Pump for cosmetic container

Abstract

The present invention provides a pump for a cosmetic container, the pump comprising: a cylinder in which a space having a certain cross-section is formed to accommodate liquid contents; a piston that fits inside the cylinder and reciprocates in the cylinder according to an operation; a nozzle, in the form of a connection tube that passes through the piston and extends above the pump, for discharging the contents in the cylinder to the outside; a suction tube that extends from an end portion of the cylinder to the bottom surface of the container so that the contents accommodated in the container flow into the cylinder; a spring that returns the piston, which has been moved forward in the cylinder by a pressing operation of the nozzle, to the initial position so that the contents accommodated in the container flow along the suction tube and into the cylinder; and a check valve for preventing backflow of the contents accommodated in the cylinder.

Description

Pump for cosmetic containers

[0001] The present invention relates to a pump for a cosmetic container, and more particularly, to a pump for a cosmetic container in which an elastic member for restoration of the pump is formed of synthetic resin, facilitating recycling of waste plastic. Furthermore, the present invention relates to a pump for a cosmetic container that can operate even when the container is turned upside down to completely withdraw its contents.

[0002] Containers containing fluid-type daily necessities widely used in daily life are equipped with a small, hand-operated pump, so that the contents are dispensed in fixed amounts simply by pressing the pump, making them easy to use. This pump device is called a "dispenser." When the pump is pressed, the contents contained in the chamber inside the pump are dispensed out through the nozzle. When the pressure on the pump is removed, the pump returns to its original upward position due to the elastic force of the spring installed between the container and the pump, and the contents inside the container are sucked into the chamber inside the pump.

[0003] Dispensers like these are widely used on cosmetic containers, allowing for convenient dispensing of a set amount of the contents. In the past, caps were used, each covered with a regular lid and featuring a discharge outlet. However, this often resulted in inconveniences, such as the need to pressurize the container. Today, dispensers are installed on most shampoo containers due to their structural advantages: they facilitate dispensing and prevent excessive dispensing, thus preventing waste.

[0004] There is a conventional dispenser (100) (registered utility model 20-0428943) manufactured for the purpose described. Referring to FIG. 1, it includes a container (20) containing liquid therein, a housing (22) formed downwardly and fixed to the opening side of the container (20), and having a negative pressure hole, a hollow shaft (23) that moves up and down in the housing (22) by the user's pressing, a piston (24) that is connected to the lower portion of the shaft (23) and pressurizes or depressurizes the inside of the housing (22), a nozzle head (31) that is fixed to the upper portion of the shaft (23) while communicating with the shaft (23), and a chaflet (26) that is fixed to the upper end of the housing (22) and positioned between the housing (22) and the shaft (23), and a spring (25) that is positioned inside the housing (22) and has an upper end that contacts the lower end of the piston (24), and an exhaust hole that ensures the inflow and outflow of air is formed between the shaft (23) and the chaflet (26).

[0005] Since the contents must be drawn up from the end of the tube (30), that is, the lowest end, when pumping, the conventional dispenser not only has low pumping power but also has a high probability of poor pumping. In particular, when the viscosity of the contents is high, further pumping is not performed, which reduces the discharge power of the contents and makes it difficult to press the button. In addition, since the steel spring (25) is built into the housing (22), it is always in contact with the liquid inside the container, so there is a risk of the liquid deteriorating due to corrosion of the spring (25). In addition, since the parts that make up the dispenser are excessive, the manufacturing cost is high. In addition, since the steel spring and the plastic are assembled together, there is a problem in that the dispenser cannot be recycled when discarded.

[0006] The present invention aims to provide a pump for a cosmetic container in which an elastic member for restoration of the pump is formed of a synthetic resin material so that it can be easily recycled from waste plastic, and a pump for a cosmetic container that can operate even when the container is turned over to completely withdraw the contents.

[0007] According to one embodiment of the present invention for solving the above-described problem, a pump for a cosmetic container comprises: a cylinder having a space of a predetermined cross-section for containing liquid contents; a piston fitted to the inside of the cylinder and reciprocating the cylinder according to an operation; a nozzle in the form of a connecting pipe extending upwardly from the pump while passing through the piston for discharging contents inside the cylinder to the outside; a suction pipe extending from an end of the cylinder to a bottom surface of the container so that contents contained in the container are introduced into the cylinder; a spring for returning the piston, which has advanced in the cylinder, to an initial position by a pressing operation of the nozzle, so that contents contained in the container are introduced into the cylinder along the suction pipe; and a check valve for preventing backflow of contents contained in the cylinder.

