Refill container

Abstract

To provide a refill container which can prevent the accidental leakage of a content fluid upon refilling.SOLUTION: A refill container 1 comprises: a container body 10; a connection cap 20 including a female screw 24 screwing into a mouth part 51 of a main container 50, and fixed to a mouth part 11 of the container body 10; a blocking part 30 formed into a bottomed cylinder and integrally connected to the inside of the connection cap 20 via a weakening part 31; and a movable plug 40 including a substrate wall 41 provided with an air replacement hole 41a and a liquid circulation hole 41b, an air replacement nozzle 42 projecting from the substrate wall 41, having a tip provided at the inside of the blocking part 30 and connected to the air replacement hole 41a, a cylindrical wall 43 projecting from the substrate wall 41 and provided at the inside of the female screw 24, and a pair of partition walls 44 partitioning the inside of the cylindrical wall 43 into an air circulation area A1 and a pair of liquid circulation areas A2, and freely movably mounted at the inside of the connection cap 20 toward the container body 10.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a refill container.

Background Art

[0002] Conventionally, as a refill container for refilling a container with a content liquid (contents) such as lotion, emulsion, liquid detergent, shampoo, or conditioner, there is a container body that stores the content liquid, and a closing portion is provided on the top surface via a weakened portion, and an opening plug cap that is slidably attached to the mouth portion of the container body. The opening plug cap is inserted into the mouth portion of the container in an inverted posture, and in this state, the container body is pushed toward the container side, so that the weakened portion is broken by the mouth portion of the container body and the closing portion is opened, and the content liquid stored in the container body is refilled into the container. A configuration like this is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above conventional refill container, when refilling the content liquid stored in the container body into the container, there is a problem that the opening plug cap may unexpectedly come off from the mouth portion of the container and the content liquid may leak out.

[0005] The present invention has been made in view of such problems, and an object thereof is to provide a refill container capable of preventing unexpected leakage of the content liquid during refilling.

Means for Solving the Problems

[0006] The refill container of the present invention is,...

[0007] The refill container of the present invention is, in the above configuration, a refill container for refilling the present container with a content liquid, and includes a container body for containing the content liquid, a female screw threadedly coupled to the mouth of the present container, and a connection cap fixed to the mouth of the container body. It is formed in a bottomed cylindrical shape that is recessed toward the side of the container body, and is integrally connected to the inside of the connection cap via a weakened portion to close the mouth of the container body. A substrate wall provided with an air replacement hole at the center and liquid circulation holes on both sides sandwiching the air replacement hole, and an air replacement nozzle protruding from the substrate wall toward the side of the container body with its tip disposed inside the closing portion and communicating with the air replacement hole. A cylindrical wall protruding from the substrate wall toward the side opposite to the container body and disposed inside the female screw thread, and a pair of partition walls provided inside the cylindrical wall respectively partitioning the inside of the cylindrical wall into an air circulation region communicating with the air replacement hole and a pair of liquid circulation regions corresponding to and communicating with the respective liquid circulation holes. It is preferable to have a movable plug movably mounted inside the connection cap toward the container body.

[0008] The refill container of the present invention is, in the above configuration, preferably such that the closing portion includes a rib extending from the bottom wall of the closing portion toward the side of the container body.

[0009] The refill container of the present invention is, in the above configuration, preferably such that the movable plug includes a pair of partition walls provided between the corresponding partition wall and the cylindrical wall to partition the corresponding liquid circulation region into two.

[0010] The refill container of the present invention is, in the above configuration, preferably such that the tips of the partition wall facing the side opposite to the container body and the tips of the partition wall facing the side opposite to the container body are in the same plane as the tip of the cylindrical wall facing the side opposite to the container body.

Effects of the Invention

[0011] According to the present invention, it is possible to provide a refill container capable of preventing accidental leakage of the content liquid during refilling.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0013] Hereinafter, the refill container 1 according to an embodiment of the present invention will be exemplified and described in detail with reference to the drawings.

