JP5813580B2 - Double container - Google Patents

Description

  The present invention relates to a double container that includes an inner layer body having a filling space for contents and an outer layer body that accommodates the inner layer body on the inside, and that contracts only the inner layer body as the contents are poured out. .

  As a container for storing cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning, etc., an inner layer body having a filling space for the contents, and an outer layer body for detachably storing the inner layer body The contents are poured out by pressing the body part of the outer layer body, while the body part is restored after releasing the pressure, and the outside layer is reduced by introducing outside air between the inner layer body and the outer layer body. A double container (also referred to as a delamination container) that can be used is known (see, for example, Patent Document 1). Since this kind of container can pour out the contents without replacing the contents in the filling space with the outside air, the contact between the contents and the outside air can be avoided as much as possible.

JP-A-10-45180

  The container described in Patent Document 1 has an opening (intake hole) for introducing outside air between an inner layer body (liquid filling bag) and an outer layer body (container body), and a valve body (intake valve) for the opening. The valve body is closed when the outer layer body is pressed, and the air between the inner layer body and the outer layer body is prevented from escaping from the opening to prevent the contents from being poured. It can be opened and opened when the outer layer is restored, and acts to contract only the inner layer by introducing air between them through the openings.

  By the way, there is a strong demand for low-priced products in the market, and this is no exception in the field of double containers, and you want to dispense the contents just by tilting the container without pressing the outer layer body. Therefore, it has been considered to remove the valve body for opening and to pour out the container simply by tilting the container using its own weight.

  However, as the contents are poured out, the inner layer gradually becomes depressurized and the inner layer becomes difficult to contract. Thus, the phenomenon that the contents are less likely to occur occurs in the second half of the period of use.

  An object of the present invention is to solve such a conventional problem, and its purpose is to allow the contents to be poured out by simply tilting the container without pressing the outer layer body. We are proposing a double container that can dispense the contents to the end.

The present invention includes an inner layer body having an upper opening connected to a content filling space, an outer layer body having an opening for accommodating the inner layer body inside and introducing outside air between the inner layer body and the contents inside An inner plug that holds a cylindrical portion that includes a spherical body that serves as a check valve for the flow path and that holds the cylindrical portion in the upper opening; A double container provided with a lid for pouring the contents from the tip opening of the outlet tube part,
The inner plug is provided with an outside air introduction hole leading to the filling space,
The lid is provided with a hinge that is swingably connected to the inner plug so that the outside air introduction hole communicates with the outside world when the lid is open, while the outside air is introduced when the lid is closed. The double container is characterized in that communication between the hole and the outside is prevented.

The inner plug has an annular portion that surrounds the tubular portion and includes the outside air introduction hole,
It is preferable that the lid includes a seal wall that abuts the annular portion in an airtight manner and closes the outside air introduction hole when the lid is closed.

  The inner layer and outer layer are provided with an inner plug and a lid that allows the contents to flow out through the inner plug distribution path to form a double container, and the inner plug is formed inside the inner layer. Since the outside air introduction hole leading to the space is provided, and the lid body is provided with a hinge that is swingably connected to the inner plug so that the outside air introduction hole communicates with the outside world in the open position of the lid body. The outside air can be introduced into the inner layer of the container, whereby the contents can be poured out simply by tilting the container. On the other hand, when the lid is displaced in the closed posture, communication between the outside air introduction hole and the outside is blocked, so that intrusion of outside air into the filling space can be prevented during normal use.

  When the inner plug is provided with an annular portion that surrounds the cylindrical portion and has an outside air introduction hole, and the lid is provided with a seal wall that comes into airtight contact with the annular portion in its closed position, the inside of the filling space during normal use It is possible to more reliably prevent the outside air from entering.

It is sectional drawing in the closed attitude | position of a cover body which shows embodiment of the double container according to this invention. It is sectional drawing which shows the state which removed the overcap from the state shown in FIG. 1, and displaced the cover body to the open attitude | position.

Hereinafter, the present invention will be described more specifically with reference to the drawings.
FIG. 1 is a cross-sectional view of a lid body in a closed position, showing an embodiment of a double container according to the present invention, and FIG. 2 is a state in which an overcap is removed from the state shown in FIG. It is sectional drawing which shows the state displaced to (b).

  In FIG. 1, reference numeral 10 denotes an inner layer body which is formed of, for example, a thin synthetic resin and has a filling space M for storing contents inside thereof. The upper end portion of the inner layer body 10 is an upper opening 11 connected to the filling space M.

