CN218334370U

CN218334370U - Switching device for FPC

Info

Publication number: CN218334370U
Application number: CN202222689498.XU
Authority: CN
Inventors: 罗伯特·林; 贺宇飞
Original assignee: Taicang Shenlian Technology Co ltd
Current assignee: Taicang Shenlian Technology Co ltd
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-01-17
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a switching device for FPC, including setting up in the first pad and the second pad of circuit board, through circuit board point connection between first pad and the second pad, first pad welds in FPC's one end, the second pad is connected with the terminal row, the terminal row is connected in the bayonet joint through the cable, the top of first pad is provided with the clamping piece, the both ends of clamping piece are respectively through fix with rivet in the circuit board, the bottom surface of clamping piece support hold in FPC's top surface, set up the welding window who corresponds with first pad in the clamping piece. The utility model discloses simple structure connects FPC and converts conventional cable into and connects to realize quick assembly disassembly through the bayonet joint, facilitate the use, do not influence the welding when the fixed FPC of clamping piece, improve the welding precision.

Description

Switching device for FPC

Technical Field

The utility model relates to a FPC switching technical field, in particular to a switching device for FPC.

Background

FPC: the English full-assembled Flexible Printed Circuit board is characterized by that it utilizes the photo-imaging pattern transfer and etching process to make conductor Circuit pattern on the surface of Flexible base material, and the surface of the Circuit pattern is protected and insulated by covering film, so that it is a high-reliability Printed Circuit board, also called FPC Flexible board. One of the main characteristics of the FPC is that circuit connection can be achieved to solve the problem that a mixed and disorderly wiring harness occupies space, but the FPC connection requires a specific connector, compatibility between different components is poor, and particularly, an update cycle of an electronic component is short, and damage of a single electronic component may cause that a component of a whole electrical circuit needs to be replaced, which causes cost increase and waste, and direct welding of the FPC may cause that a gold finger end of the FPC becomes abnormally fragile due to the ultra-thin thickness and poor extensibility of a copper foil. Accordingly, improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a switching device for FPC to overcome not enough among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model discloses a switching device for FPC, include:

a circuit board, wherein a connection circuit is arranged in the circuit board, and the first bonding pad and the second bonding pad arranged on the circuit board are electrically connected;

one end of the FPC is electrically connected to the first bonding pad through welding, and the other end of the FPC is electrically connected to an external element;

the terminal row is welded with the second bonding pad and is electrically connected with the plug connector through a cable;

the two ends of the clamping piece are detachably fixed on the circuit board through rivets respectively, the bottom surface of the clamping piece abuts against the top surface of the corresponding end portion of the FPC, and a welding window corresponding to the first welding pad is formed in the clamping piece.

Further, in the above adapter device for FPC, the FPC includes an aluminum circuit and a cover film that is press-fitted on a surface of the aluminum circuit, a through hole is opened at an end of the cover film, and a third pad corresponding to the first pad is formed on a surface of the aluminum circuit.

Further, in the above adapter device for FPC, a nickel-plated aluminum sheet is disposed between the first pad and the third pad, and a nickel-plated layer of the nickel-plated aluminum sheet is soldered to the first pad.

Further, in the above switching device for the FPC, the clip and the rivet are made of an insulating material, and the welding window is filled with an insulating filler.

Compared with the prior art, the utility model has the advantages of: the utility model discloses simple structure connects FPC and converts conventional cable into and connects to realize quick assembly disassembly through the bayonet joint, facilitate the use, do not influence the welding when the fixed FPC of clamping piece, improve the welding precision.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an adapter device for FPC according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a circuit board according to an embodiment of the present invention.

Fig. 3 is a schematic structural view of a clip according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the FPC according to an embodiment of the present invention.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Exemplarily, referring to fig. 1 to 4, an adaptor device for an FPC, comprising:

a circuit board 1 having a built-in connection line for electrically connecting a first pad and a second pad provided on the circuit board 1;

an FPC2 having one end electrically connected to the first pad by soldering and the other end electrically connected to an external element;

the terminal strip 3 is welded with the second pad and is electrically connected with the plug connector 5 through a cable 4;

the two ends of the clamping piece 6 are detachably fixed on the circuit board 1 through rivets 7, the bottom surface of the clamping piece 6 abuts against the top surface of the corresponding end of the FPC2, and a welding window corresponding to the first welding pad is formed in the clamping piece 6.

