发明授权
US06248969B1 Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor
失效
真空断路器，真空管和用于此的真空管电极
- 专利标题： Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor
- 专利标题（中）： 真空断路器，真空管和用于此的真空管电极
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申请号： US09154840申请日： 1998-09-17
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公开(公告)号： US06248969B1公开(公告)日： 2001-06-19
- 发明人: Katsuhiro Komuro , Yoshitaka Kojima , Noboru Baba , Ryo Hiraga , Toru Tanimizu , Yoshimi Hakamata , Katsumi Kuroda , Hitoshi Okabe , Shigeru Kikuchi
- 申请人： Katsuhiro Komuro , Yoshitaka Kojima , Noboru Baba , Ryo Hiraga , Toru Tanimizu , Yoshimi Hakamata , Katsumi Kuroda , Hitoshi Okabe , Shigeru Kikuchi
- 优先权： JP9-254687 19970919
- 主分类号： H01H3366
- IPC分类号： H01H3366
摘要：
Disclosed is a vacuum circuit breaker including a small-sized electrode structure capable of reducing deformation with age thereby enhancing the reliability and a vacuum bulb and a vacuum bulb electrode used for the breaker. In the vacuum circuit breaker, each of a fixed electrode and a movable side electrode includes an arc electrode made from particles of a refractory metal material, a high conductive metal material and a low melting point metal; an electrode supporting portion, made from the high conductive metal material, for supporting the arc electrode; a back conductor having a diameter smaller than the electrode supporting portion; and an external side connecting portion having a diameter larger than that of the back conductor. The arc electrode is integrated with the electrode supporting portion, back conductor, and external side connecting portion by the high conductive metal material, preferably, by melting of the highly conductive metal material.