A sealing test device for an automobile lamp

Abstract

The utility model relates to vehicle lamp test technical field, concretely relates to a kind of sealing property testing device of car light, including base, clamping mechanism is provided in base upper portion, still include the testing mechanism for the sealing property test of car light, testing mechanism is located above clamping mechanism, lifting plate bottom end is equipped with gas pipe, gas pipe bottom end is equipped with the sealing structure for sealing around the air hole when car light sealing property test is tested to the sealing property of car light by clamping mechanism first car light clamping fixed, then gas pipe in testing mechanism is pressed at the air hole on the surface of car light, gas is sent into in car light, before car light test, utilize sealing structure to clean the dust around the air hole on the surface of car light, to prevent dust from affecting the sealing property between gas pipe and air hole, to increase the adhesion between the both, improve the sealing property between the both, guarantee the accuracy of test data.

Description

Technical Field

[0001] This utility model relates to the field of vehicle lamp testing technology, and in particular to a sealing test device for automotive lamps. Background Technology

[0002] The airtightness of automotive lights is a key factor in ensuring their lifespan and performance. Poor sealing allows impurities such as rainwater and dust to enter, leading to bulb damage, short circuits, or reduced lighting performance. Therefore, airtightness testing equipment is indispensable in the automotive light manufacturing process. Typically, air inlets are pre-drilled on the surface of the lights during production to allow gas to be injected into the lights for airtightness testing.

[0003] In existing technologies, the sealing performance of vehicle lights is typically tested by introducing gas into a pre-drilled inflation hole on the surface of the light. However, when the inflation hole is vented, dust may remain on the surface of the light and accumulate around it. As a result, when an external inflation tube is pressed against the area around the inflation hole, the presence of dust may reduce the tightness of the seal between the tube and the hole, potentially creating gaps and causing air leakage. This can lead to errors in the test data and compromise the accuracy of the test results. Utility Model Content

[0004] The purpose of this invention is to provide a sealing performance testing device for automotive headlights in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions: A sealing performance testing device for automotive headlights includes a base, a clamping mechanism disposed above the base, and a testing mechanism for testing the sealing performance of the headlights, the testing mechanism being located above the clamping mechanism. The testing mechanism includes a support frame mounted on the base. Two sleeves symmetrically arranged in the front-rear direction are installed on the upper end of the support frame. Hydraulic cylinders are installed inside the sleeves. A lifting plate is installed at the lower end of the hydraulic cylinders. An air pump is installed at the center of the lifting plate. An air supply pipe is installed at the bottom end of the lifting plate. An air inlet pipe is connected between the air supply pipe and the air pump. A sealing structure is provided at the bottom end of the air supply pipe for sealing around the air inlet during the headlight sealing test.

[0006] Preferred: The sealing structure includes a fixing ring disposed on the side wall of the air supply pipe, a fixing sleeve fixed to the bottom end of the fixing ring, an inner mounting ring fixedly installed on the inner wall of the fixing sleeve, an outer mounting ring slidably installed on the side wall of the fixing sleeve, a dust removal cloth provided between the outer mounting ring and the inner mounting ring, the dust removal cloth fully covering the bottom end of the fixing sleeve, the dust removal cloth being made of silicone material, a tension spring connecting the outer mounting ring and the side wall of the fixing sleeve, multiple fixing posts fixed around the edge of the fixing ring, a pressing post slidably installed at the bottom end of the fixing post, the bottom end of the pressing post being lower than the bottom end of the air supply pipe, a compression spring connecting the pressing post and the fixing post, a pull rope connecting the side wall of the pressing post and the outer mounting ring, and a pressing structure provided inside the fixing sleeve and between the dust removal cloth to increase the adhesion between the dust removal cloth and the surface of the vehicle headlight.

[0007] Preferred: The pressing structure includes a cavity opened inside the fixed sleeve near the dust removal cloth, a friction wheel is rotatably installed at the bottom of the cavity, the bottom end of the friction wheel is in contact with the surface of the dust removal cloth, a lower pressing ring is slidably installed on the inner wall of the cavity away from the air supply pipe, a return spring is connected between the lower pressing ring and the cavity, a protruding plate is fixed at the top of the friction wheel, and a connecting ring is fixed on the side wall of the lower pressing ring near the protruding plate.

