JP2017065759A - Double container cap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a double container cap which can easily discharge air entering an inner layer body with a lid body closed.SOLUTION: A double container cap 1 can be attached to a double container main body 2, and includes: a cap main body 10 which has pouring holes 14a, 14b for pouring a content and is attached to a mouth part 2a; and a lid body 30 which can be opened and closed, and covers the pouring holes 14a, 14b. The lid body 30 includes a lid body main body connected to the cap main body 10, a plug body 32 supported so as to displace vertically with respect to the lid body main body, and a one-way valve 32d which can discharge air in an inner layer body 3 to an external. When the lid body 30 is closed, the plug body 32 does not fit to a fitting hole 14a, and is in a discharge position where the air in the inner layer body 3 can be discharged to the external through the one-way valve 32d. When the plug body 32 is fitted to the fitting hole 14a, the plug body 32 moves to a storage position in which the air in the inner layer body 3 cannot be discharged to the external.SELECTED DRAWING: Figure 4

Description

  According to the present invention, for a double container comprising an inner layer body capable of volume reduction and deformation, and an outer layer body having the inner layer body disposed inside, the contents attached to the mouth of the outer layer body and accommodated in the inner layer body are poured out. The present invention relates to a cap for a double container.

  As a container for receiving cosmetics such as lotion, shampoo, rinse, liquid soap, food seasoning, etc., an inner layer body that accommodates such contents and is capable of volume reduction and deformation, and this inner layer body There is known a double container including an outer layer body that forms an outer shell of the container while housing the container inside. This double container includes a delamination container (lamination peeling container) formed by laminating an outer layer body and an inner layer body from the beginning, and a container of a type in which the outer layer body and the inner layer body are individually formed and assembled. The delamination container is composed of an EBM (Extrusion Blow Molding) in which a laminated parison heated and melted is sandwiched between molds and air is blown inside to form a laminated container, and an outer layer and an inner layer. There is one by biaxial stretch blow molding in which a laminated container is formed from a preform (container material) formed in a bottomed cylindrical shape. In such a double container, a cap for a double container provided with a check tube for preventing the entry of outside air into the inner layer body while being provided with a dispensing cylinder for pouring the contents at the mouth of the normal outer layer body. Is installed. Then, by pressing the outer layer body, the inner layer body is pressurized via the air between the outer layer body and the inner layer body, thereby opening the valve body of the check valve and pouring out the contents. In addition, the outer layer body is provided with a through hole that takes in outside air between the inner layer body, and when the outer layer body is restored to its original shape after pouring, the outside air is taken in from the through hole, and the inner layer body is Only the outer layer is restored while the volume is reduced.

  By the way, in the check valve for preventing the outside air from entering the inner layer body in the above-mentioned double container cap, for example, on the radially inner side of a cylindrical annular wall as in Patent Document 1, via three arms. A plate-shaped valve body to be connected is used. In this type of check valve, the air between the outer layer body and the inner layer body is compressed by pressing the outer layer body, and the valve body is pushed up in the direction of the dispensing cylinder due to the pressure increase caused thereby. The communication port that leads to it can be opened and the contents can be poured out. In addition, when the outer layer body is restored to its original shape after the contents are poured out, the air pressure between the outer layer body and the inner layer body is reduced, and the valve body is closed due to the pressure difference and the elastic force of the three arms. Return to position.

JP 2013-151316 A

  However, in the check valve having the above structure, for example, when the inner layer body is filled with contents such as powdery or granular seasonings, the valve body is opened when the valve body in the open state returns to the closed state. The contents enter between the body and the partition wall, and the valve body cannot return to a completely closed state. In such a case, since the air enters the inner layer after the discharge of the contents is finished, the moist air remains in the inner layer when the outside is in a humid environment, and the powder of the contents, etc. There was a problem that it was easy to absorb moisture and solidify.

  An object of the present invention is to solve such problems, and an object of the present invention is to provide a double container capable of easily discharging air that has entered the inner layer with the lid closed. Is to provide a cap.

The present invention is a double container cap that can be attached to a double container body having an inner layer body and an outer layer body in which the inner layer body is disposed,
A cap body having a pouring hole for pouring the contents from the inner layer body capable of volumetric deformation, and attached to the mouth of the double container body;
An openable / closable lid that covers the pouring hole,
The lid body includes a lid body coupled to the cap body, a plug body supported to be displaceable in the vertical direction with respect to the lid body, and a unidirectional direction in which air in the inner layer body can be discharged to the outside. And a valve
When the lid is closed from the open state, the plug does not fit into a fitting hole provided in the cap body, and the air in the inner layer can be discharged to the outside via the one-way valve. In the discharge position,
A cap for a double container, wherein the plug is moved from the discharge position to the storage position where the air in the inner layer cannot be discharged outside by fitting the plug into the fitting hole. It is.

  Moreover, it is preferable that the said fitting hole is the said extraction hole.

  Moreover, it is preferable that the said plug body has the fitting wall which can be fitted in the said fitting hole, and the said one-way valve provided concentrically with this fitting wall around the fitting wall.

  Further, when the lid is closed from the open state, the stopper engages with the lid body by contacting the fitting hole and maintains a position having a gap between the lid and the fitting hole. It is preferred that

  Moreover, it is preferable that the said one-way valve contacts the upper surface of the said cover body.

