Piston for clutch master cylinder

Abstract

The piston for the clutch master cylinder comprises a piston body, the piston body is of an integrally-formed structure, an annular groove is formed in the top of the piston body, a rubber ring is arranged on the inner side of the annular groove, a spring is arranged at the top end of the piston body, and the bottom end of the spring is clamped to the top of the annular groove. The bottom end of the spring is attached to the top of the rubber ring, and the spring is detachably connected with the piston body. The piston body is of an integrally-formed structure and is made of materials such as nylon and glass fibers, so that the whole piston body is light, meanwhile, the annular groove is formed in the top of the piston body, the rubber ring is arranged in the annular groove, and the bottom of the spring is clamped on the inner side of the annular groove. The spring can be stably connected with the piston body, and the piston body can be conveniently and stably installed in the clutch master cylinder in cooperation with the spring. The bottom of the piston body is sleeved with the metal sleeve, and the situation that the piston body cannot be normally used due to long-time abrasion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pistons, in particular to a piston used for a clutch master cylinder. Background Art

[0002] The clutch master cylinder plays a vital role in a vehicle's transmission system. It generates hydraulic pressure through the movement of its pistons, controlling the clutch's engagement and disengagement. Currently, the clutch master cylinder pistons commonly found on the market have several drawbacks.

[0003] In the prior art, the utility model patent with patent number CN202223431961.7 discloses a split piston and clutch master cylinder, comprising: a piston body, a spring seat, and a push rod seat. The piston body includes a first end and a second end, wherein, in the axial direction of the piston body, the first end is closer to the spring in the working chamber of the clutch master cylinder than the second end. The spring seat is detachably fixed to the first end of the piston body to jointly form a first joint structure having a main leather cup groove on the outer wall. The main leather cup groove is located at the junction of the spring seat and the first end of the piston body. The push rod seat is detachably fixed to the second end of the piston body to jointly form a second joint structure. This solution solves the problem that traditional pistons cannot meet some leather cup assembly requirements.

[0004] The piston of the clutch master cylinder provided by the above patent is a split piston. This split piston is prone to disintegration due to loose bolts after long-term use. At the same time, this piston is not conducive to stable cooperation with the spring connecting the piston. Utility Model Content

[0005] The purpose of the utility model is to provide a piston for a clutch master cylinder, aiming to improve the problem that the existing split piston for the clutch master cylinder is prone to disintegration due to loose bolts after long-term use, and at the same time, this split piston is not conducive to stable cooperation with the spring connecting the piston.

[0006] The utility model is achieved in this way:

[0007] A piston for a clutch master cylinder includes a piston body, which is an integrally formed structure. A ring groove is provided on the top of the piston body, a rubber ring is provided on the inside of the ring groove, and a spring is provided on the top of the piston body. The bottom end of the spring is engaged with the top of the ring groove and the bottom end of the spring is in contact with the top of the rubber ring. The spring and the piston body are detachably connected.

[0008] Furthermore, the piston body is made of nylon and glass fiber, and a plurality of reinforcing rods are evenly arranged in the middle of the side of the piston body to enhance the strength of the piston body.

[0009] Furthermore, two limiting openings are symmetrically provided on the side surface of the piston body along the upper side of the ring groove, and a connecting head is provided at the bottom of the piston body, and an arc-shaped groove is provided on the bottom surface of the connecting head.

[0010] Furthermore, a plurality of sealing rings are provided on the side of the rubber ring from top to bottom for sealing the gap between the piston body and the piston cylinder. A sleeve hole is provided in the middle of the rubber ring, and the sleeve hole is sleeved on the inner side of the ring groove.

[0011] Furthermore, a clamp is connected to the bottom end of the spring. The clamp is an unclosed annular structure. Disassembly holes are provided at both ends of the clamp. The disassembly holes are used to cooperate with disassembly tools to open the clamp to facilitate installation or disassembly of the clamp.

[0012] Furthermore, it also includes a metal sleeve, the top of the metal sleeve is provided with a sleeve groove, the metal sleeve is arranged on the connecting head, and the bottom of the metal sleeve is provided with an arc plate, the arc plate forms an arc groove at the bottom of the metal sleeve, and the arc plate is arranged to fit the arc groove.

[0013] The piston body of this utility model is an integrally molded structure, and is made of materials such as nylon and fiberglass, making the entire piston body lightweight. A ring groove is provided on the top of the piston body, and a rubber ring is installed inside the ring groove. The bottom of the spring engages inside the ring groove, ensuring that the spring is stably connected to the piston body, facilitating stable installation of the piston body and the spring in the clutch master cylinder. A metal sleeve is provided on the bottom of the piston body of this utility model to prevent the piston body from malfunctioning due to long-term wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the utility model as a whole;

[0015] Figure 2 It is a structural diagram of the piston body of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the rubber ring of the utility model;

[0017] Figure 4 It is a structural diagram of the spring of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the metal sleeve of the utility model. DETAILED DESCRIPTION

[0019] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0020] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0021] Example 1

