JP7686904B2 - Portable cosmetic liquid spraying device with pressure spraying system - Google Patents

Description

The present invention relates to a cosmetic liquid spraying device, and more specifically to a portable cosmetic liquid spraying device that uses a pressure spray system and can be used cleanly without tears, has a simple structure, and has improved durability.

Cosmetics used for beauty purposes are applied directly to the skin, and therefore have a sensitive effect on skin health. Recently, many women have been struggling with skin problems due to environmental, dietary or stress issues. Therefore, the importance of skin care has increased, and various types of cosmetics or skin protection agents have been proposed on the market.

Recently, cosmetics have been developed that are liquid and can be applied directly to the skin to simultaneously achieve moisturizing, skin beauty, and skin health benefits. These liquid cosmetics are applied to the skin through a cosmetic liquid spraying device that sprays them onto the face in the form of fine particles to increase skin absorption.

Some cosmetic sprayers have a built-in small compressor that generates air pressure. This helps to reduce cosmetic waste by spraying the cosmetic with compressed air, and improves the effectiveness of the cosmetic by atomizing it. Typically, liquid cosmetics containing active ingredients that are beneficial to health are delivered to the skin through such cosmetic sprayers.

Conventional spray-type cosmetic dispensers are inconvenient to use because one or two drops of tears are generated during use. In particular, air holes are provided to extract the cosmetic from the sealed cosmetic capsule, and the tear phenomenon occurs through these air holes. When cosmetic tears are generated, foreign objects may get on the cosmetic, the cosmetic may be consumed, or the cosmetic may get on other items in the handbag. In addition, the cosmetic may condense and be sprayed in droplets like spit during use, which is inconvenient to use.

As an example of a compressed air type cosmetic liquid spraying device, there is Korean Patent Application No. 10-2017-0023673. According to this, it often includes a cap that must be separated from the main body when used. In this case, there is the inconvenience of managing the cap. In other words, there is the inconvenience of having to separate the cap every time use is completed and then put the cap back on after use.

In addition, because conventional spray devices use a pin-shaped nozzle that is pulled back to open the nozzle hole, there was a problem with the cosmetic liquid being sprayed in droplets at the time of use and at the end of use. In other words, it was not possible to spray the cosmetic liquid as fine particles, and it was sprayed in agglomerated form, like spitting.

As such, conventional cosmetic spraying devices have many inconveniences.

In view of these problems, the object of the present invention is to provide an improved pressure-spray type cosmetic liquid spraying device. More specifically, the present invention provides a portable pressure-spray type cosmetic liquid spraying device that is improved in many ways, such as eliminating the phenomenon of one or two drops of tears being generated during use or carrying, eliminating the inconvenience of having to separate and attach the cap since there is no separate cap to cover the nozzle area, improving durability, and maintaining fine cosmetic particles during use.

This purpose is achieved by providing an upper unit that includes a sprayer body that has a built-in compressor that is powered by a battery, a liquid storage tank that is connected to the upper end of the sprayer body and that stores liquid cosmetics, a nozzle that uses air pressure generated by the compressor to draw out the cosmetics stored in the liquid storage tank and spray it in one direction, and an upper case that covers the liquid storage tank,

The nozzle portion is
a spray pipe having a liquid inlet hole at an upper portion and a pipe line in communication with the liquid inlet hole in a horizontal direction at a center; a piston that is inserted into the pipe line of the spray pipe and elastically moves in a horizontal direction to selectively open and close the pipe line; and an operation switch connected to the piston.

This is achieved by a portable cosmetic liquid spraying device that includes a nozzle cap whose rear end screws into the tip of the spray tube so as to surround the tip of the spray tube, generates negative pressure in the duct using the air pressure generated by the compressor, and has a liquid spray hole in the center of the tip.

According to another feature of the present invention, the piston is provided with a piston head whose area expands, a piston seat on which the piston head can be seated is provided on the pipe line, and the piston is subjected to an elastic force in a direction in which the piston head is in close contact with the piston seat.

According to another feature of the present invention, a groove is provided in the middle of the piston along the circumferential direction, and the piston is provided with a connecting hole whose one end is open toward the groove and whose other end is open toward the pipeline, and the piston can be provided with O-rings for watertightness on the front and rear sides centered on the groove.

The upper case formed on the upper end of the injection device body is covered like a cap, and the upper case opens while sliding vertically only within a certain range by a guide hook, and the upper case can be configured to block the liquid injection hole of the nozzle cap when in a closed state and to open the liquid injection hole when raised and opened.

