JPH09323775A - Discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a discharge container with a good discharging performance. SOLUTION: In the discharge container, a piston 5 with an inner hole 8 communicating with a liquid chamber 2 is provided in the mouth of a container main body 1, a cylinder 10 with the inner hole 8 communicating with a discharge opening 18 is mounted in relation to the piston 5 so that it is slidable liquid- tightly. A liquid passage 15a communicating with the discharge opening 18 from the liquid chamber 2 is formed, and a valve 13 is provided in the liquid passage 15a. Also, a springy body 9 is disposed between the piston 5 and the cylinder 10, and the cylinder 10 is slid in relation to the piston 5 by pressing a press part for the cylinder 10 against the springing force of the springy body 9 and releasing it from the state of being pressed, and thus the valve 13 is opened and a liquid in the liquid chamber 2 is discharged to the discharge opening 18. In the case, the valve 13 is composed of a value part and a ring part surrounding the valve part, and the valve part and ring part are connected together with a plurality of connecting parts made of a flexible material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid discharge container such as a cosmetic emulsion, a hand cream, a foundation, a shampoo for hair washing, a rinse, a liquid toothpaste, a mayonnaise, a ketchup, a paste and a paint. Regarding

[0002]

2. Description of the Related Art As an example of a discharge container for discharging the liquid in a liquid storage chamber from a discharge opening portion of a valve, an actual container is disclosed in
No. 34641 is known. In detail, the body portion is composed of a body portion and a head portion, and the body portion is a tubular portion having a fluid body containing portion and an intermediate portion forming an intermediate chamber connecting the fluid body containing portion and the head portion. At least a part of the wall of the intermediate portion forms a repetitive deformation portion made of an elastic material, and the repetitive deformation portion is elastically deformed when an external force is applied to the inner volume of the intermediate chamber. The internal volume of the intermediate chamber can be restored by the elastic restoring force of the wall itself except the external force, and the fluid container can change its internal volume in a sealed state. A container having a mechanism, a check valve provided between the head portion and the intermediate chamber, and a fluid outlet nozzle provided in the head portion. Further, in any of the embodiments, the valve portion, which is the opening / closing portion of the check valve, is connected to the base portion at one connecting portion.

[0003]

However, although the above-mentioned prior art was suitable for using a liquid having a relatively high viscosity, the use of a low-viscosity liquid has some problems. there were. That is, if there is only one connecting portion that connects the valve portion and the base portion, the restoring force of the valve portion is weak and therefore the degree of sealing is also weak. Therefore, when the container is turned upside down, there is a risk that the liquid having a low viscosity may flow out from the check valve (valve portion).

Further, since the restoring force of the valve portion is weak, the restoring speed of the valve portion is slow, and therefore the liquid once discharged (discharged) may flow back into the container through the check valve (valve portion). There was also a nature.

[0005]

The present invention has been made to solve the above-mentioned problems, and has an inner hole communicating with the liquid chamber at the mouth of the container body having the liquid chamber therein. A piston is provided and a cylinder having an inner hole communicating with the discharge port is attached to the piston so as to be liquid-tightly slidable, thereby forming a liquid passage communicating from the liquid chamber to the discharge port. An openable / closable valve is provided in the liquid passage for communicating / blocking the liquid passage, and an elastic member for urging the cylinder away from the piston is provided between the piston and the cylinder. By disposing a repellent body and pressing / releasing the pressing portion against the cylinder against the elastic force of the repellent body, the cylinder is slid against the piston and the valve is opened. To discharge the liquid in the liquid chamber In a discharge container configured to discharge, the valve includes a valve portion and a ring portion surrounding the valve portion, and the valve portion and the ring portion are connected by a connecting portion made of a plurality of flexible materials. That is the summary.

[0006]

With the flexible connecting portion, the connecting portion expands and contracts, the valve portion is easily opened and the liquid passage is communicated, and when returning, the valve portion is surely returned and the liquid passage is shielded.

