JP4476342B2 - Motorcycle clutch device - Google Patents

Description

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

  In general, in a motorcycle such as a motorcycle or a buggy, a multi-plate clutch device is used to transmit or block power from an engine to a transmission. The multi-plate clutch device includes a clutch housing connected to the crankshaft side of the engine, an output-side rotating body connected to the transmission side, a clutch unit for transmitting and cutting power between them, and a clutch And a pressure plate for pressing the part. In the clutch portion, first clutch plates that engage with the clutch housing and second clutch plates that engage with the output side rotating body are alternately arranged.

Then, these clutch plates are brought into pressure contact with a pressing member such as a spring via a pressure plate, whereby the rotation of the crankshaft is transmitted to the transmission side. Further, when the clutch is turned off (power transmission is cut off), the release mechanism is operated by the driver holding the clutch lever, and the release mechanism releases the pressing of the pressing member against the clutch plate. Power transmission between the two clutch plates is cut off.
JP 2003-222159 A

  A conventional clutch device is provided with a damper mechanism that elastically connects the crankshaft and the clutch housing in the rotational direction. The damper mechanism has an input gear connected to the crankshaft, and a plurality of rubber members that elastically connect the clutch housing and the input gear. The torsional vibration input to the input gear by the rubber member can be suppressed from being transmitted to the clutch housing.

  However, in this configuration, since the torsional vibration is absorbed by using the elastic force of the rubber member, for example, a large torsion angle in the damper mechanism cannot be secured. Further, since the torsional rigidity of the damper mechanism is almost determined by the material of the rubber member, the adjustment range of the torsional rigidity is small.

  Thus, in the conventional clutch device, the degree of freedom in designing the damper mechanism is low, and it is difficult to adjust the torsional characteristics of the damper mechanism according to the characteristics of the motorcycle.

  An object of the present invention is to increase the degree of design freedom in a motorcycle clutch device.

A motorcycle clutch device according to a first aspect of the present invention is a clutch device that blocks power transmission from an input side member to an output side member by operation of a release mechanism. The clutch device includes a first rotating body, a second rotating body, a first coil spring, and a clutch mechanism. The first rotating body is a member connected to one of the input side member and the output side member, and has a plurality of first contact portions. The second rotating body is a member arranged so as to be rotatable with respect to the first rotating body, the retaining plate body arranged on the side of the first rotating body, and the retaining of the first rotating body. From the outer periphery of the retaining plate main body disposed between the clutch housing disposed on the opposite side of the plate body and the first abutting portion adjacent to the first abutting portion so as to be able to abut in the rotational direction. A second abutting portion extending toward the clutch housing; and a fixing portion extending radially inward from an end of the second abutting portion and fixed to the clutch housing. The first coil spring is disposed radially inward of the first contact portion, and elastically connects the first rotating body to the second rotating body in the rotating direction. The clutch mechanism is supported by a clutch housing, and interrupts power transmission from the first rotating body to the other of the input side member and the output side member. The second rotating body is restricted from moving in the axial direction relative to the first rotating body when the retaining plate body and the clutch housing are in contact with the first contact portion in the axial direction.

  For example, when power transmission is started by the clutch mechanism, compression of the first coil spring is started between the first rotating body and the second rotating body, and relative rotation between the first rotating body and the second rotating body is further increased. As the travel proceeds, the second contact portion comes into contact with the first contact portion. As a result, power is transmitted from the first rotating body to the second rotating body while absorbing torsional vibration.

  In this clutch device, the first coil spring is disposed radially inward of the first contact portion. In other words, the first contact portion is disposed on the radially outer side of the first coil spring. For this reason, the relative rotation angle of the first and second rotating bodies until the first contact portion comes into contact with the second contact portion can be set large. That is, in this clutch device, the torsion angle of the damper mechanism can be set large, and the degree of design freedom can be increased.

  A motorcycle clutch device according to a second invention is the clutch device according to the first invention, wherein the first rotating body is arranged radially inside the first contact portion and houses the first coil spring. Has an opening. The rotational dimension of the first contact portion is smaller than the rotational dimension of the first opening.

