JP7271071B2 - double container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a double container having an inner container and an outer container for refilling, and in particular, it is intended to facilitate exchange of the inner container and to improve the degree of freedom in external design of the container. .

2. Description of the Related Art Conventionally, a double container provided with an inner container for refilling the content and an outer container is known as a container for containing contents such as cream. In such a double container, when replacing the inner container, it is necessary to remove the inner container from the outer container. It is conceivable that a through-hole is provided for the purpose, or that a coin or the like is used to pry it open. Further, for example, in Patent Document 1, the inner container is provided with a pressing portion that can be rotated by a pressing operation, and the outer container is provided with a notch portion that exposes the pressing portion, and the pressing portion can be locked. It has a stop.

JP 2010-195484 A

However, when the above-described procedure for removing the inner container is adopted, a relatively large force is required to remove the inner container, and the appearance design of the container is affected by the provision of through holes and cutouts. There is a problem that restrictions are generated. In addition, it is desired to make the procedure for replacement easy to understand, especially for elderly people.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a double container that facilitates replacement of the inner container and improves the degree of freedom in designing the appearance of the container.

The present invention has been made in order to solve the above problems, and the double container of the present invention comprises a bottomed cylindrical inner container for containing contents, and a bottomed cylindrical container for exchangeably housing the inner container. and an annular rotating member attached to the upper part of the outer container so as to be rotatable about an axis,
A plurality of engaging projections are provided at different circumferential positions on the outer peripheral surface of the inner container,
a plurality of inclined guide surfaces corresponding to the plurality of engaging protrusions are formed on the inner peripheral wall of the rotating member;
The inner peripheral surface of the outer container is provided with a plurality of vertical ribs that respectively engage with the plurality of engaging protrusions to suppress rotation of the inner container with respect to the outer container,
As the rotating member is rotated to one side with respect to the outer container, the engaging projections move along the inclined guide surface while engaging with the vertical ribs, and at least one of the engaging projections moves along the inclined guide surface. It is characterized in that the inner container is supported by the rotating member in a raised state by riding on the upper surface of the rotating member.

In addition, in the double container of the present invention, the plurality of inclined guide surfaces have a first inclined guide surface and a second inclined guide surface,
It is preferable that the inclination angle of at least a part of the second inclined guide surface is different from the inclination angle of the first inclined guide surface.

Moreover, in the double container of the present invention, it is preferable that the angle of inclination of the upper portion of the second inclined guide surface is smaller than the angle of inclination of the lower portion of the second inclined guide surface.

Further, in the double container of the present invention, the inclination angle of the first inclined guide surface is constant throughout,
It is preferable that the inclination angle of the lower part of the second inclined guide surface is the same as the inclination angle of the first inclined guide surface.

Further, in the double container of the present invention, at least one of the engaging projections has a downward hook,
It is preferable that the hook portion engages with a support recess provided on the upper surface of the rotating member when the engaging projection rides on the upper surface of the rotating member.

Moreover, in the double container of the present invention, it is preferable that the plurality of engaging protrusions are all of the same shape and are evenly arranged in the circumferential direction of the inner container.

According to the present invention, when replacing the inner container, the inner container moves upward simply by rotating the rotating member provided on the outer container, so that the inner container can be easily removed with a relatively small force. can. Moreover, it is not necessary to provide the outer container with a through hole or a notch for pressing the inner container in order to remove the inner container.

Therefore, according to the present invention, it is possible to provide a double container that facilitates replacement of the inner container and improves the degree of freedom in designing the appearance of the container.