[0008] At this time, the spring includes an upper plate having two or more protruding branches at regular intervals that are in contact with the inner surface of the cylinder in a convexly curved shape; and a lower plate having a shape symmetrical to the upper plate so that the shape combined with the upper plate has an abacus bead shape, and may be in a form in which a plurality of the upper plates and the lower plates are alternately laminated.

[0009] At this time, the upper plate may have a first through hole in the central portion, and the lower plate may have a second through hole protruding from the plate surface to be coupled to the first through hole in the central portion.

[0010] At this time, the cylinder may be provided with a guide groove formed in the length direction of the cylinder corresponding to the width of the protruding branch to guide the movement of the spring on the inner surface.

[0011] At this time, the device further includes an extension cylinder disposed between the end of the cylinder and the suction pipe; a piston extension rod in the form of a tube extending from the lower side of the piston and extending the nozzle through the first through hole and the second through hole to the extension cylinder; and a piston head disposed at the end of the piston extension rod, wherein the check valve may be disposed at a position where the extension cylinder and the suction pipe are connected.

[0012] Meanwhile, the cylinder may further include a piston adjuster for changing the position of the piston, and the cylinder may have a first inlet hole for introducing contents into the cylinder on the upper side of the cylinder based on the standing direction of the container.

[0013] At this time, the piston regulator can adjust the separation position of the piston so that the piston is placed in a first position where the piston blocks the first inlet port while the piston is separated, and in a second position where the piston is placed further apart from the position of the first inlet port while the piston is separated.

[0014] At this time, the piston has a second inlet hole on the side for introducing contents into the cylinder, and the piston regulator can rotate the piston so that the first inlet hole and the second inlet hole are positioned at a second angle, which is an angle at which the first inlet hole and the second inlet hole are in communication with each other, at a first angle, which is an angle at which the first inlet hole and the second inlet hole are misaligned.

[0015] On the other hand, the pump for a cosmetic container is further provided with a fixing member that fixes the pump to the bottle inlet of the container and serves as a lid, the fixing member is in close contact with the outer surface of the cylinder and includes a cylinder receiving part having a third inlet hole on the side for introducing contents into the cylinder, and the piston controller can rotate the cylinder so that the first inlet hole and the third inlet hole are positioned at a first angle that is an angle at which the first inlet hole and the third inlet hole are misaligned, and at a second angle that is an angle at which the first inlet hole and the third inlet hole are in communication with each other.

[0016] According to the pump for a cosmetic container according to the present invention,

[0017] First, the spring is made of synthetic resin material, which increases the recyclability of cosmetic containers.

[0018] Second, the container can be turned over to expel all the contents inside the container.

[0019] Figure 1 is a cross-sectional view of a container to which a conventional pump is applied.

[0020] Fig. 2 is a cross-sectional view of a container to which a pump for a cosmetic container according to the first embodiment of the present invention is applied.

[0021] Figure 3 illustrates a spring made of synthetic resin material applied to the present invention.

[0022] Figure 4 shows the form of a spring that can be implemented.

[0023] Fig. 5 is a cross-sectional view of a container to which a pump for a cosmetic container according to the second embodiment of the present invention is applied.

[0024] Fig. 6 is a cross-sectional view of a container to which a pump for a cosmetic container according to a third embodiment of the present invention is applied.

[0025] FIG. 7 and FIG. 8 are cross-sectional views of a container to which a pump for a cosmetic container according to the fourth embodiment of the present invention is applied.

[0026] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Please note that, where possible, identical components are represented by identical reference numerals throughout the drawings. Furthermore, detailed descriptions of well-known functions and structures that may obscure the gist of the present invention will be omitted. For the same reason, some components in the attached drawings are exaggerated, omitted, or schematically illustrated. Furthermore, the pump for a cosmetic container of the present invention is not limited to cosmetics, and can be applied to containers for shampoos, detergents, disinfectants, beverage additives, and the like.

