JP7603389B2 - Double Cap - Google Patents

Description

The present invention relates to a double cap.

Conventionally, in containers for liquid cosmetics and the like, a double cap structure has been created in which an inner cap is attached to the neck of the container, and a transparent outer cap is then fitted over the inner cap, primarily to improve the appearance of the cap. A specific example of this structure is a transparent outer cap that is fitted over an opaque inner cap, and the two are assembled together so that they cannot be separated or rotated by engaging means such as an undercut to prevent slipping out or an undercut to prevent rotation. Various types of double caps have been proposed.

Patent Document 1 discloses a double cap that combines an opaque inner cap with a screw to be attached to the neck of a container, etc., with a transparent outer cap that fits over the inner cap, in which an opaque receiving section with approximately the same outer diameter as the outer cap is formed by folding back the lower part of the outer wall surface of the inner cap, the lower part of the transparent outer cap is inserted into this opaque receiving section, and in order to prevent the inner cap and the outer cap from coming off, an engagement means for preventing the inner cap and the outer cap from coming off is provided between the lower part of the outer cap and the receiving section of the inner cap in an area hidden by the opaque receiving section, and in order to prevent rotation between the inner cap and the outer cap, an insertion hole or recess is formed in the receiving section in the area hidden by the opaque receiving section, and a leg formed on the lower part of the outer cap is inserted into the insertion hole or recess to provide an engagement means for preventing rotation.

Patent document 2 discloses a double cylinder body comprising an outer cylinder and an inner cylinder arranged coaxially with the central axis of the outer cylinder and inside the outer cylinder, wherein the inner peripheral surface of the outer cylinder and the outer peripheral surface of the inner cylinder are each formed with a plurality of mutually engaging engagement portions spaced apart in the circumferential direction, and the respective engaging portions of the outer cylinder and the inner cylinder are each separately formed with vertical engaging portions that extend in the central axis direction and engage with each other, and when viewed radially, both a first distance along the circumferential direction between the vertical engaging portion and a first peripheral end portion located on one side of the circumferential direction of the engaging portion, and a second distance along the circumferential direction between the vertical engaging portion and a second peripheral end portion located on the other side of the circumferential direction of the engaging portion are different for each of the engaging portions of the outer cylinder and the inner cylinder.

Patent No. 4033664 Patent No. 6286334

In the double caps described in Patent Documents 1 and 2, the outer cap and the inner cap generally use different types of resin, and it is preferable that these resins can be disposed of separately. However, with the above-mentioned double cap structure, it is difficult to disassemble the outer cap and the inner cap, and as a result, the outer cap and the inner cap are sometimes thermally recycled or disposed of in a landfill as a single unit without being disassembled.

Therefore, there is a need to provide a double cap whose relative position is fixed during use and which can be easily disassembled after use.

As a result of intensive research, the present inventors have found that the above problems can be solved by the following means, and have completed the present invention. That is, the present invention is as follows:
<Aspect 1>
A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap slip-off prevention portion that fits into the inner cap slip-off prevention portion and an outer cap rotation prevention portion that fits into the inner cap rotation prevention portion, and the outer cap slip-off prevention portion has a convex shape,
(c) the concave shape of the inner cap retaining portion and the convex shape of the outer cap retaining portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-rotation portion from the inner cap anti-rotation portion, thereby removing the outer cap from the inner cap.
Double cap.
<Aspect 2>
A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and an outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap insertion portion and the outer cap stop portion have a concave shape,
(c) the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Double cap.
<Aspect 3>
3. The dual cap of claim 1 or 2, wherein the inner cap is constructed of an opaque material.
<Aspect 4>
The double cap according to aspect 3, wherein the inner cap fitting portion further includes an inner cap folded portion so as to conceal the inner cap slip-off prevention portion and the inner cap rotation prevention portion.
<Aspect 5>
The double cap according to any one of claims 1 to 4, wherein the tip portion of the inner cap anti-rotation portion is a convex portion that is convex toward the outer cap.
<Aspect 6>
The double cap according to any one of claims 1 to 5, wherein the tip of the inner cap anti-rotation portion further has an inner cap deformation assisting protrusion that triggers plastic deformation of the inner cap anti-rotation portion.
<Aspect 7>
A double cap according to any one of the preceding aspects, wherein the outer cap is constructed from a transparent synthetic resin.
<Aspect 8>
The double cap according to any one of claims 1 to 7, further comprising an outer/inner cap deformation assist recess on the tip side of the inner cap anti-rotation portion, which serves as a trigger for plastically deforming the inner cap anti-rotation portion.
<Aspect 9>
A double-capped container comprising a container and the double cap according to any one of aspects 1 to 8 attached to the container.
<Aspect 10>
10. The double-capped container of claim 9, further comprising contents enclosed within the container.
<Aspect 11>
A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, the inner cap insertion portion and the inner cap slip-off prevention portion having a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap slip-off prevention portion that fits into the inner cap slip-off prevention portion and an outer cap rotation prevention portion that fits into the inner cap rotation prevention portion, and the outer cap slip-off prevention portion has a convex shape,
(c) in a state in which the concave shape of the inner cap anti-slip portion and the convex shape of the outer cap anti-slip portion are engaged with each other, the inner cap anti-slip portion can be plastically deformed to be removed from the engaged outer cap anti-slip portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Dual capping kit.
<Aspect 12>
A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and an outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap insertion portion and the outer cap stop portion have a concave shape,
(c) in a state in which the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, the inner cap anti-slip portion can be plastically deformed to be removed from the engaged outer cap anti-slip portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Dual capping kit.

