A micro short circuit detection device for circuit boards

Abstract

This utility model relates to the field of circuit board testing technology and discloses a circuit board micro short circuit detection device, including a platform. A monitoring box is fixedly connected to the upper surface of the platform. An interface is opened inside the monitoring box, and a display screen is fixedly connected inside the monitoring box. A connector is snapped into the interface. A test lead is fixedly connected to one end of the connector. A shell is provided at the end of the test lead away from the connector. A rubber wheel is rotatably connected to one end of a fixing post. A fixing ring is rotatably connected to the outside of the fixing post. A probe is snapped into the inside of the fixing mechanism. By placing the probe into the gap of the fixing ring, rotating the lead screw, the fixing post moves. The movement of the fixing post rotates the fixing ring, causing the fixing post to move clockwise. This allows the rubber wheel to tightly clamp the probe, achieving the effect of fixing the probe and improving the problem of low continuous efficiency in production line operation.

Description

Technical Field

[0001] This utility model relates to the field of circuit board testing technology, and in particular to a circuit board micro short circuit testing device. Background Technology

[0002] In today's rapidly developing electronics and information industry, circuit boards (PCBs), as the core carriers for electronic components and circuit connections, are widely used. However, during the manufacturing process, PCBs are highly susceptible to micro-short circuits due to external factors. These micro-short circuits can not only cause abnormal increases in local current on the PCB, leading to overheating and damage to components, but can also cause the entire electronic device to malfunction. Therefore, accurate and efficient detection of micro-short circuits is crucial during PCB production, assembly, and repair, thus requiring a PCB micro-short circuit detection device.

[0003] The existing resistance measurement method uses a fixed-connection probe to contact a preset test point on the circuit board, applying a specific voltage or current signal to the circuit board. Then, a high-precision resistance measurement module collects and analyzes the resistance value changes between the test points. When the probe is worn or deformed, resulting in a decrease in contact accuracy, the resistance value test will be inaccurate, so the probe needs to be replaced. However, because the replacement of fixed-connection probes is time-consuming, it leads to low efficiency in continuous production line operation. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a circuit board micro short circuit detection device, which aims to improve the problem of long replacement time of fixed connection probes, resulting in low continuous efficiency of production line operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A circuit board micro short circuit detection device includes a platform, a monitoring box fixedly connected to the upper surface of the platform, an interface inside the monitoring box, a display screen fixedly connected inside the monitoring box, a connector snapped into the interface, a test lead fixedly connected to one end of the connector, a housing provided at the end of the test lead away from the connector, a fixing mechanism installed inside the housing, the fixing mechanism including a fixing component and a fixing post, the fixing post being rotatably connected inside the housing, a rotating post being rotatably connected inside the fixing post, a rubber wheel being rotatably connected to one end of the fixing post, a fixing ring being rotatably connected to the outside of the fixing post, the fixing ring being rotatably connected to the outside of the housing, a limit post being fixedly connected to the upper surface of the fixing ring, and a probe snapped into the inside of the fixing mechanism.

[0007] Preferably, the fixing component one includes a fixing post two, which is located inside the outer shell. A lead screw one is threadedly connected inside the fixing post two. A limit post two is fixedly connected to one end of the lead screw one. A fixing post three is rotatably connected to the outside of the lead screw one. A rotating handle is fixedly connected to the other end of the lead screw one. A fixing ring two is rotatably connected to the upper surface of the rotating post. The rubber wheel is located outside the probe.

[0008] Preferably, the housing is provided with a fixing component two, which includes a lead screw two. The lead screw two is externally threaded into the housing. One end of the lead screw two is rotatably connected to a connecting post. The connecting post is externally fixedly connected to a fixing plate one. The lead screw two extends through the housing.

[0009] Preferably, a probe is snapped into the inside of the fixing plate, the probe is fixedly connected to the lower surface of the test line, and the outside of the fixing plate is slidably connected to the inside of the housing.

[0010] Preferably, the upper surface of the platform is provided with a buckle, and a fixing plate is fixedly connected to the outside of the buckle.

[0011] Preferably, a spring is provided on the outside of the fixing plate 2, the outside of the spring is located inside the platform, and a circuit board is snapped onto the outside of the buckle.

[0012] Preferably, the lower surface of the third fixing post is fixed to the upper surface of the outer shell, and the outer surface of the rotating post penetrates the interior of the first fixing post, the first fixing ring, and the second fixing ring.

