CN209748886U

CN209748886U - Flexible circuit board

Info

Publication number: CN209748886U
Application number: CN201821737847.8U
Authority: CN
Inventors: 胡照志
Original assignee: Shenzhen Kangruibe Electronic Technology Co Ltd
Current assignee: Shenzhen Kangruibe Electronic Technology Co Ltd
Priority date: 2018-10-25
Filing date: 2018-10-25
Publication date: 2019-12-06
Anticipated expiration: 2028-10-25

Abstract

The utility model belongs to the technical field of flexible circuit boards, in particular to a flexible circuit board, which comprises a flexible circuit board and a circuit board main body, wherein one side of the flexible circuit board is provided with a golden finger, the golden finger is provided with a first semicircle, the circuit board main body is provided with a connecting groove, and a first bonding pad and a second bonding pad are arranged in the connecting groove; through the golden finger, first pad, the second pad, first semicircle, the combined action of second semicircle and spread groove, fixed column on the second pad is fixed with the fixed orifices on the golden finger, first pad and second pad are welded through soldering tin in first semicircle and second semicircle respectively, can not make the flexible line way board in long-time frequent removal or coiling cause the not hard up of welding position, more can not cause the breaking away from between flexible line way board and the circuit board main part, the normal work of circuit board main part and flexible line way board has been guaranteed, maintenance personnel's maintenance is not needed, maintenance personnel's working strength has also been reduced.

Description

Flexible circuit board

Technical Field

The utility model belongs to the technical field of the flexible line way board, concretely relates to flexible line way board.

Background

The flexible circuit board is a unique solution method meeting the requirements of miniaturization and movement of electronic products, can be freely bent, wound and folded, can bear hundreds of thousands of dynamic bending without damaging a lead, can be randomly arranged according to the space layout requirement, and can be freely moved and stretched in a three-dimensional space, thereby achieving the integration of component assembly and lead connection; the flexible circuit board can greatly reduce the volume and the weight of the electronic product, and is suitable for the development of the electronic product towards high density, miniaturization and high reliability.

The golden finger on the present flexible line way board is when being connected with the circuit board main part, and the following problem exists in the prior art:

1. most of the golden fingers on the flexible circuit board are connected with the circuit board main body in a welding mode, in the long-time use process, the frequent movement or winding of the flexible circuit board can cause the loosening of the welding position, and even cause the separation between the flexible circuit board and the circuit board main body, at the moment, maintenance personnel are required to maintain, the welding position of the general circuit board main body and the flexible circuit board support is small, the maintenance personnel need to spend a large amount of time to maintain, the working strength of the maintenance personnel is increased, and certain damage is caused to other elements on the circuit board main body during maintenance;

2. Most flexible line way board can produce a large amount of heats in long-time working process, the heat dissipation untimely can cause thermal piling up, other components on the flexible line way board can be caused irrecoverable injury by a large amount of thermal piling up, also can cause the injury to the equipment of installation flexible line way board, cause the waste of resource, and flexible line way board and circuit board main part are when connecting, the welded position needs to spend a large amount of time to confirm, a large amount of time has been wasted, work efficiency when having reduced the welding.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides a flexible line way board has the fixed column that the second pad set up on fixed orifices on the golden finger and the circuit board main part and fixes, has guaranteed under long-time use, can not cause the separation of golden finger and circuit board main part, has reduced maintenance personal's working strength and heat dissipation characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a flexible line way board, includes flexible line way board and circuit board main part, one side of flexible line way board is provided with the golden finger, be provided with first semicircle and fixed orifices on the golden finger, the spread groove has been seted up in the circuit board main part, be provided with first pad and second pad in the spread groove, be provided with the fixed column on the second pad, be provided with the second semicircle on the first pad, the flexible line way board includes waterproof coating layer, one side of waterproof coating layer is provided with the substrate, one side of substrate is provided with the second transparent adhesive tape, one side of second transparent adhesive tape is provided with the copper foil, one side of copper foil is provided with first transparent adhesive tape, the heating panel has been seted up to one side of first transparent adhesive tape, one side of heating panel is provided with the protection film, the.

preferably, pad holes are formed in the second transparent adhesive, the heat dissipation plate and the protection film, and pad plating layers are arranged in the pad holes.

Preferably, one side of the second bonding pad is welded with one side of the first semicircle through soldering tin, the fixing column penetrates through the fixing hole, and one side of the first bonding pad is welded with the second semicircle through soldering tin.

Preferably, the number of the first semicircles is 2, and the number of the first pads is 2.

