False shell device for vacuum booster production line performance test

Abstract

The utility model relates to a false shell device for a vacuum booster production line performance test, and belongs to a semi-finished product sealing test device in the assembly process. The first O-shaped ring is installed in an annular groove of the outer ring of the bottom end of the upper positioning body, the fake shell is fixedly connected with the outer ring of the bottom end of the upper positioning body through the hexagon socket cap screw, the return spring seat is fixedly connected with the middle of the bottom end of the upper positioning body through the hexagon socket cap screw, and the return spring is installed on the return spring seat. And the O-shaped ring II is mounted on the upper end surface of the upper positioning body. The device has the advantages that the structure is novel, the device is used for assisting in carrying out performance testing on booster semi-finished products of booster products of different structures, performance testing of the booster products of different structures can be achieved by replacing a fake shell device, the device can be suitable for performance testing of products of the same size and different heights, and the device is good in sealing performance and low in weight.

Description

Technical Field

[0001] The utility model belongs to a semi-finished product sealing test device during an assembly process, in particular to a false shell device for a vacuum booster production line performance test. Background Art

[0002] The main function of the vacuum booster assembly in the automobile braking system is to amplify the servo force through the vacuum booster through the pedal force, acting on the brake master cylinder, causing it to move forward to compress the brake fluid in the master cylinder, and then deliver hydraulic pressure to the entire vehicle's braking system through the brake master cylinder oil outlet, thereby realizing the vehicle's braking function.

[0003] During the assembly process of the vacuum booster, various performance tests are required. The vacuum booster is structurally divided into a single diaphragm structure and a double diaphragm structure. In order to be flexible when designing the assembly line, it is usually necessary to achieve co-production of two structural products. In order to control costs, semi-finished product performance tests are required during product performance tests. It is necessary to design a sealing detection device similar to the front shell component of the vacuum booster, which is used for semi-finished product sealing tests of vacuum booster products of different sizes and structures. Summary of the invention

[0004] The utility model provides a dummy shell device for testing the performance of a vacuum booster production line, so as to solve the problem that there is no dummy shell device for testing during the inspection of semi-finished vacuum boosters, resulting in failure to conduct sealing tests on the semi-finished products.

[0005] The technical solution adopted by the utility model is to include a false shell, an M8 hexagon socket cylindrical head screw, an O-ring 1, an upper positioning body, an O-ring 2, an M6 hexagon socket cylindrical head screw, a return spring seat, and a return spring, wherein the O-ring 1 is installed in the annular groove of the outer ring of the bottom end of the upper positioning body, the false shell is fixedly connected to the outer ring of the bottom end of the upper positioning body by four M8 hexagon socket cylindrical head screws, the return spring seat is fixedly connected to the middle part of the bottom end of the upper positioning body by three M6 hexagon socket cylindrical head screws, the return spring is installed on the return spring seat, and the O-ring 2 is installed on the upper end surface of the upper positioning body.

[0006] A vacuum channel is arranged in the upper positioning body.

[0007] The upper positioning body is made of aluminum, which makes the entire device lighter and more convenient for personnel to operate during replacement.

[0008] The return spring uses the return spring of the product being tested.

[0009] The advantage of the utility model is that it has a novel structure. It can be installed on a semi-finished product performance test workbench to assist in the performance test of the semi-finished booster products with different structures. The performance test of the booster products with different structures can be achieved by replacing the false shell device. Because the height difference between the two structures of single and double diaphragms is large, the height of the false shell device is relatively high. A split structure is adopted, and the upper positioning body is made of aluminum, which makes the entire device lighter and convenient for personnel to operate during replacement. If a steel structure is used, the weight will increase, and personnel operation will be risky. It can be applied to product performance testing of the same size and different heights. For products of the same size but different heights, when testing semi-finished products, it is only necessary to replace the return spring seat and the return spring to ensure that they are consistent with the product return spring. There is no need to specially make a set of false shell devices for products of the same size and different heights. It is only necessary to replace the return spring seat. The return spring can use the product. The device has good sealing and low weight. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings used in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying creative work.

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] Figure 2 It is an assembly schematic diagram of the utility model and a semi-finished booster during detection. DETAILED DESCRIPTION

[0013] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0014] like Figure 1 As shown, it includes a false shell 1, an M8 hexagon socket head screw 2, an O-ring 1 3, an upper positioning body 4, an O-ring 2 5, an M6 hexagon socket head screw 6, a return spring seat 7, and a return spring 8, wherein the O-ring 1 3 is installed in the annular groove of the outer ring of the bottom end of the upper positioning body 4, the false shell 1 is fixedly connected to the outer ring of the bottom end of the upper positioning body 4 by four M8 hexagon socket head screws 2, the return spring seat 7 is fixedly connected to the middle part of the bottom end of the upper positioning body 4 by three M6 hexagon socket head screws 6, the return spring 8 is installed on the return spring seat 7, and the O-ring 2 5 is installed on the upper end surface of the upper positioning body 4.

[0015] The upper positioning body 4 has a vacuum channel 401 therein.

[0016] The upper positioning body 4 is made of aluminum, which makes the entire device lighter and more convenient for personnel to operate during replacement.

[0017] The return spring 8 uses the return spring of the product being tested.

[0018] How it works

[0019] The utility model is installed on the performance test bench, and is tightened and fixed through the three threaded holes on the upper positioning body 4. The O-ring 25 forms a seal with the positioning end face of the test bench to prevent air leakage. The utility model is driven to move by the up and down movement of the test bench to press and seal the semi-finished product. Figure 2 As shown, after pressing, the vacuum device of the testing platform evacuates the entire sealing cavity through the vacuum channel 401 on the upper positioning body 4, and relevant sealing and performance tests are carried out after the equipment value is reached; after the test is completed, the system is exhausted to release the vacuum, and the testing platform moves up and down to reset the utility model. At the same time, the return spring 8 plays the role of returning the material to prevent the semi-finished product from being lifted up during the upward movement of the utility model. The return spring can use the product.

[0020] The upper positioning body is made of aluminum, making the entire device lighter and easier to operate during replacement. If a steel structure is used, the weight will increase and there will be risks in operating it.

[0021] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the protection scope of the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, any technician familiar with the technical field can make equivalent replacements or changes based on the technical scheme and the utility model concept of the present invention within the technical scope disclosed by the present invention. These simple variations all belong to the protection scope of the present invention.

Claims

1. A false housing device for vacuum booster production line performance testing, characterized in that: It includes a false shell, an M8 hexagon socket head screw, an O-ring 1, an upper positioning body, an O-ring 2, an M6 hexagon socket head screw, a return spring seat, and a return spring, wherein the O-ring 1 is installed in the ring groove of the outer ring of the bottom end of the upper positioning body, the false shell is fixedly connected to the outer ring of the bottom end of the upper positioning body by 4 M8 hexagon socket head screws, the return spring seat is fixedly connected to the middle part of the bottom end of the upper positioning body by 3 M6 hexagon socket head screws, the return spring is installed on the return spring seat, and the O-ring 2 is installed on the upper end surface of the upper positioning body.

2. A false housing device for vacuum booster production line performance testing according to claim 1, characterized in that: A vacuum channel is arranged in the upper positioning body.

3. A false housing device for vacuum booster production line performance testing according to claim 1 or 2, characterized in that: The upper positioning body is made of aluminum.

4. A false housing device for vacuum booster production line performance testing according to claim 1, characterized in that: The return spring uses the return spring of the product being tested.

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