Title:
THREE-POLE COMBINED ISOLATING SWITCH WITH HIGH SAFETY
Document Type and Number:
WIPO Patent Application WO/2023/202162
Kind Code:
A1
Abstract:
A three-pole combined isolating switch with high safety, the isolating switch comprising a switch frame, wherein the switch frame is sequentially provided with a first contact, a second contact, a third contact and a fourth contact from top to bottom; contact blades are respectively arranged between the first contact and the second contact, between the second contact and the third contact, and between the third contact and the fourth contact; the middle of the switch frame is further provided with a driving shaft, which is horizontally placed; and one end of the driving shaft is driven by an electric device, and the other end of the driving shaft is provided with a linkage mechanism. In the isolating switch, the first contact blade, the second contact blade and the third contact blade are simultaneously controlled by means of the linkage mechanism. Since opening and closing states of the contact blades are not identical, a situation wherein the three contact blades are simultaneously closed will not occur during use, such that an electrical power accident caused by means of a misoperation made by an operator is avoided, thereby improving the use safety of the isolating switch.
Inventors:
ZHANG TAO (CN)
DING SHENGFEI (CN)
LI RONGMING (CN)
DING SHENGFEI (CN)
LI RONGMING (CN)
Application Number:
PCT/CN2022/144416
Publication Date:
October 26, 2023
Filing Date:
December 31, 2022
Export Citation:
Assignee:
ZHENJIANG DANGAO ELECTRIC APPLIANCE CO LTD (CN)
International Classes:
H01H31/08; H01H31/02
Foreign References:
| CN217426623U | 2022-09-13 | |||
| CN206611073U | 2017-11-03 | |||
| CN2325867Y | 1999-06-23 | |||
| FR2694444A1 | 1994-02-04 |
Attorney, Agent or Firm:
JIANGSU DEYAO INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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