JP6833279B2 - Inner container with cap - Google Patents

Description

The present invention relates to an inner container with a cap for refilling.

Conventionally, as a container for containing contents such as cream, a double container including an inner container and an outer container for refilling the contents is known. In such a double container, the inner container in which the contents are used up is removed from the outer container, and a new unused inner container is attached to the outer container for use (see Patent Document 1). Further, in order to maintain the quality of the contents, the unused inner container is provided with a cap or a sheet-like member that closes the upper end opening of the inner container in advance, and the inner container is attached to the outer container. When used, the cap or sheet-like member is removed before use.

JP-A-2016-222287

However, since the cap or sheet-like member attached to the unused inner container as described above can be removed from the inner container relatively easily, the contents are illegally opened before use due to mischief or the like. There was a risk of impairing the quality of.

Therefore, an object of the present invention is to provide an inner container with a cap having a structure capable of preventing unauthorized use of the inner container in an unused state.

The present invention has been made to solve the above problems, and the inner container with a cap of the present invention includes an inner container arranged inside a bottomed tubular outer container to form a double container, and the contents thereof. An inner container with a cap for refilling, provided with a cap attached to the filled and unused inner container.
The inner container includes a tubular peripheral wall portion having an opening at one end and a bottom wall portion that closes the other end of the peripheral wall portion.
The cap includes a top wall portion that closes the opening when mounted on the inner container, and a tubular outer wall portion that is connected to the top wall portion and surrounds the peripheral wall portion from the outside.
On the inner peripheral surface of the outer wall portion, an engaged portion that undercuts and engages with an engaging portion provided on the outer peripheral surface of the peripheral wall portion, and the tip side of the outer wall portion with respect to the engaged portion. A sliding surface portion that inclines outward in the radial direction toward the tip is provided.
The top wall portion has a sealing cylinder portion that abuts on the inner peripheral surface of the peripheral wall portion in the mounted state, and a pressing portion provided radially inside the sealing cylinder portion.
The pressing portion has a vertical rib that hangs down from the lower surface.
In the process of inserting the inner container to which the cap is attached from the bottom wall side into the inside of the outer container, the sliding surface portion slides with respect to the side wall portion of the outer container, and the outer wall portion By deforming outward in the radial direction, the undercut engagement of the engaged portion with the engaging portion is released, the inner container is configured to be disengaged from the cap , and the cap is attached. It is characterized in that the sealing cylinder portion is configured to be deformed inward in the radial direction by pushing the pressing portion in the process of inserting the inner container into the outer container. ..

In the inner container with a cap of the present invention, it is preferable that the outer wall portion covers more than half of the peripheral wall portion in the axial direction in the mounted state.

Further, in the inner container with a cap of the present invention, it is preferable that the sliding surface portion is provided near the tip of the outer wall portion.

Further, in the inner container with a cap of the present invention, the inner container may have a fitting portion that protrudes from the lower surface of the bottom wall portion and can be fitted to the fitted portion of the outer container. preferable.

Further, in the inner container with a cap of the present invention, the engaging portion is an outward convex portion protruding from the outer peripheral surface of the peripheral wall portion, and the engaged portion is the inner peripheral surface of the outer wall portion. It is preferably an inwardly convex portion that protrudes from.

