JPH0738740Y2 - Hydraulic clutch operation mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a hydraulic clutch operating mechanism, and more particularly to a piping structure in the mechanism.

(Prior Art) As is well known, as a mechanism for swinging a release fork in an automobile clutch, a clutch pedal and a master cylinder, that is, a so-called clutch booster are connected by hydraulic piping and the clutch pedal is depressed. There is a hydraulic clutch operating mechanism in which a clutch booster acts by hydraulic pressure from the master cylinder to operate a release fork.

(Problems to be Solved by the Invention) The hydraulic clutch operation mechanism described above is also applied to large vehicles such as buses and trucks. There was a problem.

That is, in the above-mentioned large-sized vehicle, the length of the pipeline from the clutch pedal and the master cylinder to the clutch booster becomes considerably long, and a curved path must be formed in the pipeline due to the layout of the pipeline. As a result, an air pocket may be generated in the curved path.

Therefore, when performing air bleeding work in order to remove such air, the clutch pedal is depressed to increase the fluid pressure in the pipe line and push it out from the air bleeding plug. Since the amount of liquid to be pushed out and the amount of liquid to be pushed out also increase, the amount of replenishing liquid also increases and work efficiency deteriorates.
In addition, if the pipeline is long, when the clutch pedal is operated quickly (double clutch) during operation, it takes time for the liquid in the pipeline to return to the original state even if the clutch pedal is released. New liquid may be replenished from the reservoir tank connected to the inside of the pipeline before the liquid is completely returned.This causes the actual clutch connection / disconnection state, so-called, even when the clutch pedal is depressed again. The operation amount of the release fork changes.

Therefore, it is necessary to perform the above-mentioned air bleeding in a short time and to prevent replenishment of new liquid or the like until the liquid is restored.

Therefore, in view of the above-mentioned problems in the conventional hydraulic clutch operating mechanism, an object of the present invention is to provide a hydraulic clutch operating mechanism that does not change the operation of the clutch and can perform air bleeding work in a short time. To get.

(Means for Solving the Problem) In order to achieve this object, the present invention is a structure of a hydraulic pipe line from a clutch pedal in a hydraulic clutch operating mechanism to a clutch booster that swings a release fork in a clutch housing. Then, the middle of the hydraulic pipe line is divided, and the divided position is connected to the first oil storage chamber connected to the pipe line located on the clutch pedal side and the pipe line located on the clutch booster side. And a second oil storage chamber that connects the oil storage chambers to each other, and a cylinder for communicating the oil storage chambers with each other is arranged. An air vent plug is provided in the first oil storage chamber in the pipe line of the oil storage chamber, A reservoir tank for replenishing oil is provided in the oil storage chamber, and a piston having a pressure bias to the opposing oil storage chamber is inserted into the oil storage chamber on the side where the reservoir tank is provided. It is proposed to provide a hydraulic pipe line characterized by the above.

(Operation) According to the present invention, one of the oil storage chambers in the cylinder is separated by the piston located on the other side of the hydraulic pipe line from the clutch pedal to the clutch booster, and the return of the hydraulic oil is always performed. Bias will be given.

(Embodiment) Hereinafter, details of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a model diagram showing a configuration of a hydraulic pipe line of a hydraulic clutch operating mechanism according to an embodiment of the present invention.

The feature of this embodiment is that the middle of the full length portion of the hydraulic pipe line is divided and one and the other of the divided parts are independently bleeded.

That is, the hydraulic clutch operation mechanism 1 is provided in the hydraulic pipe line 2
Is connected to a master cylinder 4 which is actuated by a clutch pedal 3 in the longitudinal direction, and a hydraulic oil supply reservoir tank 5 is connected to the master cylinder 4 in the hydraulic pipe line 2.

The other longitudinal end of the hydraulic pipe line 2 is connected to a clutch booster 6, and the crack booster 6 is provided with an air vent plug 7.

