JPS61197826A - Friction clutch device - Google Patents

Abstract

PURPOSE:To perform movement of pressing plate efficiently in connecting operation by providing a connection control means which can a predetermined give/ fluid resisting force against spring force pressing a pressing plate of a friction clutch to a clutch plate. CONSTITUTION:A spring 23 is interposed between a pressing plate 22 of a friction clutch and a follower body 20 to enable integral rotation of a prime mover 18 and the follower 20. An intermediate rod 29 is pressed by a cylinder 24 and a piston 28 as operating means to move the pressing plate 22 to a non contact position with a clutch plate 19 or to form connecting condition. Then, a predetermined fluid resisting force can be applied to spring force and moving speed condition of the pressing plate can be kept always at a proper speed.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a friction clutch device.

[Prior Art] The relationship between the movement stroke S of the pressing plate by the operating means of a conventional friction clutch device and the elapsed time T is shown in FIG. 2. In Fig. 2, A shows the process of connecting the pressing plate, B shows the process of connecting the pressing plate and the clutch plate, and C shows the process of connecting the pressing plate and the clutch plate in continuous sliding contact, that is, in a half-clutch state. .

[Problems to be Solved by the Invention] By the way, when the operation means of the friction clutch device connects the pressing plate and the clutch plate, the moving operation of the pressing plate is suddenly completed as shown by D in FIG. You may try to do so. In this case, the rotation of the driven side increases excessively, or the load on the driven side acts impulsively on the driving side, causing irregular operation of the driving side motor, such as engine stop. Therefore, in order to smoothly transmit the output of the driving side to the driven side, the operation of moving the press plate by connecting the operating means should be performed at an operation speed below the critical operation speed as shown by E in FIG. 2, for example. There is a need.

However, in actual manual friction clutch operation,
The moving operation of the pressing plate by the operating means is performed stably at an operating speed below the critical operating speed, and the present invention allows the moving operation of the pressing plate when the operating means is connected to be easily, stably and efficiently performed. The purpose is to

[Means for Solving the Problems] The present invention allows the pressing plate to be pressed against the clutch plate under the action of the spring force of the elastic body by the connecting operation of the operating means, and the spring force of the elastic body is pressed by the disconnecting operation of the operating means. A friction clutch device that separates a pressing plate from a clutch plate against a force is provided with a connection control means that can apply a predetermined fluid resistance force to a spring force that presses the pressing plate against the clutch plate. It is something.

[Function J] According to the present invention, a predetermined fluid resistance force acts on the pressing plate during the connection operation by the operating means, and the moving speed state of the pressing plate is always regulated to an appropriate operating speed below the critical operating speed. becomes possible. That is, even if the manual operation applied to the operating means is sudden, the moving speed of the pressing plate remains appropriate, and the driven side and the driving side can be gradually and smoothly connected.

[Embodiment] FIG. 1 is a control system diagram showing a first embodiment in which the present invention is applied to a clutch device for a motorcycle.

In FIG. 1, 11 is a driving shaft such as a crankshaft between the internal combustion engine 411 of a two-wheeled motor vehicle, 12 is a driven shaft such as an input shaft in a transmission, 13.14 is a gear, 15.16 is a bearing,
17 is an intermediate gear.

The intermediate gear I7 meshes with the gear 13 of the driving shaft 11, and is provided with a driving body 18 on its side surface. The driving body 18 holds a plurality of clutch plates 19 on its inner periphery so as to be integrally rotatable.

On the other hand, the driven shaft 1 protrudes from the center inside the X moving body 18.
A driven body 20 is fixed to the end of 2. Driven body 20
holds a plurality of clutch plates 21 on its outer periphery so as to be integrally rotatable. Each clutch plate 21 is disposed at a position where it is sandwiched between the respective clutch plates 19.

A pressing plate 22 is coupled to the outer end of the driven body 20 so as to be rotatable therewith. A spring 23 as a resilient body is interposed between the driven body 20 and the pressing plate 22. The spring 23 is
By pressing the pressing plate 22 in the direction of contact with the clutch plate 19 and holding the clutch plate 19.21 in a pinched state between the driven body 20 and the pressing plate 22, the driving body 18 and the driven body 2 are
0 so that they can rotate together.

