JPH0418690Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a vertical pump-type liquid ejection container that ejects liquid as it is, in the form of mist, or even in the form of foam.

``Prior art'' The vertical pump type liquid ejection container was developed in the 1980s, for example.
- As shown in Publication No. 168567, a ball-type suction valve is provided at the lower end of a cylinder attached to a container body, and a stem whose lower part is inserted into the cylinder in a vertically movable state and in an upwardly biased state. A cylindrical piston is provided at the lower end, and an operating member is provided with a push-down head with a nozzle attached to the upper end of the stem rising from the mouth of the container, and a ball valve type discharge valve is installed in the upper end of the stem. The liquid in the container is sucked into the cylinder by vertical movement of the actuating member relative to the container body, and the liquid in the cylinder is jetted out from the nozzle of the push-down head via the stem.

``Problem that the invention aims to solve'' The suction and discharge valves in conventional container pump mechanisms were of the ball valve type, so if the container tipped over, the ball valve would separate from the valve seat. There was a disadvantage that the liquid inside the container leaked out through the stem and the nozzle of the push-down head.

Therefore, in order to eliminate the above-mentioned drawbacks, the present invention has developed a vertical pump type liquid pump that is easy to assemble and can be manufactured at low cost, despite forming the discharge valve as a normally closed valve biased by a valve spring. The purpose is to provide a squirt container.

"Means for solving the problems" In order to achieve the above object, the present invention
A cylinder 3 with a suction valve 7 is attached to the cylinder 3, and a stem 18 whose lower part is inserted into the cylinder in a vertically movable state and in an upward biased state, and a cylindrical piston 19 is attached to the lower end of the stem. , and a vertical pump type liquid ejection container having a push-down head 21 with a nozzle 20 attached to the upper end of the stem, and an actuating member 17 with an attached discharge valve 24, respectively, wherein the discharge valve is attached to the inner surface of the stem. Valve seat 25 and
The cylinder body 26 is fitted on the inner surface of the stem above the valve seat, and the valve element 28 is suspended from the lower end of the cylinder body 26 via an elastic piece 27 and comes into pressure contact with the valve seat. It is characterized by being integrally molded from a synthetic resin material.

"Operation" For example, when the push-down head 21 of the actuating member 17 is pushed down from the state shown in FIG. The liquid in the cylinder is ejected through the stem 18 and the nozzle 20 of the push-down head 21.

Next, when the above-mentioned push is released, the spring pushes up the actuating member 17, and the negative pressure inside the cylinder due to the push-up causes the discharge valve 24 to close, the suction valve 7 to open, and the liquid in the container body 1 to be is sucked into the cylinder through the suction valve 7.

On the other hand, when the container body 1 falls from the state shown in FIG. 1, the valve body 28 of the discharge valve 24 is held closed by the spring force of the elastic piece 27. This results in
The liquid inside the container does not leak out through the discharge valve 24 when the container falls.

"Embodiments" Examples of the present invention will be described below based on the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a container housing a liquid for squirting, and has a mouth and neck part 2 erected.

Reference numeral 3 denotes a cylinder which is vertically disposed within the container body and has an outward flange 5 placed on the top surface of the container body through a packing 4. An outward flange 5 is attached to the upper part of the cylinder 3, and an engaging protrusion 6 is attached to the outer surface of the upper end cylinder portion that projects further upward from the outward flange. A suction valve 7 is provided within the lower end of the cylinder, and a communicating pipe 8 to the valve extends downward into the container body. Note that an insertion member 9 is installed inside the cylinder to improve compression efficiency, but this is not necessarily required.

The cylinder 3 is fixed to the container body 1 by a cap-like member 10. The cap-like member 10 has an inward flange 12 attached to the upper end of a cylindrical portion 11 screwed onto the outer surface of the container neck portion 2.
As a result, the outward flange 5 of the cylinder 3 is held between the top surface of the container body and the packing 4.

A threaded tube 13 is fitted into the upper end of the cylinder 3 in a non-rotatable manner. The screw tube 13 is the cylinder 3
It has a cylindrical part 14 fitted on the inner surface of the upper end cylindrical part, and has a thread 14a on the inner surface of the cylindrical part 14.

The stem 18 of the actuating member 17 is biased upwardly by the coil spring 16 into the cylinder 3.
has been inserted. The actuating member 17 has a cylindrical piston 19 attached to the lower end of the stem 18 and a push-down head 21 with a nozzle 20 attached to the upper end of the stem 18, into which the stem 18 suspended from the top wall 22 of the push-down head is fitted. The outer surface of the cylindrical portion 23 has a thread 23a that can be screwed into the thread 14a of the threaded tube 13.

A discharge valve 24 is provided on the stem 18. The discharge valve 24 includes an inverted tapered valve seat 25 attached to the inner surface of the stem 18, and a coiled spring 27 as an elastic piece extending from the lower end of a cylindrical body 26 fitted to the inner surface of the stem 18 above the valve seat 25. The valve body 28 hangs down through the valve body 28 and comes into pressure contact with the valve seat 25.

In the illustrated example, a short tube 29 is fitted into the lower end of the stem 18, a cylindrical piston 19 is integrally attached to the lower outer surface of the short tube 29, and a valve seat 25 is integrally formed on the upper end surface. Further, the cylindrical body 26, coiled spring 27, and valve body 28 are integrally molded from a synthetic resin material.

In addition, 30 in FIG. 1 is an air introduction hole.

Therefore, in this embodiment, as shown in FIG. 2, by pushing down the actuating member 17 and screwing the push-down head cylindrical portion 23 into the threaded cylindrical portion 14, the push-down head 21 can be prevented from being accidentally inserted. It is possible to prevent the liquid from gushing out due to being pushed down by the container, and also to prevent the container from becoming bulky during transportation.

"Effects of the invention" As explained above, according to the invention, the discharge valve is formed of a normally closed valve biased by a valve spring, so that the discharge valve is kept closed even when the container topples. Therefore, it is possible to reliably prevent the liquid inside the container from leaking to the outside at this time. Further, since the valve body, valve spring, and cylinder supporting the discharge valve are integrally molded from a synthetic resin material, they can be manufactured at low cost and can be easily assembled.

[Brief explanation of the drawing]

FIG. 1 is a half-sectional view of a main part showing an embodiment of the present invention, and FIG. 2 is a diagram showing its operating state. 3... Cylinder, 17... Operating member, 24...
discharge valve.

Claims (1)

[Scope of utility model registration request] It has a cylinder 3 with a suction valve 7 attached to the container body 1, and a stem 18 whose lower part is inserted into the cylinder in a vertically movable state and in an upwardly biased state,
A cylindrical piston 19 is provided at the lower end of the stem, and a push-down head 21 with a nozzle 20 is provided at the upper end of the stem.
The operating member 1 with the discharge valve 24 attached thereto
7, in which the discharge valve is connected to a valve seat 25 attached to the inner surface of the stem, and an elastic piece 27 extending from the lower end of a cylindrical body 26 fitted to the inner surface of the stem above the valve seat. and a valve body 28 that hangs down through the valve seat and comes into pressure contact with the valve seat, and the cylinder body, the elastic piece, and the valve body are integrally molded from a synthetic resin material. Squirting container.