A flexible circuit board cyclic bending test device

Abstract

The utility model belongs to the technical field of electronic component performance test, specifically is a kind of flexible circuit board cycle bending test device, including base, two drivers are installed in base top;The output shaft of driver is fixed with rotating plate, the top of base is fixed with two first support frame, the top of first support frame is fixed with fixed plate, two groups of slide posts are slidably connected in the middle of rotating plate and fixed plate, the bottom of slide post is fixed with first limit piece, the top of multiple slide posts is fixed with pressing plate.The utility model provides a kind of flexible circuit board cycle bending test device, and the quick clamping of flexible circuit board is realized by the elasticity of elastic rope, and the friction force when fixing is increased by collocating rubber sheet, the problem that traditional clamp needs to use adhesive tape and other materials to fix flexible circuit board, leading to complicated fixing, inconvenient disassembly is solved, simultaneously by handle, the stable effect of holding pressing plate can be increased.

Description

Technical Field

[0001] This utility model belongs to the field of electronic component performance testing technology, specifically a flexible circuit board cyclic bending test device. Background Technology

[0002] Flexible circuit boards are printed circuit boards that use flexible insulating substrates (such as polyimide PI or polyester film PET) as carriers, and form conductive lines on the substrates through processes such as etching and lamination. They can be bent, folded, and twisted according to usage requirements.

[0003] The core advantage of flexible printed circuit boards (FPCs) is their ability to be repeatedly deformed. However, long-term cyclic bending can easily lead to failures such as circuit breakage, substrate aging, and solder joint detachment. A commonly used cyclic bending test device is a specialized testing equipment that simulates the repeated bending scenarios of FPCs in actual use and evaluates their fatigue resistance, mechanical reliability, and service life through a standardized and quantified testing process.

[0004] However, most of the flexible circuit board bending test devices commonly used in the industry currently use adhesive tape to fix the circuit board. This fixing method is cumbersome and requires a lot of time to complete the steps of pasting, removing and cleaning the tape residue. The tape is also prone to loosening due to the tensile force during the bending process. Therefore, a flexible circuit board cyclic bending test device is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art and solve at least one of the technical problems mentioned in the background art, this utility model proposes a flexible circuit board cyclic bending test device.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: The flexible circuit board cyclic bending test device of this utility model includes a base, two drivers are installed on the top of the base; a rotating plate is fixedly connected to the output shaft of the driver; two first support frames are fixedly connected to the top of the base; a fixed plate is fixedly connected to the top of the first support frames; two sets of sliding columns are slidably connected in the middle of the rotating plate and the fixed plate; a first limiting member is fixedly connected to the bottom of the sliding column; a pressure plate is fixedly connected to the top of multiple sliding columns; multiple second support frames are fixedly connected to the bottom of the rotating plate and the fixed plate; the second support frames are set close to the sliding column; an elastic rope is fixedly connected to the inner wall of the second support frame; the elastic rope is fixedly connected to the inner wall of the sliding column; a handle is fixedly connected to the top of the two pressure plates; and a rubber sheet is fixedly connected to the bottom of the two pressure plates.

[0007] Preferably, a connecting block is fixed to the bottom of one of the pressure plates, the connecting block is through the middle of the rotating plate, an elastic cloth is fixed to the bottom of the connecting block, a positioning post is provided at the end of the elastic cloth, a plurality of support plates are fixed to the top of the base, the plurality of support plates are provided near the rotating plate, and a second limiting member is fixed to the top of the support plate, the second limiting member is a U-shaped structure.

[0008] Preferably, one of the pressure plate sidewalls is provided with two third support frames, which are fixed to the pressure plate sidewall by bolts. A top column is fixed to the end of the third support frame. The third support frame is provided on the side close to the fixed plate, and the top column is located between the rotating plate and the fixed plate.

[0009] Preferably, the pressure plate has two placement slots in the middle.

[0010] Preferably, a torsion spring is installed on the side wall of the second limiting member, and a closing plate is fixedly connected to the middle of the torsion spring. By flipping or closing the torsion spring, the positioning post can be removed or limited.

[0011] Preferably, a rubber pad is fixed to the outer wall of the positioning post.

