JPS5852231Y2 - container - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a container for containing fluids such as dentifrice, shampoo, cream, and grease, and for taking out the appropriate amount at the appropriate time.

Conventionally used containers with pump mechanisms for storing this type of fluid are used for fluids or materials with low viscosity, and it is difficult to take out the contents of containers with high viscosity (approximately 300 to 1000 poise). Met.

Furthermore, when the container was turned upside down to suck up the contents with a dip tube, the contents could not be taken out.

Furthermore, when the container is used as a refillable container, if the viscosity is high, a large amount remains, making refilling difficult.

In order to improve this, there are systems that do not use dip tubes, but when sending fluid by reciprocating pump action, springs are used for the restoring force of the stroke, and in systems that use springs, rusting of the springs may cause The disadvantages were that the contents were dirty, causing problems in hygiene and aesthetics, the manufacturing process was complicated due to the large number of parts, the price was high, and the mold was large.

The present invention is different from the conventional one by comprising an intermediate chamber having a repetitive deformation part that undergoes elastic deformation by external force and has a restoring force by itself, and a head part having a check valve. Except for the above drawbacks, it does not use springs to prevent the contents from getting dirty due to rust, has a simple structure, has a simple manufacturing process, can reduce costs, is small and portable, and can handle high viscosity fluids. The object of the present invention is to provide a container from which a fluid can be taken out even when the container is turned upside down.

The present invention comprises a body part and a head part, the body part being a cylindrical part having a fluid storage part, and an intermediate part forming an intermediate chamber connecting the fluid storage part and the head part. Therefore, at least a portion of the wall of the intermediate portion forms a repeatedly deformed portion made of an elastic material, and the repeatedly deformed portion undergoes elastic deformation when an external force is applied to the content of the intermediate chamber. When the volume is eliminated and an external force is removed, the elastic restoring force of the wall body itself causes the wall body to return to its original state and restore the internal volume of the intermediate chamber, and the fluid storage section is configured to be able to change its internal volume in a sealed state. The container has a variable volume mechanism, includes a check valve between the head portion and the intermediate chamber, and includes a fluid outlet nozzle in the head portion.

The present invention will be described with reference to the drawings. In FIG. 1, the container consists of a body part A and a head part, and the body part A consists of a cylindrical part B and a middle part C.

The cylindrical part B is provided with a cylindrical body 1 made of polyethylene or the like on the outside, and its inner surface is coated with nylon to prevent perfume from permeating.

It has a bottom body 3 with a sealing lip 2 when sliding vertically along this inner circumferential surface, and its upper part has a protruding apex 4.
An elastic plate 5 for preventing descent is provided at the bottom.

A fluid storage section 7 is formed by the inner surface of the cylindrical body 1 and the upper surface of the bottom body 3, and the variable volume operation to change the internal volume is performed by the bottom body 3.
This is performed by a mechanism that moves up and down the inner surface of the cylindrical body 1.

The walls of the head portion and the intermediate portion C are integrally formed of a flexible material and are attached to the upper end of the cylindrical body 1 by interference fit or screws.

The outer diameter of the intermediate portion C is approximately the same as that of the cylindrical body 1, and the outer diameter of the head portion is smaller.

The wall thickness of the shoulder portion 6 of the step is made to be slightly thinner than other portions so that it is easily deformed, and forms a repetitive deformation portion.

An intermediate chamber 8 is formed inside the intermediate part C, and when the head part is pressed by hand or the like from above and an external force is applied, mainly the shoulder part 6 and its vicinity are deformed, causing elastic deformation as shown in 6' and caving in. The internal volume of the intermediate chamber 8 is reduced.

After that, when the external force is removed, the wall returns to its original shape due to its elastic restoring force.

A check valve 9 is provided between the head portion and the intermediate chamber 8, and a nozzle 10 is also provided.

If grooves 11 are provided in the horizontal direction on the inner surface of the wall of the intermediate portion C, deformation becomes easy.

