RELEASE-TYPE ELECTROMAGNETIC SOLENOID

摘要

PROBLEM TO BE SOLVED: To enable to obtain a stable suction status of a plunger by preventing variation of holding force of a permanent magnet, due to tilting of the plunger or the like. SOLUTION: A release-type electromagnetic solenoid comprises a plunger 9 which moves inside of a spool 10a wound with an excitation coil 10, a fixed iron core 18 provided on one face of a yoke 12, and a permanent magnet 19 of ring shape which holds the tripping spring 13 in energy-storing state. A pole-contacting spacer 20 made of a non-magnetic body is provided between the plunger 9 and the pole contacting face of the fixed iron core 18. COPYRIGHT: (C)2005,JPO&NCIPI