The present invention provides a double cap whose relative position is fixed during use and which can be easily disassembled after use.

Figure 1 is a schematic diagram of a dual cap according to a first embodiment of the present invention, Figure 1(a) is a perspective cross-sectional view of the dual cap according to the present invention, and Figure 1(b) is a side cross-sectional view of the dual cap according to the first embodiment of the present invention. Fig. 2 is a schematic diagram of the inner cap of the first embodiment of the present invention. Fig. 2(a) is a top perspective view of the inner cap of the first embodiment of the present invention. Fig. 2(b) is a perspective cross-sectional view of the inner cap of the first embodiment of the present invention. Fig. 2(c) is a side perspective view of the inner cap of the first embodiment of the present invention. Fig. 2(d) is a bottom view of the inner cap of the first embodiment of the present invention. Fig. 3 is a schematic diagram of an outer cap according to a first embodiment of the present invention. Fig. 3(a) is a top perspective view of the outer cap according to the first embodiment of the present invention. Fig. 3(b) is a bottom perspective view of the outer cap according to the first embodiment of the present invention. Fig. 3(c) is a side perspective view of the outer cap according to the first embodiment of the present invention. Fig. 3(d) is a bottom view of the outer cap according to the first embodiment of the present invention. FIG. 4 is an explanatory view of the step of fitting the outer cap and the inner cap together according to the first embodiment of the present invention. FIG. 5 is a diagram showing the state before and after the inner cap anti-rotation portion is removed from the outer cap anti-rotation portion.

"Double Cap"
In a first aspect of the present invention, a dual cap 100 includes an inner cap 120 of the present invention and an outer cap 110 fitted over the inner cap 120 (FIG. 1),
(a) the inner cap 120 has an inner cap inner peripheral shape 124 that can be attached to a container, an inner cap outer peripheral shape 126 along which the outer cap can be rotated, and an inner cap fitting portion 122 that fits into the container-side end of the outer cap ( FIG. 2 ); and (i) the inner cap fitting portion 122 has an inner cap insertion portion 1226 into which the outer cap can be inserted, an inner cap slip-off prevention portion 1224 that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion 1222 that can prevent rotation of the outer cap, and the inner cap insertion portion 1226 and the inner cap slip-off prevention portion 1224 have concave shapes ( FIG. 2 );
(ii) the inner cap anti-rotation portion 1222 has a handle portion 1222a that can be plastically deformed by application of an external force, and a tip portion 1222b that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap (FIGS. 2 and 5);
(b) the outer cap has an outer cap inner peripheral shape 114 that can rotate along the outer peripheral shape of the inner cap, an outer cap outer peripheral shape 116, and an outer cap fitting portion 112 that fits into the inner cap fitting portion (Figure 3), and (i) the outer cap fitting portion 112 is arranged at the end of the outer cap on the container side and has an outer cap slip-off prevention portion 1124 that fits into the inner cap slip-off prevention portion, and an outer cap anti-rotation portion 1122 that fits into the inner cap anti-rotation portion, and the outer cap slip-off prevention portion 1124 has a convex shape (Figure 3),
(c) the concave shape of the inner cap anti-slip portion and the convex shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
It is double capped.

