Automobile wire harness airtightness detection device

Abstract

The utility model relates to the technical field of automobile wire harness detection, and discloses an automobile wire harness air tightness detection device, which comprises a detection table, a detection assembly arranged at one end of the upper end surface of the detection table, an opening formed in one end, far away from the detection assembly, of the detection table, and a water storage frame clamped on the detection table through the opening, and a chute formed in the middle of the upper end surface of the detection table, the upper end surface of the detection bench is provided with a positioning assembly through a chute, and the positioning assembly is provided with an automobile wire harness. According to the automobile wire harness air tightness detection device, effective butt joint of the front end of the connecting plug of the automobile wire harness and the detection assembly can be realized through arrangement of the positioning assembly, an air leakage part can be rapidly determined through mutual cooperation of the detection assembly and the water storage frame, and time and labor are saved.

Description

Technical Field

[0001] This utility model relates to the field of automotive wiring harness testing technology, specifically an automotive wiring harness airtightness testing device. Background Technology

[0002] Automotive wiring harnesses are the main network of automotive circuits and a core component of automotive electrical systems. They are responsible for connecting various electronic and electrical components in the vehicle, enabling power transmission and signal transmission, and ensuring the normal operation of various automotive systems.

[0003] During the production of automotive wiring harnesses, air tightness testing is required to ensure the reliability and safety of automotive electrical systems. Currently, the commonly used method for testing the air tightness of automotive wiring harnesses is to fill the wiring harness with compressed gas, turn off the gas source, and monitor the pressure change. If the pressure drop exceeds the set value, it is determined to be a leak.

[0004] Existing air tightness testing devices have limited functionality, are inconvenient to connect during inflation, and cannot quickly pinpoint the location of leaks when they occur. Therefore, there is a need to provide an automotive wiring harness air tightness testing device to solve these problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an automotive wiring harness airtightness testing device, which solves the problems mentioned in the background.

[0006] This utility model provides the following technical solution: an automotive wiring harness air tightness testing device, including a testing platform, a testing component is provided at one end of the upper surface of the testing platform, an opening is provided at the end of the testing platform away from the testing component, a water storage frame is snapped into the testing platform through the opening, a sliding groove is provided in the middle of the upper surface of the testing platform, a positioning component is provided on the upper surface of the testing platform through the sliding groove, and an automotive wiring harness is provided on the positioning component.

[0007] The detection assembly includes a first detection box and a second detection box. Both the first and second detection boxes are fixedly mounted on the upper surface of the detection platform via a base plate. A pressure gauge is installed at the center of the upper surface of both the first and second detection boxes.

[0008] The positioning component includes a sliding frame that is slidably disposed on the upper surface of the detection platform.

[0009] Preferably, the positioning component further includes a bracket, a first cylinder, a second cylinder, and a strip-shaped pressure plate. The bracket is disposed on the upper surface of the testing platform and located on both sides of the testing component, and the first cylinder is disposed on the upper surface of the bracket.

[0010] Preferably, the output end of the first cylinder is connected to the slide frame via a connecting block, the second cylinder is located at the center of the upper surface of the slide frame, and the piston rod of the second cylinder extends into the slide frame through the upper wall of the slide frame.

[0011] Preferably, a strip-shaped pressure plate is provided at the lower end of the piston rod of the second cylinder, and grooves that cooperate with the connectors of the automotive wiring harness are provided on the bottom surface of the inner side of the slide frame and the lower surface of the strip-shaped pressure plate.

[0012] Preferably, an air inlet is provided at the center of the outer side of the first detection box, and an exhaust port is provided at the center of the outer side of the second detection box. Both the first and second detection boxes have insertion protrusions at the center of their inner sides.

[0013] Preferably, a rubber inner tube is provided inside the insertion protrusion, and the front end of the rubber inner tube extends out of the insertion protrusion and is provided with an outer edge.

[0014] Preferably, the main body of the automotive wiring harness is placed inside the water storage frame.

