Cosmetic Container Having Expandable Pressurizing Member for Pressurizing Contents

Abstract

The present invention relates to a cosmetic container having an expansion pressurization unit for pressurizing contents, which allows the contents contained inside the container body to be discharged smoothly without any residue. By utilizing a pressure change formed by the operation of a pumping means, air is introduced into the expansion pressurization unit, causing the expansion pressurization unit to expand from the upper side to the lower side inside the container. Accordingly, the contents inside the container are pressurized in the lower direction and can be stably moved toward the dip tube.

Description

Technology Field

[0001] The present invention relates to a cosmetic container having an expansion pressurizing part for pressurizing contents, and more specifically, to a cosmetic container having an expansion pressurizing part for pressurizing contents that enables the contents contained inside the container body to be discharged smoothly without any residue. Background Technology

[0003] Generally, various cosmetics such as ampoules, lotions, essences, and serums are provided in a liquid or viscous state, and various types of cosmetic containers are used to store and use these contents. Conventional cosmetic containers are formed in various structures depending on the characteristics of the contents, the method of use, and design elements, and dropper-type containers, tube-type containers, and pump-type containers are widely used as representative examples.

[0004] While conventional cosmetic containers focused simply on the function of holding and storing contents, the functionality of the container is also being recognized as important due to the recent trend toward the functionality and high price of cosmetics. Accordingly, recent cosmetic containers emphasize functionality that minimizes the ingress of external air or foreign substances to prevent spoilage of the contents and enables stable storage for a long period, while also allowing the user to hygienically and conveniently dispense the required amount of contents.

[0005] Pump-type cosmetic containers are widely used as structures to implement these functions. A typical pump-type cosmetic container includes a container body that holds the cosmetic, an inner cap coupled to the open top of the container body, and a pumping member coupled to the inner cap that discharges the contents inside the container to the outside through a pumping action. Additionally, a dip tube extending toward the bottom surface inside the container is connected to the lower part of the pumping member, so that the contents inside the container are sucked in and discharged to the outside through the pumping member and the dip tube.

[0006] However, conventional pump-type cosmetic containers have a problem in that while they allow for relatively smooth dispensing during the initial stage of use when there is sufficient content remaining, smooth dispensing becomes difficult when the content gradually decreases and only a small amount remains inside the container. In particular, since cosmetics are often in liquid or gel form with a viscosity above a certain level, there is a problem in that the contents remaining inside the container do not easily accumulate downward. Consequently, even if the user operates the pump repeatedly, the contents are not dispensed, and a certain amount of cosmetic remains inside the container unused until the end, which causes economic loss to the consumer. Prior art literature

[0008] Republic of Korea Published Utility Model Publication No. 20-2014-0002216 The problem to be solved

[0009] The objective of the present invention, which is to solve the problems of the prior art as described above, is to provide a cosmetic container equipped with an expansion pressurization unit for pressurizing contents, which uses a pressure change formed by the operation of a pumping means to introduce air into the expansion pressurization unit, and pressurizes the contents inside the container body in a downward direction by the expansion of the expansion pressurization unit so that the contents can move stably in the direction of the dip tube. means of solving the problem

[0011] To achieve the above objective, the present invention provides a cosmetic container having an expansion pressurizing unit for pressurizing contents, comprising: a container body having a receiving space for receiving contents; a cap member coupled to the upper side of the container body; a button provided on the upper side of the cap member; a dip tube for guiding contents of the receiving space; a pumping means connected to the dip tube and discharges contents of the receiving space to the outside in conjunction with the operation of the button; and an expansion pressurizing unit provided inside the container body, the volume of which varies as air is introduced, wherein air is introduced into the interior of the expansion pressurizing unit according to a pressure change caused by the operation of the pumping means, and the expansion pressurizing unit is configured to expand from the upper side to the lower side inside the container body.

[0012] Additionally, the above-described pumping means comprises: a housing formed to be inserted into the upper side of the container body, with the dip tube communicating with the lower side and a first space formed inside; a cylinder installed to be movable up and down inside the housing, with the button communicating with the upper side and a third space formed inside; and a valve member for controlling the flow of contents guided from the dip tube through the first space to the third space, wherein a pressurized space for accommodating air is formed between the housing and the cylinder, an inlet hole communicating with the pressurized space is formed on one side of the housing, and the expansion pressurized part is extended to cover the inlet hole and communicates with the inlet hole, and as the cylinder moves, air in the pressurized space flows into the expansion pressurized part through the inlet hole. The present invention provides a cosmetic container having an expansion pressurized part for pressurizing contents.

[0013] In addition, the present invention provides a cosmetic container having an expansion pressurizing member for pressurizing contents, characterized in that the valve member moves along the cylinder and selectively opens and closes the inlet hole.

[0014] Additionally, the valve member is installed to be movable up and down along the lower side of the cylinder, and in its original position before the cylinder descends, the valve member is positioned to block the inlet hole so as not to communicate with the pressurized space and the inlet hole; when the cylinder descends, the valve member moves downward toward the inlet hole so as to communicate with the pressurized space and the inlet hole; and when the cylinder ascends, the valve member rises, thereby increasing the pressure in the pressurized space and allowing air in the pressurized space to flow into the expansion pressurized section through the inlet hole. The present invention provides a cosmetic container having an expansion pressurized section for pressurizing contents.

