Portable makeup liquid injection device having a pressure injection method

Abstract

To provide a portable cosmetic liquid spray device which can be used neatly without the leaking of liquid, has a simple structure, and has improved durability.SOLUTION: A portable cosmetic liquid spray device comprises: a spray device main body in which a compressor operated by means of a battery is embedded; and an upper unit including a liquid storage container, which is coupled to the top of the spray device main body and is for containing a liquid cosmetic product, a nozzle part, which uses pneumatic pressure generated by the compressor so as to spray the cosmetic product contained in the liquid storage container, and an upper case for covering the liquid storage container, wherein the nozzle part comprises: a spray tube body having a liquid inlet provided on the upper part thereof, and having, in the center thereof, a pipeline, which allows communication with the liquid inlet, provided in the transverse direction; a piston for selectively opening / closing the pipeline while performing piston movement in the horizontal direction in a state of being inserted into the pipeline of the spray tube body; an operation switch connected to the piston; and a nozzle cap of which the rear end is screw-coupled to the front end of the spray tube body so as to encompass the front end of the spray tube body, which uses the pneumatic pressure so that negative pressure is generated in the pipeline, and which has a liquid spray hole provided in the center part of the front end thereof.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a cosmetic liquid injection device, and more particularly to a portable cosmetic liquid injection device using a pressure injection method that can be used cleanly without tears, has a simple structure, and improved durability.

Background Art

[0002] Cosmetics used for beauty are directly applied to the skin, so they have a sensitive effect on skin health. Recently, there are many women who are troubled by skin problems due to environmental, dietary, or stress issues. Therefore, the importance of skin management has become even higher, and thus various types of cosmetics or skin protectants have been proposed on the market.

[0003] Recently, cosmetics that are in liquid form and aim to simultaneously obtain the effects of moisturizing, skin beautification, and skin health by being directly applied to the skin have been developed. Such liquid cosmetics are applied to the skin through a cosmetic liquid injection device that injects them onto the face in a fine particle state in order to enhance skin absorption.

[0004] Among cosmetic liquid injection devices, some have a built-in small compressor that generates pneumatic pressure. This helps to reduce the consumption of cosmetics by injecting them together with compressed air, and by atomizing them, it helps to enhance the usage effect of the cosmetics. In normal cases, liquid cosmetics containing active ingredients beneficial to health are supplied to the skin through such a cosmetic liquid injection device.

[0005] Conventional injection-type cosmetic supply devices had the inconvenience of generating one or two drops of tears during the use process. In particular, in order to draw out cosmetics from a sealed cosmetic capsule, air holes were provided, and a teardrop phenomenon occurred through these air holes. When tears of cosmetics occur, foreign substances may attach, the cosmetics may be consumed, or they may attach to other items in the handbag. Also, there was inconvenience in use because in some cases, they aggregated in droplets and were ejected like spitting.

[0006] As a compressed air type cosmetic liquid injection device, there is Korean Patent Application No. 10-2017-0023673. According to this, in many cases, it includes a cap that must be separated from the main body during use. In this case, there is an inconvenience in managing the cap. That is, there is an inconvenience in use that the cap must be separated each time it is used and the cap must be closed again after use.

[0007] In addition, since the conventional injection device is a method of pulling the pin-shaped nozzle backward to open the nozzle hole, there is a problem that the cosmetic liquid is ejected in the form of droplets at the time of use and the end point. That is, it could not be ejected in the form of fine particles, and there was a problem that it was ejected in an aggregated form like spitting saliva.

[0008] Thus, the conventional cosmetic liquid injection device had various inconveniences.

Summary of the Invention

Problems to be Solved by the Invention

[0009] In view of such problems, an object of the present invention is to provide an improved pressure injection type cosmetic liquid injection device. More specifically, there is no phenomenon of one or two drops of tear liquid occurring during the use process or the carrying process, and there is no separate cap covering the nozzle part, so there is no inconvenience of separating or coupling the cap, the durability is improved, and it is possible to maintain the particles of the cosmetic fine during use, etc. It is to provide a portable cosmetic liquid injection device of an improved pressure injection type in many aspects.