  The cap for a double container of the present invention can easily discharge air that has entered the inner layer with the lid closed.

(A) is front sectional drawing which shows the state (at the time of distribution | circulation) which attached the cap for double containers which concerns on 1st Embodiment of this invention to the double container, (b) is the bottom part of Fig.1 (a) FIG. It is front sectional drawing of the cap for double containers (storage position) which concerns on 1st Embodiment of this invention. It is front sectional drawing which shows the state which opened the cover body of the cap for double containers which concerns on 1st Embodiment of this invention. In the double container cap which concerns on 1st Embodiment of this invention, it is front sectional drawing which shows the state (discharge position) which closed the cover body after discharging the contents. It is front sectional drawing which expanded the cover body part in FIG. It is front sectional drawing which shows the state (storage position) which attached the cap for double containers which concerns on 2nd Embodiment of this invention to the double container. It is an expanded sectional view of the cap part for double containers in FIG. It is front sectional drawing which shows the state at the time of use of the cap for double containers which concerns on 2nd Embodiment of this invention. In the double container cap which concerns on 2nd Embodiment of this invention, it is front sectional drawing which shows the state (discharge position) which closed the cover body after discharge of the contents. It is front sectional drawing which shows the state (storage position) which attached the cap for double containers which concerns on 3rd Embodiment of this invention to the double container. It is an expanded sectional view of the cap part for double containers in FIG. In the double container cap which concerns on 3rd Embodiment of this invention, it is front sectional drawing which shows the state (discharge position) which closed the cover body after discharging the contents.

  Hereinafter, the present invention will be described more specifically with reference to the drawings.

  Fig.1 (a) shows the state with which the double container cap 1 which is 1st Embodiment of this invention was mounted | worn with the double container main body 2 adapted to this. In the present specification, claims, abstract, and drawings, the side on which a lid 30 to be described later is located is the upper side (upper side in FIG. 1A), and the side on which the bottom 4f is located is lower (FIG. 1). (Lower side in (a)). The double container cap 1 is composed of a cap body 10 and a lid 30. The double container body 2 includes an inner layer body 3 and an outer layer body 4. FIG. 1A shows the state of the double container main body 2 during distribution, and a sealing material 2d is attached to the upper end 2b of the mouth so that the contents do not enter the cap main body 10 during distribution. It has been. And a user removes the cap main body 10 from the double container main body 2 before use, peels off the sealing material 2d, fixes the cap main body 10 to the double container main body 2 again, and starts use.

  First, the double container body 2 will be described. In the present embodiment, the double container main body 2 is formed by extruding and blowing a delamination container on a parison formed by laminating the synthetic resin material of the inner layer body 3 and the synthetic resin material of the outer layer body 4. Forming. And the material of the inner layer body 3 which comprises the double container main body 2 uses ethylene-vinyl alcohol copolymer resin (EVOH) or nylon. Further, the material of the outer layer body 4 is made of low density polyethylene (LDPE) or high density polyethylene resin (HDPE). In particular, when LDPE is used, high squeeze properties can be imparted. However, the present invention is not limited to this mode. For example, when forming a delamination container by performing biaxial stretch blow molding, polypropylene (PP) is used as the material of the inner layer body 3, and the material of the outer layer body 4 is used. Polyethylene terephthalate (PET) may be used. Further, as the material of the inner layer body 3 and the outer layer body 4, other resins having low compatibility with each other can be used. Furthermore, the double container main body 2 may be formed by assembling the outer layer body and the inner layer body separately instead of the laminated peeling container.

  As shown in FIG. 1 (a), the inner layer body 3 is formed so as to be capable of volumetric deformation. In the present embodiment, the outer layer body 4 is opposed to the double container body 2 formed in a laminated state. It is obtained by making it peel from. The inner layer body 3 is provided with a storage space S for storing contents inside thereof.

  The outer layer body 4 is formed by connecting a cylindrical mouth portion peripheral wall 4a to a body portion 4e having reversible flexibility and a bottom portion 4f for closing a lower end of the body portion 4e. As shown in FIG. 2, a male screw part 4 b is provided on the outer peripheral surface of the mouth part peripheral wall 4 a to be screw-engaged with a female screw part 12 provided on the outer peripheral wall 11 of the cap body 10 described later. Thus, the double container main body 2 can firmly fix the cap main body 10 by the male screw portion 4b. Further, a neck ring 4g is provided below the male screw portion 4b.

  In FIG. 1A, when the outer layer body 4 is restored to its original shape by its own rigidity after the inner layer body 3 is subjected to volume reduction deformation by pressing the body portion 4e of the outer layer body 4, the outer layer body 4 and the inner layer The space between the body 3 is negative pressure. At this time, air is introduced into the space between the outer layer body 4 and the inner layer body 3 from the slit 4s formed in the pinch-off portion of the bottom portion 4f formed by blow molding, as shown in FIG.

