WO2019164065A1 - Double container - Google Patents

Abstract

A double container according to one embodiment of the present invention is provided. The container can comprise: a nozzle part for discharging contents through a discharge hole by pressing by a user; a pump assembly for discharging the contents according to the pressing of the nozzle part; an inner container including a first accommodation part in which the contents are accommodated, and a first edge part formed at the upper side of the first accommodation part such that at least a portion of the pump assembly is accommodated therein and mounted thereon; an outer container including a second accommodation part in which the inner container is accommodated, and a second edge part formed at the upper side of the second accommodation part; and a shoulder part detachably coupled to the second edge part of the outer container, and pressing the inner container according to the coupling, thereby fixing the inner container to be in close contact with the outer container.

Description

Double container

The present invention relates to a double container, and more particularly, to a double container that provides a firm and stable bond between the outer container and the inner container.

1 shows a conventional cosmetic container. Referring to FIG. 1A, a cosmetic container having an airless pump installed on the inlet side of the cosmetic container is shown. The cosmetic container may allow the contents contained in the container to be quantitatively discharged through the airless pump. When not in use, cosmetics can prevent air or foreign substances from entering the cosmetic containers from the outside to prevent the contents contained in the cosmetic containers from deteriorating and to allow the contents to be stored for a long time.

However, such a cosmetic container has a uniform structure and appearance, as shown, there was a problem that it is difficult to differentiate between products. In particular, even if the appearance of the container is to be changed, not only is the autonomy of the design relatively low, but, for example, when the container has a curved surface, this may cause more contents (eg, cosmetic solution, etc.) into the container. Problems have to be accommodated or the thickness of the container itself is too thick (especially in the case of injection molding).

In order to solve this problem, as shown in Figure 1 (b), a double container structure consisting of the outer container and the inner container has been proposed. Specifically, the cosmetic solution is accommodated through the inner container, but the final appearance of the container is formed through the outer container.

However, in such a double container structure, as shown in the figure, after the inner container is wrapped in the outer container, the inner container and the outer container are coupled by a method in which the inner container is pressurized by a lid. It was difficult to combine them, and in particular, when an external force was applied, the problem of frequent shaking or disposing of the container occurred.

Therefore, a technique for solving this problem is required.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a double container that provides a firm and stable coupling between the outer container and the inner container.

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

According to one embodiment of the invention, a double container is provided. The double container may include a nozzle unit for discharging contents through a discharge port by a user's pressure; A pump assembly for discharging the contents according to the pressurization of the nozzle unit; An inner container including a first receiving portion accommodating the contents and a first edge portion formed above the first receiving portion to accommodate and seat at least a portion of the pump assembly; An outer container including a second accommodating portion in which the inner container is accommodated and a second edge portion formed upwardly from the second accommodating portion; And a shoulder portion detachably coupled to the second edge portion of the outer container and pressurizing the inner container according to the coupling to closely fix the inner container to the outer container.

Preferably, the inner container is manufactured by injection molding or blow molding, and the outer container can be manufactured by blow molding.

Also, preferably, the first accommodating part may be implemented in a cylindrical shape, and the second accommodating part may be embodied in a curved surface in which sidewalls protrude outwards.

Also, preferably, the inner container may include a connection part extending outward from a lower end of the first edge portion to be connected to an upper end of the first accommodation portion having a wider cross section than the first edge portion; And a locking protrusion protruding outward from the connection portion.

In addition, preferably, the outer container is provided with a locking jaw protruding inward of the second rim portion, the locking projection of the inner container may be seated on the locking jaw.

Also, preferably, when the locking protrusion is seated on the locking jaw, the locking protrusion may be located below the upper end of the second edge portion.

Further, preferably, the shoulder portion is composed of a side wall coupled to the outside of the second edge portion of the outer container and an upper wall bent inward from the upper end of the side wall, the lower side of the upper wall the inner container At least one pressing protrusion for pressing may be formed.