Means for Solving the Problems

[0010] Such an object includes an injection device main body having a compressor activated by a battery, and a liquid storage tank for storing a liquid cosmetic, which is coupled to the upper end of the injection device main body, and using the air pressure generated by the compressor, A nozzle unit that draws out the cosmetic stored in the liquid storage tank and sprays it in one direction, and an upper unit including an upper case for covering the liquid storage tank.

[0011] The nozzle part has a liquid inlet hole provided in the upper part, and in the center, there is an injection tube body with a pipeline provided horizontally and communicating with the liquid inlet hole, a piston that selectively opens and closes the pipeline while elastically performing a piston motion horizontally in a state of being inserted into the pipeline of the injection tube body, an operation switch connected to the piston,

[0012] and a nozzle cap whose rear end is screwed to the tip of the injection tube body so as to surround the tip of the injection tube body, generates a negative pressure in the pipeline using the air pressure generated by the compressor, and has a liquid injection hole provided in the center of the tip. It is achieved by a portable liquid cosmetic injection device characterized by including these components.

[0013] According to another feature of the present invention, the piston is provided with a piston head whose area expands, a piston seat is provided on the pipeline where the piston head can be seated, and the piston receives an elastic force in a direction in which the piston head is in close contact with the piston seat.

[0014] According to another feature of the present invention, a concave groove is provided along the circumferential direction in the middle part of the piston. One end of the piston is open toward the concave groove, and the other end is provided with a connection hole that is open toward the pipeline. An O-ring for waterproofing can be provided on the piston around the concave groove in the front and rear directions.

[0015] An upper case formed at the upper end of the injection device main body is covered in a cap shape. The upper case is opened while sliding vertically only within a certain section by a guide hook. The upper case is provided so as to block the liquid injection hole of the nozzle cap in the closed state and open the liquid injection hole in the raised and open state.

[0016] According to still another feature of the present invention, the liquid storage tank An air inlet hole is provided so that the cosmetic liquid can be smoothly ejected by preventing the generation of vacuum pressure during the ejection of the cosmetic liquid, a liquid discharge port through which the cosmetic liquid is discharged, and a pressure discharge pipe having one end connected to the air inlet hole and the other end extending into the liquid storage tank.

[0017] It is achieved by a portable cosmetic liquid spraying device, characterized in that a tear prevention pad for selectively opening and closing the air inlet hole is fixedly provided on the inner surface of the upper case.

Advantages of the Invention

[0018] According to such a configuration, there is no phenomenon of one or two drops of tear liquid being generated during the use process or the carrying process, and since there is no separate cap covering the nozzle part, there is no inconvenience of separating or combining the cap, and the manufacturing cost can be reduced due to simple assemblability, and a portable cosmetic liquid spraying device using a pressure spraying method that maintains the particles of the cosmetic fine during use and improves the usability is provided.

[0019] According to the present invention, since it is a method of selectively opening the pipeline by piston movement, a portable cosmetic liquid spraying device that can solve the problem of the cosmetic liquid being ejected in an aggregated state is provided.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

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Figure 8

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Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0021] Hereinafter, the specific content of the present invention will be described in detail with reference to FIGS. 1 to 8 of the accompanying drawings.

[0022] A portable cosmetic liquid injection device of a pressure injection type according to the present invention (hereinafter referred to as "cosmetic liquid injection device") includes an injection device main body 1 and an upper unit 3 coupled to the upper end of the injection device main body 1. A service unit 5 can be optionally added to the lower part of the injection device main body 1.

[0023] Inside the main body of the injection device, a rechargeable battery 7, a control circuit 9, and a compressor 11 are provided. The injection device main body 1 can be provided with a charging terminal for charging the battery. The compressor 11 is small-sized and generates compressed air to supply it to the nozzle portion. Such a configuration is not different from the conventional one.

[0024] The upper unit 3 is coupled to the upper part of the injection device main body 1. Screw coupling is possible, and one-touch coupling is also possible.

[0025] The upper unit 3 includes a liquid storage tank 13 for storing liquid cosmetics, a nozzle portion 15 that uses the air pressure generated by the compressor 11 to draw out the liquid cosmetics C stored in the liquid storage tank 13 and spray them in one direction, and an upper case 17 for covering and surrounding the liquid storage tank 13.

[0026] The liquid storage tank 13 has a funnel shape that is wider at the top and narrower at the bottom, and the drain port 13a is provided at its lowermost end, particularly on the bottom plate. A perspective window can be provided on the rear side wall of the liquid storage tank 13 so that the remaining amount of the contents can be confirmed.

