A flexible circuit board bending resistance testing device

Abstract

The utility model discloses a kind of flexible circuit board bending resistance testing devices, including base and circular frame, control panel is installed on circular frame, first clamping piece, second clamping piece are equipped in circular frame, for the fixation of flexible circuit board, test part and adjusting part are equipped on circular frame, test part, test part includes the arc-shaped seat rotationally equipped in the inner wall of circular frame, arc-shaped seat is connected with second clamping piece, adjusting part, adjusting part includes the fixed base installed on circular frame, slidingly connected with horizontal shift rod in fixed base, horizontal shift rod is connected with first clamping piece.The utility model drives flexible circuit board reciprocating bending in the inner wall of circular frame by test part, bending range is wide, improve the bending resistance test effect of flexible circuit board, adjusting part can adjust the spacing between first clamping piece and second clamping piece, the bending resistance of different size flexible circuit board can be tested, and the scope of application is wide.

Description

Technical Field

[0001] This utility model belongs to the field of bending resistance testing technology, and in particular relates to a bending resistance testing device for flexible circuit boards. Background Technology

[0002] Flexible printed circuit boards (FPCBs) are printed circuit boards made from flexible substrates, characterized by their bendability and foldability. They are primarily used in applications requiring repeated bending or in confined spaces, such as mobile phone hinges, automotive electronics, and medical devices. After the FPCBs are manufactured, their bending resistance performance needs to be tested using a bending resistance testing device.

[0003] Existing flexible circuit board bending resistance testing devices use two sets of clamps to fix both ends of the flexible circuit board. One clamp drives the flexible circuit board to move up and down reciprocally via a drive source to test its bending resistance. However, the reciprocating motion trajectory is limited, the bending angle of the flexible circuit board is limited, and the bending range is small, resulting in poor testing performance for the flexible circuit board's bending resistance. Therefore, based on actual usage, we have improved the aforementioned existing technology. Utility Model Content

[0004] This invention overcomes the shortcomings of the prior art by providing a flexible circuit board bending resistance testing device to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a flexible circuit board bending resistance testing device, including a base and a circular frame, a control panel is installed on the circular frame, and a first clamping member and a second clamping member are provided inside the circular frame for fixing the flexible circuit board, and a testing part and an adjustment part are provided on the circular frame. The testing unit includes an arc-shaped seat that is rotatably disposed on the inner wall of a circular frame, and the arc-shaped seat is connected to a second clamping member; The adjustment part includes a fixed seat mounted on a circular frame, a horizontal sliding rod slidably connected inside the fixed seat, and the horizontal sliding rod is connected to the first clamping member.

[0006] In a preferred embodiment of this utility model, both the first clamping member and the second clamping member are threadedly connected to an adjusting screw. The adjusting screw is provided with a lower pressure plate. The lower pressure plate, the first clamping member, and the second clamping member are all provided with anti-slip pads. The open ends of the first clamping member and the second clamping member are provided with two sets of rotatably arranged guide rollers.

[0007] In a preferred embodiment of the present invention, the testing unit further includes a motor fixedly connected to the arc-shaped base, the output end of the motor is connected to a drive shaft, and a gear is fixedly connected to the drive shaft.

[0008] In a preferred embodiment of this utility model, the open end of the arc-shaped seat faces the inner wall of the circular frame, and the inner wall of the circular frame is provided with multiple sets of meshing grooves, each set of meshing grooves being meshed with a gear.

[0009] In a preferred embodiment of this utility model, the inner wall of the circular frame is provided with two sets of arc-shaped grooves, and the outer wall of the opening end of the arc-shaped seat is fixed with two sets of T-shaped blocks, which are rotatably disposed in the arc-shaped grooves.

[0010] In a preferred embodiment of the present invention, the adjusting part further includes an inner cylinder fixedly connected to the inner wall of the fixed base, a moving rod being connected through the inner cylinder, and a connecting plate being fixedly connected to one end of the moving rod facing the transverse moving rod.

[0011] In a preferred embodiment of this utility model, a locking block is fixedly connected to the connecting plate, and multiple sets of locking slots connected to the locking block are opened on the transverse rod. A spring is sleeved on the outer wall of the moving rod, and the spring is located between the inner wall of the connecting plate and the fixed seat.

