Easily-bent anti-cracking FPC (Flexible Printed Circuit)

Abstract

The utility model discloses an easy-to-bend anti-cracking FPC flexible circuit board comprising a circuit board body, two sides of the circuit board body are respectively and fixedly provided with a circuit board end portion, one side of the circuit board body is provided with a limiting bending mechanism, the limiting bending mechanism comprises a U-shaped block, the U-shaped block is sleeved on the side wall of the circuit board body, and the U-shaped block is provided with a groove. The bending angle limiting structure comprises a U-shaped block, the top of the U-shaped block is provided with a lifting screw rod, the lifting screw rod is in threaded fit with the U-shaped block, the bottom end of the lifting screw rod is rotatably connected with a rotating shaft, the bottom of the rotating shaft is fixedly connected with a bending block, and two sides of the bending block are respectively and fixedly provided with a first L-shaped cushion block. The problems that in the assembling and using process, if the actual bending angle of the circuit board does not accord with the needed preset bending angle due to factors such as unskilled operators, bending needs to be conducted again, the number of times of bending is increased, creases are prone to being generated, and the service life of the circuit board is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit boards, in particular to an FPC flexible circuit board which is easy to bend and prevent cracking. Background Art

[0002] Flexible circuit boards are printed circuits made of flexible insulating substrates. They can effectively meet the needs of miniaturization and bending and movement of electronic products. They are widely used in aerospace, military, mobile communications, laptops, computer peripherals, PDAs, digital cameras and other fields or products.

[0003] The existing flexible circuit board does not have a bending angle limiting structure. During the assembly and use process, if the actual bending angle of the circuit board does not match the required preset bending angle due to factors such as unskilled operators, it needs to be bent again. The increase in the number of bending times is likely to cause creases, which affects the service life of the circuit board. Therefore, the utility model proposes an FPC flexible circuit board that is easy to bend and crack-resistant to solve the above problem. Utility Model Content

[0004] In view of the defects of the above-mentioned prior art, the purpose of the utility model is to provide an FPC flexible circuit board that is easy to bend and crack-resistant.

[0005] To achieve the above-mentioned purpose, the utility model provides an FPC flexible circuit board that is easy to bend and prevent cracking, including a circuit board body, circuit board ends are fixedly arranged on both sides of the circuit board body, a limited bending mechanism is arranged on one side of the circuit board body, the limited bending mechanism includes a U-shaped block, the U-shaped block is sleeved on the side wall of the circuit board body, a lifting screw is arranged on the top of the U-shaped block, the lifting screw is threadedly matched with the U-shaped block, the bottom end of the lifting screw is rotatably connected to a rotating shaft, the bottom of the rotating shaft is fixedly connected to a bending block, and first L-shaped pads are fixedly arranged on both sides of the bending block.

[0006] Furthermore, a rotating handle is fixedly provided at the top end of the lifting screw rod, and an outer surface of the rotating handle is provided with an anti-slip thread.

[0007] Furthermore, telescopic rods are respectively fixedly provided through both sides of the top of the U-shaped block, and the bottom ends of the telescopic rods are fixedly connected to the bending block.

[0008] Furthermore, the first L-shaped pad includes a wear-resistant layer, a waterproof layer is fixedly disposed on the inner side of the wear-resistant layer, and a rubber layer is fixedly disposed on the inner side of the waterproof layer.

[0009] Furthermore, a micro electric cylinder is fixedly arranged at the center position of the bottom of the bending block, and a clamping block mechanism is fixedly connected to the bottom of the micro electric cylinder.

[0010] Furthermore, the clamping block mechanism includes a fixed block, and transverse grooves are respectively provided on both sides of the bottom of the fixed block. Sliding plates are slidably arranged in the two transverse grooves, and the position of the sliding plates can be fixed. A second L-shaped pad is fixedly arranged at the end of the sliding plate.

[0011] Furthermore, sliding blocks are fixedly arranged on both sides of the sliding plate, respectively. The sliding blocks are slidably arranged in sliding grooves, and the sliding grooves are transversely arranged on the inner wall of the transverse grooves.

[0012] Furthermore, two sides of the front surface of the fixing block are respectively provided with tension screws, the tension screws are threadedly matched with the fixing block, and the sliding plate is fixed by tightening the tension screws.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. Through the U-shaped block, lifting screw, bending block, first L-shaped pad, micro-electric cylinder, fixed block and tension screw and other structures, the U-shaped block is sleeved on the side wall of the circuit board body. According to the bending angle of the circuit board body, the lifting screw is tightened downward to adjust the height of the bending block. According to the thickness of the circuit board body, the micro-electric cylinder is started to extend and retract to move the fixed block, so that the fixed block can clamp and fix the circuit board body. According to the bending amplitude of the circuit board body, the depth of the sliding plate sliding into the transverse groove is adjusted. The sliding plate is then fixed by tightening the tension screw to bend the circuit board body upward. Under the action of the sliding plate and the bending block, the required bending angle can be obtained at one time. Under the action of the first L-shaped pad and the second L-shaped pad, the flexible circuit board can be bent to protect the bending, which solves the problem that the existing flexible circuit board has no bending angle limiting structure. During assembly and use, if the actual bending angle of the circuit board does not match the required preset bending angle due to factors such as unskilled operators, it needs to be bent again. The increase in the number of bending times is prone to creases, which affects the service life of the circuit board.