[0008] Preferably, the clamping mechanism includes a mounting base disposed on the upper end of the base, a placement groove being provided on the upper end of the mounting base, threaded rods being rotatably mounted on both the front and rear sides of the mounting base, a sliding plate being mounted on the threaded rod, the sliding plate being threadedly connected to the threaded rod, the sliding plate being slidably connected to the mounting base, and two connecting plates symmetrically arranged in the front-rear direction being mounted on the upper end of the sliding plate, with a clamping block being rotatably mounted on the end of the connecting plate near the placement groove.

[0009] Preferably, the bottom end of the clamping block is arc-shaped, and a torsion spring is connected between the rotating end of the clamping block and the connecting plate.

[0010] Preferably, the pressure ring is made of rubber.

[0011] Preferably, a rotating handle is fixed to the end of the threaded rod.

[0012] Compared with existing technologies, the beneficial effects are as follows: The headlight is first clamped and fixed by the clamping mechanism. Then, the air supply pipe in the testing mechanism is pressed against the air inlet on the headlight surface to send gas into the headlight to test its sealing performance. Before testing the headlight, the dust around the air inlet on the headlight surface is cleaned using the sealing structure to prevent dust from affecting the sealing performance between the air supply pipe and the air inlet, thereby increasing the fit between the two and improving the sealing performance, ensuring the accuracy of the test data. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a spatial perspective view of the sealing performance testing device for automotive headlights described in this utility model; Figure 2 This is a schematic diagram of the clamping mechanism of the sealing performance testing device for automotive headlights described in this utility model; Figure 3 This is a cross-sectional view of the internal structure of the air supply pipe of the sealing performance testing device for automotive headlights described in this utility model; Figure 4 yes Figure 3 A magnified view of a section at point A in the middle; Figure 5 This is a schematic diagram of the structure between the sealing structure and the air supply pipe of the automotive headlight sealing test device described in this utility model.

[0015] The annotations in the attached figures are explained as follows: 100. Base; 201. Support frame; 202. Pipe sleeve; 203. Hydraulic cylinder; 204. Lifting plate; 205. Air pump; 206. Air supply pipe; 207. Fixing ring; 208. Fixing sleeve; 209. Inner mounting ring; 210. Dust removal cloth; 211. Outer mounting ring; 212. Cavity; 213. Friction wheel; 214. Protruding plate; 215. Lower pressure ring; 216. Connecting ring; 217. Fixing column; 218. Pressing column; 219. Pull rope; 301. Mounting seat; 302. Sliding plate; 303. Threaded rod; 304. Connecting plate; 305. Clamping block; 306. Placement slot. Detailed Implementation

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components. All electrical components mentioned in this document are electrically connected to an external main controller and 220V AC mains power, and the main controller can be a conventionally known control device such as a computer. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-5 As shown, a sealing performance testing device for automotive headlights includes a base 100, a clamping mechanism for clamping and fixing the headlights, the clamping mechanism being located above the base 100, and a testing mechanism for testing the sealing performance of the headlights, the testing mechanism being located above the clamping mechanism.

[0018] In this embodiment, the clamping mechanism includes a mounting base 301 disposed on the upper end of the base 100. The upper end of the mounting base 301 is provided with a placement groove 306. Threaded rods 303 are rotatably mounted on both the front and rear sides of the mounting base 301. A sliding plate 302 is mounted on the threaded rod 303. The sliding plate 302 is threadedly connected to the threaded rod 303 and slidably connected to the mounting base 301. A rotating handle is fixed to the end of the threaded rod 303. Two connecting plates 304 are symmetrically arranged in the front-rear direction on the upper end of the sliding plate 302. A clamping block 305 is rotatably mounted on the end of the connecting plate 304 near the placement groove 306. The bottom end of the clamping block 305 is arc-shaped. A torsion spring is connected between the rotating end of the clamping block 305 and the connecting plate 304.

[0019] In this embodiment: the testing mechanism includes a support frame 201 set above the mounting base 301. Two sleeves 202 are symmetrically arranged in the front-rear direction at the upper end of the support frame 201. A hydraulic cylinder 203 is provided inside the sleeve 202. A lifting plate 204 is installed at the lower end of the hydraulic cylinder 203. An air pump 205 is installed at the center of the lifting plate 204. An air supply pipe 206 is installed at the bottom end of the lifting plate 204. An air inlet pipe is connected between the air supply pipe 206 and the air pump 205. A sealing structure is provided at the bottom end of the air supply pipe 206 for sealing around the air inlet during the vehicle headlight sealing test.

