JP2017030795A - Double container capable of maintaining deformed and volume-reduced state of outer container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container in which an outer container can be easily deformed and volume-reduced when discarding the container, and a deformed and volume-reduced state can be maintained.SOLUTION: A double container 1 comprises: a container body 4 comprising an inner container 2 and an outer container 3; and a discharge cap 5 which is attached to a mouth 4a of the container body, and has a cap body 20 on which a discharge hole 26 is formed. The discharge cap has a discharge valve 40 for switching communication and blockage between the discharge hole and inside of the container body, and one of the outer container and the cap body has an ambient air introduction hole 23 for communicating outside and a space between the inner container and the outer container, and an air valve 50 for closing the ambient air introduction hole so as to be opened freely, from inside of the one member, and an opening member 60 for opening the air valve through the ambient air introduction hole from outside of the one member, is connected in a manner of capable of being elastically displaced, to one member of the outer container and the cap body.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a double container.

A container main body including an inner container that contains the contents and is reduced in volume as the contents are reduced, and an outer container in which the inner container is installed, and a discharge hole for the contents that is attached to the mouth of the container main body There is known a double container including a discharge cap formed with (see, for example, Patent Document 1).
The discharge cap is formed with an outside air introduction hole communicating with the outside and between the inner container and the outer container, an air valve for freely closing the outside air introduction hole from the inside of the discharge cap, and a discharge A discharge valve that switches communication between the hole and the inside of the container main body and a cutoff is provided.

  In this double container, when the outer container is pressed inward in the radial direction, the air valve is closed, and communication between the outside and the inner container and the outer container is blocked. Further, in this state, the discharge valve is opened and the discharge hole communicates with the inside of the container body, so that the contents can be discharged from the discharge hole to the outside. When the inner container is reduced in volume as the contents are discharged, the pressure between the inner container and the outer container becomes negative, so the air valve opens. As a result, the outside air can be introduced between the inner container and the outer container through the outside air introduction hole, and the outer container can be restored and deformed, and the inner container can be maintained in a reduced volume deformed state. Become.

International Publication No. 2013/099696

  However, in the conventional double container, when the contents are used up and discarded, it is difficult to discharge the air between the outer container and the inner container to the outside through the air valve. Therefore, there is a problem that it is difficult to deform and volume and bulky.

  The present invention has been made in view of such circumstances, and an object of the present invention is to easily reduce the volume of the outer container at the time of disposal and to maintain the volume-reduced deformation state. It is to provide a double container that can.

(1) A double container according to the present invention includes a container main body including an inner container that accommodates contents and is reduced in volume as the contents are reduced, and an outer container in which the inner container is installed; A discharge cap having a cap body that is attached to the mouth of the container body and has a discharge hole for the contents, and the discharge cap communicates and blocks the discharge hole and the inside of the container body. A discharge valve for switching is provided, and either one of the outer container and the cap body is formed with an outside air introduction hole that communicates the outside and between the inner container and the outer container. In addition, an air valve for freely opening the outside air introduction hole from the inside of the one member is disposed, and the air valve is opened to the one member from the outside of the one member through the outside air introduction hole. The opening member is elastically displaceable Characterized in that it is connected.

According to the double container of the present invention, when the contents are used up, the inner container remains in a reduced volume deformation state, and the air valve closes the outside air introduction hole from the inside of one member. Yes. Therefore, when discarding after that, the air valve can be forcibly opened (opened) through the outside air introduction hole by elastically displacing the opening member. Thereby, an external air introduction hole can be opened.
Therefore, the volume of the outer container can be easily reduced and deformed by pressing the outer container inward in the radial direction with the air valve opened. Further, for example, by closing the discharge cap in a state where the outer container is deformed and reduced in volume, the outer container can be in a state where the outer container is deformed and reduced in volume. Thereby, the whole container main body including an outer container can be maintained in the crushed state, and a double container can be discarded without being bulked. Therefore, for example, it is possible to reduce processing costs and improve work efficiency in disposal work.

  When the elastic displacement of the opening member is released, the opening member can be restored and displaced by elastic force. For example, even if the opening member is accidentally operated before disposal, It can be easily returned to the state. Therefore, it is possible to cope with an erroneous operation and it is easy to use.

  (2) The opening member may include a pressing protrusion for pressing the air valve through the outside air introduction hole.

  In this case, the air valve can be forcibly pushed down by the push-down projection through the outside air introduction hole by elastically displacing the opening member so as to push it down. Thereby, an external air introduction hole can be opened more reliably.

(3) The cap body is formed in a top tube shape having a top wall portion in which the discharge hole is formed, and the outside air introduction hole and the opening member are formed in the top wall portion, and are formed in the outer container. May be formed with an intake hole that communicates between the outside air introduction hole and the inner container and the outer container.

