JP2022131913A - replacement double container - Google Patents

Abstract

To stably fix an inner container in an outer container.SOLUTION: There is provided a replacement double container 1, including: an outer container 2 having an attachment mouth portion 12; an inner container 3 housed in the outer container so as to be removable from an attachment mouth portion side; and a fixing ring 4 attached to the attachment mouth portion and fixing the inner container in the outer container. The inner container includes a flange portion 30 formed along an entire circumference of a mouth portion 20. The fixing ring includes: a ceiling wall 42 formed with an insertion hole 41 through which the mouth portion is inserted; an attachment tube 43 attached to the attachment mouth portion; and a locking piece 51 radially displaced between a locking position P2 that presses against the flange portion and a release position spaced apart from the flange portion. A restricting portion 60 is provided between the attachment tube and the locking piece, to restrict displacement of the locking piece toward the release position to position the locking piece at a locking position, when the fixing ring is attached to the attachment mouth portion and the inner container is positioned at a set position P1.SELECTED DRAWING: Figure 1

Description

The present invention relates to a replacement double container.

Conventionally, from the viewpoint of reducing environmental load, etc., the outer container housing the inner container (refill container) is replaced (refilled) with a new inner container after the contents stored in the inner container (refill container) have been used up. A replaceable double container that can be reused is known.

For example, Patent Literature 1 below describes an inner container that is a bottle-shaped container for containing contents, an outer container that is a container for removably accommodating the inner container, and an annular lid detachably attached to the outer container. Disclosed is a replacement double container comprising:
The annular lid has a tubular body portion that hangs down from the top wall, and a claw portion that engages with the lower end of an annular projection formed on the neck portion of the inner container is formed inside the tubular body portion. Accordingly, by engaging the claw portion of the annular lid with the lower end of the annular projection, the inner container can be attached to the annular lid so as to be suspended.

JP 2015-67332 A

However, in the replacement double container described in Patent Document 1, for some reason (for example, when receiving an external impact), the claw portion of the annular lid is separated from the lower end of the annular projection of the inner container, and the annular projection and the claw are separated. There is a possibility that the engagement with the part may be released unintentionally. In this case, there is a possibility that the inner container may drop downward from the outer container, making it impossible to stably fix the inner container in the outer container.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and an object thereof is to provide a replacement double container capable of stably fixing the inner container in the outer container.

(1) A replaceable double container according to the present invention comprises an outer container having an attachment opening, a content accommodated therein, and contents accommodated in the outer container so as to be removable from the attachment opening side. and a fixing ring that is attached to the attachment opening and fixes the inner container in the outer container, wherein the inner container is in the set position accommodated in the outer container, the The container includes a mouth portion arranged outside the mounting mouth portion in the axial direction of the container, and a flange portion projecting radially outward from the mouth portion and formed along the entire circumference of the mouth portion. The fixing ring includes a ceiling wall that surrounds the opening from the outside in the radial direction, and a ceiling wall that surrounds the opening from the outside in the radial direction. A mounting cylinder mounted to the mounting opening, a locking position that is combined with the top wall and pressed against the flange, and a release position spaced apart from the flange in a radial direction. and a lock piece that displaces to the position between the mounting tube and the lock piece, when the fixing ring is mounted on the mounting opening and the inner container is positioned at the set position, A regulating portion is provided for regulating displacement of the lock piece toward the release position to position the lock piece at the lock position.

According to the replacement double container according to the present invention, the inner container can be used as a so-called refill container, the inner container can be stably fixed in the outer container, and the inner container can be easily replaced. It can be carried out.
For example, when removing the inner container whose contents have been used up, the fixing ring is removed from the attachment opening. As a result, the restriction of the lock piece by the restricting portion can be released, and the displacement of the lock piece to the release position can be allowed. Therefore, the inner container can be removed from the fixing ring as if the mouth portion is pulled out from the insertion hole of the fixing ring, and the empty inner container can be discarded.

Next, when replacing with a new inner container containing the contents, the fixing ring is combined with the inner container so that the opening of the new inner container is inserted into the insertion hole. At this time, for example, the lock piece of the fixing ring may be displaced to the lock position, and the lock piece may be used to temporarily fix the inner container. Next, while inserting the inner container into the outer container from the mounting opening side, the mounting cylinder of the fixing ring is mounted on the mounting opening. As a result, the inner container can be positioned at the set position, and the lock piece can be positioned at the lock position by regulating the displacement of the lock piece using the regulating portion. Therefore, it is possible to maintain a state in which the lock piece is pressed against the flange portion of the inner container, and the lock piece can be used to stably hold the inner container. Therefore, even if an external impact or the like is applied, it is possible to prevent the inner container from moving unintentionally in the axial direction of the container, thereby preventing the inner container from falling off from the outer container. As a result, the inner container can be stably fixed in the outer container, and even if the inner container is replaced, the contents can be used continuously and stably.

(2) A plurality of the flange portions may be formed at intervals along the axial direction of the container.

In this case, since a plurality of flanges are formed at the mouth of the inner container at intervals along the axial direction of the container, the locking piece is pressed against the flange more than when there is only one flange. It is easy to ensure a wide area in the axial direction of the container in which it is possible to Therefore, it becomes easier to fix the inner container.

(3) The plurality of flange portions include at least a first flange portion and a second flange portion located inside the first flange portion in the axial direction of the container, and the lock piece includes the second flange portion. You may press against the part.

In this case, the locking piece of the fixing ring is pressed against the second flange located on the body side of the inner container (inner side in the axial direction of the container) than the first flange. The lock piece can be easily hidden by using it, and the lock piece can be made difficult to see from the outside. Therefore, the appearance can be improved, and a replaceable double container having excellent design can be obtained.

(4) A portion of the top wall may surround the first flange portion from the outside in the radial direction and may be formed at the same position as the first flange portion in the axial direction of the container.

In this case, part of the top wall of the fixing ring surrounds the first flange portion from the outside in the radial direction and is formed at the same height position in the container axial direction as the first flange portion. The lock piece can be covered and hidden using the first flange portion and the top wall. Therefore, it is possible to make the lock pieces more difficult to see from the outside.

