JPH071747Y2 - Wire clip of arc welding equipment for electronic parts - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire clip of an electronic part arc welding apparatus for connecting the end parts of lead wires of electronic parts in the production of audio products by arc welding.

[0002]

2. Description of the Related Art Conventionally, in the manufacture of audio products, electronic components such as transistors and resistance elements are generally connected to a printed circuit board by soldering. However, the connection by soldering has a large contact resistance, which is a major cause of sound quality deterioration. Therefore, in high-quality audio products, instead of soldering, lead wires are connected by spot welding.

[0003]

In the case of audio products, it is desirable to reduce the connection resistance of electronic parts as much as possible in order to reproduce a more natural sound. For that purpose, it is desirable to directly connect the lead wires of the electronic components, rather than connecting the electronic components via the substrate. However, in the case of spot welding, only one lead wire can be connected, and a plurality of parts cannot be connected together.

Further, in the case of spot welding, the lead wires are welded to each other without interposing a filler, so that the contact resistance is smaller than that of soldering, but the contact surfaces are welded to each other, so that the welding is completed. There are cases where it does not.
Further, in the case of the conventional spot welding, high heat and high current may be generated, and the electronic parts may be destroyed.

The present invention was devised in view of the above-mentioned circumstances, in which the lead wires of an electronic component can be reliably converged and held, and a good connection that is completely integrated can be achieved, and It is possible to dramatically reduce the connection resistance and prevent the destruction of electronic parts due to high heat and high current during welding.
It is an object of the present invention to provide a wire clip of an electronic component arc welding device that can obtain an audio product with high sound quality.

[0006]

In order to achieve the above object, the wire clip of the electronic parts arc welding apparatus of the present invention is electrically connected to the arc welding machine body to connect the lead wires of the electronic parts to be connected. A wire clip that is held by a pair of holding pieces to form a ground-side electrode of an electronic component arc welding apparatus, wherein the holding pieces are made of a material having low thermal resistance and electric resistance, and are opposite to each other near the tips. A notch is formed in which the opening end portion forming the lead wire holding portion is gradually narrowed toward the inner side, and one holding piece of the pair of holding pieces has a surface facing the other holding piece. On the upper part of the notch, a stopper that engages with the notch of the opposing holding piece is projected, and the pair of holding pieces is biased by a spring in the direction in which the tip holding part closes. By adopting the structure, characterized by comprising pivotally attached between portions, those that could be achieved.

[0007]

[Function] Since the gripping piece of the wire clip is formed with triangular shaped cuts facing each other in opposite directions, the space formed by the two cuts is concentrated at one point as the gripping piece closes. Converge to do. Therefore, the plurality of lead wires fitted into the notches are naturally guided to the notches and converged as the holding piece is closed, and are kept in that state, so that the tips protruding from the notches can be welded. . And since the lead wires of electronic components are melted and connected without using a filler, a large number of lead wires can be welded at the same place at one time, and the welded part becomes completely integrated and becomes strong and at the welded part. The contact resistance of is greatly reduced. In addition, the conduction of heat and electric current during welding to the electronic component is interrupted and the electronic component is never destroyed. Therefore, when the present invention is applied to the production of an audio product, it is possible to obtain a sound quality significantly superior to that produced by the conventional connection method.

[0008]

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention by inert gas shielded arc welding. In the figure, reference numeral 1 denotes a welding machine main body, which has a negative connection terminal 2 for connecting a torch and a positive connection terminal 3 for connecting a base material, and a current adjustment so that the intensity of current during discharge can be freely set. Dial 4
have. Further, argon gas is used as the inert gas, and the argon gas is supplied from the argon gas cylinder 6 to the torch 8 via the electromagnetic valve 7. At the tip of the torch 8, an electrode of a carbon rod and an inert gas nozzle surrounding the electrode are formed. Reference numeral 9 is a foot switch for controlling opening / closing of the solenoid valve 7.

Reference numeral 10 denotes a wire clip that aligns the lead wires of the electronic parts to be welded in the same direction, and the wire clip is connected to the plus terminal of the main body of the welding machine. The wire clip is formed of a material having a low heat resistance and an electric resistance, such as a copper plate, and as shown in FIG. 3, each of the holding pieces 11, 11 ' has a pair of triangular cuts 12, 12 at the nipping portions thereof. 'Is formed so that multiple lines can be converged and easily and reliably sandwiched.