[0027] The nozzle portion 15 includes an injection tube body 19, a piston 21, an operation switch 23, and a nozzle cap 25.

[0028] The injection tube body 19 is for providing a pipe line 27 that serves as a passage through which the liquid is discharged. A liquid inflow hole 19a into which the liquid discharged from the liquid storage tank 13 flows is provided at the upper rear part of the injection tube body. The pipe line 27 communicates with the liquid inflow hole 19a and is provided horizontally along the longitudinal direction of the injection tube body 19.

[0029] The piston 21 selectively opens and closes the pipe line while elastically performing a piston movement in the horizontal direction while being inserted into the pipe line 27 of the injection tube body.

[0030] The operation switch 29 is connected to the piston 21. The operation switch 29 can be provided integrally or in an assembled form at the rear end of the piston 21. The operation switch 29 can be provided so as to be exposed to the outside and can be locked so that it cannot operate when the upper case 17 is closed. For this purpose, an engagement groove 33 is provided in the operation switch, and the upper case 17 is engaged with this engagement groove 33 in the closed state, that is, the lowered state. In the open state of the upper case 17, that is, the raised state, the operation switch 23 can operate. By pressing the operation switch 23, the piston 21 opens the pipeline 27, and the compressor 11 starts to operate. The electric switches W1 and W2 can be interlocked with the operation switch 23.

[0031] The rear end of the nozzle cap 25 is screwed with the tip of the injection tube body so as to surround the tip 19b of the injection tube body. The nozzle cap 25 is conical.

[0032] The nozzle cap 25 is configured to generate a vacuum pressure in the pipeline 27 by the air pressure generated by the compressor 11. A liquid injection hole 25a, which serves as an outlet through which the cosmetic liquid is finally injected, is provided at the center of the tip of the nozzle cap 25.

[0033] Hereinafter, an embodiment in which the pipeline 27 is selectively opened and closed by the operation of the piston 21 will be described.

[0034] The piston 21 is provided with a piston head 35 whose area expands.

[0035] A piston seat 37 on which the piston head 35 can seat is provided on the pipeline 27. The piston 21 receives an elastic force in the direction in which the piston head 35 is in close contact with the piston seat 37. For this purpose, a coil spring 39 is provided, one end of which is directly or indirectly connected to the piston 21 and the other end of which is supported by the rear end of the injection tube body 19.

[0036] An O-ring 41 is provided at the stem 21a portion of the piston 21 to prevent the liquid from flowing out behind the injection pipe body 19.

[0037] As shown in the figure, the piston head 35 is similar to the head of a socket screw, but can be deformed into various forms.

[0038] Hereinafter, the liquid storage tank 13 according to an embodiment of the present invention and its installation structure will be described.

[0039] The liquid storage tank 13 includes an air inlet hole 53 provided so that the liquid cosmetic C can be smoothly ejected due to no vacuum pressure being generated during the ejection of the liquid cosmetic C, a liquid discharge port 13a through which the liquid cosmetic C is discharged, and a pressure discharge pipe 55 having one end connected to the air inlet hole 53 and the other end extending into the liquid storage tank 13.

[0040] And, a second tear prevention pad 57 for selectively opening and closing the air inlet hole 53 is fixedly provided on the inner surface of the upper case 17.

[0041] Hereinafter, the installation structure and operating state of the upper case 17 provided at the upper end of the injection device main body 1 will be mainly described with reference to FIG. 7.

[0042] The upper case 17 is in a cap shape and covers the periphery of the liquid storage tank 13. Guide hooks 47 project upward symmetrically from the injection device main body 1. A guide groove 47a is provided vertically long on the outer surface of the guide hook 47. A locking projection 49 projects from the lower part of the inner side wall of the upper case 17, and this locking projection 49 is inserted into the guide groove 47a. The upper case 17 can slide in the vertical direction in a section corresponding to the length of the guide groove 47a.

[0043] Magnet bodies M1, M2 can be provided at each part so that the closed upper case 17 can maintain the closed state and, once opened, can maintain the opened state.

[0044] The upper case 17 is provided such that it blocks the liquid injection hole 25a of the nozzle cap in the closed state and opens the liquid injection hole 25a in the raised and open state. And on the front inner surface of the upper case 17, a first tear prevention pad 51 is fixedly provided in front of the liquid injection hole 25a.