  In this clutch device, since the first contact portion has a rotational dimension smaller than that of the first opening, the first and second rotating bodies for contacting the first contact portion with the second contact portion. The relative rotation angle of can be set larger.

  A motorcycle clutch device according to a third invention is the clutch device according to the first or second invention, wherein the first rotating body includes a main body having a first opening and a plurality of radially extending outwards from the main body. The first abutting portion and an annular portion that is arranged on the radially outer side of the plurality of first abutting portions and connects the plurality of first abutting portions.

  In this clutch device, since the plurality of first contact portions are connected by the annular portion, the strength of the peripheral portion of the first contact portion can be increased.

  A motorcycle clutch device according to a fourth invention is the clutch device according to the third invention, wherein the first rotating body has a second opening formed by a main body portion, a first contact portion and an annular portion. ing. The second contact portion is disposed in the second opening.

  In this clutch device, in addition to the first opening, since the second opening in which the second contact portion is disposed is formed in the first rotating body, the opening ratio of the first rotating body is increased. Thereby, weight reduction of a clutch apparatus is realizable.

  A motorcycle clutch device according to a fifth invention is the clutch device according to the fourth invention, wherein the second opening has a long hole formed between the rotation directions of the adjacent first contact portions and extending in the rotation direction. is doing. The second contact portion is disposed in the long hole.

  In this clutch device, since the second contact portion is disposed in the long hole, it is possible to ensure a large relative rotation angle between the first and second rotating bodies while ensuring the strength of the first rotating body.

A motorcycle clutch device according to a sixth invention is the clutch device according to any one of the first to fifth inventions, further comprising a second coil spring. The second coil spring is a member for elastically connecting the first rotating body to the second rotating body in the rotational direction, and compression of the first coil spring is started by relative rotation of the first and second rotating bodies. After being done, it is provided so as to be compressed between the first and second rotating bodies.

  In this clutch device, since the compression of the second coil spring is started after the first coil spring is compressed, a damper mechanism having multistage characteristics can be realized by the first and second coil springs. Thereby, the torsional characteristics can be adjusted according to the characteristics of the motorcycle, and the vibration damping performance can be enhanced.

  A motorcycle clutch device according to a seventh aspect is the clutch device according to any one of the first to sixth aspects, wherein the first contact portion is in contact with the second contact portion in the rotational direction. A first abutting portion main body, a first projecting portion projecting in an axial direction from the first abutting portion main body so as to be able to abut on the retaining plate main body, and an axial first projecting portion from the first abutting portion main body And a second projecting portion provided so as to be able to come into contact with the clutch housing.

  A motorcycle clutch device according to an eighth invention is the clutch device according to the seventh invention, wherein the radial position of the first protrusion is substantially the same as the radial position of the second protrusion.

  A motorcycle clutch device according to a ninth aspect is the clutch device according to the seventh or eighth aspect, wherein the rotational direction position of the first protrusion is substantially the same as the rotational direction position of the second protrusion.

  A motorcycle clutch device according to a tenth invention is the clutch device according to any one of the seventh to ninth inventions, wherein the lengths of the first projecting portion and the second projecting portion in the rotational direction are the first contact. Shorter than the length of the main body in the rotational direction.

  The motorcycle clutch device according to an eleventh invention is the clutch device according to any of the seventh to tenth inventions, wherein the first protrusion and the second protrusion are substantially the same in the radial direction as the second contact part. Placed in position.

  With the motorcycle clutch device according to the present invention, the degree of freedom in design can be increased.

<Overall configuration>
FIG. 1 is a schematic cross-sectional view of a motorcycle clutch device 100. FIG. 2 is a schematic plan view of the clutch device 100. 1 is a cross-sectional view taken along the line II of FIG. In FIG. 1, the clutch mechanism C is omitted. The right side in FIG. 1 is the axially outer side (an example of the first side in the axial direction), and the left side in FIG. 1 is the axially inner side (an example of the second side in the axial direction).

  The motorcycle clutch device 100 shown in FIGS. 1 and 2 transmits the power generated by the engine from the crankshaft to the transmission, and interrupts the power transmission by the operation of the release mechanism. In the clutch device 100, power transmission is released by pushing the release bearing inward in the axial direction.

