JP2017186019A - Discharge container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably carry out the communication and blocking between the middle between the outer and inner containers, and the outside of a container body without being influenced by empty weight.SOLUTION: A discharge container 1 comprises a container body 4 equipped with an inner container 2 and outer container 3, and a discharge cap 6 having a formed discharge port 5. In the outer container, a pair of suction holes 14 sucking an outdoor air is formed between the outer and inner containers, and a discharge cap comprises an inside plug 30 in which a communication hole 37 communicating the discharge port with the inside of the inner container is formed, and a discharge valve 50 opening or closing the communication hole. In the pair of suction holes, the check valves 70 switching communication and blocking between the middle between the outer and inner containers, and the outside of the container body, are individually loaded to be capable of freely seceding. A pair of check valves allow air inflow between the outer and inner containers, but regulate air outflow. The check valves are integrally connected via a connection belt extending in a circumferential direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a discharge container.

Conventionally, for example, as shown in Patent Document 1 below, a flexible inner container that accommodates contents and squeezes and deforms as the contents decrease, and an inner container that is internally housed and elastically deformable There is known a discharge container including a container main body including a container, and a discharge cap that is attached to a mouth portion of the container main body and formed with a discharge port for discharging contents.
In this discharge container, the outer container is formed with an intake hole through which the outside air is sucked between the inner container and the outer container. The discharge cap includes an outside air introduction hole that communicates between the outside and the intake hole, an air valve that switches communication between the intake hole and the outside air introduction hole, a communication hole that communicates the inside of the inner container and the discharge port, A valve member that switches between communication and blocking between the outlet and the communication hole; and an elastically deformable discharge film that closes the discharge port. A slit is formed in the discharge film, and the discharge port is opened by expanding the slit as the internal pressure of the inner container increases.

  In the conventional discharge container configured as described above, when the contents stored in the inner container are discharged, for example, the outer container is squeezed (elastically deformed), and the inner container is deformed together with the outer container. As a result, the volume of the inner container is reduced and the internal pressure is increased, so that the slit is widened to open the discharge port, and the valve member is opened to connect the discharge port and the inside of the inner container through the communication hole. Let Thereby, the contents accommodated in the inner container can be discharged to the outside from the discharge port.

  When the squeeze deformation of the outer container is released after the contents are discharged, the outer container tries to be restored. At this time, the valve member blocks the communication hole and seals the inner container, and negative pressure generated between the outer container and the inner container acts on the air valve through the intake hole. As a result, the air valve opens to allow the intake hole and the outside air introduction hole to communicate with each other. Therefore, outside air flows into the discharge cap from the outside air introduction hole, and is sucked between the outer container and the inner container through the intake hole. Then, when the internal pressure between the outer container and the inner container rises due to the intake of the outside air, the air valve is restored and deformed to close, and the intake hole and the outside air introduction hole are blocked. Therefore, the volume reduction shape of the inner container is maintained by sucking outside air between the outer container and the inner container.

JP 2013-112370 A

In the above-described conventional discharge container, the air valve is abutted (seated) from the lower side against the air valve seat formed on the lower surface of the top wall portion of the outer cylinder of the discharge cap, so that the outside air introduction hole is formed. It is closed freely. For this reason, the air valve easily moves downward due to its own weight, and the outside air introduction hole may not be properly closed. In addition, the air valve may loosen contact with the air valve seat from below due to the effects of molding errors, changes over time, temperature changes, etc., and the outside air introduction hole can be properly blocked due to the influence of its own weight. There was no case.
As described above, in the conventional discharge container, the air valve is easily affected by its own weight, and there is a case where a change occurs in how the outside air is taken in. For this reason, there are cases in which, for example, the outside air introduction hole cannot be blocked during use, or that outside air cannot be taken in when the outer container is restored and deformed.

  As a countermeasure against the above inconvenience, for example, it is conceivable to form the air valve in advance so as to strongly contact the air valve seat from below. However, in this case, the elastic force of the air valve is increased, and for example, the valve is not properly opened when the outer container is restored and deformed, and it is difficult to take in outside air.

  The present invention has been made in view of such circumstances, the purpose of the communication between the outer container and the inner container and the outside of the container body, without being affected by its own weight, And it is providing the discharge container which can perform the interruption | blocking stably.

(1) A discharge container according to the present invention includes a container main body including an inner container in which the contents are accommodated and volume-reducing and deformable as the contents are reduced, and an outer container in which the inner container is installed, and the container A discharge cap attached to the mouth of the main body and formed with a discharge port for discharging the contents, and the outer container has an intake hole in the circumferential direction for sucking outside air between the inner container and the outer container. A pair is formed at an interval, and the discharge cap closes the mouth portion, and has an inner plug formed with a communication hole that connects the discharge port and the inside of the inner container, and opens and closes the communication hole. A check valve for switching between communication between the outer container and the inner container and the outer side of the container main body and switching between the two and the intake holes. A pair of the check valves are mounted separately, and the pair of check valves are disposed between the outer container and the inner container. To allow inflow of air, and to regulate the outflow, a pair of said check valve, disposed outside of the outer container are connected together and via a connecting band extending in the circumferential direction.

