WO2006120944A1

WO2006120944A1 - Clutch device for motorcycle

Info

Publication number: WO2006120944A1
Application number: PCT/JP2006/309018
Authority: WO
Inventors: Yoshio Imanishi; Hitoshi Terabayashi; Minoru Abe
Original assignee: Exedy Corporation
Priority date: 2005-05-09
Filing date: 2006-04-28
Publication date: 2006-11-16

Abstract

A clutch device for a motorcycle has a clutch housing (1), an output side rotating body (2), a clutch section (3), pressure plates (4), a diaphragm spring (5), a release member (6), and a restriction mechanism (7). The clutch housing (1) is connected to an input side member, and the output side rotating body (2) is connected to an output side member. The clutch section (3) has the pressure plates (4) that press against each other. The diaphragm spring (5) presses the pressure plates (4), and the release member (6) transmits release operation force to the diaphragm spring (5). The restriction mechanism (7) centers the release member (6) and inhibits rotation of the release member (6) relative to the diaphragm spring (5).

Description

Specification

Clutch device for motorcycle

Technical field

The present invention relates to a clutch device, and more particularly, to a clutch device for a motorcycle that transmits power of an input side member to an output side member and interrupts power transmission by operation of a release mechanism.

Background art

Generally, in motorcycles such as motorcycles and buggies, multi-plate clutch devices are used in order to transmit or cut off engine power and other power to a transmission. This multi-plate clutch device comprises a clutch housing connected to the crankshaft side of the engine, an output side rotating body connected to the transmission side, and a clutch unit for transmitting and disconnecting power between them. And a pressure plate for pressing the clutch portion. In the clutch portion, a first clutch plate engaged with the clutch housing and a second clutch plate engaged with the output side rotating body are alternately arranged.

The rotation of the crankshaft is transmitted to the transmission side by pressing the clutch plates with a pressing member such as a spring via a pressure plate. Also, when the clutch is turned off (rotational transmission is cut off), the operator grips the clutch lever to activate the release mechanism, and the release mechanism releases the pressing of the pressing member against the clutch plate, and the first and the first Power transmission between the 2nd clutch plate is cut off!

Patent Document 1: Japanese Patent Application Laid-Open No. 2003-222159

Disclosure of the invention

In the clutch device as described above, the power transmission capacity is determined by the pressing force (pressing load) of the pressing member and the capacity of the clutch portion (the number and size of the clutch plates). Therefore, in order to secure the desired power transmission capacity in a small space, it is necessary to increase the pressing load.

On the other hand, in the conventional clutch device for a motorcycle, in order to cut off the connection of the clutch portion It is necessary to cover the same release load as the pressing load by the release mechanism. Since this release load is determined by the force holding the clutch lever, ie, the operating force, if the pressing load is increased, the operating force of the clutch lever is increased accordingly, and the operability is deteriorated. Therefore, the pressing load can not be made very high.

[0006] Therefore, the present applicant uses the lever mechanism to amplify the operating force and cause it to act on the pressing portion, and the clutch is released with an operating force that is smaller than the operating force in the conventional clutch device by the lever ratio. Has already applied for a clutch device that can be operated (Japanese Patent Application No. 2004-367 292) o

In this clutch device, the clutch spring is brought into pressure contact with the diaphragm plate by the diaphragm spring. Then, the release bearing is held by the release member, and the inner peripheral portion of the diaphragm spring is pressed by the release member to release the pressing force by the diaphragm spring.

Therefore, in order not to impair the operability over a long period of time, it is necessary to configure the release member force S to operate smoothly and to suppress the wear of the release member.

In addition, it is necessary to restrict relative rotation between the diaphragm spring and a member that supports the diaphragm spring to suppress wear of the support portion of each member. In addition, it is necessary to suppress the fluctuation of the hysteresis torque due to the contact between the diaphragm spring and other members.

In the clutch device, when the clutch is engaged (clutch on), a slight gap exists between the release member and the diaphragm spring, and the release member moves in the axial direction. It is in a state of gaining. For this reason, there is a problem that the release member vibrates due to engine vibration or the like, and the operability of the clutch, specifically, the clutch disconnection amount varies, and the clutch disconnection becomes worse. Further, since the release member is not connected with other components, the release member may fall off when the clutch device is transported.

In addition, in the case of such a configuration, if the radial position of the diaphragm spring is shifted, the spring characteristics will not be stable, and the release characteristics will also be stable. Further, in the clutch device, a push type release method in which the clutch is disengaged (power off state) by pushing the release member, and a pull type release method in which the clutch is disengaged by pulling the release member. And exist. In the pull type device, the outer periphery of the diaphragm spring is supported by the clutch housing, the clutch portion is pressed by the middle portion of the diaphragm spring, and the inner peripheral portion is pulled by the release member. .

In the device having such a configuration, an axial thrust force acts on the clutch housing in response to the release operation. However, since the clutch housing is not fixed in the axial direction and is configured to be movable, the clutch housing and the input gear mounted thereon are subjected to thrust by the release operation force. Then, a load is applied to a thrust plate or the like provided between these members and members adjacent to the members, and the forces may rotate relative to each other, resulting in accelerated wear.

An object of the present invention is, in a device configured to perform clutch operation using a lever mechanism, to smoothly operate a member holding a release bearing and to suppress the wear thereof.

[0015] Another object of the present invention is to limit the relative rotation between the pressing member and the member supporting the pressing member in the device in which the clutch operation is performed using the lever mechanism, thereby suppressing the pressing member and the pressing member. The object of the present invention is to suppress the wear of the supporting member and to suppress the fluctuation of the hysteresis torque due to the contact between the pressing member and the supporting member.

[0016] Still another object of the present invention is to suppress the vibration of the release member to suppress the variation in the amount of disengaging the clutch in the device in which the clutch operation is performed using the lever mechanism.

[0017] Still another object of the present invention is to prevent the release member from falling off when transporting the device in a device in which the clutch operation is performed using a lever mechanism.

[0018] Still another object of the present invention is to stabilize the radial position of a pressing member such as a diaphragm spring to stabilize spring characteristics, that is, clutch pressing force and clutch releasing force (releasing operating force). is there.

[0019] Still another subject of the present invention is to perform clutch operation using a lever mechanism, in particular The purpose is to suppress wear of each part by the release operation force in a pull type clutch device.

The clutch device for a motor cycle according to claim 1 is a device that transmits the power from the input side member to the output side member and blocks the power transmission by the operation of the release mechanism. And a clutch portion, a pressure plate, a pressing member, a reliance member, and a regulating mechanism. The clutch housing is connected to one of the input side member and the output side member. The rotating body is provided on the inner peripheral portion of the clutch housing, and is connected to the other of the input side member and the output side member. The clutch portion has one or more plate members for transmitting and disconnecting power between the clutch housing and the rotating body. The pressure plate is a member for pressing one or more plate members of the clutch portion. The pressing member has a pressing portion for pressing the pressure plate, and a lever portion for amplifying the operating force of the release mechanism by a predetermined lever ratio to release the pressing force by the pressing portion. The release member holds the release mechanism and transmits the operating force of the release mechanism to the lever portion. The restriction mechanism centers the release member and prohibits relative rotation of the release member with respect to the pressing member.

In this clutch device, the pressing force by the pressing member acts on the clutch portion via the pressure plate, and the clutch portion is turned on (power transmission state). In this state, the power from the input side member is input to, for example, the clutch housing, and further transmitted to the rotating body through the clutch portion and output to the output side member. Conversely, when the power from the input side member is input to the rotating body, this power is transmitted to the clutch housing through the clutch portion and is output to the output side member. When the clutch is turned off (power shutoff state), when the lever portion of the pressing member is operated by the release mechanism, this operation force is amplified at a predetermined lever ratio and acts on the pressing portion, and the plat by the pressing portion The pressure on the shear plate is released.

Here, since the operating force by the lever mechanism is amplified by the lever ratio of the lever portion and acts on the pressing portion, the clutch with a smaller operating force by the lever ratio compared to the operating force in the conventional clutch device Off operation is possible. Also, it is centered by the member force regulation mechanism that holds the release mechanism, and relative rotation to the pressing member is prohibited. Therefore, the release operation can be performed smoothly and the wear of the holding member can be suppressed.

A clutch device for a motorcycle according to claim 2 is the device according to claim 1, wherein the pressing member is a diaphragm spring having a pressing portion on the outer peripheral portion and a lever portion on the inner peripheral portion. In this case, the configuration of the pressing member is simplified.