[0015] Additionally, a concave portion is formed on the lower outer surface of the cylinder inserted into the upper inner side of the housing, an undercap is interposed in the space between the cylinder and the housing, a coupling guide portion is formed protruding in the direction of the concave portion on the lower side of the undercap located above the inlet hole, and the pressurizing space portion is divided into a pumping stroke formed between the concave portion and the undercap and a stem stroke formed between the coupling guide portion and the valve member based on the coupling guide portion, and when the cylinder descends, the air of the pumping stroke passes through the coupling guide portion and moves to the stem stroke, and when the cylinder ascends, the air of the stem stroke flows into the expansion pressurizing portion through the inlet hole. The present invention provides a cosmetic container having an expansion pressurizing portion for pressurizing contents.

[0016] Additionally, when the cylinder descends, the concave portion slides downward while in contact with the coupling guide portion, thereby reducing the volume of the pumping stroke and increasing the volume of the stem stroke, so that air from the pumping stroke moves to the stem stroke through the flow path between the coupling guide portion and the cylinder, and when the cylinder rises, the concave portion slides upward while in contact with the coupling guide portion, and the valve member rises, thereby reducing the volume of the stem stroke, so that pressure is generated in the stem stroke, and air from the stem stroke flows into the expansion pressurizing portion through the inlet hole, thereby providing a cosmetic container having an expansion pressurizing portion for pressurizing contents.

[0017] Additionally, the upper side of the expansion pressurizing part is positioned on the upper side of the interior of the container body, with a side wall opening formed in the direction of the inlet hole, and the lower side of the expansion pressurizing part is extended in the direction of the lower side of the housing, and when air from the pressurizing space flows into the expansion pressurizing part through the inlet hole and the side wall opening, the side between the upper and lower sides of the expansion pressurizing part expands from the upper side to the lower side of the interior of the container body, thereby lowering the contents contained in the upper side of the container body and guiding the contents contained in the receiving space to move toward the dip tube, thereby providing a cosmetic container having an expansion pressurizing part for pressurizing contents.

[0018] In addition, the cosmetic container has an expansion pressurizing part for pressurizing contents, characterized in that the expansion pressurizing part is formed so that the dip tube penetrates the center and surrounds the outer side of the dip tube.

[0019] Additionally, the present invention provides a cosmetic container having an expansion pressure member for pressurizing contents, characterized by further including an outer protrusion formed extending outwardly on the upper side of the housing to face the upper side of the container body, a pipe formed extending downwardly on the lower side of the housing to insert the dip tube, an upper coupling guide formed extending on the upper side of the expansion pressure member to be inserted between the upper side of the housing and the upper side of the container body, and a lower coupling guide formed extending on the lower side of the expansion pressure member to be inserted between the pipe and the dip tube.

[0020] Additionally, the above valve member comprises: a seal cap inserted into the housing so as to be positioned at the lower part of the cylinder; and a guide rod having a second space formed therein that communicates with the upper part of the third space and is formed therein, with the upper part penetrating the seal cap and the lower part extending to be exposed to the first space and the second space formed therein communicating with the upper part of the third space, and a contact guide formed at the lower part of the stem, wherein a stem hole communicating with the first space is formed at the lower side of the second space and the stem hole is configured to be selectively opened or closed by the seal cap depending on whether the contact guide and the seal cap are in contact. This provides a cosmetic container having an expansion pressurizing part for pressurizing contents.

[0021] Additionally, the cosmetic container is provided with an expansion pressurizing member for pressurizing contents, characterized in that, in the original position before the cylinder descends, a gap is formed between the upper side of the seal cap and the lower side of the cylinder, and the lower side of the seal cap is in close contact with the sealing guide, thereby closing the stem hole; when the cylinder descends, the seal cap moves by the gap space of the gap, and a gap is formed between the sealing guide and the seal cap, thereby opening the stem hole; and in the state where the stem hole is open, contents moved to the first space through the dip tube are moved to the third space through the stem hole and the second space.

[0022] In addition, a cosmetic container having an expansion pressurization unit for pressurizing contents is provided, characterized by further including an elastic restoring unit disposed between the button and the housing and having elasticity, and a check valve that selectively opens and closes a lower hole formed on the lower side of the housing to communicate with the deep tube. Effects of the invention

[0024] The present invention utilizes a pressure change formed by the operation of a pumping means to allow air to flow into the expansion pressurization part, thereby causing the expansion pressurization part to expand from the upper side to the lower side inside the container, and accordingly, the contents inside the container are pressurized in the lower direction and can be stably moved toward the dip tube.

[0025] In addition, during the operation of the pumping means, air is continuously supplied into the expansion pressurization part, causing the expansion pressurization part to gradually expand, so that the contents contained inside the container can be efficiently discharged down to the remaining amount.

[0026] In addition, through a structure that divides the pressurized space formed between the cylinder and the housing into a pumping stroke and a stem stroke, the movement of air according to the movement of the cylinder can be smoothly achieved.

[0027] In addition, by utilizing the sliding structure of the coupling guide and the concave section, the volume of the pressurized space can be efficiently changed according to the lifting movement of the cylinder, thereby enabling the stable supply of air into the expansion pressurized section.

