JP2023174001A - Double container with refill container - Google Patents

Abstract

To provide a double container with a refill container, capable of suppressing the departure of the refill container.SOLUTION: A double container with a refill container comprises: a bottomed cylindrical outer container 11 extending in the vertical direction; an inner container 12 inserted into the outer container; and a refill container 13 which has a content stored therein, is formed in a bottomed cylindrical shape extending in the vertical direction, and is inserted into the inner container. The inner container is formed in a cylindrical shape in which both ends in the vertical direction are opened. An inner peripheral surface of the inner container comprises an upper inclined face 16 extending toward the inside in the radial direction as coming downward from an upper end edge, a lower inclined face 17 extending toward the inside in the radial direction as coming upward from a lower end edge, and a locking top which connects the upper inclined face and the lower inclined face to each other and is sharpened toward the inside in the radial direction. A locking projection 21 projecting toward the outside in the radial direction is formed on an outer peripheral surface of the refill container. The locking projection abuts on the lower inclined face, and abuts on the locking top or is close to the locking top.SELECTED DRAWING: Figure 1

Description

The present invention relates to a double container with a refill container.

BACKGROUND ART Conventionally, there has been known a container that includes an outer container and a refill container that contains contents and is inserted into the outer container, as shown in Patent Document 1 below, for example.

Utility Model Publication No. 63-40328

However, in the conventional container, it is difficult to prevent the refill container from separating upward from the outer container.

The present invention provides a double container with a refill container that can suppress detachment of the refill container.

A double container with a refill container according to one aspect of the present invention includes a cylindrical outer container with a bottom extending in the vertical direction, an inner container inserted into the outer container, and a container in which the contents are stored. a refill container formed into a bottomed cylindrical shape extending into the inner container and inserted into the inner container, the inner container being formed into a cylindrical shape with both ends open in the vertical direction, and the inner circumferential surface of the inner container includes an upper inclined surface extending radially inward from the upper edge downwardly, a lower inclined surface extending radially inward upward from the lower edge, the upper inclined surface and the lower inclined surface. a locking apex that connects the surfaces to each other and points toward the inside in the radial direction, and a locking protrusion that projects toward the outside in the radial direction is formed on the outer circumferential surface of the refill container, and the locking protrusion is in contact with the lower inclined surface, and is in contact with or close to the locking top.

The locking protrusion formed on the outer peripheral surface of the refill container contacts the downwardly inclined surface of the inner peripheral surface of the inner container, and contacts or is close to the top of the lock, so that the refill container is not attached to the inner container. This makes it difficult for the refill container to move upward, and it is possible to prevent the refill container from separating upward from the inner container due to, for example, vibrations or shocks when the cap is removed.
The inner container is formed into a cylindrical shape with both ends open in the vertical direction, the inner circumferential surface of the inner container has an upper sloped surface and a lower sloped surface, and a locking top connects the upper sloped surface and the lower sloped surface to each other. Therefore, the inner container, which has a locking top formed on its inner peripheral surface, is molded using a pair of molds that can be moved toward and away from each other in the vertical direction, and the parting line is located at the locking top. It can be shaped like this.
As a result, when the inner container is formed into a bottomed cylindrical shape with a closed bottom opening, for example, the molding die (core) is pulled out from inside the inner container upward only from the top opening of the inner container. This is not necessary, and it becomes possible to prevent the locking top from being rubbed upward by the molding die during demolding, and the inner container can be formed easily and accurately.

The angle of inclination of the upper end of the downwardly inclined surface with respect to the vertical direction may be larger than the angle of inclination with respect to the vertical direction of a portion located below the upper end.

Since the angle of inclination in the vertical direction of the upper end of the lower inclined surface is larger than the inclination angle in the vertical direction of the part located below the upper end, the locking protrusion is attached to the upper end of the lower inclined surface in the vertical direction. This makes it easier to bring the refill container into contact with the inner container, and it is possible to reliably prevent the refill container from separating upward from the inner container.

A flange portion protruding radially outward may be formed at the upper end of the refill container, and the flange portion may be placed on the upper opening edge of the inner container.

Since the flange formed at the upper end of the refill container is placed on the upper opening edge of the inner container, the refill container is prevented from moving downward relative to the inner container, and the refill container is removed from the inner container. You can definitely prevent them from leaving.

According to one aspect of the present invention, detachment of the refill container can be suppressed.

It is a longitudinal cross-sectional view of a double container with a refill container shown as one embodiment. FIG. 2 is an enlarged view showing part II of FIG. 1. FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A double container with refill container according to an embodiment of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the double container 1 according to this embodiment includes a bottomed cylindrical outer container 11 and a cylindrical inner container 12. The refill container 13 is formed into a cylindrical shape with a bottom. The double container 1 with a refill container 13 is a wide mouth jar container. The refill container 13 stores, for example, cosmetics such as cream. Note that the double container 1 with refill container 13 is not limited to a jar container, and may be modified as appropriate.

