JP6474644B2 - Double container - Google Patents

Description

  The present invention relates to a double container comprising a container body in which an inner layer body capable of volumetric deformation is disposed inside an outer layer body, and a pouring cap that can be attached to and detached from the mouth of the container body. It is intended to prevent refilling.

  Conventionally, as this type of double container, as described in, for example, Patent Document 1, a container body and a dispensing cap that can be attached to and detached from the mouth of the container body are provided, and the container body has an outside air introduction hole. An outer layer body and an inner layer body disposed on the inner side of the outer layer body, and the inner layer body is deformed and reduced in volume as the contents are poured out, and external air is passed between the outer layer body and the inner layer body through the outside air introduction hole. Introducing and dispensing caps are known that have a dispensing channel for contents that can be opened and closed by a check valve.

  According to such a double container, the contents can be protected from contact with the outside air, and the quality of the contents can be maintained well.

Japanese Patent Application Laid-Open No. 2003-122012

  However, the conventional double container as described in Patent Document 1 can be refilled with the contents by removing the pouring cap from the mouth of the container body. Even when used, the quality of the contents could not always be kept good.

  The present invention has been developed in view of the above problems, and an object thereof is to provide a double container capable of preventing refilling of contents.

That is, the gist configuration of the present invention is as follows.
1. A container body having an outer layer body having an outside air introduction hole, and an inner layer body disposed inside the outer layer body and containing contents;
A pouring cap provided with a pouring path for the contents, and removable from the mouth of the container body ;
An external air introduction valve capable of switching between an open state and a closed state of the external air introduction hole by displacing in the thickness direction of the outer layer body ,
The inner layer body is deformed and reduced in volume as the contents are poured, and introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole,
When the pouring cap is attached to the mouth, the outside air introducing hole is opened when a part of the pouring cap comes into contact with the outside air introducing valve and the outside air introducing valve is displaced to the inner peripheral side. State
The double container, wherein the outside air introduction hole is closed when the outside air introduction valve is displaced toward the outer periphery when the dispensing cap is not attached to the mouth.

2. A container body having an outer layer body having an outside air introduction hole, and an inner layer body disposed inside the outer layer body and containing contents;
A pouring cap provided with a pouring path for the contents, and removable from the mouth of the container body;
An elastic member that can be switched from the closed state to the open state the outside air introduction hole by elastic deformation
A double container comprising:
The elastic member is a plug member that is partially inserted into the outside air introduction hole,
The inner layer body is deformed and reduced in volume as the contents are poured, and introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole,
When the pouring cap is attached to the mouth, a part of the pouring cap comes into contact with the elastic member and elastically deforms the elastic member downward to open the outside air introduction hole. ,
The double container , wherein the elastic member is restored from an elastically deformed state and the outside air introduction hole is closed when the dispensing cap is not attached to the mouth.

4). The displacement to the outer peripheral side is performed by a restoring force of a support member that elastically supports the outside air introduction valve. Double container as described in.

6). A part of the pouring cap is a screw portion that engages the pouring cap with the mouth portion. To 5. The double container as described in any one of these.

  According to the present invention, when the dispensing cap is removed from the mouth portion of the container body, the outside air introduction hole is in a closed state and the inner layer body cannot be inflated, thereby preventing refilling of the contents.

  Therefore, according to this invention, the double container which can prevent the refilling of the contents can be provided.

It is a longitudinal cross-sectional view of the double container which concerns on 1st Embodiment of this invention. It is a figure explaining the open state and obstruction | occlusion state of an external air introduction hole in the double container which concerns on 1st Embodiment of FIG. It is a longitudinal cross-sectional view of the double container which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the AA cross section in the double container which concerns on 2nd Embodiment of FIG. It is a figure explaining the obstruction | occlusion state of the external air introduction hole in the double container which concerns on 2nd Embodiment of FIG. It is a longitudinal cross-sectional view of the double container which concerns on 3rd Embodiment of this invention. In the double container according to the third embodiment of FIG. 6, (a) shows an open state of the outside air introduction hole (slit), and (b) shows a closed state of the outside air introduction hole (slit).

