Container closure and container coupled with same

Abstract

The present invention relates to a container closure and container coupled with same. The present invention provides a container closure comprising: an inner cup portion (200) which is coupled to a container inlet (20) of a container (10) in which first material (1) is contained and in which a second material (2) mixed with the first material (1) is contained; and an outer lid (100) which is coupled to the container inlet (20) so as to cover the inner cup portion (200) coupled to the container inlet (20), wherein the inner cup portion (200) comprises: an inner cup side wall portion (210) which is inserted into the container inlet (20); a cup coupling portion (220) which is supported by at least one of the outer lid (100) and the container inlet (20) at the upper end of the inner cup side wall portion (210); and a bottom portion (230) which is integrally or detachably coupled to the lower end of the inner cup side wall portion (210) so as to form a storage space (SS) in which the second material (2) is contained. The outer lid (100) comprises: an outer lid side wall portion (110) which is screw-coupled to the container inlet (20), and a pressing portion (300) which is installed in the outer lid side wall portion (110) to be movable up / down and presses the bottom portion (230) when moving down so as to open the storage space (SS) downward.

Description

[TECHNICAL FIELD]

[0001] The present invention relates to a container closure assembly and container coupled with same.[BACKGROUND ART]

[0002] It is common for a container to have a container inlet that is opened and closed by a closure, and to contain liquid, powder, or granular material inside the container.

[0003] In some cases, depending on beverages, dietary supplements, special medicines, and the like, first material in liquid form and second material in powder or granular form are mixed for drinking or use.

[0004] In particular, there are cases where the first and second materials are stored separately and are required to be mixed at the time of drinking or use. To meet such requirements, a container closure as in Patent Document 1 has been proposed.

[0005] The container closure according to Patent Document 1 is characterized in that it includes a storage cup inserted into the container inlet, a perforation cutter that breaks a lower portion of the storage cup, and an outer lid having a pressing portion.

[0006] However, even though the container closure according to Patent Document 1 is considerably improved, since it is composed of three members, the cost of manufacturing molds to form the three members and the process of assembling the three members must each be performed three times, which complicates manufacturing and increases manufacturing costs.

[0007] (Patent Document 1) KR 10-2018-0042093 A[DETAILED DESCRIPTION OF THE INVENTION] [PROBLEM TO BE SOLVED BY THE INVENTION]

[0008] To solve the above problems, an object of the present invention is to provide a Container closure assembly and container coupled with same which allow first material and second material to be stored separately and mixed at the time of use, and which, by implementing the closure with an inner cup portion and an outer lid, can reduce manufacturing costs and simplify the manufacturing process.[MEANS FOR SOLVING THE PROBLEM]

[0009] To achieve the above object, the present invention provides a container closure assembly comprising: an inner cup portion (200) which is coupled to a container inlet (20) of a container (10) in which first material (1) is contained and in which second material (2) mixed with the first material (1) is contained; and an outer lid (100) which is coupled to the container inlet (20) so as to cover the inner cup portion (200) coupled to the container inlet (20), wherein the inner cup portion (200) comprises: an inner cup side wall portion (210) which is inserted into the container inlet (20); a cup coupling portion (220) which is supported by at least one of the outer lid (100) and the container inlet (20) at the upper end of the inner cup side wall portion (210); and a bottom portion (230) which is integrally or detachably coupled to the lower end of the inner cup side wall portion (210) so as to form a storage space (SS) in which the second material (2) is contained, and wherein the outer lid (100) comprises: an outer lid side wall portion (110) which is screw-coupled to the container inlet (20); and a pressing portion (300) which is installed in the outer lid side wall portion (110) to be movable up / down and presses the bottom portion (230) when moving down so as to open the storage space (SS) downward.

[0010] The pressing portion (300) may comprises: a pressing plate (310) located at the center inside the outer lid side wall portion (110) and having, on a lower surface, a punching portion (320, 330) extending downward to press the bottom portion (230); and an elastic membrane (340) connecting the inside of the outer lid side wall portion (110) and the pressing plate (310) so that the pressing plate (310) is movable up and down.

[0011] The punching portion (320, 330) may include an annular punching portion (320) that is open at a lower side and inserted in a state of being in close contact with an inner circumferential surface of the inner cup side wall portion (210).

[0012] A blade portion (321) for breaking the bottom portion (230) may be formed at a lower end of the annular punching portion (320).

[0013] The punching portion (320, 330) may further include a central pressing portion (330) inside the annular punching portion (320) to press the bottom portion (230) so that the bottom portion (230) is bent.