In this case, since the outside air introduction hole and the opening member are formed in the top wall portion in which the discharge hole is formed, an external part such as a fingertip touches the opening member when the contents remain, for example. It is easy to prevent interference. Therefore, it is possible to prevent the opening member from being erroneously operated before disposal. However, even if the opening member is mistakenly operated before disposal, as described above, the opening member can be returned to the original state by releasing the operation of the opening member.
Even if the outside air introduction hole is formed in the top wall portion, the outside air can be appropriately introduced between the inner container and the outer container through the intake hole formed in the outer container, The same external air introduction performance as when the external air introduction hole is formed can be secured.

  According to the double container according to the present invention, the volume of the outer container can be easily reduced and deformed at the time of disposal, and the state in which the volume has been deformed and reduced can be maintained.

It is a longitudinal section showing a 1st embodiment of a double container concerning the present invention. It is a longitudinal cross-sectional view of the double container which shows the state which opened the cover part in the discharge cap and opened the discharge hole from the state shown in FIG. It is a top view of the double container shown in FIG. It is the longitudinal cross-sectional view which expanded the periphery of the pressing part shown in FIG. FIG. 5 is a top view of a pressing unit shown in FIG. 4. It is a longitudinal cross-sectional view of the double container which shows the state which pushed down the pressing part and opened the outside air introduction hole after using up the contents from the state shown in FIG. It is the longitudinal cross-sectional view which expanded the periphery of the pressing part shown in FIG. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the double container which concerns on this invention. It is a top view of the double container shown in FIG. FIG. 10 is an enlarged longitudinal sectional view of the periphery of the pressing portion shown in FIG. 9, showing a state in which the pressing portion is pushed down to open the outside air introduction hole.

(First embodiment)
Hereinafter, a first embodiment according to the present invention will be described with reference to the drawings. In each drawing used in the following description, the scale is appropriately changed to make each member a recognizable size.

  As shown in FIGS. 1 and 2, the double container 1 of the present embodiment is a highly flexible inner container that accommodates contents not shown and undergoes volume reduction deformation (squeezing deformation) as the contents decrease. A container main body 4 having an (inner layer) 2 and an outer container (outer layer) 3 in which the inner container 2 is housed, and a discharge cap 5 detachably attached to the mouth portion 4a of the container main body 4 are provided.

  In addition, the inner container 2 and the outer container 3 are arrange | positioned in the state in which each central axis was located on the common axis. A discharge cap 5 is arranged coaxially with the common shaft. In the present embodiment, this common axis is referred to as a container axis O, the discharge cap 5 side along the container axis O is referred to as the upper side, and the opposite side is referred to as the lower side. Further, in a plan view viewed from the container axis O direction, a direction orthogonal to the container axis O is referred to as a radial direction, and a direction around the container axis O is referred to as a circumferential direction.

The container body 4 is formed by blow molding and is a delamination type container (delami bottle) in which the inner container 2 is detachably laminated on the inner surface of the outer container 3.
As the blow molding, for example, a double (internal and external) laminated parison may be formed by extrusion molding or the like, and the container body 4 may be formed by blow molding this laminated parison (extrusion blow molding). Further, a preform for the outer container and a preform for the inner container are formed by injection molding or the like, and after these are combined in double (inner and outer), the container body 4 is formed by biaxial stretch blow molding. It doesn't matter.
The outer container preform is biaxially stretched and blow molded to form the outer container 3, the inner container preform is placed inside, and then the inner container preform is biaxially stretched and blow molded. By doing so, the container body 4 may be formed.

  The material of the inner container 2 and the outer container 3 is a resin material, and may be the same material or different materials as long as they are detachable combinations. Examples of the resin material include PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), nylon (polyamide), EVOH (ethylene-vinyl alcohol copolymer), and the like. Out of these resin materials, the outer container 3 and the inner container 2 are formed in a combination that can be peeled (not compatible).

The container body 4 is formed in a bottomed cylindrical shape in which a mouth portion 4a, a shoulder portion 4b, a trunk portion (not shown), and a bottom portion (not shown) are connected in order from the upper side. The shoulder 4b gradually increases in diameter from the upper side to the lower side. The trunk portion is formed, for example, in a circular shape in cross section.
The outer container 3 constituting the container body 4 can be squeezed and deformed, and the inner container 2 is deformed and deformed as the outer container 3 is squeezed. Therefore, at least a portion of the outer container 3 positioned in the trunk is elastically deformable toward the radially inner side (inner side of the container).

The mouth 4a of the container body 4 is formed to extend upward from the upper end opening of the shoulder 4b. The mouth 4a of the container body 4 is configured such that the mouth 2a of the inner container 2 and the mouth 3a of the outer container 3 are laminated.
An annular folded portion 2b protruding radially outward is formed at the upper end of the mouth portion 2a of the inner container 2, and the opening end of the mouth portion 3a of the outer container 3 is opened from the upper side using this folded portion 2b. It is blocking. Therefore, the mouth 3 a of the outer container 3 is closed by the inner container 2. In the mouth portion 3a of the outer container 3, an intake hole 6 is formed between the outer container 3 and the inner container 2 for introducing outside air via an outside air introduction hole 23 described later.

