JPH0440026Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a clutch operating device for an automobile, and in particular, an air reaction chamber is formed in a clutch master cylinder, and an adjustable air pressure is applied to the clutch master cylinder. This invention relates to a clutch operating device in which the operating force of the clutch is adapted to the driver's preference.

b. Prior Art As shown in FIG. 3, a conventional clutch operating device is a clutch pedal 1 which operates a master cylinder 2, and a hydraulic cylinder 3c of a clutch booster 3 is operated by hydraulic pressure supplied from the master cylinder 2, and a relay valve 3 is connected to the master cylinder 2.
Then, an air power cylinder 3b is operated by air pressure supplied from a compressed air source 4 via the relay valve 3a, and a push rod 5 for operating the clutch is operated by the force generated by the operation of the cylinder 3b and the force generated by the hydraulic cylinder 3c.

For example, if the master cylinder 2 is a push-ton type, when the clutch pedal 1 is depressed, the piston slides against the spring force by the push rod linked to the clutch pedal 1, and first the fluid supply port from the reservoir is opened. Closed with a let valve. Further, as the piston moves, the fluid in the master cylinder 2 is sent to the clutch booster 3 through the hydraulic pressure delivery port, and the hydraulic pressure proportional to the depression force on the clutch pedal is directly transmitted to the device 3.

c. Problems that the invention attempts to solve However, in recent years, automobile drivers have become widespread regardless of age and gender, and the operating force of the clutch, that is, the force of pressing the clutch pedal, remains constant and cannot be changed. The problem for the driver was that the vehicle had poor maneuverability.

On the other hand, there is a clutch operating device which is a clutch booster operated by hydraulic pressure sent out from a master cylinder and which adjusts the setting load of a valve spring of a valve device for converting oil chamber pressure to adjust the opening and closing of the valve device ( For example, Utility Model Application No. 62-73123). This operating device changes and adjusts the starting point of the clutch booster itself and, as a result, changes the depression force on the clutch pedal. However, in order to adapt the clutch pedal depression force to the driver's preference, it is necessary to make adjustments at the clutch booster.
There was a problem in that the force on the clutch pedal could not be easily adjusted from the driver's seat.

This invention was created in view of these problems.
The object is to solve the above-mentioned problems and to provide a clutch operating device that can adjust the clutch operating force of an automobile, that is, the depression force of the clutch pedal, to suit the driver's preference.

d. Means for solving the problem The configuration of the present invention to achieve the above object is as follows: A master cylinder that sends out hydraulic pressure according to the depression force of the clutch pedal, and a hydraulic pressure in the master cylinder that is proportional to the master cylinder. An air cylinder with a liquid-pneumatic conversion unit that converts air pressure into air pressure and uses the air pressure to drive a piston in a reciprocating manner, a push rod that is connected to the piston and operates a clutch lever, and a position that can be adjusted from the driver's seat. an air pressure adjusting means disposed, forming an air reaction chamber within the master cylinder;
The set air pressure adjusted by the air pressure adjustment means is applied here to generate a pressing force, and the master cylinder generates a hydraulic pressure proportional to the difference between the pressing force of the clutch pedal and the pressing force of the reaction force chamber. It is characterized by sending out.

e. Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings.

FIG. 1 is an explanatory diagram showing an embodiment of the clutch operating device of the present invention. In the figure, 10 is a clutch pedal, 11 is a master cylinder, 12 is its cylinder, 13 is a piston, 14 is a hydraulic chamber, 15
16 is an air reaction force chamber, 16 is an air cylinder with a liquid-pneumatic converter, 16a is the liquid-pneumatic converter, 16b is a piston, 16c is a piston return spring, 17 is a push rod, 18 is a clutch lever, and 19 is a manual air It is a pressure reducing valve.

The piston 13 of the master cylinder 11 is pushed by the pedal force operated from the clutch pedal 10 and the adjusted air pressure supplied from the air pressure reducing valve 19 through the air tank 21 and pipes 25a and 25b in the air reaction force chamber 15. I'm under pressure. The hydraulic pressure generated in the hydraulic chamber 14 is communicated from the hydraulic pressure outlet 14a through the pipe line 26 to the hydraulic pressure port 16d of the air cylinder 16 with the liquid-pneumatic pressure converter.

The hydraulic pressure communicated with the hydraulic pressure port 16d of the air cylinder 16 is transmitted to the hydraulic pressure converter 1 in the cylinder 16.
At 6a, the pressure is converted into compressed air pressure proportional to the hydraulic pressure. This converted compressed air pressure and the return spring 16c
Accordingly, the piston 16b in the air cylinder 16
is moved forward or backward, and a clutch lever 18 is operated via a push rod 17 connected thereto to disengage or engage the clutch. Note that compressed air is supplied to the compressed air port 16e of the air cylinder 16 from the air tank 23 via the relay air tank 22 and pipes 27a and 27b.

The manual air pressure reducing valve 19 includes an air tank 2.
Pipe line 25 between 3 and the pressure gauge located near the driver's seat
Compressed air is supplied from an air tank 23 branching off from c. Further, compressed air is supplied to the air tank 23 as a compressed air source by an air compressor 24 driven by an engine (not shown) or the like.

