Patent ID: 8584542
Filing Date: 2013-11-19
Classification: B60N,Y10T

Abstract:
1. A lock releasing mechanism coupled to a locking mechanism via a coupling member and configured to be capable of releasing a locked state of the locking mechanism by electrically towing the coupling member, comprising: a main switch configured to perform a current passing operation manually when releasing the locked state of the locking mechanism; a motor configured to generate a rotation output by being supplied with a power source by the current passing operation via the main switch; a conversion gear mechanism including a worm gear fixed to a rotating shaft of the motor and a base gear meshed with the worm gear and configured to convert a direction of rotation output of the motor; a converter that converts a rotating motion to a reciprocating linear motion upon receipt of a conversion output from the conversion gear mechanism, the converter including a presser and a receiver, the presser being configured to rotate integrally with the base gear about the same center of rotation and to releasably contact the receiver to apply a pressing force thereto, the receiver being configured to move integrally with a reciprocating member upon receipt of the pressing force of the presser; the reciprocating member is coupled to the coupling member and configured to linearly reciprocate between two positions of a neutral position in which the locking mechanism is in a locked state, and a full-stroke position in which the coupling member is towed to release the locked state of the locking mechanism by the converter; a cam mechanism configured to rotate integrally and coaxially with the base gear, the cam mechanism including an outer peripheral surface and a depression defined thereon; and a limit switch configured to be able to pass a current to the motor by a parallel circuit different from a current passage circuit of the main switch, wherein in a current blocking state, the reciprocating member is at the neutral position and the limit switch is separated from the cam mechanism by the depression, and in a current passing state, the limit switch contacts the cam mechanism while the reciprocating member makes one reciprocating motion between the two positions by the current passing operation via the main switch, and the reciprocating member is retained for a predetermined period at the full-stroke position while the reciprocating member makes one reciprocating motion between the two positions by the converter.