Radar air tightness test tool

Abstract

According to the radar air tightness test tool provided by the utility model, the trapezoid plug and the trapezoid groove structure can ensure the air tightness, the wiring port is sealed by the hole plug, and the breathable film hole is sealed by the breathable film hole plug, so that the radar is ensured not to increase the gas loss in the sealed cavity due to the wiring port or the breathable film hole, and the measurement accuracy is ensured; and meanwhile, the arranged digging piece cavity facilitates the taking of the radar.

Description

Technical Field

[0001] The utility model belongs to the technical field of radar airtightness testing, and particularly relates to a radar airtightness testing tooling. Background Art

[0002] An automotive radar is an important component of a vehicle, which is mainly used to enable functions such as obstacle detection, collision prediction, and automatic cruise control for the vehicle. Since the driving environment of the vehicle includes environments with high humidity and high moisture content, automotive components usually need to have good airtight performance to prevent rainwater from penetrating into the interior through the outer shell of the automotive component, thereby causing failures of the automotive component and affecting the driving safety of the vehicle.

[0003] In the prior art for the airtightness detection of automotive radars, a wiring port and a breathable film hole are respectively provided on the outer shell of the radar to be detected. After the radar to be detected is placed in the lower mold cavity, the air cylinder is started to drive the air plug to seal the radar wiring port. Then, after the upper and lower molds are closed, a sealed cavity is formed. Then, the air compressor inflates the sealed cavity quantitatively through the air leakage tester, and a certain air pressure (50 kPa) needs to be maintained for a period of time to achieve inflation balance. Then, the test end and the reference end of the air leakage tester are compared through a differential pressure sensor. If the pressure drop value is within the judgment range, it is qualified; otherwise, it is unqualified.

[0004] After the above detection tooling completes the detection, it is not easy to take out the radar from the lower mold cavity, resulting in difficult handling and reducing the test efficiency; and since the breathable film hole of the radar is only blocked by the bottom wall of the lower mold, it will cause the problem that gas enters the radar through the breathable film hole, reducing the accuracy of the radar airtightness test. Therefore, the utility model proposes a radar airtightness testing tooling to solve the above problems. Content of the Utility Model

[0005] The utility model provides a radar airtightness testing tooling, aiming to solve the problems raised in the background art.

[0006] The utility model is realized as follows. A radar airtightness testing tooling includes a frame and a mold closing air cylinder;

[0007] A detection table is provided at the top of the frame. A lower mold is provided on the detection table. A sealing mechanism is provided on one side of the lower mold, and the sealing mechanism is used to seal the wiring port of the radar to be detected;

[0008] A loading cavity is opened on the lower mold, and the loading cavity is used to accommodate the radar to be detected. A picking part cavity is opened in the loading cavity, and a stabilizing pad and a breathable film hole plug are further provided on the bottom surface of the inner wall of the loading cavity;

[0009] The output end of the mold-closing cylinder is connected to the upper mold. After the upper mold and the lower mold are closed, a sealed cavity is formed. The sealed cavity is connected to an air leakage tester and an air compressor.

[0010] Preferably, the sealing mechanism includes a push cylinder, the output end of which is connected to a trapezoidal plug, and the end face of the trapezoidal plug is connected to a hole plug, which is used to seal the wiring port.

[0011] Preferably, the lower mold is further provided with a trapezoidal groove, which matches the trapezoidal plug.

[0012] Preferably, the radar is further provided with a breathable membrane hole, and the breathable membrane hole plug is used to seal the breathable membrane hole.

[0013] Preferably, both the stabilizing pad and the vent membrane plug protrude from the bottom surface of the inner wall of the loading cavity.

