JPH10120011A - Liquid discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of man-hours required for assembly, a product unit-price, and frequency in failure, by reducing the number of components to five items, which are a pressing head member, piston member, cap member, and coil spring. SOLUTION: A piston member 2 is connected with a fitting cylinder 3a by being fitted in it. Then, a coil spring 5 is inserted into a cylinder 1c integrated with a cap member 1, and a piston 2p is inserted there. Accompanying the insertion, a guide cylinder 1a erected on the top of the cap member 1 fits into a gap made between the body 3a of a pressing head 3 and an intermediate cylinder 3c. When it is pressed further, a slip-out prevention projection 1f formed at the end edge of the guide cylinder 1a and a projection 3i formed at the outside-diameter end edge of the inner cylinder 3c deform or slide, ride over each other, and fit more deeply, so that vertical movement becomes free between the cap member 1 and pressing head 3. Further, a liquid carry pipe 4 is fitted and mounted on a liquid suction cylinder 1d, and a female thread 1s formed in the cap is engaged with the male thread of the mouth of a bottle B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump device for quantitatively discharging liquid foods, shampoos, fragrances, plant liquid fertilizers, and the like.

[0002]

2. Description of the Related Art Various pump devices for discharging a small amount of liquid at a constant rate have been disclosed as liquid ejectors, liquid ejectors, dispensers and the like. The liquid ejector shown in FIG. 6 (Japanese Utility Model Application No. 6-12302) shown as an example has as many as 10 parts from the head to the lowermost liquid absorption pipe. There is a disadvantage that the production process and the assembly process are proportionately complicated and the frequency of failure increases.

To prevent the pump from moving up and down for some reason before reaching the consumer's hand and discharging the liquid in the bottle, Japanese Utility Model Application No. 59-10725 discloses a pump for operating the pump. A device is disclosed in which a cap is placed on a head and the lower edge of the cap is brought into contact with the mouth of the bottle so that the head cannot be depressed (FIG. 7).

[0004]

In the liquid discharge pump device, the fact that the number of parts is large means an increase in the number of assembling steps, value, and failure frequency. SUMMARY OF THE INVENTION It is an object of the present invention to reduce the number of parts extremely and therefore reduce the unit cost of the product by reducing the number of assembly steps.

[0005] Further, in order to assure that the liquid in the bottle does not leak out and that the pump is not operated during the distribution process until it reaches the consumer in the liquid ejector shipped from the production factory. The purpose was to develop the mechanism of the above.

[0006]

The liquid ejector according to the present invention is of a pump type which is used by being attached to the mouth of a bottle. The liquid ejector is a cap having a canopy and is substantially perpendicular to the body. A pressing head member that protrudes a liquid discharge nozzle and has a liquid passage pipe hanging down from the inner diameter side of the body portion and that sequentially communicates with the inner cylinder and the nozzle hole, and a piston member having an unopened discharge valve fitted to the liquid passage pipe And a discharge valve having a liquid-absorbent valve with a small-diameter liquid-absorbing cylinder extending below it and a semi-circular thin plate on the upper surface of the liquid-absorbing cylinder. 5) a cap member integrally formed with a rod, and a coil spring 5 for urging the liquid feed pipe and the piston hanging down into the bottle.
By constructing from points, the number of parts is greatly reduced. These parts are all formed of plastic except for the coil spring.

In the above-mentioned pressing head, an unused guarantee ring provided with a split in the axial direction at the lower end of its body is integrally formed via a thin-walled bridge which is easy to tear off. This prevents the pump from being inadvertently or mischievously operated so as not to descend from the mounting position.

[0008]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a central cross-sectional view of the side surface showing the entire configuration of the liquid ejector 10. A cap member 1 in which a female screw 1s engaged with a male screw of the mouth and neck of the bottle B indicated by a virtual line is engraved on the inner diameter of the body 1b.
f (a plurality of projections may be provided), a guide cylinder 1a projecting upward, a cylinder 1c having an inner diameter smaller than the guide cylinder is formed in a concave shape below the upper surface of the cap member 1, and a lower portion thereof is formed. 1d smaller liquid absorption cylinder
Is extended, and a piercing rod 1e formed by contacting a straight line portion of a semicircular thin plate valve 1v having an arc contacting a part of a peripheral edge of an upper end opening of the liquid suction cylinder 1d closes the remaining opening. It protrudes upward.

As shown in FIG. 1 and FIG. 2, the semicircular thin plate valve 1v is formed so that the side surface of the arc portion is formed in an inclined shape 1e expanding upward, and a concave streak 1u is formed in the base (linear portion). It is formed to be thin, for example. The side surface of the circular arc portion contacts the upper end periphery of the liquid suction cylinder 1d to close the liquid suction cylinder, or turns upward with the thin portion as a fulcrum to open and be adjacent to the valve. A liquid feed pipe 4 is fitted into the liquid suction cylinder 1d from below.

The piston member 2 fitted to the cylinder 1c to perform a pumping operation forms a cylindrical piston 2p whose outer peripheral surface forms a slightly arcuate surface in the axial direction. 2a is integrally protruded upward. A valve cover 2b is formed at the upper end of the liquid passage cylinder 2a, and most of an appropriate shape such as a circle or a trapezoid is formed at the center of the valve cover 2b. A V-notch-shaped groove 2d that is slightly inclined outward is formed by engraving from the lower surface, and a slightly shallow groove 2c is formed in the remainder of this contour. As will be described later, the V notch 2d is broken at the stage of assembling and using the liquid discharger, and a portion surrounded by the V notch becomes the discharge valve 2v. Therefore, the passage through which the liquid passes has not been opened in the valve lid 2b until then.