[0014] In this embodiment, the vertical direction means the vertical direction in a state where the refill container 1 is in the upright posture shown in FIG. 1.

[0015] The refill container 1 according to this embodiment is for refilling a content liquid (contents) 2 such as lotion, liquid detergent, shampoo, and rinse into a main container 50 (see FIG. 6).

[0016] As shown in FIG. 1, the refill container 1 has a container body 10, a connection cap 20, a closing part 30, and a movable plug 40.

[0017] The container body 10 is, for example, a synthetic resin bottle having a mouth portion 11 and a body portion 12 integrally connected to the mouth portion 11, and contains therein a content liquid 2 to be refilled into the present container 50. The mouth portion 11 is cylindrical about the axis O of the container body 10, and an external male thread 13 is integrally provided on its outer peripheral surface.

[0018] Note that the shape, material, etc. of the container body 10 can be variously changed as long as it has a mouth portion 11 and can contain the content liquid 2.

[0019] The connecting cap 20 is made of synthetic resin and includes a cylindrical fixing cylinder portion 21 about the axis O and a cylindrical connecting cylinder portion 22 coaxially and integrally connected to the upper end of the fixing cylinder portion 21.

[0020] An internal female thread 23 is integrally provided inside the fixing cylinder portion 21. By screwing the female thread 23 onto the male thread 13 of the mouth portion 11 of the container body 10, the connecting cap 20 is fixed to the mouth portion 11 of the container body 10 at the fixing cylinder portion 21. The connecting cap 20 is prevented from rotating about the axis O of the mouth portion 11 with respect to the container body 10 when fixed to the mouth portion 11, and the connecting cap 20 rotates together with the container body 10 when the container body 10 rotates about the axis O.

[0021] Note that, instead of the above-described screw connection, the connecting cap 20 can also be configured to be fixed to the mouth portion 11 by undercutting and engaging a protrusion provided inside the fixing cylinder portion 21 with a protrusion provided on the outer peripheral surface of the mouth portion 11 by caulking.

[0022] The connecting cylinder portion 22 has a larger diameter than the fixing cylinder portion 21, and an internal female thread 24 is integrally provided on its inner peripheral surface. The female thread 24 has an outer diameter size and pitch corresponding to a male thread 52 (see FIG. 6) integrally provided on the outer peripheral surface of the mouth portion 51 (see FIG. 6) of the present container 50, and can be screwed onto the mouth portion 51 of the present container 50. That is, the connecting cylinder portion 22 can be screwed onto the mouth portion 51 of the present container 50.

[0023] The connecting cylinder part 22 may be configured such that a plurality of longitudinal ribs 25 for anti-slip are integrally provided on its outer peripheral surface at intervals in the circumferential direction. In FIG. 1, for convenience, only one longitudinal rib 25 is labeled with a reference numeral.

[0024]

[0023] The connecting cap 20 integrally includes a flange part 26 that extends radially inward around the axis O from between the fixing cylinder part 21 and the connecting cylinder part 22. The flange part 26 is in contact with the upper end of the mouth part 11. Also, a cylindrical seal part 27 centered on the axis O is integrally provided on the lower surface of the flange part 26. The seal part 27 is in contact with the inner peripheral surface of the mouth part 11 over the entire circumference. Thereby, leakage of the content liquid 2 from between the fixing cylinder part 21 and the mouth part 11 is prevented.

