Ultrathin tensile flexible circuit board

Abstract

The utility model relates to the technical field of flexible circuit boards, in particular to an ultrathin stretch-resistant flexible circuit board, which comprises a circuit board body, golden fingers are arranged on the surface of the circuit board body, conductive contacts are arranged on the surfaces of the golden fingers, stretch-resistant mechanisms are arranged on the surface of the circuit board body, and the conductive contacts are arranged on the surfaces of the stretch-resistant mechanisms. The tensile mechanism includes a tensile edge. According to the utility model, the two sides of the circuit board body are arranged to be the stretch-resistant edges, the silica gel layer is adhered to the bottom of the circuit board body, the silica gel edges are adhered to the bottoms of the stretch-resistant edges, the silica gel layer is limited by using the studs, the limiting nuts and the limiting sheets, and the stretch-resistant edges, the silica gel layer and the silica gel edges are matched with one another, so that the waterproof performance of the circuit board is improved. The tensile strength of the circuit board body is improved, the risk of breakage of the tensile circuit board body is avoided, and the service life of the circuit board body is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of flexible circuit board technology, specifically to an ultra-thin, tensile-resistant flexible circuit board. Background Technology

[0002] Flexible printed circuit boards (FPCs), also known as "flexible boards," are printed circuits made of flexible insulating substrates. Due to their unique advantages of being flexible, thin, and having high wiring density, FPCs have been widely used in drones and aircraft data loggers.

[0003] During flight, drones constantly change their attitude and may make rapid turns, ascents and descents. Aircraft also encounter turbulence during flight, which can subject flexible circuit boards to significant tensile forces. Existing flexible circuit boards commonly use flexible insulating substrates such as polyimide (PI) or polyester (PET), which, although possessing a certain degree of flexibility, have limited tensile strength. When subjected to large tensile forces, flexible circuit boards are prone to breakage, reducing their lifespan. Utility Model Content

[0004] The purpose of this invention is to provide an ultra-thin, tensile-resistant flexible circuit board to solve the problem mentioned in the background art that the existing flexible circuit boards have weak tensile strength and are prone to breakage when subjected to large tensile forces during drone flight, thus reducing the service life of the flexible circuit boards.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ultra-thin, tensile-resistant flexible circuit board, comprising a circuit board body, gold fingers disposed on the surface of the circuit board body, conductive contacts disposed on the surface of the gold fingers, an anti-tensile mechanism disposed on the surface of the circuit board body, the anti-tensile mechanism including anti-tensile edges disposed on both sides of the circuit board body, a silicone layer adhesively connected to the bottom of the circuit board body, silicone edges fixedly connected to both sides of the silicone layer, a stud fixedly connected to the bottom of the circuit board body, a limit nut threadedly connected to the surface of the stud, and a limit piece fixedly connected to the surface of the limit nut.

[0006] Preferably, an anti-loosening mechanism is provided on the surface of the gold finger, the anti-loosening mechanism including a limiting protrusion, the limiting protrusion being fixedly connected to the surface of the gold finger.

[0007] Preferably, both the tensile edge and the silicone edge are serrated, and the serrated edges of the tensile edge and the silicone edge are rounded. The tensile edge and the silicone edge overlap on both sides of the circuit board body, and the silicone edge is also glued to the bottom of the tensile edge.

[0008] Preferably, multiple sets of studs are provided and evenly distributed on the bottom of the circuit board body, and multiple sets of circular holes are opened on the surface of the silicone layer. The studs are inserted into the circular holes of the silicone layer, and the height of the studs is the same as the height of the circular holes of the silicone layer.

[0009] Preferably, the diameter of the limiting piece is larger than the diameter of the stud, and the limiting nut is pressed against the surface of the silicone layer by the stud.

[0010] Preferably, multiple sets of conductive contacts and limiting protrusions are provided, and the multiple sets of conductive contacts and limiting protrusions are arranged alternately on the gold finger.

[0011] Preferably, the limiting protrusion is flat and is made of rubber.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This flexible circuit board features tensile-resistant edges on both sides of the board body. A silicone layer is then glued to the bottom of the board body, with the silicone edges glued to the bottom of the tensile-resistant edges. Studs are inserted into the circular holes in the silicone layer for easy positioning of the silicone layer and edges. A limiting nut, in conjunction with the studs, causes a limiting piece to press the silicone layer against the bottom of the board body, ensuring its stability. The tensile-resistant edges, located at the edges of the board body, absorb tensile force due to deformation of the internal circuit board body, thus increasing the tensile strength of the board body. Furthermore, the silicone layer at the bottom of the board body cushions the stretching of the board body through deformation, further enhancing its tensile strength. The silicone edges on both sides of the silicone layer, along with the tensile-resistant edges, buffer the large tensile forces on the board body, preventing breakage and extending its service life.