Further, in the inner container with a cap of the present invention, the outer wall portion is formed with a notch portion extending in the axial direction from the top wall portion toward the tip of the outer wall portion.
It is preferable that the engaged portion is provided at the end of the notch portion.
Further, the inner container with a cap of the present invention is attached to the inner container which is arranged inside the bottomed tubular outer container to form a double container and the inner container which is filled with the contents and is in an unused state. An inner container with a cap for refilling, which has a cap to be refilled.
The inner container includes a tubular peripheral wall portion having an opening at one end and a bottom wall portion that closes the other end of the peripheral wall portion.
The cap includes a top wall portion that closes the opening when mounted on the inner container, and a tubular outer wall portion that is connected to the top wall portion and surrounds the peripheral wall portion from the outside.
On the inner peripheral surface of the outer wall portion, an engaged portion that undercuts and engages with an engaging portion provided on the outer peripheral surface of the peripheral wall portion, and the tip side of the outer wall portion with respect to the engaged portion. A sliding surface portion that inclines outward in the radial direction toward the tip is provided.
The outer wall portion is formed with a notch portion extending in the axial direction from the top wall portion toward the tip of the outer wall portion.
The engaging portion is an outward convex portion protruding from the outer peripheral surface of the peripheral wall portion.
The engaged portion is an inwardly convex portion protruding from the inner peripheral surface of the outer wall portion, and is provided on the end surface of the notch portion.
In the process of inserting the inner container to which the cap is attached from the bottom wall side into the inside of the outer container, the sliding surface portion slides with respect to the side wall portion of the outer container, and the outer wall portion By deforming outward in the radial direction, the undercut engagement of the engaged portion with the engaging portion is released, and the inner container is configured to be disengaged from the cap.

According to the present invention, it is possible to provide an inner container with a cap having a configuration capable of preventing unauthorized use of the inner container in an unused state.

It is a partial cross-sectional side view of the inner container with a cap which concerns on one Embodiment of this invention. It is sectional drawing which shows a mode that the inner container in the inner container with a cap shown in FIG. 1 is attached to the outer container. It is a partial cross-sectional side view which shows the state which the inner container is attached to the outer container. It is a partial cross-sectional side view which shows the state which attached the outer lid to the mouth part of the outer container in the state shown in FIG. It is a partial cross-sectional side view of the inner container with a cap which concerns on another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present specification, the vertical direction means the axial direction along the axis C which is the central axis of the inner container 10, the outer container 20, and the cap 50, and the upper direction means the opening 12 of the inner container 10. The side (for example, the upper side in FIG. 1) and the lower side mean the side where the bottom wall portion 14 is located (for example, the lower side in FIG. 1).

As shown in FIG. 1, the capped inner container 1 according to the present embodiment includes an inner container 10 and a cap 50. The inner container 10 is arranged inside the outer container 20 (see FIGS. 3 and 4) described later to form the double container P, and the cap 50 is filled with the contents and is in an unused state. It is temporarily attached to the container 10 and removed when the content S is used.

The inner container 10 includes a bottomed tubular content accommodating portion 11 having an axis C as a central axis. The inside of the content accommodating portion 11 is an accommodating space for the content S. In the present embodiment, the content accommodating portion 11 is composed of a peripheral wall portion 13 having an opening 12 at one end thereof and a bottom wall portion 14 that closes the other end of the peripheral wall portion 13. An outward convex portion 15 (engaging portion) is provided on the outer peripheral surface of the peripheral wall portion 13. The outward convex portion 15 may have a ring shape that extends continuously in the circumferential direction, or may have a shape that is intermittent in the circumferential direction. In this example, the plurality of outward convex portions 15 are evenly arranged in the circumferential direction.

Here, each outward convex portion 15 is provided with an inclined surface portion 15a that is inclined outward in the radial direction toward the lower side. This facilitates the attachment of the cap 50 to the inner container 10. That is, when the cap 50 is covered and pushed in from above the inner container 10, the sliding surface portion 52b slides with respect to the inclined surface portion 15a, so that the inward convex portion 52a smoothly gets over the outward convex portion 15 and is in charge of undercutting. It will match.

An annular thick portion 16 is provided at the upper end portion of the peripheral wall portion 13 so as to project radially outward from the outer peripheral surface. The bottom wall portion 14 is provided with a tubular fitting portion 17 that protrudes from the lower surface thereof and extends in the axial direction parallel to the axis C.

