JPH0445564U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, FIGS. 1 and 2 are longitudinal sectional views of essential parts showing an embodiment of the liquid dispensing pump of the present invention, and FIG. 3 is a plan view, and FIG. FIG. 4 is a half-sectional view showing a conventional liquid dispensing pump. 2...base body, 3...outer cylinder, 4...pressing cylinder, 5...
...Pushing tube, 6...Coil spring, 7...Suction pipe.

Claims (1)

[Scope of utility model registration request] A top wall 9 extends from the upper edge of the fitting cylinder part 8 to be fitted to the outer circumference of the container mouth neck, and a raised part 10 is formed by raising the center of the top wall 9 into a cylindrical shape, and
A base body 2 having a peripheral wall 15 erected on the outside of the peripheral wall 14 of the raised portion 10 at a predetermined interval to form a compression chamber 16 between the two peripheral walls 14 and 15, and an outer periphery of the peripheral wall 15 of the base body 2 are coated with liquid. Peripheral wall 18 tightly covered and fitted
The upper end edge is provided to protrude above the base body peripheral wall 15, and
an outer cylinder 3 having a window hole 20 formed in the center of a top wall 19 extending from the upper edge of the peripheral wall 18 and a nozzle 21 projecting forward from the upper front surface of the peripheral wall 18; and an inner periphery of the base peripheral wall 15. A first sliding part 23 whose surfaces are slidably fitted together protrudes from the lower end of the outer periphery of the peripheral wall 24, and a second sliding part 23 which is slidable on the outer periphery of the raised part peripheral wall 14 is provided.
A pressing cylinder 4 having a sliding portion 25 protruding from the lower end of the inner circumference of the peripheral wall 24 and a top wall 26 extending from the upper edge of the peripheral wall 24, and an inner peripheral surface of the cylinder 4 fitted onto the upper outer periphery of the peripheral wall 24. At the same time, the outer circumferential surface is fitted into the window hole 20 of the outer cylinder 3 so as to be movable up and down, and a sliding portion 31 is provided protruding from the lower end of the outer circumference of the circumferential wall 30 to be able to slide on the inner circumferential surface of the base circumferential wall 15. a push-down tube 5 with an upper end closed, a coil spring 6 interposed between the compression tube 4 and the upper surface of the base top wall 9 to constantly bias the compression tube 4 upward; It consists of a suction pipe 7 whose upper end is fitted into the inner periphery of the lower end of the fitting cylinder part 12 which is vertically disposed below the inner periphery of a through hole bored in the center of the top wall 11, and a suction pipe 7 whose upper end is fitted into the inner periphery of the lower end of the fitting cylinder part 12, which is suspended downward from the inner periphery of a through hole bored in the center of the top wall 11. A hole 17 is bored, and a flow path 22 communicating with the nozzle 21 is formed from the through hole 17 to communicate the compression chamber 16 and the nozzle 21.
A threaded projection 27 integrally hung from the center of the lower surface of the top wall is configured to be able to be screwed into the upper end of the fitting cylinder part 12 of the raised part 10, and a through hole 28 is bored in the upper end of the compression cylinder peripheral wall 24. , a ventilation passage 32 communicating between the through hole 28 and the inside of the outer cylinder 3 is formed between the second sliding part 25 and the raised part 10 in the upwardly biased state of the pressing cylinder 4. A liquid pouring pump characterized in that a gap 33 is provided to communicate between the inside of the compression chamber 16 and the inside of the compression chamber 16.