A device for water-tight test of automobile lamps

Abstract

The utility model discloses a kind of equipment for the water-tight test of automobile lamps, it is related to automobile lamps detection technical field, including workbench, protective pad is fixedly installed on workbench, adjusting unit and clamping unit, adjusting unit is fixedly installed with sealing unit. Advantageous effect lies in the collaborative sealing of air bag and movable rod, in combination with the real-time regulation and control of air pressure sensor, ensure sealing effect, effectively reduce the influence of leakage on detection result, when detecting, the pressure change in the car lamp is compared with the reference pressure of contrast bin in real time, if the difference between the two exceeds the set threshold, determine that there is leakage in car lamp, reduce the interference of temperature fluctuation to pressure detection through temperature detection mechanism, can identify small leakage, reduce the error of detection, through vibration motor to vibrate car lamp on workbench, simulate the bump, vibration and so on in vehicle driving, stimulate the gap leakage caused by vibration, ensure the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting testing technology, and in particular to a device for testing the water tightness of automotive lighting. Background Technology

[0002] Automotive lighting testing refers to the process of detecting and evaluating the performance and working status of various automotive lights. Before leaving the factory, automotive lights are usually subjected to various tests, such as brightness, beam, and color tests, as well as sealing tests, to prevent water from entering the lights during use.

[0003] A search revealed that Chinese patent application CN117968987A discloses an automotive lighting testing device. This device mainly uses a drive assembly and a sleeve assembly to drive the inner tube downwards during lighting testing by starting a cylinder. The inner tube then contacts the inspection port of the lighting fixture and injects air into the fixture to test its airtightness, thus avoiding the risk of air leakage in lighting fixtures that pass the power-on test.

[0004] Compared with existing technologies in related fields, it can be seen that when testing the waterproof performance of car lights by inflating them with air and measuring changes in air pressure, hard sealing with rubber plugs is often used. This method has poor compatibility, is prone to seal failure due to deviations in the size of the mounting holes, and has a high misjudgment rate when there are large temperature differences in the environment, thus affecting the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to provide a device for testing the water tightness of automotive lamps in order to solve the above-mentioned problems.

[0006] This utility model achieves the above objectives through the following technical solutions:

[0007] An apparatus for water tightness testing of automotive lamps includes a worktable, on which a protective pad, an adjustment unit, and a clamping unit are fixedly installed, and a sealing unit is fixedly installed on the adjustment unit.

[0008] The sealing unit includes an elastic seat and a first air pressure sensor. The elastic seat is fixedly mounted on the adjustment unit. A first control valve, a second control valve, and a conduit are fixedly mounted on the elastic seat. The conduits are arranged in an array, and a base is provided at the lower end of the conduits. An airbag and a first electrically controlled telescopic mechanism are fixedly mounted on the base. The airbag, the first control valve, and the second control valve are connected to the conduits. The first electrically controlled telescopic mechanism is located at both ends of the base. A traction component is fixedly mounted on the telescopic end of the first electrically controlled telescopic mechanism. The traction component is rotatably connected to a movable rod, which is rotatably arranged on the base. The first air pressure sensor is fixedly mounted on the lower traction component. A comparison component and an inflation / deflation mechanism are fixedly mounted on the worktable. The inflation / deflation mechanism is connected to the first control valve, the second control valve, and the comparison component, respectively.

[0009] Furthermore, the comparison component includes a comparison chamber, which is fixedly installed on the workbench. A third control valve is provided on the outside of the comparison chamber, and a second air pressure sensor and a temperature detection mechanism are fixedly installed inside the comparison chamber. The third control valve is connected to the inflation / deflation mechanism.

[0010] Furthermore, a wear-resistant sleeve is fixedly installed on the outer surface of the airbag.