  The clutch device 100 includes a damper mechanism D that absorbs and attenuates torsional vibrations, and a clutch mechanism C that blocks power transmission.

<Damper mechanism>
The damper mechanism D includes an input gear 8 (an example of a first rotating body), an intermediate rotating body 1 (an example of a second rotating body), two first coil springs 12, two second coil springs 13, And four rubber members 16.

(1) Input gear The input gear 8 is a substantially annular member to which power generated by the engine is input, and meshes with a drive gear (not shown) fixed to the engine crankshaft. Specifically, the input gear 8 includes a main body portion 81, four first contact portions 87, and a ring gear 88 (an example of an annular portion). The input gear 8 is made of, for example, zinc die cast, and the main body 81, the first contact portion 87, and the ring gear 88 are integrally formed.

  The main body 81 is a substantially disk-shaped portion, and has four first openings 84 and four notches 89. The first opening 84 accommodates the first coil spring 12 and the second coil spring 13. The first opening 84 is disposed on the radially inner side of the first contact portion 87. A notch 89 is disposed between the rotation directions of the first opening 84. When viewed from the axial direction, the shape of the notch 89 is substantially the same as the shape of the fixing portion 95 of the retaining plate 9.

  The dimension of the first opening 84 in the rotational direction is substantially the same as the free length of the first coil spring 12, but is larger than the free length of the second coil spring 13. That is, the free length of the second coil spring 13 is smaller than the free length of the first coil spring 12. For this reason, a gap is secured in the rotational direction between the second coil spring 13 and the edge of the first opening 84. Thereby, after the compression of the first coil spring 12 is started, the compression of the second coil spring 13 is started. That is, with these configurations, the torsional characteristics of the damper mechanism D can be made in two stages.

  The first contact portion 87 is a portion extending radially outward from the main body portion 81, and implements a stopper mechanism S together with a second contact portion 93 (described later) of the retaining plate 9. The first contact portion 87 is disposed on the radially outer side of the first opening 84. The rotational dimension of the first contact portion 87 is smaller than the rotational dimension of the first opening 84. The center of the first abutting portion 87 in the rotation direction substantially coincides with the center of the first opening 84 in the rotation direction.

  The first contact portion 87 includes a first protrusion 82 that protrudes outward in the axial direction, and a second protrusion 83 that protrudes inward in the axial direction. The first protrusion 82 can contact the clutch housing 7 of the intermediate rotating body 1 in the axial direction. The second protrusion 83 can contact the retaining plate 9 of the intermediate rotating body 1 in the axial direction. The second protrusion 83 has substantially the same radial position and rotational position as the first protrusion 82. In addition to the function of the stopper mechanism S, the first projecting portion 82 and the second projecting portion 83 also realize a function of stabilizing the axial position of the input gear 8 with respect to the intermediate rotating body 1. is doing.

  The ring gear 88 is disposed on the outer side in the radial direction of the main body portion 81 and the first contact portion 87, and connects the four first contact portions 87. The ring gear 88 is a portion that meshes with a drive gear (not shown).

  The input gear 8 has four second openings 85 formed by the main body portion 81, the first contact portion 87 and the ring gear 88. The 2nd opening 85 is arrange | positioned between the rotation directions of the adjacent 1st opening 84, and has the notch 89 of the main-body part 81, and the elongate hole 86 extended in circular arc shape in a rotation direction.

  The long hole 86 is a space in which a second contact portion 93 (described later) of the retaining plate 9 moves in the rotation direction, and is formed between the rotation directions of the adjacent first contact portions 87. A second contact portion 93 is disposed in the long hole 86. The radial position of the long hole 86 is substantially the same as the radial position of the first contact portion 87. The long hole 86 extends to the outside of the first opening 84 in the radial direction. That is, when viewed from the radial direction, the end of the long hole 86 overlaps the end of the first opening 84.

(2) Intermediate Rotating Body The intermediate rotating body 1 is provided to be rotatable with respect to the input gear 8 and functions as a member on the output side of the damper mechanism D. Specifically, the intermediate rotator 1 has a clutch housing 7 and a retaining plate 9 fixed to the clutch housing 7.

