CN111712329A

CN111712329A - Dual container

Info

Publication number: CN111712329A
Application number: CN201880089191.XA
Authority: CN
Inventors: 孙受辰
Original assignee: Yonwoo Co Ltd
Current assignee: Yonwoo Co Ltd
Priority date: 2018-02-22
Filing date: 2018-05-23
Publication date: 2020-09-25
Anticipated expiration: 2038-05-23
Also published as: WO2019164065A1; CN111712329B; KR101900419B1

Abstract

One embodiment of the present invention provides a dual container. The container includes: a nozzle part for discharging the content through the discharge port by the pressurization of the user; a pump assembly for discharging the contents in accordance with the pressurization of the nozzle portion; an inner container including a first housing part for housing the contents and a first edge part formed to an upper side of the first housing part for housing and mounting at least a part of the pump assembly; an outer container including a second receiving portion for receiving the inner container and a second edge portion formed upward from the second receiving portion; and a support portion detachably coupled to the second edge portion of the outer container, and configured to pressurize the inner container and tightly fix the inner container to the outer container according to the coupling.

Description

Dual container

Technical Field

The present invention relates to a dual container, and more particularly, to a dual container that provides a strong and stable bond between an outer container and an inner container.

Background

Fig. 1 shows a conventional cosmetic container. In the case of referring to fig. 1(a), a cosmetic container is shown in which an air pump (air pump) is provided on the injection port side of the cosmetic container. The cosmetic container discharges the content in a fixed amount by an air pump, and prevents the content in the cosmetic container from being deteriorated by cutting off the inflow of air, foreign substances, or the like from the outside to the cosmetic container when the cosmetic is not used, and the content can be stored for a long time.

However, the cosmetic container has a uniform structure and appearance as shown in the drawing, and there is a problem that it is difficult to differentiate products. In particular, even if the outer shape of the container is changed, the discretion of the designer is relatively low, for example, in the case where the container has a curved surface, whereby an excessive content (e.g., a cosmetic solution or the like) is contained in the container, or a problem arises in that the thickness of the container itself is too thick (in particular, in the case of injection molding).

To solve this problem, as shown in fig. 1(b), a double container structure composed of an outer container and an inner container is disclosed. In particular, the cosmetic solution is contained by the inner container, and the final appearance of the container is formed by the outer container.

However, in the double container structure as described above, as shown in the drawing, the inner container is hung from the outer container and then the inner container and the outer container are coupled by a pressure coupling method using a lid, but in this method, it is difficult to tightly couple the inner container and the outer container, and in particular, when an external force acts, there frequently occurs a problem that the inner container is shaken or the arrangement thereof is loosened.

Therefore, a technique for solving this problem is required.

Disclosure of Invention

Technical problem

The present invention has been developed to solve the above problems, and an object thereof is to provide a dual container that provides a strong and stable coupling between an outer container and an inner container.

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

Means for solving the problems

According to an embodiment of the present invention, a dual container is provided. The dual container includes: a nozzle part for discharging the content through the discharge port by the pressurization of the user; a pump assembly for discharging the contents in accordance with the pressurization of the nozzle portion; an inner container including a first housing part for housing the contents and a first edge part formed to an upper side of the first housing part for housing and mounting at least a part of the pump assembly; an outer container including a second receiving portion for receiving the inner container and a second edge portion formed upward from the second receiving portion; and a support portion detachably coupled to the second edge portion of the outer container, and configured to pressurize the inner container and tightly fix the inner container to the outer container according to the coupling.

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

Further, it is preferable that the first receiving portion is formed in a cylindrical shape, and the second receiving portion is formed by a curved surface of which a side wall protrudes outward.

Also, preferably, the inner container further includes: a connecting portion extending outward from a lower end of the first edge portion and connected to an upper end of the first accommodating portion having a wider cross-section than the first edge portion; and a hanging and clamping projection projecting outwards from the connecting part.

Preferably, a locking portion protruding inward of the second edge portion is formed on the outer container, and the locking protrusion of the inner container is attached to the locking portion.