In addition, preferably located on the upper side of the connecting portion, it may further include a soft buffer portion for transmitting the pressure by the shoulder portion to the inner container to securely fix the inner container to the outer container.

In addition, preferably, the connection portion is formed with at least one anti-rotation protrusion on the outside, the inner surface of the second rim portion of the outer container is formed with at least one anti-rotation groove that is engaged with the anti-rotation protrusion, the inner container Can prevent the rotation.

Further, preferably, at least one air groove for air communication of the second accommodating portion may be formed in at least one of the locking jaw of the outer container and the locking protrusion of the inner container.

Further, preferably, it may further include a dip tube in communication with the pump assembly inside the first receiving portion of the inner container.

In addition, preferably, an air inlet groove may be formed under the first accommodating part of the inner container, and a disk moving upwardly according to the discharge of the contents may be disposed inside the first accommodating part.

Also preferably, the pump assembly comprises: a cylinder having an inlet in communication with the interior of the first receiving portion; A piston provided on an inner wall of the cylinder; A sealing part coupled to an upper circumference of the cylinder to suppress a rise of the piston; A stem formed at one end of the inlet opening and closing by the piston and connected to the outlet of the nozzle unit; A shaft coupled to the stem and integrated with the stem and fitted inside the nozzle unit; And an elastic part that provides an elastic force in the direction of the nozzle part from the sealing part.

Further, preferably, the pump housing of the pump assembly may be coupled to the outside of the first rim, and the cylinder and the piston of the pump assembly may be accommodated to the inside of the first rim.

According to the present invention, by constructing a double container structure consisting of the inner container and the outer container, by manufacturing the outer container by blow molding, a different design and a sense of volume, a curved surface that was not seen in the container produced by conventional injection molding Aesthetics by can be provided. In particular, despite the rich volume, it is possible to reduce the thickness of the container through blow molding, thereby lowering the manufacturing cost and the difficulty of the process.

Further, according to the present invention, when the inner container is accommodated in the outer container, the locking projection of the inner container is caught by the locking jaw of the outer container, thereby limiting the receiving depth of the inner container, the inner container is stably coupled to the outer container You can do that. In addition to this primary coupling, by performing a secondary coupling between the inner container and the outer container through the shoulder portion, a more rigid double bond structure can be provided.

Further, according to the present invention, even if the inner container is seated on the outer container, the configuration for connection between the outer container and the inner container is not exposed to the outside of the outer container, it is possible to reduce the interference of the inner container by the outer configuration. Accordingly, the shoulder portion providing the secondary coupling can be implemented with a simple structure without having to maintain the complicated structure of the multi-stage, so that the size can be considerably reduced, and in particular, the inner and outer containers are smoothly connected through the shoulder to blow The soft and convex aesthetics of the outer container produced by molding can be utilized.

In addition, according to the present invention, by forming an air groove for air communication in the outer container and / or the inner container, the inner container shrinks in accordance with the discharge of the contents, or the disk in the inner container to move smoothly to the top, The contents can be used up without malfunction.

In addition, according to the present invention, it can be implemented in various types such as an airless type, a deep tube type, and the like, only by changing some components, but can be utilized in various product groups.

BRIEF DESCRIPTION OF THE DRAWINGS In order to better understand the drawings cited in the detailed description of the invention, a brief description of each drawing is provided.

1 shows a conventional container.

2 shows a cross-sectional view of a double vessel according to an embodiment of the invention.

Figure 3 shows an exploded cross-sectional view of a double vessel according to an embodiment of the present invention.

4 shows an enlarged cross-sectional view of a portion of a dual container according to an embodiment of the present invention.

5 shows an enlarged cross-sectional view of a portion of a dual container according to an embodiment of the present invention.

6 illustrates an outer container and an inner container of a double container according to an embodiment of the present invention.