The outer cap and the inner cap can be fitted together, for example, using the method shown in Figure 4, to obtain a double cap.

More specifically, as shown in FIG. 4(a), this double cap is arranged so that the outer cap retaining portion 1124 of the outer cap 110 can be inserted into the inner cap insertion portion 1226 of the inner cap 120, and then, as shown in FIG. 4(b), the outer cap retaining portion 1124 of the outer cap 110 is inserted into the inner cap insertion portion 1226 of the inner cap 120. At this time, the inner cap rotation preventing portion 1222 is elastically deformed toward the container by being pressed by the outer cap, although this is not shown.

Next, as shown in FIG. 4(c), the outer cap 110 is rotated clockwise. When the outer cap rotation stopper 1122 reaches the position of the inner cap rotation stopper 1222, the outer cap rotation stopper 1122 and the inner cap rotation stopper 1222 are engaged with each other. In this way, the inner cap 120 and the outer cap 110 can be engaged with each other to obtain a double cap.

After use, the double cap can be disassembled by the following procedure. First, the outer cap anti-rotation portion 1122 and the inner cap anti-rotation portion 1222 are engaged as shown in FIG. 5(a), and then, as shown in FIG. 5(b), the inner cap anti-rotation portion 1222 is plastically deformed, for example, toward the container side, to remove it from the outer cap anti-rotation portion 1122 to which it is engaged.

Then, the procedure shown in FIG. 4 can be carried out in reverse order, i.e., by rotating the outer cap relative to the inner cap, the outer cap retaining portion can be disengaged from the inner cap retaining portion, and the outer cap can be removed from the inner cap.

Therefore, with the above configuration, the relative positions are fixed during use, and the device can be easily disassembled after use.

Although not shown in the drawings, in a second aspect of the present invention, the double cap includes an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner peripheral shape that allows it to be attached to the container, an inner peripheral shape that allows the outer cap to be rotated along the inner peripheral shape, and an inner cap fitting portion that fits into the end of the outer cap on the container side, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent the outer cap from moving vertically, and an inner cap rotation prevention portion that can prevent the outer cap from rotating, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that can be plastically deformed by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap;
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the end of the outer cap on the container side and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap slip-out prevention portion that fits into the inner cap slip-out prevention portion, and an outer cap anti-rotation portion that fits into the inner cap anti-rotation portion, and the outer cap insertion portion and the outer cap anti-rotation portion have concave shapes,
(c) the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
It is double capped.

That is, the first aspect and the second aspect of the present invention are the same except for the following points:
(i) In the first aspect of the present invention, as shown in FIG. 2, there is a concave inner cap insertion portion 1226 and an inner cap retaining portion 1224, whereas in the second aspect of the present invention, there are concave outer cap insertion portions and outer cap retaining portions, respectively, as corresponding portions to the concave inner cap insertion portion 1226 and the inner cap retaining portion;
(ii) In the first aspect of the present invention, as shown in FIG. 3, there is a convex outer cap anti-slip portion 1124, whereas in the second aspect of the present invention, there is a corresponding convex inner cap anti-slip portion.

The following describes each component of the double cap of the present invention.

<Inner cap>
As shown in FIG. 2, the inner cap 120 has an inner cap inner peripheral shape 124 that can be attached to a container, an inner cap outer peripheral shape 126 along which the outer cap can be rotated, and an inner cap fitting portion 122 that fits into the end of the outer cap on the container side.

The material constituting the inner cap may be a transparent material or an opaque material, with the use of an opaque material being preferred from the viewpoint of concealing the fitting portion of the outer and inner caps and improving the appearance.

Examples of opaque materials that can be used include single metals such as copper, silver, palladium, iridium, platinum, and gold, alloy metals such as stainless steel, mixed resins in which transparent resins are mixed with color pigments such as titanium oxide, and opaque synthetic resins such as polypropylene.

Transparent materials that can be used include transparent synthetic resins such as polyethylene terephthalate and polycarbonate, and transparent inorganic materials such as glass.

(Inner cap inner circumference shape)
The inner cap has an inner peripheral shape that allows it to be attached to the container to be combined with it. The attachment can be performed by a means appropriate for the type of container, for example, by fitting, screwing, or the like.

