| 摘要 |
PROBLEM TO BE SOLVED: To render a covering lid automatically openable by thrusting a wedged projection strip between the top board of a cap and apex wall of a covering lid through compression of a lid joining member, and positively removing a plug body of the apex wall from a spout of the cap top board, and also performing disconnecting a connection strip from a joint hook. SOLUTION: When a covering lid is closed, a connection hook 26 is joined to a joint value 42. At the same time, a plug 32 of the covering lid C is fitted in the top board pour 8 of a cap B to seal the vessel A. On the other hand, when the covering lid C is opened, by pushing a press part 23 by a finger to allow a lid joint member 20 to swing in the central direction of the covering lid C, a wedge strip member 24 is thrust between the top board of the cap B and the apex wall 30 of the covering lid C. Following this, the covering lid C is pressed downward against an interference between the plug body 32 and the spout 8 so that fitting is disjoined between the plug body 32 and pour 8. After that, as the wedge projection strip 24 is thrust at a predetermined degree, joint strip 42 is disconnected from the connection hook 26, as a result, the covering lid C is automatically opened by a torsion spring 37. |
