Title:
MAGNETIC LATCHING RELAY CAPABLE OF RESISTING SHORT-CIRCUIT CURRENT
Document Type and Number:
WIPO Patent Application WO/2018/095419
Kind Code:
A1
Abstract:
Disclosed is a magnetic latching relay capable of resisting short-circuit current, comprising a magnetic circuit system (1), a contact system and a pushing mechanism (2). A movable spring portion (31) comprises a movable contact (311), a movable leaf spring (312) and a movable spring leading out piece (313). The movable spring leading out piece (313) is arranged in the thickness direction of the movable leaf spring (312) and is away from one side of the movable contact (311). A fixed spring portion (32) comprises a fixed contact (321), a fixed leaf spring (322) and a fixed spring leading out piece (323). The fixed spring leading out piece (323) is also arranged in the thickness direction of the movable leaf spring (312) and is away from one side of the movable contact (311), so that the direction of current flowing through the fixed spring leading out piece (323) is opposite to the direction of current flowing through the movable leaf spring (312). The magnetic latching relay can use an electromagnetic repulsion force generated by twofold short-circuit current formed on the movable leaf spring (312) to jointly resist an electrodynamic repulsion force generated by onefold short-circuit current between the movable and fixed contacts without increasing the outline dimensions of a product and the power consumption of a coil control portion, thereby greatly increasing the pressure for closing the movable and fixed contacts so as to resist short-circuit current and meet the requirements of a product of a simple, compact and miniaturized structure.
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Inventors:
ZHONG SHUMING (CN)
DAI WENGUANG (CN)
LIAO GUOJIN (CN)
DAI WENGUANG (CN)
LIAO GUOJIN (CN)
Application Number:
PCT/CN2017/112949
Publication Date:
May 31, 2018
Filing Date:
November 24, 2017
Export Citation:
Assignee:
XIAMEN HONGFA ELECTRIC POWER CONTROLS CO LTD (CN)
International Classes:
H01H51/01
Foreign References:
| CN106504949A | 2017-03-15 | |||
| CN206322647U | 2017-07-11 | |||
| CN101231923A | 2008-07-30 | |||
| CN104362044A | 2015-02-18 | |||
| CN106024526A | 2016-10-12 | |||
| CN201754389U | 2011-03-02 | |||
| CN200710008565A | 2007-02-05 | |||
| EP1756845A1 | 2007-02-28 |
Other References:
See also references of EP 3547344A4
Attorney, Agent or Firm:
BEIJING INTELLEGAL INTELLECTUAL PROPERTY AGENT LTD. (CN)
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