JP3751400B2 - Liquid ejector - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a so-called vertical pump type liquid ejector.
[0002]
[Prior art]
The cylinder is suspended from the upper part of the mounting cylinder to be fitted to the outer surface of the container body neck and neck, and the cylinder has a cylindrical piston at the lower part of the stem, and a pressing head with a nozzle is fitted to the upper part of the stem. The actuating member is erected by penetrating the guide cylinder fitted to the inner surface of the cylinder upper end and upwardly biased by a spring fitted into the cylinder, and is provided at the bottom of the cylinder by the vertical movement of the actuating member. A so-called vertical pump type liquid ejector that sucks liquid into the cylinder through the suction valve and allows the liquid in the cylinder to be ejected from the nozzle through the discharge valve provided in the operation member is widely used. Yes.
[0003]
[Problems to be solved by the invention]
In the liquid ejector, the spring for biasing the operating member upward is made of metal, and all other members are made of synthetic resin. When the metal and synthetic resin are mixed in this way, crushing treatment performed after product disposal is performed. In some cases, the metal may damage the teeth of the crusher.
[0004]
According to the present invention, the upward biasing of the operating member is performed by an elastic member formed of an elastomer, and all the constituent members of other liquid ejectors are formed of a synthetic resin material so that the above-mentioned defects can be removed. .
[0005]
[Means for Solving the Problems]
As a first means, the cylinder 11 is suspended from the upper part of the mounting cylinder 1 to be fitted to the outer surface of the container mouth / neck part, and the cylindrical piston 22 is provided at the lower part of the stem 21 from the inside of the cylinder. The actuating member 25 fitted with the push-down head 24 with the nozzle passes through the stem insertion cylinder 5 fitted to the inner surface of the upper end of the cylinder and is urged upward to stand up and move up and down. In the liquid ejector provided to suck up the liquid in the container into the cylinder and to eject the liquid in the cylinder from the nozzle 23 through the stem,
The elastic cylinder 33 is erected from the base cylinder 32 fitted directly or indirectly to the outer surface of the cylinder portion 3 or the cylinder upper end portion standing up from the inward flange of the mounting cylinder, and the upper portion of the elastic cylinder is bent downward and inwardly. And provided with an elastic member 31 made of elastomer having a fitting short tube 34 attached to the lower end of the bent portion,
By fixing the fitting short cylinder 34 to the upper outer surface of the liquid discharge rising pipe portion 28 formed by the stem and the stem fitting cylinder hanging from the pressing head, the operating member 25 is operated by the elastic member 31. Was biased upward, and all other components were made of synthetic resin.
[0006]
As a second means, the first means is provided and the upper end portion of the stem is suspended from the push-down head, and is fixed to the inner surface of the stem fitting cylinder 27 having a larger outer diameter than the stem, and the fitting short cylinder 34 is fixed to the stem. The upper end face of the fitting short cylinder was engaged with the lower end face of the stem fitting cylinder 27 by fitting to the upper part.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
First, a conventionally known structure will be briefly described. Reference numeral 1 denotes a mounting cylinder that is screwed onto the outer surface of the container body neck. In the illustrated example, the tube portion 3 is erected from the inner periphery of the inward flange 2 attached to the upper end of the mounting tube, and the stem insertion tube 5 is suspended from the inner periphery of the inward flange-like top wall 4 attached to the upper end of the tube portion. The equal cylinder portion, the top wall, and the stem insertion cylinder are often formed as separate parts as a stem guide cylinder.
[0008]
A cylinder 11 is suspended from the upper part of the mounting cylinder 1. The cylinder has a suction valve 12 formed of a poppet or the like on the lower inner surface, and a suction pipe is suspended from the lower end.
[0009]
From the inside of the cylinder, an operating member 25 having a cylindrical piston 22 at the lower portion of the stem 21 and having a push-down head 24 with a nozzle 23 fitted at the upper portion of the stem is urged upward to stand. In the illustrated example, the stem is formed by fitting two members of a lower cylinder 21a and an upper cylinder 21b, and a cylindrical piston 22 provided separately on the outer surface of the lower cylinder 21a hanging from below the upper cylinder is slidably fitted. The discharge valve is formed by the cylindrical piston and the valve hole 26 formed in the lower cylinder.
[0010]
In the above configuration, the upward biasing of the normal operating member is performed by a metal spring. In the present invention, the upward biasing is performed by an elastic member formed of an elastomer, and all the other constituent members of the liquid ejector are disposed. Made of synthetic resin material.
[0011]
The elastic member 31 raises the elastic cylinder 33 from the base cylinder 32 fitted to the outer surface of the cylinder part 3 fitted to the outer surface of the cylinder upper end, and bends the upper part of the elastic cylinder downward and inwardly. A fitting short tube 34 is attached to the lower end. The fitting short cylinder 34 is fitted to the upper part of the stem 21 and its upper end surface is engaged with the lower end surface of the stem fitting cylinder 27 depending from the pressing head. As shown in FIG. 2, when the operating member 25 is pushed down via the push-down head 24, the elastic member 31 descends against the elasticity of the bent portion of the elastic cylinder 33, that is, hangs downward from the bent portion. The elastic cylinder portion is provided so as to be long. At this time, a tensile force acts on the upper surface side of the bent portion and a compressive force acts on the lower surface side, and when the release is released, the fitting short cylinder 34 is raised by these forces, and accordingly the operating member 25 is raised. Will be.
[0012]
In the illustrated example, the cylindrical portion 3 standing from the inner periphery of the inward flange of the mounting cylinder 1 is not necessarily required. Therefore, the base cylinder 32 of the elastic member 31 can be directly fitted to the outer surface of the cylinder upper end. Further, the fitting short tube 34 can be fitted into the recess by providing a recess around the outer surface of the lower portion of the stem fitting tube 27, and can also be fitted into the upper portion of the stem.
[0013]
【The invention's effect】
The present invention is configured as described above, and the elastic cylinder 33 is erected from the base cylinder 32 which is fitted directly or indirectly to the outer surface of the cylinder part 3 or the cylinder upper end part standing from the inward flange of the mounting cylinder 1. In addition, the upper portion of the elastic cylinder is bent inward and downward, and an elastic member 31 provided with a fitting short cylinder 34 is provided at the lower end of the bent portion, and the fitting short cylinder is divided into a stem 21 and a stem fitting cylinder 27. By adhering to the upper outer surface of the liquid discharge standing pipe portion 28 to be formed, the elastic member 31 formed of elastomer is used to urge the operating member 25 upward, and all the constituent members of the liquid ejector are made of synthetic resin. Unlike the case where the actuating member biasing member is a metal spring, the spring does not damage the teeth of the crusher during processing after product disposal.
[0014]
In the case of the invention described in claim 2, the effect of the invention described in claim 1 is combined, and the fitting short cylinder 34 is fitted to the upper portion of the stem 21 so that the upper end surface of the fitting short cylinder is connected to the stem fitting cylinder 27. Since it is engaged with the downward stepped portion 27a formed by the lower end surface, there is an effect that the fitting short tube 34 can be easily fixed to the liquid discharge standing tube portion 28.
[Brief description of the drawings]
FIG. 1 is a half sectional view of a liquid ejector according to the present invention.
FIG. 2 is a half cross-sectional view of the main part of FIG.
[Explanation of symbols]
31 ... Elastic member 32 ... Base tube
33 ... Elastic cylinder 34 ... Short fitting cylinder