  Hereinafter, with reference to FIGS. 1-2, the double container which concerns on 1st Embodiment of this invention is illustrated and demonstrated in detail.

  In the present specification, the vertical direction is based on the upright state of the container, and the side on which the mouth is arranged along the axis of the container (that is, the upper side in FIG. 1) is the upper side and the side on which the bottom is arranged. (That is, the lower side in FIG. 1) is the lower side.

  As shown in FIG. 1, the double container 1 according to the present embodiment includes a container body 2 and a dispensing cap 4 that can be attached to and detached from the mouth 3 of the container body 2. The container body 2 includes an outer layer body 6 having an outside air introduction hole 5 and an inner layer body 7 arranged inside the outer layer body 6. The inner layer body 7 is configured to introduce outside air between the outer layer body 6 and the inner layer body 7 through the outside air introduction hole 5 while being volume-reduced and deformed as the contents are poured out. The pouring cap 4 includes a content pouring path R that can be opened and closed by a check valve 8.

  More specifically, in the present embodiment, the container body 2 includes a mouth portion 3, a body portion (not shown) having a diameter larger than that of the mouth portion 3, and a bottom portion (not shown) that closes the lower portion of the body portion. ). The container body 2 has a configuration in which the inner layer body 7 is detachably laminated on the outer layer body 6 by blow molding a co-extruded two-layered parison. In addition, you may comprise the container main body 2 by combining after forming the outer layer body 6 and the inner layer body 7 separately instead of such a structure.

  On the outer peripheral surface of the mouth portion 3, a male screw portion 50 for mounting the dispensing cap 4 by screw engagement is provided. The male screw portion 50 engages with a female screw portion 51 (thread portion) provided on the inner peripheral surface of the mounting cylinder 12 of the dispensing cap 4.

  Further, in the present embodiment, the outside air introduction hole 5 is formed in the mouth portion 3, and the through holes 10 and 11 provided in the dispensing cap 4, and the mouth portion 3 and the mounting cylinder 12 of the dispensing cap 4 are provided. The outside air is guided to the outside air introduction hole 5 through the gap (including a spiral gap formed between the screw threads) and introduced between the outer layer body 6 and the inner layer body 7. In addition, a groove for ventilation passing through the screw thread up and down may be provided on the outer peripheral surface of the mouth portion 3 at the same position as the outside air introduction hole 5 in the circumferential direction, for example, to facilitate introduction of outside air.

  In the present embodiment, the rubber plug 52 (elastic member) is disposed through the outside air introduction hole 5. When the dispensing cap 4 is attached to the mouth 3 of the container body 2, the rubber stopper 52 is connected to the inner periphery of the attaching cylinder 12 of the dispensing cap 4 as shown in FIGS. It abuts on the female screw 51 provided on the surface and is elastically deformed by being pressed downward. As a result, the rubber plug 52 is compressed in the vertical direction, and a gap is generated between the outside air introduction hole 5 and the rubber plug 52, so that the outside air introduction hole 5 is in an open state in which outside air can be introduced.

  On the other hand, when the dispensing cap 4 is not attached to the mouth 3 of the container body 2, the force for pressing the rubber plug 52 does not act, so the rubber plug 52 is restored to the initial shape. As a result, the rubber plug 52 closes the outside air introduction hole 5 as shown in FIG. 2B, so that outside air is introduced between the outer layer body 6 and the inner layer body 7 through the outside air introduction hole 5. Absent.

  The dispensing cap 4 includes a mounting cylinder 12 that is screw-engaged with the mouth portion 3. In addition, you may comprise the mounting cylinder 12 so that it may mount | wear with the opening | mouth part 3 by fitting via an undercut instead of screw engagement. Moreover, the extraction | pouring cap 4 consists of the cap main body 13, the valve member 14, the inner cap member 15, and the valve body 53 in this embodiment.

