Self-locking mechanism of handle element of horseshoe-shaped lock

The utility model discloses a self-locking mechanism of a handle element of a horseshoe-shaped lock, which comprises a handle element connected with a lock beam in a lock casing arc-shaped groove. The handle element comprises a rivet connected with the lock beam, a handle body capable of moving vertically along the rivet is sleeved on the rivet, the width of the end of the locking casing arc-shaped groove is larger than the diameter of the end of the handle body, the widths of other parts of the lock casing arc-shaped groove are smaller than the diameter of the end of the handle body, a spring is sleeved on the rivet, a gasket and a spring retaining ring are sequentially arranged above the spring, and the spring retaining ring is clamped in a conical groove on the upper portion of the rivet. The self-locking mechanism is reasonable in structure. The handle has a function of self locking.