1 is a perspective view showing an exploded state of an inner container, an outer container, and a rotating member of a double container according to one embodiment of the present invention; FIG. FIG. 2 is a partially cross-sectional side view of the double container shown in FIG. 1 in which the rotating member and the inner container are attached to the outer container, showing the relationship between the engaging projection on one side, the vertical rib, and the inclined guide surface. FIG. 2 is a partially cross-sectional side view of the double container shown in FIG. 1 in which the rotating member and the inner container are attached to the outer container, showing the relationship between the engagement protrusion, the vertical rib, and the inclined guide surface on the other side. FIG. 3 is a partial cross-sectional side view showing the process of moving the inner container upward by rotating the rotating member from the state shown in FIG. show. FIG. 5 is a partial cross-sectional side view showing the relationship between the engaging protrusion, the vertical rib, and the inclined guide surface on the other side of the double container in the state shown in FIG. 4; FIG. 5 is a partial cross-sectional side view showing a state in which the rotating member is further rotated from the state shown in FIG. 4 and the inner container is supported by the rotating member; Shows the relationship of the planes. FIG. 7 is a partial cross-sectional side view showing the relationship between the engaging protrusion, the vertical rib, and the inclined guide surface on the other side of the double container in the state shown in FIG. 6; FIG. 10 is a partial cross-sectional side view showing the process of moving the inner container upward by rotating the rotating member in the double container shown for comparison. FIG. 9 is a partial cross-sectional side view showing a state in which the rotating member is further rotated in the double container shown in FIG. 8; FIG. 6 is a perspective view showing an exploded state of an inner container, an outer container, and a rotating member of a double container according to another embodiment of the present invention; FIG. 11 is a partially cross-sectional side view of the double container shown in FIG. 10 in which the rotating member and the inner container are attached to the outer container, showing the relationship between the engaging protrusions, vertical ribs, and inclined guide surfaces. 12 is a partial cross-sectional side view showing the process of moving the inner container upward from the state shown in FIG. 11 by rotating the rotating member; FIG. 13 is a partial cross-sectional side view showing a state in which the rotating member is further rotated from the state shown in FIG. 12 and the inner container is supported by the rotating member; FIG. FIG. 14 is a partial cross-sectional side view showing a state in which the rotating member is further rotated from the state shown in FIG. 13;

Hereinafter, embodiments of the present invention will be illustrated in detail with reference to the drawings. In this specification, the vertical direction means the direction along the axis O, which is the central axis of the inner container 10 and the outer container 20, and the upward direction means the opening 12 of the content storage portion 11 of the inner container 10. The side (for example, the upper side in FIG. 2) and the lower side mean the side (for example, the lower side in FIG. 2) on which the bottom wall portion 14 of the contents-accommodating section 11 is located.

As shown in FIGS. 1 and 2, a double container 1 according to an embodiment of the present invention includes an inner container 10 for refilling, an outer container 20 for housing the inner container 10 in a replaceable manner, and a rotating member 30. It has Although illustration is omitted, the double container 1 can be detachably attached to the mouth portion 25 of the outer container 20 and can include a lid body that covers the upper end opening 22 (the opening portion 12 of the inner container 10). The lid may have, for example, a cylindrical outer wall portion and a top wall portion that closes the upper end of the outer wall portion, and may have a female thread on the inner peripheral surface of the outer wall portion that engages with the male thread 25a. However, it is not limited to this.

The inner container 10 includes a bottomed cylindrical content-accommodating portion 11 centered on the axis O. As shown in FIG. That is, the content-accommodating portion 11 has an opening portion 12 formed in its upper portion, and also has a peripheral wall portion 13 and a bottom wall portion 14 . An annular outward convex portion 15 is provided on the upper portion of the outer peripheral surface of the peripheral wall portion 13 . An annular flange portion 16 extending radially outward is provided at the upper end portion of the peripheral wall portion 13 .

Engagement protrusions 17 are provided on the outer peripheral surface of the peripheral wall portion 13 . Although the engagement projection 17 in this example has a columnar shape, it is not limited to this, and may have other shapes such as a polygonal columnar shape. In this example, two engaging protrusions 17 are provided on the outer peripheral surface of the peripheral wall portion 13 at positions shifted by 180° in the circumferential direction around the axis O. As shown in FIG. Also, in this example, the two engaging projections 17 are arranged at the same vertical position on the peripheral wall portion 13 . In this example, the two engaging projections 17 have a common shape, but a plurality of engaging projections 17 having different shapes may be provided. Also, the engaging protrusions 17 may be provided at three or more locations in the circumferential direction. The inner container 10 may close the opening 12 of the content accommodating portion 11 with a cap, a film, or the like, for example, in order to maintain the quality of the content in an unused state. The inner container 10 is configured to be rotatable within a predetermined range with respect to the outer container 20 . In the state shown in FIG. 2 , the engaging projection 17 is arranged so as to penetrate the inner peripheral wall 31 of the rotating member 30 and its tip portion is located in the inner peripheral recessed portion 23 a of the outer container 20 . The engaging protrusions 17 are arranged in cutouts 38 and 39 provided in the inner peripheral wall 31 of the rotating member 30 .

