JP6283431B2 - Discharge container - Google Patents

Description

  The present invention relates to a discharge container.

  Conventionally, for example, a discharge container as described in Patent Document 1 below is known. This discharge container has a flexible inner container that accommodates the contents and squeezes and deforms as the contents are reduced, and an intake air that includes the inner container and sucks outside air between the inner container and the inner container. A container main body having an outer container formed with a hole, a discharge cap attached to the mouth of the container main body and formed with a discharge outlet for discharging contents, and an outside air introduction hole communicating the outside and the intake hole And an air valve portion for switching communication between the outside air introduction hole and the intake hole and blocking of the communication. The discharge cap includes a body cylinder member having a top shape, a pouring cylinder communicating with the main body cylinder member, and a check valve that switches communication between the main body cylinder member and the dispensing cylinder and blocking the blocking thereof. I have.

JP 2004-231280 A

  However, in the conventional discharge container, after the contents in the inner container are discharged, the check valve operates to return the contents remaining in the dispensing cylinder without being returned to the inner container from the discharge port. There was a risk of it.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to make it possible to prevent the contents that have not been returned to the inner container from being discharged from the outlet after the contents are discharged. Is to provide a container.

In order to solve the above problems, the present invention proposes the following means.
The discharge container according to the present invention is a flexible inner container that accommodates the contents and deforms in accordance with a decrease in the contents, and the inner container is provided with the inner container, and external air is provided between the inner container and the inner container. A container main body having an outer container in which an intake hole for inhalation is formed, a discharge cap that is attached to a mouth portion of the container main body and in which a discharge port for discharging contents is formed, and the outside and the intake hole communicate with each other. A discharge container comprising an outside air introduction hole, and an air valve part that switches between communication and blocking of the outside air introduction hole and the intake hole, wherein the discharge cap is a middle plug member that closes the mouth part, A hollow cylindrical main body cylinder member that covers the inner plug member and has the discharge port formed therein, and the inner plug member has a communication hole that communicates the discharge port with the inside of the inner container. In the communication hole, in the axial direction of the communication hole What is slidably fitted, the valve body for opening and closing the communication hole by elastically displaced along the axial direction, characterized in that it is arranged.

  In the present invention, when the contents are discharged from the discharge container, for example, the discharge container is inclined so that the discharge port faces downward, and the discharge container is pushed inward in the radial direction by pressing the discharge container to the pressure inside the discharge container. The valve body portion is pressed against the contents in the inner container. Then, the valve body is elastically displaced toward the outside of the inner container along the axial direction, thereby opening the communication hole. Thereby, the contents in the inner container are discharged to the outside through the communication hole and the discharge port.

After that, when the discharge container is returned to the original upright posture, the pushing of the discharge container is stopped and released, so that the pressure on the valve body by the contents in the inner container is weakened. It is restored and displaced inside the inner container along the direction.
At this time, when the valve body portion enters the communication hole, the valve body portion slides on the inner peripheral surface of the communication hole and the communication hole is closed. Thereby, an inner space in which the contents that have not been returned to the inner container remain is formed between the main body cylinder member and the inner plug member. The internal space communicates with the discharge port and the valve body portion is a part of the drawing wall, and communication with the communication hole is blocked by the valve body portion.

  Then, after the inner space is formed in this way, when the valve body portion continues the restoring displacement and slides in the communication hole along the axial direction, the inner space is reduced along with the restoring displacement of the valve body portion. The internal volume will increase. Thereby, the contents in the discharge port can be drawn into the inner space, and air can be sucked into the discharge port from the outside.

  As described above, according to the discharge container, after the contents are discharged, the contents in the discharge port can be drawn into the inner space, and air can be sucked into the discharge port from the outside, so that it was not returned to the inner container. It is possible to suppress the contents from remaining in the discharge port. Thereby, it can suppress that a content leaks from a discharge outlet after discharge of a content.

  The inner plug member has an outer peripheral edge portion disposed on the opening end of the mouth portion, and a plug main body having a through-hole opened through the inner container, and is erected from the plug main body. In addition, the through hole may be open inside, and the inside of the through hole may be the communication hole. The through hole may be smaller in diameter than the communication hole.

  In this case, since the through hole has a smaller diameter than the communication hole, even if the valve body portion unintentionally attempts to displace inside the inner container along the axial direction, the valve body portion is connected to the communication cylinder portion in the plug body. It will contact | abut to the part located in the radial inside rather than the above-mentioned displacement of a valve body part.

When the valve body is in contact with the stopper main body when the discharge container is not operated, the communication between the communication hole and the through hole can be blocked by the valve body.
Further, in this case, after the contents are discharged as described above and the inner space is formed, when the valve body portion is restored and displaced, the valve body portion slides in the communication hole over the entire length in the axial direction. Can be made. As a result, the internal volume of the inner space can be reliably increased, and the above-described effects can be remarkably achieved.
Note that the sliding (sliding contact) in the present invention may have a slight gap between the valve body portion and the communication hole as long as the above-described effects are achieved.

  Moreover, it is also preferable that the valve body part is connected to a cylindrical member arranged coaxially with the communicating cylinder part by an elastic connecting piece that is elastically deformed. The elastic connecting piece allows the valve body portion to be displaced along the axial direction by being elastically deformed.

