JPS6242179Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a clutch device that reduces the load when the clutch lever is gripped.

In a motorcycle clutch device, as shown in FIG. 1, normally, during driving, clutch plates 3 are pressed against each other by a spring 1 via an operating plate 2, and power is transmitted from a gear 4 to a shaft 5 by friction. By pulling the clutch lever 6 toward you during gear shifting, the cam 8 rotates via the clutch cable 7, the push rod 9 moves to the right in the figure, and the operating plate 2 engages the spring 1. The clutch plate 3 is pushed to the right against the resistance, the friction of the clutch plate 3 is released, and the transmission of power from the gear 4 to the shaft 5 is released.

Incidentally, as motorcycles become larger vehicles, the power to be transmitted increases, but this is constrained by the layout of other equipment, so it is not possible to use an excessively large clutch device. For this reason, the load on the spring 1 is increased to increase the frictional force on the clutch plate 3 to increase the power transmission force from the gear 4 to the shaft 5, but the load on the clutch lever 6 increases and the operation becomes difficult. This places a heavy burden on people. Furthermore, if the stroke of the operating plate is reduced in order to reduce the load on the clutch lever, the clutch may not disengage even if the clutch lever 6 is pulled completely toward you during gear shifting.

The present invention has been developed in view of the above circumstances, and at the same time the clutch is disconnected by gripping the clutch lever, the valve is opened to apply pressure to a moving body integrated with the operating plate, thereby removing the operating plate. It is an object of the present invention to provide a clutch device in which the load on a clutch lever is reduced by moving the clutch lever against a spring.

An embodiment of the clutch lever load reduction device according to the present invention will be explained below with reference to FIG.
Since the same reference numerals as those in the drawings indicate the same members, detailed explanation thereof will be omitted. A holder 10 is attached to the center of the operating plate 2 via a bearing 11. One end of the holder is in contact with the tip of the push rod 9, and a diaphragm plate 12 and a collar 13 are attached to the other end to hold the nut. 14
It is tightened and fixed. There is an O-ring 1 between the diaphragm plate 12 and the push rod 10.
5 to make it airtight. A negative pressure chamber 18 is formed between the diaphragm plate 12 and the clutch cover 16 by a diaphragm 17. The collar 13 has an oval shape as shown in FIG.
A cap 20 is fitted and fixed on the outer peripheral side of the opening of the cap 9, and the through hole 19 is hermetically sealed. Therefore, the diaphragm plate 12 is prevented from rotating by the collar 13, and the diaphragm 17 is protected.
The negative pressure chamber 18 is provided with a gas inlet/outlet 21,
A pipe 22 is attached to this and connected to a three-way solenoid valve 23, and the other two sides of the solenoid valve 23 are connected to the atmosphere through pipes 22' and 22'', and branches that distribute air-fuel mixture from the carburetor to each cylinder. Pipe, so-called intake manifold (not shown)
is connected to. Further, the clutch lever 6 is provided with a switch 24 for sensing its operation and opening and closing the solenoid valve 23.

In the clutch device constructed as described above, when the clutch is connected as shown in FIG. 2, the clutch lever 6 is grasped to disconnect it.
When pulled toward you, switch 24 turns on, solenoid valve 23 turns on, and pipes 22 and 2
2'' is in communication with the diaphragm plate 12, and the intake pressure of the intake manifold (not shown) acts on the negative pressure chamber 18 through the solenoid valve 23, and the air in the negative pressure chamber 18 is sucked and becomes negative pressure. A force is generated to move the operating plate 2 to the right.Since this diaphragm plate 12 is integrated with the operating plate 2 via the holder 10, the force ultimately moves the operating plate 2 to the right. When the clutch lever 6 is squeezed, the cam 8 rotates via the clutch cable 7, the push rod 9 moves to the right, the operating plate 2 is pushed to the right against the spring 1, and the clutch is disengaged. However, the force required to move the operating plate 2 to the right at this time, that is, the load applied when pulling the clutch lever 6 toward you, is the force required to move the operating plate 2 to the right due to the intake pressure of the intake manifold described above. By moving to , the force for pulling the clutch lever 6 is reduced accordingly.

When the clutch lever 6 is released to connect the clutch, the switch 24 is turned OFF, the solenoid valve 23 is turned OFF, the intake manifold and the negative pressure chamber 18 are cut off, and the negative pressure chamber 18 is connected to the atmosphere via the solenoid valve 23. The atmosphere is sucked into the negative pressure chamber 18, and as a result, the force that moves the operating plate 2 to the right is eliminated. Therefore, the operating plate 2 is pushed to the left by the spring 1, and the clutch is connected.

Next, another embodiment of the clutch device according to the invention will be described with reference to FIG. 4. Since the same reference numerals as those in FIG. 2 denote the same members, detailed description thereof will be omitted.
The reference numeral 25 denotes a cylindrical portion 26 formed on the outer surface of the clutch cover 16, and a cap 27 is attached to the opening edge of the cylindrical portion 26.
A holder 10 attached to the center of the operating plate 2 via a bearing 11 is inserted into the cylinder chamber 25 so as to be able to slide airtightly. A piston plate 2 which slides airtightly within the cylinder chamber 25 is inserted into the tip of the holder 10.
The piston plate 28 is fitted with a collar 13 and fastened with a nut 14. The collar 13 is oval in shape and slidably fitted into an oval recess 29 formed in the center of the inner surface of the cap 27. Thus, the piston plate 28 is prevented from rotating by the collar 13.
A pressure oil supply/discharge port 30 is provided on the
1 is attached to the three-way isolator valve 23
The other two ends of the solenoid valve 23 are connected to a hydraulic source (not shown) through pipes 31' and 31''.
The right chamber 25b of the cylinder chamber 25 and the clutch chamber 32 are connected to a pressure oil return port 33 provided in the clutch cover 16 so as to communicate with the clutch chamber 32. The right chamber 25b of the cylinder chamber 25 and the clutch chamber 32 are connected to a passage 34 provided in the clutch cover 16.

