JP2016141412A - Double container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container capable of preventing refilling of contents.SOLUTION: An inside plug arranged within a mouth 3 of a container body 2 is provided. The inside plug 28 is provided with a partition wall 33 in which an opening 32 for making contents pass toward a pour-out passage R is formed, and a peripheral wall 29 which continues into an outer peripheral edge of the partition wall 33 and which is arranged along an inner peripheral surface of the mouth 3. A locking part 34 for inhibiting the inside plug 28 from coming off the inside of the mouth 3 is provided between the peripheral wall 29 and the inner peripheral surface of the mouth 3.SELECTED DRAWING: Figure 1

Description

  The present invention includes a container body in which an inner layer body capable of volume reduction 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, and the pouring cap is opened and closed by a check valve. In particular, it is intended to prevent refilling of the contents with respect to a double container provided with a possible content outlet.

  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 and a dispensing cap that can be attached to and detached from the mouth of the container body;
The container body includes an outer layer body having an outside air introduction hole and an inner layer body arranged inside the outer layer body,
The inner layer body introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole while volume-reducing and deforming as the contents are poured out,
The pouring cap is a double container having a pouring path for the contents that can be opened and closed by a check valve.
An internal stopper disposed in the mouth of the container body,
The inner plug includes a partition wall in which an opening for allowing the contents to pass toward the extraction path is formed, and a peripheral wall that is connected to the outer peripheral edge of the partition wall and is disposed along the inner peripheral surface of the mouth portion,
A double container characterized in that a locking portion is provided between the peripheral wall and the inner peripheral surface of the mouth portion to prevent the inner plug from coming out of the mouth portion.

2. An annular protrusion is formed on the inner peripheral surface of the mouth of the container body,
On the outer peripheral surface of the peripheral wall of the inner plug, as the inner plug is inserted into the mouth portion, the inner plug is elastically deformed toward the inner peripheral side to overcome the annular protrusion, and by restoration from the elastic deformation An annular tongue piece that is locked to the annular protrusion, and an annular convex portion that abuts the annular protrusion after the annular tongue gets over the annular protrusion and prevents further movement of the inner plug in the insertion direction. The double container according to 1 above, which is formed.
The annular protrusion, the annular tongue piece, and the annular convex portion can be provided continuously or intermittently in the circumferential direction, respectively.

3. The pouring cap includes a fitting cylinder fitted into the peripheral wall of the inner plug so as to be able to be pulled out.
The inner plug is disposed in the mouth portion so that it cannot be pulled out by attaching the pouring cap to the mouth portion of the container body with the fitting tube fitted in the peripheral wall. Double container.

  According to the present invention, in a state where the pouring cap is attached to the mouth portion of the container body, the contents are poured out to the outside through the opening formed in the partition wall of the inner plug and the pouring path provided in the pouring cap. can do. Moreover, even if the dispensing cap is removed from the mouth portion of the container body, the inside plug that is prevented from coming out is disposed in the mouth portion. it can.

  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 one Embodiment of this invention. It is a longitudinal cross-sectional view which shows the mode of the opening | mouth part at the time of removing the extraction | pouring cap from the opening | mouth part of a container main body about the modification of the double container of FIG. It is a partial longitudinal cross-sectional view of the double container of FIG. 1, and shows the state at the time of mounting | wearing the extraction | pouring cap which attached the inner stopper to the opening part of the container main body. It is a partial longitudinal cross-sectional view of the double container of FIG. 1, and shows the state when the extraction cap is removed from the mouth of the container body. It is a top view which shows a mode that the opening part of the container main body was seen from upper direction in the state of FIG. It is a perspective view which shows a mode that the opening part of the container main body was seen from diagonally upward in the state of FIG. It is a longitudinal cross-sectional view of the double container which concerns on other embodiment of this invention. It is a figure which shows the stopper of the double container of FIG. 7, (a) is a top view, (b) is sectional drawing which follows the AA line of (a). It is a longitudinal cross-sectional view of the double container of FIG. 7, and shows a state when the dispensing cap attached with the inner stopper is attached to the mouth of the container body. It is a longitudinal cross-sectional view of the double container of FIG. 7, and shows a state when the extraction cap is removed from the mouth of the container body.