The cap 50 is a member that is attached to the inner container 10 in an unused state and closes the opening 12 to maintain the quality of the content S in the inner container 10. The cap 50 includes a top wall portion 51 that covers the opening 12 when mounted on the inner container 10, and a tubular outer wall portion 52 that is connected to the outer edge portion of the top wall portion 51 and surrounds the peripheral wall portion 13 from the outside. Is equipped with. In the present embodiment, the outer wall portion 52 surrounds the peripheral wall portion 13 over the entire circumference, covers more than half of the peripheral wall portion 13 in the axial direction, and extends to the vicinity of the lower end portion of the peripheral wall portion 13.

The top wall portion 51 has an annular wall portion 51a connected to the upper end portion of the outer wall portion 52, a cylindrical sealing cylinder portion 51b hanging from the inner peripheral edge portion of the annular wall portion 51a, and a diameter of the sealing cylinder portion 51b. An annular lower annular wall 51c provided inside in the direction, an inner cylinder portion 51d extending upward from the inner peripheral edge portion of the lower annular wall 51c, and a disk-shaped upper wall portion 51e that closes the upper end portion of the inner cylinder portion 51d. And have.

The annular wall portion 51a is arranged above the upper end surface of the peripheral wall portion 13. In the present embodiment, the annular protrusion protruding from the lower surface of the annular wall portion 51a abuts on the upper end surface of the peripheral wall portion 13 to enhance the airtightness. The sealing cylinder portion 51b is in contact with the inner peripheral surface of the peripheral wall portion 13 over the entire circumference. Inside the inner cylinder portion 51d, a vertical rib 51f hanging from the lower surface of the upper wall portion 51e is provided. The vertical rib 51f is formed in a cross shape (when viewed from the direction along the axis C) in a plan view.

On the inner peripheral surface of the outer wall portion 52, an inward convex portion 52a (engaged portion) that undercuts and engages with the outward convex portion 15 and a tip side of the outer wall portion 52 with respect to the inward convex portion 52a (FIG. 1). On the lower side), a sliding surface portion 52b that inclines outward in the radial direction toward the tip is provided. In the present embodiment, the sliding surface portion 52b is continuously provided below the inwardly convex portion 52a.

FIG. 2 shows how the unused inner container 10 shown in FIG. 1 is attached to the outer container 20. Here, the outer container 20 includes a bottomed tubular inner container storage portion 21 capable of accommodating the inner container 10. That is, the inner container storage portion 21 has a side wall portion 23 having an opening 22 at one end thereof, and a bottom wall portion 24 that closes the other end of the side wall portion 23. A small-diameter mouth portion 26 having a male screw portion 25 on the outer peripheral surface is provided on the upper portion of the side wall portion 23. Further, a vertical rib-shaped support portion 27 projecting inward in the radial direction is provided on the inner peripheral surface of the side wall portion 23. In the present embodiment, a plurality of support portions 27 are formed at intervals in the circumferential direction of the side wall portion 23. On the outer peripheral surface of the tip end portion (tip portion of the mouth portion 26) of the side wall portion 23, an inclined surface portion 23a that is inclined inward in the radial direction toward the tip end (upward in FIG. 2) is provided.

The bottom wall portion 24 is provided with a fitted portion 28 corresponding to the fitting portion 17. The fitted portion 28 projects axially from the upper surface of the bottom wall portion 24, and a bottom wall opening 29 is formed inside the fitted portion 28. By fitting the outer peripheral surface of the fitting cylinder portion 17 to the inner peripheral surface of the fitted portion 28, the inner container 10 is detachably held with respect to the outer container 20. The fitting portion 17 and the fitted portion 28 are not indispensable, and their shapes can be changed.

