Flexible wiring board with tensile-resistant structure

Abstract

The utility model relates to flexible circuit board technical field discloses a kind of flexible circuit board of tensile resistance structure, including two circuit boards, and the electric connection of one side of two the circuit boards is close to circuit board body, the surface of the circuit board is equipped with protective structure, the protective structure includes two clamps A and clamp B, two the clamps A and clamp B are respectively attached on the two sides of two circuit boards and circuit board body, the surface of the clamps A and clamp B is penetrated by two bolts, this flexible circuit board, by setting protective structure, reach when being pulled rectangular strip on the surface of clamp, force can be conducted to entire clamp area, avoid stress concentration in the connecting part of circuit board and circuit board body, prevent circuit misregistration or solder joint loosening due to stretching by excessive relative displacement between self rigid restriction component, reduce the damage risk of the combination of circuit board and circuit board body.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board technology, specifically a flexible circuit board with a tensile-resistant structure. Background Technology

[0002] Flexible printed circuit boards (FPCBs) are electronic connection devices that use a flexible insulating substrate as a carrier and form conductive lines on the substrate through processes such as etching. They are lightweight, thin, flexible, foldable, and resistant to high and low temperatures. They can adapt to complex installation spaces and realize flexible connections between components. They are widely used in products that require compact layout or dynamic connection, such as mobile phones, wearable devices, and automotive electronics.

[0003] Flexible circuit boards are often used in conjunction with rigid circuit boards. However, during installation, if there are deviations in component assembly or unreasonable design of fixing points, the circuits will be forced to bear additional tensile and torsional stresses. Especially at critical points where components and circuits connect, stress will continue to accumulate. This pulling force will gradually damage the conductor layer of the circuit and the junction of the circuit and the rigid circuit board. Under long-term or repeated stress, the circuit is prone to breakage. Not only may the conductor at the bend be completely broken, but it may also cause problems such as solder joint detachment and local circuit damage. Ultimately, it will directly cause circuit breakage, resulting in the failure of the corresponding functional modules of the equipment or even the entire device failing to operate normally, which seriously affects the stability and service life of the product. To address this, we propose a flexible circuit board with a tensile-resistant structure. Utility Model Content

[0004] The purpose of this invention is to provide a flexible circuit board with a tensile-resistant structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible circuit board with a tensile strength structure, comprising two circuit boards, wherein the two circuit boards are electrically connected to a circuit board body on their respective adjacent sides, and the surface of the circuit boards is provided with a protective structure, the protective structure comprising two clamping plates A and B, the two clamping plates A and B being respectively attached to the two circuit boards and the circuit board body on their respective sides, and two bolts passing through the threads on the surfaces of the clamping plates A and B, and several rectangular strips being fixedly connected to the adjacent sides of the two clamping plates A and B.

[0006] The effects achieved by the above components are as follows: by setting up a protective structure, the rectangular strips on the surface of the clamping plate can transmit the force to the entire clamping plate area when it is stretched, avoiding stress concentration at the connection between the circuit board and the circuit board body. By limiting excessive relative displacement between components through its own rigidity, it prevents circuit misalignment or loosening of solder joints due to stretching, and reduces the risk of damage at the joint between the circuit board and the circuit board body.

[0007] Preferably, two positioning rods are fixedly connected to the sides of clamping plates A and B that are close to each other, and two positioning holes are opened on the surface of the circuit board, the size of the positioning rods being adapted to the size of the positioning holes.

[0008] The effect achieved by the above components is that the positioning rod is accurately inserted into the positioning hole of the circuit board, quickly completing the positioning and alignment of the components and avoiding initial stress caused by assembly deviations.

[0009] Preferably, a folding plate is fixedly connected to the surface of several of the rectangular strips.

[0010] The effect achieved by the above-mentioned components is that when the rectangular strip is subjected to tensile force, the folded plate on the surface of the rectangular strip can absorb part of the tensile force by slightly adjusting its own bending angle, thereby further improving the tensile resistance of the rectangular strip.

[0011] Preferably, two protective pads are fixedly connected to the sides of clamp A and clamp B that are close to each other.

[0012] The effect achieved by the above components is that the protective pads are directly attached to the surface of the circuit board and the circuit board body, thereby preventing damage caused by hard contact between the clamps A and B and the circuit board and the circuit board body.

[0013] Preferably, one end of the bolt is fixedly connected to a circular plate, and the circular plate has two rotating shafts rotatably connected to its arc surface. The two ends of the rotating shafts are fixedly connected to rotating plates.

