Circuit breaker

A technology for circuit breakers and trip buttons, which is applied in the field of improvement of operating mechanisms, can solve the problems affecting the reliability of trip buttons, the impact force of trip buttons, and the influence of mechanical strength.

Pending Publication Date: 2020-10-27
XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One is that during the closing process, due to the inertia of the moving contact, the static contact and the linkage mechanism are vulnerable to the impact force generated by the overshoot of the moving contact, which affects the mechanical st

Method used

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Embodiment Construction

[0059] To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

[0060] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

[0061] refer to Figure 1-Figure 5 As shown, as a preferred embodiment of the present invention, a circuit breaker is provided, including a housing, an operating mechanism 2 installed on the housing, a contact system 3...

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PUM

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Abstract

The invention relates to a circuit breaker, and specifically relates to an improvement of the layout structure of the circuit breaker. According to the invention, the swinging range of a moving contact is limited by a limiting mechanism by means of arranging the limiting mechanism and using elastic force for driving movement, excessive motion amount of the moving contact is prevented, violent collision between the moving contact and a static contact or other parts is avoided, overshoot generated during switching-on and switching-off is reduced, and the mechanical property is improved. When thelimiting mechanism is used for limiting, the generated impact counterforce acts on a buffer device formed by a tension spring and a connecting rod in an operating mechanism to absorb the impact energy, so that the mechanical impact on the mechanism during opening and closing is reduced, the mechanical strength is improved, the impact on a tripping piece is reduced, and the lock catch performanceis improved.

Description

technical field [0001] The present invention relates to a circuit breaker, and more particularly relates to the improvement of the operating mechanism of the circuit breaker. Background technique [0002] The opening and closing of the circuit breaker is usually determined by the movement of the moving contact, and the operating mechanism is a structure used to control the movement of the moving contact. The buckle device realizes the tripping of the circuit breaker and quickly breaks the fault current. The operating mechanism of the circuit breaker usually includes a jumper. The jumper is locked on a locking mechanism. When a fault current is generated, the locking mechanism can be driven to produce a state change (such as commonly used, using a thermal magnetic release to strike lock mechanism), so that the jumper is released from the lock mechanism; on the other hand, the jumper can be linked with the moving contact through the linkage mechanism, so that when the jumper ...

Claims

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Application Information

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IPC IPC(8): H01H33/664H01H33/666
CPCH01H33/664H01H33/666
Inventor 王应波林新德林耀国黄蔚偈卓江海张金泉
Owner XIAMEN HONGFA ELECTRICAL SAFETY & CONTROLS CO LTD
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