(5) The locking piece may have a locking projection that is locked to the flange portion from the inner side in the axial direction of the container when positioned at the locking position.

In this case, not only can the locking piece be pressed against the flange portion, but also the locking projection can be locked against the flange portion from the inner side in the axial direction of the container. It is possible to effectively prevent behavior such as coming off toward the inner side in the axial direction. Therefore, the inner container can be more securely fixed in the outer container.

According to the replaceable double container according to the present invention, the inner container can be stably fixed in the outer container.

BRIEF DESCRIPTION OF THE DRAWINGS It is a longitudinal half cross-sectional view which shows 1st Embodiment of the double container (replacement double container) which concerns on this invention. 1. It is a side view (partial cross section) of the state which mounted|wore the mouth part of the inner container shown in FIG. 1 with the temporary cap. FIG. 3 is a top view of the inner container shown in FIG. 2; FIG. 2 is a longitudinal half-sectional view of the fixing ring shown in FIG. 1; FIG. 5 is a longitudinal half-sectional view of the ring body shown in FIG. 4; FIG. 6 is a bottom view of the ring body shown in FIG. 5; 5 is a longitudinal half-sectional view of the pawl ring shown in FIG. 4; FIG. Figure 8 is a bottom view of the pawl ring shown in Figure 7; FIG. 5 is a longitudinal half-sectional view of the retaining ring shown in FIG. 4; 2 is a partially enlarged cross-sectional view showing a state in which a fixing ring is temporarily fixed to the inner container shown in FIG. 1; FIG. FIG. 5 is a diagram showing a state immediately before the fixing ring shown in FIG. 4 and the inner container shown in FIG. 2 are combined; 12 is a diagram showing a state in which the inner container combined with the fixing ring is inserted into the outer container after the state shown in FIG. 11; FIG. 13 is a diagram showing a state in which the inner container combined with the fixing ring is accommodated in the outer container after the state shown in FIG. 12; FIG. FIG. 14 is an enlarged cross-sectional view showing a state in which the locking piece of the fixing ring is positioned at the locking position in the state shown in FIG. 13; Fig. 2 is a longitudinal half-sectional view showing a second embodiment of the double container (replaceable double container) according to the present invention; FIG. 16 is a longitudinal half-sectional view of the fixing ring shown in FIG. 15; 17 is a longitudinal half-sectional view of the pawl ring shown in FIG. 16; FIG. Figure 18 is a bottom view of the pawl ring shown in Figure 17; FIG. 10 is a diagram showing a state in which the inner container combined with the fixing ring is inserted into the outer container; 20 is an enlarged cross-sectional view showing a state in which the lock piece of the fixing ring is positioned at the locking position by housing the inner container combined with the fixing ring in the outer container after the state shown in FIG. 19; FIG.

(First embodiment)
A first embodiment of a replaceable double container according to the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the double container (replacement double container) 1 of the present embodiment includes an outer container 2 having a cylindrical shape with a bottom, and a content (not shown) accommodated therein and taken out into the outer container 2. It comprises a cylindrical inner container 3 with a bottom that can be accommodated, and a fixing ring 4 that is detachably attached to the outer container 2 and fixes the inner container 3 in the outer container 2 .

The outer container 2, the inner container 3, and the fixing ring 4 are arranged with their central axes aligned on a common axis. In this embodiment, this common axis is referred to as container axis O, and the direction along container axis O from the outer bottom wall 10 of outer container 2 toward fixing ring 4 is referred to as upward (outside along container axis O direction). , the opposite direction is referred to as downward (inner side along the container axis O direction). Further, in a plan view seen from the direction of the container axis O, the direction intersecting with the container axis O is called the radial direction, and the direction rotating around the container axis O is called the circumferential direction.

The content contained in the inner container 3 may be, for example, a liquid cosmetic, but is not limited to a liquid. For example, the content may be solid, powdery, granular, or the like, and is not limited to uses such as cosmetics.

The outer container 2 includes an outer bottom wall 10, an outer peripheral wall 11 extending upward from the outer peripheral edge of the outer bottom wall 10 and radially surrounding the inner container 3, and further upward from the upper end of the outer peripheral wall 11. It is formed in a bottomed cylindrical shape having a mounting opening 12 extending toward the end.
However, the outer container 2 does not have to be formed in a cylindrical shape with a bottom. , slit holes or the like may be formed.

In this embodiment, since the outer container 2 is formed in a cylindrical shape with a bottom, a storage space is formed inside the outer container 2 that opens upward. The inner container 3 can be accommodated in this accommodation space. The outer container 2 is made of, for example, a synthetic resin material, a metal material, a glass material, or the like, although it is not limited to a specific material.

The outer peripheral wall 11 and the mounting opening 12 are formed, for example, in a cylindrical shape. However, the external shapes of the outer peripheral wall 11 and the mounting opening 12 do not need to be circular in plan view, and may be elliptical in plan view, polygonal such as quadrilateral, and the like. .
The mounting opening 12 has an inner diameter equal to the inner diameter of the outer peripheral wall 11 and an outer diameter smaller than the outer diameter of the outer peripheral wall 11 . A first threaded portion (for example, a male threaded portion) 13 is formed on the outer peripheral surface of the mounting mouth portion 12 .

The inner container 3 is housed in the outer container 2 so as to be removable from the mounting opening 12 side (upper side), and is held by the fixing ring 4 so as to be suspended. It is fixed at position P1. The inner container 3 is, for example, a bottle-shaped container made of synthetic resin, and includes a mouth portion 20, a shoulder portion 21, a body portion 22 and a bottom portion 23, which are connected in this order from top to bottom.

The inner container 3 is formed by various blow molding such as biaxial stretch blow molding using an injection molded preform or extrusion blow molding.
The synthetic resin material forming the inner container 3 is not limited to a specific material, but may be, for example, polyethylene, polypropylene, polyethylene terephthalate (PET), polyethylene naphthalate, amorphous polyester, or a blend material thereof. etc. However, the inner container 3 is not limited to being formed from one kind of synthetic resin, and the inner container 3 may be formed by laminating different kinds of synthetic resins.

