| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a screwing structure that secures a sure screwing strength while reducing the amount of screwing, whereas, to provide a lid structure of a liquid-enclosed body capable of being safely used by reducing the chances of a liquid enclosed therein leaking out under a state of screwing being achieved. <P>SOLUTION: There is disclosed a high water-stopping cap structure 1 constituted by a cylindrical shape opening 20 formed in a reservoir tank 2 wherein a liquid is enclosed, the opening 20 communicating the interior 2a of the reservoir tank 2 and the exterior thereof, and by a water-stopping cap 10 that seals the cylindrical shape opening 20. The prevention of liquid leakage from the sealed cylindrical shape opening 20 is effected by having the opening's upper end part 20c tightly kept in contact with a ring packing 15, due to the opening's upper end part 20c being screwed together between the cylindrical shape opening 20 and the water-stopping cap 10, with the locking of a cap side inner screw thread 14b of an inner side ring part 13 with the body side screw thread 21b of the cylindrical shape opening 20 serving to improve the preventive capability of liquid leakage. <P>COPYRIGHT: (C)2011,JPO&INPIT |
