Automobile door slip limiting locking mechanism

The invention discloses an automobile door slip limiting locking mechanism. The mechanism comprises a rack, a guide rail, a sliding block and a door clamping block, wherein the rack and the guide railare arranged in parallel, the sliding block is slidably arranged on the guide rail, the door clamping block is arranged on the sliding block, and a locking assembly for controllably locking the relative position between the sliding block and the rack is arranged on the sliding block. According to the automobile door slip limiting locking mechanism, the sliding block is positioned accurately, a sliding handle is self-locked through spring pressure, and door locking is firm; the sliding handle moves up and down in a sliding groove, operation is smooth and the blocking phenomenon is avoided; when the sliding block operates, through limiting by polyurethane anti-collision blocks at the two ends of a linear guide rail, deformation of the sliding block cannot be caused, and subsequent use is influenced; and the switcha