Patent ID: 7681706
Filing Date: 2010-03-23
Classification: F16H,Y10T

Abstract:
1. A locking device wherein said locking device comprises: a first movable member which is reciprocable between an engaging position with respect to an external mechanism and a disengaging position; a first urging member which always urges said first movable member toward the engaging position; a second movable member which is reciprocable in a direction perpendicular to said first movable member between a locking position where one end portion overlaps with an operation region end portion in a disengaging direction of said first movable member, and a unlocking position where said one end portion deviates from said operation region end portion; a second urging member which always urges said second movable member toward the locking position; and a solenoid in which a stationary core in a coil is magnetized by energization of said coil to attract a movable plate swingably attached to a frame by an attraction force acting between said stationary core and said movable plate, from a separating position which is separated from said stationary core by predetermined distance, toward said stationary core, a tip end portion of said movable plate of said solenoid is engaged with said second movable member, and, in a nonenergization period of said coil of said solenoid, by an urging force of said second urging member, said second movable member is held to the locking position and said movable plate of said solenoid is held to the separating position, said second movable member at the locking position restricts an operation of said first movable member from the engaging position to the disengaging position, and, in an energization period of said coil of said solenoid, by the attraction force acting between said stationary core and said movable plate, said movable plate of said solenoid is attracted against the urging force of said second urging member from the separating position toward said stationary core and said second movable member is operated from the locking position toward the unlocking position, thereby allowing said first movable member to be operated from the engaging position to the disengaging position.