Multi-layer flexible circuit board structure with mistake-proofing function

Abstract

The utility model discloses a multi-layer flexible circuit board structure with a wrong layer prevention function, which comprises a circuit board main body, and the circuit board main body is composed of a first circuit board, a second circuit board, a third circuit board and a fourth circuit board. A second circuit board is mounted at the top of the first circuit board, a third circuit board is mounted at the top of the second circuit board, and a fourth circuit board is mounted at the top of the third circuit board; a first mistake proofing assembly is arranged between the first circuit board and the second circuit board, a second mistake proofing assembly is arranged between the second circuit board and the third circuit board, and a third mistake proofing assembly is arranged between the third circuit board and the fourth circuit board. According to the utility model, through the arrangement of the first mistake-proofing assembly, the second mistake-proofing assembly and the third mistake-proofing assembly, the first circuit board with the square positioning block is placed at the bottommost part, and subsequent installation is operated in a rapid positioning mode, so that not only is the installation portability improved, but also the mistake-proofing function can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a multi-layer flexible circuit board structure with an anti-mismatching function. Background Art

[0002] Flexible circuit boards are made of polyimide or polyester film as substrates. They are highly reliable and extremely flexible printed circuit boards with high wiring density, light weight, thin thickness, and good bending properties. The application of multi-layer flexible circuit boards is becoming more and more mature. During production, multiple substrate layers need to be stacked together and edge-sealed. In order to prevent stacking, it is necessary to keep the adjacent layers accurate during installation of the multi-layer flexible circuit boards to avoid stacking disorder.

[0003] The current multi-layer flexible circuit board does not have an anti-misalignment structure during installation. It is easy for users to ignore the simple markings, which still causes misalignment of the installed circuit board, resulting in poor use effect and inconvenience in rapid positioning and installation.

[0004] Therefore, there is an urgent need to provide a multi-layer flexible circuit board structure with an anti-mismatching function to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the current multi-layer flexible circuit board does not have an anti-misalignment structure during installation. It is easy to be overlooked by users based on simple markings, which still causes misalignment of the installed circuit board, resulting in poor use effect and inconvenience in rapid positioning and installation.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a multi-layer flexible circuit board structure with an anti-mismatching function, including a circuit board body, wherein the circuit board body is composed of a first circuit board, a second circuit board, a third circuit board and a fourth circuit board;

[0007] A second circuit board is mounted on the top of the first circuit board, a third circuit board is mounted on the top of the second circuit board, and a fourth circuit board is mounted on the top of the third circuit board;

[0008] A first error prevention component is arranged between the first circuit board and the second circuit board, a second error prevention component is arranged between the second circuit board and the third circuit board, and a third error prevention component is arranged between the third circuit board and the fourth circuit board.

[0009] The utility model is further configured as follows: the first error-proofing component includes a plurality of square positioning blocks fixedly connected to the top of the first circuit board, and a plurality of first positioning grooves corresponding to the square positioning blocks are opened at the bottom of the second circuit board.

[0010] Through the above technical solution, the first circuit board with the square positioning block is placed at the bottom, and then the second circuit board with the first positioning groove corresponding to the square positioning block is installed on the top of the first circuit board to complete the installation of the first circuit board and the second circuit board.

[0011] The utility model is further configured as follows: the second error-proofing component includes a T-shaped positioning block fixedly connected to the top of the second circuit board, and the bottom of the third circuit board is provided with a plurality of second positioning grooves corresponding to the T-shaped positioning block.

[0012] By adopting the above technical solution, the third circuit board with the second positioning groove corresponding to the T-shaped positioning block is installed on the top of the second circuit board, thereby completing the installation of the second circuit board and the third circuit board.

[0013] The utility model is further configured as follows: the third error-proofing component includes a plurality of triangular positioning blocks fixedly connected to the top of the third circuit board, and a plurality of third positioning grooves corresponding to the triangular positioning blocks are opened at the bottom of the fourth circuit board.

[0014] By adopting the above technical solution, the fourth circuit board with the third positioning groove corresponding to the triangular positioning block is installed on the top of the third circuit board, thereby completing the installation of the third circuit board and the fourth circuit board.

