JPH063826Y2 - Semi-liquid pouring container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Object of the Invention) The present invention is a container in which a semi-fluid content can be poured out by light finger pressure without the aid of high-pressure gas for injection, and has a simple structure. Moreover, the purpose is to provide something that is easy to use.

As a container for pouring out the ejected substance from the discharge port by pressing a part of the container such as a push button for injection with a fingertip, conventionally, a home-use manual sprayer incorporating an aerosol injection container or a small piston pump, etc. Is well known. However, the former has various drawbacks such as high cost associated with using high-pressure gas such as CFC gas, and the latter is currently used as a relatively viscous semi-liquid container such as cosmetic cream, pomade, and toothpaste. However, it is still not practical.

That is, as an example of the latter, the base of the injection pipe is penetrated and fixed to a large-diameter piston that traverses a cylindrical container, and the injection material is loaded below the piston and above the floating piston, and in reverse of the floating piston. An air chamber is formed between the bottom wall provided with a stop valve, and the floating piston naturally rises with the consumption of the propellant, so that outside air is supplied to the air chamber through the check valve. Actual development Sho 51-128841
Has been proposed to. However, since a large momentary pressure is applied to the floating piston each time the large-diameter piston is manually pushed, if the floating piston and the inner wall of the container are rubbed together, or if the check valve is not completely sealed, injection is performed. Practical application is difficult because the follow-up operation of the floating piston with respect to the weight reduction of the object becomes defective.

On the other hand, instead of a piston pump, a dome-shaped diaphragm pump is adopted, and a pour-out container with a suction valve of the pump on the top wall of the tubular container and a discharge valve operated by fluid pressure on the top wall of the dome is special. It is proposed in Japanese Laid-Open Patent Publication No. 57-68367. However, according to these proposals, since the intake valve and the discharge valve are driven by the fluid pressure,
In addition to fixing a part of the valve body to the top wall of the dome, the dome and the nozzle need to be molded separately and then fixed by means such as screwing, which results in high cost due to the complicated structure. Increasing production costs is a fatal drawback with such disposable containers. In addition, according to the above-mentioned conventional proposal, since the nozzle, which also serves as the push button, is fixed to the flexible diaphragm, the directionality of the nozzle is unstable every time the pouring operation is performed, which is inconvenient.

In the above-mentioned proposal, it is also known to provide a reverse spring as in Japanese Utility Model Laid-Open No. 56-10997, as a countermeasure against the malfunction of the floating piston which rises following the reduction of the amount of the injected matter. In order to prevent the malfunction of the floating piston, high precision machining is required in the end, and thus cost increase is inevitable.

In consideration of the present situation of the semi-fluid pouring container as described above, the inventor of the present invention has proposed an improvement of the injection container in which the floating piston rises in accordance with the consumption of the injection object, as described above, in Japanese Utility Model Laid-Open No. 60-38270. As proposed, a metal valve spring and a plate valve are installed in the passage of the injected fuel to the pump chamber in order to give a particularly early thrust to the pushed down valve stem, or a protruding plate spring for preventing the retrograde movement of the floating piston. Must be provided, which inevitably increases the cost of the device or destabilizes the operation.

The present invention can solve all of these drawbacks, and the present invention will be described with reference to the embodiments shown in the drawings.

(Constitution of the Invention) That is, 1 is a cylindrical container having a top wall 11 having a mouth wall 14 and a bottom wall 12 having a check valve 6 that opens inward, and a transverse wall 13 inside the container 1. Is fixed. Reference numeral 2 is an elastic cap having a short cylinder 21 protruding from the top. The elastic cap 2 is inserted between the top wall 11 and the transverse wall 13 and the bottom edge 22 of the elastic cap 2 is fixed to the transverse wall 13, so that the pump chamber 3 is formed between the elastic cap 2 and the transverse wall 13. ing. Reference numeral 4 denotes a valve stem, which has a bottomed shaft hole 41 and a side hole 42 in its upper portion, and a notch groove 43 in its lower peripheral surface. The valve stem 4 is inserted through the elastic cap 2 and the transverse wall 13, the side hole 42 engages with the short cylinder 21, and the lower peripheral surface of the valve stem 4 is slidable on the transverse wall 13. Snuggled,
Therefore, the valve stem 4 is pivotally supported by the above-mentioned mouth wall 14 and cross wall 13. Next, 5 is the nozzle 5
1 is a push button having a tubular stem 52 which is cap-fitted to the valve stem 4, and the hem edge of the tubular stem 52 is the short tube 2 described above.
Sitting on 1. Reference numeral 7 denotes a floating piston that is slidable on the cylindrical wall of the container 1, and is inserted into the container 1. By the insertion, an upper space 1a of the container 1 is provided between the floating piston 7 and the transverse wall 13, and the floating piston 7 and the bottom are provided. A bottom space 1b is formed between the walls 12. It should be noted that the check valve 6 in the illustrated example is a small rubber cap with a notch 61 formed in a part thereof. One thing is enough.

Since this invention is constructed as described above, as shown in FIG. 1, a semi-fluid jet is housed in the upper space 1a above the floating piston 7. In the illustrated embodiment, the bottom plate 12 and the floating piston 7 are removed for easy storage.