In the clutch device for a motorcycle according to a third aspect of the present invention, in the device of the first aspect, the rotating body has a friction portion facing the pressure plate at an outer peripheral portion, and the clutch portion engages with the clutch housing. The first clutch plate and the second clutch plate engaged with the rotating body, and the first and second clutch plates are sandwiched between the friction portion of the rotating body and the pressure plate.

[0025] Here, the first and second clutch plates constituting the clutch portion are held between the friction portion of the rotating body and the pressure plate, and the power is obtained from the clutch housing, the first clutch plate, the first 2 Clutch plate is transmitted by the route of the rotating body.

In the clutch device for a motorcycle according to claim 4, in the device according to claim 2, in the diaphragm spring, the outer peripheral portion of the pressing portion presses the pressure plate, and the inner peripheral portion of the pressing portion is a rotating body. The inner peripheral portion of the lever portion is moved to the pressure plate side by the release mechanism.

Here, by operating the inner peripheral portion of the lever portion of the diaphragm spring by the release mechanism, the outer peripheral portion of the pressing portion moves in a direction away from the pressure plate, and the pressing portion presses the pressure plate. The pressure is released.

Here, since the inner peripheral portion of the pressing portion of the diaphragm spring is supported by the outer peripheral portion of the rotating body, the structure for supporting the diaphragm spring is simplified, and the axial dimension is also shortened. In a general automobile clutch device, in which the clutch spring is turned off by operating the inner peripheral end of the diaphragm spring to the engine side, the inner peripheral portion of the pressing portion of the diaphragm spring is supported by the clutch cover There is. In this clutch cover support structure, the outer periphery of the clutch cover is supported by the portion extending to the inner peripheral side so as to cover the outer peripheral force on the outer side of the diaphragm spring. In such a structure, the axial direction is relatively relatively large for supporting the diaphragm spring. A long space is required. However, in the invention according to the claims, as described above, since the diaphragm spring is supported by the outer peripheral portion of the rotating body, the support can be performed in a relatively short axial space.

[0029] A motorcycle clutch device according to claim 5 is the device according to claim 1, wherein the release member is an annular member having a plurality of radially outwardly projecting claws on its outer periphery, and the rotating body is The pressing member has a rotor body and a support plate fixed to the rotor body and supporting the pressing member together with the rotor body. The support plate is formed of a plurality of claws of the relief member. It has a plurality of engagement notches which engage with each other at its inner periphery. And a control mechanism is constituted by a plurality of claws and a plurality of engagement notches.

Here, the plurality of claws of the release member are engaged with and engaged with the engagement notches of the support plate. Further, since the support plate is fixed to the pressing member so as not to be rotatable relative to the pressing member, relative rotation between the release member and the pressing member is prohibited.

[0031] A motorcycle clutch device according to claim 6 is the device according to claim 1, wherein the release member is an annular member having a plurality of axially projecting projections on the side surface, and the pressing member is a release member. Each of the plurality of projections of the member has a plurality of slits engaged with each other, and the rotating body is non-rotatably connected to the pressing member and fixed to the rotating body main body and the rotating body main body. And an annular support plate for supporting the pressing member. The restriction mechanism is constituted by the outer peripheral surface of the release member, the inner peripheral surface of the support plate in contact with the outer peripheral surface of the release member, the plurality of protrusions, and the plurality of slits.

Here, when the outer peripheral surface of the release member abuts against the inner peripheral surface of the support plate, the release member is centered, and the plurality of projections of the release member engage with the engagement notches of the pressing member. Thus, the release member is prevented from rotating relative to the pressing member.

[0033] A motorcycle clutch device according to claim 7 is the device according to claim 1, wherein the release member is an annular member having a plurality of recessed portions recessed radially inward at the outer peripheral portion, and the rotating body is And a plurality of claws connected to the pressing member so as not to be rotatable relative to each other and engaged with the plurality of concave portions of the release member, and the restriction mechanism is constituted by the plurality of concave portions and the plurality of claws There is.

Here, the release member is centered by engaging the claws of the rotating body with the plurality of recesses of the release member. Further, since the rotating body is fixed so as not to be rotatable relative to the pressing member, relative rotation between the release member and the pressing member is prohibited.

[0035] A clutch device for a motor cycle according to claim 8 is a device for transmitting the power from the input side member to the output side member and blocking the power transmission by the operation of the release mechanism. It has a body, a clutch, a pressure plate, a pressing member, and a locking mechanism. The clutch housing is connected to the input side member and the output side member. The rotating body is provided on the inner circumferential portion of the clutch housing and is connected to the other of the input side member and the output side member. The clutch portion has one or more plate members for transmitting and disconnecting power between the clutch housing and the rotating body. The pressure plate is for pressing the plate member of the clutch portion. The pressing member has a pressing portion supported by the rotating body and pressing the pressure plate, and a lever portion for amplifying the operating force of the release mechanism by a predetermined lever ratio to release the pressing force by the pressing portion. Do. The anti-rotation mechanism prohibits relative rotation of the pressing member with respect to the rotating body.

Here, since the operating force by the lever mechanism is amplified by the lever ratio of the lever portion and acts on the pressing portion, the clutch with a smaller operating force by the lever ratio compared to the operating force in the conventional clutch device Off operation is possible. Further, since relative rotation of the pressing member with respect to the rotating body is prohibited, wear of the pressing member and the rotating body is suppressed, and the pressing portion It is possible to suppress the fluctuation of the hysteresis torque due to the contact between the material and the rotating body.

[0038] A clutch device for a motor cycle according to claim 9 is the device according to claim 8, wherein the pressing member has claws on the outer peripheral portion, and the pressure plate engages with the rotating body so as to be relatively non-rotatable. And the slit which the nail | claw of a press member engages. The anti-rotation mechanism is constituted by the claws of the pressing member and the slits of the pressure plate.

Here, the relative rotation between the pressing member and the presser plate is prohibited by the engagement of the claws formed on the outer peripheral portion of the pressing member with the presser plate. Further, since the relative rotation between the pressing member and the rotating body is prohibited, relative rotation between the pressing member and the rotating body is prohibited. For this reason, even if the pressing member and the rotating body come in contact with each other, the wear of the both, in particular, the wear of the rotating body can be suppressed. Further, even if the pressing member is moved in the axial direction by the operation of the release mechanism, it can be prevented from contacting the rotating body etc., and the contact between the pressing member and other members can be suppressed to stabilize the hysteresis torque. .

The clutch device for a motor cycle according to claim 10 is the device according to claim 9, wherein the claws are provided so as to project radially outward at the outer peripheral portion of the pressing member, and the pressure plate has an axial direction , And a slit is formed in the projecting portion to support the outer periphery of the pressing member.

Here, since the outer periphery of the pressing member is supported and centered by the protrusion of the pressure plate, the configuration for centering the pressing member is simplified.

[0042] A motorcycle clutch device according to claim 11 is the device according to claim 10, wherein the projecting portion of the pressure plate is formed in an annular shape. In this case, the centering accuracy of the pressing member is enhanced.

A clutch device for a motor cycle according to claim 12 is a device for transmitting the power from the input side member to the output side member and interrupting the power transmission by the operation of the release mechanism, comprising: a clutch housing; It comprises a body, a clutch portion, a pressure plate, a pressing member, a release member, and a vibration suppressing mechanism. The clutch housing is connected to one of the input side member and the output side member. The rotating body is provided on the inner peripheral portion of the clutch housing, and is connected to the other of the input side member and the output side member. The clutch unit is one or more plates for transmitting and disconnecting power between the clutch housing and the rotating body. It has a fixed member. The pressure plate is for pressing the plate member of the clutch portion. The pressing member is supported by the rotating body and includes a pressing portion for pressing the pressure plate and a lever portion for amplifying the operating force of the release mechanism by a predetermined lever ratio to release the pressing force by the pressing portion. Have. The release member is a member for holding the release mechanism and transmitting the operating force of the release mechanism to the lever portion. The vibration suppression mechanism is a mechanism for suppressing the vibration of the release member.

In this clutch device, the pressing force by the pressing member acts on the clutch portion via the pressure plate, and the clutch portion is turned on (power transmission state). In this state, the power from the input side member is input to, for example, the clutch housing, and further transmitted to the rotating body through the clutch portion and output to the output side member. Conversely, when the power from the input side member is input to the rotating body, this power is transmitted to the clutch housing through the clutch portion and is output to the output side member. When the clutch is turned off (power cutoff state), when the lever portion of the pressing member is operated by the release member, this operation force is amplified at a predetermined lever ratio and acts on the pressing portion, thereby causing the prepress by the pressing portion. The pressing force on the tushing plate is released.