[0015] 2. The wear-resistant layer is provided to improve the wear resistance of the outer surface of the first L-shaped pad, the waterproof layer is provided to improve the waterproof performance of the first L-shaped pad, and the rubber layer is provided to improve the buffering protection of the first L-shaped pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments of the utility model. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a top view provided by the utility model;

[0018] Figure 2 It is a rear cross-sectional view provided by the utility model;

[0019] Figure 3 This is a front view of the clamping block mechanism provided by the utility model;

[0020] Figure 4 This is a cross-sectional view of the clamping block mechanism provided by the utility model;

[0021] Figure 5 It is a cross-sectional view of a fixing block provided by the utility model;

[0022] Figure 6 This is a schematic diagram of the structure of the first L-shaped cushion block provided by the utility model;

[0023] Description of reference numerals:

[0024] 1. Circuit board end; 2. Circuit board body; 3. Limit bending mechanism; 31. Turning handle; 32. Lifting screw; 33. U-shaped block; 34. First L-shaped pad; 341. Wear-resistant layer; 342. Waterproof layer; 343. Rubber layer; 35. Bending block; 36. Clamping block mechanism; 361. Sliding plate; 362. Fixed block; 363. Tension screw; 37. Rotating shaft; 38. Telescopic rod; 39. Micro electric cylinder; 4. Horizontal groove; 5. Sliding block; 6. Sliding groove; 7. Second L-shaped pad. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0026] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of the present utility model or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order.

[0027] See also Figure 1-6A FPC flexible circuit board that is easy to bend and crack-proof comprises a circuit board body 2, circuit board ends 1 are fixedly arranged on both sides of the circuit board body 2, a limited bending mechanism 3 is arranged on one side of the circuit board body 2, the limited bending mechanism 3 comprises a U-shaped block 33, the U-shaped block 33 is sleeved on the side wall of the circuit board body 2, a lifting screw 32 is arranged on the top of the U-shaped block 33, the lifting screw 32 is threadedly matched with the U-shaped block 33, the bottom end of the lifting screw 32 is rotatably connected with a rotating shaft 37, the bottom of the rotating shaft 37 is fixedly connected with a bending block 35, first L-shaped pads 34 are fixedly arranged on both sides of the bending block 35, a rotating handle 31 is fixedly arranged on the top of the lifting screw 32, and an anti-slip screw is arranged on the outer surface of the rotating handle 31 The U-shaped block 33 has a top with telescopic rods 38 respectively passing through and fixed on both sides. The bottom end of the telescopic rod 38 is fixedly connected to the bending block 35. A micro-electric cylinder 39 is fixedly provided at the bottom center of the bending block 35. The bottom of the micro-electric cylinder 39 is fixedly connected to a clamping block mechanism 36. The clamping block mechanism 36 includes a fixed block 362. The bottom of the fixed block 362 is provided with transverse grooves 4 on both sides. Sliding plates 361 are slidably provided in the two transverse grooves 4. The position of the sliding plate 361 can be fixed. A second L-shaped pad 7 is fixedly provided at the end of the sliding plate 361. Sliding blocks 5 are fixedly provided on both sides of the sliding plate 361. The sliding blocks 5 are slidably provided in the sliding grooves 6. The sliding grooves 6 are transversely provided on the inner wall of the transverse grooves 4. The positive end of the fixed block 362 is provided with a plurality of sliding blocks 7. Tension screws 363 are respectively provided on both sides of the surface, and the tension screws 363 are threadedly matched with the fixed block 362. The sliding plate 361 is fixed by tightening the tension screws 363. Through the U-shaped block 33, the lifting screw 32, the bending block 35, the first L-shaped pad 34, the micro-electric cylinder 39, the fixed block 362 and the tension screw 363 and other structures, the U-shaped block 33 is sleeved on the side wall of the circuit board body 2. According to the bending angle of the circuit board body 2, the lifting screw 32 is tightened downward to adjust the height of the bending block 35. According to the thickness of the circuit board body 2, the micro-electric cylinder 39 is started to extend and retract to move the fixed block 362, so that the fixed block 362 can clamp and fix the circuit board body 2. The desired bending range is adjusted by adjusting the depth of the sliding plate 361 sliding into the transverse groove 4. The sliding plate 361 is then fixed by tightening the tension screw 363 to bend the circuit board body 2 upward. Under the action of the sliding plate 361 and the bending block 35, the required bending angle can be obtained at one time. Under the action of the first L-shaped pad 34 and the second L-shaped pad 7, the flexible circuit board can be bent to protect the bending, which solves the problem that the existing flexible circuit board has no bending angle limiting structure. During the assembly and use process, if the actual bending angle of the circuit board does not match the required preset bending angle due to factors such as unskilled operators, it needs to be bent again. The more bending times, the more likely it is to produce creases, which affects the service life of the circuit board.