[0014] The outer lid (100) may be formed with a rim portion (130) that is formed so as to extend inward from an inner circumferential surface of the outer lid side wall portion (110) so that, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) directly or indirectly abuts an upper end of the container inlet (20).

[0015] When the outer lid (100) is coupled to the container inlet (20), the rim portion (130) may directly contact the upper end of the container inlet (20).

[0016] The outer lid (100) may be formed with an internal side wall portion (140) formed so as to extend downward from a lower end of the rim portion (130), at least a part of an outer surface of the internal side wall portion (140) closely contacting an inner circumferential surface of the container inlet (20) and at least a part of an inner surface of the internal side wall portion (140) closely contacting an outer circumferential surface of the inner cup side wall portion (210).

[0017] The cup coupling portion (220) may be fixedly coupled by a concave-convex structure to an inner circumferential surface of the outer lid (100).

[0018] The bottom portion (230) may be integrally formed with the inner cup side wall portion (210), and a separation groove (231) may be formed at a region where the bottom portion (230) is connected to the inner cup side wall portion (210) so that the bottom portion (230) is broken when pressed by the pressing portion (300).

[0019] The bottom portion (230) may include a sealing member (241) adhered to the inner cup side wall portion (210) and broken when pressed by the pressing portion (300).

[0020] The bottom portion (230) may include a cover member (251) coupled to the inner cup side wall portion (210) and separated from the inner cup side wall portion (210) by the pressing portion (300).

[0021] When the outer lid (100) is coupled to the container inlet (20), the rim portion (130) may press, from above, the cup coupling portion (220) of the inner cup portion (200) in a state of the inner cup portion (200) being supported on the upper end of the container inlet (20).

[0022] An auxiliary cup portion (400) that contains third material (3) to be mixed with the first material (1) and the second material (2) may be coupled to the inner cup portion (200), and the auxiliary cup portion (400) may include: an auxiliary cup side wall portion (410) inserted inside the container inlet (20) with the inner cup portion (200) inserted inside the auxiliary cup side wall portion (410), an auxiliary cup wing portion (420) that, at an upper end of the auxiliary cup side wall portion (410), is supported by at least one of the outer lid (100) and the container inlet (20), and an auxiliary cup bottom portion (430) integrally formed with or detachably coupled to a lower end of the auxiliary cup side wall portion (410) to define an auxiliary space (SS2) in which the third material (3) is contained, wherein the auxiliary cup bottom portion (430) is pressed together with the bottom portion (230) by the pressing portion (300) so that the auxiliary space (SS2) is opened.

[0023] The present invention also provides a container containing first material, in which the container closure having the features described above is coupled to the container.[EFFECTS OF THE INVENTION]

[0024] The container closure and container coupled therewith according to the present invention provide the advantage that, by implementing the container closure configured to allow first material and second material to be stored separately and mixed at the time of use with an inner cup portion and an outer lid, manufacturing costs can be reduced and the manufacturing process simplified.

[0025] In particular, in the container closure and container according to the present invention, the perforation cutter and the outer lid of the container closure according to Patent Document 1 are integrated, so the assembly process can be reduced to one step and the cost of mold manufacture can also be reduced.[BRIEF DESCRIPTION OF THE DRAWINGS]

[0026] FIG. 1 is a cross-sectional view showing a container closure assembly and container coupled with same according to a first embodiment of the present invention. FIGS. 2A and 2B are cross-sectional views respectively showing the outer lid and the storage cup among the container closure shown in FIG. 1. FIG. 3 is a cross-sectional view showing an operation of the container closure shown in FIG. 1. FIG. 4 is a bottom view showing a lower surface of the outer lid of the container closure shown in FIGS. 1 to 3. FIG. 5 is a cross-sectional view showing a container closure assembly and container coupled with same according to a second embodiment of the present invention, as a modification of the present invention. FIG. 6 is a cross-sectional view showing an operation of the container closure shown in FIG. 5. FIG. 7 is a cross-sectional view showing a container closure assembly and container coupled with same according to a third embodiment of the present invention, as a modification of the present invention. FIG. 8 is a cross-sectional view showing a container closure assembly and container coupled with same according to a fourth embodiment of the present invention, as a modification of the present invention. FIGS. 9A and 9B are cross-sectional views respectively showing the outer lid and the storage cup among the container closure shown in FIG. 8. FIG. 10 is a cross-sectional view showing an operation of the container closure shown in FIG. 8. FIG. 11 is a bottom view showing a lower surface of the outer lid of the container closure shown in FIGS. 7 to 10. FIG. 12 is a cross-sectional view showing a container closure assembly and container coupled with same according to a fifth embodiment of the present invention, as a modification of the present invention. FIG. 13 is a cross-sectional view showing an operation of the container closure shown in FIG. 12. FIG. 14 is a cross-sectional view showing a container closure assembly and container coupled with same according to a sixth embodiment of the present invention, as a modification of the present invention. [BEST MODE FOR CARRYING OUT THE INVENTION]

[0027] Embodiments of the container closure assembly and the container coupled therewith according to the present invention will be described below with reference to the accompanying drawings.