When the unused inner container 10 is attached to the outer container 20, as shown in FIG. 2, the inner container 10 to which the cap 50 is attached is attached to the bottom wall portion of the opening 22 of the outer container 20. Insert from the 14 side. When the contents accommodating portion 11 is inserted into the bottom wall portion 14 and the lower portion of the peripheral wall portion 13 inside the side wall portion 23 of the outer container 20, the sliding surface portion 52b provided on the outer wall portion 52 of the cap 50 becomes a side wall. It abuts on the upper end of the portion 23. In the present embodiment, since the inclined surface portion 23a is provided at the upper end portion of the side wall portion 23, the sliding surface portion 52b slides with respect to the inclined surface portion 23a, so that the cap 50 with respect to the central axis of the outer container 20. Is guided so that the central axes of are aligned. Therefore, the inner container 10 to which the cap 50 is attached and the outer container 20 can be easily positioned. Then, when the cap 50 is further pushed toward the outer container 20, the sliding surface portion 52b slides with respect to the upper end portion (inclined surface portion 23a in this example) of the side wall portion 23, and the outer wall portion 52 gradually moves in the radial direction. It transforms outward. In the present embodiment, the upper wall portion 51e of the cap 50 constitutes the pressing portion, and by pushing the upper wall portion 51e, the cap 50 can be easily pushed toward the outer container 20. Further, in the process of inserting the inner container 10 to which the cap 50 is attached into the outer container 20, the sealing cylinder portion 51b is deformed inward in the radial direction by pushing the upper wall portion 51e. Has been done. That is, when the upper wall portion 51e is pressed and moves downward, the sealing cylinder portion 51b is pulled inward in the radial direction via the lower annular wall 51c. Here, when the inner container 10 to which the cap 50 is attached is pushed into the outer container 20, the timing at which the outer wall portion 52 is deformed radially outward and the timing at which the sealing cylinder portion 51b is deformed radially inward are defined. , Whichever comes first, and the two timings may be simultaneous.

Then, when the cap 50 is pushed down to a predetermined position as shown in FIG. 2, the undercut engagement between the outward convex portion 15 and the inward convex portion 52a is released, and the content accommodating portion 11 is released from the cap 50. Comes out and falls inside the outer container 20 due to gravity to be supported.

In the present embodiment, as shown in FIG. 2, the fitting portion 17 is stopped in a state where the fitting portion 17 is halfway inside the fitted portion 28. After that, by pressing the peripheral wall portion 13 of the inner container 10 downward, the inner container 10 can be pushed to a predetermined position shown in FIG. In this way, the attachment of the inner container 10 to the outer container 20 is completed. After that, as shown in FIG. 4, the opening 12 can be closed by screwing the outer lid 40 to the mouth 26 of the outer container 20, and the deterioration of the quality of the content S can be suppressed. From the state shown in FIG. 2, instead of the operation of pushing the peripheral wall portion 13 of the inner container 10 downward, the inner container 10 may be pushed by attaching the outer lid 40. Further, when taking out the content S, the outer lid 40 is removed from the outer container 20 and used. Further, the inner container 10 can be easily removed from the outer container 20 by pushing up the bottom wall portion 14 of the inner container 10 through the bottom wall opening 29 from below the outer container 20.

Here, as shown in FIG. 4, the outer lid 40 includes a cylindrical outer cylinder portion 41 and a top wall portion 42 that closes the upper end portion of the outer cylinder portion 41. On the inner peripheral surface of the outer cylinder portion 41, a female screw portion 43 screwing with the male screw portion 25 described above is provided. A disc-shaped packing 44 is attached to the lower surface of the top wall portion 42, and the upper surface of the peripheral wall portion 13 (thick wall portion 16) of the inner container 10 and the packing 44 are in close contact with each other to accommodate the contents. The part 11 is sealed. In this embodiment, the packing 44 is assembled by sticking, but the present invention is not limited to this, and the packing 44 is assembled by providing a convex portion on the inner peripheral surface of the outer cylinder portion 41 of the outer lid 40 and overcoming it. As long as the packing 44 is assembled to such an extent that the packing 44 does not fall off, the assembling method can be appropriately selected.