  Next, the cap main body 10 which comprises the double container cap 1 is demonstrated using FIG. The cap body 10 includes an outer peripheral wall 11 that surrounds the mouth peripheral wall 4a, and a female thread portion 12 that is threadedly engaged with the male thread portion 4b of the mouth peripheral wall 4a is formed on the inner peripheral surface of the outer peripheral wall 11. . A top wall 19 is integrally connected to the upper portion of the outer peripheral wall 11. Then, the male threaded portion 4b is thread-engaged with the female threaded portion 12, and the upper end 2b of the mouth of the double container body 2 is brought into contact with the lower surface of the top wall 19 of the cap body 10, whereby the cap body 10 is moved to the double container body. 2 can be firmly fixed to the mouth portion 2a. A pouring cylinder 14c is disposed at the center of the top wall 19, and pouring holes 14a and 14b for pouring contents are provided on the upper end surface 14e of the pouring cylinder 14c. Further, an engagement protrusion 19 d is provided on the outer peripheral end of the top wall 19, and the lid protrusion 37 provided on the inner peripheral surface of the lid peripheral wall 33 of the lid 30 when the lid 30 is closed is undercut. The lid 30 is fixed to the cap body 10 together. Further, a top wall step portion 19 e extending in the vertical direction from the outer peripheral end of the top wall 19 toward the upper end of the outer peripheral wall 11 is formed. A hinge 38a is provided at the upper end of the outer peripheral wall 11 in the outer peripheral direction, and a lid 30 described later is coupled to the cap body 10 so as to be opened and closed.

  In the present embodiment, the extraction hole 14a is provided at the center of the upper end surface 14e formed at the upper end of the extraction cylinder 14c, and a plurality of extraction holes 14b having a slightly smaller diameter than the extraction hole 14a are extracted. It is provided at equal intervals around the hole 14a. In addition, the magnitude relationship and arrangement | sequence of the diameter of the extraction holes 14a and 14b are not limited to the said aspect, For example, it can select suitably according to the magnitude | size etc. of a powdery or granular content. Moreover, the extraction hole 14b is not necessarily essential to the present embodiment, and only the extraction hole 14a may be provided at one location.

  As shown in FIG. 2, the lid 30 is connected to the upper end of the outer peripheral wall 11 of the cap body 10 via a hinge 38a, and can cover the outlet holes 14a and 14b by bending the hinge 38a. . A lid step 30a is provided on the peripheral wall of the lid 30 (lid peripheral wall 33), and the top wall step 19e contacts when the lid 30 is closed. At this time, the lid protrusion 37 engages with the engagement protrusion 19d undercut, and the lid 30 is fixed to the cap body 10. A plug body 32 having a valve body 32d that constitutes a one-way valve capable of discharging the air in the inner layer body 3 to the outside is fitted into a central cylinder 36 provided at the center of the upper wall 31 of the lid body 30. ing. The plug body 32 has a sliding cylinder 32b extending in the vertical direction at the center, and is configured to be movable up and down when the sliding cylinder 32b slides on the inner peripheral surface of the central cylinder 36.

  The plug body 32 further includes an outer peripheral wall 32c having a cylindrical side surface outside the sliding cylinder 32b, and the valve body 32d extends obliquely upward from the lower end of the outer peripheral wall 32c toward the outer side. . A valve storage cylinder 35 is provided outside the central cylinder 36 in the upper wall 31, and the tip of the valve body 32 d contacts the inner peripheral surface of the valve storage cylinder 35. The lower ends of the central cylinder 36 and the valve storage cylinder 35 are connected by a valve bottom wall 39, and the bottom surface of the valve bottom wall 39 is connected to the top of the dispensing cylinder 14c when the lid 30 is closed. A plurality of ventilation protrusions 39a that are in contact with the end face 14e are provided on the circumference. The space between the valve portion bottom wall 39 formed by the ventilation protrusion 39a and the upper end surface 14e of the extraction cylinder 14c forms a flow path of air from the extraction hole 14b to the valve body 32d as will be described later. Form.

  On the lower surface of the upper wall 31 of the lid 30, an engagement cylinder 34 having a cylindrical side surface shape hanging in the vertical direction is provided. When the lid 30 is closed, the engagement protrusion 34a provided on the inner peripheral surface near the lower end of the engagement cylinder 34 is under the engagement protrusion 14d provided on the outer peripheral surface near the upper end of the dispensing cylinder 14c. The lid 30 is fixed to the cap body 10 by the cut engagement.

  In the present embodiment, a plug cover 40 for holding the plug 32 so as not to come out of the cover 30 is provided on the upper portion of the upper wall 31 of the cover 30. The plug opening 43 provided in the center of the plug cover 40 has a diameter slightly larger than the diameter of the outer peripheral wall 32c of the plug 32, and does not contact the outer peripheral wall 32c of the plug 32. The valve body 32d is covered from above. Thereby, the plug body 32 can be held so as not to come out of the lid body 30 while being movable in the vertical direction.

  The plug cover 40 is connected to the upper end of the cover peripheral wall 33 through a hinge 38b, and the plug cover protrusion 40b and the central wall protrusion 41a are respectively connected to the engagement protrusion 31d and the storage cylinder protrusion. By engaging the undercut engagement with 35 a, the plug cover 40 is firmly fixed to the upper wall step portion 31 e of the outer peripheral portion of the upper wall 31. In addition, since fixation to the upper wall 31 of this plug body cover 40 is not assumed to remove except at the time of washing | cleaning, the intensity | strength of undercut engagement is raised so that a user may not open accidentally. It is desirable.