According to the discharge container according to the present invention, the inner container is deformed and deformed (for example, squeezed) together with the outer container by, for example, squeezing (elastically deforming) the outer container of the container main body. Thereby, since the internal pressure of an inner container rises, a discharge valve opens and a communicating hole is open | released. Therefore, the contents stored in the inner container can be discharged to the outside through the communication hole.
Thereafter, when the internal pressure of the inner container decreases, the discharge valve is closed to close the communication hole, and the inner container is sealed. When the squeeze deformation of the outer container is released, the outer container tends to be restored and deformed, so that a negative pressure is generated between the outer container and the inner container. Therefore, this negative pressure allows the outside air to be sucked between the outer container and the inner container through the check valve. In other words, when the negative pressure acts on the check valve, the check valve communicates the outside of the container body with the space between the outer container and the inner container, and sucks outside air between the outer container and the inner container. Let
When the internal pressure between the outer container and the inner container rises due to the intake of the outside air, the check valve is used to regulate the outflow of air from the outer container to the outer container. Communication between the container and the outside of the container body is blocked. As a result, the outer container can be restored and deformed while reducing the volume of the inner container.

In particular, since the check valve is mounted in an intake hole formed in the outer container, it is hardly affected by its own weight. Therefore, communication between the outer side of the container main body and between the outer container and the inner container can be performed and blocked using the check valve without being influenced by its own weight. Therefore, the check valve can be provided with a stable valve function over a long period of time, and a discharge container having excellent discharge performance can be obtained.
Further, since a pair of intake holes are formed, it is possible to efficiently take in the outside air between the outer container and the inner container, and it is easy to quickly restore and deform the outer container while reducing the volume of the inner container. Accordingly, it is possible to quickly prepare for the next discharge of the contents.

Further, since the check valve mounted in each intake hole is integrally connected via a connecting band, for example, when one check valve behaves so as to come out of the intake hole, the behavior is reduced. It can be suppressed by the connecting band. Therefore, the check valve mounted in the intake hole can easily remain stably in the intake hole, and this also makes it possible to provide the check valve with a stable valve function.
Furthermore, since the pair of check valves are integrally connected via the connecting band, it is easy to mount the check valve in the intake hole when assembling the discharge container, and it is excellent in setability. Yes.

In addition, a conventional air valve that freely closes the outside air introduction hole by being separably seated on the air valve seat from the lower side is, for example, subject to vibration when air passes through the outside air introduction hole. As a result, there was a case where a noise was generated.
On the other hand, since the check valve in the present invention is mounted in the intake hole formed in the outer container as described above, vibration or the like hardly occurs. Therefore, it is possible to prevent the generation of abnormal noise due to sound.

(2) The check valve includes a valve body that is inserted into the intake hole and elastically deforms when an internal pressure in a gap between the outer container and the inner container is lower than an external pressure of the container body. The valve body may allow air to flow into the space between the outer container and the inner container from the outside of the container body by elastic deformation.

  In this case, when the negative pressure is generated between the outer container and the inner container, the valve body is elastically deformed, so that the outside air can be sucked between the outer container and the inner container. In this way, since the outside air can be sucked between the outer container and the inner container by utilizing the elastic deformation of the valve body inserted into the intake hole, it is difficult to be affected by its own weight. The communication between the container and the inner container and the blocking thereof can be performed more stably.

(3) The pair of intake holes may be disposed with the container shaft sandwiched in the radial direction.

  In this case, since the intake holes are arranged so as to face in the radial direction across the container shaft, it is easy to maintain the inner container in a state of being uniformly deflated and deformed without being biased by the intake of outside air, It is easy to discharge the contents smoothly without waste.

  According to the discharge container of the present invention, it is possible to stably perform communication between the outside of the container main body and between the outer container and the inner container and the blocking thereof without being affected by the dead weight. The check valve can be provided with a valve function that is stable over a long period of time. Therefore, it can be set as the discharge container which has the outstanding discharge performance.

It is a longitudinal section showing a 1st embodiment of a discharge container concerning the present invention. It is a cross-sectional view of the discharge container along the AA line shown in FIG. FIG. 3 is an enlarged cross-sectional view in which the periphery of the check valve shown in FIG. FIG. 4 is a side view of the check valve shown in FIG. 3. FIG. 4 is a cross-sectional view showing a state in which the check valve is displaced radially inward by elastic deformation from the state shown in FIG. 3, and outside air is allowed to be sucked between the outer container and the inner container. FIG. 3 is a top view (partially cross-sectional view) of the check valve unit shown in FIG. 2. FIG. 7 is a side view of the check valve unit shown in FIG. 6. It is a longitudinal cross-sectional view which shows 2nd Embodiment of the discharge container which concerns on this invention. It is a cross-sectional view of the discharge container along the line BB shown in FIG. FIG. 10 is an enlarged cross-sectional view in which the periphery of the check valve shown in FIG. 9 is enlarged. It is a side view of the check valve shown in FIG. FIG. 11 is a cross-sectional view illustrating a state in which the two seal pieces of the check valve are elastically deformed so as to be separated from the state illustrated in FIG. 10 and external air is allowed to be sucked between the outer container and the inner container. It is a cross-sectional view of the check valve unit shown in FIG. FIG. 14 is a side view (partially sectional view) of the check valve unit along the line CC shown in FIG. 13.

(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 discharge container 1 of the present embodiment is a flexible inner container 2 that accommodates contents (not shown) and undergoes volume reduction deformation (squeezing deformation) as the contents decrease. , And a bottomed cylindrical container body 4 having an outer container 3 in which the inner container 2 is housed, and a discharge cap 6 that is attached to the mouth portion 10 of the container body 4 and has a discharge port 5 for discharging the contents. And a cap-like cylindrical lid body 7 that is detachably attached to the discharge cap 6 and opens and closes the discharge port 5.

