The utility model discloses a retractable door bar, including the door bar body, the door bar body front side upper position fixedly connected with the lock box, the front side fixedly connected with the box cover of lock box, the position of box cover rear side middle has two
muscle plate structures of up and down, the rear side of box cover
muscle plate structure is equipped with the clamping groove structure, the front side slidingly connected with the moving block of box cover. The utility model first presss and holds the block to the rear side, makes the protruding
block structure on spacing block to separate the clamping groove structure on box cover
muscle plate structure, then promotes the moving block to the left side, makes spacing block to move to the left side, and the protruding block and the blocking block are pushed to the left side to spacing block, and the reverse
ratchet structure on protruding block rotates downward with pin shaft as center, and the reverse
ratchet structure on protruding block separates
ratchet box, at this moment, retractable door bar can be loosened, and retractable door bar can continue to retract, and the locking retractable door bar can be made opposite to the above operation step, so as to reach the effect that convenient operation.