[0028] First, the present invention is characterized by the container closure assembly. The container, in particular the structure of the container inlet, is substantially unchanged depending on the container closure assembly, but some parts may be modified to correspond to the structure of the container closure assembly described below.

[0029] The container (10) is a container in which the first material (1) is contained, and any configuration having a container inlet (20) may be used.

[0030] Here, the first material (1) is a material to be mixed with the second material (2), and further third material (3) described below. Regardless of the form in which the material exists-such as a liquid or a powder-the material may be contained in the container, as long as it can be mixed with the second material and, further, the third material.

[0031] The second material (2), and further the third material (3), are materials that fall from the container closure and are mixed with the first material (1) contained in the container (10), and any material may be used as long as it can be mixed with the first material.

[0032] Considering use examples of the container closure according to the present invention, it is preferable that the first material (1) be in the form of a liquid, and that the second material (2), and further the third material (3), be in the form of a powder.

[0033] The container closure assembly according to the present invention, includes an inner cup portion (200) which is coupled to the container inlet (20) of the container (10) in which the first material (1) is contained and in which the second material (2) mixed with the first material (1) is contained and an outer lid (100) which is coupled to the container inlet (20) so as to cover the inner cup portion (200) coupled to the container inlet (20).

[0034] The inner cup portion (200) is coupled to the container inlet (20) of the container (10) containing the first material (1) and is configured to contain the second material (2) to be mixed with the first material (1), and may have various configurations.

[0035] For example, considering that the inner cup portion (200) is manufactured by injection molding, it may be made of plastic material, and may include: the inner cup side wall portion (210) inserted inside the container inlet (20), the cup coupling portion (220) that, at an upper end of the inner cup side wall portion (210), is supported by at least one of the outer lid (100) and the container inlet (20), and the bottom portion (230) integrally formed with or detachably coupled to a lower end of the inner cup side wall portion (210) to define the storage space (SS) in which the second material (2) is contained.

[0036] The inner cup side wall portion (210) is inserted inside the container inlet (20), and may be closely contacting the inner circumferential surface of the container inlet (20) or closely contacting an inner circumferential surface of the internal side wall portion (140) of the outer lid (100) described below.

[0037] To enhance sealing with the internal side wall portion (140), an annular protrusion (212) may be formed on an outer circumferential surface of the inner cup side wall portion (210) so as to closely contact an inner circumferential surface of the internal side wall portion (140).

[0038] Meanwhile, the vertical length of the inner cup side wall portion (210) may be appropriately selected in consideration of the amount of the second material contained in the storage space (SS).

[0039] Further, to enhance the sealing of the storage space (SS), one or more annular projections (219, 211) may be formed on an inner circumferential surface of the inner cup side wall portion (210) to closely contact an outer circumferential surface of the annular punching portion (320) described below.

[0040] The annular projections (219, 211) are projections formed on the inner circumferential surface of the inner cup side wall portion (210) to closely contact the outer circumferential surface of the annular punching portion (320) described below for sealing the storage space (SS), and may have an annular shape.

[0041] Meanwhile, the inner cup side wall portion (210) may be formed in a shape in which an outer diameter decreases toward a lower side so that the inner cup side wall portion (210) can be stably inserted into the inner circumferential surface of the container inlet (20) or into the inner circumferential surface of the internal side wall portion (140) of the outer lid (100) described below.

[0042] The cross-section of a lower end portion of the inner cup side wall portion (210) may have a tapered shape in which a radial thickness decreases.

[0043] The cup coupling portion (220) is a portion at an upper end of the inner cup side wall portion (210) that is supported by at least one of the outer lid (100) and the container inlet (20), and may have various configurations depending on the support structure.

[0044] As one example, as shown in FIGS. 1 to 6, the cup coupling portion (220) may be fixedly coupled by a concave-convex structure to an inner circumferential surface of the outer lid (100).

