| 摘要 |
<P>PROBLEM TO BE SOLVED: To mount a cap to a container neck by means of other than screwing and perform sealing well. <P>SOLUTION: A plurality, for example four, of first locking protrusions 13 are circumferentially formed at circumferentially equal intervals on an outer circumference of the neck 1c of the container body 1. The first locking protrusion 13 extends in the circumferential direction of the neck 1c, and a sloped cam surface 13a and a holding surface 13b perpendicular to an axis of the neck 1c are formed on an under part of the first locking protrusion. Four engagement protrusions 20 are formed at circumferentially equal intervals on an inner circumference of a skirt 2b of the cap 2. When the cap 2 is rotated in a fastening direction from a state that the cap is just put on the neck 1c, the engagement protrusions 20 are guided by the cam surfaces 13a of the first locking protrusions 13 to reach the holding surfaces 13b, respectively. Upon this engagement, the cap 2 is axially displaced to press a seal portion 3. <P>COPYRIGHT: (C)2012,JPO&INPIT |