[0028] In addition, since the expansion pressurizing part is formed to surround the upper outer circumference of the dip tube, the contents inside the container can be easily moved toward the lower side of the dip tube by the expansion of the expansion pressurizing part. Brief explanation of the drawing

[0030] FIG. 1 is a schematic drawing illustrating a cosmetic container having an expansion pressurizing part for pressurizing contents according to a preferred embodiment of the present invention. FIG. 2 is a schematic diagram illustrating an expansion pressurization unit and a pumping means according to a preferred embodiment of the present invention. FIG. 3 is an enlarged cross-sectional view illustrating a pressurized space according to a preferred embodiment of the present invention. FIG. 4 is an operating state diagram showing a cylinder in a slightly lowered state from its original position according to a preferred embodiment of the present invention. FIG. 5 is an operating state diagram showing the state in which the cylinder is fully lowered according to a preferred embodiment of the present invention. FIG. 6 is an operating state diagram showing the state immediately before rising pressure is applied to the cylinder according to a preferred embodiment of the present invention. FIG. 7 is an operating state diagram showing a state in which rising pressure is applied to a cylinder according to a preferred embodiment of the present invention. FIG. 8 is an operating state diagram showing a fully raised cylinder according to a preferred embodiment of the present invention. FIG. 9 is an operating state diagram showing the state in which the expansion pressurizing part gradually expands as the cylinder moves up and down according to a preferred embodiment of the present invention. FIG. 10 is an operating state diagram illustrating the state in which the contents inside the container body are pressurized by the expansion of the expansion pressurizing part according to a preferred embodiment of the present invention and discharged until the remaining amount is discharged. Specific details for implementing the invention

[0031] Hereinafter, a cosmetic container having an expansion pressurizing part for pressurizing contents according to a preferred embodiment of the present invention will be described in more detail with reference to the attached drawings.

[0033] FIG. 1 is a schematic drawing illustrating a cosmetic container having an expansion pressurizing part for pressurizing contents according to a preferred embodiment of the present invention.

[0034] Referring to FIG. 1, a cosmetic container having an expansion pressurizing part for pressurizing contents according to a preferred embodiment of the present invention is configured to introduce air into the expansion pressurizing part (500) using a pressure change resulting from the operation of a pumping means (300), thereby causing the expansion pressurizing part (500) to expand from the upper side to the lower side inside the container body (100), and comprises a container body (100), a cap member (200), a button (250), an elastic restoring part (370), a dip tube (400), a pumping means (300), and an expansion pressurizing part (500).

[0035] The container body (100) is formed to be long in the vertical direction, for example, to make it easy for a user to grip, and a receiving space (110) for receiving contents is formed inside. The container body (100) may be formed of a transparent or translucent material such as glass or plastic so that the user can check the remaining amount of contents contained inside. In addition, various types of contents, such as liquid cosmetics, functional cosmetics, or viscous cosmetics, may be contained in the receiving space (110) of the container body (100). Since these cosmetics generally have a certain viscosity, if a remaining amount remains inside the container body (100), it may not naturally move toward the bottom of the container body (100) or the bottom of the dip tube (400). To solve this problem, the present invention is configured to pressurize the contents inside the container body (100) downward using the expansion action of the expansion pressurizing unit (500) described later.

[0036] A neck (102) may be formed protruding from the upper side of the container body (100). The neck (102) is formed with a structure in which an internal empty space is formed and both ends are open. The upper side of the container body (100) is opened to the outside by the neck (102). A cap member (200), which will be described later, may be attached to the neck (102).

[0037] The cap member (200) is coupled to the open upper side of the container body (100) and serves to seal the inside of the container body (100). This cap member (200) includes, for example, an inner cap (220) formed in a cylindrical shape to surround the neck (102) and formed in a double structure, and an outer cap (210) formed to surround the outer side of the inner cap (220). The lower side of the inner cap (220) is coupled to the neck (102) in various ways, such as a screw coupling method or a snap coupling method. The upper side of the inner cap (220) is formed to protrude upward from the neck (102). At this time, the upper side of the inner cap (220) is formed to be open upward. Then, a plate-shaped barrier (222) is formed between the upper and lower sides inside the inner cap (220) to block the interior of the inner cap (220), and an inner cap undercut (222a) is formed through the center of the barrier (222). The barrier (222) serves to seal the lower side inside the inner cap (220). The inner cap undercut (222a) allows the cylinder (320), which will be described later, to pass through. Additionally, depending on the case, the inner cap (220) and the outer cap (210) of the cap member (200) may be formed as a single unit.

[0038] A button (250) is mounted on the open upper side of the inner cap (220) so as to be movable up and down. This button (250) is formed in various shapes, such as a button shape or a pressing part shape, so that the user directly performs a pressing action. A nozzle (252) for discharging contents to the outside is formed inside the button (250). When the user presses the button (250), the pumping means (300) described later is activated, and the contents inside the container body (100) are discharged to the outside through the nozzle (252) by the operation of the pumping means (300).