  The cap body 13 includes a mounting cylinder 12, a top wall 16 that continues to the upper end of the mounting cylinder 12, and an upper lid 18 that is connected to the mounting cylinder 12 via a hinge 17. The top wall 16 is provided with a dispensing cylinder 19 and the above-described through hole 10. The upper lid 18 is provided with a pin 20 that closes the dispensing cylinder 19.

  The valve member 14 includes a cylindrical wall 21, a check valve 8 connected to the inner peripheral side of the cylindrical wall 21, and an outside air introduction check valve 22 connected to the outer peripheral side of the cylindrical wall 21. I have. In this embodiment, the check valve 8 is configured as a three-point valve in which the outer peripheral edge of a disc-shaped valve body is connected to the inner peripheral surface of the cylindrical wall 21 by three elastic arms. It is also possible to adopt. The check valve 22 for introducing outside air has a flange shape continuous in the circumferential direction. The upper part of the cylinder wall 21 is fitted in a fitting cylinder 23 that hangs down from the top wall 16 of the cap body 13.

  The inner cap member 15 is disposed between the top wall 16 of the cap body 13 and the mouth 3 of the container body 2 and is fitted to the inner peripheral surface of the mounting cylinder 12 of the cap body 13 via an undercut. The outer cylinder 24 is provided. Further, as shown in FIG. 1, at the lower end of the outer cylinder 24, a partition wall 33 extending in the inner circumferential direction, an insertion cylinder 27 extending in an annular shape upward from the inner peripheral side end of the partition wall 33, A bottom wall 25 extending from the upper end to the inner peripheral side is connected. An opening 26 is formed at the center of the bottom wall 25, and the valve seat of the check valve 8 is constituted by the peripheral edge of the opening 26.

  Further, an insertion protrusion 30 is formed on the outer peripheral side of the insertion cylinder 27, and the lower portion of the cylinder wall 21 of the valve member 14 is fitted between the insertion cylinder 27 and the insertion protrusion 30. Further, on the outer peripheral side of the fitting cylinder 27 and the fitting protrusion 30, an annular seal protrusion 31 that is fitted to the inner peripheral surface of the upper end of the mouth portion 3 is suspended. The aforementioned through hole 11 is formed in the lower part of the outer cylinder 24.

  The inner cap member 15 further includes a holding cylinder 54 that extends downward from the bottom wall 25 in an annular shape. The holding cylinder 54 has a cylindrical portion 54a, a reduced diameter cylindrical portion 54b, and an opening cylindrical portion 54c, and is formed in a cylindrical shape as a whole. In the present embodiment, the holding cylinder 54 is formed integrally with the inner cap member 15. However, the holding cylinder 54 is not limited to this aspect, and the holding cylinder 54 may be configured as a separate part from the inner cap member 15.

  In the present embodiment, a reduced diameter cylindrical portion 54b is integrally provided at the lower end of the cylindrical portion 54a. The cylindrical portion 54a is formed in a cylindrical shape having a substantially constant inner diameter, while the reduced diameter cylindrical portion 54b is formed in a tapered shape whose inner diameter is gradually reduced downward. In the case shown in the figure, a cylindrical opening tube portion 54 c is integrally provided at the lower end of the reduced diameter tube portion 54 b, and the inside of the opening tube portion 54 c constitutes the opening 55 of the holding tube 54.

The valve body 53 is formed in a spherical shape (ball) from steel, resin, or the like, and is disposed inside the holding cylinder 54. The valve body 53 has a diameter that is slightly smaller than the inner diameter of the holding cylinder 54, whereby the valve body 53 moves in the axial direction along the cylindrical part 54 a between the check valve 8 and the reduced diameter cylindrical part 54 b. It is free.

  In the present embodiment, the content extraction path R includes the extraction cylinder 19 and the top wall 16 of the cap body 13, the cylinder wall 21 of the valve member 14, the bottom wall 25 of the inner cap member 15, the openings 26 and 55, and the holding. It is partitioned by a cylinder 54.