For example, the inner container 3 may be formed by laminating two or more kinds of synthetic resins, ie, the main material resin and the barrier resin. In this case, as the main material resin, for example, resin such as PET described above can be used. In addition, the barrier resin has a barrier property that regulates the permeation of, for example, gases (oxygen, carbon dioxide, etc.), moisture such as humidity, light such as ultraviolet rays, and odor components such as scents from penetrating through the main resin. The resin is a resin that is appropriately selected according to the object to be barriered. For example, nylon-based resins, ethylene-vinyl alcohol copolymer resins, and the like can be used to exhibit gas barrier properties, and cyclic polyolefin-based resins, etc., can be used to exhibit moisture barrier properties.

The inner container 3 of the present embodiment functions as a replaceable replacement container (refill container), and at least the wall thickness (thickness) of the body portion 22 can be easily reduced and deformed by being crushed at the time of disposal. It is formed as thin as possible.
However, the thickness of the body portion 22 is such that the outer shape of the inner container 3 can be maintained when the inner container 3 is made to stand on its own while being filled with contents. In addition to this, in the present embodiment, the inner container 3 is self-supporting in a sealed state (for example, a state in which the content is filled and a temporary cap 8 described later is tightened), and the external shape is maintained, but the body The thickness is such that the trunk portion 22 is rigid enough to be easily deformed when the portion 22 is gripped.
Furthermore, by forming the body portion 22 of the inner container 3, which is a replacement container (refill container), to be thin as described above, the amount of synthetic resin required for forming the inner container 3 can be reduced, and the environmental load can be reduced. can contribute to In particular, since the inner container 3, which is a replacement container, is discarded after use, reducing the amount of synthetic resin in the inner container 3 leads to a reduction in the amount of waste, thereby contributing to a reduction in environmental load.

The outer diameter of the body portion 22 of the inner container 3 is formed smaller than the inner diameter of the outer peripheral wall 11 so as to fit inside the outer peripheral wall 11 with little resistance. The inner container 3 is housed in the outer container 2 by being held so as to be suspended by the fixing ring 4, as described above. In this embodiment, a gap is secured between the bottom portion 23 and the outer bottom wall 10 of the outer container 2 at the set position P1 where the inner container 3 is housed in the outer container 2 . However, the present invention is not limited to this case, and the bottom portion 23 and the outer bottom wall 10 may be configured to contact each other without a gap when the inner container 3 is positioned at the set position P1.

The shoulder portion 21 is arranged so as to be located inside the mounting opening 12 of the outer container 2 at the set position P1 where the inner container 3 is accommodated in the outer container 2 . The mouth portion 20 is formed to extend straight upward from the upper end portion of the shoulder portion 21 . Therefore, the opening 20 is formed to extend upward from the mounting opening 12 of the outer container 2 at the setting position P1 where the inner container 3 is accommodated in the outer container 2 .

An annular flange portion 30 is formed on the outer peripheral surface of the mouth portion 20 so as to protrude radially outward and is formed along the entire circumference of the mouth portion 20 .
Specifically, two (a plurality of) flange portions 30 are formed on the mouth portion 20 of the container body with a space therebetween in the vertical direction. Of the two flange portions 30, the flange portion 30 located on the upper end opening side of the mouth portion 20 functions as the first flange portion 31, and is located closer to the body portion 22 and the shoulder portion 21 than the first flange portion 31. The flange portion 30 functions as the second flange portion 32 .

In this embodiment, the diameter of the second flange portion 32 is larger than the diameter of the first flange portion 31 . As a result, the outer peripheral edge of the second flange portion 32 is located radially outside the outer peripheral edge of the first flange portion 31 . However, it is not limited to this case, and for example, the outer diameter of the first flange portion 31 and the outer diameter of the second flange portion 32 may be equal.
The vertical interval between the first flange portion 31 and the second flange portion 32 may be changed according to the size of the inner container 3, the length of the mouth portion 20, and the like.
Furthermore, as the first flange portion 31 and the second flange portion 32, it is not necessary that the width of the radially outwardly protruding portion is continuous over the entire circumference. It can be included. In other words, the flange portion 30 (the first flange portion 31 and the second flange portion 32 ) may be formed intermittently over the entire circumference of the mouth portion 20 .

As shown in FIGS. 2 and 3, a restricting rib 33 is formed between the first flange portion 31 and the second flange portion 32 . 2 and 3 show the inner container 3 in which the temporary cap 8 is attached to the mouth portion 20. As shown in FIG.
The restricting rib 33 functions to restrict relative rotation of the inner container 3 and the stationary ring 4 around the container axis O by cooperating with a restricting groove 47 formed on the stationary ring 4 side, which will be described later.

The restricting rib 33 is formed between the first flange portion 31 and the second flange portion 32 so as to protrude radially outward from the outer peripheral surface of the mouth portion 20 in a plate shape. The first flange portion 31 and the second flange portion 32 are formed so as to be integrally connected in the vertical direction via the restricting ribs 33 . Therefore, the displacement of the first flange portion 31 and the second flange portion 32 toward and away from each other in the vertical direction is restricted.

The restricting rib 33 extends radially to such an extent that the outer end reaches a position equivalent to the outer peripheral edge of the second flange portion 32 . Thereby, the restricting rib 33 is formed to extend radially outward from the first flange portion 31 .
Further, a plurality of restricting ribs 33 are formed at intervals in the circumferential direction. In the illustrated example, four restricting ribs 33 are formed at regular intervals in the circumferential direction, that is, at intervals of 90 degrees around the axis O of the container. However, the number of restricting ribs 33 is not limited to four, and may be changed as appropriate.

As shown in FIG. 1, an inner plug 6 having a discharge hole 5 is provided at the upper end opening of the mouth portion 20 of the inner container 3 configured as described above. As a result, the content inside the inner container 3 can be discharged to the outside through the discharge hole 5 . However, the inner plug 6 is not essential and may be omitted.
Further, a mounting threaded portion (e.g., male threaded portion) 34 for mounting other components is formed on the outer peripheral surface of a portion of the mouth portion 20 of the inner container 3 located above the first flange portion 31. . As a result, the main cap 7 constituting the double container 1 can be attached to the mouth portion 20 by screwing using the attachment screw portion 34 .