[0025] The closing part 30 is formed in a bottomed cylindrical shape that is recessed toward the container body 10 side, and is integrally connected to the inside of the connecting cap 20 via a weakening part 31 to close the mouth part 11 of the container body 10. More specifically, the closing part 30 has a bottomed cylindrical shape having a cylindrical peripheral wall 32 centered on the axis O and a bottom wall 33 integrally connected to the lower end of the peripheral wall 32. A flange part 34 that extends radially outward around the axis O is integrally provided at the upper end of the peripheral wall 32, and the outer peripheral edge of this flange part 34 is integrally connected to the inner peripheral edge of the flange part 26 of the connecting cap 20 over the entire circumference via the weakening part 31. The weakening part 31 is an annular shape that continuously extends in the circumferential direction around the axis O, and its wall thickness is formed thinner than the wall thickness of the flange part 26 of the connecting cap 20 and the wall thickness of the flange part 34 of the closing part 30 so that it can be easily broken compared to the flange part 26 and the flange part 34. Thereby, when the closing part 30 is pushed toward the container body 10 side and moves toward the container body 10 side with respect to the connecting cap 20, the weakening part 31 breaks between the flange part 26 and the flange part 34.

[0026] In this embodiment, the closing portion 30 is configured to include a rib 35 extending from the lower surface of the bottom wall 33 of the closing portion 30 toward the container body 10 side. By providing the rib 35, the buoyancy inside the content liquid 2 of the closing portion 30 is increased.

[0027] As shown in FIGS. 2 and 3, in this embodiment, the rib 35 has a cross-shaped rib body 35a extending from the bottom wall 33 toward the container body 10 side, and four arc-shaped portions 35b integrally connected to the corresponding radially outer ends of the rib body 35a and extending in the circumferential direction centered on the axis O. By forming the rib 35 in such a shape, while increasing the buoyancy of the closing portion 30 inside the content liquid 2, it is possible to suppress an increase in the remaining amount of the content liquid 2 inside the container body 10 after filling, such as the content liquid 2 accumulating inside the rib 35.

[0028] As shown in FIGS. 1, 4, and 5, the movable plug 40 includes a substrate wall 41, an air replacement nozzle 42, a cylindrical wall 43, and a pair of partition walls 44.

[0029] The substrate wall 41 is in the shape of a disk with a smaller diameter than the connecting cylindrical portion 22, and is provided with an air replacement hole 41a penetrating the substrate wall 41 along the axis O at its center, and liquid circulation holes 41b penetrating the substrate wall 41 on both sides sandwiching the air replacement hole 41a. The air replacement hole 41a is a hole through which air mainly flows from the inside of the main container 50 toward the inside of the container body 10 when filling the content liquid 2 from the container body 10 into the main container 50. The pair of liquid circulation holes 41b are holes through which the content liquid 2 mainly flows from the inside of the container body 10 toward the main container 50 when filling the content liquid 2 from the container body 10 into the main container 50. In this embodiment, the air replacement hole 41a is circular centered on the axis O, and the pair of liquid circulation holes 41b are each in the shape of an arc having a larger flow area than the air replacement hole 41a. Note that the shapes, sizes, etc. of the air replacement hole 41a and the liquid circulation holes 41b are not limited to the above.

[0030] The air replacement nozzle 42 is cylindrical with an inner diameter corresponding to the outer diameter of the air replacement hole 41a, centered on the axis O, and is integrally connected to the lower surface (upper surface in FIG. 4) of the substrate wall 41 and communicates with the air replacement hole 41a. Further, as shown in FIG. 1, the air replacement nozzle 42 protrudes from the substrate wall 41 toward the side of the container body 10, and its tip (lower end) is disposed inside the closing portion 30. In the present embodiment, the tip of the air replacement nozzle 42 abuts against the inner surface of the bottom wall 33 with a space from the inner side of the peripheral wall 32 of the closing portion 30 and is closed by the bottom wall 33.

[0031] When the weakening portion 31 breaks, the closing portion 30 is removed from the connecting cap 20 and the mouth portion 11 of the container body 10 is opened. Therefore, when the weakening portion 31 breaks and the closing portion 30 is removed from the connecting cap 20, the air replacement hole 41a communicates with the inside of the container body 10 through the air replacement nozzle 42, and the pair of liquid flow holes 41b each communicate with the inside of the container body 10.