Hereinafter, with reference to FIGS. 1-6, the double container which concerns on one 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 this example, the container body 2 includes 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. It has a bottle shape. 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.

  Further, in this example, the outside air introduction hole 5 is formed in the mouth portion 3, through holes 10 and 11 provided in the pouring cap 4, and a mounting cylinder 12, which will be described later, of the mouth portion 3 and the pouring cap 4. The outside air is guided to the outside air introduction hole 5 and introduced between the outer layer body 6 and the inner layer body 7 through the gap (including the spiral gap formed between the threads). 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. Further, instead of providing the outside air introduction hole 5 in the mouth portion 3, it is also possible to provide it in the body portion 9 or the bottom portion.

  The dispensing cap 4 includes a mounting cylinder 12 that is screwed into 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 screwing. Moreover, the extraction | pouring cap 4 consists of the cap main body 13, the valve member 14, and the inner cap member 15 in this example.

  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 example, 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 with 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, a bottom wall 25 is continuously provided on the inner peripheral side of the outer cylinder 24. An opening 26 is formed at the center of the bottom wall 25, and a valve seat of the check valve 8 is constituted by a peripheral edge portion of the opening 26. A fitting tube 27 that protrudes downward while forming an annular shape is formed on the outer peripheral side of the opening 26. The fitting cylinder 27 is fitted in a peripheral wall 29 of the inner plug 28 described later so as to be able to be pulled out.

  An annular groove 30 is formed on the upper surface side of the fitting cylinder 27, and the lower part of the tubular wall 21 of the valve member 14 is fitted in the annular groove 30. On the outer peripheral side of the fitting cylinder 27, 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.

  Therefore, in this example, the content extraction path R is defined by the extraction cylinder 19 and the top wall 16 of the cap body 13, the cylinder wall 21 of the valve member 14, and the bottom wall 25 and the opening 26 of the inner cap member 15. ing.

  Further, the double container 1 includes an inner plug 28 disposed in the mouth 3 of the container body 2. The inner plug 28 includes a partition wall 33 formed with an opening 32 through which the content passes toward the dispensing path R, and a peripheral wall 29 that is connected to the outer peripheral edge of the partition wall 33 and is disposed along the inner peripheral surface of the mouth portion 3. It has. A locking portion 34 is provided between the peripheral wall 29 and the inner peripheral surface of the mouth portion 3 to prevent the inner plug 28 from slipping out of the mouth portion 3. The locking portion 34 may be of any structure that can prevent the inner plug 28 from being easily pulled out, and includes a portion that is held only by a sliding resistance force (friction resistance force) by press-fitting. In this example, the locking portion 34 is configured by an upper end edge 29 a of the peripheral wall 29 that is press-fitted into the inner peripheral surface of the mouth portion 3. That is, when trying to pull out the inner plug 28 from the inside of the mouth portion 3, the upper edge 29a of the press-fitted peripheral wall 29 bites into the inner peripheral surface of the mouth portion 3, and prevents the inner plug 28 from coming out. Yes. Moreover, in order to generate such bite into the inner peripheral surface of the mouth 3 more reliably, the upper end edge 29a of the peripheral wall 29 is formed so as to form an acute angle in the longitudinal section as shown in FIG. It is more preferable that the upper end edge of the locking protrusion 35 having a wedge-like longitudinal section provided on the outer peripheral surface of the peripheral wall 29 is formed. For example, the outer peripheral surface of the locking projection 35 is configured to be reduced in diameter from the upper end to the lower side, or the upper end surface of the peripheral wall 29 is inclined downward from the outer side in the radial direction to the inner side. They can be provided, or both configurations can be adopted.

  In place of such a configuration, the locking portion 34 is formed on the inner peripheral surface of the mouth portion 3 and engages with the peripheral wall 29 of the inner plug 28 as shown in FIG. You may comprise by the undercut 36 to block.