[0015] The utility model is further configured as follows: an insulating layer is also installed on the top of the fourth circuit board, and a waterproof layer is fixedly connected to the top of the insulating layer.

[0016] Through the above technical solution, the fourth circuit board can have stronger insulation performance and stronger waterproof function, thereby improving the service life of the circuit board body.

[0017] The utility model is further configured as follows: the insulating layer is made of rubber.

[0018] Through the above technical solution, the insulating layer made of rubber has strong insulation performance and is a flexible structure, which not only improves the safety of use and prevents leakage, but also ensures flexible use effect.

[0019] The utility model is further configured as follows: the waterproof layer is made of polyurethane.

[0020] Through the above technical solution, the waterproof layer made of polyurethane can have a strong waterproof effect, preventing the circuit board body from short-circuiting after contacting water.

[0021] The beneficial effects of the utility model are as follows:

[0022] 1. The utility model provides the first error-proofing component, the second error-proofing component and the third error-proofing component, so that the staff can better operate when installing the circuit board body. It only needs to place the first circuit board with the square positioning block at the bottom, and the subsequent installation is operated by a quick positioning method, which not only improves the portability of the installation, but also can play the function of preventing the wrong layer;

[0023] 2. The utility model provides a fourth circuit board, so that the circuit board body has a stronger insulation performance and a stronger waterproof function, thereby improving the service life of the circuit board body and ensuring the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the appearance diagram of the utility model;

[0025] Figure 2 This is an exploded view from the first perspective of the present utility model;

[0026] Figure 3 This is an exploded view from a second perspective of the present invention;

[0027] Figure 4 This is a cross-sectional view of a fourth circuit board of the present utility model.

[0028] In the figure: 1. circuit board body; 2. first circuit board; 21. first error-proofing component; 2101. square positioning block; 2102. first positioning groove; 3. second circuit board; 31. second error-proofing component; 3101. T-shaped positioning block; 3102. second positioning groove; 4. third circuit board; 41. third error-proofing component; 4101. triangular positioning block; 4102. third positioning groove; 5. fourth circuit board; 501. insulating layer; 502. waterproof layer. DETAILED DESCRIPTION

[0029] 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 definite definition of the protection scope of the present invention.

[0030] See also Figure 1-Figure 4A multi-layer flexible circuit board structure with an error-proofing function includes a circuit board body 1, which is composed of a first circuit board 2, a second circuit board 3, a third circuit board 4 and a fourth circuit board 5; the second circuit board 3 is installed on the top of the first circuit board 2, the third circuit board 4 is installed on the top of the second circuit board 3, and the fourth circuit board 5 is installed on the top of the third circuit board 4; a first error-proofing component 21 is arranged between the first circuit board 2 and the second circuit board 3, a second error-proofing component 31 is arranged between the second circuit board 3 and the third circuit board 4, and a third error-proofing component 41 is arranged between the third circuit board 4 and the fourth circuit board 5;

[0031] The first error-proofing component 21 includes a plurality of square positioning blocks 2101 fixedly connected to the top of the first circuit board 2, and a plurality of first positioning grooves 2102 corresponding to the square positioning blocks 2101 are provided at the bottom of the second circuit board 3; the first circuit board 2 with the square positioning blocks 2101 is placed at the bottom, and then the second circuit board 3 with the first positioning grooves 2102 corresponding to the square positioning blocks 2101 is installed on the top of the first circuit board 2, so that the installation of the first circuit board 2 and the second circuit board 3 can be completed;

[0032] The second error-proofing component 31 includes a T-shaped positioning block 3101 fixedly connected to the top of the second circuit board 3, and a plurality of second positioning grooves 3102 corresponding to the T-shaped positioning block 3101 are provided at the bottom of the third circuit board 4; the third circuit board 4 with the second positioning grooves 3102 corresponding to the T-shaped positioning block 3101 is installed on the top of the second circuit board 3, so that the installation of the second circuit board 3 and the third circuit board 4 can be completed;

