57c is disposed away from the axial transmission side surface of the friction drive plate 23 in the axial direction. The outer peripheral portion 57a is fixed to the outer peripheral portion of the friction drive plate 23 by a bolt or the like (not shown). An annular protrusion 68 extending toward the axial engine side is formed on the inner peripheral side portion 57c.
[0063]
The release member 58 includes a drive member 60 and a support portion forming member 61 extending in the axial direction. As shown in FIG. 2, the drive member 60 is a substantially cylindrical member, and includes a ring-shaped seat 62 and a plurality of axial extensions 63 extending from the seat 62 to the axial transmission side. The axial engine side end of the seat 62 is in contact with a groove 51 c formed on the outer peripheral edge of the pressure plate 51 on the axial transmission side. Further, the inner peripheral surface on the front end side of the seating portion 62 abuts on the outer peripheral surface of the groove 51c and is positioned in the radial direction. In this manner, the posture of the driving member 60 relative to the pressure plate 51 is stabilized by the annular seating portion 62. As shown in FIGS. 1 and 2, the axial extension 63 passes through the axial through hole 26 of the friction drive plate 23 in the axial direction, and the tip is further from the side of the axial transmission of the friction drive plate 23. It protrudes. The tip of the axial extension 63 is a bent portion 64 that is bent radially inward and further extends in the axial direction.
[0064]
The support portion forming member 61 is a member for forming an annular support portion on the drive member 60, and can be easily attached to and detached from the drive member 60 from the axial transmission side. The support portion forming member 61 is a generally annular plate member, and includes a disc-shaped portion 93 and a cylindrical portion 94 that extends from the outer peripheral end to the axial transmission side. The disc-shaped portion 93 is formed with an annular projecting portion 67 projecting toward the axial transmission side. The annular protrusion 67 is arranged on the outer peripheral side of the annular protrusion. The tip of the cylindrical portion 94 is in contact with the outer peripheral side of the bent portion 64. Further, the cylindrical portion 94 has a bent portion 66 that is cut and bent and abuts on the inner peripheral side of the bent portion 64. The bent portion 66 is located in the middle in the circumferential direction of the bent portion 64. In this manner, the bent portion 64 is sandwiched between the radial direction of the tubular portion 94 and the bent portion 66, and the support portion forming member 61 is axially and radially oriented with respect to the tip of each axially extending portion 63. It is immovably engaged.
[0065]
The lever member 59 is an annular and disk-shaped plate member. The outer peripheral portion of the lever member 59 is disposed close to the axial engine side of the inner peripheral side portion 57 c of the cover member 57. The outer peripheral end of the lever member 59 is in contact with the annular protrusion 67 of the support forming member 61 from the axial transmission side, and the inner peripheral portion is in contact with the annular protrusion 68 of the cover member 57 from the axial engine side. ing. For example, the lever member 59 may be configured to function only as a lever with almost no elastic function by a slit formed alternately from the inner peripheral edge and the outer peripheral edge in a disk-shaped plate. In the structure described above, when the inner peripheral end of the lever member 59 moves to the axial transmission side, the outer peripheral end of the lever member 59 rotates to the axial engine side with the annular protrusion 68 of the cover member 57 as a fulcrum. The release member 58 is moved to the axial direction engine side. As a result, the pressure plate 51 overcomes the urging force from the cone spring 52 and moves away from the clutch disk 82.
[0066]
The drive mechanism 55 is a mechanism for performing a clutch release operation by driving the lever member 59. The drive mechanism 55 is mainly composed of a release bearing 69, a hydraulic cylinder 70, and a hydraulic circuit 71. The release bearing 69 is mainly composed of 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 member 72 is attached to the outer race of the release bearing 69. The cylindrical member 72 includes a cylindrical portion 73 that abuts the outer circumferential surface of the outer race, a first flange 74 that extends radially outward from the axial engine side end of the cylindrical portion 73, and the axial transmission side of the cylindrical portion 73. A second flange 75 extending radially inward from the end and abutting against an axial transmission side surface of the outer race. The first flange 74 is in contact with the radially inner end of the lever member 59 from the axial engine side.
[0067]
The hydraulic cylinder 70 is mainly composed of a hydraulic chamber constituting member 76 and a piston 77. The hydraulic chamber constituting member 76 constitutes a hydraulic chamber 79 between the hydraulic chamber constituting member 76 and the piston 77 disposed on the inner peripheral side thereof. The hydraulic pressure can be supplied from the hydraulic circuit 71 into the hydraulic chamber 79. The piston 77 is a cylindrical member, and an inner peripheral surface thereof is supported by an outer peripheral surface of a cylindrical shaft 80 extending from the transmission side. Further, the piston 77 has a flange 78 that comes into contact with the inner race of the release bearing 69 from the axial engine side. In this state, when hydraulic pressure is supplied from the hydraulic circuit 71 into the hydraulic chamber 79, the piston 77 moves to the axial transmission side and moves the release bearing 69.