Here, since the operating force by the release mechanism is amplified by the lever ratio of the lever portion and acts on the pressing portion, the clutch with a smaller operating force than the operating force of the conventional clutch device by the lever ratio. Off operation is possible. In addition, since the vibration of the release member is suppressed, it is possible to prevent the release member from moving in the axial direction, and the clutch disengagement amount is stabilized, so the clutch disengagement is improved.

The motorcycle clutch device according to claim 13 is the device according to claim 12, wherein the vibration suppressing mechanism is a clip for holding the release member between the pressing member and the pressing member.

Here, the release member is sandwiched between the clip and the pressing member, and the vibration of the release member is suppressed.

[0048] The motorcycle clutch device according to claim 14 is the device according to claim 13, wherein the rotating body is fixed to the rotating body main body and the rotating body main body and a pressing member is interposed between the rotating body main body and the rotating body main body. And a supporting plate for supporting. And the clip is attached to the support plate And an elastically deformable pressure contact portion which extends from the attachment portion and presses the side surface of the release member against the pressing member side.

Here, the clip is attached to the support plate. The release member is pressed against the pressing member by the elastic force of the press-contact portion formed on the clip. Therefore, the vibration of the release member can be suppressed.

[0050] The clutch device for a motorcycle according to claim 15 is the device according to claim 14, wherein the mounting portion of the tap is formed in an annular shape, and the pressure contact portion of the clip is on the inner circumferential side from the annular mounting portion. Extend and press the side of the release member.

The clutch device for a motor cycle according to claim 16 is a device for transmitting the power from the input side member to the output side member and interrupting the power transmission by the operation of the release mechanism, comprising: a clutch housing; It comprises a body, a clutch portion, a pressure plate, a pressing member, and a pressing member support. The clutch housing is connected to one of the input side member and the output side member. The rotating body is provided on the inner peripheral portion of the clutch housing, and is connected to the other of the input side member and the output side member. The clutch portion has one or more plate members for transmitting and disconnecting power between the clutch housing and the rotating body. The pressure plate is for pressing the plate member of the clutch portion. The pressing member has a pressing portion for pressing the pressure plate, and a lever portion for amplifying the operating force of the release mechanism at a predetermined lever ratio to release the pressing force by the pressing portion. The pressing member supporting portion supports the pressing member in the radial direction and performs positioning in the radial direction.

In this clutch device, the pressing force by the pressing member acts on the clutch portion via the pressure plate, and the clutch portion is turned on (power transmission state). In this state, the power from the input side member is input to, for example, the clutch housing, and further transmitted to the rotating body through the clutch portion and output to the output side member. Conversely, when the power from the input side member is input to the rotating body, this power is transmitted to the clutch housing through the clutch portion and is output to the output side member. When the clutch is turned off (power shutoff state), when the lever portion of the pressing member is operated by the release mechanism, this operation force is amplified at a predetermined lever ratio and acts on the pressing portion, thereby causing the prepress by the pressing portion. The pressing force on the tushing plate is released. Here, since the operating force by the release mechanism is amplified by the lever ratio of the lever portion and acts on the pressing portion, the clutch with a smaller operating force by the lever ratio compared to the operating force in the conventional clutch device Off operation is possible. Further, since the pressing member is radially supported by the pressing member supporting portion and positioned, the operation of the pressing member is stabilized. For example, when a diaphragm spring is used as the pressing member, the position of the operating fulcrum of the diaphragm spring is stabilized and the spring characteristics are stabilized.

The clutch device for a motor cycle according to claim 17 is the device according to claim 16, wherein the pressing member supporting portion is disposed on the outer peripheral portion of the pressure plate and on the side where the pressing member is disposed. It is an axial direction projecting part which protrudes in the direction and supports a plurality of places on the outer periphery of the pressing member.

Here, an axial protrusion is provided on the outer peripheral portion of the pressure plate, and thereby the pressing member is supported. Therefore, radial support and positioning of the pressing member can be performed without separately providing a special member or the like.

According to an eighteenth aspect of the present invention, in the clutch apparatus for a motorcycle according to the eighteenth aspect, the axial direction projecting portion is an annular projecting portion provided so as to project in the axial direction on the outer peripheral portion of the pressure plate. . Here, the outer periphery of the pressing member is supported by the annular protrusion.

The clutch device for a motor cycle according to claim 19 is a device for transmitting the power from the input side member to the output side member and interrupting the power transmission by the operation of the release mechanism, and the clutch housing It has a body, a clutch portion, a pressure plate, and a pressing member. The clutch housing is connected to one of the input side member and the output side member. The rotating body is provided on the inner peripheral portion of the clutch housing and is axially immovably connected to the other of the input side member and the output side member. The clutch portion has one or more plate members for transmitting and disconnecting power between the clutch housing and the rotating body. The pressure plate is a member for pressing one or more plate members of the clutch portion. The pressing member has a pressing portion for pressing the pressure plate and a lever portion for amplifying the operating force of the release mechanism by a predetermined lever ratio to release the pressing force by the pressing portion. Then, the outer peripheral portion of the pressing portion is supported by the rotating body, the inner peripheral portion of the pressing portion presses the pressure plate, and the inner peripheral portion of the lever portion is opposite to the pressure plate by the release mechanism. Be moved to

In this clutch device, the pressing force by the pressing member acts on the clutch portion via the pressure plate, and the clutch portion is turned on (power transmission state). In this state, the power from the input side member is input to, for example, the clutch housing, and further transmitted to the rotating body through the clutch portion and output to the output side member. Conversely, when the power from the input side member is input to the rotating body, this power is transmitted to the clutch housing through the clutch portion and is output to the output side member.

When the clutch is turned off (in the power cut off state), when the lever portion of the pressing member is pulled by the release mechanism, this operation force is amplified at a predetermined lever ratio and acts on the pressing portion, and the pressing portion Is moved away from the pressure plate, and the pressure on the pressure plate by the pressing portion is released.

Here, since the operating force by the release mechanism is amplified by the lever ratio of the lever portion and acts on the pressing portion, the clutch with a smaller operating force by the lever ratio compared to the operating force in the conventional clutch device Off operation is possible. That is, when the clutch operating force is set equal to the conventional one, the capacity of the clutch portion can be reduced, so the number of clutch plates constituting the clutch portion can be reduced, and the axial dimension can be reduced. Can.

Further, in this device, when the lever portion of the pressing member is pulled, the operation force acts on the rotating body supporting the pressing portion. However, since the rotating body is connected immovably in the axial direction to the other of the input side member and the output side member, the release operation force acts on the member such as the thrust plate to suppress wear of the member. it can.

Here, since the outer peripheral portion of the pressing portion of the pressing member is supported by the rotating body, the configuration for supporting the pressing member is simplified, and the axial dimension is also shortened. In a clutch device for a general automobile, in the case of a pull type device in which the inner peripheral end of a diaphragm spring as a pressing member is bowed to the transmission side I, in the pull type device for disengaging the clutch, the pressing portion of the diaphragm spring The outer periphery of the is supported by the clutch cover. In this supporting structure by the clutch cover, the outer peripheral portion of the clutch cover is supported by the portion covering the outer peripheral side force of the diaphragm spring. In such a structure, A relatively long axial space is required to support the ram spring. However, in the invention according to the claims, as described above, since the pressing member is supported by the rotating body, it is possible to support in a relatively short axial space.

A clutch device for a motor cycle according to claim 20 is the device according to claim 19, wherein the rotating body has a rotating body main body provided with a clutch portion, and a support plate. The support plate is disposed so as to sandwich the pressing member with the pressure plate, is fixed to the rotating body main body, and supports the outer peripheral portion of the pressing member.

The clutch device for a motor cycle according to claim 21 is the device according to claim 20, wherein a plurality of slits are radially formed in the lever portion of the pressing member, and the rotating body main body passes through the slit. The support plate is fixed to the axial end face of the boss, and has a boss extending in the opposite direction to the side where the pressing plate for pressing is disposed.

Brief description of the drawings

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

[FIG. 2] A front view of the device.

[FIG. 3] A longitudinal sectional view of a motorcycle clutch device according to a second embodiment of the present invention.

[FIG. 4] Front view of the said apparatus.

[FIG. 5] A longitudinal sectional view of a motorcycle clutch device according to a third embodiment of the present invention.

FIG. 6 is a front view of the device.

[FIG. 7] A longitudinal sectional view of a motorcycle clutch device according to a fourth embodiment of the present invention.

[FIG. 8] A front view of the device.

FIG. 9 is a longitudinal sectional view of a motorcycle clutch device according to a fifth embodiment of the present invention.