  In this case, it is preferable that the plurality of elastic connecting pieces are arranged at equal intervals in the circumferential direction around the axial direction of the communication hole. In such a discharge container, the valve body portion can be allowed to be displaced along the axial direction while preventing the valve body portion from being inclined (twisted) with respect to the axial direction. .

  Furthermore, in this discharge container, it is also preferable that the elastic connecting piece is curved along the circumferential direction. According to such a discharge container, the elastic connecting piece can be in a state of being simply accommodated between the valve body portion and the tubular member disposed coaxially with the communicating tubular portion. Further, when the valve body part is displaced along the axial direction, the elastic connecting piece itself is in a twisted (screwed) state, and the elasticity of the elastic connecting piece restores the valve body part to the position before the displacement. Acts as

  In addition, it is also preferable that a displacement amount restricting portion that restricts an elastic displacement amount of the valve body portion by contacting the valve body portion that can slide along the axial direction is formed in the main body cylindrical member. The displacement amount restricting portion can determine the most elevated position (displacement limit position) of the valve body portion so that the discharge port is not blocked.

  The discharge container may include an overcap that is detachably attached to the discharge cap, and the overcap may be provided with a seal portion that is detachably fitted in the discharge port.

In this case, since the seal part is provided in the overcap, the contents can be prevented from unexpectedly leaking from the discharge port with the overcap closed.
In addition, as described above, after the contents are discharged, the contents that have not been returned to the inner container are less likely to remain in the discharge port. When fitted in the discharge port, the content can be prevented from being pushed out of the discharge port by the seal portion, or the content can be adhered to the seal portion.

  Moreover, it is preferable that the seal part in such a discharge container functions as a suppressing part that suppresses the elastic displacement of the valve body part when the overcap is closed. In this case, the displacement of the valve body portion in the covered state is suppressed, and the closed state of the communication hole can be maintained even when the container body is pressed by an unexpected external force or the like in the distribution or storage state.

  Further, in a discharge container having an overcap provided with a seal portion, a flow allowing the content to flow in a portion of the valve seat of the valve body portion that contacts the valve body portion. It is also preferable that an allowable groove is formed. Even after the closed state in which the valve body is seated on the valve seat, the contents remaining in the inner space can be returned to the inner container by the flow allowance groove. In addition, the size of the flow allowance groove can be set according to the contents, and finally the content stays in the flow allowance groove due to the surface tension so that air communication through the groove is prevented. Is set to For this reason, it is possible to reduce the residual content in the inner space, and when the seal portion enters the discharge port and is fitted with the overcap closed and covered, depending on the volume of the seal portion. It is possible to avoid the action of pushing out the contents. Therefore, it is possible to avoid the contents overflowing and the inside of the overcap and the discharge cap from being contaminated when the overcap is closed and covered.

  Moreover, the auxiliary | assistant cylinder part which the inside communicates with this discharge port may protrude in the opening peripheral part of the said discharge port in the said main body cylinder member toward the said communication hole side.

In this case, since the auxiliary cylinder part, which communicates with the discharge port at the periphery of the discharge port of the main body cylinder member, projects toward the communication hole side, after the contents are discharged, When the external air is sucked, the air is drawn into the auxiliary cylinder portion when the air is drawn further from the discharge port toward the communication hole. Thus, the air drawn into the auxiliary cylinder portion is drawn deeply toward the communication hole in the axial direction of the discharge port, and is difficult to diffuse in the radial direction of the discharge port.
Therefore, air is sucked not only into the discharge port but also into the auxiliary cylinder part, and after the contents are discharged, the contents that have not been returned to the inner container are prevented from remaining inside the discharge port and the auxiliary cylinder part. Thereby, it can suppress effectively that the content leaks from a discharge outlet.

When the discharge container includes an overcap that is detachably attached to the discharge cap and the overcap is provided with a seal portion that is detachably fitted in the discharge port, as described above. By suppressing the contents that have not been returned to the inner container from remaining inside the discharge port and the auxiliary cylinder after discharge of the contents, the seal portion is not extended into the discharge port but into the auxiliary tube. Even if it reaches, it can suppress that a content is pushed outside from a discharge outlet by a seal part, or a content adheres to a seal part.
And, in this way, by bringing the seal part into the auxiliary cylinder part and fitting it integrally inside both the discharge port and the auxiliary cylinder part, the contents are unexpectedly discharged from the discharge port in a state where the overcap is closed. It is possible to reliably suppress leakage.

  In addition, the inner plug member includes a communication tube portion whose inside is the communication hole, and an external fitting tube portion in which the valve body portion is connected via an elastic connecting piece is externally fitted to the communication tube portion. The elastic connecting piece may gradually move toward the outside of the inner container along the axial direction as it goes from the valve body side to the outer fitting cylinder portion side.

  In this case, since the elastic connecting piece gradually moves toward the outside of the inner container along the axial direction as it goes from the valve body portion side toward the outer fitting tube portion side, the valve body portion extends along the axial direction. When elastically displaced toward the outside of the inner container, an elastic restoring force can be effectively applied to the valve body portion.

  As described above, since the elastic restoring force can be effectively applied to the valve body part, for example, when the discharge container is unexpectedly slightly pushed inward in the radial direction, the valve body part Can be suppressed. Thereby, it can suppress that the contents discharge by an erroneous operation.

  Further, as described above, an elastic restoring force can be effectively applied to the valve body, so that when the contents are discharged, the pressing force on the valve body by the contents in the inner container is weakened. Sometimes, it becomes possible to smoothly restore and displace the valve body part inside the inner container along the axial direction, and the above-described effects can be reliably achieved.