[0068]
Next, the assembly operation of the clutch device 1 will be described. As shown in FIG. 4, as a configuration on the engine side, the mass body 5 and the drive member 29 are fixed in advance to the tip of the crankshaft 2 by bolts 15. An elastic member 30 is attached to the clutch cover 28 in advance. This means that the elastic member 30 mainly constituting the damper mechanism 24 is attached to a part of the clutch cover assembly 8, that is, the clutch cover 28 in advance before the assembling operation. For this reason, transportation and storage of the clutch cover assembly 8 and the elastic member 30 before assembly are convenient.
[0069]
From this state, for example, the engine and the crankshaft are moved to the axial transmission side. Then, the contact part 46 of the drive member 29 is inserted between the circumferential direction of each elastic member 30 from the axial direction transmission side, more specifically, between the spring seats 43. When the axial end surface 2b of the crankshaft 2 comes into contact with the flange 38 of the clutch cover 28, the relative movement of both of them stops. As described above, the assembling operation of the crankshaft 2 and the clutch cover assembly 8 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. Thus, the work at the time of assembling the clutch device 1 is simplified, and the assembling work can be performed in a short time. In short, the assembling property of the clutch device 1 is improved.
Second Embodiment FIGS. 5 and 6 show schematic longitudinal sectional views of a clutch device 1 according to a second embodiment of the present invention. Since the basic structure of the clutch device 1 is the same as that of the above embodiment, only different points will be described here.
[0070]
The tubular portion 73 of the tubular member 72 is further formed with an extension portion 87 extending toward the axial transmission side. Thereby, the cylindrical member 72 has an outer peripheral surface 91 that is long in the axial direction.
[0071]
The inner peripheral side portion 57c of the cover member 57 extends further to the inner peripheral side than the above embodiment, and forms an inner peripheral extension portion 88. Thereby, the inner diameter of the inner peripheral side portion 57 c is substantially equal to the inner diameter of the lever member 59 and is located in the vicinity of the release bearing 69. A plurality of holes 88a are formed in the inner peripheral side extension portion 88 formed in the inner peripheral side portion 57c. Furthermore, a cylindrical portion 89 extending toward the axial engine side is formed on the inner peripheral edge of the inner peripheral extension 88. A tubular member 90 is fixed to the inner peripheral side of the tubular portion 89. The inner peripheral surface of the cylindrical member 90 is supported by the outer peripheral surface 91 of the extension portion 87. Here, the cover member 57 is a member that is disposed on the most transmission side in the integrated configuration including the clutch cover assembly 8, the friction drive plate 23, and the cover assembly 54, and that member is supported by other members on the transmission side. Will be. As a result, the entire clutch device 1 is less likely to tilt due to bending vibration from the engine, and the resonance phenomenon that occurs due to bending vibration of the engine can be suppressed. Thereby, the plate | board thickness of the clutch cover 28 can be made small.
[0072]
The clutch cover 28 is a member that is disposed on the most engine side in the integral configuration including the clutch cover assembly 8, the friction drive plate 23, and the cover assembly 54, and the inner peripheral end thereof is supported by the crankshaft 2. As a result, the clutch device 1 is supported on both sides in the axial direction. As a result, resonance phenomenon is less likely to occur with respect to bending vibration from the engine side.
[0073]
Further, since the release bearing 69 is used as a member for supporting the inner peripheral end of the cover member 57, a special part and a space for it are unnecessary. In other words, the cylindrical member 72 has a first flange 74 for driving the lever member 59 and an extension 87 for supporting the cover member 57. Furthermore, by using the cylindrical member 90 that is long in the axial direction on the inner peripheral extension 88 side, the axial contact length between the inner peripheral surface of the cover member 57 and another member can be increased, and the cover member 57 is more difficult to tilt. Further, by using a material having a low coefficient of friction for the cylindrical member 90, the sliding resistance between the contact portions can be reduced when the release bearing 69 moves in the axial direction.
Third Embodiment FIGS. 7 and 8 show schematic longitudinal sectional views of a clutch device according to a third embodiment of the present invention. Since the basic structure of the clutch device 1 of this embodiment is the same as that of the first embodiment, only different points will be described here.