The cap 7 is formed in a truncated cylindrical shape and has the same outer shape as the outer peripheral wall 11 of the outer container 2 and the same diameter as the outer peripheral wall 11 . In the illustrated example, the main cap 7 is formed in a double-topped cylindrical shape, and is a cap with excellent cosmetic properties, for example. However, the cap 7 does not have to be double formed.

The inner container 3 configured as described above is a component that constitutes the double container 1, but also functions as a replaceable replacement container (refill container) as described above. Therefore, as shown in FIGS. 2 and 3, when the container is marketed as a replacement container, a capped cylindrical temporary cap 8 is attached to the mouth portion 20 of the inner container 3 instead of the main cap 7. ing.

(fixing ring)
As shown in FIG. 1, the fixing ring 4 is attached to the attachment opening 12 of the outer container 2, thereby fixing the inner container 3 accommodated in the outer container 2 and moving the inner container 3 to the set position. It plays a role of holding at P1. As shown in FIGS. 1 and 4, the fixed ring 4 includes a ring body 40, a claw ring 50 having radially displaceable lock pieces 51, and a retaining ring for restricting the radially outward displacement of the lock pieces 51. (regulating portion) 60, which are combined together.

As shown in FIGS. 1 and 4 to 6, the ring body 40 is formed with an insertion hole 41 through which the mouth portion 20 of the inner container 3 is vertically inserted. and a mounting cylinder that extends downward from the outer peripheral edge of the top wall 42, surrounds the mounting opening 12 of the outer container 2 from the outside in the radial direction, and is mounted to the mounting opening 12. 43 and are formed in a cylindrical shape.

The mounting cylinder 43 is formed in a cylindrical shape having an outer diameter equal to the outer diameter of the outer peripheral wall 11 of the outer container 2 and is arranged between the outer container 2 and the main cap 7 . In particular, the outer diameter of the outer container 2, the outer diameter of the fixing ring 4, and the outer diameter of the main cap 7 are all the same. Therefore, the outer shape of the entire double container 1 can be finished in a shape without a step (see FIG. 1), and it is possible to design a shape that looks simple and gives a sense of quality.

The mounting tube 43 is formed to protrude upward from the mounting opening 12 of the outer container 2 . A second threaded portion (for example, A female screw portion) 44 is formed. As a result, the mounting tube 43 can be screwed into the mounting opening 12 using the first threaded portion 13 and the second threaded portion 44, and the fixing ring 4 can be mounted to the outer container 2. It is possible.

An annular engaging projection 45 protruding radially inward is formed on the inner peripheral surface of the upper portion of the mounting cylinder 43 positioned above the portion where the second threaded portion 44 is formed. . The engagement projection 45 plays a role of suppressing the downward drop-off of the pressing ring 60, which will be described later.

The ceiling wall 42 is formed in a two-tiered shape with different heights in the vertical direction between the inner peripheral edge side where the insertion hole 41 is formed and the outer peripheral edge side where the mounting cylinder 43 is continuously provided. .
Specifically, the top wall 42 includes an annular first top wall 42a surrounding the first flange portion 31 of the inner container 3 from the radially outer side, and a connecting portion extending downward from the outer peripheral edge portion of the first top wall 42a. The tube 42 b extends radially outward from the lower end of the connecting tube 42 b and surrounds the second flange portion 32 of the inner container 3 from the radial outside. and an annular second ceiling wall 42c.

The first ceiling wall 42a is formed so as to surround the first flange portion 31 of the inner container 3 without a gap, and is positioned at the same height in the vertical direction with respect to the first flange portion 31. is formed to be In the illustrated example, the first ceiling wall 42a is formed so that the upper surface of the first flange portion 31 and the upper surface of the first ceiling wall 42a are flush with each other.
Therefore, the first ceiling wall 42a is arranged so as to come into contact with a portion of the restricting rib 33 that protrudes radially outward beyond the first flange portion 31 from above. The opening of the first ceiling wall 42a functions as an insertion hole 41 through which the opening 20 of the inner container 3 is inserted.

Therefore, with the temporary cap 8 attached to the mouth portion 20 of the inner container 3, the fixing ring 4 is placed over the inner container 3 so that the mouth portion 20 is inserted into the insertion hole 41. It is possible to combine with The fixing ring 4 combined with the inner container 3 is restricted from moving downward with respect to the inner container 3 by contacting the first ceiling wall 42 a with the restricting rib 33 , and is positioned with respect to the inner container 3 .

The connecting tube 42b is formed in a cylindrical shape surrounding the restricting rib 33 and the second flange portion 32 from the radially outer side. The second ceiling wall 42c surrounds the second flange portion 32 from the outside in the radial direction while leaving an annular gap between itself and the outer peripheral edge portion of the second flange portion 32. It is formed so as to have the same height position in the vertical direction. Further, the second ceiling wall 42c covers the mounting opening 12 of the outer container 2 from above with a gap between it and the upper opening edge of the mounting opening 12 of the outer container 2 .

On the first ceiling wall 42a of the ring body 40 configured as described above, a regulation cylinder 46 is formed with a regulation groove 47 into which the regulation rib 33 of the inner container 3 is fitted, and protrudes downward. formed.
The regulating cylinder 46 is formed in a cylindrical shape surrounding the regulating rib 33 formed on the inner container 3 from the outside in the radial direction, and has a regulating groove 47 formed on its inner peripheral surface. The restricting groove 47 is formed so as to be recessed radially outward from the inner peripheral surface of the restricting cylinder 46, and is formed in a vertically elongated slit shape opening downward. A plurality of restricting grooves 47 are formed at regular intervals in the circumferential direction, the number of restricting grooves 47 being greater than the number of restricting ribs 33 (four).

As a result, as shown in FIG. 1, by combining the fixing ring 4 with the inner container 3 from above, the portions of the restricting ribs 33 that protrude radially outward beyond the first flange portion 31 are formed into restricting grooves 47 . can be fitted inside. As a result, the inner container 3 and the fixing ring 4 can be combined in a state in which the restricting ribs 33 and the restricting grooves 47 are fitted to each other in the circumferential direction. Therefore, it is possible to restrict the relative rotation (co-rotation) between the inner container 3 and the fixing ring 4 about the container axis O by utilizing the engagement between the restricting ribs 33 and the restricting grooves 47 .

