Anti-deformation flexible circuit board
By installing side belts and stabilizing rods on the sides of the flexible circuit board, the problem of easy tearing and damage caused by disassembly and assembly of the flexible circuit board is solved, and the anti-deformation effect of the circuit board is achieved, improving its stability and reliability.
Patent Information
- Application Number
- CN202421471300.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The current flexible circuit board is prone to tear and damage when disassembling and installing the machine, resulting in deformation or inability to use.
A flexible circuit board with anti-deformation is designed. By installing a side belt and a stabilizer rod on the sides of the circuit board, the side belt is made of rubber material and has wear resistance and elasticity. The stabilizer rod can be shaped according to the shape to avoid deformation of the circuit board during disassembly and assembly.
Effectively prevent the flexible circuit board from deforming during bending and disassembly, improve the stability and reliability of the circuit board, and avoid damage caused by tearing.
Smart Images
Figure CN222803090U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit boards, in particular to an anti-deformation flexible circuit board. Background Art
[0002] A flexible circuit board is a thin circuit board that uses a flexible substrate instead of a traditional hard substrate. It is usually composed of flexible insulating materials and conductive materials and can adapt to electronic products of different shapes by folding, bending or curling. It has the characteristics of flexibility, lightness, high density, reliability and simplified assembly. In general, flexible circuit boards have broad application prospects in various electronic products that require flexibility, lightness and high-density wiring.
[0003] At present, the existing flexible circuit boards, due to their flexibility, have certain defects when electronic equipment is disassembled and assembled, because the internal structure cannot be viewed intuitively. When the upper and lower shells are separated, the flexible circuit boards are easily torn, causing deformation, and in severe cases, they may become unusable. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides an anti-deformation flexible circuit board, which has the advantages of being able to prevent the flexible circuit board from being deformed, and solves the problem that the current flexible circuit board is easily torn and damaged during assembly and disassembly of the machine.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a deformation-resistant flexible circuit board, comprising a circuit board assembly, an edge protection assembly, and the circuit board assembly comprising a circuit board body. The circuit board body is specifically a flexible circuit board, which is a thin circuit board, using a flexible substrate instead of a traditional hard substrate, and is composed of a flexible insulating material and a conductive material. It can adapt to electronic products of different shapes by folding, bending or curling, and has good flexibility and bendability. It can adapt to the design requirements of various complex shapes and space restrictions, thereby reducing the overall thickness and weight of electronic products. Compared with traditional hard boards, it is lighter and thinner, and is suitable for application scenarios with restrictions on weight and volume, such as portable devices, smart wearable devices, etc. High-density line wiring can be achieved, making the layout of electronic devices more compact, thereby improving the performance and functional integration of the circuit, and having better anti-interference ability when subjected to external forces such as vibration and impact. At the same time, it also reduces the reliability problems caused by components such as connectors. In addition, the flexible circuit board can be directly installed on curved surfaces or special-shaped parts, so the assembly process of the product can be simplified and the assembly cost and time can be reduced.
[0006] The edge protection assembly includes an edge protection belt fixed on the side of the circuit board body, and connecting holes with two ends communicating with each other are opened in the edge protection belt. A stabilizing rod is movably sleeved in the connecting hole. The edge protection belt is made of rubber material and has certain wear resistance and resilience. It is installed on both sides of the circuit board body, so that when bending, its bending point is in an arc shape and has resilience, which can effectively prevent the circuit board body from bending and can be freely adjusted according to the arc surface. At the same time, the stabilizing rod is made of rigid material and can be shaped according to the arc surface after bending, so as to avoid the circuit board from being unable to be fully fixed and being easily torn and damaged when disassembling.
