Title:
DC HIGH VOLTAGE RELAY, AND CONTACT MATERIAL FOR DC HIGH VOLTAGE RELAY
Document Type and Number:
WIPO Patent Application WO/2021/049469
Kind Code:
A1
Abstract:
The present invention pertains to a DC high voltage relay having a rated voltage of at least 48 V and having at least a pair of contact arms consisting of a movable contact and a fixed contact, wherein the contact force and/or the release force of the contact arms are at least 100 gf. In the DC high voltage relay according to the present invention, the movable contact and/or the fixed contact are made of an Ag-oxide-based contact material. Metal components in the contact material consist of at least one metal M essentially including Zn, with the remainder comprising Ag and inevitable impurities, and the content of metal M is 0.2-8 mass% with respect to the total mass of all the metal components in the contact material. In addition, the contact material has a material structure in which one or more oxides of metal M having an average particle size of 0.01-0.4 μm are dispersed in a matrix composed of Ag or an Ag alloy.
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Inventors:
NISHIDE SACHIHIRO (JP)
NAKAMURA TETSUYA (JP)
YANAGIHARA NOBUHITO (JP)
NAKAMURA TETSUYA (JP)
YANAGIHARA NOBUHITO (JP)
Application Number:
PCT/JP2020/033849
Publication Date:
March 18, 2021
Filing Date:
September 08, 2020
Export Citation:
Assignee:
TANAKA PRECIOUS METAL IND (JP)
International Classes:
C22C5/06; C22C1/05; H01H1/023; H01H50/54
Domestic Patent References:
| WO2019176891A1 | 2019-09-19 |
Foreign References:
| JP2004063190A | 2004-02-26 | |||
| JPH09134632A | 1997-05-20 | |||
| JP2011246791A | 2011-12-08 | |||
| JPH08269640A | 1996-10-15 | |||
| JPH07235248A | 1995-09-05 | |||
| JP2007012570A | 2007-01-18 | |||
| JP2000309834A | 2000-11-07 | |||
| JP2012003885A | 2012-01-05 | |||
| JP2012003885A | 2012-01-05 |
Other References:
See also references of EP 4029960A4
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (JP)
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