When the push button 5 is pushed down when the container is used, the valve stem 4 is pivotally supported by the mouth wall 14 of the container 1 and the transverse wall 13 fixed to the container 1 as described above, and the push button 5 has its tubular handle. Since 52 is capped onto the valve stem 4, the push button 5 descends vertically and thus the nozzle 51 remains in a constant orientation during the descent.

Now, since the tube 52 of the push button is seated on the short tube 21 of the elastic cap, the top of the elastic cap 2 is depressed as shown in FIG. The pump chamber 3 formed between the transverse walls 13 is contracted, and the lower portion of the short cylinder 21 engaged with the side hole 42 of the valve stem is opened.
2, communicate with the outside through the shaft hole 41 and the nozzle 51,
The air in the pump chamber 3 is discharged.

Next, if the push button 5 is released, the elastic cap 2
The shape is restored, and the short cylinder 21 closes the side hole 42, so that a negative pressure is generated in the pump chamber 3. The shape of the elastic cap 2 is restored and the notch groove 4 on the lower peripheral surface of the valve stem 4
3 reaches the transverse wall 13 and the above-mentioned negative pressure reaches the injection object through the notch groove 43, so that the injection object is sucked up into the pump chamber 3 from the notch groove 43. By repeatedly pressing and releasing the push button 5 several times, the pump chamber 3 is filled with the ejected substance. If the amount of the ejected matter in the upper space 1a is reduced by sucking up into the pump chamber 3 as described above, the floating piston 7 ascends along with this reduction.

When the push button 5 is pushed down in the state where the pump chamber 3 is full, the ejected substance is discharged from the nozzle 51 through the side hole 42 opened in the pump chamber 3 through the shaft hole 41. At this time, the nozzle 51
The directionality of is maintained as described above.

Since the bottom wall 12 of the container is provided with the check valve 6 that opens inward, outside air is replenished into the container through the check valve 6 when the floating piston 7 rises, and the bottom space 1b becomes equal in pressure to the outside air. keep. The point to be noted here is with respect to the upward movement of the push button 5, and thus the valve stem 4. That is, the valve stem 4 is not provided with a spring for ascending return, and the thrust of the ascending of the valve stem 4 is insufficient only by the restoring force of the elastic cap 2. However, when the push button 5 is pressed, the base of the valve stem 4 is located in the upper space 1a of the container.
When the floating piston 7 descends by a stroke corresponding to the volume of the penetration, the air in the bottom space 1b is compressed and accumulated as an elastic force. Thrust is exerted on the valve stem 4 via the floating piston 7 and the ejected substance. Therefore, when the pressing of the push button 5 is released, the thrust by the elastic cap 2 is added by the thrust of the air in the bottom space 1b, so that the valve stem 4 is smoothly raised and returned.
That is, the check valve 6 in this invention is the floating piston 7
Not only to prevent the reverse movement of the valve, but also to restore the valve stem 4.

(Effects of the Invention) Thus, according to this invention, the check valve provided on the bottom plate of the container not only prevents the floating piston from moving backward, but also participates in the returning action of the valve stem. Is not required.

Further, according to the present invention, since the opening / closing valve action of the pump chamber relating to the replenishment of the ejected matter is performed by the notch groove provided in the lower peripheral surface of the valve stem, it is not necessary to provide the elastic valve for the replenishment of the ejected matter. The construction of the container is significantly simplified.

Therefore, according to this invention, it is of course possible to smoothly inject the contents without the aid of the high pressure gas for injection, and the structure is simple and the cost is low, and the semi-fluid body is extremely easy to use. Can be provided.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention when not in operation, and FIG. 2 is a longitudinal sectional view of the same in use. 1 is a container, 11 is a top wall, 12 is a bottom wall, 13 is a transverse wall, 1
4 is a mouth wall, 1a is a top space, 1b is a bottom space,
2 is an elastic cap, 21 is a short cylinder, 22 is a hem edge, 3 is a pump chamber, 4 is a valve stem, 41 is a shaft hole, 42 is a side hole, 4
3 is a notch groove, 5 is a push button, 51 is a nozzle, 52 is a stem, 6 is a check valve, 61 is a notch, and 7 is a floating piston.

Claims (1)

[Scope of utility model registration request] 1. A cross-sectional wall 13 is fixed in a cylindrical container 1 having a top wall 11 having a mouth wall 14 and a bottom wall 12 having a check valve 6 that opens inward, and a short cylinder 21 is provided at the top. By inserting the elastic cap 2 protruding from the upper wall 11 and the transverse wall 13 and fixing the bottom edge 22 of the elastic cap 2 to the transverse wall 13, a pump chamber 3 is formed between the elastic cap 2 and the transverse wall 13. The bottomed shaft hole 41 and the side hole 42 are formed in the upper portion and the notch groove 4 is formed.
3 is the elastic cap 2
Also, the side wall 42 is engaged with the short cylinder 21 by penetrating through the transverse wall 13, and the lower peripheral surface of the valve stem 4 is slidably and densely inserted into the transverse wall 13. The valve stem 4 is axially supported by the transverse wall 13, the pipe stem 52 of the push button 5 having the nozzle 51 is cap-fitted to the valve stem 4, and the hem edge of the pipe stem 52 is seated on the short cylinder 21, and the container 1 A semi-movable piston 7 slidable with the cylindrical wall of the container 1 is inserted into the container 1, and an upper space 1a and a bottom space 1b of the container 1 are formed between the floating piston 7 and the transverse wall 13 and the bottom wall 12, respectively. Fluid pouring container.