[0045] Hereinafter, another embodiment of the present invention will be described with reference to FIG. 6. According to this embodiment, a concave groove 43 is provided along the circumferential direction in the middle part of the piston 21'. Further, the piston 21' is provided with a connecting hole 45, one end of which opens toward the concave groove 43 and the other end of which opens toward the pipeline 27. O-rings 41, 41' for watertightness can be provided on the piston 21' in the front and rear directions with the concave groove 43 as the center. The pipeline 27 serves as a cylinder.

[0046] When the operation switch 23 is pressed, the concave groove 43 comes to be positioned directly below the liquid inflow hole 19a, and thus the liquid can flow out along the pipeline 27.

[0047] The upper case 17 is provided with an upper lid 29 that can be opened when replenishing the cosmetic liquid. This upper lid 29 is of a hinge type and can be easily opened and stably fixed by the magnet bodies M1, M2.

[0048] Hereinafter, still another embodiment of the present invention will be described with reference to FIG. 8.

[0049] This embodiment relates to the stopper 59 of the liquid storage tank. When replenishing the cosmetic liquid in the liquid storage tank, this stopper 59 is opened to open the liquid inlet 13b. When closing this stopper 59 after replenishing the cosmetic liquid, pressure is generated inside the liquid storage tank 13. This embodiment is for solving the problem that the cosmetic liquid is ejected drop by drop or two drops to the outside due to the pressure.

[0050] According to this embodiment, the stopper 59 is inserted into and fixed to the liquid inlet 13b. An air vent pin 61 is provided at the lower part of one end of the stopper 59. On the upper plate of the liquid storage tank 13, a liquid inlet 13b and an air vent hole 62 into which the air vent pin 61 is inserted are provided beside it. If the air vent pin 61 is inserted later during the process of inserting the stopper, air will be discharged outside the liquid storage tank 13 through the air vent hole 62. Therefore, the pressure in the liquid storage tank 13 does not increase. As a result, the possibility that the liquid is ejected through the nozzle portion 15 becomes extremely low.

[0051] Hereinafter, still other embodiments of the present invention will be described.

[0052] According to still other embodiments of the present invention, the structure in which the nozzle cap is coupled to the injection tube 19 is characterized. The coupling portion of the nozzle cap 25 is composed of a threaded portion 63 and a straight portion 65. The positional relationship between the tip of the injection tube of the nozzle cap 25 is very sensitive to the injection quality. According to the present invention, a configuration is provided such that the nozzle cap 25 accurately aligns with the center of the injection tube 19. The straight portion 65 serves as a guide like a sleeve with a minimum tolerance and is coupled to the injection tube 19 so as to be located at the center point. In the case of screwing, there is an assembly error, but the straight portion 65 of this nozzle cap eliminates the assembly tolerance and plays a role in maintaining the particle state as good as the initial state even after long-term use. That is, it contributes to improving the durability of the device.

[0053] According to still other embodiments of the present invention, an infrared lamp 67 can be provided around the nozzle cap. By heating the cosmetic liquid, when applied to the skin, the cold feeling can be eliminated, and it serves to supply infrared rays to the skin and double the effect of the cosmetic liquid. The infrared lamp 67 is in a ring shape and can be provided so as to surround the outer periphery of the nozzle cap.

[0054] Hereinafter, other forms of the present invention will be described with reference to FIGS. 9 to 16.

[0055] The portable makeup liquid injection device using a pressure injection method according to the present invention (hereinafter referred to as the "makeup liquid injection device") includes an injection device main body 1 and an upper unit 3 coupled to the upper end of the injection device main body 1. A service unit 5 can be optionally added to the lower part of the injection device main body 1.

[0056] Inside the injection device main body, a rechargeable battery 7, a control circuit 9, and a pneumatic generation mechanism 11 are provided. The injection device main body 1 can be provided with a charging terminal for battery charging. The pneumatic generation mechanism 11 is a small compressor that generates compressed air and supplies it to the nozzle part.

[0057] Inside the injection device main body, a rechargeable battery 7, a control circuit 9, and a pneumatic generation mechanism 11 are provided. The injection device main body 1 can be provided with a charging terminal for battery charging. The pneumatic generation mechanism 11 is a small compressor, which generates compressed air and supplies it to the nozzle part.