[0022] like Figure 1 and Figure 2 As shown, a piston for a clutch master cylinder includes a piston body 1. The piston body 1 is an integrally molded structure. The piston body 1 is formed into an integral structure by injecting material into a mold, thereby ensuring that the piston body 1 is sufficiently stable during use. The top of the piston body 1 is provided with an annular groove 12, and a rubber ring 2 is provided inside the annular groove 12. A spring 3 is provided at the top of the piston body 1. The annular groove 12 facilitates the installation of the rubber ring 2 and the spring 3, thereby ensuring a seal between the piston body 1 and the piston cylinder, while also ensuring that the spring 3 is stably connected to the piston body 1. The bottom end of the spring 3 is engaged with the top of the annular groove 12, and the bottom end of the spring 3 is in contact with the top of the rubber ring 2. The spring 3 and the piston body 1 are detachably connected. This structure ensures that the spring 3 can be removed, and also allows the spring 3 to be stably used in conjunction with the piston body 1.

[0023] like Figure 2 As shown, the piston body 1 is made of nylon and glass fiber. This structure can make the piston body 1 lightweight while ensuring the strength of the piston body 1, so that the piston body 1 can be used stably, and the piston body 1 has a certain toughness. A plurality of reinforcing rods 11 are evenly arranged in the middle of the side of the piston body 1 to enhance the strength of the piston body 1 and avoid the problem of the piston body 1 being prone to breakage. Two limiting openings 13 are symmetrically arranged above the ring groove 12 on the side of the piston body 1. The limiting openings 13 are convenient for matching with the spring 3 to limit the spring 3 and ensure that the spring 3 is stably connected to the piston body 1. A connector 14 is provided at the bottom of the piston body 1, and an arc-shaped groove 15 is provided on the bottom surface of the connector 14. The connector 14 cooperates with the arc-shaped groove 15 to facilitate connection with the rod that pushes the piston body 1, thereby facilitating the rod to push the piston body 1 to move when the clutch is stepped on.

[0024] like Figure 3As shown, a plurality of sealing rings 21 are provided on the side of the rubber ring 2 from top to bottom, which are used to seal the gap between the piston body 1 and the piston cylinder. A sleeve hole 22 is provided in the middle of the rubber ring 2, and the sleeve hole 22 is sleeved on the inner side of the ring groove 12; this structure facilitates the stable installation of the rubber ring 2 inside the ring groove 12, and at the same time, the rubber ring 2 can also seal the gap between the piston body 1 and the inner side of the piston cylinder.

[0025] like Figure 4 As shown, the bottom end of the spring 3 is connected to a clamp 31. The clamp 31 is an open ring structure, which facilitates the smooth engagement of the bottom of the spring 3 with the top of the piston body 1. Disassembly holes 32 are provided at both ends of the clamp 31. The disassembly holes 32 are used to cooperate with a disassembly tool to open the clamp 31 to facilitate installation or removal of the clamp 31.

[0026] Working Principle: During use, the rubber ring 2 is placed inside the annular groove 12 at the top of the piston body 1. The clamp 31 at the bottom of the spring 3 is then engaged with the annular groove 12. The piston body 1, rubber ring 2, and spring 3 are then inserted into the piston cylinder of the clutch master cylinder. The rod that pushes the piston body 1 is then positioned against the groove at the bottom of the piston body 1. The rod is then secured in place. The clutch master cylinder is then installed in the corresponding position on the vehicle and can be used normally. Compared with the prior art, the piston body 1 of the present application is an integrated structure and is made of materials such as nylon and fiberglass, making the entire piston body 1 lightweight. Furthermore, the annular groove 12 at the top of the piston body 1 is provided with the rubber ring 2 inside the groove 12. The bottom of the spring 3 engages with the inner groove 12, ensuring that the spring 3 is stably connected to the piston body 1, facilitating stable installation of the piston body 1 and the spring 3 in the clutch master cylinder. Furthermore, the integrated piston body 1 is less likely to disintegrate after prolonged use.

[0027] Example 2

[0028] like Figure 1 and Figure 2 As shown, a piston for a clutch master cylinder includes a piston body 1. The piston body 1 is an integrally molded structure. The piston body 1 is formed into an integral structure by injecting material into a mold, thereby ensuring that the piston body 1 is sufficiently stable during use. The top of the piston body 1 is provided with an annular groove 12, and a rubber ring 2 is provided inside the annular groove 12. A spring 3 is provided at the top of the piston body 1. The annular groove 12 facilitates the installation of the rubber ring 2 and the spring 3, thereby ensuring a seal between the piston body 1 and the piston cylinder, while also ensuring that the spring 3 is stably connected to the piston body 1. The bottom end of the spring 3 is engaged with the top of the annular groove 12, and the bottom end of the spring 3 is in contact with the top of the rubber ring 2. The spring 3 and the piston body 1 are detachably connected. This structure ensures that the spring 3 can be removed, and also allows the spring 3 to be stably used in conjunction with the piston body 1.

