JP2002173166A - Liquid injection pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid injection pump having a simple structure in which a stem 5 is projected out of the upper end of an installed cap 4 fitted to a port neck segment 3 of a container in such a way that it can be moved up and down under its upward urging state, an injection head 7 having a nozzle 6 at the upper end of the stem is fitted to and fixed to it and sound can be generated automatically at the time of liquid injecting operation. SOLUTION: An annular cylinder A is arranged on an installed cap and there is provided an annular piston B having its upper segment fixed to an injection head 7 in such a way that it can be integrally moved. A top plate of the piston is provided with a whistle C of which one end is opened and communicated with an external side and the other end is opened into the annular piston B, there is provided a whistle C for generating sound through passing of air when the injection head is moved up and down.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a liquid ejection pump.

[0002]

2. Description of the Related Art As a liquid ejection pump, a mounting cap is fitted to the mouth and neck of a container body to be removably mounted on the container body, and a stem is projected from the upper end of the mounting cap so as to be able to move up and down while being urged upward. In addition, there is a known one in which a jetting head with a nozzle is attached and fixed to the upper end of a stem.

[0003] These are configured so that the liquid in the mounted container is ejected from the nozzle to the outside by the action of a built-in pump mechanism by the vertical movement of the ejection head.

[0004]

These liquid ejection pumps have conventionally been considered in terms of the function of liquid ejection. However, if the liquid ejection pump is provided so that the container emits an unusual tone during the liquid ejection operation. It is possible to soften or entertain the user. In addition, this can help differentiate products in a situation where there are many similar products.

The present invention has been made in view of such circumstances, and proposes an excellent liquid ejection pump which can automatically emit a sound during a liquid ejection operation and has a simple structure.

[0006]

According to a first aspect of the present invention, there is provided a liquid jet pump according to the present invention, in which a mounting cap is fitted to a mouth and neck portion of a container to be detachably mounted on the container. At the same time, in the liquid ejection pump in which the stem 5 is protruded from the upper end of the mounting cap 4 so as to be able to be pushed downward in an upwardly biased state, and the ejection head 7 with the nozzle 6 is fitted and fixed to the upper end of the stem. An annular cylinder A having an inner peripheral wall 14 and an outer peripheral wall 15 erected upward from both side edges of an annular bottom wall 13 while being provided on the mounting cap 4 so as to be slidable over the outer peripheral surface of the cylinder inner peripheral wall 14. An annular top plate 18 extends outward from the upper end edge of the inner cylinder portion 17 fitted with the inner peripheral lower portion, and an outer cylindrical portion 19 vertically suspended from the outer peripheral edge of the top plate extends to the inner peripheral surface of the cylinder outer peripheral wall 15. Slidably fitted to the upper part, and An annular piston B whose upper part is integrally movable with the ejection head 7, and a top plate 18 of the piston.
And a whistle C that opens at one end to communicate with the outside, opens at the other end into the annular piston B, and emits a sound by the passage of air. .

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

In the liquid jet pump 1 of the present invention, the mounting cap 4 is fitted to the mouth and neck portion 3 of the container body 2 to be removably mounted on the container body, and the stem 5 is capable of being pushed downward from the upper end in a state of being urged upward from the upper end. And a jet head 7 with a nozzle 6 is fitted and fixed to the upper end of the stem.

In the illustrated example, an upper end of a pipe 9 is fitted to a lower end of a cylinder 8 which hangs down in the container body 2, and a stem 5 is projected upward and downward from the upper end surface of the mounting cap 4 so as to be able to move up and down. The ejection head 7 is fitted and fixed to the upper end. The jet head 7 has a vertical tube 10 fitted and fixed to the upper end of the stem 5 suspended from the center of the lower surface of the top wall 11, a peripheral wall 12 suspended from the peripheral edge of the top wall 11, and A nozzle 6 having a base end communicated therewith penetrates the peripheral wall 12 and protrudes forward.
Then, the liquid in the container body 2 is sucked up from the pipe 9 by the action of the built-in pump mechanism by the vertical movement of the ejection head 7 and is ejected from the nozzle 6.

According to the present invention, this kind of liquid ejection pump includes an annular cylinder A, an annular piston B, and a whistle C.

The annular cylinder A is provided on the mounting cap 4 so as to surround the periphery of the stem 5, and has an inner peripheral wall 14 and an outer peripheral wall 15 erected upward from both side edges of an annular bottom wall 13. The outer peripheral surface of the outer peripheral wall 15 is fitted and fixed to the inner peripheral surface of the locking wall 16 erected from the upper peripheral edge of the mounting cap 4.

The annular piston B has an annular top plate 18 extending upward from an upper end edge of an inner cylindrical portion 17 having an inner peripheral lower portion slidably fitted to an upper portion of an outer peripheral surface of the cylinder inner peripheral wall 14 and an outer peripheral portion of the top plate. A lower portion of the outer cylindrical portion 19, which is suspended from the peripheral edge, is slidably fitted to an upper portion of the inner peripheral surface of the cylinder outer peripheral wall 15, and the upper portion is fixed to the ejection head 7 so as to be integrally movable.

In the illustrated example, the lower portion of the inner cylindrical portion 17 is expanded and inclined downward, and the lower portion of the outer cylindrical portion 19 is expanded outward. It is fitted as possible.

Further, the outer surface of the outer peripheral wall 15 is
A concave / convex engaging means a formed by engaging a ridge and a concave groove between the head peripheral wall 12 and the outer peripheral wall 15; Are prevented from rotating with each other. The whistle C has one end opened to the top plate 18 of the annular piston B to communicate with the outside, the other end opened to the inside of the annular piston B, and emits a sound by the passage of air. When the air in the annular cylinder A, which has been pressed down and compressed, is discharged to the outside via the whistle C, or when the ejected head 7 which has been pushed down rises, the whistle C is introduced into the annular cylinder A which has been reduced in pressure. When the outside air is introduced, it makes a sound.