  As shown in FIGS. 1, 5, and 6, a plurality of vertical ribs 37 extending in the vertical direction and arranged at intervals in the circumferential direction are formed on the inner peripheral surface of the peripheral wall 29. Yes. Therefore, the above-described fitting cylinder 27 of the inner cap member 15 is fitted into the peripheral wall 29 of the inner plug 28 so as to be able to be pulled out via the plurality of vertical ribs 37.

  According to the double container 1 having such a configuration, as shown in FIG. 3, the pouring cap 4 is inserted into the opening of the container body 2 with the fitting tube 27 of the pouring cap 4 fitted into the peripheral wall 29 of the inner plug 28. By attaching to the part 3, as shown in FIG. 1, the inner plug 28 can be disposed in the mouth part 3 so as not to be pulled out. It is not always necessary to provide the fitting cylinder 27 in the dispensing cap 4. In the case where the insertion tube 27 is not provided, instead of such an assembling procedure, only the inner plug 28 is first disposed in the mouth portion 3 and then the dispensing cap 4 is attached to the mouth portion 3. .

  In the state where the pouring cap 4 is attached to the mouth portion 3 of the container body 2, the contents are passed through the opening 32 formed in the partition wall 33 of the inner plug 28 and the pouring path R provided in the pouring cap 4. Can be poured out to the outside world. Further, as shown in FIG. 4, even when the dispensing cap 4 is removed from the mouth 3 of the container body 2, the inside of the mouth 3 is prevented from being pulled out as shown in FIGS. 5 to 6. Since the stopper 28 is arranged, the refilling of the contents can be prevented by the partition wall 33 of the inner stopper 28.

  As described above, the double container 1 according to the present embodiment includes the inner plug 28 disposed in the mouth portion 3 of the container main body 2, and the inner plug 28 is an opening through which the content passes toward the extraction path R. 32 and a peripheral wall 29 connected to the outer peripheral edge of the partition wall 33 and disposed along the inner peripheral surface of the mouth portion 3, and between the peripheral wall 29 and the inner peripheral surface of the mouth portion 3. Is configured such that a locking portion 34 is provided to prevent the inner plug 28 from slipping out of the mouth portion 3. Therefore, according to the double container 1, even if the dispensing cap 4 is removed from the mouth part 3 of the container body 2, the inner plug 28 that is prevented from coming out is disposed in the mouth part 3. The refilling of the contents can be prevented by the partition wall 33 of the inner plug 28.

  Further, in the double container 1, the pouring cap 4 is provided with a fitting cylinder 27 that is detachably fitted into the peripheral wall 29 of the inner plug 28, and the pouring cap 4 is inserted in the state in which the fitting cylinder 27 is fitted into the peripheral wall 29. By attaching to the mouth part 3 of the container body 2, the inner plug 28 is arranged so as not to be pulled out into the mouth part 3. Therefore, according to the double container 1, it is possible to easily assemble the inner plug 28 into the mouth portion 3.

Next, with reference to FIGS. 7-10, the double container 1 'which concerns on other embodiment of this invention is illustrated and demonstrated in detail.
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 above-described embodiment. The outer layer body 6 having the outer air introduction hole 5 and the inner layer body 7 disposed inside the outer layer body 6 are provided, and the inner layer body 7 is deformed from the outside air introduction hole 5 while being reduced in volume as the contents are poured out. Outside air is introduced between the outer layer body 6 and the inner layer body 7, and the pouring cap 4 has a content pouring path R that can be opened and closed by a check valve 8.

  Also, in the present embodiment, the dispensing cap 4 is composed of the cap body 13, the valve member 14 and the inner cap member 15 in the same manner as in the above-described embodiment. The main body 13 is partitioned by the pouring cylinder 19 and the top wall 16, the cylinder wall 21 of the valve member 14, and the bottom wall 25 and the opening 26 of the inner cap member 15.