  In the state where the dispensing cap 4 is attached to the mouth portion 3 of the container body 2, the rubber plug 52 abuts on the female screw portion 51 and elastically deforms, so that the outside air introduction hole 5 is in an open state in which outside air can be introduced. Become. By opening the upper lid 18 and pressing the body portion of the container body 2, the check valve 8 is displaced in the direction of the dispensing cylinder 19, and the contents can be poured out to the outside through the opening 26 and the dispensing path R. The valve body 53 moves to the dispensing cylinder 19 side by inclining the container body 2 so that the dispensing cylinder 19 faces downward or by an increase in the internal pressure of the inner layer body 7 due to the pressing of the trunk portion.

  After the contents are poured out, when the pressure on the body portion of the container body 2 is released, the inner layer body 7 maintains the volume reduction deformation as the contents decrease, while the outer layer body 6 is restored to its original shape due to rigidity. To do. At this time, since the outside air introduction hole 5 is in an open state, the outside air introduction check valve 22 is opened, and outside air is introduced from the outside air introduction hole 5 into the space between the outer layer body 6 and the inner layer body 7. By adopting this configuration, the contents can be protected from contact with the outside air, so that the quality of the contents can be maintained well. When the container body 2 is returned to the upright state, the valve body 53 moves toward the reduced diameter cylindrical portion 54b by its own weight. Thereby, since the content remaining inside the pouring cylinder 19 is drawn to the holding cylinder 54 side by negative pressure, dripping from the pouring cylinder 19 can be effectively prevented.

  On the other hand, in a state where the dispensing cap 4 is not attached to the mouth portion 3 of the container body 2, the rubber plug 52 is not pressed by the female screw portion 51, so that the original state is changed from the elastically deformed state as shown in FIG. Restore to shape. As a result, the rubber plug 52 closes the outside air introduction hole 5. As a result, even if the contents are refilled and the double container 1 is to be reused, when the dispensing cap 4 is removed from the container main body 2, the outside air introduction hole 5 is closed and the outside air between the outer layer body 6 and the inner layer body 7 is blocked. It remains encapsulated. Therefore, even if it is going to refill the contents in the inner layer body 7 that has been deflated by use, the inner layer body 7 cannot be inflated by the enclosed outside air, so the contents cannot be refilled.

  As described above, the double container 1 according to the present embodiment includes the outside air introduction hole 5 in the mouth 3 of the container body 2, and when the dispensing cap 4 is removed from the container body 2, the pressing force from the female screw part 51. Is opened, and the rubber plug 52 that has been elastically deformed is restored to its original shape. Since the outside air introduction hole 5 is closed by the restored rubber stopper 52 and the outside air filled between the outer layer body 6 and the inner layer body 7 cannot be discharged, refilling of the contents can be prevented. .

  In addition, according to the present embodiment, since the rubber plug 52 is configured to be elastically deformed by coming into contact with the female screw portion 51, the open / close switching of the outside air introduction hole 5 can be performed without adding a new component. it can.

  In addition, in this embodiment, although the structure which elastically deforms the rubber stopper 52 by the internal thread part 51 provided in the internal peripheral surface of the extraction | pouring cap 4 was employ | adopted, it is not limited to this aspect. For example, a step portion protruding further in the inner peripheral direction is provided on the inner peripheral surface of the pouring cap 4, and the step portion presses an elastic member such as the rubber plug 52 so that the outside air introduction hole 5 is opened. It may be configured.

  Next, with reference to FIGS. 3-5, the double container 1 which concerns on 2nd Embodiment of this invention is illustrated and demonstrated in detail.

  As shown in FIG. 3, the double container 1 according to this embodiment includes a container body 2 and a dispensing cap 4 that can be attached to and detached from the mouth 3 of the container body 2, as in the first embodiment. Yes. Below, it demonstrates centering on difference with 1st Embodiment.

  In the present embodiment, the container body 2 has a bottle shape including a mouth portion 3, a body portion 9 having a diameter larger than that of the mouth portion 3, and a bottom portion (not shown) that closes the lower portion of the body portion 9. ing.

