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Title:
CONTACT DEVICE AND ELECTROMAGNETIC SWITCH
Document Type and Number:
WIPO Patent Application WO/2021/169949
Kind Code:
A1
Abstract:
Provided by the present application are a contact device and an electromagnetic switch. The contact device comprises a static contact and a moving contact assembly, the moving contact assembly comprises a push rod, a contact support, an insulating sleeve, a moving contact, and a contact spring. The insulating sleeve is fixedly sleeved over a first end of the push rod, a second end of the push rod is used for connection to a drive device, the contact support is fixedly sleeved over the insulating sleeve, the moving contact and the contact spring are both movably sleeved over the insulating sleeve, the contact spring elastically abuts between the moving contact and the contact support, the moving contact and the static contact are arranged to oppose each other in the direction in which the push rod extends, and the moving contact can be connected to the static contact as driven by the push rod. Since the insulating sleeve is sleeved over the first end of the push rod, and the moving contact is sleeved over the insulating sleeve, the insulating sleeve can achieve insulating isolation between the push rod and the moving contact, thereby reducing the safety risk of the contact device and the electromagnetic switch.

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Inventors:
TIAN XIAOKANG (CN)
CHEN TAIXIAN (CN)
ZHAO FUGAO (CN)
Application Number:
PCT/CN2021/077456
Publication Date:
September 02, 2021
Filing Date:
February 23, 2021
Export Citation:
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Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H01H33/53; H01H50/58
Domestic Patent References:
WO2020031068A12020-02-13
Foreign References:
CN207743137U2018-08-17
CN207052537U2018-02-27
KR20160121961A2016-10-21
CN2764054Y2006-03-08
JPH07130269A1995-05-19
CN212161708U2020-12-15
CN202020218336U2020-02-26
Other References:
See also references of EP 4102532A4
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
Download PDF:
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