CN210637409U

CN210637409U - Piston assembly applied to clutch release main cylinder

Info

Publication number: CN210637409U
Application number: CN201921133080.2U
Authority: CN
Inventors: 葛建孟; 刘家水
Original assignee: Zhejiang Pentium Intelligent Brake System Co ltd
Current assignee: Zhejiang Pentium Intelligent Brake System Co ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-05-29
Anticipated expiration: 2029-07-18

Abstract

The utility model provides a piston assembly applied to a clutch release main cylinder, which comprises a piston, wherein the piston is provided with a through hole and a valve hole, the front end of the piston internally comprises a hole check ring, a sealing ring, a compression spring and a valve rod, and the hole check ring is arranged in a stepped hole at the front end of the piston; the sealing ring is arranged in the stepped hole; the compression spring is arranged between the check ring for hole and the sealing ring; the left end of the valve rod is embedded in the sealing ring. The utility model provides a be applied to piston assembly of clutch release main cylinder owing to be equipped with valve rod and sealing washer in the valve body, can effectively promote the stability of pressure differential in the cylinder body, and the leakproofness is better, consequently makes the utility model discloses pressure differential in the cylinder body is stable, and the leakproofness is stronger.

Description

Piston assembly applied to clutch release main cylinder

Technical Field

The utility model relates to a be applied to clutch release main cylinder's piston assembly.

Background

The clutch is typically mounted between a clutch pedal and a clutch release cylinder.

The existing clutch release main cylinder is internally provided with a piston assembly which consists of a piston, a valve cover, a valve and a valve bracket, and the designed structure is complex, so that the product development difficulty is high, the cost is high, the cutting processing of the piston is too complex, the processing is difficult, the quality is difficult to control, and the main reason is that the rubber deformation is small and the separation is difficult; the deformation is large and difficult to control. In addition, after the parts are assembled, the characteristic parameters are unstable, the parts are not durable enough, and the service life is short.

In conclusion, how make the utility model discloses under the unchangeable condition of pressure differential in the cylinder body, guarantee good leakproofness, the problem that technical personnel in the field need to solve urgently.

SUMMERY OF THE UTILITY MODEL

This scheme provides a piston assembly who is applied to clutch release main cylinder to the problem and the demand that mention above, because of the utility model discloses pressure differential in the cylinder body is stable, and the leakproofness is stronger, and it can solve above-mentioned technical problem owing to adopted following technical scheme.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a be applied to clutch release master cylinder's piston assembly, includes the piston, be equipped with through-hole and valve opening on the piston, the through-hole with the valve opening intercommunication, the front end of piston is inside to include:

the hole retainer ring is arranged in a stepped hole at the front end of the piston, and a left opening of the stepped hole is communicated with an inner cavity of the main cylinder;

the sealing ring is arranged in the stepped hole, the stepped hole is communicated with the valve hole, the right end edge of the sealing ring is abutted against the bottom wall of the stepped hole, and the right end edge of the sealing ring is positioned on the periphery of the left end opening of the valve hole;

a compression spring disposed between the retainer ring for hole and the seal ring;

the left end of the valve rod is embedded in the sealing ring, and a valve core of the valve rod is matched with the valve hole.

Further, the right end edge of the sealing ring is provided with an annular lug which abuts against the bottom wall of the stepped hole.

Furthermore, an annular chute is formed in the periphery of the sealing ring, and the end of the compression spring is pressed in the annular chute.

Further, be equipped with first round hole, second round hole and the third round hole that is linked together in proper order in the sealing washer, the left end of valve rod is including the first shaft part, second shaft part and the third shaft part that connect gradually, first shaft part inlays to be established in the first round hole, the second shaft part inlays to be established in the second round hole, the third shaft part inlays to be established in the third round hole.

Further, the valve core is conical.

Further, the valve hole is a taper hole.

The beneficial effects of the utility model are that, after the input port is closed, interior cavity is started to build pressure, piston assembly begins to work, makes through pressure the piston moves forward, and promotes the case moves forward, because first shaft section the second shaft section with third shaft section correspondence is inlayed in the first round hole, the second round hole and the third round hole of sealing washer, consequently drive the valve and impel forward for a pair of compression spring is in compression state, thereby carries out stability control to the pressure differential in the cylinder body. The pressure flow is output through the inner cavity through the output port. Make the utility model discloses pressure differential in the cylinder body is stable, and the leakproofness is stronger.

The following description of the preferred embodiments for carrying out the present invention will be made in detail with reference to the accompanying drawings so that the features and advantages of the present invention can be easily understood.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly described below. The drawings are intended to depict only some embodiments of the invention, and not all embodiments of the invention are limited thereto.

Fig. 1 is an assembly view of the present invention.

Fig. 2 is a sectional view of the valve of the present invention.

Fig. 3 is a cross-sectional view of the valve stem of the present invention.

List of reference numerals: the valve comprises a cylinder body 1, an inner cavity 2, a compression spring 21, a piston 3, a through hole 31, a valve hole 32, a stepped hole 33, a valve rod 4, a first shaft section 41, a second shaft section 42, a third shaft section 43, a valve core 44, a valve 5, a front convex part 51, an annular inclined groove 52, an annular lug 53, a first round hole 54, a second round hole 55, a third round hole 56, a valve spring 6, a hole retainer 7 and a dust cover 8.

Detailed Description

In order to make the technical solution of the present invention, its purpose, technical solution and advantages become clearer, the drawings of the embodiments of the present invention will be combined hereinafter, and the technical solution of the embodiments of the present invention will be clearly and completely described. Like reference symbols in the various drawings indicate like elements. It should be noted that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.