The discharge cap 5 includes an inner plug portion 10, a cap body 20, and a lid portion 30.
The inner plug portion 10 is housed in the housing tube portion 12, a base portion 11 disposed on the upper end opening of the mouth portion 4 a of the container body 4, a housing tube portion 12 penetrating the base portion 11 in the vertical direction. And a valve body portion 13.
In the illustrated example, the base portion 11 and the housing cylinder portion 12 are integrally formed, but may be formed separately.

  The base part 11 extends in an up-down direction, an outer base part 11a located on the upper end opening of the mouth part 4a of the container body 4, an inner base part 11b located radially inward of the outer base part 11a, and And a connecting cylinder portion 11c that connects the inner end portion of the base portion 11a and the outer end portion of the inner base portion 11b. The inner base portion 11b is located above the outer base portion 11a.

The outer base portion 11a is formed with a rising cylindrical portion 14 surrounding the connecting cylindrical portion 11c from the outside in the radial direction so as to protrude upward, and is fitted inside the mouth portion 4a of the container body 4 The fitting cylinder 15 that seals the mouth 4a of the container body 4 is formed so as to protrude downward.
The inner base portion 11b is formed with a flow hole 16 through which the contents are circulated at a position shifted in the radial direction with respect to the container axis O, and the housing cylinder portion 12 is formed.

The accommodating cylinder portion 12 is formed so as to protrude downward from a portion adjacent to the flow hole 16 in the inner base portion 11b. In the illustrated example, the accommodating cylinder portion 12 is displaced in the radial direction with respect to the container axis O, and a part thereof is integrated with the connecting cylinder portion 11c.
The inside of the storage cylinder portion 12 is a storage space for storing the remaining contents, and is open up and down. A reduced diameter portion (valve seat portion) 12 a that gradually decreases in diameter toward the lower end portion is formed in the lower portion of the housing cylinder portion 12. In addition, on the inner surface of the upper portion of the housing cylinder portion 12, a restriction projection 12b that restricts the valve body portion 13 from being pulled upward is formed so as to protrude radially inward.

In the example shown in the figure, the restricting protrusion 12b is formed in an annular shape over the entire circumference of the inner surface of the housing cylinder portion 12. However, the present invention is not limited to this case. For example, the regulation protrusion 12b may be formed so as to protrude in one place on the inner surface of the housing cylinder portion 12, or the protrusion may be formed in the circumferential direction of the inner surface. A plurality may be formed at intervals along the line.
In any case, the restriction protrusion 12b may be formed in any manner as long as the upward slip of the valve body portion 13 can be restricted. Furthermore, the regulation protrusion 12b is not essential and may not be provided. Even in this case, it is possible to regulate the upward withdrawal of the valve body 13 by using a discharge valve 40 described later.

The valve body portion 13 is accommodated in the accommodating cylinder portion 12 so as to be movable in the vertical direction, and is seated on the inner peripheral surface of the reduced diameter portion 12a so as to be separated upward. In the illustrated example, the valve body portion 13 is a so-called ball valve formed in a spherical shape.
The valve body 13 moves to the regulating projection 12b when the container body 4 is tilted or turned upside down, for example, when discharging the contents, and when the container body 4 is returned to the original upright posture, Or it moves to the reduced diameter part 12a side by the negative pressure produced by the restoring force of the inner container 2. As a result, the residual contents existing above the base portion 11 can be drawn into the accommodating cylinder portion 12, and dripping can be avoided by a so-called suck back effect.

  The valve body portion 13 may be made of either synthetic resin or metal. However, when the valve body portion 13 is made of metal, smooth movement due to its own weight is possible, so that the suck back effect can be further enhanced. it can.

In addition, when the valve body part 13 is made of a synthetic resin, all the members constituting the double container 1 can be made of a synthetic resin, and the cost can be reduced. The double container 1 can be discarded without performing the operation of separating the materials for different types of materials.
Further, when the valve body portion 13 is made of synthetic resin, the specific gravity with respect to the mass and contents can be reduced as compared with the case where the valve body portion 13 is made of metal. When the squeeze deformation of the container body 4 toward the radially inner side with respect to the outer container 3 is released in the state where the discharge posture is directed toward the outer diameter, the valve body portion 13 is quickly separated from the restricting projection 12b to reduce the diameter-reduced portion. It becomes easy to make it sit on the inner peripheral surface of 12a. Therefore, it is possible to suppress the outside air from entering the inner container 2 through the inside of the housing cylinder portion 12 by using the valve body portion 13.

