Title:
RESIDUAL CURRENT OPERATED CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2022/226817
Kind Code:
A1
Abstract:
The present invention provides a residual current operated circuit breaker, comprising a housing, a handle, a driving wheel, a tripping frame, a moving contact, a static contact, and an electric leakage tripping mechanism. The electric leakage tripping mechanism comprises a residual current detecting member, a residual current tripper, and an electric leakage support. The electric leakage support is pivotally connected to the housing, and the electric leakage support has a first position and a second position. In the state of no residual current, the electric leakage support is in the first position, the driving wheel is locked to the tripping frame, and part of the tripping frame is located on the motion trajectory of a tripping driving portion. When there is residual current in a circuit, the electric leakage support rotates from the first position to the second position and triggers the rotation of the tripping frame located on its motion trajectory so that the tripping frame is unlocked from the driving wheel, the moving contact is separated from the static contact, and the handle is opened. The electric leakage support rotates to the second position, a reset driving portion is located on the trajectory of the opening rotation or closing rotation of the handle, and during the opening rotation or closing rotation of the handle, the electric leakage support moves in unison with the handle and is reset to the first position.
Inventors:
GUO DEDAO (CN)
YUAN CONGFEI (CN)
HE TIANCHUN (CN)
YUAN CONGFEI (CN)
HE TIANCHUN (CN)
Application Number:
PCT/CN2021/090428
Publication Date:
November 03, 2022
Filing Date:
April 28, 2021
Export Citation:
Assignee:
ZHEJIANG ONESTO ELECTRIC CO LTD (CN)
International Classes:
H01H71/12; H01H71/06; H01H71/10
Foreign References:
| CN104134589A | 2014-11-05 | |||
| DE2812320B1 | 1979-02-01 | |||
| CN105702535A | 2016-06-22 |
Attorney, Agent or Firm:
HANGZHOU TIANHAO PATENT AGENCY CO., LTD. (CN)
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