[0012] This utility model solves the defects existing in the background technology, and has the following beneficial effects: This invention uses a first clamping member and a second clamping member to fix both ends of the flexible circuit board. The operation of the motor on the testing unit drives the gear fixed on the drive shaft to rotate. Since the gear is engaged with multiple sets of meshing grooves and the arc-shaped seat is limited by the rotation of the T-block and the arc-shaped groove, the arc-shaped seat drives one end of the flexible circuit board to bend back and forth on the inner wall of the circular frame. The bending range is wide, which improves the bending resistance test effect of the flexible circuit board. By pulling the moving rod on the adjusting unit, the connecting plate and the locking block can be moved. With the elasticity of the spring, the locking block can be connected or disengaged from the locking groove opened on the transverse rod, realizing the adjustment of the distance between the first clamping member and the second clamping member. It can test the bending resistance of flexible circuit boards of different sizes and has a wide range of applications. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present utility model; Figure 2 This is a schematic diagram of the fixing frame structure of a preferred embodiment of the present utility model; Figure 3 This is a cross-sectional view of the front structure of the adjustment part according to a preferred embodiment of the present invention; Figure 4 This is a top view sectional diagram of the arc-shaped seat structure of a preferred embodiment of the present invention.

[0014] In the diagram: 10. Base; 11. Circular frame; 12. Control panel; 13. First clamping component; 14. Adjusting screw; 15. Lower pressure plate; 16. Anti-slip pad; 17. Guide roller; 18. Second clamping component; 20. Testing section; 201. Arc-shaped seat; 202. Motor; 203. Engaging groove; 204. Arc-shaped groove; 205. Drive shaft; 206. Gear; 207. T-block; 30. Adjustment section; 301. Fixed seat; 302. Horizontal movement rod; 303. Slot; 304. Moving rod; 305. Inner cylinder; 306. Connecting plate; 307. Spring; 308. Locking block. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0016] This embodiment provides a flexible circuit board bending resistance testing device. The device fixes both ends of the flexible circuit board using a first clamping member 13 and a second clamping member 18. The operation of the motor 202 on the testing unit 20 drives the gear 206 fixed to the drive shaft 205 to rotate. Because the gear 206 meshes with multiple sets of meshing grooves 203, and the arc-shaped seat 201 is limited in rotation by the T-block 207 and the arc-shaped groove 204, the arc-shaped seat 201 drives the flexible circuit board. One end of the flexible circuit board is bent back and forth on the inner wall of the circular frame 11, with a wide bending range, which improves the bending resistance test effect of the flexible circuit board. By pulling the moving rod 304 on the adjustment part 30, the connecting plate 306 and the locking block 308 can be moved. With the elasticity of the spring 307, the locking block 308 can be connected or disengaged from the slot 303 opened on the transverse rod 302, realizing the adjustment of the distance between the first clamping member 13 and the second clamping member 18. It can test the bending resistance of flexible circuit boards of different sizes and has a wide range of applications.

[0017] Combination Figures 1 to 4 As shown, the flexible circuit board bending resistance testing device of this embodiment includes a base 10 and a circular frame 11. A control panel 12 is installed on the circular frame 11, and a first clamping member 13 and a second clamping member 18 are provided inside the circular frame 11 for fixing the flexible circuit board. A testing part 20 and an adjustment part 30 are provided on the circular frame 11.

[0018] In this embodiment, the control panel 12 is equipped with a controller and a display screen. The bending time of the flexible circuit board can be set. The quality of the flexible circuit board is judged by the bending time. If the flexible circuit board is repeatedly bent and damaged within a specified time, it indicates that its quality is poor. Otherwise, it indicates that it meets the requirements.