  According to the discharge container according to the present invention, it is possible to prevent the contents that have not been returned to the inner container from being discharged from the discharge port after the contents are discharged.

It is a longitudinal cross-sectional view which shows the principal part of the discharge container which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view of the coupling body which comprises the discharge container shown in FIG. It is a top view of the coupling body shown in FIG. It is a longitudinal cross-sectional view explaining the effect | action of the discharge container shown in FIG. It is a longitudinal cross-sectional view explaining the effect | action of the discharge container shown in FIG. It is a longitudinal cross-sectional view which shows the principal part in the modification of the discharge container which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view explaining the effect | action of the discharge container shown in FIG. It is a longitudinal cross-sectional view which shows the coupling body which comprises the modification of the discharge container which concerns on one Embodiment of this invention. It is a perspective view which shows an example of cross-sectional structures, such as a coupling body which comprises the discharge container which concerns on one Embodiment of this invention. It is a perspective view which shows the state which the valve body part shown in FIG. 9 elastically displaced. It is a longitudinal cross-sectional view which shows the principal part in the modification of the discharge container which concerns on one Embodiment of this invention. It is a figure which expands and shows a part of principal part of the discharge container shown in FIG. (A) The perspective view of the inner stopper member which concerns on one Embodiment of this invention, (B) The expansion perspective view which shows the flow | permissible groove | channel formed in the communicating cylinder part of this inner stopper member. It is a longitudinal cross-sectional view which shows the principal part in the modification of the discharge container which concerns on one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the state which the valve body part shown in FIG. 14 elastically displaced.

Hereinafter, a discharge container according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the discharge container 10 contains the contents M (refer to FIG. 4) and has a flexible inner container 11 that is deformed by shrinkage as the contents M decrease, and the inner container 11 is internally provided. A container body 13 having an outer container 12 that is elastically deformable, a discharge cap 15 that is attached to the mouth portion 13a of the container body 13 and has a discharge port 14 for discharging the contents M, and a discharge cap 15. And an overcap 16 that is detachably disposed.

  Here, the container main body 13 is formed in a bottomed cylindrical shape, the overcap 16 is formed in a topped cylindrical shape, and when the overcap 16 is covered, the central axes of the container main body 13 and the overcap 16 are It is arranged on a common axis. Hereinafter, this common axis is referred to as the container axis O, the overcap 16 side along the container axis O direction is referred to as the upper side, the bottom side (not shown) of the container body 13 is referred to as the lower side, and the direction perpendicular to the container axis O is the diameter. The direction that goes around the container axis O is called the circumferential direction.

  The container body 13 is a so-called Delami bottle in which the inner container 11 is detachably laminated on the inner surface of the outer container 12. The container body 13 is formed by, for example, blow molding a co-extruded two-layer parison. The outer container 12 is made of, for example, polyethylene resin or polypropylene resin, and the inner container 11 is made of, for example, a polyamide-based synthetic resin that is not compatible with the resin forming the outer container 12 or ethylene vinyl alcohol. It is made of polymerized resin.

The mouth portion 13a of the container body 13 is formed in a two-stage cylindrical shape including an upper cylindrical portion 17 positioned on the upper side and a lower cylindrical portion 18 positioned on the lower side and formed with a larger diameter than the upper cylindrical portion 17. Has been.
A male screw portion 29 is formed on the outer peripheral surface of a portion (hereinafter, referred to as an outer upper tube portion) 17 a formed of the outer container 12 in the upper tube portion 17. In addition, an intake hole 19 through which outside air is sucked is formed between the outer upper cylinder portion 17 a and the inner container 11 at a portion located below the male screw portion 29. A communication groove 20 extending in the container axis O direction is formed in a portion of the male screw portion 29 located above the intake hole 19.

  An inner peripheral surface of the outer upper cylindrical portion 17a is a cylindrical surface, and a portion (hereinafter referred to as an inner upper cylindrical portion) 17b formed of the inner container 11 in the upper cylindrical portion 17 is laminated on the inner peripheral surface. Yes. Moreover, the upper end part of the inner upper cylinder part 17b is return | folded by the outer side of radial direction, and is arrange | positioned on the opening end of the outer upper cylinder part 17a.

The discharge cap 15 includes an inner plug member 21 that closes the mouth portion 13a of the container main body 13, and a top-like cylindrical main body cylinder member 23 that covers the inner plug member 21 and has the discharge port 14 formed therein. Yes.
The inner plug member 21 includes a plug main body 47 whose outer peripheral edge is disposed on the opening end of the mouth portion 13 a of the container main body 13, and a communication cylinder portion 22 erected from the plug main body 47.

  The stopper body 47 has a bottomed cylindrical inner cylinder portion 24 disposed in the mouth portion 13a of the container body 13 with a gap between the mouth portion 13a, and a radial direction from the upper end of the inner cylinder portion 24. A flange portion 25 that protrudes toward the outside of the container body 13 and is disposed on the open end of the mouth portion 13a of the container body 13, and an outer cylinder portion 26 that extends upward from the outer peripheral edge of the flange portion 25; An intermediate tube portion 27 extending downward from the flange portion 25 so as to surround the inner tube portion 24 from the outside in the radial direction and fitted in the mouth portion 13a of the container body 13 in a liquid-tight manner. ing.