[0027] FIG. 2 is a cross-sectional view of a container to which a pump for a cosmetic container according to a first embodiment of the present invention is applied, FIG. 3 is a drawing explaining a spring made of synthetic resin material applied to the present invention, and FIG. 4 is a cross-sectional view of a container to which a pump for a cosmetic container according to a second embodiment of the present invention is applied.

[0028] A pump (1000) for a cosmetic container according to a first embodiment of the present invention includes a cylinder (100), a piston (200), a nozzle (300), a suction pipe (400), a spring (500), and a check valve (V), and a pump (1000') for a cosmetic container according to a second embodiment further includes an extension cylinder (600), a piston extension rod (700), and a piston head (800) in the first embodiment.

[0029] First, referring to FIG. 2, the first embodiment, which is the basic form of the present invention, will be described.

[0030] The cylinder (100) has a space of a certain cross-section to accommodate liquid contents (i.e., cosmetics). Since the pump (1000) for the cosmetic container is screw-coupled to the bottle inlet of the cosmetic container (B), the cylinder (100) is generally implemented in a cylindrical shape. However, the cross-section of the cylinder (100) does not necessarily have to be cylindrical. It may be implemented in an oval or polygonal cross-section with rounded corners to match the shape of the spring (500) made of synthetic resin material described later.

[0031] The piston (200) is fitted inside the cylinder (100) and moves back and forth in the cylinder (100) according to the operation. The piston (200) applies pressure to the contents according to the operation and discharges them to the outside of the container. The cross-section of the piston (200) has a shape that matches the cross-section of the cylinder (100) and also has a shape that is airtight so that the contents do not leak.

[0032] The nozzle (300) is a connecting tube-shaped device that passes through the piston (200) and extends upward from the pump (1000) to discharge the contents inside the cylinder (100) to the outside.

[0033] The nozzle (300) includes a shaft (310) and a nozzle head (320) that pass through the piston (200) and extend upward from the pump (1000). When a user applies pressure to the nozzle head (320), the piston (200) is lowered by the connected shaft (310), and pressure is applied inside the cylinder (100), so that the contents pass through the passage of the shaft (310) and the nozzle head (320) and are discharged to the outside.

[0034] The suction pipe (400) extends from the end of the cylinder (100) to the bottom surface of the container (B) so that the contents contained in the container (B) are introduced into the interior of the cylinder (100).

[0035] The spring (500) returns the piston (200) that has advanced in the cylinder by the pressing operation of the nozzle (300) to its initial position, so that the contents (Q) contained in the container (B) are introduced into the cylinder (100) along the suction pipe (400).

[0036] The check valve (V) prevents the contents (Q) contained in the cylinder (100) from flowing back when the nozzle (300) is pressurized. That is, it prevents the contents (Q) from flowing back to the container (B) along the suction pipe (400).

[0037] The spring (500) will be described with reference to Fig. 3.

[0038] The spring (500) applied to the present invention is formed of a synthetic resin material, includes an upper plate (510) and a lower plate (520), and has a form in which a plurality of upper plates (510) and a plurality of lower plates (520) are alternately laminated.

[0039] The top plate (510) has a convexly curved shape and has two to four protruding branches (511) at regular intervals that contact the inner surface of the cylinder (100).

[0040] The lower plate (520) has a shape symmetrical to the upper plate (510) so that the shape combined with the upper plate (510) has an abacus bead shape. That is, the lower plate (520) also has a convexly curved shape and has two to four protruding branches (521) at regular intervals that contact the inner surface of the cylinder (100). The protruding branches (511, 521) are not limited to a rectangular shape and may be implemented in shapes other than those shown for the sake of required elasticity and convenience of manufacturing / joining.

[0041] In the illustrated example, the length of the protruding branch (521) of the lower plate (520) is short so that the end of the protruding branch (521) touches just below the end of the protruding branch (511) of the upper plate (510), but this is only one of the possible forms, and for the convenience of manufacturing, the lower plate (520) may be implemented in a form completely identical to the upper plate (510). That is, one upper plate (510) can be turned over and used as the lower plate (520).

[0042] Meanwhile, the upper plate (510) has a first through hole (512) in the central portion. The first through hole (512) is intended for laminated bonding with the lower plate (520) laminated on top.