7 illustrates a dual container according to one embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described with reference to the accompanying drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the embodiments of the present invention, if it is determined that the detailed description of the related well-known configuration or function interferes with the understanding of the embodiments of the present invention, the detailed description thereof will be omitted. In addition, embodiments of the present invention will be described below, but the technical spirit of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art. On the other hand, for convenience described below, the direction of the top, bottom, left and right is based on the drawings, the scope of the present invention is not necessarily limited to the direction.

Throughout the specification, when a part is "connected" to another part, this includes not only "directly connected" but also "indirectly connected" with another element in between. . Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms.

Figure 2 shows a cross-sectional view of a double container according to an embodiment of the present invention, Figure 3 shows an exploded cross-sectional view of a double container according to an embodiment of the present invention, Figures 4 and 5 an embodiment of the present invention An enlarged cross sectional view of a portion of a double container according to an example is shown.

2 to 5, the dual container 200 according to the exemplary embodiment of the present invention includes a nozzle unit 210, an inner container 220, an outer container 230, a shoulder unit 240, and a buffer unit. 250, cap 260, and pump assembly 270.

The nozzle unit 210 receives the external force of the user and transmits the external force to the pump assembly 270, and discharges the contents discharged from the pump assembly 270 to the outside. Specifically, the nozzle tip receives the external force of the user. The nozzle tip may include a passage formed in the nozzle tip and a discharge port through which the contents are communicated with the pump assembly 270 and the contents. At this time, the contents discharged to the outside is a fluid stored in the inner container 220, but may be a quasi-drugs such as cosmetics, medicines, toothpaste, etc., but may include all kinds of materials that can be discharged by pumping.

The container parts 220 and 230 may form a double container 200 structure of the inner container 220 and the outer container 230. The inner container 220 may store contents, and deliver the contents to the outside in cooperation with the pump assembly 270, and the outer container 230 may receive the inner container 220 inside.

In the present invention, the inner container 220 may be manufactured by injection molding or blow molding, and the outer container 230 may be manufactured by blow molding. Here, blow molding is preformed into a tube by extrusion or injection, it is inserted into a mold, blown air into the inside to swell, cooled and solidified to form a solid of a specific shape. In the present invention, the outer container 230 ) By blow molding, it is possible to provide a different design, volume, and aesthetics due to the curved surface that are not seen in the container manufactured by the conventional injection molding. In particular, as compared with the case of the outer container 230 by injection molding, the autonomy of the design is high, and despite the rich volume, the thickness of the container can be reduced, not only can lower the manufacturing cost, but also the existing uniform The user satisfaction can be improved by providing a different aesthetic by breaking away from the externalized appearance.

The inner container 220 may include a first receiving portion 221 and a first edge portion 222. The first accommodating part 221 forms an accommodating space in which the contents are accommodated. As shown in the drawing, the first accommodating part 221 may have a long cylindrical shape, but is not limited thereto. Also, an upper end of the first receptacle 221 may be opened for contents communication with the pump assembly 270. The first edge portion 222 extends upward from the upper end of the first accommodating part 221 and may have a narrower inner diameter than the first accommodating part 221. The upper end of the first edge portion 222 is open, it may be sealed while the pump assembly 270 is coupled. At this time, the outer side of the first rim 222 is coupled to the inside of the pump housing 277 of the pump assembly 270, the cylinder 271 of the pump assembly 270 and the inside of the first rim 222 and Piston 272 or the like can be housed.

In addition, the inner container 220 extends outward from the lower end of the first edge portion 222 and is connected to an upper end of the first receiving portion 221 having a larger cross section than the first edge portion 222. And a locking protrusion 224 protruding outward from the connection portion 223. The connection portion 223 and the locking protrusion 224 may more stably seat the inner container 220 in the outer container 230, as will be described in more detail below.

In addition, the inner container 220 may further include a disk 225 which is disposed inside the first accommodating part 221 and moves upward according to the discharge of the contents. The disk 225 pushes the contents upward as the contents stored in the first accommodating part 221 are exhausted. Specifically, the disk 225 maintains the state in which the disk 225 is in close contact with the inner wall of the first accommodating part 221 and the contents are discharged. As a result, when the volume of the content in the first accommodating part 221 is reduced, the content may rise correspondingly.