[0012] The beneficial effects of this utility model are: This utility model provides a flexible circuit board cyclic bending test device, which achieves rapid clamping of the flexible circuit board through the elastic force of the elastic rope. The rubber sheet increases the friction during fixation, solving the problem that traditional clamps require materials such as tape to fix the flexible circuit board, which leads to cumbersome fixation and inconvenient disassembly. At the same time, the handle can increase the stability of holding the pressure plate.

[0013] This invention provides a flexible circuit board cyclic bending test device. Through the cooperation of elastic cloth, positioning column and second limiting member, a continuous tension is applied to the pressure plate, which further solves the problem that the circuit board is easy to loosen and affect the test accuracy during frequent bending. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0015] In the attached diagram: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the fixing plate structure in this utility model; Figure 3 for Figure 2 Enlarged view of point A; Figure 4 This is a schematic diagram of the rotating plate structure in this utility model; Figure 5 This is a schematic diagram of the elastic fabric structure in this utility model.

[0016] Legend: 1. Base; 11. Driver; 12. Rotating plate; 13. First support frame; 14. Fixing plate; 15. Sliding column; 16. First limiting member; 17. Pressure plate; 18. Second support frame; 19. Elastic rope; 110. Handle; 111. Rubber sheet; 2. Connecting block; 21. Elastic cloth; 22. Positioning column; 23. Support plate; 24. Second limiting member; 3. Third support frame; 31. Bolt; 32. Top column; 4. Placement slot; 5. Torsion spring; 51. Closing plate. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Specific implementation examples are given below.

[0019] like Figure 1-5As shown, a flexible circuit board cyclic bending test device includes a base 1, with two drivers 11 mounted on the top of the base 1; a rotating plate 12 is fixedly connected to the output shaft of each driver 11; two first support frames 13 are fixedly connected to the top of the base 1, and a fixing plate 14 is fixedly connected to the top of each first support frame 13; two sets of sliding columns 15 are slidably connected between the rotating plate 12 and the fixing plate 14; a first limiting member 16 is fixedly connected to the bottom of each sliding column 15; pressure plates 17 are fixedly connected to the top of each sliding column 15; multiple second support frames 18 are fixedly connected to the bottom of the rotating plate 12 and the fixing plate 14; the second support frames 18 are positioned close to the sliding columns 15; an elastic rope 19 is fixedly connected to the inner wall of each second support frame 18; the elastic rope 19 is fixedly connected to the inner wall of each sliding column 15; handles 110 are fixedly connected to the top of each of the two pressure plates 17; and rubber sheets 111 are fixedly connected to the bottom of each of the two pressure plates 17. Pull the handle 110 to lift the pressure plate 17, and place the flexible circuit board to be tested under the rubber sheet 111 at the bottom of the two pressure plates 17. After releasing the handle 110, the elastic rope 19 on the inner wall of the second support frame 18 will pull the slide column 15 through the elastic force, causing the slide column 15 to move the pressure plate 17 down. The rubber sheet 111 is used to clamp and fix the flexible circuit board. Then, the driver 11 at the top of the base 1 is activated. The output shaft of the driver 11 drives the rotating plate 12 to rotate back and forth, thereby driving the fixed flexible circuit board to perform a cyclic bending action in sync, completing the test. This step achieves rapid clamping of the flexible circuit board through the elastic force of the elastic rope 19. The rubber sheet 111 increases the friction during fixation, solving the problem that traditional clamps require the use of materials such as tape to fix the flexible circuit board, which leads to cumbersome fixation and inconvenient disassembly. At the same time, the handle 110 can increase the stability of holding the pressure plate 17.

[0020] like Figure 1-5As shown, a connecting block 2 is fixedly connected to the bottom of one of the pressure plates 17. The connecting block 2 is through-hole in the middle of the rotating plate 12. An elastic cloth 21 is fixedly connected to the bottom of the connecting block 2. A positioning post 22 is provided at the end of the elastic cloth 21. Several support plates 23 are fixedly connected to the top of the base 1. The support plates 23 are arranged near the rotating plate 12. A second limiting member 24 is fixedly connected to the top of the support plate 23. The second limiting member 24 has a U-shaped structure. After fixing the flexible circuit board, the positioning post 22 at the end of the elastic cloth 21 at the bottom of the connecting block 2 is placed on the second limiting member at the top of the support plate 23. 24 Inside; When the rotating plate 12 flips back and forth, it will drive the pressure plate 17 to move synchronously. At this time, the elastic cloth 21 will be pulled, the positioning post 22 will be lifted and stuck into the inner wall of the second limiting member 24. The elastic tension of the elastic cloth 21 will continuously pull the pressure plate 17, so that the rubber sheet 111 at the bottom of the pressure plate 17 will always be tightly attached to the flexible circuit board. This step utilizes the linkage effect when the rotating plate 12 flips, and through the cooperation of the elastic cloth 21, the positioning post 22, and the second limiting member 24, continuously applies tension to the pressure plate 17, further solving the problem that the circuit board is easy to loosen and affect the test accuracy during frequent bending.