As described above, the capped inner container 1 of the present embodiment is configured such that the cap 50 covers most of the inner container 10 from the outside. Specifically, the opening 12 of the inner container 10 is covered by the top wall portion 51 of the cap 50, and the peripheral wall portion 13 is surrounded by the outer wall portion 52 from the outside. Further, since the outward convex portion 15 and the inward convex portion 52a that engage with the undercut are arranged inside the outer wall portion 52, it is difficult to see from the outside. With such a configuration, the cap 50 and the inner container 10 of the inner container 1 with a cap cannot be easily removed unless an empty outer container 20 is used. Therefore, it is possible to prevent unauthorized use of the inner container 10 in an unused state. Further, in order to prevent unauthorized use, the structure does not require any member other than the inner container 10 and the cap 50, so that the number of parts is small and the structure is simple. Further, the cap 50 can be removed from the inner container 10 and the inner container 10 can be arranged in the outer container 20 only by pushing the capped inner container 1 into the empty outer container 20. That is, the cap 50 can be removed and the inner container 10 can be arranged in the outer container 20 at the same time by a simple operation.

In the mounted state in which the cap 50 is attached to the inner container 10, the outer wall portion 52 of the cap 50 is preferably configured to cover more than half of the peripheral wall portion 13 of the inner container 10 in the axial direction. According to this, since the cap 50 is more difficult to remove from the inner container 10, the effect of preventing unauthorized use can be enhanced. From such a viewpoint, it is more preferable that the outer wall portion 52 extends to the vicinity of the lower end portion of the peripheral wall portion 13 in the mounted state. Further, it is preferable that the bottom wall portion 14 of the inner container 10 is exposed below the outer wall portion 52 of the cap 50 in the mounted state, and according to this, the inner container 1 with a cap is attached to the outer container 20. Since the bottom wall portion 14 can be visually recognized from the outside when it is inserted, the alignment becomes easy.

Further, by providing the inclined surface portion 23a on the side wall portion 23 of the outer container 20, the inner container 10 can be more smoothly attached to the outer container 20. That is, the sliding surface portion 52b slides with respect to the inclined surface portion 23a, so that the outer wall portion 52 of the cap 50 can be deformed more smoothly in the radial direction and is less likely to be caught at the time of insertion. Further, since the sliding surface portion 52b slides with respect to the inclined surface portion 23a, the central axis of the cap 50 is guided to coincide with the central axis of the outer container 20, so that the cap 50 is attached. The positioning of the vessel 10 and the outer container 20 becomes easy.

Further, the sliding surface portion 52b is preferably provided near the tip of the outer wall portion 52, and according to this, the sliding surface portion 52b is visually recognized when sliding the sliding surface portion 52b with respect to the side wall portion 23 of the outer container 20. Easy and easy to align. Further, since the sliding surface portion 52b is provided near the tip of the outer wall portion 52, the sliding surface portion 52b is connected to the top wall portion 51 (the upper end of the outer wall portion 52) which is a fulcrum for deformation of the outer wall portion 52. Since the distance to the outer wall portion 52 is increased, the outer wall portion 52 can be easily deformed, and the force required for pushing the inner container 1 with a cap into the outer container 20 can be reduced.

Further, in the present embodiment, the sealing cylinder portion 51b comes into contact with the inner peripheral surface of the peripheral wall portion 13 over the entire circumference, so that the airtightness of the cap 50 can be improved. Further, when the sealing cylinder portion 51b comes into contact with the inner peripheral surface of the peripheral wall portion 13, the relative positional deviation between the peripheral wall portion 13 and the top wall portion 51 is prevented, the effect of preventing the cap 50 from falling off, and the cap 50. It is possible to enhance the effect of preventing unauthorized opening. Further, in the process of inserting the inner container 10 to which the cap 50 is attached into the outer container 20, the sealing cylinder portion 51b is configured to be deformed inward in the radial direction by pushing the upper wall portion 51e. As a result, the inner container 10 can be easily detached from the cap 50, and the accuracy of mounting on the outer container 20 can be improved.

Hereinafter, other embodiments of the present invention will be described. The parts having the same basic functions as those of the above-described embodiment are designated by the same reference numerals in the drawings, and the description thereof will be omitted.

