Automatic air tightness testing device
By designing an automatic airtightness testing device with detachable fixtures and clamping mechanisms, the problem of insufficient compatibility of existing devices was solved, and efficient airtightness testing of different millimeter-wave radars was achieved.
Patent Information
- Application Number
- CN202422107018.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-29
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-08-29
AI Technical Summary
Existing airtightness testing devices are incompatible with various millimeter-wave radars, resulting in low testing efficiency.
An automatic air tightness testing device was designed. It uses detachable first and second fixtures, each with a cavity and a clamping surface, to flexibly replace the fixtures to adapt to different products. It combines a clamping mechanism and an air inlet to achieve air tightness testing.
This improved the compatibility and efficiency of the detection device, ensuring the airtightness detection effect of different millimeter-wave radars.
Smart Images
Figure CN223623789U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sealing test technology, and in particular to an automatic airtightness testing device. Background Technology
[0002] Millimeter-wave radar is a detection and ranging system installed on vehicles. Its main function is to measure the three-dimensional structure of the surrounding environment by emitting millimeter-wave frequency pulses and receiving the reflected light signals. Millimeter-wave radar contains sophisticated optical and electronic components that are highly sensitive to environmental factors such as temperature and humidity. Airtightness testing ensures the stability of the internal environment of the millimeter-wave radar, preventing the ingress of external moisture and dust, thus guaranteeing its stable performance and long-term reliability. Therefore, millimeter-wave radar requires airtightness testing after assembly. However, existing airtightness testing devices are not compatible with multiple millimeter-wave radar systems, resulting in relatively low efficiency. Utility Model Content
[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problem of insufficient compatibility of the existing detection devices, which leads to low working efficiency, and to provide an automatic airtightness testing device that can replace different fixtures according to different product designs, thereby improving the compatibility of the device.
[0004] To solve the above-mentioned technical problems, this utility model provides an automatic airtightness testing device, comprising,
[0005] Base;
[0006] A first fixture is detachably connected to the base, and the first fixture is provided with a first pressing surface and a first cavity.
[0007] The second fixture is detachably connected to the base. The second fixture has a second pressing surface and a second cavity. The first cavity is positioned opposite the second cavity. The first fixture and the second fixture are configured to move closer to or further away from each other. When the first fixture and the second fixture move closer to each other, the first pressing surface is pressed against the second pressing surface, and the first cavity and the second cavity form a closed detection cavity.
[0008] The first fixture or the second fixture is provided with an air inlet, which is connected to the closed detection cavity, and a test gas source is introduced into the closed detection cavity through the air inlet.
[0009] In one embodiment of the present invention, a clamping mechanism is further provided on the base. The clamping mechanism includes a first mounting seat and a cylinder provided on the first mounting seat. The piston rod of the cylinder is connected to the first fixture. The cylinder drives the first fixture to move closer to or away from the second fixture in a horizontal or vertical direction.
[0010] In one embodiment of the present invention, a clamping mechanism is further provided at the end of the piston rod, the clamping mechanism clamps the first fixture, and the piston rod is fixedly connected to the first fixture through the clamping mechanism.
[0011] In one embodiment of this utility model, the first pressing surface and the second pressing surface are arranged in parallel and are both perpendicular to the extension direction of the piston rod.
[0012] In one embodiment of this utility model, the clamping mechanism is provided with a guide rod parallel to the piston rod, and the first mounting base is provided with a guide hole, through which the guide rod passes.
[0013] In one embodiment of the present invention, the base is provided with a second mounting seat, the side of the second mounting seat is provided with a plunger, and the second fixture is provided with a limiting hole. When the second fixture is placed on the second mounting seat, the telescopic head of the plunger is inserted into the limiting hole to fix the second fixture.
[0014] In one embodiment of this utility model, a spiral hose is further included, one end of which is connected to the air inlet and the other end of which is connected to a leak tester, the leak tester providing the test air source.
[0015] In one embodiment of this utility model, the base is provided with a pressure sensor, which is used to detect the pressure between the first fixture and the second fixture.
[0016] In one embodiment of this utility model, the first pressing surface or the second pressing surface is provided with an elastic sealing gasket.
[0017] In one embodiment of this utility model, the first fixture is disposed directly above the second fixture.
[0018] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:
[0019] The automatic airtightness testing device of this utility model has a first fixture and a second fixture respectively provided with a first cavity and a second cavity. The product to be tested is placed in the first cavity and the second cavity to form a closed testing cavity. The airtightness is tested by detecting the air pressure difference in the closed testing cavity. The first fixture and the second fixture can be detachably connected to the base, and different fixtures can be flexibly replaced according to different products, which improves the compatibility of the testing device. When the first fixture and the second fixture are closed, the first pressing surface is in contact with the second pressing surface, which ensures the sealing between the first fixture and the second fixture during the test. Attached Figure Description
[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0021] Figure 1 This is a schematic diagram of the structure of the automatic airtightness testing device in a preferred embodiment of the present invention.
