| 摘要 |
PROBLEM TO BE SOLVED: To provide a cap which is fitted on a mouth part of a container body while connecting a ring body and a cap body, where irregular deformation of a connection part between the ring body and the cap body is suppressed, and good handleability is maintained.SOLUTION: A connection part 3 for connecting a ring body 2 and a cap body 4 includes: an engagement hook part 15 provided on the cap body 4; and an engagement hole part 11 provided in the ring body 2 so as to engage with the engagement hook part 15, wherein the engagement hook part and the engagement hole part are separated from each other. When opening the cap body 4 relative to a mouth part (inner plug member 37) of the container body 35 around a cap axis O, the cap body 4 relatively rotates around the cap axis O with respect to the ring body 2, then, the engagement hook part 15 is engaged with the engagement hole part 11, and then, the cap body 4 can freely turn around the engagement hook part 15 and the engagement hole part 11, and accordingly, the cap body 4 advances to or retracts from the mouth part of the container body 35. |
