High-precision airtightness detection device for automobile parts

Abstract

The utility model discloses a high-precision air tightness detection device for automobile parts, which comprises an air tightness detection main machine body, the upper end of the air tightness detection main machine body is provided with a vacuum sealing barrel, the device detects the air tightness of the automobile parts, a threaded barrel is rotated according to the size of the automobile parts, and the air tightness of the automobile parts is detected. After a fixing plate is adjusted to a proper height, an automobile part is placed in the middle of the interior of a vacuum sealing barrel, the upper end of the vacuum sealing barrel is covered with a vacuum barrel cover, the automobile part is guided to enter the inner side of a net-shaped plate, the net-shaped plate is extruded to move, and during moving, a fixing block moves along a limiting rod; and meanwhile, the movement of the fixed block releases the elastic force to the stainless steel, and the stainless steel spring releases the elastic force to enable the net-shaped plate to be attached to the outer wall position of the automobile part, so that the stability of the net-shaped plate can be kept, displacement caused by pressure change is avoided, and the accuracy of the air tightness test is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-precision airtightness testing devices for automotive parts, specifically relating to a high-precision airtightness testing device for automotive parts. Background Technology

[0002] A high-precision airtightness testing device for automotive parts is a specialized instrument for testing the airtightness of automotive components. It accurately measures the gas leakage rate of components under specific pressure conditions. This device typically employs advanced sensors and data processing technology to ensure the accuracy and reliability of the test results. By testing the airtightness of components, malfunctions caused by insufficient airtightness can be effectively prevented, improving the safety and performance of automobiles. This device is widely used in automotive manufacturing, repair, and quality control.

[0003] When using a high-precision airtightness testing device for automotive parts, the parts are placed inside a vacuum-sealed container. As the pressure changes, the parts will shift in position, which will affect the accuracy of the airtightness test. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision airtightness testing device for automotive parts, in order to solve the problem mentioned in the background art that when the high-precision airtightness testing device for automotive parts is used, the parts will shift in position as the pressure changes, and the position shift of the parts will affect the accuracy of the airtightness test.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision airtightness testing device for automotive parts, comprising an airtightness testing main body, a vacuum sealing barrel installed at the upper end of the airtightness testing main body, a vacuum barrel cover installed at the upper end of the vacuum sealing barrel, wherein when the vacuum barrel cover is installed with the vacuum sealing barrel, a rubber plug at the lower end of the vacuum barrel cover is inserted into the inner wall of the vacuum sealing barrel, a bolt post is fixed at the lower end of the rubber plug, a threaded cylinder is sleeved on the outer side of the bolt post, the threaded cylinder is fixed to a rotating shaft, and a fixing plate is installed at the lower end of the threaded cylinder;

[0006] The lower end of the fixing plate has sliding grooves on the left and right sides. A limit rod is fixed on the inner side of the sliding groove, and a fixing block is sleeved on the outer side of the limit rod. A stainless steel spring is fixed at one end of the fixing block, a mesh plate is fixed at the lower end of the fixing block, and an arc plate is fixed at the lower end of the mesh plate. The lower end of the airtightness testing main body has spherical shafts sleeved at the four corners. A base is fixed at the lower end of the spherical shaft, and a base plate is installed at the lower end of the base. Stainless steel bolts are fixed at the upper end of the base plate and are also sleeved inside the base.

[0007] Preferably, the vacuum barrel lid is controlled by a handle at the upper end to install and remove the vacuum barrel lid from the vacuum sealing barrel. A sealing gasket is fitted on the outer side of the rubber stopper, and the vacuum barrel lid is installed so that the sealing gasket is tightly attached to the upper end of the vacuum sealing barrel.

[0008] Preferably, the vacuum barrel lid extracts air from the inside of the vacuum sealing barrel through an air inlet located on the upper right side. The air inlet is connected to a vacuum pump to extract air from the inside of the vacuum sealing barrel, thus achieving a vacuum state.

[0009] Preferably, the airtightness testing main body monitors the pressure change inside the vacuum sealing barrel using a pressure gauge located on the right side of the front end, and a nameplate is provided on the left side of the front end of the airtightness testing main body.