  These inner cylinder part 24, flange part 25, outer cylinder part 26 and intermediate cylinder part 27 are arranged coaxially with the container axis O. An outer air circulation hole 28 that penetrates in the radial direction and opens downward is formed at the lower end portion of the outer cylinder portion 26.

  The communication tube portion 22 is disposed on the bottom wall portion of the inner tube portion 24. In addition, a through-hole 42 that opens both in the inner container 11 and in the communication cylinder portion 22 is provided in the bottom wall portion. The through hole 42 is arranged coaxially with the container axis O and has a smaller diameter than the inner diameter of the communication cylinder part 22. The size of the through hole 42 along the container axis O direction is the container axis of the communication cylinder part 22. It is smaller than the size along the O direction.

The main body cylinder member 23 is formed in a top cylinder shape that is arranged coaxially with the container axis O.
On the inner peripheral surface of the peripheral wall portion 23 a of the main body cylinder member 23, a female screw portion 30 is formed that is screwed to the male screw portion 29 of the mouth portion 13 a of the container main body 13. In addition, in the peripheral wall portion 23a, a lower cylinder portion 18 of the mouth portion 13a of the container body 13 is fitted in an airtight state in a lower end portion located below the screw portion where the female screw portion 30 is formed, and the screw The outer tube portion 26 of the inner plug member 21 is fitted in the upper end portion located above the portion.

  The top wall portion 23b of the main body cylinder member 23 has an annular lower plate portion 31 that extends radially inward from the upper end of the peripheral wall portion 23a, and a smaller diameter than the inner diameter of the lower plate portion 31. The upper plate part 32 arrange | positioned rather than the part 31 and the connection ring part 33 which connects the inner periphery of the lower plate part 31, and the outer periphery of the upper plate part 32 are provided. The lower plate portion 31, the upper plate portion 32 and the connecting ring portion 33 are arranged coaxially with the container axis O.

The connection ring portion 33 is formed with an outside air introduction hole 34 that allows the inside of the main body cylinder member 23 to communicate with the outside. The upper plate portion 32 is formed with a receiving tube portion 35 that extends downward and has an inner diameter equal to the inner diameter of the inner tube portion 24 of the inner plug member 21.
Further, the upper plate portion 32 is provided with a discharge cylinder 36 whose inside is the discharge port 14.

An inner seal cylinder portion (seal portion) 37 extending downward from the overcap 16 is fitted into the discharge port 14. The discharge cylinder 36 is fitted with an outer seal cylinder portion 38 extending downward from the overcap 16. Further, in the illustrated example, the axis of the discharge cylinder 36 is shifted in the radial direction from the container axis O, and the discharge cap 15 and the overcap 16 are disposed on the opposite side of the discharge cylinder 36 across the container axis O in the radial direction. Are provided.
Thus, the axial direction of the discharge port 14 coincides with the container axis O direction.

  Here, between the inner plug member 21 and the main body cylinder member 23, an outer fitting cylinder portion 40 that is externally fitted to the communication cylinder portion 22 of the inner plug member 21 is disposed. The outer fitting cylinder part 40 is arranged coaxially with the container axis O, and the lower end part of the outer fitting cylinder part 40 is fitted on the communication cylinder part 22 and in the inner cylinder part 24 of the inner plug member 21. The upper end part of the outer fitting cylinder part 40 is fitted in the receiving cylinder part 35 of the main body cylinder member 23.

  An annular air valve portion 41 projecting outward in the radial direction is formed at an intermediate portion of the outer fitting tube portion 40 in the container axis O direction. The air valve portion 41 is disposed so as to cover the space between the receiving tube portion 35 and the connecting ring portion 33 from below. The air valve portion 41 is elastically deformable, and switches between communication between the intake hole 19 and the outside air introduction hole 34 and blocking of the communication.

  The inner plug member 21 is formed with a communication hole 43 that allows the discharge port 14 and the inner container 11 to communicate with each other. The communication hole 43 is configured by the inside of the communication cylinder portion 22 and is disposed coaxially with the container axis O. As a result, the container axis O direction and the axial direction of the communication hole 43 coincide. In the illustrated example, the communication hole 43 is positioned below the discharge port 14, that is, inside the inner container 11 along the container axis O direction. Furthermore, the internal volume of the communication hole 43 is larger than the internal volume of the discharge port 14.

In this embodiment, the valve body 44 is fitted in the communication hole 43 so as to be slidable along the container axis O direction, and is elastically displaced along the container axis O direction to open and close the communication hole 43. Is arranged.
The valve body portion 44 is formed in a bottomed cylindrical shape arranged coaxially with the container axis O, and the bottom surface of the valve body portion 44 is the bottom wall portion of the inner cylinder portion 24 in the plug body 47 of the inner plug member 21. In FIG. 4, the portion is in contact with a portion located on the inner side in the radial direction with respect to the communication tube portion 22. The bottom surface is located on the upper opening surface of the through hole 42 and blocks communication between the through hole 42 and the communication hole 43.