  In addition, the bottomed cylindrical container body 4 and the topped cylindrical lid body 7 are arranged in a state in which the respective central axes are located on a common axis. In the present embodiment, this common axis is referred to as a container axis O, the lid 7 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, for example, a laminated peelable container (Delami bottle) in which the inner container 2 is laminated on the inner surface of the outer container 3 in a peelable manner.
As the blow molding, for example, the container body 4 may be formed by forming a double (internal and external) laminated parison by extrusion molding or the like, and extruding and blow-molding the laminated parison. 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 10, a shoulder portion, a body portion, and a bottom portion are connected in order from the upper side. In addition, illustration of a shoulder part, a trunk | drum, and a bottom part is abbreviate | omitted in each drawing.
The outer container 3 can be squeezed (elastically deformed), and the inner container 2 undergoes volumetric deformation as the outer container 3 is squeezed. Therefore, at least a portion of the outer container 3 located in the trunk is elastically deformable toward the inside of the container.

  The mouth portion 10 of the container body 4 is configured by laminating the inner container 2 and the outer container 3. In the illustrated example, the mouth portion 10 of the container body 4 includes a lower cylinder portion 11 that extends upward from the upper end portion of the trunk portion, and an upper portion that extends upward from the upper end portion of the lower cylinder portion 11. And an upper cylinder portion 12 having a diameter smaller than 11.

A first screw portion 13 is formed on the outer peripheral surface of a portion (hereinafter referred to as an outer upper tube portion 12a) constituting the outer container 3 in the upper tube portion 12. In the portion of the outer upper cylinder portion 12a located below the first screw portion 13, an intake hole 14 for sucking outside air between the outer container 3 and the inner container 2 is spaced apart in the circumferential direction. A pair (two) is formed.
In the example shown in the drawing, the pair of intake holes 14 are arranged at an interval of 180 degrees with the container axis O as the center. That is, the pair of intake holes 14 are disposed with the container axis O sandwiched in the radial direction.

A communication groove 15 extending in the container axis O direction is formed on the outer peripheral surface of a portion of the outer upper cylinder portion 12 a located above the intake hole 14 at intervals in the circumferential direction. The communication groove 15 is formed so as to be positioned above the intake hole 14.
On the inner peripheral surface of the outer upper cylindrical portion 12a, a portion of the upper cylindrical portion 12 that constitutes the inner container 2 (hereinafter referred to as an inner upper cylindrical portion 12b) is laminated. At this time, the upper end portion of the inner upper cylindrical portion 12b is folded back toward the outside in the radial direction to close the upper end opening edge of the outer upper cylindrical portion 12a from above.

  The discharge cap 6 is a cap-shaped tubular cap body 20 attached to the mouth portion 10 of the container body 4, an inner plug 30 that is disposed in the cap body 20 and closes the mouth portion 10 of the container body 4, And a discharge valve 50 disposed between the cap body 20 and the inner plug 30.

The cap body 20 includes a cap peripheral wall 21 that surrounds the mouth 10 of the container body 4 from the outside in the radial direction, and a cap ceiling wall 22 that closes the upper end opening of the cap peripheral wall 21.
A second screw portion 23 is formed on the inner peripheral surface of the cap peripheral wall 21 to be screwed to the first screw portion 13 formed on the mouth portion 10 side of the container body 4. As a result, the entire discharge cap 6 is attached to the mouth portion 10 of the container body 4.
However, the mounting method of the discharge cap 6 is not limited to screwing, and may be mounted to the mouth portion 10 of the container body 4 by, for example, undercut fitting.

  The lower end portion of the cap peripheral wall 21 is closely fitted to the lower cylinder portion 11 of the container body 4. Accordingly, the intake hole 14 is prevented from communicating with the outside of the discharge container 1 through the gap between the cap peripheral wall 21 and the lower cylinder portion 11.

The cap top wall 22 is formed in a stepped shape so that the central portion 22b is positioned above the outer peripheral portion 22a connected to the cap peripheral wall 21.
In the central portion 22b of the cap top wall 22, the discharge port 5 penetrating the cap top wall 22 in the container axis O direction is formed. In the illustrated example, the discharge port 5 is formed at a position shifted from the container axis O to the outside in the radial direction. A discharge cylinder 24 projects upward from the peripheral edge of the opening of the discharge port 5 in the central portion 22 b of the cap top wall 22. In the illustrated example, the inner diameter of the discharge cylinder 24 gradually increases as it goes upward.

An outside air introduction hole 25 that communicates the inside and outside of the cap body 20 is formed in a portion of the cap top wall 22 that is located on the opposite side of the discharge port 5 in the radial direction across the container axis O.
Specifically, the outside air introduction hole 25 is formed in a step portion between the outer peripheral portion 22a and the central portion 22b. In addition, although the external air introduction hole 25 is formed in one place, you may form multiple, for example at intervals in the circumferential direction.
A hanging cylinder portion 26 is formed in the central portion 22 b of the cap top wall 22 so as to protrude downward from a portion located radially inward of the outside air introduction hole 25.

  The inner plug 30 has an annular bottom wall portion 31 whose outer peripheral edge portion is disposed on the upper end opening edge of the mouth portion 10 of the container body 4, and projects downward from the bottom wall portion 31. The seal cylinder part 32 fitted inside the mouth part 10, the outer cylinder part 33 erected upward from the outer peripheral edge part of the bottom wall part 31, and the upper part from the inner peripheral part of the bottom wall part 31 And an inner cylindrical portion 34 having a top-like shape that is erected.

An outer air circulation hole 35 that penetrates the outer cylinder portion 33 in the radial direction and opens downward is formed at the lower end portion of the outer cylinder portion 33. The outside air circulation hole 35 communicates with the intake hole 14 through the communication groove 15 described above.
On the bottom wall portion 31, an intermediate tube portion 36 is erected upward from a portion located between the outer tube portion 33 and the inner tube portion 34. A communication hole 37 is formed in the top wall portion 34a of the inner cylinder portion 34 so as to penetrate the top wall portion 34a in the container axis O direction. The communication hole 37 communicates the discharge port 5 with the inside of the container body 4.

