A multilayer flexible circuit board with adjustable spacing and angle brackets

Abstract

The present invention relates to the technical field of circuit board stacking, and in particular to a multilayer flexible circuit board with a bracket with adjustable spacing and angle, comprising a first flexible circuit board body and a second flexible circuit board body. The multilayer flexible circuit board with a bracket with adjustable spacing and angle of the present invention adopts a multilayer structural design, and uses elastic metal strips to connect and assemble adjacent flexible circuit board bodies, so as to facilitate the stacking of flexible circuit boards and make its application scope wider; the angle of the elastic metal strip is changed by adjusting the internal extrusion frame inside the lateral clamping frame, so that the spacing between different flexible circuit boards is adjustable, so that the installation application scope is wider and the adjustment operation is more convenient; by changing the installation method of the internal extrusion frame, not only the spacing between different flexible circuit boards can be adjusted, but also the firmness and stability of the circuit boards in the stacked state can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of circuit board stacking, in particular to a multi-layer flexible circuit board with brackets with adjustable spacing and angles. Background Art

[0002] Flexible circuit boards, also known as soft circuit boards and flexible circuit boards, are highly favored for their excellent properties such as light weight, thin thickness, and free bending and folding. With the rapid development of the electronics industry, circuit board design is becoming more and more high-precision and high-density. Traditional manual detection methods can no longer meet production needs, and automated detection of FPC defects has become an inevitable trend in industrial development.

[0003] Flexible circuit is a technology developed for the development of space rocket technology. It is a printed circuit with high reliability and excellent flexibility made of polyester film or polyimide as the substrate. By embedding the circuit design on the bendable thin plastic sheet, a large number of precision components can be stacked in a narrow and limited space to form a bendable flexible circuit. This kind of circuit can be bent and folded at will, with light weight, small size, good heat dissipation, and easy installation, breaking through the traditional interconnection technology. In the structure of the flexible circuit, the materials are insulating film, conductor and adhesive.

[0004] The current flexible circuit boards have a simple structure, mostly single-layer designs, and their height and angle cannot be adjusted, so their scope of application is limited, and their impact resistance is poor. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to solve the problems existing in the above-mentioned background technology, an improved multi-layer flexible circuit board with a bracket with adjustable spacing and angle is provided to solve the problems that the current flexible circuit boards have a simple structure, mostly adopt a single-layer structure design, the height and angle cannot be adjusted, the scope of application is limited, and the impact resistance is poor.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a multi-layer flexible circuit board with a bracket with adjustable spacing and angle, including a first flexible circuit board body and a second flexible circuit board body, the first flexible circuit board body is provided with a first strip-shaped receiving opening with multiple built-in elastic metal strips, the second flexible circuit board body is provided with a second strip-shaped receiving opening corresponding to the position of the first strip-shaped receiving opening, the upper surface of the first flexible circuit board body is located on both sides of the first strip-shaped receiving opening and is detachably fixed with a lateral clamping frame protruding upward, the second flexible circuit board body is provided with a circular through hole with a built-in elastic flanging strip on one side of the second strip-shaped receiving opening, the non-connecting section of the elastic metal strip is provided with a circular assembly hole matching the elastic flanging strip, and the second flexible circuit board body is connected to the elastic metal strip by inserting the elastic flanging strip into the circular assembly hole.

[0007] The right side of the lateral clamping frame is provided with a loading and unloading opening, the inner top surface of the lateral clamping frame is provided with a plurality of arc-shaped positioning slots, and the inner part of the lateral clamping frame is plugged with an internal extrusion frame for adjusting the angle of the elastic metal strip.

[0008] The upper surface of the elastic metal strip is located outside the circular assembly hole and has an integral structural convex point protruding upward. The first flexible circuit board body is provided with a positioning convex hole located outside the circular through hole and matching with the convex point. The elastic metal strip is inserted into the positioning convex hole through the convex point and is fixed to the first flexible circuit board body by clamping.