[0039] The elastic restoration part (370) is positioned between the button (250) and the housing (310) described later and is configured to have elasticity. The elastic restoration part (370) is formed of an elastic material to have elastic restoring force, for example, it can be formed of a spring, rubber, synthetic resin, etc. Additionally, the elastic restoration part (370) is formed in the shape of a hollow column or a hollow structure so that the cylinder (320) described later is inserted, and can be formed so that a plurality of concave and convex parts are alternately arranged in the vertical direction. When the user presses the button (250), the elastic restoration part (370) is compressed. When the pressure applied to the button (250) is released, the elastic restoration part (370) is restored to its original position by the elastic restoring force, and in this process, the cylinder (320) is induced to rise.

[0040] The dip tube (400) serves as a channel that guides the contents inside the container body (100) to move to the pumping means (300). This dip tube (400) is formed in the shape of a tube that is long in the longitudinal direction, with one end connected to the pumping means (300) and the other end extending downward inside the container body (100). Then, by the operation of the pumping means (300), the contents move along the dip tube (400) to the pumping means (300) and are subsequently discharged to the outside through the button (250).

[0041] The expansion pressurizing part (500) is provided inside the container body (100) and can be formed of an elastic material, such as a balloon, so that its internal volume, i.e., volume, can change or expand as air is introduced. The expansion pressurizing part (500) is formed in a tube shape, such as a tube, through which the dip tube (400) passes in the center, and is arranged to surround the upper outer circumference of the dip tube (400). Since the expansion pressurizing part (500) is formed to surround the upper outer circumference of the dip tube (400) in this way, the contents inside the container body (100) can be easily moved in the downward direction of the dip tube (400) by the expansion of the expansion pressurizing part (500).

[0043] FIG. 2 is a schematic diagram illustrating an expansion pressurization unit and a pumping means according to a preferred embodiment of the present invention.

[0044] Referring to FIGS. 1 and 2, if we examine the structure of the expansion pressurization section (500) in detail, the upper side of the expansion pressurization section (500) is extended to cover the inlet hole (314). At this time, a side wall opening (502) is formed on the upper side of the expansion pressurization section (500) to face the inlet hole (314), so that the expansion pressurization section (500) is configured to communicate with the inlet hole (314). Unless otherwise specified in the present invention, communication refers to a state in which fluid is connected to one another so that fluid can move. Accordingly, when air from the pressurization space section (360) described later flows into the expansion pressurization section (500) through the inlet hole (314), the pressure inside the expansion pressurization section (500) increases, and accordingly, the expansion pressurization section (500) expands. And when the expansion pressurizing part (500) expands, the expansion pressurizing part (500) expands from the upper side to the lower side inside the container body (100), and during this process, the contents contained inside the container body (100) are pressurized in the lower side. The expansion process of the expansion pressurizing part (500) will be described later.

[0045] Additionally, an upper coupling guide (501) is formed protruding outwardly on the upper side of the expansion pressure part (500). The upper coupling guide (501) is extended horizontally so as to be inserted between the upper end of the neck (102) and the lower end of the outer protrusion (311). At this time, a plurality of upper pressure protrusions (311a) are formed protruding outwardly on the lower end of the outer protrusion (311) to press the upper coupling guide (501).

[0046] Additionally, a lower coupling guide (504) is provided on the lower side of the expansion pressurization part (500) and extends downward to be coupled to the lower extension part (318a) of the pipe (318) described later. The lower coupling guide (504) is formed to be inserted between the lower extension part (318a) of the pipe (318) and the deep tube (400), and may be formed vertically in a bent upward shape as needed. At this time, the inner side of the lower extension part (318a) facing the lower coupling guide (504) or the outer side of the deep tube (400) may be formed concavely so that the lower coupling guide (504) is guided.

[0047] Additionally, for example, as shown in FIG. 2, a lower pressure protrusion (318b) may be formed protrudingly on the lower extension (318a) of the lower coupling guide (504) or the pipe (318) to apply pressure to the lower coupling guide (504). The lower pressure protrusion (318b) is formed convexly so as to contact the upper side of the lower coupling guide (504) from the inner side of the lower extension (318a). The lower pressure protrusion (318b) may be formed in a semicircular or elliptical shape having a gentle curvature in cross-section. The protrusion height of the lower pressure protrusion (318b) may be set considering the thickness and material elasticity of the lower coupling guide (504), thereby inducing elastic deformation when the lower coupling guide (504) is inserted, while ensuring stable contact without excessive deformation. At this time, the contact portion of the lower pressure protrusion (318b) is formed as a curved surface with rounded edges, so that damage or jamming due to interference during insertion can be prevented. Due to this lower pressure protrusion (318b), the lower coupling guide (504) is elastically deformed inward and is fixed in close contact with the lower extension (318a).

[0048] Additionally, as illustrated in FIG. 3, a plurality of lower pressure protrusions (318c) may be spaced apart at regular intervals along the longitudinal direction along the inner surface of the lower extension (318a). Each lower pressure protrusion (318c) has a protruding convex shape and may be formed in a cross-section such as a semicircle, ellipse, or triangle. These lower pressure protrusions (318c) are arranged at regular intervals from one another and configured to make contact at multiple locations along the outer surface of the lower coupling guide (504). Accordingly, the lower coupling guide (504) is uniformly pressured throughout the longitudinal direction without being limited to a specific point, and flow in the vertical direction can be suppressed. Of course, depending on the case, the inner surface of the lower extension (318a) may be configured to be flat without the lower pressure protrusions (318c).