[0020] The sealing structure includes a fixing ring 207 disposed on the side wall of the gas supply pipe 206, a fixing sleeve 208 fixed to the bottom end of the fixing ring 207, an inner mounting ring 209 fixedly installed on the inner wall of the fixing sleeve 208, an outer mounting ring 211 slidably installed on the side wall of the fixing sleeve 208, and a dust removal cloth 210 provided between the outer mounting ring 211 and the inner mounting ring 209, the dust removal cloth 210 completely covering the bottom end of the fixing sleeve 208, the dust removal cloth 210 being made of silicone material, and a connection between the outer mounting ring 211 and the side wall of the fixing sleeve 208. A tension spring is connected to the fixing ring 207, and multiple fixing posts 217 are fixed around the edge. A pressing post 218 is slidably installed at the bottom end of the fixing post 217. The bottom end of the pressing post 218 is lower than the bottom end of the air supply pipe 206. A compression spring is connected between the pressing post 218 and the fixing post 217. A pull rope 219 is connected between the side wall of the pressing post 218 and the outer mounting ring 211. A pressing structure is provided inside the fixing sleeve 208 and between the dust removal cloth 210 to increase the adhesion between the dust removal cloth 210 and the surface of the vehicle headlight.

[0021] The pressing structure includes a cavity 212 located inside the fixed sleeve 208 near the dust removal cloth 210. A friction wheel 213 is rotatably mounted at the bottom of the cavity 212, with the bottom of the friction wheel 213 in contact with the surface of the dust removal cloth 210. A lower pressure ring 215, made of rubber, is slidably mounted on the inner wall of the cavity 212 away from the air supply pipe 206. A return spring connects the lower pressure ring 215 to the cavity 212. A protrusion 214 is fixed to the top of the friction wheel 213. A protrusion 214 is fixed to the side wall of the lower pressure ring 215 near the protrusion 210. 4. A connecting ring 216 is fixed on one side. The headlight is first clamped and fixed by the clamping mechanism. Then, the air supply pipe 206 in the testing mechanism is pressed against the air inlet on the headlight surface to send gas into the headlight to test the headlight's sealing performance. Before testing the headlight, the dust around the air inlet on the headlight surface is cleaned using the sealing structure to prevent the dust from affecting the sealing performance between the air supply pipe 206 and the air inlet, thereby increasing the fit between the two and improving the sealing performance, ensuring the accuracy of the test data.

[0022] Working principle: First, place the headlight to be tested in the placement slot 306 above the mounting base 301. Then, flip the air inlet on the headlight surface to be directly below the air supply pipe 206. Then, the worker turns the rotating handle to drive the threaded rod 303 to rotate, causing the sliding plates 302 on the front and rear sides to move towards each other, driving the clamping blocks 305 on the front and rear sides to move closer to the headlight surface, and using the clamping blocks 305 on the front and rear sides to clamp and fix the headlight.

[0023] Then, the hydraulic cylinder 203 drives the lifting plate 204 to move downwards, which in turn moves the air supply pipe 206 downwards, causing multiple pressing columns 218 to move downwards. This causes the bottom ends of the pressing columns 218 to abut against the upper surface of the headlight. As the air supply pipe 206 continues to move downwards, it continuously compresses the pressing columns 218, causing relative displacement between them and the air supply pipe 206. This, in turn, pulls the pull rope 219 upwards, which in turn pulls the outer mounting ring 211 upwards. The outer mounting ring 211 then pulls the dust removal cloth 21... Move towards the pressing post 218 to gradually stretch the dust removal cloth 210. During the stretching process, the dust removal cloth 210 and the surface of the headlight will be relatively displaced. As a result, the dust removal cloth 210 will gradually push the dust around the air hole on the surface of the headlight outward, keeping the dust away from the air hole. This will prevent dust from being present between the bottom surface of the dust removal cloth 210 and the surface of the headlight, thus preventing gaps between them, increasing the fit between them, improving the sealing between them, and ensuring the accuracy of the test data.

[0024] After being stretched for a long time, the dust removal cloth 210 may shrink. If the dust removal cloth 210 shrinks, it will rub against the friction wheel 213 during its shrinking movement, causing the friction wheel 213 to rotate clockwise. The friction wheel 213 will then rotate the convex plate 214 clockwise, which will press the connecting ring 216 downwards, thereby causing the lower pressure ring 215 to move downwards. The bottom of the lower pressure ring 215 presses the dust removal cloth 210 downwards, increasing the friction between the dust removal cloth 210 and the surface of the headlight to prevent the dust removal cloth 210 from shrinking and thus affecting the sealing between the dust removal cloth 210 and the headlight surface. Then, the air pump 205 is turned on, and the air supply pipe 206 is used to introduce gas into the headlight. The actual reading on the pressure gauge is observed to perform subsequent sealing tests on the headlight.