The outer container 11, the inner container 12, and the refill container 13 are arranged coaxially with the common axis O.
Hereinafter, the bottom 14 side of the outer container 11 along the common axis O will be referred to as the lower side, the opposite side will be referred to as the upper side, and the direction along the common axis O will be referred to as the up-down direction. The direction that intersects O is called the radial direction, and the direction that goes around the common axis O is called the circumferential direction.

The outer container 11 is formed into a cylindrical shape with a bottom that extends in the vertical direction. A fixed cylinder 14a extending upward is formed at the bottom 14 of the outer container 11. The fixed cylinder 14a is arranged coaxially with the common axis O. The upper end portion of the fixed tube 14a is located below the upper end opening of the outer container 11.
The inner container 12 is formed into a cylindrical shape with both ends open in the vertical direction. The inner container 12 is made of a resin material or the like. The lower end of the inner container 12 is fitted and fixed within the fixed tube 14a of the outer container 11. The upper part of the inner container 12 is located above the upper end of the outer container 11.

In the inner container 12, an enclosure is provided at an upper portion located above the upper end of the outer container 11, protruding toward the outside in the radial direction, extending downward, and surrounding the outer peripheral surface of the inner container 12 from the outside in the radial direction. A tube 15 is provided. The upper end of the surrounding cylinder 15 is located below the upper end of the inner container 12. The lower part of the surrounding cylinder 15 is located radially outside the fixed cylinder 14a and inserted into the outer container 11. A male threaded portion is formed on the outer peripheral surface of the upper portion of the surrounding tube 15 located above the upper end portion of the outer container 11 . The lower part of the surrounding cylinder 15 extends continuously over the entire length in the circumferential direction, and the upper part extends intermittently over the entire length in the circumferential direction. Two intermittent parts 15a are provided in the upper part of the surrounding cylinder 15, and the two intermittent parts 15a are provided at positions facing each other in the radial direction.

The inner circumferential surface of the inner container 12 has an upper inclined surface 16 extending radially inward from the upper end edge downward and a lower inclined surface 17 extending radially inward upward from the lower end edge. , a locking apex 18 that connects the upper inclined surface 16 and the lower inclined surface 17 to each other and is pointed toward the inside in the radial direction.
The length of the upper inclined surface 16 in the vertical direction is shorter than the length of the lower inclined surface 17 in the vertical direction. The upper inclined surface 16 and the locking top 18 are located above the upper end of the outer container 11.

As shown in FIG. 2, the angle of inclination of the upper end 17a of the lower inclined surface 17 with respect to the vertical direction is larger than the angle of inclination with respect to the vertical direction of the portion located below the upper end 17a. Note that the inclination angle of the former and the inclination angle of the latter may be the same.
The inclination angle of the upper inclined surface 16 in the vertical direction is equal to the inclination angle in the up-down direction of the upper end portion 17a of the lower inclined surface 17, and is larger than the inclination angle in the vertical direction of the portion located below the upper end portion 17a. It has become.
For example, the angle of inclination of the upper inclined surface 16 with respect to the vertical direction may be different from the angle of inclination of the upper end portion 17a of the lower inclined surface 17 with respect to the vertical direction, and the inclination of the portion of the lower inclined surface 17 located below the upper end portion 17a with respect to the vertical direction may be made different. It may be less than the angle.

The contents are stored in the refill container 13. The refill container 13 is made of, for example, a metal material, a resin material, or paper. The refill container 13 is formed into a cylindrical shape with a bottom extending in the vertical direction, and is inserted into the inner container 12.

A locking projection 21 is formed on the outer peripheral surface of the refill container 13 and projects radially outward. The locking protrusion 21 is in contact with the lower inclined surface 17 and is in contact with or close to the locking top portion 18 . The locking protrusion 21 is in contact with a portion of the lower inclined surface 17 located below the upper end portion 17a. The portion of the outer circumferential surface of the refill container 13 other than the locking protrusion 21 is separated from the inner circumferential surface of the inner container 12 inward in the radial direction.

The locking protrusion 21 is formed into a curved surface that projects outward in the radial direction. The locking protrusion 21 has a circular shape when viewed from the radial direction. A curved recess that is recessed toward the outside in the radial direction is formed at a position corresponding to the locking protrusion 21 on the inner peripheral surface of the refill container 13. It is formed into a hollow dome shape that extends toward the. A plurality of locking protrusions 21 are formed at intervals in the circumferential direction. Note that the locking protrusion 21 may extend continuously over the entire length in the circumferential direction.

A flange portion 22 is formed at the upper end of the refill container 13 and projects radially outward. The flange portion 22 is placed on the upper opening edge of the inner container 12. A folded portion extending downward is formed at the outer end of the flange portion 22 in the radial direction. Note that the flange portion 22 does not need to have a folded portion.