[0043] The lower plate (520) has a second through hole (522) in the central portion, and the second through hole (522) has a protruding shape and is fitted into the first through hole (512) of the adjacent upper plate (510). The protruding portion of the second through hole (522) is joined to the first through hole (512) by a forced fit method utilizing the elasticity of the material.

[0044] The first through hole (512) and the second through hole (522) serve the purpose of allowing the piston extension rod (700) to pass through. The shape of the through hole is not limited to a circle and may be implemented in various shapes such as polygons and shapes.

[0045] The cylinder (100) has a guide groove (110) corresponding to the width of the protruding branches (511, 521) on the inner surface to guide the movement of the spring (500). The guide groove (110) is formed in the longitudinal direction of the cylinder (100). Since the guide groove (110) guides the protruding branches (511, 521), it is possible to prevent the protruding branches (511, 521) from being misaligned with each other depending on the use of the spring (500).

[0046] In order to facilitate the insertion of the spring (500) into the guide groove (110), it is preferable that the upper end of the guide groove (110) be shaped like a triangular funnel with an extended end. Upon insertion, the upper and lower plates (510, 520) forming the spring (500) are aligned.

[0047] Next, a second embodiment of the present invention will be described with reference to FIG. 5. This embodiment is an embodiment that further includes an extension cylinder (600), a piston extension rod (700), and a piston head (800) from the first embodiment.

[0048] According to the first embodiment (1000), the contents (Q) may affect the operation of the spring (500). For example, if the viscosity of the contents (Q) is high, the force with which the spring (500) returns may be reduced, and thus, the pumping of the contents (Q) may not be performed smoothly.

[0049] In the second embodiment (1000'), the pumping of the contents (Q) is performed in an extension cylinder (600), so that the contents (Q) do not come into contact with the spring (500).

[0050] An extension cylinder (600) is placed between the lower end of the cylinder (100) and the suction pipe (400).

[0051] The piston extension rod (700) is a tubular shape extending from the lower side of the piston (200), and extends the nozzle (300) to the extension cylinder (600) through the first through hole (512) and the second through hole (522). It is preferable that the piston extension rod (700) have a diameter that provides clearance for the first through hole (512) and the second through hole (522) so that the spring (500) can operate smoothly.

[0052] The piston head (800) is arranged at the end of the piston extension rod (700) and serves as the piston (200) in the first embodiment.

[0053] A check valve (V) is placed at a location where the extension cylinder (600) and the suction pipe (400) are connected.

[0054] In order to prevent the contents (Q) from flowing into the part where the spring (500) is located, a packing (610) for sealing the cylinder (100) may be further provided at the part where the extension cylinder (600) is fitted to the lower end of the cylinder (100).

[0055] Fig. 6 is a cross-sectional view of a container to which a pump for a cosmetic container according to a third embodiment of the present invention is applied, and Figs. 7 and 8 are cross-sectional views of a container to which a pump for a cosmetic container according to a fourth embodiment of the present invention is applied.

[0056] The third and fourth embodiments are embodiments in which, when the contents (Q) in the cosmetic container (B) are almost exhausted and the contents (Q) can no longer be withdrawn due to the gap between the suction tube (400) and the bottom surface of the container (B) while the container (B) is standing up, the container (B) can be turned over to pump out all the remaining contents.

[0057] The third and fourth embodiments further include a piston regulator (900) from the first or second embodiment, respectively.

[0058] The third and fourth embodiments further disclose additional structures for the cylinder (100) and piston (200). However, the spring (500) may be implemented as a conventional metal material rather than the type disclosed in the first or second embodiment.

[0059] First, a pump (1000'') for a cosmetic container of the third embodiment will be described. In Fig. 6, the spring (500) is omitted for convenience of identification.

[0060] The piston adjuster (900) changes the position of the piston (200) in the cylinder (100) according to the user's operation.

[0061] The piston (200) is pressed against the upper portion of the cylinder (100) based on the standing direction of the container (B) by the elasticity of the spring (500). To facilitate understanding, the position of the piston (200) will be described as a 'spaced position'.

[0062] A pump (1000'') for a cosmetic container is fixed to the bottle inlet of the container (B), and a piston regulator (900) is connected to a fixing member (T) that functions as a lid, using a screw thread or a force-fit method. The 'distance position' of the piston (200) is adjusted through rotational operation of the piston regulator (900).