The groove 11 may also be provided on the outer surface.

Appropriate materials are selected and used for each part, but the wall of the middle part C, especially the wall of the shoulder part 6, is made of a flexible and resilient material even if deformed, so it can be repeatedly deformed. A material that exhibits good stress resistance and crack resistance is preferable, and a material that has appropriate gas barrier properties and prevents moisture permeation is preferable in order to protect the contents.

The most desirable materials suitable for these conditions are silicone resin, urethane rubber, or blends of these with various ethylene-based copolymers.
Polypropylene, ionomer, polyacetal, etc. are also suitable, and those filled with inorganic fillers are also used.

The thickness of the wall of the shoulder portion 6 is suitably about 0.2 to 2.5 mm, more preferably about 0.5 to 1.5 mm.

is more preferable.

The cylindrical body 1 is injection molded from a general-purpose resin such as HDPE or PP.

It is desirable that the inner diameter be the same over the entire length, but in the case of injection molding, a draft taper of at least about 10' to 30' is required.

On the other hand, the sliding part of the seal lip 2 is formed thin as shown in FIG. We are trying to maintain close contact with each other.

The check valve 9 is integrally molded with the sleeve part from PP, LDPE, or the like, and the bottom body 3 is manufactured by injection molding from LDPE or the like.

In use, first, with the bottom body 3 positioned at the lowest part of the cylindrical body 1, the fluid storage portion 7 and the intermediate chamber 8 are filled with a fluid such as dentifrice, shampoo, cream, grease, etc. When the fluid is taken out, if the head part is pushed down by hand or other external force, the shoulder part 6 is deformed and depressed and lowered to the position 6'.

At this time, the fluid that was directly under the check valve 9 pushes up the check valve 9 and enters the head portion.

Next, when the hand or external force is removed, the shoulder portion 6 returns to its original state due to the elastic restoring force.

At this time, the check valve 9 is closed, and the fluid discharged above it rises as the head rises.

When the intermediate chamber 8, which temporarily became the minimum volume due to the depression of the shoulder 6, returns to its original volume, the upper end is closed by the check valve 9, so the fluid in the fluid storage section 7 is sucked up, and the bottom body 3 will rise.

By repeating this operation, the head portion will be filled with fluid, and the fluid will be pushed out from the nozzle 10 during the next push-down stroke, and thereafter a fixed amount of fluid will be pushed out with each push.

During this time, the tip of the elastic plate 5 touches the inner surface of the cylindrical body 1 and is prevented from descending.

By repeating this, the internal volume of the fluid storage section 7 gradually decreases, and finally the bottom body 3 reaches the top as shown in FIG.

At this time, since the top 4 of the bottom body 3 protrudes, the amount of fluid remaining in the container at the end of use can be minimized.

Since this embodiment is configured and operates as described above, it is possible to use fluids with relatively high viscosity (for example, about 300 to 1000 poise).
It is easy to handle, there is little residual amount on the wall of the container, and even if it is turned upside down, it is easy and reliable to take out the fluid, and since no spring is used for restoring force, it prevents the contents from getting dirty due to rust. and prevent hygienic and aesthetic problems.
The structure is simple, the manufacturing process is simple, and the price is reduced.
It is also small and convenient to carry.

FIGS. 4 and 5 show another embodiment in which the variable volume mechanism of the fluid storage section 7 is a tube 1 whose outer sheath is made of a flexible material.
This is an example of 2.

A flange 13 is provided on the inside of the upper part of the cylindrical body 1, and is removably attached to the mouth edge 14 of the upper end of the tube 12 by tight fitting, screws, or by being inserted between the flange 13 and the inner surface of the cylindrical body 1. There is.

Furthermore, a check valve 15 is provided between the fluid storage portion 7 and the intermediate chamber 8.
is provided.

The inside of the tube 12 is filled with a fluid in advance and the upper end is sealed with a thin film 16 made of plastic, metal, or laminate material as shown in FIG.
6 and the thin film 1 by raising the ring 17 formed integrally with the thin film 1
Remove 6 and install as shown in Figure 4.