[0032] As shown in FIGS. 1 and 4, the cylindrical wall 43 is substantially cylindrical with the axis O as the center, and protrudes from the upper surface (lower surface in FIG. 4) of the substrate wall 41 toward the side opposite to the container body 10 or the air replacement nozzle 42. Further, as shown in FIG. 1, the cylindrical wall 43 is disposed inside the female screw 24 provided on the inner peripheral surface of the connecting cylindrical portion 22 of the connecting cap 20.

[0033] In the present embodiment, the cylindrical wall 43 has an annular stepped portion 43a centered on the axis O by having an outer peripheral surface with a larger diameter on the lower side than on the upper side. The stepped portion 43a faces the side opposite to the container body 10, and the diameter of its inner periphery is substantially the same as the inner diameter of the mouth portion 51 of the present container 50. Further, the cylindrical wall 43 is provided with an inner seal portion 43b adjacent to the lower side of the stepped portion 43a. The inner seal portion 43b is a bulging portion extending over the entire circumference of the outer peripheral surface of the cylindrical wall 43, and has an outer diameter that can be fitted liquid-tightly inside the mouth portion 51 of the present container 50.

[0034] A pair of partition walls 44 are respectively provided inside the cylindrical wall 43. As shown in FIGS. 4 and 5, the inside of the cylindrical wall 43 is partitioned into an air circulation region A1 communicating with the air replacement hole 41a and a pair of liquid circulation regions A2 respectively corresponding to and communicating with the liquid circulation holes 41b. In the present embodiment, the pair of partition walls 44 are each flat plate-shaped, arranged parallel to each other, and their lower ends (upper ends in FIG. 4) are integrally connected to the substrate wall 41 on both sides sandwiching the air replacement hole 41a. Further, the tips 44a facing away from the container body 10 of the pair of partition walls 44 (lower ends in FIG. 4) are flush with the tips 43c facing away from the container body 10 of the cylindrical wall 43 respectively.

[0035] As shown in FIGS. 4 and 5, the movable plug 40 can also be configured to include a pair of partition walls 45 provided between the corresponding partition wall 44 and the cylindrical wall 43 to partition the corresponding liquid circulation region A2 into two. As shown in FIG. 5, in the present embodiment, the pair of partition walls 45 are each flat plate-shaped, arranged at the center of the liquid circulation region A2 along the radial direction centered on the axis O on both sides sandwiching the air replacement hole 41a, and bisect the liquid circulation region A2. Further, as shown in FIG. 4, the lower ends (upper ends in FIG. 4) of the pair of partition walls 45 are integrally connected to the substrate wall 41 respectively. Also, the tips 45a facing away from the container body 10 of the pair of partition walls 45 (lower ends in FIG. 4) are flush with the tips 44a of the pair of partition walls 44 and the tips 43c of the cylindrical wall 43 respectively.

[0036] As shown in FIG. 1, the movable plug 40 having the above configuration is movably mounted inside the connection cap 20, more specifically, inside the connection cylindrical portion 22, toward the container body 10.

[0037] As shown in FIGS. 1, 4, and 5, an annular locking piece 46 extending over the entire circumference is integrally provided on the outer peripheral surface of the substrate wall 41. As shown in FIG. 1, the locking piece 46 abuts against the inner peripheral surface of the connecting cylinder portion 22 below the locking projection 28 integrally provided on the inner peripheral surface of the connecting cylinder portion 22. Thereby, the movable plug 40 is prevented from coming off with respect to the connecting cap 20. On the other hand, a space is provided between the locking piece 46 and the flange portion 26, and the movable plug 40 can move from the position shown in FIG. 1 toward the container body 10 until the locking piece 46 abuts against the flange portion 26 while sliding the locking piece 46 on the inner peripheral surface of the connecting cylinder portion 22. When the movable plug 40 moves from the position shown in FIG. 1 toward the container body 10, the closing portion 30 is pushed by the air replacement nozzle 42 and moves from the position shown in FIG. 1 toward the container body 10 together with the movable plug 40, whereby the weakened portion 31 breaks.

