JPS6347338Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is arranged between a master cylinder and a slave cylinder in a power clutch mechanism, for example, and gradually releases the fluid pressure of the connecting slave cylinder of the clutch to smoothly release the fluid pressure. The present invention relates to a fluid valve device used to obtain a clutch connecting operation.

[Conventional technology]

For example, as shown in Japanese Utility Model Publication No. 56-157469, the clutch connection operation does not depend on the skill of the driver, and even if the driver operates the clutch somewhat roughly, the clutch operation mechanism returns slowly. A clutch plate has been proposed in which smooth frictional engagement of the clutch plate can be obtained. However, such a device has a complicated structure and is difficult to adjust from the outside.

It is connected between the master cylinder operation and the slave cylinder, and does not exert any fluid resistance against the action of disengaging the clutch, but exerts fluid resistance only against the action of engaging the clutch, and is effective against the gradual return action of the slave cylinder. It is therefore desirable to have a valve system that provides the action of engaging the clutch.

[Problems to be solved by the invention] Therefore, the purpose of the invention is to solve the above-mentioned problems by using a device that is connected in the middle of a fluid pressure circuit and exerts almost no resistance to fluid flow in one direction. It is an object of the present invention to provide a fluid valve device that exerts fluid resistance against flow in the opposite direction, allows the degree of this fluid resistance to be easily adjusted from the outside, and can be manufactured at low cost.

[Means for solving problems]

In order to achieve the above object, the structure of the present invention is such that a tapered reed valve that partially crosses the end of the inlet passage of the valve housing is supported for relative rotation on an adjustment bolt screwed into the valve housing. .

[Effect]

When pressurized fluid is supplied to the inlet passage 6 of the housing 8, the reed valve 1 bends and exerts almost no resistance to the flow of the pressurized fluid, but the pressurized fluid inside the housing 8 flows from the inlet passage 6 to the outside. When returned, the reed valve 1 traverses the inlet passage 6 and exerts resistance to fluid flow. This resistance force is adjusted by operating the adjusting bolt 6 to move the reed valve 1 in the radial direction of the inlet passage 6.

[Example of idea]

The present invention will be described based on an embodiment. As shown in FIG. 1, an inlet passage 6 is disposed on one end wall of a housing 8, and an outlet passage 7 is disposed on the other end wall so as to be aligned on the same axis. In particular, the end of the inlet passage 6 has a tubular projecting wall 10 projecting from the inner wall of the housing 8.
It is configured to communicate with the inside of the housing 8 at.

An adjustment bolt 2 is screwed into the peripheral wall of the housing 8, and an annular groove 9 is formed in the small diameter shaft portion of the inner end of the adjustment bolt 2, and the support body 3 is supported in this so as to be relatively rotatable. That is, the upper end of the support body 3 is cup-shaped, and the opening edge is caulked into the annular groove 9 so that it can move only in the axial direction with respect to the threading of the adjustment bolt 2. Ru.

The lower end of the support 3 is constructed as a plate projecting into the interior of the housing 8, to which the reed valve 1 is coupled with a rivet 4. As shown in FIG. 2, the reed valve 1 has a width that gradually becomes narrower toward the distal end, and is disposed close to the end surface of the projecting wall 10 at this portion.

In the fluid valve device according to the present invention, the inlet passage 6 is connected to a fluid pressure source, and the outlet passage 7 is connected to a fluid pressure actuator. When the pressurized fluid of the fluid pressure source flows from the inlet passage 6 through the interior of the housing 8 to the outlet passage 7 by operating a known directional valve, the reed valve 1 which is close to the projecting wall 10 is moved by the fluid pressure. Since it can be bent as shown by the chain line in Figure 1,
The fluid resistance becomes very small and the pressure fluid flows smoothly from the inlet passage 6 to the outlet passage 7, quickly actuating the hydraulic actuator.

Conversely, when the directional valve is switched, fluid enters the interior of the housing 8 from the outlet passage 7 and returns to the inlet passage 6 by the force of the return spring arranged on the side of the hydraulic actuator. In this case, the reed valve 1 approaches the projecting wall 10 due to the restoring force, reducing the passage area of the inlet passage 6 and exerting a large fluid resistance. This fluid resistance delays the return speed of the fluid pressure actuator.

Therefore, when the fluid valve device according to the present invention is inserted and connected in the middle of the fluid pressure circuit of a power clutch mechanism, the clutch can be disengaged quickly, and the clutch can be engaged gently, regardless of the operation of the clutch pedal. The plates can be frictionally engaged.

The return speed of this fluid pressure actuator can be adjusted by the fluid resistance of the reed valve 1, and since the reed valve 1 is tapered, the flow of the inlet passage 6 can be adjusted by screwing the adjustment bolt 2. The road area becomes narrower and exerts greater fluid resistance. Conversely, when the adjusting bolt 2 is loosened, the reed valve 1 is pulled up, the passage area of the inlet passage 6 is increased, and the fluid resistance is reduced.

The present invention has a simple configuration and can be easily installed not only in a clutch mechanism but also in other fluid pressure circuits, and the fluid resistance to the fluid pressure circuit can be easily adjusted. An excellent effect can be obtained in that the return speed of the pressure actuator can be arbitrarily adjusted.

It goes without saying that in the above-described embodiment, the support body 3 supported by the adjustment bolt and the reed valve 1 can be constructed integrally.

[Effect of idea]

As described above, the present invention supports the tapered reed valve that partially crosses the end of the inlet passage of the valve housing so that it can rotate relative to the adjustment bolt screwed into the valve housing. The area where the tapered reed valve crosses the inlet passage is adjusted,
This makes it possible to easily adjust the resistance that the reed valve exerts on fluid passing through the inlet passage. Since the reed valve is rotatably supported by the adjustment bolt, it has a simple structure and can be manufactured at low cost.

[Brief explanation of the drawing]

FIG. 1 is a left side sectional view of a fluid valve device according to the present invention, and FIG. 2 is a front view showing the main parts of the device. 1: Reed valve, 2: Adjustment bolt, 3: Support body,
4: Rivet, 6: Inlet, 7: Outlet, 8: Housing.

Claims (1)

[Scope of utility model registration request] A fluid valve device characterized in that a tapered reed valve that partially crosses an end of an inlet passage of a valve housing is supported so as to be relatively rotatable on an adjustment bolt screwed into the valve housing.