[FIG. 10] A front view of the device.

[FIG. 11] A longitudinal sectional view of a motorcycle clutch device according to a sixth embodiment of the present invention.

[FIG. 12] A front view of the device.

FIG. 13 is a front view of a motorcycle clutch device according to a seventh embodiment of the present invention.

[FIG. 14] A longitudinal sectional view of a motorcycle clutch device according to an eighth embodiment of the present invention. Explanation of sign

[0066] 1, 101 clutch housing 2, 51, 102 Output side rotating body

102a boss

At 3, 103 clutch

4, 104 plate plate

5, 105 diaphragm spring

5a, 105a pressing part

5b, 105b lever part

5d, 105d slit

6, 42, 52, 106 Release member

6b nails

7, 40, 50 regulation mechanism

19, 41, 119 Support plate

19b Notch for engagement

30 Release bearing

42c projection

51a Claw

52b Recess

72, 74 clips

72a, 74a mounting part

72b, 74b pressure contact

125, 126 Clutch plate

BEST MODE FOR CARRYING OUT THE INVENTION

First Embodiment

The clutch device for a motorcycle shown in FIG. 1 and FIG. 2 is for transmitting the power of the crankshaft force of the engine to the transmission and for interrupting the power by the operation of the release mechanism. This clutch device is configured to turn off the clutch by pushing the release bearing inward in the axial direction, and the clutch housing 1, the output side rotating body 2, A clutch unit 3 for transmitting and disconnecting power between the latch housing 1 and the output side rotating body 2, a pressure plate 4, a diaphragm spring 5, a release member 6, and a centering of the release member 6 and And a regulation mechanism 7 for preventing rotation.

The clutch housing 1 has a disc-shaped portion 10 and a cylindrical portion 11 which also extends outward in the axial direction (rightward in FIG. 1) of the force on the outer peripheral side of the disc portion 10. An input gear 13 is attached to the disc portion 10 via a plurality of annular rubber members 12. The input gear 13 is engaged with a drive gear (not shown) fixed to a crankshaft on the engine side. The rubber member 12 is provided to absorb the vibration of the engine force, and another coil spring or the like may be used. As is apparent from FIG. 2, in the cylindrical portion 11, a plurality of concave portions which are recessed radially outward are formed in a portion on the inner peripheral side, and in the cylindrical portion 11, a plurality of axially extending members are formed. Notches are formed at predetermined intervals in the circumferential direction. This notch is for releasing the lubricating oil on the inner side to the outer peripheral side.

The output side rotating body 2 is disposed on the inner peripheral portion of the clutch housing 1. The output side rotating body 2 is formed in a substantially disc shape, and the spline 15 is formed on the outer peripheral portion, and the spline hole 16 is formed on the inner peripheral portion. And, the spline holes 16 in the inner peripheral part are in mesh with the input shaft 17 of the transmission. A disc-like friction flange 18 further extending radially outward is formed at the axially inner end of the outer peripheral portion of the output side rotating body 2. Furthermore, on the outer peripheral end of the axially outer surface of the output side rotating body 2, a plurality of supporting protrusions 2a protruding in the axial direction are formed at predetermined intervals in the circumferential direction, and the inner peripheral end is formed. As is apparent from FIG. 2, a plurality of axially projecting inlay projections 2b are formed at predetermined intervals in the circumferential direction.

Further, a support plate 19 for supporting the diaphragm spring 5 on the output side rotary body 2 is fixed to the output side rotary body 2 by rivets 20. The support plate 19 is an annular member, and the inner peripheral end thereof is supported by the inlay projection 2 b of the output side rotating body 2. At the outer peripheral end of the support plate 19, an annular support projection 19 a protrudes inward in the axial direction so as to face the support projection 2 a of the output side rotating body 2. In addition, input gear 1 A thrust plate 21 is provided between the inner peripheral portion of 3 and the inner peripheral portion of the output side rotating body 2.

Clutch section>

The clutch unit 3 has two first clutch plates 25 and one second clutch plate 26. Both of these clutch plates 25 and 26 are annularly formed, and are alternately arranged in the axial direction. In addition, a plurality of outwardly projecting engaging projections are formed on the outer peripheral portion of the first clutch plate 25, and the engaging projections are formed on the inner peripheral portion of the cylindrical portion 11 of the clutch housing 1. It is in the recess. In addition, the first clutch plate 25 is provided with friction facings on both sides thereof. The second clutch plate 26 has a spline formed on the inner peripheral portion thereof, and this spline is engaged with a spline 15 formed on the outer periphery of the output side rotating body 2.

The pressure plate 4 is an annular member, and is disposed further axially outside the outermost first clutch plate 25. An spline hole 4 a is formed on the inner peripheral portion of the pressure plate 4 so as to protrude inward in the axial direction, and the spline hole 4 a is engaged with the outer peripheral spline 15 of the output side rotating body 2. Further, an annular projecting portion 4 b projecting in the axial direction is formed on the outer peripheral portion of the axially outer surface of the pressure plate 4, and further, on the inner peripheral side of the annular projecting portion 4 b, a shaft is formed. A pressing projection 4c that protrudes in the direction is formed. The annular projection 4b protrudes axially outside the pressing projection 4c.

[0073] Diaphragm spring>

The diaphragm spring 5 is an annular plate member, has a pressing portion 5a as a disc spring on the outer peripheral portion, and has a lever portion 5b on the inner peripheral portion for releasing the pressing of the pressing portion 5a. Further, at the inner peripheral end of the lever portion 5b, an abutting portion 5c projecting outward in the axial direction is formed. The diaphragm spring 5 is disposed so that the outer peripheral portion thereof is located on the inner peripheral side of the annular projection 4 b of the pressure plate 4. The pressing portion 5a of the diaphragm spring 5 has an outer peripheral portion supported by the pressing projection 4c of the pressure plate 4, and an inner peripheral portion thereof is a supporting projection 2a of the output side rotating body 2 and a supporting projection of the support plate 19. Sandwiched by 19a Are supported. In the state where such a diaphragm spring 5 is set as shown in FIG. 1, the pressing force of the disc spring presses the pressure plate 4 axially inward with a predetermined pressing force. Therefore, the first and second clutch plates 25 and 26 of the clutch portion 3 are held between the friction portion 18 of the output side rotating body 2 and the pressure plate 4.

The lever portion 5b of the diaphragm spring 5 is formed of a plurality of levers arranged radially. In addition, a wide slit is formed between two levers adjacent in the circumferential direction, and a part of the force of the output side rotating body 2 passes through the slit axially outward and the shaft of the support plate 19 It is in contact with the inner surface. Thus, the relative rotation between the support plate 19 and the output side rotating body 2 and the diaphragm spring 5 is restricted by a part of the output side rotating body 2 passing through the slit of the lever portion 5b of the diaphragm spring 5 It is done.

The release member 6 is an annular plate member, and holds a release bearing 30 on the inner periphery. That is, at the inner peripheral portion of the release member 6, a bearing holding portion 6a is formed on the axially outer side, and an axially inner shoulder portion of the outer ring of the release bearing 30 is fitted to the bearing holding portion 6a. . Further, as shown in FIG. 2, on the outer periphery of the release member 6, there are formed a plurality of claws 6b projecting radially outward. The plurality of claws 6b are arranged at equal intervals in the circumferential direction.

As described above, the regulating mechanism 7 is a mechanism for centering and preventing rotation of the release member 6, and includes a plurality of claws 6 b formed on the release member 6 and an engagement cut formed on the support plate 19. It consists of a notch 19b. That is, in the inner peripheral portion of the support plate 19, a plurality of engagement notches 19b are formed at equal angular intervals in the circumferential direction. The plurality of claws 6b of the release member 6 are engaged with the engagement notch 19b. The release member 6 is centered by the engagement between the claw 6b and the engagement notch 19b, and relative rotation with respect to the support plate 19, the output side rotating body 2 and the diaphragm spring 5 is prohibited. The centering of the release member 6 may be performed by bringing the outer peripheral surface of the claw 6b into contact with the inner peripheral surface of the engagement notch 19b, or the outer surface of the claw 6b and the inner side surface of the engagement cutout 19b The You may make it contact.

Next, the operation will be described.

In the state shown in FIG. 1, the pressing plate 4 is pressed inward in the axial direction by the pressing portion 5 a of the diaphragm spring 5 with a predetermined pressing force, and the first and second clutch plates 25, 26 of the clutch portion 3 It is sandwiched between the friction portion 18 of the output side rotating body 2 and the pressure plate 4. In this case, the clutch is in the ON state, and the rotation input with the crankshaft force also via the input gear 13 and the rubber member 12 is transmitted to the first clutch plate 25 via the clutch housing 1 and further the second clutch plate It is transmitted from 26 to the output side rotating body 2 and transmitted to the input shaft 17 of the transmission.