[0007]

DETAILED DESCRIPTION An example will be described with reference to the accompanying drawings. The container main body 1 contains a soft bag 3 forming a liquid chamber (liquid storage chamber) 2 inside. Although the interior of the container body 1 may be directly used as the liquid chamber 2, the use of the soft bag body 3 is an easy means since it shrinks in accordance with consumption of the contained liquid and can prevent the intrusion of outside air. The soft bag 3 is attached to the lower peripheral wall of the mouth member 4 attached to the opening of the container body 1 by a heat seal or the like so as not to leak liquid. Mouth member 4
Has a piston 5 inside. Illustrated piston 5
Has a separate piston body 6 fixed thereto in order to exhibit a suitable elasticity and to secure a large diameter, but may be an integrally molded product. In addition, piston 5
Is provided with a first valve 7 which can be opened upward in the drawing. The valve 7 serves as an outlet for the liquid from an inner hole 8 communicating with the liquid chamber 2.

A cylinder 10 urged upward by a resilient body 9 is attached to the piston 5 so as to be slidable in a liquid-tight manner. An elastic annular portion 11 provided solely on the outer peripheral wall of the piston body 6 serves as a hermetically sliding contact portion with the inner peripheral wall of the inner hole 12 of the cylinder 10. Also, the cylinder
The second valve 10 can be opened upward in the drawing like the first valve 7.
Valve 13 is attached. This second valve 13
It serves as an outlet for the liquid flowing out from the valve 7 to the inner hole 12.

A nozzle body 1 is provided above the cylinder 10.
4 is attached. The illustrated nozzle body 14 has a second
Nozzle member 15 having a flow passage for liquid coming out of the valve 13, a crown 16 formed separately or integrally with the nozzle member 15, and a liquid flow passage 15 of the nozzle member 15.
It is composed of a thin plate member 17 fixed in the middle of a. Here, the thin plate-shaped member 17 is always provided with the liquid flow passage 15
It is a state in which a is shielded and is fixed at the rear part. That is, during use, the thin plate member 17 is elastically deformed, and the vicinity of the tip of the liquid flow passage 15a becomes the discharge port portion 17a. A clearance space 16a for elastically deforming the thin plate member 17 is formed on the lower surface of the crown 16. The thin plate member 17 is located as close as possible to the ejection port 18 at the end of the liquid flow passage of the nozzle member 15, but is arranged so as not to be exposed from the ejection port 18. This is because the variation due to the molding of the thin plate member 17 is taken into consideration, and the tip of the thin plate member 17 (the exposed portion from the discharge port) is prevented from touching with a finger or the like.

Next, the first valve 7 (the same applies to the second valve 13) will be described in detail. The material for the first valve 7 is polyethylene, silicone rubber, NBR, SBR, butyl rubber, elastomer, which is highly flexible and stable over time.
Etc. are preferable, but can be appropriately selected depending on the type of liquid used. In addition, the first valve 7 has a ring-shaped base 19
And a valve portion 20 having an outer diameter smaller than that of the base portion 19, and three connecting portions 21 that connect the valve portion 20 and the base portion and are arranged at equal intervals. Incidentally, the valve portion 2
Reference numeral 0 denotes a bottomed cylindrical body having a conical edge portion 20a formed therein, and the upper end surface of the edge portion 20a and the base portion 19 are connected by a connecting portion. The first valve 7 having such a structure is fixed by fitting the ring-shaped base portion 19 into the circumferential fixing groove 5a of the piston 5, and
The outer peripheral surface of the valve portion 20 and the edge portion 20a is the discharge port 8 of the piston 5.
The valve action is closed by elastically contacting the inner peripheral wall (valve seat portion) 5b.

Next, as a specific example of the thin plate member,
Metal materials such as stainless steel, carbon steel, and alloys thereof (phosphor bronze), those surfaces coated with resin such as polyamide, vinyl chloride, polyethylene, polyurethane, or POM or ABS , P
Resin molded articles such as P, PET, and PE may be mentioned. still,
When the thin plate member is made of a metal material, adhesion (sealing property) and corrosion resistance can be improved by coating the metal material with a resin.

