JPH0113083Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tube container for storing creamy cosmetics, toothpaste, etc.

[Conventional technology]

Various configurations are used as containers with the function of dispensing a fixed amount of contents, but most of them require a dedicated operation for dispensing a fixed amount, and a special container for dispensing a fixed amount of contents is used. The operating part was located outside the container body.

For this reason, handling of the container requires an operation for dispensing a fixed amount in addition to the usual conventional handling procedure, which has caused dissatisfaction with the troublesome operation.

One of the conventional techniques for resolving this dissatisfaction is the technique disclosed in, for example, Japanese Utility Model Publication No. 42-014958.

The technology disclosed in Japanese Utility Model Publication No. 42-014958 is constructed by assembling a slider for opening and closing the discharge port inside the container so that it can move up and down. The content liquid is poured out from the discharge port within the time until the discharge port is closed by a slider that moves downward and closes the discharge port after a certain period of time. In this way, since the time from when the container body is turned upside down to when the slider closes the discharge port is approximately constant, the content liquid poured out during that time can also be approximately constant.

In the above-mentioned conventional technology, a substantially constant amount of the liquid content can be poured out by an operation of standing the container body upside down.

[The problem that the idea aims to solve]

However, since the above-mentioned conventional technology utilizes the downward movement of the slider due to gravity within the liquid content, it is impossible to obtain proper operation when the viscosity of the liquid content increases beyond a certain level. Therefore, it is not applicable at all to pouring out paste-like contents such as cream. Particularly in tube containers where the amount of extruded contents is controlled by the amount of pressure deformation of the body, extrusion and dispensing of the contents cannot be achieved at all.

In addition, even if the slider is moved by pressing and deforming the container body by making some improvements to the above-mentioned conventional technology, it is possible to prevent the contents from entering the cylindrical body which is the metering part. It is impossible to obtain a continuous quantitative extrusion operation, which makes it impossible.

The causes of the above-mentioned problems in the conventional technology are as follows.
There is no means to forcefully return the slider, and there is an air bag.

Therefore, the present invention has been devised to solve the above-mentioned problems of the conventional technology, and operates a cylinder mechanism by deforming a bullet that is elastically deformed by pressing the main body of a tube container. The purpose of the present invention is to make it possible to pour out a fixed amount of contents from inside a tube container by a conventional pressing operation by regulating the contents and outside air going in and out.

[Means to solve the problem]

The means of the present invention to achieve the above object is to have a tube container body having a body made of soft synthetic resin whose lower end is sealed and a head having a spout connected to the upper end thereof, and the upper part is inserted into the spout. A suction hole is formed in the upper part of the cylindrical wall in the body, and
It has a cylinder tube in which a part of the cylinder wall is extended downward to form an assembly piece, It has a piston piece disposed inside this cylinder tube, One end is fixed to the lower end of the assembly piece, and the other end is fixed to the lower end of the assembly piece. is fixed to the piston piece and has a curved elastic piece that can be extended and deformed by an external force; a first check valve that is arranged in the upper part of the cylinder cylinder and closes the suction hole and opens by negative pressure in the cylinder cylinder; and a second check valve that is located at the opening of the mouth cylinder, closes the cylinder cylinder, and opens due to an increase in pressure within the cylinder cylinder.

Since the tube container body is filled with a cream-like content, the combination of the cylinder tube, piston piece, bullet piece, and both check valves is buried in this cream-like content. .

[Effect]

When the main body portion corresponding to the bullet piece is pressed to extend and deform the bullet piece, the piston piece will slide upward in the cylinder cylinder due to the elongation and deformation of the bullet piece.
Pressure inside the cylinder increases.

This pressure increase inside the cylinder causes the first check valve to close and the second check valve to open, allowing a certain amount of the contents in the cylinder to pass through the second check valve to the main body. pushed outside.

In this state, when the external force acting on the main body barrel is removed, the piston piece slides down and returns inside the cylinder cylinder due to the elastic return of the bullet piece, bringing the inside of the cylinder cylinder into a negative pressure state.

Due to the generation of negative pressure inside the cylinder, the second check valve becomes closed, and the first check valve opens, and the contents inside the main body pass through the first check valve that is now open. is sucked into the cylinder in preparation for the next outflow operation.

The suction hole to which the first check valve is installed is located directly below the head of the main body where the contents remain until the end, so the contents are poured out without wasting until the bullet fragments can no longer be properly elastically deformed. put out

〔Example〕

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

A tube container main body 1 made of soft synthetic resin is constructed by connecting a spout 3 to the upper end of a body 2 whose lower end is hermetically sealed via a shoulder 4.

