Jig for detecting air tightness of vehicle lamp

Abstract

A jig for detecting the air tightness of a vehicle lamp comprises an upper jig and an upper jig and a lower jig which are arranged in parallel, the upper jig is provided with two single limiting columns, the inner sides of the adjacent single limiting columns are provided with induction rods, and an airtight air blocking block is arranged between the two induction rods. A first pre-pressing rod, a second pre-pressing rod, a supporting rod, a stamping air cylinder and an inflating air cylinder are arranged on the side parts of the adjacent airtight air blocking blocks; the upper jig and the lower jig comprise two positioning plates, the two positioning plates are arranged in parallel through alignment limiting columns, profiling placement molds are fixedly arranged on the positioning plates on the lower side, and a plurality of electric plugs are fixedly arranged on one sides of the adjacent profiling placement molds; the upper side positioning plate is provided with a circular air plug assembly, a third pre-pressing rod and a fourth pre-pressing rod which are all located above the profiling placement mold. The vehicle lamp air tightness detection device can be integrated with related transmission equipment, so that high-efficiency streamlined detection can be performed on the vehicle lamp air tightness, detection operation can be continuously performed, a pre-pressing structure is provided, the vehicle lamp is prevented from loosening through the pre-pressing structure, and the vehicle lamp detection rework rate is reduced.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology for automotive lamp covers, specifically a fixture for testing the airtightness of automotive lamps. Background Technology

[0002] Vehicle lights are tools for illuminating roads at night and for issuing various driving signals. Vehicle lights are generally divided into headlights, taillights, and turn signals. The airtightness of a vehicle light refers to its ability to prevent water, dust, and other impurities from entering its interior when sealed. This ability is mainly assessed through the IP rating system, which typically includes two numbers: the first indicates the dustproof rating, and the second indicates the waterproof rating. For example, IP67 indicates a dustproof rating of 6 and a waterproof rating of 7.1. The airtightness of a vehicle light has a significant impact on its performance and lifespan. Poor airtightness can lead to the following problems: 1) Fogging: When the light is on, the temperature around the bulb rises rapidly, causing water vapor inside the light to condense on the lens, affecting illumination and driving safety; 2) Water accumulation: Poorly sealed lights can allow water to enter. When the bulb temperature rises, the evaporation of water can cause the bulb to explode; 3) Pressure changes: During driving, a pressure difference occurs inside and outside the light. Poorly sealed lights can draw in water, dust, etc., affecting lighting performance and lifespan.

[0003] Therefore, it is necessary to propose a fixture for testing the air tightness of vehicle lights that can meet the requirements of assembly line equipment operation and efficiently test air tightness. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a fixture for testing the air tightness of vehicle lights, so as to solve the problem that the existing fixtures for testing the air tightness of vehicle lights cannot be fully integrated with production line equipment.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a fixture for testing the air tightness of vehicle lights, comprising an upper fixture and upper and lower fixtures arranged in parallel, characterized in that: individual limiting posts are respectively provided on the left and right sides of the lower surface of the upper fixture, and sensing rods are provided on the inner sides of adjacent individual limiting posts, and an air tightness blocking block is provided between the two sensing rods. A first pre-pressure rod and a second pre-pressure rod are provided on the side of adjacent air tightness blocking blocks, and a support rod, an imprinting cylinder and an inflation cylinder are respectively provided on the side of adjacent first pre-pressure rods. The upper and lower fixtures include two positioning plates, which are arranged parallel to each other by at least two sets of alignment limiting posts. A contour placement mold is fixed in the upper middle part of the lower positioning plate, and several electrical plugs are fixed in one side of the adjacent contour placement mold. A circular air plug assembly, a third pre-pressure rod and a fourth pre-pressure rod are arranged sequentially on the upper positioning plate. The circular air plug assembly, the third pre-pressure rod and the fourth pre-pressure rod are all located above the contour placement mold and aligned with it.

[0006] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the upper fixture is also provided with a first gas socket for automatically sealing the gas in the pipeline during connection to prevent gas leakage.

[0007] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the upper and lower fixtures are also provided with a second gas socket for automatically sealing the gas in the pipeline during connection to prevent gas leakage.

[0008] To further improve the ease of use of the fixture used for testing the airtightness of vehicle lights, the present invention adopts the following solution: the number of the sensing rods is at least two.