[0038] As shown in FIG. 1, the connecting cap 20 may also be configured such that a film 47 for sealing the upper end opening is detachably attached to the upper end opening of the connecting cylinder portion 22. By adopting a configuration in which the film 47 is attached to the upper end opening of the connecting cylinder portion 22, it is possible to prevent foreign matter and the like from entering the inside of the connecting cylinder portion 22 during distribution and the like.

[0039] In addition, by covering the mouth portion 11 of the container body 10 and the connecting cap 20 with a shrink film, it may be configured to prevent foreign matter and the like from entering the inside of the connecting cylinder portion 22 during distribution and the like.

[0040] Next, a procedure for refilling the content liquid 2 accommodated in the refillable container 1 having the above configuration into the present container 50 will be described.

[0041] The present container 50 to be refilled with the content liquid 2 is preferably a synthetic resin bottle having a mouth portion 51 provided with a male screw 52, but as long as it has a mouth portion 51 provided with a male screw 52, it may be a container of other shapes or materials.

[0042] During circulation or the like, as shown in FIG. 1, the closing portion 30 is connected to the connecting cap 20 via the weakening portion 31, so that the mouth portion 11 of the container body 10 is sealed.

[0043] From this state, first, the film 47 attached to the upper end opening of the connecting cap 20 is peeled off. Next, as shown in FIG. 6, with the empty main container 50 in an upright posture with the mouth portion 51 facing upward and the replacement container 1 in an inverted posture with the mouth portion 11 facing downward, the female thread 24 of the connecting cap 20 of the replacement container 1 is screwed onto the male thread 52 of the mouth portion 51 of the main container 50. At this time, since the connecting cap 20 is fixed to the mouth portion 11 of the container body 10, by rotating the container body 10 in the tightening direction around the axis O with respect to the main container 50, the female thread 24 of the connecting cap 20 can be easily screwed onto the male thread 52 of the mouth portion 51 of the main container 50.

[0044] When the connecting cap 20 of the replacement container 1 is screwed onto the mouth portion 51 of the main container 50, the inner seal portion 43b of the cylindrical wall 43 of the movable plug 40 fits liquid-tightly on the inner peripheral surface of the mouth portion 51, and the tip of the mouth portion 51 of the main container 50 abuts against the stepped portion 43a. Then, as the connecting cap 20 of the replacement container 1 is screwed into the mouth portion 51 of the main container 50, as shown in FIG. 7, the movable plug 40 is pushed by the mouth portion 51 of the main container 50 and moves toward the container body 10 side. When the movable plug 40 moves toward the container body 10 side, the closing portion 30 is pushed by the air replacement nozzle 42 and moves toward the container body 10 side, and the weakening portion 31 is pushed through and broken, and the closing portion 30 is removed from the connecting cap 20 and the mouth portion 11 of the container body 10 is opened. At this time, the seal portion 27 fits liquid-tightly on the inner peripheral surface of the mouth portion 11 of the container body 10 over the entire circumference, the inner seal portion 43b fits liquid-tightly on the inner peripheral surface of the mouth portion 51 over the entire circumference, and the locking piece 46 of the movable plug 40 abuts liquid-tightly on the flange portion 26 of the connecting cap 20 over the entire circumference. Therefore, the mouth portion 11 of the container body 10 is liquid-tightly connected to the mouth portion 51 of the main container 50 via the connecting cap 20. Therefore, when replacing the content liquid 2, even if the container body 10 and the main container 50 accidentally fall over, it is possible to prevent the content liquid 2 from leaking from the connecting portion between the container body 10 and the main container 50.

