JP3359989B2 - Spouting vessel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spouting container having a pump attached to the mouth of a container main body, such as for cosmetics, insecticide, and sterilization. Specifically, by pressing down the push button,
The ejection pipe and the piston are pushed into the cylinder chamber against the urging member, and the pressure in the cylinder chamber is increased to move the piston with respect to the ejection pipe. The present invention relates to a pressure-accumulation structure type ejection vessel for ejecting an object vigorously to the outside through the ejection pipe.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 5, for example, as shown in FIG.
A check valve 3 is provided at the inlet to the inside, a biasing member 6 is housed in the cylinder chamber 2, and the ejection pipe 4 and the piston 5 are provided so as to be reciprocally slidable. There is a configuration in which the valve portion 5a of the piston 5 is pressed with the plug closed, and the push button 7 is attached to the upper end of the ejection pipe 4.

In use, the ejection pipe 4 and the piston 5 are pushed into the cylinder chamber 2 against the urging member 6 by putting a hand on the push button 7 and depressing the same, and the pressure in the cylinder chamber 2 is reduced. Due to the rise, the pressing of the valve portion 5a is released, and the contents in the cylinder chamber 2 are sent out into the pipe 4a, and the nozzle 7 of the push button 7 is passed through the pipe 4a.
a.

On the other hand, when the hand is released from the push button 7,
The ejection pipe 4 and the piston 5 are pushed up by the urging force of the urging member 6 to return the push button 7 and to release the cylinder chamber 2
The inside of the container was made negative pressure, the check valve 3 was opened, and the contents in the container body 1 were sucked into the cylinder chamber 2.

[0005]

By the way, it is required to reduce the number of parts of such a jet container from the viewpoint of resource protection and the like. However, in the conventional ejection container, since the check valve 3 is provided at the entrance from the inside of the container body 1 to the inside of the cylinder chamber 2, there is a problem that the number of parts increases and the cost increases.

SUMMARY OF THE INVENTION It is an object of the present invention to reduce the number of parts and cost in a pressure accumulating structure type ejection container.

[0007]

For this purpose, the invention as defined in claim 1 is, for example, as shown in the following illustrated embodiments.
By pushing down the push button 23, the ejection pipe 20 and the piston 19 are pushed into the cylinder 12 against an urging member such as the coil spring 18, and the pressure in the cylinder 12 increases, so that the ejection pipe 20 is moved with respect to the ejection pipe 20. Piston 1
9, the contents in the cylinder 12 are sent out into the ejection pipe 20 with a gap therebetween, and are ejected from the nozzle 23a of the push button 23 through the pipe line 20a. By releasing the hand from 23, the ejection pipe 20 and the piston 19 are pushed up by the urging member, and the push button 23 is returned,
In the ejection container which makes the inside of the cylinder 12 a negative pressure and sucks the contents in the container body 10 into the cylinder 12,
When the piston 19 is pushed into the cylinder 12, the piston 19 is pressed against the inner peripheral surface of the cylinder chamber 15 to seal the gap therebetween.
And the first cylinder chamber 1
3 and the hand is released from the push button 23.
When the piston 19 returns to the uppermost position,
Elastic valve portion 19a forming a gap between cylinder 12
The while provided on the outer periphery of the piston 19, the throttle portion 12g provided from the container body 10 within the entrance to the second cylinder chamber 14, formed by providing the cylinder 12, it is characterized.

[0008]

In use, when the user pushes down the push button 23 with his / her hand and pushes the ejection pipe 20 and the piston 19 into the cylinder 12, the elastic valve portion 19a is pressed against the inner peripheral surface of the cylinder chamber 15 and the pressure is reduced. And the cylinder chamber 15
Is divided into a first cylinder chamber 13 and a second cylinder chamber 14, and the pressure in the first cylinder chamber 13 is increased, and the piston 19 moves with respect to the ejection pipe 20 due to the increase in the pressure. Create a gap between the first cylinder chamber 1
3 is sent out to the pipe 20a of the jet pipe 20, and the nozzle 23a of the push button 23 is passed through the pipe 20a.
Erupts from

After the ejection, when the hand is released from the push button 23,
The ejection pipe 20 and the piston 19 are pushed up by the urging force of the urging member. At this time, the inside of the first cylinder chamber 13 and the inside of the second cylinder chamber 14 are made to have a negative pressure, and the contents in the container body 10 are sucked into the second cylinder chamber 14 through the narrowing portion 12g. When returning to the position, the contents in the second cylinder chamber 14 are sucked into the first cylinder chamber 13 through the gap 21 and
The contents in the container body 10 are squeezed into the cylinder chamber
Inhale through 2g.

