Fixing tool for durability test of brake master cylinder

Abstract

The utility model discloses a fixing tool for durability test of a brake master cylinder, which comprises a fixing bottom plate, a first bushing and a second bushing are fixed on the fixing bottom plate, the first bushing is fixed on the fixing bottom plate through a first bracket, and the second bushing is fixed on the fixing bottom plate through a second bracket; a first rotating shaft is arranged on one side of the lower end of the mounting plate, a second rotating shaft is arranged on the other side of the lower end of the mounting plate, the first rotating shaft is located in the first lining, and the second rotating shaft is located in the second lining; a first fixing plate and a second fixing plate are further fixed to the fixing bottom plate, the first fixing plate and the second fixing plate are the same in structure, the first fixing plate is located on one side of the mounting plate, and the second fixing plate is located on the other side of the mounting plate. The working state of the brake master cylinder can be simulated, and conditions are provided for detecting the service life of the brake master cylinder.

Description

Technical Field

[0001] This utility model relates to a fixture for durability testing of brake master cylinders, belonging to the field of brake master cylinders. Background Technology

[0002] The master cylinder is a core component of a car's braking system. Its main function is to convert the mechanical energy generated by the driver pressing the brake pedal into hydraulic energy, thereby driving the wheel brakes to decelerate and stop the vehicle. The performance and condition of the master cylinder directly affect the reliability and safety of the braking system.

[0003] The brake master cylinder is installed on a car. During the car's operation, there are bumps and vibrations. The bumpy working conditions will affect the service life of the brake master cylinder. In order to simulate the working conditions of the brake master cylinder, there are now durability testing devices. However, durability testing devices generally only provide a vibrating environment, which is quite different from the actual working conditions of the brake master cylinder and cannot accurately detect the service life of the brake master cylinder. Utility Model Content

[0004] The purpose of this invention is to provide a fixture for durability testing of the brake master cylinder, which can simulate the working state of the brake master cylinder and provide conditions for testing the service life of the brake master cylinder.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A fixture for durability testing of a brake master cylinder includes a base plate, on which a first bushing and a second bushing are fixed. The first bushing is fixed to the base plate via a first bracket, and the second bushing is fixed to the base plate via a second bracket. It also includes a mounting plate with a first pivot on one side of its lower end and a second pivot on the other side of its lower end. The first pivot is located inside the first bushing, and the second pivot is located inside the second bushing. The base plate also has a first fixing plate and a second fixing plate with identical structures. The first fixing plate is located on one side of the mounting plate, and the second fixing plate is located on the other side. The first fixing plate has a limiting groove, within which a first fixing screw is located. The width of the limiting groove is equal to the diameter of the first fixing screw's shaft, and the threaded section of the first fixing screw is located within a threaded hole in the mounting plate.

[0007] In the aforementioned fixture for durability testing of brake master cylinder, both the first bracket and the second bracket are fixed to the base plate by the second fixing screw. The first base plate has a through groove, the first bracket is located in the through groove, and the top of the through groove abuts against the top of the first bracket.

[0008] In the aforementioned fixture for durability testing of brake master cylinder, the edge of the limiting groove has several positioning grooves, the first fixing screw passes through the positioning ring, the positioning ring has a positioning block, and the positioning block is located in the positioning groove.

[0009] In the aforementioned fixture for durability testing of the brake master cylinder, the mounting plate has mounting holes for mounting the brake master cylinder.

[0010] Compared with the prior art, this invention can simulate the working state of the brake master cylinder, providing conditions for testing the service life of the brake master cylinder. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0012] Reference numerals: 1-Fixed base plate, 2-First fixed plate, 3-First rotating shaft, 4-First bushing, 5-First bracket, 6-First fixing screw, 7-Second fixing screw, 8-Mounting plate, 9-Limiting groove, 10-Positioning groove, 11-Second bushing, 12-Second rotating shaft, 13-Second bracket, 14-Second fixed plate.

[0013] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Detailed Implementation

[0014] Embodiment 1 of this utility model: A fixing fixture for durability testing of a brake master cylinder includes a fixing base plate 1, on which a first bushing 4 and a second bushing 11 are fixed. The first bushing 4 is fixed to the fixing base plate 1 by a first bracket 5, and the second bushing 11 is fixed to the fixing base plate 1 by a second bracket 13. It also includes a mounting plate 8, with a first rotating shaft 3 on one side of its lower end and a second rotating shaft 12 on the other side of its lower end. The first rotating shaft 3 is located inside the first bushing 4, and the second rotating shaft 12 is located inside the second bushing 11. A first fixing plate 2 and a second fixing plate 14 are also fixed to the fixing base plate 1. The first fixing plate 2 and the second fixing plate 14 have the same structure. The first fixing plate 2 is located on one side of the mounting plate 8, and the second fixing plate 14 is located on the other side of the mounting plate 8. The first fixing plate 2 has a limiting groove 9, and a first fixing screw 6 is located within the limiting groove 9. The width of the limiting groove 9 is equal to the diameter of the shaft of the first fixing screw 6, and the threaded section of the first fixing screw 6 is located within the threaded hole of the mounting plate 8.