[0025] 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. A sealing performance testing device for automotive headlights, comprising a base (100), wherein a clamping mechanism is disposed above the base (100), characterized in that: It also includes a testing mechanism for testing the sealing performance of vehicle lights, the testing mechanism being located above the clamping mechanism; The testing mechanism includes a support frame (201) set above the base (100). Two sleeves (202) are installed on the upper end of the support frame (201) in a symmetrical arrangement along the front-rear direction. A hydraulic cylinder (203) is provided inside the sleeve (202). A lifting plate (204) is installed at the lower end of the hydraulic cylinder (203). An air pump (205) is installed at the center of the lifting plate (204). An air supply pipe (206) is installed at the bottom end of the lifting plate (204). An air inlet pipe is connected between the air supply pipe (206) and the air pump (205). A sealing structure is provided at the bottom end of the air supply pipe (206) for sealing around the air inlet during the vehicle headlight sealing test.

2. The sealing performance testing device for automotive headlights according to claim 1, characterized in that: The sealing structure includes a fixing ring (207) disposed on the side wall of the gas transmission pipe (206), a fixing sleeve (208) fixed at the bottom end of the fixing ring (207), an inner mounting ring (209) fixedly installed on the inner wall of the fixing sleeve (208), and an outer mounting ring (211) slidably installed on the side wall of the fixing sleeve (208). A dust removal cloth (210) is provided between the outer mounting ring (211) and the inner mounting ring (209), the dust removal cloth (210) completely covering the bottom end of the fixing sleeve (208), the dust removal cloth (210) being made of silicone. The outer mounting ring (211) and the side wall of the fixing sleeve (208) are connected. A tension spring is connected between the walls. Multiple fixing posts (217) are fixed around the edge of the fixing ring (207). A pressing post (218) is slidably installed at the bottom of the fixing post (217). The bottom of the pressing post (218) is lower than the bottom of the air pipe (206). A compression spring is connected between the pressing post (218) and the fixing post (217). A pull rope (219) is connected between the side wall of the pressing post (218) and the outer mounting ring (211). A pressing structure is provided inside the fixing sleeve (208) and between the dust removal cloth (210) to increase the adhesion between the dust removal cloth (210) and the surface of the vehicle lamp.

3. The sealing performance testing device for automotive headlights according to claim 2, characterized in that: The pressing structure includes a cavity (212) opened inside the fixed sleeve (208) near the dust removal cloth (210). A friction wheel (213) is rotatably installed at the bottom of the cavity (212). The bottom of the friction wheel (213) is in contact with the surface of the dust removal cloth (210). A lower pressure ring (215) is slidably installed on the inner wall of the cavity (212) away from the air supply pipe (206). A return spring is connected between the lower pressure ring (215) and the cavity (212). A protrusion plate (214) is fixed at the top of the friction wheel (213). A connecting ring (216) is fixed on the side wall of the lower pressure ring (215) near the protrusion plate (214).

4. The sealing performance testing device for automotive headlights according to claim 3, characterized in that: The clamping mechanism includes a mounting base (301) disposed on the upper end of the base (100). The upper end of the mounting base (301) is provided with a placement groove (306). Threaded rods (303) are rotatably mounted on both the front and rear sides of the mounting base (301). A sliding plate (302) is mounted on the threaded rod (303). The sliding plate (302) is threadedly connected to the threaded rod (303). The sliding plate (302) is slidably connected to the mounting base (301). Two connecting plates (304) are symmetrically arranged in the front-rear direction on the upper end of the sliding plate (302). A clamping block (305) is rotatably mounted on one end of the connecting plate (304) near the placement groove (306).

5. The sealing performance testing device for automotive headlights according to claim 4, characterized in that: The bottom end of the clamping block (305) is arc-shaped, and a torsion spring is connected between the rotating end of the clamping block (305) and the connecting plate (304).

6. The sealing performance testing device for automotive headlights according to claim 5, characterized in that: The pressure ring (215) is made of rubber.

7. The sealing performance testing device for automotive headlights according to claim 6, characterized in that: A rotating handle is fixed to the end of the threaded rod (303).

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