According to yet another feature of the present invention, the liquid storage tank comprises:
the cosmetic liquid is smoothly ejected by preventing a vacuum pressure from being generated when the cosmetic liquid is ejected, an air inlet hole provided, a liquid outlet through which the cosmetic liquid is ejected, and a pressure exhaust pipe having one end connected to the air inlet hole and the other end extending into the liquid storage tank,

This is achieved by a portable cosmetic spraying device that is 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.

This configuration provides a portable cosmetic liquid spraying device with a pressure spraying method that prevents the occurrence of one or two tears during use or carrying, eliminates the inconvenience of separating and attaching the cap because there is no separate cap to cover the nozzle, and reduces manufacturing costs due to simple assembly. It also provides a cosmetic liquid spraying device that maintains fine cosmetic particles during use, improving the feel of use.

The present invention provides a portable cosmetic liquid spraying device that selectively opens the ducts by piston movement, eliminating the problem of cosmetic liquid being sprayed in clumps.

1 is a perspective view of a portable cosmetic spraying device according to an embodiment of the present invention; 1 is a perspective view showing a state in which a portable cosmetic liquid spraying device according to an embodiment of the present invention is used; 2 is a schematic cross-sectional view taken along line AA in FIG. 1. 2 is a cross-sectional view taken along line AA in FIG. 1 in a used state. 2 is a partially exploded cross-sectional view taken along line AA in FIG. 1. 4 is a cross-sectional view corresponding to FIG. 3 according to another embodiment of the present invention. FIG. 2 is a schematic cross-sectional view taken along line BB in FIG. 1, illustrating a state of use. 2 is a partially exploded perspective view of a liquid storage tank and a nozzle of a portable cosmetic liquid spraying device according to an embodiment of the present invention; FIG. 1 is a perspective view of a portable cosmetic spray device using a pressure spray method according to an embodiment of the present invention; 1 is a perspective view showing a state in which a portable cosmetic spray device of a pressure spray type according to an embodiment of the present invention is used; 11 is a schematic cross-sectional view taken along line AA in FIG. 10. 12 is a schematic cross-sectional view taken along line BB in FIG. 11. 2 is a partially exploded perspective view of a liquid storage tank and a nozzle of a pressure spray type portable cosmetic spray device according to an embodiment of the present invention; FIG. 4 is a block diagram illustrating the operation of a liquid storage tank of a portable cosmetic spray device using a pressure spray method according to an embodiment of the present invention; FIG. 4 is a cross-sectional view of a portable cosmetic spray device using a pressure spray method according to another embodiment of the present invention; FIG. 13 is a cross-sectional view of a liquid storage tank of a portable cosmetic spray device using a pressure spray method according to another embodiment of the present invention.

The specific contents of the present invention will be described in detail below with reference to the attached drawings, Figures 1 to 8.

The portable cosmetic liquid spraying device of the pressure spraying type according to the present invention (hereinafter referred to as "cosmetic liquid spraying device") comprises a spraying device body 1 and an upper unit 3 coupled to the upper end of the spraying device body 1. A service unit 5 can be added to the lower part of the spraying device body 1 as an option.

Inside the injection device body are a rechargeable battery 7, a control circuit 9, and a compressor 11. The injection device body 1 can be provided with a charging terminal for charging the battery. The compressor 11 is small and generates compressed air and supplies it to the nozzle. This configuration is no different from the conventional one.

The upper unit 3 is connected to the top of the injection device body 1. Screw-type connection is also possible, as is one-touch connection.

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

The liquid storage tank 13 is funnel-shaped, wide at the top and narrow at the bottom, and the drainage port 13a is provided at its lowest end, particularly in the bottom plate. A see-through window can be provided in the rear side wall of the liquid storage tank 13 to allow the remaining amount of contents to be checked.

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

The purpose of the injection pipe 19 is to provide a conduit 27 that serves as a passageway for discharging the liquid. A liquid inlet hole 19a is provided at the rear upper portion of the injection pipe 19, through which the liquid discharged from the liquid storage tank 13 flows. The conduit 27 is connected to the liquid inlet hole 19a, and is provided laterally along the longitudinal direction of the injection pipe 19.

The piston 21 is inserted into the pipe 27 of the injection pipe and performs elastic piston movement in the horizontal direction to selectively open and close the pipe.