A predetermined air inlet hole may be formed at the lower end of the first accommodating part 221 in order to smoothly lift the disk 225. When the disc 225 is raised as much as the contents are discharged, air is introduced into the first accommodating part 221 through the air inlet hole. As described above, since the contents are stored in the state of being blocked by the disk 225 in the first accommodating part 221, the pump assembly 270 of the present invention may be referred to as an airless pump type.

The outer container 230, like the inner container 220, may include a second receiving portion 231 and a second edge portion 232. The second accommodating part 231 may form an accommodating space in which the inner container 220 is accommodated, and may have a volume feeling due to bending as compared with the first accommodating part 221. That is, the inner container 220 (particularly, the first container 231 of the inner container 220) is cylindrical, whereas the outer container 230 is formed on the sidewall 241 of the second container 231. A convex curved surface may be formed to the outside, thereby providing a rich volume without being limited to the type or quantity of contents to be accommodated and the shape of the first accommodating portion 221. However, the shape of the outer container 230 is not limited thereto.

An upper end of the second accommodating part 231 may be opened to accommodate the inner container 220, and a second edge part 232 may be extended upward from the opened upper end. The second edge portion 232, the shoulder portion 240 may be coupled to the outside, the locking jaw 233 protrudes to the inside, the inner container 220 may be seated. That is, when the inner container 220 is accommodated in the outer container 230, the catching protrusion 224 of the inner container 220 is caught by the catching jaw 233 of the outer container 230, whereby the inner container 220 is provided. The receiving depth of the may be limited, and the inner container 220 may be coupled to the outer container 230 stably. To this end, the locking jaw 233 and the locking projection 224 may have a shape and a protruding length that can be engaged with each other.

Although not shown in FIGS. 2 to 4, an inclined surface is formed in the second edge portion 232 between the vertical inner wall and the locking jaw 233, and likewise, the locking protrusion 224 of the inner container 220 is connected thereto. By having a corresponding shape, the contact area between the inner container 220 and the outer container 230 can be increased, and the inner container 220 and the outer container 230 can be more stably coupled.

On the other hand, the locking projection 224 and the connecting portion 223 of the inner container 220 may be located below the upper end of the second edge portion 232 of the outer container (230). That is, even when the inner container 220 is seated on the outer container 230, the connecting portion 223 and the locking protrusion 224 are not positioned above the second edge portion 232 (that is, the connecting portion 223 and By having the locking protrusion 224 positioned inside the second rim portion 232), a configuration such as the locking protrusion 224 and the locking jaw 233 for connecting the outer container 230 and the inner container 220 may be performed. The outer container 230 may be prevented from being exposed to the outside. This may reduce the interference of the inner container 220 by the external configuration or external force. In particular, in the case of the prior art in which the inner container extends to the edge portion of the outer container (see FIG. 1B), the arrangement position, posture, and the like of the inner container are easily changed by the external force. For example, even if an external force acts laterally, the second edge portion 232 and the locking jaw 233 may stably support the connection portion 223 and the locking protrusion 224 of the inner container 220.

In addition, although not shown in FIGS. 2 to 5, according to an embodiment, at least one anti-rotation protrusion is formed in the connecting portion 223 of the inner container 220 in a lateral direction, and a second edge of the outer container 230 is provided. At least one rotation preventing groove that is engaged with the rotation preventing protrusion is formed on the inner surface of the part 232, thereby preventing rotation of the inner container 220. However, this is only an example, and various configurations for preventing rotation may be applied between the inner container 220 and the outer container 230 according to an embodiment. For example, the anti-rotation groove is formed in the connecting portion 223 of the inner container 220, and the anti-rotation protrusion is formed on the inner surface of the second edge portion 232 of the outer container 230 to engage the anti-rotation groove. It may be.