The whistle C in this embodiment is an annular piston B
It has a cylindrical outer cylinder 20 fitted inside, and has an air passage b opened at one end to one end face of the outer cylinder 20 and the other end opened perpendicular to the longitudinal direction in the outer cylinder. The opening in the outer cylinder 20 is covered by a reed valve 21 that can vibrate with a small gap d in the peripheral portion.

More specifically, as shown in FIG. 2, a circular window hole 22 is formed at a predetermined position of the top plate 18 of the annular piston B, and a concave portion 23 is formed continuously around the upper end opening of the window hole 22. The outside 20 is inserted and fitted into the upper part of the annular piston B through the window hole 22,
A flange 24 protruding from the upper end edge of the outer cylinder 20 is fitted and mounted in the recess 23. Further, while providing a closing plate 25 for closing the upper end opening of the outer cylinder 20 in half, and extending below the center edge of the closing plate 25, a partition 26 for dividing the upper part of the outer cylinder 20 into two is extended, and the closing plate 25 is A second partition 27 having a semi-cylindrical shape and a lower end surface curved down and closed at the lower portion of the partition 26 is provided on the inner periphery of the outer cylinder 20 of the non-existent portion, and the partition 26 and the second partition 27 form an air passage b, Also,
The upper part of the reed valve 21 is sandwiched between the partition 26 and the upper part of the second partition 27, and the opening part opened horizontally below the partition 26 by the lower part of the reed valve 21 can be vibrated with a small gap d. It is coated. Then, a configuration is such that a sound is generated when air flows upward from below the outer cylinder 20.

The reed valve 21 can be made of synthetic resin, paper, metal, or a composite thereof, and can produce various levels and tones by selecting the material and adjusting the width of the small gap d. it can.

The whistle C is not limited to that of the above embodiment,
Various specific structures can be adopted as long as the sound is generated by the passage of air. In the above-described embodiment, the whistle C emits a sound when the ejection head 7 is pushed down. On the contrary, the whistle C emits a sound when the pushed ejection head 7 goes up. good. However, in the former case, since a sound is emitted more quickly with the ejection of the liquid than in the latter case, there is an advantage that the identification by hearing can be performed more effectively.

When the liquid jet pump 1 is used, for example, when the jet head 7 is pushed down from the state shown in FIG. 1, the liquid is jetted from the nozzle 6 by the action of the built-in pump mechanism. At this time, the air in the annular cylinder A is discharged to the outside via the whistle C, and emits a sound. Then, when the ejection head 7 is released from being pressed, the ejection head 7 is raised by the upward urging force, and the annular piston B is also raised to return to the original state. Incidentally, reference numeral 28 in the drawing denotes a locking rib.

[0020]

As described above, the liquid ejector according to the present invention has the above-described structure, and automatically emits a sound when the liquid is ejected. It has the effect of relaxing or entertaining. In addition, by emitting sound, a unique presence is generated in many commodities, which is useful for so-called differentiation.

Moreover, since the conventional pump of this type can be formed simply by mounting an annular cylinder and an annular piston with a whistle, the pump can be manufactured easily and at low cost. Since it is present between the ejection head and the mounting cap, there is an advantage that providing such components does not cause any inconvenience that hinders the ejection operation.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view showing one embodiment of the present invention.

FIG. 2 is an enlarged vertical sectional view showing a main part of the whistle of the embodiment.

FIG. 3 is a plan view showing an annular piston and a whistle of the embodiment.

FIG. 4 is a partially cutaway side view of the ejection head of the embodiment in a pressed down state.

[Explanation of symbols]

2 ... container body, 3 ... mouth and neck, 4 ... mounting cap, 5 ... stem, 6 ... nozzle, 7 ... ejection head, 13 ... bottom wall, 14 ... inner peripheral wall, 15 ... outer peripheral wall, 17 ... inner cylinder part, 19 ... outer cylinder part, A ... annular cylinder, B ... annular piston, C ... whistle

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Kazuhito Kuwahara, Inventor Kazuhito Kuwahara, 3-2-6 Yoshino Kogyo Co., Ltd. (72) Inventor Shigeo Iizuka 3-2-6 Oshima, Koshima-ku, Tokyo Nokono F-term (reference) 3E084 AA04 AA12 AA24 AB01 BA02 CA01 CC03 DA01 DB12 DC03 FA09 FB01 GA04 GB11 JA09 LB02 LB07 LC01 LD22 LD25

Claims (1)

[Claims] 1. A mounting cap 4 is fitted to the mouth and neck portion 3 of a container body 2 to be removably mounted on the container body, and a stem 5 is protruded from an upper end of the mounting cap 4 so as to be able to be pushed down in an upwardly biased state. In a liquid ejection pump in which an ejection head 7 with a nozzle 6 is fitted and fixed to the upper end of a stem, the ejection head is provided on the mounting cap 4 so as to surround the periphery of the stem 5 and to be above each side edge of the annular bottom wall 13. An annular cylinder A having an inner peripheral wall 14 and an outer peripheral wall 15 erected; Along with extending, the outer cylindrical portion 19 lower than the outer peripheral edge of the top plate outer peripheral edge is slidably fitted to the inner peripheral surface upper portion of the cylinder outer peripheral wall 15, and
An annular piston B having an upper part fixed to the ejection head 7 so as to be able to move integrally with the piston, a top plate 18 of the piston having one end opened to communicate with the outside, and the other end opened into the annular piston B;
And a whistle C which emits a sound when air passes therethrough.