Flexible circuit board with double-layer link structure

Abstract

The utility model discloses a flexible circuit board with a double-layer link structure, which relates to the technical field of flexible circuit boards, and comprises a first board body, a second board body is arranged below the first board body, one end of the first board body is connected with one end of the second board body through a flexible connecting board, and the other end of the first board body is connected with the second board body through a second connecting board. Mounting notches are formed in the corners of the first plate body and the second plate body, the mounting notches are arc-shaped, a fixing groove is formed in one side of the mounting notch of the second plate body and vertically penetrates through the second plate body, a fixing part is arranged on one side of the mounting notch of the first plate body, and the fixing part comprises a connecting base and a limiting assembly. According to the scheme, the problems that an existing flexible circuit board is single in hierarchical structure, and large-area requirements are achieved by increasing the overall area of the flexible circuit board, so that the occupied area is large, the flexible circuit board is not suitable for the size of a product conveniently, and applicability and flexibility are poor are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit boards, in particular to a flexible circuit board with a double-layer link structure. Background Art

[0002] Flexible circuit boards, also known as "soft boards," are printed circuits made of flexible insulating substrates. Flexible circuits offer excellent electrical performance, meeting the design needs of smaller and higher-density installations. They also help reduce assembly processes and enhance reliability. They can be bent, wound, and folded freely, and can withstand millions of dynamic bends without damaging the wires.

[0003] For example, the Chinese patent (Flexible Circuit Board) with publication number CN205546193U describes a flexible circuit board having a functional area for mounting components, with windows defined around at least a portion of the perimeter of the functional area. When the flexible circuit board is bent, the area with the windows is relatively thin, and the flexible circuit board bends from the windows, thereby ensuring a relatively flat surface within the functional area. This prevents deformation or breakage of the pins of components soldered within the functional area, thereby extending the service life of the components mounted on the flexible circuit board and improving the reliability of the flexible circuit board. Furthermore, since the flexible circuit board does not increase in thickness, it can be used in thinner products.

[0004] However, the existing flexible circuit board has a single hierarchical structure. When a large area is required, it is necessary to increase the overall area of ​​the flexible circuit board, which takes up less space and is inconvenient to adapt to the size of the product, resulting in poor applicability and flexibility. Therefore, it does not meet the existing needs. In this regard, we propose a flexible circuit board with a double-layer link structure. Utility Model Content

[0005] The purpose of the present utility model is to provide a flexible circuit board with a double-layer link structure to solve the problem raised in the above-mentioned background art that the existing flexible circuit board has a single layer structure. When a large area is required, it is necessary to increase the overall area of ​​the flexible circuit board, which takes up a lot of space and is inconvenient to adapt to the size of the product, resulting in poor applicability and flexibility.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A flexible circuit board with a double-layer link structure, comprising: a first plate body, a second plate body is arranged below the first plate body, one end of the first plate body and the second plate body are connected by a flexible connecting plate, the first plate body and the second plate body are both provided with mounting notches at their corners, and the mounting notches are arc-shaped, a fixing groove is provided on one side of the mounting notch of the second plate body, and the fixing groove passes through the second plate body up and down, and a fixing portion is provided on one side of the mounting notch of the first plate body.

[0007] Preferably, the fixing portion includes a connecting seat and a limiting assembly, and the limiting assembly is located at the lower end of the connecting seat, and a gap groove is provided at the center of the connecting seat.

[0008] Preferably, the limiting assembly includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are both fixed to the connecting seat by hot melt, an extrusion groove is provided between the first protrusion and the second protrusion, and the extrusion groove is communicated with the gap groove, and the limiting assembly passes through the fixing groove.

[0009] Preferably, a first protective plate is provided at the upper end of the connection between the flexible connecting plate and the first plate body, and a second protective plate is provided at the lower end of the connection between the flexible connecting plate and the second plate body.

[0010] Preferably, one end surface of the first protective plate and the second protective plate are both provided with fixing glue, and the first protective plate and the second protective plate are respectively bonded and fixed to the first plate body and the second plate body by the fixing glue.

[0011] Preferably, a connection notch is provided on one side surface of each of the first plate body and the second plate body, and both ends of the flexible connection plate are respectively installed in the connection notch of the first plate body and the second plate body.