Further, it is preferable that the catching projection is located at a lower side than an upper end of the second edge portion when the catching projection is attached to the card table.

Preferably, the support portion includes a side wall coupled to an outer side of the second rim portion of the outer container and an upper wall bent inward from an upper end of the side wall, and at least one pressing protrusion for pressing a lower portion of the inner container is formed on a lower side of the upper wall.

Further, preferably, the method further comprises: and a soft buffer part which is located above the connection part and transmits the pressure generated by the support part to the inner container so as to closely fix the inner container to the outer container.

Preferably, at least one rotation preventing protrusion is formed at the connecting portion to an outside, and at least one rotation preventing recess engaged with the rotation preventing protrusion is formed at an inner surface of the second rim portion of the outer container to prevent the inner container from rotating.

Further, it is preferable that at least one air groove for communicating air of the second receiving portion is formed in at least one of the catch table of the outer container and the catch projection of the inner container.

Further, preferably, the method further comprises: a deep tube communicating with the pump assembly inside the first receiving portion of the inner container.

Further, it is preferable that an air inflow groove is formed at a lower side of the first receiving portion of the inner container, and a tray moving to an upper side according to discharge of the contents is disposed inside the first receiving portion.

Further, preferably, the pump assembly includes: a cylinder having an inlet communicating with an inside of the first receiving portion; the piston is arranged on the inner wall of the cylinder body; a sealing part combined with the upper end edge of the cylinder to restrain the rising of the piston; a stem having an inlet opened and closed by the piston formed at one end thereof and connected to a discharge port of the nozzle; a bearing coupled to the stem so as to be integrally lifted and lowered, and inserted into the nozzle; and an elastic portion for providing an elastic force from the sealing portion toward the nozzle portion.

Preferably, the pump housing of the pump assembly is coupled to the outside of the first edge, and the cylinder and the piston of the pump assembly are accommodated inside the first edge.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, a double container structure comprising an inner container and an outer container is formed, and the outer container is manufactured by blow molding, thereby providing an aesthetic feeling due to an unusual design, a layered feeling, and a curved surface which have not been observed in a conventional container manufactured by injection molding. In particular, the thickness of the container is reduced by blow molding in addition to providing a rich sense of layering, thereby reducing the manufacturing cost and the ease of the process.

Further, according to the present invention, when the inner container is received in the inner and outer containers, the engaging protrusion of the inner container is engaged with the engaging table of the outer container to limit the receiving depth of the inner container, so that the inner container is stably coupled to the outer container. The second bonding between the inner container and the outer container is performed through the support part in addition to the first bonding as shown above, providing a stronger double bonding structure.

Also, according to the present invention, even if the inner container is mounted to the outer container, the structure for connection between the outer container and the inner container is not exposed to the outside of the outer container, thereby reducing interference of the inner container of the outer structure. Thus, providing the second-combined supporting part is achieved only by a simple structure without maintaining a complicated structure of the other end, thereby being extremely downsized, and particularly, the inner container and the outer container are slidably coupled by the supporting part, thereby inducing a soft and prominent aesthetic sense of the outer container manufactured by blow molding.

Further, according to the present invention, the air groove for communicating air is formed in the outer container and/or the inner container, and the inner container is contracted according to the discharge of the contents, or the tray in the inner container is smoothly moved upward, and the contents are completely consumed without a malfunction of the water pump.

Further, according to the present invention, although only a part of the structure is changed, the present invention can be implemented by various methods such as an airless (air) type and a deep tube (deep) type, and can be applied to various product groups.

Drawings

Brief description of the several views of the drawings the accompanying figures, which are referenced in the detailed description of the invention, are provided for a more complete understanding of the invention.

Fig. 1 is a drawing showing a conventional container.

