Locking-unlocking structure for stopping lifting body, which is lifted and fallen through repetition of pushing actions, in lifting state and for releasing stopping state of lifting body

Abstract

A locking-unlocking structure for stopping a lifting body, which is vertically lifted and falls through repetition of a pushing action, in a lifting state and for releasing a stopping state of the lifting body is provided. The locking-unlocking structure includes a lifting body, which is exactly lifted immediately upward, or falls without being fluctuated left and right and, to control lifting and falling operations of the lifting body, an actuation unit is mounted in the lifting body movably left and right, and an actuation guide unit, which guides an operation of the actuation unit, is fixedly mounted in a fixing body, and the lifting body is provided therein with a rotation groove allowing the actuation unit to be movable left and right when the lifting body is lifted or falls, and a rotation shaft rotatably coupled to the rotation groove is provided at one side of a lifting plate. The lifting plate is provided on a lower end of an opposite side thereof with a stop protrusion circulating a lifting line and a falling line branching left and right. The actuation guide unit, which is configured to guide an operation of the actuation unit, includes the lifting line having a rising curve line and the falling line having a falling curve line, the lifting line and the falling line branching left and right at a lower end of the actuation guide unit, to guide repeatedly circulating operations of the actuation unit. The actuation guide unit is provided at a central upper portion thereof with a stop groove interposed between the lifting line and the falling line to securely mount the stop protrusion in the stop groove.