Preferably, the first transparent adhesive tape and the second transparent adhesive tape are made of the same material, and the first transparent adhesive tape is made of polyethylene.

Preferably, the base material is polyimide, and the first semicircles are distributed on two sides of the flexible circuit board.

Preferably, the heat dissipation holes are uniformly distributed on the protective film.

Compared with the prior art, the beneficial effects of the utility model are that:

1. The utility model discloses, through the golden finger, first pad, the second pad, first semicircle, the combined action of second semicircle and spread groove, fixed column on the second pad is fixed with the fixed orifices on the golden finger, first pad welds through the tin welding with first semicircle, the second pad welds through soldering tin with the second semicircle, can not make the flexible line way board cause the not hard up of welding position in long-time frequent removal or coiling, can not cause breaking away from between flexible line way board and the circuit board main part even more, the normal work of circuit board main part and flexible line way board has been guaranteed, maintenance personal's maintenance is not needed, maintenance personal's working strength has also been reduced, first semicircle has been injectd with the position of second semicircle butt welding, avoid spending a large amount of time when the welding and have gone to confirm and need the welded position, a large amount of time has been saved.

2. The utility model discloses, the setting of heating panel and louvre can with flexible line way board upper element on the heat that long-time work produced transmit the heating panel through the transmission of first transparent adhesive tape, in the heating panel transmits the heat dissipation hole that sets up on the protection film with the heat, the heat passes through the louvre and gives off and goes in the external world, can not lead to the fact the harm of flexible line way board or circuit board main part because of a large amount of thermal accumulations, guaranteed the life of flexible line way board or circuit board main part.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

Fig. 1 is a schematic structural view of the present invention from the top;

FIG. 2 is an enlarged schematic structural view of the position A of the present invention;

fig. 3 is a schematic view of the front view section structure of the flexible printed circuit board of the present invention.

In the figure: 1. a bonding pad plating layer; 2. a pad hole; 3. heat dissipation holes; 4. a protective film; 5. a heat dissipation plate; 6. a first transparent adhesive tape; 7. copper foil; 8. a second transparent adhesive tape; 9. a substrate; 10. a waterproof coating layer; 11. a first pad; 12. a golden finger; 13. a first semicircle; 14. a flexible circuit board; 15. connecting grooves; 16. a circuit board main body; 17. a second pad; 18. fixing a column; 19. a second semicircle; 20. and (7) fixing holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions: the utility model provides a flexible circuit board, including flexible circuit board 14 and circuit board main part 16, one side of flexible circuit board 14 is provided with golden finger 12, be provided with first semicircle 13 and fixed orifices 20 on the golden finger 12, spread groove 15 has been seted up on the circuit board main part 16, be provided with first pad 11 and second pad 17 in the spread groove 15, be provided with fixed column 18 on the second pad 17, be provided with second semicircle 19 on the first pad 11, flexible circuit board 14 includes waterproof coating layer 10, one side of waterproof coating layer 10 is provided with the substrate, one side of substrate is provided with the second clear adhesive, one side of second clear adhesive is provided with the copper foil, one side of copper foil is provided with first clear adhesive, one side of first clear adhesive is provided with the heating panel, one side of heating panel is provided with the protection film, the louvre.

Specifically, through the combined action of the golden finger 12, the first pad 11, the second pad 17, the first semicircle 13, the second semicircle 19 and the connecting groove 15, the fixed column 18 on the second pad 17 is fixed with the fixed hole 20 on the golden finger 12, the first pad 11 and the second pad 17 are welded through soldering tin respectively in the first semicircle 13 and the second semicircle 19, the flexible circuit board 14 is not loosened at the welding position due to long-time frequent movement or winding, the separation between the flexible circuit board 14 and the circuit board main body 16 is not caused, the normal work of the circuit board main body 16 and the flexible circuit board 14 is ensured, the maintenance of maintenance personnel is not needed, and the working strength of the maintenance personnel is also reduced.

Specifically, the second transparent adhesive 8, the heat dissipation plate 5 and the protection film 4 are provided with pad holes 2, pad plating layers 1 are arranged in the pad holes 2, the pad holes 2 facilitate welding of the LED lamp or other elements needing to be welded, and due to the arrangement of the pad plating layers 1 in the pad holes, the conductivity of the copper foil 7 and the LED lamp or other elements needing to be welded is further guaranteed.