[0012] Preferably, the flexible connection board is a flexible circuit board, and the first board body and the second board body are also flexible circuit boards.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The present invention connects the first plate body and the second plate body through a flexible connecting plate, and realizes the folding of the first plate body and the second plate body through the flexible connecting plate, and folds them into an up-and-down stacking effect, so that large-area wiring is realized and a small space is occupied. The flexible connecting plate is used for connection instead of directly folding the flexible circuit board. If the flexible circuit board is folded directly, the bending angle at the connection point will be too large, which will squeeze the circuit and easily damage it. The flexible connecting plate will not bend at a large angle after bending, so that it is not easy to damage the internal circuit, ensuring the connection of the first plate body and the second plate body circuits, thereby ensuring normal use, improving applicability and flexibility, and solving the problem that the existing flexible circuit board has a single hierarchical structure and needs to increase the overall area of ​​the flexible circuit board when a large area is required, which leads to occupied space and inconvenience in adapting to the size of the product, resulting in poor applicability and flexibility.

[0015] 2. A fixing part is provided on one side of the installation notch of the first plate body. After the first plate body and the second plate body are bent, the limiting component of the fixing part is inserted along the fixing groove. The limiting effect is achieved by the rebound effect after contraction, so that the fixing groove is limited, and the first plate body and the second plate body are fixed, which is not easy to loosen, thereby improving the connection stability during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the utility model when viewed from above;

[0018] Figure 3 This is a schematic structural diagram of the fixing portion of the present utility model;

[0019] Figure 4 This is a schematic diagram of the lower surface structure of the first protective plate of the present invention;

[0020] In the figure: 1. First plate body; 2. Second plate body; 3. Flexible connecting plate; 4. First protective plate; 5. Fixing part; 6. Mounting notch; 7. Fixing groove; 8. Connecting seat; 9. Limiting assembly; 10. First protruding seat; 11. Gap groove; 12. Fixing glue; 13. Second protective plate; 14. Extrusion groove; 15. Second protruding seat; 16. Connecting notch. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-4 , the utility model provides an embodiment: a flexible circuit board with a double-layer link structure, comprising: a first board body 1, a second board body 2 is arranged below the first board body 1, one end of the first board body 1 and the second board body 2 are connected by a flexible connecting board 3, the first board body 1 and the second board body 2 are both provided with mounting notches 6 at the corners, and the mounting notches 6 are arc-shaped, a fixing groove 7 is provided on one side of the mounting notch 6 of the second board body 2, and the fixing groove 7 passes through the second board body 2 up and down, a fixing portion 5 is provided on one side of the mounting notch 6 of the first board body 1, one side surface of the first board body 1 and the second board body 2 are both provided with connecting notches 16, and the two ends of the flexible connecting board 3 are respectively installed in the connecting notches 16 of the first board body 1 and the second board body 2, the flexible connecting board 3 adopts a flexible circuit board, and the first board body 1 and the second board body 2 are also flexible circuit boards.

[0023] The first board 1 and the second board 2 are folded by the flexible connecting board 3, and folded into an upper and lower stacking effect, with a double-layer link structure, so that large-area wiring is achieved and a small space is occupied. The connection is made through the flexible connecting board 3 instead of directly folding the flexible circuit board. If the flexible circuit board is folded directly, the bending angle at the connection point will be too large, causing squeezing of the circuit and easy damage. The connection is made through the flexible connecting board 3. After bending, the flexible connecting board 3 will not bend at a large angle, so it is not easy to damage the internal circuit, thereby ensuring that the circuits of the first board 1 and the second board 2 are connected, thereby ensuring normal use and improving applicability and flexibility.

[0024] See also Figure 1 、 2 3. The fixing portion 5 includes a connecting seat 8 and a limiting component 9, and the limiting component 9 is located at the lower end of the connecting seat 8. A gap groove 11 is provided at the center of the connecting seat 8. The limiting component 9 includes a first protruding seat 10 and a second protruding seat 15, and the first protruding seat 10 and the second protruding seat 15 are both hot-melt fixed to the connecting seat 8. An extrusion groove 14 is provided between the first protruding seat 10 and the second protruding seat 15, and the extrusion groove 14 is communicated with the gap groove 11. The limiting component 9 passes through the fixing groove 7. After the first plate body 1 and the second plate body 2 are bent, the limiting component 9 has a limiting effect on the fixing groove 7, so that the first plate body 1 and the second plate body 2 are fixed, not easy to loosen, and the connection stability during use is improved.