[0013] Preferably, the inside of the fixing plate is provided with a groove, and the inside of the fixing plate is engaged with the outside of the probe.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by placing the probe into the gap of the first fixing ring, rotating the first lead screw, the second fixing column is driven to move. At the same time, the second fixing column drives the first fixing ring to rotate. During the rotation of the first fixing ring, the first fixing column moves clockwise. During the movement of the first fixing column, the rubber wheel can be tightly clamped by the clamping force, thus achieving the effect of fixing the probe and improving the problem of low continuous efficiency of the production line.

[0016] 2. In this utility model, by pulling the buckle backward and then placing the circuit board into the groove opened on the platform, and then using the spring's rebound force to reset the buckle, the circuit board is fixed, which can be fixed for convenient testing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of a circuit board micro short circuit detection device proposed in this utility model;

[0018] Figure 2 This is a partial structural diagram of the fixing mechanism of a circuit board micro short circuit detection device proposed in this utility model;

[0019] Figure 3 This is a partial structural diagram of the rubber wheel of a circuit board micro short circuit detection device proposed in this utility model;

[0020] Figure 4 This is a partial structural diagram of the lead screw of a circuit board micro short circuit detection device proposed in this utility model;

[0021] Figure 5 This is a partial structural diagram of the fixing component two of the circuit board micro short circuit detection device proposed in this utility model;

[0022] Figure 6 This is a partial structural diagram of the groove in a circuit board micro short circuit detection device proposed in this utility model;

[0023] Figure 7 This is a schematic diagram of a partial structure of the clip of a circuit board micro short circuit detection device proposed in this utility model.

[0024] Legend:

[0025] 1. Platform; 2. Monitoring box; 3. Interface; 4. Connector; 5. Test line; 6. Housing; 7. Fixing mechanism; 71. Fixing post one; 72. Rotating post; 73. Rubber wheel; 74. Fixing ring one; 75. Limiting post one; 76. Fixing post two; 77. Lead screw one; 78. Limiting post two; 79. Fixing post three; 710. Rotating handle; 711. Fixing ring two; 8. Fixing component two; 81. Lead screw two; 82. Groove; 83. Fixing plate one; 84. Connecting post; 9. Probe; 10. Display screen; 11. Buckle; 12. Fixing plate two; 13. Spring; 14. Circuit board. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Example 1

[0028] Reference Figures 1-3A circuit board micro short circuit detection device includes a platform 1, a monitoring box 2 fixedly connected to the upper surface of the platform 1, an interface 3 opened inside the monitoring box 2, a display screen 10 fixedly connected inside the monitoring box 2, a connector 4 snapped into the interface 3, a test line 5 fixedly connected to one end of the connector 4, a housing 6 provided at the end of the test line 5 away from the connector 4, a fixing mechanism 7 installed inside the housing 6, the fixing mechanism 7 includes a fixing component 1 and a fixing post 1 71, the fixing post 1 71 is rotatably connected inside the housing 6, a rotating post 72 is rotatably connected inside the fixing post 1 71, a rubber wheel 73 is rotatably connected to one end of the fixing post 1 71, a fixing ring 1 74 is rotatably connected to the outside of the fixing post 1 71, the outside of the fixing ring 1 74 is rotatably connected to the inside of the housing 6, a limit post 1 75 is fixedly connected to the upper surface of the fixing ring 1 74, and a probe 9 is snapped into the inside of the fixing mechanism 7.

[0029] Specifically, platform 1 is used to place various components, monitoring box 2 is used to place detection components, interface 3 is used to connect connector 4, connector 4 is used to connect test line 5 into interface 3, test line 5 is used to transmit electrical energy, housing 6 is used to fix probe 9, and when the operation of replacing probe 9 is to be completed, it plays the role of stabilizing fixing mechanism 7. Fixing mechanism 7 is used to fix probe 9, fixing component one is used to fix various parts, fixing column one 71 is used to fix probe 9, rotating column 72 is used to stabilize fixing ring one 74 and fixing column one 71, rubber wheel 73 is used to contact probe 9 and fix probe 9, because of its material, it will not damage probe 9, display screen 10 is used to display the resistance value of components, fixing ring one 74 is used to drive fixing column one 71 to rotate, limiting column one 75 is used to limit the rotation range of fixing column one 71, thereby improving the problem of low continuous efficiency of production line operation.