  In the top wall portion 34 a of the inner cylinder portion 34, an accommodation cylinder portion 40 extending downward is formed at a portion located on the opposite side of the container shaft O from the communication hole 37 in the radial direction. The housing cylinder portion 40 has a central axis extending in parallel with the container axis O, and is open vertically. A seat tube 41 is formed at the lower end of the housing tube portion 40 and gradually decreases in diameter as it goes downward.

A housing 42 that can slide on the inner peripheral surface of the housing cylinder 40 in the container axis O direction is housed in the housing cylinder 40. The sliding body 42 is formed in a spherical shape having an outer diameter equivalent to the inner diameter of the portion located above the seating cylinder 41 in the housing cylinder part 40, and is detachably seated on the inner peripheral surface of the seating cylinder 41. .
The housing cylinder 40 and the sliding body 42 are configured such that the sliding body 42 passes through the housing cylinder 40 in the container axis O direction in a state where the communication between the inside of the inner container 2 and the discharge port 5 passing through the housing cylinder 40 is blocked. It is comprised so that it may slide along.

Note that there may be no gap between the outer peripheral surface of the sliding body 42 and the inner peripheral surface of the portion of the accommodating cylinder portion 40 located above the seating cylinder 41, or there may be a minute gap. May be.
On the inner peripheral surface of the upper portion of the housing cylinder portion 40, a restriction projection 43 that restricts the sliding member 42 from being pulled upward is formed so as to protrude inward in the radial direction. Thereby, the sliding body 42 is prevented from coming off from the housing cylinder portion 40.

In the example shown in the figure, the regulation protrusion 43 is formed so as to project in a convex shape at one place on the inner peripheral surface of the housing cylinder portion 40. However, the restriction projection 43 is not limited to one place. A plurality of them may be formed at intervals in the direction, or they may be formed in an annular shape over the entire circumference of the inner peripheral surface of the housing cylinder part 40.
Further, the regulation protrusion 43 is not essential and may not be provided. In this case, for example, the upward movement of the sliding body 42 may be regulated by a valve body 52 described later.

  The sliding body 42 moves to the regulating protrusion 43 side 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, It moves to the seating cylinder 41 side by the negative pressure generated by the restoring force of the container 2. As a result, the residual contents present in the discharge port 5 can be drawn into the accommodating cylinder portion 40, and dripping can be avoided by a so-called suck back effect.

  The sliding body 42 may be made of either synthetic resin or metal. However, when the sliding body 42 is made of metal, smooth movement due to its own weight is possible, so that the suck back effect can be further enhanced.

  The discharge valve 50 is seated from above on the valve body cylinder 51 disposed between the bottom wall portion 31 of the inner plug 30 and the cap top wall 22 of the cap body 20 and the top wall portion 34a of the inner cylinder portion 34. Thus, the valve body 52 that closes the communication hole 37, the valve body 52 and the valve body cylinder 51 are connected, and the elastic connection piece 53 that elastically supports the valve body 52 is provided.

  The valve body cylinder 51 is fitted to the inner side of the hanging cylinder part 26 formed on the top wall 22 of the cap, and the lower end part is fitted between the inner cylinder part 34 and the middle cylinder part 36 of the inner plug 30. Are combined. As a result, the inside of the valve body cylinder 51 functions as a communication passage 54 that communicates between the discharge port 5 and the communication hole 37.

  The valve body 52 is formed in a disc shape arranged coaxially with the container axis O, and is arranged inside the valve body cylinder 51 to close the communication hole 37. The elastic connecting piece 53 extends along the circumferential direction, has an inner end connected to the outer peripheral edge of the valve body 52, and an outer end connected to the inner peripheral surface of the valve body cylinder 51. In the illustrated example, three elastic connecting pieces 53 are formed at intervals in the circumferential direction. Thus, the discharge valve 50 is a so-called three-point valve in which the valve body 52 is elastically supported by the three elastic connecting pieces 53.

  The elastic connecting piece 53 is elastically deformed in the direction of the container axis O in accordance with, for example, the fluctuation of the internal pressure of the inner container 2 or the pressure of the discharged contents, and the valve body 52 is removed from the top wall part 34a of the inner cylinder part 34. It is elastically supported so that it can move upward. Therefore, the valve body 52 is elastically displaced in the container axis O direction with respect to the inner plug 30 to open and close the communication hole 37. Thereby, when the internal pressure of the inner container 2 rises, it is possible to open the communication hole 37 and circulate the contents.

  In addition, the valve body 52 does not completely close the upper end opening of the accommodation tube portion 40. Therefore, the inside of the accommodation cylinder part 40 is always opened upward. The number of elastic connecting pieces 53 is not limited to three. For example, the valve body 52 may be supported by one elastic connecting piece 53, or two or four or more elastic connecting pieces 53 may be used. The valve body 52 may be supported.

The lid body 7 is formed in a cylindrical shape having a peripheral wall portion 60 and a top wall portion 61, and is detachably fitted to the upper end portion of the cap peripheral wall 21.
The top wall portion 61 is formed with a plug cylinder 62 protruding downward. The plug cylinder 62 is inserted into the discharge cylinder 24 from above and has a lower end fitted inside the discharge port 5. As a result, the discharge port 5 is closed by the plug cylinder 62.