[0021] like Figure 1-5 As shown, two third support frames 3 are provided on the side wall of one of the pressure plates 17. The third support frames 3 are fixed to the side wall of the pressure plate 17 by bolts 31. A top column 32 is fixed to the end of the third support frame 3. The third support frame 3 is set on the side closer to the fixed plate 14. The top column 32 is set between the rotating plate 12 and the fixed plate 14. The third support frame 3 is fixed to the side wall of one of the pressure plates 17 by bolts 31, so that the top column 32 at the end of the third support frame 3 is positioned between the rotating plate 12 and the fixed plate 14. When the flexible circuit board bends with the rotating plate 12, the top column 32 will block the bending area of ​​the circuit board and limit its maximum bending range. This step allows the installation position to be adjusted according to the test requirements through the top column 32, controlling the degree of bending of the flexible circuit board and improving the controllability of the test.

[0022] like Figure 1-5 As shown, the pressure plate 17 has two placement slots 4 in the middle. By using the two placement slots 4 in the middle of the pressure plate 17, the edge of the circuit board can be operated directly through the placement slots 4 when fixing or removing the flexible circuit board. This step simplifies the process of picking up and putting down the flexible circuit board through the design of the placement slots 4, and solves the problem that the edge of the circuit board is blocked and difficult to operate after the pressure plate 17 is clamped.

[0023] like Figure 1-5As shown, a torsion spring 5 is installed on the side wall of the second limiting member 24. A closing plate 51 is fixedly connected to the middle of the torsion spring 5. By flipping or closing the torsion spring 5, the positioning post 22 can be removed or limited. When the positioning post 22 is placed inside the second limiting member 24, the torsion spring 5 on the side wall of the second limiting member 24 will drive the closing plate 51 to automatically flip, closing the opening of the second limiting member 24 and limiting the positioning post 22. When it is necessary to remove the positioning post 22, the closing plate 51 is manually flipped, the torsion spring 5 is compressed, and the positioning post 22 can be removed from the second limiting member 24. This step, with the cooperation of the torsion spring 5 and the closing plate 51, realizes the quick locking and unlocking of the positioning post 22, solving the problem that the positioning post 22 is easy to fall out of the second limiting member 24 or the operation is cumbersome.

[0024] like Figure 1-5 As shown, a rubber pad is fixed to the outer wall of the positioning post 22. When the positioning post 22 is inserted into the inner wall of the second limiting member 24, the rubber pad fixed to the outer wall of the positioning post 22 will increase the contact friction between the positioning post 22 and the second limiting member 24. This step improves the contact stability between the positioning post 22 and the second limiting member 24 through the rubber pad, and solves the problem that the positioning post 22 is easy to shake in the second limiting member 24 and affects the tensile stability of the elastic cloth 21.

