Improved clutch lock

The invention discloses an improved clutch lock, comprising a lock body, a lock cylinder which is axially sleeved in the lock body and can rotate, and a clutch base, and the lock cylinder is provided with a plurality of blade marbles with V-shaped grooves along an axis, and the blade marbles have elasticity. The lock cylinder and the clutch base are respectively provided with a locking side column which is cooperated with the V-shaped groove on the blade marble and has elasticity, and a clutch pin. The end of the locking side column is a wedge shape. The lock body is provided with a stop pin, cooperated with the wedge-shaped end of the locking side column. The end of the clutch pin is in a wedge shape. The lock body is provided with a wedge-shaped clamping cooperated with the wedge-shaped end of the clutch pin. The clutch base is provided with a ball plunger with elasticity. The lock cylinder is fixedly provided with a sleeve. The lock cylinder realizes connection with the clutch base through cooperation of the sleeve and the ball plunger. Since the lock body is provided with the stop pin to cooperate with the wedge-shaped end of the locking side column, an axial return spring locking a side column is removed, and performance of the lock is more reliable.