24 is a cylinder as an operating means, and 25 is a mask cylinder. In other words, manual clutch lever 2
By the disconnection operation in step 6, the mask cylinder 25 is contracted, and the hydraulic oil in the mask cylinder 25 reaches the cylinder 24 via the pipe 27. As a result, the cylinder 24
The piston 28 pushes the intermediate rod 29 inserted through the axial center of the driven shaft 12, and moves the pressing plate 22 to a non-contact position with the cracker 2,000 plate 19 against the spring force of the spring 23. move it. Thereby, the connection state between the driving body 18 and the driven body 20 can be released. On the other hand, when the clutch lever 26 is connected, the pressing plate 22 can be connected to the clutch plate body 20 under the action of the spring force of the spring 23.

Therefore, in this embodiment, the throttle valve 31, the check valve 32, and the throttle valve 33 are arranged in parallel in the oil supply path connecting the cylinder 24 and the mask cylinder 25. The throttle valve 31 is always open, and the check valve 32 is closed to the mask cylinder 2.
5 side to the cylinder 24 side, and the throttle valve 33
can be opened by a solenoid valve 35 that opens when the coil 34 is energized. The solenoid valve 35 is opened when the shift state of the transmission to which the driven shaft 12 is connected is set to the high speed side.

Next, the operation of the first embodiment will be explained.

When the clutch lever 26 is operated to release the connection.

The hydraulic oil pressure-fed by the mask cylinder 25 passes through the check valve 32 and reaches the cylinder 24 . As a result, the pressing plate 22 is moved to a non-contact position with the clutch plate 19,
The connection between the driving body 18 and the driven body 20 can be disconnected.

hk-bntK1F meeting "InkIte1s--vl, 44
tlPAt/IG'*7ml"If15) - When the clutch lever 26 is operated to connect under the condition of tlPAt/IG'*7ml"If15), the hydraulic oil in the cylinder 24 reaches the mask cylinder 25 side via the throttle valve 31. , a large fluid resistance force is applied to the pressing plate 22. As a result, the moving speed of the pressing plate 22 toward the clutch plate 19 can be regulated to a very gentle and appropriate operating speed. Even if the operation is rapid, the moving speed of the press plate 22 is maintained at an appropriate speed state, and the driving body 18 and the driven body 20 can be gradually and smoothly connected.

Further, when the clutch lever 26 is connected while the gear shift state is on the high speed side, the throttle valve 33 is opened by the solenoid valve 35, and therefore the hydraulic oil in the cylinder 24 is It reaches the mask cylinder 25 side via both the throttle valves 31 and 33, and applies a moderate fluid resistance force to the press plate 22. Thereby, the moving speed of the press plate 22 toward the clutch plate 19 can be regulated to a moderately slow and appropriate operating speed.

That is, according to the switching setting of the moving speed state of the pressing plate 22, the shift state of the transmission is on the low speed side and the driving body 1
When the rotational speed difference of the driven body 20 with respect to 8 is large,
By making the moving speed of the press plate 22 very slow, it becomes possible to smoothly eliminate the above-mentioned large rotational speed difference.

On the other hand, when the shift state of the transmission is on the high speed side, the driving body 18
When the difference in rotational speed of the driven body 20 with respect to the rotational speed of the driven body 20 is relatively small, the rotational speed difference can be smoothly and efficiently eliminated under a condition in which the moving speed of the pressing plate 22 is relatively slow.

In the above embodiment, when the clutch lever 26 is returned very slowly, the throttle valves 31 and 33 do not restrict the above operation, and the movement between the driving body 18 and the driven body 20 occurs very slowly. During connection time, it is possible to obtain a half-clutch condition. Furthermore, according to the above embodiment, the manual operating force required for returning the clutch lever 26 is reduced by the throttle valve 31, 33, thereby reducing the burden on the muscular strength required for the returning operation and making the clutch operation easier. It also makes you feel something.

