Including a stop cap to prevent the contents from being discharged from the container.

Abstract

According to embodiments of the present invention, a contents discharge container can be provided, the contents discharge container comprising: an inner container in which contents are contained; an outer container in which the inner container is contained; a pump assembly detachably coupled to the upper part of the outer container, a portion of the pump assembly being contained and coupled to the interior of the inner container, and for pressurizing to draw in and discharge the contents contained in the inner container; a piston disposed inside the inner container and for rising and moving by the internal pressure of the inner container, such that the contents contained in the inner container are discharged via the pump assembly; and a blocking cap disposed tightly against the inner wall of the inner container and for preventing the piston from being coupled with the pump assembly and removed from the inner container.

Description

Technical Field

[0001] The present invention relates to a contents discharge container, and more specifically, to a contents discharge container that, when the pump assembly for refilling is separated after the contents discharge is completed, can prevent the piston from being moved to the outside of the contents container by a blocking cap. Background Technology

[0002] Content containers have various structures depending on the dosage form and usage method of the contained contents. Recently, among the various structures of content containers, airless containers, which prevent air from flowing into the container, are being used more frequently.

[0003] An airless container is a structure that uses the internal air pressure of the container body to lift and discharge the contents contained inside the container body. A piston set inside the container body lifts the contents upward and discharges them through a vacuum effect.

[0004] This airless container maintains a vacuum inside the container body, thus preventing the contents from coming into contact with air and preventing spoilage, thereby maintaining the effectiveness of the contents for a longer period of time. Furthermore, since the contents are discharged through the rising of a piston inside the container body, it has the advantage of being able to discharge the contents of the container body without any residue.

[0005] For the airless container as described above, when the contents are exhausted and refilling is required, the pump assembly attached to the container body is separated and combined with a new refill container to perform refilling.

[0006] An airless container is a structure in which a piston inside the container body rises within the container body as the contents are discharged. If all the contents are discharged and the piston rises to its highest point, the piston can be tightly attached to the lower part of the pump assembly. Therefore, for refilling, if the pump assembly is separated from the container body, the piston tightly attached to the lower part of the pump assembly can be moved to the outside of the container body along with the pump assembly.

[0007] Therefore, during the refilling process, if the user cannot control the piston to be firmly attached to the lower part of the pump assembly and move it to the outside of the container body, the contents may not be able to be discharged normally from the new container body after the refilling is completed because the piston is still attached to the lower part of the pump assembly.

[0008] Therefore, there is a need to develop an airless container that, when the contents are exhausted and the pump assembly is separated from the container body, prevents the piston from moving outside the container body by keeping it tightly attached to the lower part of the pump assembly. This would solve the problem of users not being aware that the piston is attached to the lower part of the pump assembly during refilling, and would allow users to easily refill the airless container. Summary of the Invention

[0009] The problem the invention aims to solve The present invention addresses the aforementioned problems. One embodiment of the present invention provides a contents discharge container that prevents contact between the piston and the pump assembly by providing a blocking cap on the inner wall of the inner container, or by separating the piston from the pump assembly when the pump assembly is separated from the inner container and the outer container while the piston is engaged with the pump assembly, thereby preventing the piston from being moved outside the inner container. This solves the problem caused by the user's failure to realize that the piston is engaged with the pump assembly during refilling.

[0010] The technical problems to be solved by the present invention are not limited to those mentioned above. Other technical problems not mentioned can also be clearly understood by those skilled in the art to which the present invention pertains through the following description.

[0011] means for solving problems As a technical means to solve the above-mentioned technical problems, an embodiment of the present invention can provide a contents discharge container, comprising: an inner container in which contents are contained; an outer container in which the inner container is contained; a pump assembly attached to the upper part of the outer container in a detachable manner, a portion of the pump assembly being contained and attached to the interior of the inner container, and pumping and discharging the contents contained in the inner container by pressurization; a piston disposed inside the inner container and moving upward by the internal pressure of the inner container, such that the contents contained in the inner container are discharged via the pump assembly; and a blocking cap disposed in close contact with the inner wall of the inner container, and preventing the piston from being attached to the pump assembly and removed from the inner container.

[0012] Invention Effects According to one embodiment of the present invention, the contents discharge container of the present invention prevents the piston and pump assembly from contacting each other by means of a blocking cap, or, when the pump assembly is separated from the inner container and the outer container while the piston is engaged with the pump assembly, the blocking cap separates the piston from the pump assembly, thereby preventing the piston from being moved outside the inner container while engaged with the pump assembly. Therefore, when the contents are completely exhausted, the pump assembly engaged with the outer container can be effectively and easily separated.

[0013] Furthermore, according to the contents discharge container of the present invention, when all contents are exhausted, after separating the pump assembly attached to the outer container, the contents-depleted inner container is separated from the outer container, and after a new refill container (inner container) is accommodated in the outer container, refilling can be easily performed by fastening the pump assembly to the outer container.

