PURPOSE: To improve productivity at the time of assembling a motor by composing the bearing means of the auxiliary bearing of the motor for driving an agitator, of a pair of bearing ribs for retaining the outer periphery and the external end surface of the auxiliary bearing, and a positioning rib for forming an inclined surface at an upper end, and by molding the ribs integrally with a nozzle main-body.

CONSTITUTION: The tension of a belt 29 is applied on the shaft 27 of a motor 10, and so at its end section, an auxiliary bearing is fitted, and its outer peripheral shape is square, and the external end of its pivotally supporting slot 34 is closed. The auxiliary bearing 33 is supported by a pair of bearing ribs 35, 36 molded integrally by a main body member 4, and a positioning rib 37 positioned at the roughly intermediate section between the ribs. A pair of the bearing ribs 35, 36 are butted to the parallel outer-peripheral plane of the auxiliary bearing 33, and are turn-stopped, and are retained, and come in contact with an external end surface, and are set in the shape of a cross-sectional area-L to block the movement to the external side. Besides, the positioning rib 37 has an inclined surface 38 to be lowered on the external side, at its upper end.