Wear-resistant bush-type clutch split pump

Abstract

The utility model provides wear -resisting insert sleeve type clutch pump belongs to clutch pump technical field. Wear -resisting insert sleeve type clutch pump, including pump body, the pump body has pump body mouth, the one end of pump body is installed with the limit sleeve away from the pump mouth, the pump body is installed with spring seat, first spring, piston piece from the pump mouth place to the pump mouth place away from in proper order in pump body by close, spring seat installs in the position of pump body in - close pump mouth place, and first spring one end fixed connection spring seat, and the other end fixed connection piston piece, the side of limit sleeve close to pump body has the push rod for pushing piston forward or backward movement, the push rod rod end is connected with piston piece, the one end of piston piece close to pump body pump mouth is connected with first spring, and the one end close to limit sleeve is connected with push rod. The utility model has the advantages that the light weight and the compression resistance wear -resisting are considered.

Description

Technical Field

[0001] This utility model belongs to the field of clutch slave cylinder technology, specifically a wear-resistant insert type clutch slave cylinder. Background Technology

[0002] With the development of lightweight vehicles, the material of clutch slave cylinder pump bodies has gradually changed from metal to plastic. However, plastic pump bodies are inferior to metal materials in terms of wear resistance and pressure resistance, and cannot fully meet the usage requirements of some models with strict operating conditions. Summary of the Invention

[0003] The purpose of this utility model is to address the aforementioned problems in existing technologies and propose a solution. The wear-resistant insert-type clutch slave pump has the advantages of being lightweight and pressure-resistant and wear-resistant.

[0004] The purpose of this utility model can be achieved through the following technical solution: a wear-resistant insert-type clutch slave pump, including a pump body, the pump body having a pump port, and a limit sleeve installed at the end of the pump body away from the pump port; The pump body is equipped with a spring seat, a first spring, and a piston component in sequence from the point near the pump outlet to the point away from the pump outlet. The spring seat is installed in the pump body near the pump outlet, and one end of the first spring is fixedly connected to the spring seat, while the other end is fixedly connected to the piston component. The limiting sleeve has a push rod on the side near the pump body for pushing the piston to move to the left or right. The end of the push rod is connected to the piston component. The piston component is connected to a first spring at the end near the pump port of the pump body, and the push rod is connected to the end near the limiting sleeve. The first spring, the piston, and the push rod are all located on the central axis of the pump body and are coaxially arranged. A metal bushing for sealing is fitted on the inner side wall of the pump body.

[0005] Preferably, a dust cover is installed on the end of the pump body away from the pump inlet, and the push rod passes through the dust cover and is inserted into the pump body.

[0006] Preferably, a leather cup is also fitted between the piston and the metal bushing.

[0007] Preferably, the pump body has a limiting block on the inner wall of the end away from the pump port, and a retaining ring is installed on the limiting block.

[0008] Compared with the prior art, the advantages of this utility model are: by providing a metal insert on the inner wall of the pump body, the outer wall of the metal insert fits and limits the inner wall of the pump body, which helps to prevent the insert from being eccentric; the overall shell of this product is made of plastic material, which meets the requirements of lightweight and low cost. The piston guide part uses a metal insert, which has excellent pressure resistance and wear resistance; it has the advantages of both lightweight and pressure resistance and wear resistance. Attached Figure Description

[0009] Figure 1 This is a side sectional view of the present invention.

[0010] In the diagram, 2 is the pump body; 21 is the pump port; 3 is the limiting sleeve; 31 is the push rod; 41 is the spring seat; 42 is the first spring; 43 is the piston; 5 is the metal insert; 6 is the dust cover; 7 is the leather cup; 81 is the limiting block; 82 is the retaining ring; and 9 is the O-ring. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0012] like Figure 1 As shown, the wear-resistant insert type clutch slave pump includes a pump body 2, the pump body 2 has a pump port 21, and a limit sleeve 3 is installed at the end of the pump body 2 away from the pump port 21. Inside the pump body 2, from the point near the pump outlet to the point away from the pump outlet, a spring seat 41, a first spring 42, and a piston 43 are installed in sequence. The spring seat 41 is installed inside the pump body 2 near the pump outlet 21. One end of the first spring 42 is fixedly connected to the spring seat 41, and the other end is fixedly connected to the piston 43. The limiting sleeve 3 has a push rod 31 on the side near the pump body 2 for pushing the piston to move to the left or right. The rod end of the push rod 31 is connected to the piston component 43. The piston component 43 is connected to a first spring 42 at one end near the pump port 21 of the pump body, and the push rod 31 is connected to the other end near the limiting sleeve 3. The first spring 42, the piston 43, and the push rod 31 are all located on the central axis of the pump body 2 and are coaxially arranged. A metal sleeve 5 for sealing is fitted on the inner side wall of the pump body 2.

