CN211792242U - Flexible circuit board and drilling jig thereof - Google Patents

Abstract

The utility model discloses a flexible line way board and drilling jig thereof, flexible line way board includes circuit board and golden finger, the golden finger passes through the conducting strip setting on the circuit board, the surface covering that the circuit board corresponds the golden finger has the insulating layer, the last correspondence of golden finger has seted up tin through hole to the periphery that corresponds tin through hole is provided with the insulating collar, the both sides that the circuit board corresponds the golden finger are provided with the perforation to wear to be equipped with flexible branch strip through the perforation. This flexible line way board and drilling tool thereof is convenient for to flexible line way board location back drilling, and drilling stability is good, reduces the flexible line way board because of the probability that the drilling appears damaging, improves flexible line way board production efficiency.

Description

Flexible circuit board and drilling jig thereof

Technical Field

The utility model relates to a flexible line way board technical field specifically is a flexible line way board and drilling jig thereof.

Background

The flexible circuit board (FPC for short) has the advantages of high wiring density, light weight, thin thickness, small wiring space limitation, high flexibility and the like, completely accords with the development trend of light, thin, short and small electronic products, and is widely applied to the fields of PCs, peripheral products, communication products, electric vehicle battery management systems, consumer electronic products and the like. The flexible circuit board generally includes gold fingers for electrical connection to components such as a motherboard. In the design of the FPC, a respective round hole is usually processed for the solder penetration of the golden finger needing to be welded in the welding process, a certain distance needs to be reserved between the processed round hole and the edge of the golden finger due to the limitation of the alignment precision of the FPC manufacturing process, however, when the golden finger is fine and the width of the golden finger is small, the required distance is difficult to reserve, the sufficient distance can be reserved by reducing the aperture of the round hole, and the problem of poor solder penetration of the FPC in the subsequent welding process can be caused. Secondly, in the FPC production process, when the circular hole is processed by laser, the table top is burned due to the residual energy of the laser, so that the table top is damaged, and waste residues are generated during burning of the table top and are attached to the edge of the hole of the FPC, so that adhesive residue is formed on the FPC. In addition, in the prior art, in the process of connecting the flexible circuit board and the main board, the welding position on the flexible circuit board and the expected welding position on the main board are easy to deviate, so that welding dislocation between the flexible circuit board and the main board is caused, and the performance of the whole product is affected.

The prior patent application No. 201720788027.0 discloses a flexible circuit board and a drilling jig thereof, which are easy to scrap due to the movement of the circuit board during laser drilling when the flexible circuit board is drilled, and the drilling stability of the circuit board is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a flexible line way board convenient to location, that the tin effect is good thoroughly to solve the problem that proposes in the above-mentioned background art.

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 circuit board and golden finger, the golden finger passes through the conducting strip setting on the circuit board, the surface covering that the circuit board corresponds the golden finger has the insulating layer, the last correspondence of golden finger has seted up the tin hole that passes through to the periphery that corresponds the tin hole is provided with the insulating ring, the both sides that the circuit board corresponds the golden finger are provided with the perforation to wear to be equipped with flexible branch strip through the perforation.

Furthermore, the tin-permeable holes are equidistantly arranged on the golden finger in a waist shape according to requirements.

Furthermore, the inner diameter of the flexible branch is 0.2mm, and the flexible branch is arranged in a resin material structure.

The utility model also aims to provide a drilling jig which has good stability for drilling the flexible circuit board and improves the drilling efficiency,

in order to realize the above-mentioned purpose, the utility model also discloses a be used for a flexible line way board change hole tool, including base and the resin board that corresponds with the circuit board, the draw-in groove that corresponds with the resin board is seted up to the terminal surface of base, the resin board passes through the draw-in groove and the base is fixed to be clamped, set up on the resin board with the drilling that leads to tin pore pair to it is provided with the steel sheet to correspond the drilling periphery.

Furthermore, a cavity is formed in the bottom of the clamping groove through a base, an exhaust pipe is arranged on the base corresponding to the cavity, and the exhaust pipe is connected with an exhaust fan.

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

1. the utility model discloses the side that corresponds the golden finger at the circuit board sets up flexible branch through the perforation, flexible branch penetrates inside the perforation, the golden finger on the circuit board is by the drilling back, take flexible branch out in the perforation once more, reuse, the aim at of flexible branch is fixed to circuit board and golden finger drilling department, when avoiding the golden finger to be drilled, thereby the circuit board removes and leads to the golden finger to remove, cause drilling badly, the golden finger corresponds tin-permeable hole periphery and sets up the insulating ring, when the circuit board passes through tin-permeable hole and component welding, the insulating ring is accepted to unnecessary tin insulation, avoid the tin to cause the circuit overlap joint and the short circuit on the circuit board.

2. The utility model discloses the resin plate corresponds the drilling periphery and sets up the steel sheet, and the air exhauster is gone on when the circuit board is drilled and is extracted wind-force through the exhaust column, and to the heat extraction discharge that the circuit board produced by laser drilling, the tin hole periphery is protected when the steel sheet is to circuit board laser drilling, avoids the circuit board to be produced the phenomenon that bursts by drilling.

Drawings

Fig. 1 is a schematic diagram of the circuit board structure of the present invention;

FIG. 2 is a schematic view of the longitudinal cross-sectional structure of FIG. 1 according to the present invention;

FIG. 3 is a schematic view of the structure of the base end surface of the present invention;

fig. 4 is a schematic view of the structure of fig. 3 in longitudinal section according to the present invention.