[0009] The internal extrusion frame comprises an N-shaped external extrusion frame and an integral internal positioning rod fixed on the inner side of the external extrusion frame. An elastic bending plate is inserted and fixed on the upper surface of the external extrusion frame.

[0010] An annular receiving groove is provided on the lower surface of the elastic metal strip at a position corresponding to the elastic flange strip, and the elastic flange strip is inserted into the annular receiving groove by bending and movably assembled with the elastic metal strip.

[0011] The front-to-rear width of the second strip-shaped receiving opening is greater than or equal to the sum of the front-to-rear width of the first strip-shaped receiving opening and the front-to-rear width of the lateral clamping frame.

[0012] The upper surface of the first flexible circuit board body has internal assembly holes with built-in elastic clip frames on both sides of the first strip-shaped storage opening, and the lower end of the side clip frame is provided with a bottom mounting slot of the built-in shrinking plate. The side clip frame is fixedly connected to the first flexible circuit board body by being sleeved on the elastic clip frame through the bottom mounting slot.

[0013] The elastic snap-fit ​​frame comprises a first curved limiting frame and a second curved limiting frame symmetrically arranged on both sides of the internal assembly hole.

[0014] The upper surface of the external extrusion frame is provided with an upper sliding slot for inserting and fixing the elastic bending plate.

[0015] The beneficial effects of the present invention are:

[0016] (1) The multi-layer flexible circuit board with adjustable spacing and angle brackets of the present invention adopts a multi-layer structure design, and uses elastic metal strips to connect and assemble adjacent flexible circuit board bodies, which facilitates stacking of flexible circuit boards and makes its application range wider;

[0017] (2) A lateral clamping frame with a built-in internal extrusion frame is detachably fixed on both sides of the first strip-shaped receiving opening on the upper surface of the first flexible circuit board body. The internal extrusion frame is adjusted inside the lateral clamping frame to change the angle of the elastic metal strip, so that the spacing between different flexible circuit boards can be adjusted, so that the installation application range is wider and the adjustment operation is more convenient;

[0018] (3) The second flexible circuit board body is connected to the elastic metal strip by inserting the elastic flange strip into the circular assembly hole, so that the angle of the second flexible circuit board body can be controlled and adjusted. At the same time, the convex point on the elastic metal strip is inserted into the positioning convex hole to fix the adjusted angle, so that the structure is more stable after the angle adjustment;

[0019] (4) By changing the installation method of the internal extrusion frame, not only can the spacing between different flexible circuit boards be adjusted, but the firmness and stability of the circuit boards in the stacked state can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 It is a structural schematic diagram of the present invention.

[0022] Figure 2 It is an internal cross-sectional view of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the internal extrusion frame in the present invention. DETAILED DESCRIPTION

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Figure 1 , Figure 2 and Figure 3A multilayer flexible circuit board with a spacing and angle adjustable bracket is shown, comprising a first flexible circuit board body 1 and a second flexible circuit board body 2, the first flexible circuit board body 1 is provided with a first strip receiving opening 4 with two built-in elastic metal strips 3, the second flexible circuit board body 2 is provided with a second strip receiving opening 5 corresponding to the first strip receiving opening 4, the upper surface of the first flexible circuit board body 1 is located on both sides of the first strip receiving opening 4 and is detachably fixed with a lateral clamping frame 6 protruding upward, a circular through hole 8 with a built-in elastic flanging strip 7 is provided on one side of the second strip receiving opening 5, the non-connecting section of the elastic metal strip 3 is provided with a circular assembly hole 9 matching the elastic flanging strip 7, and the second flexible circuit board body 2 is connected to the elastic metal strip 3 by inserting the elastic flanging strip 7 into the circular assembly hole 9.

[0027] Furthermore, in order to facilitate loading and unloading and internal positioning, a loading and unloading opening is provided on the right side of the lateral clamping frame 6, three arc-shaped positioning slots 10 are provided on the inner top surface of the lateral clamping frame 6, and an internal extrusion frame 11 for adjusting the angle of the elastic metal strip 3 is inserted inside the lateral clamping frame 6.