[0074]
The annular protrusion 68 ′ of the cover member 57 ′ is located on the outer peripheral side compared to the annular protrusion 68 of the first embodiment. Further, the annular protrusion 67 ′ of the support portion forming member 61 ′ is located on the inner peripheral side as compared with the annular protrusion 67 of the first embodiment. As a result, the outer peripheral end of the lever member 59 ′ comes into contact with the annular protrusion 68 ′ from the axial engine side, and its inner peripheral portion comes into contact with the annular protrusion 67 ′ from the axial transmission side. Yes. A cylindrical member 72 ′ provided on the outer race of the release bearing 69 ′ has a cylindrical portion 73 ′ that abuts on the outer peripheral surface of the outer race, and projects from the axial engine side end of the cylindrical portion 73 ′ toward the inner peripheral side. It has a second flange 75 'that abuts the side surface of the race's axial engine, and a first flange 74' that extends from the axial transmission end of the tubular portion 73 'to the outer peripheral side. The first flange 74 'is in contact with the inner peripheral end of the lever member 59' from the axial transmission side.
[0075]
The clutch cover 28 is made of a thin metal plate in the axial direction, and can be elastically deformed in the axial direction. Further, a friction facing 99 is bonded to the axially engine side of the flat annular portion 32 a in the outer peripheral side portion 32 of the clutch cover 28. The friction facing 99 faces the flat surface of the disk-shaped member 12 in the axial direction. In the clutch engaged state shown in FIG. 7, a gap is secured between the axial direction of the friction facing 99 and the disc-like member 12.
[0076]
When the hydraulic fluid in the hydraulic chamber 79 is drained by the hydraulic circuit 71 from the state shown in FIG. 7, the piston 77 moves to the axial direction engine side. Accordingly, the release bearing 69 ′ moves the inner peripheral end of the lever member 59 ′ to the axial direction engine side. The lever member 59 ′ rotates with the annular protrusion 68 ′ of the cover member 57 ′ as a fulcrum, and moves the release member 58 toward the axial engine side. As a result, the pressure plate 51 overcomes the urging force of the cone spring 52 and moves away from the clutch disk 82. At this time, the outer peripheral side portion 32 of the clutch cover 28 is elastically deformed to the axial engine side by a load acting on the clutch cover assembly 8 from the release bearing 69 'on the axial engine side. As a result, the friction facing 99 comes into contact with the disk-like member 12 and is frictionally engaged. That is, the clutch cover 28 that is an output side member of the damper mechanism 24 frictionally engages with the disk-like member 12 that rotates integrally with the crankshaft 2 and rotates integrally. In other words, the clutch cover 28 and the friction drive plate 23 are locked with respect to the crankshaft 2, and the damper mechanism 24 does not operate. Therefore, when the resonance point is passed in the low rotation speed region (for example, the rotation speed of 0 to 500 rpm) at the time of starting the engine, the damper mechanism 24 is not easily damaged and sound / vibration is not caused by the resonance.
[0077]
The structure and operation described above will be described together. In the clutch device 1, when the release mechanism 10 releases the clutch by applying a load to the clutch cover assembly 8, the clutch cover is utilized using the load. 28 friction facings 99 are frictionally engaged with the disk-shaped member 12. Here, the structure of the damper mechanism 24 is simplified because the lock of the damper mechanism 24 uses the load from the release mechanism 10 at the time of clutch release. In particular, since the lock mechanism is made of conventional members such as the disk-shaped member 12 and the clutch cover 28, it is not necessary to provide a special structure.
[0078]
Here, comparing this embodiment with the first embodiment, the clutch device of this embodiment is a push type that releases the clutch by pushing the inner peripheral end of the lever member 59 ′ toward the axial direction engine side. The clutch device of the first embodiment is a pull type that releases the clutch by pulling the inner peripheral end of the lever member 59 toward the axial transmission side. Here, the difference between them exists only in the release mechanism 10 such as the cover assembly 54 and the drive mechanism 55, and it can be seen that the pressure plate 51 and the cone spring 52 of the clutch cover assembly 8 are common. In other words, a pull-type clutch device and a push-type clutch device can be manufactured simply by changing the cover member, the support portion forming member, and the like for the common portion. Here, in the release member 58, the drive member 60 is a common part and does not need to be replaced. Therefore, all the different members can be attached from the axial transmission side, and workability is good.
Fourth Embodiment FIGS. 9 and 10 are schematic longitudinal sectional views of a clutch device 1 as a fourth embodiment of the present invention. Since the basic structure of the clutch device 1 of this embodiment is the same as that of the third embodiment, only different points will be described in detail.