  In the present embodiment, the lid body 30 is integrally formed with the cap body 10 via the hinge 38a, but is not limited to this aspect. For example, the lid 30 may be configured as a separate body from the cap body 10 and may be configured to be connected by a further connecting means. Further, the lid body 30 may be configured to be attached to the cap body 10 with screws or undercuts, and all of these aspects indicate a state in which the lid body 30 is connected to the cap body 10.

  FIG. 2 shows a state in the storage position where the air in the inner layer body 3 is not discharged from the extraction holes 14a and 14b. Specifically, the sliding cylinder 32b of the plug 32 fits into the inner peripheral surface of the central cylinder 36 and the extraction hole 14a without any gap, and the engaging protrusion 32f provided near the lower end of the sliding cylinder 32b. 2 is fixed by being under-engaged with the pouring hole 14a, the plug body 32 can maintain the position shown in FIG. 2, and the air in the inner layer body 3 can pass through the side surface of the sliding cylinder 32b upward. Absent. Thereby, the air in the inner layer body 3 does not leak to the outside, and a sealed state suitable for storage can be maintained.

  FIG. 3 shows a state in which the folded hinge 38a is returned, the lid body 30 is opened, and the plug body 32 fitted in the extraction hole 14a is removed. In discharging the contents from the double container cap 1 configured as described above, the posture of the double container body 2 is changed from the standing posture of FIG. The powdery or granular content falls by its own weight and is discharged from the extraction holes 14a and 14b. At this time, the body part 4e of the outer layer body 4 is pressed, and the inner layer body 3 is reduced in volume via the air between the outer layer body 4 and the inner layer body 3, whereby the inside of the inner layer body 3 becomes positive pressure, and the contents Can be discharged from the extraction holes 14a and 14b with more force. When the inner layer body 3 is reduced in volume by pressing the body portion 4e, the outer layer body 4 is restored to its original shape by its own rigidity, and therefore, a negative force is generated between the outer layer body 4 and the inner layer body 3. Pressure is generated. Due to this negative pressure, external air is introduced into the space between the outer layer body 4 and the inner layer body 3 through the slit 4s in the pinch-off portion of the bottom 4f.

  By the way, when the contents are discharged from the extraction holes 14a and 14b, air is introduced into the inner layer body 3 from the extraction holes 14a and 14b in place of the discharged contents. At this time, when the outside is a humid environment, moist air enters the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container body 2 from the tilted posture to the standing posture of FIG. Then, by closing the lid 30, the lower end of the sliding cylinder 32 b of the plug body 32 is lifted in contact with the inner peripheral surface of the extraction hole 14 a, and the plug body 32 moves to the position indicated by the solid line in FIG. 4. To do. In FIG. 4, the position of the plug 32 at the storage position is indicated by a two-dot chain line.

  Next, the user presses the trunk portion 4e of the outer layer body 4 to deform and deform the inner layer body 3. As a result, the inside of the inner layer body 3 has a positive pressure, and the air in the inner layer body 3 passes through the venting protrusion 39a after passing upward from the pouring hole 14b, as indicated by a broken line arrow in FIG. The gap between the outer peripheral surface of the sliding cylinder 32b and the inner peripheral surface of the central cylinder 36 is directed upward. In the middle of the gap, ventilation ribs 32e and 36a are alternately provided in the circumferential direction in both the sliding cylinder 32b and the central cylinder 36, and the air from the inner layer body 3 flows through the ventilation ribs 32e and 36a. Go up through the gap. Note that it is not always necessary to provide both of the ventilation ribs 32e and 36a, and only one of them may be provided. The air that has passed through the ventilation ribs 32e and 36a further passes through the outer peripheral side of the central cylinder 36 and reaches the valve body 32d. Since the valve body 32d constituting the one-way valve is displaced upward by the positive pressure inside the inner layer body 3, a gap is formed between the valve body 32d and the inner peripheral surface of the valve storage cylinder 35, and the air is the valve body 32d. Is discharged from the plug opening 43 to the outside. In FIG. 5, the position of the plug 32 at the storage position is indicated by a two-dot chain line.

  When the pressing of the body portion 4e is stopped, the valve body 32d comes into contact with the inner peripheral surface of the valve storage cylinder 35 again. In this way, the plug body 32 functions as a one-way valve, and prevents air from flowing into the inner layer body 3 from the outside while discharging the air in the inner layer body 3. Thereby, since the air in the inner layer body 3 is appropriately discharged to the outside, the powder of the contents does not absorb moisture and solidify. At this time, the body portion 4e pressed by the rigidity of the outer layer body 4 returns to its original shape. Air is taken into the space between.

  When the user finishes discharging the air in the inner layer body 3, the user presses the top wall 32a of the plug body 32 downward. As a result, the plug body 32 returns to the position shown in FIG. 2, and thus the inner layer body 3 can be maintained in a sealed state suitable for storage.

  As described above, according to the present embodiment, the plug body 32 is configured to be slidable in the vertical direction with respect to the central cylinder 36 of the lid body 30, and the plug body is closed when the lid body 30 is closed from the opened state. The body 32 abuts without being fitted into the dispensing hole 14a, and the air in the inner layer body 3 can be discharged to the outside via the one-way valve by the positive pressure by the pressing of the outer layer body 4, while the plug body 32 is By pressing and fitting into the extraction hole 14a, the air in the inner layer body 3 cannot be discharged to the outside. Thus, when the lid 30 is closed, the air in the inner layer body 3 can be easily discharged, while the inflow of air from the outside can be prevented. Therefore, the powder of the contents does not absorb moisture and solidify. Further, by pressing the plug body 32, the air discharge function can be stopped and a sealed state suitable for storage can be obtained.