[0028] Working principle: The internal extrusion frame 11 is inserted into the lateral clamping frame 6 from the loading and unloading opening to extrude the elastic metal strip 3, thereby adjusting the distance between the first flexible circuit board body 1 and the second flexible circuit board body 2, and then the arc-shaped positioning slot 10 is used to fix the limit.

[0029] Furthermore, in order to facilitate angle adjustment and improve the structural stability after adjustment, the upper surface of the elastic metal strip 3 is located outside the circular assembly hole 9 and has an upwardly protruding integrated structural protrusion 12, and the first flexible circuit board body 1 is located outside the circular through hole and has a positioning protrusion 13 that matches the protrusion 12. The elastic metal strip 3 is inserted into the positioning protrusion 13 through the protrusion 12 and is clamped and fixed to the first flexible circuit board body 1.

[0030] The elastic metal strip 3 is sleeved on the outer side of the elastic flange strip 7 through the circular assembly hole 9, so that the top end of the elastic flange strip 7 provides position limiting support for the lower end of the elastic metal strip 3.

[0031] Furthermore, in order to cooperate with the installation and elastic extrusion support, the internal extrusion frame 11 includes an N-shaped external extrusion frame 14 and an integral internal positioning rod 15 fixed on the inner side of the external extrusion frame 14. An elastic bending plate 16 is inserted and fixed on the upper surface of the external extrusion frame 14. Furthermore, in order to improve the fit and anti-loosening properties during assembly, an annular storage groove 17 is provided on the lower surface of the elastic metal strip 3 at the position corresponding to the elastic flange strip 7. The elastic flange strip 7 is bent and inserted into the annular storage groove 17 to be movably assembled with the elastic metal strip 3.

[0032] Furthermore, in order to facilitate the fit during stacking, the front-to-back width of the second strip storage opening 5 is greater than or equal to the sum of the front-to-back width of the first strip storage opening 4 and the front-to-back width of the lateral snap-in frame 6. Furthermore, in order to facilitate installation and disassembly, the upper surface of the first flexible circuit board body 1 has internal assembly holes 19 with built-in elastic snap-in frames 18 on both sides of the first strip storage opening 4, and a bottom mounting slot 20 with a built-in shrinking plate is provided at the lower end of the lateral snap-in frame 6. The lateral snap-in frame 6 is fixedly connected to the first flexible circuit board body 1 by being sleeved on the elastic snap-in frame 18 through the bottom mounting slot 20.

[0033] Furthermore, in order to enhance the lateral elastic extrusion limit, the elastic snap-in frame 18 includes a first curved limit frame and a second curved limit frame symmetrically arranged on both sides of the internal assembly hole 19. Furthermore, in order to cooperate with the top loading and unloading fixation, the upper surface of the external extrusion frame 14 is provided with an upper sliding slot 21 for plugging and fixing the elastic bending plate 16.

[0034] A multilayer flexible circuit board with a bracket with adjustable spacing and angle of the present invention adopts a multilayer structure design, and uses elastic metal strips 3 to connect and assemble adjacent flexible circuit board bodies, so that the flexible circuit boards can be stacked conveniently, making its application range wider; on the upper surface of the first flexible circuit board body 1, a lateral clamping frame 6 with a built-in internal extrusion frame 11 is detachably fixed on both sides of the first strip-shaped receiving port 4, and the angle of the elastic metal strip 3 is changed by adjusting the internal extrusion frame 11 inside the lateral clamping frame 6, so that the spacing between different flexible circuit boards is adjustable, making its installation application range wider and the adjustment operation more convenient; the second flexible circuit board body 2 is connected to the elastic metal strip 3 by inserting the elastic flange strip 7 into the circular assembly hole 9, so that the angle of the second flexible circuit board body 2 can be controlled to be adjusted, and the convex point 12 on the elastic metal strip 3 is inserted into the positioning convex hole 13 to fix and limit the adjusted angle, so that the structure is more stable after the angle adjustment; by changing the installation method of the internal extrusion frame 11, not only the spacing between different flexible circuit boards can be adjusted, but also the firmness and stability of the circuit board in the stacked state can be improved.

