Remotely controllable lock

Abstract

A remotely controllable lock includes a turn knob rotatably mounted to a main housing. The turn knob includes an axle rod with a non-circular hole through which a spindle of the lock extends. A power element is mounted in the main housing for driving a relatively larger gear of a power device. The relatively larger gear and a relatively smaller gear are integrally formed on a common shaft that has two ends to which two slide blocks are pivotally mounted, respectively. The slide blocks are mounted in a receiving hole in the main housing and a receiving hole in a fixing plate. The slide blocks are biased by elastic elements. One of the slide blocks includes a stub that extends beyond the associated receiving hole to come in contact with a sensor. The sensor sends out a signal to stop the power element. The relatively smaller gear meshes with a control gear of a control device. The control gear is rotatably mounted around the axle rod of the turn knob. The control gear comprises a positioning block and an eccentric actuating block. When the control gear rotates, the actuating block comes in contact with one of an upper pressing block and a lower pressing block of a movable plate so as to make the positioning block come in contact with a sensor to send out a signal for stopping the power element. The movable plate includes a rack that meshes with a sector-toothed gear which, in turn, is mounted around a non-circular portion of the axle rod to rotate therewith. The movable plate includes a pressing rod that is capable of coming in contact with a switch for sending out a signal to control execution of driving of the power element. The fixing plate is mounted to the main housing by fasteners and includes an axle hole for rotatably supporting the axle rod to thereby retract/extend the dead bolt by a spindle.

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