  The clutch housing 7 is a member made of, for example, a sheet metal, and is disposed outside the input gear 8 in the axial direction. The clutch housing 7 has a housing main body 71 and a connecting portion 72 provided on the outer peripheral portion of the housing main body 71.

  The housing body 71 is a portion to which the retaining plate 9 is fixed, and can abut on the first projecting portion 82 of the input gear 8 in the axial direction. The connection part 72 is a part connected with the clutch mechanism C, and supports the two first clutch plates 31 of the clutch part 3 so as to be integrally rotatable. As shown in FIG. 2, the connecting portion 72 has a generally wave shape and is bent inward and outward in the radial direction. The connecting portion 72 is integrally formed with the housing main body 71 by, for example, pressing. A plurality of external teeth 31 a of the first clutch plate 31 are engaged with the connecting portion 72. For this reason, the first clutch plate 31 can rotate integrally with the connecting portion 72 and can move in the axial direction.

  The retaining plate 9 is a sheet metal member fixed to the clutch housing 7 and is disposed on the inner side in the axial direction of the input gear 8. The retaining plate 9 has a retaining plate main body 94 and a stopper portion 99 provided on the outer peripheral portion of the retaining plate main body 94. The outer peripheral portion of the retaining plate main body 94 can contact the second protrusion 83 in the axial direction.

  The stopper portion 99 is a portion that constitutes the stopper mechanism S together with the first contact portion 87, and includes a second contact portion 93 and a fixing portion 95. The second contact portion 93 extends in the axial direction from the outer peripheral portion of the retaining plate main body 94. The fixing portion 95 extends radially inward from the end portion of the second contact portion 93 and is fixed to the housing body 71 by the rivet 18.

  The second contact portion 93 passes through the second opening 85 in the axial direction. More specifically, the long hole 86 of the second opening 85 is penetrated in the axial direction, and the inside of the long hole 86 can be moved in the rotation direction. The second contact portion 93 is disposed at substantially the same radial position so as to be able to contact the first contact portion 87 in the rotational direction. By the first contact portion 87 and the stopper portion 99, a stopper mechanism S that restricts the relative rotation between the intermediate rotating body 1 and the input gear 8 within a range of a predetermined angle is realized.

  A predetermined interval is maintained between the clutch housing 7 and the retaining plate 9 in the axial direction by the stopper portion 99. Between the clutch housing 7 and the retaining plate 9 in the axial direction, the aforementioned input gear 8 is disposed. A cone spring 11 is disposed between the inner periphery of the main body 81 and the inner periphery of the retaining plate main body 94. The inner peripheral portion of the main body 81 is pressed against the inner peripheral portion of the housing main body 71 by the cone spring 11. With these configurations, the axial position of the input gear 8 with respect to the intermediate rotating body 1 is stabilized. In this state, a slight gap is secured between the first projecting portion 82 and the housing body 71 in the axial direction, and a slight gap is secured between the second projecting portion 83 and the retaining plate body 94 in the axial direction. Is secured. That is, the first protrusion 82 and the second protrusion 83 assist the positioning of the input gear 8 with respect to the intermediate rotating body 1.

(2) First coil spring, second coil spring, rubber member The first coil spring 12 and the second coil spring 13 are supported by the clutch housing 7 and the retaining plate 9 so as to be elastically deformable in the rotational direction. Specifically, the clutch housing 7 and the retaining plate 9 form two first support portions 73 and two second support portions 74.

  The first support portion 73 is a portion that supports the first coil spring 12, and the second support portion 74 is a portion that supports the second coil spring 13. Since the rotational dimension of the first support 73 is substantially the same as the free length of the first coil spring 12, the end of the first coil spring 12 is supported by the first support 73 in the rotational direction. Since the rotational dimension of the second support part 74 is substantially the same as the free length of the second coil spring 13, the end part of the second coil spring 13 is supported by the second support part 74 in the rotational direction.

  In the present embodiment, the damper mechanism D has three-stage torsional characteristics. Specifically, in the first stage of torsional characteristics, the first coil spring 12 is compressed. In the second stage of torsional characteristics, the first coil spring 12 and the second coil spring 13 are compressed. In the third stage of torsional characteristics, the first coil spring 12, the second coil spring 13, and the rubber member 16 are compressed. A rubber member 16 to be compressed at the third stage is disposed inside the first coil spring 12 and the second coil spring 13.