On the other hand, when the driver grips the clutch lever, the operation force is transmitted to the release bearing 30 via the clutch wire or the like, and the release bearing 30 is moved axially inward. The movement of the release bearing 30 is transmitted to the lever 5b of the diaphragm spring 5 via the release member 6, and the inner peripheral portion of the lever 5b is moved axially inward. Then, with the radially intermediate portion of the diaphragm spring 5 as a fulcrum, the outer peripheral portion of the pressing portion 5 a moves axially outward, and the pressing portion 5 a separates from the pressing projection 4 c of the pressure plate 4. As a result, the pressing force of the pressure plate 4 is released, and the clutch portion 3 is turned off. In this clutch off state, the rotation from the clutch housing 1 is not transmitted to the output side rotating body 2.

Here, at the time of the release operation of the clutch off, the operation force is reduced by the action of the lever portion 5b. More specifically, assuming that the pressing force by the pressing portion 5a of the diaphragm spring 5 is P, for example, the release load R must be applied to the lever portion 5b in order to release the pressing force P.

R = P X (L1 / L2)

L1: The distance from the support portion of the inner peripheral portion of the pressing portion to the pressing point of the outer peripheral portion of the pressing portion L2: The distance from the support portion of the inner peripheral portion of the pressing portion to the contact portion with the release member of the lever portion. That is, the release load is reduced by the lever ratio (L1ZL2). Therefore, when setting the same release load as in the conventional device, the pressing load of the pressing part 5a is released. The bar ratio can be increased, and the number of clutch plates can be reduced if the transmission capacity of the clutch is made the same. Therefore, the clutch device can be made compact.

Further, in this device, the release member 6 is centered by the engagement between the claw 6b of the release member 6 and the engagement notch 19b of the support plate 19. Therefore, the release member 6 can be centered with a simple configuration, and the release operation can be performed smoothly. Further, for the same reason, the relative rotation between the release member 6 and the diaphragm spring 5 is prohibited, so that the wear at the contact portion between the diaphragm spring 5 and the release member 6 can be suppressed. Furthermore, the support plate 19 passes through the notch of the lever part 5 b of the diaphragm spring 5 and is fixed to the output side rotating body 2, whereby the diaphragm spring 5 and the output side rotating body 2 and the support plate 19 Since relative rotation is prohibited, it is possible to suppress wear at the contact portion between each of the supporting projections 2a, 19a and the diaphragm spring 5.

Further, in this case, since the diaphragm spring 5 is radially supported by the annular projection 4b of the pressure plate 4; ^ erected, the operating support point of the diaphragm spring 5 is always at the same position become. Therefore, the spring characteristics of the diaphragm spring 5 are stabilized, and the clutch pressing force and the release force are stabilized.

Modification of First Embodiment

(a) In the first embodiment, the projecting portions 4b of the pressure plate 4 for supporting the diaphragm spring 5 are provided over the entire circumference, but a plurality of projecting portions are provided at predetermined intervals in the circumferential direction. It is also possible to support a plurality of points on the outer periphery of the diaphragm spring 5 to position in the radial direction.

(B) In the first embodiment, the diaphragm spring is supported by another member that supports the outer peripheral surface of the diaphragm spring 5 by the protrusion 4 b formed on the outer periphery of the pressure plate 4. Anyway, good!

Furthermore, in this embodiment, the force required to support the diaphragm spring 5 in the middle in the radial direction, that is, the inner peripheral portion of the pressing portion 5a. This portion is the inner peripheral side by the outer peripheral portion of the output side rotating body 2. The clutch cover of a conventional automotive clutch device Compared to the one-by-one support structure, it can be supported in a simple and small space.

Second Embodiment

3 and 4 show a second embodiment. This embodiment differs from the first embodiment only in the members constituting the regulating mechanism, and the other configurations are the same.

Only portions different from the one embodiment will be described.

The regulation mechanism 40 is constituted by the diaphragm spring 5, the support plate 41 and the release member 42.

The diaphragm spring 5 has the same configuration as that of the first embodiment, and has a pressing portion 5a at the outer peripheral portion and a lever portion 5b at the inner peripheral portion. Further, at the inner peripheral end of the lever portion 5b, an abutting portion 5c projecting outward in the axial direction is formed.

The supporting plate 41 is fixed to the output side rotating body 2 by rivets 20 as in the first embodiment. The support plate 41 is an annular member, and the inner peripheral end is supported by the spigot projection 2b of the output side rotating body 2 as in the first embodiment. Further, at the outer peripheral end of the support plate 41, an annular support projection 41a protrudes inward in the axial direction so as to face the support projection 2a of the output side rotating body 2. The difference from the first embodiment is that, as is apparent from FIG. 4, the support plate 41 of the second embodiment has a notch for engagement on the inner peripheral portion.

The release member 42 is an annular plate member, and holds the release bearing 30 on the inner peripheral portion. That is, at the inner peripheral portion of the release member 42, a bearing holding portion 42a is formed on the axially outer side, and an axially inner shoulder portion of the outer ring of the release bearing 30 is engaged with the bearing holding portion 42a. There is. Further, as apparent from FIG. 4, the outer periphery of the release member 42 is formed in a substantially hexagonal shape, and in the portions corresponding to the six apexes, the contact surfaces 42b are formed respectively! . The contact surface 42 b contacts the inner peripheral surface of the support plate 41. Further, on the axially inner side surface of the release member 42, a plurality of projections 42c that project in the axial direction are formed by embossing. The projection 42 c is formed to have the same width as the slit 5 d (see FIG. 4) of the diaphragm spring 5.

As described above, when the outer peripheral contact surfaces 42 b at six locations of the release member 42 abut on the inner peripheral surface of the support plate 41, the release member 42 is centered. Also, Relie The relative rotation of the release member 42 with respect to the diaphragm spring 5 is inhibited by the engagement of the projection 42 c of the guide member 42 with the slit 5 d of the diaphragm spring 5. Thus, the centering and detent of the release member 42 are achieved by the outer peripheral contact surface 42b of the release member 42, the inner peripheral surface of the support plate 41, the plurality of projections 42c of the release member 42, and the slits 5d of the diaphragm spring 5. A regulatory mechanism 40 for doing this is configured.

Third Embodiment

5 and 6 show a third embodiment. This embodiment is different from the first embodiment only in the members constituting the regulating mechanism, and the other configurations are the same. Therefore, only the parts different from the first embodiment will be described below.

The regulation mechanism 50 is configured by the output side rotation body 51 and the release member 52. The output side rotating body 51 has substantially the same configuration as the output side rotating body 2 of the first embodiment, and only the portion positioned on the inner peripheral side of the support plate 19 is different. That is, in the output side rotating body 51, the spline 15 is formed on the outer peripheral portion, the spline hole 16 is formed on the inner peripheral portion, and the spline hole 16 of the inner peripheral portion is engaged with the input shaft 17 of the transmission. ing. Further, at the outer peripheral portion of the output side rotating body 51, a disc-like friction flange 18 extending radially outward is formed at the axially inner end portion, and a plurality of outer peripheral ends of the axially outer surface are formed. A supporting projection 2a is formed. A support plate 19 is fixed to the output side rotary body 51 by rivets 20, and a part of the output side rotary body 51 protrudes outward in the axial direction on the inner peripheral side of the support plate 19, and the claws 51a are formed. It is formed. The plurality of claws 51a are formed at equal angular intervals in the circumferential direction, as shown in FIG.

On the other hand, the release member 52 is an annular plate member, and holds the release bearing 30 at the inner peripheral portion. That is, at the inner peripheral portion of the release member 52, a bearing holding portion 52a is formed on the axially outer side, and an axially inner shoulder portion of the outer ring of the release bearing 30 is engaged with the bearing holding portion 52a. There is. Further, as is clear from FIG. 6, a plurality of recesses 52 b are formed at equal angular intervals in the circumferential direction on the outer peripheral portion of the release member 52. The claw 5 la of the output side rotating body 51 is fitted into the recess 52b.

As described above, the release member 52 is centered and the die of the release member 52 is centered by fitting the plurality of claws 51a of the output side rotating body 51 into the concave portions 52b of the release member 52. Relative rotation to the baffle spring 5 is prohibited. Thus, the restriction mechanism 50 for centering and stopping the rotation of the release member 52 is configured by the claws 51a of the output side rotation body 51 and the concave portion 52b of the release member 52.