FIG. 2 is a cross-sectional view of a dual container showing one embodiment of the present invention;

FIG. 3 is an exploded cross-sectional view of a dual container showing one embodiment of the present invention;

FIG. 4 is an enlarged cross-sectional view showing a portion of a dual container according to an embodiment of the present invention;

FIG. 5 is an enlarged cross-sectional view showing a portion of a dual container according to an embodiment of the present invention;

FIG. 6 is a drawing showing the outer container and the inner container of the dual container of one embodiment of the present invention;

fig. 7 is a drawing showing a dual container of an embodiment of the present invention.

Detailed Description

Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numerals are attached to components in the respective drawings, and it should be noted that the same components are denoted by the same reference numerals as much as possible even when they are displayed in different drawings. In describing the embodiments of the present invention, when it is judged that the detailed description of the related known structure or function interferes with the understanding of the embodiments of the present invention, the detailed description is omitted. The present invention is not limited to the embodiments described above, and various modifications and variations can be made by those skilled in the art. The vertical and horizontal directions described below are set based on the drawings for convenience, and are not intended to limit the scope of the claims of the present invention by the corresponding directions.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes a case of being "directly connected" and also includes a case of being "indirectly connected" with another element interposed therebetween. In the present invention, the term "includes" or "including" a part of a constituent element in the entire specification includes not only the other constituent element but also other constituent element except for the case where there is no specific exclusive description. In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), and the like are used. The term is used to distinguish the component from other components, and the term does not limit the nature, order, or sequence of the components.

Fig. 2 is a sectional view showing a dual container according to an embodiment of the present invention, fig. 3 is an exploded sectional view showing the dual container according to the embodiment of the present invention, and fig. 4 and 5 are enlarged sectional views showing a part of the dual container according to the embodiment of the present invention.

Referring to fig. 2 to 5, a dual container 200 according to an embodiment of the present invention includes: a nozzle part 210, an inner container 220, an outer container 230, a support part 240, a buffer part 250, a cover part 260, and a pump assembly 270.

The nozzle part 210 receives the applied external force of the user and transmits the external force to the pump assembly 270, and discharges the contents discharged from the water pump assembly 270 to the outside, and specifically, includes a nozzle welding nozzle receiving the applied external force of the user, a flow path formed inside the nozzle welding nozzle and communicating the pump assembly 270 and the contents, and a discharge port discharging the contents from the flow path to the outside. At this time, the contents discharged to the outside are the fluid stored in the inner container 220, and include cosmetics, medicines, medical supplies such as toothpaste, and the like, and include all kinds of substances discharged by suction.

The

container parts

220 and 230 constitute a double container 200 structure of an inner container 220 and an outer container 230. The inner container 220 stores contents, transfers the contents to the outside in conjunction with the pump assembly 270, and the outer container 230 receives the inner container 220 to the inside.

In the present invention, the inner container 220 is manufactured by injection molding or blow molding (blow molding), and the outer container 230 is manufactured by blow molding. Here, the blow molding means that a pipe is prepared by extrusion or injection molding, and a solid object of a specific form is manufactured by inserting the pipe into a mold, and blowing air into the inside to expand, cool and solidify the pipe. In particular, compared to the case where the outer container 230 is injection molded, design autonomy is high, the thickness of the container can be reduced even for a rich sense of layering, thereby reducing manufacturing costs, and the conventional uniform outer shape is removed to provide a unique aesthetic feeling, thereby improving user satisfaction.

The inner container 220 includes a first receiving portion 221 and a first edge portion 222. The first receiving portion 221 forms a receiving space for receiving contents, and has a long cylindrical shape as shown in the drawing, but is not limited thereto. And, an upper end of the first receiving part 221 is opened for communication with the contents of the pump assembly 270. The first edge 222 is formed by extending the upper end of the first receiving portion 221 upward, and has a smaller inner diameter than the first receiving portion 221. The upper end of the first edge 222 is open and is sealed by the pump assembly 270. At this time, the outside of the first edge 222 is coupled to the inside of the pump housing 277 of the pump assembly 270, and the cylinder 271, the piston 272, and the like of the pump assembly 270 are accommodated inside the first edge 222.