[0014] The effect achieved by the above components is that the rotating plate at the end of the bolt can be flipped by the rotating shaft, which facilitates quick tightening or loosening of the bolt and improves assembly efficiency.

[0015] Preferably, the surface of the rotating plate is provided with an arc-shaped groove.

[0016] The effect achieved by the above components is that the arc-shaped groove on the surface of the rotating plate increases the gripping force and makes it easier to pinch the rotating plate, further facilitating the rotation of the bolts.

[0017] Preferably, extension rods are fixedly connected to both sides of the clamping plate A and clamping plate B, and a positioning plate is fixedly connected to one end of the two extension rods that are close to each other.

[0018] The effect achieved by the above components is that the extension rod and the positioning plate can limit the distance between clamp A and clamp B, preventing clamp A and clamp B from excessively clamping the circuit board, thereby preventing the circuit board from being damaged.

[0019] Compared with the prior art, the beneficial effects of this utility model are: This utility model, by setting a protective structure, allows clamping plates A and B to be respectively attached to both sides of the circuit board and the circuit board body. Then, bolts are used to pass through clamping plates A and B and tighten them, firmly clamping the circuit board and the circuit board body to form a stable overall structure. When subjected to tension, the rectangular strips on the surface of the clamping plates can transmit the force to the entire clamping plate area, avoiding stress concentration at the connection between the circuit board and the circuit board body. The rigidity of the clamping plates limits excessive relative displacement between components, preventing circuit misalignment or loosening of solder joints due to tension, and reducing the risk of damage at the junction of the circuit board and the circuit board body. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the circuit board and circuit board body of this utility model; Figure 3 This is a schematic diagram of the protective structure of this utility model; Figure 4 This is a schematic diagram of the structure of the rectangular strip in this utility model; Figure 5 This is a schematic diagram of the structure of clamping plate A and clamping plate B of this utility model; Figure 6 This is a schematic diagram of the bolt structure of this utility model.

[0021] In the diagram: 1. Circuit board; 2. Circuit board body; 3. Protective structure; 301. Clamping plate A; 302. Clamping plate B; 303. Bolt; 304. Rectangular strip; 305. Positioning rod; 306. Positioning hole; 307. Folding plate; 308. Protective pad; 309. Round plate; 310. Rotating shaft; 311. Rotating plate; 312. Arc groove; 313. Extension rod; 314. Positioning plate. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3This utility model provides a technical solution: a flexible circuit board with a tensile-resistant structure, comprising two circuit boards 1, with a circuit board body 2 electrically connected to one side of each circuit board 1. A protective structure 3 is provided on the surface of each circuit board 1, comprising two clamping plates A301 and B302, which are respectively attached to the sides of the two circuit boards 1 and the circuit board body 2. Two bolts 303 are threaded through the surfaces of clamping plates A301 and B302. Several rectangular strips 304 are fixedly connected to the sides of each clamping plate A301 and B302 that are close to each other. By setting the protective structure 3, when subjected to tension, the rectangular strips 304 on the surface of the clamping plates can transmit the force to the entire clamping area, avoiding stress concentration at the connection between the circuit board 1 and the circuit board body 2. The rigidity of the structure limits excessive relative displacement between components, preventing circuit misalignment or loosening of solder joints due to tension, and reducing the risk of damage at the junction of the circuit board 1 and the circuit board body 2.

[0024] Reference Figure 4-6As shown in this embodiment: Two positioning rods 305 are fixedly connected to the sides of clamping plates A301 and B302 that are close to each other. Two positioning holes 306 are formed on the surface of circuit board 1. The size of the positioning rods 305 matches the size of the positioning holes 306. The positioning rods 305 are precisely inserted into the positioning holes 306 of circuit board 1, quickly completing the positioning and alignment of the components and avoiding initial stress caused by assembly deviations. Several rectangular strips 304 have folding plates 307 fixedly connected to their surfaces. When the rectangular strips 304 are subjected to tensile force, the folding plates 307 can absorb part of the tensile force through slight adjustments in their bending angle, further improving the tensile strength of the rectangular strips 304. Two protective pads 308 are fixedly connected to the sides of clamping plates A301 and B302 that are close to each other. The protective pads 308 are directly attached to the surfaces of circuit board 1 and circuit board body 2, thereby preventing damage caused by hard contact between clamping plates A301 and B302 and circuit board 1 and circuit board body 2. One end of the bolt 303 is fixedly connected to a circular plate 309. Two rotating shafts 310 are rotatably connected to the arc surface of the circular plate 309. Rotating plates 311 are fixedly connected to both ends of the rotating shafts 310. The rotating plate 311 at the end of the bolt 303 can be flipped via the rotating shafts 310, facilitating quick tightening or loosening of the bolt 303 and improving assembly efficiency. An arc-shaped groove 312 is formed on the surface of the rotating plate 311. This groove increases gripping force and facilitates pinching the rotating plate 311, further facilitating the rotation of the bolt 303. Extension rods 313 are fixedly connected to both sides of clamping plates A301 and B302. A positioning plate 314 is fixedly connected to the end of each extension rod 313 closest to each other. The extension rods 313 and the positioning plate 314 limit the distance between clamping plates A301 and B302, preventing excessive clamping of the circuit board 1 by clamping plates A301 and B302, thus preventing damage to the circuit board 1.

