| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable accurate opening/closing operation without using a metallic spring, and in addition, to facilitate assembly at a low cost. <P>SOLUTION: The stopper includes: a stopper body 3 freely attachably and detachably fitted to the upper opening of a container 2; a lid 4 pivoted so as to be freely turned on the stopper body 3 on the rear side of the stopper body to open/close a liquid flow path 37; and a non-metallic elastic member 61 that energizes the lid 4 in the opening direction. The narrow and long resilient member 61 is installed along the outer periphery 6a of a turning shaft 6 in the lid 6, and the resilient member 61 is allowed to energize the lid 4 in the opening direction by allowing a contracting force in the longitudinal direction of the resilient member 61 to act in the tangential direction of the turning shaft 6. The lid 4 can be energized in the opening direction without using the metallic spring, and further this energization is ensured by the contracting force of the resilient member 61. Additionally, since the resilient member 61 is a rubbery material, the cost is reduced. <P>COPYRIGHT: (C)2008,JPO&INPIT |