Also, the inner container 220 further includes: a connecting portion 223 extending outward from a lower end of the first edge portion 222 and connected to an upper end of the first accommodating portion 221 having a wider cross section than the first edge portion 222; and a hooking protrusion 224 protruding outward from the connection part 223. The coupling part 223 and the catching protrusion 224 more stably mount the inner container 220 into the outer container 230 as described in detail below.

Also, the inner container 220 further includes: the tray 225 is disposed inside the first receiving portion 221 and moves upward according to the discharge of the contents. The tray 225 pushes the contents stored in the first receiving portion 221 upward as the contents are exhausted, and in particular, maintains a state of being in close contact with the inner wall of the first receiving portion 221, and rises correspondingly in a case where the volume of the contents in the first receiving portion 221 is reduced as the contents are discharged.

In order to smoothly raise the tray 225, a predetermined air inflow hole is formed at the lower end of the first receiving portion 221. As the contents are discharged, air flows into the inside of the first receiving part 221 through the air inflow hole as the tray 225 ascends. Thus, in the first receiving part 221, the contents are stored in a state of being shut off from the external air by the tray 225, and the pump assembly 270 of the present invention refers to an air pump (air pump) type.

The outer container 230 includes a second receiving portion 231 and a second rim portion 232, as in the inner container 220. The second receiving portion 231 forms a receiving space for receiving the inner container 220, and has a layered feeling formed by bending as compared with the first receiving portion 221. That is, the inner container 220 (particularly, the first container 231 of the inner container 220) is formed in a cylindrical shape, and the outer container 230 is formed in a curved surface protruding outward from the sidewall 241 of the second container 231, and is not limited to the type or number of contents to be contained and the shape of the first container 221, thereby providing a rich sense of layering. The shape of the outer container 230 is not limited thereto.

The upper end of the second receiving portion 231 is opened to receive the inner container 220, and a second rim portion 232 is formed to extend upward from the opened upper end. The second edge 232 is coupled to the support 240 to protrude inward to form a catch 233 for attaching the inner container 220. That is, when the inner container 220 is received in the outer container 230, the catching protrusion 224 of the inner container 220 catches to the catching ledge 233 of the outer container 230, limiting the receiving depth of the inner container 220, so that the inner container 220 and the outer container 230 are more stably combined. Thus, the locking plate 233 and the engaging projection 224 have a shape and a protruding length that engage with each other.

Although not shown in fig. 2 to 4, an inclined surface is formed between the vertical inner wall and the catching platform 233 at the second rim 232, and also the catching protrusion 224 of the inner container 220 has a shape corresponding thereto, thereby increasing a contact area between the inner container 220 and the outer container 230, so that the inner container 220 and the outer container 230 are more stably coupled.

Further, the engaging projection 224 and the connecting portion 223 of the inner container 220 are located below the upper end of the second rim portion 232 of the outer container 230. That is, even if the inner container 220 is attached to the outer container 230, the connecting portion 223 and the catch projection 224 are not located above the second edge portion 232 (i.e., the connecting portion 223 and the catch projection 224 are located inside the second edge portion 232), and the catch projection 224, the catch stand 233, and other structures for connection between the outer container 230 and the inner container 220 are not exposed to the outside of the outer container 230. This reduces interference of the inner container 220 due to external structures or external forces. In particular, in the conventional technique (see fig. 1(b)) in which the inner container is hooked to the edge portion of the outer container, the second edge portion 232 and the catch 233 can stably support the connecting portion 223 and the hooking protrusion 224 of the inner container 220 even if an external force acts laterally, for example, as opposed to the case where the arrangement position, posture, and the like of the inner container easily change depending on the external force.

In addition, although not shown in fig. 2 to 5, according to an embodiment, at least one rotation prevention protrusion is formed at a side of the connection portion 223 of the inner container 220, and at least one rotation prevention recess engaged with the rotation prevention protrusion is formed at a rear surface of the second rim portion 232 of the outer container 230, thereby preventing the inner container 220 from rotating. However, this is for illustration only, and according to the embodiment, various structures for preventing rotation can be applied between the inner container 220 and the outer container 230. For example, an anti-rotation groove is formed at the coupling portion 223 of the inner container 220, and an anti-rotation protrusion engaged with the anti-rotation groove is formed inside the second rim portion 232 of the outer container 230.

