阅读说明：本技术 双重容器 (Dual container ) 是由 李在玉 金旻材 于 2020-11-23 设计创作，主要内容包括：根据本发明的一个实施例,提供一种双重容器。所述双重容器包括：内容器,储存内容物,在其上部形成颈部；外容器,向内侧容纳所述内容器的至少一部分；颈帽,与所述内容器的颈部结合,至少一部分被容纳到所述内容器的内侧；泵组件,与所述外容器的上部结合,与所述颈帽的外面可拆卸地结合,至少一部分被容纳到所述颈帽而被插入到所述内容器的内侧,排出所述内容物；以及喷嘴部,随着用户施压,通过排出口排出由所述泵组件传送的内容物。(According to one embodiment of the present invention, a dual container is provided. The dual container includes: an inner container for storing contents and forming a neck portion at an upper portion thereof; an outer container that accommodates at least a part of the inner container to the inside; a neck cap coupled to a neck portion of the inner container, at least a portion of which is received inside the inner container; a pump assembly coupled to an upper portion of the outer container, detachably coupled to an outer face of the neck cap, at least a portion of which is received in the neck cap to be inserted into an inner side of the inner container, and discharging the contents; and a nozzle part discharging the contents delivered by the pump assembly through a discharge port as the user applies pressure.)

1. A dual container, comprising:

an inner container for storing contents and forming a neck portion at an upper portion thereof;

an outer container that accommodates at least a part of the inner container to the inside;

a neck cap coupled to a neck portion of the inner container, at least a portion of which is received inside the inner container;

a pump assembly coupled to an upper portion of the outer container, detachably coupled to an outer face of the neck cap, at least a portion of which is received in the neck cap to be inserted into an inner side of the inner container, and discharging the contents; and

a nozzle portion through which the contents delivered by the pump assembly are discharged as a result of pressure applied by a user.

2. The dual container of claim 1,

in a first set of states in which the outer container, the neck cap, the pump assembly and the nozzle portion are coupled to each other, the neck cap is inserted into and coupled to a neck portion of the inner container as the inner container is inserted through an open lower end of the outer container.

3. The dual container of claim 1,

the pump assembly includes:

a screw cap detachably coupled with an outer surface of the neck cap;

a pump part coupled to an inner side of the screw cap, at least a portion of which is received in an inner side of the neck cap to discharge the contents; and

and a housing coupled to an outer side of the screw cap and disposed at an upper portion of the outer container.

4. The dual container of claim 1,

the neck cap includes:

a pump housing that houses at least a portion of the pump assembly;

a first coupling portion formed at least partially spaced apart from an outer surface of the pump receiving portion, the neck portion of the inner container being inserted into the inner side to be coupled thereto; and

and a second coupling portion formed at an outer side of the neck cap to be screw-coupled with the pump assembly.

5. The dual container of claim 4,

at least one rotation preventing protrusion is formed at least one of an inner side of the first coupling portion and an outer side of the neck portion of the inner container, for preventing rotation of the neck cap when the pump assembly is rotated.

6. The dual container of claim 1,

as the pump assembly is rotated in a first direction, the pump assembly is disengaged from the neck cap and a third set of the inner container and the neck cap are separated from a second set of the outer container, the pump assembly, and the nozzle portion that are engaged with one another.

7. The dual container of claim 6,

the pump assembly rotates in unison with the outer container.

8. The dual container of claim 6,

after separating the third group, a filling container filled with the content is inserted through the open lower end of the outer container to be combined with the second group.

9. The dual container of claim 8,

the filling container includes:

a second inner container storing the contents and forming a neck portion at an upper portion thereof; and

a second neck cap associated with the neck of the second inner container, at least a portion of which is received inside the second inner container,

the pump assembly is detachably coupled to an outer face of the second neck cap as the pump assembly is rotated in a second direction opposite to the first direction in a state where the second inner container is inserted toward an inner side of the outer container.

