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1. (WO2018045641) THERMAL-TRIPPING ARC EXTINGUISHING DEVICE AND METHOD FOR POWER SURGE PROTECTOR

Pub. No.:    WO/2018/045641    International Application No.:    PCT/CN2016/108033
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Thu Dec 01 00:59:59 CET 2016
IPC: H01H 9/32
Applicants: SHENZHEN COMPTON TECHNOLOGY CO., LTD
深圳康普盾科技股份有限公司
Inventors: ZENG, Rui
曾瑞
LEI, Quanxue
雷全学
WANG, Yinsheng
王寅生
CUI, Lijun
崔利俊
WU, Bo
吴波
Title: THERMAL-TRIPPING ARC EXTINGUISHING DEVICE AND METHOD FOR POWER SURGE PROTECTOR
Abstract:
A thermal-tripping arc extinguishing device and method for a power surge protector. The device comprises a box body (10), as well as a buckling structure, an arc extinguishing mechanism, and a deviation mechanism which are provided in the box body (10). The buckling structure comprises an electrode (40) provided in the arc extinguishing mechanism and a swing rod (50) supported by the deviation mechanism. The electrode (40) and the swing rod (50) are welded to form a buckling welding spot, and form an electric connection between the electrode (40) and the swing rod (50). When a passing current exceeds a defined value, the buckling welding spot is heated and melted, the deviation mechanism pushes the swing rod (50) to move towards the outside of the arc extinguishing mechanism, the electrode (40) and the swing rod (50) are separated, the arc extinguishing mechanism slides towards the buckling welding spot, and the electrode (40) is embedded into the arc extinguishing mechanism. According to the solution, during thermal protection for excessive power surge, the buckling welding spot is heated and melted, the arc extinguishing mechanism covers the electrode (40), the deviation mechanism pushes the swing rod (50) to move towards the outside of the arc extinguishing mechanism, and the electrode (40) and the swing rod (50) are separated in all directions, so that electric arcs are completely avoided between the electrode (40) and the swing rod (50) or electric arcs are prevented from creeping along the bottom and the side surface. The device has high temperature resistance, good stability, simple structure, and low costs.