As shown in FIGS. 2 to 7, the outer container 20 includes an inner container storage portion 21 having a cylindrical shape with a bottom centered on an axis O capable of storing the inner container 10. As shown in FIG. That is, the inner container housing portion 21 has an upper end opening 22 formed in its upper portion, and also has a side wall portion 23 and a bottom wall portion 24 . An upper portion of the side wall portion 23 is provided with a mouth portion 25 having a male thread 25a on its outer peripheral surface.

The mouth portion 25 is formed so that its outer diameter is smaller than the side wall portion 23 below the mouth portion 25 and its inner diameter is larger. An upper cylindrical portion 26 having a smaller outer diameter is provided at the upper end portion of the mouth portion 25, and an annular outward convex portion 26a is provided on the outer peripheral surface of the upper cylindrical portion 26. As shown in FIG.

The inner peripheral surface of the side wall portion 23 is provided with vertical ribs 27 that can suppress rotation of the inner container 10 with respect to the outer container 20 by engaging with the engaging projections 17 . The vertical rib 27 is a bar-shaped projection that extends linearly parallel to the axis O, and is provided in an annular inner peripheral recess 23 a provided in the upper portion of the inner peripheral surface of the side wall portion 23 . An upper end portion of one side surface 27a of the vertical rib 27 is provided with an inclined surface 28 extending obliquely with respect to (a plane perpendicular to) the axis O. As shown in FIG. The inclination direction of the inclined surface 28 is the same as that of the inclined guide surfaces 41 and 42 which will be described later. The other side surface 27b of the longitudinal rib 27 extends linearly parallel to the axis O. As shown in FIG. A side surface 27b of the vertical rib 27 extends from the lower end of the inner circumferential recess 23a to the upper end (the upper end of the side wall portion 23). In this example, two vertical ribs 27 protruding radially inward from the inner peripheral surface of the side wall portion 23 (the inner peripheral surface of the inner peripheral concave portion 23a) are arranged at intervals in the circumferential direction. More specifically, the two longitudinal ribs 27 are arranged around the axis O at positions shifted by 180°. Note that the vertical ribs 27 may be provided at three or more locations in the circumferential direction.

The rotating member 30 is attached to the upper end portion of the side wall portion 23 of the outer container 20 . The rotating member 30 is held to be rotatable about the axis O within at least a predetermined range with respect to the inner container 10 and the outer container 20 . Further, the rotating member 30 is configured so as not to move up and down with respect to the outer container 20 .

The rotating member 30 is formed in an annular shape (ring shape). Specifically, the rotating member 30 includes a cylindrical inner peripheral wall 31 , a cylindrical outer peripheral wall 33 positioned radially outside (outer peripheral side) of the inner peripheral wall 31 , and upper end portions of the inner peripheral wall 31 and the outer peripheral wall 33 . and an annular flange portion 32 connecting them. The inner peripheral wall 31 is arranged radially inward (inner peripheral side) of the mouth portion 25 and the upper end tubular portion 26, that is, radially inward of the vertical rib 27 and the inner peripheral recessed portion 23a. In addition, the inner peripheral wall 31 is arranged radially outside the peripheral wall portion 13 of the inner container 10 . The outer peripheral wall 33 is arranged radially outside the upper end tubular portion 26 . The flange portion 32 is arranged along the upper surface of the upper end tubular portion 26 .

An inward concave portion 35 that fits into the outward convex portion 15 of the inner container 10 is provided in the upper portion of the inner peripheral surface of the inner peripheral wall 31 . This makes it difficult for the inner container 10 to move upward with respect to the rotating member 30, so that unintended falling off of the inner container 10 can be suppressed.

Further, an inner peripheral surface of the outer peripheral wall 33 is provided with an inward convex portion 36 that fits into the outward convex portion 26a. As a result, it is possible to prevent the rotating member 30 from slipping upward from the upper cylindrical portion 26 of the outer container 20 .

The inner peripheral wall 31 is provided with engaged portions corresponding to the engaging protrusions 17 of the inner container 10 . In this example, the first and second engaged portions corresponding to the two engaging projections 17 are provided at circumferential positions shifted by 180° around the axis O. As shown in FIG.