(Outer circumference of inner cap)
The outer peripheral shape of the inner cap is a shape along which the outer cap can be rotated, and it is preferable that the outer peripheral shape of the inner cap is approximately cylindrical from the viewpoint of achieving this purpose. Here, in this specification, "approximately cylindrical" includes not only a strict cylindrical shape, but also a shape similar to a cylindrical shape, for example, a shape in which the corners (edges) of a cylindrical shape are curved. Other shapes referred to as "approximately..." are interpreted in the same way.

(Inner cap fitting part)
2, the inner cap fitting portion 122 has an inner cap insertion portion 1226 into which an outer cap can be inserted, an inner cap slip-off prevention portion 1224, and an inner cap rotation prevention portion 1222. In this embodiment, the inner cap insertion portion 1226 and the inner cap slip-off prevention portion 1224 have a concave shape.

In addition, although not shown, in a second aspect of the present invention, the inner cap fitting portion has an inner cap retaining portion that can prevent the outer cap from moving vertically, and an inner cap rotation preventing portion that can prevent the outer cap from rotating. In this aspect, the inner cap retaining portion has a convex shape.

When the inner cap 120 is made of an opaque material, it is preferable from an appearance standpoint that the inner cap fitting portion 122 has an inner cap folded portion 1228 so as to conceal the inner cap slip-out prevention portion 1224 and the inner cap rotation prevention portion 1222.

(Inner cap fitting part: Inner cap anti-rotation part)
The inner cap anti-rotation portion is a portion capable of preventing the outer cap from rotating. As shown in Fig. 5(a), the inner cap anti-rotation portion 1222 has a handle portion 1222a that can be plastically deformed by application of an external force, and a tip portion 1222b that is fitted into the outer cap anti-rotation portion 1122 to prevent the outer cap from rotating. The plastic deformation can be, for example, in the direction toward the container side.

In one embodiment, the tip 1222b of the inner cap anti-rotation portion 1222 is preferably a convex portion that is convex toward the outer cap, such as a columnar, hook-shaped (as shown in FIG. 5), or dome-shaped shape, from the viewpoint of flattening the inner cap's surface toward the container and improving the appearance and ease of use of the double cap.

From the viewpoint of facilitating plastic deformation, it is preferable that the inner cap anti-rotation portion 1222 has an inner cap deformation assisting protrusion 1222c that triggers plastic deformation of the inner cap anti-rotation portion 1222. For example, if the tip 1222b of the inner cap anti-rotation portion 1222 is hook-shaped, the inner cap deformation assisting protrusion 1222c may be, for example, a protrusion provided on a part of the periphery of the tip.

There may be one or more inner cap anti-rotation parts. If there are multiple inner cap anti-rotation parts, it is preferable from the standpoint of anti-rotation performance that these inner cap anti-rotation parts are equally spaced apart.

In addition, in a configuration in which the tip 1222b of the inner cap anti-rotation portion 1222 is a convex portion, it is preferable from the viewpoint of facilitating this plastic deformation to have an inner cap deformation assist recess 1222d on the tip side of the inner cap anti-rotation portion 1222, which serves as a trigger for plastic deformation of the inner cap anti-rotation portion 1222.

The inner cap deformation assist recess 1222d may be a gap that occurs on the tip side of the inner cap deformation assist protrusion 1222c when the outer cap anti-rotation portion 1122 and the inner cap anti-rotation portion 1222 are engaged, as shown in FIG. 5(a), for example.

When disassembling the cap, an external member can be inserted into this gap and raised against the inner cap deformation assist protrusion 1222c, allowing the inner cap anti-rotation portion 1222 to be easily plastically deformed.

(Inner cap fitting part: Inner cap retaining part)
The inner cap retaining portion is a portion capable of preventing the outer cap from moving vertically. The inner cap retaining portion may have an undercut shape.

The inner cap retaining portion may be a concave portion or a convex portion, and is formed so that it can fit with the outer cap retaining portion. For example, if the inner cap retaining portion is a concave portion, the corresponding outer cap retaining portion will be a convex portion. Also, if the inner cap retaining portion is a convex portion, the corresponding outer cap retaining portion will be a concave portion.

There may be one or more inner cap retaining portions. If there are multiple inner cap retaining portions, it is preferable from the standpoint of retaining performance that these inner cap retaining portions are spaced at equal intervals.

(Inner cap fitting part: inner cap insertion part)
In the first embodiment in which the inner cap anti-slip portion is concave, the inner cap insertion portion is a concave portion connected to the inner cap anti-slip portion, and is a portion for inserting the convex-shaped outer cap anti-slip portion toward the inner cap anti-slip portion.