The shoulder portion 240 is for more stably coupling the outer container 230 and the inner container 220, and specifically, detachably couples to the second edge portion 232 of the outer container 230, According to this combination, the inner container 220 may be pressurized to fix the inner container 220 to the outer container 230. That is, in the present invention, when the inner container 220 is seated on the outer container 230, the inner container 220 is the primary through the locking projection 224 of the inner container 220 and the locking jaw 233 of the outer container 230. By performing the coupling, and then, by performing a secondary coupling between the inner container 220 and the outer container 230 through the shoulder portion 240, it is possible to provide a more robust double bond structure.

To this end, the shoulder part 240 includes a side wall 241 coupled to the outside of the second edge portion 232 of the outer container 230 and an upper wall 242 bent inward from the upper end of the side wall 241. At least one pressing protrusion 243 may be formed below the upper wall 242 to pressurize the inner container 220 downward. That is, the shoulder part 240 may be coupled to the outer container 230 through the side wall 241. According to the coupling, the pressing protrusion 243 may move downward to pressurize the inner container 220 downward. The inner container 220 may be in close contact with the outer container 230. According to the embodiment, the shoulder portion 240 may be coupled in various ways, such as screwing, fitting engagement with the second edge portion 232 of the outer container 230, for this purpose and the inner wall of the shoulder portion 240 The outer wall of the second edge portion 232 may have a suitable configuration, such as protrusions, threads.

In addition, as described above, the locking protrusion 224 and the connecting portion 223 of the inner container 220 may be located below the upper end of the second edge portion 232 of the outer container 230. Therefore, the shoulder portion 240 is not required to maintain the complicated structure of the multi-stage bending, the outer container 230 and the inner container 220 only with a simple structure of the side wall 241 and the upper wall 242 is formed from the side wall 241 Can cover. In particular, in that the locking projection 224 and the connecting portion 223 of the inner container 220 is located below, the shoulder portion 240 is of a degree corresponding to the second edge portion 232 of the outer container 230. It can have a height, and thus can be significantly reduced in size compared to the conventional coupling member, in particular, the inner container 220 and the outer container 230 is smoothly connected through the shoulder portion 240 to be manufactured by blow molding It can make use of the soft and convex aesthetics of the outer container 230.

The shock absorbing portion 250 is disposed between the shoulder portion 240 and the inner container 220, so as to transmit the pressure of the shoulder portion 240 to the inner container 220. As described above, since the shoulder portion 240 presses the inner container 220 downward in accordance with the engagement with the outer container 230, the inner portion according to the coupling state or degree of the shoulder portion 240 and the outer container 230 is internal. It may be difficult to properly pressurize the vessel 220. For example, even though the coupling between the shoulder portion 240 and the outer container 230 is completed, the pressing protrusion of the shoulder portion 240 does not touch the connecting portion 223, or the shoulder portion 240 and the outer container 230 Before the coupling is completed, the pressing protrusion of the shoulder portion 240 may reach the connecting portion 223, so that the coupling between the shoulder portion 240 and the outer container 230 may be weak. In order to solve this problem, the shock absorbing part 250 is positioned above the connecting part 223 of the inner container 220 and below the pressing protrusion 243 of the shoulder part 240, and is composed of soft rubber or silicone. When the excessive pressure is applied by the pressing protrusion 243 while substantially extending the length of the pressing protrusion 243 toward the connecting portion 223, the inner container 220 is reduced to an appropriate level by the outer container ( 230).

The cap portion 260 may cover the nozzle portion 210 to prevent an unintended external force on the nozzle portion 210 and to protect the nozzle portion 210 from contamination. The cap 260 may be detachably coupled to the outer surface of the pump assembly 270, and may be separated therefrom. Cap portion 260 may be formed in a cylindrical shape having a predetermined height to cover the nozzle portion 210, when the cap portion 260 is coupled to the outer surface of the pump assembly 270, the outer surface of the cap portion 260 The outer surface of the shoulder portion 240 may be naturally and smoothly connected. In order to improve the coupling force of the cap portion 260, the inner surface of the cap portion 260 and / or the outer surface of the pump assembly 270 may be provided with a stepped jaw (not shown) and a locking jaw (not shown), This is just an example, in addition to the structure used for the detachment of the cap portion 260 may be applied in various ways.