[0045] More specifically, as shown in FIGS. 1 to 6, a support projection (131) may be formed on an inner circumferential surface of the outer lid (100), particularly on the rim portion (130) or the internal side wall portion (140), and an insertion recess (221) into which the support projection (131) is inserted may be formed in the cup coupling portion (220).

[0046] The support projection (131) may be formed in an annular shape or as a plurality of projections along the circumferential direction.

[0047] The insertion recess (221) is a recess into which the support projection (131) is inserted, and may be formed in an annular shape or as a plurality of recesses along the circumferential direction.

[0048] As another example, as shown in FIGS. 8 to 14, the cup coupling portion (220) may be supported on the upper end of the container inlet (20).

[0049] Specifically, the cup coupling portion (220) may extend radially outward from the upper end of the inner cup side wall portion (210) and be supported on the upper end of the container inlet (20).

[0050] Further, so that the inner cup portion (200) can be separated together from the container inlet (20) while remaining coupled to the outer lid (100) when the outer lid (100) is removed from the container inlet (20) by rotation, it is preferable that the cup coupling portion (220) remain coupled to the outer lid (100) by being press-fit relative to the outer lid (100) or by being fixed by a concave-convex structure or the like.

[0051] The bottom portion (230) defines the storage space (SS) by being integrally formed with or detachably coupled to the lower end of the inner cup side wall portion (210), and may have various configurations depending on its coupling structure with the inner cup side wall portion (210).

[0052] For example, the bottom portion (230) may be integrally formed with the inner cup side wall portion (210). In this case, a separation groove (231) may be formed at a region where the bottom portion (230) is connected to the inner cup side wall portion (210) so that the bottom portion (230) is broken when pressed by the pressing portion (300), particularly by the punching portion (320, 330).

[0053] In this case, the punching portion (320, 330), and particularly the annular punching portion (320), has a sharpened end so that, when it descends, it presses the separation groove (231) to break the separation groove (231). As shown in FIG. 3, the bottom portion (230) can thereby be bent to one side.

[0054] When the bottom portion (230) is bent to one side, the storage space (SS) is opened downward and the second material (2) contained in the storage space (SS) falls downward and mixes with the first material (1).

[0055] Here, it is preferable that the bottom portion (230) be maintained in a state connected to the inner cup side wall portion (210), rather than being completely separated from the inner cup side wall portion (210), e.g., being separated only partially by about three-quarters.

[0056] That is, the separation groove (231) is formed at a portion where the bottom portion (230) and the inner cup side wall portion (210) are connected so that it is broken when pressed by the pressing portion (300). Instead of being formed 360° in the circumferential direction, the separation groove (231) is preferably formed only partially, e.g., about three-quarters.

[0057] After the above operation, the user may shake the container (10) with the container closure assembled to mix the first material (1) and the second material (2), and then use the mixture for drinking or other purposes.

[0058] In particular, when the user shakes the container (10) and then rotates the outer lid (100) to remove it from the container inlet (20), due to the above structure, the inner cup portion (200) is separated from the container inlet (20) while remaining coupled to the outer lid (100).

[0059] As another example, as shown in FIGS. 5 and 6, the bottom portion (230) may include a sealing member (241) that is adhered to the inner cup side wall portion (210) and that is broken when pressed by the pressing portion (300).

[0060] The sealing member (241) is a member that seals the storage space (SS) by being adhered to the inner cup side wall portion (210), and any member that can adhere to the inner cup side wall portion (210) may be used.

[0061] For example, the sealing member (241) may include an aluminum layer, an adhesive layer, and the like, and may be adhered to the inner cup side wall portion (210) by induction, conduction, or the like.

[0062] The sealing member (241) may have a variety of adhesive structures, e.g., including an adhesive portion (242) adhered to an outer circumferential surface of the inner cup side wall portion (210).

[0063] As another example, the bottom portion (230) may include a cover member (251) that is coupled to the inner cup side wall portion (210) and that is separated from the inner cup side wall portion (210) by the pressing portion (300), i.e., by the punching portion (320, 330), particularly the annular punching portion (320).

[0064] The cover member (251) is coupled to the inner cup side wall portion (210) so as to be separated from the inner cup side wall portion (210) by the pressing portion (300), and may have a coupling structure as shown in FIG. 7.

[0065] By the above structure, when the pressing portion (300), i.e., the punching portion (320, 330), particularly the annular punching portion (320), descends, the cover member (251) can be separated from the inner cup side wall portion (210).

[0066] Regarding installation of the cover member (251), as shown in FIG. 7, the inner cup portion (200) may be omitted and the cover member (251) may be coupled to a lower end of the internal side wall portion (140).