[0015] Example 2: A fixture for durability testing of a brake master cylinder includes a fixed base plate 1, on which a first bushing 4 and a second bushing 11 are fixed. The first bushing 4 is fixed to the fixed base plate 1 by a first bracket 5, and the second bushing 11 is fixed to the fixed base plate 1 by a second bracket 13. It also includes a mounting plate 8, with a first rotating shaft 3 on one side of its lower end and a second rotating shaft 12 on the other side. The first rotating shaft 3 is located inside the first bushing 4, and the second rotating shaft 12 is located inside the second bushing 11. A first fixing plate 2 and a second fixing plate 14 are also fixed to the fixed base plate 1. The first fixing plate 2 and the second fixing plate 14 have the same structure. The first fixing plate 2 is located on one side of the mounting plate 8, and the second fixing plate 14 is located on the other side of the mounting plate 8. The first fixing plate 2 has a limiting groove 9, and a first fixing screw 6 is located within the limiting groove 9. The width of the limiting groove 9 is equal to the diameter of the shaft of the first fixing screw 6, and the threaded section of the first fixing screw 6 is located within the threaded hole of the mounting plate 8.

[0016] The first bracket 5 and the second bracket 13 are both fixed to the base plate 1 by the second fixing screw 7. The first fixing plate 2 has a through groove, and the first bracket 5 is located in the through groove, with the top of the through groove abutting the top of the first bracket 5. The edge of the limiting groove 9 has several positioning grooves 10. The first fixing screw 6 passes through the positioning ring, and the positioning ring has a positioning block, which is located in the positioning groove 10. The mounting plate 8 has mounting holes for mounting the brake master cylinder.

[0017] The working principle of one embodiment of this utility model is as follows: The fixed base plate 1 is the base of the entire fixture. It is connected to the vibration durability test bench through positioning holes. The function of the first fixed plate 2 is to press down the first clamping bushing 4 and the first bracket 5, thereby pressing down the first rotating shaft 3 encased inside. Because the test bench will vibrate violently during the vibration durability test, wrapping the first bushing 4 around the first rotating shaft 3 can effectively prevent hard-contact vibration between the test bench and the fixture, thus accurately simulating the usage conditions of the product on the vehicle. The function of the first bracket 5 is to fix the first bushing 4 to prevent displacement. M10 fastening screws fix the first fixed plate 2 and the mounting plate 8 to determine the test angle. M8 fastening screws fix the first bracket 5 to the fixed base plate 1 to ensure that the entire fixture will not move.

[0018] We can pass the screws on the back cover of the product through the four positioning holes on the mounting plate 8 and then tighten them with nuts to ensure that the product is fixed on the mounting plate for testing. In order to meet the testing needs of more products, the four positioning holes on the mounting plate 8 are designed as strip holes, which can accommodate both 80x60 size boosters and 72x72 size products for testing, thus achieving the ability to use a variety of products.

Claims

1. A fixture for durability testing of a brake master cylinder, characterized in that, Includes a fixed base plate (1), on which a first bushing (4) and a second bushing (11) are fixed. The first bushing (4) is fixed to the fixed base plate (1) by a first bracket (5), and the second bushing (11) is fixed to the fixed base plate (1) by a second bracket (13). It also includes a mounting plate (8), with a first pivot (3) on one side of the lower end of the mounting plate (8) and a second pivot (12) on the other side of the lower end of the mounting plate (8). The first pivot (3) is located inside the first bushing (4), and the second pivot (12) is located inside the second bushing (11). A first fixing plate (2) and a second fixing plate (14) are also fixed on the base plate (1). The first fixing plate (2) and the second fixing plate (14) have the same structure. The first fixing plate (2) is located on one side of the mounting plate (8), and the second fixing plate (14) is located on the other side of the mounting plate (8). The first fixing plate (2) has a limiting groove (9), and the limiting groove (9) has a first fixing screw (6). The width of the limiting groove (9) is equal to the diameter of the shaft of the first fixing screw (6), and the threaded section of the first fixing screw (6) is located in the threaded hole of the mounting plate (8).

2. The fixture for durability testing of a brake master cylinder according to claim 1, characterized in that, The first bracket (5) and the second bracket (13) are both fixed to the fixed base plate (1) by the second fixing screw (7). The first fixing plate (2) has a through groove, the first bracket (5) is located in the through groove, and the top of the through groove abuts against the top of the first bracket (5).

3. The fixture for durability testing of a brake master cylinder according to claim 1, characterized in that, The edge of the limiting groove (9) has several positioning grooves (10), the first fixing screw (6) passes through the positioning ring, the positioning ring has a positioning block, and the positioning block is located in the positioning groove (10).

4. The fixture for durability testing of a brake master cylinder according to claim 1, characterized in that, The mounting plate (8) has mounting holes for mounting the brake master cylinder.

Images