CN113669382A

CN113669382A - Clutch main cylinder structure with buffering function

Info

Publication number: CN113669382A
Application number: CN202110878612.0A
Authority: CN
Inventors: 陈章明; 刘影; 万龙; 毛彬彬; 刘菲; 李洪; 徐谦
Original assignee: Jiangxi Jiangling Group Shenling Auto Parts Co ltd
Current assignee: Jiangxi Jiangling Group Shenling Auto Parts Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2021-11-19

Abstract

The invention relates to the technical field of automobile clutches, in particular to a clutch master cylinder structure with a buffering function, which comprises a cylinder body, an oil pipe joint, a push rod, a piston, a return spring, a buffer valve and a dustproof plug, wherein the oil pipe joint is arranged on the cylinder body; a pressure cavity is arranged in the cylinder body, the push rod is connected with the piston, the piston is arranged in the pressure cavity in a sliding mode, and two ends of the return spring are respectively contacted with the inner wall of the pressure cavity and the piston; be provided with oil inlet, oil-out and interface on the cylinder body, oil pipe connects through oil inlet and pressure chamber intercommunication, and the dust plug is connected with the cylinder body, and the dust plug is located oil outlet department, and the cushion valve includes valve body and elasticity preforming, and the elasticity preforming sets up in the valve body, and the valve body is connected with the cylinder body, and the valve body passes through interface and pressure chamber intercommunication. The invention can eliminate the feeling of feet so as to improve the driving comfort.

Description

Clutch main cylinder structure with buffering function

Technical Field

The invention relates to the technical field of automobile clutches, in particular to a clutch master cylinder structure with a buffering function.

Background

For the existing clutch, in the running process of the automobile clutch, when a driver steps on the clutch, the driver feels feet, and the driving comfort level is lower.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a clutch master cylinder structure with a buffering function, which can eliminate the feeling of footstep supporting and improve the driving comfort.

According to the technical scheme, the clutch master cylinder structure with the buffering function comprises a cylinder body, an oil pipe joint, a push rod, a piston, a return spring, a buffering valve and a dustproof plug;

a pressure cavity is arranged in the cylinder body, the push rod is connected with the piston, the piston is arranged in the pressure cavity in a sliding mode, and two ends of the return spring are respectively contacted with the inner wall of the pressure cavity and the piston; be provided with oil inlet, oil-out and interface on the cylinder body, oil pipe connects through oil inlet and pressure chamber intercommunication, and the dust plug is connected with the cylinder body, and the dust plug is located oil outlet department, and the cushion valve includes valve body and elasticity preforming, and the elasticity preforming sets up in the valve body, and the valve body is connected with the cylinder body, and the valve body passes through interface and pressure chamber intercommunication.

Preferably, the end of the cylinder body is provided with a mounting hole.

Preferably, the valve body is connected with the cylinder body in a sealing mode through a gasket.

Preferably, the contact part of the gasket, the valve body and the cylinder body is dripped with red glue.

Preferably, the inner wall of the pressure chamber is coated with grease.

Preferably, the end part of the cylinder body is connected with a concave gasket, the end part of the cylinder body is provided with a clamping groove for clamping the concave gasket, the concave gasket comprises a concave surface, and the push rod comprises a step surface corresponding to the concave surface.

Preferably, the end of the cylinder body is provided with a dust cover, and the push rod penetrates through the dust cover.

Compared with the prior art, the invention has the following beneficial technical effects:

the buffer valve is added on the basis of the existing clutch master cylinder, and when the traditional clutch master cylinder realizes hydraulic pushing of a clutch slave cylinder, the elastic pressing sheet in the buffer valve enables the volume of hydraulic pressure P in a pipeline to be increased along with the deformation of the elastic pressing sheet, so that the pressure is relieved; make clutch hydraulic system's hydraulic shock slow, reduce the impact to the gearbox, make the navigating mate not have the top foot feel, the foot feel is better, more comfortable.

Drawings

FIG. 1 is a front sectional view of an embodiment of the present invention;

FIG. 2 is a top view of a portion of an embodiment of the present invention;

FIG. 3 is a graph of performance of an embodiment of the present invention with and without a trim valve.

Reference numerals: 100. a cylinder body; 1. an oil pipe joint; 2. a push rod; 3. a piston; 31. a return spring; 41. an oil outlet; 42. an interface; 5. a gasket; 6. a cushion valve; 61. a valve body; 62. elastic tabletting; 7. and (4) a dust plug.