The support portion 240 serves to more stably couple the outer container 230 and the inner container 220, and more particularly, detachably couple the second brim portion 232 of the outer container 230, and pressurize the inner container 220 according to the coupling to closely fix the inner container 220 to the outer container 230. That is, in the present invention, in the case where the inner container 220 is mounted to the outer container 230, the primary coupling is performed by the hooking protrusion 224 of the inner container 220 and the catch 233 of the outer container 230, and then the secondary coupling between the inner container 220 and the outer container 230 is performed by the support part 240, thereby providing a stronger double coupling structure.

Thus, the support portion 240 is composed of the second side wall 241 of the outer container 230 coupled to the outside of the rim portion 232 and the upper wall 242 bent inward from the upper end of the side wall 241, and at least one pressing protrusion 243 for pressing the inner container 220 downward is formed below the upper wall 242. That is, the support portion 240 is coupled to the outer container 230 through the side wall 241, and the pressurizing protrusion 243 moves downward according to the coupling, and pressurizes the inner container 220 downward, so that the inner container 220 is in close contact with the outer container 230. According to the embodiment, the supporting portion 240 is coupled with the second rim portion 232 of the outer container 230 by various means such as screw coupling, insert coupling, etc., and for this reason, the inner wall of the supporting portion 240 and the outer wall of the second rim portion 232 have a suitable structure such as a protrusion, a spiral line, etc.

As described above, the engaging projection 224 and the connecting portion 223 of the inner container 220 are located below the upper end of the second rim portion 232 of the outer container 230. Therefore, the support 240 covers the outer container 230 and the inner container 220 with a simple structure of only the upper wall 242 formed by bending the side wall 241 and the side wall 241 without maintaining a complicated structure of multi-end bending. In particular, since the support portion 240 has a height corresponding to the second edge portion 232 of the outer container 230 in a state where the hooking protrusion 224 and the connection portion 223 of the inner container 220 are positioned at the lower side, the size is extremely reduced compared to the conventional coupling member, and in particular, the inner container 220 and the outer container 230 are slidably connected by the support portion 240, thereby generating a soft and prominent aesthetic appearance of the outer container 230 manufactured by blow molding.

The buffer part 250 is disposed between the support part 240 and the inner container 220, and transmits the pressure of the support part 240 to the inner container 220. As shown above, the support 240 presses the inner container 220 downward according to the coupling with the outer container 230, and it is difficult to appropriately press the inner container 220 according to the coupling state or degree of the support 240 and the outer container 230. For example, even if the coupling between the support 240 and the outer container 230 is finished, the pressurizing protrusion of the support 240 is not in contact with the connection part 223, or the pressurizing protrusion of the support 240 is in contact with the connection part 223 before the coupling between the support 240 and the outer container 230 is completed, the coupling between the support 240 and the outer container 230 can be slightly performed. In order to solve this problem, the buffer part 250 is located above the connection part 223 of the inner container 220 and below the pressurizing protrusion 243 of the support part 240, and is made of soft material such as rubber or silicon, and the length of the pressurizing protrusion 243 is substantially extended toward the connection part 223, and when excessive pressure is applied by the pressurizing protrusion 243, the length is reduced, and thus the inner container 220 is in close contact with the outer container 230 at an appropriate level.

The cover 260 covers the nozzle 210 to protect the nozzle 210 from contamination by preventing an unintentional external force from acting on the nozzle 210. The cover 260 is detachably coupled to an outer surface of the pump assembly 270, and is separated therefrom by a user. The cover 260 is formed in a cylindrical shape having a certain height to cover the nozzle portion 210, and in the case where the cover 260 is coupled to the outer surface of the pump assembly 270, the outer surface of the cover 260 is naturally slidably coupled to the outer surface of the support 240. In order to increase the coupling force of the cover 260, a jaw (not shown) and a chuck (not shown) are provided on the back surface of the cover 260 and/or the outer surface of the pump assembly 270, but these are merely examples, and various configurations may be applied to detach the cover 260.