[0015] Preferably, a support frame is provided at both ends of the lower surface of the testing table, and a strip support plate is provided between the two support frames.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This automotive wiring harness airtightness testing device is equipped with a positioning component. When the connectors at both ends of the automotive wiring harness are inserted into the grooves in the sliding frame, the second cylinder operates, and the piston rod pushes the strip pressure plate down to contact the bottom surface inside the sliding frame. This effectively positions the connectors of the automotive wiring harness. Then, the first cylinder operates, which pulls the sliding frame closer to the testing component, so that the front end of the connector of the automotive wiring harness aligns with the connector protrusion.

[0018] 2. This automotive wiring harness air tightness testing device, after the connectors of the automotive wiring harness are connected, injects compressed gas into the No. 1 testing box through the air inlet. After the air source is turned off, it monitors whether the pressure changes of the two pressure gauges meet the set values, and at the same time observes whether air bubbles appear inside the water reservoir. When the pressure changes of the two pressure gauges meet the set values ​​and no air bubbles are generated in the water reservoir, it can be determined that there is no leakage in the automotive wiring harness, achieving dual detection and ensuring the accuracy of the results. When the pressure changes of the two pressure gauges exceed the set values ​​and air bubbles are generated in the water reservoir, it can be determined that there is a leak in the main part of the automotive wiring harness. When the pressure changes of the two pressure gauges exceed the set values, but no air bubbles are generated in the water reservoir, it is possible to directly check whether there is a leak in the rest of the automotive wiring harness or at the connector connection, thereby quickly identifying the leak location, saving time and effort. Attached Figure Description

[0019] Figure 1This is one of the overall structural schematic diagrams of the automotive wiring harness airtightness testing device of this utility model;

[0020] Figure 2 This is the second schematic diagram of the overall structure of the automotive wiring harness airtightness testing device of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the testing platform and water storage frame of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the detection component of this utility model;

[0023] Figure 5 This is a schematic diagram of the positioning component of this utility model.

[0024] In the diagram: 1. Testing platform; 101. Opening; 102. Slide groove; 2. Support frame; 3. Testing assembly; 301. Testing box No. 1; 302. Testing box No. 2; 303. Air inlet; 304. Exhaust outlet; 305. Pressure gauge; 306. Connecting protrusion; 307. Rubber inner tube; 4. Water storage frame; 5. Positioning assembly; 501. Bracket; 502. Cylinder No. 1; 503. Slide frame; 504. Cylinder No. 2; 505. Strip pressure plate; 506. Groove; 6. Automotive wiring harness. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-5 An airtightness testing device for automotive wiring harnesses includes a testing platform 1, a testing component 3 is provided at one end of the upper surface of the testing platform 1, an opening 101 is provided at the end of the testing platform 1 away from the testing component 3, a water storage frame 4 is snapped into the testing platform 1 through the opening 101, a sliding groove 102 is provided in the middle of the upper surface of the testing platform 1, a positioning component 5 is provided on the upper surface of the testing platform 1 through the sliding groove 102, and an automotive wiring harness 6 is provided on the positioning component 5.

[0027] The detection assembly 3 includes a first detection box 301 and a second detection box 302. Both the first detection box 301 and the second detection box 302 are fixedly mounted on the upper surface of the detection table 1 via a base plate. A pressure gauge 305 is installed at the center of the upper surface of both the first detection box 301 and the second detection box 302.

[0028] The positioning component 5 includes a sliding frame 503, which is slidably disposed on the upper surface of the detection stage 1.

[0029] The positioning component 5 also includes a bracket 501, a first cylinder 502, a second cylinder 504, and a strip pressure plate 505. The bracket 501 is set on the upper surface of the detection table 1 and located on both sides of the detection component 3. The first cylinder 502 is set on the upper surface of the bracket 501. By setting the bracket 501, the first cylinder 502 can be effectively supported and the stability of the first cylinder 502 can be ensured.