[0049] As such, the expansion pressure part (500) is equipped with an upper coupling guide part (501) and a lower coupling guide part (504), so that the connection with the neck (102) and the pipe (318) can be stably achieved, and the coupling force is further enhanced by the upper pressure protrusion (311a) and the lower pressure protrusion (318b, 318c).

[0050] In addition, as the upper coupling guide (501) is extended in a horizontal direction, a support structure is formed by surface contact between the neck (102) and the outer protrusion (311), so that the upper position of the expansion pressure part (500) can be stably fixed, and the effect of preventing detachment and improving airtightness is achieved through the pressurizing action by the upper pressure protrusion (311a). In addition, as the lower coupling guide (504) is extended in a vertical direction, a support structure is formed by surface contact between the lower extension part (318a) and the dip tube (400), so that the lower side of the expansion pressure part (500) can be stably fixed in position, and the effect of increasing the coupling force and preventing movement or detachment is achieved through the pressurizing action by the lower pressure protrusions (318b, 318c).

[0051] The pumping means (300) performs the function of discharging the contents inside the container body (100) to the outside in conjunction with the operation of the button (250), and may be configured to include a housing (310), a check valve (380), a cylinder (320), and a valve member (330).

[0052] The housing (310) is formed to be inserted into the neck (102) formed on the upper side of the container body (100), and may be formed in a long cylindrical shape in the vertical direction. The upper side of the housing (310) is provided with an outer protrusion (311) that extends outwardly to be supported on the lower side of the barrier (222) through an inner cap undercut (222a). The outer protrusion (311) is formed to protrude outwardly in a horizontal direction on the upper side of the housing (310), and the outer protrusion (311) is positioned to face the upper end of the neck (102). The lower side of the housing (310) extends past the neck (102) to be positioned on the upper side of the container body (100). A first space (312), which is an empty space, is provided along the interior of the housing (310), and a lower hole (316) is formed through the lower side of the housing (310). A deep tube (400) is connected to the lower hole (316). At this time, a pipe (318) is integrally extended downward along the inner circumference of the lower hole (316), and the upper side of the deep tube (400) is inserted into the pipe (318) so that the deep tube (400) and the lower hole (316) are connected. An inlet hole (314) is formed on the side between the upper and lower sides of the housing (310). And at the lower end of the pipe (318), a lower extension part (318a) may be integrally extended downward along the longitudinal direction of the deep tube (400).

[0053] The check valve (380) selectively opens and closes a lower hole (316) formed on the lower side of the housing (310) to communicate with the dip tube (400). The check valve (380) is positioned inside the lower side of the housing (310) and opens or closes the lower hole (316) according to changes in pressure in the first space (312). For example, when the button (250) is pressed and the cylinder (320) descends, the pressure in the first space (312) increases, and the check valve (380) closes the lower hole (316), thereby preventing the contents from flowing back toward the dip tube (400). Conversely, when the pressure applied to the button (250) is released and the cylinder (320) rises, the check valve (380) moves upward due to the vacuum pressure, i.e., negative pressure, formed in the first space (312), and the lower hole (316) is opened, and accordingly, the contents of the container body (100) flow into the first space (312) through the dip tube (400).

[0054] The cylinder (320) is formed to be long along the longitudinal direction, and a third space (322), which is an empty space, is formed along the internal longitudinal direction of the cylinder (320). The lower side of the cylinder (320) is installed to be movable up and down while inserted into the upper side of the first space (312), and the upper side extends upward from the first space (312) and communicates with the button (250).

[0055] The valve member (330) controls and regulates the flow of contents guided from the dip tube (400) through the first space (312) to the upper side of the third space (322), and includes a seal cap (332) and a guide rod (334).

[0056] The seal cap (332) can be inserted into the lower side of the first space (312) of the housing (310) so as to be positioned at the lower part of the cylinder (320), and configured to move in the up and down direction in conjunction with the movement of the cylinder (320). This seal cap (332) can be formed, for example, in the shape of a cylinder or a column, and can be formed from a material with a relatively high coefficient of friction so as to be positioned to be in close contact with the inner surface of the housing (310). Accordingly, the seal cap (332) is configured so that it does not move arbitrarily inside the housing (310) when no external pressure is applied. And when the seal cap (332) is positioned in the first space (312) of the housing (310), the outer side of the seal cap (332) selectively opens and closes the inlet hole (314) depending on the position of the seal cap (332).

[0057] The guide rod (334) includes a stem (336) and a close guide portion (338). The upper side of the stem (336) is inserted into the lower side of the third space portion (322) by penetrating the seal cap (332), and the lower side is extended so as to be exposed to the first space portion (312). A second space portion (336a) is formed inside the stem (336) to communicate with the upper side of the third space portion (322). The upper side of the stem (336) is engaged with the cylinder undercut (323) of the cylinder (320) and moves up and down together with the cylinder (320). Additionally, a stem hole (336b) is formed on the lower side of the second space portion (336a) to communicate with the first space portion (312).

