Tool for testing sealing performance of star-shaped ring

Abstract

The utility model relates to a tool for testing the sealing performance of a star-shaped ring, and belongs to a testing device of a sealing element for an automobile braking system. The adjusting screw is in threaded connection with the body, the front end of the adjusting screw abuts against the outer end of the sleeve, the inner end of the sleeve is used for pressing the star-shaped ring, the sliding shaft is inserted into the body, the front end of the sliding shaft is in sliding connection with the interior of the sleeve, the body is provided with a liquid inlet, and the front end of the liquid inlet is located outside the sleeve. The device has the advantages that the structure is novel, the problem that the star-shaped ring cannot be replaced when the sealing performance of the star-shaped ring is verified on the ABS system valve body is solved, the star-shaped ring is fixed at the front end of the sleeve, and the screwing depth of the rear screw is adjusted, so that the groove width of the star-shaped ring is changed, and the static sealing and the dynamic sealing of the star-shaped ring under different groove widths are verified; a designer can be helped to determine the effective groove width of the product, the product design is further optimized, and the product reliability and the product research and development efficiency are improved.

Description

Technical Field

[0001] This utility model relates to a testing device for seals used in automotive braking systems, and more particularly to a testing fixture for the sealing performance of a star-shaped ring. Background Technology

[0002] In ABS systems, plunger pumps are typically used to improve the efficiency and response of the braking system. The star-shaped rings within the pump ensure its seal, preventing fluid leakage and maintaining system pressure. Reliable sealing performance is crucial in ABS systems, directly impacting braking performance and safety.

[0003] Currently, in the development of new products related to ABS systems, when the star ring is selected and its sealing performance needs to be verified, it is generally installed directly into the ABS system assembly for testing. When the star ring has a sealing problem and needs to be replaced, the piston pump is riveted into the valve body in the ABS system prototype, making it impossible to remove the star ring. It can only be installed into a new ABS valve body for retesting, which is very inconvenient and directly leads to increased development costs and reduced development efficiency. Summary of the Invention

[0004] This invention provides a testing fixture for the sealing performance of star-shaped rings, which solves the problems of inconvenience in replacing star-shaped rings, increased development costs, and reduced development efficiency caused by directly installing them into the ABS system assembly for testing.

[0005] The technical solution adopted by this utility model is as follows: it includes a liquid inlet, an adjusting screw, a sleeve, a body, a sliding shaft, and an observation port. The observation port is located in the middle of the body. The sleeve is located inside the body. The adjusting screw is threadedly connected to the body, and its front end is abutted against the outer end of the sleeve. The inner end of the sleeve is used to press the star-shaped ring. The sliding shaft is inserted into the body, and its front end is slidably connected to the inside of the sleeve. The body has a liquid inlet, and the front end of the liquid inlet is located outside the sleeve.

[0006] There is a sealing washer between the adjusting screw and the body.

[0007] The body has a sliding shaft mounting protection groove on its side.

[0008] The rear end of the sliding shaft is connected to an externally fixed eccentric shaft of the motor.

[0009] A return spring is sleeved on the sliding shaft.

[0010] The advantages of this utility model are its novel structure, which solves the problem of not being able to replace the star ring when verifying the sealing performance of the star ring on the valve body of an ABS system. By fixing the star ring with the front end of the sleeve and adjusting the screw depth at the rear, the width of the star ring groove can be changed to verify the static and dynamic sealing of the star ring under different groove widths. This helps designers determine the effective groove width of the product, further optimize the product design, and improve the reliability of the product. This utility model is easy to process, has strong versatility, effectively shortens the product development cycle, thereby saving development costs and improving product R&D efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 yes Figure 1 Enlarged view of part A;

[0013] Figure 3 This is an isometric drawing of this utility model. Detailed Implementation

[0014] See Figure 1 , 2 3. It includes an inlet 1, an adjusting screw 2, a sleeve 4, a body 5, a sliding shaft 6, and an observation port 8. The observation port 8 is located in the middle of the body 5. The sleeve 4 is located inside the body 5. The adjusting screw 2 is threaded to the body 5 and its front end is in contact with the outer end of the sleeve 4. The inner end of the sleeve 4 is used to press the star ring 10. The sliding shaft 6 is inserted into the body 5 and its front end is slidably connected to the inside of the sleeve 4. The body 5 has an inlet 1, and the front end of the inlet 1 is located outside the sleeve 4.

[0015] See Figure 1 A sealing washer 3 is provided between the adjusting screw 2 and the body 5.

[0016] See Figure 1 , 3 The main body 5 has a sliding shaft 6 on its side for mounting a protective groove 9.

[0017] The rear end of the sliding shaft 6 is connected to an externally fixed eccentric shaft of the motor.

[0018] See Figure 1 A return spring 7 is sleeved on the sliding shaft 6.

[0019] Working principle

[0020] Place the star-shaped ring 10 to be tested into the body 5, then insert the sleeve 4. Connect the adjusting screw 2 through the sealing washer 3 and thread it onto the body 5. Rotate the adjusting screw 2 to tighten it against the sleeve 4, thus pressing the front end of the sleeve 4 against the star-shaped ring 10. Connect the left side of the sliding shaft 6 to the eccentric shaft of the fixed motor. Then, according to the test requirements, change the groove width of the star-shaped ring by adjusting the screw's screwing depth. Fill the system with liquid through the inlet 1. First, during static seal verification, the motor is not started, and the star-shaped ring 10, sleeve 4, sealing washer 3, and adjusting screw 2 form a seal. Check for leakage during static sealing. Next, during dynamic seal verification, the motor starts, and the sliding shaft 6 enters the sleeve 4. When the sliding shaft 6 slides out, check for oil on the sliding shaft 6 through the observation port 8 to check for leakage during dynamic sealing. In summary, the sealing performance of the star-shaped ring under different groove widths is verified by adjusting the screw 2's screwing depth.

Claims

1. A seal performance test tool for a star washer, characterized by: It includes an inlet, an adjusting screw, a sleeve, a body, a sliding shaft, and an observation port. The observation port is located in the middle of the body. The sleeve is located inside the body. The adjusting screw is threaded to the body and its front end abuts against the outer end of the sleeve. The inner end of the sleeve is used to press the star-shaped ring. The sliding shaft is inserted into the body and its front end is slidably connected to the inside of the sleeve. The body has an inlet, and the front end of the inlet is located outside the sleeve.

2. The seal performance test tooling for a star washer of claim 1, wherein: There is a sealing washer between the adjusting screw and the body.

3. The seal performance test tool for a star washer of claim 1, wherein: The body has a sliding shaft mounting protection groove on its side.

4. The seal performance test tool for a star washer of claim 1, wherein: The rear end of the sliding shaft is connected to an externally fixed eccentric shaft of the motor.

5. The seal performance test tool for a star washer of claim 1, wherein: A return spring is sleeved on the sliding shaft.

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