A double container includes: an inner container adapted to store a given content therein and having a neck formed on top thereof; an outer container adapted to accommodate at least a portion of the inner container therein; a neck cap coupled to the neck of the inner container and having at least a portion accommodated in the inner container; pump assemblies coupled to top of the outer container, detachably coupled to the outer peripheral surface of the neck cap, having at least portions accommodated in the neck cap and inserted inside the inner container, and adapted to discharge the content therefrom; and a nozzle adapted to be pressurized by a user to discharge the content transferred from the pump assemblies through a discharge hole.

TECHNICAL FIELD

The present invention relates to a double container, and more specifically, to a double container that is capable of being simplified in coupling processes and being easily refilled with a content.

BACKGROUND ART

Generally, a content such as a cosmetic, and the like is stored in a container having given accommodation space and thus discharged by appropriate amount through an open outlet of the container, so that the content is applied directly to a user's skin or indirectly through a cosmetic tool to the user's skin.

For example, the content is filled in a contractible tube and then sold in the market, and if a cap coupled to the tube is removed from the tube to pressurize the outer surface of the tube in a compressive direction against the tube, a portion of the content may be discharged through an outlet formed on the end of the tube. However, in the case where the content is discharged by means of the pressurization of the tube itself, an amount of the content discharged may not be constant, thereby causing inconveniences in use.

To solve such a problem, accordingly, a pump container has been proposed. The pump container in which a given content is stored is configured to have a pump member coupled to top end thereof, so that through the control of the internal pressure of the pump member, the content stored in the pump container is sucked and discharged to the outside.

So as to allow the content of the pump container to be sucked by means of a negative pressure of the pump member coupled to the pump container and to allow the content inside the pump member to be discharged by means of a positive pressure to the outlet of the pump member, however, the pump container has to have a plurality of components coupled to one another, thereby causing a larger number of coupling processes than the existing tube and a high manufacturing cost.

In spite of the high manufacturing cost of the pump container, further, if the content is all consumed, the components of the pump container, such as the pump member, a nozzle, and the like may be all thrown away, without being recycled, which undesirably causes resource waste. Recently, therefore, a refillable product capable of filling the pump container again has been sold on the market, and in the case of the existing refillable product, initial filling of the content and a refill process are inconveniently performed. During the refill of the pump container, in specific, the content is exposed to an external environment so that it may be disadvantageously contaminated.

Accordingly, there is a need to develop a new pump container capable of being simplified in coupling processes and being refilled with a content more easily and sanitarily.

DISCLOSURE

Technical Problem

Accordingly, the present invention has been made in view of the above-mentioned problems occurring in the related art, and it is an object of the present invention to provide a double container that is capable of being simplified in coupling processes and being easily refilled with a content by means of a neck cap selectively detachable onto pump assemblies and an inner container.

The technical problems to be achieved through the present invention are not limited as mentioned above, and other technical problems not mentioned herein will be obviously understood by one of ordinary skill in the art through the following description.

Technical Solution

To accomplish the above-mentioned objects, according to the present invention, there is provided a double container. The double container may include: an inner container adapted to store a given content therein and having a neck formed on top thereof; an outer container adapted to accommodate at least a portion of the inner container therein; a neck cap coupled to the neck of the inner container and having at least a portion accommodated in the inner container; pump assemblies coupled to top of the outer container, detachably coupled to the outer peripheral surface of the neck cap, having at least portions accommodated in the neck cap and inserted inside the inner container, and adapted to discharge the content therefrom; and a nozzle adapted to be pressurized by a user to discharge the content transferred from the pump assemblies through a discharge hole.

Desirably, in a state of a first set in which the outer container, the neck cap, the pump assemblies, and the nozzle are coupled to one another, the inner container is inserted into the outer container through an open underside of the outer container to allow the neck cap to be fittedly coupled to the neck thereof.

Further, desirably, the pump assemblies may include: a screw cap detachably coupled to the outer peripheral surface of the neck cap; a pump coupled to the inside of the screw cap and having at least a portion accommodated in the inside of the neck cap to discharge the content therefrom; and a housing coupled to the outside of the screw cap and disposed on top of the outer container.

Further, desirably, the neck cap may include: a pump accommodation member for accommodating the at least portions of the pump assemblies therein; a first coupling member having at least a portion spaced apart from the outer peripheral surface of the pump accommodation member and adapted to fittedly insert the neck of the inner container thereinto; and a second coupling member formed on the outer peripheral surface of the neck cap and screw-coupled to the pump assemblies.