As shown in FIGS. 2, 4, and 6, the inner peripheral wall 31 is provided with a first inclined guide surface 41 and a locking recess 43 that constitute a first engaged portion. The first inclined guide surface 41 and the locking recess 43 are formed by notches 38 penetrating through the inner peripheral wall 31 in the thickness direction (radial direction of the inner peripheral wall 31).

The first inclined guide surface 41 extends obliquely with respect to a plane perpendicular to the axis O. As shown in FIG. Further, the inclination angle θ1 of the first inclined guide surface 41 is constant throughout. That is, the first inclined guide surface 41 extends straight along the extending direction over the entire length. The "tilt angle" of each tilt guide surface 41, 42 means an angle with respect to a plane perpendicular to the axis O. As shown in FIG.

As shown in FIGS. 3, 5, and 7, the inner peripheral wall 31 is provided with a second inclined guide surface 42 and a locking recess 44 that constitute a second engaged portion. The second inclined guide surface 42 and the locking recess 44 are formed by notches 39 penetrating the inner peripheral wall 31 in the thickness direction.

The second inclined guide surface 42 extends obliquely with respect to a plane perpendicular to the axis O, and the angle of inclination differs between the lower portion 42a and the upper portion 42b. That is, the inclination angle θ3 of the upper portion 42b of the second inclined guide surface 42 is smaller than the inclination angle θ2 of the lower portion 42a of the second inclined guide surface 42 . In this example, the inclination angle θ2 of the lower portion 42a of the second inclined guide surface 42 is the same as the inclination angle θ1 of the first inclined guide surface 41, but it is not limited to this. For example, the inclination angle θ2 of the lower portion 42 a of the second inclined guide surface 42 may be different from the inclination angle θ1 of the first inclined guide surface 41 . Also, the inclined guide surfaces 41 and 42 are not limited to the illustrated example, and may be partially or wholly curved, for example.

As shown in FIGS. 2, 4 and 6, the locking recess 43 is arranged to face the first inclined guide surface 41 . When the engaging projection 17 of the inner container 10 is locked in the locking recess 43, upward movement of the inner container 10 with respect to the rotating member 30 is suppressed. As a result, upward movement of the inner container 10 relative to the outer container 20 is suppressed (because the rotating member 30 is suppressed from upward movement relative to the outer container 20). In addition, by locking the engaging projection 17 of the inner container 10 in the locking recess 43 , the rotation of the inner container 10 to one side with respect to the rotating member 30 (the engaging projection 17 moves away from the first inclined guide surface 41 ). rotation in the separating direction) is suppressed.

As shown in FIGS. 3, 5 and 7, the locking recess 44 is arranged to face the second inclined guide surface 42 . The function of the locking recess 44 is the same as that of the locking recess 43 . In this example, one engaging projection 17 of the inner container 10 is locked in the locking recess 43 and the other engaging projection 17 is locked in the locking recess 44 at the same time. With such a configuration, it is possible to more reliably prevent the inner container 10 from coming out unintended. Further, when the rotating member 30 is rotated to take out the inner container 10, one engaging projection 17 is pulled out of the locking recess 43 and the other engaging projection 17 is pulled out of the locking recess 44 at the same time. is configured to In this example, two engaging recesses 43 and 44 are provided, but only one of them may be provided. Further, the locking recesses 43 and 44 are not essential.

The lower surface of the flange portion 32 is provided with a sliding projection portion 32a that slides on the upper surface 26b of the upper end tubular portion 26 when the rotating member 30 is rotated. Further, the outer peripheral surface of the outer peripheral wall 33 is formed to have a polygonal shape (in this example, a regular 24-sided polygon) in plan view. This makes it easier to grip when rotating the rotating member 30 and less slippery than when the outer peripheral surface is a simple cylindrical shape. Although the shape of the outer peripheral surface of the outer peripheral wall 33 is not particularly limited, it is preferable that the outer peripheral wall 33 has a polygonal shape in a plan view for the above reasons.

A method for replacing the inner container 10 in the double container 1 of this embodiment will be described below. First, when the rotating member 30 is rotated to one side about the axis O with respect to the outer container 20 from the state (attached state) shown in FIGS. , and the rotation of the inner container 10 with respect to the outer container 20 is suppressed. By rotating the rotating member 30 with respect to the inner container 10, the two engaging projections 17 are pulled out of the engaging recesses 43 and 44, respectively, so that the inner container 10 can be moved upward.

