| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide the hand pump for a spray capable of being easily assembled, with the valve element readily changed and having a check valve. SOLUTION: A valve seat 23 surrounding an air hole 22 in the lower end face of a cylinder 2, a cylindrical side wall 24 concentric with the seat and a bottomed cylindrical cap 30 capable of being freely slidably engaged with the side wall 24 and having a valve rod guide cylinder 34 and an air opening 35 are provided to the hand pump for a spray, a protrusion 25 furnished on the periphery of the side wall is inserted into an L-shaped notch 32a extending from the open edge of the cap in the axial direction and then bnt circumferentially to a specified length, hence the cap is freely detachably engaged with the side wall, and the valve element is pressed on the seat by a spring member provided between the seat 23 and the guide cylinder 34.</p> |