[0011] Furthermore, the adjustment unit includes a longitudinal displacement mechanism, which is fixedly mounted on the worktable. A mounting frame is fixedly mounted on the longitudinal displacement mechanism, a transverse displacement mechanism is fixedly mounted on the mounting frame, a sliding frame is fixedly mounted on the transverse displacement mechanism, the sliding frame is slidably connected to the mounting frame, a lifting mechanism is fixedly mounted on the sliding frame, and an elastic seat is fixedly mounted on the telescopic end of the lifting mechanism.

[0012] Furthermore, the clamping unit includes a support frame, which is fixedly arranged on the worktable. A second electrically controlled telescopic mechanism is fixedly installed on the support frame. A protective component is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism, and a clamping frame is fixedly installed on the protective component.

[0013] Furthermore, the protective components include a disc spring assembly, which is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism. A pressure sensor is fixedly installed on the disc spring assembly, and the pressure sensor is fixedly installed on the clamping frame.

[0014] Furthermore, the workbench has an internal mounting cavity, in which a vibration motor is fixedly installed.

[0015] The advantages compared to existing technologies are as follows:

[0016] 1. Through the coordinated sealing of the airbag and the movable rod, combined with the real-time control of the air pressure sensor, the sealing effect is guaranteed, effectively reducing the impact of leakage on the test results and ensuring the accuracy of the test results. During the test, the pressure change inside the headlight is compared with the reference pressure in the comparison chamber in real time. If the difference between the two exceeds the set threshold, it is determined that there is a leak in the headlight. The feedback data from the temperature detection mechanism can compensate for the interference of ambient temperature fluctuations on pressure detection, identify minor leaks, reduce detection errors, and ensure the accuracy of the test results.

[0017] 2. The clamping units are arranged in an alternating manner to clamp the headlights, avoiding obstruction of the leak points during clamping, which would affect the accuracy of the test results. The headlights on the worktable are vibrated by a vibration motor to simulate the bumps and vibrations of a vehicle in motion, thereby stimulating gap leaks caused by vibration. This makes it easier for gas to pass through the leak points, reducing the false negative rate and effectively improving the detection effect. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a first isometric structural schematic diagram of the device for testing the water tightness of automotive lamps according to the present invention;

[0020] Figure 2 This utility model describes a device for testing the water tightness of automotive lighting fixtures. Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This utility model describes a device for testing the water tightness of automotive lighting fixtures. Figure 1 Enlarged structural diagram at point B;

[0022] Figure 4 This is a front view cross-sectional structural diagram of the device for testing the water tightness of automotive lamps according to the present invention;

[0023] Figure 5 This is a partial cross-sectional structural diagram of the device for testing the water tightness of automotive lamps according to the present invention;

[0024] Figure 6 This utility model describes a device for testing the water tightness of automotive lighting fixtures. Figure 5 Enlarged structural diagram at point C;

[0025] Figure 7 This is a second isometric structural schematic diagram of the device for testing the water tightness of automotive lamps according to the present invention.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Workbench; 2. Protective pad; 301. Inflation / deflator mechanism; 302. First control valve; 303. Second control valve; 304. Elastic seat; 305. Conduit; 306. Base; 307. Airbag; 308. Wear-resistant sleeve; 309. Movable rod; 310. Traction component; 311. First electrically controlled telescopic mechanism; 312. First air pressure sensor; 313. Third control valve; 314. Comparison chamber; 315. Second air pressure sensor; 316. Temperature detection mechanism; 401. Longitudinal displacement mechanism; 402. Mounting frame; 403. Lateral displacement mechanism; 404. Sliding frame; 405. Lifting mechanism; 501. Support frame; 502. Second electrically controlled telescopic mechanism; 503. Disc spring assembly; 504. Pressure sensor; 505. Clamping frame; 6. Vibration motor. Detailed Implementation

[0028] like Figures 1-7 As shown, an apparatus for water tightness testing of automotive lamps includes a workbench 1, on which a protective pad 2, an adjustment unit, and a clamping unit are fixedly installed. A sealing unit is fixedly installed on the adjustment unit. The automotive lamp to be tested is placed on the workbench 1, protected by the protective pad 2, clamped and fixed by the clamping unit, and the sealing unit is moved by the adjustment unit to adjust its position. The sealing unit seals the mounting holes of the automotive lamp, thus completing the testing of the automotive lamp.