In the second embodiment in which the inner cap slip-off prevention portion has a convex shape, the inner cap fitting portion does not have an inner cap insertion portion.

<Outer cap>
As shown in FIG. 3, the outer cap 110 has an outer cap inner peripheral shape 114 that can rotate along the outer peripheral shape of the inner cap, an outer cap outer peripheral shape 116, and an outer cap fitting portion 112 that fits into the inner cap fitting portion.

The material that makes up the outer cap may be any of the materials listed for the inner cap, and from the standpoint of appearance, it is preferable to use a transparent synthetic resin.

(Outer cap outer shape)
The outer peripheral shape of the outer cap may be any shape according to the outer shape of the container to be combined. This outer peripheral shape is not dependent on the inner peripheral shape of the outer cap, and may be, for example, a substantially cylindrical shape, a substantially conical shape, a substantially elliptical cylindrical shape, a substantially rectangular cylindrical shape, or an aesthetic shape such as a star shape. Here, in this specification, "substantially ~" includes not only the shape, but also a shape similar to the shape, for example, a shape in which the corners (edges) of the shape are curved.

When the outer cap outer peripheral shape is cylindrical, it is preferable from the viewpoint of appearance that the diameter of the outer cap outer peripheral shape is close to the maximum diameter of the inner cap. In this description, "close" means that the error is within 5%, 4%, 3%, 2%, or 1% from the same. In particular, when the inner cap has an inner cap folded back portion, it is preferable from the viewpoint of appearance that the diameter of the outer cap outer peripheral shape is close to the outer shape of the inner cap folded back portion.

(Outer cap inner circumference shape)
The inner circumferential shape of the outer cap is a shape that allows it to rotate along the outer circumferential shape of the inner cap. From the viewpoint of achieving this purpose, the inner circumferential shape of the outer cap is preferably substantially cylindrical.

(Outer cap fitting part)
In a first embodiment in which the outer cap slip-off prevention portion is convex, the outer cap fitting portion is disposed at the container side end of the outer cap, and has an outer cap slip-off prevention portion and an outer cap rotation prevention portion.

Here, the "container side end" of the outer cap may be composed of the container side portions of the inner and outer circumferential shapes of the outer cap, as well as the container side bottom surface of the outer cap.

In the second embodiment, in which the outer cap retaining portion is a recess, the outer cap fitting portion is disposed at the end of the outer cap facing the container, and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap retaining portion that fits with the inner cap retaining portion, and an outer cap rotation preventing portion that fits with the inner cap rotation preventing portion.

(Outer cap fitting part: outer cap anti-rotation part)
As shown in FIG. 5, the outer cap anti-rotation portion 1122 is a portion into which the inner cap anti-rotation portion 1222 is fitted.

In an embodiment in which the tip 1222b of the inner cap anti-rotation portion 1222 is a convex portion, it is preferable that the outer cap anti-rotation portion 1122 is a concave portion capable of housing the inner cap anti-rotation portion 1222, from the viewpoint of flattening the surface of the inner cap facing the container and improving the appearance and ease of use of the double cap.

The number of outer cap anti-rotation parts may correspond to the number of inner cap anti-rotation parts, for example, there may be one or more. If there are multiple outer cap anti-rotation parts, it is preferable from the standpoint of anti-rotation performance that these outer cap anti-rotation parts are equally spaced apart.

(Outer cap fitting part: Outer cap retaining part)
The outer cap retaining portion is a portion into which the inner cap retaining portion is fitted. The outer cap retaining portion may have an undercut shape.

If the inner cap retaining portion is a recess, the outer cap retaining portion will be a protrusion. In this case, the insertion portion will be recessed on the inner cap side.

In addition, if the inner cap retaining portion is a convex portion, the outer cap retaining portion is a concave portion. In this case, the insertion portion has a concave shape on the outer cap side.

If the inner cap is made of an opaque material, it is preferable from an appearance standpoint that the outer cap retaining portion be concealed by the outer periphery of the fitting portion of the inner cap.

(Outer cap fitting part: outer cap insertion part)
In the second embodiment in which the inner cap anti-slip portion is convex, the outer cap insertion portion is a concave portion connected to the outer cap anti-slip portion, and is a portion for inserting the convex-shaped inner cap anti-slip portion toward the outer cap anti-slip portion.