Further, the upper end of the valve body portion 44 is located above the upper end of the communicating cylinder portion 22, and as shown in FIGS. 2 and 3, the upper end of the valve body portion 44 (in the embodiment shown in FIG. One end of an elastic connecting piece 45 that connects the valve body portion 44 and the external fitting cylinder portion 40 is connected to the flange portion 44a) of the body portion 44. A plurality of elastic connecting pieces 45 are provided at intervals in the circumferential direction, and three elastic connecting pieces 45 are provided in the illustrated example, and each elastic connecting piece 45 extends curvedly along the circumferential direction. Further, the positions of both ends of the elastic connecting piece 45 in the container axis O direction are the same.
The valve body portion 44, the external fitting cylinder portion 40, the elastic connecting piece 45, and the air valve portion 41 are integrally formed to constitute a connecting body 48.

  The elastic connecting piece 45 allows the valve body portion 44 to be displaced along the container axis O direction by elastically deforming (in this specification, the elastic connecting piece 45 is elastically deformed in this way. The displacement of the valve body 44 is expressed as an elastic displacement). When there are a plurality of elastic connection pieces 45 (three in the illustrated example) as in the present embodiment, these elastic connection pieces 45 are preferably arranged at equal intervals in the circumferential direction (see FIG. 3). If the elastic connecting pieces 45 are arranged at equal intervals in this way, the valve body 44 when elastically displaced is prevented from being inclined (twisted) with respect to the plane perpendicular to the container axis O. Thus, the smooth displacement of the valve body 44 can be assisted (see FIGS. 9 and 10).

  When the valve body portion 44 is elastically displaced, the elastic connection piece 45 is inclined as a whole while being elastically deformed by being twisted in part (see FIG. 10). At this time, a part of the elastic connecting piece 45 itself is twisted (twisted), and the whole is extended according to the state, and the elastic restoring force of the elastic connecting piece 45 causes the valve body portion 44 to move. It acts as a force for restoring displacement (return) to the position before displacement. It should be noted that the valve body 44 may be rotated in the circumferential direction (clockwise or counterclockwise) around the container axis O during the elastic displacement or restoring displacement.

  In addition, the elastic connecting piece 45 of the present embodiment is curved and extends along the circumferential direction as described above, and the valve body portion 44 is positioned on the upper end opening surface of the through hole 42 (container shaft). In the state of being restored and displaced inward of the inner container 11 along the O direction), between the valve body portion 44 and the external fitting cylinder portion 40 (in the embodiment in FIG. 9, the flange portion 44a of the valve body portion 44 and the outside It will be in a state of being simply accommodated in a narrow gap (between the inner peripheral surface of the fitting tube portion 40).

Next, the operation of the discharge container 10 configured as described above will be described.
As shown in FIG. 4, when discharging the contents M from the discharge container 10, first, the overcap 16 is removed from the discharge cap 15. Thereafter, with the discharge container 10 tilted so that the discharge port 14 faces downward, the discharge container 10 is pushed inward in the radial direction to squeeze (elastically deform) the inner container 11 into the outer container 12. Also deform and reduce the volume.

  Then, the pressure in the inner container 11 rises, and the content M in the inner container 11 presses the valve body portion 44 through the through hole 42, so that the elastic connecting piece 45 is elastically deformed and the valve body portion 44 is moved. The communication hole 43 is opened by being elastically displaced toward the outside of the inner container 11 along the container axis O direction. As a result, the content M in the inner container 11 is discharged to the outside through the through hole 42, the communication hole 43, the outer fitting cylinder portion 40, and the discharge port 14.

  Thereafter, when the pushing force to the valve body 44 by the contents M in the inner container 11 is weakened by stopping or releasing the pushing of the discharge container 10, the elastic restoring force of the elastic connecting piece 45 causes the valve The body part 44 is restored and displaced inside the inner container 11 along the container axis O direction.

  At this time, as shown in FIG. 5, when the valve body portion 44 enters the communication hole 43, the outer peripheral surface of the valve body portion 44 is in sliding contact with the inner peripheral surface of the communication hole 43 and the communication hole 43 is closed. Thereby, an inner space 46 in which the contents M that have not been returned to the inner container 11 remain is formed between the main body cylinder member 23 and the inner plug member 21. The inner space 46 communicates with the discharge port 14, and the valve body portion 44 is a part of the drawing wall, and the communication with the communication hole 43 is blocked by the valve body portion 44.

  Then, after the inner space 46 is formed in this way, when the valve body portion 44 continues to be restored and slid along the container axis O in the communication hole 43, the valve body portion 44 is restored. Along with this, the internal volume of the internal space 46 increases. As a result, the contents M in the discharge port 14 can be drawn into the inner space 46, and the air A can be sucked into the discharge port 14 from the outside.

Here, when the pressure of the container main body 13 is released in a state where the communication hole 43 is closed by the valve body portion 44, the outer container 12 tends to be restored and deformed while the inner container 11 is reduced in volume. At this time, a negative pressure is generated between the inner container 11 and the outer container 12, and this negative pressure acts on the air valve part 41 through the intake hole 19, thereby opening the air valve part 41. Then, outside air is sucked between the outer container 12 and the inner container 11 through the outside air introduction hole 34, the outside air circulation hole 28, the communication groove 20 and the suction hole 19. When the internal pressure between the outer container 12 and the inner container 11 rises to atmospheric pressure, the air valve portion 41 is restored and deformed to shut off the intake hole 19 and the outside. Thereby, the volume reduction shape of the inner container 11 is maintained after the contents M are discharged.
From this state, when the outer container 12 of the container body 13 is squeezed again, the air valve 41 is in a shut-off state, so that the internal pressure between the outer container 12 and the inner container 11 becomes a positive pressure. The inner container 11 is reduced in volume by the pressure, and the contents M are discharged by the above-described action.