As shown in FIGS. 1, 4, 7 and 8, the pawl ring 50 is integrally assembled with the ring body 40 constructed as described above from below.
The pawl ring 50 surrounds the regulating cylinder 46 of the ring body 40 from the outside in the radial direction, and also surrounds the first ring 52 fitted between the regulating cylinder 46 and the connecting cylinder 42b and the mouth portion 20 of the inner container 3 diametrically. It has a second ring 53 that encloses from the direction outside and contacts the second ceiling wall 42c of the ring body 40 from below, and a plurality of connecting pieces 54 that connect the first ring 52 and the second ring 53. .

The first ring 52 is fitted between the restricting tube 46 and the connecting tube 42b while being in contact with the first ceiling wall 42a from below. The second ring 53 is arranged below the first ring 52 and is formed in a ring shape having an inner diameter and an outer diameter larger than those of the first ring 52 , and is spaced apart from the mounting cylinder 43 . 2 It is in contact with the top wall 42c from below. Thereby, an annular gap is formed between the second ring 53 and the mounting cylinder 43 .

The plurality of connecting pieces 54 are arranged at intervals in the circumferential direction, and have upper ends integrally formed with the first ring 52 and lower ends integrally formed with the second ring 53 . Thereby, the first ring 52 and the second ring 53 are integrally combined by a plurality of connecting pieces 54 intermittently arranged in the circumferential direction.
Each connecting piece 54 is formed in the shape of a plate piece extending in the circumferential direction. integrally formed. Thereby, the plurality of connecting pieces 54 integrally connect the first ring 52 and the second ring 53 while being in contact with the inner surface of the connecting cylinder 42 b of the ring body 40 .

Further, the first ring 52 has a lock position P2 (see FIG. 1) that presses against the second flange portion 32 from the radially outer side, and a release position P3 (see FIG. 7) that is spaced radially outward from the second flange portion 32. ) are formed integrally with each other.

The lock piece 51 is formed to hang down from the lower end surface of the first ring 52 and extends downward beyond the second flange portion 32 . In the illustrated example, the lock piece 51 has a length that does not project downward beyond the second ring 53 . Further, a plurality of lock pieces 51 are formed at intervals in the circumferential direction. Specifically, the plurality of locking pieces 51 are arranged so as to be positioned between the plurality of connecting pieces 54 . As a result, the lock pieces 51 and the connecting pieces 54 are alternately arranged in the circumferential direction.

The locking piece 51 configured in this manner is radially displaceable with the upper end portion, which is the connection portion with the first ring 52 , as a base point.
Note that the lock piece 51 is formed so as to be restored and displaced radially inward. That is, the lock piece 51 is configured to constantly displace toward the lock position P2 where it presses against the second flange portion 32 from the radially outer side.

The inner peripheral surface of the lock piece 51 protrudes radially inward and engages the outer peripheral edge of the second flange portion 32 from below when positioned at the lock position P2 as shown in FIG. A locking projection 55 is formed for stopping. As a result, the inner container 3 is supported from below by the locking protrusions 55 when the lock piece 51 is positioned at the lock position P2, and is prevented from moving downward (falling off) from the fixing ring 4.

As shown in FIGS. 1, 4 and 9, the holding ring 60 is arranged between the mounting cylinder 43 of the ring body 40 and the locking piece 51, the fixing ring 4 is mounted in the mounting opening 12, and When the inner container 3 is positioned at the set position P1 (see FIG. 1), it plays a role of restricting radially outward displacement of the lock piece 51 and positioning it at the lock position P2.

The holding ring 60 surrounds the second ring 53 of the pawl ring 50 from the outside in the radial direction, and includes a slide ring 61 that is vertically movable relative to the second ring 53 , and a slide ring 61 that extends radially inward from the lower end of the slide ring 61 . and an annular pressing projection 63 projecting upward from the inner peripheral edge of the pressing flange 62 .

The upper end portion of the slide ring 61 protrudes radially outward, and the inner circumference of the upper portion of the mounting tube 43 of the ring body 40 positioned above the portion where the second threaded portion 44 is formed. in contact with the surface. This allows the slide ring 61 to move vertically while contacting (sliding) the second ring 53 and the mounting cylinder 43 .
Since the ring-shaped engaging projection 45 is formed on the inner peripheral surface of the mounting tube 43 in the ring body 40 as described above, the slide ring 61 moves downward beyond the engaging projection 45. is suppressed (see FIG. 4). Therefore, the pressing ring 60 is combined with the ring main body 40 and the pawl ring 50 in a state in which it is prevented from falling downward.

Furthermore, when the fixing ring 4 is attached to the attachment opening 12 of the outer container 2 (see FIG. 1), the slide ring 61 is pushed up by the upper end opening edge of the attachment opening 12, and It is displaced so as to come into contact with the wall 42c from below.

The pressing flange 62 is arranged below the second ring 53 of the claw ring 50 and is formed to protrude radially inward from the second ring 53 . As shown in FIG. 1, the pressing flange 62 contacts the lower edge of the second ring 53 from below when the slide ring 61 contacts the second ceiling wall 42c of the ring body 40 from below.

The pressing protrusion 63 enters between the second ring 53 and the lock piece 51 from below when the slide ring 61 contacts the second ceiling wall 42c of the ring body 40 from below. As a result, it is possible to restrict radially outward displacement of the lock piece 51 by using the pressing projection 63 .
On the other hand, as shown in FIG. 4, the pressing projection 63 can be removed downward from between the second ring 53 and the lock piece 51 as the slide ring 61 moves downward. As a result, the pressing projection 63 can allow the radially outward displacement of the lock piece 51 .

(Function of replacement double container)
A case of using the double container 1 configured as described above will be described.
When using the contents, the main cap 7 is rotated around the container axis O from the state shown in FIG. 1 and removed from the inner container 3 . As a result, the content in the inner container 3 can be discharged to the outside through the discharge hole 5 by, for example, tilting the double container 1, and the content can be used.