In the clutch device constructed as described above, when the clutch is connected as shown in FIG. 4, the clutch lever 6 is grasped to disconnect it.
When you pull it toward you, switch 24 turns on, solenoid valve 23 turns on, and pipes 31 and 3
1', and pressure oil is supplied from a hydraulic source (not shown) through the solenoid valve 23 to the left chamber 25a of the cylinder chamber 25, thereby generating a force that moves the piston plate 28 to the right. At this time, the pressure oil in the right chamber 25b of the cylinder chamber 25 flows through the passage 3.
4 into the clutch chamber 32. The piston plate 28 that has moved to the right is the holder 1
Since it is integrated with the operating plate 2 via the 0, the force ultimately moves the operating plate 2 to the right. On the other hand, when the clutch lever 6 is gripped, the cam 8 is rotated via the clutch cable 7, the push rod 9 is moved to the right, the operating plate 2 is pushed to the right against the spring 1, and the clutch is engaged. However, the force required to move the operating plate 2 to the right at this time, that is, the load applied when pulling the clutch lever 6 toward you, is due to the force applied to the rightward movement of the piston plate 28 by the pressure oil described above. The movement reduces this amount, and therefore the pulling force on the clutch lever 6 is significantly reduced.

When the clutch lever 6 is released to connect the clutch, the switch 24 is turned OFF, the solenoid valve 23 is turned OFF, the pipes 31 and 31' are cut off, the pipes 31 and 31'' are communicated with each other, and the cylinder chamber 25 is opened. Pressure oil in the left ventricle 25a is transferred to pipe 3.
1, returned to the clutch chamber 32 through the solenoid valve 23 and the pipe 31'', and is returned to the cylinder chamber 25.
The pressure oil in the clutch chamber 32 is sucked into the right chamber 25b, and as a result, the force that moves the operating plate 2 to the right is eliminated. Therefore, the operating plate 2 is pushed to the left by the spring 1, and the clutch is connected.

Although the embodiment shown in FIG. 4 uses hydraulic pressure, air pressure or other gas pressure may be used instead of hydraulic pressure. In that case, the hydraulic power source connected to the solenoid valve 23 via the pipe 31' is
It can be used as is by simply replacing it with a compressed air source or other gas pressure source.

Furthermore, in each of the above embodiments, the pressure applied to the operating plate 2 is switched by opening and closing the three-way solenoid valve 23.
The present invention is not limited to this, and it may be performed by opening and closing other mechanical valves.

As detailed above, according to the clutch device according to the present invention, when the clutch is disconnected by gripping the clutch lever, the switch attached to the clutch is simultaneously activated to open the valve.
Since pressure is applied to the operating plate and the operating plate moves against the spring, the load applied when pulling the clutch lever toward you is reduced by that amount, and therefore the force to pull the clutch lever is significantly reduced. This has the excellent effect of allowing the clutch to be disengaged smoothly and reliably.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view showing a conventional clutch device for a motorcycle, Fig. 2 is a longitudinal sectional view showing a clutch device according to the present invention, Fig. 3 is a view taken along the line A-A in Fig. 2, and Fig. 4 FIG. 3 is a longitudinal sectional view showing another clutch device according to the present invention. 1... Spring, 2... Operating plate, 3... Clutch plate, 4... Gear, 5...
...Shaft, 6...Clutch lever, 7...Clutch cable, 8...Cam, 9...Push rod, 10...Holder, 11...Bearing, 1
2...Diaphragm plate, 13...Color,
14...Nut, 15...O ring, 16...Clutch cover, 17...Diaphragm, 18...
Negative pressure chamber, 19... Through hole, 20... Cap, 21
...Gas inlet/outlet, 22, 22', 22''...Pipe, 23...Solenoid valve, 24...Switch, 25...Cylinder chamber, 25a...Left chamber of cylinder chamber, 25b...Right chamber of cylinder chamber ,2
6... Cylindrical part, 27... Cap, 28... Piston plate, 29... Recess, 30... Pressure oil supply/discharge port, 31, 31', 31''... Pipe, 32... Clutch chamber, 33 ... Pressure oil return port, 34 ... passage.

Claims (1)

[Scope of utility model registration request] A clutch lever, a cam that is rotated via a clutch cable when the clutch lever is gripped, a push rod that is moved forward and backward by the rotation of the cam, and the advancement of the push rod releases friction on the clutch plate against a spring;
In a clutch device consisting of an operating plate that presses clutch plates against each other with a spring when retracting, a moving body is provided on the operating plate, a pressure chamber is provided on one side of the moving body, and a pressure chamber is provided midway into the pressure chamber. A pressure source that applies positive or negative pressure in a direction opposite to the direction of action of the spring is connected to the valve through a pipe provided with a valve, and the valve is electrically or electrically operated by gripping the clutch lever. A clutch device characterized by being mechanically connected to a clutch lever.