| 摘要 |
PROBLEM TO BE SOLVED: To provide a vessel fitting cover body in which a cover body can be easily detached from a used vessel, and the cover body is less easily detached by an unconscious operation of a user. SOLUTION: An inwardly directed rib 11a is formed on a part facing a chipped range 12a of an inner cylindrical part 12 of an outer cylindrical part 11 of the cover body 1 in a separated manner from the inner cylindrical part 12. When a protruded operation part 11c is positively pressed while separating wastes, the inner cylindrical part 12 is deformed by the effect of the chipped range 12a of the inner cylindrical part 12 and the inwardly directed rib 11a, and the cover body 1 is easily detached from a vessel body 41. In a very small pressure or in a very short time in which the user unconsciously presses the protruded operation part 11c, the inner cylindrical part 12 is not deformed, and detachment of the cover body 1 from the vessel body 41 can be prevented. A cover body with an outwardly directed rib formed in a separate manner from the outer cylindrical part may be formed, or a cover body with a different chipped part from the chipped range may be formed in the inner cylindrical part. |