[0058] An important feature of the present invention lies in the liquid storage tank 13. The liquid storage tank 13 includes a tank main body 16, an air inlet hole 39 provided on the upper plate 16-1 of the tank main body 16, and a pressure discharge pipe 20 provided inside it.

[0059] The air inlet hole 39 is provided so that no vacuum pressure is generated when the makeup liquid is ejected, enabling the makeup liquid to be ejected smoothly, and there is one such hole. The liquid discharge port 13a is a hole through which the makeup liquid is discharged, provided at the lower end of the tank main body 16 and connected to the nozzle 27.

[0060] The air inlet hole 39 and the liquid discharge port 13a are components that also exist in the prior art. A liquid inlet 16-2 is provided on the upper plate 16-1 of the tank main body 16, and a stopper 38 is inserted into this liquid inlet 16-2.

[0061] The pressure discharge pipe 20 has one end connected to the air inlet hole 39 and the other end extending into the interior of the tank body 16. For the connection of the pressure discharge pipe 20, a nipple protruding into the interior of the liquid storage tank can be provided at the air inlet hole 39 as shown in the figure. The method of attaching the pressure discharge pipe 20 can be diverse. The pressure discharge pipe 20 can also be joined so as to protrude slightly outside the tank body 16 and fixed with an adhesive.

[0062] According to an embodiment of the present invention, the pressure discharge pipe 20 can be attached in a "U" shape and have a length such that the bent portion contacts the upper surface of the bottom plate 16-3 of the tank body 16. The pressure discharge pipe 20 is provided in the liquid storage tank 13 in a diagonal shape, and the other end is provided so as to be close to the bottom surface of the upper plate 16-1 of the tank body 16. And, in order to prevent the pressure discharge pipe 20 from moving, the end portion of the pressure discharge pipe 20 can be fixed to a holder 20-1 provided on the inner wall of the tank body 16.

[0063] According to an embodiment of the present invention, the pressure discharge pipe 20 can also be provided so as to extend outside the liquid storage tank 13 for convenience of installation. The pressure discharge pipe 20 is in the form of a thin tube and can be made of silicon, rubber or other synthetic resins. The inner diameter of the pressure discharge pipe 20 can be, for example, 0.3 to 5 mm.

[0064] Ultimately, the core is that the lotion C cannot flow out of the tank body 16 through the pressure discharge pipe 20, and conversely, air can flow in. Air can flow in through a small-diameter pipeline as much as possible, but the lotion C cannot flow out through the pressure discharge pipe 20 unless pressure acts on the inside of the tank body 16 due to surface tension.

[0065] The length of the pressure discharge pipe 20 can be adjusted according to the situation. For example, as shown in FIG. 15, it can also be set to contact the bottom plate 16-3 of the tank body 16. When reducing the pipe diameter or when the viscosity of the lotion is high, the length of the pressure discharge pipe 20 can be reduced.

[0066] According to such a configuration, as shown in FIGS. 14(a) and (b) respectively, even when the liquid storage tank is lying horizontally or upside down, the cosmetic liquid C cannot flow out through the pressure discharge pipe 20 and into the air inlet hole 39. On the other hand, air can flow into the tank body 16 due to the negative pressure generated inside the tank body 16 during spraying.

[0067] Hereinafter, another embodiment of the present invention will be described. This embodiment relates to the upper unit 3. The upper unit 3 includes a liquid storage tank 13 for storing liquid cosmetics, and a nozzle unit 15 that uses the air pressure generated by the pneumatic generation mechanism 11 to draw out the liquid cosmetics stored in the liquid storage tank 13 and spray them in one direction.

[0068] Furthermore, the upper unit 3 includes an upper case 17, a nozzle cover switch 19, and a main operation switch 21. A plug cover 23 is provided at the upper end of the upper case 17, and a nozzle cover 25 that opens in a slide manner is provided in the front. The nozzle cover switch 19 is provided in the front of the upper case 17. The main operation switch 21 is provided at the rear of the upper case 17.

[0069] The plug cover 23 is provided on the upper case 17 so as to open while rotating in a hinge manner, and can be fixed to the horizontal plate 17a of the upper case by the magnetic force of a cover fixing magnet 22 provided inside the upper case 17. The cover fixing magnet 22 can be fixedly provided on the bottom surface of the horizontal plate 17a of the upper case, and the plug cover 23 can include a metal piece that is a magnetic body.

