Circuit test board for multi-specification flat cable

Abstract

The utility model discloses a circuit test board of multi -specification wire harness, including test board body and movable cavity, test board body surface is provided with six groups of mould groove, respectively corresponding 4pin, 6pin, 8pin, 10pin and 12pin specification's wire harness circuit, the inner wall of mould groove all has the patch type pressure sensor that bonds, test board body front end is fixed with servo motor, servo motor output shaft fixedly connected with threaded rod, threaded rod outside is screwed with threaded seat, threaded seat top fixedly connected with the cylinder, cylinder piston rod fixedly connected with the pressure head. The utility model discloses through being provided with test board body, can according to different pin wire harness specification at the PLC control panel place selection corresponding button, realizes automatic positioning and quick plug -in test, and the wire harness type covers 4pin, 6pin, 8pin, 10pin and 12pin, and the adaptation range is wide, avoids frequently replacing test board to improve the detection efficiency, satisfies the detection demand of multi -batch, various circuit wire harness.

Description

Technical Field

[0001] This utility model relates to the field of circuit test board technology, specifically to a circuit test board with multi-specification ribbon cables. Background Technology

[0002] Currently, common ribbon cable test boards are usually designed for a fixed number of pins. For example, test slots specifically designed for 4-pin, 6-pin, or 8-pin ribbon cables can only test the corresponding specifications of the ribbon cables and are not universal. Therefore, on a production line, if multiple specifications of ribbon cables need to be tested, multiple test boards with different pin counts must be prepared, and testers also need to frequently change different test fixtures.

[0003] This type of test board has several obvious problems. First, it requires a large number of units, is troublesome to switch, takes up space, and is prone to errors. Second, the ribbon cable connection is generally done manually. Testers need to manually insert the ribbon cable into the test slot and connect the pins. Improper alignment can easily cause damage to the pins or poor contact. Especially when batch testing is required and operations are frequent, the manual insertion and removal process is not only inefficient but also easy to cause fatigue and affect the stability of the test.

[0004] Therefore, multi-specification cable circuit test boards are used to replace the current single-specification, cumbersome, and inefficient test boards, thus solving the above-mentioned technical defects. Utility Model Content

[0005] The purpose of this utility model is to provide a circuit test board with multiple specifications of ribbon cables to solve the problems of single test board specifications, cumbersome operation and low efficiency mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a circuit test board for multi-specification ribbon cables, comprising a test board body and a movable cavity. The surface of the test board body is provided with six sets of mold slots, corresponding to 4-pin, 6-pin, 8-pin, 10-pin, and 12-pin ribbon cable circuits, respectively. Surface-mount pressure sensors are adhered to the inner walls of each mold slot. A servo motor is fixed to the front end of the test board body. A threaded rod is fixedly connected to the output shaft of the servo motor. A threaded seat is screwed onto the outside of the threaded rod. A cylinder is fixedly connected to the top of the threaded seat. A pressure head is fixedly connected to the piston rod of the cylinder. A movable cavity is provided between the test board body and the mold slots. A test connector corresponding to the mold slot is movably assembled in the movable cavity. A spring is fixedly connected to the back of the test board body of the test connector.

[0007] As a further technical solution of this utility model, two sets of springs are installed behind the test connector, and the pin specifications of the test connector and the mold slot are matched.

[0008] As a further technical solution of this utility model, partitions are processed on both sides of the mold groove, and rubber feet are glued to the four corners of the bottom of the test plate body.

[0009] As a further technical solution of this utility model, a dust cover is hinged to the front end of the test board body, and a protrusion is processed on the inner wall of the dust cover, the position of the protrusion of the dust cover matching the spacer.

[0010] As a further technical solution of this utility model, the threaded rod is movably assembled at the rear of the test plate body, and a fixing rod fixed inside the test plate body is provided at the front of the threaded rod. The fixing rod is arranged along the length direction of the threaded rod and the threaded seat is sleeved on the outside of the fixing rod and slides.