Also, desirably, at least one rotation prevention protrusion is formed on at least one of the inner peripheral surface of the first coupling member and the outer peripheral surface of the neck to prevent the neck cap from rotating when the pump assemblies rotate.

Moreover, desirably, if the pump assemblies rotate in a first direction, the coupling between the pump assemblies and the neck cap is released so that a third set in which the inner container and the neck cap are coupled to each other is separated from a second set in which the outer container, the pump assemblies, and the nozzle are coupled to one another.

Further, desirably, the pump assemblies and the outer container synchronizedly rotate unitarily.

Also, desirably, after the separation of the third set, a refill container filled with the content is inserted into the outer container through the open underside of the outer container and thus coupled to the second set.

Moreover, desirably, the refill container may include: a second inner container adapted to store the content therein and having a neck formed on top thereof; and a second neck cap coupled to the neck of the second inner container and having at least a portion accommodated in the second inner container, so that in a state where the second inner container is inserted into the outer container, if the pump assemblies rotate in a second direction opposite to the first direction, the pump assemblies are detachably coupled to the outer peripheral surface of the second neck cap.

Also, desirably, the refill container may further include a sealing cap detachably coupled to the outer peripheral surface of the second neck cap to seal the second inner container, and before the coupling to the second set, the sealing cap rotates in the first direction and is thus removed from the refill container.

Advantageous Effects

According to the present invention, the double container is configured to simply insert the inner container in which the content is filled into the assemblies of the components coupled to the outer container by means of the neck cap, thereby finishing the coupling of the components thereof and more simplifying the coupling processes of the product after the initial filling thereof.

According to the present invention, further, the double container is configured to allow the pump assemblies to rotate to thus separate the inner container and the neck cap as a unitary body therefrom and to allow the separated inner container and neck cap to be replaced with the refill container in a simply way to perform the refill, thereby improving the user's conveniences while in use and preventing the content from being contaminated.

MODE FOR INVENTION

Hereinafter, example embodiments will be described with reference to the accompanying drawings; however, for reference numerals, with respect to the same elements, even though they may be displayed in different drawings, such elements use same reference numerals as much as possible. Also, in explaining the example embodiments, detailed description on known elements or functions will be omitted if it is determined that such description will interfere with understanding of the embodiments. In addition, the example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein but may be modified and variously implemented by those skilled in the art. Further, top, bottom, left and right directions as will be described below are determined with reference to the drawings, and accordingly, the scope of the present invention is not necessarily restricted to the corresponding directions.

In the description, when it is said that one element is described as being “connected” to the other element, one element may be directly connected or coupled to the other element, but it should be understood that another element may be present between the two elements. When it is said that one portion is described as “includes” any component, further, one element may further include other components unless no specific description is suggested. Also, in explaining elements, terms like “first”, “second”, “A”, “B”, “(a)”, “(b)”, etc. may be used. However, such terms are used to distinguish one from the others only and they do not affect the essence, nature, sequence, order, etc.

FIG.1shows a double container according to an embodiment of the present invention,FIG.2shows an enlarged portion ofFIG.1, andFIGS.3and4show an inner container, a neck cap and a screw cap of the double container according to the embodiment of the present invention.

Referring toFIGS.1to4, a double container100according to an embodiment of the present invention includes containers110and120, a neck cap130, pump assemblies140,150, and160, a nozzle170, and an overcap180.

The containers110and120are an inner container110and an outer container120constituting the double container100. The inner container110stores a content therein and interlocks with the pump assemblies140,150, and160to apply the content to the outside of the double container100, and the outer container120accommodates the inner container110in the inside thereof.

The inner container110includes a first accommodation member111, a base112, and a neck113.

The first accommodation member111provides storage space for the content. As shown, it has a long cylindrical shape, but it may not be limited thereto. In this case, the content is a fluid of liquid or gel, which includes a cosmetic, a medicine, and a quasi-drug like tooth paste, but they are just exemplary, so that the content may include all kinds of materials capable of being discharged by means of pumping.