Referring to fig. 1 to 3, the piston assembly applied to the clutch release master cylinder shown in fig. 1 includes a piston 3, the piston 3 is provided with a through hole 31 and a valve hole 32, the through hole 31 is communicated with the valve hole 32, and is characterized in that the front end of the piston 3 includes a hole retainer 7, a seal ring 5, a compression spring 6 and a valve rod 4 inside, the hole retainer 7 is arranged in a stepped hole 33 at the front end of the piston 3, and the left opening of the stepped hole 33 is communicated with an inner cavity 2 of the master cylinder; the sealing ring 5 is arranged in the stepped hole 33, the stepped hole 33 is communicated with the valve hole 32, the right end edge of the sealing ring 5 abuts against the bottom wall of the stepped hole 33, and the right end edge of the sealing ring 5 is positioned on the periphery of the left end opening of the valve hole 32; the compression spring 6 is arranged between the hole retainer ring 7 and the sealing ring 5; the left end of the valve rod 4 is embedded in the sealing ring 5, and the valve core 44 of the valve rod 4 is matched with the valve hole 32.

As shown in fig. 2, the right end edge of the seal ring 5 is provided with an annular lug 53, and the annular lug 53 abuts against the bottom wall of the stepped hole 33.

Preferably, an annular inclined groove 52 is formed in the periphery of the sealing ring 5, and the end of the compression spring 6 is pressed in the annular inclined groove 52.

Preferably, the left end edge of the sealing ring 5 is provided with a front convex part 51.

As shown in fig. 3, a first circular hole 54, a second circular hole 55 and a third circular hole 56 which are sequentially communicated are arranged in the sealing ring 5, the left end of the valve rod 4 comprises a first shaft section 41, a second shaft section 42 and a third shaft section 43 which are sequentially connected, the first shaft section 41 is embedded in the first circular hole 54, the second shaft section 42 is embedded in the second circular hole 55, and the third shaft section 43 is embedded in the third circular hole 56.

Preferably, the valve core 44 is conical.

Preferably, the valve hole 32 is a tapered hole.

Preferably, two coil springs 21 are arranged in the inner cavity 2, the two coil springs 21 are arranged on the inner wall of the inner cavity 2, and the rear end of the compression spring 21 is pressed against the piston 3.

Preferably, the rear end of the cylinder body 1 is also provided with a dust cover 8, the front end of the dust cover 8 extends into the inner cavity 2, and the structure can play a certain dust-proof effect.

The working process is as follows: after the input port is closed, the inner cavity starts to generate pressure, the piston 3 starts to work, the piston 3 moves forwards through the pressure and pushes the valve core 44 to move forwards, and the first shaft section 41, the second shaft section 42 and the third shaft section 43 are correspondingly embedded in the first circular hole 54, the second circular hole 55 and the third circular hole 56 of the sealing ring, so that the pair of compression springs 6 are in a compression state, and the pressure difference in the cylinder body is stably controlled. Pressure flows through interior cavity 2 passes through the delivery outlet output makes the utility model discloses pressure differential in the cylinder body is stable, and the leakproofness is stronger.

It should be noted that the embodiments of the present invention are only the preferred embodiments for implementing the present invention, and all the obvious modifications and changes belonging to the overall concept of the present invention should fall within the protection scope of the present invention.

Claims

1. The utility model provides a be applied to piston assembly of clutch release master cylinder, includes piston (3), be equipped with through-hole (31) and valve opening (32) on piston (3), through-hole (31) with valve opening (32) intercommunication, its characterized in that, the front end of piston (3) is inside to include:

the hole retainer ring (7), the hole retainer ring (7) is arranged in a stepped hole (33) at the front end of the piston (3), and the left opening of the stepped hole (33) is communicated with the inner cavity (2) of the master cylinder;

the sealing ring (5) is arranged in the stepped hole (33), the stepped hole (33) is communicated with the valve hole (32), the right end edge of the sealing ring (5) abuts against the bottom wall of the stepped hole (33), and the right end edge of the sealing ring (5) is located on the periphery of the left end opening of the valve hole (32);

a compression spring (6), wherein the compression spring (6) is arranged between the hole retainer ring (7) and the sealing ring (5);

the left end of the valve rod (4) is embedded in the sealing ring (5), and a valve core (44) of the valve rod (4) is matched with the valve hole (32).

2. Piston assembly for a clutch master cylinder according to claim 1, characterized in that the right end edge of the sealing ring (5) is provided with an annular lug (53), the annular lug (53) resting on the bottom wall of the stepped bore (33).

3. The piston assembly applied to the clutch release master cylinder according to claim 1, wherein an annular inclined groove (52) is formed in the periphery of the seal ring (5), and the end of the compression spring (6) is pressed in the annular inclined groove (52).

4. The piston assembly applied to the clutch release master cylinder according to claim 1, wherein a first round hole (54), a second round hole (55) and a third round hole (56) which are communicated in sequence are formed in the sealing ring (5), the left end of the valve rod (4) comprises a first shaft section (41), a second shaft section (42) and a third shaft section (43) which are connected in sequence, the first shaft section (41) is embedded in the first round hole (54), the second shaft section (42) is embedded in the second round hole (55), and the third shaft section (43) is embedded in the third round hole (56).

5. Piston assembly for a clutch release master cylinder according to claim 1, characterized in that the spool (44) is conical.

6. The piston assembly applied to a clutch master cylinder according to claim 1, wherein the valve hole (32) is a tapered hole.