The shape of the cut is not limited to a triangular shape, but may be a circle or an ellipse. A stopper 13 is provided at the upper part of the notch so as to engage with the notch of the opposing holding piece, thereby resisting the spring 14 biasing the holding part in the closing direction. Then, the state of FIG. 2 is maintained.

Next, a method for welding an electronic component with the apparatus configured as described above will be described in detail.

In the illustrated embodiment, the lead wires of the resistance element R, the capacitor C, and the transistor T are integrally connected. The lead wires are aligned in the same direction and held by the wire clip 10. At that time, the clip is formed with triangular cuts at opposite positions of the holding piece, so that the lead wire is cut with the cuts 12, 12 '.
Guided by, and closely adhered to each other, maintained in that state, and prevented from coming apart during welding. In this way, when preparation is completed, welding is started.

First, an arc is generated by bringing the electrode into contact with the base material and separating the electrode, and the heat of the arc melts the lead wire as the base material to start welding. At the same time, the foot switch is activated to eject argon gas from the torch nozzle to shield the weld and prevent oxidation of the base metal during melting.

During welding, the weld becomes high in heat, but since the electronic component side is sandwiched by clips having low thermal resistance, the heat of the weld is transmitted to the clip and escapes, and is hardly transmitted to the electronic component. In addition, a current flows in the order of the positive terminal of the welding machine-the clip-the base material-the arc-the electrode-the negative terminal. However, since the clip has a low electric resistance, a large current is prevented from flowing to the electronic component. Therefore, the electronic components are never destroyed by the heat or the large current generated by welding.

As described above, according to the present embodiment, the lead wires of the electronic component are welded to each other without using the filler, and the welding is performed by shielding with the inert gas, so that the welded portion is prevented from being oxidized or cavities are generated. As a result, they are completely integrated and the contact resistance at the welded part is greatly reduced.

In the above embodiment, the inert gas shielded arc welding was used, but the present invention is not limited to this embodiment, and laser welding, gas welding or the like is also possible.

[0018]

As described above, according to the present invention, since the lead wires of the electronic component are melted and connected without using the filler, the welded portion is completely integrated and strong,
The contact resistance at the welded part can be significantly reduced, and the conduction of heat and current during welding to the electronic parts will not be interrupted and the electronic parts will not be destroyed. Compared with the one manufactured by the connection method of (1), the remarkable effect that the one with the excellent sound quality can be obtained dramatically is exhibited.

Further, since it is resistant to high temperatures, its reliability is improved when it is applied to a communication device mounted on an artificial satellite or the like.

Particularly, in the wire clip of the arc welding apparatus for electronic parts of the present invention, the notches which are gradually narrowed toward the inside of the opening end are formed on the opposite sides in the vicinity of the tip of the holding piece. The plurality of lead wires fitted into the cuts are naturally guided by the cuts and converged and closely contacted with each other as the holding piece is closed, so that good welding in which the respective lead wires are completely integrated can be performed. And
Regardless of the number of lead wires to be welded, the lead wires can always be reliably converged and held.

Further, since the wire clip of the arc welding apparatus for electronic parts of the present invention is formed by simply pivotally attaching a pair of plate-shaped holding pieces, the structure is simple and can be formed in a small size. It has a remarkable effect that it can be easily operated with a finger and can securely hold even a lead wire protruding in a three-dimensional direction in a narrow space forming an electronic circuit.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment showing a method for welding electronic parts of the present invention.

FIG. 2 is a plan view of a clip used for carrying out the method of the present invention.

FIG. 3 is a perspective view of a holding piece.

[Explanation of symbols]

1 welder body 2 negative terminal 3 positive terminal 4 the current adjustment dial 6 argon gas cylinder 7 solenoid valve 8 torch 9 foot switch 10 wire clip 11, 11 'wire clip clamping pieces 12, 12' narrowing cut

Claims (1)

[Scope of utility model registration request] 1. A wire clip which is electrically connected to an arc welding machine main body and which holds the lead wires of electronic parts to be connected by a pair of holding pieces to constitute an earth side electrode of an electronic part arc welding apparatus. The holding piece is formed of a material having low heat resistance and electric resistance, and a notch is formed on the opposite sides in the vicinity of the tip portion, where the open ends forming the lead wire holding portions are gradually narrowed toward the inner side. And in one of the pair of holding pieces,
On the upper part of the notch on the surface opposite to the other holding piece, a stopper that engages with the notch of the opposing holding piece is projected, and the pair of the holding pieces is closed by a spring in the direction in which the tip holding part closes. A wire clip for an arc welding device for electronic parts, characterized in that it is urged to pivotally connect the middle part thereof.