[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the second fixture of the automatic airtightness testing device shown.
[0023] Figure 3 for Figure 1 A schematic diagram of the structure of the first fixture of the automatic airtightness testing device shown.
[0024] Figure 4 for Figure 1 The diagram shows the structure of the first mounting base of the automatic airtightness testing device.
[0025] Figure 5 for Figure 1 The diagram shows the structure of the plunger in the automatic airtightness testing device.
[0026] Explanation of reference numerals in the accompanying drawings: 1. Base; 11. First mounting seat; 111. Guide hole; 12. Second mounting seat; 13. Plunger; 131. Telescopic head; 132. Handle; 2. Second fixture; 21. Second cavity; 22. Second pressing surface; 23. Limiting hole; 3. First fixture; 31. Air inlet; 32. First cavity; 33. First pressing surface; 4. Clamping mechanism; 41. Guide rod; 42. Vent hole; 5. Cylinder; 51. Piston rod; 6. Pressure sensor; 7. Spiral hose. Detailed Implementation
[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0028] Example
[0029] Reference Figure 1 , 2 As shown in Figure 3, in one embodiment of this utility model, an automatic airtightness testing device includes,
[0030] The base 1 includes a base plate and a bracket mounted on the base plate;
[0031] The first fixture 3 is detachably connected to the bracket of the base 1. The first fixture 3 is provided with a first pressing surface 33. The first pressing surface 33 is provided with a first cavity 32. The contour of the first cavity 32 matches the product to be tested.
[0032] The second fixture 2 is detachably connected to the base plate of the base 1. The second fixture 2 is provided with a second pressing surface 22 and a second cavity 21. The second cavity 21 is used to place the product to be tested. The outline of the second cavity 21 matches the product to be tested. The first cavity 32 is set opposite to the second cavity 21. In this embodiment, the first fixture 3 is configured to be able to vertically descend or rise to approach or move away from the second fixture 2. In other embodiments, the second fixture 2 is configured to be able to vertically descend or rise to approach or move away from the first fixture 3. When the first fixture 3 and the second fixture 2 approach each other, the first pressing surface 33 is pressed against the second pressing surface 22, and the first cavity 32 and the second cavity 21 form a closed detection cavity, enclosing the product to be tested in a sealed space.
[0033] The first fixture 3 is provided with an air inlet 31, which is connected to the closed detection chamber. Test air is introduced into the closed detection chamber through the air inlet 31. If the product is not completely sealed, some of the air in the closed detection chamber will enter the product, causing the air pressure in the closed detection chamber to drop. The operator judges whether the product is completely sealed based on the air pressure difference in the closed detection chamber. In other embodiments, the air inlet 31 can be set on the second fixture 2.
[0034] In one embodiment of this utility model, reference is made to Figure 1 As shown, it also includes a clamping mechanism disposed on the base 1. The clamping mechanism includes a first mounting base 11 and a cylinder 5 disposed on the first mounting base 11. The first mounting base 11 is fixedly connected to a bracket. The piston rod 51 of the cylinder 5 passes through the through hole of the first mounting base 11 and is connected to the first fixture 3. The cylinder 5 drives the first fixture 3 to move closer to or away from the second fixture 2 in a vertical direction. In another embodiment, the cylinder 5 drives the first fixture 3 to move closer to or away from the second fixture 2 in a horizontal direction.
[0035] In one embodiment of this utility model, reference is made to Figure 1 As shown, in order to flexibly disassemble and replace different first fixtures 3 and match various products, a clamping mechanism 4 is also provided at the end of the piston rod 51. The clamping mechanism 4 clamps the first fixture 3. The piston rod 51 is fixedly connected to the first fixture 3 through the clamping mechanism 4. The clamping mechanism 4 is provided with a vent hole 42. When the vent hole 42 is normally closed, the clamping mechanism 4 tightly clamps the first fixture 3. When gas is introduced into the vent hole 42, the clamping mechanism 4 releases the first fixture 3.
[0036] In one embodiment of this utility model, reference is made to Figure 2 and 3 As shown, the first pressing surface 33 and the second pressing surface 22 are both planes, and they are arranged in parallel and perpendicular to the extension and retraction direction of the piston rod 51. When the first fixture 3 presses the second fixture 2, the first pressing surface 33 is pressed against the second pressing surface 22 to ensure the sealing of the closed detection cavity.
[0037] In one embodiment of this utility model, reference is made to Figure 1 and 4 As shown, in order to guide and limit the clamping mechanism 4, the clamping mechanism 4 is provided with two guide rods parallel to the piston rod 51. The first mounting base 11 is provided with two guide holes 111 corresponding to the two guide rods. The guide rods pass through the guide holes 111. When the clamping mechanism 4 rises and falls, the guide rods slide through the guide holes 111.