[0007] When the anti-deformation flexible circuit board is produced and manufactured, firstly, the flexible insulating material and the conductive material are prepared, and according to the circuit design requirements, the wiring diagram of the circuit board is drawn using computer-aided design software, and the graphic information is transferred to the surface of the flexible insulating material using photolithography technology to form the required circuit pattern, and chemical copper plating is performed on the circuit pattern on the surface of the flexible insulating material to cover the conductive material on the pattern to form wires and pads, and the unnecessary copper foil is removed using chemical stripping technology to retain the required circuit pattern, and holes are drilled on the flexible circuit board using laser drilling or mechanical drilling technology to connect circuits of different layers, and chemical copper plating is performed again on the surface of the circuit board to increase welding performance and protect the circuit, and then the flexible circuit board is cut into the required size and shape. The manufactured flexible circuit board is electrically tested to ensure that the circuit connection is correct and there are no problems such as short circuit or open circuit. After the test, a protective covering layer is coated on the surface of the circuit board to protect the circuit from the influence of the external environment. Then, edge protection tapes are installed on both sides of the circuit board along its length direction, and the side of the circuit board is clamped by a fixed clamp. It is firmly clamped by pressing and baked by a heat source to melt the sol layer and completely bonded and fixed to the circuit board body. Then, the stabilizing rod is inserted into the connecting hole, and the locking ring is turned and threaded at the interface of the connecting groove. The stabilizing rod is initially fixed to ensure that the circuit board body is in a stable state. Then the limiting button is turned to make it close to the tail end of the connecting button to achieve secondary fixation of the circuit board body.
[0008] As a further improvement of the above solution, a positioning hole is opened on the edge protection belt, and a positioning screw is threadedly connected in the positioning hole.
[0009] Through the above technical solution, the edge protection band is specifically made of rubber material. When the circuit board body is installed in the shell of the electronic device, the positioning screw passes through the shell and is threaded in the positioning hole to fix its position.
[0010] As a further improvement of the above solution, a fixing clamp is fixed to the side of the edge protection band, and the fixing clamp is clamped on the side of the circuit board body.
[0011] Through the above technical solution, the fixed clamp is specifically made of aluminum material, and after being pressed, it can be firmly fixed on the side of the circuit board body, so as to achieve the function of connecting and fixing the edge guard belt to the circuit board body, thereby preventing the edge guard belt from detaching from the fixed clamp, and welding technology can be used to completely fix the fixed clamp plate to the circuit board body.
[0012] As a further improvement of the above solution, a mounting slot is provided in the fixing clamp plate along its length direction, and a mounting ridge is provided on the side of the circuit board body along its length direction, and the mounting ridge is slidably connected in the mounting slot.
[0013] Through the above technical solution, the circuit board body and the fixed clamping plate are fixed twice by mounting the convex strips in the mounting grooves, which can effectively prevent the edge protection strip from being separated from the circuit board body.
[0014] As a further improvement of the above solution, a sol layer is fixed inside the fixing clamp and along its length direction, and the sol layer is bonded to the side of the circuit board body.
[0015] Through the above technical solution, when the fixing clamp is clamped and fixed on the side of the circuit board body, the sol layer is attached to the side of the circuit board body and is bonded and fixed by baking.
[0016] As a further improvement of the above solution, connecting grooves are provided at both ends of the stabilizing rod, a telescopic rod is movably sleeved in the connecting groove, a limit button is fixed at one end of the telescopic rod, and the limit button fits in the connecting groove.
[0017] Through the above technical solution, when the telescopic rod is pulled, the length can be adjusted to meet the use of edge guards of different lengths. At the same time, when the limit button moves to the front end in the connecting groove, it plays a limiting role to prevent the telescopic rod from detaching from the connecting groove.
[0018] As a further improvement of the above solution, one end of the telescopic rod is movably sleeved with a locking ring, and the side of the telescopic rod is movably sleeved with a tension spring, the locking ring is threadedly connected to the stabilizing rod, and the tension spring is fitted between the connecting groove and the locking ring and the limit button.