[0030] Reference Figures 2-4 The fixing component includes a second fixing post 76, which is located inside the housing 6. A first screw 77 is threadedly connected inside the second fixing post 76. One end of the first screw 77 is fixedly connected to a second limiting post 78. A third fixing post 79 is rotatably connected to the outside of the first screw 77. A rotating handle 710 is fixedly connected to the other end of the first screw 77. A second fixing ring 711 is rotatably connected to the upper surface of the rotating post 72. A rubber wheel 73 is located outside the probe 9. The lower surface of the third fixing post 79 is fixed to the upper surface of the housing 6. The outside of the rotating post 72 passes through the interior of the first fixing post 71, the first fixing ring 74, and the second fixing ring 711.

[0031] Specifically, the second fixed post 76 is rotatably connected to the connecting plate on its lower surface. This connecting plate is fixedly connected to the first fixed ring 74 and is used to drive the first fixed ring 74 to move. The first lead screw 77 is used to drive the second fixed post 76 to move and is its main power source. The second limiting post 78 is used to limit the range of movement of the first lead screw 77. The third fixed post 79 is used to fix it to the outer shell 6. The rotating handle 710 is used by the operator to rotate the first lead screw 77. The second fixed ring 711 is used to limit the movement of the first fixed post 71 within its range.

[0032] Reference Figure 1 and Figure 7 The upper surface of the platform 1 is provided with a buckle 11, and a fixing plate 12 is fixedly connected to the outside of the buckle 11; a spring 13 is provided on the outside of the fixing plate 12, and the outside of the spring 13 is located inside the platform 1; a circuit board 14 is snapped onto the outside of the buckle 11.

[0033] Specifically, the buckle 11 is used to fix the circuit board 14, and the fixing plate 12 is used to fix the buckle 11. By pulling the fixing plate 12, the buckle 11 is released. The spring 13 is used to provide the rebound force. After the fixing plate 12 is released, the rebound force is used to reset the fixing plate 12.

[0034] Example 2

[0035] Reference Figures 4-5 The housing 6 has a fixing component 2 8 inside, which includes a lead screw 2 81. The lead screw 2 81 is externally threaded into the housing 6. One end of the lead screw 2 81 is rotatably connected to a connecting post 84. A fixing plate 1 83 is fixedly connected to the outside of the connecting post 84. The outside of the lead screw 2 81 passes through the inside of the housing 6. A probe 9 is snapped into the inside of the fixing plate 1 83. The probe 9 is externally fixedly connected to the lower surface of the test line 5. The outside of the fixing plate 1 83 is slidably connected to the inside of the housing 6. A groove 82 is formed inside the fixing plate 1 83. The inside of the fixing plate 1 83 is snapped into the outside of the probe 9.

[0036] Specifically, the housing 6 has a fixing component 2 8 inside, which is used to fix the probe 9. The lead screw 2 81 is used to provide power for the movement of the fixing plate 1 83. The groove 82 is used to engage the probe 9 and fix the probe 9. The fixing plate 1 83 is used to slide inside the housing 6. When the lead screw 2 81 rotates, it drives the fixing plate 1 83 to move forward, so that the fixing plate 1 83 surrounds the outline of the probe 9. The connecting post 84 is used to connect the fixing plate 1 83 and is through on both sides. When the probe 9 needs to be replaced, the lead screw 2 81 is pulled in the opposite direction to replace the probe 9. When a new probe 9 needs to be inserted, the lead screw 2 81 is screwed into the connecting post 84, and then the groove 82 is pushed to completely fit the outline of the probe 9. Then the lead screw 2 81 is continued to be screwed. The fixing plate 1 83 is through in the middle, and its position is consistent with the through position of the connecting post 84. Therefore, the lead screw 2 81 will pass through the connecting post 84, contact the probe 9, and then press the probe 9.

[0037] Working principle: When the device is needed, place the circuit board 14 on the platform 1, then open the monitoring box 2, connect the connector 4 to the interface 3, and use the probe 9 inside the housing 6 to perform resistance testing. When the probe 9 needs to be replaced, turn the rotating handle 710. The rotating handle 710 will drive the second fixed post 76 to rotate. During the rotation of the second fixed post 76, the first fixed ring 74 will rotate, and the first fixed post 71 will also rotate with the first fixed ring 74. The first fixed post 71 rotates counterclockwise, which in turn drives the rubber wheel 73. After the probe 9 is removed from the outside, the probe 9 will detach. At this time, the probe 9 can be replaced. After replacement, turn the rotating handle 710 in the opposite direction. The rotating handle 710 will drive the second fixing post 76 to rotate again. The second fixing post 76 will drive the connecting plate connected to its lower surface to move. The connecting plate is fixedly connected to the first fixing ring 74, thereby driving the first fixing ring 74 and the first fixing post 71 to rotate. The first fixing post 71 rotates clockwise at this time. When the rubber wheel 73 contacts the probe 9, adjust it slightly to the appropriate tightness to fix the probe 9.