[0025] Working principle: First, pull the handle 110 to lift the pressure plate 17, and place the flexible circuit board to be tested under the rubber sheet 111 at the bottom of the two pressure plates 17. After releasing the handle 110, the elastic rope 19 on the inner wall of the second support frame 18 will pull the slide column 15 through the elastic force, causing the slide column 15 to move the pressure plate 17 down, and use the rubber sheet 111 to clamp and fix the flexible circuit board. Then, start the driver 11 on the top of the base 1. The output shaft of the driver 11 drives the rotating plate 12 to rotate back and forth, thereby moving the fixed flexible circuit board. The circuit board undergoes a synchronous cyclic bending motion to complete the test. After fixing the flexible circuit board, the positioning post 22 at the end of the elastic cloth 21 at the bottom of the connecting block 2 is placed inside the second limiting member 24 at the top of the support plate 23. When the rotating plate 12 flips back and forth, it will drive the pressure plate 17 to move synchronously. At this time, the elastic cloth 21 will be pulled, the positioning post 22 will be lifted and inserted into the inner wall of the second limiting member 24, and the elastic tension of the elastic cloth 21 will continue to pull the pressure plate 17, so that the rubber sheet 111 at the bottom of the pressure plate 17 is always tightly attached. The flexible circuit board is fixed to the side wall of one of the pressure plates 17 by bolts 31, so that the top post 32 at the end of the third support frame 3 is positioned between the rotating plate 12 and the fixed plate 14. When the flexible circuit board bends with the rotating plate 12, the top post 32 will block the bending area of ​​the circuit board and limit its maximum bending range. Using the two placement slots 4 opened in the middle of the pressure plate 17, the edge of the circuit board can be directly operated through the placement slots 4 when fixing or removing the flexible circuit board. When the positioning post 22 is placed... After the second limiting member 24 is inserted into the inner side, the torsion spring 5 on the side wall of the second limiting member 24 will drive the closing plate 51 to automatically flip and close the opening of the second limiting member 24, thereby limiting the positioning post 22. When the positioning post 22 needs to be removed, the closing plate 51 is manually flipped, the torsion spring 5 is compressed, and the positioning post 22 can be removed from the second limiting member 24. The rubber pad fixed to the outer wall of the positioning post 22 will increase the contact friction between the positioning post 22 and the second limiting member 24 when the positioning post 22 is inserted into the inner wall of the second limiting member 24.

[0026] 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 flexible circuit board cyclic bending test device, comprising a base (1), wherein two drivers (11) are mounted on the top of the base (1); characterized in that: The output shaft of the driver (11) is fixedly connected to a rotating plate (12). The top of the base (1) is fixedly connected to two first support frames (13). The top of the first support frames (13) is fixedly connected to a fixing plate (14). The rotating plate (12) and the fixing plate (14) are slidably connected to two sets of sliding columns (15). The bottom of the sliding column (15) is fixedly connected to a first limiting member (16). The top of the multiple sliding columns (15) is fixedly connected to a pressure plate (17). The bottom of the rotating plate (12) and the fixing plate (14) is fixedly connected to multiple second support frames (18). The second support frames (18) are located near the sliding column (15). The inner wall of the second support frame (18) is fixedly connected to an elastic rope (19). The elastic rope (19) is fixedly connected to the inner wall of the sliding column (15). The top of the two pressure plates (17) is fixedly connected to a handle (110). The bottom of the two pressure plates (17) is fixedly connected to a rubber sheet (111).

2. The flexible circuit board cyclic bending test device as described in claim 1, characterized in that: A connecting block (2) is fixed to the bottom of one of the pressure plates (17). The connecting block (2) is through the middle of the rotating plate (12). An elastic cloth (21) is fixed to the bottom of the connecting block (2). A positioning post (22) is provided at the end of the elastic cloth (21). Several support plates (23) are fixed to the top of the base (1). The several support plates (23) are provided on the side close to the rotating plate (12). A second limiting member (24) is fixed to the top of the support plate (23). The second limiting member (24) is a U-shaped structure.

3. The flexible circuit board cyclic bending test device as described in claim 1, characterized in that: Two third support frames (3) are provided on the side wall of the pressure plate (17). The third support frames (3) are fixed to the side wall of the pressure plate (17) by bolts (31). A top column (32) is fixed to the end of the third support frame (3). The third support frame (3) is provided on the side close to the fixed plate (14). The top column (32) is located between the rotating plate (12) and the fixed plate (14).

4. The flexible circuit board cyclic bending test device as described in claim 1, characterized in that: Two placement slots (4) are provided in the middle of the pressure plate (17).

5. The flexible circuit board cyclic bending test device as described in claim 2, characterized in that: The second limiting member (24) has a torsion spring (5) installed on its side wall. A closing plate (51) is fixedly connected to the middle of the torsion spring (5). By flipping or closing the torsion spring (5), the positioning post (22) can be removed or limited.

6. The flexible circuit board cyclic bending test device as described in claim 2, characterized in that: A rubber pad is fixed to the outer wall of the positioning post (22).

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