[0070] The liquid discharge port 13a of the liquid storage tank 13 is provided at its lowermost end so that all the liquid can be used up without leaving any residue. A perspective window 14 can be provided on the rear side wall of the liquid storage tank 13 to enable confirmation of the remaining amount of the contents.

[0071] On the rear side wall of the upper case 17, a transparent part 18 is provided at the same position as the viewing window 14 of the liquid storage tank 13. A plug cover 23 is provided at the upper end of the upper case 17, and a slide-type nozzle cover 25 that opens upward is provided at the front. The nozzle cover switch 19 is provided in front of the upper case 17 and blocks the ejection port of the nozzle 27. The main operation switch 21 is provided at the rear of the upper case 17 and operates the pneumatic generation mechanism 11 when pressed by a finger.

[0072] One end of the nozzle cover 25 is supported by the upper case 17, and the other end is elastically supported upward by a first spring 29 that is supported by the nozzle cover 25. The nozzle cover switch 19 and the nozzle cover 25 are configured to maintain a closed state by cover holding means. When the nozzle cover switch 19 is pressed, the cover holding means is released, and the nozzle cover 25 elastically slides upward and opens as shown in FIGS. 10 and 12. An absorption pad 31 having a thickness almost in contact with the tip of the nozzle 27 is adhered to the back surface of the nozzle cover 25. The absorption pad 31 is for absorbing the cosmetic liquid that can be ejected in a small amount by pressure during liquid replenishment.

[0073] The cover holding means includes a pair of cover magnets 33, 33'. The first cover magnet 33 is fixed to the lower end of the nozzle cover 25, and the second cover magnet 33' is provided at the upper end of the injection device main body 1. The magnetic force of the cover magnets 33, 33' is stronger than the elastic force of the first spring 29. Thereby, the nozzle cover 25 can be maintained in a closed state. When the nozzle cover switch 19 is pushed horizontally, the cover magnets 33, 33' are displaced from each other and the magnetic force is reduced, so that the nozzle cover 25 elastically slides upward by the first spring 29. The nozzle cover switch 19 operates elastically in the lateral direction by a second spring 35. When the nozzle cover switch 19 returns to its original state and the nozzle cover 25 is pushed downward, the cover magnets 33, 33' stick together again, and the nozzle cover 25 is maintained in a closed state.

[0074] Optionally, locking means can be further provided to prevent the nozzle cover switch 19 from being accidentally pressed. For example, a method can be adopted such that the nozzle cover switch 19 can be pressed after the user slightly pushes it upward.

[0075] According to an embodiment of the present invention, a locking switch as a B-contact switch is further provided to prevent the main operation switch 21 from operating when the nozzle cover 25 is closed. As shown in FIG. 10, the locking switch can include a first signal magnet 37 provided at the lower end of the nozzle cover 25 and a second signal magnet 37' provided on the injection device body 1. According to this, the main operation switch 21 functions only when the nozzle cover 25 is open.

[0076] According to the illustration, when the first signal magnet 37 and the second signal magnet 37' are separated, the main operation switch 21 is configured to function.

[0077] However, instead of the first signal magnet 37 and the second signal magnet 37', a third signal magnet 75 and a third signal magnet 75' can be selectively provided such that the main operation switch 21 operates by releasing the locking function when the nozzle cover 25 is fully open. As shown in FIGS. 11 and 12, the third signal magnet 75 and the third signal magnet 75' can be respectively provided on the upper surface of the stopper 43 and the bottom surface of the plug cover 23. FIG. 12 shows a state where the third signal magnet 75 and the third signal magnet 75' are attached to enable the main operation switch 21 to function.

[0078] The plug cover 23 is basically provided for replenishing the makeup liquid C in the liquid storage tank 13. The plug cover 23 is closed as shown by the solid line in FIGS. 9 and 11 during use and can be opened as shown by the dashed-dotted line during liquid replenishment.

[0079] At the upper end of the liquid storage tank 13, a stopper 38 made of an elastic material such as rubber or silicon is coupled. After the user separates this stopper 38, the cosmetic liquid can be replenished.