The peripheral wall portion 60 is rotatably connected to the cap peripheral wall 21 via a hinge portion 63. Thereby, the lid body 7 can open and close the discharge port 5 by inserting and removing the plug cylinder 62 from the discharge cylinder 24 with the rotation around the hinge portion 63.
The peripheral wall portion 60 is formed with an operation protrusion 64 that protrudes outward in the radial direction from a portion located on the opposite side of the hinge portion 63 across the container shaft O. Thereby, it is possible to easily perform the turning operation of the lid 7 using the operation protrusion 64.

  In the pair of intake holes 14 described above, a check that switches communication between the outside air inflow gap S1 that is a gap between the outer container 3 and the inner container 2 and the outside of the container main body 4 and the blocking thereof. Valves 70 are mounted separately. The pair of check valves 70 is inserted into the intake hole 14 from the outside in the radial direction, allows inflow of air (outside air) into the outside air inflow gap S1, and restricts outflow of air from the outside air inflow gap S1. .

As shown in FIG. 3, the check valve 70 includes a cylindrical insertion tube 71 inserted inside the intake hole 14 and a capped tube 72 that closes the inner end portion of the insertion tube 71. The valve main body 73 is provided.
The insertion cylinder 71 is disposed coaxially with the central axis O <b> 1 of the intake hole 14 and has an outer diameter smaller than the inner diameter of the intake hole 14. Thereby, an annular minute gap S <b> 2 is formed between the outer peripheral surface of the insertion cylinder 71 and the inner peripheral surface of the intake hole 14. The insertion cylinder 71 protrudes inward in the radial direction from the intake hole 14. Therefore, the inner container 2 is partially peeled radially inward from the outer container 3 by the valve body 73.

A bulging portion 74 that bulges outward in the radial direction of the insertion cylinder 71 over the entire circumference of the insertion cylinder 71 is provided on the outer peripheral surface of a portion of the insertion cylinder 71 positioned radially inward of the intake hole 14. Is formed.
The bulging portion 74 is in close contact with the opening peripheral edge portion in the inner opening portion (opening portion opened on the inner peripheral surface side of the outer container 3) of the suction hole 14 from the inner side in the radial direction. 14 is closed from the inside of the outer container 3.

As shown in FIGS. 3 and 4, a flange portion 75 is formed at the outer end portion of the insertion cylinder 71 so as to protrude outward in the radial direction of the insertion cylinder 71 over the entire circumference of the insertion cylinder 71. The flange portion 75 is in contact with the opening peripheral edge portion of the outer opening portion of the intake hole 14 (opening portion opened on the outer peripheral surface side of the outer container 3) from the outside in the radial direction.
The check valve 70 is restricted from being inserted into the intake hole 14 by the flange 75 coming into contact with the outer peripheral edge of the outer opening of the intake hole 14, and is positioned in the intake hole 14. Yes.

  In the illustrated example, a part of the flange portion 75 is cut so as to divide the flange portion 75 in the circumferential direction. Accordingly, the annular minute gap S2 formed between the outer peripheral surface of the insertion cylinder 71 and the inner peripheral surface of the intake hole 14 communicates with the outside of the container body 4 through the cut portion 75a. That is, the minute gap S <b> 2 communicates with the outside of the container body 4 through the cut portion 75 a, the communication groove 15, the outside air circulation hole 35, and the outside air introduction hole 25.

  The above-described insertion cylinder 71 can be elastically deformed in the direction of the central axis O1. Specifically, when the outside air inflow gap S1 between the outer container 3 and the inner container 2 becomes negative pressure, the insertion cylinder 71 is pulled to the outside air inflow gap S1 side by the negative pressure as shown in FIG. It will be elastically deformed. As a result, the bulging portion 74 slightly moves along the central axis O <b> 1 so as to be separated from the inner opening of the intake hole 14. Therefore, the outside air inflow gap S1 can communicate with the outside of the container body 4 through the minute gap S2.

  Although a part of the flange portion 75 is cut, the present invention is not limited to this case. For example, a through hole is formed in a part of the annular flange portion 75 and the outer peripheral surface of the insertion cylinder 71 and the intake air are passed through the through hole. A minute gap S <b> 2 between the inner peripheral surface of the hole 14 may be communicated with the outside of the container body 4.

  As shown in FIG. 2, the pair of check valves 70 configured as described above are arranged on the outer side in the radial direction of the outer container 3 and connected to a connecting band 80 extending in the circumferential direction. Connected together.

As shown in FIGS. 3, 4, 6, and 7, the connecting band 80 is formed in a band shape whose width along the container axis O direction is substantially equal to the outer diameter of the insertion tube 71, and has one end portion. Is connected to the flange portion 75 of one check valve 70, and the other end is connected to the flange portion 75 of the other check valve 70.
In the illustrated example, the connecting band 80 is connected to a portion of the flange portion 75 that is located on the opposite side of the cut portion 75a with the central axis O1 in between.

As shown in FIGS. 6 and 7, the pair of check valves 70 and the connecting band 80 constitute a check valve unit 81. Therefore, for example, it is possible to manufacture the check valve unit 81 in which the pair of check valves 70 and the connection band 80 are integrally combined in a single molding process.
In addition, after manufacturing the check valve unit 81, the connecting band 80 is bent in an arc shape, and then a pair of check valves 70 are inserted into the intake holes 14 from the outside in the radial direction, respectively. As shown, the check valve 70 can be mounted in the intake hole 14.

(Action of discharge container)
Next, the case where the discharge container 1 configured as described above is used will be described.
When discharging the contents, the lid body 7 is rotated around the hinge portion 63 to open the discharge port 5, and then the outer container 3 is squeezed inside the container while the container body 4 is tilted or turned upside down, for example. Deform (elastic deformation). As a result, the inner container 2 and the outer container 3 are deformed and deformed inside the container to reduce the volume.