[0029] like Figure 1 , Figure 2 , Figures 4-7As shown, the sealing unit includes an elastic seat 304 and a first air pressure sensor 312. The elastic seat 304 is fixedly mounted on the adjusting unit. A first control valve 302, a second control valve 303, and a conduit 305 are fixedly mounted on the elastic seat 304. The conduits 305 are arranged in a specific order. A base 306 is provided at the lower end of the conduit 305. An airbag 307 and a first electrically controlled telescopic mechanism 311 are fixedly mounted on the base 306. The airbag 307, the first control valve 302, and the second control valve 303 are connected to the conduit 305. The first electrically controlled telescopic mechanism 311 is located at both ends of the base 306. A traction member 310 is fixedly mounted on the telescopic end of the first electrically controlled telescopic mechanism 311. The traction member 310 is rotatably connected to a movable rod 309. The movable rod 309 is rotatably arranged on the base. On the base 306, the first air pressure sensor 312 is fixedly mounted on the lower traction component 310. A comparison component and an inflation / deflation mechanism 301 are fixedly mounted on the worktable 1. The inflation / deflation mechanism 301 is connected to the first control valve 302, the second control valve 303, and the comparison component, respectively. The first air pressure sensor 312, the first control valve 302, the second control valve 303, the first electrically controlled telescopic mechanism 311, and the inflation / deflation mechanism 301 operate using existing technology. Arranged conduits 305 are connected to the airbag 307 and the through base 306, respectively. After the vehicle headlight is fixed on the worktable 1, the elastic seat 304 is moved via the adjustment unit, causing the sealing unit to move to the position of the headlight mounting hole. The elastic seat 304, through the conduits 305, moves the base 306 and... Airbag 307 enters the mounting hole of the headlight. At this time, the first air pressure sensor 312 enters the headlight. During the movement, the elastic seat 304 effectively reduces the hard impact on the headlight during adjustment by its own elasticity, thus providing buffer protection for the headlight. The inflation / deflation mechanism 301 inflates the conduit 305 through the first control valve 302. The gas enters the airbag 307 on the base 306 through the conduit 305. The airbag 307 inflates and embeds itself into the headlight mounting hole, effectively fitting the headlight mounting hole and initially achieving a seal. At this time, the extension ends of the two first electronically controlled telescopic mechanisms 311 respectively drive the traction member 310 to move. The traction member 310 drives the movable rod 309 to rotate around the base 306, adjusting the movable rod. The tilt angle of rod 309 allows the movable rod 309 to press the airbag 307 firmly against the inner and outer surfaces of the headlight, improving the fit and sealing between the airbag 307 and the headlight. This ensures a good seal for different headlight mounting holes, effectively reducing the impact of leakage on test results and guaranteeing accuracy. The inflation / deflation mechanism 301 delivers gas into the headlight through the second control valve 303 and conduit 305. The first pressure sensor 312 detects the gas pressure inside the headlight, ensuring that the pressure reaches the set sealing pressure. The first pressure sensor 312 also prevents excessive pressure inside the headlight from damaging it. The first pressure sensor 312 continuously monitors the internal pressure of the headlight and compares it with the pressure inside the headlight using a comparison component.The leakage of the vehicle headlights is determined by the change in pressure, thus completing the headlight inspection.