In the first embodiment, in which the outer cap retaining portion is convex, the outer cap fitting portion does not have an outer cap insertion portion.

<Container with double cap>
The double-capped container of the present invention comprises a container and the above-mentioned double cap attached to the container.

The double-capped container may further have contents enclosed within the container.

<container>
The container can be selected arbitrarily depending on the shape of the double cap, particularly the inner peripheral shape of the inner cap.

<Contents>
The contents are what is enclosed in the container.

The contents may be, for example, cosmetics, particularly liquid cosmetics. In particular, when cosmetics, particularly liquid cosmetics, are used, the present invention is useful because the double cap of the present invention may stimulate purchasing desire.

<Double cap kit>
In a first aspect of the present invention, the dual capping kit of the present invention comprises:
A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap slip-off prevention portion that fits into the inner cap slip-off prevention portion and an outer cap rotation prevention portion that fits into the inner cap rotation prevention portion, and the outer cap slip-off prevention portion has a convex shape,
(c) When the concave shape of the inner cap anti-rotation portion is engaged with the convex shape of the outer cap anti-rotation portion and the inner cap anti-rotation portion is engaged with the outer cap anti-rotation portion, the inner cap anti-rotation portion can be plastically deformed to remove it from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-rotation portion from the inner cap anti-rotation portion, and the outer cap can be removed from the inner cap.

In a second aspect of the present invention, the double capping kit of the present invention is a double capping kit comprising an inner cap and an outer cap that can be fitted to cover the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and an outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap insertion portion and the outer cap stop portion have a concave shape,
(c) When the convex shape of the inner cap anti-rotation portion is engaged with the concave shape of the outer cap anti-rotation portion and the inner cap anti-rotation portion is engaged with the outer cap anti-rotation portion, the inner cap anti-rotation portion can be plastically deformed to remove it from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-rotation portion from the inner cap anti-rotation portion, and the outer cap can be removed from the inner cap.

For details on each component of the double capping kit, please refer to the description on double capping.

100 Double cap 110 Outer cap 112 Outer cap fitting portion 1122 Outer cap anti-rotation portion 1124 Outer cap anti-slip portion 114 Outer cap inner peripheral shape 116 Outer cap outer peripheral shape 120 Inner cap 122 Inner cap fitting portion 1222 Inner cap anti-rotation portion 1222a Handle portion 1222b Tip portion 1222c Inner cap deformation assist convex portion 1222d Inner cap deformation assist concave portion 1224 Inner cap anti-slip portion 1226 Inner cap insertion portion 1228 Inner cap folded portion 124 Inner cap inner peripheral shape 126 Inner cap outer peripheral shape

Claims (14)

