JPS6411594A - Washing machine - Google Patents

Abstract

PURPOSE: To prevent a breaking accident by a pressure applied to an auxiliary blade and the falling accident of the auxiliary blade by constituting an annular groove by a shaft part and a rib and positioning the upper end part of a blade boss inside the annular groove at the time of mounting the auxiliary blade. CONSTITUTION: An annular rib 72 formed near the base part of the shaft part 55 forms a triangular shape similarly to the shaft part 55 and constitutes the annular groove 73 in cooperation with the shaft part 55. When the shaft part 55 is fitted to a shaft hole 47, the upper end part 46a of the blade boss 46 is inserted from a lower part to the inside of the annular groove 73. In this state, the lower end of the rib 72 is brought into contact with the outer side face of the blade boss 46 and it cooperates with the shaft part 55, supports the blade boss 46 from both sides and prevents the play of the auxiliary blade 50. Also, three supporting ribs 74 formed at an equal interval inside the annular groove 73 are abutted to the upper end part 46a of the blade boss 46 and support it against the pressure from an upper part to the auxiliary blade 50. Thus, the breaking accident of the auxiliary blade and a rotary blade and the falling accident of the auxiliary blade are prevented.