  The two first coil springs 12 are arranged to act in parallel. The two second coil springs 13 are arranged to act in parallel. The four rubber members 16 are arranged so as to act in parallel. The free length of the second coil spring 13 is smaller than the free length of the first coil spring 12. The free length of the rubber member 16 is smaller than the free length of the second coil spring 13.

  With these configurations, the torsional characteristics of the damper mechanism D can be made in three stages.

<Clutch mechanism>
The clutch mechanism C includes an output rotating body 2, a clutch portion 3, a pressure plate 4, a diaphragm spring 5, and a support plate 6.

  The output rotating body 2 is disposed on the radially inner side of the connecting portion 72 of the clutch housing 7 and is connected to the input shaft 17 (output side member) of the transmission. An annular support plate 6 is fixed to the output rotating body 2 by a plurality of bolts 44.

  The clutch unit 3 includes two first clutch plates 31 and a second clutch plate 32 disposed between the first clutch plates 31 in the axial direction.

  The first clutch plate 31 is supported by the connecting portion 72 so as to be integrally rotatable and movable in the axial direction. The second clutch plate 32 is supported by the output rotating body 2 so as to be integrally rotatable and movable in the axial direction. In a state where the power transmission is interrupted, a slight gap is secured between the first clutch plate 31 and the second clutch plate 32.

  The pressure plate 4 is an annular member disposed so as to face the output rotator 2, and is supported by the output rotator 2 and the support plate 6 so as to be integrally rotatable and movable in the axial direction.

  The diaphragm spring 5 is disposed in a compressed state between the output rotator 2 and the support plate 6 in the axial direction. The clutch portion 3 is sandwiched between the output rotating body 2 and the pressure plate 4 by the elastic force of the diaphragm spring 5. When power transmission is interrupted, the lever portion 51 of the diaphragm spring 5 is pushed inward in the axial direction by the release bearing 10 of the release mechanism.

<Operation of clutch device>
In the state shown in FIG. 1 (clutch-on state), the pressure plate 4 is pressed inward in the axial direction by the diaphragm spring 5 with a predetermined elastic force, and the first clutch plate 31 and the second clutch plate 32 of the clutch part 3 are output rotated. It is sandwiched between the body 2 and the pressure plate 4. In this state, power is transmitted from the crankshaft to the clutch mechanism C via the damper mechanism D. More specifically, the power input to the input gear 8 is transmitted to the first clutch plate 31 via the intermediate rotator 1 and further to the input shaft of the transmission via the second clutch plate 32 and the output rotator 2. 17 is transmitted. At this time, the first contact portion 87 is in contact with the second contact portion 93, and power is transmitted via the stopper mechanism S.

  On the other hand, when the driver grips the clutch lever, the operating force is transmitted to the release bearing 10 via, for example, a clutch wire, and the release bearing 10 moves inward in the axial direction. As a result, the lever portion 51 of the diaphragm spring 5 moves inward in the axial direction, and the pressing force on the pressure plate 4 is released. The first clutch plate 31 and the second clutch plate 32 can be relatively rotated between the output rotator 2 and the pressure plate 4. By these operations, transmission of power from the intermediate rotating body 1 to the output rotating body 2 is interrupted (clutch off state).

  Further, after the speed change operation, when the driver gradually releases the clutch lever, power transmission by the clutch device 100 is started. Specifically, the release bearing 10 moves outward in the axial direction, and the clutch portion 3 is sandwiched between the pressure plate 4 and the output rotating body 2. As a result, the input gear 8 rotates with respect to the intermediate rotator 1, and compression of the first coil spring 12 is started between the input gear 8 and the intermediate rotator 1. When the relative rotation of the input gear 8 and the intermediate rotating body 1 proceeds, compression of the two input gears 8 in addition to the first coil spring 12 is started. When the relative rotation of the input gear 8 and the intermediate rotator 1 further proceeds, the compression of the four rubber members 16 is started. Finally, in the stopper mechanism S, the second contact portion 93 of the retaining plate 9 contacts the first contact portion 87 of the clutch housing 7 in the rotational direction, and the stopper mechanism S is moved from the input gear 8 to the intermediate rotating body 1. Power is transmitted through the.