The inner container 3 housed in the outer container 2 is combined with a fixing ring 4 attached to the outer container 2 so as not to be relatively rotatable about the container axis O. As shown in FIG. That is, the inner container 3 and the fixed ring 4 are combined in a state in which the restricting ribs 33 and the restricting grooves 47 are fitted to each other in the circumferential direction, so that they are not relatively rotatable. As a result, the attachment and detachment operation of the cap 7 can be properly performed without causing the inner container 3 to rotate together.

Next, a case where the content in the inner container 3 is used up and the used inner container 3 is replaced with a new inner container 3 containing the content will be described.
In this case, a new inner container 3, which is a replacement container shown in FIG. 2, is prepared. At the same time, or before or after this, the empty inner container 3 is removed from the outer container 2 . In this case, the fixing ring 4 is rotated around the container axis O with respect to the outer container 2 from the state shown in FIG. At this time, since the inner container 3 and the fixed ring 4 are combined so as not to be relatively rotatable about the container axis O as described above, the inner container 3 can be rotated together with the fixed ring 4 . Therefore, the fixing ring 4 and the inner container 3 can be removed from the outer container 2 together.

By removing the fixing ring 4 and the inner container 3 from the outer container 2, the push-up of the mounting opening 12 with respect to the holding ring 60 is released. Therefore, as shown in FIG. It can be slid downward by an operation or the like.
As a result, the restriction of the lock piece 51 by the pressing projection 63 can be released, so that the lock piece 51 can be displaced from the lock position P2 to the release position P3. Therefore, the opening 20 can be pulled out downward from the insertion hole 41 of the fixing ring 4 while displacing the locking piece 51 to the release position P3, and the fixing ring 4 and the inner container 3 can be separated in the vertical direction. can.

As a result, the empty inner container 3 can be removed from the fixing ring 4, and the inner container 3 can be discarded. Note that the lock piece 51 of the fixing ring 4 is restored and displaced to the lock position P2 after the inner container 3 is removed.

Next, as shown in FIG. 11, the fixing ring 4 is combined with the new inner container 3 to which the temporary cap 8 is attached. In this case, the inner container 3 is covered with the fixing ring 4 from above so that the opening 20 to which the temporary cap 8 is attached is inserted into the insertion hole 41 from below. At this time, as shown in FIG. 12, the fixing ring 4 can be moved with respect to the inner container 3 until the first ceiling wall 42a of the fixing ring 4 comes into contact with the regulation rib 33 of the inner container 3 from above. can.

In the above-described process, the lock piece 51 moves downward while overcoming the second flange, so that it moves radially outward once from the lock position P2, reaches the release position P3, and then returns to the lock position P2. . As a result, the locking piece 51 presses against the second flange portion 32 from the outside in the radial direction, and the locking protrusion 55 locks the second flange portion 32 from below, thus being temporarily fixed.

Next, as shown in FIG. 12, the inner container 3 with the fixing ring 4 temporarily fixed to the opening 20 is inserted into the outer container 2 from the mounting opening 12 side, and the fixing ring 4 is rotated around the container axis O. and screw it into the mounting opening 12 for mounting. As a result, as shown in FIGS. 13 and 14, the inner container 3 can be positioned at the setting position P1, and the holding ring 60 is pushed up by the upper opening edge of the mounting opening 12, and the second ceiling wall 42c is pushed up. slides upward to a position where it contacts from below.

Therefore, the pressing projection 63 can be inserted from below between the lock piece 51 and the second ring 53, restricting radially outward displacement of the lock piece 51 and positioning the lock piece 51 at the lock position P2. can do. Therefore, it is possible to maintain a state in which the locking piece 51 is pressed against the second flange portion 32 from the outside in the radial direction and the locking projection 55 is locked to the second flange from below. Therefore, it is possible to stably hold the inner container 3 by using the lock piece 51, and prevent the inner container 3 from detaching downward from the outer container 2 (falling off). can be effectively prevented.

Finally, the temporary cap 8 is removed from the opening 20 of the inner container 3 and replaced with the main cap 7. - 特許庁As a result, the replacement work of the inner container 3 can be completed, and the double container 1 can be used again as shown in FIG.
In particular, the fixing ring 4 is used to fix the inner container 3 inside the outer container 2, and the lock piece 51 is positioned at the lock position P2 by restricting radially outward displacement thereof. Even if an external impact or the like is applied to the double container 1, it is possible to prevent the inner container 3 from unintentionally moving up and down. In particular, it is possible to effectively prevent the inner container 3 from coming off the outer container 2 .
For these reasons, the inner container 3 can be stably fixed within the outer container 2, and even if the inner container 3 is replaced, the contents can be used continuously and stably.

As described above, according to the double container 1 of the present embodiment, the inner container 3 can be stably fixed inside the outer container 2 .
Furthermore, since the body portion 22 of the inner container 3 is formed to be thin, it can be crushed and deformed to reduce the volume at the time of disposal. Therefore, by folding or crushing the inner container 3 at the time of disposal, the inner container 3 can be made smaller, and the volume can be reduced, thereby reducing the environmental load.

Furthermore, since the two flange portions 30 (the first flange portion 31 and the second flange portion 32) are formed in the mouth portion 20 of the inner container 3 with an interval along the direction of the container axis O, the flange portions 30 Compared to the case where there is only one lock piece 51, it is easier to ensure a wider area in the direction of the container axis O and to assemble the fixing ring 4. As shown in FIG. Therefore, it becomes easier to fix the inner container 3 .

Furthermore, by using the first flange portion 31 and the second flange portion 32 formed in the mouth portion 20 of the inner container 3 to combine the inner container 3 and the fixing ring 4 and operate the fixing ring 4, the contents can be The device 3 can be replaced. Therefore, since the inner container 3 is formed thin, the inner container 3 can be replaced without gripping the body 22 even in a situation where the body 22 is likely to be deformed or crushed. . Therefore, the operability of replacement can be improved.

Furthermore, since the lock piece 51 of the fixing ring 4 is pressed against the second flange portion 32 located below the first flange portion 31, the lock piece 51 can be easily hidden using the first flange portion 31. The lock pieces 51 can be made invisible from the outside. In addition, the first ceiling wall 42a of the fixing ring 4 surrounds the first flange portion 31 from the outside in the radial direction, and the first flange portion 31 and the first ceiling wall 42a are arranged at the same height position. Therefore, not only the first flange portion 31 but also the first ceiling wall 42a can be used to cover and hide the lock piece 51. As shown in FIG.
For these reasons, the locking piece 51 can be made difficult to see from the outside, and the double container 1 can have excellent design.