[0058] The contact guide portion (338) is integrally formed on the lower side of the stem (336) to have a diameter larger than the diameter of the stem (336). The stem hole (336b) is configured to be selectively opened or closed by the seal cap (332) depending on whether the contact guide portion (338) and the seal cap (332) are in contact. For example, in the original position before the cylinder (320) descends, a first separation portion (340) is formed to be spaced apart between the cylinder (320) and the upper side of the seal cap (332), and in this state, the lower side of the seal cap (332) is in close contact with the contact guide portion (338), thereby closing the stem hole (336b). At this time, the seal cap (332) is positioned to block the inflow hole (314), so that the pressurized space portion (360) and the inflow hole (314) are not in communication. And when the cylinder (320) descends, the stem hole (336b) is opened, and the seal cap (332) is positioned so as not to block the inlet hole (314). This operating state will be described in detail with reference to the drawings below.

[0060] FIG. 3 is an enlarged cross-sectional view illustrating a pressurized space according to a preferred embodiment of the present invention.

[0061] Referring to FIGS. 1 to 3, the pressurized space (360) forms a space for accommodating air between the housing (310) and the cylinder (320). In addition, a concave portion (324) is formed in the cylinder (320) to guide the air inside the pressurized space (360) to move stably to the expansion pressurized portion (500). Furthermore, an undercap (350) is interposed in the space between the cylinder (320) and the housing (310).

[0062] The concave portion (324) is formed on the lower outer side of the cylinder (320) inserted into the housing (310), and is formed as an annular recessed structure, a stepped structure, or a concave structure having a diameter relatively smaller than the upper outer surface of the cylinder (320). External air can be accommodated in the space between this concave portion (324) and the inner side of the housing (310), i.e., the pressurized space (360).

[0063] The undercap (350) is formed in a shape that surrounds the lower side of the outer surface of the cylinder (320) where the concave portion (324) is formed, and a pressure space (360) is provided between the concave portion (324) and the undercap (350). An undercap undercut (352) protrudes from the upper side of the undercap (350) so as to be engaged and coupled while inserted into the inner cap undercut (222a). A coupling guide (354) is formed on the lower side of the undercap (350) and protrudes in the downward direction of the concave portion (324). The coupling guide (354) can slide along the vertical direction of the concave portion (324) during the movement of the cylinder (320). In practice, the concave portion (324) slides along the coupling guide (354) as it moves. At this time, the pressurized space (360) is divided into a pumping stroke (362) formed between the upper side of the concave portion (324) and the under cap (350) based on the coupling guide portion (354), and a stem stroke (364) formed between the coupling guide portion (354) and the valve member (330).

[0065] Hereinafter, the operation of a cosmetic container equipped with an expansion pressurizing unit for pressurizing contents according to a preferred embodiment of the present invention will be described.

[0067] FIG. 4 is an operating state diagram showing a cylinder in a slightly lowered state from its original position according to a preferred embodiment of the present invention, and FIG. 5 is an operating state diagram showing a cylinder in a fully lowered state according to a preferred embodiment of the present invention.

[0068] First, referring to FIGS. 2 and FIGS. 3, in the original position before the cylinder (320) descends, the valve member (330) is positioned to block the inlet hole (314), so that the pressurized space (360) and the inlet hole (314) are not in communication. In addition, in this state, a first separation portion (340) is formed between the cylinder (320) and the seal cap (332), and the lower side of the seal cap (332) is in close contact with the contact guide portion (338), thereby closing the stem hole (336b).

[0070] Next, referring to FIG. 4, when the user slightly presses the button (250), the elastic restoring part (370) is compressed and deformed into a certain shape, and the cylinder (320) descends only slightly from its original position. That is, the cylinder (320) descends by the upper and lower spacing of the first spacing part (340). Then, the seal cap (332) does not move, and only the cylinder (320) descends by the spacing of the first spacing part (340). Thus, a gap, i.e., a second spacing part (342), is formed between the seal cap (332) and the lower side of the seal cap (332) and the close-contact guide part (338) which moves together with the cylinder (320), and accordingly, the stem hole (336b) is opened to communicate with the first space part (312).

[0071] At this time, the pumping stroke (362) is filled with air introduced from the outside. Since the elastic restoring part (370) is not in a state of being in close contact with the outside of the cylinder (320), air can move through the gap between the elastic restoring part (370) and the cylinder (320), so the pumping stroke (362) can be filled with air introduced from the outside.

[0073] Next, referring to FIG. 5, when the button (250) is fully pressed and the cylinder (320) is fully lowered, the contact guide (338) is lowered and pressurizes the lower part of the first space (312). Accordingly, the contents filled in the first space (312) are moved to the second space (336a) through the stem hole (336b), then pass through the third space (322), and are discharged to the outside through the nozzle (252). At this time, as the pressure in the first space (312) increases due to the force of the contact guide (338), the check valve (380) closes the lower hole (316) of the housing (310) so that the contents do not flow back into the container body (100).

[0074] Meanwhile, when the button (250) is pressed and the cylinder (320) is fully lowered, the concave portion (324) slides downward while in contact with the coupling guide portion (354). At this time, the volume of the pumping stroke (362) decreases and the volume of the stem stroke (364) increases, and accordingly, the air present in the pumping stroke (362) moves to the stem stroke (364) through the flow path between the coupling guide portion (354) and the cylinder (320). At the same time, the seal cap (332) is configured to move downward from the inlet hole (314) so ​​as not to block the inlet hole (314), thereby connecting the stem stroke (364) and the inlet hole (314).

