JP6808286B2 - Double container - Google Patents

Description

The present invention relates to a double container in which a replaceable inner container is housed in the outer container.

Containers filled with contents such as cream are required to have excellent decorativeness, design, etc., and various decorations (evaporation, painting, thickening, etc.) are applied, but they are discarded and used as containers. Therefore, it is necessary to consider reducing the burden on the environment. Therefore, there is known a double container in which the outer container is reused by forming the container into a double structure, removing the inner container from which the contents have been used up from the outer container, and replacing the inner container with a new inner container.

For example, in the double container shown in Patent Document 1, the inner container 2 for accommodating the contents is distributed as a refill container in which the mouth portion 30 is closed by the protective cap 11. The protective cap 11 has a configuration in which the female screw portion 15 of the mounting cylinder portion 14 is screwed into the male screw portion 23 of the inner container 2 to be mounted on the mouth portion 20 of the inner container 2, and the protective cap 11 is attached to the inner container 2. In the mounted state, the packing 16 is sandwiched and sealed between the top wall portion of the protective cap 11 and the upper end portion of the mouth portion 20, so that the inner container 2 is sealed. In such a configuration, before or after inserting the inner container 2 into the outer container 3, the user releases the screw and removes the protective cap 11 from the inner container 2 for use.

Japanese Unexamined Patent Publication No. 2013-75672

However, since the double container shown in Patent Document 1 has a configuration in which the protective cap can be easily removed simply by releasing the screw, the protective cap is removed by mischief or the like during the distribution stage. There was a risk that the inner container would be opened.

The present invention takes into consideration the above-mentioned conventional problems, and prevents the protective cap from being inadvertently removed and opened due to mischief or the like at the distribution stage, and when the inner container is attached to the outer container. The challenge is to create a double container that can be easily opened.

Among the means for solving the above problems, the main means of the present invention is
And the inner container body which contents are filled, a protective cap for closing the mouth portion of the inner container body, and an outer container body inner container body is accommodated, the mouth of the outer container body contents body is accommodated an exterior cover for closing, a double container having,
The outer container body has a cylindrical portion and a bottom portion provided so as to be relatively rotatable in a state of being connected to the cylindrical portion, and a screw feeding mechanism is provided at a portion facing the bottom portion and the inner container body.
When the bottom portion is rotated , the inner container main body is screw-fed by the screw feeding mechanism, and the inner container main body can be attached to and detached from the outer container main body.

In the main means of the present invention, by rotating the outer container main body side, the inner container main body can be reliably mounted in the outer container main body, and the inner container main body can be reliably taken out from the outer container main body. Can be achieved.

Further, in the other means of the present invention, the protective cap is engaged with the mouth of the inner container body with the above-mentioned main means, and the inner container body is moved to a fixed position on the bottom side of the outer container body by the screw feeding mechanism. At this time, the protective cap is brought into contact with the mouth of the outer container body and moved relatively, so that the engagement between the protective cap and the inner container body is released.

In the above means, the protective cap is removed from the mouth of the inner container body in conjunction with the operation of rotating the outer container body side to mount the inner container body inside the outer container body, that is, the inner container is automatically opened. Can be achieved.
Further, in the above means, the screw feeding operation for attaching / detaching the inner container body can be achieved with a simpler configuration.

Further, in another means of the present invention, in the above means, a locking convex portion is formed on one of the wall surfaces where the cylindrical portion and the inner container body face each other, and the other means is a locking concave portion that can be engaged with the locking convex portion. Is formed, and the means of being formed is added.

In the above means, the inner container main body is prevented from rotating together with the cylindrical portion in the circumferential direction, and the inner container main body is ensured to move relative to the cylindrical portion in the vertical direction. Screw feed can be reliably achieved.

Further, in another means of the present invention, in the above means, an annular insertion portion and a guide convex portion are formed on one of the cylindrical portion and the bottom portion, and the guide that engages with the gap and the guide convex portion into which the annular insertion portion is inserted on the other side. This is an addition of means that a recess is formed.