[0079]
The tubular portion 73 ′ of the tubular member 72 ′ is further formed with an extended portion 87 ′ extending toward the axial transmission side. As a result, an outer peripheral surface 91 ′ that is long in the axial direction is formed on the cylindrical member 72 ′.
[0080]
An inner peripheral side portion 57c ′ of the cover member 57 ′ extends further to the inner peripheral side than the above embodiment, and forms an inner peripheral extension portion 88 ′. Accordingly, the inner diameter of the inner peripheral side portion 57c ′ is substantially equal to the inner diameter of the lever member 59 ′, and is positioned in the vicinity of the release bearing 69. A plurality of holes 88a ′ are formed in the inner peripheral extension 88 ′. Further, a cylindrical portion 89 ′ extending toward the axial transmission side is formed on the inner peripheral edge of the inner peripheral extension 88 ′. A cylindrical member 90 ′ is fixed to the inner peripheral side of the cylindrical portion 89 ′. The inner peripheral surface of the cylindrical member 90 ′ is supported by the outer peripheral surface 91 ′ of the extension portion 87 ′. Here, the cover member 57 ′ is a member that is disposed on the most transmission side in the integrated configuration including the clutch cover assembly 8, the friction drive plate 23, and the cover assembly 54, and that member is formed by other members on the transmission side. It will be supported. As a result, the entire clutch device 1 is less likely to tilt due to bending vibration from the engine, and the resonance phenomenon that occurs due to bending vibration of the engine can be suppressed. Thereby, the plate | board thickness of the clutch cover 28 can be made small.
[0081]
The clutch cover 28 is a member that is disposed on the most engine side in the integral configuration including the clutch cover assembly 8, the friction drive plate 23, and the cover assembly 54, and the inner peripheral end thereof is supported by the crankshaft 2. As a result, the clutch device 1 is supported on both sides in the axial direction. Therefore, the resonance phenomenon is less likely to occur with respect to the bending vibration from the engine side.
[0082]
Further, since the release bearing 69 is used as a member for supporting the inner peripheral end of the cover member 57 ′, a special part and a space for it are unnecessary. In other words, the cylindrical member 72 ′ has a first flange 74 ′ for driving the lever member 59 ′ and an extension 87 ′ for supporting the cover member 57 ′. Furthermore, by using the cylindrical member 90 ′ that is long in the axial direction on the inner peripheral extension 88 side, the axial contact length between the inner peripheral surface of the cover member 57 ′ and other members can be increased. The cover member 57 ′ is more difficult to tilt. Further, by using a material having a low coefficient of friction for the cylindrical member 90 ', the sliding resistance between the contact portions can be reduced when the release bearing 69 moves in the axial direction.
[Modification]
The present invention is not limited to the embodiment. The present invention provides another type of clutch device, for example, a clutch device in which the clutch cover assembly is disposed on the axial transmission side of the friction plate, or another clutch cover assembly provided on both axial sides of the friction drive plate. It can also be used in clutch devices that enable output.
[0083]
【The invention's effect】
In the clutch device according to the present invention, the damper mechanism can be assembled by causing the crankshaft and the flywheel to approach each other in the axial direction. That is, the assembling property is improved as compared with the conventional case.
[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 partial side view for explaining a release member.
FIG. 3 is a partial plan view for explaining a damper mechanism.
FIG. 4 is a schematic vertical cross-sectional view for explaining a flywheel assembling operation.
FIG. 5 is a schematic longitudinal sectional view of a clutch device according to a second embodiment of the present invention.
FIG. 6 is a schematic longitudinal sectional view for explaining the flywheel assembling operation.
FIG. 7 is a schematic longitudinal sectional view of a clutch device according to a third embodiment of the present invention.
FIG. 8 is a schematic vertical sectional view for explaining the flywheel assembling operation.
FIG. 9 is a schematic longitudinal sectional view of a clutch device according to a fourth embodiment of the present invention.