FIG. 5 shows an inner container 2 with a cap according to another embodiment of the present invention. The inner container 2 with a cap includes an inner container 10 and a cap 150. The inner container 10 has the same configuration as the inner container 10 of the previous embodiment shown in FIG.

The cap 150 includes a top wall portion 51 and an outer wall portion 152. The structure of the top wall portion 51 is the same as that of the cap 50 of the previous embodiment shown in FIG. The cap 150 is formed with a notch portion 152c extending in the axial direction from the upper end portion of the outer wall portion 152 and penetrating the outer wall portion 152. In this example, the cutout portions 152c are evenly arranged at 6 locations in the circumferential direction, but the present invention is not limited to this, and may be less than 6 locations, 7 or more locations may be provided, and the positions are also particularly limited. Not done. Further, an inwardly convex portion 152a as an engaged portion provided on the inner peripheral surface of the outer wall portion 152 of the cap 150 is provided at the lower end portion of the notch portion 152c. More specifically, the engaging surface of the inwardly projecting portion 152a with the outwardly projecting portion 15 is continuous with the end surface 152d (the surface facing upward) formed at the lower end of the notch portion 152c. The operation when the inner container 10 in the inner container 2 with a cap is attached to the outer container 20 is the same as that in the previous embodiment.

Even in the inner container 2 with a cap of the present embodiment, it is possible to prevent unauthorized use of the inner container 10 in an unused state. In addition, since the number of parts is small and the structure is simple, manufacturing is easy. Further, the cap 150 can be removed and the inner container 10 can be arranged in the outer container 20 at the same time by a simple operation of inserting and pushing the capped inner container 2 into the empty outer container 20.

Further, in the inner container 2 with a cap of the present embodiment, since the inwardly convex portion 152a as the engaged portion is provided at the end of the notch portion 152c, the divided mold can be used. By the injection molding used, the engagement surface of the inward convex portion 152a with the outward convex portion 15 can be formed as a surface perpendicular to the axis C. As a result, the undercut engagement between the outward convex portion 15 and the inward convex portion 152a becomes strong, so that the effect of preventing the cap 150 from falling off and the effect of preventing the cap 150 from being opened illegally can be enhanced.

Although described above based on the illustrated examples, the present invention is not limited to the above-described embodiment, and can be appropriately modified within the scope of the claims. For example, in the above embodiment, the engaging portion and the engaged portion to be undercut engaged are composed of an outward convex portion 15 and an inward convex portion 52a, but the present invention is not limited to this, and one of them is a concave portion. It may be configured. Further, in the present embodiment, the peripheral wall portion 13 and the outer wall portion 52 have a cylindrical shape having a circular cross section, but the present invention is not limited to this, and various shapes such as a polygonal cross section can be adopted. Further, the outer wall portion 52 of the cap 50 may be provided with a notch, a through hole, or the like extending upward from the tip thereof. Further, the outer container 20 and the outer lid 40 are not limited to screw engagement, and may be detachably undercut engaged.

1 Inner container with cap 2 Inner container with cap 10 Inner container 11 Contents accommodating part 12 Opening 13 Peripheral wall part 14 Bottom wall part 15 Outward convex part (engagement part)
15a Inclined surface 16 Thick wall 17 Fitting 20 Outer container 21 Inner container storage 22 Opening 23 Side wall 23a Inclined surface 24 Bottom wall 25 Male thread 26 Mouth 27 Support 28 Fitted 29 Bottom wall opening 40 Outer lid 41 Outer cylinder part 42 Top wall part 43 Female thread part 44 Packing 50 Cap 51 Top wall part 51a Circular wall part 51b Sealing cylinder part 51c Lower annular wall 51d Inner cylinder part 51e Upper wall part (pressing part)
51f Vertical rib 52 Outer wall part 52a Inwardly convex part (engaged part)
52b Sliding surface part 150 Cap 152 Outer wall part 152a Inwardly convex part (engaged part)
152b Sliding surface part 152c Notch part 152d End surface C Axis P Double container S Contents