Detailed Description

First embodiment

As shown in fig. 1-2, the clutch master cylinder structure with a buffering function provided by the invention comprises a cylinder body 100, an oil pipe joint 1, a push rod 2, a piston 3, a return spring 31, a buffer valve 6 and a dust plug 7;

the end part of the cylinder body 100 is provided with a mounting hole, a pressure cavity is arranged in the cylinder body 100, the inner wall of the pressure cavity is coated with lubricating grease, so that the piston 3 can slide more smoothly, the push rod 2 is connected with the piston 3, the piston 3 is arranged in the pressure cavity in a sliding way, and two ends of the return spring 31 are respectively contacted with the inner wall of the pressure cavity and the piston 3; the cylinder body 100 is provided with an oil inlet, an oil outlet 41 and a connector 42, the oil pipe connector 1 is communicated with a pressure cavity through the oil inlet, oil enters the pressure cavity through the oil pipe connector 1 and the oil inlet, the dust plug 7 is connected with the cylinder body 100, the dust plug 7 is positioned at the oil outlet 41, when the hydraulic buffer valve is used, the dust plug 7 is taken down, a part of oil is extruded into a pipeline from the oil outlet 41, the generated pressure is P1, the buffer valve 6 comprises a valve body 61 and an elastic pressing sheet 62, the elastic pressing sheet 62 is arranged in the valve body 61, the valve body 61 is connected with the cylinder body 100, the valve body 61 is communicated with the pressure cavity through the connector 42, the other part of oil is extruded to the elastic pressing sheet 62 from the connector 42, the elastic pressing sheet 62 deforms to absorb the pressure of the oil in the deformation process, so that the pressure is reduced and gradually reduced to P2, further, the pressure P1 is weakened along with the gradual reduction of P2, the impact is reduced, and the buffer effect is achieved, the driver has no feeling of footstep.

In the embodiment, the buffer valve 6 is added on the basis of the existing clutch master cylinder, and when the traditional clutch master cylinder realizes hydraulic pressure pushing of a clutch slave cylinder, the elastic pressing sheet 62 in the buffer valve 6 enables the volume of hydraulic pressure P in a pipeline to be increased along with the deformation of the elastic pressing sheet 62, so that the pressure is relieved; make clutch hydraulic system's hydraulic shock slow, reduce the impact to the gearbox, make the navigating mate not have the top foot feel, the foot feel is better, more comfortable.

As shown in fig. 3, the curve with the function of the cushion valve 6 is significantly slower, whereas the curve without the function of the cushion valve 6 is straight and steep.

Second embodiment

The present invention provides a clutch master cylinder structure with a buffering function, which is different from the first embodiment in that a valve body 61 is hermetically connected to a cylinder body 100 through a gasket 5. The contact part of the gasket 5, the valve body 61 and the cylinder body 100 is dripped with red glue. The gasket 5 can play an effective sealing effect, and the red glue further improves the sealing performance.

The end part of the cylinder body 100 is connected with a concave gasket, the end part of the cylinder body 100 is provided with a clamping groove for clamping the concave gasket, the concave gasket comprises a concave surface, the push rod 2 comprises a step surface corresponding to the concave surface, and the limit position of the push rod 2 in the movement can be in contact with the concave surface of the concave gasket through the step surface. The end of the cylinder body 100 is provided with a dust cover, and the push rod 2 penetrates through the dust cover, so that the dust-proof effect is guaranteed.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A clutch master cylinder structure with a buffering function is characterized by comprising a cylinder body (100), an oil pipe joint (1), a push rod (2), a piston (3), a return spring (31), a buffer valve (6) and a dustproof plug (7);

a pressure cavity is arranged in the cylinder body (100), the push rod (2) is connected with the piston (3), the piston (3) is arranged in the pressure cavity in a sliding mode, and two ends of the return spring (31) are respectively contacted with the inner wall of the pressure cavity and the piston (3); be provided with the oil inlet on cylinder body (100), oil-out (41) and interface (42), oil pipe joint (1) is through oil inlet and pressure chamber intercommunication, dustproof stopper (7) are connected with cylinder body (100), and dustproof stopper (7) are located oil-out (41) department, cushion valve (6) are including valve body (61) and elasticity preforming (62), elasticity preforming (62) set up in valve body (61), valve body (61) are connected with cylinder body (100), and valve body (61) pass through interface (42) and pressure chamber intercommunication.

2. The clutch master cylinder structure with the buffering function according to claim 1, wherein the end of the cylinder body (100) is provided with a mounting hole.

3. The clutch master cylinder structure with the buffering function according to claim 1, wherein the valve body (61) is sealingly connected to the cylinder body (100) through a gasket (5).

4. The clutch master cylinder structure with the buffering function according to claim 3, wherein red glue is dripped at the contact part of the gasket (5) and the valve body (61) and the cylinder body (100).

5. The clutch master cylinder structure with the buffering function according to claim 1, wherein the inner wall of the pressure chamber is coated with grease.

6. The clutch master cylinder structure with the buffering function according to claim 1, wherein a concave gasket is connected to an end of the cylinder body (100), a clamping groove for clamping the concave gasket is formed in the end of the cylinder body (100), the concave gasket comprises a concave surface, and the push rod (2) comprises a step surface corresponding to the concave surface.

7. The clutch master cylinder structure with the buffering function according to claim 1, wherein a dust cover is provided at an end of the cylinder body (100), and the push rod (2) penetrates through the dust cover.