  Moreover, according to this embodiment, the air inside the inner layer body 3 can be discharged | emitted, and the volume of the inner layer body 3 can be kept small according to the residual amount of the contents. Thereby, for example, when the content is a tablet, the tablet does not move greatly inside the inner layer body 3, so that the tablet can be prevented from being chipped or broken.

  Moreover, according to this embodiment, since it comprised so that the plug body 32 and the valve body 32d of a one-way valve could be provided integrally, the said advantage can be enjoyed, reducing a number of parts.

  In the present embodiment, the sliding cylinder 32b of the plug body 32 is configured to be fitted into the extraction hole 14a. However, the present invention is not limited to this mode. You may comprise so that the plug body 32 can be fitted in the other fitting hole provided in the cap main body 10. FIG.

  FIG. 6 shows a state in which the double container cap 5 according to the second embodiment of the present invention is attached to the double container main body 2 adapted thereto.

  The outer layer body 4 is formed by connecting a cylindrical mouth portion peripheral wall 4a to a body portion 4e having reversible flexibility and a bottom portion 4f for closing a lower end of the body portion 4e. A male screw portion 4b is provided on the outer peripheral surface of the mouth peripheral wall 4a. Further, the mouth peripheral wall 4a is provided with a through hole 4c for taking in air between the inner layer body 3 and the outer peripheral surface provided with the through hole 4c is provided with a male screw part 4b in the vertical direction. A notched groove 4d is provided. Moreover, the double container main body 2 can fix the cap main body 50 firmly with the external thread part 4b.

  In FIG. 6, when the outer layer body 4 is restored to its original shape by its own rigidity after the inner layer body 3 is deformed by volume reduction by pressing the body portion 4 e of the outer layer body 4, the outer layer body 4, the inner layer body 3, The space between is negative pressure. At this time, air is introduced into the space between the outer layer body 4 and the inner layer body 3 from the through-hole 4c provided in the mouth peripheral wall 4a.

  Next, the cap main body 50 which comprises the double container cap 5 is demonstrated using FIG. Here, the cap body 50 will be described focusing on differences in configuration from the cap body 10 of the first embodiment. The cap main body 50 is provided with a pouring cylinder 54 at the center of the top wall 59, and constitutes a pouring hole 54a for discharging the contents inside the inner layer body 3 to the outside. In addition, an inner peripheral projection 54 b for undercut engagement of a plug body 62 described later is provided on the inner peripheral surface of the dispensing cylinder 54. In addition, an outside air introduction hole 58 for introducing outside air into the inner layer body 3 is provided in the top wall step portion 59 e at the outer peripheral end of the top wall 59. Further, a ventilation gap G1 is provided between the upper end 2b of the mouth portion and the outer peripheral wall 51, and the air introduced from the outside air introduction hole 58 passes through the ventilation hole G1 and the groove portion 4d from the through hole 4c. Guided to the space between the body 4 and the inner layer body 3. In addition, since the air which passed the ventilation gap G1 is guide | induced to the through-hole 4c also through the clearance gap between the external thread part 4b and the internal thread part 52, the groove part 4d is not necessarily an essential structure. An annular protrusion 59f is provided on the lower surface of the top wall 59. When the cap main body 50 is screw-engaged with the double container main body 2, it abuts on the upper end 2b of the mouth portion and the air tightness of the double container main body 2 Ensure sex.

  Next, the lid 60 will be described with reference to FIG. The lid 60 will also be described focusing on differences in configuration from the lid 30 of the first embodiment.

  As shown in FIG. 7, the lid 60 of the present embodiment is provided with an upper wall step portion 61 a at the center of the upper wall 61, and a bottom wall 65 extending from the lower end of the upper wall step portion 61 a has a plug opening 65 b. Is provided. A plug body 62 is inserted into the plug body opening 65b, and the outer peripheral surface of the sliding cylinder 62a of the plug body 62 is configured to be slidable in the vertical direction in FIG. 7 within the plug body opening 65b. An engaging protrusion 62d is provided in the vicinity of the lower end of the sliding cylinder 62a. At the storage position of the double container cap 5, the engaging protrusion 62d is formed on the inner peripheral protrusion 54b of the dispensing cylinder 54 as shown in FIG. Engage undercut.

  A one-way valve 67 for discharging the air in the inner layer body 3 to the outside is attached to the outer peripheral surface of the engagement cylinder 64 that hangs downward from the upper wall step portion 61a. Further, a plurality of ventilation grooves 64 a for guiding the air discharged from the outlet hole 54 a to the one-way valve 67 are provided on the inner peripheral surface of the engagement cylinder 64 in the circumferential direction. The one-way valve 67 includes a valve portion peripheral wall 67b attached to the outer peripheral surface of the engagement cylinder 64, and a valve body 67a extending from the lower end of the valve portion peripheral wall 67b in the outer peripheral direction and downward. In the storage position shown in FIG. 7, the tip of the valve body 67 a comes into contact with the upper surface of the top wall 59. A lid step 60a is provided in the vicinity of the lower end of the inner peripheral surface of the lid peripheral wall 63, and the air that has passed through the one-way valve 67 is provided on the inner peripheral surfaces of the lid peripheral wall 63 and the lid step 60a. Is provided with a lid air groove 66 for discharging the air to the outside.