[0076] FIG. 6 is an operating state diagram showing the state immediately before upward pressure is applied to a cylinder according to a preferred embodiment of the present invention, FIG. 7 is an operating state diagram showing the state in which upward pressure is applied to a cylinder according to a preferred embodiment of the present invention, FIG. 8 is an operating state diagram showing the state in which the cylinder is fully raised according to a preferred embodiment of the present invention, and FIG. 9 is an operating state diagram showing the state in which the expansion pressurizing part gradually expands as the cylinder moves up and down according to a preferred embodiment of the present invention.

[0077] Referring to FIGS. 6 to 8, when the pressure applied to the button (250) is released, the cylinder (320) rises due to the elastic force of the elastic restoration part (370). At this time, just before the cylinder rises as in FIG. 6, air from the stem stroke (364) flows little by little into the expansion pressurization part (500) through the inlet hole (314) and the side wall opening (502), and the expansion pressurization part (500) begins to expand.

[0078] Next, as shown in FIG. 7, when the cylinder (320) rises due to the elastic force of the elastic restoration part (370), vacuum pressure is formed on the lower side of the first space part (312), and as a result, the check valve (380) moves upward and the lower hole (316) opens. As a result, the contents contained in the receiving space (110) of the container body (100) are newly introduced into the first space part (312) through the lower hole (316).

[0079] Meanwhile, the concave portion (324) slides upward while in contact with the coupling guide portion (354), and the valve member (330) also rises together, reducing the volume of the stem stroke (364) and increasing the internal pressure. Accordingly, air from the stem stroke (364) flows into the expansion pressurization portion (500) through the inlet hole (314) and the side wall opening (502), and as the expansion pressurization portion (500) expands, it pressurizes the contents inside the container body (100) downward.

[0081] Referring to FIG. 9, as the user repeatedly presses the button (250), the pumping means (300) repeatedly moves up and down, and accordingly, air of the stem stroke (364) continuously flows into the expansion pressurization part (500) through the inlet hole (314) and the side wall opening (502). Then, the expansion pressurization part (500) gradually expands, and the contents inside the container body (100) are pressurized downward by the expansion pressurization part (500).

[0082] In this way, as the pumping means (300) moves, the air inside the pressurized space (360) is configured to flow into the expansion pressurized part (500) through the inlet hole (314), so that the expansion pressurized part (500) expands by the pumping operation of the pumping means (300) without a separate air injection device.

[0084] FIG. 10 is an operating state diagram illustrating the state in which the contents inside the container body are pressurized by the expansion of the expansion pressurizing part according to a preferred embodiment of the present invention and discharged until the remaining amount is discharged.

[0085] Referring to FIG. 10, when air is continuously supplied into the expansion pressurization part (500) by a pumping operation by a pumping means (300), the expansion pressurization part (500) gradually expands downward and pressurizes the contents inside the container body (100) downward. Then, the contents inside the container body (100) move smoothly toward the bottom of the dip tube (400), allowing even the remaining contents to be efficiently discharged, thereby improving the efficiency of using the cosmetic.

[0086] In addition, during the operation of the pumping means (300), air is continuously supplied into the expansion pressurization part (500), causing the expansion pressurization part (500) to gradually expand, so that the contents contained inside the container body (100) can be efficiently discharged down to the remaining amount.

[0087] In addition, the pressurized space (360) is divided into a pumping stroke (362) and a stem stroke (364) by an under cap (350) and a coupling guide (354) interposed between the concave portion (324) formed in the cylinder (320) and the housing (310), and as air moves between the pumping stroke (362) and the stem stroke (364) according to the movement of the cylinder (320), the pressure of the stem stroke (364) increases, so that the air of the stem stroke (364) is easily supplied into the expansion pressurized portion (500) through the inlet hole (314).

[0088] Additionally, since the lower side of the expansion pressurization part (500) is formed to extend in the direction of the lower side of the housing (310), when external air flows into the expansion pressurization part (500), the side between the upper and lower sides of the expansion pressurization part (500) expands from the upper side to the lower side inside the container body (100), thereby lowering the contents contained in the upper side of the container body (100) and guiding the contents contained in the receiving space (110) to move toward the dip tube (400).

