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Title:
DC HIGH VOLTAGE RELAY AND CONTACT MATERIAL FOR DC HIGH VOLTAGE RELAY
Document Type and Number:
WIPO Patent Application WO/2019/176891
Kind Code:
A1
Abstract:
The present invention pertains to a DC high voltage relay having a rated voltage of at least 48 V, the DC high voltage relay comprising at least one contact pair composed of a movable contact and a fixed contact, wherein the contact force and/or the opening force of the contact pair are at least 100 gf. The movable contact and/or the fixed contact are formed of an Ag oxide-based contact material. Metal components of the contact material are composed of at least one type of metal M including at least Sn, with the remainder comprising Ag and inevitable metal impurities. The content of metal M with respect to the total mass of all metal components in the contact material is 0.2-8 mass%. The contact material has a material structure in which at least one oxide of metal M is dispersed in an Ag or Ag alloy matrix. In, Bi, Ni, and Te may also be added in addition to Sn as metal M of the contact material.

Inventors:
NISHIDE Sachihiro (820-1 Aza Oshidashi, Ichinomiya, Tomioka-sh, Gunma 52, 〒3702452, JP)
NAKAMURA Tetsuya (820-1 Aza Oshidashi, Ichinomiya, Tomioka-sh, Gunma 52, 〒3702452, JP)
ITAKURA Hiroyuki (820-1 Aza Oshidashi, Ichinomiya, Tomioka-sh, Gunma 52, 〒3702452, JP)
YANAGIHARA Nobuhito (820-1 Aza Oshidashi, Ichinomiya, Tomioka-sh, Gunma 52, 〒3702452, JP)
Application Number:
JP2019/009841
Publication Date:
September 19, 2019
Filing Date:
March 12, 2019
Export Citation:
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Assignee:
TANAKA KIKINZOKU KOGYO K.K. (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 22, 〒1006422, JP)
International Classes:
H01H1/023; C22C1/10; C22C5/06; H01H50/54; C22F1/00; C22F1/14
Foreign References:
JP2005294126A2005-10-20
JPH08269640A1996-10-15
JP2005120427A2005-05-12
Attorney, Agent or Firm:
TANAKA AND OKAZAKI (Hongo K&K Bldg, 30-10 Hongo 3-chome, Bunkyo-k, Tokyo 33, 〒1130033, JP)
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