In use, when the head part is pushed down by hand or external force, the vicinity of the shoulder part 6 deforms and collapses, reducing the internal volume of the intermediate chamber 8. When the hand or external force is removed, the elastic restoring force in the vicinity of the shoulder part causes the intermediate chamber 8 to collapse. The internal volume is restored, and the fluid in the fluid storage section 7 is taken out in fixed quantities from the nozzle 10 by the action of the check valves 9 and 15, and the tube 12 is gradually deformed and collapsed, and the internal volume of the fluid storage section 7 is reduced. Decrease.

Finally, the empty tube 12 is removed and replaced with a new one.

In this embodiment, in addition to the above-mentioned effects, there are two check valves, so the operation is reliable, and since the inside of the fluid storage section 7 receives only negative pressure and does not receive positive pressure, the installation of the tube 12 is easy. It has advantages such as a simple structure, easy tube replacement, and easy replenishment of fluid.

The material of the outer sheath of the tube 12 is desired to be strong and flexible, and a PE/aluminum/PE laminate is suitable; in this case, the thickness of the aluminum layer is 9 to 30 μm.
The appropriate thickness of the entire outer cover is about 30 to 100 μm.

Further, it is desirable that the entire tube be as thin as possible within a range that can withstand storage and transportation, but it is preferable that the upper end rim 14 be thick in the shape of a ring so that it can be easily attached.

FIGS. 6 and 7 show another embodiment, in which a blade 18 cuts through the thin film 16 of the tube 12 between the fluid container 7 and the intermediate chamber 8.
It is equipped with the following.

The thin film 16 is made of plastic, metal, or a laminate material and is stretched over the entire upper end of the tube 12 as shown in FIG. The thin film 16 can easily be cut into a circular shape because it is tilted relative to the base plate.

19 is a stopper that prevents the cut circular thin film from entering the intermediate chamber.

In addition to the effects of the above-mentioned example, this example has the advantage that the tube 12
The present invention has the advantage that the attachment operation is simple without the need to remove the thin film 16 by hand, and there is less risk of dirtying hands or accidentally spilling fluid during attachment.

No. 8 shows another embodiment, in which one of the shoulder parts 6 is thinned as a repeatedly deformed part, and elastically deforms and self-recovers.
In use, the shoulder portion 6 is pressed with a finger to deform it as shown in 6'.

As in the previous example, when the head part was pushed, the head part tilted and the direction of the nozzle 10 was not determined, which was inconvenient when brushing the teeth with a toothbrush. However, in the case where the head part is supported by a relatively rigid wall to minimize displacement, the nozzle 10
Since the direction of is constant, it is extremely convenient to use.

FIG. 9 shows another embodiment in which a bellows body 20 made of an elastic material is removably attached to the wall of the main body of the intermediate portion C as a repetitive deformation part with a nut 21. In use, the bellows body 20 is Press with your finger to reduce the internal volume of the intermediate chamber 8.

In this case, in addition to having the same effect as the above-mentioned example, the bellows part 20, which is a repeatedly deformed part that is prone to fatigue failure, is easy to replace, so even if it breaks, only this part needs to be replaced, making maintenance extremely easy.

In addition to the above-mentioned effects, in the above embodiment, the cylindrical body 1, which is the container body, maintains its original shape without being crushed even after use, so it looks good and can be kept upright.
Also, the trademark on the surface of the container remains easily visible.

Also, unlike aerosol containers, it can be used with thixotropic contents and can be used even when inverted.

By pointing the tip of the nozzle downward, it can be used upright even when receiving toothpaste with a toothbrush, and unlike tube containers, it maintains sufficient strength even when applied to large containers. has.