[0019] Through the above technical solution, when the telescopic rod is extended outward, the tension spring is tightened. When the telescopic rod loses force, the tension spring automatically rebounds and expands, which can tighten the circuit board body.
[0020] As a further improvement of the above solution, a connecting button is fixed to one end of the telescopic rod, a limiting button is threadedly connected to the side of the connecting button, and the limiting button fits in the connecting hole.
[0021] Through the above technical solution, by rotating the limiting button, it can move back and forth on the side of the connecting button, so that when it is used on edge guard bands of different lengths, after the limiting button is fully entered into the connecting hole, the stabilizing rod can be limited and fixed in the edge guard band, thereby avoiding the stabilizing rod from shaking in the edge guard band.
[0022] Compared with the prior art, the utility model provides an anti-deformation flexible circuit board, which has the following beneficial effects:
[0023] 1. The anti-deformation flexible circuit board has an edge protection belt installed on the side of the circuit board along its length direction. The edge protection belt has certain wear resistance and resilience. Under stress conditions, the edge protection belt drives the circuit board to bend in an arc, thereby effectively preventing the flexible circuit board from being bent and damaged.
[0024] 2. The anti-deformation flexible circuit board has connecting holes at both ends interconnected in the edge protection band, and a stabilizing rod is movably sleeved in the connecting hole. The stabilizing rod can be completely fitted into the shell after being pressed according to the concave and convex shape of the installation environment of the flexible circuit board, and the circuit board is limited by the limiting buttons at both ends. Therefore, when the machine is disassembled and assembled, the tearing force generated cannot cause the stabilizing rod to deform, thereby effectively preventing the deformation of the flexible circuit board. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the overall structure of the utility model device;
[0026] Figure 2 This is a schematic diagram of the partial structure of the edge protection component of the utility model;
[0027] Figure 3 This is a schematic diagram of the connection structure between the stabilizing rod and the limiting button of the utility model;
[0028] Figure 4 For this utility model Figure 1 Schematic diagram of the structure at point A in the middle.
[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0030] 1. Circuit board assembly; 101. Circuit board body; 102. Mounting convex strip;
[0031] 2. Edge protection assembly; 201. Edge protection belt; 2021. Positioning screw; 202. Positioning hole; 203. Fixing splint; 204. Mounting slide; 205. Sol layer; 206. Connecting hole; 207. Stabilizing rod; 208. Connecting groove; 209. Telescopic rod; 210. Limit button; 211. Locking ring; 212. Tension spring; 213. Connecting button; 214. Limit button. DETAILED DESCRIPTION
[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1
[0033] See also Figure 1-4 As shown, the anti-deformation flexible circuit board proposed in this embodiment includes a circuit board assembly 1 and an edge protection assembly 2. The circuit board assembly 1 includes a circuit board body 101. The circuit board body 101 is specifically a flexible circuit board, which is a thin circuit board. It uses a flexible substrate instead of a traditional hard substrate. It is composed of a flexible insulating material (such as polyester film) and a conductive material (such as copper foil). It can adapt to electronic products of different shapes by folding, bending or curling. It has good flexibility and bendability, and can adapt to the design requirements of various complex shapes and space restrictions, thereby reducing the overall thickness and weight of electronic products. Compared with traditional hard boards, it is lighter and thinner, suitable for application scenarios with restrictions on weight and volume, such as portable devices, smart wearable devices, etc., and can achieve high-density line wiring, making the layout of electronic devices more compact, thereby improving the performance and functional integration of the circuit, and having better anti-interference ability when subjected to external forces such as vibration and impact. At the same time, it also reduces the reliability problems caused by components such as connectors. In addition, the flexible circuit board can be directly installed on a curved surface or a special-shaped component, so the assembly process of the product can be simplified, and the assembly cost and time can be reduced.