  In addition, after discharging the contents M and before closing the communication hole 43 by the valve body portion 44, when the pushing of the discharge container 10 is not only stopped but also released, the inner container 11 follows the outer container 12. Then try to restore and transform. Then, the pressure in the inner container 11 is reduced and a negative pressure is generated, and this negative pressure acts on the valve body part 44, so that the valve body part 44 is placed inside the inner container 11 along the container axis O direction. Therefore, it can be restored and displaced smoothly.

  As described above, according to the discharge container 10 according to the present embodiment, after the content M is discharged, the content M in the discharge port 14 is drawn into the inner space 46 and air is discharged into the discharge port 14 from the outside. Since A can be sucked, it is possible to suppress the contents M that have not been returned to the inner container 11 from remaining in the discharge port 14. Thereby, after discharge of the content M, it can suppress that the content M leaks from the discharge outlet 14. FIG.

  Further, since the through hole 42 has a smaller diameter than the communication hole 43, even if the valve body portion 44 is unintentionally displaced toward the inside of the inner container 11 along the axial direction, the valve body portion 44 is In 47, it comes into contact with a portion located on the inner side in the radial direction with respect to the communication cylinder portion 22, and the displacement of the valve body portion 44 can be restricted.

Further, as in the present embodiment, when the valve body 44 is in contact with the stopper body 47 when the discharge container 10 is not operated, the communication hole 43 and the through hole 42 are communicated by the valve body 44. Can be blocked.
Furthermore, in this case, when the valve body 44 is restored and displaced after the contents M are discharged and the inner space 46 is formed as described above, the valve body 44 moves through the communication hole 43 into the container shaft. It can slide over the entire length in the O direction. As a result, the internal volume of the inner space 46 can be reliably increased, and the above-described effects can be remarkably achieved.

Moreover, since the inner seal cylinder part 37 is provided in the overcap 16, it can suppress that the content M leaks out from the discharge outlet 14 in the state which closed the overcap 16. FIG.
Further, as described above, after the contents M are discharged, the contents M that have not been returned to the inner container 11 are less likely to remain in the discharge port 14, so that the overcap 16 is discharged after the contents M are discharged. 15, when the inner seal cylinder portion 37 is fitted into the discharge port 14, the content M is pushed out of the discharge port 14 by the inner seal cylinder portion 37, or the content is stored in the inner seal cylinder portion 37. It can suppress that the thing M adheres.

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, the discharge port 14 may be arranged coaxially with the container axis O as in the discharge container 50 shown in FIG. Further, the axis of the discharge port 14 may be inclined with respect to the container axis O.

  Further, as in the discharge container 50 shown in FIG. 6, an auxiliary cylinder portion 51 whose inside communicates with the discharge port 14 is provided projecting toward the communication hole 43 side at the opening peripheral portion of the discharge port 14 in the main body cylinder member 23. May be. The auxiliary cylinder portion 51 protrudes downward on the side of the communication hole 43 along the container axis O direction, and the lower end portion 37 a of the inner seal cylinder portion 37 is fitted into the auxiliary cylinder portion 51. Are combined. That is, the inner seal cylinder part 37 is integrally fitted inside both the discharge port 14 and the auxiliary cylinder part 51.

According to the discharge container 50, the auxiliary cylinder portion 51 whose inside communicates with the discharge port 14 is provided on the peripheral edge portion of the discharge port 14 in the main body cylinder member 23 so as to protrude toward the communication hole 43. 7, after the discharge of the contents M, when the external air A is sucked into the discharge port 14, the air A is further drawn from the discharge port 14 toward the communication hole 43. In addition, the air A is drawn into the auxiliary cylinder portion 51. The air A thus drawn into the auxiliary cylinder 51 is drawn deeply toward the communication hole 43 in the container axis O direction, which is the axial direction of the discharge port 14, and in the radial direction of the discharge port 14. Difficult to diffuse.
Therefore, the air A is sucked not only into the discharge port 14 but also into the auxiliary cylinder portion 51, and after the content M is discharged, the content M that has not been returned to the inner container 11 is discharged into the discharge port 14 and the auxiliary cylinder portion 51. It is possible to effectively suppress the leakage of the contents M from the discharge port 14 by suppressing the remaining in each of the above.

Further, since the contents M that have not been returned to the inner container 11 after the discharge of the contents M can be suppressed from remaining inside the discharge port 14 and the auxiliary cylinder portion 51, the inner seal cylinder portion can be suppressed. Even if 37 is not extended into the discharge port 14 but into the auxiliary cylinder part 51, the content M is pushed out of the discharge port 14 by the inner seal cylinder part 37, or the content is stored in the inner seal cylinder part 37. It can suppress that the thing M adheres.
In this way, the inner seal cylinder part 37 reaches the inside of the auxiliary cylinder part 51 and is integrally fitted into both the discharge port 14 and the auxiliary cylinder part 51 so that the overcap 16 is closed. It is possible to reliably prevent the contents M from leaking from the discharge port 14 unexpectedly.

  Moreover, in the said embodiment, although the position of the container axis O direction of the both ends of the elastic connection piece 45 shall be equal, it is not restricted to this. For example, like the connecting body 60 shown in FIG. 8, the elastic connecting piece 45 gradually moves toward the outside of the inner container 11 along the container axis O direction as it goes from the valve body part 44 side to the outer fitting cylinder part 40 side. May be.