When the rotating member 30 is further rotated, as shown in FIG. 4, one engaging projection 17 starts moving along the first inclined guide surface 41, and as shown in FIG. The projection 17 starts moving along the lower portion 42 a of the second inclined guide surface 42 . As a result, the inner container 10 gradually moves upward with respect to the rotating member 30 and the outer container 20 . When the inner container 10 rises with respect to the rotating member 30, the engagement between the outward convex portion 15 and the inward concave portion 35 is released, so that the inner container 10 can be easily moved upward.

When the rotating member 30 is further rotated, one engaging projection 17 continues to move upward along the first inclined guide surface 41 at a constant rate, and at the same time, the other engaging projection 17 moves upward. 2 It moves upward along the upper part 42b of the inclined guide surface 42 relatively gently.

When the rotating member 30 is further rotated, as shown in FIG. 6, one of the engaging projections 17 moves beyond the upper end of the first inclined guide surface 41 to the upper surface 30a (flange portion 32) of the rotating member 30. top surface) and supported by it. Until one engaging projection 17 rides on the top surface 30a of the rotating member 30, the other engaging projection 17 moves along the upper portion 42b of the second inclined guide surface 42 as shown in FIG. The state of engagement with the side surface 27b of the vertical rib 27 is maintained, and rotation of the inner container 10 with respect to the outer container 20 is suppressed. In this example, one of the engaging projections 17 as a whole rides on the upper surface 30a of the rotating member 30, but the present invention is not limited to this, and at least a part of the engaging projection 17 rides on the upper surface 30a for support. It is good if it is.

Here, for example, if the two inclined guide surfaces have the same shape, even if the inner container 10 rises until the engaging projection 17 reaches the upper end of the side surface 27b of the vertical rib 27, the inclined guide surfaces 41 and 42 will not move. The engaging projections 17 cannot get over (see FIG. 8), and the engagement of the engaging projections 17 with the longitudinal ribs 27 is all released at the same time, so that the engaging projections 17 move downward along the inclined guide surfaces 41 and 42. However, there is a possibility that the inner container 10 may descend (see FIG. 9).

On the other hand, in the present embodiment, the inclination angle θ3 of the upper portion 42b of the second inclined guide surface 42 is made smaller than the inclination angle θ1 of the first inclined guide surface 41, that is, by making the inclination gentler, the first inclination Even after the engaging protrusion 17 on the guide surface 41 side and the longitudinal rib 27 are disengaged, the engaging protrusion 17 on the second inclined guide surface 42 side is engaged with the longitudinal rib 27 . In the present embodiment, the engagement projection 17 on the side of the first inclined guide surface 41 rides on the upper surface 30a of the rotating member 30, and the inner container 10 is lifted and supported by the rotating member 30 until the inner container 10 is supported by the rotating member 30. The engaging protrusion 17 on the inclined guide surface 42 side engages with the vertical rib 27 to continue to suppress the rotation of the inner container 10 with respect to the outer container 20 . As described above, in the present embodiment, the engaging projection 17 on the side of the first inclined guide surface 41 is reliably mounted on the upper surface 30a of the rotating member 30, thereby causing the engaging projection 17 to move downward. can be suppressed. As a result, in the present embodiment, the raised state of the inner container 10 can be stably maintained. After the inner container 10 is lifted in this manner, the inner container 10 can be lifted upward and removed from the outer container 20 . In this example, only the engaging projection 17 on the side of the first inclined guide surface 41 is placed on the upper surface 30a of the rotating member 30, and in this state, the inner container 10 is inclined with respect to the outer container 20. .

When attaching a new inner container 10 to the outer container 20, the inner container 10 can be attached to the outer container 20 simply by aligning the two engaging projections 17 with the positions of the notches 38 and 39 and pushing them downward. can be done. As the inner container 10 is pushed in, the two engaging projections 17 of the inner container 10 are engaged with the first inclined guide surface 41 and the second inclined guide surface 42 of the rotating member 30, respectively, and the inner container 10 is removed. The rotating member 30 rotates in the direction opposite to the case. The replacement of the inner container 10 is completed by pushing the inner container 10 into the state shown in FIGS. When attaching the inner container 10 to the outer container 20 , the rotating member 30 may be rotated so that the engaging protrusions 17 are engaged with the engaging recesses 43 and 44 . In this example, since the upper end portion of the vertical rib 27 is provided with the inclined surface 28, even if the engaging projection 17 comes into contact with the vertical rib 27 when the inner container 10 is attached to the outer container 20, The inner container 10 can be smoothly pushed in by sliding the engaging projection 17 on the inclined surface 28 .