10. The dual container of claim 9,

the filling container further comprises:

a sealing cap detachably coupled to an outer face of the second neck cap, sealing the second inner container,

removing the sealing cap from the filling container by rotating in the first direction before combining with the second set.

Technical Field

The present invention relates to a dual container, and more particularly, to a dual container capable of easily assembling a container and filling its contents.

Background

Generally, contents such as cosmetics are stored in a container having a specific receiving space, and are discharged through an open outlet in an appropriate amount, thereby being directly transferred to the skin or indirectly transferred to the skin through a cosmetic tool.

For example, the contents are sold in a collapsible container, and when a user removes a cap coupled to the tube container and presses the outside of the container in a direction of compression, a portion of the contents will be discharged through an outlet at the end of the tube container. However, the pressing of the container itself to discharge the contents has a problem that it is inconvenient because the discharge amount is not fixed.

Therefore, to improve such a problem, a pump container may be used. The pump container is configured such that a pump member is coupled to an upper end of a container in which contents are stored, and the contents stored in the container are sucked and discharged to the outside by adjusting an internal pressure of the pump member.

However, since the pump container has a structure in which a plurality of members are combined in order to suck the contents inside the container by negative pressure and discharge the contents inside the pump member to the outlet by positive pressure by combining the pump member, the assembly process is complicated and the manufacturing cost is high as compared with a tube container or the like.

In addition, the pump container has a problem that it is expensive to manufacture, and when the contents are completely consumed, the pump member, the nozzle, and other members cannot be reused, and the entire pump container needs to be discarded, which results in waste of resources. Accordingly, recently, a refillable product capable of being used to fill the contents of a pump container has been introduced, and the conventional refillable product has a disadvantage in that the process of initially filling and refilling the contents is complicated, and particularly, the contents are exposed to the external environment and contaminated when being refilled.

Therefore, there is a need for a new pump container that can simplify the assembly of the container and fill the contents more easily and hygienically.

Disclosure of Invention

Technical problem

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a dual container in which a container can be easily assembled and the contents can be easily filled by a detachable neck cap that can be selectively coupled to an inner container.

Technical problems of the present invention are not limited to the above-mentioned technical problems, and other technical problems not mentioned will be clearly understood by those skilled in the art through the following descriptions.

Means for solving the problems

According to one embodiment of the present invention, a dual container is provided. The dual container includes: an inner container for storing contents and forming a neck portion at an upper portion thereof; an outer container that accommodates at least a part of the inner container to the inside; a neck cap coupled to a neck portion of the inner container, at least a portion of which is received inside the inner container; a pump assembly coupled to an upper portion of the outer container, detachably coupled to an outer face of the neck cap, at least a portion of which is received in the neck cap to be inserted into an inner side of the inner container, and discharging the contents; and a nozzle part discharging the contents delivered by the pump assembly through a discharge port as the user applies pressure.

Preferably, in a first set of a state in which the outer container, the neck cap, the pump assembly and the nozzle portion are coupled to each other, the neck cap may be inserted into a neck portion coupled to the inner container as the inner container is inserted through an open lower end of the outer container.

And, preferably, the pump assembly may include: a screw cap detachably coupled with an outer surface of the neck cap; a pump part coupled to an inner side of the screw cap, at least a portion of which is received in an inner side of the neck cap to discharge the contents; and a housing coupled to an outer side of the screw cap and disposed at an upper portion of the outer container.

And, preferably, the neck cap may include: a pump housing that houses at least a portion of the pump assembly; a first coupling portion formed at least partially spaced apart from an outer surface of the pump receiving portion, the neck portion of the inner container being inserted into the inner side to be coupled thereto; and a second coupling portion formed outside the neck cap to be screw-coupled with the pump assembly.

Also, preferably, at least one rotation preventing protrusion may be formed at least one of an inner side of the first coupling portion and an outer side of the neck portion of the inner container, for preventing rotation of the neck cap when the pump assembly is rotated.