Here, the master cylinder 11 will be explained in more detail.

This master cylinder 11 is connected to the clutch pedal 1
The structure is such that a hydraulic pressure is delivered that is proportional to the difference between the pedal effort from 0 and the pressing force due to the set air pressure adjusted by an air pressure reducing valve 19 disposed near the driver's seat.

FIG. 2 is a sectional view of the master cylinder 11 of this embodiment. In the figure, the piston 13 is slidably disposed within the cylinder 12, and the right half of the cylinder 12 has a cylinder enlarged portion 12a, and the right half of the piston 13 has a piston enlarged portion 13a. A push rod 10a interlocked with the clutch pedal 10 is engaged with the right end of the piston 13. A return spring 14b is disposed in the hydraulic pressure chamber 14 in contact with the left end surface of the piston 13, and in order to fill the hydraulic pressure chamber 14 with liquid such as oil, a return spring 14b is provided from the reservoir 14c through the liquid supply port 14d. It is constantly supplied with fluid. An air reaction chamber 15 is formed on the left side of the piston enlarged portion 13a, and air pressure adjusted appropriately from the pressure reducing valve 19 is supplied to the pipe line 25a and the communication port 15.
It is added via a. Note that 12b is a stopper for the piston 13 disposed near the end of the cylinder enlarged portion 12a.

The illustrated state is a state in which there is no operation from the clutch pedal 10, and the piston 13 is moved by the return spring 1.
The stopper 12b at the right end of the cylinder 12 is pressed by the urging force of the cylinder 4b and the air pressure applied to the air reaction force chamber 15.

In this state, when the clutch pedal 10 is depressed, the piston 13 resists the biasing force of the return spring 14b due to the difference between the depression force from the clutch pedal 10 via the push rod 10a and the pressing force due to the air pressure in the reaction force chamber 15. to move to the left in the diagram. Therefore, a hydraulic pressure proportional to this force difference is generated within the hydraulic pressure chamber 14. Note that at the same time as the piston 13 begins to move, the liquid supply port 14d of the reservoir 14c is closed. This hydraulic pressure is communicated from the hydraulic pressure outlet 14a to the hydraulic pressure port 16d of the air cylinder 16 via a pipe line 26.

When the clutch pedal 10 is released, the piston 1
3 moves to the right in the figure, returning to the state where the clutch pedal is not operated as shown in FIG.

As described above, in order to adapt the pressing force of the clutch pedal 10 to the driver's preference and physical strength, the master cylinder 11 applies a pressing force by air pressure appropriately adjusted by the manual pressure reducing valve 19 in the direction opposite to the direction of the pedal pressing force. Since the output characteristics are added, the output characteristics can be made variable.
Furthermore, since there are cases where the driver does not change at all times, the air pressure reducing valve 19 may be of a stepwise switching type.

Note that the technology of the present invention is not limited to the technology in the above-mentioned embodiments, and may be implemented by means of other modes that perform the same function. Changes and additions are possible.

f Effects of the invention As is clear from the above explanation, according to the clutch operating device of the present invention, the air pressure adjusting means is disposed within a range that can be adjusted from the driver's seat, and the air pressure is delivered from the master cylinder operated by the clutch pedal. Since the hydraulic pressure applied to the clutch pedal is proportional to the difference between the pressing force on the clutch pedal and the pressing force on the reaction force chamber due to the adjusted air pressure from the air pressure adjusting means, the operating force of the clutch, that is, the pressing force on the clutch pedal is It can be adapted to the individual's preferences and physical strength.

Therefore, for the driver, the feeling of clutch operation and the maneuverability of the vehicle can be improved.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing one embodiment of the clutch operating device of the present invention, FIG. 2 is a sectional view of a master cylinder, and FIG. 3 is a system diagram of a conventional clutch operating device. 10... Clutch pedal, 11... Master cylinder, 13... Piston, 14... Hydraulic pressure chamber, 14
a...Hydraulic pressure outlet, 14b...Return spring, 15...
...Pneumatic pressure chamber, 16...Air cylinder with liquid-pneumatic converter, 16a...Liquid-pneumatic converter, 16a...Piston, 17...Push rod, 18...Clutch lever, 19...Air pressure reducing valve, 20 ...Pressure gauge.

Claims (1)

[Claims for Utility Model Registration] A master cylinder that sends out hydraulic pressure according to the pressing force of the clutch pedal, and the hydraulic pressure from the master cylinder is converted into air pressure proportional to this, and the piston is reciprocated by the air pressure. A reaction force chamber is formed in the master cylinder, and a reaction force chamber is formed in the master cylinder, and a reaction force chamber is formed in the master cylinder, and a reaction force chamber is formed in the master cylinder, and a reaction force chamber is formed in the master cylinder. A clutch characterized in that the adjusted air pressure is applied to generate a pressing force, and the master cylinder delivers a hydraulic pressure proportional to the difference between the pressing force of the clutch pedal and the pressing force of the reaction force chamber. Operating device.