[0030] like Figure 4 , Figure 7 As shown, the comparison assembly includes a comparison chamber 314, which is fixedly mounted on the workbench 1. A third control valve 313 is connected to the outside of the comparison chamber 314. A second pressure sensor 315 and a temperature detection mechanism 316 are fixedly mounted inside the comparison chamber 314. The third control valve 313 is connected to a gas filling and discharging mechanism 301. The third control valve 313, the second pressure sensor 315, and the temperature detection mechanism 316 operate using existing technology. The inside of the comparison chamber 314 is a sealed environment. During operation, gas with the same pressure as inside the vehicle headlight is injected into the comparison chamber 314 through the third control valve 313 via the gas filling and discharging mechanism 301. To maintain consistent initial pressure, the temperature inside the comparison chamber 314 is collected in real time by the temperature detection mechanism 316, and the pressure inside the comparison chamber 314 is monitored in real time by the second pressure sensor 315. Based on the monitoring results, the pressure value of the comparison chamber 314 is corrected to the equivalent pressure at the standard temperature and used as a reference value. The pressure change inside the headlight is compared with the reference pressure of the comparison chamber 314 in real time. If the difference between the two exceeds a set threshold, it is determined that there is a leak in the headlight. The feedback data from the temperature detection mechanism 316 can compensate for the interference of ambient temperature fluctuations on pressure detection, identify minor leaks, reduce detection errors, and ensure the accuracy of the detection results.

[0031] like Figure 2 , Figure 5 , Figure 6 As shown, a wear-resistant sleeve 308 is fixedly installed on the outer surface of the airbag 307. The wear-resistant sleeve 308 protects the airbag 307, reduces frictional wear, and extends the service life of the airbag 307.

[0032] like Figure 1 , Figure 4 , Figure 7As shown, the adjustment unit includes a longitudinal displacement mechanism 401, which is fixedly installed on the worktable 1. A mounting frame 402 is fixedly installed on the longitudinal displacement mechanism 401. A transverse displacement mechanism 403 is fixedly installed on the mounting frame 402. A sliding frame 404 is fixedly installed on the transverse displacement mechanism 403. The sliding frame 404 is slidably connected to the mounting frame 402. A lifting mechanism 405 is fixedly installed on the sliding frame 404. An elastic seat 304 is fixedly installed on the telescopic end of the lifting mechanism 405. The longitudinal displacement mechanism 401, the transverse displacement mechanism 403, and the lifting mechanism 405 operate using existing technology. The longitudinal displacement mechanism 401 drives the mounting frame 402 to move longitudinally, and the transverse displacement mechanism 403 drives the sliding frame 404 to move laterally, thereby adjusting the position of the sealing unit to facilitate sealing different vehicle lights. After the sealing unit moves to the adjustment unit position, the lifting mechanism 405 drives the elastic seat 304 to move, so that the sealing unit seals the mounting hole of the vehicle light.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, the clamping unit includes a support frame 501, which is fixedly arranged on the worktable 1. A second electrically controlled telescopic mechanism 502 is fixedly installed on the support frame 501. A protective component is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism 502, and a clamping frame 505 is fixedly installed on the protective component. The second electrically controlled telescopic mechanism 502 operates using existing technology. After the vehicle light is placed on the worktable 1, the second electrically controlled telescopic mechanism 502 drives the clamping frame 505 to move through the protective component. The clamping frame 505 clamps and fixes the vehicle light. The protective component allows the clamping frame 505 to flexibly clamp the vehicle light, thereby protecting the vehicle light and preventing damage during clamping. The clamping units arranged alternately clamp the vehicle light to avoid obstructing the leakage point of the vehicle light during clamping, which would affect the accuracy of the test results. It can also clamp and fix different vehicle lights.

[0034] like Figure 3 As shown, the protective assembly includes a disc spring assembly 503, which is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism 502. A pressure sensor 504 is fixedly installed on the disc spring assembly 503 and is fixedly installed on the clamping frame 505. The disc spring assembly 503 and the pressure sensor 504 operate using existing technology. The disc spring assembly 503 enables the clamping frame 505 to flexibly clamp the vehicle lamp, avoiding damage to the vehicle lamp caused by hard contact. The pressure sensor 504 detects the force applied to the vehicle lamp by the clamping frame 505, thereby facilitating the control of the clamping force. This effectively clamps the vehicle lamp while preventing damage to it.