[0014] According to one embodiment of the present invention, the contents discharge container of the present invention can discharge all contents without residue, so there is no residue in the inner container, and the inner container can be separated and replaced without additional cleaning.

[0015] According to one embodiment of the present invention, the contents discharge container, the inner container, the blocking cap, and the piston are all made of a single material, thus allowing for one-piece replacement without separating and discarding the components of the inner container. Therefore, it has the advantages of easy reuse and environmental friendliness.

[0016] The effects that can be obtained by the present invention are not limited to those mentioned above. Other effects not mentioned can be clearly understood by those skilled in the art to which the present invention pertains through the following description. Attached Figure Description

[0017] Figure 1 This is a perspective view showing a contents discharge container according to an embodiment of the present invention.

[0018] Figure 2 This is an exploded perspective view showing the contents of the container after being disassembled according to an embodiment of the present invention.

[0019] Figure 3 This is a cross-sectional view showing the interior of the contents discharge container according to an embodiment of the present invention, and an enlarged view showing the joint portion of the contents and the blocking cap.

[0020] Figure 4 It is a cross-sectional view showing the piston rising inside the inner container according to an embodiment of the invention and closely adhering to the lower part of the pump assembly.

[0021] Figure 5 This is a cross-sectional view showing how, in an embodiment of the invention, the piston separates from the pump assembly via a blocking cap when the pump assembly is separated from the inner container and the outer container.

[0022] Figure 6 This is a cross-sectional view and an enlarged view showing the piston first contacting the blocking cover and blocking contact with the pump assembly according to another embodiment of the present invention.

[0023] Figure 7This is a cross-sectional view showing the refilling process of the contents discharge container according to an embodiment of the present invention.

[0024] Regarding the description of the accompanying drawings, the same or similar reference numerals are used for the same or similar constituent elements. Detailed Implementation

[0025] As a technical means to solve the above-mentioned technical problems, an embodiment of the present invention can provide a contents discharge container, which may include: an inner container in which contents are contained; an outer container in which the inner container is contained; a pump assembly attached to the upper part of the outer container in a detachable manner, a portion of the pump assembly being contained and attached to the interior of the inner container, and for drawing and discharging the contents contained in the inner container by pressurization; a piston disposed inside the inner container and for moving upward by the internal pressure of the inner container, so that the contents contained in the inner container are discharged via the pump assembly; and a blocking cap disposed in close contact with the inner wall of the inner container, and for preventing the piston from being attached to the pump assembly and removed from the inner container.

[0026] Furthermore, when the contents have been discharged and the piston is in contact with the lower part of the pump assembly, the blocking cap can separate the piston from the pump assembly when the pump assembly is separated from the inner container or the outer container, thereby preventing the piston from being moved out of the inner container.

[0027] Furthermore, the lower end of the blocking cap can be formed at a position lower than the lower part of the pump assembly housed in the inner container, such that the piston contacts the blocking cap before contacting the lower part of the pump assembly, thereby blocking the contact between the piston and the pump assembly.

[0028] Furthermore, an enlarged portion that is larger than the lower inner diameter of the inner container can be formed on the inner wall of the inner container, and the blocking cover can be disposed on the enlarged portion of the inner container to close the space between the enlarged portion and the pump assembly.

[0029] Furthermore, a fixing protrusion may be formed on the inner wall of the enlarged portion, and a placement protrusion corresponding to the fixing protrusion is formed on the surface of the blocking cover that is in close contact with the inner wall of the enlarged portion. The blocking cover is tightly fixed to the inner wall of the enlarged portion by combining the placement protrusion with the fixing protrusion.

[0030] Furthermore, the lower part of the blocking cap can be shaped to correspond to the shape of the upper part of the piston, so that the piston can discharge the contents contained inside the inner container without residue as the blocking cap and the piston are tightly attached.

[0031] Furthermore, the blocking cap can be ultrasonically welded or interference-fitted to the inner wall of the inner container to fit snugly against the inner container.

[0032] Furthermore, the pump assembly may include: a housing, which is attached to the inner container such that at least a portion of it is housed within the inner container; a pump unit, which is attached to the housing and is compressed and decompressed by pressurization, thereby moving the contents inside the inner container; a shoulder, which is attached to the outer periphery of the housing and has an opening formed at its upper end; and a button, which is attached to the opening of the shoulder and is used to pressurize the pump unit.

[0033] Furthermore, the upper part of the piston can be shaped to correspond to the shape of the lower part of the housing and the pump section, so that the piston can be attached to the lower part of the housing.

[0034] Furthermore, the piston may have a bent portion, the upper and lower ends of which bend outwards. When the piston is housed inside the inner container, the bent portion deforms inwards through elastic deformation and adheres tightly to the inner wall of the inner container, so as to discharge the contents housed inside the inner container without residue.