In this example, when the inner container 10 is attached to the outer container 20 , the outward convex portion 15 and the inward concave portion 35 are fitted to prevent the inner container 10 from coming off. Moreover, as a method for attaching a new inner container 10 , the inner container 10 may be moved downward by rotating the rotating member 30 without pushing the inner container 10 . That is, by rotating the rotating member 30 to the other side with respect to the outer container 20 in a state in which a new inner container 10 is placed in the inner container accommodating portion 21, the two engaging projections 17 are aligned with the inclined guide surfaces. It is also possible to slide downward along 41 and 42 and insert the inner container 10 to the state shown in FIGS.

As described above, the double container 1 according to the present embodiment includes a bottomed cylindrical inner container 10 for containing contents, and a bottomed cylindrical outer container 20 for exchangeably containing the inner container 10. , and an annular rotating member 30 attached to the upper portion of the outer container 20 so as to be rotatable about the axis, and a plurality of engaging protrusions 17 are provided on the outer peripheral surface of the inner container 10 at different circumferential positions. The inner peripheral wall 31 of the rotating member 30 is formed with a plurality of inclined guide surfaces 41 and 42 corresponding to the plurality of engaging protrusions 17, and the inner peripheral surface of the outer container 20 is formed with a plurality of engaging protrusions. A plurality of vertical ribs 27 are provided to restrain the rotation of the inner container 10 with respect to the outer container 20 by engaging with the mating projections 17 respectively. As a result, the engaging projections 17 move along the inclined guide surfaces 41 and 42 while engaging with the vertical ribs 27, and at least one engaging projection 17 rides on the upper surface 30a of the rotating member 30, thereby moving the inner container 10. is supported by the rotating member 30 in a raised state. With such a configuration, the inner container 10 can be moved upward and maintained in that state simply by rotating the rotating member 30 to one side. Therefore, when replacing the inner container 10, the inner container 10 can be easily removed with a relatively small force. After the used inner container 10 is removed, the inner container 10 can be attached simply by pushing a new inner container 10 into the inner container storage portion 21 of the outer container 20 or rotating the rotating member 30 . Since it is complete, a new inner container 10 can be installed easily. Thus, according to the present embodiment, the inner container 10 can be easily replaced when the contents are used up.

Moreover, it is not necessary to provide a through hole or a notch for pressing the inner container 10 in the bottom wall portion 24 of the outer container 20 or the like in order to remove the inner container 10 . Therefore, according to this embodiment, it is possible to facilitate replacement of the inner container 10 and improve the degree of freedom in designing the appearance of the container.

Further, in the double container 1 according to the present embodiment, the plurality of inclined guide surfaces 41 and 42 have the first inclined guide surface 41 and the second inclined guide surface 42, and at least one of the second inclined guide surfaces 42 The inclination angle θ3 of the portion (upper portion 42 b ) is made different from the inclination angle θ1 of the first inclined guide surface 41 . By adopting such a configuration, it is possible to change the rising ratio of the engaging projection 17 moving along the first inclined guide surface 41 and the engaging projection 17 moving along the second inclined guide surface 42. Either one of the engaging projections 17 can be preferentially run on the upper surface 30 a of the rotating member 30 . Specifically, in this example, the inclination angle θ3 of the upper portion 42 b of the second inclined guide surface 42 is set smaller than the inclination angle θ1 of the first inclined guide surface 41 . As a result, the engaging projection 17 on the second inclined guide surface 42 side is reliably engaged with the vertical rib 27 until the engaging projection 17 on the first inclined guide surface 41 side rides on and is supported by the upper surface 30 a of the rotating member 30 . Engagement can restrain the rotation of the inner container 10 . As a result, the raised state of the inner container 10 can be more reliably maintained. In this example, the inclination angle θ3 of the upper portion 42b of the second inclined guide surface 42 may be larger than the inclination angle θ1 of the first inclined guide surface 41. The engagement projection 17 on the side of the first inclined guide surface 41 engages with the vertical rib 27 until the mating projection 17 rides on and is supported by the upper surface 30 a of the rotating member 30 .