  Therefore, the internal pressure of the inner container 2 increases, and the elastic connecting piece 53 is elastically displaced upward by, for example, the valve body 52 being pressed by the contents in the inner container 2. Thereby, the valve body 52 can be separated from the inside plug 30 to the discharge port 5 side, and the communication hole 37 can be opened. Therefore, the contents accommodated in the inner container 2 can be caused to flow into the communication passage 54 through the communication hole 37 and further discharged to the outside through the discharge port 5 and the discharge cylinder 24.

  At this time, the sliding body 42 moves toward the regulating projection 43 due to the weight of the sliding body 42 and the pressure in the inner container 2 exerted through the seating cylinder 41 of the housing cylinder portion 40.

After that, when the discharge container 1 is returned to the upright posture with the mouth portion 10 facing upward, and the increase in the internal pressure of the inner container 2 is stopped or reduced by stopping or releasing the squeeze deformation of the container body 4, The elastic connecting piece 53 is restored and displaced downward by the elastic restoring force in combination with the pressing force applied to the valve body 52 by the contents.
As a result, the valve body 52 can be seated on the inner plug 30 and the communication hole 37 can be closed. Therefore, the inner container 2 can be sealed and the discharge of the contents can be stopped.

  At this time, the sliding body 42 moves downward in the housing cylinder portion 40 due to the weight of the sliding body 42 and a pressure drop in the inner container 2, and in the housing cylinder portion 40, the sliding port 42 is closer to the discharge port 5. It is seated on the seating cylinder 41 while increasing the volume of the portion located at the position. As a result, the pressure in the communication passage 54 becomes negative, and the contents remaining in the discharge cylinder 24 can be drawn into the communication path 54 or the accommodation cylinder portion 40 by the suck back effect accompanying the movement of the sliding body 42. it can. Accordingly, the residual contents are difficult to leak to the outside, and dripping can be prevented.

  In the process in which the sliding body 42 slides in the housing cylinder portion 40, the sliding body 42 may slide without a gap between the outer circumferential surface of the sliding body 42 and the inner circumferential surface of the housing cylinder portion 40. You may slide in the state where there was a minute gap to the extent that the pull-in action by the suck back effect described above occurs.

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. As a result, the outside air inflow gap S1 between the outer container 3 and the inner container 2 becomes a negative pressure, and as shown in FIG. 5, the insertion cylinder 71 of the check valve 70 is moved to the outside air inflow gap S1 side by this negative pressure. It is elastically deformed so as to be pulled.
As a result, the bulging portion 74 is slightly moved radially inward along the central axis O1 so as to be separated from the inner opening of the intake hole 14, and the outside air inflow gap S1, the outer peripheral surface of the insertion cylinder 71, and the intake hole 14 and the minute gap S2 between the inner peripheral surfaces of the 14 are in communication. Therefore, the outside air inflow gap S <b> 1 communicates with the outside of the container body 4 through the minute gap S <b> 2, the communication groove 15, the outside air circulation hole 35, and the outside air introduction hole 25.

Therefore, outside air can be sucked into the outside air inflow gap S1 through the check valve 70 as shown by an arrow in FIG. Then, when the internal pressure between the outer container 3 and the inner container 2 (internal pressure in the outer air inflow gap S1) increases due to the suction of the outside air, the insertion cylinder 71 moves toward the outside in the radial direction by elastic restoring displacement. As shown in FIG. 3, the bulging portion 74 closely contacts the opening peripheral edge of the inner opening of the intake hole 14 and closes the intake hole 14.
Accordingly, the check valve 70 blocks communication between the outside air inflow gap S1 and the outside of the container body 4, and restricts the outflow of air from the outside air inflow gap S1. As a result, the outer container 3 can be restored and deformed while the volume of the inner container 2 is reduced.

  After that, when the outer container 3 of the container body 4 is squeezed again, the check valve 70 is closed, so that the internal pressure of the outside air inflow gap S1 becomes positive, and the positive pressure causes the inner container 2 to be closed. Is reduced in volume. Therefore, the same action as described above can be achieved until the contents are completely discharged.

Particularly, since the check valve 70 is mounted in the intake hole 14 from the outside in the radial direction, the check valve 70 is hardly affected by its own weight. Therefore, communication between the outside of the container body 4 and the outside air inflow gap S1 (between the outer container 3 and the inner container 2) is performed and blocked using the check valve 70 without being influenced by its own weight. Can do.
Specifically, in the present embodiment, since the outside air is sucked into the outside air inflow gap S1 using the elastic deformation of the insertion cylinder 71 along the direction of the central axis O1 of the suction hole 14, it is difficult to be affected by its own weight.
Therefore, the check valve 70 can be provided with a stable valve function over a long period of time, and the discharge container 1 having excellent discharge performance can be obtained.

Since a pair of intake holes 14 are formed, the outside air can be efficiently taken into the outside air inflow gap S1, and the outer container 3 can be quickly restored and deformed while the inner container 2 is reduced in volume. Accordingly, it is possible to quickly prepare for the next discharge of the contents.
Moreover, in the present embodiment, since the pair of intake holes 14 are arranged so as to face each other with the container axis O sandwiched in the radial direction, the inner container 2 is deflated and deformed uniformly evenly by inhalation of outside air. It is easy to maintain it in a solid shape, and it is easy to discharge the contents smoothly without waste.

