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Method of joining clad metal member and metal part, method of manufacturing thermal tripping device, and circuit breaker

A technology for metal parts and tripping devices, which is used in the manufacture of emergency protection devices, circuit breaker parts, circuits, etc., can solve the problems of insufficient bonding strength, heat dispersion, and applied heat, and achieve the effect of suppressing scattering and sufficient bonding strength.

Active Publication Date: 2018-01-02
MITSUBISHI ELECTRIC CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, in the conventional joining method disclosed in Patent Document 1, the protrusion of the metal member is joined on the periphery of the hole in the clad metal, so the joint area is narrow and the heat is largely dispersed on the clad metal.
Therefore, the heat cannot be applied effectively to the welded part, and the joint strength cannot be sufficiently formed, resulting in insufficient joint strength. The amount of molten matter scattered in parts with a low melting point is large, so the molten material cannot stay on the clad metal parts. set of holes in the problem

Method used

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  • Method of joining clad metal member and metal part, method of manufacturing thermal tripping device, and circuit breaker
  • Method of joining clad metal member and metal part, method of manufacturing thermal tripping device, and circuit breaker
  • Method of joining clad metal member and metal part, method of manufacturing thermal tripping device, and circuit breaker

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Embodiment approach 1

[0034] figure 1 It is an external perspective view showing the circuit breaker in Embodiment 1 of this invention. in addition, figure 2 is said to be figure 1 The shown perspective view of the appearance of the circuit breaker is sequentially decomposed into a cover, an intermediate base, and a perspective view of the state of the base from above. image 3 is to figure 2 The shown is a perspective view of the components contained in the middle base. in addition, Figure 4 It is a perspective view showing a single-pole overcurrent tripping device and a yoke. in addition, Figure 5 It is an enlarged perspective view showing a state in which an insulating member is attached to the overcurrent tripping device of the central pole.

[0035] exist figure 1 as well as figure 2 Among them, the insulating frame 50 of the circuit breaker 101 for 3 poles is constituted by the cover 1 , the intermediate base 2 and the base 3 . Among them, the intermediate base 2 accommodates t...

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Abstract

A method of joining clad metal to metal parts is provided. Sufficient joining strength can be achieved, and at the same time melt scattering during joining can be prevented. The method includes: a step of preparing clad metal (25), the main body of which is provided with a hole (27); a step of preparing a metal part (26) which comprises a protruding part (26a) with a diameter greater than that of the hole (27), the front end of the protruding part (26a) comprising a hole (26b) with a diameter greater than the aperture of an opening in the clad metal (25); and a step joining and soldering the hole (27) with the hole (26b).

Description

technical field [0001] The present invention relates to a method of joining a clad metal member and a metal part, and more particularly, to a method of manufacturing a thermal trip device using the joining method and a circuit breaker using the thermal trip device manufactured by the method. Background technique [0002] The thermal tripping device of the circuit breaker is a device that detects overcurrent and trips the main circuit. In order to protect the current path from overcurrent damage, the thermal tripping device will separate the movable contact by bending the bimetal to rotate the switch lever if the current flowing in the circuit becomes overloaded. [0003] In general, a clad metal including a bimetal is a metal obtained by roll-bonding a plurality of metals having different conductivities. Conventionally, projection welding is used as a technique for joining two metals having different thermal conductivity, that is, a clad metal member and a metal member. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H69/00H01H73/02H01H71/16
CPCH01H69/00H01H71/16H01H73/02H01H69/01H01H73/22
Inventor 出口智也石原丰平赤坂谦一
Owner MITSUBISHI ELECTRIC CORP
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