A short circuit detection device between solder joints of a car wiper assembly circuit board
By employing electrical performance testing in the circuit board solder joint testing equipment for automotive windshield wiper assembly, the problem of misjudgment of short circuits between solder joints in optical testing was solved, and accurate short circuit detection of solder joints was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING XINGFUAN ELECTRONICS CO LTD
- Filing Date
- 2025-07-15
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, the detection of solder joints on the circuit board of automotive wiper assembly mainly adopts optical detection, which cannot effectively avoid the misjudgment of short circuit detection between solder joints.
A short-circuit detection device for solder joints on a car windshield wiper assembly circuit board is used. The device is directly electrically connected to the solder joint and uses electrical performance to detect the short circuit, thus avoiding false positives.
It enables accurate detection of short circuits between solder joints, avoiding the misjudgments of traditional optical inspection and ensuring the reliability and safety of the inspection.
Smart Images
Figure CN224317761U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of solder joint detection technology for automotive wiper assembly circuit boards, specifically a short circuit detection device between solder joints of automotive wiper assembly circuit boards. Background Technology
[0002] Solder joint inspection of automotive wiper assembly circuit boards is a crucial step in ensuring circuit reliability and product safety. Current solder joint inspection primarily relies on visual inspection to ensure there are no cold solder joints, missing solder joints, insufficient or excessive solder, and uses automated vision equipment for inspection—a type of optical inspection. However, this method has the following drawbacks:
[0003] Optical inspection of solder joints inside the chassis can only be performed visually, and it is prone to misjudgment when detecting short circuits between solder joints.
[0004] To address this issue, we propose a short-circuit detection device between solder joints on a car windshield wiper assembly circuit board. Utility Model Content
[0005] The purpose of this invention is to provide a short circuit detection device between solder joints of an automotive windshield wiper assembly circuit board, in order to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a short circuit detection device between solder joints of a circuit board in an automotive windshield wiper assembly, comprising a body and a workpiece structure to be tested. A top platform is fixedly connected to the top surface of the body, and a tester is fixedly connected to the bottom surface of the top platform at a position inside the body. An insertion port is opened on the top surface of the top platform corresponding to the position of the tester. The workpiece structure to be tested includes a housing and a circuit board. The circuit board is disposed inside the housing. A plug-in part is fixedly connected to the bottom surface of the housing, and the plug-in part is connected to the insertion port.
[0007] Preferably, five solder joints are provided on the circuit board. A first test piece is fixed to the side wall of the housing corresponding to the solder joints at the ends. Four second test pieces are fixed to the side wall of the housing corresponding to the remaining four solder joints. The first test piece is inserted into and electrically connected to the solder joints at the ends. The four second test pieces are inserted into and electrically connected to the remaining four solder joints.
[0008] Preferably, the first contact piece is horizontally fixed to the side wall of the housing, and the first contact piece is electrically connected to the first test piece. An inner cavity is opened inside the bottom end of the plug-in part, and four second contact pieces are vertically fixed to the inner cavity. The second contact pieces are electrically connected to the second test piece. Two locking blocks are fixed to the side wall of the housing, and the two locking blocks lock onto the side wall of the circuit board.
[0009] Preferably, four second probes are fixed to the top surface of the tester, with the tops of the four second probes located inside the socket. A first probe is also fixed to the top surface of the tester, and the first probe penetrates the top platform.
[0010] Preferably, the first probe contacts and electrically connects to the end of the first contact piece, the second probe is located inside the inner cavity, the top of the second probe contacts and electrically connects to the second contact piece, a guide plate is fixedly sleeved at the bottom of the inner cavity, and four guide holes are vertically opened on the guide plate, through which the second probe passes.
[0011] Preferably, four indicator lights are fixedly sleeved on the top surface of the top platform, a power interface is fixedly sleeved on the side wall of the machine body, a power switch is fixedly sleeved on the machine body near the power interface, a starter is fixedly sleeved on the top surface of the top platform, a start button is fixedly sleeved on the top surface of the starter, and the start button contacts the bottom surface of the housing.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This invention utilizes a tester to directly connect to the solder joints in the structure of the workpiece under test, and uses electrical performance to check the short circuit between multiple solder joints. Compared with traditional optical testing, it avoids misjudgment. Attached Figure Description
[0014] Figure 1 These are schematic diagrams of the main body structure in the first and second embodiments of this utility model;
[0015] Figure 2 This is a cross-sectional view of the top platform in the first and second embodiments of this utility model;
[0016] Figure 3 This is a schematic diagram of the exploded structure of the workpiece under test in the second embodiment of this utility model;
[0017] Figure 4 This is a cross-sectional view of the insertion part in the second embodiment of the present invention.