[0035] like Figure 4 As shown, the workbench 1 has an internal mounting cavity, in which a vibration motor 6 is fixedly installed. The vibration motor 6 operates using existing technology, vibrating the car lights on the workbench 1 to simulate the bumps and vibrations of a vehicle in motion, thereby stimulating gap leakage caused by vibration. This makes it easier for gas to pass through the leak point, reducing the false detection rate and effectively improving the detection effect.

[0036] Working principle: such as Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, the vehicle light to be tested is placed on the protective pad 2. The second electronically controlled telescopic mechanism 502 drives the clamping frame 505 to move through the disc spring assembly 503 and the pressure sensor 504. The clamping frame 505 clamps and fixes the vehicle light. The disc spring assembly 503 makes the clamping frame 505 flexibly clamp the vehicle light. The pressure sensor 504 detects the force applied to the vehicle light by the clamping frame 505, so as to facilitate the control of the clamping force.

[0037] like Figure 1 , Figure 2 , Figures 4-7 As shown, according to the position of the headlight mounting hole, the longitudinal displacement mechanism 401 drives the mounting bracket 402 to move longitudinally, and the transverse displacement mechanism 403 drives the sliding bracket 404 to move laterally, so that the sealing unit moves to the position of the headlight mounting hole. The lifting mechanism 405 drives the elastic seat 304 to move, and the elastic seat 304 drives the base 306 and airbag 307 into the headlight mounting hole through the conduit 305. At this time, the first air pressure sensor 312 enters the headlight.

[0038] like Figure 1 , Figure 2 , Figures 4-7 As shown, the inflation / deflation mechanism 301 inflates the conduit 305 through the first control valve 302. The gas enters the airbag 307 on the base 306 through the conduit 305. The airbag 307 expands and embeds itself into the lamp mounting hole. The airbag 307 can effectively fit the lamp mounting hole, initially achieving a seal. At this time, the extension ends of the two first electronically controlled telescopic mechanisms 311 respectively drive the traction member 310 to move. The traction member 310 drives the movable rod 309 to rotate around the base 306, adjusting the tilt angle of the movable rod 309 so that the movable rod 309 presses the airbag 307 tightly onto the inner and outer surfaces of the lamp, improving the fit and sealing of the airbag 307 and the lamp.

[0039] like Figure 1 , Figure 2 , Figures 4-7As shown, the inflation / deflation mechanism 301 delivers gas into the headlight through the second control valve 303 and the conduit 305. The first pressure sensor 312 detects the gas pressure inside the headlight, ensuring the pressure reaches the set sealing pressure. The first pressure sensor 312 also prevents excessive pressure from damaging the headlight. The first pressure sensor 312 continuously monitors the internal pressure of the headlight. The inflation / deflation mechanism 301, through the third control valve 313, injects gas at the same pressure as inside the headlight into the comparison chamber 314, ensuring consistent initial pressure. The temperature detection mechanism 316 collects the temperature inside the comparison chamber 314 in real time, and the pressure inside the comparison chamber 314 is monitored in real time by the second air pressure sensor 315. Based on the monitoring results, the pressure value of the comparison chamber 314 is corrected to the equivalent pressure at the standard temperature as a reference value. The pressure change inside the headlight is compared with the reference pressure of the comparison chamber 314 in real time. If the difference between the two exceeds the set threshold, it is determined that there is a leak in the headlight. The feedback data from the temperature detection mechanism 316 can compensate for the interference of ambient temperature fluctuations on pressure detection, identify minor leaks, and reduce detection errors.

