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1. (WO2018059479) DC CONTACTOR WITH DUAL MICRO SWITCHES

Pub. No.:    WO/2018/059479    International Application No.:    PCT/CN2017/103931
Publication Date: Fri Apr 06 01:59:59 CEST 2018 International Filing Date: Fri Sep 29 01:59:59 CEST 2017
IPC: H01H 50/08
H01H 50/44
H01H 50/54
Applicants: XIAMEN HONGFA ELECTRIC POWER CONTROLS CO., LTD.
厦门宏发电力电器有限公司
Inventors: CHEN, Songsheng
陈松生
ZHONG, Shuming
钟叔明
JIAN, Yongqi
简勇奇
SHI, Shengsheng
施生圣
Title: DC CONTACTOR WITH DUAL MICRO SWITCHES
Abstract:
A DC contactor with dual micro switches (3, 4) comprises a coil (1), a push rod (2) and two micro switches (3, 4). The two micro switches (3, 4) are respectively installed at two predetermined positions in the contactor. The push rod (2) is provided with two toggle arms (21, 22), which are respectively matched with the two micro switches (3, 4). When a main contact point (52) of the contactor is contacted, the push rod (2) causes the two micro switches (3, 4) to be connected or disconnected or to change a contact point through the toggle arms (21, 22) according to a predetermined means. By setting one of the micro switches as a normally closed second micro switch (4) and by means of cooperation between the second micro switch (4) and the second toggle arm (22) of the push rod (2), power saving is achieved, eliminating a complex circuit structure for performing power saving in a circuit board of the prior art, and providing a simpler circuit structure and better applicability.