As shown in FIGS. 2 and 3, the cap body 20 is connected to the outer cylinder part 21 screwed into the mouth part 4 a of the container body 4 and the upper end part of the outer cylinder part 21, and The top wall part 22 which covers the upper part of the part 4a is formed in the top cylinder shape provided.
With this cap body 20, the discharge cap 5 is detachably attached to the mouth 4 a of the container body 4. The cap body 20 is not limited to the case where the cap body 20 is screwed to the mouth portion 4a of the container body 4, and may be undercut fitted, for example.

The top wall portion 22 is formed with a step so that the central portion 22b is positioned above the outer portion 22a connected to the outer cylinder portion 21. An outside air introduction hole 23 is formed in a connection portion between the outer portion 22 a and the central portion 22 b in the top wall portion 22.
In the illustrated example, the outside air introduction hole 23 is formed in a circular arc shape in plan view extending along the circumferential direction. However, the present invention is not limited to this case. For example, a plurality of outside air introduction holes 23 may be formed at intervals in the circumferential direction.

A hanging cylinder part 24 and a discharge cylinder part 25 having an outer diameter smaller than that of the hanging cylinder part 24 are formed in the central portion 22 b of the top wall part 22.
The drooping cylinder part 24 is formed so as to protrude downward from a portion of the top wall part 22 located radially inward of the outside air introduction hole 23. The discharge cylinder portion 25 is formed at a position shifted in the radial direction with respect to the container axis O, and is formed so as to penetrate the top wall portion 22 up and down. This discharge cylinder part 25 can be communicated with the inside of the inner container 2 through the flow hole 16, and its inner peripheral surface gradually increases in diameter from the lower side toward the upper side. And the upper end part of the discharge cylinder part 25 is made into the discharge hole 26 which discharges the contents.

  As shown in FIG. 2, a discharge valve 40 and an outside air introduction valve (air valve) 50 are disposed between the inner plug portion 10 and the cap body 20 configured as described above.

  The discharge valve 40 is a valve that switches communication between the discharge hole 26 and the inside of the container body 4, and a valve body 41 that is detachably mounted on the upper surface of the inner base portion 11 b, a valve body 41, and an outside air introduction valve For example, a three-point valve including a plurality of (three) elastic arms 42 that integrally connect 50 cylindrical body portions 51 described later.

The valve body 41 is formed in a circular shape in plan view, for example, and closes the flow hole 16 formed in the inner base portion 11b so as to be freely opened.
The valve main body 41 does not completely close the upper opening of the housing cylinder portion 12. Therefore, the inside of the accommodation cylinder part 12 is always opened upward.

  The elastic arm 42 is formed, for example, so as to extend in the circumferential direction, so that an appropriate spring property is ensured, the inner end portion is connected to the outer edge portion of the valve body 41, and the outer end portion is a cylindrical body portion. 51 is connected. The elastic arm 42 is elastically deformed so as to move the valve main body 41 upward when the internal pressure of the inner container 2 rises due to squeeze deformation of the outer container 3, and the valve main body 41 of the inner base portion 11b is deformed. Separate from the top surface. Accordingly, when the outer container 3 is squeezed, the flow hole 16 is opened to allow the discharge hole 26 and the container body 4 to communicate with each other, and the contents can be circulated to the discharge hole 26 side. .

  The number of elastic arms 42 is not limited to three. Moreover, as the discharge valve 40, the flow hole 16 should just be open | released at the time of squeeze deformation of the outer container 3, and it is good also as valve structures other than the said structure.

  The outside air introduction valve 50 is fitted to the inside of the rising cylinder portion 14 formed at the lower end portion of the base portion 11 and is fitted to the inside of the hanging cylinder portion 24 formed at the top wall portion 22 at the upper end portion. A body 51 and an elastically deformable valve body 52 projecting annularly from the outer peripheral surface of the cylindrical body 51 toward the radially outer side and having an outer end 52a as a free end are provided.

As for the valve body 52, the outer end part 52a contact | abuts to the lower surface of the outer side part 22a in the top wall part 22 so that separation | separation is possible from the downward direction over the perimeter. Thereby, the outside air introduction valve 50 closes the outside air introduction hole 23 from the inside of the cap body 20 so as to be freely opened. That is, the valve body 52 functions as a check valve that allows the outside air to flow in through the outside air introduction hole 23 and restricts the outside air from flowing out through the outside air introduction hole 23.
Note that the outside air that has flowed in from the outside through the outside air introduction hole 23 flows between the inner container 2 and the outer container 3 through the intake holes 6 formed in the outer container 3 as indicated by arrows in FIG.

Since the cylindrical portion 51 of the outside air introduction valve 50 is fitted to the base portion 11 of the inner plug portion 10 and the top wall portion 22 of the cap body 20, the inner plug portion 10 and the cap body 20 are outside air. They are connected together via an introduction valve 50. Thereby, the inside plug part 10 and the cap main body 20 can be handled as one unit.
Moreover, although the discharge valve 40 and the outside air introduction valve 50 are integrally formed, they may be separate members.