[0010] Preferably, the threaded cylinder can change the height of the fixing plate by rotating along the outer wall of the bolt column. The threaded cylinder rotates around the rotating shaft as the center axis, and the threaded cylinder is installed with the fixing plate through the rotating shaft.

[0011] Preferably, when the mesh plate is compressed, the fixing block moves along the limiting rod, and the movement of the fixing block compresses the stainless steel bolt. The left and right ends of the stainless steel bolt are respectively fixed to the fixing block and the inner wall of the slide groove.

[0012] Preferably, the base is mounted below the airtightness testing main body via a spherical shaft. The base can swing 360 degrees around the spherical shaft as its central axis, and a threaded hole is provided inside the base.

[0013] Preferably, the stainless steel bolt is fitted into the threaded hole of the base, and the rotation of the base plate causes the stainless steel bolt to rotate inside the threaded hole.

[0014] Compared with the prior art, this utility model provides a high-precision airtightness testing device for automotive parts, which has the following advantages:

[0015] 1. This device is used to test the airtightness of automotive parts. After adjusting the fixing plate to a suitable height by rotating the threaded cylinder according to the size of the automotive part, the automotive part is placed in the middle position inside the vacuum sealing barrel. The vacuum barrel lid is placed on the top position of the vacuum sealing barrel. When the arc-shaped plate contacts the automotive part, it guides it into the inner position of the mesh plate. The mesh plate is compressed and moves, causing the fixing block to move along the limiting rod. Simultaneously, the movement of the fixing block releases elastic force on the stainless steel spring, which in turn releases elastic force, causing the mesh plate to adhere to the outer wall of the automotive part. This maintains stability and avoids displacement due to pressure changes, thereby improving the accuracy of the airtightness test.

[0016] 2. The fixture of this device uses two mesh plates to fix the position of the automotive parts. The mesh structure allows gas to flow freely during the test, reducing the gas retention between the fixture and the parts and ensuring the accuracy of the airtightness test.

[0017] 3. The base can swing at any angle via a spherical shaft. When the air tightness testing unit is placed on an uneven table or ground, swing the base toward the lower side and rotate the base plate so that it extends downwards via stainless steel bolts until it touches the ground on the lower side. This adjustment method allows the air tightness testing unit to be placed stably for operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a high-precision airtightness testing device for automotive parts according to the present invention.

[0019] Figure 2 This is a schematic diagram of the vacuum barrel cover structure of a high-precision airtightness testing device for automotive parts according to this utility model.

[0020] Figure 3 This is a cross-sectional structural diagram of the fixing plate of a high-precision airtightness testing device for automotive parts according to the present invention.

[0021] Figure 4 This is a schematic cross-sectional view of the base of a high-precision airtightness testing device for automotive parts according to the present invention.

[0022] In the diagram: 1. Air tightness testing main body; 2. Nameplate; 3. Base plate; 4. Base; 5. Pressure gauge; 6. Vacuum sealing barrel; 7. Air inlet; 8. Handle; 9. Vacuum barrel lid; 10. Sealing gasket; 11. Bolt post; 12. Fixing plate; 13. Arc plate; 14. Mesh plate; 15. Threaded cylinder; 16. Rubber plug; 17. Fixing block; 18. Slide groove; 19. Stainless steel spring; 20. Limiting rod; 21. Spherical shaft; 22. Stainless steel bolt; 23. Rotating shaft. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] The utility model provides, for example Figure 1-4 The high-precision airtightness testing device for automotive parts shown includes an airtightness testing main body 1. A vacuum sealing barrel 6 is installed at the upper end of the airtightness testing main body 1, and a vacuum barrel cover 9 is installed at the upper end of the vacuum sealing barrel 6. When installing the vacuum barrel cover 9 with the vacuum sealing barrel 6, a rubber plug 16 at the lower end of the vacuum barrel cover 9 is inserted into the inner wall of the vacuum sealing barrel 6. A bolt post 11 is fixed at the lower end of the rubber plug 16, and a threaded cylinder 15 is sleeved on the outer side of the bolt post 11. The threaded cylinder 15 is fixed to a rotating shaft 23. A fixing plate 12 is installed at the lower end of the threaded cylinder 15. The lower end of the fixing plate 12 is... A sliding groove 18 is provided on the left and right sides. A limit rod 20 is fixed on the inner side of the sliding groove 18. A fixing block 17 is sleeved on the outer side of the limit rod 20. A stainless steel spring 19 is fixed at one end of the fixing block 17. A mesh plate 14 is fixed at the lower end of the fixing block 17. An arc plate 13 is fixed at the lower end of the mesh plate 14. A spherical shaft 21 is sleeved at the four corners of the lower end of the airtightness testing main body 1. A base 4 is fixed at the lower end of the spherical shaft 21. A base plate 3 is installed at the lower end of the base 4. Stainless steel bolts 22 are fixed at the upper end of the base plate 3 and are sleeved inside the base 4.