[0011] As a further technical solution of this utility model, a running indicator light matching the number of pins is provided on the lower left of the mold slot, and a PLC control panel is provided on the right side of the test board body, with a voice broadcaster provided on the PLC control panel.

[0012] As a further technical solution of this utility model, the PLC control panel is also provided with six sets of buttons, each of which corresponds to a mold slot.

[0013] As a further technical solution of this utility model, a switch is provided at the front end of the PLC control panel, a tester connector is provided on the left side of the test board body, the test connectors are electrically connected to the tester connector, and the tester connector is connected to an external test instrument.

[0014] Compared with the prior art, the beneficial effects of this utility model are: by setting up a test board body, mold groove, test connector, servo motor, threaded rod, threaded seat, pressure head, and movable cavity, the corresponding button can be selected on the PLC control panel according to different pin cable specifications to realize automatic positioning and quick plug-in testing. The cable types cover 4pin, 6pin, 8pin, 10pin and 12pin, with a wide range of compatibility, avoiding frequent replacement of test boards, thereby improving testing efficiency and meeting the testing needs of multiple batches and multiple types of circuit cables;

[0015] Equipped with a surface-mount pressure sensor, pressure head, spring, voice announcer, and running indicator light, the pressure sensor triggers an action signal when the cable is inserted into the mold slot, automatically starting the pressure head to complete the insertion action. After the test is completed, the spring automatically resets and disconnects the connection, and the test results are fed back through the indicator light and announcer. The entire process does not require manual insertion, removal, or reading, avoiding human fatigue and misinsertion caused by repetitive labor during long-term testing, simplifying the operation process, making circuit testing more efficient, results more intuitive, and operation more user-friendly. Attached Figure Description

[0016] Figure 1This is a top view of the structure of this utility model;

[0017] Figure 2 This is a bottom view of the test connector structure of this utility model;

[0018] Figure 3 This is a front view structural diagram of the test connector of this utility model;

[0019] Figure 4 This is a bottom view schematic diagram of the threaded rod structure of this utility model.

[0020] In the diagram: 1. Test board body; 2. Cylinder; 3. Threaded seat; 4. Threaded rod; 5. Fixing rod; 6. Test connector; 7. Spacer; 8. Mold groove; 9. Surface mount pressure sensor; 10. Tester connector; 11. Run indicator light; 12. Dust cover; 13. Switch; 14. Voice announcer; 15. Button; 16. PLC control panel; 17. Servo motor; 18. Movable cavity; 19. Spring; 20. Rubber foot; 21. Pressure head. 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 Figure 1-4This utility model provides an embodiment of a circuit test board for multi-specification ribbon cables, comprising a test board body 1 and a movable cavity 18. The surface of the test board body 1 is provided with six sets of mold slots 8, corresponding to 4-pin, 6-pin, 8-pin, 10-pin, and 12-pin ribbon cable circuits, respectively. A servo motor 17, model MHMD042G1U, is fixedly attached to the front end of the test board body 1. Its output shaft is fixedly connected to a threaded rod 4, and a threaded seat 3 is screwed onto the outside of the threaded rod 4. A cylinder 2, model SMC, is fixedly connected to the top of the threaded seat 3. CD85N16-30-B, stroke 30mm, cylinder 2 piston rod fixedly connected to pressure head 21, a movable cavity 18 is provided between test plate body 1 and mold groove 8, test connector 6 corresponding to mold groove 8 is movably assembled in movable cavity 18, test connector type 6 is FPC / FFC dedicated socket, test connector 6 is fixedly connected to the back of test plate body 1 with spring 19, spring 19 is installed behind test connector 6 with two sets, test connector 6 and mold groove 8 pin specifications match, threaded rod 4 is movably assembled at the rear of test plate body 1, fixed rod 5 is provided at the front of threaded rod 4 fixed inside test plate body 1, fixed rod 5 is arranged along the length of threaded rod 4 and threaded seat 3 is sleeved on the outside of fixed rod 5 to eliminate the influence of axial force on the movement stability of threaded seat 3, threaded rod 4 thread is standard trapezoidal thread, its thread helix angle is less than equivalent friction angle, this thread structure naturally has self-locking characteristics, threaded rod 4 works in a relatively sealed environment, while being lubricated, and is regularly maintained by staff;