  2 to 5, the cap body 20 is provided with a pressing portion (opening member) 60 for opening the outside air introduction valve 50 from the outside of the cap body 20 through the outside air introduction hole 23 so as to be elastically displaceable. ing.

  The push-down portion 60 is disposed above the outside air introduction hole 23 so as to protrude from a part of the upper end portion of the hanging cylinder portion 24 toward the radially outer side, and below the lever piece 61. And a pressing projection 62 for pressing the outside air introduction valve 50 through the outside air introduction hole 23 and an elastic connecting piece 63 for connecting the pressing projection 62 and the cap body 20 to each other. It is equipped with.

As shown in FIGS. 3 and 4, the lever piece 61 is formed in a semicircular shape in plan view, and an outer peripheral edge thereof is disposed radially outside the outside air introduction hole 23. Thereby, the lever piece 61 is arrange | positioned so that the whole external air introduction hole 23 may be covered from upper direction.
A bent portion 64 that is formed thinner than other portions of the lever piece 61 is formed at the connecting portion between the lever piece 61 and the hanging cylinder portion 24, for example. Thereby, the pressing part 60 is connected to the cap body 20 via the bent part 64.

  Further, the lever piece 61 is connected to the upper end portion of the hanging cylinder portion 24 formed in the central portion 22b disposed above the outer portion 22a of the top wall portion 22 through the bent portion 64. A gap is secured between the outer portion 22a and the lever piece 61 in the container axis O direction. Therefore, it is possible to push down the lever piece 61 downward about the bent portion 64 by the gap.

As shown in FIGS. 4 and 5, the pressing protrusion 62 is formed in a columnar shape, and is arranged at the center in the circumferential direction in the outside air introduction hole 23. At this time, the pressing protrusion 62 is disposed on the outer side in the radial direction with respect to the hanging cylinder part 24 in a state where a gap is formed between the depression protrusion 62 and the hanging cylinder part 24. Accordingly, the lever piece 61 can be pushed down around the bent portion 64 without causing the pressing projection 62 to interfere with the hanging cylinder portion 24.
The lower end portion of the pressing protrusion 62 protrudes downward beyond the outside air introduction hole 23 and is in contact with or close to the valve body 52 of the outside air introduction valve 50 from above. As a result, when the lever piece 61 is pushed down around the bent portion 64, the valve body 52 is forcibly pressed down using the pressing projection 62 as shown in FIGS. 6 and 7. It is possible to do.

As shown in FIGS. 4 and 5, the elastic connecting piece 63 includes a first arm piece 65 that connects the pressing protrusion 62 and the peripheral edge 23 a of the outside air introduction hole 23, and an outer peripheral surface of the pressing protrusion 62 and the hanging cylinder part 24. And a second arm piece 66 connecting the two.
In the illustrated example, the elastic connecting piece 63 including the first arm piece 65 and the second arm piece 66 is formed to be thin and disposed on the upper opening side in the outside air introduction hole 23. At this time, as shown in FIG. 5, the first arm piece 65 and the second arm piece 66 are arranged on the opposite sides in the circumferential direction with the pressing protrusion 62 interposed therebetween.

The first arm piece 65 has one end portion 65a connected to the pressing projection 62, extends from the connecting portion along the circumferential direction, and then bends radially outward so that the other end portion 65b becomes an outside air introduction hole. 23 is connected to the peripheral edge portion 23a.
The second arm piece 66 has one end portion 66a at a portion located on the opposite side in the circumferential direction from the portion of the pressing projection 62 to which the one end portion 65a of the first arm piece 65 is connected. Are connected. The second arm piece 66 extends from the connecting portion between the pressing projection 62 and the one end portion 66a along the circumferential direction, and then bends radially inward, so that the other end portion 66b is the hanging cylinder portion 24. It is connected with the outer peripheral surface.

  Thus, since the first arm piece 65 and the second arm piece 66 are connected to the pressing protrusion 62, the pressing protrusion 62 is moved downward by the pressing operation of the lever piece 61 as shown in FIGS. As it moves, the one end portion 65a of the first arm piece 65 and the one end portion 66a of the second arm piece 66 move downward. As a result, the first arm piece 65 and the second arm piece 66 are elastically deformed so as to be twisted and can store an elastic force (elastic energy).

As shown in FIG. 1, the lid portion 30 is formed in a cylindrical shape with a peripheral wall portion 31 and a top wall portion 32, and is detachably fitted to the upper end portion of the outer cylinder portion 21 in the cap body 20. .
The top wall portion 32 is formed with a seal cylinder portion 33 projecting downward. The seal cylinder part 33 is inserted into the discharge cylinder part 25 from above, and the lower end part is detachably fitted inside the discharge cylinder part 25. Thereby, the seal cylinder part 33 regulates the discharge of the contents through the discharge hole 26.