[0029] like Figure 2 As shown, the piston body 1 is made of nylon and glass fiber. This structure can make the piston body 1 lightweight while ensuring the strength of the piston body 1, so that the piston body 1 can be used stably, and the piston body 1 has a certain toughness. A plurality of reinforcing rods 11 are evenly arranged in the middle of the side of the piston body 1 to enhance the strength of the piston body 1 and avoid the problem of the piston body 1 being prone to breakage. Two limiting openings 13 are symmetrically arranged above the ring groove 12 on the side of the piston body 1. The limiting openings 13 are convenient for matching with the spring 3 to limit the spring 3 and ensure that the spring 3 is stably connected to the piston body 1. A connector 14 is provided at the bottom of the piston body 1, and an arc-shaped groove 15 is provided on the bottom surface of the connector 14. The connector 14 cooperates with the arc-shaped groove 15 to facilitate connection with the rod that pushes the piston body 1, thereby facilitating the rod to push the piston body 1 to move when the clutch is stepped on.

[0030] like Figure 3 As shown, a plurality of sealing rings 21 are provided on the side of the rubber ring 2 from top to bottom, which are used to seal the gap between the piston body 1 and the piston cylinder. A sleeve hole 22 is provided in the middle of the rubber ring 2, and the sleeve hole 22 is sleeved on the inner side of the ring groove 12; this structure facilitates the stable installation of the rubber ring 2 inside the ring groove 12, and at the same time, the rubber ring 2 can also seal the gap between the piston body 1 and the inner side of the piston cylinder.

[0031] like Figure 4 As shown, the bottom end of the spring 3 is connected to a clamp 31. The clamp 31 is an open ring structure, which facilitates the smooth engagement of the bottom of the spring 3 with the top of the piston body 1. Disassembly holes 32 are provided at both ends of the clamp 31. The disassembly holes 32 are used to cooperate with a disassembly tool to open the clamp 31 to facilitate installation or removal of the clamp 31.

[0032] like Figure 1 and Figure 5 As shown, the piston body 1 is also provided with a metal sleeve 4, which is used to cooperate with the connector 14. Wear between the connector 14 and the rod may cause the piston body 1 to become unusable. A sleeve groove 42 is provided on the top of the metal sleeve 4, which is mounted on the connector 14. The sleeve groove 42 facilitates the installation of the metal sleeve 4 on the bottom of the piston body 1. Furthermore, an arcuate plate 41 is provided at the bottom of the metal sleeve 4. The arcuate plate 41 forms an arcuate groove at the bottom of the metal sleeve 4, and the arcuate plate 41 is arranged in a manner that fits the arcuate groove 15. This structure facilitates the stable cooperation of the metal sleeve 4 with the connector 14, thereby protecting the connector 14 and preventing excessive wear of the connector 14.

[0033] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A piston for a clutch master cylinder, comprising a piston body (1), characterized in that: The piston body (1) is an integrated structure, the top of the piston body (1) is provided with an annular groove (12), the inner side of the annular groove (12) is provided with a rubber ring (2), and the top of the piston body (1) is provided with a spring (3), the bottom end of the spring (3) is engaged with the top of the annular groove (12), and the bottom end of the spring (3) is in contact with the top of the rubber ring (2), and the spring (3) and the piston body (1) are detachably connected.

2. A piston for a clutch master cylinder according to claim 1, characterized in that: The piston body (1) is made of nylon and glass fiber, and a plurality of reinforcing rods (11) are evenly arranged in the middle of the side of the piston body (1) to enhance the strength of the piston body (1).

3. A piston for a clutch master cylinder according to claim 2, characterized in that: Two limiting openings (13) are symmetrically provided on the side of the piston body (1) above the annular groove (12), and a connecting head (14) is provided at the bottom of the piston body (1), and an arc-shaped groove (15) is provided on the bottom surface of the connecting head (14).

4. The piston for a clutch master cylinder according to claim 1, characterized in that: The side of the rubber ring (2) is provided with a plurality of sealing rings (21) from top to bottom for sealing the gap between the piston body (1) and the piston cylinder. A sleeve hole (22) is provided in the middle of the rubber ring (2), and the sleeve hole (22) is sleeved on the inner side of the ring groove (12).

5. The piston for a clutch master cylinder according to claim 1, characterized in that: The bottom end of the spring (3) is connected to a clamp (31), the clamp (31) is an unclosed annular structure, and both ends of the clamp (31) are provided with disassembly holes (32), and the disassembly holes (32) are used to cooperate with a disassembly tool to open the clamp (31) to facilitate the installation or disassembly of the clamp (31).

6. The piston for a clutch master cylinder according to claim 3, characterized in that: The invention also includes a metal sleeve (4), wherein a sleeve groove (42) is provided on the top of the metal sleeve (4), the metal sleeve (4) is sleeved on the connector (14), and an arc-shaped plate (41) is provided on the bottom of the metal sleeve (4), wherein the arc-shaped plate (41) forms an arc-shaped groove on the bottom of the metal sleeve (4), and the arc-shaped plate (41) is arranged to fit the arc-shaped groove (15).

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