After the suction, the cylinder chamber 15
That the contents in the container return to the inside of the container body 10
Regulate with.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a vertical sectional view of a main part when not in use, which is a cosmetic squirt container according to one embodiment of the present invention.

Reference numeral 10 in the figure denotes a container body. The container body 10 is made of plastic and has a bottle shape.
A cosmetic liquid as a content is stored inside. The pump P is attached to the mouth 10a of the container body 10.

The pump P has a screw cap 11.
The screw cap 11 has a slightly short cylindrical shape and opens downward in the drawing, a female screw is provided on the inner periphery, a center hole 11b is provided at the center of the top 11a, and a short cylinder is provided below the top 11a around the center hole 11b. The portion 11c and the enlarged tube portion 11d having a larger diameter than the short tube portion 11c are formed integrally and concentrically on the top portion 11a. The flange 12a of the cylinder 12 is fitted on the inner surface of the top 11a of the screw cap 11, while the short cylinder portion 11c is fitted in the cylinder 12.
Press-fit.

The cylinder 12 has a ventilation hole 12b penetrating radially in the upper outer periphery and two stepped portions 12c and 12d in the middle to reduce the diameter sequentially, and a cylinder chamber 15 is provided inside. On the inner peripheral surface of the lower part of the cylinder chamber 15, an enlarged diameter concave portion 12e is provided near the step portion 12c.
Further, the cylinder 12 is provided with a slightly larger diameter enlarged portion 12f upward from the inner periphery of the step portion 12c. Further, the cylinder 12 has an inlet 12 into the cylinder chamber 15.
h is provided with a squeezed portion 12g.

The upper end of the suction pipe 13 is attached to the lower end of the cylinder 12, and the inside of the pipe and the inlet 12h are connected.
Communicate with the inside.

Thus, a coil spring 18 as an urging member is housed in the cylinder chamber 15, and a piston 19 is housed on the coil spring 18.

The piston 19 has a slightly small diameter shaft shape, is provided with an elastic valve portion 19a which is opened slightly outward on the outer periphery of the lower end, and a concave groove 19b is provided on the upper outer periphery in the axial direction. A portion 19c is provided.

In the cylinder chamber 15, an ejection pipe 20 is provided.
Part of it.

The jet pipe 20 is formed in a slightly elongated tubular shape, provided with an enlarged diameter portion 20b at a lower portion, and provided with enlarged diameter seal portions 20c and 20d at upper and lower ends thereof, respectively.
Projections 20e are provided on both sides in the radial direction of the inner periphery of the lower end of Oa.

The projecting portion 20e of the jet pipe 20 is engaged with the concave groove 19b of the piston 19 shallowly so that the pipe 20a
The upper part of the piston 19 is inserted into the inside, and the piston 19 and the ejection pipe 20 are provided so as to be mutually movable,
The enlarged diameter seal portion 20c of the ejection pipe 20 is connected to the one cylinder chamber 1
5 is slidably provided by pressing against the inner peripheral surface. Then, the coil spring 18 is slightly compressed and provided via the piston 19, the piston 19 is pushed up by the urging force of the coil spring 18, and the valve portion 19c is pressed to close the pipe line 20a. 20 is pushed up, and the upper end of the enlarged diameter seal portion 20c is pressed against the lower end of the short cylindrical portion 11c. When the piston 19 is at the uppermost position, the outer peripheral surface of the elastic valve portion 19a and the expanded portion 12
The gap 21 is formed between the inner peripheral surface f and the inner peripheral surface.

On the other hand, the center hole 11 of the screw cap 11
b, the upper part of the jet pipe 20 is projected outside, and a push button 23 is attached to the upper end thereof.

The push button 23 has a passage (not shown) therein, and is provided so that one of the passages communicates with the conduit 20a of the ejection pipe 20 and the other communicates with the nozzle 23a.

When the push button 23 is depressed in the direction of arrow A in FIG. 1 during use, the ejection pipe 20 and the piston 19 are pushed into the cylinder chamber 15 against the coil spring 18, and as shown in FIG. The elastic valve portion 19a is pressed against the inner peripheral surface of the cylinder chamber 15 to seal the space therebetween, and the cylinder chamber 15 is divided into the first cylinder chamber 13 and the second cylinder chamber 1.
4 and the pressure in the first cylinder chamber 13 is increased.

As the pressure in the first cylinder chamber 13 increases, as shown in FIG. 3, the piston 19 further slides on the inner peripheral surface of the cylinder chamber 15 downward in FIG. The pressing is released, and the pipe line 20a and the inside of the first cylinder chamber 13 are communicated. Then, the cosmetic liquid in the first cylinder chamber 13 is sent to the conduit 20a, and is spouted from the nozzle 20a to the outside through the passage in the push button 23 from the conduit 20a.