[0019] Specifically, the testing unit 20 of this embodiment includes an arc-shaped seat 201 rotatably disposed on the inner wall of the circular frame 11, and the arc-shaped seat 201 is connected to the second clamping member 18; the first clamping member 13 fixes one end of the flexible circuit board, and its other end is fixed on the second clamping member 18. Through the reciprocating movement of the arc-shaped seat 201 on the inner wall of the circular frame 11, one end of the flexible circuit board is driven to bend back and forth on the inner wall of the circular frame 11. The bending range is wide, which improves the bending resistance test effect of the flexible circuit board. The adjustment unit 30 includes a fixed seat 301 installed on the circular frame 11. A transverse rod 302 is slidably connected in the fixed seat 301 and is connected to the first clamping member 13; the transverse sliding of the transverse rod 302 in the fixed seat 301 drives the first clamping member 13 to move laterally, which can adjust the distance between the first clamping member 13 and the second clamping member 18, and can test the bending resistance of flexible circuit boards of different sizes, with a wide range of applications.

[0020] In this embodiment, both the first clamping member 13 and the second clamping member 18 are threadedly connected to an adjusting screw 14. The adjusting screw 14 is provided with a lower pressure plate 15. The lower pressure plate 15, the first clamping member 13 and the second clamping member 18 are all provided with anti-slip pads 16. The open ends of the first clamping member 13 and the second clamping member 18 are provided with two sets of rotating guide rollers 17. The rotation of the knob on the adjusting screw 14 drives the lower pressure plate 15 to move, which, together with the anti-slip pads 16, fixes the flexible circuit board. The guide rollers 17 play a protective role, preventing the flexible circuit board from being damaged during bending.

[0021] Furthermore, the testing unit 20 also includes a motor 202 fixedly connected to the arc-shaped seat 201. The output end of the motor 202 is connected to a drive shaft 205, and a gear 206 is fixedly connected to the drive shaft 205. The open end of the arc-shaped seat 201 faces the inner wall of the circular frame 11. The inner wall of the circular frame 11 has multiple sets of meshing grooves 203, and each set of meshing grooves 203 is meshed with the gear 206.

[0022] Combination Figure 1 and Figure 4 As shown, the inner wall of the circular frame 11 in this embodiment is provided with two sets of arc-shaped grooves 204. Two sets of T-shaped blocks 207 are fixedly connected to the outer wall of the open end of the arc-shaped seat 201. The T-shaped blocks 207 are rotatably disposed in the arc-shaped grooves 204. The motor 202 is controlled by the control panel 12, and the forward and reverse frequency of the motor 202 is preset so that the second clamping member 18 can reciprocate on the inner wall of the circular frame 11. The operation of the motor 202 drives the gear 206 fixed on the drive shaft 205 to rotate. Since the gear 206 is meshed with multiple sets of meshing grooves 203 and the arc-shaped seat 201 is limited by the rotation of the T-shaped blocks 207 and the arc-shaped grooves 204, the arc-shaped seat 201 drives one end of the flexible circuit board to bend back and forth on the inner wall of the circular frame 11.

[0023] In this embodiment, the adjusting part 30 further includes an inner cylinder 305 fixed to the inner wall of the fixed base 301. A moving rod 304 is connected through the inner cylinder 305. A connecting plate 306 is fixed to one end of the moving rod 304 facing the transverse moving rod 302. A locking block 308 is fixed to the connecting plate 306. Multiple sets of locking grooves 303 connected to the locking blocks 308 are provided on the transverse moving rod 302. A spring 307 is sleeved on the outer wall of the moving rod 304. The spring 307 is located between the connecting plate 306 and the inner wall of the fixed base 301. The inner cylinder 305 guides the movement of the moving rod 304. The elasticity of the spring 307 causes the locking block 308 to always move toward one end of the horizontal moving rod 302. During the movement of the horizontal moving rod 302, the moving rod 304 is pulled up. At this time, the locking block 308 disengages from the slot 303, and the spring 307 is in a compressed state. After the position of the first clamping member 13 is determined, the moving rod 304 is released, and the compressed spring 307 automatically resets, so that the locking block 308 fixed on the connecting plate 306 is connected to the corresponding slot 303, thus fixing the position of the horizontal moving rod 302 and the first clamping member 13. Flexible circuit boards of different sizes can be fixed.