At least a portion of the pump assembly 270 is received into the inner container 220 (particularly, the first rim portion 222) and attached to the first rim portion 222, thereby sealing the inner container 220. Thereafter, the contents contained in the inner container 220 are transferred to the nozzle portion 210 as the nozzle portion 210 is pressurized.

Specifically, the pump assembly 270 includes: a cylinder 271 having an inlet communicating with the inside of the first receiving portion 221; a piston 272 provided on an inner wall of the cylinder 271; a sealing portion 273 which is coupled to an upper end edge of the cylinder 271 to suppress the rise of the piston 272; a stem 274 having an inlet opened and closed by the piston 272 at one end and connected to the outlet of the nozzle portion 210; a bearing 275 coupled to the stem 274 to be integrally lifted and lowered, and inserted into the nozzle 210; an elastic part 276 for providing elastic force to the nozzle part 210 at the sealing part 273; and a pump housing 277 that houses and protects the structure.

The cylinder 271 is coupled to an opening of the inner vessel 220 and has an inlet communicating with the inside of the inner vessel 220. Specifically, a blade portion is formed at the upper end of the cylinder 271 outward, accommodated into the first rim 222 of the inner container 220, and mounted to the first rim 222. At this time, a soft sealing member is provided between the first edge 222 and the blade portion to prevent the contents in the inner container 220 from flowing out to the outside, so that the cylinder 271 is more stably coupled to the inner container 220. The cylinder 271 has an inlet formed at the center of the lower end toward the inside of the inner vessel 220 and a valve. The valve is a backflow prevention valve, seals the inlet when the internal pressure of the cylinder 271 is positive, and rotates upward to open the inlet when the internal pressure of the cylinder 271 changes to negative pressure.

The piston 272 is disposed on the inner wall of the cylinder 271. Since the piston 272 is provided in a state of being held at a certain position on the inner wall of the cylinder 271 by a frictional force, the piston 272 moves up and down together with the cylinder 271 in the absence of an external force, and the piston 272 has an H-shaped cross section, and the outer surface of the piston 272 contacts the inner wall of the cylinder 271 at least two support points, thereby sufficiently securing the frictional force. The inner surface of the piston 272 is in contact with the stem 274, but the shape of the piston 272 is determined so that the frictional force acting on the outer surface of the piston 272 is greater than the frictional force acting on the inner surface of the piston 272. The piston 272 can open and close an inlet port formed in the stem 274. Specifically, the lower end of the back surface of the piston 272 is in close contact with the support portion of the stem 274 to seal the inlet port, and when the piston 272 is raised by the stem 274, the gap between the lower end of the back surface of the piston 272 and the support portion of the stem 274 is opened to communicate the inlet port with the interior of the cylinder 271.

The sealing portion 273 is configured to be coupled to the upper end edge of the cylinder 271, and the lower end extends inward of the cylinder 271, thereby suppressing the rise of the piston 272. There is a gap between the inside of the sealing portion 273 and the below-described bearing 275 to allow movement of the sealing portion 273 based on the bearing 275. In this case, it is needless to say that another member for sealing may be disposed to prevent the fluid from leaking between the sealing portion 273 and the bearing 275.

The stem 274 has an inlet port opened and closed by the piston 272 on the outer surface on the lower side, and is connected to the discharge port of the nozzle portion 210. The stem 274 is surrounded on the lower side by the back surface of the piston 272, is connected on the upper side to the inside of the nozzle portion 210 via a bearing 275, and moves relative to the cylinder 271 or the like in the vertical direction. The stem 274 has a support portion at a lower end. The support portion has a truncated cone shape, and the inflow port is separated from the internal space of the cylinder 271 when the lower end of the back surface of the piston 272 is in close contact with the support portion. When the piston 272 is raised by the support portion, the lower end of the back surface of the piston 272 is partitioned by the support portion, and the inflow port is opened to communicate with the space inside the cylinder 271, so that the fluid inside the cylinder 271 flows into the stem 274.