The base112is coupled to surround the lower end periphery of the first accommodation member111so that it can seal at least a portion of the open lower end periphery of the first accommodation member111. For example, if the double container100is a dip tube pump type container, the base112is configured to completely seal the lower end periphery of the first accommodation member111, and if the double container100is an airless pump type container, the base112is configured to have a given air inlet hole formed thereon so that the first accommodation member111communicates with external air. A coupling protrusion and a coupling groove and/or stepped projection may be formed on the outer peripheral surface of the first accommodation member111and/or the inner peripheral surface of the base112so as to fit the base112to the first accommodation member111. However, they are just exemplary, and therefore, various structures may be provided to perform such coupling. According to the present invention, further, at least a portion of the base112is exposed to the outside to insert or draw the inner container110into or from the outer container120.

The neck113extends upwardly from the top of the first accommodation member111and thus has a smaller inner diameter than the first accommodation member111. Top of the neck113is open to allow the content to communicate with the pump assemblies140,150, and160, and the neck113is sealed by means of coupling among the neck cap130and the pump assemblies140,150, and160. Through the neck113, accordingly, at least portions of the neck cap130and the pump assemblies140,150, and160are accommodated in the inner container110.

The outer container120includes a second accommodation member121and an upper edge122. The second accommodation member121provides accommodation space for locating the inner container110therein and has a cylindrical shape corresponding to the first accommodation member111.

The outer container120is configured to have the second accommodation member121whose underside is open to thus accommodate the inner container110therein. As the inner container110is inserted into the outer container120through the open underside of the second accommodation member121, the inner container110is accommodated inside the outer container120. According to the present invention, further, an outer diameter of the second accommodation member121is the same as of the base112or is smaller than that of the base112. When the inner container110is accommodated, accordingly, the lower end periphery of the second accommodation member121is seated onto top periphery of the base112so that the outer peripheral surface of the base112is exposed to the outside.

The upper edge122extends upwardly from top periphery of the second accommodation member121and thus has a smaller inner diameter than the second accommodation member121. Top of the upper edge122is open so that the inner peripheral surface of the upper edge122is coupled to the pump assemblies (particularly, the screw cap140). Through the coupling, if the pump assemblies140,150, and160rotate, the outer container120rotates together with the pump assemblies140,150, and160.

The neck cap130is coupled to the neck113of the inner container110, and at least a portion of the neck cap130is accommodated inside the inner container110through the neck113. Further, at least portions of the pump assemblies140,150, and160are accommodated inside the neck cap130, and in this case, the screw cap140among the pump assemblies140,150, and160is detachably coupled to the outer peripheral surface of the neck cap130.

The neck cap130includes a pump accommodation member131, a first coupling member132, and a second coupling member134.

The pump accommodation member131is open on top thereof to accommodate at least portions of the pump assemblies140,150, and160therein. For example, the pump accommodation member131has a shape corresponding to a cylinder151of the pump150, inserts the lower portion of the cylinder151thereinto, and seats a wing of the cylinder151onto top end thereof. In this case, at least a portion of the underside of the pump accommodation member131is open to allow the content of the inner container110to communicate with the pump assemblies140,150, and160.

The first coupling member132is fittedly coupled to the neck113of the inner container110. For example, the first coupling member132is coupled to the outer peripheral surface of the pump accommodation member131, while having at least a portion spaced apart from the outer peripheral surface of the pump accommodation member131to thus form insertion space133whose underside is open at the inside thereof. Accordingly, the neck113of the inner container110is fittedly inserted into the insertion space133so that the neck cap130is coupled to the neck113of the inner container110. To perform such coupling, a coupling protrusion and a coupling groove and/or stepped projection may be formed on the inner peripheral surface of the first coupling member132and/or the outer peripheral surface of the neck113, but they are just exemplary. Therefore, various structures may be provided to perform such coupling.

According to the present invention, at least one rotation prevention protrusion114may be formed on the inner peripheral surface of the first coupling member132and/or the outer peripheral surface of the neck113. The rotation prevention protrusion114provides a given frictional force to the inner peripheral surface of the first coupling member132and/or the outer peripheral surface of the neck113so that the rotation prevention protrusion114prevents the neck cap130from rotating when the pump assemblies140,150, and160rotate for their coupling or separation.

The second coupling member134is disposed on the outer peripheral surface of the neck cap130to allow the pump assemblies140,150, and160to be detachably coupled thereto. For example, the second coupling member134has a shape of a screw thread on at least one outer peripheral surface of the pump accommodation member131and the first coupling member132, and accordingly, the screw cap140among the pump assemblies140,150, and160is screw-coupled to the second coupling member134.