In the above means, it is possible to prevent the annular insertion portion from coming off from the gap and to secure the relative rotation between the cylindrical portion and the bottom portion.

In the present invention, it is possible to prevent the protective cap from being inadvertently removed and opened due to mischief or the like at the distribution stage. Further, since the protective cap is removed in conjunction with the operation of attaching the inner container to the outer container, the inner container can be easily opened.

It is a half sectional view of the double container which shows the Example of this invention. It is a half cross-sectional view which shows the inner container (refill container) which has the inner container main body and the protective cap. It is sectional drawing which shows the initial state which attaches the inner container to the outer container main body. It is sectional drawing which shows the end state in which the inner container is mounted in the outer container main body.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a semi-cross-sectional view of a double container showing an embodiment of the present invention, FIG. 2 is a semi-cross-sectional view showing an inner container (refill container) having an inner container main body and a protective cap, and FIG. A cross-sectional view showing an initial state in which the inner container is mounted on the outer container body, and FIG. 4 is a cross-sectional view showing a completed state in which the inner container is mounted in the outer container body. The contents are omitted in each figure.
As shown in FIG. 1, the double container 1 of the present invention includes an inner container (refill container) 20 filled with contents such as cream, and an outer container 10 for accommodating the inner container 20. Has been done.

The outer container 10 is configured to have an outer container main body 11 and an outer lid 15 for closing the mouth portion 11a of the outer container main body 11, and the outer container main body 11 has a cylindrical portion 12 having open upper and lower ends. It is configured to have a bottom portion 13 rotatably connected to the lower end of the cylindrical portion 12. The entire outer container 10 including the cylindrical portion 12, the bottom portion 13, and the outer lid 15 constituting the outer container main body 11 is made of, for example, a synthetic resin such as polyolefin-based, polyester-based, and polystyrene-based, and is molded by injection molding or the like. ..

A locking recess 12a formed of a vertical groove is formed on the inner wall surface on the upper side of the cylindrical portion 12 constituting the outer container main body 11. As shown in FIGS. 3 and 4, in this embodiment, the locking recesses 12a are formed at two positions axisymmetric. Further, a thin annular insertion portion 12b is continuously provided at the lower end of the cylindrical portion 12, and an undercut-shaped guide convex portion 12c is integrally formed on the outer peripheral surface of the annular insertion portion 12b.

The bottom portion 13 is configured to include a bottom wall portion 13A, an inner wall portion 13B forming a double wall, and an outer wall portion 13C, and an annular gap 13a is provided between the inner wall portion 13B and the outer wall portion 13C. There is. A male screw portion 13b forming a part of the screw feed mechanism S described later is engraved on the inner surface of the inner wall portion 13B, and a guide recess 13c is formed on the inner surface of the outer wall portion 13C facing the gap 13a.

Then, in the cylindrical portion 12 and the bottom portion 13, the annular insertion portion 12b on the cylindrical portion 12 side is inserted into the gap 13a on the bottom portion 13 side, and the guide convex portion 12c on the cylindrical portion 12 side is inserted into the guide recess 13c on the bottom portion 13 side. Assembled in an engaged state. As a result, the annular insertion portion 12b can be guided by the gap 13a and rotate in the circumferential direction. Further, the engagement between the guide convex portion 12c and the guide concave portion 13c prevents the annular insertion portion 12b from coming off from the gap 13a. That is, the relative rotation between the cylindrical portion 12 and the bottom portion 13 is possible.

As shown in FIG. 1, the outer lid 15 constituting the outer container 10 is a climax cylindrical member having a top wall 15A and a peripheral wall portion 15B, and a female screw 15a is provided on the inner surface of the peripheral wall portion 15B. It is engraved. A disk-shaped packing 16 is fitted on the lower surface of the top wall 15A, and the packing 16 is placed between the lower surface of the top wall 15A of the outer lid 15 and the upper end surface of the mouth portion 21A of the inner container body 21 described later. The inside of the inner container main body 21 can be sealed by sandwiching and sealing the outer peripheral end portion.