Fourth Embodiment

7 and 8 show a fourth embodiment. This embodiment is different from the first embodiment mainly in that it has an anti-rotation mechanism 70 for anti-rotation of the diaphragm spring 5.

The following describes the detent mechanism 70, but the configuration of the other parts is basically the same as that of the first embodiment.

The locking mechanism 70 has a slit 4 d formed in the pressure plate 4 and three claws 5 d formed in the outer peripheral portion of the diaphragm spring 5.

More specifically, slits 4 d are formed at three positions on the annular projection 4 b of the pressure plate 4 at equal angular intervals in the circumferential direction. And, as apparent from FIG. 8, three claws 5 d protruding radially outward are formed on the outer peripheral portion of the pressing portion 5 a of the diaphragm spring 5, and each of the three claws 5 d It is engaged with the slit 4 d of the plate 4.

Similarly to the above, the lever portion 5b of the diaphragm spring 5 is formed of a plurality of levers arranged radially, and a wide slit is formed between two levers adjacent in the circumferential direction. It is done. Then, a plurality of bosses 2c (see FIG. 7) protruding outward in the axial direction formed on a part of the output side rotating body 2 (see FIG. 7) It is in contact with the surface.

In the above configuration, the three claws 5 d of the diaphragm spring 5 are engaged with the three slits 4 d formed in the pressure plate 4, whereby the output side rotating body 2 of the diaphragm spring 5 is obtained. Relative rotation against is prohibited. For this reason, it is possible to suppress the wear of the support protrusions 2 a of the output side rotary member 2 supporting the diaphragm spring 5 and the support protrusions 19 a of the support plate 19.

Further, since the boss 2 c of the output side rotating body 2 passes through the slit of the diaphragm spring 5, when the diaphragm spring 5 moves by the clutch operation, the diaphragm spring 5 and the boss 2 c of the output side rotating body 2 Relative to each other in the axial direction. Therefore, When the diaphragm spring 5 rotates relative to the output side rotary body 2, the diaphragm spring 5 and the boss 2c come in sliding contact with each other when the diaphragm spring 5 moves in the axial direction, and the hysteresis torque fluctuates due to the frictional resistance at that time. It will be.

However, in this embodiment, the relative rotation between the diaphragm spring 5 and the output side rotating body 2 is prohibited by the engagement of the diaphragm spring 5 and the pressure plate 4. Can be avoided. Therefore, the hysteresis torque is stabilized.

Fifth Embodiment

9 and 10 show a fifth embodiment. This embodiment is different from the fourth embodiment only in the members constituting the detent mechanism, and the other configurations are the same. Therefore, in the following, only the portions different from the fourth embodiment will be described.

[0105] The members constituting the rotation prevention mechanism 40 are, similarly to the above, the presser plate and the diaphragm spring, and the first embodiment is the configuration of the presser plate and the claws formed on the diaphragm spring. Only the numbers differ. That is, in the pressure plate 4 in this embodiment, the annular protrusion 4 b in the pressure plate 4 in the above embodiment is not formed. And, as apparent from FIG. 10, five engagement bosses 41a are locally formed only at the portions corresponding to the five claws 5d of the diaphragm spring 5 of the diaphragm plate 4. A slit 41b in which the claw 5d is engaged is formed in the mating boss portion 41a.

In the configuration as described above, the claws 5d of the diaphragm spring 5 engage with the slits 41b formed in the pressure plate 4, thereby prohibiting relative rotation of the diaphragm spring 5 with respect to the output side rotary member 2 It is done. For this reason, it is possible to suppress the wear of the supporting projections 2a of the output side rotating body 2 supporting the diaphragm spring 5 and the supporting projections 19a of the supporting plate 19 in the same manner as described above. Also, the hysteresis torque is stabilized.

Sixth Embodiment

11 and 12 show a sixth embodiment. This embodiment is different from the first embodiment mainly in that a clip 72 for suppressing the vibration of the release member 6 is provided. In the following, the force to describe the portion related to this clip 72 is basically the same as that of the first embodiment.

As described above, the clip 72 is a member for restricting the axial movement of the release member 6 to suppress the vibration thereof. The clip 72 is formed of an elastically deformable thin plate member and has a substantially T-shape as is apparent from FIG. That is, the clip 72 has an attachment portion 72a formed extending in the circumferential direction of the support plate 19, and a pressure contact portion 72b extending inward in the radial direction of the attachment portion 72a. The mounting portion 72 a is fixed to the support plate 19 by rivets 20 for fixing the support plate 19 to the output side rotating body 2 at both ends in the longitudinal direction. Further, the pressure contact portion 72b can be elastically deformed with respect to the attachment portion 72a, and is mounted in a state of being elastically deformed, and pressure contact the engagement projection 6b of the release member 6 from the axially outer side to the inner side. Thus, the release member 6 is held between the clip 72 and the contact portion 5c of the diaphragm spring 5 to suppress the vibration of the release member 6 during operation.

In the configuration as described above, the release member 6 is held between the support plate 19 and the clip 72, and the vibration thereof is suppressed. For this reason, there is no variation in the out-of-clutch amount, which improves the out-of-clutch release. Furthermore, since the release member 6 is united with the other members by the clip 72 when transporting the device, it is possible to prevent the release member 6 from falling off during transportation.

Seventh Embodiment

A seventh embodiment is shown in FIG. This embodiment differs from the sixth embodiment only in the shape of the clip, and the other configurations are the same.

The clip 74 of the seventh embodiment has a mounting portion 74a formed in an annular shape, and a plurality of pressure contact portions 74b extending radially inward from the mounting portion 74a. The mounting portion 74 a is fixed to the support plate 19 by rivets 20 for fixing the support plate 19 to the output side rotating body 2. Further, the press-contacting portion 74b can be elastically deformed with respect to the mounting portion 74a, and press-contacts the engaging projection 6b of the release member 6 from the axially outer side to the inner side. In this manner, the release member 6 is held between the clip 74 and the contact portion 5c of the diaphragm spring 5 so that the vibration of the release member 6 during operation is suppressed. Eighth Embodiment

An eighth embodiment is shown in FIG.

FIG. 14 shows an embodiment of a clutch device for a motorcycle according to the present invention for transmitting power from the engine crankshaft to the transmission and for interrupting the power by operating the release mechanism. is there. This clutch device includes a clutch housing 101, an output side rotating body 102, a clutch portion 103 for transmitting and receiving power between the clutch housing 101 and the output side rotating body 102, and a pressure plate 104. And a diaphragm spring 105 and a release member 106.

The clutch housing 101 has a disk-shaped portion 110 and a cylindrical portion 111 which also extends outward in the axial direction (rightward in FIG. 14) of the outer circumferential side force of the disk portion 110. An input gear 113 is attached to the disc portion 110 via a plurality of rubber members 112. The input gear 113 is engaged with a drive gear (not shown) fixed to a crankshaft on the engine side. The rubber member 112 is provided to absorb vibration from the engine, and another coil spring or the like may be used. The cylindrical portion 111 is formed with a plurality of recessed portions which are recessed radially outward at a portion on the inner peripheral side, and a plurality of notches extending in the axial direction are formed at predetermined intervals in the circumferential direction. . This notch is for releasing the lubricating oil inside to the outer peripheral side.

The output side rotating body 102 is disposed on the inner peripheral portion of the clutch housing 101. The output side rotating body 102 is formed in a substantially disc shape, and splines 115 are formed on the outer peripheral portion, and spline holes 116 are formed on the inner peripheral portion. The inner peripheral spline hole 116 is in mesh with the input shaft 117 of the transmission, and the output side rotating body 102 is axially oriented with respect to the input shaft 117 by a nut 117 a screwed into the tip of the input shaft 117. It is designed to be fixed immovably. Further, a disc-like friction flange 118 further extending radially outward is formed at the axially inner end portion of the outer peripheral portion of the output side rotating body 102. Furthermore, on the outer periphery of the axially outer surface of the output side rotating body 102 A plurality of axially projecting bosses 102a are formed at predetermined intervals in the circumferential direction, and an axially projecting inlay projection 102b is formed on the inner peripheral end of the boss 102a. There is.

Further, a support plate 119 for supporting the diaphragm spring 105 on the output side rotating body 102 is fixed to the boss 102 a of the output side rotating body 102 by a bolt 120. The support plate 119 is an annular member, and the inner peripheral end thereof is supported by the inlay projection 102 b of the output side rotating body 102. Further, on the outer peripheral side portion of the support plate 119, an annular support protrusion 119a which protrudes inward in the axial direction is formed. A thrust plate 121 is provided between the inner peripheral portion of the input gear 113 and the inner peripheral portion of the output side rotating body 102.