The peripheral wall portion 31 is connected to the outer cylinder portion 21 via a hinge portion 34. As a result, the lid 30 can be rotated around the hinge 34, and the seal cylinder 33 can be inserted into and removed from the discharge cylinder 25 along with the rotation, and the discharge hole 26 can be opened and closed. ing.
The peripheral wall portion 31 is formed with an operation projection piece 35 so as to protrude radially outward from a portion located on the opposite side of the hinge portion 34 across the container shaft O. Thereby, it is possible to easily perform the turning operation of the lid 30 using the operation protrusion 35.

(Operation of double container)
The case where the double container 1 configured in this way is used will be described.
When discharging the contents, first, the lid 30 of the discharge cap 5 shown in FIG. 1 is rotated around the hinge 34 to open the discharge hole 26 as shown in FIG. The outer container 3 of the container body 4 is squeezed (elastically deformed) radially inward while tilting 4 or turning upside down. As a result, the inner container 2 is deformed and reduced in volume in the radial direction together with the outer container 3, so that the internal pressure of the inner container 2 increases.

  Then, the valve main body 41 in the discharge valve 40 is separated upward from the upper surface of the inner base portion 11 b, so that the flow hole 16 is opened and the discharge hole 26 communicates with the inside of the inner container 2 through the flow hole 16. Thereby, the contents accommodated in the inner container 2 can be discharged to the outside through the discharge hole 26. At this time, the valve body portion 13 in the housing cylinder portion 12 moves toward the regulating projection 12b as shown by the dotted line in FIG.

  After that, by stopping or releasing the squeeze deformation of the container body 4, when the increase in the internal pressure of the inner container 2 is stopped or decreased, the valve body 41 of the discharge valve 40 returns to the original state by the restoring deformation of the elastic arm 42, It sits on the upper surface of the inner base portion 11b. Thereby, the circulation hole 16 can be closed again, and the communication between the discharge hole 26 and the inside of the inner container 2 is blocked. For this reason, discharge of the contents can be stopped.

Further, by releasing the squeeze deformation of the container body 4, the outer container 3 starts to be restored and deformed, so that a negative pressure is generated between the outer container 3 and the inner container 2. Then, since this negative pressure acts on the outside air introduction valve 50 through the intake hole 6, the outer end portion 52 a of the valve body 52 is separated downward from the lower surface of the top wall portion 22 to open the outside air introduction hole 23. Accordingly, outside air flows from the outside through the outside air introduction hole 23, and the outside air flows between the inner container 2 and the outer container 3 through the intake hole 6.
As a result, even if the outer container 3 is restored and deformed, the inner container 2 can be separated from the inner surface of the outer container 3 and kept in a reduced volume deformed state.

In addition, by returning the container body 4 to the upright posture in accordance with the release of the squeeze deformation of the container body 4, the valve body part 13 in the housing cylinder part 12 is moved to the reduced diameter part 12 a side by its own weight, and the contraction is performed. It can be seated on the diameter portion 12a. It is possible to move the valve body 13 to the reduced diameter portion 12a side not only by its own weight but also by the negative pressure generated by the restoring force of the inner container 2.
And even if the contents remain between the discharge cylinder part 25 and the inner base part 11b due to the suck back effect accompanying the movement of the valve body part 13, the remaining contents are drawn into the accommodating cylinder part 12. Can do. Accordingly, the residual contents are difficult to leak to the outside through the discharge holes 26, and dripping can be prevented.

  In addition, since it is also possible to move the valve body part 13 in the accommodation cylinder part 12 to the regulation protrusion 12b side using the increase in the internal pressure of the inner container 2, the container body 4 is not necessarily tilted or discharged when the contents are discharged. There is no need to flip it upside down.

  By the way, when the contents contained in the inner container 2 are completely discharged (used up), almost the entire inner container 2 is reduced in volume and separated from the outer container 3, and the outside air introduction valve 50 is used. The outer end 52 a of the valve body 52 is in contact with the lower surface of the top wall 22 to close the outside air introduction hole 23.

  Therefore, when the double container 1 is discarded, as shown in FIGS. 6 and 7, the lever piece 61 of the pressing portion 60 is pushed down around the bent portion 64 so as to bend the bent portion 64. Manipulate. Accordingly, the pressing protrusion 62 can be moved downward as the lever piece 61 is pressed down, and a part of the valve body 52 in the outside air introduction valve 50 is forcedly pushed down from the top through the outside air introduction hole 23 to be opened (opened). The outside air introduction hole 23 can be opened.