[0045] When the blocking portion 30 is removed from the connecting cap 20 and the mouth portion 11 of the container body 10 is opened, a pair of liquid flow holes 41b provided in the movable plug 40 communicate with the inside of the container body 10. Thereby, the content liquid 2 accommodated in the container body 10 flows into the inside of the present container 50 through the pair of liquid flow holes 41b, and the present container 50 is refilled.

[0046] At this time, since the connecting cap 20 is connected to the mouth portion 51 of the present container 50 by screwing the female screw 24 to the male screw 52, the connecting cap 20 does not accidentally come off from the mouth portion 51 of the present container 50 during the refilling of the content liquid 2. That is, during the refilling of the content liquid 2, it is possible to prevent the connecting cap 20 from coming off from the mouth portion 51 of the present container 50 and the content liquid 2 from accidentally leaking out.

[0047] When the content liquid 2 accommodated in the container body 10 flows into the inside of the present container 50, the air inside the present container 50 is pushed upward by the content liquid 2 and sent to the side of the container body 10 through the air replacement nozzle 42 from the air replacement hole 41a. Thereby, the content liquid 2 inside the container body 10 is replaced with air.

[0048] In the refillable container 1 according to the present embodiment, the blocking portion 30 is a bottomed cylindrical shape that is recessed toward the container body 10, and the tip of the air replacement nozzle 42 is disposed inside the blocking portion 30. Therefore, when the content liquid 2 accommodated in the container body 10 starts to flow into the inside of the present container 50, the tip of the air replacement nozzle 42 is blocked by the blocking portion 30. Further, the weakened portion 31 is located on the side of the liquid flow hole 41b rather than the tip of the air replacement nozzle 42. Thereby, when the content liquid 2 starts to flow from the container body 10 into the inside of the present container 50, it is possible to suppress the content liquid 2 from entering the air replacement hole 41a from the tip of the air replacement nozzle 42. Therefore, when the blocking portion 30 is detached from the connecting cap 20, the air inside the present container 50 can be reliably taken into the inside of the container body 10 from the tip of the air replacement nozzle 42 through the air replacement hole 41a.

[0049] Further, in the refill container 1 according to the present embodiment, since the closing portion 30 is formed in a bottomed cylindrical shape that is recessed toward the container body 10, the air flowing out from the tip of the air replacement nozzle 42 into the container body 10 is taken into the inside of the closing portion 30, and the closing portion 30 can be quickly lifted inside the content liquid 2 of the container body 10 by the buoyancy increased by the air. Therefore, when the closing portion 30 is detached from the connecting cap 20, the air inside the present container 50 can be more surely taken into the container body 10 from the tip of the air replacement nozzle 42 through the air replacement hole 41a without being obstructed by the closing portion 30.

[0050] In particular, in the refill container 1 according to the present embodiment, since the rib 35 extending from the bottom wall 33 toward the container body 10 is provided on the closing portion 30, the buoyancy of the closing portion 30 inside the content liquid 2 is increased by the rib 35, and the closing portion 30 can be lifted more quickly inside the content liquid 2 of the container body 10. Thereby, when the closing portion 30 is detached from the connecting cap 20, the air inside the present container 50 can be more surely taken into the container body 10 from the tip of the air replacement nozzle 42 through the air replacement hole 41a without being obstructed by the closing portion 30.

[0051] Thus, according to the refill container 1 according to the present embodiment, when refilling the content liquid 2, the air inside the present container 50 is surely taken into the container body 10 through the air replacement hole 41a and the air replacement nozzle 42, and the content liquid 2 stored in the container body 10 can be efficiently refilled into the present container 50.

[0052] Further, in the refill container 1 according to the present embodiment, by providing the rib 35 on the closing portion 30, the buoyancy of the closing portion 30 can be increased, so that the necessary buoyancy can be ensured while making the internal space of the closing portion 30 formed in a bottomed cylindrical shape smaller. Therefore, the remaining amount of the content liquid 2 inside the container body 10 that occurs after the completion of refilling due to the content liquid 2 accumulated inside the closing portion 30 remaining inside the container body 10 without being refilled into the present container 50 can be reduced.