[0028] As an improvement of the above technical solution, the first L-shaped pad 34 includes a wear-resistant layer 341, a waterproof layer 342 is fixedly arranged on the inner side of the wear-resistant layer 341, and a rubber layer 343 is fixedly arranged on the inner side of the waterproof layer 342. The wear-resistant layer 341 is provided to improve the wear resistance of the outer surface of the first L-shaped pad 34, the waterproof layer 342 is provided to improve the waterproof performance of the first L-shaped pad 34, and the rubber layer 343 is provided to improve the buffering protection of the first L-shaped pad 34.

[0029] How this utility works and how to use it:

[0030] When in use, the U-shaped block 33 is sleeved on the side wall of the circuit board body 2. According to the angle at which the circuit board body 2 is to be bent, the lifting screw 32 is tightened downward to adjust the height of the bending block 35. According to the thickness of the circuit board body 2, the micro-electric cylinder 39 is started to extend and retract to move the fixing block 362, so that the fixing block 362 can clamp and fix the circuit board body 2. According to the bending amplitude of the circuit board body 2, the depth of the sliding plate 361 sliding into the transverse groove 4 is adjusted, and the sliding plate 361 is then fixed by tightening the tension screw 363. The upper bending circuit board body 2 can obtain the required bending angle at one time under the action of the sliding plate 361 and the bending block 35. Under the action of the first L-shaped pad 34 and the second L-shaped pad 7, the flexible circuit board can be bent to protect it. The wear-resistant layer 341 is provided to improve the wear resistance of the outer surface of the first L-shaped pad 34. The waterproof layer 342 is provided to improve the waterproof performance of the first L-shaped pad 34. The rubber layer 343 is provided to improve the buffering protection of the first L-shaped pad 34.

[0031] The above description is only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the utility model, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the utility model.

Claims

1. An easy-to-bend and crack-resistant FPC flexible circuit board, characterized in that: It includes a circuit board body, both sides of which are respectively fixed with circuit board ends, one side of the circuit board body is provided with a limited bending mechanism, the limited bending mechanism includes a U-shaped block, the U-shaped block is sleeved on the side wall of the circuit board body, a lifting screw is provided on the top of the U-shaped block, the lifting screw is threadedly matched with the U-shaped block, the bottom end of the lifting screw is rotatably connected to a rotating shaft, the bottom of the rotating shaft is fixedly connected to a bending block, and first L-shaped pads are respectively fixedly provided on both sides of the bending block.

2. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 1 is characterized in that: A rotating handle is fixedly arranged at the top end of the lifting screw rod, and an anti-skid thread is arranged on the outer surface of the rotating handle.

3. The FPC flexible circuit board that is easy to bend and crack-proof according to claim 2 is characterized in that: Telescopic rods are respectively penetrated and fixedly arranged on both sides of the top of the U-shaped block, and the bottom ends of the telescopic rods are fixedly connected to the bending block.

4. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 3 is characterized in that: The first L-shaped pad includes a wear-resistant layer, a waterproof layer is fixedly arranged on the inner side of the wear-resistant layer, and a rubber layer is fixedly arranged on the inner side of the waterproof layer.

5. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 4, characterized in that: A micro electric cylinder is fixedly arranged at the center position of the bottom of the bending block, and a clamping block mechanism is fixedly connected to the bottom of the micro electric cylinder.

6. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 5, characterized in that: The clamping block mechanism includes a fixed block, and transverse grooves are respectively provided on both sides of the bottom of the fixed block. Sliding plates are slidably arranged in the two transverse grooves, and the position of the sliding plates can be fixed. A second L-shaped pad is fixedly arranged at the end of the sliding plate.

7. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 6, characterized in that: Slide blocks are fixedly arranged on both sides of the sliding plate, respectively. The slide blocks are slidably arranged in the sliding grooves, and the sliding grooves are transversely arranged on the inner wall of the transverse grooves.

8. The easy-to-bend and crack-resistant FPC flexible circuit board according to claim 7, characterized in that: The front sides of the fixing block are respectively provided with tension screws, the tension screws are threadedly matched with the fixing block, and the sliding plate is fixed by tightening the tension screws.

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