The present invention comprises a body part and a head part, the body part being a cylindrical part having a fluid storage part, and an intermediate part forming an intermediate chamber connecting the fluid storage part and the head part. At least a part of the wall of the intermediate portion forms a repetitively deformable portion made of an elastic material, and when an external force is applied, the repetitively deformable portion causes elastic deformation to reduce the internal volume of the intermediate chamber. is constructed such that when the external force is removed, the elastic restoring force of the wall body itself returns to restore the internal volume of the intermediate chamber, and the fluid storage section has a variable capacity that allows the internal volume to be changed in a sealed state. It has a volumetric mechanism, is equipped with a check valve between the head part and the intermediate chamber, and is equipped with a fluid outlet nozzle in the head part, so that it is possible to handle a high viscosity fluid,
In addition, the fluid can be easily and reliably taken out even when it is inverted, and it does not use springs to prevent contamination of the fluid due to rust, which prevents sanitary and aesthetic problems, and reduces the number of parts. It is possible to provide a container that is small in size, has a simple structure, is easy to manufacture, and can be reduced in price, and is small and convenient to carry, and has extremely great practical effects.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical cross-sectional front view;
Fig. 2 is a vertical cross-sectional side view of the used tube, Fig. 3 is a bottom view of Fig. 1, Fig. 4 is a vertical cross-sectional side view of another embodiment, and Fig. 5 is a plan view of the tube. Figure 6 is a longitudinal sectional side view of another embodiment, Figure 7 is a plan view of the tube, Figures 8 and 9.
The figures are partial vertical cross-sectional side views of different embodiments. 1... Cylindrical body, 2... Seal lip,
3...Bottom body, 4...Top part, 5...
... Elastic plate, 6 ... Shoulder, 7 ... Fluid storage section, 8 ... Intermediate chamber, 9 ... Check valve, 10. ...Nozzle, 11 ...Groove, 1
2...tube, 13...flange,
14... Mouth rim, 15... Check valve, 1
6...Thin film, 17...Ring, 18.
...Blade, 19...Stopper, 20...
...Accordion body, 21...Natsuto, A...
...Body part, B...Cylindrical part, C...Middle part, D...Head part.

Claims (1)

[Scope of utility model registration request] 1. It consists of a body part and a head part, and the body part consists of a cylindrical part having a fluid storage part and an intermediate part forming an intermediate chamber connecting the fluid storage part and the head part, At least a part of the wall of the intermediate portion forms a repetitively deformable portion made of an elastic material, and the repetitively deformable portion causes elastic deformation when an external force is applied to reduce the internal volume of the intermediate chamber and reduce the external force. If removed, the fluid storage section is configured to return to its original state by the elastic restoring force of the wall itself to restore the internal volume of the intermediate chamber, and the fluid storage section has a variable volume mechanism that allows the internal volume to be changed in a sealed state. A container characterized in that a check valve is provided between the head portion and the intermediate chamber, and a fluid outlet nozzle is provided in the head portion. 2. The container according to claim 1, which is provided with a check valve between the fluid storage portion and the intermediate chamber. 3. The container according to claim 1 or 2, wherein the variable volume mechanism comprises the cylindrical body and a bottom body slidably held on the inner surface of the cylindrical body. 4. The container according to claim 3, which is a registered utility model, wherein the top surface of the bottom body protrudes upward and the minimum volume of the intermediate chamber is minimized. 5. The container according to claim 1 or 2, wherein the variable volume mechanism is a tube whose jacket is made of a flexible material. 6. The container according to claim 5, wherein the tube is detachably attached to the cylindrical body. 7. Which of the utility model registration claims 1 to 6, in which the wall of the intermediate part near the joint part with the head part of the upper part of the intermediate part is formed thin to constitute a repetitive deformation part. Containers listed in one of the following paragraphs. 8. The structure according to any one of claims 1 to 7 of the utility model registration, wherein at least one of the inner and outer surfaces of the wall of the repetitive deformation part has a groove in a direction substantially perpendicular to the deformation direction. container. 9. The container according to any one of claims 1 to 8, wherein the repetitive deformation part is removably locked to the main body of the intermediate part.