[0038] In one embodiment of this utility model, reference is made to Figure 1 and 5 As shown, in order to facilitate the disassembly and replacement of the second fixture 2, the base 1 is provided with a second mounting seat 12. At least two plungers 13 are provided on the side of the second mounting seat 12. Each plunger 13 includes a telescopic head 131, a handle 132 and a spring. By pulling the handle 132, the telescopic head 131 is retracted. When the handle 132 is released, the telescopic head 131 extends. The second fixture 2 is provided with a limiting hole 23. When the second fixture 2 is placed in the second mounting seat 12, the telescopic head 131 of the plunger 13 is inserted into the limiting hole 23 to fix the second fixture 2.
[0039] In one embodiment of this utility model, reference is made to Figure 1 As shown, it also includes a spiral hose 7, one end of which is connected to the air inlet 31, and the other end of which is connected to a leak tester. The leak tester provides the test air source for the sealed test chamber and detects the air pressure difference of the sealed test chamber. The spiral hose 7 is telescopic and is used to cooperate with the first fixture 3 to lift and lower.
[0040] In one embodiment of this utility model, reference is made to Figure 1As shown, a pressure sensor 6 is provided on the bracket of the base 1. The pressure sensor 6 is used to detect the pressure between the first fixture 3 and the second fixture 2 to prevent damage to the cylinder 5.
[0041] In one embodiment of this utility model, reference is made to Figure 1 As shown, in order to further seal the gap between the first pressing surface 33 and the second pressing surface 22, the first pressing surface 33 or the second pressing surface 22 is provided with an elastic sealing gasket or an elastic sealing washer.
[0042] In one embodiment of this utility model, reference is made to Figure 1 As shown, the first fixture 3 is positioned directly above the second fixture 2.
[0043] The working principle of the automatic airtightness testing device described in this utility model is as follows:
[0044] Before the first fixture 3 and the second fixture 2 are closed, the product to be tested is placed in the second cavity 21. Then, the cylinder 5 is activated, and the cylinder 5 drives the first fixture 3 to descend, using the first cavity 32 to cover the product. When the first pressing surface 33 is in contact with the second pressing surface 22, the first cavity 32 and the second cavity 21 surround the product and form a closed testing cavity. Then, an airtightness test is performed. The leak tester introduces test air into the closed testing cavity. If the product is not completely sealed, some of the air in the closed testing cavity will enter the product, causing the air pressure in the closed testing cavity to drop. The leak tester judges whether the product is completely sealed based on the air pressure difference in the closed testing cavity. After the test is completed, the cylinder 5 drives the first fixture 3 to rise, and the operator removes the product that has been tested and replaces it with the next product to be tested.
[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. An automatic airtightness testing device, characterized in that, include, Base; A first fixture is detachably connected to the base, and the first fixture is provided with a first pressing surface and a first cavity. The second fixture is detachably connected to the base. The second fixture has a second pressing surface and a second cavity. The first cavity is positioned opposite the second cavity. The first fixture and the second fixture are configured to move closer to or further away from each other. When the first fixture and the second fixture move closer to each other, the first pressing surface is pressed against the second pressing surface, and the first cavity and the second cavity form a closed detection cavity. The first fixture or the second fixture is provided with an air inlet, which is connected to the closed detection cavity, and a test gas source is introduced into the closed detection cavity through the air inlet.
2. The automatic airtightness testing device according to claim 1, characterized in that, It also includes a clamping mechanism disposed on the base, the clamping mechanism including a first mounting seat and a cylinder disposed on the first mounting seat, the piston rod of the cylinder being connected to the first fixture, the cylinder driving the first fixture to move closer to or away from the second fixture in a horizontal or vertical direction.
3. The automatic airtightness testing device according to claim 2, characterized in that, It also includes a clamping mechanism disposed at the end of the piston rod, the clamping mechanism clamping the first fixture, and the piston rod being fixedly connected to the first fixture through the clamping mechanism.
4. The automatic airtightness testing device according to claim 2, characterized in that, The first pressing surface and the second pressing surface are arranged in parallel and are both perpendicular to the extension direction of the piston rod.
5. An automatic airtightness testing device according to claim 3, characterized in that, The clamping mechanism is provided with a guide rod parallel to the piston rod, and the first mounting base is provided with a guide hole through which the guide rod passes.
6. The automatic airtightness testing device according to claim 1, characterized in that, The base is provided with a second mounting seat, and the side of the second mounting seat is provided with a plunger. The second fixture is provided with a limiting hole. When the second fixture is placed on the second mounting seat, the telescopic head of the plunger is inserted into the limiting hole to fix the second fixture.
7. The automatic airtightness testing device according to claim 1, characterized in that, It also includes a spiral hose, one end of which is connected to the air inlet and the other end of which is connected to a leak tester, which provides the test air source.
8. An automatic airtightness testing device according to claim 1, characterized in that, The base is equipped with a pressure sensor, which is used to detect the pressure between the first fixture and the second fixture.
9. An automatic airtightness testing device according to claim 1, characterized in that, The first pressing surface or the second pressing surface is provided with an elastic sealing gasket.
10. An automatic airtightness testing device according to claim 1, characterized in that, The first fixture is positioned directly above the second fixture.