  According to the discharge container including the connecting body 60, the elastic connecting piece 45 gradually moves toward the outside of the inner container 11 along the container axis O direction as it goes from the valve body part 44 side to the outer fitting cylinder part 40 side. Therefore, when the valve body portion 44 is elastically displaced toward the outside of the inner container 11 along the container axis O direction, an elastic restoring force can be effectively applied to the valve body portion 44.

  As described above, since an elastic restoring force can be effectively applied to the valve body portion 44, for example, when the discharge container is unexpectedly pushed slightly inward in the radial direction, the valve body It becomes possible to suppress that the part 44 act | operates. Thereby, it can suppress that the content M discharges by incorrect operation.

  Further, as described above, an elastic restoring force can be effectively applied to the valve body portion 44. Therefore, when the content M is discharged, the content M in the inner container 11 is pushed onto the valve body portion 44. When the pressure is weakened, the valve body 44 can be smoothly restored and displaced inward of the inner container 11 along the container axis O direction, and the above-described effects can be reliably achieved.

  In the embodiment, when the contents M are discharged from the discharge container 10, the discharge container 10 is pushed inward in the radial direction in a state where the discharge container 10 is inclined so that the discharge port 14 faces downward. However, the present invention is not limited to this. For example, the content M may be discharged from the discharge port 14 simply by tilting the discharge container 10 to the discharge posture. In this case, for example, it is possible to adopt a configuration in which the elastic coupling piece 45 is elastically deformed by the weight of the contents M acting on the valve body portion 44 in the discharge posture.

In the above embodiment, the overcap 16 is connected to the discharge cap 15 via the hinge 39. However, the present invention is not limited to this, and the overcap 16 is detachably undercut fitted to the discharge cap 15. It is also possible to adopt other configurations.
Furthermore, in the said embodiment, although the inner seal cylinder part 37 fitted in the discharge outlet 14 shall be cylindrical, it may not be cylindrical, for example, a solid pin shape may be sufficient.
Furthermore, the inner seal cylinder part 37, the outer seal cylinder part 38, and the overcap 16 may be omitted.

  Moreover, in the said embodiment, although the valve body part 44 shall be formed in the bottomed cylindrical shape, it is not restricted to this. For example, it may be formed in a solid lump shape, a plate shape, a top tube shape without a bottom wall, etc., and if the communication between the discharge port 14 and the inner container 11 can be switched, The shape is not limited.

  In the above-described embodiment, the communication hole 43 is arranged coaxially with the container axis O. However, the present invention is not limited to this. For example, the axis of the communication hole 43 and the container axis O may be parallel and shifted in the radial direction. Further, the axis of the communication hole 43 may be inclined with respect to the container axis O. In this case, the communication hole 43 is slidably fitted in the communication hole along the axial direction, and is elastic along the axial direction. A valve body portion that is displaced to open and close the communication hole can be provided.

  Furthermore, in the said embodiment, although the communicating hole 43 shall be comprised by the inside of the communicating cylinder part 22, it is not restricted to this, For example, the communicating cylinder part 22 is not provided and the communicating hole 43 is provided. May be constituted by the through hole 42. In this case, a valve body portion that is slidably fitted along the axial direction in the through hole and elastically displaced along the axial direction to open and close the communicating hole can be provided.

  Moreover, in the said embodiment, although the internal thread part 30 of the main body cylinder member 23 of the discharge cap 15 was screwed by the external thread part 29 of the opening | mouth part 13a of the container main body 13, it is not limited to this. For example, the discharge cap 15 may be attached to the mouth portion 13a by forming fitting protrusions on the mouth portion 13a of the container body 13 and the main body cylinder member 23 and fitting them undercut.

  Moreover, in the said embodiment, the intake hole 19 is formed in the outer upper cylinder part 17a, the air valve part 41 is provided in the intermediate part in the container axis O direction of the external fitting cylinder part 40, and the external air introduction hole 34 is connected. Although it is assumed that the ring portion 33 is formed, the present invention is not limited to this. For example, an air intake hole is formed in the bottom of the outer container, and a bottomed cylindrical body in which an outside air introduction hole is formed is sealed in a sealed state on the bottom of the outer container, and the bottomed cylindrical body has an air valve portion. It is also possible to adopt a configuration provided with.

  In the above-described embodiment, the container body 13 is a so-called Delami bottle in which the inner container 11 is detachably laminated on the inner surface of the outer container 12, but is not limited thereto. The container may be a double container formed separately from the container.

  Moreover, in the said embodiment, although the specific shape of the inner seal cylinder part 37 extended toward the downward direction from the overcap 16 was not mentioned, this inner seal cylinder part 37 is covered with the overcap 16 closed. It is also preferable to set the length and shape so as to suppress the elastic displacement of the valve body portion 44 in the state. For example, in the discharge container 70 shown in FIG. 11, the end portion (lower end portion 37 a) of the inner seal cylinder portion 37 comes into contact with a part of the valve body portion 44 in the covered state. The valve body portion 44 is formed with a protruding portion 44b with which the end portion of the inner seal cylinder portion 37 abuts (see FIG. 11).

  Further, the discharge container 10 including the overcap 16 as in the above embodiment has a structure for avoiding the overflow of the contents M when the overcap 16 is closed to be covered. Is also preferable. Hereinafter, such a structure will be described with a specific example (see FIG. 10 and the like).