[0038] When it is time to test the next circuit board 14, pull the second fixing plate 12 backward. The second fixing plate 12 will compress the spring 13. Then, the second fixing plate 12 will drive the buckle 11 to disengage from the outside of the circuit board 14, and the circuit board 14 can be taken out. After the circuit board 14 is placed inside the buckle 11, the second fixing plate 12 is slowly released. At the same time, the spring 13 will rebound and squeeze the second fixing plate 12. Then, the second fixing plate 12 will push the buckle 11 to fix the circuit board 14, thus fixing the circuit board 14. This device can not only quickly replace the probe 9, but also accurately position the circuit board 14, which is convenient for testing.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A circuit board micro short circuit detection device, comprising a platform (1), characterized in that: A monitoring box (2) is fixedly connected to the upper surface of the platform (1). An interface (3) is provided inside the monitoring box (2). A display screen (10) is fixedly connected inside the monitoring box (2). A connector (4) is snapped into the interface (3). A test line (5) is fixedly connected to one end of the connector (4). A housing (6) is provided at the end of the test line (5) away from the connector (4). A fixing mechanism (7) is installed inside the housing (6). The fixing mechanism (7) includes a fixing component and a fixing column (71). The fixing post (71) is rotatably connected to the inside of the outer shell (6). The inside of the fixing post (71) is rotatably connected to a rotating post (72). One end of the fixing post (71) is rotatably connected to a rubber wheel (73). The outside of the fixing post (71) is rotatably connected to a fixing ring (74). The outside of the fixing ring (74) is rotatably connected to the inside of the outer shell (6). The upper surface of the fixing ring (74) is fixedly connected to a limiting post (75). The inside of the fixing mechanism (7) is engaged with a probe (9).

2. The circuit board micro short circuit detection device according to claim 1, characterized in that: The fixing component includes a fixing post 2 (76), which is located inside the outer shell (6). The fixing post 2 (76) is internally threaded with a lead screw 1 (77). One end of the lead screw 1 (77) is fixedly connected to a limit post 2 (78). The outside of the lead screw 1 (77) is rotatably connected to a fixing post 3 (79). The other end of the lead screw 1 (77) is fixedly connected to a rotating handle (710). The upper surface of the rotating post (72) is rotatably connected to a fixing ring 2 (711). The rubber wheel (73) is located outside the probe (9).

3. The circuit board micro short circuit detection device according to claim 2, characterized in that: The housing (6) is provided with a fixing component two (8), which includes a lead screw two (81). The lead screw two (81) is externally threaded into the housing (6). One end of the lead screw two (81) is rotatably connected to a connecting post (84). The connecting post (84) is externally fixedly connected to a fixing plate one (83). The lead screw two (81) extends through the housing (6).

4. The circuit board micro short circuit detection device according to claim 3, characterized in that: The probe (9) is snapped into the inside of the fixing plate (83), the probe (9) is fixedly connected to the lower surface of the test line (5), and the outside of the fixing plate (83) is slidably connected to the inside of the outer shell (6).

5. The circuit board micro short circuit detection device according to claim 4, characterized in that: The upper surface of the platform (1) is provided with a buckle (11), and a fixing plate (12) is fixedly connected to the outside of the buckle (11).

6. The circuit board micro short circuit detection device according to claim 5, characterized in that: A spring (13) is provided on the outside of the fixing plate 2 (12), and the outside of the spring (13) is provided inside the platform (1). A circuit board (14) is snapped onto the outside of the buckle (11).

7. The circuit board micro short circuit detection device according to claim 2, characterized in that: The lower surface of the fixed column three (79) is fixed to the upper surface of the outer shell (6), and the outside of the rotating column (72) penetrates the interior of the fixed column one (71), the fixed ring one (74) and the fixed ring two (711).

8. The circuit board micro short circuit detection device according to claim 3, characterized in that: The fixing plate (83) has a groove (82) inside, and the inside of the fixing plate (83) is engaged with the outside of the probe (9).

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