The hydraulic pipe line 2 is divided into two systems halfway in the longitudinal direction, and a cylinder 8 is arranged at this divided position. The cylinder 8 is provided with a first oil storage chamber 8B and a second oil storage chamber 8C that are divided by a partition wall 8A to divide the inside.

One of these oil storage chambers is connected to a pipe passage extending to the clutch pedal 3 side, and an air bleed plug 9 is provided to enable air bleeding in the pipe passage including this oil storage chamber. In the case of this embodiment, reference numeral 8B is used as one of the oil storage chambers.
The oil storage room indicated by is applicable.

The other one of the oil storage chambers described above is connected to a pipeline extending to the clutch booster 6 side, and a reservoir tank 10 that can replenish hydraulic oil in the pipeline including this oil storage chamber.
Is connected. In the case of the present embodiment, the other oil storage chamber corresponds to the oil storage chamber indicated by reference numeral 8C.

The first and second oil storage chambers 8B and 8C communicate with each other through an opening formed in the partition wall 8A, and the second oil storage chamber 8C has a first oil storage chamber 8 by a spring 11. A piston 12 that is pressurized and urged toward 8B is arranged.

Since the present embodiment has the above-mentioned structure, the hydraulic pipe line 2 from the clutch pedal 3 to the clutch booster 6 has two systems with the position of the cylinder 8 as a boundary, and the subdivision along the entire length is performed. become.

Therefore, according to the present embodiment, the reservoir tanks 5 and 10 and the air bleeding plugs 7 and 9 are provided in the respective systems, and the hydraulic oil pipe line on the clutch pedal 3 side is provided with the other oil reservoir in the cylinder 8. Since the return of the hydraulic oil is strongly performed by the piston 12 located in the chamber 8C, the return of the hydraulic oil is delayed when the air bleeding work is performed in the pipeline on the clutch pedal 3 side. Done without any effort.

Further, when air is bleeded from the hydraulic line on the clutch booster 6 side, the air can be bleeded by the air bleeding plug 7 provided in the clutch booster 6, and the hydraulic oil can be replenished independently by the system via the reservoir tank 10. Can be done.

(Effect of the Invention) As described above, according to the present invention, the air bleeding work and the hydraulic oil replenishment in each pipeline are performed with the hydraulic pipeline extending from the clutch pedal to the clutch booster being divided to shorten the pipeline length. Since it is possible to return the hydraulic oil, it is possible to shorten the time required to return the hydraulic oil.Moreover, it is possible to quickly return the hydraulic oil to prevent unnecessary replenishment of the hydraulic oil. It is possible to prevent a change in the operation amount of the release fork when the clutch is depressed.

[Brief description of drawings]

FIG. 1 is a model view showing a main structure of a hydraulic clutch operating mechanism according to an embodiment of the present invention. 1 ... hydraulic clutch operating mechanism, 2 ... hydraulic pipeline, 3
...... Clutch pedal, 5 …… Reservoir tank located on the clutch pedal side, 6 …… Clutch booster, 7 …… Air bleeding plug located on the clutch booster side, 8 …… Cylinder, 8A …… Partition wall, 8B …… 1 oil storage chamber, 8C ... 2nd
Oil storage chamber, 9 ... Air vent plug located on the clutch pedal side, 12 ... Piston.

Claims (1)

[Scope of utility model registration request] 1. A structure of a hydraulic pipe line from a clutch pedal in a hydraulic clutch operating mechanism to a clutch booster for swinging a release fork in a clutch housing, wherein the hydraulic pipe line is divided in the middle, and the divided position is divided. Has a first oil storage chamber connected to the pipeline on the clutch pedal side and a second oil storage chamber connected to the pipeline on the clutch booster side, and these oil storage chambers are connected to each other. Of the oil storage chamber, an air vent plug is provided in the first oil storage chamber in the pipeline, and a reservoir tank for replenishing oil is provided in the second oil storage chamber, and , A hydraulic clutch provided with a hydraulic pipe line characterized in that a piston having a pressure bias to the opposite oil storage chamber is inserted into the oil storage chamber on the side where the reservoir tank is provided. Chi operation mechanism.