| 摘要 |
PROBLEM TO BE SOLVED: To especially provide a cap structure capable of being shared in regard to a plurality of opening portions having slight inner diameter difference or outer diameter difference, by providing a cap structure enabling sharing of a cap for temporary fixing. SOLUTION: The piping cap is equipped with a cylindrical portion 11 locking to a small diameter opening. At an end portion of the cylindrical portion 11, a locking portion 15 comprising a first extending portion 16 extending outward in a radial direction of the cylindrical portion 11, and a second extending portion 17 extending from a tip end portion of the first extending portion in a longitudinal direction of the cylindrical portion 11 while spacing from the cylindrical portion 11 is provided. The locking portion 15 covers a large diameter opening portion, and is temporary fixed to the large diameter opening portion by an inner diameter of the locking portion 15. Therefore, the cylindrical portion 11 can be inserted and fitted in the small diameter opening portion to be locked, and the large diameter opening portion can be also locked. Consequently, the cap can be shared in regard to the opening portions having slight diameter differences. COPYRIGHT: (C)2004,JPO
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