  Reference numeral 20 denotes an outer layer body that forms the outer shell of the double container of the present invention. The outer layer body 20 is provided in the inner space so that the inner layer body 10 can be peeled off. Further, in the present embodiment, the mouth portion 21 of the outer layer body 20 is provided with an outward claw portion 22 at an upper portion thereof, and a screw portion 23 is provided below the outward claw portion 22. Although not shown, the outer layer body 20 is provided at the bottom of the outer layer body 20, for example, a bottom crack-like slit formed in the pinch-off portion where the inner layer body 10 and the outer layer body 20 are joined, or the mouth portion 21. (Hereinafter, these slits and holes are referred to as openings), and outside air is introduced between the inner layer body 10 and the outer layer body 20 through the openings to reduce the filling space M. it can.

  Reference numeral 30 denotes an inner plug that is attached to the mouth portion 21 of the outer layer body 20, and the inner plug 30 includes a cylindrical portion 40 that forms a flow path R of contents inside. In the present embodiment, the inner plug 30 includes a bottomed tubular annular portion 31 that surrounds the tubular portion 40 and is integrally connected in the middle in the axial direction of the tubular portion 40. Further, at least one outside air introduction hole 32 is provided from the bottom of the annular portion 31 to the cylindrical portion. The upper portion of the annular portion 31 is provided with a top wall 33 extending outward in the horizontal direction, and a peripheral wall 34 surrounding the upper portion of the mouth portion 21 is provided at the outer edge of the top wall 33. Further, the inner surface of the peripheral wall 34 is provided with an inward claw portion 35 that engages with the outward claw portion 22 of the outer layer body 20 and holds the inner plug 30 so as not to be pulled out. It is held in the upper opening 11 of the inner layer body 10. Instead of the undercut engagement by the outward claw portion 22 and the inward claw portion 35, the inner plug 30 may be held by, for example, screw engagement. Further, an annular seal portion 36 that comes into airtight contact with the inner layer body 10 is provided on the back surface of the top wall 33.

  A plurality of vertical ribs 41 extending along the axis of the cylindrical portion 40 are provided on the inner peripheral surface of the cylindrical portion 40 at intervals in the circumferential direction, and between the adjacent vertical ribs 41. A gap is formed in. Further, a protrusion 42 protruding toward the distribution path R side is provided on the upper portion of the vertical rib 41. Further, a conical inclined wall 43 having a diameter decreasing toward the filling space M is provided at the lower portion of the cylindrical portion 40. An injection port 44 that opens toward the filling space M is provided at the lower end of the inclined wall 43.

  A spherical body 50 is provided inside the cylindrical portion 40. In the posture in which the outer layer body 20 is erected as shown in FIG. 1, the spherical body 50 moves downward as shown by the solid line in the figure and abuts against the inclined wall 43 over the entire circumference. The distribution path R and the filling space M are not in communication. On the other hand, when the outer layer body 20 is tilted, the spherical body 50 moves to a position where the spherical body 50 is retained by the protrusion 42 as shown by a two-dot chain line in the drawing, and the flow path R and the filling space M communicate with each other. That is, the spherical body 50 functions as a check valve for the flow path R in cooperation with the cylindrical portion 40.

  Reference numeral 60 denotes a lid provided on the upper part of the inner plug 30. The lid body 60 includes an extraction cylinder portion 61 connected to the cylindrical portion 40, and the contents can be extracted from the tip opening 62 of the extraction cylinder portion 61 by tilting the outer layer body 20. In the present embodiment, the lower end portion of the dispensing tube portion 61 is extended so as to contact the inner peripheral surface of the tubular portion 40, thereby preventing leakage of the contents. Further, a top wall 63 extending outward in the horizontal direction is integrally connected to the dispensing tube portion 61, and the top wall 63 and the peripheral wall 34 of the inner plug 30 are integrally connected by a hinge h. Yes. Accordingly, the lid body 60 can be swung with respect to the inner plug 30 with the hinge h as a base point. A cylindrical seal wall 64 is provided on the back surface of the top wall 63 so as to be in airtight contact with the inner peripheral surface of the annular portion 31. Further, the lid body 60 includes a finger hook portion 65 for opening the lid body 60 on the side opposite to the side where the hinge h is provided.