Further, since the check valve 70 is integrally connected via the connection band 80, for example, when any one of the check valves 70 behaves so as to come out of the intake hole 14, the behavior is connected to the connection band 80. Can be suppressed. Therefore, the check valve 70 mounted in the intake hole 14 can easily remain in the intake hole 14 stably, and the check valve 70 can be provided with a stable valve function.
Furthermore, since the pair of check valves 70 are integrally connected via the connecting band 80 to constitute the check valve unit 81, the check valve into the intake hole 14 when the discharge container 1 is assembled. It is easy to perform the mounting work of 70 and is excellent in setability.

In addition, a conventional air valve that freely closes the outside air introduction hole by being separably seated on the air valve seat from the lower side is, for example, subject to vibration when air passes through the outside air introduction hole. As a result, there was a case where a noise was generated.
On the other hand, since the check valve 70 in this embodiment is mounted in the intake hole 14 formed in the outer container 3, vibration or the like hardly occurs. Therefore, it is possible to prevent the generation of abnormal noise due to sound.

(Second Embodiment)
Next, a second embodiment of the discharge container according to the present invention will be described with reference to the drawings. 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 FIG.8 and FIG.9, the discharge container 90 of this embodiment is provided with the non-return valve unit 91 which has the nonreturn valve 100 different from 1st Embodiment.
As shown in FIGS. 10 and 11, the check valve 100 includes a valve body 101 having a first insertion portion 102 and a second insertion portion 103 connected to the first insertion portion 102 via a hinge portion 104. It has.

The first insertion portion 102 is formed in a semi-cylindrical shape, and the insertion portion main body 110 disposed inside the intake hole 14, and the intake hole 14 extends toward the inner side in the radial direction from the inner end portion of the insertion portion main body 110. The inclined piece 111 extending toward the central axis O1, the seal piece 112 extending radially inward from the inner end (tip) of the inclined piece 111, and the insertion portion main body from the outer end of the insertion portion main body 110 110, and an arcuate flange portion 113 protruding outward.
The second insertion portion 103 is configured in the same manner as the first insertion portion 102 and includes the above-described insertion portion main body 110, the inclined piece 111, the seal piece 112, and the flange portion 113.

  The hinge portion 104 is connected to the peripheral end portion of the flange portion 113 in the first insertion portion 102 and the peripheral end portion of the flange portion 113 in the second insertion portion 103. As a result, the second insertion portion 103 can be rotated around two hinge portions 104 with respect to the first insertion portion 102.

  The check valve 100 configured as described above is configured such that the flange portion 113 of the first insertion portion 102 and the flange portion 113 of the second insertion portion 103 abut against the opening peripheral edge portion of the outer opening portion in the intake hole 14. Further, the insertion into the intake hole 14 is restricted, and the intake hole 14 is positioned.

At this time, the flange portion 113 of the first insertion portion 102 and the flange portion 113 of the second insertion portion 103 are in close contact with the opening peripheral edge portion of the outer opening portion of the intake hole 14 from the outside in the radial direction. Further, the insertion portion main body 110 of the first insertion portion 102 and the insertion portion main body 110 of the second insertion portion 103 are in close contact with the inner peripheral surface of the intake hole 14. Further, the seal piece 112 of the first insertion portion 102 and the seal piece 112 of the second insertion portion 103 are in close contact with each other.
By these things, the clearance gap between the inlet hole 14 and the non-return valve 100 is sealed by the insertion part main body 110 and the flange part 113, and the clearance gap between seal pieces 112 is also sealed.

The valve main body 101 described above can be elastically deformed.
Specifically, when the outside air inflow gap S1 between the outer container 3 and the inner container 2 becomes negative pressure, as shown in FIG. 12, the negative pressure causes the seal pieces 112 and 112 of the first insertion portion 102 and The seal pieces 112 of the second insertion portion 103 are elastically deformed so as to be separated from each other. Thereby, a minute gap S <b> 2 is formed between the seal piece 112 of the first insertion portion 102 and the seal piece 112 of the second insertion portion 103. Therefore, the outside air inflow gap S1 can communicate with the outside of the container body 4 through the minute gap S2.

  The pair of check valves 100 configured as described above are integrally connected via a connecting band 80 as shown in FIGS. 9, 11, 13, and 14. One end of the connection band 80 is connected to the flange 113 of the first insertion portion 102 in one check valve 100, and the other end is connected to the flange 113 of the first insertion portion 102 in the other check valve 100. Has been.

  In the present embodiment, after the check valve unit 91 is manufactured, as shown in FIG. 13, the second insertion portion 103 is rotated around the hinge portion 104 so that the seal piece 112 of the first insertion portion 102 and the first 2 After facing the seal piece 112 of the insertion portion 103 and then bending the connecting band 80 in an arc shape, the two check valves 100 are respectively inserted into the intake holes 14 from outside in the radial direction. As shown in FIG. 8 and FIG. 9, the check valve 100 can be mounted in the intake hole 14.

In the molding stage of the check valve unit 91, a gap is secured between the seal piece 112 of the first insertion portion 102 and the seal piece 112 of the second insertion portion 103, as shown in FIG. Thereby, a play can be given to the hinge part 104 and shaping | molding becomes easy.
Then, when the check valve 100 is mounted in the intake hole 14, as shown in FIG. 10, the seal between the first insertion portion 102 is utilized by using a tightening margin between the intake hole 14 and the check valve 100. The piece 112 and the seal piece 112 of the second insertion portion 103 are in close contact with each other, and the insertion portion main body 110 of the first insertion portion 102 and the insertion portion main body 110 of the second insertion portion 103 are connected to the inner peripheral surface of the intake hole 14. In close contact with. As a result, the check valve 100 can be provided with a valve function.
By using the tightening margin in this way, the check valve unit 91 having both ease of molding and certainty of the valve function can be obtained.