In the technical scheme, each connecting circuit forms an independent contact at a first bonding pad and a second bonding pad, the specific structure, the circuit board, the connecting circuit, the first bonding pad and the second bonding pad belong to the prior art, which is not described herein one by one, pins of the terminal strip are inserted into the second bonding pad and are welded and fixed through conventional processes such as wave-soldering and the like, two ends of the cable are respectively electrically connected with the terminal strip and the plug connector, the specific process and the structure are conventional technologies, the connecting circuit of the circuit board is converted into a plug connector form, the plug connector is convenient to use, and rapid disassembly and assembly can be realized; this a switching device for FPC simple structure connects FPC and converts conventional cable into and connects to realize quick assembly disassembly through the bayonet joint, facilitate the use, do not influence the welding when the fixed FPC of clamping piece, improve the welding precision.

Illustratively, as shown in fig. 4, the FPC2 includes an aluminum wiring 21 and a cover film 22 that is press-fitted on a surface of the aluminum wiring 21, a through hole is opened at an end of the cover film 22, and a third pad corresponding to the first pad is formed on the surface of the aluminum wiring 21.

According to the technical scheme, the aluminum circuit is formed by laser cutting, then the upper surface and the lower surface of the aluminum circuit are subjected to hot pressing on the covering films at the same time, the through holes are preset in the covering films before pressing, the corresponding end parts of the aluminum circuit are exposed to form third bonding pads after pressing, the width of the end parts of the aluminum circuit is increased, the area of the third bonding pads is enlarged, and therefore welding stability is improved; in addition, the price of the metal aluminum is far lower than that of the metal copper, and the cost can be reduced by using an aluminum circuit.

Exemplarily, referring to fig. 2, a nickel-plated aluminum sheet 8 is disposed between the first pad and the third pad, and a nickel plating layer of the nickel-plated aluminum sheet is soldered to the first pad.

In the technical scheme, a connecting circuit arranged in the circuit board is made of copper, an aluminum circuit is arranged in the FPC, the miscibility between aluminum and copper is poor, so that the welding stability is poor, a nickel-plated aluminum sheet is welded to a first bonding pad in advance in the manufacturing process or after the manufacturing of the circuit board is finished, a nickel-plated layer of the nickel-plated aluminum sheet is welded to a copper foil of the first bonding pad, and the aluminum circuit of the subsequent FPC is directly connected to the side, which is not plated with nickel, of the nickel-plated aluminum sheet through laser welding; in addition, the surface of the FPC is provided with the covering film, the surface of the copper foil of the first bonding pad is lower than the surface of the circuit board, namely, a gap exists between the first bonding pad and the third bonding pad, so that the poor conditions such as false welding are easily formed in direct welding, the gap between the first bonding pad and the third bonding pad is filled with the nickel-plated aluminum sheet, the problem caused by poor contact in welding is reduced, and the welding stability is improved.

Illustratively, referring to fig. 3, the clip 6 and the rivet 7 are made of an insulating material, and the welding window is filled with an insulating filler (not shown).

Among this technical scheme, reserve the fabrication hole that corresponds with rivet etc. in the circuit board, concrete structure belongs to prior art, the clamping piece is made by insulating material such as insulating resin, the simple and easy plastics rivet of detachable is chooseed for use to the rivet, FPC's third pad aligns the back with the first pad of circuit board, pass through fix with rivet the clamping piece in the circuit board, it is fixed completely with FPC's third pad, avoid the welding that removes among the welding process and etc. cause bad, laser weld through the welding window can, the welding is accomplished the back, pour into the welding window with resin etc. into, protection welded connection department and circuit.

To sum up, the utility model discloses simple structure connects FPC and converts conventional cable into and connects to realize quick assembly disassembly through the bayonet joint, facilitate the use, do not influence the welding when the fixed FPC of clamping piece, improve the welding precision.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.

The foregoing is only a detailed description of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An adapter device for FPC, comprising:

a circuit board having a built-in connection circuit for electrically connecting a first pad and a second pad provided on the circuit board;

the terminal strip is welded on the second pad and is electrically connected to the plug connector through a cable;

2. The adapter device for FPC as claimed in claim 1, wherein: the FPC comprises an aluminum circuit and a covering film pressed on the surface of the aluminum circuit, wherein a through hole is formed in the end portion of the covering film, and a third bonding pad corresponding to the first bonding pad is formed on the surface of the aluminum circuit.

3. The adapter device for FPC as claimed in claim 2, wherein: a nickel-plated aluminum sheet is arranged between the first bonding pad and the third bonding pad, and a nickel plating layer of the nickel-plated aluminum sheet is welded on the first bonding pad.

4. The adapter device for FPC as claimed in claim 1, wherein: the clamping pieces and the rivets are made of insulating materials, and insulating filler is filled in the welding window.