According to the embodiment of the present invention, at least one or more locking protrusions135are formed protrudingly from the outer peripheral surface of the neck cap130. When the neck cap130and the neck113are coupled to each other, the locking protrusions135are located close to the top end periphery of the first accommodation member111and then interlock with at least one or more locking protrusions144formed on the inner lower end periphery of the screw cap140to thus allow a user to recognize whether the pump assemblies140,150, and160are coupled to the neck cap130.

The pump assemblies140,150, and160are detachably coupled to the outer peripheral surface (particularly, the second coupling member134) of the neck cap130, and at least portions thereof are accommodated in the neck cap130and inserted inside the inner container110, thereby sealing the inner container110. As the nozzle170is pressurized, after that, the pump assemblies140,150, and160transfer the content stored in the inner container110to the nozzle170. For example, the pump assemblies140,150, and160represent the screw cap140, the pump150, and the housing160.

The screw cap140is coupled to the outer peripheral surface of the pump150to fix the pump150thereto and detachably attached to the outer peripheral surface of the neck cap130coupled to the neck113of the inner container110. For example, the screw cap140has a third coupling member141formed on the inner peripheral surface thereof to a shape of a screw thread corresponding to the second coupling member134of the neck cap130, and as the pump assemblies140,150, and160rotate, the third coupling member141interlocks with the second coupling member134so that the screw cap140is detachably coupled to the neck cap130. For example, if the screw cap140rotates in a first direction, it is separated from the neck cap130, and if the screw cap140rotates in a second direction opposite to the first direction, it is screw-coupled to the neck cap130.

The screw cap140has a fixing edge142protruding inwardly from the inner peripheral surface thereof. The fixing edge142is adapted to fix the pump150thereto and to downwardly pressurize the wing of the cylinder151if the screw cap140is coupled to the neck cap130, so that the pump assemblies140,150, and160can be more stably coupled to the neck cap130and simultaneously air tightness among the inner container110, the neck cap130, and the pump assemblies140,150, and160can be more firmly achieved.

As the lower end periphery of the screw cap140is inserted into the inner peripheral surface of the upper edge122of the outer container120, the pump assemblies140,150, and160are coupled to the outer container120so that they synchronizedly rotate with the outer container120. To do this, at least one or more coupling protrusions143having a given shape are formed on the outer peripheral surface of the lower end of the screw cap140, and coupling grooves (not shown) corresponding to the coupling protrusions143are concavely formed on the inner peripheral surface of the upper edge122of the outer container120, so that the pump assemblies140,150, and160are coupled to the outer container120and thus synchronizedly rotate with the outer container120.

Further, the screw cap140has the at least one or more locking protrusions144protruding inwardly from the inner peripheral surface of the lower end thereof. The locking protrusions144interlock with the locking protrusions135formed on the outer peripheral surface of the neck cap130to allow the user to recognize whether the pump assemblies140,150, and160are coupled to the neck cap130and to prevent the coupling from being arbitrarily released. According to the present invention, each locking protrusion144has a pair of first protrusion144-1and second protrusion144-2different in height. For example, the first protrusion144-1has a lower protruding height than the second protrusion144-2, so that when the screw cap140rotates in the second direction, the first protrusion144-1provides a given resistance to the rotation of the screw cap140, and as the locking protrusions135of the neck cap130are moved over the first protrusions144-1and then locked onto the second protrusions144-2, next, the rotation in the second direction of the screw cap140is limited. In this case, each locking protrusion135of the neck cap130is accommodated between the first protrusion144-1and the second protrusion144-2, and when the double container100is carried or kept at a given place, accordingly, the screw cap140can be prevented from being arbitrarily separated from the neck cap130through the rotation in the first direction.

Further, the screw cap140has a plurality of coupling protrusions145vertically formed on the outer peripheral surface of the upper portion thereof. The plurality of coupling protrusions145serves to fix the housing160to the outer peripheral surface of the screw cap140. Accordingly, if the housing160is grasped by the user and thus rotates, the pump assemblies140,150, and160rotate unitarily.

The pump150communicates with the inner container110so that it transfers the content stored in the inner container110to the nozzle170in accordance with the pressurization of the nozzle170. For example, the pump150includes the cylinder151having an inlet communicating with the interior of the inner container110, a seal cap152disposed at the inner peripheral wall of the cylinder151, a sealing member153coupled to the top end periphery of the cylinder151to suppress the seal cap152from rising, a piston rod154having an inlet formed on one end thereof and open and closed by means of the seal cap152and connected to a discharge hole171of the nozzle170, a stem155coupled and elevated unitarily with the piston rod154and fitted to the inside of the nozzle170, and an elastic member156for providing an elastic force in a direction toward the nozzle170from the sealing member153. However, such a configuration of the pump150is just exemplary, and therefore, the pump150may be freely configured, without being limited thereto.