[0035] Moreover, the inner container, the blocking cap, and the piston can be made from a single material.

[0036] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. However, this disclosure can be implemented in many different forms and is not limited to the embodiments described herein. Furthermore, for clarity in the accompanying drawings, parts unrelated to the description have been omitted, and similar reference numerals have been used for similar parts throughout the specification.

[0037] The terminology used in this disclosure is described in terms of currently common terminology in consideration of the functions described herein, but these terms may have various other meanings depending on the intent of those skilled in the art, case law, or the emergence of new technologies. Therefore, the terminology used in this disclosure should not be interpreted solely by its name, but rather in conjunction with its meaning and the overall content of this disclosure.

[0038] Furthermore, terms such as "first" and "second" may be used to describe various constituent elements, but these constituent elements should not be limited to these terms alone. These terms are used to distinguish one constituent element from other constituent elements.

[0039] Throughout this specification, when a part is described as being "connected" to another part, this includes not only "direct connection" but also "indirect connection" via other intermediate components. Furthermore, when a part is described as "comprising" a constituent element, unless explicitly stated otherwise, the inclusion of other constituent elements is not excluded; rather, other constituent elements may also be included. Additionally, when describing the constituent elements of embodiments of this disclosure, terms such as first, second, A, B, (a), and (b) may be used. These terms are used only to distinguish the constituent element from other constituent elements and do not limit the nature, order, or sequence of the constituent elements.

[0040] The phrases "in one embodiment" that appear in various places in this disclosure do not necessarily refer to the same embodiment.

[0041] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0042] Figure 1 This is a perspective view showing a contents discharge container according to an embodiment of the present invention. Figure 2 This is an exploded perspective view showing the contents discharge container according to an embodiment of the present invention.

[0043] Reference Figures 1 to 2 According to one embodiment, a contents discharge container 1000 may include: a inner container 100 in which contents are contained; an outer container 200 in which the inner container 100 is contained; a pump assembly 300 detachably coupled to the upper part of the outer container 200, a portion of which is contained and coupled to the interior of the inner container 100, and for drawing in and discharging the contents contained in the inner container 100; a piston 400 disposed inside the inner container 100 and for moving upward by the internal pressure of the inner container 100, thereby discharging the contents contained in the inner container 100 via the pump assembly 300; and a blocking cap disposed in close contact with the inner wall of the inner container 100, and for preventing the piston 400 from being coupled to the pump assembly 300 and removed from the inner container 100.

[0044] For example, the aforementioned contents are fluids in liquid or gel state, and may include cosmetic ingredients, pharmaceutical contents, or quasi-medicinal products such as toothpaste. For example, the contents may include lotions, lotion-type moisturizers, hydrating lotions, nourishing lotions, toners, astringents, massage creams, nourishing creams, moisturizing creams, whitening essences, brightening creams, sunscreens, sunscreens, BB creams, primers, foundations, CC creams, concealers, blushes, contour powders, eyeshadows, eyebrow pencils, eye creams, and makeup bases, but are not limited to these, and may include all types of substances that can be discharged via the pump assembly 300.

[0045] According to one embodiment, the inner container 100 can be formed in the shape of a cylindrical bottle, but is not limited thereto, and various embodiments formed in the shape of a tube, a jar, a dispenser, or a compact can also be applied.

[0046] According to one embodiment, the aforementioned inner container 100 can be formed of a plastic material. For example, it can be formed of polypropylene series or polyethylene series, specifically, it can be formed of materials such as PET, PE, PP, PCR, PETG, etc. However, it is not limited to these; any material can be used as long as it forms the shape of the inner container 100 without causing the contents to deteriorate. Accordingly, the inner container 100 can be reused, thereby providing an environmentally friendly contents discharge container 1000.

[0047] According to one embodiment, a blocking cover 120 may be provided on the inner wall of the inner container 100. For example, the blocking cover 120 may be configured to fit tightly against the inner wall of the inner container 100, thereby preventing the piston 400 from being moved to the outside of the inner container 100 in a state attached to the lower part of the pump assembly 300 when the pump assembly 300 is separated from the inner container 100 and the outer container 200 for refilling.

[0048] Therefore, by separating the pump assembly 300 from the inner container 100 and the outer container 200 while the piston 400 remains in the inner container 100 by means of the blocking cap 120, the following problem can be solved: if the piston 400 is not realized to be attached to the lower part of the pump assembly 300 during the refilling process, the refilled contents discharge container 1000 cannot work properly after the new refill container and pump assembly 300 are attached.

[0049] The method of attaching the blocking cover 120 to the inner wall of the inner container 100 and the method of blocking the piston 400 from moving away by means of the blocking cover 120 are then described in more detail.