  In the present embodiment, the outside air introduction valve 60 is disposed through the outside air introduction hole 5. As shown in FIG. 4, the outside air introduction valve 60 is elastically supported by holding arms 61 b provided at equal intervals on the circumference in the holding ring 61 a, and is configured to be displaceable mainly in the thickness direction of the outer layer body 6. Yes. And when the extraction | pouring cap 4 is mounted | worn with the opening | mouth part 3 of the container main body 2, as shown in FIG. 3, the external air introduction valve 60 is pressed by the internal peripheral surface of the extraction | pouring cap 4, and is displaced to an internal peripheral direction. doing. Thereby, a clearance gap arises between the external air introduction valve 60 and the outer layer body 6, and the external air introduction hole 5 will be in the open state in which inflow and outflow of external air are possible.

  On the other hand, when the pouring cap 4 is not attached to the mouth 3 of the container body 2, the force that presses the outside air introduction valve 60 to the inner peripheral side does not act. In this embodiment, since the outside air introduction valve 60 is elastically supported by the holding arm 61b, the outside air introduction valve 60 is displaced to the outer peripheral side by a restoring force that the holding arm 61b tries to return to the original shape. This displacement closes the gap between the outside air introduction valve 60 and the outside layer body 6 (see FIG. 5), and the outside air introduction hole 5 is in a closed state where inflow and outflow of outside air is impossible. Introduction of outside air between 6 and the inner layer body 7 is not performed.

  In a state where the extraction cap 4 is attached to the mouth 3 of the container body 2, the outside air introduction valve 60 is pressed by the inner peripheral surface of the extraction cap 4, and the outside air introduction hole 5 is opened. By opening the upper lid 18 and pressing the body portion 9 of the container body 2, the contents can be poured out to the outside through the opening 26 and the pouring path R.

  After the contents are poured out, when the pressure on the body portion of the container body 2 is released, the inner layer body 7 maintains the volume reduction deformation as the contents decrease, while the outer layer body 6 is restored to its original shape due to rigidity. To do. At this time, since the outside air introduction hole 5 is in an open state, the outside air introduction check valve 22 is opened, and outside air is introduced from the outside air introduction hole 5 into the space between the outer layer body 6 and the inner layer body 7. By adopting this configuration, the contents can be protected from contact with the outside air, so that the quality of the contents can be maintained well.

  On the other hand, in a state where the dispensing cap 4 is not attached to the mouth 3 of the container main body 2, the force that presses the outside air introduction valve 60 to the inner peripheral side does not work. Then, when the outside air introduction valve 60 is displaced to the outer peripheral side by the restoring force of the holding arm 61b, the outside air introduction hole 5 is in a closed state in which inflow and outflow of outside air are impossible. As a result, even if the contents are refilled and the double container 1 is to be reused, when the dispensing cap 4 is removed from the container main body 2, the outside air introduction hole 5 is closed and the outside air between the outer layer body 6 and the inner layer body 7 is blocked. It remains encapsulated. Therefore, even if it is going to refill the contents in the inner layer body 7 that has been deflated by use, the inner layer body 7 cannot be inflated by the enclosed outside air, so the contents cannot be refilled.

  Thus, the double container 1 according to the present embodiment includes the outside air introduction hole 5 in the mouth 3 of the container body 2, and the outside air introduction valve 60 is held when the extraction cap 4 is removed from the container body 2. By displacing to the outer peripheral side by the restoring force of the arm 61b, the outside air introduction hole 5 is closed. Thereby, since the external air filled between the outer layer body 6 and the inner layer body 7 cannot be discharged, the refilling of the contents can be prevented.

  Further, according to the present embodiment, since the holding arm 61b is configured to displace the outside air introduction valve 60 to the outer peripheral side, the outside air introduction hole 5 can be switched between opening and closing without adding new components. .

  In addition, in this embodiment, although the external air introduction valve 60 was pressed by the internal peripheral surface of the extraction cap 4, and the structure which makes the external air introduction hole 5 an open state was employ | adopted, it is not limited to this aspect. For example, a step portion that protrudes further in the inner peripheral direction is provided on the inner peripheral surface of the dispensing cap 4, and the outside air introduction hole 5 is opened by the step portion pressing the outside air introduction valve 60. Also good.