[0023] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the test board body 1 is equipped with five sets of pin specification ribbon cable test positions. When it is necessary to test different specifications of pin ribbon cables, press the corresponding button 15 at the PLC control panel 16. The servo motor 17 drives the threaded rod 4 to rotate, and the threaded seat 3 moves linearly outside the threaded rod 4, driving the cylinder 2 to move to the mold groove 8 at the corresponding position. This achieves fast and efficient testing, with multiple specifications available, and eliminates the need to use different test boards for testing.

[0024] A PLC control panel 16 is located on the right side of the test board body 1. A switch 13 is located at the front end of the PLC control panel 16. The switch 13 is not located on the surface of the PLC control panel 16 to reduce the risk of accidental activation. A tester connector 10 is located on the left side of the test board body 1. Test connectors 6 are electrically connected to the tester connector 10. The tester connector 10 is connected to an external test instrument. Defective products are eliminated through test software. Surface mount pressure sensors 9, model FSR406, are glued to the inner wall of the mold groove 8. These sensors, through flexible thin-film force-sensitive resistors, sense whether the ribbon cable is placed in place.

[0025] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the circuit pin cable is placed in the mold slot 8. When the surface mount pressure sensor 9 senses the pressure applied by the circuit pin cable, the system automatically starts the cylinder 2. The cylinder 2 then pushes the test connector 6 out of the movable cavity 18 through the pressure head 21, so that the pin hole in the test connector 6 can be quickly inserted with the circuit pin cable and the pin circuit can be detected. The automatic insertion and retraction design eliminates the need for manual insertion and reduces the fatigue of batch testing.

[0026] The lower left of the mold slot 8 is equipped with a running indicator light 11 that matches the number of pins. The light turns green when the test is successful and turns off when the test is unsuccessful. The PLC control panel 16 is equipped with a voice broadcaster 14, which is a GD-MT05-5V voice module that can pre-record broadcast files. The PLC control panel 16 is also equipped with six sets of buttons 15, which correspond one-to-one with the mold slot 8.

[0027] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, after the test connector 6 is plugged into the pin cable, if it passes the test, the running indicator 11 will light up completely, the cylinder 2 will automatically drive the pressure head 21 to retract, and the test connector 6 will spring back and disengage from the circuit pin cable under the action of the spring 19. If a pin fails, the running indicator 11 at the corresponding point will light up less or not at all, and the pressure head 21 will not spring back, allowing time to observe the unlit groups of lights at the running indicator 11 for recording. During the test, the voice broadcaster 14 will simultaneously broadcast the pass and fail information, making it easy for the test personnel to quickly observe and receive information. The operation is simple and convenient.

[0028] The mold groove 8 has partitions 7 on both sides, and rubber feet 20 are glued to the four corners of the bottom of the test plate body 1. The front end of the test plate body 1 is hinged with a dust cover 12. The dust cover 12 is a transparent cover made of PC material. The inner wall of the dust cover 12 has protrusions. The position of the protrusions of the dust cover 12 matches the partitions 7, which facilitates the tightness of the connection when the cover is closed.

[0029] Specifically, such as Figure 1 and Figure 2 As shown, a dust cover 12 is hinged to the front end of the test board body 1. The dust cover 12 is opened before testing and closed after testing. It is used to protect the surface of the test board body 1 and the test connector 6 in the active cavity 18 to prevent moisture or dust from seeping in and causing contact.

