SWITCHING APPARATUS AND METHOD FOR MONITORING STATE THEREOF

WIPO Patent Application WO/2020/208978

A1

With a view to measuring an input holding force without involving complex calculation, not to mention enabling retrofitting of a leakage magnetic flux measurement means, the switching apparatus according to the present invention is provided with: a main circuit switching unit; an electromagnetically-operated device for performing switching operation on said main circuit switching unit; and a link mechanism for linking the main circuit switching unit and the electromagnetically-operated device. The electromagnetically-operated device at least has an electromagnet that comprises: a movable iron core and a fixed iron core that are disposed so as to face each other; a coil disposed around the movable iron core and the fixed iron core; a permanent magnet disposed around the movable iron core; and a case for accommodating the movable and fixed iron cores, the coil, and the permanent magnet. The apparatus is characterized in that a lead switch that performs switching in accordance with a leakage magnetic flux of the permanent magnet is provided outside the case.

SATO TAKASHI (JP)
SATOU SHINDAI (JP)
SHISHIDO MASANORI (JP)
KOBAYASHI MASATO (JP)
SATOU KAZUHIRO (JP)

PCT/JP2020/009297

October 15, 2020

March 05, 2020

Click for automatic bibliography generation  

HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

H01H33/00; H01F7/06; H01H33/38; H01H33/666

JP2014002879A	2014-01-09
JPH01144583U	1989-10-04
JP2013221698A	2013-10-28
JP2002162141A	2002-06-07
JP2006004902A	2006-01-05

POLAIRE I.P.C. (JP)

View/Download PDF      PDF Help

Previous Patent: AIR HEATING AND BLOWING SYSTEM

Next Patent: STEEL SHEET AND PRODUCTION METHOD FOR SAME