Operating mechanism and miniature circuit breaker

A technology of small circuit breakers and operating mechanisms, applied in the direction of operation/release mechanism of protection switches, etc., can solve the problems of false tripping, high assembly difficulty, high failure rate, and achieve sensitive tripping, low position accuracy requirements, and high failure rate. low rate effect

Active Publication Date: 2013-01-16
ZHEJIANG TENGEN ELECTRIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the background technology, the present invention provides an operating mechanism and a small circuit breaker installed with the operating mechanism, which mainly solves the problems that the existing small circuit breakers are prone to false tripping or insensitive tripping, difficult assembly and failure high rate problem

Method used

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  • Operating mechanism and miniature circuit breaker
  • Operating mechanism and miniature circuit breaker
  • Operating mechanism and miniature circuit breaker

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing:

[0020] Depend on Figure 1 to Figure 7 As shown, an operating mechanism includes a lock 1, a jumper 2, a bracket 3, a "U"-shaped connecting rod 4 and a handle 5, and the "U"-shaped connecting rod 4 is connected between the handle 5 and the jumper 2, and the bracket 3 One-piece structure, the bracket 3 is provided with a central shaft sleeve 6 with a central hole, a triangular distribution of the jumper hinge shaft 7, a lock reset torsion spring installation shaft 8, a moving contact installation shaft 9, and a jumper hinge shaft 7 A spring seat 10 is extended outward from the bracket 3 at the center, and a spring 12 is installed between the spring seat 10 and the housing 11; a movable spring is arranged between the jumper hinge shaft 7 on the right side of the central bushing 6 and the movable contact installation shaft 9. The contact torsion spring holder 13, the outer wa...

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Abstract

The invention discloses an operating mechanism and a miniature circuit breaker. The problems that false tripping of the conventional miniature circuit breaker easily happens, or the conventional miniature circuit breaker is insensitive to trip, the assembling difficulty is high and the failure rate is high are mainly solved. The operating mechanism is characterized in that a bracket (3) has an integral structure; a central shaft sleeve (6) provided with a central hole and a trip hinged shaft (7), a latch resetting torsion spring mounting shaft (8) and a moving contact mounting shaft (9) which are distributed in a triangle shape are arranged on the bracket (3); a trip (2) is a body piece; a moving contact torsion spring (22) is wound outside the moving contact mounting shaft (9); a mounting seat (18) on the trip (2) is sleeved outside the central shaft sleeve (6) and can rotate relative to the central shaft sleeve (6); and a latch resetting torsion spring (23) is wound on the latch resetting torsion spring mounting shaft (8). By the operating mechanism, the structure of the bracket is changed, and the operating mechanism is compact in structure and convenient to mount; and moreover, the miniature circuit breaker is convenient to assemble and is sensitively and reliably tripped.

Description

technical field [0001] The invention relates to an electric switch, in particular to an operating mechanism and a small circuit breaker. Background technique [0002] A miniature circuit breaker is a commonly used electrical switch, mainly used in various places such as industry, commerce, and residential buildings. Existing small circuit breakers are mainly composed of housings, moving contacts, static contacts and operating mechanisms. The operating mechanisms are mainly composed of locks, jumpers, brackets, "U"-shaped connecting rods and handles. The brackets are made of metal. Stamping forming, there is a tension spring between the bottom of the bracket and the shell, the moving contact is fixed on the bracket; the jumper is also stamped and formed by metal, the jumper is clamped on the upper right corner of the bracket and hinged with the bracket, and the lock is hinged In the middle of the left side of the bracket and the upper end of the lock is locked with the jumpe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/10
Inventor 李敏卢权胜杜润生袁高普邹城华
Owner ZHEJIANG TENGEN ELECTRIC
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