[0033] The third error-proofing component 41 includes a plurality of triangular positioning blocks 4101 fixedly connected to the top of the third circuit board 4, and a plurality of third positioning grooves 4102 corresponding to the triangular positioning blocks 4101 are provided at the bottom of the fourth circuit board 5; the fourth circuit board 5 with the third positioning grooves 4102 corresponding to the triangular positioning blocks 4101 is installed on the top of the third circuit board 4, so that the installation of the third circuit board 4 and the fourth circuit board 5 can be completed;

[0034] An insulating layer 501 is also installed on the top of the fourth circuit board 5, and a waterproof layer 502 is fixedly connected to the top of the insulating layer 501; so that the fourth circuit board 5 can have a strong insulation performance and a strong waterproof function, thereby improving the service life of the circuit board body 1;

[0035] The insulating layer 501 is made of rubber; the insulating layer 501 made of rubber has strong insulation performance and is a flexible structure, which not only improves the safety of use, prevents leakage, but also ensures the flexible use effect;

[0036] The waterproof layer 502 is made of polyurethane, so that the waterproof layer 502 made of polyurethane can have a strong waterproof effect to prevent the circuit board body 1 from short-circuiting after contacting water.

[0037] When the utility model is in use, firstly, the first circuit board 2 with the square positioning block 2101 is placed at the bottom, and then the second circuit board 3 with the first positioning groove 2102 corresponding to the square positioning block 2101 is installed on the top of the first circuit board 2. The operations are carried out in sequence to install the third circuit board 4 with the second positioning groove 3102 corresponding to the T-shaped positioning block 3101 on the top of the second circuit board 3, and install the fourth circuit board 5 with the third positioning groove 4102 corresponding to the triangular positioning block 4101 on the top of the third circuit board 4. The installer only needs to remember that the first circuit board 2 with the square positioning block 2101 is located at the bottom to complete the installation. It has a good anti-mismatching function and does not require multi-layer marking.

[0038] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-layer flexible circuit board structure with an anti-misalignment function, comprising a circuit board body (1), characterized in that: The circuit board body (1) is composed of a first circuit board (2), a second circuit board (3), a third circuit board (4) and a fourth circuit board (5); A second circuit board (3) is mounted on the top of the first circuit board (2), a third circuit board (4) is mounted on the top of the second circuit board (3), and a fourth circuit board (5) is mounted on the top of the third circuit board (4); A first error prevention component (21) is arranged between the first circuit board (2) and the second circuit board (3), a second error prevention component (31) is arranged between the second circuit board (3) and the third circuit board (4), and a third error prevention component (41) is arranged between the third circuit board (4) and the fourth circuit board (5).

2. The multi-layer flexible circuit board structure with anti-mismatch function according to claim 1, characterized in that: The first error-proofing component (21) comprises a plurality of square positioning blocks (2101) fixedly connected to the top of the first circuit board (2), and the bottom of the second circuit board (3) is provided with a plurality of first positioning grooves (2102) corresponding to the square positioning blocks (2101).

3. The multi-layer flexible circuit board structure with anti-mismatch function according to claim 1, characterized in that: The second error prevention component (31) comprises a T-shaped positioning block (3101) fixedly connected to the top of the second circuit board (3), and a plurality of second positioning grooves (3102) corresponding to the T-shaped positioning block (3101) are provided at the bottom of the third circuit board (4).

4. The multi-layer flexible circuit board structure with anti-mismatching function according to claim 1, characterized in that: The third error-proofing component (41) comprises a plurality of triangular positioning blocks (4101) fixedly connected to the top of the third circuit board (4), and a plurality of third positioning grooves (4102) corresponding to the triangular positioning blocks (4101) are formed at the bottom of the fourth circuit board (5).

5. The multi-layer flexible circuit board structure with anti-mismatching function according to claim 1, characterized in that: An insulating layer (501) is also installed on the top of the fourth circuit board (5), and a waterproof layer (502) is fixedly connected to the top of the insulating layer (501).

6. The multi-layer flexible circuit board structure with anti-mismatch function according to claim 5, characterized in that: The insulating layer (501) is made of rubber.

7. The multi-layer flexible circuit board structure with anti-mismatching function according to claim 5, characterized in that: The waterproof layer (502) is made of polyurethane.

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