| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems of a conventional attachment structure of a hair catcher in which an elastic member (O-ring) largely wears due to friction since it is made of a soft material, causing deterioration of locking function, and is also apt to wastefully break off due to biting in insertion, the attachment structure being such that a recessed groove is circumferentially provided in a drain plug shaft, the elastic member made of the soft material is fitted into the recessed portion, and the hair catcher is detachably installed and locked by the elastic member of the soft material. SOLUTION: In the attachment structure of the hair catcher, a recessed portion is circumferentially provided at a lower portion of the drain plug shaft, a hard C-shaped stop ring is freely fitted to the recessed groove, and a gap is retained between the inner periphery of the C-shaped stop ring and the bottom of the recessed groove so that the diameter of the C-shaped ring can be contracted. A guide cylindrical portion consisting of an axial rib for slidably holding the drain plug shaft is formed at an upper portion of the inner periphery of a cylindrical shaft suspended to the lower surface of a catching net of the hair catcher, and the drain plug shaft inserted through the guide cylindrical portion consisting of the axial rib contracts the diameter of the C-shaped stop ring, whereby the hair catcher is detachably inserted. COPYRIGHT: (C)2011,JPO&INPIT
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