JPH07335279A - Method and structure for connecting lead between terminals - Google Patents

Abstract

PURPOSE:To easily connect a braided wire to a terminal block material without being influenced by a pitch between terminals, shape of the terminal block material, etc., by ultrasonic-welding a connection part between the braided wire and the terminal block material. CONSTITUTION:In a lead connecting structure, a flexible flat braided copper wire 2 is arranged astride terminal block materials 1A, 1B respectively formed of a conductor, and connection parts 3 between each block material 1A, 1B and the copper wire 2 are respectively ultrasonic-welded by using an ultrasonic welding machine. In a device for manufacturing the lead connecting structure, first on a workpiece mounting base 11, the terminal block materials 1A, 1B are set by providing a space S. Next, the flat braided copper wire 2 is arranged in each positioning groove 4 of the block materials 1A, 1B, to press, from above of this copper wire, horns 12a of the ultrasonic welding machine 12 to the connection part 3 through tools 13 therebetween, and when this part is given an ultrasonic vibration, the block materials 1A, 1B and the copper wire 2 are fused and connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lead connecting method and structure for electrically connecting a conductor such as copper to a terminal block material.

[0002]

2. Description of the Related Art Conventionally, a flexible braided copper wire or the like has been used to electrically connect a terminal block material made of a conductor such as copper. Further, in this case, the connection between the terminal block material and the braided wire is performed by casting and pressure bonding.

[0003]

However, in the method in which the braided copper wire and the terminal block material are connected by casting and crimping, the work is difficult and technical when the pitch between the terminals is short. However, there was a problem that it required advanced equipment and increased costs. The workability is also greatly affected by the shape of the terminal block material,
Therefore, there is a problem that the design of the terminal block material is limited and the design is difficult.

The present invention has been made in view of the above-mentioned problems, and its purpose is not significantly affected by the pitch between terminals, the shape of the terminal block material and the like, and between the knitting wire and the terminal block material. It is an object of the present invention to provide a lead connecting method and a structure capable of easily connecting to each other. Furthermore, other purposes will be clarified one after another in the content described below.

[0005]

According to the present invention, this object is achieved by ultrasonically bonding the joint between the braided wire and the terminal block material.

[0006]

According to this, since the ultrasonic bonding is used, the connection work can be easily performed without being significantly affected by the pitch between terminals and the shape of the terminal block material. Further, the resistance value of the joint portion between the braided wire and the terminal block material also becomes small.

[0007]

Embodiments of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a lead connecting structure shown as an embodiment of the present invention. FIG. 1 is a top view thereof, and FIG. 2 is a side view thereof.

1 and 2, in this lead connection structure, a flexible flat braided copper wire 2 is arranged so as to straddle a terminal block material 1A and a terminal block material 1B each made of a conductor. Then, the joining portion 3 between each of the terminal block materials 1A and 1B and the flat braided copper wire 2 is ultrasonically joined using an ultrasonic joining machine. Positioning grooves 4 for receiving one end of the flat braided copper wire 2 are formed in the terminal block materials 1A and 1B side where the joining portion 3 is provided in the manufacturing process. The depth of the positioning groove 4 is substantially equal to the thickness of the flat braided copper wire 2 and the width thereof is also substantially equal to the width of the plain braided copper wire 2.

FIG. 3 shows one manufacturing apparatus for forming the lead connecting structure shown in FIGS. In this manufacturing apparatus, first, the terminal block members 1A and 1B are set on the work mounting table 11 with a gap S (about 6.4 mm in this embodiment) provided therebetween. Next, the flat braided copper wire 2 is placed in each positioning groove 4 of the terminal block materials 1A and 1B,
When the horn 12a of the ultrasonic bonding machine 12 is pressed against the bonding portion 3 via the tool 13 and ultrasonic vibration is applied to the horn 12a, the terminal block materials 1A and 1B and the flat braided copper wire 2 are applied. It has a structure in which it can be melted and joined to each other. The lead connection structure shown in FIGS. 1 and 2 is formed in this manner.

As described above, in this embodiment, ultrasonic bonding is used to bond the flat braided copper wire 2 hung between the terminal block materials 1A and 1B to the respective terminal block materials 1A and 1B. Therefore, the pitch between terminals and the terminal block material 1
The connection work can be performed easily without being significantly affected by the shapes of A and 1B. Thereby, workability can be improved and cost can be reduced. Further, the resistance value of the joint portion between the flat braided copper wire 2 and the terminal block materials 1A and 1B can also be reduced.

In the above embodiment, the terminal block material 1
Although the A, 1B and the flat braided wire 2 are made of a copper material are disclosed, the conductive material is not necessarily a copper material.

[0012]

As described above, according to the present invention,
Since ultrasonic bonding is used, the connection work can be easily performed without being significantly affected by the terminal pitch, the shape of the terminal block material, etc., and the workability can be improved and the cost can be reduced. Further, the resistance value of the joint portion between the braided wire and the terminal block material can be reduced.

[Brief description of drawings]

FIG. 1 is a top view of a lead connection structure shown as an embodiment of the present invention.

FIG. 2 is a side view of the structure of this embodiment.

FIG. 3 is a schematic configuration layout diagram showing one manufacturing apparatus for forming the structure of this embodiment.

[Explanation of reference numerals] 1A terminal block material 1B terminal block material 2 plain braided copper wire 3 joining portion 4 positioning groove 12 ultrasonic joining machine 12a horn

Claims (4)

[Claims] 1. A lead connection structure between terminals for electrically connecting and fixing conductor terminal block materials through braids, wherein a joining portion between the braids and the terminal block material is ultrasonically joined. Lead connection structure between terminals characterized by the following. 2. The lead connection structure between terminals according to claim 1, wherein the terminal block material and the braided wire are each formed of a copper material. 3. The knitting wire is flexible.
Lead connection structure between terminals described in. 4. A lead connecting method between terminals for electrically connecting and fixing conductor terminal block materials through braids, wherein a joining portion between the braids and the terminal block material is ultrasonically joined. A method for connecting leads between terminals characterized in that