(Second embodiment)
Next, a second embodiment of a replacement double container according to the present invention will be described with reference to the drawings. In addition, in the second embodiment, the same reference numerals are given to the same parts as the constituent elements in the first embodiment, and the description thereof will be omitted.

As shown in FIG. 15 , the double container (replacement double container) 70 of this embodiment includes an inner container 3 in which only one flange portion 30 is formed at the mouth portion 20 . 15 shows a state in which the temporary cap 8 is attached to the mouth portion 20. As shown in FIG.

The restricting rib 33 is formed integrally with the upper surface of the flange portion 30 so as to extend radially outward from the outer peripheral surface of the mouth portion 20 of the inner container 3 . The restricting rib 33 extends radially to such an extent that the outer end reaches a position equivalent to the outer peripheral edge of the flange portion 30 .
As in the first embodiment, a plurality of restricting ribs 33 are formed at intervals in the circumferential direction. Accordingly, four restricting ribs 33 are formed at regular intervals in the circumferential direction, that is, at intervals of 90 degrees around the container axis O. As shown in FIG. However, the number of restricting ribs 33 is not limited to four, and may be changed as appropriate.

(fixing ring)
As shown in FIGS. 15 and 16, the fixing ring 71 of this embodiment is configured by combining the ring main body 40 and the pawl ring 72, and does not include the pressing ring 60 of the first embodiment.
As shown in FIGS. 15 to 18, the pawl ring 72 surrounds the regulating cylinder 46 of the ring body 40 from the outside in the radial direction, and is fitted between the regulating cylinder 46 and the connecting cylinder 42b. , a plurality of fixed pieces 81 formed integrally with the pawl ring main body 80 and contacting the second top wall 42c of the ring main body 40 from below; and a plurality of lock pieces 82 formed integrally with the pawl ring main body 80. , is equipped with

The claw ring main body 80 is fitted between the regulating cylinder 46 and the connecting cylinder 42b while being in contact with the first ceiling wall 42a from below.
The plurality of fixed pieces 81 are arranged at intervals in the circumferential direction. Each fixed piece 81 extends downward from the lower end surface of the claw ring main body 80 and then extends radially outward. Accordingly, when the claw ring 72 is assembled with the ring body 40 from below, the plurality of fixing pieces 81 come into contact with the inner surface of the connecting tube 42b of the ring body 40 and the lower surface of the second ceiling wall 42c. do. Therefore, it is possible to combine the claw ring 72 with the ring main body 40 while maintaining the posture of the claw ring 72 stably.

In addition, when the fixing ring 71 is attached to the attachment opening 12 of the outer container 2 , the outer end of the fixing piece 81 is positioned vertically between the second ceiling wall 42 c and the upper opening edge of the attachment opening 12 . (See FIG. 15).

The plurality of lock pieces 82 are positioned between a lock position P2 (see FIG. 15) that presses against the flange portion 30 from the radially outer side and a release position P3 (see FIG. 16) that is spaced radially outwardly from the flange portion 30. can be displaced in the radial direction.
The lock piece 82 is formed to hang down from the lower end surface of the claw ring main body 80 and extends downward from the fixed piece 81 . Further, a plurality of lock pieces 82 are formed at intervals in the circumferential direction. Specifically, the plurality of lock pieces 82 are arranged so as to be positioned between the plurality of fixed pieces 81 . As a result, the lock pieces 82 and the fixed pieces 81 are arranged alternately in the circumferential direction.

The lock piece 82 configured in this manner is radially displaceable with the upper end portion, which is the connection portion with the pawl ring main body 80 , as a base point.
The lock piece 82 is formed so as to be restored and displaced radially inward. That is, the lock piece 82 is configured to constantly displace toward the lock position P2 where it presses against the flange portion 30 from the outside in the radial direction.

Further, as shown in FIG. 15, the inner peripheral surface of the lock piece 82 protrudes radially inward and engages the outer peripheral edge of the flange portion 30 from below when positioned at the lock position P2. A locking projection 83 is formed to stop. As a result, the inner container 3 is supported from below by the locking projections 83 when the lock piece 82 is positioned at the lock position P2, and is prevented from moving downward (falling off) from the fixing ring 71 .

Furthermore, in this embodiment, when the fixing ring 71 configured as described above is attached to the attachment opening 12 of the outer container 2, the attachment opening 12 is positioned between the lock piece 82 and the attachment tube 43 from below. configured to enter. As a result, the mounting opening 12 can be used to restrict radially outward displacement of the lock piece 82 and position it at the lock position P2. Therefore, in the present embodiment, when the fixing ring 71 is attached to the attachment opening 12 and the inner container 3 is positioned at the set position P1, the radially outward displacement of the lock piece 82 is regulated and the lock is locked. The mounting opening 12 can function as the restricting portion 85 positioned at the position P2.

(Function of replacement double container)
A case of using the double container 70 configured as described above will be described.
Even in the case of this embodiment, as in the first embodiment, the inner container 3 can be stably fixed within the outer container 2, and even if the inner container 3 is replaced, the contents can be maintained. can be used stably.

That is, when replacing the inner container 3, as shown in FIG. 19, the inner container 3 temporarily fixed by the fixing ring 71 to the opening 20 is inserted into the outer container 2 from the mounting opening 12 side, and the fixing ring is removed. 71 is rotated around the container axis O and screwed into the mounting opening 12 for mounting. As a result, the inner container 3 can be positioned at the set position P1, and the mounting opening 12 can be inserted between the lock piece 82 and the mounting tube 43 from below as shown in FIG. As a result, the lock piece 82 can be positioned at the lock position P2 by restricting radially outward displacement of the lock piece 82 using the mounting opening 12 . Therefore, the lock piece 82 can be pressed against the flange portion 30 from the outside in the radial direction, and the locking projection 83 can be kept locked to the flange portion 30 from below.

