Title:
QUICK TRIPPING APPARATUS FOR CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2023/284898
Kind Code:
A1
Abstract:
The present invention relates to the field of low-voltage electrical appliances, and in particular, to a quick tripping apparatus for a circuit breaker. A contact system thereof comprises a moving contact mechanism and a static contact. The moving contact mechanism comprises a contact support and a moving contact. The moving contact mechanism further comprises a contact spring, and two ends of the contact spring are respectively connected to the moving contact and the contact support. The quick tripping apparatus further comprises a first transmission structure. The first transmission structure is in driving fit with the contact spring, and the first transmission structure rotates along with the contact spring. When a short-circuit current flows through the contact system, an electric repulsive force between the moving contact and the static contact repels the moving contact, such that the moving contact rotates relative to the contact support. The moving contact, by means of the contact spring, drives the first transmission structure to rotate, and the first transmission structure drives an operating mechanism to trip. The present quick tripping apparatus is simple in structure and convenient to assemble, and can achieve quick tripping of the circuit breaker. The present invention also relates to a circuit breaker comprising the quick tripping apparatus, which can avoid the circuit breaker from closing for a second time.
Inventors:
AO DENGGUI (CN)
LU DENGYU (CN)
FU HAO (CN)
XU YONGFU (CN)
YUAN XIAOQIN (CN)
YAN LIJUN (CN)
WANG CHUNCUI (CN)
LU DENGYU (CN)
FU HAO (CN)
XU YONGFU (CN)
YUAN XIAOQIN (CN)
YAN LIJUN (CN)
WANG CHUNCUI (CN)
Application Number:
PCT/CN2022/118296
Publication Date:
January 19, 2023
Filing Date:
September 13, 2022
Export Citation:
Assignee:
CHINT LOW VOLTAGE ELECTRICAL TECH CO LTD (CN)
International Classes:
H01H71/10
Foreign References:
| CN216624153U | 2022-05-27 | |||
| CN102103948A | 2011-06-22 | |||
| CN204303699U | 2015-04-29 | |||
| CN112466726A | 2021-03-09 | |||
| CN101030506A | 2007-09-05 | |||
| US20200152408A1 | 2020-05-14 | |||
| CN1366698A | 2002-08-28 | |||
| US5103198A | 1992-04-07 |
Attorney, Agent or Firm:
BEIJING JOYAN INTELLECTUAL PROPERTY OFFICE (CN)
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