| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a hinge cap which facilitates opening/closing of the upper lid regardless of the form of fitting of a cap body on a container mouth, prevents suction of cooling water into a spout cylinder resulting from filling hot contents liquid, and facilitates smooth discharge or drying out of the cooling water in the case of suction of the cooling water out of the spout cylinder. <P>SOLUTION: The cap body includes an outer wall and the spout cylinder, the outer wall having a locking projection on its exterior and an arcuate surface on its interior. The upper lid includes a side wall, a seal cylinder, and an inner ring. A locked projecting line is formed on the inner peripheral surface of the side wall, and an annular tongue piece having a sloped surface is formed at the lower end of the seal cylinder. Two notches made by cutting out the locking projecting line are formed to be symmetrical in position with respect to a line L1 connecting the center of a hinge to an upper lid flange opposite to the center. When the upper lid is closed, the arcuate surface comes in pressure contact with the sloped surface to cause the seal cylinder to shift inward to ease the engagement between the locking projecting stripe and the locked projecting line and release the notches the engagement. This facilitates opening/closing of the upper lid. <P>COPYRIGHT: (C)2009,JPO&INPIT |
