| 摘要 |
PROBLEM TO BE SOLVED: To surely clamp a cap so as not to be removed. SOLUTION: A drain port structure for a refrigerator or the like comprises the cap 50 having two protrusions 55 to be locked to form a sectional ridge shape having a vertex 56 at its upper edge side and provided at symmetrical positions on an outer peripheral surface. The drain port structure further comprises a drain body 30 mounted in a drain port and having two locking ribs 40 formed at symmetrical positions on an inner peripheral surface of the body 30, and a stopper 41 formed at its front end. The drain port structure also comprises a guide rib 43 continuously provided with a down gradient guide 45 at a distal end of a receiving part 44 lowered at one step rearward of each rib 40 in a circumferential direction. When the cap 50 is filled in the body 30, the vertex 56 of the protrusion 55 is received by the part 44 of the rib 43. When the cap 50 is then pressed and turned, the protrusions 55 are gradually sunk along the guide 45, detoured to a lower surface side of the rib 40, brought into contact with the stopper 41 and stopped. The cap 50 is inhibited to be removed upward in a state in which the cap 50 becomes substantially in plane with a bottom 20 in the refrigerator.
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