Switchgear and operation mechanism for the same

Patent metadata

Field	Value
Publication number	US-9070519-B2
Application number	US-201314070859-A
Country	US
Kind code	B2
Filing date	Nov 4, 2013
Priority date	Aug 9, 2011
Publication date	Jun 30, 2015
Grant date	Jun 30, 2015

Abstract

The circuit opening operation section of an embodiment of switchgear operation mechanism comprises: a circuit opening electromagnetic solenoid having a fitting structure that is provided with a step; and a solenoid spacer for adjusting the distance between a circuit opening trigger mechanism and the circuit opening electromagnetic solenoid. The circuit opening solenoid has: a solenoid housing fixed in position by way of the solenoid spacer; a plunger; and a stopper fitted to the solenoid housing so as to limit the sliding motion of the plunger in the plunger returning direction when the coil is not supplied with electric power. The limiting position of the stopper is adjustable.

First claim

What is claimed is:

1. A switchgear operation mechanism for driving a movable contact to reciprocate so as to bring the switchgear from a closed circuit condition to an open circuit condition and vice versa, the mechanism comprising:
a circuit opening spring that operates to open a circuit by discharging energy;
a circuit opening trigger mechanism that maintains a state of energy accumulation of the circuit opening spring;
a circuit opening operation section that releases the…

Assignees

• Toshiba Kk

Inventors

• Marushima Satoshi
• Ohda Yoshiaki
• Shimizu Masaharu
• Inoue Tooru
• Kobayashi Yoshikata

Classifications

• H01H3/32 Primary

  Electricity · mapped topic

• H01H33/40

  Electricity · mapped topic

• H01H33/42

  Electricity · mapped topic

• H01H71/2463

  Electricity · mapped topic