| 摘要 |
PROBLEM TO BE SOLVED: To provide a pump wherein water on an upper cap can be prevented from entering a pump body and screw engagement of an ejector head at the time of mounting of the pump body on a container can be prevented from loosening. SOLUTION: In the pump 1 for discharging liquid, an upper side face of an upper cap 4 and a skirt 9c of an ejector head 9 can be engaged via screws, a guard bank 8 is made to stand on an end face of a guide hole 6 on a top face of the upper cap 4, and an internal face of the guard bank 8 allows a large diameter boss 9b to be in contact. In addition, a male screw is provided on the upper side face of the upper cap 4 and a female screw is provided on an inner periphery at a lower end of the skirt 9c of the ejector head 9 to allow them to be engaged via screws with each other, while the upper cap 4 is made in a two-staged structure comprising an upper part with a small diameter and a lower part with a large diameter. |