[0090] Although the present invention has been described in detail in the above embodiments, it is obvious that the present invention is not limited thereto, and it is obvious to those skilled in the art that various modifications and variations are possible within the scope of the technical spirit of the present invention, and if such modifications and variations fall within the scope of the appended claims, the technical spirit thereof should also be considered to be within the scope of the present invention. Explanation of the symbols

[0092] 100: Container body 102: Neck 110: Storage space 200: Cap member 210: Outer Cap 220: Inner Cap 222: Barrier 222a: Inner cap undercut 250: Button 252: Nozzle 300: Pumping means 310: Housing 311: Outer projection 311a: Upper pressure protrusion 312: First space 314: Inlet hole 316: Lower hole 318: Pipe 318a: Lower extension 318b: Lower pressure protrusion 318c: Lower pressure protrusion 320: Cylinder 322: Third space section 323: Cylinder undercut 324: Recess 330: Valve member 332: Seal Cap 334: Guide Rod 336: Stem 336a: Second space 336b: Stem hole 338: Close-fitting guide 340: 1st separation part 342: 2nd separation part 350: Undercap 352: Undercap undercut 354: Connection guide part 360: Pressurized space part 362: Pumping stroke 364: Stem stroke 370: Elastic recovery unit 380: Check valve 400: Deep Tube 500: Expansion pressurization part 501: Upper coupling guide part 502: Side wall opening 504: Lower coupling guide

Claims

Claim 1 A container body having a receiving space for receiving contents; a cap member coupled to the upper side of the container body; a button provided on the upper side of the cap member; a dip tube for guiding the contents of the receiving space; a pumping means connected to the dip tube and discharges the contents of the receiving space to the outside in conjunction with the operation of the button; and an expansion pressurizing part provided inside the container body and having a variable volume as air is introduced, wherein air is introduced into the interior of the expansion pressurizing part according to a pressure change caused by the operation of the pumping means, and the expansion pressurizing part expands from the upper side to the lower side inside the container body, and the pumping means comprises: a housing formed to be inserted into the upper side of the container body, having the dip tube connected to the lower side and a first space formed inside; and a cylinder installed to be vertically movable inside the housing, having the button connected to the upper side and a third space formed inside. A cosmetic container having an expansion pressurizing part for pressurizing contents, comprising a valve member for controlling the flow of contents guided from the deep tube through the first space to the third space, wherein a pressurized space for accommodating air is formed between the housing and the cylinder, an inlet hole is formed on one side of the housing in communication with the pressurized space, and the expansion pressurizing part is extended to cover the inlet hole and communicates with the inlet hole, wherein as the cylinder moves, air in the pressurized space flows into the expansion pressurizing part through the inlet hole. Claim 2 delete Claim 3 A cosmetic container having an expansion pressurizing part for pressurizing contents, wherein, in claim 1, the valve member moves along the cylinder and selectively opens and closes the inlet hole. Claim 4 A cosmetic container having an expansion pressurizing part for pressurizing contents, characterized in that, in paragraph 3, the valve member is installed to be movable up and down along the lower side of the cylinder, and in the original position before the cylinder descends, the valve member is positioned to block the inlet hole so that the pressurized space part and the inlet hole are not in communication, and when the cylinder descends, the valve member moves downward toward the inlet hole so that the pressurized space part and the inlet hole are in communication, and when the cylinder rises, the valve member rises and the pressure in the pressurized space part increases, so that air in the pressurized space part flows into the expansion pressurizing part through the inlet hole. Claim 5 A cosmetic container having an expansion pressurizing part for pressurizing contents, characterized in that, in claim 4, a concave portion is formed on the lower outer surface of the cylinder inserted into the upper inner side of the housing, an undercap is interposed in the space between the cylinder and the housing, a coupling guide portion is formed protruding in the direction of the concave portion on the lower side of the undercap located above the inlet hole, and the pressurizing space portion is divided into a pumping stroke formed between the concave portion and the undercap and a stem stroke formed between the coupling guide portion and the valve member based on the coupling guide portion, and when the cylinder descends, air from the pumping stroke passes through the coupling guide portion and moves to the stem stroke, and when the cylinder ascends, air from the stem stroke flows into the expansion pressurizing part through the inlet hole. Claim 6 A cosmetic container having an expansion pressurizing part for pressurizing contents according to claim 1, wherein the upper side of the expansion pressurizing part is disposed on the upper side of the interior of the container body and a side wall opening is formed in the direction of the inlet hole, and the lower side of the expansion pressurizing part is extended in the direction of the lower side of the housing, and when air from the pressurizing space part flows into the expansion pressurizing part through the inlet hole and the side wall opening, the side between the upper and lower sides of the expansion pressurizing part expands from the upper side to the lower side of the interior of the container body, thereby lowering the contents contained in the upper side of the container body and guiding the contents contained in the receiving space to move toward the dip tube. Claim 7 A cosmetic container having an expansion pressurizing part for pressurizing contents according to claim 1, further comprising: an outer protrusion formed extending outwardly on the upper side of the housing to face the upper side of the container body; a pipe formed extending downwardly on the lower side of the housing to insert the dip tube; an upper coupling guide formed extending on the upper side of the expansion pressurizing part to be inserted between the upper side of the housing and the upper side of the container body; and a lower coupling guide formed extending on the lower side of the expansion pressurizing part to be inserted between the pipe and the dip tube. Claim 8 A cosmetic container having an expansion pressurizing member for pressurizing contents, wherein, in paragraph 3, the valve member comprises: a seal cap inserted into the housing so as to be positioned at the lower part of the cylinder; a stem having a second space formed therein that communicates with the upper part of the third space and extends so as to be inserted into the lower part of the third space and the lower part exposed to the first space, and a guide rod having a contact guide formed at the lower part of the stem, wherein a stem hole communicating with the first space is formed on the lower side of the second space, and the stem hole is configured to be selectively opened or closed by the seal cap depending on whether the contact guide contacts the seal cap.

Images