JPS6344584Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a clutch control device for a vehicle.

[Conventional technology]

In a vehicle's manual gear transmission, the clutch is engaged by gently releasing the clutch pedal after selecting the engagement of the gears, but if the driver accidentally releases the clutch pedal, the clutch may suddenly engage. , excessive impact torque may act on the drive system, potentially damaging the transmission gear.

In the technique disclosed in Japanese Patent Application Laid-Open No. 52-75731 that addresses the above-mentioned problem, a bellows is installed between the end of the inner cable that is locked to the clutch lever and the end of the outer tube through which the inner cable is inserted. is connected, and an electromagnetic throttle valve provided in the middle of the passage that releases the inside of the bellows to the atmosphere operates when the clutch is connected, suppressing sudden movement of the clutch lever. This results in a considerable increase in cost due to the provision of a new electromagnetic throttle valve.

[Problems to be Solved by the Invention] An object of the present invention is to provide a clutch control device that is simple in construction and prevents sudden clutch engagement.

[Means for solving problems]

In order to achieve the above object, the present invention has a structure in which the end of a rubber boot is connected to the end of an inner cable connecting the clutch lever and clutch pedal, and the end of the rubber boot is connected to the end of an outer tube through which the inner cable is inserted. The other end is connected, and a lip-shaped check valve is provided integrally with the other end in contact with the inner cable to allow air to flow into the boot, and an orifice is provided in the boot wall.

[Effect]

When the clutch is closed, the lip-shaped check valve 18 is pushed open by outside air as the volume of the boot 14 expands, so the outside air is sucked into the boot 14 without resistance and does not exert any resistance on the clutch operation. When the clutch is connected, the internal pressure causes the lip-shaped check valve 18 to close as the volume of the boot 14 contracts.
is closed, and the air inside the boot 14 is gradually exhausted to the outside through the orifice 13. This damper action prevents sudden engagement of the clutch.

[Example of idea]

As shown in FIG. 1, the clutch operating mechanism includes a clutch lever 3 of a clutch mechanism 2 disposed between an engine E and a gear transmission M, and a support shaft 7 located in the driver's cab.
A clutch pedal 8 supported by the clutch pedal 8 is connected to the clutch pedal 8 by a remote control cable. As is well known, the remote control cable consists of an outer tube 5 and an inner cable 15 (FIG. 2) inserted through the outer tube 5.
One end of the outer tube 5 is fixed to the housing of the clutch mechanism 2, and the other end is fixed to a portion of the vehicle body 6 adjacent to the driver's cab by a metal fitting 9. One end of the inner cable 15 is connected to the clutch lever 3,
The space between the outer tube 5 and the end thereof is covered with a flexible boot 4 made of rubber or the like. The other end of the inner cable 15 is similarly connected to the clutch pedal 8 by a metal fitting 17 (FIG. 2), and is connected to a metal fitting 9 and a metal fitting 1.
7 is covered by a boot 14.

As shown in FIG. 2, cylindrical thick parts 12 and 16 are integrally formed at both ends of the boot 14, and a lip-shaped check valve 18 is formed adjacent to the thick part 12. An orifice 13 is provided in the lip of the check valve 18. The thick portion 12 is engaged with the annular groove of the metal fitting 9, and the thick portion 16 is engaged with the annular groove of the metal fitting 17. Inner cable 15 pulled out from metal fitting 9
passes through the lip of the check valve 18 and is connected to the metal fitting 17. The peripheral surface of the inner cable 15 is coated with resin or the like to be smooth and have low friction. If the surrounding area is not dusty, orifice 13
Instead of providing the lip of the check valve 18, the boot 1
It may be provided on the wall of 4.

With the above-described configuration, the present invention normally has a check valve 18.
The lip of the outer tube 5 is in close contact with the circumferential surface of the inner cable 15, but when the inner cable 15 is pulled to the right by depressing the clutch pedal 8, the air inside the outer tube 5 is released as the volume of the boot 14 expands. It reaches the check valve 18 through the hole in the metal fitting 9, expands the lip, and is sucked into the boot 14. If the lip of the check valve 18 is soft, it will hardly affect the operating resistance of the clutch pedal 8.

When the clutch pedal 8 is released, the inner cable 15 is moved to the left (second
As the boot 14 contracts in volume, the lip of the check valve 18 is brought into close contact with the inner cable 15 by the internal pressure of the boot 14. boots 14
The air inside is discharged into the outer tube 5 through the orifice 13 and the through hole of the metal fitting 9. Due to the fluid resistance of the orifice 13, the inner cable 15
The return speed of the clutch is suppressed and the clutch is connected slowly.

Since the air inside the boot 14 escapes to the inside of the boot 4 of the clutch mechanism 2 through the orifice 13, the through hole of the metal fitting 9, and the inside of the outer tube 5, the inside of the boot 14 is blocked from the outside, and dust cannot enter from the outside. There is no fear.

[Effect of idea]

As mentioned above, the present invention combines the end of a rubber boot with the end of the inner cable that connects the clutch lever and clutch pedal, and the other end of the boot with the end of the outer tube through which the inner cable is inserted. However, a lip-shaped check valve is provided integrally with the other end of the inner cable to allow air to flow into the boot, and an orifice is provided in the boot wall, so that the check valve can be used to shut off the clutch. It opens without exerting any fluid resistance, and when the clutch is engaged, the volume expansion action of the boot and the fluid resistance of the orifice prevent abrupt engagement of the clutch and protect the drive system from shock loads.

In addition, since the lip-shaped check valve is integrally formed on the wall of the boot, it has an extremely simple configuration and does not require a power source, which is advantageous in terms of cost compared to conventional electromagnetic throttle valves. be.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a clutch operating mechanism equipped with a clutch control device according to the present invention, and FIG. 2 is a side sectional view of the clutch control device according to the present invention. 2: Clutch, 3: Clutch lever, 5: Outer tube, 8: Clutch pedal, 9: Metal fittings, 1
0: Clutch control device, 13: Orifice, 1
4: Boots, 15: Inner cable, 17: Metal fittings, 18: Check valve.

Claims (1)

[Scope of utility model registration request] Connect the end of the rubber boot to the end of the inner cable that connects the clutch lever and clutch pedal, connect the other end of the boot to the end of the outer tube through which the inner cable is inserted, and integrate it with the other end. A clutch control device that includes a lip-shaped check valve that contacts the inner cable and allows air to flow into the boot, and an orifice in the boot wall.