The pump150is fixed to the screw cap140, and at least a portion of the pump150is accommodated in the neck cap130. In specific, top end periphery of the cylinder151and/or the sealing member153are coupled to the fixing edge142of the screw cap140, and at least a portion of the cylinder151is accommodated in the pump accommodation member131of the neck cap130. In this case, the inlet of the cylinder151communicates with the open underside of the pump accommodation member131, and as the nozzle170is pressurized, accordingly, the pump150sucks the content of the inner container110and transfers the sucked content to the nozzle170.

The housing160is coupled to the outside of the screw cap140to surround the screw cap140and serves to accommodate the pump assemblies140and150as the screw cap and the pump therein to protect them from the outside.

The nozzle170transfers the external force applied from the user to the pump150and discharges the content discharged through the pump150to the outside. In specific, the nozzle170includes a nozzle tip for receiving the external force applied from the user, a flow path formed inside the nozzle tip to allow the content to communicate with the pump150, and the discharge hole171for discharging the content from the flow path to the outside.

The overcap180is adapted to cover the nozzle170to prevent an accidental external force from being applied to the nozzle170and to protect the nozzle170from contamination. The overcap180is detachably coupled to the outer container120and/or the housing160among the pump assemblies140,150, and160and separated therefrom by means of the external force applied from the user. If the pump assemblies140,150, and160are separated from the neck cap130coupled to the inner container110, the overcap180is separated from the inner container110, together with the outer container120, the pump assemblies140,150, and160, and the nozzle170. To improve the coupling force of the overcap180, a stepped projection (having no reference numeral) and a locking projection (having no reference numeral) may be formed on the inner peripheral surface of the overcap180and/or the outer peripheral surface of the housing160, but they are just exemplary. Therefore, various structures may be provided to perform the detachable coupling of the overcap180.

According to the embodiment of the present invention, the double container100further includes a tube190communicating with the pump150to suck the content of the inner container110. To do this, the neck cap130further includes a tube coupling portion136. The tube coupling portion136extends downwardly from the pump accommodation member131and communicates with the interior of the pump accommodation member131, and if the tube190is fittedly coupled to the tube coupling portion136, the inlet of the cylinder151accommodated in the inside of the pump accommodation member131communicates with the tube190, so that as the nozzle170is pressurized, the tube190sucks the content of the inner container110and transfers the sucked content to the nozzle170.

FIGS.5and6show examples of use of the double container according to the embodiment of the present invention.

In specific,FIG.5shows a process of coupling the components of the double container100after the content has been first filled in the inner container110, andFIG.6shows a process of separating the inner container110from the double container100after the content has been consumed.

Referring toFIG.5, the inner container110in which the content is first filled is inserted into the open underside of the outer container120, thereby providing the double container100.

In this case, the outer container120, the neck cap130, the pump assemblies140,150, and160, and the nozzle170are coupled to one another to provide a first set. According to embodiments of the present invention, further, the overcap180and/or the tube190are coupled to the first set.

If the inner container110in which the content is first filled is inserted into the open underside of the outer container120, the neck cap130and at least portions of the pump assemblies140,150, and160accommodated in the neck cap130are inserted into the inner container110, and the neck113of the inner container110is fittedly coupled to the interior of the first coupling member132of the neck cap130, thereby providing the double container100.

Referring toFIG.6, if the content of the inner container110is consumed, the pump assemblies140,150, and160and/or the outer container120rotate in the first direction to separate the inner container110and the neck cap130therefrom.

For example, if the housing160among the pump assemblies140,150, and160and/or the outer container120rotate in the first direction with respect to the inner container110, the coupling among the pump assemblies (particularly, the screw cap140) and the neck cap130may be released. Next, as the inner container110is drawn from the open underside of the outer container120, a third set in which the inner container110and the neck cap130are coupled to each other is separated from a second set in which the outer container120, the pump assemblies140,150, and160, and the nozzle170are coupled to one another.

Hereinafter, a refill container in which the content is stored is coupled to the second set so as to refill the double container100with the content, which will be explained with reference toFIG.8.

FIG.7shows a refill container according to the embodiment of the present invention.

