Freewheel lock patent introduction

The utility model relates to a mechanical lock, in particular to an idle lock. The utility model discloses an idle lock, which comprises a key, a lock core, a lock tongue, a lock body, a resistance steel ball, a spring or a resistance elastic piece and a lock ring, and the outer circle of the rotary lock sleeve is provided with a stop groove or a stop Retreating or retracting the shoulder, the lock body is provided with a corresponding anti-retracting pin or a retaining groove or a retracting shoulder at a corresponding portion of the rotating locking sleeve; or the outer circumference of the rotating locking sleeve and the inside of the locking body The circle is respectively provided with a retaining groove, the retaining snap ring is embedded in the retaining groove, or the outer circumference of the rotary lock sleeve is not provided with a stop device, and only a rotating sleeve is arranged on the end surface of the lock body to prevent the rotary lock sleeve from exiting the lock body. The anti-return cover is an idle lock with good anti-theft performance, simple structure, easy processing, strong rigidity and low failure rate.