FIG. 3 is a schematic diagram showing a second embodiment of the present invention. This second embodiment differs from the first embodiment in that the cylinder 2
4 and the mask cylinder 25, a solenoid valve 36 is further arranged in parallel. According to this I82 embodiment, the solenoid valve 3
By appropriately setting 5.36 on, the cylinder 24
It is possible to diversify the path of the hydraulic fluid from the mask cylinder 25 to the mask cylinder 25. Thereby, the fluid resistance force applied to the press plate 22 can be multi-staged, and the moving speed of the press plate 22 can be adjusted more precisely.

Note that the multi-stage adjustment of the moving speed of the pressing plate 22 can be achieved by adjusting the ratio of the opening time and closing time of the solenoid valve 35 in FIG. The fourth
rl! L of J has a small open time ratio of the solenoid valve 35 and is suitable for a low speed shift state, and F has a large open time ratio of the solenoid valve 35 and is suitable for a high speed shift state.

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In addition to controlling according to the shift status of the transmission,
Depending on the rotational speed of the internal combustion engine, for example, it may be set more slowly for low rotational speeds. It may be set more slowly for low travel speeds.

FIG. 5 is a schematic diagram showing a third embodiment of the present invention. In this third embodiment, the fork portion 42 is rotated around the support shaft 43 by pulling the wire 41 as the operation means.
The intermediate rod 44 is pushed and the pressing plate 45 is moved to the clutch plate 4.
It is possible to move to a non-contact position with 6. 47 is a driving body, 48 is a driven body, and 49 is a spring as a spring body.

However, in this third embodiment, the fork portion 4
A piston rod 51 of a damper cylinder 50 is connected to the piston 52, and an oil passage 53 is provided in the piston 52, and the opening degree of this oil passage 53 can be adjusted by a control valve 54. Therefore, when the press plate 45 is moved to a non-contact position with the clutch and plate 46 by pulling the wire 41, the control valve 54 smoothly moves the press plate 45 without being involved in the fully open state of the oil feed path 53. It is possible to move to On the other hand, when the pressing plate 45 is moved to the contact position with the clutch plate 46 by the return operation of the wire 41, the control valve 54
3 is partially or intermittently closed, and the press plate 4 is closed.
A predetermined fluid resistance force is applied to 5. Thereby, the moving speed of the press plate 45 can be set to a relatively smooth and predetermined appropriate operating speed state.

[Effects of the Invention] As described above, the friction clutch device according to the present invention is provided with a connection control means that can apply a predetermined fluid resistance force to the spring force that presses the pressure plate against the clutch plate. This is what I did. Therefore, when the operating means performs the connection operation, a predetermined fluid resistance force acts on the press plate, making it possible to always regulate the moving speed of the press plate to an appropriate operating speed.

[Brief explanation of drawings]

Fig. 1 is a control system diagram showing the first embodiment of the present invention, Fig. 2 is a diagram showing the clutch operation speed state, Fig. 3 is a schematic diagram showing the third embodiment of the invention, and Fig. 4 is a diagram showing the clutch operation speed state. A diagram showing the opening/closing control state of the electromagnetic valve, and FIG. 5 is a schematic diagram showing a third embodiment of the present invention. 19...Clutch plate, 21...Clutch plate, 22.
...Press plate, 23...Spring, 24...Cylinder, 3
1.33... Throttle valve, 41... Wire, 45...
Pressing plate, 46...Clutch plate, 49...Spring, 50
...damper cylinder. Agent Patent Attorney Osamu Shiokawa 2 EnS Figure 3 Figure 4 t ('' Figure 5

Claims (1)

[Claims] (1) By the connecting operation of the operating means, the pressing plate is pressed against the clutch plate under the action of the spring force of the elastic body, and by the disconnecting operation of the operating means, the pressing plate is pushed away from the clutch plate against the spring force of the elastic body. What is claimed is: 1. A friction clutch device that separates a friction clutch device, characterized in that it is provided with connection control means that can apply a predetermined fluid resistance force to a spring force that presses a pressure plate against a clutch plate.