[0009] To further improve the ease of use of the fixture used for testing the airtightness of vehicle lights, the present invention adopts the following solution: each of the aforementioned sensing rods can be detachably fitted with a screw sensor at its end.

[0010] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the circular air plug assembly includes a cylinder and an air plug rod, the air plug rod is detachably mounted on the cylinder, and the cylinder is fixed to the inner upper side of the upper and lower fixtures.

[0011] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the length of the first preload rod is less than the length of the second preload rod.

[0012] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the length of the third preload rod is less than the length of the fourth preload rod.

[0013] To further improve the ease of use of the fixture used for testing the air tightness of vehicle lights, the present invention adopts the following solution: the contour placement mold is equipped with an embedding structure for various vehicle light models.

[0014] The beneficial effects of this utility model are as follows: This fixture for testing the air tightness of vehicle lights is suitable for assembly line equipment operation and can be integrated with related transmission equipment, thereby enabling efficient and streamlined testing of the air tightness of vehicle lights. It can perform continuous testing operations and provides a pre-compression structure to prevent the vehicle lights from loosening and reduce the rework rate of vehicle light testing. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the upper fixture of this utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the upper fixture of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the upper and lower fixtures of this utility model;

[0018] Figure 4 This is a schematic diagram of the main structure of the upper and lower fixtures of this utility model;

[0019] Figure 5 This is a three-dimensional structural diagram of the present invention in its assembled state.

[0020] In the diagram: 1 Upper fixture, 11 Single-unit limiting post, 12 Support rod, 13 Sensing rod, 14 First pre-compression rod, 15 Second pre-compression rod, 16 Airtight plug, 17 Imprinting cylinder, 18 Inflating cylinder, 19 First air socket, 2 Upper and lower fixtures, 21 Positioning plate, 22 Contouring placement mold, 23 Alignment limiting post, 24 Third pre-compression rod, 25 Fourth pre-compression rod, 26 Circular air plug assembly, 27 Electrical plug, 28 Second air socket. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1 to 4 The present invention provides a fixture for testing the air tightness of vehicle lights, comprising an upper fixture 1 and upper and lower fixtures 2 arranged side by side.

[0023] In this utility model: single-unit limiting posts 11 are respectively provided on the left and right sides of the lower surface of the upper fixture 1, and sensing rods 13 are provided on the inner side of adjacent single-unit limiting posts 11. An airtight sealing block 16 is provided between the two sensing rods 13. A first pre-pressure rod 14 and a second pre-pressure rod 15 are provided on the side of adjacent airtight sealing blocks 16. A support rod 12, an imprinting cylinder 17 and an inflation cylinder 18 are respectively provided on the side of adjacent first pre-pressure rod 14. The upper and lower fixtures 2 include two positioning plates 21, which are arranged parallel to each other by at least two sets of alignment limiting posts 23. A contour placement mold 22 is fixedly mounted on the upper middle part of the lower positioning plate 21, and several electrical plugs 27 are fixedly mounted on one side of the adjacent contour placement mold 22. A circular air plug assembly 26, a third pre-pressure rod 24 and a fourth pre-pressure rod 25 are sequentially arranged on the upper positioning plate 21. The circular air plug assembly 26, the third pre-pressure rod 24 and the fourth pre-pressure rod 25 are all located above the contour placement mold 22 and aligned with it.

[0024] Furthermore, the upper fixture 1 is also provided with a first gas socket 19, which is used to automatically seal the gas in the pipeline when connecting the vehicle lights, effectively preventing gas leakage.

[0025] Furthermore, the upper and lower fixtures 2 are also provided with a second gas socket 28, which is used to automatically seal the gas in the pipeline when connecting the vehicle lights, effectively preventing gas leakage.

[0026] Furthermore, at least two sensing rods 13 are provided, and each sensing rod 13 can be detachably equipped with a screw sensor at its end. The screw sensor is used to detect whether the corresponding screw of the product has been installed.

[0027] Furthermore, the circular air plug assembly 26 includes a cylinder and an air plug rod, the air plug rod being detachably mounted on the cylinder, and the cylinder being fixed to the inner upper side of the upper and lower fixtures 2, wherein the air plug rod is used to install a leak plug for the vehicle headlight.

[0028] Furthermore, the length of the first preload rod 14 is less than the length of the second preload rod 15; the length of the third preload rod 24 is less than the length of the fourth preload rod 25. This is to accommodate the preload of different types of vehicle lights.