[0050] According to one embodiment, the outer container 200 can be configured such that the aforementioned inner container 100 can be accommodated within the outer container 200. For example, the outer container 200 can be configured to have a shape corresponding to the shape of the inner container 100.

[0051] Furthermore, the outer container 200 can be formed with an open top and a hollow interior. Therefore, the inner container 100 can be inserted or separated via the open top of the outer container 200, thereby housing the inner container 100 inside the outer container 200, or the inner container 100, which has discharged all contents, can be separated and replaced with a new refill container.

[0052] The outer container 200 can be formed from the same series of materials as the aforementioned inner container 100, and can be formed from a material with superior rigidity than the inner container 100.

[0053] According to one embodiment, the pump assembly 300 can be coupled to the upper part of the outer container 200. For example, the pump assembly 300 can be threadedly coupled (threaded engagement) by threads formed on the outer periphery of the upper part of the outer container 200.

[0054] According to one embodiment, the pump assembly 300 can discharge contents by pressurization. For example, the pump assembly 300 can be attached to the upper part of the outer container 200, wherein a portion of the pump assembly 300 is housed inside the inner container 100, thereby discharging the contents contained in the inner container 100 to the outside.

[0055] This pump assembly 300 may include: a housing 310, which is attached to the inner container 100 such that at least a portion of it is housed within the inner container 100; a pump 320, attached to the housing 310 and compressed and decompressed by pressurization, thereby moving the contents inside the inner container 100; a shoulder 330, attached to the outer periphery of the housing 310, with an opening formed at the upper end of the shoulder 330, the shoulder 330 connecting and securing the housing 310 and the pump 320 to the outer container 200; and a button 340, attached to the opening of the shoulder 330 and used to pressurize the pump 320.

[0056] The outer casing 310 can be attached to the upper part of the inner container 100 in such a way that a portion of it is accommodated within the upper inner side of the inner container 100.

[0057] According to one embodiment, as the housing 310 is formed as part of the inner container 100, the pump portion 320 coupled to the housing 310 can be located inside the inner container 100.

[0058] Therefore, the pump unit 320 can discharge the contents inside the inner container 100 to the outside of the inner container 100.

[0059] This outer shell 310 can be attached to the inner container 100 by attaching it to the shoulder 330 on the upper part of the outer container 200.

[0060] According to one embodiment, a thread corresponding to the outer peripheral thread formed on the upper part of the outer container 200 can be formed on the shoulder 330, thereby allowing the outer container 200 and the thread to be engaged with each other. In addition to threaded engagement, the shoulder 330 and the outer container 200 can be engaged in a variety of other ways.

[0061] In this way, the shoulder 330 can serve as a connecting member that can connect the outer shell 310 and the pump 320 to the inner container 100.

[0062] According to one embodiment, an open portion may be formed at the upper end of the shoulder 330.

[0063] According to one embodiment, a button portion 340 may be formed in the open portion of the shoulder 330. The button portion 340 may be engaged with the open portion of the shoulder 330 by means of its lower two ends engaging with the open portion of the shoulder 330. Therefore, the button portion 340 may be engaged in a manner that prevents it from detaching from the shoulder 330.

[0064] This button portion 340 is formed to be combined with the upper part of the elastic member of the pump portion 320, which will be described later. When the user presses the button portion 340, the pump portion 320 is driven, thereby enabling the discharge of contents.

[0065] According to one embodiment, a discharge port may be formed in the center of the button portion 340. For example, a vertically penetrating discharge port may be formed in the center of the button portion 340, and the discharge port may be formed in accordance with the discharge path formed by the pump portion 320 as described later, so that the contents discharged by the pump portion 320 may be discharged to the outside.

[0066] According to one embodiment, an outer cover 500 may be attached to the upper part of the outer side of the shoulder 330.

[0067] A connecting protrusion may be formed on a portion of the inner peripheral surface of the outer cover 500, and a connecting protrusion corresponding to and engaging with the connecting protrusion formed on the outer peripheral surface of the shoulder 330 may be formed on a portion of the outer peripheral surface of the shoulder 330, so that the outer cover 500 can be engaged with the shoulder 330.

[0068] In this way, the outer cover 500 can be formed to cover the upper part of the button portion 340, so that the button portion 340 will not be exposed to the outside when the contents discharge container 1000 of the present invention is not used, and thus external force will not be applied to the button portion 340.

[0069] According to one embodiment, a pump portion 320 may be incorporated into the outer casing 310. For example, the pump portion 320 may be disposed at the central portion of the outer casing 310 and incorporated into the outer casing 310, and may be configured such that as the outer casing 310 is housed inside the inner container 100, the lower portion of the pump portion 320 is also housed inside the inner container 100. Therefore, the pump portion 320, being housed inside the inner container 100, also discharges the contents inside the inner container 100.

