JPS624728Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a device for preventing a half-clutch condition in a vehicle clutch.

[Conventional technology]

Some vehicle drivers have a habit of driving with their foot constantly on the clutch pedal. If such an operation is performed, the clutch will be in a half-clutch state, which not only deteriorates the power transmission efficiency but also causes abnormal wear of the clutch facing, which is undesirable.

As disclosed in Utility Model Application No. 52-164650,
Hydraulic dampers for restraining the movement of the clutch pedal are known, but such means cannot restrain the movement of the clutch pedal in response to external forces in the engaged state of the clutch and prevent it from becoming half-clutched.

[Problem that the invention attempts to solve]

In view of these problems, the purpose of the present invention is to provide a half-clutch prevention device that prevents the clutch pedal from stroking unless a predetermined load is applied to the clutch pedal even if the foot is placed on the clutch pedal. It's about doing.

[Means to solve the problem]

In order to achieve the above object, the present invention has a structure in which a sliding guide block is connected to one of the pedal lever of the clutch and a fixed part of the vehicle body, and a rod fitted in the sliding guide block is connected to the other, respectively. A recess is formed in the outer peripheral surface of the rod, and a ball is supported by the sliding guide block, which is biased and engaged by a spring when the clutch is connected.

[Effect]

When the clutch is connected, the rod is prevented from sliding against the block by the restraining member, so the clutch pedal will not operate with an external force equivalent to placing your foot on the clutch pedal, and a half-clutch state will be prevented. As the restraining member, a ball is used which is engaged with a recess in the rod by a spring.

[Example of idea]

To explain the present invention based on examples, first,
As shown in FIG. 1, the clutch operating mechanism includes a pedal lever 3 having a clutch pedal 2 and connected to a rotation shaft 9. This rotating shaft 9 is supported by the vehicle body side, and is connected to the arms 5 and 8, respectively. A return spring 7 is stretched between the arm 8 and the vehicle body side fixing part 6, while the arm 5 is connected to the rotating shaft 9. A rod 14 is connected with a pin 4.

This rod 14 is engaged with a piston of a master cylinder 15 fixedly supported on the vehicle body side, and when pressed, pressurized fluid is sent to the booster 23 through a conduit 16. The booster 23 boosts the hydraulic pressure by negative pressure or air pressure, and is designed to push out the rod 22 and operate the clutch mechanism.

The clutch mechanism is housed inside a clutch housing 18 that is integrally formed on one end side of the transmission 17. A clutch lever 20 that disconnects and connects the clutch mechanism is attached to the clutch housing 18 with a rotation shaft 1.
9, and the aforementioned rod 22 is connected to this end with a pin 21. The configuration described above is similar to a conventional clutch operating mechanism.

The half-clutch prevention device 13 according to the present invention is
As shown in the figure, a hole 36 is provided in a sliding guide block 31, and the rod 12 is slidably guided and supported by this hole 36, and a hole 35 perpendicular to the hole 36 is provided in the block 31, and a spring 33 is accommodated inside the hole 35 to bias a ball 32 into engagement with a recess 34 provided in the rod 12. The recess 31 is configured so that the ball 32 engages with it exactly when the pedal lever 3 is in the return position with the clutch mechanism engaged.

In the above example, the rod 12 is connected to the pedal lever 3 with the pin 10, and the block 31
is supported by a fixed part of the vehicle body with a pin 25, but it is also possible to connect the block 31 to the pedal lever 3 and the rod 12 to the vehicle body side, respectively.

Since the present invention is constructed as described above, the pedal lever 3 will not rotate even if the foot is lightly placed on the clutch pedal 2 when the clutch mechanism is connected. This is because even if the rod 12 is pushed to the right by the pedal lever 3, the ball 32 is strongly engaged with the recess 34 of the rod 12 by the spring 33, so the rotation of the pedal lever 3 is prevented. Ru. In this way, even if the driver puts his foot on the clutch pedal 2, this is prevented by the operation of the clutch mechanism, so that a half-clutch state can be prevented.

In addition, when shutting off the clutch mechanism, if you first depress the clutch pedal 2 strongly, the rod 12
is pushed to the right by a stroke S, ball 3
2 is pushed up against the spring 33. Since the rod 12 moves easily thereafter, the clutch can be smoothly engaged in the same manner as in the conventional clutch operating mechanism. The pedaling force required to obtain such a stroke S is shown by a solid line in FIG. Note that the broken line indicates the characteristics of the conventional clutch operating mechanism.

The connection operation of the clutch mechanism is also the same as that of the conventional one, and when the clutch pedal 2 is finally returned to the state shown in FIG. Hollow 34
to re-engage.

[Effect of idea]

As mentioned above, the present invention replaces the conventional clutch operation mechanism by connecting a sliding guide block and a rod fitted to the block between the pedal lever and the vehicle body, and using a spring supported by the block. Although it has a simple structure in which the ball that is biased by the rod is biased and engaged with the recess of the rod,
This has the excellent effect of preventing a half-clutch state for drivers who have the habit of placing their foot on the clutch pedal, thereby improving power transmission efficiency and preventing wear and tear on the clutch facing. is obtained.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a clutch operating mechanism equipped with a half-clutch prevention device according to the present invention, FIG. 2 is a longitudinal sectional view of the device, and FIG. 3 is a diagram illustrating the operation of the device. 2: Clutch pedal, 3: Pedal lever, 5,
8: Arm, 7: Return spring, 9: Rotating shaft, 12: Rod, 13: Half clutch prevention device, 15: Master cylinder, 18: Clutch housing, 20: Clutch lever, 23: Boosting device, 31: Sliding Motion guide block, 32: ball, 33: spring, 34:
dimple.

Claims (1)

[Scope of utility model registration request] A sliding guide block is connected to one side of the pedal lever of the clutch and a fixed part of the vehicle body, and a rod fitted in the sliding guide block is connected to the other side, a recess is formed in the outer peripheral surface of the rod, and the sliding guide A device for preventing a clutch from becoming half-clutched, characterized in that a ball is supported on a block and is biased and engaged by a spring when the clutch is connected.