[0030] Working principle: Select the current cable specification via PLC control panel 16, press the corresponding button 15 on the panel, start servo motor 17, driving the threaded rod 4 at the output end to rotate. Since the threaded rod 4 has a standard trapezoidal thread structure, it has a natural self-locking characteristic, and the externally screwed threaded seat 3 slides on the fixed rod 5, causing the threaded seat 3 to move cylinder 2 to the rear of the current mold slot 8. The operator inserts the cable to be tested into the mold slot 8. The surface-mount pressure sensor 9 set on the inner wall of the mold slot 8 senses the pressure applied by the cable. The surface-mount pressure sensor 9 can identify whether the cable is pressed in place. When the surface-mount pressure sensor 9 confirms that the cable is placed, the control system automatically triggers cylinder 2. The piston rod of cylinder 2 drives the pressure head 21 to push the test connector 6 in the movable cavity 18 forward, realizing the pin... The test connector 6 is electrically connected to the tester connector 10 via a wire and then to an external tester to initiate the electrical testing process. The test software determines the continuity of each set of pins. During the test, the running indicator 11 on the lower left of the mold slot 8 displays the test status. If the connection is qualified, the running indicator 11 is fully lit, the control system commands the cylinder 2 to return to its original position, the pressure head 21 moves backward, and the test connector 6 rebounds and disengages from the ribbon cable under the action of the spring 19. The voice announcer 14 announces "qualified". If there is an open circuit or abnormality, the corresponding indicator light is off or partially extinguished, and "unqualified" is announced. The pressure head does not immediately return to its original position, retaining the connection status for manual verification, which is convenient for manual recording and processing.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A circuit test board for multi-specification ribbon cables, comprising a test board body (1) and a movable cavity (18), characterized in that: The test board body (1) has six sets of mold slots (8) on its surface, corresponding to 4pin, 6pin, 8pin, 10pin and 12pin ribbon cable circuits respectively. The inner wall of each mold slot (8) is glued with a surface-mount pressure sensor (9). A servo motor (17) is fixed at the front end of the test board body (1). The output shaft of the servo motor (17) is fixedly connected to a threaded rod (4). A threaded seat (3) is screwed to the outside of the threaded rod (4). A cylinder (2) is fixedly connected to the top of the threaded seat (3). A pressure head (21) is fixedly connected to the piston rod of the cylinder (2). A movable cavity (18) is provided between the test board body (1) and the mold slot (8). A test connector (6) corresponding to the mold slot (8) is movably assembled in the movable cavity (18). A spring (19) is fixedly connected to the back of the test board body (1).

2. The circuit test board with multi-specification ribbon cables according to claim 1, characterized in that: Two sets of springs (19) are installed behind the test connector (6), and the pin specifications of the test connector (6) and the mold groove (8) are matched.

3. The circuit test board with multi-specification ribbon cables according to claim 1, characterized in that: The mold groove (8) has partitions (7) on both sides, and the test plate body (1) has rubber feet (20) glued to the four corners of the bottom.

4. The circuit test board with multi-specification ribbon cables according to claim 1, characterized in that: The test board body (1) has a dust cover (12) hinged to its front end. The inner wall of the dust cover (12) has protrusions, and the position of the protrusions of the dust cover (12) matches that of the partition (7).

5. The circuit test board with multi-specification ribbon cables according to claim 1, characterized in that: The threaded rod (4) is movably assembled at the rear of the test plate body (1). A fixing rod (5) is fixed inside the test plate body (1) at the front of the threaded rod (4). The fixing rod (5) is arranged along the length of the threaded rod (4) and the threaded seat (3) is sleeved on the outside of the fixing rod (5) and slides.

6. The circuit test board with multi-specification ribbon cables according to claim 1, characterized in that: The mold slot (8) is provided with a running indicator (11) matching the number of pins at the lower left. The test board body (1) is provided with a PLC control panel (16) on the right side. The PLC control panel (16) is provided with a voice broadcaster (14).

7. The circuit test board with multi-specification ribbon cables according to claim 6, characterized in that: The PLC control panel (16) is also equipped with six sets of buttons (15), each of which corresponds to a mold slot (8).

8. The circuit test board with multi-specification ribbon cables according to claim 6, characterized in that: The PLC control panel (16) is equipped with a switch (13) at the front end. The test board body (1) is equipped with a tester connector (10) on the left side. The test connector (6) is electrically connected to the tester connector (10). The tester connector (10) is connected to an external test instrument.

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