[0070] According to one embodiment, the pump unit 320 can move its contents by pressurizing and decompressing. For example, the pump unit 320 may include: a cylinder with an open upper and lower portion and a hollow interior; a sealing portion, at least a portion of which is inserted into the cylinder, thereby at least partially closing the upper portion of the cylinder; a sealing cap that is tightly fitted to the cylinder and moves up and down inside the cylinder; a piston rod surrounded by the sealing cap and moving up and down relative to the cylinder; a valve stem that is coupled to the piston rod and moves up and down with it; and an elastic member disposed between the sealing portion and the valve stem, providing an elastic force to the valve stem on the sealing portion. However, this is not a limitation; the pump unit 320 may have any known type of pump structure, such as an airless type, a dip tube type, or a spray type.

[0071] According to one embodiment, the elastic member constituting the pump section 320 can be a bellows-type spring with repeated peaks and valleys and closed sides. In this case, a valve stem wing for supporting the upper end of the elastic member can be formed outward at the upper end of the valve stem, and a downwardly bent portion for supporting the side of the elastic member can be formed at the outer end of the valve stem wing. Furthermore, a support groove can be formed on the upper surface of the sealing portion for the lower end of the elastic member to be inserted into and for supporting the lower end and side of the elastic member respectively. Moreover, at least one of the valve stem wing and the sealing portion can be provided with at least one air passage to eliminate internal pressure changes when the elastic member is compressed and decompressed.

[0072] According to one embodiment, the pump section 320 can be formed entirely of the same or similar material. For example, the pump section 320 can be formed entirely of plastic and may not contain any metal. In particular, the elastic members included in the pump section 320 can also be formed of non-metallic plastic material. In this case, when the inner container 100 is discarded, it is not necessary to discard only the pump section 320, thus improving the reuse rate and the recycling rate of the packaging.

[0073] Figure 3 This is a cross-sectional view showing the interior of the contents discharge container according to an embodiment of the present invention, and an enlarged view showing the joint portion of the contents and the blocking cap.

[0074] Reference Figure 3According to one embodiment, a piston 400 may be provided inside the inner container 100. For example, the piston 400 may be located at the bottom of the inner container 100 containing the contents, with the contents contained above the piston 400. The piston 400 rises due to the vacuum created by the pressurization and depressurization of the pump assembly 300. As the piston 400 rises, the contents located above the piston 400 can be discharged to the outside via the pump assembly 300.

[0075] According to one embodiment, the piston 400 can be formed such that the shape of its upper portion corresponds to the shape of the lower portion of the housing 310 and the pump portion 320. For example, in order for the upper portion of the piston 400 to fit snugly against the lower portion of the housing 310 and the pump portion 320, the piston 400 can be formed to correspond to the shape of the lower portion of the housing 310 and the pump portion 320. Therefore, when the piston 400 rises from the interior of the inner container 100 to its uppermost position, it can fit snugly against the lower portion of the housing 310 and the pump portion 320.

[0076] As described above, with the piston 400 formed to be tightly attached to the lower part of the outer casing 310 and the pump section 320, the piston 400 can rise to the uppermost position inside the inner container 100, thereby discharging the contents contained inside the inner container 100 without residue. This increases the usability of the contents discharge container 1000 according to the present invention. Furthermore, by separating the inner container 100, which discharges all contents, from the outer container 200, the inner container 100 can be discarded without additional cleaning, making it easy to separate and replace.

[0077] Moreover, according to one embodiment, the piston 400 and the inner container 100 can be formed from a single material.

[0078] According to one embodiment, the piston 400 can be formed of a plastic material. For example, it can be formed of polypropylene series, polyethylene series, specifically, it can be formed of materials such as PET, PE, PP, PCR, PETG, etc. However, it is not limited to this, and any material capable of realizing the function of the piston 400 can be used. Accordingly, the piston 400 is reusable, thus providing an environmentally friendly contents discharge container 1000.

[0079] In this way, the inner container 100 and the piston 400 are formed from a single material, so the piston 400 can be separated and replaced together without removing it from the inner container 100, thereby providing an environmentally friendly contents discharge container 1000.

[0080] According to one embodiment, a bend 410 may be formed in the piston 400, wherein the upper and lower ends of the bend 410 are bent outward. For example, the bend 410 is formed such that the upper and lower ends of the piston 400 have a predetermined gradient (inclination) outward.

[0081] According to one embodiment, when the piston 400, which has a bend 410, is engaged with the interior of the inner container 100, it is engaged with the interior of the inner container 100 in a state in which the bend 410 applies a tight-fitting force to the inner container 100. For example, when the piston 400 is initially engaged with the inner container 100, the piston 400 is inserted into the lower part of the inner container 100. At this time, the bend 410 of the piston 400, which is formed in an outwardly bent shape, deforms inward through elastic deformation. At this time, a force generated by the elastic deformation is applied to the bend 410 to restore it to its original shape, thereby the bend 410 is tightly attached to the inner wall of the inner container 100, so that the piston 400 can have a tight-fitting force to the inner container 100.

