JPS6050819A - Electric contactor - 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 [Technical Field of the Invention] The present invention relates to electrical contacts, particularly electrical contacts such as electromagnetic switches and electromagnetic relays.

[Prior art]

This type of electrical contact is, for example, made of silver, as shown in Figure 1.
Contacts 10 made of an alloy of silver and palladium or an alloy of silver and nickel are bonded to both ends of a base metal 12 such as BUS, PBEl, BS, etc., which has spring properties and whose central portion is bent into a mouth shape. There is.

Conventionally, as means for joining the contact 10 to the base metal 12,
As shown in FIG. 2, a brazing material 14 is interposed between the contact 10 and the base metal 12 to braze them together, or as shown in FIG. A protrusion tOa is provided at the contact point 10, and the contact 10 is joined to the base metal 12 by melting the protrusion.

However, brazing requires a separate brazing material 14, which needs to be supplied onto the base metal 12 at the same time as the contact 10.
It was difficult to rationalize the process of joining the contact lO and the base metal 12, and there were problems such as the generation of voids.

In addition, resistance welding does not have the same problems as brazing, but welding conditions are limited and protrusions @ 10
There was a problem in bondability because the shape of a was limited.

[Summary of the invention]

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an electrical contact that can rationalize the bonding process and stabilize the bond.

In order to achieve the above object, the present invention provides an electric contact in which a contact is bonded to an alloy, in which the contact is clad with a bonding member that has good bonding properties to the base metal and protrudes in a dotted or linear shape, and It is characterized in that the contact is joined to the alloy via a member.

[Embodiments of the invention]

Hereinafter, preferred embodiments of the present invention will be described based on the drawings. FIG. 4 shows contact materials applicable to the electrical contact of the present invention, such as silver, an alloy of silver and palladium, or an alloy of silver and nickel. At 1, a bonding member 102 made of phosphor bronze or an alloy of copper and nickel, etc., which generates large resistance heat generation, that is, has a large resistance value, is connected in a linear shape (it may be in the form of a dot) so that a part thereof protrudes from the contact material 100.
It has a closed configuration.

Cut the above contact material to an appropriate length to make the contact 10,
As shown in FIG. 5, the bonding member 102 is superimposed on the alloy so as to be in contact with the base metal 12, and electrical current is applied to this overlapped portion to intensively generate resistance heat generation in the bonding member 102, and the resistance heat generation causes the bonding member to 102 is melted to join the contact 10 to the base metal 12.

〔Effect of the invention〕

As described above, according to the present invention, since the connecting member with good bondability to the alloy is provided protrudingly in the form of a line or point at the contact point,
The bonding between the contact and the alloy can be performed stably regardless of the type of alloy, and the bonding process can be streamlined, the bonding speed can be increased, and the bonding can be stabilized, increasing reliability as an electrical contact. A significantly improved effect can be obtained.

[Brief explanation of drawings]

Figure 1 is a perspective view of an electric contact, Figure 2 is an explanatory diagram of an example of joining a contact and an alloy in a conventional electric contact, Figure 3 is an explanatory diagram of another example of joining, and Figure 4 is an illustration of the book. FIG. 5 is an enlarged perspective view of the contact material applied to the electrical contact of the invention, and FIG. 5 is a front view showing the state of the contact and alloy in the electrical contact of the invention before they are joined. In each figure, the same members are given the same symbols, 10 is a contact, 1
2 is a base metal, 14 is a brazing material, 100 is a contact material, and +02 is a joining member. Agent: Patent attorney Masuo Oiwa (and 2 others) Figure 1, 1 convex, Figure 4, Figure 5

Claims (1)

[Claims] (1) In an electric contact in which a contact is bonded to an alloy, the contact is clad with a bonding member that has good bonding properties to the base metal and protrudes in a point or line shape, and the contact is bonded to the alloy through the bonding member. An electrical contact characterized by being bonded.