JPH0170247U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a perspective view of a fixed contact in an embodiment of this invention, Figure 2 is an exploded perspective view of the one in Figure 1, and Figure 3 is generation of electromagnetic driving force for an arc by the fixed contact in Figure 1. FIG. 4 is a cross-sectional side view of another embodiment of the invention, and FIG. 5 is a partial side view schematically showing the main parts of a conventional remote-controlled circuit breaker. In the figure, 2A and 2B are fixed contacts, 201
202 is a fixed contact, 202 is an arc runner part, 203 is a load current carrying part, 204 is a first member, 205 is a second member, 204c, 205c are arc running surfaces, 204D is a protrusion, 205D is an opening, 205E is an opening 205D The parts on both sides of , 3 are movable contacts, 3
01 is a movable contact, 4 is an arc extinguisher, 5 is an electromagnet device, 501 is an armature, 502 and 503 are permanent magnets, and 504 is a coil. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A power supply side terminal, a load side terminal, a fixed contact carrying a fixed contact, a movable contact carrying a movable contact and opening and closing with respect to said fixed contact, said fixed contact, and an arc extinguishing device disposed opposite to the movable contact for extinguishing an arc generated between the movable contacts when the movable contact is separated from the fixed contact; an electromagnetic device that opens and closes the terminal to a fixed contact, and the fixed contact is connected to an arc runner section extending from the fixed contact to the arc extinguishing device and one of the terminals extending from the fixed contact. the movable contact is connected to the other terminal,
The electromagnetic device includes an armature, a permanent magnet that passes a magnetic flux through the armature, and a coil that generates a magnetic flux that is superimposed on the magnetic flux of the permanent magnet in the armature when energized, and the direction of energization of the coil can be controlled remotely. A portion of the arc runner portion close to the fixed contact in a remote-controlled circuit breaker in which the armature is moved to two positions by control to open and close the movable contact relative to the fixed contact. is formed of a first member made of a conductor made of copper or a copper-based alloy, and the remaining part of the arc runner section is formed by plating copper, nickel, or an alloy of copper and nickel on the surface of the conductor made of iron or an iron-based alloy. A remote-controlled circuit breaker characterized in that it is formed of a second member subjected to the following steps. (2) One of the first and second members is provided with a protrusion that protrudes toward the other member at the center of its tip, and the other member is provided with an opening that is tightly fitted with the protrusion. The remote control circuit according to claim 1, wherein the one member is fixed to the other member by fitting the protrusion into the opening. Shiya disconnector. (3) When the arc running surface of one member and the arc running surface of the other member are inclined to each other at an angle smaller than 180° at the fitting portion between the protrusion of the one member and the opening of the other member. Claim 2 of the utility model registration, characterized in that the portions on both sides of the opening of the other member are bent so that the arc running surface thereof is substantially continuous with the arc running surface of the one member. Remotely operated circuit disconnector.