  In the state of the storage position shown in FIG. 7, the sliding cylinder 62 a of the plug body 62 is fitted into the inner peripheral surface of the extraction hole 54 a without a gap, and the extraction hole 54 a is completely closed by the plug body 62. ing.

  In FIG. 8, in order to discharge the contents from the double container cap 5 configured as described above, the folded hinge 68 is returned and the lid 60 is opened to fit into the extraction hole 54a. The stopper body 62 is removed, and the double container main body 2 is rotated from the standing posture in FIG. 7 counterclockwise in the drawing to change the posture to the tilted posture. As a result, the powdery or granular content falls by its own weight and is discharged from the extraction hole 54a. At this time, the body part 4e of the outer layer body 4 is pressed, and the inner layer body 3 is reduced in volume via the air between the outer layer body 4 and the inner layer body 3, whereby the inside of the inner layer body 3 becomes positive pressure, and the contents Can be discharged from the pouring hole 54a more vigorously. When the inner layer body 3 is reduced in volume by pressing the body portion 4e, the outer layer body 4 is restored to its original shape by its own rigidity, and therefore, a negative force is generated between the outer layer body 4 and the inner layer body 3. Pressure is generated. Due to this negative pressure, external air is introduced into the space between the outer layer body 4 and the inner layer body 3 from the through hole 4c.

  By the way, when the contents are discharged from the discharge hole 54a, air is introduced into the inner layer body 3 from the discharge hole 54a in place of the discharged contents. At this time, when the outside is a humid environment, moist air enters the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container body 2 from the tilted posture to the standing posture of FIG. Then, by closing the lid 60, the lower end of the sliding cylinder 62a of the plug body 62 is lifted in contact with the inner peripheral surface of the extraction hole 54a, and the plug body 62 moves upward. As a result, the engagement protrusion 65a provided on the inner peripheral surface of the plug body opening 65b is engaged with the engagement recess 62e provided on the outer peripheral surface of the slide cylinder 62a, and the lower end of the slide cylinder 62a is injected. The state in contact with the outlet hole 54a is maintained. An inner circumferential groove 54d is provided as an air passage on the inner circumferential surface of the extraction hole 54a.

  Next, the user presses the trunk portion 4e of the outer layer body 4 to deform and deform the inner layer body 3. As a result, the inside of the inner layer body 3 has a positive pressure, and the air in the inner layer body 3 is discharged from the inner circumferential side groove portion 54d as shown by a broken line arrow in FIG. 9, and further through the ventilation groove 64a in one direction. The valve 67 is reached. The front end of the valve body 67a is displaced in the outer circumferential direction by the positive pressure inside the inner layer body 3, so that air passes through the gap between the valve body 67a and the top surface of the top wall 59, and the lid body air groove 66 is further passed through. It is discharged to the outside via.

  When the pressing of the body portion 4e is stopped, the valve body 67a comes into contact with the upper surface of the top wall 59 again. As described above, the air in the inner layer body 3 can be prevented from flowing into the inner layer body 3 from the outside while the air in the inner layer body 3 is discharged by the one-way valve 67. Thereby, since the air in the inner layer body 3 is appropriately discharged to the outside, the powder of the contents does not absorb moisture and solidify.

  When the user finishes discharging the air in the inner layer body 3, the user presses the top wall 62b of the plug body 62 downward. As a result, the plug body 62 returns to the position shown in FIG. 7, and thus the inner layer body 3 can be maintained in a sealed state suitable for storage.

  As described above, according to the present embodiment, when the lid body 60 is closed from the opened state, the plug body 62 comes into contact with the dispensing hole 54a and is displaced upward, whereby the engagement protrusion 65a and The sliding cylinder 62a is engaged so that the lower end of the sliding cylinder 62a is in contact with the dispensing hole 54a. Thereby, the air inside the inner layer body 3 can be discharged from the inner circumferential groove 54d provided on the inner circumferential surface of the extraction hole 54a. Further, by disposing the one-way valve 67 behind the inner circumferential groove 54d, the air in the inner layer body 3 can be discharged to the outside, while the inflow of air from the outside can be prevented. Therefore, the powder of the contents does not absorb moisture and solidify. In addition, by pressing the plug 62, the air discharge function can be stopped and an airtight state suitable for storage can be obtained.

  In the present embodiment, the lid air groove 66 as a ventilation means is provided on the lid 60 side. However, the present invention is not limited to this mode. You may comprise so that a ventilation means may be provided in the cap main body 50 side.

  FIG. 10 shows a state in which the double container cap 7 according to the third embodiment of the present invention is attached to the double container main body 2 adapted thereto.

  The outer layer body 4 is formed by connecting a cylindrical mouth portion peripheral wall 4a to a body portion 4e having reversible flexibility and a bottom portion 4f for closing a lower end of the body portion 4e. As shown in FIG. 10, on the outer peripheral surface of the mouth peripheral wall 4a, a male screw portion 4b is provided for screw engagement with a female screw portion 72 provided on the outer peripheral wall 71 of the cap body 70 described later. Thus, the double container main body 2 can firmly fix the cap main body 70 by the male screw portion 4b. Further, a neck ring 4g is provided below the male screw portion 4b.