Also, preferably, as the pump assembly is rotated in the first direction, the coupling of the pump assembly with the neck cap is released, and a third group of the inner container and the neck cap coupled may be separated from a second group of the outer container, the pump assembly, and the nozzle portion coupled to each other.

Also, preferably, the pump assembly and the outer container are rotatable in unison.

Further, after separating the third group, a filling container filled with the content may be inserted through the open lower end of the outer container to be combined with the second group.

And, preferably, the filling container includes: a second inner container storing the contents and forming a neck portion at an upper portion thereof; and a second neck cap coupled to a neck portion of the second inner container, at least a portion of which is received inside the second inner container, the pump assembly being detachably coupled to an outside of the second neck cap as the pump assembly is rotated in a second direction opposite to the first direction in a state where the second inner container is inserted inside the outer container.

And, preferably, the filling container further comprises: a sealing cap removably coupled to an outer face of the second neck cap to seal the second inner container, the sealing cap being removable from the fill container by rotation in the first direction prior to coupling with the second set.

ADVANTAGEOUS EFFECTS OF INVENTION

The present invention has an effect that the assembly of the dual container can be completed in a simple manner by inserting the inner container filled with the contents into the inside of the assembly of the remaining members combined with the outer container using the neck cap, so that the assembly process of the product can be more simplified after the initial filling of the contents.

Also, the present invention has an effect in that the inner container and the neck cap can be separated from the dual container as a whole by rotating the pump assembly and the filling of the contents can be achieved in a simple manner of replacing them with the filling container, so that the user convenience can be increased and the contamination of the contents can be prevented.

Drawings

In order to more fully understand the drawings referred to in the description of the invention, a brief description of each drawing is provided below.

Fig. 1 is a dual container of one embodiment of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 and 4 show the inner container, the neck cap and the screw cap of the dual container according to one embodiment of the present invention.

Fig. 5 and 6 are use examples of a dual container according to an embodiment of the present invention.

Fig. 7 is a fill container of one embodiment of the present invention.

Fig. 8 is an example of use of a dual container of one embodiment of the present invention.

Fig. 9 is a dual container and fill container of one embodiment of the present invention.

Detailed Description

Embodiments of the present invention are described in detail below with reference to the accompanying drawings. With regard to the addition of reference numerals to components of the various figures, the same reference numerals are used as much as possible for the same components on different figures. In describing the embodiments of the present invention, it is determined that detailed descriptions of related well-known components or functions may hinder understanding of the embodiments of the present invention, and the detailed descriptions thereof are omitted. Also, embodiments of the present invention will be described below, but the technical idea of the present invention is not limited thereto or thereto, and can be variously modified by those skilled in the art to implement. In addition, directions such as up, down, left, and right, etc., described below are based on the drawings for convenience, and the scope of the present invention is not limited to the directions.

In the present invention, the term "connected" to another part includes "directly connected" and "indirectly connected" to another part with another element interposed therebetween. Throughout the specification, unless the context clearly dictates otherwise, the word "comprise" or "comprises" a certain element means that the other element may be included but not excluded. Also, in describing the components of the embodiments of the present invention, the terms first, second, A, B, (a), (b), etc. may be used. Such terms are merely used to distinguish one element from another element, and the nature, order, etc. of the respective elements are not limited by the terms.

Fig. 1 is a double container according to an embodiment of the present invention, fig. 2 is a partially enlarged view of fig. 1, and fig. 3 and 4 are an inner container, a neck cap, and a screw cap of the double container according to an embodiment of the present invention.

Referring to fig. 1 to 4, a dual container 100 according to an embodiment of the present invention may include container parts 110, 120, a neck cap 130, pump assemblies 140, 150, 160, a nozzle part 170, and a top cap 180.

The container portions 110 and 120 may constitute a double container 100 structure of the inner container 110 and the outer container 120. The inner container 110 stores contents therein, and transfers the contents to the outside in conjunction with the pump assemblies 140, 150, 160, and the outer container 120 can accommodate the inner container 110 therein.

The inner container 110 may include a first receiving portion 111, a cushion portion 112, and a neck portion 113.

