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Title:
VACUUM SWITCH DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/031022
Kind Code:
A1
Abstract:
The present invention provides a vacuum switch device such that buckling of an interruption spring can be prevented without increasing the weight of the movable section. The vacuum switch device has a configuration wherein: a switch and an actuator for opening and closing the switch are disposed on a straight line; a wipe spring for imparting a contacting force to a switch electrode when the switch is in an on-state and an interruption spring for causing the pole-opening of the switch electrode are provided; one end of the wipe spring and the interruption spring abuts a common first mobile spring seat; the first mobile spring seat is connected mechanically to the actuator; the other end of the wipe spring abuts a second mobile spring seat, and the second mobile spring seat is connected mechanically to the switch; and the other end of the interruption spring abuts a fixed spring seat. The vacuum switch device is characterized in that the wipe spring is disposed in a nested state inside the interruption spring, and that the second mobile spring seat has a state of being positioned outside a region flanked in the axial direction by the first mobile spring seat and the fixed spring seat, concomitantly to the opening and closing of the switch.

Inventors:
SATO TAKASHI (JP)
YABU MASATO (JP)
TAMURA KOZO (JP)
TAI YUUKI (JP)
NAKAYAMA YASUAKI (JP)
Application Number:
PCT/JP2018/020000
Publication Date:
February 14, 2019
Filing Date:
May 24, 2018
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H01H33/666; H01H33/38
Domestic Patent References:
WO2009131238A12009-10-29
Foreign References:
JP2005038630A2005-02-10
JP2006132587A2006-05-25
CN104538241A2015-04-22
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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