[0018] In the diagram: 1. Machine body; 2. Structure of the workpiece to be tested; 11. Top platform; 12. Socket; 13. Starter; 14. Start button; 15. Indicator light; 16. Power interface; 17. Power switch; 18. Tester; 19. First probe; 110. Second probe; 21. Housing; 22. Circuit board; 23. Solder joint; 24. First test piece; 25. Second test piece; 26. Connector; 27. First contact piece; 28. Inner cavity; 29. Second contact piece; 210. Guide plate; 211. Guide hole; 212. Locking block. Detailed Implementation
[0019] 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.
[0020] Example 1:
[0021] Please see Figure 1-2 This utility model provides a technical solution: a short circuit detection device between solder joints of a circuit board in an automotive wiper assembly, comprising a body 1 and a workpiece structure 2 to be tested. A top platform 11 is fixedly connected to the top surface of the body 1, and a tester 18 is fixedly connected to the bottom surface of the top platform 11 inside the body 1. A socket 12 is opened on the top surface of the top platform 11 corresponding to the position of the tester 18. The workpiece structure 2 to be tested includes a housing 21 and a circuit board 22. The circuit board 22 is disposed inside the housing 21. A plug-in part 26 is fixedly connected to the bottom surface of the housing 21, and the plug-in part 26 is plugged into the socket 12. The tester 18 is directly electrically connected to the solder joints 23 in the workpiece structure 2 to be tested, and the electrical performance is used for inspection. This device can detect short circuits between multiple solder joints 23, and compared with traditional optical inspection, it will not produce false judgments.
[0022] Example 2:
[0023] Please see Figure 1-4 This is the second embodiment of the present invention. Based on the previous embodiment, five solder points 23 are provided on the circuit board 22. The first test piece 24 is fixed to the side wall of the housing 21 at the position of the solder point 23 at the end. The other four solder points 23 are fixed to the side wall of the housing 21 at the position of the remaining four solder points 23. The first test piece 24 is inserted into and electrically connected to the solder point 23 at the end. The four second test pieces 25 are inserted into and electrically connected to the remaining four solder points 23.
[0024] The first contact piece 27 is horizontally fixed to the side wall of the housing 21. The first contact piece 27 is electrically connected to the first test piece 24. An inner cavity 28 is opened inside the bottom end of the plug-in part 26. Four second contact pieces 29 are vertically fixed inside the inner cavity 28. The second contact pieces 29 are electrically connected to the second test piece 25. Two locking blocks 212 are fixed to the side wall of the housing 21. The two locking blocks 212 are locked to the side wall of the circuit board 22.
[0025] Four second probes 110 are fixed to the top surface of the tester 18. The tops of the four second probes 110 are located inside the socket 12. A first probe 19 is also fixed to the top surface of the tester 18. The first probe 19 penetrates the top platform 11. The second probes 110 and the first probe 19 are electrically connected to five solder points 23 on the circuit board 22 to perform the testing work.
[0026] The first probe 19 contacts and is electrically connected to the end of the first contact piece 27. The second probe 110 is located inside the inner cavity 28. The top of the second probe 110 contacts and is electrically connected to the second contact piece 29. The bottom of the inner cavity 28 is fixedly sleeved with a guide plate 210. Four guide holes 211 are vertically opened on the guide plate 210. The second probe 110 passes through the guide holes 211.
[0027] Four indicator lights 15 are fixedly sleeved on the top surface of the top platform 11. A power interface 16 is fixedly sleeved on the side wall of the machine body 1. A power switch 17 is fixedly sleeved on the machine body 1 near the power interface 16. A starter 13 is fixedly sleeved on the top surface of the top platform 11. A start button 14 is fixedly sleeved on the top surface of the starter 13. The start button 14 contacts the bottom surface of the housing 21. During testing, when the insertion part 26 of the workpiece structure 2 to be tested is inserted into the insertion port 12, the housing 21 will press down the start button 14, causing the starter 13 to start, and the testing work can be carried out.