[0082] Thus, when the piston 400 rises inside the inner container 100 due to the discharge of the contents, the contents will not move to the lower part of the piston 400 inside the inner container 100 due to the tight force, thereby allowing all contents to be discharged without any residual contents inside the inner container 100, thereby increasing the usability of the contents discharge container 1000 of the present invention.

[0083] According to one embodiment, an enlargement 110 may be formed in the inner container 100, which is formed by making the inner diameter of the inner container 100 larger than the inner diameter of the lower part of the inner container 100. This enlargement 110 may be formed at a location on the inner wall of the inner container 100. For example, an enlargement 110 that expands in the inner radial direction may be formed in the upper part of the inner container 100.

[0084] The enlarged portion 110 can be formed at a location in the inner container 100, or its inner diameter can be formed to gradually increase upward from a location in the inner container 100, and the inner wall of the inner container 100 can be formed with a predetermined inclination (gradient). The shape of the enlarged portion 110 can be realized by various forms.

[0085] This enlargement 110 increases the diameter of the portion where the inner container 100 and the pump assembly 300 are joined, thereby making it easier to join and separate the pump assembly 300 from the inner container 100.

[0086] According to one embodiment, a blocking cover 120 may be provided in the enlarged portion 110 of the inner container 100. For example, the blocking cover 120 may be provided in the portion of the inner container 100 where the enlarged portion 110 is formed, thereby closing the space between the enlarged portion 110 and the outer casing 310 of the pump assembly 300.

[0087] According to one embodiment, the blocking cap 120 can be formed as a strip shape that adheres to the inner peripheral surface of the inner wall of the inner container 100. Therefore, the strip-shaped blocking cap 120 can be configured to surround the inner wall of the inner container 100, i.e., the outer peripheral surface of the outer shell 310 of the pump assembly 300, when all the constituent elements of the contents discharge container 1000 of the present invention are engaged. Therefore, the blocking cap 120 does not obstruct the lower part of the pump assembly 300 from being accommodated inside the inner container 100, while also preventing the piston 400 from being moved outside the inner container 100.

[0088] According to one embodiment, a fixing protrusion 111 may be formed on the inner wall of the enlarged portion 110, and a placement protrusion 121 corresponding to the fixing protrusion 111 of the enlarged portion 110 may be formed on the surface of the blocking cover 120 that is in close contact with the inner wall of the enlarged portion 110. The shape, formation position, and number of the fixing protrusion 111 and the placement protrusion 121 can be varied. For example, the fixing protrusion 111 may be formed in a shape with repeated concave and convex shapes, the formation positions of the fixing protrusion 111 and the placement protrusion 121 may be interchanged, and at least one or more fixing protrusions 111 and placement protrusions 121 may be formed.

[0089] In this way, by attaching the placement protrusion 121 of the blocking cover 120 to the fixing protrusion 111 formed on the inner wall of the enlarged portion 110, the blocking cover 120 can be tightly fixed to the inner wall of the enlarged portion 110.

[0090] According to one embodiment, the connection between the inner wall of the enlarged portion 110 and the blocking cover 120 can be achieved by the elasticity of the blocking cover 120. That is, when the blocking cover 120 is inserted into the inner wall of the enlarged portion 110, the elasticity of the blocking cover 120 causes it to undergo a predetermined deformation. If the placement protrusion 121 of the blocking cover 120 is engaged with the fixing protrusion 111 of the enlarged portion 110, the deformed blocking cover 120 returns to its original shape, thereby being tightly fixed to the inner wall of the enlarged portion 110.

[0091] According to one embodiment, the blocking cap 120 may be formed such that the shape of its lower part corresponds to the shape of the upper part of the piston 400. For example, in order to accommodate the aforementioned bent portion 410 of the piston 400, the shape of the lower part of the blocking cap 120 may be formed to correspond to the shape of the upper part of the piston 400.

[0092] Therefore, when the piston 400 rises to its uppermost position inside the inner container 100, as the lower part of the blocking cover 120 and the upper part of the piston 400 come into close contact with each other, the piston 400 can discharge the contents contained inside the inner container 100 without any residue.

[0093] According to one embodiment, the blocking cover 120 can be ultrasonically welded to the inner wall of the inner container 100. For example, the blocking cover 120 and the inner container 100 are seamlessly joined together by ultrasonic welding, thereby improving the adhesion between the blocking cover 120 and the inner container 100. Furthermore, the blocking cover 120 can also be joined to the inner container 100 by an interference fit. When the blocking cover 120 is joined to the inner container 100 by an interference fit, the blocking cover 120 undergoes a predetermined elastic deformation. If the blocking cover 120 is joined to the inner container 100, the deformed blocking cover 120 returns to its original shape, thereby being tightly fixed to the inner wall of the inner container 100.

