Drum washing machine

An engaging groove part 25 is provided at the outer circumferential edge of a rotor 20 b of an outer-rotor type motor directly connected to the main shaft 14 of a drum 13 , and on the other hand, a drum locking device 21 is provided directly below the shaft. The drum locking device 21 is constructed so that a lock pin moves up and down in response to rotation of a torque motor, and when the lock pin advances and fits into the groove of the engaging groove pan 25 , the position of the drum 13 is fixed. Thereby, the stopping position of the drum can be fixed with a simple construction.