Next, an example of use will be described. Cap 16
When is pressed, the cylinder 10 slides downward in the drawing against the elastic force of the elastic body 9, and the valve portion 20 and the edge portion 20a of the second valve 13 form the flexible connecting portion 21. While extending, it separates from the valve seat portion 10b and opens the second valve 13 (see FIG. 5). Then, by the opening operation of the second valve 13, the liquid flows out from the inner hole 12 of the cylinder 10 into the liquid flow passage of the nozzle member 15, and the thin plate member 17 is deformed by the pressure of the liquid and the discharge port portion. The liquid flow passage is formed by expanding 17a, and eventually the liquid is discharged from the discharge port 18 formed in the nozzle body 16. When the discharge of the liquid is completed and the pressures of the liquid flow passage 15a and the inner hole 12 become equal, the thin plate member 17 returns to block the liquid flow passage again, and the second valve 13 is flexible. Sex connection 21
Of the valve seat 20 and the edge 20a by the contraction action of the valve seat 1
It is closed by elastic contact with 0b.

When the pressure on the crown 16 is released, the cylinder 10 slides (returns) upward in the drawing due to the elastic force of the elastic body 9, and the valve portion 20 of the first valve 7 is open. The flexible connecting portion 21 is extended and separated from the valve seat portion 5b to open the first valve 7. The opening operation of the first valve 7 causes the liquid to flow out from the inner hole 8 of the piston 5 to the inner hole 12 of the cylinder 10 to prepare for the next use. And
After this preparatory action is completed, the inner hole 12 and the liquid chamber (liquid storage chamber)
When the pressure becomes equal to that of the second valve 7, the first valve 7 is closed by elastically contacting the valve portion 20 with the valve seat portion 5b due to the contracting action of the flexible connecting portion 21.

Next, various modifications of the first valve 7 (second valve 13) will be shown. 6 and 7 show the first example,
The edge portion 20a of the valve portion 20 is formed long and the connecting portion 2
1 is also an example formed long. By increasing the length of the connecting portion 21, the opening amount of the valve is increased, so that the resistance when the liquid passes through the valve is reduced, and the liquid can be discharged with a light pressing force. FIGS. 8 and 9 show a second modification example, in which both ends of the connecting portion 21, specifically, the joint between the ring-shaped base portion 19 and the connecting portion 21, and the edge portion 20a and the connecting portion 21 are connected. This is an example in which the thin portion 21a is formed at the joint. This is an example in which the flexible connecting portion 21 is more easily deformed.

Further, FIGS. 10, 11 and 12,
FIG. 13 shows third and fourth modified examples, in which the connecting portion 21 is circumferentially formed long. Specifically, in the third example, the base 19 and the edge 20a are viewed from above (see FIG. 10).
(See FIG. 12) In the fourth example, the base portion 19 and the edge portion 20a are connected by the crank-shaped connecting portion 21 when viewed from above (see FIG. 12). is there. In any of the modified examples, the opening amount of the valve is increased by increasing the length of the connecting portion, and the pressing force for ejecting the liquid is reduced.

FIGS. 14 and 15 show a fifth modified example, in which the valve portion 20 of the first valve 7 (second valve 13) has a hemispherical shape. The valve seat portion 5b (10b) is also a hemispherical shape in accordance with the change in the shape of the valve portion 20. In the closed state of the valve, the contact area between the valve portion 20 and the valve seat portion 5b increases and the hermeticity is further improved. 16 and 17 show a sixth modified example, which is an example in which the valve section 20 is in line contact with the valve seat section. A circumferential projection 5c (10c) is formed on a portion of the valve portion 20 that serves as a valve seat portion. on the other hand,
The edge portion 20a is a parallel cylindrical portion and is connected to the base portion 19 by a connecting portion 21. 18 and 19 show a seventh modified example, which is an improvement of the edge portion 20a of the sixth modified example. Specifically, only the edge portion 20a located at the connecting portion 21 is left, and the other edge portion 20a is cut off. The connecting portion 21 is substantially extended, and the pressing force for discharging the liquid is reduced.

