| 摘要 |
PROBLEM TO BE SOLVED: To provide a plug body, wherein for solving problems of conventional technique, loosening due to vibration or temporal changes is prevented to allow to prevent coming-off of a plug body or leaks of contents from a port when the plug body is jointed to the port, and it is possible to easily knock the plug body, and a shape of an opposite side port to be jointed is not restricted by allowing the plug body itself to have a loosening preventive function. SOLUTION: The plug body is provided with a head part, a cylinder part projected from the head part, and a screw part formed in the cylinder part, wherein first and second screwed pressure contact faces are provided on a pressure contact side face of the screw part, and the screw part is formed into a step-like shape by equipping a step part between the first and second screwed pressure contact faces. COPYRIGHT: (C)2009,JPO&INPIT |