[0014] Preferably, the stabilizing pad is used to stabilize the radar.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] During use, after the radar is installed into the loading cavity, the vent plug covers the vent holes, while the stabilizing pad stabilizes the radar, preventing one side from being too high and thus ensuring the vent plug completely covers the vent holes. Then, the push cylinder is activated, moving the trapezoidal plug into the trapezoidal groove. The plug seals the wiring ports. Next, the mold-closing cylinder descends, causing the upper and lower molds to close. After closing, a sealed cavity is formed, housing the radar within. Due to the mold closing, the upper mold presses against the radar, further stabilizing the vent plug and the vent hole. The air film vents completely cover and seal the breathable membrane vents, thus completely sealing the wiring ports and breathable membrane vents on the radar. Then, a certain amount of air is injected into the sealed cavity by an air compressor through an air leak tester, and a certain air pressure (50 kPa) is maintained for a period of time to allow the inflation to balance. Then, the test end and the reference end of the air leak tester are compared by a differential pressure sensor. If the pressure drop value is within the judgment range, it is qualified; otherwise, it is unqualified. After the test is completed, the sealed cavity is degassed and the upper mold is reset. The radar can be removed through the clip cavity for easy retrieval. Attached Figure Description

[0017] Figure 1 This is a perspective view of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 This is a front view of the overall structure of an embodiment of the present utility model;

[0019] Figure 3 This is a top view of the structure of the lower module before the radar is loaded in this embodiment of the present invention;

[0020] Figure 4 This is a top view of the structure after the radar is mounted on the lower module in this embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the trapezoidal plug and the hole plug before use in the embodiments of this utility model;

[0022] Figure 6 This is a schematic diagram of the trapezoidal plug and the hole plug after use in an embodiment of this utility model;

[0023] Figure 7 This is a schematic diagram of the radar structure in an embodiment of the present invention;

[0024] Figure 8 This is a top view of the lower mold in the comparative example.

[0025] In the picture:

[0026] 1. Frame; 2. Lower mold; 21. Loading cavity; 22. Stabilizing pad; 23. Vent membrane hole plug; 24. Part clamping cavity; 3. Sealing mechanism; 31. Trapezoidal plug; 32. Hole plug; 4. Top plate; 5. Mold closing cylinder; 6. Upper mold; 7. Air compressor; 8. Radar; 81. Wiring port; 82. Vent membrane hole. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0028] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example:

[0033] Please see Figures 1 to 7 This utility model provides a technical solution: a radar air tightness testing fixture, including a frame 1 and a mold-closing cylinder 5; a testing platform is provided on the top of the frame 1, a lower mold 2 is provided on the testing platform, a sealing mechanism 3 is provided on one side of the lower mold 2, the sealing mechanism 3 is used to seal the wiring port 81 of the radar 8 to be tested; a loading cavity 21 is provided on the lower mold 2, the loading cavity 21 is used to accommodate the radar 8 to be tested, a clipping cavity 24 is provided inside the loading cavity 21, and a stabilizing pad 22 and a breathable membrane plug 23 are also provided on the bottom surface of the inner wall of the loading cavity 21; the output end of the mold-closing cylinder 5 is connected to an upper mold 6, and the upper mold 6 and the lower mold 2 are closed to form a sealed cavity, the sealed cavity is connected to an air leakage tester and an air compressor 7.

[0034] In this embodiment, the position of the vent membrane plug 23 on the bottom surface of the inner wall of the loading cavity 21 corresponds to the position of the vent membrane hole 82 on the outer wall of the radar 8 to be tested. After the radar 8 is installed into the loading cavity 21, the vent membrane plug 23 covers the vent membrane hole 82. After the radar 8 is installed into the loading cavity 21, the fastening cavity 24 in the loading cavity 21 is exposed (as shown in the attached figure). Figure 4 As shown), the mold clamping cylinder 5 is fixedly mounted on the top plate 4, and the top surface of the frame 1 is provided with four pillars arranged in a matrix, and the top plate 4 is fixedly mounted on the top surface of the pillars.

