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1. (WO2017038658) SWITCH-OPENING SPEED ADJUSTMENT MECHANISM AND SWITCH GEAR

Pub. No.:    WO/2017/038658    International Application No.:    PCT/JP2016/074905
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 27 01:59:59 CEST 2016
IPC: H01H 33/666
H01H 33/66
H01H 33/662
H02B 13/035
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: YAMAJI Yuichi
山地 祐一
KURODA Takashi
▲黒▼田 崇士
EBATO Teruaki
江波戸 輝明
Title: SWITCH-OPENING SPEED ADJUSTMENT MECHANISM AND SWITCH GEAR
Abstract:
The present invention is provided with: a vacuum valve comprising a fixed contact and a movable contact that contacts and separates from the fixed contact; a pin (32) that is moved in the contacting and separating direction of the movable contact by a link (5) that is rotated by an operation mechanism so as to cause the movable contact to contact and separate from the fixed contact; a contact pressure spring (1) that is in abutment with a first pipe (4) coupled to the pin (32) and that applies contact pressure to the movable contact; a second pipe (3) that is in abutment with the surface of the contact pressure spring (1) lying on the reverse side from the side that is in abutment with the first pipe (4); a washer (4A) that is welded to the other end of the first pipe (4); a headless bolt (21) that is in abutment with one end of a shaft 2 provided concentrically inside the first pipe (4), the contact-pressure spring (1) and the second pipe (3), and that penetrates through the washer (4A) so that one end is in abutment with the shaft (2); and a nut (7) that is engaged with the headless bolt (21) and that adjusts the switch-opening speed of the movable contact by compressing or releasing the contact pressure spring (2) by rotation.