[0094] According to one embodiment, the blocking cap 120 and the inner container 100 can be formed from a single series of materials. For example, the inner container 100 and the blocking cap 120 can be formed from PP material. In this way, the inner container 100 and the blocking cap 120 can be formed from a single series of materials, thereby allowing them to be separated and replaced together, thus providing an environmentally friendly contents discharge container 1000.

[0095] Figure 4 This is a cross-sectional view showing the piston rising inside the inner container according to an embodiment of the invention and fitting snugly against the lower part of the pump assembly. Figure 5 This is a cross-sectional view showing how, in an embodiment of the invention, the piston separates from the pump assembly via a blocking cap when the pump assembly separates from the inner and outer containers. Figure 6 This is a cross-sectional view and an enlarged view showing the piston first contacting the blocking cover and blocking contact with the pump assembly according to another embodiment of the present invention.

[0096] The following is for reference Figures 4 to 6 This describes an embodiment of a method for preventing the piston from being moved to the outside of the inner container by means of a blocking cover 120.

[0097] According to one embodiment of the method for preventing the piston from being moved to the outside of the inner container, the blocking cover 120 is attached to the inner wall of the inner container 100, and the lower end of the blocking cover 120 may be formed at a position higher than the height of the lower part of the outer shell 310 and the pump portion 320 housed in the inner container 100.

[0098] For example, by forming the lower end of the blocking cover 120 at a position higher than the lower ends of the housing 310 and the pump part 320, when the piston 400 rises due to the depletion of its contents, the piston 400 contacts the lower parts of the housing 310 and the pump part 320, thereby being able to fit tightly against the lower parts of the housing 310 and the pump part 320.

[0099] Subsequently, when the user separates the pump assembly 300 from the inner container 100 and the outer container 200 for refilling, the outer shell 310 and the pump part 320 housed inside the inner container 100 rise and detach from the inner container 100. The piston 400, which is closely attached to the outer shell 310 and the pump part 320, comes into contact with the blocking cover 120, thereby separating from the outer shell 310 and the pump part 320.

[0100] Therefore, by separating the piston 400 from the pump assembly 300 detached from the inner container 100, the blocking cover 120 is able to prevent the piston 400 from being moved outside the inner container 100.

[0101] According to another embodiment of the method for preventing the piston from being moved outside the inner container, the lower end of the blocking cover 120 may be formed at a position lower than the height of the lower part of the outer shell 310 and the pump portion 320 housed in the inner container 100.

[0102] For example, by forming the lower end of the blocking cover 120 at a position lower than the lower ends of the housing 310 and the pump part 320, when the piston 400 rises due to the depletion of its contents, the piston 400 contacts the blocking cover 120 before contacting the housing 310 and the pump part 320, thereby blocking the contact between the piston 400 and the pump assembly 300.

[0103] That is, in this embodiment, as the contact between the pump assembly 300 and the piston 400 is blocked, when the pump assembly 300 is separated from the inner container 100 and the outer container 200, it is possible to prevent the piston 400 from being tightly attached to the lower part of the pump assembly 300 and moved to the outside of the inner container 100.

[0104] Figure 7 This is a cross-sectional view showing the refilling process of the contents discharge container according to an embodiment of the present invention.

[0105] Reference Figure 7 According to one embodiment, a user can expel the contents by pressing the pump section 320 of the pump assembly 300, thereby enabling the user to use the contents.

[0106] If the contents inside the inner container 100 are completely discharged due to user use, the piston 400 will rise to the top of the inner container 100. At this time, the piston 400 can be attached to the lower part of the outer casing 310 and the pump part 320, or it can be attached to the lower part of the blocking cover 120.

[0107] When the user confirms that the contents are completely used up and wishes to refill, the user rotates the shoulder 330 of the pump assembly 300 by a predetermined amount, thereby disengaging the threaded connection with the outer container 200. Afterwards, the pump assembly 300 is separated from the inner container 100 and the outer container 200.

[0108] At this time, according to an embodiment of the present invention, if the piston 400 is in a state of being tightly attached to the lower part of the housing 310 and the pump part 320, then during the process of separating the pump assembly 300 from the inner container 100, the piston 400 comes into contact with the blocking cover 120, thereby releasing and separating the tight attachment between the piston 400 and the housing 310 and the pump part 320.

[0109] Therefore, through the process described above, with the piston 400 remaining inside the inner container 100, the pump assembly 300 can be separated from the inner container 100 and the outer container 200.