[0025] Working principle: When protecting the circuit board body 2, clamping plates A301 and B302 are first attached to the sides of the circuit board 1 and the circuit board body 2 respectively. The positioning rod 305 is precisely inserted into the positioning hole 306 of the circuit board 1 to quickly complete the positioning and alignment of the components, avoiding initial stress caused by assembly deviation. Then, bolts 303 are passed through clamping plates A301 and B302 and tightened. The rotating plate 311 at the end of the bolt 303 can be flipped by the rotating shaft 310 to facilitate quick tightening or loosening of the bolt 303, improving assembly efficiency. The arc groove 312 on the surface of the rotating plate 311 increases the gripping force and facilitates the action of pinching the rotating plate 311, further facilitating the action of rotating the bolt 303, firmly clamping the circuit board 1 and the circuit board body 2 to form a stable overall structure. The extension rod 313 and the positioning plate 314 can limit the distance between clamping plates A301 and B302. To prevent the clamping plates A301 and B302 from excessively clamping the circuit board 1 and thus damaging it, the protective pad 308 is directly attached to the surface of the circuit board 1 and the circuit board body 2, thus preventing the clamping plates A301 and B302 from making hard contact with the circuit board 1 and the circuit board body 2 and causing damage. When subjected to tension, the rectangular strip 304 on the surface of the clamping plate can transmit the force to the entire clamping plate area, avoiding stress concentration at the connection between the circuit board 1 and the circuit board body 2. By limiting excessive relative displacement between components through its own rigidity, it prevents circuit misalignment or loosening of solder joints due to tension, reducing the risk of damage at the joint between the circuit board 1 and the circuit board body 2. The folded plate 307 on the surface of the rectangular strip 304 can absorb part of the tension by slightly adjusting its own bending angle when the rectangular strip 304 is subjected to tensile force, further improving the tensile resistance of the rectangular strip 304.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible circuit board with a tensile strength structure, comprising two circuit boards (1), wherein the two circuit boards (1) are electrically connected to a circuit board body (2) on adjacent sides, and a protective structure (3) is provided on the surface of the circuit boards (1), characterized in that: The protective structure (3) includes two clamping plates A (301) and B (302). The two clamping plates A (301) and B (302) are respectively attached to the two sides of the two circuit boards (1) and the circuit board body (2). Two bolts (303) are threaded through the surface of the clamping plates A (301) and B (302). Several rectangular strips (304) are fixedly connected to the side of the two clamping plates A (301) and B (302) that are close to each other.

2. The flexible circuit board with a tensile-resistant structure according to claim 1, characterized in that: Two positioning rods (305) are fixedly connected to the side of clamping plate A (301) and clamping plate B (302) that are close to each other. Two positioning holes (306) are opened on the surface of the circuit board (1). The size of the positioning rod (305) is adapted to the size of the positioning hole (306).

3. The flexible circuit board with a tensile-resistant structure according to claim 1, characterized in that: A folding plate (307) is fixedly connected to the surface of several rectangular bars (304).

4. The flexible circuit board with a tensile-resistant structure according to claim 1, characterized in that: Two protective pads (308) are fixedly connected to the sides of clamp A (301) and clamp B (302) that are close to each other.

5. A flexible circuit board with a tensile-resistant structure according to claim 1, characterized in that: One end of the bolt (303) is fixedly connected to a circular plate (309), and the circular arc surface of the circular plate (309) is rotatably connected to two rotating shafts (310), and the two ends of the rotating shafts (310) are fixedly connected to rotating plates (311).

6. A flexible circuit board with a tensile-resistant structure according to claim 5, characterized in that: The surface of the rotating plate (311) is provided with an arc-shaped groove (312).

7. A flexible circuit board with a tensile-resistant structure according to claim 1, characterized in that: Both sides of the clamping plate A (301) and clamping plate B (302) are fixedly connected with extension rods (313), and the ends of the two extension rods (313) that are close to each other are fixedly connected with positioning plates (314).

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