[0067] The coupling structure between the cover member (251) and the internal side wall portion (140) may be an insertion structure or the like. For example, a projection (149) may be formed on an outer circumferential surface of a lower end of the internal side wall portion (140), and a groove (252) into which the projection (149) is inserted may be formed on an inner circumferential surface of the cover member (251).

[0068] With such a structure, when the pressing portion (300), i.e., the punching portion (320, 330), particularly the annular punching portion (320), descends, the cover member (251) can be separated from the internal side wall portion (140).

[0069] Meanwhile, as shown in FIG. 14, the inner cup portion (200) described above may further have an auxiliary cup portion (400) coupled thereto that contains third material (3) to be mixed with the first material (1) and the second material (2).

[0070] The auxiliary cup portion (400) is coupled to the inner cup portion (200) and contains the third material (3) to be mixed with the first material (1) and the second material (2), and various configurations are possible.

[0071] In particular, the auxiliary cup portion (400) may be configured identically or similarly to the inner cup portion (200) described above.

[0072] For example, as shown in FIG. 14, the auxiliary cup portion (400) may include: the auxiliary cup side wall portion (410) inserted inside the container inlet (20) with the inner cup portion (200) inserted inside, the auxiliary cup wing portion (420) that, at an upper end of the auxiliary cup side wall portion (410), is supported by at least one of the outer lid (100) and the container inlet (20), and the auxiliary cup bottom portion (430) integrally formed with or detachably coupled to a lower end of the auxiliary cup side wall portion (410) to define the auxiliary space (SS2) in which the third material (3) is contained.

[0073] The auxiliary cup side wall portion (410) is inserted inside the container inlet (20) with the inner cup portion (200) inserted inside, and may be configured in the same or a similar manner as the inner cup side wall portion (210) of the inner cup portion (200) described above, and various configurations are possible.

[0074] In particular, the auxiliary cup side wall portion (410) may have a variety of contact structures with the inner cup side wall portion (210) of the inner cup portion (200), such as a projection structure on an inner circumferential surface, for sealing.

[0075] In addition, if the container inlet (20) is provided with an internal side wall portion (140), the auxiliary cup side wall portion (410) may have a variety of contact structures with the inner circumferential surface of the container inlet (20)-or, where provided, with the inner circumferential surface of the internal side wall portion (140)-for sealing, e.g., provided with a projection on its outer circumferential surface.

[0076] The auxiliary cup wing portion (420) is supported at an upper end of the auxiliary cup side wall portion (410) by at least one of the outer lid (100) and the container inlet (20), and may have various configurations depending on the coupling object and the coupling structure.

[0077] For example, as shown in FIG. 4, the auxiliary cup wing portion (420) may be supported on the upper end of the container inlet (20).

[0078] As another example, although not illustrated, the auxiliary cup wing portion (420) may be fixed by a concave-convex structure to an inner circumferential surface of the outer lid (100), particularly to the rim portion (130) or the internal side wall portion (140).

[0079] The auxiliary cup bottom portion (430) defines the auxiliary space (SS2) by being integrally formed with or detachably coupled to the lower end of the auxiliary cup side wall portion (410), and may have the same or similar configuration as the bottom portion (230) described above (e.g., integral structure, sealing member, cover member, etc.). Detailed description thereof is omitted.

[0080] The auxiliary cup bottom portion (430) is pressed together with the bottom portion (230) by the pressing portion (300) so that the auxiliary space (SS2) is opened, whereby the second material (2) and the third material (3) fall and are mixed with the first material (1).

[0081] The outer lid (100) is coupled to the container inlet (20) to cover the inner cup portion (200) coupled to the container inlet (20), and may have various configurations depending on its coupling structure with the container inlet (20) and with the inner cup portion (200).

[0082] For example, the outer lid (100) may be formed integrally by plastic injection molding, and may include the outer lid side wall portion (110) and the pressing portion (300) installed inside the outer lid side wall portion (110) so as to be movable up and down, the pressing portion (300), upon downward movement, pressing the bottom portion (230) to open the storage space (SS) downward.

[0083] The side wall portion (110) is a side wall part of the outer lid (100), and may have various configurations such as being screwed to the container inlet (20).

[0084] A female thread portion (111) is formed on an inner circumferential surface of the side wall portion (110) to be screwed to a male thread portion (21) formed on an outer circumferential surface of the container inlet (20).

[0085] The female thread portion (111) is formed on the inner circumferential surface of the side wall portion (110) so as to be screwed to the male thread portion (21) formed on the outer circumferential surface of the container inlet (20), and may have various structures depending on the screw-coupling structure.