Accordingly, the outer container 3 is pressed radially inward while the pressing portion 60 is pressed down, so that the air between the inner container 2 and the outer container 3 passes through the intake hole 6 and the outer air introduction hole 23. Since the outer container 3 can be discharged to the outside, the volume of the outer container 3 can be easily reduced.
In particular, the lever piece 61 can be used to push down the pressing portion 60 with one hand, for example, so that it is easy to continue the operation of volume-reducing and deforming the outer container 3. Furthermore, by closing the cover 30 of the discharge cap 5 with the outer container 3 deformed and deformed, the outer container 3 can be maintained in a state of being deformed and deformed.
Accordingly, the entire container body 4 including the outer container 3 can be maintained in a crushed state, and the double container 1 can be discarded without being bulky. Therefore, for example, it is possible to reduce processing costs and improve work efficiency in disposal work.

  Furthermore, in this embodiment, since the outside air introduction hole 23 and the pressing part 60 are formed in the top wall part 22 of the cap body 20 in which the discharge hole 26 is formed, at the stage where the contents remain, for example, It is easy to prevent external interference such as a fingertip touching the pressing unit 60. Therefore, it is possible to prevent the pressing unit 60 from being erroneously pressed before being discarded.

By the way, while the lever piece 61 is being pushed down, the first arm piece 65 and the second arm piece 66 are elastically deformed so as to be twisted together, thereby storing elastic energy. Therefore, when the depression of the lever piece 61 is released, the elastic connecting piece 63 composed of the first arm piece 65 and the second arm piece 66 is restored and deformed by the elastic force, and the pressing portion 60 is returned to the original state. .
Therefore, for example, even when the pressing unit 60 is erroneously pressed before disposal, the pressing unit 60 can be easily returned to the original state. Therefore, even if an erroneous operation is performed, it is possible to respond quickly and easy to use.

In the first embodiment described above, the pressing projection 62 and the peripheral edge 23a of the outside air introduction hole 23 are connected by the first arm piece 65, and the pressing projection 62 and the outer peripheral surface of the hanging cylinder portion 24 are connected to the second arm. Although it was set as the structure connected with the piece 66, it is not limited to this case.
For example, similarly to the second arm piece 66, the first arm piece 65 may connect the pressing protrusion 62 and the outer peripheral surface of the hanging cylinder part 24. Further, the second arm piece 66 may connect the pressing projection 62 and the peripheral edge portion 23 a of the outside air introduction hole 23 in the same manner as the first arm piece 65. Even in these cases, the same effect can be achieved. However, it is preferable to configure the first arm piece 65 and the second arm piece 66 as in the above embodiment because the pressing protrusion 62 can be supported in a balanced manner.

  Further, the elastic connecting piece 63 is not limited to the configuration having the first arm piece 65 and the second arm piece 66. For example, the elastic connecting piece 63 is connected to the lever piece 61 and the outer portion 22a of the top wall portion 22a. An elastic body (a leaf spring, a coil spring, or the like) that is disposed between the upper surface and connects the lever piece 61 and the top wall portion 22 to each other may be used.

  Further, the elastic force (spring force) of the elastic connecting piece 63 may be set freely. In this case, for example, by setting the elastic force strongly, it is possible to make it difficult to press down the pressing unit 60. For example, it is possible to more effectively suppress the pressing unit 60 from being erroneously pressed before disposal. be able to.

(Second Embodiment)
Next, a second embodiment of the double container according to the present invention will be described. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  As shown in FIGS. 8 to 10, the double container 70 of the present embodiment includes a pressing portion (opening member) 71 having an arc shape in plan view that extends along the circumferential direction, and is elastically displaced with respect to the cap body 20. It is freely combined. In the present embodiment, the outside air introduction hole 23 is formed in an arc shape in plan view in the central portion 22b of the top wall portion 22.

  The pressing portion 71 swells upward, and an elastically deformable pressing switch (pressing body) 72 disposed on the upper surface of the central portion 22b of the top wall portion 22 so as to cover the outside air introduction hole 23 from above. A pressing protrusion 73 that protrudes downward from the switch 72 and is disposed in the outside air introduction hole 23.

The push-down switch 72 is formed so as to swell upward in a hemispherical shape when viewed in a longitudinal section, and is formed in a circular arc shape in a plan view extending along the circumferential direction, and is disposed at the central portion in the circumferential direction of the outside air introduction hole 23. Has been. At this time, the push switch 72 is disposed in a groove 74 having a circular arc shape in plan view formed on the upper surface of the central portion 22 b of the top wall portion 22, and an outer peripheral end portion thereof is fitted inside the groove portion 74. Thereby, the push switch 72 is combined in a state of being positioned with respect to the top wall portion 22.
The push switch 72 is formed such that the length along the circumferential direction is shorter than the length along the circumferential direction of the outside air introduction hole 23. Therefore, the outside air introduction hole 23 is not completely blocked by the push switch 72.