[0110] Moreover, according to another embodiment of the invention, the piston 400 is prevented from contacting the outer casing 310 and the pump unit 320 in advance by means of the blocking cover 120, thereby separating the pump assembly 300, whose lower part is not tightly attached to the piston 400, from the inner container 100 and the outer container 200.

[0111] Then, the inner container 100, which is completely empty, is separated from the outer container 200 of the separated pump assembly 300, and a new inner container 100 filled with contents is placed in the outer container 200.

[0112] Then, the existing pump assembly 300 can be combined with the inner container 100 and the outer container 200 to complete the refilling.

[0113] The inner container 100, having been depleted of its contents and separated from the outer container 200, is separated and replaced in a clean state with no residue, thus enabling reuse.

[0114] As described above, preferred embodiments are disclosed in the accompanying drawings and specification. Although specific terminology is used herein, these are for illustrative purposes only and are not intended to limit the meaning or scope of the invention as described in the claims. Therefore, those skilled in the art will understand that various modifications and other equivalent embodiments can be achieved. Consequently, the true scope of protection of this invention should be determined by the technical concept of the appended claims.

[0115] Explanation of reference numerals in the attached figures 1000: Contents discharge container 100: Content Container 110: Enlarged portion; 111: Fixed protrusion. 120: Blocking cover; 121: Installation of protrusion. 200: Outer container 300: Pump assembly; 310: Housing 320: Pump section; 330: Shoulder section 340: Button section 400: Piston; 410: Bend. 500: External cover.

Claims

1. A container for discharging contents, characterized in that, include: An inner container, the contents of which are housed inside the inner container; An outer container, wherein the inner container is housed within the outer container; A pump assembly is attached to the upper part of the outer container in a detachable manner. A portion of the pump assembly is housed and attached to the interior of the inner container and is pressurized to draw in and discharge the contents contained in the inner container. A piston is disposed inside the inner container and moves upward by the internal pressure of the inner container, so that the contents contained in the inner container are discharged through the pump assembly; as well as An interlocking cap is configured to fit snugly against the inner wall of the inner container and prevent the piston from being moved away from the inner container when it is combined with the pump assembly.

2. The contents discharge container according to claim 1, characterized in that, When the contents have been discharged and the piston is in contact with the lower part of the pump assembly, the blocking cap separates the piston from the pump assembly when the pump assembly is separated from the inner or outer container, thereby preventing the piston from being moved out of the inner container.

3. The contents discharge container according to claim 1, characterized in that, The lower end of the blocking cap is formed at a position lower than the lower part of the pump assembly housed in the inner container, such that the piston contacts the blocking cap before contacting the lower part of the pump assembly, thereby blocking contact between the piston and the pump assembly.

4. The contents discharge container according to claim 1, characterized in that, An enlarged portion, which is larger than the lower inner diameter of the inner container, is formed on the inner wall of the inner container. The blocking cover is disposed on a portion of the enlarged portion of the inner container to close the space between the enlarged portion and the pump assembly.

5. The contents discharge container according to claim 4, characterized in that, A fixing protrusion is formed on the inner wall of the enlarged portion. A mounting protrusion corresponding to the fixing protrusion is formed on the surface of the blocking cover that is in close contact with the inner wall of the enlarged portion. The blocking cover is secured to the inner wall of the enlarged portion by combining the placement protrusion with the fixing protrusion.

6. The contents discharge container according to claim 1, characterized in that, The lower part of the blocking cap is shaped to correspond to the upper part of the piston, so that the piston can discharge the contents contained inside the inner container without residue as the blocking cap and the piston are tightly attached.

7. The contents discharge container according to claim 1, characterized in that, The blocking cap is ultrasonically welded or interference-fitted to the inner wall of the inner container to fit snugly against the inner container.

8. The contents discharge container according to claim 1, characterized in that, The pump assembly includes: A housing, wherein at least a portion of the housing is incorporated within the interior of the inner container; The pump unit is attached to the housing and is compressed and decompressed by pressurization, thereby moving the contents inside the inner container; A shoulder portion, joined to the outer periphery of the outer casing, has an opening formed at its upper end. The shoulder portion joins and secures the outer casing and the pump portion to the outer container. The button section is attached to the open section of the shoulder and applies pressure to the pump section.

9. The contents discharge container according to claim 8, characterized in that, The upper part of the piston is shaped to correspond to the shape of the lower part of the housing and the pump part, so that the piston can be attached to the lower part of the housing.

10. The contents discharge container according to claim 1, characterized in that, The piston has a bent portion, the upper and lower ends of which are bent outwards. When the piston is housed inside the inner container, the bent portion deforms inward through elastic deformation while tightly adhering to the inner wall of the inner container, so as to discharge the contents housed inside the inner container without residue.

11. The contents discharge container according to claim 1, characterized in that, The inner container, the blocking cap, and the piston are formed from a single material.

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