When the pressure in the first cylinder chamber 13 is weakened, the valve portion 19c is pressed again by the coil spring 18 to close the pipe 20a and stop the ejection from the nozzle 23a.

At the final stage of pressing down the push button 23, as shown in FIG. 4, when the elastic valve portion 19a enters the enlarged-diameter concave portion 12e, the first valve extends through the enlarged-diameter concave portion 12e.
The cylinder chamber 13 communicates with the second cylinder chamber 14. Then, the pressure and the cosmetic liquid remaining in the first cylinder chamber 13 are put into the enlarged diameter concave portion 12e and released into the second cylinder chamber 14.

After the ejection, when the hand is released from the push button 23 to release the push, the coil spring 18 releases the piston 1.
9 and spout tube 20 are pushed up together. At this time, the elastic valve portion 19a is pressed against the inner peripheral surface of the cylinder chamber 15 to interrupt the communication between the first cylinder chamber 13 and the second cylinder chamber 14 again. Then, it returns to the state shown in FIG.

At this time, the interior of the first cylinder chamber 13 and the interior of the second cylinder chamber 14 are made to have a negative pressure, and the cosmetic liquid in the container body 10 passes through the interior of the suction pipe 13 and the narrowing portion 12g, and the interior of the second cylinder chamber 14 Suck up. And the elastic valve portion 1
When 9a returns to the uppermost position, the cosmetic liquid in the second cylinder chamber 14 is sucked into the first cylinder chamber 13 through the gap 21 and the cosmetic liquid in the container body 10 is sucked into the second cylinder chamber 14. .

When the cosmetic liquid in the cylinder chamber 15 returns to the interior of the container main body 10 when not in use, the restriction portion 1
Regulate at 2g.

When returning to the state shown in FIG. 1 after the ejection, outside air is drawn into the container body 10 through the center hole 11b and the vent hole 12b to prevent the container body 10 from being negatively pressurized.

[0031]

As described above, according to the present invention, the pressing
An elastic valve provided on the outer periphery of the piston when the lower button is pressed down
Section separates the cylinder chamber to increase the pressure in the first cylinder chamber.
To eject the contents from the nozzle of the push button,
When you release your hand from the
It is pushed up by the force to make the cylinder chamber negative pressure,
Suction the contents of the container body into the chamber
When the piston returns to the top position, the cylinder and elastic valve
Through the gap between the second cylinder chamber
One suction is drawn into the cylinder chamber, and after the suction, the return of the contents in the cylinder chamber to the inside of the container body is regulated by the throttle portion. Therefore, a check valve is separately provided at the inlet from the inside of the container body to the cylinder chamber as in the related art. Therefore, the number of parts can be omitted and the cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view of a main part of an ejection container according to an embodiment of the present invention when not in use.

FIG. 2 is a longitudinal sectional view of a main part showing a state in which a press button is depressed during use, and a cylinder chamber is divided into a first cylinder chamber and a second cylinder chamber by an elastic valve portion of a piston.

FIG. 3 is a longitudinal sectional view of a main part showing a state in which the push button is further pushed down to eject contents in a first cylinder.

FIG. 4 is a longitudinal sectional view of a main part showing a state in which a residual pressure in a first cylinder chamber is released in a final stroke of pressing down the push button.

FIG. 5 is a vertical sectional view of a pump portion of a conventional jetting container.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Container main body 12 Cylinder 12f Large diameter part 12g Throttle part 12h Inlet 13 1st cylinder chamber 14 2nd cylinder chamber 15 Cylinder chamber 18 Coil spring (biasing member) 19 Piston 19a Elastic valve part 20 Ejection pipe 20a Pipe 21 Gap 23 Pressing Button

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65D 47/06 B65D 83/76

Claims (1)

(57) [Claims] When the push button is depressed, the ejection pipe and the piston are pushed into the cylinder against the urging member, and the piston moves with respect to the ejection pipe due to an increase in the pressure of the cylinder chamber in the cylinder. and, creating a gap between them feeding into the jet pipe the contents within the cylinder chamber, while jetting from the nozzle of the push button through the conduit, by releasing the hand from the push button, the jet pipe and push the piston with the biasing member, thereby returning the push button, the cylinder
The inside chamber and a negative pressure in the ejection vessel to draw the contents in the container body in its cylinder chamber, by pressing the piston to the inner peripheral surface of the cylinder chamber when pushed into the cylinder to seal therebetween, dividing the cylinder chamber into a first cylinder chamber and a second cylinder chamber
In the meantime, while increasing the pressure in the first cylinder chamber,
Release the release button and release the piston to the uppermost position.
When the elastic valve portion forming a gap between the cylinder, while provided on the outer periphery of the piston, a diaphragm unit provided from said container body at the inlet to the second cylinder chamber, is provided on the cylinder A squirt vessel.