[0030] In this configuration, the output end of cylinder 502 is connected to slide frame 503 via a connecting block. Cylinder 504 is located at the center of the upper surface of slide frame 503. The piston rod of cylinder 504 extends into slide frame 503 through the upper wall. A strip-shaped pressure plate 505 is provided at the lower end of the piston rod of cylinder 504. The bottom surface inside slide frame 503 and the lower surface of strip-shaped pressure plate 505 are both provided with grooves 506 that cooperate with the connectors of automotive wiring harness 6. When the connectors at both ends of automotive wiring harness 6 are inserted into the grooves 506 in slide frame 503, cylinder 504 operates, and the piston rod pushes strip-shaped pressure plate 505 down to contact the bottom surface inside slide frame 503, thereby effectively positioning the connectors of automotive wiring harness 6. Then, cylinder 502 operates, and slide frame 503 is pulled closer to detection component 3, so that the front end of connector of automotive wiring harness 6 is aligned with the connector protrusion 306.

[0031] Among them, the No. 1 test box 301 has an air inlet 303 at the center of its outer side, and the No. 2 test box 302 has an exhaust port 304 at the center of its outer side. Both the No. 1 test box 301 and the No. 2 test box 302 have a plug-in protrusion 306 at the center of their inner side. A rubber inner tube 307 is provided inside the plug-in protrusion 306. The front end of the rubber inner tube 307 extends out of the plug-in protrusion 306 and has an outer edge. When the front end of the connector of the automotive wiring harness 6 is inserted into the interior of the rubber inner tube 307, the sliding frame 503, the strip pressure plate 505 and the front end of the plug-in protrusion 306 cooperate to effectively squeeze the outer edge of the rubber inner tube 307 to ensure the sealing of the joint.

[0032] The main body of the automotive wiring harness 6 is placed inside the water storage box 4. After the connectors of the automotive wiring harness 6 are connected, compressed gas is injected into the first detection box 301 through the air inlet 303. After the air source is turned off, the pressure changes of the two pressure gauges 305 are monitored to see if they meet the set values. At the same time, it is observed whether air bubbles appear inside the water storage box 4. When the pressure changes of the two pressure gauges 305 meet the set values ​​and no air bubbles are generated in the water storage box 4, it can be determined that the automotive wiring harness 6 has no leakage, realizing dual detection and ensuring the accuracy of the results. When the pressure changes of the two pressure gauges 305 exceed the set values ​​and air bubbles are generated in the water storage box 4, it can be determined that the main body of the automotive wiring harness 6 has leaked. When the pressure changes of the two pressure gauges 305 exceed the set values, but no air bubbles are generated in the water storage box 4, it is possible to directly check whether the rest of the automotive wiring harness 6 or the connector connection point has leaked, thereby quickly determining the leak location, saving time and effort.

[0033] Among them, the lower surface of the testing platform 1 is provided with support frames 2 at both ends, and a strip support plate is provided between the two support frames 2. By providing the strip support plate, it can be effectively connected with the support frames 2 at both ends to form a whole, which is used to support the testing platform 1 and ensure the stability of the testing platform 1. The strip support plate can also support the water storage frame 4.

[0034] Working principle: When the two connectors of the automotive wiring harness 6 are inserted into the grooves 506 in the slide frame 503, the second cylinder 504 works, and the piston rod pushes the strip pressure plate 505 down to contact the bottom surface inside the slide frame 503, thus effectively positioning the connectors of the automotive wiring harness 6. Then, the first cylinder 502 works, which pulls the slide frame 503 closer to the detection component 3, so that the front end of the connector of the automotive wiring harness 6 is aligned with the insertion protrusion 306. When the front end of the connector of the automotive wiring harness 6 is inserted into the rubber inner tube 307, the slide frame 503, the strip pressure plate 505 and the front end of the insertion protrusion 306 cooperate to effectively squeeze the outer edge of the rubber inner tube 307, ensuring the sealing of the connection.