[0024] In actual use, the flexible circuit board bending resistance testing device of this embodiment places both ends of the flexible circuit board in the first clamping member 13 and the second clamping member 18 respectively. Rotating the adjusting screw 14 moves the lower pressure plate 15, fixing both ends of the flexible circuit board in the first clamping member 13 and the second clamping member 18. The control panel 12 controls the motor 202 of the testing unit 20 to work, which drives the gear 206 fixed on the drive shaft 205 to rotate. Since the gear 206 is engaged with multiple sets of meshing grooves 203 and the arc-shaped seat 201 is limited by the rotation of the T-block 207 and the arc-shaped groove 204, the arc-shaped seat 201 drives one end of the flexible circuit board to bend back and forth on the inner wall of the circular frame 11. With a wide range of applications, the bending resistance test of flexible circuit boards is improved. When testing flexible circuit boards of different lengths, the moving rod 304 of the adjusting part 30 is pulled up. At this time, the locking block 308 disengages from the locking slot 303, the spring 307 is in a compressed state, and the horizontal moving rod 302 can move within the fixed base 301. This allows adjustment of the distance between the first clamping member 13 and the second clamping member 18. After determining the position of the first clamping member 13, the moving rod 304 is released, and the compressed spring 307 automatically resets, so that the locking block 308 fixed on the connecting plate 306 connects with the corresponding locking slot 303, thus fixing the position of the first clamping member 13. This method can test the bending resistance of flexible circuit boards of different sizes and has a wide range of applications.

[0025] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A flexible circuit board bending resistance testing device, characterized in that, Includes a base (10) and a circular frame (11). The circular frame (11) is equipped with a control panel (12), and the circular frame (11) is provided with a first clamping member (13) and a second clamping member (18) for fixing the flexible circuit board. The circular frame (11) is provided with a testing section (20) and an adjustment section (30). The test unit (20) includes an arc-shaped seat (201) rotatably disposed on the inner wall of the circular frame (11), and the arc-shaped seat (201) is connected to the second clamping member (18); Adjustment part (30), the adjustment part (30) includes a fixed seat (301) mounted on a circular frame (11), a transverse rod (302) is slidably connected in the fixed seat (301), and the transverse rod (302) is connected to the first clamping member (13).

2. The flexible circuit board bending resistance testing device according to claim 1, characterized in that, The first clamping member (13) and the second clamping member (18) are both threadedly connected with adjusting screws (14). The adjusting screws (14) are provided with lower pressure plates (15). The lower pressure plates (15), the first clamping member (13) and the second clamping member (18) are all provided with anti-slip pads (16). The open ends of the first clamping member (13) and the second clamping member (18) are provided with two sets of rotating guide rollers (17).

3. The flexible circuit board bending resistance testing device according to claim 1, characterized in that, The test unit (20) also includes a motor (202) fixed on the arc-shaped seat (201), the output end of the motor (202) is connected to a drive shaft (205), and a gear (206) is fixed on the drive shaft (205).

4. The flexible circuit board bending resistance testing device according to claim 3, characterized in that, The open end of the arc-shaped seat (201) is directly opposite the inner wall of the circular frame (11). The inner wall of the circular frame (11) has multiple sets of meshing grooves (203), and each set of meshing grooves (203) is meshed with the gear (206).

5. The flexible circuit board bending resistance testing device according to claim 1, characterized in that, The inner wall of the circular frame (11) is provided with two sets of arc grooves (204), and the outer wall of the opening end of the arc seat (201) is fixed with two sets of T-shaped blocks (207), and the T-shaped blocks (207) are rotatably disposed in the arc grooves (204).

6. The flexible circuit board bending resistance testing device according to claim 1, characterized in that, The adjustment part (30) also includes an inner cylinder (305) fixed to the inner wall of the fixed seat (301), a moving rod (304) is connected through the inner cylinder (305), and a connecting plate (306) is fixed to one end of the moving rod (304) facing the transverse rod (302).

7. The flexible circuit board bending resistance testing device according to claim 6, characterized in that, A locking block (308) is fixedly connected to the connecting plate (306), and multiple sets of locking slots (303) connected to the locking block (308) are opened on the transverse rod (302). A spring (307) is sleeved on the outer wall of the moving rod (304), and the spring (307) is located between the inner wall of the connecting plate (306) and the fixed seat (301).

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