Title:
VACUUM VALVE
Document Type and Number:
WIPO Patent Application WO/2017/065026
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a vacuum valve which enables a reduction in manufacturing cost by reducing the number of components and simplifying the manufacturing steps. The vacuum valve includes a vacuum container comprising: a fixed-side end plate bonded to one end of a cylindrical insulating material; a fixed-side conductor penetrating through the fixed-side end plate in an air-tight manner; a movable-side end plate bonded to the other end of the cylindrical insulating material; a bellows; and a movable-side conductor which is driven in an axial direction, the vacuum container containing a plurality of separable and connectable contacts, and an arc shield electrically insulated from the contacts, the vacuum valve being characterized in that the inside of the cylindrical insulating material is configured from a large-diameter portion, a small-diameter portion, and a boundary plane portion between the large-diameter portion and the small-diameter portion, wherein the arc shield is bonded to the boundary plane portion between the large-diameter portion and the small-diameter portion.
Inventors:
SATOU KAZUHIRO (JP)
SATO TAKASHI (JP)
TSUCHIYA KENJI (JP)
SATO TAKASHI (JP)
TSUCHIYA KENJI (JP)
Application Number:
PCT/JP2016/079198
Publication Date:
April 20, 2017
Filing Date:
October 03, 2016
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
H01H33/662
Foreign References:
| JPS49105970A | 1974-10-07 | |||
| JPH04359823A | 1992-12-14 | |||
| JPS52154661U | 1977-11-24 | |||
| JPS5619833A | 1981-02-24 | |||
| JPS59826A | 1984-01-06 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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