The clutch portion 103 has two first clutch plates 125 and one second clutch plate 126. The two clutch plates 125 and 126 are both formed annularly and alternately arranged in the axial direction. Further, a plurality of engaging projections projecting outward are formed on the outer peripheral portion of the first clutch plate 125, and the engaging projections are formed on the inner peripheral portion of the cylindrical portion 111 of the clutch housing 101. It is in the recess. Also, the first clutch plate 125 has friction linings on both sides. In the second clutch plate 126, splines are formed on the inner peripheral portion, and splines on the inner peripheral portion are engaged with splines 115 formed on the outer periphery of the output side rotating body 102! /.

[0119] <plate plate>

The pressure plate 104 is an annular member, and is disposed further axially outside the outermost first clutch plate 125. A plurality of teeth 104 a are formed so as to protrude inward in the axial direction on the inner peripheral portion of the pressure plate 104, and the plurality of teeth 104 a are engaged with the outer peripheral splines 115 of the output side rotating body 102. There is. Further, an annular projecting portion 104b that protrudes in the axial direction is formed at the outer peripheral end of the axially outer surface of the press shap plate 104, and a plurality of slits 104c are formed in the annular projecting portion 104b. ing. Further, on the inner peripheral end portion of the axially outer surface of the pressure plate 104, a pressing projection 104d that protrudes in the axial direction is formed. In addition, the annular projection 104b It protrudes axially outward from the protrusion 104d.

The diaphragm spring 105 is an annular plate member and has a pressing portion 105a as a disc spring on the outer peripheral portion, and a lever portion 0.05b on the inner peripheral portion for releasing the pressing of the pressing portion 105a. There is. Further, a plurality of engaging claws 105c are formed at the outer peripheral end of the pressing portion 105a, and a plurality of inner teeth 105d for engaging are formed at the inner peripheral end of the lever portion 105b. The claws 105 c are engaged with the slits 104 c formed in the projection 104 b of the pressure plate 104. An outer peripheral portion of the pressing portion 105a of the diaphragm spring 105 is supported by the support protrusion 119a of the support plate 119, and an inner peripheral portion presses the pressing protrusion 104d of the pressure plate 104.

In the state where such a diaphragm spring 105 is set as shown in FIG. 14, the pressing force of the disc spring presses the pressure plate 104 inward in the axial direction with a predetermined pressing force. Therefore, the first and second clutch plates 125 and 126 of the clutch portion 103 are held between the friction portion 118 of the output side rotating body 102 and the pressure plate 104.

The lever portion 105b of the diaphragm spring 105 is formed of a plurality of levers arranged radially. A wide slit is formed between two levers adjacent in the circumferential direction, and the boss 102 a of the output side rotating body 102 axially passes through the slit.

The release member 106 is an annular member, and holds the release bearing 130 at its inner periphery. Specifically, an aperture of the release bearing 130 is fitted to the inner peripheral portion of the release member 106, and similarly, a stop ring 131 is attached to the axially outer side of the water race at the inner peripheral portion. And, an axially outer shoulder portion of the tire race abuts on the retaining ring 131. Further, an outer tooth 106a for engagement is formed on the outer peripheral portion of the release member 106, and an inner tooth 105d formed on the inner peripheral portion of the diaphragm spring 105 is engaged with the outer tooth 106a. Further, at the outer peripheral portion of the release member 106, an outwardly projecting contact portion 106b is formed at the axially inner end portion, and a predetermined gap is formed on the axially outer side of the contact portion 106b. A ring 132 is provided. And the contact part 10 The inner peripheral end of the diaphragm spring 105b is sandwiched by 6b and a retaining ring 132. The release bearing 130 can be moved axially outward by the operation of the clutch lever of the motor cycle (not shown).

Next, the operation will be described.

In the state shown in FIG. 14, the pressing plate 105 is pressed inward in the axial direction with a predetermined pressing force by the pressing portion 105 a of the diaphragm spring 105, and the first and second clutch plates 125 and 126 of the clutch portion 103 output It is nipped between the friction portion 118 of the side rotating body 102 and the plate shap plate 104. In this case, the clutch is on, and the rotation input through the input gear 113 and the rubber member 112 is also transmitted to the first clutch plate 125 via the clutch housing 101 and the second clutch plate 126. The power is transmitted to the output side rotating body 102 and is transmitted to the input shaft 117 of the transmission.

On the other hand, when the driver grips the clutch lever, the operation force is transmitted to the release bearing 130 via the clutch wire or the like, and the release bearing 130 is moved axially outward. The movement of the release bearing 130 is transmitted to the lever portion 105b of the diaphragm spring 105 via the release member 106, and the inner peripheral portion of the lever portion 105b is moved axially outward. Then, the inner peripheral portion of the pressing portion 105a similarly moves outward in the axial direction with the outer peripheral portion of the diaphragm spring 105, that is, the portion supported by the support protrusion 119a of the support plate 119, and the pressing portion 105a It moves in the direction away from the pressing projection 104 d of the shear plate 104. As a result, the pressing force of the pressure plate 104 is released, and the clutch portion 103 is turned off. In this clutch off state, the rotation from the clutch housing 101 is not transmitted to the output side rotating body 102.

Here, at the time of the release operation of the clutch off, the operation force is reduced by the action of the lever portion 105b. More specifically, assuming that the pressing force by the pressing portion 105a of the diaphragm spring 105 is P, for example, the lever portion 105b has to be operated to release the pressing force P! /, The release load R is

R = P X (L1 / L2)

L1: The distance from the support portion of the pressing portion outer peripheral portion to the pressing point of the pressing portion inner peripheral portion L2: The distance from the support portion of the pressing portion outer peripheral portion to the contact portion with the release member of the lever portion. That is, the release load is reduced by the lever ratio (L1ZL2). Therefore, when setting the same release load as the conventional device, the pressing load of the pressing portion 105a can be increased by the lever ratio, and when making the transmission capacity of the clutch the same, the number of clutch plates Can be reduced. Therefore, the clutch device can be made compact.

Further, in this device, when the release member 106 is subjected to the release operation, the operation force is transmitted to the output side rotating body 102 through the diaphragm spring 105 and the support plate 119. Here, since the output side rotation body 102 is axially immovably fixed to the input shaft 117 by the nut 117a, the release operation force is finally received by the nut 117a and the input shaft 117. Become. Therefore, it is possible to suppress the wear and damage of each part during which the release operation force acts on the members constituting the clutch device, for example, the thrust plate 121 and the like.

Further, in this device, the internal teeth 105d at the tip of the lever portion 105b are engaged with the external teeth 106a of the release member 106, and relative rotation between the diaphragm spring 105 and the release member 106 is prohibited. Therefore, wear at the contact portion between the diaphragm spring 105 and the release member 106 can be suppressed. Furthermore, since the outer peripheral portion of the diaphragm spring 105 is supported by the projecting portion 104b of the pressure plate 104, centering of the diaphragm spring 105 can be performed with a simple configuration and well, and the spring characteristics can be stabilized. Can. Also, since the claws 105c on the outer peripheral portion of the diaphragm spring 105 are engaged with the slits 104c of the pressure plate 104, relative rotation between the both is prohibited, and wear at the contact portion between both can be suppressed. .

Furthermore, in this device, since the diaphragm spring 105 is supported by the support plate 119 fixed to the output side rotating body 102! /, It is relatively short in the axial direction,! Support the diaphragm spring 105.

Other Embodiments

In each of the above-described embodiments, the present invention can be similarly applied to the present invention even in the case where the transmission path of the force rotation is reverse as described in the case where the rotation is input from the input gear and output to the output side rotating body. It can apply.

Industrial applicability

In the motorcycle clutch device according to the first aspect of the present invention, the member holding the release mechanism is

Since the centering is performed and the relative rotation with the pressing member is prohibited, the release operation can be smoothly performed for a long time.

In the motorcycle clutch device according to the second aspect of the invention, the relative rotation between the pressing member and the member supporting the same can be restricted, and wear of the pressing member and the member supporting the same can be suppressed. Also, the hysteresis torque can be stabilized by suppressing the contact between the pressing member and the member supporting the pressing member.

In the clutch apparatus for a motorcycle according to the third aspect of the invention, the vibration of the release member can be suppressed to suppress the variation in the amount of disconnection of the clutch, and the disconnection of the clutch can be improved. In addition, by holding the release member by the clip, it is possible to prevent the release member from falling off when transporting the device.

