WASHING APPARATUS FOR THE PRIVATE PARTS OF HUMAN BODY

PROBLEM TO BE SOLVED: To avoid accumulation of water used for washing, in a piston so as not to create unsanitary conditions or give unpleasant feeling to a user. SOLUTION: A piston 4 and a nozzle 5 are fitted in a cylinder 3 freely slidably. The piston 4 comprises a pressure-receiving plate 4A and a plurality of guide pieces 4B, mutually separated and projected on the rear surface of the pressure receiving plate 4A. Guide pieces 4B are projected out radially with the inner end facing each other, and the external end surface forms a sliding surface which slides along the inner peripheral surface of the cylinder 3.