The first receiving portion 111 forms a receiving space for storing contents, and may have a long cylindrical shape as shown in the drawing, but is not limited thereto. The contents are liquid or gel-like fluid, and may be cosmetics, pharmaceuticals, or external medicines such as toothpaste, but these are merely examples and may include all kinds of substances discharged by a pump.

The cushion part 112 is coupled to wrap the lower end of the first receiving part 111, and may seal at least a portion of the opened lower end of the first receiving part 111. For example, if the double container 100 is a dip tube pump (dip tube pump) type, the pad 112 completely seals the lower end of the first receiving portion 111, and if the double container 100 is a vacuum pump (air pump) type, a predetermined air inlet hole is formed in the pad 112 to allow air to flow between the first receiving portion 111 and the outside. The outer surface of the first receiving portion 111 and/or the inner surface of the mat portion 112 may be formed with coupling protrusions, coupling grooves, stepped portions, and the like for insertion coupling of the mat portion 112, but this is merely exemplary, and various coupling structures may be employed. Also, in one embodiment, the cushion 112 may be configured such that at least a portion thereof is exposed to the outside in order to insert the inner container 110 into the outer container 120 or remove it from the outer container 120.

The neck portion 113 is formed to extend upward from the upper end of the first receiving portion 111, and has a narrower inner diameter than the first receiving portion 111. The upper end of the neck 113 is open for communication with the contents between the pump assemblies 140, 150, 160, and the neck cap 130 is sealed in conjunction with the pump assemblies 140, 150, 160. Through the neck 113, the neck cap 130 and at least a portion of the pump assembly 140, 150, 160 can be received inside the inner container 110.

The outer container 120 includes a second receiving portion 121 and an upper edge portion 122. The second receiving part 121 forms a receiving space for receiving the inner container 110, and may be formed in a cylindrical shape corresponding to the first receiving part 111.

The lower end of the second container part 121 may be open for the outer container 120 to contain the inner container 110. The inner container 110 may be received inside the outer container 120 by inserting the inner container 110 through the open lower end of the second receiving part 121. Also, in one embodiment, the outer diameter of the second receiving portion 121 is the same as the outer diameter of the cushion portion 112, or is smaller than the outer diameter of the cushion portion 112. Accordingly, when the inner container 110 is received, the lower end periphery of the second receiving portion 121 is placed on the upper end of the mat portion 112, and the outer surface of the mat portion 112 is exposed to the outside.

The upper edge portion 122 is formed to be extended upward from the upper end of the second receiving portion 121 and has a narrower inner diameter than the second receiving portion 121. The upper end of the upper rim portion 122 is opened, and a pump assembly (in particular, a screw cap 140) is coupled to the inside of the upper rim portion 122. By this combination, the outer container 120 can rotate synchronously with the pump assemblies 140, 150, 160 as the pump assemblies 140, 150, 160 rotate.

The neck cap 130 is coupled to the neck portion 113 of the inner container 110, and at least a portion is received inside the inner container 110 through the neck portion 113. And, the inner side of the neck cap 130 receives at least a portion of the pump assembly 140, 150, 160, and the screw cap 140 of the pump assembly 140, 150, 160 is detachably coupled to the outer side of the neck cap 130.

The neck cap 130 may include a pump receiving portion 131, a first coupling portion 132, and a second coupling portion 134.

The upper end of the pump receiving part 131 is opened to receive at least a portion of the pump assembly 140, 150, 160 inside. For example, the pump receiving part 131 may have a shape corresponding to the cylinder 151 of the pump part 150, a lower portion of the cylinder 151 being inserted into the inside of the pump receiving part 131, and a wing portion of the cylinder 151 being received to an upper end of the pump receiving part 131. Wherein at least a portion of the lower end of the pump receiving part 131 is open so that the contents of the inner container 110 can communicate with the pump assemblies 140, 150, 160.