[0025] Open the vacuum chamber lid 9 and place the automotive parts to be tested inside the vacuum sealing chamber 6. Close the vacuum chamber lid 9 tightly and connect the air inlet 7 to the vacuum pump via the connecting pipe. Start the vacuum pump to extract the air from inside the vacuum sealing chamber 6. The pressure inside the vacuum sealing chamber 6 will gradually decrease until the set vacuum level is reached. Under vacuum conditions, observe the reading on the pressure gauge 5 and record the initial vacuum level. If the automotive parts being tested have a leak, the pressure inside the vacuum sealing chamber 6 will gradually increase, and the pressure gauge 5 will show a change. This is how to determine whether the automotive parts meet the airtightness standards.

[0026] like Figure 1 and Figure 2As shown, the vacuum barrel cover 9 is controlled by the handle 8 at the upper end to install and remove the vacuum barrel cover 9 from the vacuum sealing barrel 6. A sealing gasket 10 is fitted on the outer side of the rubber stopper 16. When the vacuum barrel cover 9 is installed, the sealing gasket 10 is tightly attached to the upper end of the vacuum sealing barrel 6. The vacuum barrel cover 9 draws air from the inside of the vacuum sealing barrel 6 through the air inlet 7 at the upper right end. The air inlet 7 is connected to a vacuum pump to draw air from the inside of the vacuum sealing barrel 6 to achieve a vacuum state. The air tightness detection main body 1 monitors the pressure change inside the vacuum sealing barrel 6 through the pressure gauge 5 at the front right end. A nameplate 2 is set at the front left end of the air tightness detection main body 1.

[0027] When the vacuum barrel lid 9 is placed on the upper part of the vacuum sealing barrel 6, the sealing gasket 10 and the rubber stopper 16 increase the sealing performance, ensuring that the inside of the vacuum sealing barrel 6 is kept in a vacuum state and preventing external air from entering. When the air in the vacuum sealing barrel 6 is evacuated, the pressure gauge 5 displays the initial vacuum level. During the test, the staff observes the pressure change of the pressure gauge 5 to judge the airtightness of the components.

[0028] like Figure 2 and Figure 3 As shown, the threaded cylinder 15 can change the height of the fixing plate 12 by rotating along the outer wall of the bolt post 11. When rotating, the threaded cylinder 15 rotates around the rotating shaft 23 as the center axis. The threaded cylinder 15 is installed with the fixing plate 12 through the rotating shaft 23. When the mesh plate 14 is squeezed, the fixing block 17 moves along the limiting rod 20. The movement of the fixing block 17 squeezes the stainless steel bolt 22. The left and right ends of the stainless steel bolt 22 are fixed to the fixing block 17 and the inner wall of the slide groove 18, respectively.

[0029] Rotate the threaded cylinder 15 according to the size of the car part, adjust the fixing plate 12 to a suitable height, and place the car part in the middle position inside the vacuum sealing barrel 6. Cover the upper position of the vacuum sealing barrel 6 with the vacuum barrel cover 9. When the arc plate 13 contacts the car part, it guides it into the inner position of the mesh plate 14. The mesh plate 14 is squeezed and moves. During the movement, the fixing block 17 moves along the limit rod 20. At the same time, the movement of the fixing block 17 releases the elastic force of the stainless steel. The stainless steel spring 19 releases the elastic force, so that the mesh plate 14 is attached to the outer wall of the car part, thus maintaining its stability.