<Features>
The characteristics of the clutch device 100 are summarized below.

(1)
In this clutch device 100, the first contact portion 87 is disposed on the outer side in the radial direction of the first coil spring 12, and therefore the input gear 8 until the first contact portion 87 contacts the second contact portion 93. In addition, the relative rotation angle of the intermediate rotating body 1 can be set large. That is, in this clutch device 100, the torsion angle of the damper mechanism D can be set large, and the degree of design freedom can be increased.

(2)
In this clutch device 100, since the rotation direction dimension of the first contact portion 87 is smaller than the rotation direction dimension of the first opening 84, the input gear for the first contact portion 87 to contact the second contact portion 93. 8 and the relative rotation angle of the intermediate rotator 1 can be set larger.

(3)
In the clutch device 100, since the plurality of first contact portions 87 are connected by the ring gear 88, the strength of the peripheral portion of the first contact portion 87 can be increased as compared with the case where the ring gear 88 is not provided. Thereby, the plate | board thickness of the input gear 8 can be made thin and the weight reduction of the clutch apparatus 100 is attained.

(4)
In this clutch device 100, in addition to the first opening 84, the second opening 85 in which the second contact portion 93 is disposed is formed in the input gear 8, so that the opening ratio of the input gear 8 is increased. Thereby, further weight reduction of the clutch apparatus 100 is attained.

(5)
In the clutch device 100, since the second contact portion 93 is disposed in the long hole 86, it is possible to ensure a large relative rotation angle between the input gear 8 and the intermediate rotating body 1 while ensuring the strength of the input gear 8.

(6)
In this clutch device 100, since the first coil spring 12 is supported by the clutch housing 7 and the retaining plate 9 so as to be elastically deformable in the rotational direction, the structure for supporting the first coil spring 12 has a simple structure. realizable.

(7)
In the clutch device 100, since the second contact portion 93 extends in the axial direction from the outer peripheral portion of the retaining plate body 94, the second contact portion 93 is minimized while minimizing the outer diameter of the retaining plate 9. The radial position can be set to the outside. Thereby, the weight reduction of the clutch apparatus 100 is realizable, ensuring the relative rotation angle of the input gear 8 and the intermediate | middle rotary body 1 large.

  Further, since the fixing portion 95 extends radially inward from the end portion of the second contact portion 93, the strength of the second contact portion 93 and the fixing portion 95 against the centrifugal force can be increased. For this reason, the 2nd contact part 93 and the fixing | fixed part 95 can be made into a plate-shaped part, and the weight reduction of the clutch apparatus 100 is realizable.

(8)
In this clutch device 100, since the connecting portion 72 extends in the axial direction from the outer peripheral portion of the housing main body 71 to which the retaining plate 9 is fixed, the strength of the entire intermediate rotating body 1 can be increased. For this reason, the plate | board thickness of the clutch housing 7 can be made thin and the weight reduction of the clutch apparatus 100 is realizable.

(9)
In this clutch device 100, since the clutch housing 7 is made of sheet metal, the weight of the clutch housing 7 can be reduced, and the weight of the entire device can be reduced.

(10)
In the clutch device 100, since the compression of the second coil spring 13 is started after the first coil spring 12 is compressed, the damper mechanism D having multistage characteristics is realized by the first coil spring 12 and the second coil spring 13. it can. Thereby, the torsional characteristics of the damper mechanism D can be adjusted according to the characteristics of the motorcycle, and the vibration damping performance of the clutch device 100 can be enhanced.

<Other embodiments>
The specific configuration of the present invention is not limited to the above-described embodiment, and various changes and modifications can be made without departing from the spirit of the present invention.

(1)
The configuration of the clutch mechanism C is not limited to the above-described embodiment. For example, the present invention can be applied not only to a pull type but also to a push type clutch device.

(2)
In the above-described embodiment, the input gear 8 is connected to the input side member, but the output rotating body 2 may be connected to the input side member.

(3)
In the above-described embodiment, the torsion characteristic of the damper mechanism D is a three-stage characteristic, but the torsion characteristic of the damper mechanism D is not limited to the three-stage characteristic.

