Title:
真空バルブ
Document Type and Number:
Japanese Patent JP7067879
Kind Code:
B2
Abstract:
To provide a vacuum valve capable of improving cutoff performance.SOLUTION: A vacuum valve includes an electrode, a contact piece, a coil, and a magnetic substance. The contact piece can contact with the electrode. The coil has a first wall, and a second wall projecting from the first wall, connected with the contact piece, and provided with a first slit, where a space is provided on the radial inside of the second wall, and a magnetic field is generated. The magnetic substance is placed in the space, supported on the first wall, and separated from the second wall. The second wall has a first inner peripheral surface, and a second inner peripheral surface closer to the contact piece than the first inner peripheral surface, and located on farther radial outside than the first inner peripheral surface. The magnetic substance has a first outer peripheral surface facing the first inner peripheral surface, and a second outer peripheral surface facing the second inner peripheral surface, closer to the contact piece than the first outer peripheral surface, and located farther radial outside than the first outer peripheral surface.SELECTED DRAWING: Figure 3
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Inventors:
Yoshimitsu Niwa
Akira Sakaguchi
Obo
Takashi Oshima
Yuki Sekimori
Tsuyoshi Yoshida
Akira Sakaguchi
Obo
Takashi Oshima
Yuki Sekimori
Tsuyoshi Yoshida
Application Number:
JP2017138334A
Publication Date:
May 16, 2022
Filing Date:
July 14, 2017
Export Citation:
Assignee:
Toshiba Corporation
Toshiba Infrastructure Systems & Solutions Corporation
Toshiba Infrastructure Systems & Solutions Corporation
International Classes:
H01H33/664
Domestic Patent References:
| JP61071520A | ||||
| JP2015207348A | ||||
| JP2008262772A |
Foreign References:
| US6747233 |
Attorney, Agent or Firm:
Sakai International Patent Office