[0063] The cylinder (100') is provided with a first inlet hole (120) for introducing contents (Q) into the cylinder on the upper side of the cylinder (100') based on the standing direction of the container.

[0064] The piston regulator (900) adjusts the position of the piston (200) so that the piston (200) is placed in a first position (P1) where the piston (200) blocks the first inlet (120) while the piston (200') is spaced apart, and a second position (P2) where the piston (200) is spaced apart and further apart than the position of the first inlet (120).

[0065] That is, the second position (P2) is the position where the piston (200) rises further and the first inlet port (120) is opened, and the first position (P1) is the position where the first inlet port (120) is closed (blocked). In order to prevent the contents (Q) from flowing into the interior of the cylinder (100') and flowing out of the container (B) through the nozzle (300) during the manufacturing and distribution process, it is preferable that the piston regulator (900) be positioned at the first position (P1) when the cosmetic container (B) is shipped.

[0066] When a user uses a cosmetic container (B) and the remaining content (Q) becomes low, the user operates the piston controller (900) to position the piston (200') at the second position (P2). For example, when the piston controller (900) is moved from the first position (P1) to the second position (P2) by pulling it out or rotating it, the piston (200) is pushed up by the force of the spring (500) and placed at the second position (P2).

[0067] Thereafter, when the user turns over the cosmetic container (B) with the first inlet (120) open, the contents (Q) flow into the interior of the cylinder (100') by gravity. The check valve (V) applied to the present invention has a neutral state that allows for two-way ventilation when no pressure is applied.

[0068] In this state (i.e., the container is turned over and the contents (Q) are introduced into the cylinder (100;)), if pressure is applied to the nozzle (300), the remaining amount of the contents (Q) can be discharged.

[0069] The fourth embodiment of the present invention will be described with reference to FIGS. 7 and 8.

[0070] The fourth embodiment (1000''') is a method in which a piston regulator (900') rotates a piston (200') or a cylinder (100'') in an axial direction to adjust the first inlet hole (120) from a closed (blocked) position to an open position (open).

[0071] According to the implementation method, the present embodiment may further include a fixing member (T) that fixes the pump (1000''') for a cosmetic container to the bottle inlet of the container (B) and serves as a lid.

[0072] The fixed member (T) is in close contact with the outer surface of the cylinder (100'') and includes a cylinder receiving portion (Ta) having a third inlet hole (Tb) on the side for introducing contents into the cylinder (100''). The cylinder (100'') has a first inlet hole (110) on the side of the upper portion of the cylinder (100'') based on the standing direction of the container (B) for introducing contents (Q) into the cylinder.

[0073] In FIGS. 7 and 8, the position of the first inlet hole (110) is shown in the middle part of the cylinder (100''), but this is an exaggerated illustration for easy identification, and in actual implementation, the first inlet hole (110) is located on the upper side of the cylinder.

[0074] The fourth embodiment (1000'') can be implemented in two detailed embodiments. One is a method in which the piston regulator (900') rotates the cylinder (100'') to align the first inlet hole (110) and the third inlet hole (Tb) (Fig. 7), and the other is an embodiment in which the fixed member (T) does not have a cylinder receiving portion (Ta), and the regulator (900') rotates the piston (200'') to align the second inlet hole (221) provided on the side of the piston (200'') and the eleventh inlet hole (110).

[0075] That is, as illustrated in FIG. 8, the piston regulator (900') is implemented in a manner (piston rotation method) in which the piston (200'') is rotated so that the first inlet hole (110) and the second inlet hole (221) are positioned at a first angle (A1) at which the first inlet hole (110) and the second inlet hole (221) are misaligned, and at a second angle (A2) at which the first inlet hole (110) and the second inlet hole (221) are in communication with each other. In FIG. 8, the spring (500) is omitted for simplicity.

[0076] As described in FIG. 7, the piston regulator (900') can be implemented in a manner (cylinder rotation manner) of rotating the cylinder (100'') so that the first inlet hole (110) and the third inlet hole (Tb) are positioned at a first angle (A1) at which the first inlet hole (110) and the third inlet hole (Tb) are misaligned, and at a second angle (A2) at which the first inlet hole (110) and the third inlet hole (Tb) are in communication with each other.