[0013] The inner wall of the pump body 2 is sealed to the metal bushing 5 by an O-ring 9.

[0014] With the above structure, a metal sleeve 5 is fitted onto the inner wall of the pump body 2, and the metal sleeve 5 is further sealed by an O-ring 9. Simultaneously, the first spring 42, piston 43, and push rod 31 inside the metal sleeve 5 are all located on the central axis of the pump body 2 and are coaxially arranged. When the pump body 2 is in use, the sleeve is at the bottom of the pump body 2, and the inner wall of the metal sleeve 5 is sealed with the pump body 2 using an O-ring 9. The outer wall of the metal sleeve 5 is in close contact with and limits the inner wall of the pump body 2, which helps prevent the sleeve from becoming eccentric. At the same time, the metal sleeve 5 is embedded inside the limiting sleeve 3 at a position on the pump body 2 away from the pump port 21, making it concentric with the limiting sleeve 3, ensuring the concentricity of the metal sleeve 5 and the inner hole of the pump body 2. The overall outer shell of this product is made of plastic, meeting the requirements of lightweight and low cost. The guide part of the piston 43 uses the metal sleeve 5, which has excellent pressure resistance and wear resistance; it has the advantages of combining lightweight and pressure resistance and wear resistance.

[0015] like Figure 1 As shown, a dust cover 6 is installed on the end of the pump body 2 away from the pump port 21, and the push rod 31 passes through the dust cover 6 and is inserted into the pump body 2.

[0016] The above structure, with the dust cover 6 installed, provides a good dust protection effect.

[0017] like Figure 1 As shown, a leather cup 7 is also fitted between the piston 43 and the metal sleeve 5. The leather cup 7 further enhances the sealing effect by being provided between the piston 43 and the metal sleeve 5.

[0018] like Figure 1 As shown, the pump body 2 has a limiting block 81 on the inner wall of the end away from the pump port 21, and a retaining ring 82 is installed on the limiting block 81. By setting the retaining ring 82, it is beneficial to prevent the dust cover 6 from entering the pump body 2 along with the push rod 31 when the push rod 31 moves to the left, thus playing a good blocking role.

[0019] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A wear-resistant insert-type clutch slave pump, comprising a pump body (2), characterized in that, The pump body (2) has a pump port (21), and a limit sleeve (3) is installed at the end of the pump body (2) away from the pump port (21). Inside the pump body (2), from the point near the pump outlet to the point away from the pump outlet (21), a spring seat (41), a first spring (42), and a piston (43) are installed in sequence. The spring seat (41) is installed inside the pump body (2) near the pump outlet. One end of the first spring (42) is fixedly connected to the spring seat (41), and the other end is fixedly connected to the piston (43). The limiting sleeve (3) has a push rod (31) on the side near the pump body (2) for pushing the piston to move to the left or right. The rod end of the push rod (31) is connected to the piston (43). The piston (43) is connected to a first spring (42) at one end near the pump port (21) and to the push rod (31) at the other end near the limiting sleeve (3). The first spring (42), the piston (43), and the push rod (31) are all located on the central axis of the pump body (2) and are coaxially arranged; A metal sleeve (5) for sealing is fitted on the inner side wall of the pump body (2).

2. The wear-resistant insert-type clutch slave pump according to claim 1, characterized in that, A dust cover (6) is installed on the end of the pump body (2) away from the pump port (21), and the push rod (31) passes through the dust cover (6) and is inserted into the pump body (2).

3. The wear-resistant insert-type clutch slave pump according to claim 1, characterized in that, A leather cup (7) is also fitted between the piston (43) and the metal bushing (5).

4. The wear-resistant insert-type clutch slave pump according to claim 1, characterized in that, The pump body (2) has a limiting block (81) on the inner wall of the end away from the pump port (21), and a retaining ring (82) is installed on the limiting block (81).

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