Patent ID: 8220879

Claim:
An interlocking device for a slide rail, fixedly mounted on the end of a slide rail, connected with other interlocking devices through a cable, and after the slide rail is actuated, other slide rails are locked, the interlocking device comprising: a fixed base, fixedly mounted on the end of the slide rail, a first rail and a second rail being provided in parallel on the fixed base, an engagement portion being provided on one end of the second rail, a first hook portion being provided adjacent to the first rail, and a return groove being provided at one side of the second rail; a sliding block, disposed within the first rail, a first hook being provided on one end portion of the sliding block to allow the cable to pass through, a hook post being provided on the other end portion of the sliding block; a rotary disc, disposed within the second rail, the rotary disc being provided with a through hole to allow the hook post to be hooked in the through hole, a second hook portion and a third hook portion being provided adjacent to the through hole, a position-limiting portion being provided at one side of the through hole, and a pivotal connection portion being provided at one side of the position-limiting portion; a stop block, one end portion of the stop block being pivotally connected to the pivotal connection portion of the rotary disc so that the stop block swings around the position-limiting portion as a fulcrum, a fourth hook portion being provided adjacent to the pivotal connection portion, an engaging portion being provided on the other end portion of the stop block to allow a pulley of the slide rail to be placed in the engaging portion, so as to drive the stop block, the sliding block and the rotary disc to move synchronously; and a first spring and a second spring, disposed respectively between the first hook portion and the third hook portion and between the second hook portion and the fourth hook portion to drive the stop block, the rotary disc, and the sliding block to be returned back to the original positions; whereby when the slide rail hooks and moves the stop block, the slide rail synchronously drives the rotary disc to slide and rotate and drives the sliding block to slide, and thus draws the cable to lock the other slide rails.