[0086] A skirt portion (120) may be connected to a lower end of the side wall portion (110) by a plurality of bridges, the skirt portion (120) being held by an engagement jaw portion (22) formed on the outer circumferential surface of the container inlet (20).

[0087] The skirt portion (120) is connected to the lower end of the side wall portion (110) by a plurality of bridges and is held by the engagement jaw portion (22) formed on the outer circumferential surface of the container inlet (20), so that when a user turns the outer lid (100) to remove it from the container inlet (20), the bridges are broken, thus serving as means for confirming whether the container has been opened (tamper evidence).

[0088] In this case, the skirt portion (120) may have a protrusion (121) formed on its inner circumferential surface that protrudes inward so as to be held by the engagement jaw portion (22).

[0089] Meanwhile, to prevent the pressing plate (310) described below from being inadvertently pressed, an isolation wall portion (113) may be provided at an upper end of the side wall portion (110) at a height equal to or higher than the height when the pressing plate (310) is in its uppermost position.

[0090] The isolation wall portion (113) is a structure provided at an upper end of the side wall portion (110) to prevent the pressing plate (310) described below from being inadvertently pressed, and may have various configurations as long as it is formed at a height equal to or higher than the height when the pressing plate (310) is in its uppermost position.

[0091] The pressing portion (300) is installed inside the outer lid side wall portion (110) so as to be movable up and down, and, upon downward movement, presses the bottom portion (230) to open the storage space (SS) downward, and may have various configurations depending on the pressing structure.

[0092] For example, the pressing portion (300) may include the pressing plate (310) located at the center inside the outer lid side wall portion (110) and having, on its lower surface, the punching portion (320, 330) extending downward to press the bottom portion (230), and the elastic membrane (340) connecting the inside of the outer lid side wall portion (110) and the pressing plate (310) so that the pressing plate (310) is movable up and down.

[0093] The pressing plate (310) is located at the center inside the outer lid side wall portion (110) and has, on its lower surface, the punching portion (320, 330) extending downward to press the bottom portion (230), and may have various configurations.

[0094] For example, in consideration of the function allowing a user to press to lower the punching portion (320, 330), it is preferable that the pressing plate (310) be formed relatively thicker than the elastic membrane (340) described below.

[0095] The punching portion (340) extends downward from the lower surface of the pressing plate (310) so as to descend by a pressing operation of the pressing plate (310) and press the bottom portion (230), and may have various configurations.

[0096] For example, the punching portion (320, 330) may include the annular punching portion (320) that is open at a lower side and inserted in a state of being in close contact with the inner circumferential surface of the inner cup side wall portion (210).

[0097] The annular punching portion (320) extends downward from the lower surface of the pressing plate (310), is open at a lower side, and is inserted in a state of being in close contact with the inner circumferential surface of the inner cup side wall portion (210), and may have various configurations.

[0098] In particular, the annular punching portion (320) is characterized by forming a closed storage space (SS) by being inserted in a state of being in close contact with the inner circumferential surface of the inner cup side wall portion (210).

[0099] To this end, the annular punching portion (320) may have various structures on its outer circumferential surface that closely contact the inner circumferential surface of the inner cup side wall portion (210).

[0100] For example, the annular punching portion (320) may have one or more protrusion structures (321) on its outer circumferential surface that closely contact the inner circumferential surface of the inner cup side wall portion (210).

[0101] The protrusion structure (321) may be formed with a gentle curved surface to achieve areal contact rather than line contact with the inner circumferential surface of the inner cup side wall portion (210), thereby achieving various structures for close contact.

[0102] The annular punching portion (320) needs to smoothly perform operations such as cutting the separation groove (231) of the bottom portion (230) or breaking the sealing member (241) when it descends.

[0103] Thus, a blade portion (321) for breaking the bottom portion (230) may be formed at a lower end of the annular punching portion (320).

[0104] It is preferable that the annular punching portion (320), when pressing the bottom portion (230), have an oblique shape in side view so that the pressing force is concentrated locally.

[0105] With such a structure, when the annular punching portion (320) descends, as seen in the drawings, breakage or separation begins from the left portion of the bottom portion (230), and the bottom portion (230), once broken on one side, is bent to the other side by further descent of the annular punching portion (320).

[0106] Meanwhile, the annular punching portion (320), when viewed from below, has a tubular structure and may be structurally weak.

[0107] Accordingly, as shown in FIGS. 4 and 11, the punching portion (320, 330) may further include the central pressing portion (330) formed inside the annular punching portion (320) to press the bottom portion (230) so that the bottom portion (230) is bent.