  In FIG. 10, when the outer layer body 4 is restored to its original shape by its own rigidity after the inner layer body 3 is reduced in volume by pressing the body portion 4 e of the outer layer body 4, the outer layer body 4, the inner layer body 3, The space between is negative pressure. At this time, air is introduced into the space between the outer layer body 4 and the inner layer body 3 from the slit formed in the pinch-off portion of the bottom portion 4f formed by blow molding.

  Next, the cap main body 70 which comprises the double container cap 7 is demonstrated using FIG. Here, the cap body 70 will be described focusing on differences in configuration from the cap body 10 of the first embodiment. The cap main body 70 has a pouring hole 74 a for discharging the contents inside the inner layer body 3 to the outside by a pouring cylinder 74 provided in the center of the top wall 79.

  Next, the lid 80 will be described with reference to FIG. The lid 80 will also be described focusing on differences in configuration from the lid 30 of the first embodiment.

  As shown in FIG. 11, the lid body 80 of the present embodiment is provided with an upper wall step portion 81a at the center of the upper wall 81, and a bottom wall 85 extending from the lower end of the upper wall step portion 81a has a plug body opening 85b. Is provided. A plug body 82 is inserted into the plug body opening 85b, and the outer peripheral surface of the sliding cylinder 82a of the plug body 82 is configured to be movable in the vertical direction in FIG. 11 within the plug body opening 85b. A fitting projection 82d is provided on the outer peripheral surface of the sliding cylinder 82a, and at the storage position of the double container cap 7, it is elastically deformed in the radial direction as shown in FIG. Fits to the inner peripheral surface of the. It should be noted that the portion of the outer peripheral surface of the sliding cylinder 82a other than the fitting projection 82d is not in contact with the plug body opening 85b and the inner peripheral surface of the extraction cylinder 74, so that the air in the inner layer body 3 can pass through. Has a gap. Further, a stopper step 82e is provided on the upper portion of the sliding cylinder 82a, and abuts against an upper wall step 81a provided on the lid 80 in the storage position.

  A valve body 82 c constituting a one-way valve is provided around the top wall 82 b of the plug body 82. The valve body 82 c is formed concentrically with the dispensing cylinder 74 and the sliding cylinder 82 a and is formed as a part of the plug body 82. Note that the valve body 82c is not necessarily formed concentrically with the dispensing cylinder 74 and the sliding cylinder 82a, and any configuration that allows the valve body 82c to function as a one-way valve may be employed. it can.

  In the state of the storage position shown in FIG. 11, the fitting protrusion 82d provided on the outer peripheral surface of the sliding cylinder 82a is fitted to the inner peripheral surface of the dispensing hole 74a, and the stopper step 82e is In order to come into contact with the wall step portion 81 a, the pouring hole 74 a is completely closed by the plug body 82.

  In discharging the contents from the double container cap 7 configured as described above, the lid body 80 is opened from the state of FIG. By rotating the double container main body 2 from the standing posture counterclockwise in FIG. 11 to change the posture to the tilted posture, the powdery or granular content falls by its own weight and is discharged from the pouring hole 74a. At this time, the body part 4e of the outer layer body 4 is pressed, and the inner layer body 3 is reduced in volume via the air between the outer layer body 4 and the inner layer body 3, whereby the inside of the inner layer body 3 becomes positive pressure, and the contents Can be discharged from the pouring hole 74a more vigorously. When the inner layer body 3 is reduced in volume by pressing the body portion 4e, the outer layer body 4 is restored to its original shape by its own rigidity, and therefore, a negative force is generated between the outer layer body 4 and the inner layer body 3. Pressure is generated. Due to this negative pressure, external air is introduced into the space between the outer layer body 4 and the inner layer body 3 from the slit in the pinch-off portion of the bottom 4f.

  By the way, when the contents are discharged from the discharge hole 74a, air is introduced into the inner layer body 3 from the discharge hole 74a in place of the discharged contents. At this time, when the outside is a humid environment, moist air enters the inner layer body 3.

  When the discharge of the contents is completed, the user returns the double container body 2 from the tilted posture to the standing posture of FIG. Then, by closing the lid 80, the fitting protrusion 82d of the sliding cylinder 82a of the plug 82 comes into contact with the upper end of the extraction hole 74a, and the plug 82 is lifted and moved upward. As a result, the fitting protrusion 82 d enters between the upper end of the dispensing cylinder 74 and the lower surface of the bottom wall 85. Further, since the valve body 82c forming the one-way valve has a shape that hangs down in the outer circumferential direction in advance, even in the state of FIG. 12 in which the plug body 82 is lifted upward, the tip is in contact with the upper wall 81. Yes.