[0029] Furthermore, the contour placement mold 22 is equipped with a mounting structure for various types of vehicle lights, so as to place different types of vehicle lights and facilitate the operation of the staff.

[0030] Please see Figure 5The working principle of this utility model is as follows: In use, firstly, the car light is placed on the upper fixture 1. The airtight plug 16 is used to test the sealing performance of the car light seal. The air cylinder 18 is used to inflate the car light to test its sealing performance. The car light is pre-pressurized by the first pre-pressurization rod 14 or the second pre-pressurization rod 15 to prevent loosening. The screw sensor set on the sensing rod 13 is used to detect whether the screws corresponding to the car light are installed. The car light to be tested is placed on the upper and lower fixtures 2. The car light is pre-pressurized by the third pre-pressurization rod 24 or the fourth pre-pressurization rod 25 to prevent loosening. The circular air plug assembly 26 is used to install the air leak plug on the car light. The product is placed on a model to facilitate operation by the staff. Then, the external power supply and test current are connected through the power plug 27 to perform a light test on the car light. Finally, the car light is checked to see if it is placed in place, indicating whether the car light has passed the test. That is, the upper fixture 1 is used to manually install the headlight air plug, place the headlight, and test whether the headlight can be used normally; the upper and lower fixtures 2 are used to test the airtightness of the headlight and to check whether the screws for installing the headlight are in place and missing.

[0031] This utility model is applicable to assembly line equipment operations and can be integrated with related transmission equipment to achieve efficient and streamlined testing of the airtightness of vehicle lights. It can perform continuous testing operations and provides a pre-compression structure to prevent vehicle lights from loosening and reduce the rework rate of vehicle light testing.

[0032] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for testing the airtightness of vehicle lamps, comprising an upper fixture (1) and upper and lower fixtures (2) arranged side by side, characterized in that: The upper fixture (1) has single-unit limiting posts (11) on the left and right sides of its lower surface. Each single-unit limiting post (11) has a sensing rod (13) on its inner side. An airtight block (16) is provided between the two sensing rods (13). A first pre-pressure rod (14) and a second pre-pressure rod (15) are provided on the side of each adjacent airtight block (16). A support rod (12), an imprinting cylinder (17), and an inflation cylinder (18) are provided on the side of each adjacent first pre-pressure rod (14). The upper and lower fixtures (2) include two positioning plates (21). The two positioning plates (21) are arranged in parallel vertically by at least two sets of alignment limiting posts (23). A contour placement mold (22) is fixedly provided in the upper middle part of the positioning plate (21) on the lower side. Several electrical plugs (27) are fixedly provided on one side of the adjacent contour placement mold (22). A circular air plug assembly (26), a third pre-pressure rod (24) and a fourth pre-pressure rod (25) are arranged sequentially on the positioning plate (21) on the upper side. The circular air plug assembly (26), the third pre-pressure rod (24) and the fourth pre-pressure rod (25) are all located above the contour placement mold (22) and are aligned with the contour placement mold (22).

2. The fixture for testing the airtightness of vehicle lights according to claim 1, characterized in that: The upper fixture (1) is also provided with a first gas socket (19) for automatically sealing the gas in the pipeline during connection.

3. The fixture for testing the airtightness of vehicle lights according to claim 1, characterized in that: The upper and lower fixtures (2) are also provided with a second gas socket (28) for automatically sealing the gas in the pipeline during connection.

4. The fixture for testing the airtightness of vehicle lights according to claim 1, characterized in that: The number of sensor rods (13) is at least two.

5. A fixture for testing the airtightness of vehicle lights according to claim 4, characterized in that: Each of the aforementioned sensing rods (13) has a screw sensor detachably installed at its end.

6. A fixture for testing the airtightness of vehicle lamps according to claim 1, characterized in that: The circular air plug assembly (26) includes a cylinder and an air plug rod. The air plug rod is detachably mounted on the cylinder, and the cylinder is fixed to the inner upper side of the upper and lower fixtures (2).

7. A fixture for testing the airtightness of vehicle lights according to claim 1, characterized in that: The length of the first preload rod (14) is less than the length of the second preload rod (15).

8. A fixture for testing the airtightness of vehicle lights according to claim 1, characterized in that: The length of the third preload rod (24) is less than the length of the fourth preload rod (25).

9. A fixture for testing the airtightness of vehicle lamps according to claim 1, characterized in that: The contour placement mold (22) is equipped with an insert structure for various types of car lights.

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