PURPOSE: To shoot trouble for a user to manually pull out or house a detergent feeding case each time housing a detergent by automatically freely putting in and out the detergent feeding case while using an actuator.

CONSTITUTION: A detergent feeding case 7 can be freely put in and out of a water pouring frame part 4 by a pulse motor 16 as the actuator. In detail, a drawing plate 18 is provided so as to be freely slid on a supporting plate 17 fixed while being extended through an inserting port 4b on the deep wall of the water pouring frame part 4 into the water pouring frame part 4, and the detergent feeding case 7 is fixed on this plate 18. Then, a screw hole 18b of a rising piece 18a on the drawing plate 18 is screwed to a shaft 19 with feeding screw directly linked to a pulse motor 16 so that the detergent feeding case 7 can be freely put in and put out of the water pouring frame part 4 through the drawing plate 18 with the rotation of the pulse motor 16. Therefore, the drawing amount of the case 7 and the moving amount of the case at the time of housing can be exactly managed by the pulse motor 16 corresponding to the number of pulses.