The first coupling portion 132 may be insert-coupled with the neck portion 113 of the inner container 110. For example, the first coupling portion 132 is connected to an outer surface of the pump receiving portion 131, at least a portion of which is formed to be spaced apart from the outer surface of the pump receiving portion 131, and an insertion space 133 having an open lower end is formed inside the first coupling portion 132. The neck portion 113 of the inner container 110 is inserted into such an insertion space 133 to be fitted, so that the neck cap 130 is combined with the neck portion 113 of the inner container 110. For such coupling, coupling protrusions, coupling grooves, and/or stepped portions may be formed on the inner surface of the first coupling portion 132 and/or the outer surface of the neck portion 113, but this is merely exemplary, and various coupling structures may be employed in addition thereto.

In one embodiment, the inner side of the first coupling portion 132 and/or the outer side of the neck portion 113 may be formed with at least one rotation preventing protrusion 114. The rotation preventing protrusions 114 provide a certain frictional force to the inner face of the first coupling portion 132 and the outer face of the neck 113, and prevent the neck cap 130 from rotating when rotating for coupling or decoupling with the pump assembly 140, 150, 160.

The second coupling portion 134 is formed outside the neck cap 130 to be detachably coupled with the pump assemblies 140, 150, 160. For example, the second coupling portion 134 may be formed in a screw shape on the outer surface of at least one of the pump receiving portion 131 and the first coupling portion 132, and such second coupling portion 134 is screw-coupled to the screw cap 140 of the pump assembly 140, 150, 160.

In one embodiment, the outer face of the neck cap 130 may be formed with at least one hooking protrusion 135. When the neck cap 130 is coupled with the neck portion 113, the hooking protrusion 135 abuts on the upper end of the first receiving portion 111 and is engaged with at least one hooking protrusion 144 formed at the inner lower end of the screw cap 140, so that the user can recognize whether the pump assembly 140, 150, 160 is coupled with the neck cap 130.

The pump assembly 140, 150, 160 is detachably coupled to the outside of the neck cap 130 (particularly, the second coupling part 134), at least a portion of which is received in the neck cap 130 to be inserted into the inside of the inner container 110, thereby sealing the inner container 110. Thereafter, the contents contained in the inner container 110 may be transferred to the nozzle portion 170 based on the pressurization of the nozzle portion 170. For example, the pump assemblies 140, 150, 160 may be constructed of a screw cap 140, a pump portion 150, and a housing 160.

A screw cap 140 is coupled to the outside of the pump portion 150 to fix the pump portion 150, and is detachably coupled to the outside of the neck cap 130 coupled to the neck portion 113 of the inner container 110. For example, the inner surface of the screw cap 140 may be formed with a third coupling portion 141 having a screw thread form corresponding to the second coupling portion 134 of the neck cap 130, and the second coupling portion 134 and the third coupling portion 141 are engaged with each other by the rotation of the pump assemblies 140, 150, 160, thereby being detachably coupled with the neck cap 130. For example, the screw cap 140 is separated from the neck cap 130 when rotated in a first direction, and is screw-coupled to the neck cap 130 when rotated in a second direction opposite to the first direction.

The screw cap 140 may include a fixing rim portion 142 protruding inward from the inner surface. The fixing rim 142 fixes the pump part 150 while pressing down the wing of the cylinder 151 when the screw cap 140 is coupled with the neck cap 130, so that the pump assembly 140, 150, 160 is more stably coupled to the neck cap 130 while the airtightness between the inner container 110, the neck cap 130, and the pump assembly 140, 150, 160 is more robust.

The lower end of the screw cap 140 is inserted into the inside of the upper rim portion 122 of the outer container 120, and the pump assemblies 140, 150, 160 are combined with the outer container 120 to be capable of rotating synchronously. For this, at least one coupling protrusion 143 having a predetermined shape may be formed on the outer surface of the lower end of the screw cap 140, and coupling grooves (not shown) corresponding to the coupling protrusions 143 may be concavely formed on the inner surface of the upper edge portion 122 of the outer container 120. The pump assemblies 140, 150, 160 are coupled to the outer container 120 so as to be synchronously rotatable based on the coupling protrusion 143 of the screw cap 140 being inserted into the coupling groove of the upper rim portion 122.