  Furthermore, the double container 1 ′ includes an inner plug 28 disposed in the mouth 3 of the container body 2 as in the above-described embodiment, and the inner plug 28 directs the contents to the extraction path R. A partition wall 33 having an opening 32 to be passed therethrough and a peripheral wall 29 connected to the outer peripheral edge of the partition wall 33 and disposed along the inner peripheral surface of the mouth portion 3, and the peripheral wall 29 and the inner peripheral surface of the mouth portion 3. A locking portion 34 for preventing the inner plug 28 from slipping out from the inside of the mouth portion 3 is provided. In this example, as shown in FIG. 8, the opening 32 has a plurality of (mains) arranged at intervals in the circumferential direction on the side surface of the top-like cylindrical protrusion 38 formed at the center of the partition wall 33. In the example, four through holes 39 are formed.

  And in this embodiment, this latching | locking part 34 is formed in the outer peripheral surface of the cyclic | annular protrusion 40 (refer FIG. 7) formed in the inner peripheral surface of the opening | mouth part 3 of the container main body 2, and the peripheral wall 29 of the inner plug 28. FIG. The annular tongue piece 41 is formed. As the annular tongue piece 41 is inserted into the mouth portion 3 of the inner plug 28, the annular tongue piece 41 is elastically deformed toward the inner peripheral side to overcome the annular protrusion 40, and is locked to the annular protrusion 40 by restoration from the elastic deformation. It has come to be. In addition, although the annular protrusion 40 is provided continuously in the circumferential direction in this example, it may be provided intermittently in the circumferential direction. Further, as shown in FIG. 8, the annular tongue piece 41 is provided intermittently (eight in this example) in the circumferential direction in this example, but may be provided continuously in the circumferential direction.

  In addition, the outer peripheral surface of the peripheral wall 29 of the inner plug 28 abuts on the annular protrusion 40 after the annular protrusion 40 of the annular tongue piece 41 has been climbed (in this example, when it gets over), and further in the insertion direction of the inner plug 28. An annular convex portion 42 that prevents movement is formed. In addition, although the annular convex part 42 is intermittently provided in the circumferential direction in this example (eight in this example), it may be provided continuously in the circumferential direction.

  According to the double container 1 ′ having such a configuration, as shown in FIG. 9, the pouring cap 4 is attached to the container main body 2 in a state where the fitting tube 27 of the pouring cap 4 is fitted into the peripheral wall 29 of the inner plug 28. By attaching to the mouth portion 3, as shown in FIG. 7, the inner plug 28 can be disposed in the mouth portion 3 so as not to be pulled out. In the present embodiment as well, as in the case of the above-described embodiment, it is not always necessary to provide the fitting cylinder 27 in the dispensing cap 4. In the case where the insertion tube 27 is not provided, instead of such an assembling procedure, only the inner plug 28 is first disposed in the mouth portion 3 and then the dispensing cap 4 is attached to the mouth portion 3. .

  In the state where the dispensing cap 4 is attached to the mouth portion 3 of the container body 2, the contents are opened to the opening 32 (more specifically, the plurality of through holes 39) formed in the partition wall 33 of the inner plug 28. And the pouring path R included in the pouring cap 4 can be poured out to the outside world. Further, as shown in FIG. 10, even if the dispensing cap 4 is removed from the mouth 3 of the container body 2, the inside plug 28 that is prevented from coming out is disposed in the mouth 3. The refilling of the contents can be prevented by the partition wall 33 of the stopper 28. In this example, the opening 32 is constituted by a plurality of through holes 39 arranged at intervals in the circumferential direction on the side surface of the top-like cylindrical protrusion 38 formed in the center of the partition wall 33. Therefore, it becomes possible to prevent refilling of the contents more effectively.

  As described above, the double container 1 ′ (see FIG. 7) according to the present embodiment includes the inner plug 28 disposed in the mouth 3 of the container body 2, and the inner plug 28 dispenses the contents into the discharge path R. A partition wall 33 formed with openings 32 (more specifically, a plurality of through holes 39) to be passed to the peripheral wall, and a peripheral wall connected to the outer peripheral edge of the partition wall 33 and arranged along the inner peripheral surface of the mouth portion 3 29, and a locking portion 34 is provided between the peripheral wall 29 and the inner peripheral surface of the mouth portion 3 to prevent the inner plug 28 from coming out of the mouth portion 3. . Therefore, according to the double container 1 ′, even if the dispensing cap 4 is removed from the mouth 3 of the container body 2, the inside plug 28 that is prevented from being pulled out is disposed in the mouth 3. The refilling of the contents can be prevented by the partition wall 33 of the inner plug 28.