[0077] Meanwhile, according to the fourth embodiment (1000'''), the piston (200'') may have a protruding piston surface to form a second inlet hole (221). The second inlet hole (221) is arranged on the side of the piston protrusion end (220), and the spring (500) is implemented in a form inserted into the protrusion end (220). In order to increase the discharge pressure, the spring (500) may be divided into two stages and a second check valve (V') may be further arranged in the middle portion.

[0078] The embodiments of the present invention disclosed in this specification and drawings are merely specific examples intended to facilitate easy explanation of the technical content of the present invention and aid understanding thereof, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that other modifications based on the technical concepts of the present invention are possible in addition to the embodiments disclosed herein.

Claims

1. A cylinder that forms a space of a certain cross-section to accommodate liquid contents; A piston that is fitted into the inside of the cylinder and moves back and forth around the cylinder according to operation; A nozzle in the form of a connecting tube that passes through the piston and extends upwardly of the pump, and discharges the contents inside the cylinder to the outside; A suction pipe extending from the end of the cylinder to the bottom surface of the container so that the contents contained in the container are introduced into the interior of the cylinder; A spring that returns the piston, which has advanced in the cylinder by the pressing operation of the nozzle, to its initial position so that the contents contained in the container are introduced into the cylinder along the suction tube; and A pump for a cosmetic container including a check valve that prevents the contents contained in the cylinder from flowing back.

2. In claim 1, The above spring, A top plate having two or more protruding branches at regular intervals that contact the inner surface of the cylinder in a convexly curved shape; and A lower plate having a shape symmetrical to the upper plate so that the shape combined with the upper plate has an abacus bead shape, A pump for a cosmetic container, characterized in that a plurality of the upper plates and the lower plates are alternately stacked.

3. In claim 2, The above top plate, It has a first through hole in the central part, The above lower plate, A pump for a cosmetic container, characterized in that it has a second through hole protruding from the plate surface to be coupled to the first through hole in the central portion.

4. In claim 2, The above cylinder, A pump for a cosmetic container, characterized in that it has a guide groove formed in the length direction of the cylinder corresponding to the width of the protruding branch to guide the movement of the spring on the inner surface.

5. In claim 3, An extension cylinder disposed between the end of the cylinder and the suction pipe; A piston extension rod extending from the lower side of the piston in the form of a tube, extending the nozzle through the first through hole and the second through hole to the extension cylinder; and Further comprising a piston head disposed at the end of the piston extension rod, The above check valve, A pump for a cosmetic container, characterized in that it is arranged at a position where the extension cylinder and the suction pipe are connected.

6. In claim 1, Further comprising a piston adjuster for changing the position of the piston or the cylinder, The above cylinder, A pump for a cosmetic container, characterized in that it has a first inlet hole for introducing contents into the cylinder on the upper side of the cylinder based on the standing direction of the container.

7. In claim 6, The above piston regulator, A pump for a cosmetic container, characterized in that the piston is positioned so that the piston is positioned at a first position where the piston blocks the first inlet port while the piston is spaced apart, and at a second position where the piston is positioned further apart than the first inlet port while the piston is spaced apart.

8. In claim 6, The above piston, A second inlet hole is provided on the side for inlet of contents into the cylinder, The above piston regulator, A pump for a cosmetic container, characterized in that the piston is rotated so that the first inlet port and the second inlet port are positioned at a first angle, which is an angle at which the first inlet port and the second inlet port are misaligned, and at a second angle, which is an angle at which the first inlet port and the second inlet port are in communication with each other.

9. In claim 6, A pump for a cosmetic container is fixed to the bottle opening of the container and further includes a fixing member that serves as a lid. The above fixed member is, It is in close contact with the outer surface of the cylinder and includes a cylinder receiving portion having a third inlet hole on the side for introducing contents into the cylinder. The above piston regulator, A pump for a cosmetic container, characterized in that the cylinder is rotated so that the first inlet port and the third inlet port are positioned at a first angle, which is an angle at which the first inlet port and the third inlet port are misaligned, and at a second angle, which is an angle at which the first inlet port and the third inlet port are connected to each other.

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