[0014] 2. This flexible circuit board has multiple sets of limiting protrusions on the gold fingers, and the limiting protrusions and conductive contacts are arranged alternately. The limiting protrusions are flat in shape, and when the gold fingers are connected to the interface, the elastic force of the limiting protrusions can press them against the interface to prevent the gold fingers from becoming loose, thereby improving the stability of the gold fingers at the interface. Attached Figure Description

[0015] Figure 1 This is a three-dimensional front view of the structure of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the present invention, viewed from below.

[0017] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A;

[0018] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0019] Figure 5 The diagram shows the structure of this utility model from the front, bottom, and cross-section views, as well as an exploded three-dimensional view.

[0020] In the diagram: 1. Circuit board body; 11. Gold finger; 12. Conductive contact; 2. Tensile edge; 21. Silicone layer; 22. Silicone edge; 23. Stud; 24. Limit nut; 25. Limiting piece; 3. Limiting protrusion. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-5 One embodiment provided by this utility model:

[0023] An ultra-thin, tensile-resistant flexible circuit board includes a circuit board body 1, gold fingers 11 on the surface of the circuit board body 1, conductive contacts 12 on the surface of the gold fingers 11, a tensile-resistant mechanism on the surface of the circuit board body 1, the tensile-resistant mechanism including tensile-resistant edges 2, the tensile-resistant edges 2 being disposed on both sides of the circuit board body 1, a silicone layer 21 adhesively bonded to the bottom of the circuit board body 1, silicone edges 22 fixedly connected to both sides of the silicone layer 21, a stud 23 fixedly connected to the bottom of the circuit board body 1, a limit nut 24 threadedly connected to the surface of the stud 23, and a limit nut 24 fixedly connected to the surface of the limit nut 24. Position piece 25, this tensile-resistant mechanism, sets the two sides of the circuit board body 1 as tensile-resistant edges 2, enhancing the tensile resistance of the circuit board body 1 edges, and a silicone layer 21 is provided at the bottom of the circuit board body 1 for cushioning. The silicone layer 21 is firmly glued to the bottom of the circuit board body 1, which can buffer the large tensile force on the circuit board body 1, avoid the risk of the circuit board body 1 breaking due to tensile force, and extend the service life of the circuit board body 1. Furthermore, the position of the silicone layer 21 at the bottom of the circuit board body 1 is further restricted by the stud 23, the limiting nut 24 and the limiting piece 25, ensuring the stability of the silicone layer 21 at the bottom of the circuit board body 1.

[0024] Furthermore, an anti-loosening mechanism is provided on the surface of the gold finger 11. The anti-loosening mechanism includes a limiting protrusion 3, which is fixedly connected to the surface of the gold finger 11. This anti-loosening mechanism improves the connection stability of the gold finger 11 and reduces the loosening phenomenon of the gold finger 11 at the interface by squeezing the gold finger 11 at the access point through the limiting protrusion 3.

[0025] Furthermore, both the tensile edge 2 and the silicone edge 22 are serrated. The material of the tensile edge 2 is the same as that of the circuit board body 1. The tensile edge 2 increases the tensile strength of the circuit board body 1, and the tensile edge 2 will deform first of the circuit board body 1 to consume some of the tensile force. The silicone edge 22 increases the tensile strength of the silicone layer 21, and the serrated edges of the tensile edge 2 and the silicone edge 22 are rounded to avoid injury to the user. The tensile edge 2 and the silicone edge 22 overlap on both sides of the circuit board body 1, and the silicone edge 22 is also glued to the bottom of the tensile edge 2. The tensile edge 2, the silicone layer 21 and the silicone edge 22 greatly improve the tensile strength of the circuit board body 1.

[0026] Furthermore, multiple sets of studs 23 are provided and evenly distributed on the bottom of the circuit board body 1. Multiple sets of circular holes are opened on the surface of the silicone layer 21. The studs 23 are inserted into the circular holes of the silicone layer 21, and the height of the studs 23 is the same as the height of the circular holes of the silicone layer 21. The studs 23 position the silicone layer 21 at the bottom of the circuit board body 1, reducing the difficulty of installing the silicone layer 21.

[0027] Furthermore, the diameter of the limiting piece 25 is larger than the diameter of the stud 23, and the limiting nut 24 is pressed against the surface of the silicone layer 21 by the stud 23. At this time, the limiting nut 24 is at the bottom of the circuit board body 1, which improves the stability of the silicone layer 21 and the silicone edge 22 at the bottom of the circuit board body 1.