  In the present embodiment, the outside air introduction valve 60 is configured to be displaced to the outer peripheral side by the restoring force of the holding arm 61b in a state in which the dispensing cap 4 is not attached to the mouth 3 of the container body 2. The embodiment is not limited to this. The outside air introduction valve 60 may be supported by a supporting means having no restoring force, and the outside air introduction valve 60 may be displaced outward by separately applying an outward force.

  Next, with reference to FIGS. 6-7, the double container 1 which concerns on 3rd Embodiment of this invention is illustrated and demonstrated in detail.

  As shown in FIG. 6, the double container 1 according to the present embodiment includes a container body 2 and a dispensing cap 4 that can be attached to and detached from the mouth 3 of the container body 2, as in the first embodiment. Yes. Below, it demonstrates centering on difference with 1st Embodiment.

  In the present embodiment, a slit 62 (outside air introduction hole) is provided on the outer layer body 6 as an equivalent to the outside air introduction hole 5 in the first embodiment. The slits 62 are provided so as to extend in the circumferential direction of the container body 2 as shown in FIGS. And, as shown in FIG. 6, when the pouring cap 4 is attached to the mouth portion 3 of the container body 2, an internal thread portion 51 provided on the inner peripheral surface of the attaching cylinder 12 of the pouring cap 4, The step portion 63 provided on the outer peripheral surface of the mouth portion 3 comes into contact. At this time, the tensile stress that opens the slit 62 in the vertical direction can be generated by setting the lowermost male screw portion 50 and the step portion 63 to a predetermined distance.

  FIG. 7A is a view showing the shape of the slit 62 when the pouring cap 4 is attached to the mouth 3 of the container body 2. The outer layer body 6 is elastically deformed by the tensile stress to open the slit 62, and the slit 62 as the outside air introduction hole is in an open state in which the outside air can flow in and out.

  On the other hand, when the dispensing cap 4 is not attached to the mouth 3 of the container body 2, the tensile stress does not act. At this time, the outer layer body 6 is restored from the elastically deformed state, and the slit 62 is in a closed state where inflow and outflow of outside air cannot be performed as shown in FIG.

  In the present embodiment, as in the first embodiment, a valve body 53, a holding cylinder 54, and the like for preventing dripping from the dispensing cylinder 19 are provided.

  In a state where the dispensing cap 4 is attached to the mouth 3 of the container body 2, the outer layer body 6 comes into contact with the stepped portion 63 as described above, and an upward tensile stress acts on the slit 62, so that the open state is established. . By opening the upper lid 18 and pressing the body of the container body 2, the check valve 8 is displaced in the direction of the dispensing cylinder 19, and the contents can be poured out to the outside through the opening 26 and the dispensing path R.

  After the contents are poured out, when the pressure on the body portion of the container body 2 is released, the inner layer body 7 maintains the volume reduction deformation as the contents decrease, while the outer layer body 6 is restored to its original shape due to rigidity. To do. At this time, since the slit 62 as the outside air introduction hole is in an open state, the outside air introduction check valve 22 is opened, and outside air is introduced from the slit 62 into the space between the outer layer body 6 and the inner layer body 7. By adopting this configuration, the contents can be protected from contact with the outside air, so that the quality of the contents can be maintained well.

  On the other hand, when the dispensing cap 4 is not attached to the mouth 3 of the container body 2, the tensile stress that opens the slit 62 does not act. Therefore, the slit 62 that has been elastically deformed is in a closed state shown in FIG. Thus, even if the contents are refilled and the double container 1 is to be reused, the slit 62 is closed when the dispensing cap 4 is removed from the container body 2, and the outside air between the outer layer body 6 and the inner layer body 7 is sealed. Will remain. Therefore, even if it is going to refill the contents in the inner layer body 7 that has been deflated by use, the inner layer body 7 cannot be inflated by the enclosed outside air, so the contents cannot be refilled.