A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that can be plastically deformed by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap, and the tip portion further has an inner cap deformation assisting protrusion that serves as a trigger for plastically deforming the inner cap anti-rotation portion,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap slip-off prevention portion that fits into the inner cap slip-off prevention portion and the outer cap rotation prevention portion that fits into the inner cap rotation prevention portion, and the outer cap slip-off prevention portion has a convex shape,
(c) the concave shape of the inner cap anti-slip portion and the convex shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Double cap. A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the end of the outer cap on the container side, and has an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap stop portion has a convex shape, and the outer cap rotation stop portion has an inner cap deformation assisting recess on the tip side of the inner cap rotation stop portion that serves as a trigger for plastically deforming the inner cap rotation stop portion.
(c) the concave shape of the inner cap retaining portion and the convex shape of the outer cap retaining portion are fitted together, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are fitted together,
(d) the inner cap anti-rotation portion is plastically deformed to be removed from the outer cap anti-rotation portion to which it is fitted, and the outer cap is rotated relative to the inner cap to remove the outer cap slip-out prevention portion from the inner cap slip-out prevention portion, thereby removing the outer cap from the inner cap;
Double cap. A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that can be plastically deformed by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap, and the tip portion further has an inner cap deformation assisting protrusion that serves as a trigger for plastically deforming the inner cap anti-rotation portion,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, and the outer cap insertion portion and the outer cap stop portion have a concave shape,
(c) the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Double cap. A double cap comprising an inner cap and an outer cap fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap insertion portion and the outer cap stop portion have a concave shape, and the outer cap rotation stop portion further has an inner cap deformation assist recess on the tip side of the inner cap rotation stop portion that serves as a trigger for plastically deforming the inner cap rotation stop portion,
(c) the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, and the inner cap anti-rotation portion and the outer cap anti-rotation portion are engaged with each other; and (d) the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Double cap. The double cap according to any one of claims 1 to 4, wherein the inner cap is made of an opaque material. The double cap according to claim 5, wherein the inner cap fitting portion further has an inner cap folded portion so as to conceal the inner cap slip-out prevention portion and the inner cap rotation prevention portion. The double cap according to any one of claims 1 to 6, wherein the tip of the inner cap anti-rotation part is a convex part that is convex toward the outer cap. The double cap according to any one of claims 1 to 7, wherein the outer cap is made of a transparent synthetic resin. A double-capped container comprising a container and a double cap according to any one of claims 1 to 8 attached to the container. The double-capped container according to claim 9, further comprising a content enclosed in the container. A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that can be plastically deformed by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap, and the tip portion further has an inner cap deformation assisting protrusion that serves as a trigger for plastically deforming the inner cap anti-rotation portion,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap slip-off prevention portion that fits into the inner cap slip-off prevention portion and the outer cap rotation prevention portion that fits into the inner cap rotation prevention portion, and the outer cap slip-off prevention portion has a convex shape,
(c) in a state in which the concave shape of the inner cap anti-rotation portion and the convex shape of the outer cap anti-rotation portion are engaged with each other, the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-rotation portion from the inner cap anti-rotation portion, thereby removing the outer cap from the inner cap.
Dual capping kit. A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap insertion portion into which the outer cap can be inserted, an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap insertion portion and the inner cap slip-off prevention portion have a concave shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap stop portion has a convex shape, and the outer cap rotation stop portion further has an inner cap deformation assisting recess on the tip side of the inner cap rotation stop portion that serves as a trigger for plastically deforming the inner cap rotation stop portion,
(c) in a state in which the concave shape of the inner cap anti-rotation portion and the convex shape of the outer cap anti-rotation portion are engaged with each other, the inner cap anti-rotation portion can be plastically deformed to be removed from the engaged outer cap anti-rotation portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-rotation portion from the inner cap anti-rotation portion, thereby removing the outer cap from the inner cap.
Dual capping kit. A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that can be plastically deformed by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap, and the tip portion further has an inner cap deformation assisting protrusion that serves as a trigger for plastically deforming the inner cap anti-rotation portion,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, and the outer cap insertion portion and the outer cap stop portion have a concave shape,
(c) in a state in which the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, the inner cap anti-slip portion can be plastically deformed to be removed from the engaged outer cap anti-slip portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Dual capping kit. A double capping kit comprising an inner cap and an outer cap that can be fitted over the inner cap,
(a) the inner cap has an inner cap inner peripheral shape that allows it to be attached to a container, an inner cap outer peripheral shape along which the outer cap can be rotated, and an inner cap fitting portion that fits into the container side end of the outer cap, and (i) the inner cap fitting portion has an inner cap slip-off prevention portion that can prevent vertical movement of the outer cap, and an inner cap rotation prevention portion that can prevent rotation of the outer cap, and the inner cap slip-off prevention portion has a convex shape,
(ii) the inner cap anti-rotation portion has a handle portion that is plastically deformable by application of an external force, and a tip portion that is fitted into the outer cap anti-rotation portion to prevent rotation of the outer cap,
(b) the outer cap has an outer cap outer peripheral shape, an outer cap inner peripheral shape that can rotate along the outer peripheral shape of the inner cap, and an outer cap fitting portion that fits into the inner cap fitting portion, and (i) the outer cap fitting portion is disposed at the container side end of the outer cap and has an outer cap insertion portion into which the inner cap can be inserted, an outer cap stop portion that fits into the inner cap stop portion, and the outer cap rotation stop portion that fits into the inner cap rotation stop portion, the outer cap insertion portion and the outer cap stop portion have a concave shape, and the outer cap rotation stop portion further has an inner cap deformation assist recess on the tip side of the inner cap rotation stop portion that serves as a trigger for plastically deforming the inner cap rotation stop portion,
(c) in a state in which the convex shape of the inner cap anti-slip portion and the concave shape of the outer cap anti-slip portion are engaged with each other, the inner cap anti-slip portion can be plastically deformed to be removed from the engaged outer cap anti-slip portion, and the outer cap can be rotated relative to the inner cap to remove the outer cap anti-slip portion from the inner cap anti-slip portion, thereby removing the outer cap from the inner cap.
Dual capping kit.

Images