At least one hooking protrusion 144 may be formed on an inner surface of a lower end of the screw cap 140 to protrude in an inner direction. Such hooking protrusions 144 and hooking protrusions 135 formed on the outside of the neck cap 130 are engaged with each other, thereby enabling a user to recognize whether the pump assembly 140, 150, 160 is coupled with the neck cap 130 or not, preventing the coupling from being arbitrarily released. In one embodiment, the hooking protrusion 144 may be double, and is composed of a first protrusion 144-1 and a second protrusion 144-2 having different heights. For example, the first protrusion 144-1 has a lower protruding height than the second protrusion 144-2, and when the screw cap 140 is rotated in the second direction, the first protrusion 144-1 provides a certain resistance to the rotation of the screw cap 140, and then the hooking protrusion 135 of the neck cap 130 rides over the first protrusion 144-1 and is caught by the second protrusion 144-2, restricting the rotation of the screw cap 140 in the second direction. Wherein the hooking protrusion 135 of the neck cap 130 is received between the first protrusion 144-1 and the second protrusion 144-2, so that the screw cap 140 is prevented from being rotated in the first direction and being separated from the neck cap 130 at will when the dual container 100 is carried or stored.

A plurality of coupling protrusions 145 are formed in a vertical direction on the outer surface of the upper portion of the screw cap 140. The plurality of coupling protrusions 145 may fix the case 160 to the outside of the screw cap 140. Accordingly, when the housing 160 is held by a user for rotation, the pump assemblies 140, 150, 160 will rotate as a unit.

The pump portion 150 communicates with the inner container 110, and the contents contained in the inner container 110 can be transferred to the nozzle portion 170 based on the pressurization of the nozzle portion 170. For example, pump section 150 may include: a cylinder 151 having an inlet communicating with the inside of the inner container 110, a sealing cap 152 positioned on the inner wall of the cylinder 151, a sealing portion 153 coupled to the periphery of the upper end of the cylinder 151 to suppress the rising of the sealing cap 152, a piston rod 154 having an inlet opened and closed by the sealing cap 152 at one end and connected to a discharge port 171 of the nozzle portion 170, a rod 155 coupled to be integrally raised with the piston rod 154 and inserted into the nozzle portion 170, and an elastic portion 156 for providing an elastic force from the sealing portion 153 toward the nozzle portion 170. However, the structure of the pump section 150 is merely exemplary and not limited thereto, and various structures may be employed in addition thereto.

The pump section 150 may be secured by a screw cap 140, at least a portion of which is received into the neck cap 130. That is, the upper end and/or the sealing portion 153 of the cylinder 151 is coupled to the fixing edge portion 142 of the screw cap 140, and at least a portion of the cylinder 151 is received in the pump receiving portion 131 of the neck cap 130. Wherein an inlet of the cylinder 151 communicates with an open lower end of the pump receiving part 131, and the pump part 150 sucks the contents of the inner container 110 based on the pressing of the nozzle part 170 and transfers them to the nozzle part 170.

The casing 160 is coupled to the outside of the screw cap 140 to surround the screw cap 140, and internally houses and protects the components of the pump assembly 140, 150, 160.

The nozzle 170 receives external force from a user and transmits the external force to the pump 150, and discharges the contents discharged from the pump 150 to the outside, and specifically, may include a nozzle tip receiving the external force from the user, a channel formed inside the nozzle tip and forming a content communication path with the pump 150, and a discharge port 171 discharging the contents from the channel to the outside.

