JPH0347994Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a clutch release device for a motorcycle, and more particularly to an improvement in the release mechanism of a multi-disc friction clutch device.

[Technical background of the invention and its problems]

A clutch release device for a motorcycle is disposed at an end of a transmission, and controls the power transmitted from the crankshaft to the transmission.

The multi-plate friction clutch device is engaged and engaged by the rotation of the release shaft supported by the clutch cover, and this rotation causes the release rack engaged with the release shaft to move in the axial direction.
It operates by moving the pressure plate.

The release rack is provided substantially parallel to the radial direction of the multi-plate friction clutch device, and generally has a circular cross section that is easily machined.

A clutch cover that covers the clutch is provided with a protruding release shaft cover portion that accommodates a release shaft. As a result, the clutch cover swelled significantly in the axial direction, resulting in an increase in the width of the engine. Furthermore, in motorcycles, since the footrest is disposed at the rear of the multi-plate friction clutch device, an increase in the width of the clutch cover significantly impairs the freedom of the rider's legs.

[Purpose of invention]

This invention was developed in consideration of the above circumstances, and it minimizes the amount of lateral protrusion of the clutch cover, reduces the engine width, and greatly increases the freedom of movement of the motorcycle driver's legs. An object of the present invention is to provide a clutch release device for a motorcycle that is improved in the following manner.

[Summary of the idea]

In order to achieve the above-mentioned object, the present invention includes a pressure plate that intermittents the frictional engagement of a multi-plate friction clutch by moving in the axial direction on a driven shaft, and a pressure plate that moves the pressure plate in the axial direction. In the clutch release device for a motorcycle, the clutch release device includes a release mechanism that operates the release mechanism, and a release shaft that operates the release mechanism, wherein the release shaft is arranged substantially parallel to the radial direction of the multi-disc friction clutch, and the multi-disc friction of the release shaft is arranged substantially parallel to the radial direction of the multi-disc friction clutch. It is characterized by a notch recess provided at a location facing the clutch.

[Example of idea]

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in FIGS. 1 to 5, a multi-plate friction clutch device for a motorcycle is provided at the end of an engine 1, and a footrest B fixed to a frame A is provided at the rear of the engine 1. . The multi-plate friction clutch device 2 is configured to transmit power from the crankshaft 2a to a transmission device (not shown) intermittently as appropriate. Specifically, power from the crankshaft 2a is transmitted by a drive gear 3 to a driven gear 5 rotatably mounted on a driven shaft 4, and then transmitted to a clutch housing 7 via a damper device 6. A clutch disk 8 and a clutch plate 10 meshed with a clutch hub 9 are housed in the clutch housing 7 in a meshed state, and due to the frictional engagement between the clutch disk 8 and the clutch plate 10, power is transferred from the clutch housing 7. is transmitted to the clutch hub 9 and then to the driven shaft 4. The clutch spring 11 is connected to the pressure plate 12
The clutch disk 8 and the clutch plate 10 are kept in frictional engagement by springing in the axial direction.

The pressure plate 12 has a release rack 1.
3 are integrally fixed in the axial direction via a thrust bearing 14. Also, release rack 1
The rack part 13a provided at the release shaft 15 is engaged with the pinion part 16 of the release shaft 15, and is moved in the axial direction by the rotation of the release lever 17 fixed to the upper part of the release shaft 15, thereby moving the pressure plate 12. The multi-disc friction clutch device 2 is connected and disconnected by moving the multi-disc friction clutch device 2.

The release shaft 15 is provided outside the multi-plate friction clutch device 2 so as to extend radially outward, and is pivotally fixed to the clutch cover 18 by bearings 15a and 15b. Release shaft 1
5 is provided with a cutout recess 15c at a location facing the multi-disc friction clutch device 2 to prevent contact with the multi-disc friction clutch device 2. The notch recess 15c of the release shaft 15 is continuously provided from directly above the pinion portion 16 to the area facing the pressure plate 12, thereby extending the distance between the end face of the pressure plate 12 and the outer end of the release shaft 15. The dimension l of can be reduced. Accordingly, the amount of protrusion of the release shaft cover portion 18a of the clutch cover 18 that accommodates the release shaft 15 can be reduced.

Further, the center portion of the pressure plate 12 is recessed inward in the axial direction from its outer end portion to avoid interference with the pinion portion 16 of the release shaft 15.

Furthermore, the pressure plate 12 provided on the release shaft 15 side moves in the axial direction as the multi-plate friction clutch device 2 is engaged and disconnected, and the release shaft 15 changes from the state shown in FIG. 3 to the state shown in FIG.
If the release shaft 15 is arranged so that the cutout recesses 15c face each other when the release shaft 15 is advanced by L to the side, the dimension l from the reference position of the pressure plate 12 to the outer end of the release shaft 15 will be further reduced.

[Effect of idea]

This invention has the above configuration, so that
Since the amount of protrusion of the release shaft cover part of the clutch cover can be reduced, the engine width can be reduced.Furthermore, in motorcycles, a footrest is provided at the rear of the multi-disc friction clutch device, so the release shaft cover part can be made smaller. Reducing the amount of axial protrusion can increase the freedom of movement of the driver's feet.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of a clutch release device for a motorcycle, in which a longitudinal sectional view of a multi-plate friction clutch device, Fig. 2 a perspective view of a release shaft used in the clutch release device, Figs. FIG. 4 is a diagram illustrating the operation of the release shaft, and FIG. 5 is a side view of a motorcycle to which the present invention is applied. DESCRIPTION OF SYMBOLS 1... Engine, 2... Multi-plate friction clutch device, 4... Driven shaft, 12... Pressure disk, 13... Release rack, 15... Release shaft, 15a... Notch recess, 18... clutch cover.

Claims (1)

[Scope of utility model registration request] A pressure plate that connects and disconnects the frictional engagement of a multi-plate friction clutch by moving axially on a driven shaft, a release mechanism that moves this pressure plate in the axial direction, and a release that operates the release mechanism. In the clutch release device for a motorcycle, the release shaft is arranged substantially parallel to the radial direction of the multi-disc friction clutch, and a cutout recess is provided at a portion of the release shaft that faces the multi-disc friction clutch. A clutch release device for a motorcycle characterized by the following.