The cylinder tube 5 that is tightly inserted and assembled into the mouth tube 3 of the main body 1 has a straight cylindrical shape, and the valve tube portion 9 is the upper end portion located above the flange 10 provided on the outer periphery. Insert the flange 10 into the mouth tube 3.
It is assembled into the main body 1 by tightly fitting and assembling it until it comes into contact with the opening edge of the lower end of the spout 3.

A valve seat piece 18 is provided around the inner peripheral surface of the cylinder cylinder 5 facing the flange 10 in the form of an inner flange, and when combined with the valve ball 20 disposed in the valve cylinder part 9, a second valve seat piece 18 is provided. It constitutes a check valve 17. A locking protrusion 19 is provided on the upper inner peripheral surface of the valve cylinder portion 9, which is a component of the second check valve 17, to prevent the valve ball 20 from slipping upward. It is protruded in such a way that it does not interfere with the

The first check valve 14 is made of a sufficiently soft elastic material and has a cylindrical piece shape with an outer diameter equal to the inner diameter of the cylinder wall 6 and is attached to a ring plate 15 that is firmly assembled and fixed to the lower surface of the valve seat piece 18 A thin valve piece 16 is provided hanging down, and this valve piece 16 is arranged opposite to the suction hole 7.

The bullet piece 12 is constituted by an elastic plate curved into a semicircular arc shape, and its curved center portion is located close to the barrel wall of the barrel portion 2 .

In this illustrated embodiment, both check valves 14,1
The combination of the cylinder tube 5, the piston piece 11, and the bullet piece 12, in which the cylinder 7 is assembled, is assembled into the main body 1 from the open bottom of the main body 1 before the contents are filled into the main body 1, The contents are injected into the main body 1 with this combination assembled from the open bottom, and then the open bottom is tightly sealed to form a bottom seal to form a tube container. is achieved.

Therefore, at the beginning of use, there is no content in the shander cylinder 5, that is, in the pressure chamber 13, so the barrel 2 is pressed once and run dry, and the content is placed in the pressure chamber 13. After inhaling, a predetermined amount dispensing operation is performed.

[Effect of idea]

Since the tube container according to the present invention has the above-described structure, it exhibits the following effects.

Since the contents of a pressure chamber with a constant volume are poured out,
Quantitative dispensing can be achieved accurately and reliably.

The operation for dispensing a fixed amount of the contents may be exactly the same as the operation for dispensing the contents of a conventional tube container, and the operation is simple.

The manufacturing process is extremely simple, since assembly is completed by simply inserting and assembling a combination of a cylinder tube, a piston piece, and a bullet piece that can be handled as an integral part into a main body having a conventional structure.

Since the piston piece is forcibly moved by the elasticity of the bullet piece to achieve pouring out of the contents, the pouring operation can be reliably achieved.

[Brief explanation of the drawing]

FIG. 1 is an overall vertical sectional view showing an embodiment of the present invention. FIG. 2 is an overall longitudinal cross-sectional view showing the embodiment shown in FIG. 1 in a state in which the contents have been poured out. Explanation of symbols: 1; Tube container body; 2; Body; 3; Mouth; 4; Shoulder; 5; Cylinder;
6; Cylinder wall, 7; Suction hole, 8; Assembly piece, 9; Valve cylinder part, 10; Flange, 11; Piston piece, 12;
Bullet piece, 13; Pressure chamber, 14; First check piece, 1
5; Ring plate, 16; Valve piece, 17; Second check valve, 18; Valve seat piece, 19; Locking protrusion, 20; Valve ball.

Claims (1)

[Scope of utility model registration request] A tube container main body is made of a soft synthetic resin whose lower end is sealed, and has a head with a spout connected to the upper end of the body, and the upper part is tightly fitted into the spout and is suspended within the body. A cylinder cylinder having a suction hole formed in the upper part of the cylinder wall and a part of the cylinder wall extending downward to form an assembly piece, a piston piece disposed inside the cylinder cylinder, and one end of which is attached to the assembly piece. A curved elastic piece is fixed to the lower end of the attached piece and the other end is fixed to the piston piece, and can be extended and deformed by an external force; A tube container comprising a first check valve that opens due to negative pressure, and a second check valve that is located at the opening of the mouth tube, closes the cylinder tube, and opens due to an increase in pressure within the cylinder tube.