In the present embodiment, as shown in FIGS. 10 and 14, the connecting portion between the inclined piece 111 of the first insertion portion 102 and the insertion portion main body 110, and the inclined piece 111 and the insertion portion main body of the second insertion portion 103. An engagement protrusion 115 is formed at a connection portion with 110 and protrudes outward and engages with the opening peripheral edge of the inner opening in the intake hole 14 from the inner side in the radial direction.
The check valve 100 is prevented from coming out of the intake hole 14 by the engagement protrusion 115.

(Operation of the discharge container 90)
Even in the case of the discharge container 90 configured as described above, the same effects as those of the first embodiment can be achieved.
In the case of this embodiment, when the outside air inflow gap S1 between the outer container 3 and the inner container 2 becomes negative pressure, as shown in FIG. 12, the negative pressure causes the seal piece 112 of the first insertion portion 102 to The seal piece 112 of the second insertion portion 103 is elastically deformed so as to be separated from each other. Thus, the outside air inflow gap S1 communicates with the outside of the container body 4 through the minute gap S2 between the seal pieces 112, the communication groove 15, the outside air circulation hole 35, and the outside air introduction hole 25.

Therefore, outside air can be sucked into the outside air inflow gap S1 through the check valve 100 as shown by an arrow in FIG. Further, when the internal pressure of the outside air inflow gap S1 increases due to the suction of outside air, the seal piece 112 of the first insertion portion 102 and the seal piece 112 of the second insertion portion 103 are elastically restored and displaced as shown in FIG. The air intake holes 14 are blocked by being in close contact with each other.
Accordingly, the check valve 100 blocks communication between the outside air inflow gap S1 and the outside of the container body 4, and restricts the outflow of air from the outside air inflow gap S1. As a result, the outer container 3 can be restored and deformed while the volume of the inner container 2 is reduced.

Thus, even in the case of the present embodiment, the same effects as those of the first embodiment can be achieved.
Even in the case of this embodiment, the check valve 100 exhibits the valve function by utilizing the elastic deformation of the seal piece 112 of the first insertion portion 102 and the seal piece 112 of the second insertion portion 103. The communication between the outside of the container body 4 and the outside air inflow gap S1 (between the outer container 3 and the inner container 2) and the blocking thereof can be performed without being influenced by its own weight. Therefore, the check valve 100 can be provided with a stable valve function over a long period of time, and the discharge container 90 having excellent discharge performance can be obtained.

  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 the above-described embodiment, the pair of intake holes 14 are disposed with the container shaft O sandwiched in the radial direction. However, the present invention is not limited to this case, and may be disposed at intervals in the circumferential direction. The container shaft O may not be disposed so as to face each other across the radial direction. For example, the pair of intake holes 14 may be arranged with an interval of 90 degrees around the container axis O.

In the above embodiment, the outside air introduction hole 25 is formed in the cap body 20, and outside air is introduced (inhaled) through the outside air introduction hole 25 from the outside of the container body 4 into the outside air inflow gap S 1. 25 may not be provided.
For example, a gap may be formed between the cap peripheral wall 21 and the lower cylinder portion 11, and outside air may be allowed to flow into the outside air inflow gap S1 through this gap. If the outside air introduction hole 25 is not provided, the communication groove 15 and the outside air circulation hole 35 are also unnecessary.

  Moreover, in the said embodiment, although the inner container 2 was made into the lamination peeling type container laminated | stacked on the inner surface of the outer container 3 so that peeling was possible as the container main body 4, it is not limited to this, The inner container 2 and outer container A double container in which a gap is secured between the container 3 and the container 3 may be used. However, it is preferable to use a laminate peelable container because versatility can be improved.

  Moreover, although it was set as the structure which aims at the drawing-in action using the accommodation cylinder part 40 and the sliding body 42, it is not limited to this case, The structure which does not comprise the accommodation cylinder part 40 and the sliding body 42 may be sufficient. . In this case, for example, the valve body 52 is preferably configured to exhibit a pulling action.

O ... Container shaft 1, 90 ... Discharge container 2 ... Inner container 3 ... Outer container 4 ... Container body 5 ... Discharge port 6 ... Discharge cap 10 ... Port of container body 14 ... Intake hole 30 ... Inside plug 37 ... Communication hole 50 ... Discharge valve 70, 100 ... Check valve 80 ... Link

Claims (3)

A container main body including an inner container in which the contents are accommodated and the volume can be reduced and deformed as the contents are reduced, and an outer container in which the inner container is installed;
A discharge cap mounted on the mouth of the container body and having a discharge port for discharging the contents;
In the outer container, a pair of air intake holes are formed between the inner container and an outside air to be sucked in the circumferential direction.
The discharge cap includes
An inner plug formed with a communication hole that closes the mouth and communicates the discharge port with the inside of the inner container;
A discharge valve for opening and closing the communication hole,
A check valve for switching between communication between the outer container and the inner container and the outer side of the container body and switching between the outer container and the inner container is mounted in each of the pair of intake holes,
The pair of check valves allow inflow of air between the outer container and the inner container and regulates outflow,
A pair of said check valves are discharge containers which are arrange | positioned integrally through the connection band which is arrange | positioned on the outer side of the said outer container, and extends in the circumferential direction. In the discharge container according to claim 1,
The check valve includes a valve body that is inserted into the intake hole and elastically deforms when an internal pressure in a gap between the outer container and the inner container is lower than an external pressure of the container body,
The said valve main body is a discharge container which accept | permits inflow of the air from the outer side of the said container main body between the said outer container and the said inner container by elastic deformation. The discharge container according to claim 1 or 2,
The pair of intake holes is a discharge container that is disposed with a container axis in a radial direction.

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