The pressing protrusion 73 extends downward from the top of the pressing switch 72 and is formed on the arcuate projection piece 73a extending in the circumferential direction along the pressing switch 72 and at the lower end of the projection piece 73a. A pressing piece 73b disposed above the valve body 52 in the outside air introduction valve 50.
The pressing piece 73b is formed so as to swell downward in a semispherical shape when viewed in a longitudinal section, and is formed in an arc shape in plan view extending along the circumferential direction along the protruding piece 73a. The outer peripheral end portion of the pressing piece 73b extends radially outward and radially inward from the outside air introduction hole 23 and is in contact with the lower surface of the top wall portion 22 from below. Thereby, the pressing part 71 is combined with the top wall part 22 in a state in which the upward drop is restricted.

Even if it is the double container 70 comprised in this way, the effect similar to 1st Embodiment can be achieved.
That is, at the time of disposal, by pressing the pressing portion 71 so as to collapse the pressing switch 72, the valve body 52 of the outside air introduction valve 50 can be pressed from above using the pressing piece 73b. Therefore, a part of the valve body 52 can be forcibly pushed down to be opened (opened), and the outside air introduction hole 23 can be opened. Therefore, in a state where the pressing portion 71 is pressed down, the outer container 3 is pressed toward the inner side in the radial direction, so that the air between the outer container 3 and the inner container 2 is as shown by arrows in FIG. The air can be discharged to the outside through the intake hole 6 and the outside air introduction hole 23. Therefore, the volume of the outer container 3 can be easily reduced and deformed, and the entire container body 4 can be crushed.

  Further, when the push-down operation of the push-down unit 71 is released, the push-down switch 72 is restored and deformed by the elastic force. For example, even if the push-down unit 71 is accidentally pushed down before disposal, the push-down unit 71 Can be restored to its original state.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in each of the above embodiments, the double container is a laminated peelable container in which the inner container is detachably laminated on the inner surface of the outer container, but is not limited thereto, and the inner container and the outer container It may be a double container in which a gap is secured between the two. However, it is preferable to use a laminate peelable container because versatility can be improved.

In the above embodiments, the case where the outside air introduction hole, the outside air introduction valve, and the pressing portion are provided in the cap body has been described as an example. However, the outside air introduction hole, the outside air introduction valve, and the pressing portion are provided in the outer container. It doesn't matter. Even in this case, the same effect can be achieved. In any case, an outside air introduction hole, an outside air introduction valve, and a pressing portion may be formed in any one member of the outer container and the cap body.
However, it is preferable to provide the outside air introduction hole, the outside air introduction valve, and the pressing portion on the top wall portion of the cap body as in the above embodiment because it is easy to prevent the pressing portion from being touched by mistake.
Even when the outside air introduction hole is formed in the top wall portion, the outside air can be appropriately introduced between the inner container and the outer container through the intake hole formed in the outer container. It is possible to ensure the same external air introduction performance as that when forming the.

Furthermore, in each of the above embodiments, the pressing member that opens the outside air introduction valve by pushing down a part of the valve body of the outside air introduction valve is described as an example of the opening member. The configuration is not limited to the above, and any configuration may be used as long as the outside air introduction valve is opened to allow communication with the outside.
For example, a part of the valve body may be broken or punctured to open the outside air introduction valve by bending the opening member around the bent part.

DESCRIPTION OF SYMBOLS 1,70 ... Double container 2 ... Inner container 3 ... Outer container 4 ... Container main body 4a ... Port part of container main body 5 ... Discharge cap 6 ... Intake hole 20 ... Cap main body 22 ... Top wall part 23 ... Outside air introduction hole 26 ... Discharge hole 40 ... Discharge valve 50 ... Outside air introduction valve (air valve)
60, 71 ... pressing part (opening member)
62, 73 ... pressing projection

Claims (3)

A container main body including an inner container that contains the contents and is reduced in volume as the contents are reduced, and an outer container in which the inner container is installed;
A discharge cap having a cap body attached to the mouth of the container body and having a discharge hole for the contents;
The discharge cap includes a discharge valve that switches between communication and blocking between the discharge hole and the inside of the container body,
One member of the outer container and the cap main body has an outside air introduction hole communicating with the outside and between the inner container and the outer container, and the one member An air valve for freely closing the outside air introduction hole from the inside is disposed,
An opening member that opens the air valve from the outside of the one member through the outside air introduction hole is connected to the one member so as to be elastically displaceable. The double container according to claim 1,
The double container according to claim 1, wherein the opening member includes a pressing protrusion for pressing the air valve through the outside air introduction hole. In the double container according to claim 1 or 2,
The cap body is formed in a top tube shape having a top wall portion in which the discharge hole is formed,
The outside air introduction hole and the opening member are formed in the top wall portion,
The double container, wherein the outer container is formed with an intake hole that communicates the outside air introduction hole and between the inner container and the outer container.

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