[0040] like Figure 1 , Figure 3 , Figure 4 , Figure 7 As shown, during the testing process, the car headlights are alternately clamped by the arranged clamping frames 505 to avoid obstructing the leakage points of the car headlights during clamping, which would affect the accuracy of the test results. At the same time, the car headlights on the worktable 1 are vibrated by the vibration motor 6 to simulate the bumps and vibrations of the vehicle during driving, thereby stimulating gap leakage caused by vibration. This makes it easier for gas to pass through the leakage points, reducing the false detection rate and effectively improving the detection effect.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An apparatus for water tight testing of automotive lamps, characterized in that, Includes a workbench (1), on which a protective pad (2), an adjustment unit and a clamping unit are fixedly installed, and on which a sealing unit is fixedly installed; The sealing unit includes an elastic seat (304) and a first air pressure sensor (312). The elastic seat (304) is fixedly mounted on the adjusting unit. A first control valve (302), a second control valve (303), and a conduit (305) are fixedly mounted on the elastic seat (304). The conduits (305) are arranged in a row. A base (306) is provided at the lower end of each conduit (305). An airbag (307) and a first electrically controlled telescopic mechanism (311) are fixedly mounted on the base (306). The airbag (307), the first control valve (302), and the second control valve (303) are connected to the conduit (305). The electrically controlled telescopic mechanism (311) is located at both ends of the base (306). A traction member (310) is fixedly installed on the telescopic end of the first electrically controlled telescopic mechanism (311). The traction member (310) is rotatably connected to a movable rod (309). The movable rod (309) is rotatably arranged on the base (306). The first air pressure sensor (312) is fixedly installed on the lower end of the traction member (310). A comparison component and a gas filling and defilling mechanism (301) are fixedly installed on the worktable (1). The gas filling and defilling mechanism (301) is connected to the first control valve (302), the second control valve (303), and the comparison component, respectively.

2. The apparatus for water-tight testing of automotive lamps according to claim 1, characterized in that: The comparison assembly includes a comparison chamber (314), which is fixedly installed on the workbench (1). A third control valve (313) is provided on the outside of the comparison chamber (314). A second pressure sensor (315) and a temperature detection mechanism (316) are fixedly installed inside the comparison chamber (314). The third control valve (313) is connected to the inflation / deflation mechanism (301).

3. The device for testing the water tightness of automotive lamps according to claim 1, characterized in that: A wear-resistant sleeve (308) is fixedly installed on the outer surface of the airbag (307).

4. The device for testing the water tightness of automotive lamps according to claim 1, characterized in that: The adjustment unit includes a longitudinal displacement mechanism (401), which is fixedly installed on the workbench (1). A mounting frame (402) is fixedly installed on the longitudinal displacement mechanism (401). A transverse displacement mechanism (403) is fixedly installed on the mounting frame (402). A sliding frame (404) is fixedly installed on the transverse displacement mechanism (403). The sliding frame (404) is slidably connected to the mounting frame (402). A lifting mechanism (405) is fixedly installed on the sliding frame (404). An elastic seat (304) is fixedly installed on the telescopic end of the lifting mechanism (405).

5. The device for testing the water tightness of automotive lamps according to claim 1, characterized in that: The clamping unit includes a support frame (501), which is fixedly arranged on the workbench (1). A second electrically controlled telescopic mechanism (502) is fixedly installed on the support frame (501). A protective component is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism (502), and a clamping frame (505) is fixedly installed on the protective component.

6. The device for testing the water tightness of automotive lamps according to claim 5, characterized in that: The protective assembly includes a disc spring assembly (503), which is fixedly installed on the telescopic end of the second electrically controlled telescopic mechanism (502). A pressure sensor (504) is fixedly installed on the disc spring assembly (503), and the pressure sensor (504) is fixedly installed on the clamping frame (505).

7. The device for testing the water tightness of automotive lamps according to claim 1, characterized in that: The workbench (1) has an installation cavity inside, and a vibration motor (6) is fixedly installed in the installation cavity.

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