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Auxiliary switching-in device of low-voltage circuit breaker

A low-voltage circuit breaker and gate device technology, applied in the field of auxiliary closing devices, can solve the problem that contacts cannot be closed reliably, and achieve the effects of simple structure, large contact pressure, and reliable closing

Active Publication Date: 2010-05-12
EATON HUINENG LOW-VOLTAGE ELECTRICAL (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an auxiliary closing device for low-voltage circuit breakers in order to solve the problem that the contacts far away from the operating mechanism cannot be reliably closed in more than three-pole molded case low-voltage circuit breakers

Method used

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  • Auxiliary switching-in device of low-voltage circuit breaker
  • Auxiliary switching-in device of low-voltage circuit breaker
  • Auxiliary switching-in device of low-voltage circuit breaker

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Embodiment Construction

[0014] Such as figure 1 , when the auxiliary closing device of the present invention is used in a modular structure, it is fixed above the contact 200 with a bracket 100. The auxiliary closing device can also be used in a non-modular structure, and can be fixed at other positions at this time. The auxiliary closing device is all The component is a sheet metal part. The auxiliary closing device has a rod-shaped piece 110 , the lower end of which is connected to the movable contact shaft 111 , which can rotate synchronously with the movable contact shaft 111 . The movable contact shaft 111 is arranged inside the contact 200 . The swinging member 120 is horizontally arranged above the rod-shaped member 110. The left end of the swinging member 120 is fixed on the bracket 100 with the axis 121. The swinging member 120 swings with the axis 121. The right end of the swinging member 120 is a free end and has at least two sections of arc surface. 122 and 123. The upper end of the rod...

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Abstract

The invention discloses an auxiliary switching-in device of a low-voltage circuit breaker, which is fixed above a contact by a bracket. The contact is internally provided with a rotating shaft of a movable contact; the lower end of a rod-shaped part is connected to the rotating shaft of the movable contact; a swing part is transversely arranged above the rod-shaped part; the left end of the swing part is fixed on the bracket and the right end is a free end which is provided with two sections of cambered surfaces; and the upper end of the rod-shaped part supports against the cambered surfaces, the radius of each cambered surface is equal to the rotation radius of the rod-shaped part and an elastic element is connected with the free end of the swing shaft. The auxiliary switching-in device acts only at the switching-in position and does not apply the torque onto the rotating shaft, so that the influence of the auxiliary switching-in device on the switching on / off speed is reduced to minimum and reliable switching-on can be ensured; and the auxiliary switching-in device has simple structure and easy installation and can obtain larger contact pressure by smaller elasticity.

Description

technical field [0001] The invention relates to a multi-pole low-voltage circuit breaker, in particular to an auxiliary closing device for a molded case low-voltage circuit breaker with more than three poles. Background technique [0002] Molded case circuit breakers are generally composed of operating mechanisms, contacts, trippers, etc. Among them, the contact is generally composed of a moving contact and a static contact. The position of contacting or not contacting the static contact is responsible for closing or breaking the circuit through the rotating movement of the moving contact. When there are multiple contacts, there is generally a connecting rod. Connect the rotating shafts of the moving contacts so that the rotating shafts move synchronously; the operating mechanism is responsible for controlling the movement of the moving contacts by connecting with the rotating shafts of the moving contacts. A new type of modular molded case circuit breaker generally makes e...

Claims

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Application Information

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IPC IPC(8): H01H71/10
Inventor 朱未东江长生张海燕袁天江
Owner EATON HUINENG LOW-VOLTAGE ELECTRICAL (JIANGSU) CO LTD
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