[0053] Furthermore, in the refill container 1 according to the present embodiment, since the rib 35 provided on the closing portion 30 has a shape that makes it difficult to hold the content liquid 2, while ensuring the necessary buoyancy by the rib 35, it remains inside the container body 10 without being refilled into the container 50, thereby reducing the remaining amount of the content liquid 2 inside the container body 10 that occurs after the refilling is completed.

[0054] Furthermore, in the refill container 1 according to the present embodiment, by providing a pair of partition walls 44 inside the cylindrical wall 43 of the movable plug 40, the inside of the cylindrical wall 43 is partitioned into an air circulation region A1 communicating with the air replacement hole 41a and a pair of liquid circulation regions A2 communicating with the corresponding liquid circulation holes 41b, respectively. Therefore, it is possible to suppress the content liquid 2 flowing from the liquid circulation hole 41b through the pair of liquid circulation regions A2 toward the inside of the container 50 from flowing toward the air replacement hole 41a, and prevent the air replacement hole 41a from being blocked by the content liquid 2.

[0055] In particular, in the refill container 1 according to the present embodiment, the movable plug 40 is configured to include a pair of partition walls 45 provided between the corresponding partition wall 44 and the cylindrical wall 43 to partition the corresponding liquid circulation region A2 into two. Therefore, as shown in FIG. 8, the content liquid 2 can flow along the partition wall 44 and converge on both sides of the partition wall 45 in each liquid circulation region A2. Thereby, it is possible to suppress the content liquid 2 from adhering to the inner peripheral surface of the mouth portion 51 of the container 50 during refilling, and suppress the content liquid 2 from dripping from the mouth portion 51 when the movable plug 40 is separated from the mouth portion 51 after the refilling is completed.

[0056] Further, in the refill container 1 according to the present embodiment, the tip 44a of the partition wall 44 facing the side opposite to the container body 10 and the tip 45a of the partition wall 45 facing the side opposite to the container body 10 are made to be in the same plane as the tip 43c of the cylindrical wall 43 facing the side opposite to the container body 10. Therefore, as described above, while ensuring the air replacement efficiency by the partition wall 44 and the partition wall 45, it is possible to suppress the content liquid 2 from gathering on a part of the partition wall 44 or the partition wall 45 and causing liquid leakage after the refill is completed.

[0057] Note that, if the tip 45a of the partition wall 45 is configured to protrude to the side opposite to the air replacement nozzle 42 from the tip 43c of the cylindrical wall 43, the content liquid 2 is likely to gather at the tip 45a of the partition wall 45 and cause liquid leakage after the refill is completed. Also, if the tip 44a of the partition wall 44 is configured to protrude to the side opposite to the air replacement nozzle 42 from the tip 43c of the cylindrical wall 43, the two content liquids 2 flowing from the respective liquid circulation regions A2 toward the inside of the container 50 converge into one below the air circulation region A1, thereby reducing the air replacement efficiency. Further, if the tip 45a of the partition wall 45 is configured to retract to the side of the air replacement nozzle 42 from the tip 43c of the cylindrical wall 43, the two content liquids 2 flowing from the respective liquid circulation regions A2 toward the inside of the container 50 cannot be converged along the partition wall 44, and the content liquid 2 adheres to the inner peripheral surface of the mouth portion 51 of the container 50, and when the movable plug 40 leaves the mouth portion 51 after the refill is completed, the content liquid 2 is likely to cause liquid leakage from the mouth portion 51. Furthermore, if the tip 44a of the partition wall 44 is configured to retract to the side of the air replacement nozzle 42 from the tip 43c of the cylindrical wall 43, the two content liquids 2 flowing from the respective liquid circulation regions A2 toward the inside of the container 50 cannot be converged along the partition wall 44, and the content liquid 2 adheres to the inner peripheral surface of the mouth portion 51 of the container 50, and when the movable plug 40 leaves the mouth portion 51 after the refill is completed, the content liquid 2 is likely to cause liquid leakage from the mouth portion 51.