In the clutch device for motorcycle according to the fourth aspect of the present invention, the radial position of the pressure member such as the diaphragm spring is stabilized, and the spring characteristics as the clutch pressure and the clutch release force (release operation force) are stabilized. It can be done.

In the clutch apparatus for a motor cycle according to the fifth aspect of the present invention, particularly in the case of a pull type clutch apparatus configured to perform clutch operation using a lever mechanism, wear of each part due to the release operation force is suppressed. be able to.

Claims

The scope of the claims

[1] A motorcycle clutch device for transmitting power of an input side member to an output side member and interrupting power transmission by operation of a release mechanism,

A clutch housing connected to one of the input side member and the output side member; a rotating body provided on an inner circumferential portion of the clutch housing and connected to the other of the input side member and the output side member;

A clutch portion having one or more plate members for transmitting and blocking power between the clutch housing and the rotating body;

A pressure plate for pressing a plate member of the clutch portion;

A pressing member comprising: a pressing portion pressing the pressure plate; and a lever portion for amplifying the operating force of the release mechanism by a predetermined lever ratio to release pressing force by the pressing portion.

A release member for holding the release mechanism and transmitting the operating force of the release mechanism to the lever portion;

A restriction mechanism which centers the release member and prohibits relative rotation of the release member with respect to the pressing member;

Clutch device for motorcycles.

[2] The motorcycle clutch device according to claim 1, wherein the pressing member is a diaphragm spring having the pressing portion at an outer peripheral portion and the lever portion at an inner peripheral portion.

[3] The rotating body has a friction portion facing the pressure plate at an outer peripheral portion thereof,

The clutch portion has a first clutch plate engaged with the clutch housing and a second clutch plate engaged with the rotary body, and the first and second clutch plates are friction portions of the rotary body. Sandwiched between the and the pressure plate,

A clutch device for a motorcycle according to claim 1.

[4] The diaphragm spring is

An outer circumferential portion of the pressing portion presses the pressure plate, and an inner circumferential portion of the pressing portion is supported by the outer circumferential portion of the rotating body,

An inner peripheral portion of the lever portion is moved to the pressure plate side by the release mechanism. Be moved,

The clutch device for a motorcycle according to claim 2.

[5] The release member is an annular member having a plurality of radially outwardly projecting claws on its outer periphery,

The rotating body is connected to the pressing member so as not to be relatively rotatable, and has a rotating body main body, and a support plate fixed to the rotating body main body to support the pressing member together with the rotating body main body.

The support plate has a plurality of engagement notches at its inner periphery, with which the plurality of claws of the release member engage.

The clutch device for a motorcycle according to claim 1, wherein the restriction mechanism is configured by the plurality of claws and a plurality of engagement notches.

[6] The release member is an annular member having a plurality of protrusions projecting in the axial direction on the side surface,

The pressing member has a plurality of slits engaged with the plurality of projections of the release member,

The rotating body is connected non-rotatably with the pressing member, and has a rotating body main body, and an annular support plate fixed to the rotating body main body to support the pressing body together with the rotating body main body. ,

The restriction mechanism is configured by an outer peripheral surface of the release member, an inner peripheral surface of the support plate in contact with an outer peripheral surface of the release member, the plurality of protrusions, and the plurality of slits. ,

A clutch device for a motorcycle according to claim 1.

[7] The release member is an annular member having a plurality of recesses recessed inward in the radial direction at the outer peripheral portion,

The rotating body has a plurality of claws that are non-rotatably coupled to the pressing member and engage with the plurality of recesses of the release member, respectively.

The clutch device for a motorcycle according to claim 1, wherein the restriction mechanism is configured by the plurality of recessed portions and a plurality of claws.

[8] A clutch device for a motor cycle, which transmits power of the input side member to the output side member and shuts off power transmission by operation of the release mechanism,

A clutch housing connected to one of the input side member and the output side member; a disc-shaped rotating body provided on an inner circumferential portion of the clutch housing and connected to the other of the input side member and the output side member ,

A pressure plate for pressing a plate member of the clutch portion, a pressing portion supported by the rotating body and pressing the pressure plate, and an operating force of the release mechanism are amplified at a predetermined lever ratio. A pressing member having a lever portion for releasing pressing force by the pressing portion;

A clutch device for a motor cycle, comprising: an anti-rotation mechanism that prohibits relative rotation of the pressing member relative to the rotating body.

[9] The pressing member has a claw at its outer periphery,

The pressure plate has a slit that engages with the rotating body so as not to be rotatable relative to the rotating body, and the claw of the pressing member engages with the slit.

The anti-rotation mechanism is constituted by a claw of the pressing member and a slit of the pressure plate.

A clutch device for a motorcycle according to claim 8.

[10] The claws are provided to project radially outward at the outer peripheral portion of the pressing member,

The pressure plate has a protrusion that protrudes in the axial direction and supports the outer periphery of the pressing member, and the slit is formed in the protrusion.

The clutch device for a motorcycle according to claim 9.

11. The clutch device for a motor cycle according to claim 10, wherein the projecting portion of the pressure plate is formed in an annular shape.

[12] A clutch device for a motor cycle, which transmits the power of the input side member to the output side member and cuts off the power transmission by the operation of the release mechanism, A clutch housing connected to one of the input side member and the output side member; a rotating body provided on an inner circumferential portion of the clutch housing and connected to the other of the input side member and the output side member;

A vibration suppressing mechanism for suppressing vibration of the release member;

Clutch device for motorcycles.

13. The motorcycle clutch device according to claim 12, wherein the vibration suppressing mechanism is a clip that holds the release member in a sandwiching manner with the pressing member.

[14] The rotating body includes a rotating body main body, and a support plate fixed to the rotating body main body and supporting the pressing member with the rotating body main body,

The clip has an attachment portion attached to the support plate, and an elastically deformable pressure contact portion extending from the attachment portion and pressing a side surface of the release member toward the pressing member.

A clutch device for a motorcycle according to claim 13.

[15] The attachment portion of the clip is formed in an annular shape, and the press-contacting portion of the clip extends inward from the annular attachment portion to press-contact the side surface of the release member.

A clutch device for a motorcycle according to claim 14.

[16] A motorcycle clutch device for transmitting power of an input side member to an output side member and interrupting power transmission by operation of a release mechanism,

A clutch housing connected to one of the input side member and the output side member; and an inner circumferential portion of the clutch housing, the clutch housing being provided on the input side member and the output side member A rotating body connected to the other,

A pressing plate for pressing a plate member of the clutch unit, a pressing unit for pressing the pressing plate, and an operating force of the release mechanism are amplified by a predetermined lever ratio to be pressed by the pressing unit. A pressing member having a lever portion for releasing the

A pressing member support that supports the pressing member in the radial direction and performs positioning in the radial direction;

Clutch device for motorcycles.

[17] The pressing member supporting portion is an axial direction projecting portion which axially protrudes on the outer peripheral portion of the pressure plate to the side where the pressing member is disposed, and supports a plurality of places on the outer periphery of the pressing member. The clutch device for a motorcycle according to claim 16.

[18] The clutch apparatus for a motorcycle according to claim 17, wherein the axial protrusion is an annular protrusion provided to protrude in the axial direction on an outer peripheral portion of the pressure plate.

[19] A motorcycle clutch device for transmitting power of an input side member to an output side member and interrupting power transmission by operation of a release mechanism,

A clutch housing connected to one of the input side member and the output side member, and a rotation provided at an inner peripheral portion of the clutch housing and axially immovably connected to the other of the input side member and the output side member Body,

A pressing plate for pressing a plate member of the clutch unit, a pressing unit for pressing the pressing plate, and an operating force of the release mechanism are amplified by a predetermined lever ratio to be pressed by the pressing unit. And a pressing member having a lever portion for releasing the

An outer peripheral portion of the pressing portion is supported by the rotating body, and an inner peripheral portion of the pressing portion is the pre The pusher plate is pressed, and the inner peripheral portion of the lever portion is moved by the release mechanism to the opposite side to the pressure plate.

Clutch device for motorcycles.

[20] The rotating body is

A rotating body main body provided with the clutch portion;

A support plate disposed so as to sandwich the pressing member together with the pressure plate, fixed to the main body of the rotating body, and supporting an outer peripheral portion of the pressing member;

have,

20. A clutch device for a motorcycle according to claim 19.

[21] A plurality of slits are radially formed in the lever portion of the pressing member,

The rotating body main body has a boss that passes through the slit and extends in the opposite direction to the side of the pressing member on which the plate is disposed.

The support plate is fixed to the axial end face of the boss!

A clutch device for a motorcycle according to claim 20.