The stem 274 has a hollow tubular shape, and has a lower side communicating with the inflow port and an upper side communicating with the outlet port through the inside of the bearing 275. Therefore, the content flows into the stem 274 through the inflow port opened by the piston 272, passes through the bearing 275, and is discharged through the nozzle portion 210.

The lower end of the bearing 275 is integrally coupled to the shank 274, and the upper end is coupled to the lower end of the nozzle portion 210. In addition, in the present specification, the bearing 275 and the shank 274 are described as separate structures, but the bearing 275 and the shank 274 may be provided as a single structure integrally manufactured. A blade portion is formed at the upper end of the bearing 275 so as to protrude along the outer peripheral surface.

The elastic portion 276 is disposed between the bearing 275 and the sealing portion 273. Specifically, the upper end of the elastic portion 276 is in close contact with the lower surface of the blade of the bearing 275, and the lower end is in close contact with the upper surface of the sealing portion 273, thereby applying an elastic force to the bearing 275 in the upper direction. That is, when the user presses the nozzle portion 210 and the nozzle portion 210, the bearing 275, and the like move in the downward direction, the elastic portion 276 applies an elastic force to restore the structure again. The elastic portion 276 is formed of, for example, a spring, but is not limited thereto, and various elastic materials are used according to an embodiment to which the present invention is applied.

The pump housing 277 accommodates the structure of the pump assembly 270 to the inside and protects from the outside. The groove of the inner wall of the pump housing 277 is engaged with the protrusion of the first rim 222 of the inner container 220 and combined with the inner container 220. In this coupling, the blade portion of the cylinder 271 disposed at the upper end of the first edge portion 222 of the inner container 220 is pressurized downward by the pressurizing portion protruding inward from the inner wall of the pump housing 277, so that the pump assembly 270 is coupled to the inner container 220 more stably, and the safety between the inner container 220 and the pump assembly 270 is maintained more stably.

Fig. 6 is a drawing showing an outer container and an inner container of a dual container according to an embodiment of the present invention. Specifically, fig. 6(a) is a perspective view showing the outer container, and fig. 6(b) is a perspective view showing the bottom surface of the inner container.

Referring to fig. 6(a), at least one air groove 234 is formed at the chuck 233 of the outer container 230'. The air groove 234 is used for air communication between the receiving space of the second receiving portion 231 and the inside of the second rim portion 232, and in case that the inner container 220' in the dual container 200 of the present invention is implemented by a dry type or the like, the contraction of the first receiving portion 221 or the upper movement of the tray 225 is smoothly performed along with the discharge of the contents, thereby allowing the entire contents to be used up in case that there is no abnormal operation of the water pump.

Also, as shown in fig. 6(b), at least one air groove 226 is formed at the catching protrusion 224 of the inner container 220 'like the catch 233 forming the outer container 230'.

The shape or configuration of the

air grooves

226, 234 as described above may vary according to embodiments to which the present invention is applicable. For example, the

air grooves

226, 234 are not formed in one of the catch 233 of the outer container 230 'and the catch projection 224 of the inner container 220'. For example, the air grooves 234 of the outer container 230 'and the air grooves 226 of the inner container 220' may be arranged at positions corresponding to each other or may be arranged alternately.

The dual container 200 of fig. 2 to 5 is different from the manner of implementation by the airless type, and the dual container 200' of fig. 7 is implemented by the deep tube (deep tube) type.

Specifically, in the dual container 200', a deep tube 229 communicating with a pump assembly 270 is included inside the first receiving part 221 of the inner container 220 ″. The contents stored in the first housing part 221 are discharged to the outside through the deep tube 229 by the pump assembly 270 and the nozzle part 210.

Thus, in the dual container 200', compared to the dual container 200 of fig. 2 to 5, the tray 225 is not included, and the air inflow groove is not formed at the lower end of the first receiving part 221.