[0108] The central pressing portion (330) is formed inside the annular punching portion (320) to press the bottom portion (230) so that the bottom portion (230) is bent, and may have various configurations.

[0109] For example, the central pressing portion (330) may have various shapes such as a "-" shape or a "+" shape inside the annular punching portion (320).

[0110] In particular, the central pressing portion (330) may be formed in a state of being coupled to an inner circumferential surface of the annular punching portion (320) so as to reinforce the structural rigidity of the annular punching portion (320).

[0111] The elastic membrane (340) integrally connects the inside of the outer lid side wall portion (110) and the pressing plate (310) so that the pressing plate (310) is movable up and down, and may have various configurations.

[0112] In particular, the elastic membrane (340) may have any configuration as long as it can maintain the raised state or lowered state of the pressing plate (310) by its elastic force when the pressing plate (310) moves up and down.

[0113] The elastic membrane (340) may be connected to an inner circumferential surface of the outer lid side wall portion (110) or to the rim portion (130), and its coupling position and height may be determined in accordance with the vertical travel distance of the pressing plate (310).

[0114] It is preferable that the elastic membrane (340) be formed thinner than the pressing plate (310) to perform its function.

[0115] Meanwhile, the outer lid (100) may include the rim portion (130) that, when the outer lid (100) is coupled to the container inlet (20), directly or indirectly abuts the upper end of the container inlet (20), the rim portion (130) being formed so as to extend inward from the inner circumferential surface of the outer lid side wall portion (110).

[0116] The rim portion (130) is formed so as to extend inward from the inner circumferential surface of the outer lid side wall portion (110) so that, when the outer lid (100) is coupled to the container inlet (20), it directly or indirectly abuts the upper end of the container inlet (20), and may have various configurations.

[0117] For example, as shown in FIGS. 1 to 7, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) may directly contact the upper end of the container inlet (20).

[0118] In this case, an internal side wall portion (140) may be formed so as to extend downward from the lower end of the rim portion (130), such that at least a part of its outer surface closely contacts the inner circumferential surface of the container inlet (20) and at least a part of its inner surface closely contacts the outer circumferential surface of the inner cup side wall portion (210).

[0119] The internal side wall portion (140) is formed so as to extend downward from the lower end of the rim portion (130) so that at least a part of its outer surface closely contacts the inner circumferential surface of the container inlet (20) and at least a part of its inner surface closely contacts the outer circumferential surface of the inner cup side wall portion (210), and may have various configurations.

[0120] As another example, as shown in FIGS. 8 to 14, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) may be installed so as to press, from above, the cup coupling portion (220) of the inner cup portion (200) supported on the upper end of the container inlet (20).

[0121] Meanwhile, the pressing portion (300), which opens the storage space (SS) downward by pressing the bottom portion (230) upon descending, may have any structure capable of pressing the bottom portion (230) in a state where the punching portion (320, 330) described above is formed on its lower surface, in addition to the configuration with the pressing plate (310) and the elastic membrane (340).

[0122] For example, the pressing portion (300) may be formed of a thin film of an elliptical shape, and the punching portion (320, 330) may extend downward from a lower surface of the thin film.

[0123] The container coupled with the above-described container closure is used as follows.

[0124] First, a user presses the pressing portion (300) to descend it, thereby pressing the bottom portion (230) and opening the storage space (SS) downward.

[0125] When the storage space (SS) is opened, the second material (2) contained therein falls and is mixed with the first material (1) contained in the container (10).

[0126] After this operation, the user may shake the container (10) with the container closure assembled to mix the first material (1) and the second material (2), and then use the mixture for drinking or other purposes.

[0127] In particular, when the user shakes the container (10) and then rotates the outer lid (100) to remove it from the container inlet (20), due to the above structure, the inner cup portion (200) is separated from the container inlet (20) while remaining coupled to the outer lid (100).

[0128] The preferred embodiments of the present invention have been described above by way of example only, but the scope of the present invention is not limited to such specific embodiments and may be appropriately modified within the scope of the claims.