The over cap 180 may cover the nozzle part 170 to prevent the nozzle part 170 from being unexpectedly applied with external force and to protect the nozzle part 170 from contamination. The top cap 180 is removably coupled to the outer container 120 and/or the housing 160 of the pump assembly 140, 150, 160, which can be detached by the user. When the pump assembly 140, 150, 160 is detached from the neck cap 130 coupled to the inner container 110, the top cap 180 may be detached from the inner container 110 as one with the outer container 120, the pump assembly 140, 150, 160, and the nozzle portion 170. In order to improve the coupling force of the top cap 180, steps (not numbered) and hooking steps (not numbered) may be provided on the inner surface of the top cap 180 and the outer surface of the outer container 120 and/or the outer case 160, etc., but this is merely exemplary, and various structures for attaching and detaching the top cap 180 may be employed.

In one embodiment, dual container 100 may further include a tube 190 in communication with pump portion 150 to aspirate the contents. A tube coupling portion 136 may also be formed on the neck cap 130 for coupling with the tube 190. The pipe coupling part 136 is extended toward the lower side of the pump receiving part 131 to communicate with the inside of the pump receiving part 131, and when the pipe 190 is coupled by insertion, the inlet of the cylinder 151 received inside the pump receiving part 131 and the pipe 190 communicate with each other, and the contents of the inner container 110 are sucked and transferred to the nozzle part 170 based on the pressurization of the nozzle part 170.

Fig. 5 and 6 show a use example of a dual container of one embodiment of the present invention.

More specifically, fig. 5 illustrates a process of assembling the dual container 100 after the inner container 110 is filled with initial contents, and fig. 6 illustrates a process of separating the inner container 110 after the contents are consumed.

Referring to fig. 5, the inner container 110 filled with initial contents is inserted into the open lower end of the outer container 120, thereby assembling the dual container 100.

Wherein the outer container 120, the neck cap 130, the pump assembly 140, 150, 160 and the nozzle portion 170 are combined with one another to form a first group. According to embodiments, the top cap 180 and/or the tube 190 may also be incorporated into the first group.

When the inner container 110 filled with the contents is inserted through the lower end of the open outer container 120, the neck cap 130 and at least a portion of the pump assembly 140, 150, 160 received thereby are inserted inside the inner container 110, and the neck portion 113 of the inner container 110 is inserted inside the first coupling portion 132 coupled to the neck cap 130, thereby accomplishing the assembly of the dual container 100.

Referring to fig. 6, when the contents of the inner container 110 are depleted, the pump assembly 140, 150, 160 and/or the outer container 120 are rotated in a first direction, thereby separating the inner container 110 and the neck cap 130.

For example, the pump assembly (in particular, the screw cap 140) and the neck cap 130 may be disengaged by rotating the outer housing 160 of the pump assembly 140, 150, 160 and/or the outer container 120 relative to the inner container 110 in a first direction. The inner container 110 is then removed through the open lower end of the outer container 120, and the third set of the inner container 110 and neck cap 130 combination is separated from the second set of the outer container 120, pump assemblies 140, 150, 160, and nozzle portion 170 combination.

Hereinafter, as described with reference to fig. 8, the second group is coupled again with the filling container storing the contents, thereby performing the content filling (refill) of the dual container 100.

Fig. 7 shows a filling container of one embodiment of the invention.

Referring to fig. 7, the filling container 200 may include a second inner container 210, a second neck cap 230, and a sealing cap 240, or may further include a tube 290 according to an embodiment.

Wherein the structure of the second inner container 210, the second neck cap 230 and the tube 290 may be the same as the structure of the inner container 110, the neck cap 130 and the tube 190 described with reference to fig. 1 to 6.

The sealing cap 240 is detachably coupled to the outside of the second neck cap 230, and functions to seal the second inner container 210. The inner face of the sealing cap 240 may form a fourth coupling portion 241 for screw-coupling with the second coupling portion 234 formed at the outer face of the second neck cap 230. For example, the fourth coupling portion 241 is formed in a thread form corresponding to the second coupling portion 234 of the second neck cap 230. An extension 242 may be formed on an inner upper portion of the sealing cap 240 to protrude downward. The extension 242 is inserted into the upper end of the pump receiving portion 231 of the second neck cap 230 to abut against the inner surface of the pump receiving portion 231 at least at one region.