[0030] like Figure 1 and Figure 4As shown, the base 4 is installed below the airtightness testing main body 1 via a spherical shaft 21. The base 4 can swing 360 degrees around the spherical shaft 21. A threaded hole is provided inside the base 4, and a stainless steel bolt 22 is fitted into the threaded hole of the base 4. The rotation of the base plate 3 causes the stainless steel bolt 22 to rotate inside the threaded hole.

[0031] The base 4 can swing at any angle via the spherical shaft 21. When the air tightness testing main body 1 is placed on an uneven table or ground, the swing base 4 is tilted toward the low side, and the base plate 3 is rotated to extend downwards via the stainless steel bolt 22 until it touches the ground on the low side. This adjustment allows the air tightness testing main body 1 to be placed stably for operation.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-precision airtightness testing device for automotive parts, characterized in that, The device includes an airtightness testing main body (1), a vacuum sealing barrel (6) is installed at the upper end of the airtightness testing main body (1), a vacuum barrel cover (9) is installed at the upper end of the vacuum sealing barrel (6), when the vacuum barrel cover (9) is installed with the vacuum sealing barrel (6), a rubber plug (16) at the lower end of the vacuum barrel cover (9) is inserted into the inner wall of the vacuum sealing barrel (6), a bolt post (11) is fixed at the lower end of the rubber plug (16), a threaded cylinder (15) is sleeved on the outer side of the bolt post (11), the threaded cylinder (15) is fixed to the rotating shaft (23), and a fixing plate (12) is installed at the lower end of the threaded cylinder (15); The lower end of the fixed plate (12) is provided with a sliding groove (18) on the left and right sides. A limit rod (20) is fixed on the inner side of the sliding groove (18). A fixed block (17) is sleeved on the outer side of the limit rod (20). A stainless steel spring (19) is fixed at one end of the fixed block (17). A mesh plate (14) is fixed at the lower end of the fixed block (17). An arc plate (13) is fixed at the lower end of the mesh plate (14). A spherical shaft (21) is sleeved at the four corners of the lower end of the airtightness detection main body (1). A base (4) is fixed at the lower end of the spherical shaft (21). A base plate (3) is installed at the lower end of the base (4). A stainless steel bolt (22) is fixed at the upper end of the base plate (3) and sleeved on the inner side of the base (4).

2. The high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: The vacuum barrel cover (9) is controlled by the handle (8) at the upper end to install and remove the vacuum barrel cover (9) from the vacuum sealing barrel (6). A sealing gasket (10) is fitted on the outer side of the rubber stopper (16). When the vacuum barrel cover (9) is installed, the sealing gasket (10) is tightly attached to the upper end of the vacuum sealing barrel (6).

3. The high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: The vacuum barrel cover (9) extracts air from the inside of the vacuum sealing barrel (6) through the air inlet (7) located on the upper right side. The air inlet (7) is connected to a vacuum pump to extract air from the inside of the vacuum sealing barrel (6) to make it reach a vacuum state.

4. The high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: The airtightness testing main body (1) monitors the pressure change inside the vacuum sealing barrel (6) by means of a pressure gauge (5) located on the right side of the front end. A nameplate (2) is provided on the left side of the front end of the airtightness testing main body (1).

5. A high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: The threaded cylinder (15) can change the height of the fixing plate (12) by rotating along the outer wall of the bolt post (11). The threaded cylinder (15) rotates around the rotating shaft (23) as the center axis. The threaded cylinder (15) is installed with the fixing plate (12) through the rotating shaft (23).

6. The high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: When the mesh plate (14) is squeezed, the fixing block (17) moves along the limiting rod (20). The movement of the fixing block (17) squeezes the stainless steel bolt (22). The left and right ends of the stainless steel bolt (22) are fixed to the inner walls of the fixing block (17) and the slide (18), respectively.

7. A high-precision airtightness testing device for automotive parts according to claim 1, characterized in that: The base (4) is installed below the airtightness testing host body (1) via a spherical shaft (21). The base (4) can swing 360 degrees around the spherical shaft (21) as the center axis. A threaded hole is provided inside the base (4).

8. A high-precision airtightness testing device for automotive parts according to claim 7, characterized in that: The stainless steel bolt (22) is fitted into the threaded hole of the base (4), and the rotation of the base plate (3) causes the stainless steel bolt (22) to rotate at the internal position of the threaded hole.

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