[0035] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A multi-layer flexible circuit board with a bracket having adjustable spacing and angle, comprising a first flexible circuit board body (1) and a second flexible circuit board body (2), characterized in that: The first flexible circuit board body (1) is provided with a first strip-shaped receiving opening (4) with a plurality of built-in elastic metal strips (3); the second flexible circuit board body (2) is provided with a second strip-shaped receiving opening (5) at a position corresponding to the first strip-shaped receiving opening (4); the upper surface of the first flexible circuit board body (1) is provided with detachably fixed lateral clamping frames (6) protruding upwards on both sides of the first strip-shaped receiving opening (4); the second flexible circuit board body (2) is provided with a circular through hole (8) with a built-in elastic flange strip (7) on one side of the second strip-shaped receiving opening (5); the non-connecting section of the elastic metal strip (3) is provided with a circular assembly hole (9) matching with the elastic flange strip (7); the second flexible circuit board body (2) is connected to the elastic metal strip (3) by inserting the elastic flange strip (7) into the circular assembly hole (9); The right side of the lateral snap-in frame (6) is provided with a loading and unloading opening, the inner top surface of the lateral snap-in frame (6) is provided with a plurality of arc-shaped positioning slots (10), and the inner part of the lateral snap-in frame (6) is plugged with an internal extrusion frame (11) for adjusting the angle of the elastic metal strip (3); The upper surface of the first flexible circuit board body (1) is provided with internal assembly holes (19) with built-in elastic snap-fit ​​frames (18) on both sides of the first strip-shaped receiving opening (4); the lower end of the lateral snap-fit ​​frame (6) is provided with a bottom mounting slot (20) with a built-in shrinking plate; the lateral snap-fit ​​frame (6) is sleeved on the elastic snap-fit ​​frame (18) through the bottom mounting slot (20) and is fixedly connected to the first flexible circuit board body (1).

2. The multi-layer flexible circuit board with a bracket with adjustable spacing and angle according to claim 1 is characterized in that: The upper surface of the elastic metal strip (3) is provided with an integral structural protrusion (12) protruding upwards, located at the periphery of the circular assembly hole (9); a positioning protrusion (13) matching the protrusion (12) is provided on the first flexible circuit board body (1) at the periphery of the circular through hole (8); the elastic metal strip (3) is inserted into the positioning protrusion (13) through the protrusion (12) and is fixedly connected to the first flexible circuit board body (1).

3. The multi-layer flexible circuit board with a bracket with adjustable spacing and angle according to claim 1, characterized in that: The internal extrusion frame (11) comprises an N-shaped external extrusion frame (14) and an integral internal positioning rod (15) fixed on the inner side of the external extrusion frame (14); an elastic bending plate (16) is inserted and fixed on the upper surface of the external extrusion frame (14).

4. The multi-layer flexible circuit board with a bracket with adjustable spacing and angle according to claim 1 is characterized in that: An annular receiving groove (17) is provided below the elastic metal strip (3) at a position corresponding to the elastic flange strip (7), and the elastic flange strip (7) is inserted into the annular receiving groove (17) by bending to be movably assembled with the elastic metal strip (3).

5. The multi-layer flexible circuit board with a bracket with adjustable spacing and angle according to claim 1, characterized in that: The front-to-back width of the second strip-shaped receiving opening (5) is greater than or equal to the sum of the front-to-back width of the first strip-shaped receiving opening (4) and the front-to-back width of the lateral clamping frame (6).

6. The multi-layer flexible circuit board with adjustable spacing and angle according to claim 1, characterized in that: The elastic snap-fit ​​frame (18) comprises a first curved limit frame and a second curved limit frame symmetrically arranged on both sides of the internal assembly hole (19).

7. The multi-layer flexible circuit board with a bracket with adjustable spacing and angle according to claim 3 is characterized in that: An upper sliding slot (21) for inserting and fixing the elastic bending plate (16) is provided on the upper surface of the external extrusion frame (14).

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