| 摘要 |
PROBLEM TO BE SOLVED: To make a resin material fluidized in molding to smoothly flow into a thin lower end part by forming a valve disc holder for regulating a stroke of a valve disc entering a recessed part at discharging liquid so that the sectional area of the base part thereof to the upper bottom surface of a recessed part is made larger than that of the lower end part thereof abutted on the valve disc. SOLUTION: By pushing in an ejector head 1 in a free state in which a lock is released, liquid in a pump body 100 is discharged from a nozzle part 5. One end of the nozzle part 5 is opened to the inner side face 4 of a recessed part 2 of a head body 3, and the other end thereof is opened to the outside. From an upper bottom surface 6 of the recessed part 2 of the head body 3, a valve disc holder 7 for regulating a stroke of a valve disc 109 entering a recessed part 2 on liquid discharge is hung. In this case, the valve disc holder 1 is formed so that the sectional area of the cross section of a base part 72 thereof to the upper bottom of the recessed part 2 is made larger than that a lower end part 71 thereof to be abutted on a valve disc 109, and the lower end part 71 is extended to a position at which it is opposed to a nozzle opening 8. |