Claims (7)

For refilling, the inner container is arranged inside the bottomed tubular outer container to form a double container, and the cap is attached to the inner container filled with contents and unused. An inner container with a cap
The inner container includes a tubular peripheral wall portion having an opening at one end and a bottom wall portion that closes the other end of the peripheral wall portion.
The cap includes a top wall portion that closes the opening when mounted on the inner container, and a tubular outer wall portion that is connected to the top wall portion and surrounds the peripheral wall portion from the outside.
On the inner peripheral surface of the outer wall portion, an engaged portion that undercuts and engages with an engaging portion provided on the outer peripheral surface of the peripheral wall portion, and the tip side of the outer wall portion with respect to the engaged portion. A sliding surface portion that inclines outward in the radial direction toward the tip is provided.
The top wall portion has a sealing cylinder portion that abuts on the inner peripheral surface of the peripheral wall portion in the mounted state, and a pressing portion provided radially inside the sealing cylinder portion.
The pressing portion has a vertical rib that hangs down from the lower surface.
In the process of inserting the inner container to which the cap is attached from the bottom wall side into the inside of the outer container, the sliding surface portion slides with respect to the side wall portion of the outer container, and the outer wall portion By deforming outward in the radial direction, the undercut engagement of the engaged portion with respect to the engaging portion is released, the inner container is configured to be disengaged from the cap , and the cap is attached. It is characterized in that the sealing cylinder portion is configured to be deformed inward in the radial direction by pushing the pressing portion in the process of inserting the inner container into the outer container. , Inner container with cap. The capped inner container according to claim 1, wherein the outer wall portion covers more than half of the peripheral wall portion in the axial direction in the mounted state. The capped inner container according to claim 1 or 2, wherein the sliding surface portion is provided near the tip end of the outer wall portion. The cap according to any one of claims 1 to 3 , wherein the inner container protrudes from the lower surface of the bottom wall portion and has a fitting portion that can be fitted to the fitted portion of the outer container. Inner container. Claims 1 to 1, wherein the engaging portion is an outward convex portion protruding from the outer peripheral surface of the peripheral wall portion, and the engaged portion is an inward convex portion protruding from the inner peripheral surface of the outer wall portion. The inner container with a cap according to any one of 4. The outer wall portion is formed with a notch portion extending in the axial direction from the top wall portion toward the tip of the outer wall portion.
The inner container with a cap according to claim 5 , wherein the engaged portion is provided on an end surface of the notch portion. For refilling, the inner container is arranged inside the bottomed tubular outer container to form a double container, and the cap is attached to the inner container filled with contents and unused. An inner container with a cap
The inner container includes a tubular peripheral wall portion having an opening at one end and a bottom wall portion that closes the other end of the peripheral wall portion.
The cap includes a top wall portion that closes the opening when mounted on the inner container, and a tubular outer wall portion that is connected to the top wall portion and surrounds the peripheral wall portion from the outside.
On the inner peripheral surface of the outer wall portion, an engaged portion that undercuts and engages with an engaging portion provided on the outer peripheral surface of the peripheral wall portion, and the tip side of the outer wall portion with respect to the engaged portion. A sliding surface portion that inclines outward in the radial direction toward the tip is provided.
The outer wall portion is formed with a notch portion extending in the axial direction from the top wall portion toward the tip of the outer wall portion.
The engaging portion is an outward convex portion protruding from the outer peripheral surface of the peripheral wall portion.
The engaged portion is an inwardly convex portion protruding from the inner peripheral surface of the outer wall portion, and is provided on the end surface of the notch portion.
In the process of inserting the inner container to which the cap is attached from the bottom wall side into the inside of the outer container, the sliding surface portion slides with respect to the side wall portion of the outer container, and the outer wall portion A cap characterized in that the undercut engagement of the engaged portion with respect to the engaging portion is released by deforming outward in the radial direction, and the inner container is disengaged from the cap. Inner container with.

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