Further, in the double container 1 according to the present embodiment, the inclination angle θ1 of the first inclined guide surface 41 is constant over the entirety, and the inclination angle θ2 of the lower portion 42a of the second inclined guide surface 42 is equal to that of the first inclined guide surface. 41 is the same as the inclination angle θ1. With such a configuration, while the engaging projections 17 are moving along the lower portion 42a of the second inclined guide surface 42, the two engaging projections 17 rise at the same rate. The pivoting operation of 30 can be performed with a smaller force. As a result, the work of removing the inner container 10 becomes easier.

Moreover, in the double container 1 according to this embodiment, the plurality of engaging projections 17 are all of the same shape and are evenly arranged in the circumferential direction of the inner container 10 . With such a configuration, when attaching the inner container 10 to the outer container 20, it is not necessary to arrange the positions of the plurality of engaging projections 17 according to the positions of the specific inclined guide surfaces 41 and 42. That is, since the alignment when attaching the inner container 10 to the outer container 20 is facilitated, the replacement of the inner container 10 can be performed more easily.

Other embodiments of the present invention will be described below. Parts having the same basic functions as those of the embodiment described above are denoted by the same reference numerals in the drawings, and descriptions thereof are omitted.

In the double container 2 shown in FIGS. 10 to 14, the upper surface 30a of the rotating member 30 is provided with a support recess 45. As shown in FIG. In this example, two support recesses 45 respectively corresponding to a plurality of (two in this example) inclined guide surfaces 41 and 42 are formed on the upper surface 30a of the rotating member 30 adjacent to the upper ends of the inclined guide surfaces 41 and 42. is provided. In addition, in the present embodiment, at least one supporting concave portion 45 may be provided. In addition, in this example, the two inclined guide surfaces 41 and 42 have the same shape and are arranged evenly in the circumferential direction of the inner peripheral wall 31, but this is not the only option. A part of one of the inclined guide surfaces 41 and 42 may have a different inclination angle. In this example, the two inclined guide surfaces 41 and 42 have the same shape as the first inclined guide surface 41 of the previous embodiment, so the inclination angle is constant throughout.

In this embodiment, the engaging protrusion 17 has a downward hook portion 17a that can be engaged with the support recess 45. As shown in FIG. The engaging projection 17 of this example is composed of a hook portion 17a and a body portion 17b extending obliquely downward from the hook portion 17a. The hook portion 17 a is configured to engage with the support recess 45 of the rotating member 30 when the engaging protrusion 17 rides on the upper surface 30 a of the rotating member 30 . The hook portion 17 a of this example protrudes downward and is provided above the engaging projection 17 . In this example, the two engaging projections 17 have the same shape with the hook portion 17a, and the two engaging projections 17 are evenly arranged in the circumferential direction of the inner container 10. As long as one engaging projection 17 has a hook portion 17a, the shape, number, and position of the engaging projection 17 can be changed as appropriate.

In the double container 2, when removing the inner container 10, from the state shown in FIG. The body portions 17b of the protrusions 17 are engaged with the side surfaces 27b of the vertical ribs 27, respectively, so that the rotation of the inner container 10 with respect to the outer container 20 is suppressed. By rotating the rotating member 30 with respect to the inner container 10, the two engaging projections 17 are pulled out of the engaging recesses 43 and 44, respectively, so that the inner container 10 can be moved upward.

When the rotating member 30 is further rotated, as shown in FIG. 12, the two engaging protrusions 17 start to move along the inclined guide surfaces 41 and 42, respectively, and the inner container 10 moves toward the rotating member 30 and It gradually moves upward with respect to the outer container 20 . At this time, the hook portion 17a slides on the inclined guide surfaces 41 and 42 in this example.

When the rotating member 30 is further rotated, as shown in FIG. 13, the two engaging projections 17 continue to move upward along the inclined guide surfaces 41 and 42 at a constant rate, and the engaging projections The hook portion 17 a of 17 rides on the upper surface 30 a of the rotating member 30 and engages with the support concave portion 45 . When the engaging projection 17 moves along the inclined guide surfaces 41 , 42 , the body portion 17 b is engaged with the vertical rib 27 until the hook portion 17 a engages with the support recess 45 .