The pump assembly 270 may seal the inner container 220 by at least a portion thereof being received in the inner container 220 (especially the first rim 222) and seated in the first rim 222. . Thereafter, the contents contained in the inner container 220 may be transferred to the nozzle unit 210 according to the pressure of the nozzle unit 210.

Specifically, the pump assembly 270 includes a cylinder 271 having an inlet communicating with the interior of the first receiving portion 221, a piston 272 provided on the inner walls of the cylinder 271, and a cylinder 271. Sealing portion 273 coupled to the upper periphery to suppress the rise of the piston 272, the inlet opening and closing is formed at one end by the piston 272, the stem 274 is connected to the outlet of the nozzle portion 210, the stem The shaft 275 coupled to the lifting unit 274 integrally and fitted inside the nozzle unit 210, the elastic unit 276 providing elastic force in the direction of the nozzle unit 210 from the sealing unit 273, and the above components. It may include a pump housing 277 to receive and protect.

The cylinder 271 may have an inlet coupled with the opening of the inner container 220 and in communication with the inside of the inner container 220. Specifically, the inner container 220 is accommodated in the first rim 222, the upper end of the cylinder 271 is formed with a wing portion to the outside, it can be seated on the first rim 222. In this case, a soft sealing member is provided between the first edge 222 and the wing to prevent the contents of the inner container 220 from leaking to the outside, and the cylinder 271 is firmer to the inner container 220. Can be combined. The inlet of the cylinder 271 may be formed at the bottom center toward the inside of the inner container 220, and may be provided with a valve. The valve is a non-return valve, and when the internal pressure of the cylinder 271 is positive, the inlet is closed. When the internal pressure of the cylinder 271 changes to negative pressure, the valve can be lifted upward and open.

The piston 272 is provided on the inner wall of the cylinder 271. The piston 272 may be provided in a state to maintain a constant position on the inner wall of the cylinder 271 by the friction force, so if there is no external force, the piston 272 can move up and down with the cylinder 271. The piston 272 may be configured to have a H-shaped cross section, and the outer surface may be implemented to sufficiently secure the frictional force by contacting at least two or more points with the inner wall of the cylinder 271. In addition, the piston 272 may have an inner surface in contact with the stem 274, provided that the piston 272 has a greater friction force acting on the outer surface of the piston 272 than a friction force acting on the inner surface of the piston 272. ) May be determined. The piston 272 can open and close the inlet formed in the stem 274. Specifically, the lower end of the inner surface of the piston 272 may be in close contact with the supporting portion of the stem 274 to seal the inlet. When the piston 272 is raised based on the stem 274, the lower inner surface of the piston 272 is raised. And an opening between the stem and the base of the stem 274 may communicate with the interior of the cylinder 271.

The sealing portion 273 is coupled to the circumference of the upper end of the cylinder 271, and is configured such that the lower end extends inwardly of the cylinder 271 to suppress the rise of the piston 272. A gap may be formed between the inner surface of the sealing unit 273 and the shaft 275 to be described later to allow the movement of the sealing unit 273 based on the shaft 275. Of course, in this case, in order to prevent the fluid from leaking between the sealing portion 273 and the shaft 275, a separate member for sealing may be provided.

The stem 274 has an inlet which is opened and closed by a piston 272 on the lower outer surface thereof and is connected to the outlet of the nozzle portion 210. The stem 274 is surrounded by the inner surface of the piston 272, the upper side may be connected to the inside of the nozzle portion 210 through the shaft 275, and may move relatively in the vertical direction, such as the cylinder 271 and the like. . Stem 274 may be provided with a support at the bottom. The base may have a truncated conical shape, and when the bottom of the inner surface of the piston 272 is in close contact with the base, the inlet may be isolated from the inner space of the cylinder 271. On the other hand, when the piston 272 is raised relative to the support portion, the lower end of the inner surface of the piston 272 is spaced apart from the support portion to open the inlet can communicate with the internal space of the cylinder 271, the fluid inside the cylinder 271 The system can be introduced into the system 274.