[0025] See also Figure 1 、 2 , 4. A first protective plate 4 is provided at the upper end of the connection between the flexible connecting plate 3 and the first plate body 1, and a second protective plate 13 is provided at the lower end of the connection between the flexible connecting plate 3 and the second plate body 2. One end surface of the first protective plate 4 and the second protective plate 13 are provided with fixing glue 12, and the first protective plate 4 and the second protective plate 13 are respectively bonded and fixed to the first plate body 1 and the second plate body 2 by the fixing glue 12. The first protective plate 4 and the second protective plate 13 have a protective effect on the connection between the two ends of the flexible connecting plate 3, thereby improving safety.

[0026] Working principle: When in use, the two ends of the flexible connecting plate 3 are respectively installed in the connecting notch 16 of the first plate body 1 and the second plate body 2, and the first plate body 1 and the second plate body 2 are connected by relying on the flexible connecting plate 3. The first plate body 1 and the second plate body 2 are folded by the flexible connecting plate 3, and folded into an up and down stacking effect, with a double-layer link structure, so that large-area wiring is achieved and a small space is occupied. The flexible connecting plate 3 is used for connection instead of directly folding the flexible circuit board. If the flexible circuit board is folded directly, the bending angle of the connection point will be too large, causing squeezing of the circuit and easy damage. The flexible connecting plate 3 is used for connection. After bending, the flexible connecting plate 3 will not bend at a large angle, so it is not easy to damage the internal circuit, ensuring that the circuits of the first plate body 1 and the second plate body 2 are connected, thereby ensuring normal use and improving applicability and flexibility.

[0027] After the first plate body 1 and the second plate body 2 are bent, the limiting component 9 is inserted along the fixing groove 7. During the insertion, the first external protrusion 10 and the second external protrusion 15 are subjected to force and are retracted along the extrusion groove 14. After passing through the fixing groove 7, the extrusion force is lost and the plate body rebounds to the initial position, thereby limiting the fixing groove 7, thereby fixing the first plate body 1 and the second plate body 2, preventing them from loosening, and improving the connection stability during use.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A flexible circuit board with a double-layer link structure, comprising a first board body (1), characterized in that: A second plate body (2) is provided below the first plate body (1), one end of the first plate body (1) and the second plate body (2) are connected via a flexible connecting plate (3), a mounting notch (6) is provided at the corner of each of the first plate body (1) and the second plate body (2), and the mounting notch (6) is arc-shaped, a fixing groove (7) is provided on one side of the mounting notch (6) of the second plate body (2), and the fixing groove (7) passes through the second plate body (2) from top to bottom, and a fixing portion (5) is provided on one side of the mounting notch (6) of the first plate body (1).

2. The flexible circuit board with a double-layer link structure according to claim 1, characterized in that: The fixing portion (5) comprises a connecting seat (8) and a limiting assembly (9), wherein the limiting assembly (9) is located at the lower end of the connecting seat (8), and a gap groove (11) is provided at the center of the connecting seat (8).

3. The flexible circuit board with a double-layer link structure according to claim 2, characterized in that: The limiting assembly (9) comprises a first external protrusion (10) and a second external protrusion (15), and the first external protrusion (10) and the second external protrusion (15) are both fixed to the connecting seat (8) by hot melt, an extrusion groove (14) is provided between the first external protrusion (10) and the second external protrusion (15), and the extrusion groove (14) is interconnected with the gap groove (11), and the limiting assembly (9) passes through the fixing groove (7).

4. The flexible circuit board with a double-layer link structure according to claim 1, characterized in that: A first protective plate (4) is provided at the upper end of the connection between the flexible connecting plate (3) and the first plate body (1), and a second protective plate (13) is provided at the lower end of the connection between the flexible connecting plate (3) and the second plate body (2).

5. The flexible circuit board with a double-layer link structure according to claim 4, characterized in that: One end surface of the first protective plate (4) and the second protective plate (13) are both provided with fixing glue (12), and the first protective plate (4) and the second protective plate (13) are respectively bonded and fixed to the first plate body (1) and the second plate body (2) via the fixing glue (12).

6. The flexible circuit board with a double-layer link structure according to claim 1, characterized in that: A connection notch (16) is provided on one side surface of the first plate body (1) and the second plate body (2), and two ends of the flexible connection plate (3) are respectively installed in the connection notch (16) of the first plate body (1) and the second plate body (2).

7. The flexible circuit board with a double-layer link structure according to claim 1, characterized in that: The flexible connection board (3) is a flexible circuit board, and the first board body (1) and the second board body (2) are also flexible circuit boards.

Images