JPS59180917A - Method of producing conductor with contact - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] The present invention relates to a method for manufacturing a conductor with contacts,
For example, the present invention relates to a method of manufacturing a conductor with contacts, which is an improved method of joining a conductor to a contact of a circuit breaker.

Conventional circuit breaker contacts and conductors are joined by so-called resistance brazing, which is generally performed by using a brazing metal and a resistance welding machine. However, due to the use of brazing filler metal and flux, manufacturing costs are high,
It has various drawbacks as a joining method, such as environmental pollution and a decrease in the strength of the conductor due to the heat generated by the resistance welding machine.

This invention was made with the aim of eliminating the drawbacks of the conventional ones as described above. An embodiment of the method for manufacturing a contact conductor according to the present invention will be described below with reference to FIGS. 1 to 4.

Figure 1 shows the method for manufacturing a contact conductor according to the present invention! v
FIG. 2 is a perspective view showing the number of the lower molding die used in the method for manufacturing a contact conductor according to the present invention, and FIGS. 8 and 4 are illustrations of the present invention. It is a diagram. In Figures 1 to 4, (1) is a conductor, (2) is a contact, (3) is a lower mold, (801) is a contact insertion part, (802) is a conductor insertion part, and (808) is a Opening, (4) is the lower mold, (401) is the opening, (5)
is the punch, and (6) is the ejection part.

Next, a method of joining the contact point (2) and the inside of the conductor will be explained.

Insert the contact (2) as shown in Fig. 8 into the contact insertion part (801) of the lower mold (3) with the taper angle α (5 to 15°) as shown in Fig. g4, On top of that is a conductor (
1) into the conductor insertion m (802) so as to overlap. Thereafter, as shown in Fig. 4, the lower molding die (4) is installed on the opening (808) of the lower molding die (3), and the punch (5) is inserted into the opening (808) of the lower molding die (4). 401) and apply pressure from the back of the conductor (1) with an impact, deforming the conductor (1) and the contact (2), and cold welding the conductor (1) and the contact (2) together. As the material for the contact point (2), Ag+CDO type or Ag+Ni type, which can be cold-welded, is mainly used.

After joining, the contact insertion part (801) of the lower mold (3)
Since the angle α is attached to the conductor (1), the dimensions of all the contacts (2) formed under the conductor (ρ) can be set as desired.

As described above, in this invention, the contact (2) and the conductor (1) are joined by cold pressure welding, so that no brazing material or flux is required. This reduces manufacturing costs and
No environmental pollution occurs. Furthermore, since there is no heat effect, the strength of the conductor (1) does not decrease and reliability is improved. Additionally, automation is advantageous in manufacturing compared to traditional waxing methods. Furthermore, the embossed portion (6) is connected to the contact point (2).
) It has various excellent advantages as a joining method, such as being able to double as an alloy part.

Note that in order to further strengthen the bond between the contact (2) and the conductor (1), diffusion heat treatment or ultrasonic welding may be performed after cold pressure welding.

As described above, according to this invention, manufacturing costs are reduced,
It has various effects such as no environmental pollution, improved reliability, and easy automation of manufacturing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of a conductor with contacts manufactured by the method of manufacturing a conductor with contacts according to the present invention, and FIG. 2 is a lower molding die used in the method of manufacturing a conductor with contacts according to the present invention. The perspective view, FIGS. 3 and 4 are explanatory diagrams of the present invention. In the figure, (1) is the conductor, (2) is the contact, (3) is the lower mold, (801) is the contact insertion part, (802) is the conductor insertion part, (808) is the opening, (4) is the bottom mold, (
401) is an opening, (5) is a punch, and (6) is a striking portion. Note that the same reference numerals in each figure indicate the same parts. Agent Patent Attorney Makoto Kazuno

Claims (4)

[Claims] (1) A first step of overlapping the contact and the conductor, applying pressure from the back surface of the conductor at the joint between the contact and the conductor in the direction of the contact and punching out the conductor into a convex shape, thereby forming the contact and the conductor. A second method for manufacturing a conductor with contacts by cold pressure welding. (2) A third step of performing diffusion heat treatment or ultrameter welding on the joint between the contact and the conductor after cold welding the contact and the conductor: Claim No. (1) Method for manufacturing a conductor with contacts as described in Section 1. (3) The first step is to insert a contact into the contact insertion part of the lower mold, insert a conductor into the conductor insertion part of the lower mold, and overlap the contact and the conductor. A method for manufacturing a conductor with contacts according to claim [1]. (4) In the step 2, after installing the lower molding die in the opening on the back side of the conductor, a punch is press-fitted from the opening of the lower molding die to coldly connect the contact and the conductor. A method of manufacturing a conductor with contacts according to claim 1, wherein the conductor is brought into pressure contact.