The press head member 3 fitted and fixed to the liquid passage cylinder 2a has a nozzle 3n protruding from the upper side surface of the body 3a, and the press head member 3 communicates with the inner hole of the nozzle at an angle close to a right angle. The tube 3b is suspended, and the fitting tube 3b and the trunk 3
The intermediate cylinder 3c is suspended between the intermediate cylinder 3a and the intermediate cylinder 3a. This intermediate cylinder 3
On the outer peripheral side of the lower edge of c, a ridge 3r having a slight protrusion amount is provided. Further, a stopper 3e, which is a so-called imperfect ring having a cut 3f at one place, is formed integrally with the lower end surface of the body 3a through a cylindrical or intermittent thin bridge 3d, That cut 3
At one end of f, a tongue piece 3g for gripping is provided.

The liquid ejector 1 of the present invention having the above-mentioned parts configuration.
0 is assembled as follows. First, the piston member 2 is fitted and connected to the fitting cylinder 3a that is hung from the pressing head 3. Next, the coil spring 5 is inserted into the cylinder 1c integrated with the cap member 1, and the piston 2p is inserted therethrough. The cap member 1 is inserted into a gap formed by the body 3a of the pressing head 3 and the intermediate cylinder 3c with the insertion.
When the guide tube 1a erected on the upper surface of the guide tube 1a is fitted and further pressed, the retaining ridge 1f formed on the edge of the guide tube 1a and the ridge 3i formed on the outer diameter edge of the inner tube 3c. It deforms or slides over each other's ridges, fits more deeply, and can freely move up and down between the cap member and the pressing head 3 and thus the piston member 2. It will not fall off easily.

Further, the liquid feed pipe 4 is fitted and mounted on the liquid suction cylinder 1d, and the female screw 1s formed on the cap is screwed to the male screw at the mouth of the bottle B via the packing 6, so that the bottle is connected to the bottle. It is used by being attached. In this process, it is customary that the bottle is filled with liquid.

A feature of the present invention is that a liquid passage has not yet been opened in the valve lid 2b on the upper surface of the liquid passage cylinder 2a at this stage, and is integrally connected to the lower end of the body 3a of the pressing head 3. The pressing head in which the stopper ring 3e hinders does not slide further downward.

A method of using the liquid ejector 10 will be described.
The liquid ejector 10 assembled as described above and mounted on the bottle grasps the gripping tongue piece 3h protruding from one end of the stopper ring 3e connected to the lower part of the body of the pressing head 3, and strongly presses the outer circumferential direction. When pulled, the strip-shaped or cylindrical bridge is torn. This allows the pressing head 3 to move up and down. Next, when the head is pushed down, the tip of the rod-like body 1e protruding into the cylinder 1c comes into contact with the valve cover 2b formed at the upper end of the liquid passage cylinder 2a and is surrounded by the V notch 2d immediately before the lower limit. A contour part such as a round circle is pushed up and the contour due to the V notch is broken. However, the portion of the shallow groove 2c functions as a hinge without being torn. At this stage, for the first time, the inside of the bottle B and the nozzle 3n hole communicate with each other via the valve, and the liquid is discharged by the vertical operation of the pressing head.

[0016]

As described above, the number of parts of the liquid discharger according to the present invention is reduced to five as compared with the conventional product (10 or more), so that the number of assembling steps is reduced and the product unit price is reduced. As it became cheaper, the frequency of failures was greatly reduced.

Further, since the discharge valve is closed until the user uses the liquid discharger, the liquid filled in the bottle does not leak, so that cleanliness can be maintained from the shipping stage to the transportation stage. It became so.

Further, since the stopper ring is connected to the pressing head, an accident that the pressing head is depressed erroneously or unnecessarily during the display as a product and the liquid is discharged is prevented.

[0019]

[Brief description of the drawings]

FIG. 1 is a central sectional view of a liquid ejector according to the present invention.

FIG. 2 is a cross-sectional view of the discharge valve section shown in FIG.

FIG. 3A is a cross-sectional view taken along line AA of FIG. 1;
(B) is a side view showing a cross section of the valve portion.

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a side view of a central cross section showing a state in which a stopper ring is removed, a pressing head is pressed down, and a discharge valve is opened (pierced).

FIG. 6 is a side view showing a conventional example of a liquid ejector, which is a central cross section.

FIG. 7 is a perspective view showing a main part of the liquid ejector provided with a cap for preventing the pressing head from lowering due to mischief.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cap member 2 Piston member 3 Pressing head member 4 Liquid feed pipe 5 Spring 10 Liquid ejector

Claims (2)

[Claims] In a liquid discharger of a pump type used by being attached to a mouth of a bottle, a liquid discharge nozzle is projected substantially perpendicularly from a body of a cap-shaped body having a canopy and an inner diameter side of the body. A pressure head member having a liquid passage pipe hanging down from the inner cylinder and the nozzle hole, a piston member having an unopened discharge valve fitted to the liquid passage pipe, and a cylinder drooping recess through which the piston slides. And a cap member integrally formed with a discharge valve piercing rod having a small-diameter liquid suction cylinder extending below the lower part thereof and a liquid suction valve that becomes a semi-circular thin plate on the upper end surface of the liquid suction cylinder. A liquid ejector characterized by comprising five points of a hanging liquid feed pipe and a coil spring for urging a piston upward. 2. A liquid discharge device of a pump type used by being attached to the mouth of a bottle, wherein a stopper ring having a tear that can be torn in the axial direction is connected to the lower end of the body of the pressing head via a thin bridge. A liquid ejector characterized by being formed.