As shown in FIG. 2, the inner container 20 is made of, for example, a synthetic resin such as polyolefin-based, polyester-based, or polystyrene-based, and is configured to have an inner container main body 21 and a protective cap 22 formed by, for example, injection molding. To.
The inner container main body 21 constituting the inner container 20 is a bottomed cylindrical member, and a male screw 21a is engraved on the outer wall surface of the mouth portion 21A of the inner container main body 21, and the male screw 21a is described above. A female screw 15a formed on the inner wall of the peripheral wall portion 15B of the outer lid 15 is screwed (see FIG. 1).

A flange 21b made of an annular shape is projected around the outer wall surface of the inner container main body 21 and below the male screw 21a, and a locking protrusion 21c extending in the vertical direction is projected below the flange 21b. As shown in FIGS. 3 and 4, in this embodiment, the locking convex portions 21c are formed at two positions forming axial symmetry, and these locking convex portions 21c constitute the above-mentioned outer container main body 11. It engages with the locking recess 12a formed on the inner wall surface of the cylindrical portion 12.

On the lower side of the inner container main body 21, a pot bottom portion 21C having a slightly smaller diameter is continuously provided via a step portion 21B. A female screw portion 21d forming a part of the screw feed mechanism S described later is engraved on the outer surface of the side wall of the pot bottom portion 21C, and the female screw portion 21d is an inner wall portion 13B of the bottom portion 13 constituting the outer container body 11. It is screwed into the male screw portion 13b formed on the inner surface of the above (see FIGS. 1 and 4).

The protective cap 22 constituting the inner container 20 is an eclipsed cylindrical member having a top wall 22A and a peripheral wall portion 22B, and the lower end of the peripheral wall portion 22B is a skirt portion 22C that slightly bulges in the outer diameter direction. An undercut-shaped locking portion 22a is provided around the inner surface of the skirt portion 22C. When the locking portion 22a engages with the flange 21b on the inner container body 21 side, the protective cap 22 closes the mouth portion 21A of the inner container body 21.
The top wall 22A is provided with an inner ring 22b that hangs down from the lower surface and comes into contact with the inner surface of the mouth portion 21A of the inner container main body 21, and the inner container 20 is attached to the outer container main body by the sealing function of the inner ring 22b. The inside of the inner container main body 21 is sealed until it is mounted inside the 11, that is, until the blockage by the protective cap 22 is released.

As shown in FIG. 2, the inner container 20 is placed in the distribution stage in a state where the mouth portion 21A of the inner container main body 21 filled with the contents is closed by the protective cap 22. When the protective cap 22 is attached to the mouth portion 21A of the inner container body 21, the skirt portion 22C of the protective cap 22 covers the male screw 21a and the flange 21b on the inner container body 21 side from the radial outside, and the locking portion of the protective cap 22. 22a firmly locks the lower end of the flange 21b of the inner container body 21. Thereby, especially in the distribution stage, it is possible to prevent the protective cap 22 from being removed from the inner container main body 21 due to mischief or the like, and the inner container 20 being inadvertently opened.