  Reference numeral 70 denotes an overcap that houses the inner plug 30 and the lid 60 inside and is detachably held by the outer layer body 20. In the illustrated example, the overcap 70 is held by screwing the screw portion 71 provided on the inner surface of the outer peripheral wall into the screw portion 23 of the outer layer body 20, but undercut engagement instead of screw engagement. You may make it hold | maintain. In addition, a cylindrical plug portion 72 is provided at the center of the inner surface of the upper wall of the overcap 70 so as to contact the inner peripheral surface of the extraction tube portion 61 of the lid 60 and close the tip opening 62. Furthermore, since the rib 73 that contacts the top wall 63 of the lid 60 is provided on the outer surface of the upper wall of the overcap 70 in the screwing end region of the overcap 70, forgetting to close the lid 60 or over It is possible to effectively prevent a problem that the lid 60 opens carelessly in the cap 70.

  In the double container configured as described above, since the spherical body 50 is in contact with the inclined wall 43 over the entire circumference in the standing posture of the outer layer body 20 as described above, the contents in the filling space M It is possible to effectively prevent the possibility that an object will come into contact with the outside air.

  When the outer layer body 20 is tilted, the spherical body 50 is displaced to a position indicated by a two-dot chain line in FIG. 1, and the contents are introduced from the injection port 44 to the inside of the tubular portion 40, and a plurality of vertical ribs 41. It is poured out from the front end opening 62 of the dispensing cylinder part 61 through the space between them and the space surrounded by the cylindrical part 40 and the spherical body 50. The inner layer body 10 is provided on the outer layer body 20 so as to be peelable, and since outside air is introduced between the inner layer body 10 and the outer layer body 20 through the opening, the inner layer body is extracted with the contents being poured out. 10 can be reduced.

  When the outer layer body 20 is displaced to the original standing posture after the pouring, the spherical body 50 is displaced to the position indicated by the solid line in FIG. 1 due to its own weight. At this time, the contents near the tip opening 62 are also pulled back by the spherical body 50 (back suction), so that dripping from the tip opening 62 can be effectively prevented.

  When the contents in the filling space M decrease, the inner layer body 10 gradually becomes depressurized, so that the inner layer body 10 is difficult to contract and is difficult to pour out. In this case, as shown in FIG. 2, once the lid body 60 is displaced to the open posture, the outside air can be introduced into the inner layer body 10 from the outside air introduction hole 32, thereby reducing the negative pressure of the inner layer body 10. Since it is eliminated, the contents can be further poured out. It should be noted that the outside air is only introduced in a small amount to release the negative pressure, and it is necessary to introduce the outside air into the inner layer body 10 in the second half of the usage period, so that the contents are released into the outside air. Opportunities to touch are minimized.

  In the present embodiment, the outside air introduction hole 32 is provided in the annular portion 31, and the outside wall introduction hole 32 is closed by bringing the seal wall 64 of the lid 60 and the annular portion 31 into airtight contact with each other. For example, the outside air introduction hole 32 may be provided in the top wall 33 of the inner plug 30 and may be closed by the top wall 63 of the lid 60. The position where the outside air introduction hole 32 is provided may be variously changed. Is possible.

  According to the present invention, it is possible to suppress the contact between the contents and the outside air as in the prior art, and furthermore, the contents can be poured out simply by tilting the container without pressing the outer layer body. Moreover, it is possible to provide a double container in which contents can be poured out without waste until the end.

DESCRIPTION OF SYMBOLS 10 Inner layer body 11 Upper opening 20 Outer layer body 30 Inner plug 31 Annular part 32 Outside air introduction hole 40 Cylindrical part 50 Spherical body 60 Lid body 61 Outlet cylinder part 62 End opening 64 Seal wall h Hinge M Filling space R Distribution path

Claims (2)

An inner layer body having an upper opening connected to a content filling space, an outer layer body having an opening for accommodating the inner layer body inside and introducing outside air between the inner layer body, and a distribution channel for the contents inside An inner plug that holds the cylindrical portion that is formed and has a spherical body that serves as a check valve for the flow path in the upper opening, and a dispensing cylinder portion that is connected to the cylindrical portion, A double container comprising a lid for pouring the contents from the tip opening,
The inner plug is provided with an outside air introduction hole leading to the filling space,
The lid is provided with a hinge that is swingably connected to the inner plug so that the outside air introduction hole communicates with the outside world when the lid is open, while the outside air is introduced when the lid is closed. A double container characterized by preventing communication between the hole and the outside world. The inner plug has an annular portion that surrounds the tubular portion and includes the outside air introduction hole,
2. The double container according to claim 1, wherein the lid includes a seal wall that hermetically abuts against the annular portion in a closed posture of the lid and closes the outside air introduction hole.

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