The stem 274 has a hollow tubular shape, the lower side communicating with the inlet and the upper side communicating with the outlet through the interior of the shaft 275. Accordingly, the contents may be introduced into the stem 274 through the inlet opening opened by the piston 272 and then discharged through the nozzle portion 210 via the shaft 275.

The shaft 275 may have a lower end integrally coupled with the stem 274 and an upper end coupled to the lower end of the nozzle unit 210. Meanwhile, in the present specification, the shaft 275 and the stem 274 are described in separate configurations, but the shaft 275 and the stem 274 may be provided in one configuration in which the shaft 275 and the stem 274 are integrally manufactured. At the upper end of the shaft 275, a wing portion may protrude along the outer circumferential surface.

The elastic part 276 may be provided between the shaft 275 and the sealing part 273. Specifically, the elastic part 276 may be in close contact with the lower surface of the wing of the shaft 275, the lower end may be in close contact with the upper surface of the sealing portion 273, and may apply an elastic force to the shaft 275 in an upward direction. That is, when the user presses the nozzle unit 210 so that the nozzle unit 210, the shaft 275, and the like move downward, the elastic unit 276 may give an elastic force to reposition these components again. have. The elastic part 276 may be configured of, for example, a spring, but is not limited thereto. In accordance with an embodiment to which the present invention is applied, various elastic materials may be used.

The pump housing 277 may receive the above components of the pump assembly 270 therein and protect it from the outside. The pump housing 277 may be coupled to the inner container 220 while the groove of the inner wall is engaged with the protrusion of the first edge portion 222 of the inner container 220. In addition, the pressurizing portion projecting inwardly from the inner wall of the pump housing 277 at the time of this coupling downward pressure on the wing of the cylinder 271 is disposed on the upper end of the first rim 222 of the inner container 220 pump assembly 270 ) May be more securely coupled to the inner container 220 and at the same time more tightly sealed between the inner container 220 and the pump assembly 270.

6 illustrates an outer container and an inner container of a double container according to an embodiment of the present invention. Specifically, FIG. 6A shows a perspective view of the outer container, and FIG. 6B shows a bottom perspective view of the inner container.

Referring to FIG. 6A, at least one air groove 234 may be formed in the locking jaw 233 of the outer container 230 ′. The air groove 234 is for air communication between the accommodating space of the second accommodating portion 231 and the inside of the second edge portion 232, and the inner vessel 220 ′ of the double vessel 200 of the present invention is an airless type. When implemented as such, it is possible to facilitate the contraction of the first receiving portion 221 or the upper movement of the disk 225 in accordance with the discharge of the contents, it is possible to exhaust the contents without any malfunction of the pump.

In addition, as shown in (b) of FIG. 6, at least one air groove 226 is provided in the locking protrusion 224 of the inner container 220 ′, similarly to the locking jaw 233 of the outer container 230 ′. Can be formed.

The shape or configuration of the air grooves 226 and 234 may vary depending on the embodiment to which the present invention is applied. For example, air grooves 226 and 234 may not be formed in one of the locking jaws 233 of the outer container 230 ′ and the locking protrusion 224 of the inner container 220 ′. Also, for example, the air grooves 234 of the outer container 230 'and the air grooves 226 of the inner container 220' may be disposed at positions corresponding to each other or to be staggered with each other.

7 illustrates a dual container according to one embodiment of the present invention.

Unlike the dual container 200 of FIGS. 2 to 5 implemented as an airless type, the dual container 200 ′ of FIG. 7 may be implemented as a deep tube type.

