| 摘要 |
PROBLEM TO BE SOLVED: To prevent the generation of drape on a spring when a head is moved to the pressing-down position to make the bulk smaller for storage. SOLUTION: This pump is composed of a fitting cylinder 4 for fitting the pump on a neck section on a container, a cylinder 2 hanging down from the fitting cylinder 4 into the container, and an actuating component 21 having respectively a cylindrical piston 27 on the lower section of a stem 24 passing from inside the cylinder 2 through a cover-shaped section 20 blocking the upper face of the cylinder and standing and a head 29 with a nozzle 28 provided on the upper end of the stem 24. In that case, the cylindrical piston 27 is attached to the lower outer face of a female screw cylinder 25 screwed movably downward on the upper outer face of the stem 24, and an engaging cylinder 33 hanging down from the cover-shaped section 20 is fitted on the upper outer face of the female screw cylinder 25 and engaged with thereon movably up and down and not rotatbly by recessed and projected fitting means 32 and 34 provided vertically, and the upper end of a spring 30 for urging the actuating component 21 upward is engaged with the lower outer face of the female screw cylinder 25 in the uncompressed state. |