[0058] When all of the content liquid 2 that was contained in the container body 10 has flowed into the main container 50, the replacement of the content liquid 2 is completed. After the replacement is completed, the container body 10 is rotated in the loosening direction about the axis O with respect to the main container 50, and the female screw 24 of the connecting cap 20 is disengaged from the male screw 52 of the mouth portion 51 of the main container 50, whereby the replacement container 1 can be removed from the mouth portion 51 of the main container 50.

[0059] The present invention is not limited to the above-described embodiment, and it goes without saying that various modifications can be made without departing from the gist thereof.

[0060] For example, in the present embodiment, the closing portion 30 is configured to include a rib 35 that extends from the bottom wall 33 toward the container body 10, but it may be configured without the rib 35.

[0061] Further, the shape of the rib 35 of the closing portion 30 may be variously changed as long as it extends from the bottom wall 33 toward the container body 10. For example, the rib body 35a may have a linear shape or a shape having a plurality of columnar portions.

[0062] Furthermore, in the present embodiment, the movable plug 40 is configured to include a pair of partition walls 45, but it may be configured without the pair of partition walls 45.

Explanation of Reference Numerals

[0063] 1 Replacement container 2 Content liquid 10 Container body 11 Mouth portion 12 Barrel portion 13 Male screw 20 Connecting cap 21 Fixing cylinder portion 22 Connecting cylinder portion 23 Female screw 24 Female screw 25 Vertical rib 26 Flange portion 27 Seal portion 28 Locking projection 30 Closing portion 31 Weakening part 32 Peripheral wall 33 Bottom wall 34 Flange part 35 Rib 35a Rib body 35b Arc-shaped part 40 Movable plug 41 Substrate wall 41a Air replacement hole 41b Liquid flow hole 42 Air replacement nozzle 43 Cylindrical wall 43a Step part 43b Inner seal part 43c Tip 44 Partition wall 44a Tip 45 Partition wall 45a Tip 46 Locking piece 47 Film 50 Main container 51 Mouth part 52 Male thread O axis A1 Air flow region A2 Liquid flow region

Claims

1. A replacement container for replacing the content liquid in this container, a container body for containing the content liquid, a connecting cap having a female thread that is screwed to the mouth of the main container and fixed to the mouth of the container body, a bottomed cylindrical shape that is recessed toward the side of the container body, and a closing portion that is integrally connected to the inside of the connecting cap via a weakened portion to close the mouth of the container body, a substrate wall provided with an air replacement hole at the center and liquid flow holes on both sides sandwiching the air replacement hole, an air replacement nozzle that protrudes from the substrate wall toward the container body side and has a tip disposed inside the closing portion and communicates with the air replacement hole, a cylindrical wall that protrudes from the substrate wall toward the side opposite to the container body and is disposed inside the female thread, and a pair of partition walls provided inside the cylindrical wall respectively partitioning the inside of the cylindrical wall into an air flow region communicating with the air replacement hole and a pair of liquid flow regions corresponding to and communicating with the respective liquid flow holes, and a movable plug movably mounted inside the connecting cap toward the container body. The replacement container is characterized by having these components.

2. The replacement container according to claim 1, wherein the closing portion includes a rib extending from the bottom wall of the closing portion toward the container body side.

3. The replacement container according to claim 1 or 2, wherein the movable plug includes a pair of partition walls provided between the corresponding partition wall and the cylindrical wall and partitioning the corresponding liquid flow region into two.

4. The replacement container according to claim 3, wherein the tips of the partition wall facing the side opposite to the container body and the tips of the partition wall facing the side opposite to the container body are in the same plane as the tip of the cylindrical wall facing the side opposite to the container body.

Images