[0080] Since the cosmetic liquid should be easily ejected only when air can flow into the liquid storage tank 13 while the cosmetic liquid C is being ejected through the nozzle portion 15, an air inlet hole 39 is provided in the liquid storage tank 13.

[0081] According to still another feature of the present invention, it includes cover opening restriction means for allowing the stopper cover 23 to open only when the nozzle cover 25 is closed. The cover opening restriction means includes a stopper cover 23 that opens in a hinge manner about a hinge shaft 41, and a stopper 43 protruding from the inner surface of the nozzle cover 25. As shown in FIGS. 10 and 12, when the nozzle cover 25 is slid open, the stopper 43 supports one side bottom surface of the stopper cover 23, preventing the stopper cover 23 from rotating in a hinge manner.

[0082] The main operation switch 21 is elastically supported by a third spring 45. The main operation switch 21 includes second signal magnets 47, 47' that become A contacts. The second signal magnets 47, 47' can be provided at the lower end of the main operation switch 21 and the upper end of the injection device main body 1. When the main operation switch 21 is pressed, the second signal magnets 47, 47' act as contacts of the switch with each other, generating a signal for operating the pneumatic generation mechanism 11.

[0083] Hereinafter, the nozzle portion 15 will be mainly described with reference to FIGS. 11 to 13.

[0084] At the lowermost end of the liquid storage tank 13, a nozzle seating portion 49 is provided at a position where a drain port 13a is provided, and a pair of first O-rings 51 are inserted therein. A spray pipe 55 is connected to the nozzle base 53. A first filter membrane 57 is interposed between the first O-rings 51. The first filter membrane 57 is made of a graphene material and serves to block the passage of tears under normal temperature and atmospheric pressure conditions. And the first filter membrane 57 has fine through-holes to such an extent that the cosmetic liquid can pass through when pressure acts thereon.

[0085] The first filter membrane 57 may be made of a graphene material having fine through-holes of 10 to 50 μm.

[0086] The nozzle 27 includes a pin-shaped nozzle head 59, a housing 61 fixed so as to surround the periphery of the nozzle head 59, and a nozzle installation portion 63 for fixing the nozzle head 59 in a state of being coupled to the spray pipe 55. The housing 61 is screwed to the nozzle installation portion 63. The tip 59a of the nozzle head 59 is sharp, and a hole 59b serving as a path through which the liquid is ejected is provided at the center thereof.

[0087] The nozzle head 59 is fitted to the peripheral edge of the spray pipe 55, and a pair of second O-rings 65 and a second filter membrane 67 are interposed therebetween. The second filter membrane 67 is a thin film of a graphene material, similar to the first filter membrane 57, and is a means for preventing tears under atmospheric pressure and normal temperature conditions and allowing the cosmetic liquid to pass through when pressure acts. The second O-rings 65 are provided on both sides of the second filter membrane 67, respectively.

[0088] The nozzle head 59 is insert-molded into the nozzle installation part 63. As shown in FIG. 13, the nozzle installation part 63 is screwed to the liquid storage tank 13. For this purpose, a screw pipe 69 is formed on the front surface of the liquid storage tank 13, and a screw fixing part 71 is provided on the nozzle installation part 63. On the other hand, the nozzle installation part 63 is provided with an air hole 73 for guiding the air pressure to flow into the space between the nozzle head 59 and the housing 61. The air hole 73 is provided at the center of the injection device main body 1 for the convenience of assembly.

[0089] The compressed air generated by the pneumatic generation mechanism 11 passes quickly through the space S between the nozzle head 59 and the housing 61, and reduces the pressure inside the nozzle head 59 by Bernoulli's theorem, so that the cosmetic liquid is sucked in. Eventually, the cosmetic liquid C passes through the second and third filter membranes 57 and 67 by negative pressure and is sprayed from the nozzle 27.

[0090] According to the present invention, on the air inlet hole 39 provided at the upper end of the liquid storage tank 13 and on the injection pipeline of the nozzle part, filter membranes 40, 57, and 67 are provided so that air can pass through, but liquid substances cannot pass through under normal temperature and atmospheric pressure conditions.

[0091] The filter membranes 40, 57, and 67 can have different sizes of fine through holes depending on the installation position, and have through holes with an average size of 10 to 50 μm. The graphene material can be used as the basic material of the filter membranes 40, 57, and 67, but is not limited thereto, and one of the second and third filter membranes 57 and 67 can also be omitted. Graphene is a carbon allotrope composed only of carbon atoms, and is a new thin film material having a honeycomb structure with a thickness of one carbon atom. The present invention uses this graphene.