The sealing cap 240 is integrally coupled to the neck 213 with the second neck cap 230 to seal the second inner container 210. For example, in a state where the sealing cap 240 is coupled to the outer surface of the second neck cap 230, the tube 290 and the second neck cap 230 are inserted into the inside of the second inner container 210 through the neck portion 213, and the neck portion 213 is inserted into and coupled with the first coupling portion 232 of the second neck cap 230, thereby sealing the second inner container 210.

Fig. 8 shows an example of use of the dual container of one embodiment of the present invention.

More specifically, fig. 8 illustrates a process of filling the contents by combining the filling container 200 of fig. 7 with the second group of the dual container 100. Wherein the second group may represent the structure in which the outer container 120, pump assemblies 140, 150, 160, and nozzle portion 170 are coupled to one another as described above.

First, referring to fig. 8 (a), the sealing cap 240 is rotated in the first direction and removed from the filling container 200 before the coupling of the filling container 200.

Then, referring to fig. 8 (b), the second inner container 210 combined with the second neck cap 230 is inserted into the inside of the outer container 120 through the open lower end of the outer container 120. Accordingly, the second inner container 210 is received into the interior of the outer container 120, and the pump portion 150 is received into the pump receiving portion 231 of the second neck cap 230 so as to be inserted into the inside of the second inner container 210.

Then, referring to fig. 8 (c), the pump assemblies 140, 150, and 160 and/or the outer container 120 are relatively rotated in the second direction with respect to the second inner container 210, thereby screw-coupling the second coupling portion 234 of the second neck cap 230 with the third coupling portion 141 of the screw cap 140.

Through this process, filling can be performed simply and hygienically after the contents are consumed.

Fig. 9 shows a dual container and a fill container of one embodiment of the present invention.

The dual container 300 and the filling container 400 of fig. 9 are shown as having a similar structure to the dual container 100 and the filling container 200 described with reference to fig. 1 to 8, wherein the difference of the two embodiments is described with emphasis.

Referring to fig. 9 (a), the dual container 300 may be configured such that the cylinder of the pump portion 340 is exposed through the open lower end of the neck cap 330 to directly communicate with the interior of the inner container 310.

Also, the interior of the inner container 310 of the dual container 300 may have a disk 315.

As the content stored in the inner container 310 is consumed, the disc 315 pushes the content upward, specifically, keeps in close contact with the inner wall of the inner container 310, and rises as the volume of the content in the inner container 310 decreases as the content is discharged.

In order to achieve smooth ascent of the disk 315, the lower end of the inner container 310 (particularly, the lower end of the cushion part) may be formed with a predetermined air inlet hole (not numbered). As the contents are discharged and the disc 315 rises, air enters the interior of the inner container 310 through the air inlet holes. As described above, the contents in the inner container 310 are stored in a state of being shut off from the outside air by the disk 315, and thus the pump portion 350 of the dual container 300 may be referred to as a vacuum pump (air pump) type.

Referring to fig. 9 (b), the filling container 400 includes a second neck cap 430 having the same structure as the neck cap 330, and a sealing cap 440 is screw-coupled to the outside of the second neck cap 430. The second inner container 410 storing the contents has the same structure as the inner container 310, and the second neck cap 430 combined with the sealing cap 440 is sealed by being integrally insert-combined to the neck portion of the second inner container 410. Further, on the inside of the second inner container 410, there is a circular disk 415, which is the same as the inner container 310, and the lower end thereof is formed with an air intake hole (not numbered).

As described above, the preferred embodiments are disclosed in the drawings and the specification. Although certain specific terms are employed herein, they are used in a descriptive sense only and not for purposes of limitation, nor is it intended to be used in a limiting sense, the scope of the invention being set forth in the claims. Accordingly, various modifications and other equivalent embodiments will be apparent to those skilled in the art, and may be made thereby. Therefore, the true technical scope of the present invention should be determined by the technical idea of the appended claims.