Specifically, the double vessel 200 ′ may include a dip tube 229 in communication with the pump assembly 270 inside the first receptacle 221 of the inner vessel 220 ″. The contents stored in the first accommodating part 221 may be discharged to the outside through the pump assembly 270 and the nozzle part 210 via the dip tube 229.

Accordingly, the double container 200 ′ does not include the disk 225 as compared to the double container 200 of FIGS. 2 to 5, and no air inlet is formed in the lower end of the first accommodating part 221.

Although not shown in FIG. 7, according to an embodiment, even in a double tube 200 ′ of a dip tube type, as mentioned in FIG. 6, the locking jaw 233 and / or the inner container 220 of the outer container 230 may be used. At least one air groove may be formed in the locking protrusion 224 of ''), and the shape or configuration thereof may vary.

As described above, optimal embodiments have been disclosed in the drawings and the specification. Although specific terms have been used herein, they are used only for the purpose of describing the present invention and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from this. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (14)

As a double container, A nozzle unit for discharging the contents through the discharge port by the user's pressing; A pump assembly for discharging the contents according to the pressurization of the nozzle unit; An inner container including a first receiving portion accommodating the contents and a first edge portion formed above the first receiving portion to accommodate and seat at least a portion of the pump assembly; An outer container including a second accommodating portion in which the inner container is accommodated and a second edge portion formed upwardly from the second accommodating portion; And A shoulder portion detachably coupled to the second edge portion of the outer container and pressurizing the inner container according to the coupling to tightly fix the inner container to the outer container; Containing, double container. The method of claim 1, Wherein the inner container is manufactured by injection molding or blow molding and the outer container is manufactured by blow molding. The method of claim 2, And the first receptacle is implemented in a cylindrical shape, and the second receptacle is embodied in a curved surface in which sidewalls protrude outwards. The method of claim 1, The inner container may include a connection part extending outward from a lower end of the first edge portion and connected to an upper end of the first accommodation portion having a wider cross section than the first edge portion; And a catching protrusion projecting outwardly from the connecting portion. The method of claim 4, wherein The outer container is provided with a locking jaw protruding inwardly of the second rim, the locking projection of the inner container is seated on the locking jaw. The method of claim 5, When the locking projection is seated on the locking jaw, the locking projection is located below the upper end of the second rim portion, double container. The method of claim 1, The shoulder part includes a side wall coupled to the outside of the second edge portion of the outer container and an upper wall bent inward from an upper end of the side wall, and at least one pressurization to pressurize the inner container downward to the lower side of the upper wall. Double container, with protrusions formed. The method of claim 4, wherein Located in the upper side of the connecting portion, further comprising a soft buffer for transmitting the pressure by the shoulder portion to the inner container to securely fix the inner container to the outer container, double container The method of claim 4, wherein The connection portion is formed with at least one anti-rotation protrusion on the outside, the inner surface of the second rim portion of the outer container is formed with at least one anti-rotation groove that is engaged with the anti-rotation protrusion, to prevent the rotation of the inner container, Double container The method of claim 5, Wherein at least one of the locking jaw of the outer container and the locking projection of the inner container has at least one air groove for air communication with the second receptacle The method of claim 1, And a dip tube in communication with the pump assembly inside the first receptacle of the inner container. The method of claim 1, An air inlet groove is formed under the first accommodating part of the inner container, and a disc moving upwardly is disposed inside the first accommodating part according to the discharge of the contents. The method of claim 1, The pump assembly includes a cylinder having an inlet in communication with the interior of the first receiving portion; A piston provided on an inner wall of the cylinder; A sealing part coupled to an upper circumference of the cylinder to suppress a rise of the piston; A stem formed at one end of the inlet opening and closing by the piston and connected to the outlet of the nozzle unit; A shaft coupled to the stem and integrated with the stem and fitted inside the nozzle unit; And an elastic portion for providing an elastic force in the direction of the nozzle portion from the sealing portion. The method of claim 12, Wherein the pump housing of the pump assembly engages outside of the first rim and the cylinder and the piston of the pump assembly are received inside of the first rim.

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