[0092] Hereinafter, still other embodiments of the present invention will be described with reference to FIG. 16.

[0093] This embodiment relates to the stopper 38 of the liquid storage tank. When replenishing the liquid storage tank with cosmetic liquid, open this stopper 38 to open the liquid inlet 16-2. When closing this stopper 38 after replenishing the cosmetic liquid, pressure is generated inside the liquid storage tank 13. This embodiment is for solving the problem that the cosmetic liquid is ejected drop by drop or two drops at a time to the nozzle 27 due to the pressure.

[0094] According to this embodiment, an "L"-shaped air vent pipe 38-3 is provided inside the stopper 38. One end of the air vent pipe 38-3 is open to the lower end portion 38-2 of the stopper, and the other end is open to the upper end portion 38-1 of the stopper.

[0095] As shown in Fig. 16(a), during the process of closing the stopper, air is discharged outside the stopper through the air vent pipe 38-3. Therefore, the internal pressure of the tank body 16 does not increase. The air vent pipe 38-3 is closed only at the last moment of closing the stopper (see Fig. 16(b)). Therefore, the internal pressure of the tank body 16 stops at an extremely minute level during the process of opening and closing the stopper. As a result, the possibility that the liquid is ejected through the nozzle 27 becomes extremely low.

Industrial Applicability

[0096] The present invention proposes a portable cosmetic liquid injection device of a pressure injection type that can be used cleanly without tears, has a simple structure, and improved durability.

[0097] According to an embodiment of the present invention, a service unit 5 can be further coupled to the lower end of the injection device main body 1. By the service unit 5, a lamp, a galvanic massager, an LED lamp for skin beauty, a vibration massager, etc. can be provided. These are convenience appliances or beauty appliances using the power of the battery 7. The service unit 5 can be connected to the injection device main body in various ways.

[0098] The configurations illustrated and described above are merely preferred embodiments based on the technical idea of the present invention. Those skilled in the art should be able to make various modifications based on ordinary technical common sense, but it should be noted that this is included in the protection scope of the present invention.

[0099] The embodiments disclosed above can be combined in various ways, and all possible combinations are within the scope of the rights of the present invention.

Explanation of Reference Numerals

[0100] 1 Injection device main body 3 Upper unit 5 Service unit 7 Battery 9 Control circuit 11 Compressor 13 Liquid storage tank 15 Nozzle part 17 Upper case 19 Nozzle cover switch C Cosmetic liquid

Claims

1. The device includes a sprayer body incorporating an air pressure generating mechanism that is activated by a battery, and an upper unit that is connected to an upper end of the sprayer body and includes a liquid storage tank for storing liquid cosmetic, and a nozzle unit that uses air pressure generated by the air pressure generating mechanism to draw out the cosmetic stored in the liquid storage tank and spray it in one direction, The liquid storage tank includes: An air inlet hole is provided to prevent a vacuum pressure from being generated when the cosmetic liquid is sprayed, so that the cosmetic liquid can be sprayed smoothly; A drain port through which the cosmetic liquid is discharged; a back pressure tube having one end connected to the air inlet and the other end extending to the inside or outside of the liquid storage tank,

2. The portable cosmetic liquid spraying device according to claim 1, wherein the exhaust pipe extends into the liquid storage tank and is formed in a U-shape.

3. The upper unit includes: An upper case having a plug cover at the top and a nozzle cover that opens in a sliding manner at the front; a nozzle cover switch provided in the front of the upper case; a main operating switch provided at the rear of the upper case; 2. The portable cosmetic liquid spraying device according to claim 1, wherein the plug cover is attached to the upper case by a magnetic force of a magnet installed inside the upper case so as to be opened while rotating in a hinge manner.

4. 4. The portable cosmetic spraying device according to claim 3, wherein a filter membrane made of graphene is provided on each of the spraying ducts of the nozzle unit, which allows air to pass through but prevents liquid substances from passing through under room temperature and atmospheric pressure conditions.

5. 5. The portable cosmetic liquid spraying device according to claim 4, wherein the filter membrane has fine holes of 10 to 50 μm.

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