  As described above, the double container 1 according to the present embodiment includes the slit 62 as the outside air introduction hole in the mouth portion 3 of the container body 2, and the slit 62 is elastically deformed when the dispensing cap 4 is removed from the container body 2. Since the tensile stress that has been applied does not act, the slit 62 is restored to the closed state. Thereby, since the external air filled between the outer layer body 6 and the inner layer body 7 cannot be discharged, the refilling of the contents can be prevented.

  Moreover, according to this embodiment, since it comprised so that the internal thread part 51 and the step part 63 of the outer layer body 6 may be contact | abutted, the slit 62 as an external air introduction hole may be opened, Therefore A new component is added. The outside air introduction hole 5 can be switched between open and closed.

  In the present embodiment, when the extraction cap 4 is mounted, the female screw portion 51 is configured to contact the outer layer body 6 to open the slit 62. However, the present invention is not limited to this mode. For example, a step portion that protrudes further in the inner peripheral direction may be provided on the inner peripheral surface of the pouring cap 4, and the slit 62 may be opened when the step portion presses the outer layer body 6.

  The above description shows only one embodiment of the present invention, and it goes without saying that various modifications may be made within the scope of the claims.

DESCRIPTION OF SYMBOLS 1 Double container 2 Container body 3 Mouth part 4 Pouring cap 5 Outside air introduction hole 6 Outer layer body 7 Inner layer body 8 Check valve 9 Trunk part 10 Through hole 11 Through hole 12 Mounted cylinder 13 Cap body 14 Valve member 15 Inner cap member Reference Signs List 16 Top Wall 17 Hinge 18 Upper Lid 19 Outlet Tube 20 Pin 21 Tube Wall 22 Check Valve for Introducing Air 23 Fit Tube 24 Out Tube 25 Bottom Wall 26 Open 27 Fit Tube 30 Fit Projection 31 Seal Protrusion 33 Bulkhead 50 Male Thread 51 Female thread part (thread part)
52 Rubber stopper (elastic member)
53 Valve body 54 Holding cylinder 54a Cylindrical part 54b Reduced diameter cylindrical part 54c Opening cylinder part 55 Opening 60 Outside air introduction valve 61a Holding ring 61b Holding arm (supporting member)
62 Slit (Outside air introduction hole)
63 Step part R

Claims (4)

A container body having an outer layer body having an outside air introduction hole, and an inner layer body disposed inside the outer layer body and containing contents;
A pouring cap provided with a pouring path for the contents, and removable from the mouth of the container body ;
An external air introduction valve capable of switching between an open state and a closed state of the external air introduction hole by displacing in the thickness direction of the outer layer body ,
The inner layer body is deformed and reduced in volume as the contents are poured, and introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole,
When the pouring cap is attached to the mouth, the outside air introducing hole is opened when a part of the pouring cap comes into contact with the outside air introducing valve and the outside air introducing valve is displaced to the inner peripheral side. State
The double container, wherein the outside air introduction hole is closed when the outside air introduction valve is displaced toward the outer periphery when the dispensing cap is not attached to the mouth. A container body having an outer layer body having an outside air introduction hole, and an inner layer body disposed inside the outer layer body and containing contents;
A pouring cap provided with a pouring path for the contents, and removable from the mouth of the container body;
An elastic member capable of switching the outside air introduction hole from a closed state to an open state by elastic deformation ;
A double container comprising:
The elastic member is a plug member that is partially inserted into the outside air introduction hole,
The inner layer body is deformed and reduced in volume as the contents are poured, and introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole,
When the pouring cap is attached to the mouth, a part of the pouring cap comes into contact with the elastic member and elastically deforms the elastic member downward to open the outside air introduction hole. ,
The double container , wherein the elastic member is restored from an elastically deformed state and the outside air introduction hole is closed when the dispensing cap is not attached to the mouth. The displacement of the outer peripheral side, the outside air introduction valve is performed by the restoring force of the support member for elastically supporting, double container according to claim 1. The double container according to claim 2 , wherein a part of the pouring cap is a screw portion that engages the pouring cap with the mouth portion.

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