| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a depressing head of a pump which is provided with the body B to operate a leverage member E by relative depress to a stem 2 and which transfers so that the valve member D in the valve chamber R opens the jetting port 30 by the action of the leverage member E when the stem 2 of the body is depressed in order to attempt the proper sealing properties and mechanical operativeness of the valve member. <P>SOLUTION: In the depressing head of a pump, the valve material consists of the bar-like body D<SB>1</SB>and a resin part D<SB>2</SB>for sealing which is fixed to the distal end portion of the body part and in which the surroundings are tightly inserted to the jetting port. Thus, the mechanical operativeness is enhanced by selecting a resin with a relatively large hardness as the body part connected with the leverage member and the liquid tightness is enhanced by selecting a relatively flexible resin as the resin part for sealing to block the jetting port. <P>COPYRIGHT: (C)2009,JPO&INPIT |