  Next, the user presses the trunk portion 4e of the outer layer body 4 to deform and deform the inner layer body 3. Thereby, the inside of the inner layer body 3 becomes positive pressure, and the fitting protrusion 82d that has been in contact with the upper surface of the dispensing cylinder 74 is slightly lifted upward to form a gap through which the air in the inner layer body 3 can pass. Is done. The air in the inner layer body 3 reaches the valve body 82c of the one-way valve through the gap between the sliding cylinder 82a, the extraction cylinder 74, and the plug body opening 85b, as shown by the broken line arrows in FIG. To do. Since the valve element 82c that has been in contact with the upper surface of the upper wall 81 is slightly lifted upward by the positive pressure in the inner layer body 3, the air is externally passed through the gap between the valve element 82c and the upper wall 81. To be discharged.

  When the pressing of the body portion 4e is stopped, the valve body 82c comes into contact with the upper surface of the upper wall 81 again. As described above, the air in the inner layer body 3 can be prevented from flowing into the inner layer body 3 from the outside while the air in the inner layer body 3 is discharged by the one-way valve. Thereby, since the air in the inner layer body 3 is appropriately discharged to the outside, the powder of the contents does not absorb moisture and solidify.

  When the user finishes discharging the air in the inner layer body 3, the user presses the top wall 82b of the plug body 82 downward. As a result, the plug body 82 returns to the position shown in FIG. 11, and thus the inner layer body 3 can be maintained in a sealed state suitable for storage.

  As described above, according to the present embodiment, the valve body 82c of the one-way valve for discharging the air inside the inner layer body 3 to the outside and preventing the inflow of air from the outside is the upper wall of the lid body 80. 81 is configured to contact the upper surface of 81. Thereby, a one-way valve is formed in a small space, and the air in the inner layer body 3 can be easily discharged, while the inflow of air from the outside can be prevented. Therefore, the powder of the contents does not absorb moisture and solidify. In addition, by pressing the plug 82, the air discharge function can be stopped and an airtight state suitable for storage can be obtained.

  In addition, the place mentioned above only showed embodiment of this invention, and can add a various change in a claim. It should be understood that such a configuration is within the scope of the present invention.

1,5,7 Double container cap 2 Double container body 2a Mouth part 2b Mouth top 2d Sealing material 3 Inner layer body 4 Outer layer body 4a Mouth peripheral wall 4b Male thread part 4c Through hole 4d Groove part 4e Body part 4f Bottom part 4g Neck Ring 4s Slit 10, 50, 70 Cap body 11, 51, 71 Outer peripheral wall 12, 52, 72 Female thread 14a, 14b, 54a, 74a Outlet 14c, 54, 74 Outlet cylinder 14d, 54c, 74c Engagement protrusion Portion 14e Upper end surface 19, 59, 79 Top wall 19d, 59d, 79d Engaging protrusion 19e, 59e, 79e Top wall step 30, 60, 80 Lid 30a, 60a, 80a Lid step 31, 31, 81 Upper wall (cover body)
31d engagement protrusion 31e, 61a, 81a upper wall step 32, 62, 82 plug 32a, 62b, 82b top wall 32b, 62a, 82a sliding cylinder 32c outer peripheral wall 32d, 67a, 82c valve body 32e ventilation rib 32f Engaging protrusion 33, 63, 83 Lid peripheral wall (lid body)
34, 64, 84 Engagement tube 34a Engagement projection 35 Valve storage tube (lid body)
35a Storage cylinder protrusion 36 Center cylinder (lid body)
37, 69, 87 Lid projection 38a, 38b, 68, 88 Hinge 39 Valve bottom wall 39a Venting projection 40 Plug lid 40b Plug lid projection 41a Central wall projection 43 Plug opening 54b Inner peripheral projection Portion 54d Inner peripheral side groove 58 Outside air introduction hole 59f Annular protrusion 62d Engaging protrusion 62e Engaging recess 64a Venting groove 65, 85 Bottom wall 65a Engaging protrusion 65b, 85b Plug body opening 66 Lid air groove 67 One direction Valve 67b Valve part peripheral wall 82d Fitting protrusion 82e Plug body step part G1 Ventilation gap S Storage space

Claims (5)

A double container cap that can be attached to a double container main body having an inner layer body and an outer layer body having the inner layer body arranged on the inside,
A cap body having a pouring hole for pouring the contents from the inner layer body capable of volumetric deformation, and attached to the mouth of the double container body;
An openable / closable lid that covers the pouring hole,
The lid body includes a lid body coupled to the cap body, a plug body supported to be displaceable in the vertical direction with respect to the lid body, and a unidirectional direction in which air in the inner layer body can be discharged to the outside. And a valve
When the lid is closed from the open state, the plug does not fit into a fitting hole provided in the cap body, and the air in the inner layer can be discharged to the outside via the one-way valve. In the discharge position,
A cap for a double container, wherein the plug is moved from the discharge position to the storage position where the air in the inner layer cannot be discharged outside by fitting the plug into the fitting hole. .   The double container cap according to claim 1, wherein the fitting hole is the pouring hole.   The said plug body has the fitting wall which can be fitted to the said fitting hole, and the said one-way valve provided concentrically with this fitting wall around the fitting wall. The cap for double containers as described in 2.   When the lid is closed from the open state, the stopper engages with the lid body by contacting the fitting hole, and is maintained at a position having a gap between the lid and the fitting hole. The cap for double containers as described in any one of Claims 1 thru | or 3.   The said one-way valve is a cap for double containers as described in any one of Claims 1 thru | or 4 contact | abutted on the upper surface of the said cover body.

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