| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily attach/detach an inner container to/from an outer container while preventing the outer peripheral part of the inner container from being deformed due to applied external force when attaching/detaching the inner container to/from the outer container. <P>SOLUTION: The double container 1 is configured as follows. A plurality of first engaging projecting pieces 11c projecting radially outward and placed on an opening end 12c of a mouth part 12a of an outer container 12 are formed in a mouth part 11a of an inner container 11 at intervals in a circumferential direction. A lock ring 2 is fitted in the mouth part 12 of the outer container 12 so as to be circumferentially rotatable, while axial movement is regulated. The lock ring 2 has a second engaging projecting piece 21 protruding radially inward and holding the first engaging projecting pieces 11c with the opening end 12c of the mouth part 12a of the outer container 12. The lock ring 2 is rotated to move with respect to the inner container and the outer container 12, to hold or release the first engaging projecting piece 11c by the second engaging projecting piece 21 and the opening edge 12c of the mouth part 12a of the outer container 12. <P>COPYRIGHT: (C)2013,JPO&INPIT |