[0017]

According to the discharge container of the present invention, a piston having an inner hole communicating with the liquid chamber is provided at the mouth of the container body having the liquid chamber inside, and a cylinder having the inner hole communicating with the discharge port. Is attached to the piston so as to be slidable in a liquid-tight manner, thereby forming a liquid passage communicating from the liquid chamber to the discharge port, provided that the liquid passage communicates with and shields the liquid passage. A valve that can be opened and closed is provided, and an elastic body for urging the cylinder away from the piston is arranged between the piston and the cylinder. By pressing / releasing the pressing portion against the cylinder, the cylinder is slid with respect to the piston, the valve is opened, and the liquid in the liquid chamber is discharged to the discharge port. In the discharge container, With more configuration and a ring portion surrounding the valve portion, so coupled with the valve part and the connecting part and a ring portion comprising a plurality of flexible material, the high viscosity liquid,
Alternatively, it is possible to provide a discharge container having good discharge operability regardless of a low-viscosity liquid.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view of a main part of FIG.

3 is a top view of the valve of FIG.

FIG. 4 is a sectional view of FIG. 3;

5 is an enlarged vertical sectional view of an essential part for explaining the operation of the valve of FIG.

FIG. 6 is a top view showing a first modified example.

FIG. 7 is a sectional view of FIG. 6;

FIG. 8 is a top view showing a second modified example.

FIG. 9 is a sectional view of FIG. 8;

FIG. 10 is a top view showing a third modified example.

11 is a sectional view of FIG.

FIG. 12 is a top view showing a fourth modified example.

FIG. 13 is a sectional view of FIG. 12;

FIG. 14 is an enlarged vertical sectional view of an essential part showing a fifth modification.

FIG. 15 is a top view of the valve of FIG.

FIG. 16 is an enlarged vertical sectional view of a main part showing a sixth modification.

FIG. 17 is a top view of the valve of FIG.

FIG. 18 is a top view showing a seventh modified example.

FIG. 19 is a sectional view of FIG.

[Explanation of symbols]

 1 Container Main Body 2 Liquid Chamber (Liquid Reservoir) 3 Soft Bag 4 Port Member 5 Piston 5a Circumferential Fixing Groove 5b Inner Circumferential Wall (Valve Seat) 5c Circumferential Protrusion 6 Piston Body 7 Valve 8 Inner Hole 9 Repellent Body DESCRIPTION OF SYMBOLS 10 Cylinder-10a Circumferential fixing groove 10b Inner peripheral wall (valve seat part) 10c Circumferential protrusion 11 Elastic annular part 12 Inner hole 13 Valve 14 Nozzle body 15 Nozzle member 15a Liquid flow passage 16 Head crown 16a Escape space part 17 Thin plate member 17a Discharge port part 18 Discharge port 19 Ring-shaped base part 20 Valve part 21 Connection part

Claims (1)

[Claims] 1. A piston having an inner hole communicating with the liquid chamber is provided at an opening of a container body having a liquid chamber inside, and a cylinder having an inner hole communicating with the discharge port is provided with respect to the piston. Liquid-tightly mounted so that it can be slid
A liquid passage communicating from the liquid chamber to the discharge port is formed. However, an openable and closable valve for communicating and blocking the liquid passage is provided in the liquid passage, and the piston and the cylinder are connected to each other. An elastic repellent body for urging the cylinder in a direction away from the piston is disposed between the two, and by pressing and releasing the pressing portion against the cylinder against the elastic force of the elastic repellent body, In a discharge container in which the cylinder is slid with respect to the piston, the valve is opened, and the liquid in the liquid chamber is discharged to a discharge port, the valve is a valve portion and a ring surrounding the valve portion. And a valve part and a ring part are connected by a connecting part made of a plurality of flexible materials.