[0034] The edge protection assembly 2 includes an edge protection band 201 fixed to the side of the circuit board body 101, and a connecting hole 206 with two ends communicating with each other is opened in the edge protection band 201. A stabilizing rod 207 is movably sleeved in the connecting hole 206. The edge protection band 201 is made of rubber material and has certain wear resistance and resilience. It is installed on both sides of the circuit board body, so that when bending, its bending point is in an arc shape and has resilience, which can effectively prevent the circuit board body 101 from bending and can be freely adjusted according to the arc surface. At the same time, the stabilizing rod 207 is made of rigid material and can be qualitatively determined according to the arc surface after bending, so as to avoid the circuit board from being unable to be fully fixed and being easily torn and damaged when disassembling.
[0035] The working principle of the anti-deformation flexible circuit board proposed in this embodiment is as follows: when in use, firstly, flexible insulating materials and conductive materials need to be prepared, and according to the circuit design requirements, computer-aided design software is used to draw the wiring diagram of the circuit board, and the graphic information is transferred to the surface of the flexible insulating material using photolithography technology to form the required circuit pattern, and chemical copper plating is performed on the circuit pattern on the surface of the flexible insulating material to cover the conductive material on the pattern to form wires and pads, and unnecessary copper foil is removed using chemical stripping technology to retain the required circuit pattern, and holes are drilled on the flexible circuit board using laser drilling or mechanical drilling technology to connect circuits of different layers, and chemical copper plating is performed again on the surface of the circuit board to increase welding performance and protect the circuit, and then the flexible circuit board is cut into the required size and shape, and the manufactured flexible circuit board is subjected to Electrical testing is performed to ensure that the circuit connection is correct and there are no problems such as short circuit or open circuit. After the test is completed, a protective covering layer is applied to the surface of the circuit board to protect the circuit from the influence of the external environment. Then, edge protection strips are installed on both sides of the circuit board along its length direction, and the side of the circuit board is clamped by fixing the clamping plate 203. It is firmly clamped by pressing, and baked by a heat source to melt the sol layer 205 and completely bonded and fixed to the circuit board body 101. Then, the stabilizing rod 207 is inserted into the connecting hole 206, and the locking ring 211 is rotated and threaded at the interface of the connecting groove 208. The stabilizing rod 207 is initially fixed to ensure that the circuit board body 101 is in a stable state. Then the limiting button 214 is rotated to make it close to the tail end of the connecting button 213 to achieve secondary fixation of the circuit board body 101. Embodiment 2
[0036] See also Figure 1-4As shown, the anti-deformation flexible circuit board mentioned in this embodiment, on the basis of the first embodiment, also includes: a positioning hole 202 is opened on the edge protection belt 201, and a positioning screw 2021 is threadedly connected in the positioning hole 202, and a fixing clamp 203 is fixed on the side of the edge protection belt 201, and the fixing clamp 203 is clamped on the side of the circuit board body 101, and a mounting groove 204 is opened in the fixing clamp 203 and along its length direction, and a mounting convex strip 102 is opened on the side of the circuit board body 101 and along its length direction, and the mounting convex strip 102 is slidably connected in the mounting groove 204, and a sol layer 205 is fixed in the fixing clamp 203 and along its length direction, and the sol layer 205 is bonded to the circuit board body 1 01, connecting grooves 208 are provided at both ends of the stabilizing rod 207, and a telescopic rod 209 is movably sleeved in the connecting groove 208. A limit button 210 is fixed at one end of the telescopic rod 209, and the limit button 210 fits in the connecting groove 208. A locking ring 211 is movably sleeved at one end of the telescopic rod 209, and a tension spring 212 is movably sleeved on the side of the telescopic rod 209. The locking ring 211 is threadedly connected to the stabilizing rod 207, and the tension spring 212 fits between the connecting groove 208, the locking ring 211 and the limit button 210. A connecting button 213 is fixed at one end of the telescopic rod 209, and a limit button 214 is threadedly connected to the side of the connecting button 213, and the limit button 214 fits in the connecting hole 206.