In the discharge container 70 shown in FIG. 10 and the like, the annular upper end surface of the communication cylinder portion 22 abuts on an annular flange portion 44a projecting radially outward from the upper end portion of the valve body portion 44, and the valve It functions as a valve seat (valve retainer) 22a that receives the body 44. At this time, the bottom surface of the valve body portion 44 may not contact the portion of the plug main body 47 that is located on the inner side in the radial direction than the communication tube portion 22. A portion of the valve seat 22a that contacts the valve body portion 44 may be provided with a flow allowance groove 22b that allows the content M to flow (FIGS. 10, 12, and 13). Etc.). After the valve body 44 is seated on the valve seat 22a, the flow allowance groove 22b returns the content M remaining in the inner space 46 into the inner container 11, and in the final stage, the content is increased by surface tension. It is preferable to set the size such that M closes the flow-permissible groove 22b (blocks air flow). It should be noted that at least a part of the contents remaining in the inner space 46 may be configured to be returned to the inner container by the flow allowance groove 22b.
Further, the specific shape and the number of the distribution allowable grooves 22b are not particularly limited.

  In general, when the contents M remain in the inner space 46 when the overcap 16 is closed and covered, the inner seal cylinder portion 37 that enters the discharge port 14 and tries to fit the The action of pushing out the contents M can occur. However, in the discharge container shown in FIG. 10 and the like, the contents M collected in the vicinity of the discharge port 14 and in the inner space 46 may flow through the flow permission groove 22b and return to the inner container 11 through the through hole 42. it can. Therefore, when the overcap 16 is closed to be covered, it is possible to prevent the contents M from overflowing and the inside of the overcap 16 and the surface of the discharge cap 15 from becoming dirty.

Moreover, in the said embodiment, although the detailed description about restricting the elastic displacement amount of the valve body part 44 was not carried out in detail, the displacement amount regulation which restricts the elastic displacement amount of the said valve body part 44 to the main body cylinder member 23, for example is carried out. A portion (valve stopper) 23c may be formed (see FIGS. 11, 14, and 15). The displacement amount restricting portion 23c is, for example, a plurality of protrusions (for example, three locations) formed around the discharge port 14 on the back surface (the surface facing the inside) of the top wall portion 23b of the main body cylinder member 23 having a top tube shape. (See FIG. 11 and the like).
In this way, by configuring the displacement amount restricting portion 23c with a plurality of protrusions, the displacement limit position of the valve body portion 44 can be limited, and the discharge port is not blocked even at this position, and the distance between the protrusions is limited. Therefore, the contents M can be surely discharged.

  Moreover, in the said embodiment, although the valve body part 44 and the external fitting cylinder part 40 were connected with the elastic connection piece 45, this is only an example of a suitable structure, and depending on the structure of the discharge container 10, a communicating cylinder is used. A tubular member other than the external fitting cylinder part 40 and the valve body part 44 arranged coaxially with the part 22 may be connected. In short, according to the elastic connecting piece 45, the valve body portion 44 and the cylindrical member that slidably accommodates the valve body portion 44 can be connected. Is just an example of the tubular member.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

M Contents O Container axis (axis)
10, 50, 70 Discharge container 11 Inner container 12 Outer container 13 Container body 13a Mouth part 14 Discharge port 15 Discharge cap 16 Overcap 19 Air intake hole 21 Inner plug member 22 Communication cylinder part 22a Valve seat 22b Flow permissible groove 23 Main body cylinder member 23c Displacement amount regulation part 34 Outside air introduction hole 37 Inner seal cylinder part (seal part)
41 Air valve part 42 Through-hole 43 Communication hole 44 Valve body part 45 Elastic connection piece 47 Plug body

Claims (2)

A flexible inner container that accommodates the contents and deforms by deformation as the contents decrease, and the inner container is provided with an intake hole that sucks outside air between the inner container and the inner container. A container body having an outer container;
A discharge cap attached to the mouth of the container body and having a discharge port for discharging the contents;
A discharge container comprising an air valve portion for opening and closing the intake hole,
The discharge cap includes an inner plug member that closes the mouth portion, and a cylindrical body tube member that covers the inner plug member and has the discharge port formed therein.
The inner plug member is formed with a communication hole communicating the discharge port and the inside of the inner container,
In the communication hole, a valve body portion that is elastically displaced along the axial direction of the communication hole to open and close the communication hole is disposed.
In a part of the valve seat of the valve body portion that comes into contact with the valve body portion, a flow allowing groove that allows the content to flow is formed,
A displacement amount restricting portion that abuts on the valve body portion slidable along the axial direction and restricts an elastic displacement amount of the valve body portion is formed by a plurality of protrusions provided on the main body cylinder member. A discharge container characterized by comprising:   The inner plug member is
  A plug body in which an outer peripheral edge portion is disposed on the opening end of the mouth portion, and a through-hole opened in the inner container is provided,
  A standing tube from the plug body, the through-hole is opened inside, and the inside is formed as the communication hole;
  The valve body part is connected to a cylindrical member arranged coaxially with the communicating cylinder part by an elastic connecting piece that is elastically deformed,
  2. The discharge container according to claim 1, wherein the plurality of elastic connecting pieces are arranged at equal intervals in a circumferential direction centering on an axial direction of the communication hole.