The longitudinal cross-sectional view of a clutch apparatus. The top view of a clutch apparatus.

100 Clutch device 1 Intermediate rotating body (second rotating body)
2 Output rotator 3 Clutch part 4 Pressure plate 5 Diaphragm spring 6 Support plate 7 Clutch housing 8 Input gear (first rotator)
9 Retaining plate 12 1st coil spring 13 2nd coil spring 16 Rubber member 71 Housing main body 72 Connection part 73 1st support part 74 2nd support part 81 Main body part 82 1st protrusion part 83 2nd protrusion part 84 1st opening 85 Second opening 86 Long hole 87 First contact portion 88 Ring gear (annular portion)
89 Notch 93 Second contact portion 94 Retaining plate body 95 Fixing portion 99 Stopper portion S Stopper mechanism

Claims (11)

A clutch device for a motorcycle that cuts off power transmission from an input side member to an output side member by operation of a release mechanism,
A member connected to one of the input side member and the output side member, the first rotating body having a plurality of first contact portions;
A member disposed to be rotatable relative to the first rotating body, the retaining plate body disposed on a side of the first rotating body, and the retaining plate body of the first rotating body An outer peripheral portion of the retaining plate body disposed between the clutch housing disposed on the opposite side to the first contact portion and the first contact portion adjacent to the first contact portion so as to be able to contact the first contact portion in the rotational direction. A second rotating body having a second abutting portion extending from the end of the second abutting portion to the inside of the clutch housing in a radial direction and being fixed to the clutch housing ;
A first coil spring that is disposed radially inward of the first contact portion and elastically connects the first rotating body to the second rotating body in a rotating direction;
A clutch mechanism supported by the clutch housing and configured to block power transmission from the first rotating body to the other of the input side member and the output side member ,
The second rotating body is restricted from moving in the axial direction relative to the first rotating body when the retaining plate body and the clutch housing are in axial contact with the first contact portion.
Motorcycle clutch device. The first rotating body has a first opening that is disposed on the radially inner side of the first contact portion and accommodates the first coil spring;
The rotational dimension of the first contact portion is smaller than the rotational dimension of the first opening.
The motorcycle clutch device according to claim 1. The first rotating body is disposed on a radially outer side of the main body portion having the first opening, the plurality of first contact portions extending radially outward from the main body portion, and the plurality of first contact portions. An annular portion connecting the plurality of first contact portions,
The motorcycle clutch device according to claim 1 or 2. The first rotating body has a second opening formed by the main body portion, the first contact portion and the annular portion,
The second contact portion is disposed in the second opening.
The motorcycle clutch device according to claim 3. The second opening has a long hole formed between the rotation directions of the adjacent first contact portions and extending in the rotation direction.
The second contact portion is disposed in the elongated hole.
The motorcycle clutch device according to claim 4. A member for elastically connecting the first rotating body to the second rotating body in a rotational direction, and compression of the first coil spring is started by relative rotation of the first and second rotating bodies. And further comprising a second coil spring provided to be compressed between the first and second rotating bodies.
The motorcycle clutch device according to any one of claims 1 to 5 .   The first contact portion includes a first contact portion main body that can contact the second contact portion in the rotational direction, and protrudes in an axial direction from the first contact portion main body to contact the retaining plate main body. A first projecting portion provided in a possible manner, and a second projecting portion projecting from the first abutting portion main body to the opposite side of the first projecting portion in the axial direction so as to be capable of contacting the clutch housing. Have
The clutch device for a motorcycle according to any one of claims 1 to 6.   The radial position of the first protrusion is substantially the same as the radial position of the second protrusion.
The motorcycle clutch device according to claim 7.   The rotational direction position of the first protrusion is substantially the same as the rotational direction position of the second protrusion.
The motorcycle clutch device according to claim 7 or 8.   The length of the first protrusion and the second protrusion in the rotational direction is shorter than the length of the first contact part main body in the rotational direction.
The motorcycle clutch device according to any one of claims 7 to 9.   The first protrusion and the second protrusion are disposed at substantially the same radial position as the second contact portion.
The motorcycle clutch device according to any one of claims 7 to 10.

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