FIG. 10 is a schematic longitudinal sectional view for explaining the flywheel assembling operation.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Clutch apparatus 2 Crankshaft 3 Input shaft 5 Mass body 7 Clutch disc assembly 8 Clutch cover assembly 10 Release mechanism 23 Friction drive plate 28 Clutch cover 29 Drive member 30 Elastic member 51 Pressure plate 52 Cone spring

Claims (23)

A clutch device for transmitting / cutting power from an engine crankshaft to an input shaft of a transmission by connecting / disconnecting a clutch disc,
A clutch cover assembly for connecting and releasing the clutch disk;
A damper mechanism for elastically connecting the clutch cover assembly to the crankshaft in a rotational direction,
A part of the damper mechanism is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
Clutch device.   The clutch device according to claim 1, wherein the damper mechanism includes an elastic member that is held by one of the crankshaft and the clutch cover assembly and is detachably engaged with the other in the axial direction.   The damper mechanism includes a disk-like plate member disposed on the axial engine side at the tip of the crankshaft, the elastic member held at both ends in the circumferential direction and the axial transmission side by the plate member, and the elastic member. The clutch device according to claim 2, further comprising a contact member that has a contact portion that is detachable from the axial direction at both ends in a circumferential direction of the member and is fixed to the crankshaft.   The clutch device according to claim 3, wherein the plate member has a holding portion for holding the engine side of the elastic member in the axial direction. A friction drive plate disposed on the axial transmission side of the clutch disc;
The clutch device according to any one of claims 1 to 4, wherein the plate member is disposed on an axial engine side of the clutch disk and is fixed to the friction drive plate. The clutch cover assembly comprises a pressure plate arranged axially engine side of the clutch disc, a biasing member for being supported by the plate member to urge the pressure plate to the clutch disk side The clutch device according to claim 5.   The clutch device according to claim 6, wherein the elastic member is disposed on an inner peripheral side of the pressure plate.   The clutch device according to any one of claims 5 to 7, wherein an outer peripheral end of the plate member is fixed to the friction drive plate, and an inner peripheral end is rotatably supported by the crankshaft.   The clutch device according to claim 8, further comprising a bearing disposed between an inner peripheral end of the plate member and the input shaft. A clutch device for transmitting / cutting power from an engine crankshaft to an input shaft of a transmission by connecting / disconnecting a clutch disc,
A friction drive plate disposed on the axial transmission side of the clutch disk;
A clutch cover fixed to the axial engine side of the friction drive plate;
A pressure plate disposed close to the engine side of the clutch disk in the axial direction; a biasing member supported by the clutch cover for biasing the pressure plate toward the friction drive plate; and a shaft of the clutch cover A clutch cover assembly having an elastic member that is held on the direction engine side and receives power from the crankshaft,
An inner peripheral portion of the clutch cover is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction. ,
Clutch device.   The clutch device according to claim 10, wherein the elastic member is located on an inner peripheral side of the pressure plate.   The clutch device according to claim 1, further comprising a mass body fixed to the crankshaft.   The clutch device according to claim 12, wherein the mass body includes a disk-shaped member whose inner peripheral end is fixed to the crankshaft, and an annular member fixed to the outer peripheral end of the disk-shaped member. . A flywheel assembly for transmitting / blocking power from an engine crankshaft to an input shaft of a transmission,
With flywheel,
A damper mechanism for elastically connecting the flywheel to the crankshaft in a rotational direction, and a damper mechanism having a drive member directly fixed to the crankshaft and an elastic member driven by the drive member ; With
A part of the flywheel is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction.
Flywheel assembly. The flywheel assembly according to claim 14, further comprising a mass body fixed to the crankshaft and separate from the drive member . The flywheel assembly according to claim 15, further comprising a bolt that fixes both the drive member and the mass body to the crankshaft.   The mass body includes a disk-shaped member whose inner peripheral portion is fixed to the crankshaft, and an annular member provided on the outer peripheral portion of the disk-shaped member. Flywheel assembly. A flywheel assembly for transmitting / blocking power from an engine crankshaft to an input shaft of a transmission,
The flywheel body ,
A plate member fixed to the flywheel body ;
A mechanism for elastically connecting the flywheel main body to the crankshaft in a rotational direction, and a damper mechanism having an elastic member that is held on the plate member so as not to fall off,
An inner peripheral portion of the plate member is disposed between the crankshaft and the input shaft in the radial direction, is rotatably supported by the crankshaft, and supports the input shaft in the radial direction. ,
Flywheel assembly.   The flywheel assembly according to claim 18, wherein the plate member has an elastic member holding portion opened to the crankshaft side.   The flywheel according to claim 18 or 19, further comprising a drive member fixed to the crankshaft and detachably engaged in an axial direction with respect to a rotational direction end of the elastic member of the damper mechanism. Assembly.   21. A flywheel assembly according to claim 18-20, wherein the drive member is a plate.   The flywheel assembly according to claim 20 or 21, wherein the drive member has a plurality of abutting portions extending in an axial direction and engaging with an end in a rotational direction of the elastic member.   The flywheel assembly according to any one of claims 20 to 22, further comprising a mass body fixed to the crankshaft and separate from the drive member.

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