[0028] In use, the connector 26 of the workpiece structure 2 to be tested is inserted into the socket 12 on the top platform 11. This allows the four second probes 110 and one first probe 19 to be electrically connected to the five solder points 23 on the circuit board 22. After the housing 21 is pressed down to the bottom, the start button 14 is touched and pressed down, activating the starter 13 and initiating the test. The five solder points 23 are numbered A, B, C, D, and E from one side to the other. The workpiece structure 2 is then sequentially tested for short circuits between each pair of solder points AB, BC, CD, and DE. The tests between the four groups of solder points 23 are performed sequentially. Four indicator lights 15 correspond to the short circuit detection between the four groups of solder points 23. If any group of solder joints 23 passes the inspection, the corresponding indicator light 15 will light up green, and the buzzer will not sound. If a short circuit is detected between any group of solder joints 23, the corresponding indicator light 15 will light up red, and the buzzer will sound an alarm. When a short circuit occurs, the remaining untested solder joints 23 will stop being tested. If the short circuit tests between all four groups of solder joints 23 are completed and all are qualified, all four indicator lights 15 will be green, and the buzzer will not sound an alarm. This utility model uses the tester 18 to directly connect to the solder joints 23 in the structure 2 of the workpiece under test, and uses electrical performance to check the short circuit between multiple solder joints 23. Compared with traditional optical testing, it will not have misjudgment.
[0029] 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 short-circuit detection device between solder joints of an automotive wiper assembly circuit board, comprising a body (1) and a workpiece structure (2) to be tested, characterized in that: The top surface of the machine body (1) is fixed to a top platform (11), and the bottom surface of the top platform (11) is located inside the machine body (1) and a tester (18) is fixed to it. The top surface of the top platform (11) is provided with a socket (12) corresponding to the position of the tester (18). The workpiece structure (2) to be tested includes a housing (21) and a circuit board (22). The circuit board (22) is located inside the housing (21). The bottom surface of the housing (21) is fixed to a plug-in part (26), and the plug-in part (26) is plugged into the socket (12).
2. The short-circuit detection device between solder joints of an automotive wiper assembly circuit board according to claim 1, characterized in that: Five solder joints (23) are provided on the circuit board (22). A first test piece (24) is fixed to the side wall of the housing (21) at the solder joint (23) at the end. Four second test pieces (25) are fixed to the side wall of the housing (21) at the other four solder joints (23). The first test piece (24) is plugged into and electrically connected to the solder joint (23) at the end. The four second test pieces (25) are plugged into and electrically connected to the remaining four solder joints (23).
3. The short-circuit detection device between solder joints of a car windshield wiper assembly circuit board according to claim 2, characterized in that: The first contact piece (27) is horizontally fixed to the side wall of the housing (21), and the first contact piece (27) is electrically connected to the first test piece (24). An inner cavity (28) is opened inside the bottom end of the plug-in part (26), and four second contact pieces (29) are vertically fixed inside the inner cavity (28). The second contact pieces (29) are electrically connected to the second test piece (25). Two locking blocks (212) are fixed to the side wall of the housing (21), and the two locking blocks (212) are locked to the side wall of the circuit board (22).
4. The short-circuit detection device between solder joints of a car windshield wiper assembly circuit board according to claim 3, characterized in that: The top surface of the tester (18) is fixed with four second probes (110), the tops of the four second probes (110) are located inside the socket (12), and the top surface of the tester (18) is also fixed with a first probe (19), which penetrates the top platform (11).
5. The short circuit detection device between solder joints of an automotive wiper assembly circuit board according to claim 4, characterized in that: The first probe (19) contacts and is electrically connected to the end of the first contact piece (27). The second probe (110) is located inside the inner cavity (28). The top of the second probe (110) contacts and is electrically connected to the second contact piece (29). The bottom of the inner cavity (28) is fixedly sleeved with a guide plate (210). Four guide holes (211) are vertically opened on the guide plate (210). The second probe (110) passes through the guide holes (211).
6. The short-circuit detection device between solder joints of an automotive wiper assembly circuit board according to claim 1, characterized in that: Four indicator lights (15) are fixedly sleeved on the top surface of the top platform (11), a power interface (16) is fixedly sleeved on the side wall of the body (1), a power switch (17) is fixedly sleeved on the body (1) near the power interface (16), a starter (13) is fixedly sleeved on the top surface of the top platform (11), a start button (14) is fixedly sleeved on the top surface of the starter (13), and the start button (14) contacts the bottom surface of the housing (21).