[0037] In the present embodiment, the edge protection band 201 is specifically made of rubber material. When the circuit board body 101 is installed in the shell of the electronic device, the positioning screw 2021 passes through the shell and is threadedly connected in the positioning hole 202 to fix its position. The fixing clamp 203 is specifically made of aluminum material. After pressing, it can be firmly fixed to the side of the circuit board body 101, so as to achieve the function of fixing the edge protection band 201 after connecting with the circuit board body 101, and prevent the edge protection band 201 from detaching from the fixing clamp 203, and the welding technology can be used to completely fix the fixing clamp 203 and the circuit board body 101. The circuit board body 101 and the fixing clamp 203 are clamped in the installation groove 204 by the installation convex strip 102 for secondary fixation, which can effectively prevent the edge protection band 201 from detaching from the circuit board body 101. When the fixing clamp 203 is clamped and fixed to the side of the circuit board body 101, the sol layer 20 5 is attached to the side of the circuit board body 101 and is fixed by baking. When the telescopic rod 209 is pulled, the length is adjusted to meet the use of edge protection strips 201 of different lengths. At the same time, when the limit button 210 moves to the front end in the connecting groove 208, it plays a limiting role to prevent the telescopic rod 209 from being separated from the connecting groove 208. When the telescopic rod 209 is extended outward, the tension spring 212 is tightened. When the telescopic rod 209 loses the force, the tension spring 212 automatically rebounds and expands, which can tighten the circuit board body 101. By rotating the limit button 214, it moves back and forth on the side of the connecting button 213, so that when it is used on edge protection strips of different lengths, after the limit button 214 is completely entered into the connecting hole 206, the stabilizing rod 207 is limited and fixed in the edge protection strip 201 to prevent the stabilizing rod 207 from shaking in the edge protection strip 201.
[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A deformation-resistant flexible circuit board, comprising a circuit board assembly and an edge protection assembly, characterized in that: The circuit board assembly includes a circuit board body; The edge protection assembly comprises an edge protection belt fixed on the side of the circuit board body, a connecting hole with two ends communicating with each other is opened in the edge protection belt, and a stabilizing rod is movably sleeved in the connecting hole.
2. The anti-deformation flexible circuit board according to claim 1, characterized in that: A positioning hole is provided on the edge protection belt, and a positioning screw is threadedly connected in the positioning hole.
3. The anti-deformation flexible circuit board according to claim 1, characterized in that: A fixing clamping plate is fixed to the side of the edge protection belt, and the fixing clamping plate is clamped on the side of the circuit board body.
4. The anti-deformation flexible circuit board according to claim 3, characterized in that: The fixing clamping plate is provided with a mounting slide groove along its length direction, and the side of the circuit board body is provided with a mounting convex strip along its length direction, and the mounting convex strip is slidably connected in the mounting slide groove.
5. The anti-deformation flexible circuit board according to claim 4, characterized in that: A sol layer is fixed inside the fixing clamp and along its length direction, and the sol layer is bonded to the side of the circuit board body.
6. The anti-deformation flexible circuit board according to claim 1, characterized in that: The two ends of the stabilizing rod are provided with connecting grooves, a telescopic rod is movably sleeved in the connecting groove, a limit button is fixed at one end of the telescopic rod, and the limit button fits in the connecting groove.
7. The anti-deformation flexible circuit board according to claim 6, characterized in that: One end of the telescopic rod is movably sleeved with a locking ring, and the side of the telescopic rod is movably sleeved with a tension spring. The locking ring is threadedly connected to the stabilizing rod, and the tension spring is fitted between the connecting groove, the locking ring and the limit button.
8. The anti-deformation flexible circuit board according to claim 7, characterized in that: A connecting button is fixed at one end of the telescopic rod, a limiting button is threadedly connected to the side of the connecting button, and the limiting button fits in the connecting hole.