In the figure: 1, a circuit board; 2, a golden finger; 3, conducting strips; 4 an insulating layer; 5, tin penetration holes; 6, an insulating ring; 7, perforating; 8, flexible branch bars; 9 a base; 10 a resin plate; 11 card slots; 12, drilling a hole; 13 steel plate; 14 a cavity; 15 air exhaust pipes; 16 exhaust fan.

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.

Referring to fig. 1-2, a flexible circuit board includes a circuit board 1 and a gold finger 2, the gold finger 2 is disposed on the circuit board 1 through a conductive sheet 3, an insulating layer 4 covers a surface of the circuit board 1 corresponding to the gold finger 2, a tin-permeable hole 5 is correspondingly disposed on the gold finger 2, an insulating ring 6 is disposed around the tin-permeable hole 5, two sides of the circuit board 1 corresponding to the gold finger 2 are provided with through holes 7, and a flexible support bar 8 is penetrated through the through holes 7.

Specifically, the tin-permeable holes 5 are equidistantly arranged on the gold finger 2 in a waist shape according to requirements. The waist-shaped tin penetration holes 5 facilitate the soldering of the circuit board 1 and the element through the tin penetration holes 5.

Specifically, the inner diameter of the flexible branch bar 8 is 0.2mm, and the flexible branch bar 8 is arranged in a resin material structure. The connection between the circuit board 1 and the golden finger 2 is not affected while the flexible branch 8 supports the connection between the circuit board 1 and the golden finger 2, and the flexible branch 8 can be extracted and recycled after the circuit board 1 is drilled.

Referring to fig. 3-4, the utility model also discloses a drilling jig that is good to flexible line way board drilling stability, improves drilling efficiency, including base 9 and the resin board 10 that corresponds with circuit board 1, the draw-in groove 11 that corresponds with resin board 10 is seted up to the terminal surface of base 9, resin board 10 is fixed to clamp through draw-in groove 11 and base 9, set up the drilling 12 that corresponds with tin hole 5 on the resin board 10 to it is provided with steel sheet 13 to correspond drilling 12 periphery.

Further, a cavity 14 is formed in the bottom of the clamping groove 11 through a base 9, an exhaust pipe 15 is arranged on the base 9 corresponding to the cavity 14, and an exhaust fan 16 is connected with the exhaust pipe 15 in a communicating mode. The exhaust fan 16 is arranged by a small TS-200 centrifugal fan.

During the use, penetrate flexible branch 8 through perforation 7 at the circuit board 1 with 2 junctions of golden finger, the circuit board 1 that penetrates flexible branch 8 places the position that the golden finger 2 needs to drill hole corresponding drilling 12, exhaust fan 16 moves and produces extraction wind-force to cavity 14 inside through exhaust column 15, extraction wind-force is adsorbed on resin plate 10 through drilling 12 to circuit board 1, the operation of the laser drilling structure above base 9 is to the golden finger 2 drilling operation on circuit board 1, exhaust fan 16 moves when drilling of circuit board 1 and extracts wind-force through exhaust column 15, heat extraction discharge that circuit board 1 is produced by laser drilling, steel sheet 13 is to the peripheral protection of tin hole 5 when circuit board 1 laser drilling, avoid circuit board 1 to be produced the phenomenon of bursting by the drilling.

In summary, the following steps: this titanium plate cutting device through circuit board 1, golden finger 2, conducting strip 3, insulating layer 4, tin hole 5, insulating circle 6, perforation 7, flexible branch 8, base 9, resin board 10, draw-in groove 11, drilling 12, steel sheet 13, cavity 14, exhaust column 15, exhaust fan 16 between mutually supporting, has solved the problem that proposes among the above-mentioned background art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a flexible line way board, includes circuit board (1) and golden finger (2), its characterized in that: golden finger (2) set up on circuit board (1) through conducting strip (3), the surface covering that circuit board (1) corresponds golden finger (2) has insulating layer (4), the corresponding tin hole (5) of having seted up on golden finger (2) to the periphery that corresponds tin hole (5) is provided with insulating collar (6), the both sides that circuit board (1) corresponds golden finger (2) are provided with perforation (7) to wear to be equipped with flexible branch strip (8) through perforation (7).

2. The flexible wiring board of claim 1, wherein: the tin-permeable holes (5) are arranged on the golden finger (2) in a waist shape at equal intervals according to requirements.

3. The flexible wiring board of claim 1, wherein: the inner diameter of the flexible branch strip (8) is 0.2mm, and the flexible branch strip (8) is arranged in a resin material structure.

4. A drilling jig for a flexible wiring board according to any one of claims 1 to 3, characterized in that: the tin-plated circuit board is characterized by comprising a base (9) and a resin plate (10) corresponding to a circuit board (1), wherein a clamping groove (11) corresponding to the resin plate (10) is formed in the end face of the base (9), the resin plate (10) is fixedly clamped with the base (9) through the clamping groove (11), a drilling hole (12) corresponding to a tin-permeable hole (5) is formed in the resin plate (10), and a steel plate (13) is arranged on the periphery of the drilling hole (12).

5. The drilling jig of claim 4, wherein: the bottom in the clamping groove (11) is provided with a cavity (14) through a base (9), the base (9) is provided with an exhaust pipe (15) corresponding to the cavity (14), and the exhaust pipe (15) is connected with an exhaust fan (16).

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