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Patent Searching and Data


Title:
SWITCH
Document Type and Number:
WIPO Patent Application WO/2021/053968
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a solid-insulated switch capable of improved insulation for the movable side of a vacuum valve even in a high-humidity environment without an increase in the size of an insulating film. To this end, the switch has a vacuum valve accommodating a pair of electrodes which can contact and separate from each other, a solid insulator covering the vacuum valve at one end side and having an opening on the other end side, an insulated operation rod connected, at one end thereof, to a movable-side conductor protruding toward the opening from the vacuum valve, an operation mechanism connected to the other end of the insulated operation rod and causing the movable-side conductor to move, and a shield buried inside the solid insulator so as to surround the high-voltage side of the insulated operation rod, wherein an inner wall on the opening side of the solid insulator has a substantially cylindrical protrusion part convex toward the opening both on the high-voltage side located at the ground-side leading end of the shield and on the ground side.

Inventors:
HOSONO TAKAFUMI (JP)
KOBAYASHI MASATO (JP)
TAMURA KOZO (JP)
TAI YUUKI (JP)
SATO TAKASHI (JP)
Application Number:
PCT/JP2020/028286
Publication Date:
March 25, 2021
Filing Date:
July 21, 2020
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H01H33/42; H01H33/66; H01H33/662; H02B13/035
Foreign References:
JP2002320305A2002-10-31
JP2016018649A2016-02-01
JPH0877853A1996-03-22
JPS60105035U1985-07-17
JP2005135810A2005-05-26
JP2014026854A2014-02-06
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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