As a result, as shown in FIG. 15, the lock piece 82 can be used to stably hold the inner container 3, and the inner container 3 can be pulled out of the outer container 2 downward. Behavior (such as falling out) can be effectively prevented.
In particular, according to the double container 70 of the present embodiment, the pressing ring 60 in the first embodiment can be omitted, so that the configuration can be simplified and the cost can be reduced by reducing the number of parts. etc.

Although the embodiment of the present invention has been described above, the present embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. Modifications may be combined as appropriate. Furthermore, the present embodiment and its modifications include, for example, those that can be easily assumed by those skilled in the art, those that are substantially the same, and those within an equivalent range.

For example, in each of the above-described embodiments, the case where the present cap is attached to the mouth of the inner container has been described as an example, but the present cap is not limited to this case. A dispenser such as a spray may be attached. In this case, the replacement double container according to the present invention can be used as a double container with a dispenser.
Even in this case, it is possible to achieve the same effects as those of the respective embodiments in terms of replacement, except that the method of using the contents is different.
Furthermore, in this case, for example, a structure may be adopted in which the outside air is introduced into the inner container while the inner container is formed thin. Furthermore, by making the inner container thin, the inner container may be configured to be reduced in volume and deformed as the contents decrease. In this case, it is also possible to reduce the remaining amount.

Furthermore, in each of the above-described embodiments, by fixing the inner container in the outer container using the fixing ring provided with the locking piece, even if an external impact or the like is applied to the double container, for example, the double container may be unintentionally moved vertically. The main function and effect of being able to suppress the movement of the inner container and thereby effectively prevent the inner container from falling off from the outer container have been described. In addition to this, according to the present invention, for example, the following effects can also be achieved.
For example, in the first and second embodiments, when the double container is tilted and the contents are discharged onto the palm, the double container is lifted and used, and then the double container is lifted. When it is returned to its original position, it is assumed that the impact is transmitted from the outer bottom wall side of the outer container to the inner container. Specifically, for example, when the double container is placed on a mounting surface such as a table, it is assumed that the impact will be transmitted. Even in such a case, it is possible to effectively prevent the inner container from coming off.
Furthermore, when the contents are discharged while the double container is being swung out, it is assumed that the inner container is subjected to stress due to the up-and-down shaking operation. Even in such a case, it is possible to effectively prevent the inner container from coming off.
Furthermore, as described above, when a pump or the like having a push-down head is attached to the mouth of the inner container and used, the push-down force caused by the push-down operation of the push-down head acts on the inner container. is assumed. Even in such a case, it is possible to effectively prevent the inner container from coming off.

Furthermore, in the above-described first embodiment, the case where two flange portions (first flange portion and second flange portion) are formed with an interval in the vertical direction has been described as an example, but the number of flange portions is two. , and three or more may be formed at intervals in the vertical direction.

Furthermore, in each of the above-described embodiments, the case where the locking projection is formed on the locking piece has been described as an example, but the locking projection is not essential and may be omitted. Even in this case, the lock piece can be pressed against the outer peripheral surface of the flange portion, and the inner container can be fixed using the resistance (frictional force) or the like associated with the pressing.
Furthermore, in each of the above-described embodiments, the lock piece that is radially displaced against the flange portion (including the second flange portion) is pressed from the outside in the radial direction, but the lock piece is pressed against the flange portion. If possible, it is not necessary to press from the outside in the radial direction. For example, the lock piece may be displaced from the unlocked position toward the locked position, and at the locked position, the lock piece may be pressed obliquely downward (or from directly below) against the flange portion.

Furthermore, in each of the above-described embodiments, the case where the fixing ring is screwed into the mounting opening has been described as an example, but the mounting method is not limited to the screwing type. For example, the mounting tube may be attached to the mounting opening by undercut fitting.
In this case, for example, there is no need to combine the fixing ring and the inner container so that they cannot rotate relative to each other. Therefore, it is possible to omit the restricting ribs and restricting grooves that fit together in the circumferential direction, and it is possible to further reduce the number of parts and simplify the configuration.

P1... Set position P2... Lock position P3... Release position O... Container axis 1, 70... (Double container) replacement double container 2... Outer container 3... Inner container 4, 71... Fixing ring 12... Mounting opening 20 Mouth portion of inner container 30 Flange portion 31 First flange portion 32 Second flange portion 41 Insertion hole 42 Ceiling wall 43 Mounting cylinder 55, 83 Locking projection 60 Holding ring (restriction portion)
85... Regulating part

Claims (5)

an outer container having a mounting opening;
an inner container that contains contents therein and that is contained in the outer container so as to be removable from the mounting opening side;
a fixing ring that is attached to the attachment opening and fixes the inner container in the outer container;
The inner container includes, at a set position accommodated in the outer container, a mouth portion arranged outside the mounting mouth portion in the axial direction of the container, and protruding radially outward from the mouth portion. a flange formed along the entire circumference of the mouth,
The fixing ring is
a top wall having an insertion hole through which the mouth portion is inserted and surrounding the mouth portion from the outside in the radial direction;
a mounting cylinder connected to the ceiling wall, enclosing the mounting opening from the outside in the radial direction, and mounted to the mounting opening;
a lock piece that is combined with the ceiling wall and radially displaces between a lock position that presses against the flange and a release position that is spaced apart from the flange;
When the fixing ring is attached to the attachment opening and the inner container is positioned at the set position, the lock piece is positioned between the attachment tube and the lock piece toward the release position. A replacement double container, comprising: a restricting portion that restricts displacement and positions the lock piece at the lock position. In the replacement double container according to claim 1,
The replacement double container, wherein a plurality of the flange portions are formed at intervals along the axial direction of the container. In the replacement double container according to claim 2,
The plurality of flange portions includes at least a first flange portion and a second flange portion located inside the first flange portion in the container axial direction,
The replacement double container, wherein the lock piece presses against the second flange portion. In the replacement double container according to claim 3,
A part of the top wall surrounds the first flange portion from the outside in the radial direction, and is formed so as to be at the same position in the axial direction of the container as the first flange portion. In the replacement double container according to any one of claims 1 to 4,
The replacement double container, wherein the locking piece has a locking projection that is locked to the flange portion from the inner side in the container axial direction when the locking piece is positioned at the locking position.

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