Next, the procedure for using the above-mentioned double container will be described with reference to FIGS. 3 and 4.
(Installation work of inner container)
The double container 1 is being circulated inner container body 21 the contents is filled in a state of being mounted within the outer case 10 (see FIG. 1), mounting the inner container body 21 in the interior of the outer container 10 First, as shown in FIG. 3, the inner container 20 is inserted into the outer container main body 11 with the outer lid 15 removed. At this time, the outer container main body 11 and the inner container main body 21 are relatively aligned in the circumferential direction, and are provided in the inner container main body 21 in the locking recess 12a formed in the cylindrical portion 12 on the outer container main body 11 side. The locked locking convex portion 21c is inserted. As a result, in the circumferential direction, the cylindrical portion 12 on the outer container body 11 side and the inner container body 21 are integrated. Therefore, when the bottom portion 13 is rotated while holding the cylindrical portion 12, only the bottom portion 13 is formed. Rotates to prevent the inner container body 21 from rotating with the bottom 13. At the same time, it is ensured that the inner container main body 21 moves relative to the cylindrical portion 12 along the vertical direction. Therefore, it is possible to reliably feed the screw of the inner container main body 21.

Next, in a state where the user holds the bottom portion 13 of the outer container body 11 with one hand and the cylindrical portion 12 of the outer container body 11 with the other hand, the bottom portion 13 is attached to the container shaft O with respect to the cylindrical portion 12. Rotate forward (for example, rotate clockwise) (screw feed operation). Then, the male screw portion 13b on the outer container body 11 side and the female screw portion 21d on the inner container body 21 side, which constitute the screw feed mechanism S, mesh with each other. When it is further rotated, as shown in FIG. 4, the inner container main body 21 can be screwed toward the lower bottom side. Then, the inner container body 21 is moved downward in the vertical direction to a fixed position where the bottom wall of the pot bottom portion 21C of the inner container body 21 abuts or is close to the bottom wall of the bottom portion 13 of the outer container body 11.

During this screw feeding operation, the lower end surface of the skirt portion 22C of the protective cap 22 comes into contact with the upper end surface of the mouth portion 11a, which is the upper end of the cylindrical portion 12 constituting the outer container body 11. Therefore, when the inner container body 21 is further rotated from this state, the protective cap 22 is relatively lifted and moved upward with respect to the downward movement of the inner container main body 21, so that the locking portion 22a on the protective cap 22 side And the flange 21b on the inner container body 21 side are disengaged in conjunction with each other, and the protective cap 22 is disengaged from the mouth portion 21A of the inner container body 21.
Finally, the inner container main body 21 is mounted inside the outer container 10 shown in FIG. 1 by screwing the outer lid 15 into the mouth portion 21A of the inner container main body 21 instead of the detached protective cap 22. It can be a heavy container 1.

(Replacement work of inner container)
When the contents are used up, the outer container 10 can be reused by replacing the used inner container body 21 in the outer container 10 with a new inner container body 21 filled with the contents. Become. In this replacement work, the used inner container main body 21 is first taken out from the outer container 10, but this work can be performed by reversing the order of the above-mentioned "inner container mounting work ".

That is, first, the outer lid 15 is screwed off to make the mouth portion 21A of the used inner container main body 21 appear. Next, a screw feeding operation is performed to reverse the bottom portion 13 of the cylindrical portion 12 in the direction of the container axis O (for example, rotation in the counterclockwise direction), and the used inner container main body 21 is moved upward to cause the screw feeding mechanism S. The male screw portion 13b on the outer container body 11 side and the female screw portion 21d on the inner container body 21 side are disengaged. As a result, the used inner container main body 21 can be taken out from the outer container main body 11.

Next, a new inner container body 21 filled with the contents is mounted in the outer container 10. Since this work is the same as the above-mentioned "mounting work of the inner container", detailed description thereof will be omitted, but the outer container By screwing the outer lid 15 into the mouth portion 21A of the new inner container main body 21 that is mounted in the main body 11, the replacement work of the inner container 20 is completed. As described above, in the present invention, when the inner container 20 is mounted in the outer container 20, the protective cap 22 is interlocked and removed by simply rotating the cylindrical portion 12 and the bottom portion 13 relatively, and the outer container 10 is opened. Because it can be done, the replacement work can be easily performed.

Although the configuration of the present invention and its action and effect have been described above with reference to Examples, the embodiments of the present invention are not limited to the above Examples.