[0035] In use, after the radar 8 is installed into the loading cavity 21, the vent membrane plug 23 covers the vent membrane hole 82, while the stabilizing pad 22 is used to stabilize the radar 8, preventing the vent membrane plug 23 from not completely covering the vent membrane hole 82 if one side of the radar 8 is too high. Then, the push cylinder is activated to drive the trapezoidal plug 31 into the trapezoidal groove (as shown in the attached diagram). Figure 5 and Figure 6 As shown in the diagram, at this time, the plug 32 will seal the wiring port 81. Then, the mold closing cylinder 5 is activated to descend and drive the upper mold 6 and the lower mold 2 to close. After the upper mold 6 and the lower mold 2 close, a sealed cavity is formed. At this time, the radar 8 is contained in the internal space of the sealed cavity. Since the upper mold 6 and the lower mold 2 close, the upper mold 6 will press against the radar 8. At this time, the venting membrane plug 23 and the venting membrane hole 82 completely cover and seal the venting membrane hole 82. Thus, the wiring port 81 and the venting membrane hole 82 on the radar 8 are completely sealed. Then, the air compressor 7 is used to quantitatively fill the sealed cavity with air through the air leakage tester, and a certain air pressure (50 kPa) must be maintained for a period of time to allow the filling to balance. Then, the test end and the reference end of the air leakage tester are compared by the differential pressure sensor. If the pressure drop value is within the judgment range, it is qualified; otherwise, it is unqualified. After the test is completed, the sealed cavity is degassed and the upper mold 6 is reset. The radar 8 can be taken out through the clip cavity 24 for easy removal.

[0036] The trapezoidal plug 31 and trapezoidal groove structure in this scheme (as shown in the attached diagram) Figure 5 and Figure 6 As shown, the airtightness is ensured by the sealing of the wiring port 81 by the plug 32 and the sealing of the vent membrane hole 82 by the vent membrane plug 23, which ensures that the radar 8 will not increase the gas loss in the sealed cavity due to the wiring port 81 or the vent membrane hole 82, thus ensuring the accuracy of the measurement; at the same time, the clip cavity 24 is set to facilitate the removal of the radar 8.

[0037] Furthermore, the sealing mechanism 3 includes a push cylinder, the output end of which is connected to a trapezoidal plug 31, and the end face of the trapezoidal plug 31 is connected to a hole plug 32, which is used to seal the wiring port 81.

[0038] For further details, please refer to Figure 5 and Figure 6 The lower mold 2 is also provided with a trapezoidal groove, which matches the trapezoidal plug 31.

[0039] In this embodiment, the actuating cylinder drives the trapezoidal plug 31 into the trapezoidal groove (as shown in the attached diagram). Figure 5 and Figure 6 As shown), at this time, the plug 32 will seal the wiring port 81, and the trapezoidal plug 31 and the trapezoidal groove structure can ensure the airtightness of the lower mold 2.

[0040] For further details, please refer to Figure 7 The radar 8 is also equipped with a breathable membrane hole 82, and a breathable membrane hole plug 23 is used to seal the breathable membrane hole 82.

[0041] In this embodiment, the vent membrane plug 23 is used to seal the vent membrane hole 82. After the radar 8 is installed into the loading cavity 21, the vent membrane plug 23 covers the vent membrane hole 82. Then the upper mold 6 and the lower mold 2 are closed. The upper mold 6 will press against the radar 8. At this time, the vent membrane plug 23 and the vent membrane hole 82 completely cover and seal the vent membrane hole 82.

[0042] Furthermore, both the stabilizing pad 22 and the vent membrane plug 23 protrude from the bottom surface of the inner wall of the loading cavity 21.

[0043] Furthermore, the stabilizing pad 22 is used to stabilize the radar 8.

[0044] In this embodiment, the stabilizing pad 22 is used to stabilize the radar 8 and prevent the air permeable membrane plug 23 from being unable to completely cover the air permeable membrane hole 82 due to the radar 8 being too high on one side.

[0045] Comparative example:

[0046] Please see Figure 8 A radar air tightness testing fixture includes a frame 1 and a mold-closing cylinder 5. The top of the frame 1 is provided with a testing platform, and a lower mold 2 is provided on the testing platform. A sealing mechanism 3 is provided on one side of the lower mold 2. The sealing mechanism 3 is used to seal the wiring port 81 of the radar 8 to be tested. A loading cavity 21 is opened on the lower mold 2 to accommodate the radar 8 to be tested. The output end of the mold-closing cylinder 5 is connected to an upper mold 6. After the upper mold 6 and the lower mold 2 are closed, a sealed cavity is formed. The sealed cavity is connected to an air leakage tester and an air compressor 7. The radar 8 is also provided with a breathable membrane hole 82.