[0028] Furthermore, multiple sets of conductive contacts 12 and limiting protrusions 3 are provided, and the multiple sets of conductive contacts 12 and limiting protrusions 3 are arranged alternately on the gold finger 11. The multiple sets of limiting protrusions 3 can enter the interface of the corresponding gold finger 11 when the gold finger 11 is installed.

[0029] Furthermore, the limiting protrusion 3 is flat and made of rubber. The limiting protrusion 3 presses against the interface of the corresponding gold finger 11 through its own deformation force, thereby preventing the gold finger 11 from becoming loose.

[0030] Working principle: Tensile-resistant edges 2 are set on both sides of the circuit board body 1. A silicone layer 21 is glued to the bottom of the circuit board body 1, and a silicone edge 22 is glued to the bottom of the tensile-resistant edge 2. A stud 23 is inserted into the circular hole of the silicone layer 21 for easy positioning of the silicone layer 21 and the silicone edge 22. A limiting nut 24, in conjunction with the stud 23, causes a limiting piece 25 to press the silicone layer 21 against the bottom of the circuit board body 1, ensuring the stability of the silicone layer 21 at the bottom of the circuit board body 1. The tensile-resistant edge 2 is located at the edge of the circuit board body 1, and will be affected by the inner... The circuit board body 1 deforms, consuming tensile force and thus increasing the tensile strength of the circuit board body 1. The silicone layer 21 at the bottom of the circuit board body 1 buffers the stretching of the circuit board body 1 through deformation, thereby further increasing the tensile strength of the circuit board body 1. The silicone layer 21 is provided with silicone edges 22 on both sides. The silicone layer 21 and the tensile edges 22 buffer the circuit board body 1, which can buffer the large tensile force on the circuit board body 1, avoid the risk of the circuit board body 1 breaking due to tensile force, and extend the service life of the circuit board body 1.

[0031] Multiple sets of limiting protrusions 3 are set on the gold finger 11, and the limiting protrusions 3 and the conductive contact 12 are arranged alternately. The limiting protrusions 3 are flat in shape, and when the gold finger 11 is connected to the interface, the elastic force of the limiting protrusions 3 can press it on the interface, thereby preventing the gold finger 11 from becoming loose and improving the stability of the gold finger 11 at the interface.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An ultra-thin, tensile-resistant flexible circuit board, characterized in that: The circuit board includes a circuit board body (1), on the surface of which gold fingers (11) are provided, and on the surface of which conductive contacts (12) are provided, and on the surface of which an anti-tensile mechanism is provided, the anti-tensile mechanism including an anti-tensile edge (2) is provided on both sides of the circuit board body (1), a silicone layer (21) is glued to the bottom of the circuit board body (1), silicone edges (22) are fixedly connected to both sides of the silicone layer (21), a stud (23) is fixedly connected to the bottom of the circuit board body (1), a limit nut (24) is threadedly connected to the surface of the stud (23), and a limit piece (25) is fixedly connected to the surface of the limit nut (24).

2. The ultra-thin, tensile-resistant flexible circuit board according to claim 1, characterized in that: An anti-loosening mechanism is provided on the surface of the gold finger (11). The anti-loosening mechanism includes a limiting protrusion (3), which is fixedly connected to the surface of the gold finger (11).

3. The ultra-thin, tensile-resistant flexible circuit board according to claim 1, characterized in that: The tensile edge (2) and the silicone edge (22) are both serrated, and the serrated edges of the tensile edge (2) and the silicone edge (22) are rounded. The tensile edge (2) and the silicone edge (22) overlap on both sides of the circuit board body (1), and the silicone edge (22) is also glued to the bottom of the tensile edge (2).

4. The ultra-thin, tensile-resistant flexible circuit board according to claim 3, characterized in that: The studs (23) are provided in multiple sets and are evenly distributed on the bottom of the circuit board body (1). Multiple sets of circular holes are opened on the surface of the silicone layer (21). The studs (23) are inserted into the circular holes of the silicone layer (21), and the height of the studs (23) is the same as the height of the circular holes of the silicone layer (21).

5. The ultra-thin, tensile-resistant flexible circuit board according to claim 4, characterized in that: The diameter of the limiting piece (25) is larger than the diameter of the stud (23), and the limiting nut (24) is pressed against the surface of the silicone layer (21) by the stud (23).

6. The ultra-thin, tensile-resistant flexible circuit board according to claim 2, characterized in that: The conductive contacts (12) and limiting protrusions (3) are provided in multiple sets, and the multiple sets of conductive contacts (12) and limiting protrusions (3) are arranged alternately on the gold fingers (11).

7. The ultra-thin, tensile-resistant flexible circuit board according to claim 6, characterized in that: The limiting protrusion (3) is flat and is made of rubber.

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