Although not shown in fig. 7, according to the embodiment, in the double container 200' of the deep tube type, as described in fig. 6, at least one air groove is formed in the locking step 233 of the outer container 230 and/or the hooking protrusion 224 of the inner container 220 ″, and the shape or structure thereof is varied.

In summary, the most suitable embodiments are disclosed in the drawings and the description. Specific terms are used herein, but they are used only for describing the present invention, and are not used for limiting the meaning or the scope of the present invention described in the claims. Accordingly, it will be appreciated by those of ordinary skill in the art that various modifications and equivalent other embodiments can be made thereto. Therefore, the true technical scope of the present invention should be defined by the technical idea of the scope of claims.

Claims

1. A dual container, characterized in that,

the method comprises the following steps: a nozzle part for discharging the content through the discharge port by the pressurization of the user;

a pump assembly for discharging the contents in accordance with the pressurization of the nozzle portion;

an inner container including a first housing part for housing the contents and a first edge part formed to an upper side of the first housing part for housing and mounting at least a part of the pump assembly;

an outer container including a second receiving portion for receiving the inner container and a second edge portion formed upward from the second receiving portion; and

and a support portion detachably coupled to the second edge portion of the outer container, and configured to pressurize the inner container and tightly fix the inner container to the outer container according to the coupling.

2. The dual container of claim 1,

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

3. The dual container of claim 2,

the first receiving portion is formed in a cylindrical shape, and the second receiving portion is formed by a curved surface of which a side wall protrudes outward.

4. The dual container of claim 1,

the inner container further comprises:

a connecting portion extending outward from a lower end of the first edge portion and connected to an upper end of the first accommodating portion having a wider cross-section than the first edge portion; and

and a hanging and clamping projection projecting outwards from the connecting part.

5. The dual container of claim 4,

a locking boss protruding inward of the second edge portion is formed in the outer container, and the engaging protrusion of the inner container is attached to the locking boss.

6. The dual container of claim 5,

when the hanging-chucking protrusion is mounted on the chuck table, the hanging-chucking protrusion is located at a lower side than an upper end of the second edge portion.

7. The dual container of claim 1,

the support portion includes a side wall coupled to an outer side 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 pressing protrusion for pressing the inner container downward is formed on a lower side of the upper wall.

8. The dual container of claim 4,

further comprising: and a soft buffer part which is located above the connection part and transmits the pressure generated by the support part to the inner container so as to closely fix the inner container to the outer container.

9. The dual container of claim 4,

at least one rotation preventing protrusion is formed at the outer side of the connection part, and at least one rotation preventing recess engaged with the rotation preventing protrusion is formed at the inner side of the second rim part of the outer container to prevent the rotation of the inner container.

10. The dual container of claim 5,

at least one air groove for communicating air of the second receiving portion is formed at least one of the chuck table of the outer container and the hanging chuck protrusion of the inner container.

11. The dual container of claim 1,

further comprising:

a deep tube communicating with the pump assembly inside the first receiving portion of the inner container.

12. The dual container of claim 1,

an air inflow groove is formed at a lower side of the first receiving portion of the inner container, and a tray moving to an upper side along with discharge of the contents is disposed at an inner side of the first receiving portion.

13. The dual container of claim 1,

the pump assembly includes:

a cylinder having an inlet communicating with an inside of the first receiving portion;

the piston is arranged on the inner wall of the cylinder body;

a sealing part combined with the upper end edge of the cylinder to restrain the rising of the piston;

a stem having an inlet opened and closed by the piston formed at one end thereof and connected to a discharge port of the nozzle;

a bearing coupled to the stem so as to be integrally lifted and lowered, and inserted into the nozzle; and

and an elastic portion for providing an elastic force from the sealing portion toward the nozzle portion.

14. The dual container of claim 12,

the pump housing of the pump assembly is coupled to the outside of the first edge, and the cylinder and the piston of the pump assembly are accommodated inside the first edge.