The refill container 13 is inserted into the inner container 12 from the upper end opening of the inner container 12. At this time, the radially outer end of the locking protrusion 21 of the refill container 13 passes downwardly over the locking top 18 on the inner peripheral surface of the inner container 12, and then slides over the upper end 17a of the lower inclined surface 17. It passes downward while moving.

In the illustrated example, a cap 19 in the shape of a capped cylinder that seals the upper end opening of the refill container 13 is removably screwed onto the upper end of the surrounding cylinder 15 . A packing 19a is attached to the lower surface of the top wall of the cap 19. The lower surface of the packing 19a is in airtight contact with the upper surface of the flange portion 22 of the refill container 13.

As explained above, according to the double container 1 with refill container 13 according to the present embodiment, the locking protrusion 21 formed on the outer peripheral surface of the refill container 13 is connected to the downwardly inclined surface 17 on the inner peripheral surface of the inner container 12. Since the refill container 13 is in contact with or in close proximity to the locking top 18, it becomes difficult for the refill container 13 to move upward relative to the inner container 12, and when the cap 19 is removed, it is difficult for the refill container 13 to move upward against the inner container 12. This can prevent the refill container 13 from separating upward from the inner container 12.

The inner container 12 is formed into a cylindrical shape with both ends open in the vertical direction, and the inner circumferential surface of the inner container 12 includes an upper inclined surface 16 and a lower inclined surface 17, and a locking top portion 18 is provided with an upper inclined surface 16 and a lower inclined surface 17. Since the lower inclined surfaces 17 are connected to each other, the inner container 12 with the locking apex 18 formed on the inner peripheral surface can be locked using a pair of molds that are provided so that they can be approached and separated in the vertical direction. It can be formed so that the parting line is located at the top portion 18.
As a result, if the inner container 12 is formed into a bottomed cylindrical shape with a closed lower end opening, the molding die (core) can be inserted from inside the inner container 12 only through the upper end opening of the inner container 12. There is no need to pull it out upward, and it becomes possible to prevent the locking top part 18 from being rubbed upward by the molding die during demolding, and the inner container 12 can be formed easily and accurately.

Since the angle of inclination of the upper end 17a of the lower inclined surface 17 with respect to the vertical direction is larger than the angle of inclination with respect to the vertical direction of the portion located below the upper end 17a, the locking protrusion 21 is connected to the lower inclined surface 17. The refill container 13 can be easily brought into contact with the upper end portion 17a in the vertical direction, and the refill container 13 can be reliably prevented from separating upward from the inner container 12.

Since the flange portion 22 formed at the upper end of the refill container 13 is placed on the upper opening edge of the inner container 12, the refill container 13 is prevented from moving downward relative to the inner container 12, and the refill container 13 is prevented from moving downward relative to the inner container 12. It is possible to reliably prevent the container 13 from separating from the inner container 12.

Note that the technical scope of the present invention is not limited to the embodiments described above, and various changes can be made without departing from the spirit of the present invention.

For example, the flange portion 22 may not be formed at the upper end of the refill container 13.
The inner container 12 may not be provided with the surrounding cylinder 15, and a male threaded portion or the like may be formed on the outer peripheral surface of the upper end of the inner container 12 to which the cap 19 is removably locked.
The cap 19 may be removably fitted onto the surrounding tube 15 .

In addition, it is possible to appropriately replace the components in the embodiment with well-known components without departing from the spirit of the present invention, and the embodiment and the modified example may be combined as appropriate.

1 Double container 11 Outer container 12 Inner container 13 Refill container 16 Upper inclined surface 17 Lower inclined surface 18 Locking top portion 21 Locking protrusion 22 Flange portion

Claims (3)

a bottomed cylindrical outer container extending in the vertical direction;
an inner container inserted into the outer container;
a refill container that accommodates contents and is formed into a bottomed cylindrical shape extending in the vertical direction and inserted into the inner container,
The inner container is formed in a cylindrical shape with both ends open in the vertical direction,
The inner peripheral surface of the inner container is
an upper inclined surface extending radially inward from the upper edge downward;
a lower inclined surface extending radially inward from the lower edge upward;
a locking apex that connects the upper inclined surface and the lower inclined surface to each other and is pointed toward the inside in the radial direction;
A locking protrusion that protrudes radially outward is formed on the outer peripheral surface of the refill container,
The locking protrusion is in contact with the lower inclined surface and is in contact with or close to the locking top. The double container with refill container according to claim 1, wherein the angle of inclination of the upper end of the downwardly inclined surface with respect to the vertical direction is larger than the angle of inclination with respect to the vertical direction of a portion located below the upper end. A flange portion protruding radially outward is formed at the upper end of the refill container,
The double container with refill container according to claim 1 or 2, wherein the flange portion is placed on the upper opening edge of the inner container.

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