170 shown in fig4 opens the opening part fig7 is a conceptual view showing the load of the regulating unit shown in fig4 referring to fig4 to 7 the regulating unit 170 includes a body portion 171 for opening and closing the opening part an attachment portion 172 formed at one side of the body portion 171 and for attaching the detergent box 160 and the body portion 171 and a load portion or load 173 biased from the body portion 171 and for applying force to cause the body portion to close the opening part the load portion 173 includes a load portion body 174 having first and second plates coupled to each other at a prescribed angle extending from the body portion 171 and a load producing portion or a prescribed amount of weight 175 arranged on the load portion body 174 and producing a load in the load direction the operation of the regulating unit 170 will be discussed the user inserts the liquid detergent or the powdered detergent into the detergent storage unit 161 once the liquid detergent or the powdered detergent is stored in the detergent storage unit 161 the liquid detergent or the powdered detergent applies force to the regulating unit 170 the loads u03c9 1 and u03c9 2 produced in the regulating unit 170 prevent the regulating.