Specifically, one side of second pad 17 and one side of first semicircle 13 weld through soldering tin, fixed column 18 wears to establish in fixed orifices 20, and one side of first pad 11 and second semicircle 19 weld through soldering tin, the setting of first semicircle 13 and second semicircle 19, the welded position has been fixed, the error of welding position has been reduced, the setting of first pad 11 and second pad 17 has supported and is fixed first semicircle 13 and second semicircle 19, welding position's stability has been guaranteed.

Specifically, the number of the first semicircles 13 is 2, the number of the first bonding pads 11 is 2, and the first semicircles 13 are distributed on two sides of the flexible circuit board 14, so that the flexible circuit board 14 cannot move towards two sides of the flexible circuit board 14 in the moving or winding process, and the welding stability is ensured.

Specifically, the first transparent adhesive tape 6 and the second transparent adhesive tape 8 are made of the same material, the first transparent adhesive tape 6 is made of polyethylene, the polyethylene is good in impact resistance, insulativity and thermal conductivity, and can be insulated and conduct heat to generated heat when being pasted, so that the normal operation of heat dissipation is guaranteed.

Specifically, the base material 9 is polyimide, the first semicircles 13 are distributed on two sides of the flexible printed circuit board 14, the polyimide is a high-temperature-resistant and high-strength polymer material, and the tensile strength of the polyimide is high, so that the copper foil 7 in the flexible printed circuit board 14 can be protected.

Specifically, the heat dissipation holes 3 are uniformly distributed on the protection film 4, and the heat dissipation holes 3 are uniformly distributed on the protection film, so that heat can be uniformly distributed.

The utility model discloses a theory of operation and use flow: the utility model discloses, golden finger 12 on the flexible line way board 14 is connected with circuit board main part 16 through spread groove 15, first pad 11 carries out the overlap joint with first semicircle 13, fixed column 18 on the second pad 17 wears to establish in fixed orifices 20 on golden finger 12, make second pad 17 and golden finger 12 contact, weld first semicircle 13 and second semicircle 19 through soldering tin, accomplish flexible line way board 14 and circuit board main part 16's being connected, at flexible line way board 14 during operation, the component work that lies in pad hole 2 on the flexible line way board 14 produces certain heat, the heat is transmitted to heating panel 5 through first transparent adhesive tape 6 on, the heat on the heating panel 5 goes in giving off the external world through louvre 3, thermal giving off has been accomplished, protection film 4 has protected flexible line way board 14.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A flexible wiring board comprising a flexible wiring board (14) and a circuit board main body (16), characterized in that: a golden finger (12) is arranged on one side of the flexible circuit board (14), a first semicircle (13) and a fixing hole (20) are arranged on the golden finger (12), a connecting groove (15) is formed in the circuit board main body (16), a first bonding pad (11) and a second bonding pad (17) are arranged in the connecting groove (15), a fixing column (18) is arranged on the second bonding pad (17), a second semicircle (19) is arranged on the first bonding pad (11), the flexible circuit board (14) comprises a waterproof coating layer (10), a base material (9) is arranged on one side of the waterproof coating layer (10), a second transparent adhesive (8) is arranged on one side of the base material (9), a copper foil (7) is arranged on one side of the second transparent adhesive (8), a first transparent adhesive (6) is arranged on one side of the copper foil (7), and a heat dissipation plate (5) is arranged on one side of the first transparent adhesive (6), one side of the heat dissipation plate (5) is provided with a protection film (4), and the protection film (4) is provided with heat dissipation holes (3).

2. The flexible wiring board of claim 1, wherein: and the second transparent adhesive tape (8), the heat dissipation plate (5) and the protection film (4) are provided with pad holes (2), and pad plating layers (1) are arranged in the pad holes (2).

3. the flexible wiring board of claim 1, wherein: one side of the second bonding pad (17) is welded with one side of the first semicircle (13) through soldering tin, the fixing column (18) penetrates through the fixing hole (20), and one side of the first bonding pad (11) is welded with the second semicircle (19) through soldering tin.

4. the flexible wiring board of claim 1, wherein: the number of the first semi-circles (13) is 2, and the number of the first pads (11) is 2.

5. The flexible wiring board of claim 1, wherein: the first transparent adhesive tape (6) and the second transparent adhesive tape (8) are made of the same material, and the first transparent adhesive tape (6) is made of polyethylene.

6. The flexible wiring board of claim 1, wherein: the base material (9) is polyimide, and the first semicircles (13) are distributed on two sides of the flexible circuit board (14).

7. The flexible wiring board of claim 1, wherein: the heat dissipation holes (3) are uniformly distributed on the protective film (4).