[0035] Furthermore, after the connectors of the automotive wiring harness 6 are connected, compressed gas is injected into the first detection box 301 through the air inlet 303. After the air source is turned off, the pressure changes of the two pressure gauges 305 are monitored to see if they meet the set values. At the same time, it is observed whether air bubbles appear inside the water storage box 4. When the pressure changes of the two pressure gauges 305 meet the set values ​​and no air bubbles are generated in the water storage box 4, it can be determined that the automotive wiring harness 6 has no leakage, achieving dual detection and ensuring the accuracy of the results. When the pressure changes of the two pressure gauges 305 exceed the set values ​​and air bubbles are generated in the water storage box 4, it can be determined that the main body of the automotive wiring harness 6 has leaked. When the pressure changes of the two pressure gauges 305 exceed the set values, but no air bubbles are generated in the water storage box 4, it is possible to directly check whether the rest of the automotive wiring harness 6 or the connector connection point has leaked, thereby quickly determining the leak location, saving time and effort.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for testing the airtightness of automotive wiring harnesses, characterized in that, The device includes a testing platform (1), a testing component (3) is provided at one end of the upper surface of the testing platform (1), an opening (101) is provided at the end of the testing platform (1) away from the testing component (3), a water storage frame (4) is snapped into the testing platform (1) through the opening (101), a sliding groove (102) is provided in the middle of the upper surface of the testing platform (1), a positioning component (5) is provided on the upper surface of the testing platform (1) through the sliding groove (102), and an automotive wiring harness (6) is provided on the positioning component (5). The detection component (3) includes a first detection box (301) and a second detection box (302). Both the first detection box (301) and the second detection box (302) are fixedly mounted on the upper surface of the detection platform (1) via a base plate. A pressure gauge (305) is provided at the center of the upper surface of both the first detection box (301) and the second detection box (302). The positioning component (5) includes a sliding frame (503), which is slidably disposed on the upper surface of the detection stage (1).

2. The automotive wiring harness airtightness testing device according to claim 1, characterized in that, The positioning component (5) also includes a bracket (501), a first cylinder (502), a second cylinder (504), and a strip pressure plate (505). The bracket (501) is set on the upper surface of the detection table (1) and located on both sides of the detection component (3). The first cylinder (502) is set on the upper surface of the bracket (501).

3. The automotive wiring harness airtightness testing device according to claim 2, characterized in that, The output end of the first cylinder (502) is connected to the slide frame (503) through a connecting block. The second cylinder (504) is located at the center of the upper surface of the slide frame (503). The piston rod of the second cylinder (504) passes through the upper wall of the slide frame (503) and extends into the slide frame (503).

4. The automotive wiring harness airtightness testing device according to claim 3, characterized in that, The piston rod of the second cylinder (504) is provided with a strip pressure plate (505) at the lower end. The bottom surface of the inner side of the slide frame (503) and the lower surface of the strip pressure plate (505) are both provided with grooves (506) that cooperate with the connector of the car wiring harness (6).

5. The automotive wiring harness airtightness testing device according to claim 1, characterized in that, An air inlet (303) is provided at the center of the outer side of the first detection box (301), and an exhaust port (304) is provided at the center of the outer side of the second detection box (302). An insertion protrusion (306) is provided at the center of the inner side of both the first detection box (301) and the second detection box (302).

6. The automotive wiring harness airtightness testing device according to claim 5, characterized in that, A rubber inner tube (307) is provided inside the insertion protrusion (306), and the front end of the rubber inner tube (307) extends out of the insertion protrusion (306) and is provided with an outer edge.

7. The automotive wiring harness airtightness testing device according to claim 1, characterized in that, The main body of the vehicle wiring harness (6) is placed inside the water storage frame (4).

8. The automotive wiring harness airtightness testing device according to claim 1, characterized in that, The testing platform (1) has support frames (2) at both ends of its lower surface, and a strip support plate is provided between the two support frames (2).

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