[0047] In this embodiment, the ventilation membrane hole 82 on the radar 8 will increase the air loss in the sealed cavity, affecting the test results. Furthermore, after the test is completed, the radar 8 will be difficult to remove, reducing work efficiency.

[0048] The working principle and usage process of this utility model are as follows: During use, after the radar 8 is installed into the loading cavity 21, the vent membrane plug 23 covers the vent membrane hole 82, while the stabilizing pad 22 stabilizes the radar 8, preventing one side of the radar 8 from being too high and thus ensuring the vent membrane plug 23 completely covers the vent membrane hole 82. Then, the push cylinder is activated to drive the trapezoidal plug 31 into the trapezoidal groove (as shown in the attached diagram). Figure 5 and Figure 6As shown in the diagram, at this time, the plug 32 will seal the wiring port 81. Then, the mold closing cylinder 5 is activated to descend and drive the upper mold 6 and the lower mold 2 to close. After the upper mold 6 and the lower mold 2 close, a sealed cavity is formed. At this time, the radar 8 is contained in the internal space of the sealed cavity. Since the upper mold 6 and the lower mold 2 close, the upper mold 6 will press against the radar 8. At this time, the venting membrane plug 23 and the venting membrane hole 82 completely cover and seal the venting membrane hole 82. Thus, the wiring port 81 and the venting membrane hole 82 on the radar 8 are completely sealed. Then, the air compressor 7 is used to charge the sealed cavity with a certain amount of air through the air leakage tester, and a certain air pressure (50 kPa) must be maintained for a period of time to allow the inflation to balance. Then, the test end and the reference end of the air leakage tester are compared with the differential pressure sensor. If the pressure drop value is within the judgment range, it is qualified; otherwise, it is unqualified. After the test is completed, the sealed cavity is depressurized and the upper mold 6 is reset. The radar 8 can be taken out through the clip cavity 24 for easy removal.

[0049] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 radar air tightness test tooling, characterized by: Includes a frame (1) and a mold-closing cylinder (5); The top of the frame (1) is provided with a testing platform, the testing platform is provided with a lower mold (2), and a sealing mechanism (3) is provided on one side of the lower mold (2). The sealing mechanism (3) is used to seal the wiring port (81) of the radar (8) to be tested. The lower mold (2) is provided with a loading cavity (21), which is used to accommodate the radar (8) to be tested. The loading cavity (21) is provided with a clipping cavity (24), and the bottom surface of the inner wall of the loading cavity (21) is also provided with a stabilizing pad (22) and a breathable membrane plug (23). The output end of the mold-closing cylinder (5) is connected to the upper mold (6). After the upper mold (6) and the lower mold (2) are closed, a sealed cavity is formed. The sealed cavity is connected to the air leakage tester and the air compressor (7).

2. The radar air tightness test tooling of claim 1, wherein: The sealing mechanism (3) includes a push cylinder, the output end of which is connected to a trapezoidal plug (31), and the end face of the trapezoidal plug (31) is connected to a hole plug (32), which is used to seal the wiring port (81).

3. The radar airtightness testing fixture according to claim 2, characterized in that: The lower mold (2) is also provided with a trapezoidal groove, which matches the trapezoidal plug (31).

4. The radar air tightness test tooling of claim 1, wherein: The radar (8) is also provided with a breathable membrane hole (82), and the breathable membrane hole plug (23) is used to seal the breathable membrane hole (82).

5. The radar air tightness test tooling of claim 4, wherein: The stabilizing pad (22) and the breathable membrane plug (23) both protrude from the bottom surface of the inner wall of the loading cavity (21).

6. The radar air tightness test tooling of claim 5, wherein: The stabilizing pad (22) is used to stabilize the radar (8).

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