When the rotating member 30 is further rotated after the hook portion 17a is engaged with the support recess 45, the engaging projection 17 is disengaged from the vertical rib 27 as shown in FIG. Since the hook portion 17 a maintains the state of engagement with the support recess 45 , the inner container 10 is maintained in a state of being raised with respect to the outer container 20 . The body portion 17b of this example is arranged along the upper end portions of the inclined guide surfaces 41 and 42 in a state where the hook portion 17a is engaged with the support recess portion 45 .

As described above, in the double container 2 according to the present embodiment, at least one engaging projection 17 has a downward hook portion 17a, and when the engaging projection 17 rides on the upper surface 30a of the rotating member 30, Further, the hook portion 17a is configured to engage with a support recess 45 provided on the upper surface 30a of the rotating member 30. As shown in FIG. With such a configuration, the state in which the inner container 10 is raised with respect to the outer container 20 can be more stably maintained. Therefore, replacement of the inner container 10 becomes easier.

Although the above has been described based on the illustrated examples, the present invention is not limited to the above-described embodiments, and can be appropriately modified within the scope of the claims. For example, in the previous embodiment, the same number (two) of the engaging protrusions 17, the vertical ribs 27 and the inclined guide surfaces 41, 42 are provided. The number of guide surfaces 41 , 42 may be greater than the number of engaging projections 17 .

1, 2: Double container 10: Inner container 11: Contents accommodating part 12: Opening part 13: Peripheral wall part 14: Bottom wall part 15: Outward convex part 16: Flange part 17: Engagement projection 17a: Hook part 17b : Body portion 20: Outer container 21: Inner container storage portion 22: Upper end opening 23: Side wall portion 23a: Inner peripheral concave portion 24: Bottom wall portion 25: Mouth portion 25a: Male screw 26: Upper end cylindrical portion 26a: Outward convex portion 26b : Upper surface 27 of upper end cylinder: Vertical rib (rotation suppression rib)
27a: One side 27b: The other side (guide surface)
28: Inclined surface 30: Rotating member 31: Inner peripheral wall 32: Flange portion 32a: Sliding protrusion 33: Outer peripheral wall 35: Inward concave portion 36: Inward convex portion 38, 39: Notch 41: First inclined guide Surface 42: Second inclined guide surface 42a: Lower portion 42b of second inclined guide surface: Upper portions 43, 44 of second inclined guide surface: Locking recess 45: Support recess θ1: Angle θ2 of first inclined guide surface: Second Angle θ3 of the lower part of the inclined guide surface: Angle O of the upper part of the second inclined guide surface: Axis line (central axis line)

Claims (6)

A cylindrical inner container with a bottom for containing contents, a cylindrical outer container with a bottom for exchangeably containing the inner container, and an annular ring mounted on the upper part of the outer container so as to be rotatable about an axis. a rotating member;
A plurality of engaging projections are provided at different circumferential positions on the outer peripheral surface of the inner container,
a plurality of inclined guide surfaces corresponding to the plurality of engaging protrusions are formed on the inner peripheral wall of the rotating member;
The inner peripheral surface of the outer container is provided with a plurality of vertical ribs that respectively engage with the plurality of engaging protrusions to suppress rotation of the inner container with respect to the outer container,
As the rotating member is rotated to one side with respect to the outer container, the engaging projections move along the inclined guide surface while engaging with the vertical ribs, and at least one of the engaging projections moves along the inclined guide surface. A double container configured to be supported by the rotating member in a state in which the inner container is lifted by riding on the upper surface of the rotating member. The plurality of inclined guide surfaces have a first inclined guide surface and a second inclined guide surface,
2. The double container according to claim 1, wherein an inclination angle of at least a part of said second inclined guide surface is different from an inclination angle of said first inclined guide surface. 3. The double container according to claim 2, wherein the angle of inclination of the upper portion of the second inclined guide surface is smaller than the angle of inclination of the lower portion of the second inclined guide surface. The inclination angle of the first inclined guide surface is constant throughout,
4. The double container according to claim 3, wherein the inclination angle of the lower portion of the second inclined guide surface is the same as the inclination angle of the first inclined guide surface. at least one of the engaging projections has a downward hook;
2. The apparatus according to claim 1, wherein the hook portion engages with a support recess provided on the upper surface of the rotating member when the engaging projection rides on the upper surface of the rotating member. double container. The double container according to any one of claims 1 to 5, wherein the plurality of engaging protrusions are all of the same shape and are evenly arranged in the circumferential direction of the inner container.

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