Buckle self -locking mechanism

The utility model relates to a buckle self -locking mechanism, include with treat cassette that the fixture is connected and with the detachable clamping part of being connected of cassette, extend a plurality of archs and terminal right angle bending on the clamping part perpendicularly and form a plurality of claws and collude, be equipped with a plurality of and claw on the cassette and collude complex L type hole, the claw colludes from the base in L type hole and gets into, slides in the side in L type hole, colludes the cooperation through the claw and realizes fixedly, be equipped with the back -off in at least one L type hole top of cassette, the back -off is provided with abrupt tooth on the base in L type hole with the department that corresponds that the side has a common boundary, and after L type hole side was gone into to the claw cropping, suddenly the tooth colluded to claw firmly and prevents the roll -off. The utility model discloses a buckle self -locking mechanism has self -locking function's back -off through the setting, solves to lead to the problem that the firm power of buckle is not enough, the convenience that does not influence the assembly simultaneously again and dismantle in the permanent wearing and tearing of harsh conditioned disjunction.