Referring toFIG.7, a refill container200includes a second inner container210, a second neck cap230, and a sealing cap240, and according to embodiments of the present invention, further, the refill container200may include a tube290.

In this case, the second inner container210, the second neck cap230, and the tube290have the same configuration as the inner container110, the neck cap130, and the tube190as mentioned above with reference toFIGS.1to6.

The sealing cap240is detachably coupled to the outer peripheral surface of the second neck cap230and serves to seal the second inner container210. The sealing cap240further includes a fourth coupling member241formed on the inner peripheral surface thereof and screw-coupled to a second coupling member234formed on the outer peripheral surface of the second neck cap230. For example, the fourth coupling member241has a shape of a screw thread corresponding to the second coupling member234of the second neck cap230. Further, the sealing cap240includes an extension portion242protruding downwardly from the inner top thereof. The extension portion242is inserted into the top end of a pump accommodation member231of the second neck cap230so that at least one area thereof comes into close contact with the inner peripheral surface of the pump accommodation member231.

The second inner container210is sealed by unitarily coupling the sealing cap240and the second neck cap230to a neck213. For example, in a state where the sealing cap240is coupled to the outer peripheral surface of the second neck cap230, the tube290and the second neck cap230are inserted into the second inner container210through the neck213, and the neck213is fittedly coupled to a first coupling member232of the second neck cap230, so that the second inner container210is sealed.

FIG.8shows examples of use of the refill container in the double container according to the present invention.

In specific,FIG.8shows a process of coupling the refill container as shown inFIG.7to the second set of the double container100to refill the double container100. In this case, as mentioned above, the second set is configured to couple the outer container120, the pump assemblies140,150, and160, and the nozzle170to one another.

Referring first toFIG.8a, the sealing cap240rotates in the first direction and is thus removed from the refill container200before the refill container200is coupled.

Referring next toFIG.8b, the second inner container210coupled to the second neck cap230is inserted into the outer container120through the open underside of the outer container120. Accordingly, the second inner container210is accommodated in the outer container120, and the pump150is accommodated in the pump accommodation member231of the second neck cap230and thus inserted into the second inner container210.

Referring toFIG.8c, after that, the pump assemblies140,150, and160and/or the outer container120rotate in the second direction with respect to the second inner container210, and accordingly, the second coupling member234of the second neck cap230is screw-coupled to the third coupling member141of the screw cap140.

Through such processes, the double container100can be refilled with the content easily and sanitarily.

FIG.9shows a double container and a refill container according to another embodiment of the present invention.

A double container300and a refill container400as shown inFIG.9have similar configurations to the double container100and the refill container200as shownFIGS.1to8, and in this case, differences between the embodiments of the present invention will be discussed below.

Referring toFIG.9a, the double container300is configured to allow the cylinder of a pump350to be exposed to the open underside of a neck cap330so that the cylinder directly communicates with an inner container310.

Further, the double container300includes a disc315disposed inside the inner container310. The disc315serves to push the content upwardly as the content stored in the inner container310becomes consumed, and in specific, the disc315is kept to come into close contact with the inner peripheral wall of the inner container310, so that as the content is discharged to decrease in volume in the inner container310, the disc315moves up.

To allow the disc315to move up gently, given air inlet holes (having no reference numeral) are formed on the underside of the inner container310(particularly, the underside of the base). If the disc315moves up by an amount of the content discharged, air is introduced into the inner container310through the air inlet holes. Like this, the content of the inner container310is stored in the state of being blocked from external air by means of the disc315, and in this case, accordingly, the pump350of the double container300is an airless pump.

Referring toFIG.9b, the refill container400includes a second neck cap430having the same configuration as the neck cap330, and a sealing cap440is screw-coupled to the outer peripheral surface of the second neck cap430. A second inner container410in which the content is stored has the same configuration as the inner container310and is sealed by fittedly coupling the second neck cap430coupled to the sealing cap440to the neck thereof. Like the inner container310, further, the second inner container410includes a disc415disposed at the inside thereof and given air inlet holes (having no reference numeral) formed on the underside thereof.

While the present invention has been described with reference to the particular illustrative embodiments, it is not to be restricted by the embodiments but only by the appended claims. It is to be appreciated that those skilled in the art can change or modify the embodiments without departing from the scope and spirit of the present invention. It should be therefore understood that the embodiments of the present invention are just exemplary embodiments, while not limiting the present invention. Persons skilled in the relevant art can appreciate that many modifications and variations are possible in light of the above teachings. It is therefore intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.