Claims (2)

The cylinder 11 is suspended from the upper part of the mounting cylinder 1 to be fitted to the outer surface of the container body neck and neck, the cylindrical piston 22 is provided at the lower part of the stem 21 from the inside of the cylinder, and the pressing head with a nozzle is provided at the upper part of the stem. The actuating member 25 fitted with 24 is inserted through the stem insertion cylinder 5 fitted to the inner surface of the upper end of the cylinder and is urged upward to stand up. In the liquid ejector provided so as to be sucked into the cylinder 23 and capable of being ejected from the nozzle 23 through the stem.
The elastic cylinder 33 is erected from the base cylinder 32 fitted directly or indirectly to the outer surface of the cylinder portion 3 or the cylinder upper end portion standing up from the inward flange of the mounting cylinder, and the upper portion of the elastic cylinder is bent downward and inwardly. And provided with an elastic member 31 made of elastomer having a fitting short tube 34 attached to the lower end of the bent portion,
By fixing the fitting short cylinder 34 to the upper outer surface of the liquid discharge rising pipe portion 28 formed by the stem and the stem fitting cylinder hanging from the pressing head, the operating member 25 is operated by the elastic member 31. And a liquid ejector characterized in that all other constituent members are made of a synthetic resin material. The upper end of the stem hangs down from the push-down head, and is fixed to the inner surface of the stem fitting cylinder 27 having a larger outer diameter than the stem. The liquid ejector according to claim 1, wherein the liquid ejector is engaged with a lower end surface of the stem fitting cylinder 27.

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