| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a push-down head improved so as to always perform the stable ejection of a liquid by fitting a main body A<SB>2</SB>, that has a valve member A<SB>3</SB>and a lever member A<SB>4</SB>, to the mounting member A<SB>1</SB>mounted on the upper end part of a stem 21 erected so as to be pushed in an upward energizing state, having good liquid drainage, facilitating push-down at the time of ejection of the liquid, smoothly performing the operation of the main body A<SB>2</SB>including the valve body and not having trouble that a jet orifice 47 is set to an open state. <P>SOLUTION: A communication cylinder 35, which is erected so as to communicate with the inside of the stem 21 through a first variable wall 34, is provided to the connection member of the mounting member A<SB>1</SB>and the main body A<SB>2</SB>while a second variable wall 60 is provided between the outer periphery of the intermediate part in the forward and rearward direction of the valve members A<SB>3</SB>and the inner periphery of a valve chamber R to demarcate the valve chamber before and behind and the part movable in a form of a slide surface with a piston in a liquidtight state is eliminated. <P>COPYRIGHT: (C)2008,JPO&INPIT |