Claims

1. A container closure assembly comprising: an inner cup portion (200) which is coupled to a container inlet (20) of a container (10) in which first material (1) is contained and in which second material (2) mixed with the first material (1) is contained; and an outer lid (100) which is coupled to the container inlet (20) so as to cover the inner cup portion (200) coupled to the container inlet (20), wherein the inner cup portion (200) comprises: an inner cup side wall portion (210) which is inserted into the container inlet (20); a cup coupling portion (220) which is supported by at least one of the outer lid (100) and the container inlet (20) at the upper end of the inner cup side wall portion (210); and a bottom portion (230) which is integrally or detachably coupled to the lower end of the inner cup side wall portion (210) so as to form a storage space (SS) in which the second material (2) is contained, and wherein the outer lid (100) comprises: an outer lid side wall portion (110) which is screw-coupled to the container inlet (20); and a pressing portion (300) which is installed in the outer lid side wall portion (110) to be movable up / down and presses the bottom portion (230) when moving down so as to open the storage space (SS) downward.

2. The container closure assembly of claim 1, wherein the pressing portion (300) comprises: a pressing plate (310) located at the center inside the outer lid side wall portion (110) and having, on a lower surface, a punching portion (320, 330) extending downward to press the bottom portion (230); and an elastic membrane (340) connecting the inside of the outer lid side wall portion (110) and the pressing plate (310) so that the pressing plate (310) is movable up and down.

3. The container closure assembly of claim 2, wherein the punching portion (320, 330) comprises: an annular punching portion (320) that is open at a lower side and inserted in a state of being in close contact with an inner circumferential surface of the inner cup side wall portion (210).

4. The container closure assembly of claim 3, wherein a blade portion (321) for breaking the bottom portion (230) is formed at a lower end of the annular punching portion (320).

5. The container closure assembly of claim 4, wherein the punching portion (320, 330) further comprises a central pressing portion (330) inside the annular punching portion (320) to press the bottom portion (230) so that the bottom portion (230) is bent.

6. The container closure assembly of any one of claims 1 to 6, wherein the outer lid (100) is formed with a rim portion (130) that is formed so as to extend inward from an inner circumferential surface of the outer lid side wall portion (110) so that, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) directly or indirectly abuts an upper end of the container inlet (20).

7. The container closure assembly of claim 6, wherein, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) directly contacts the upper end of the container inlet (20).

8. The container closure assembly of claim 7, wherein the outer lid (100) may be formed with an internal side wall portion (140) formed so as to extend downward from a lower end of the rim portion (130), at least a part of an outer surface of the internal side wall portion (140) closely contacting an inner circumferential surface of the container inlet (20) and at least a part of an inner surface of the internal side wall portion (140) closely contacting an outer circumferential surface of the inner cup side wall portion (210).

9. The container closure assembly of any one of claims 1 to 8, wherein the cup coupling portion (220) is fixedly coupled by a concave-convex structure to an inner circumferential surface of the outer lid (100).

10. The container closure assembly of any one of claims 1 to 9, wherein the bottom portion (230) is integrally formed with the inner cup side wall portion (210), and a separation groove (231) is formed at a region where the bottom portion (230) is connected to the inner cup side wall portion (210) so that the bottom portion (230) is broken when pressed by the pressing portion (300).

11. The container closure assembly of any one of claims 1 to 9, wherein the bottom portion (230) includes a sealing member (241) adhered to the inner cup side wall portion (210) and broken when pressed by the pressing portion (300).

12. The container closure assembly of any one of claims 1 to 9, wherein the bottom portion (230) includes a cover member (251) coupled to the inner cup side wall portion (210) and separated from the inner cup side wall portion (210) by the pressing portion (300).

13. The container closure assembly of any one of claims 1 to 12, wherein, when the outer lid (100) is coupled to the container inlet (20), the rim portion (130) presses, from above, the cup coupling portion (220) of the inner cup portion (200) in a state of the inner cup portion (200) being supported on the upper end of the container inlet (20).

14. The container closure assembly of any one of claims 1 to 13, wherein an auxiliary cup portion (400) that contains third material (3) to be mixed with the first material (1) and the second material (2) is coupled to the inner cup portion (200), and wherein the auxiliary cup portion (400) includes: an auxiliary cup side wall portion (410) inserted inside the container inlet (20) with the inner cup portion (200) inserted inside, an auxiliary cup wing portion (420) that, at an upper end of the auxiliary cup side wall portion (410), is supported by at least one of the outer lid (100) and the container inlet (20), and an auxiliary cup bottom portion (430) integrally formed with or detachably coupled to a lower end of the auxiliary cup side wall portion (410) to define an auxiliary space (SS2) in which the third material (3) is contained, wherein the auxiliary cup bottom portion (430) is pressed together with the bottom portion (230) by the pressing portion (300) so that the auxiliary space (SS2) is opened.

15. A container containing first material (1), wherein the container closure according to any one of claims 1 to 14 is coupled to the container.

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