Title:
PERMANENT MAGNET RETARDER
Document Type and Number:
WIPO Patent Application WO/2017/092557
Kind Code:
A1
Abstract:
A permanent magnet retarder comprises a housing (1) and a cylinder (2). The cylinder (2) is inserted into the housing (1) and can move up and down relative to the housing (1). The housing (1) is further provided with a conductor (3) and a permanent magnet (4) therein which are disposed oppositely and constitute a permanent magnetic eddy current deceleration assembly. The conductor (3) is fixedly disposed on an inner wall of the housing (1) and the permanent magnet (4) is fixedly disposed on the cylinder (2); alternatively, the conductor (3) is fixedly disposed on the cylinder (2) and the permanent magnet (4) is fixedly disposed on the inner wall of the housing (1). The housing (1) is further provided with an upper return permanent magnet (5) and a lower return permanent magnet (6) therein disposed oppositely. The attraction or repulsion generated between the upper return permanent magnet (5) and the lower return permanent magnet (6) can make the cylinder (2) return to zero position automatically. The permanent magnet retarder has a simple structure, high reliability and low maintenance and repair costs, and is suitable for wide use.
Inventors:
WANG XIANGDONG (CN)
ZHOU LIPING (CN)
ZHOU LIPING (CN)
Application Number:
PCT/CN2016/105297
Publication Date:
June 08, 2017
Filing Date:
November 10, 2016
Export Citation:
Assignee:
WANG XIANGDONG (CN)
International Classes:
B61K7/02
Foreign References:
| CN105365846A | 2016-03-02 | |||
| CN200948803Y | 2007-09-19 | |||
| CN202863468U | 2013-04-10 | |||
| CN2540344Y | 2003-03-19 | |||
| CN1676388A | 2005-10-05 | |||
| CN1076899A | 1993-10-06 | |||
| US3232385A | 1966-02-01 |
Attorney, Agent or Firm:
NANJING ZHONGSHAN PATENT AGENT CO., LTD. (CN)
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