  Further, in the double container 1 ′, the pouring cap 4 is provided with a fitting cylinder 27 fitted into the peripheral wall 29 of the inner plug 28 so as to be removable, and the pouring cap 4 in a state where the fitting cylinder 27 is fitted into the peripheral wall 29. Is attached to the mouth portion 3 of the container body 2 so that the inner plug 28 is disposed in the mouth portion 3 so as not to be pulled out. Therefore, according to the double container 1 ′, it is possible to easily assemble the inner plug 28 into the mouth portion 3.

  Further, in the double container 1 ′, an annular protrusion 40 is formed on the inner peripheral surface of the mouth portion 3 of the container body 2, and the mouth portion 3 of the inner stopper 28 is formed on the outer peripheral surface of the peripheral wall 29 of the inner stopper 28. The annular tongue piece 41 that gets over the annular protrusion 40 by being elastically deformed toward the inner peripheral side and inserted into the annular protrusion 40 and is locked to the annular protrusion 40 by restoration from the elastic deformation, and the annular tongue piece 41 An annular protrusion 42 is formed which contacts the annular protrusion 40 after overcoming the annular protrusion 40 and prevents further movement of the inner plug 28 in the insertion direction. Therefore, according to the double container 1 ′, it is possible to prevent not only the movement of the inner plug 28 arranged in the mouth 3 in the direction of withdrawal from the mouth 3 but also the movement in the insertion direction. It becomes possible.

  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 1,1 'Double container 2 Container main 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 | drum 10 Through-hole 11 Through-hole 12 Mounted cylinder 13 Cap body 14 Valve member 15 Inner cap member 16 Top wall 17 Hinge 18 Upper lid 19 Outlet tube 20 Pin 21 Tube wall 22 Check valve for introducing outside air 23 Fitting tube 24 Outer tube 25 Bottom wall 26 Opening 27 Inserting tube 28 Inner plug 29 Peripheral wall 29a Upper edge 30 Annular groove 31 Seal projection 32 Opening 33 Bulkhead 34 Engagement part 35 Engagement protrusion 36 Undercut 37 Vertical rib 38 Projection part 39 Through hole 40 Annular protrusion 41 Annular tongue piece 42 Annular convex part R Outlet path

Claims (3)

A container body and a dispensing cap that can be attached to and detached from the mouth of the container body;
The container body includes an outer layer body having an outside air introduction hole and an inner layer body arranged inside the outer layer body,
The inner layer body introduces outside air between the outer layer body and the inner layer body through the outside air introduction hole while volume-reducing and deforming as the contents are poured out,
The pouring cap is a double container having a pouring path for the contents that can be opened and closed by a check valve.
An internal stopper disposed in the mouth of the container body,
The inner plug includes a partition wall in which an opening for allowing the contents to pass toward the extraction path is formed, and a peripheral wall that is connected to the outer peripheral edge of the partition wall and is disposed along the inner peripheral surface of the mouth portion,
A double container characterized in that a locking portion is provided between the peripheral wall and the inner peripheral surface of the mouth portion to prevent the inner plug from coming out of the mouth portion. An annular protrusion is formed on the inner peripheral surface of the mouth of the container body,
On the outer peripheral surface of the peripheral wall of the inner plug, as the inner plug is inserted into the mouth portion, the inner plug is elastically deformed toward the inner peripheral side to overcome the annular protrusion, and by restoration from the elastic deformation An annular tongue piece that is locked to the annular protrusion, and an annular convex portion that abuts the annular protrusion after the annular tongue gets over the annular protrusion and prevents further movement of the inner plug in the insertion direction. The double container according to claim 1, which is formed. The pouring cap includes a fitting cylinder fitted into the peripheral wall of the inner plug so as to be able to be pulled out.
The inner plug is disposed in the mouth portion so as not to be pulled out by attaching the pouring cap to the mouth portion of the container body in a state where the fitting tube is fitted into the peripheral wall. Double container as described in.

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