For example, in the above embodiment, the outer lid 15 is closed to the mouth 21A of the inner container body 21 by screwing, but the outer lid 15 engages with the mouth 21A like the protective cap 22. It may be configured to be closed by this.

Further, in the above embodiment, the case where the locking recess 12a is formed on the inner wall surface of the cylindrical portion 12 constituting the outer container main body 11 and the locking convex portion 21c is formed on the outer wall surface of the corresponding inner container 20 is shown. As described above, the structure may be such that a locking convex portion is formed on the cylindrical portion 12 side and a locking concave portion is formed on the inner container 20.

Further, in the above embodiment, the case where the locking recess 12a and the corresponding locking protrusion 21c are formed at two positions forming axial symmetry have been described, but the locking recess 12a and the corresponding locking protrusion 21c are formed at at least one position. It may be formed at three or more positions.

Further, in the above embodiment, a configuration having an annular insertion portion 12b and a guide convex portion 12c on the cylindrical portion 12 side and a gap 13a into which these are inserted and a guide recess 13c on the bottom portion 13 side has been described. It is also possible to form an annular insertion portion and a guide convex portion on the 13 side, and a gap and a guide concave portion into which these are inserted are formed on the cylindrical portion 12 side.

The double container of the present invention can be used in a wider range of applications in the field of containers that require replacement of the inner container as needed.

1: Double container 10: Outer container 11: Outer container body 11a: Outer container body mouth part 12: Cylindrical part 12a: Locking recess 12b: Circular insertion part 12c: Guide convex part 13: Bottom part 13A: Bottom wall part 13B : Inner wall 13C: Outer wall 13a: Gap 13b: Male thread 13c: Guide recess 15: Exterior lid 15A: Top wall 15B: Peripheral wall 15a: Female thread 16: Packing 20: Inner container (refill container)
21: Inner container body 21A: Inner container body mouth 21B: Step 21C: Pot bottom 21a: Male screw 21b: Flange 21c: Locking convex 21d: Female thread 22: Protective cap 22A: Top wall 22B: Peripheral wall 22C: Skirt portion 22a: Locking portion 22b: Inner ring S: Screw feed mechanism

Claims (4)

With the contents of the inner container body is filled (21), the outer container mouth of the inner container body (21) and a protective cap for closing (21A) (22), the inner container body (21) is accommodated a body (11), the inner container body (21) the mouth of the outer container body that is accommodated (11) and the outer lid for closing the (11a) (15), a double container having,
The outer container main body (11) has a cylindrical portion (12) and a bottom portion (13) provided so as to be relatively rotatable in a state of being connected to the cylindrical portion (12), and the bottom portion (13). A screw feed mechanism (S) is provided at a portion facing the inner container body (21).
When the bottom portion (13) is rotated , the inner container body ( 21) is screw-fed by the screw feed mechanism (S), and the inner container body (21) can be attached to and detached from the outer container body (11). A double container characterized by being made possible. The protective cap (22) is engaged with the mouth portion (21A) of the inner container body (21), and the inner container body (21) is moved to the bottom portion (13) of the outer container body (11) by the screw feed mechanism (S). ) Side, the protective cap (22) comes into contact with the mouth portion (11a) of the outer container body (11) and is relatively moved to the protective cap (22). The double container according to claim 1, wherein the engagement with the inner container body (21) is released. A locking convex portion (12a) is formed on one of the wall surfaces where the cylindrical portion (12) and the inner container body (21) face each other, and a locking concave portion (12a) that can engage with the locking convex portion (12a) on the other side. The double container according to claim 1 or 2, wherein 21c) is formed. An annular insertion portion (12b) and a guide convex portion (12c) are formed on one of the cylindrical portion (12) and the bottom portion (13), and a gap (13a) into which the annular insertion portion (12b) is inserted and the guide on the other side. The double container according to any one of claims 1 to 3, wherein a guide concave portion (13c) that engages with the convex portion (12c) is formed.

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