The operation switch 29 is connected to the piston 21. The operation switch 29 may be provided integrally or assembled to the rear end of the piston 21. The operation switch 29 may be provided so as to be exposed to the outside, and may be locked so as not to operate when the upper case 17 is closed. For this purpose, the operation switch is provided with an engagement groove 33, and is engaged with the engagement groove 33 when the upper case 17 is closed, i.e., lowered. When the upper case 17 is open, i.e., raised, the operation switch 23 can be operated. By pressing the operation switch 23, the piston 21 opens the pipe 27, and the compressor 11 starts to operate. Electrical switches W1 and W2 may be linked to the operation switch 23.

The rear end of the nozzle cap 25 screws onto the tip of the injection tube so that the nozzle cap 25 surrounds the tip 19b of the injection tube. The nozzle cap 25 is cone-shaped.

The nozzle cap 25 creates a vacuum pressure in the duct 27 by the air pressure generated by the compressor 11. A liquid spray hole 25a is provided at the center of the tip of the nozzle cap 25, which is the outlet from which the cosmetic liquid is finally sprayed.

Below, we will explain an embodiment in which the pipeline 27 is selectively opened and closed by the operation of the piston 21.

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

A piston seat 37 on which the piston head 35 can be seated is provided on the pipe 27. The piston 21 receives an elastic force in a direction in which the piston head 35 comes into 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 pipe 19.

An O-ring 41 is provided on the stem 21a of the piston 21 to prevent liquid from flowing out the rear of the injection tube 19.

As shown, the piston head 35 resembles the head of a flat head screw, but can be modified into a variety of shapes.

The following describes the liquid storage tank 13 and its installation structure according to an embodiment of the present invention.

The liquid storage tank 13 includes an air inlet hole 53 that is provided so that the cosmetic liquid C can be sprayed smoothly without generating a vacuum pressure when the cosmetic liquid C is sprayed, a liquid drain port 13a through which the cosmetic liquid C is discharged, and a back pressure tube 55 that is connected at one end to the air inlet hole 53 and at the other end extends into the interior of the liquid storage tank 13.

A second anti-tear pad 57 is fixedly provided on the inner surface of the upper case 17 to selectively open and close the air inlet hole 53.

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 described below with reference mainly to Figure 7.

The upper case 17 is cap-shaped and is fitted over the liquid storage tank 13. Guide hooks 47 are symmetrically provided on the injection device body 1 so as to protrude upward. A guide groove 47a is provided on the outer surface of the guide hook 47, which extends vertically. A locking protrusion 49 protrudes from the lower part of the inner wall of the upper case 17, and this locking protrusion 49 is inserted into the guide groove 47a. The upper case 17 can slide vertically in a section corresponding to the length of this guide groove 47a.

Magnetic bodies M1 and M2 can be provided at each location so that the closed upper case 17 can remain closed and, once opened, can remain open.

The upper case 17 is arranged to block the liquid injection hole 25a of the nozzle cap when closed, and to open the liquid injection hole 25a when raised and open. A first anti-tear pad 51 is fixedly provided on the front inner surface of the upper case 17, in front of the liquid injection hole 25a.

Hereinafter, another embodiment of the present invention will be described with reference to FIG. 6. According to this embodiment, a groove 43 is provided in the middle of the piston 21' along the circumferential direction. The piston 21' is also provided with a connection hole 45, one end of which opens toward the groove 43 and the other end of which opens toward the pipeline 27. The piston 21' can be provided with O-rings 41, 41' for watertightness in the front and rear of the groove 43. The pipeline 27 acts as a cylinder.

When the operation switch 23 is pressed, the groove 43 is positioned directly below the liquid inlet hole 19a, allowing the liquid to flow out along the pipeline 27.

The upper case 17 is provided with an upper lid 29 that can be opened when refilling the cosmetic liquid. This upper lid 29 is hinged and can be easily opened and stably fixed by the magnets M1 and M2.

Below, another embodiment of the present invention will be described with reference to Figure 8.

This embodiment relates to the plug 59 of the liquid storage tank. When refilling the liquid storage tank with cosmetic liquid, the plug 59 is opened to open the liquid inlet 13b. When the plug 59 is closed after refilling with cosmetic liquid, pressure is generated inside the liquid storage tank 13. This embodiment is intended to solve the problem of cosmetic liquid being sprayed out one or two drops at a time due to pressure.

According to this embodiment, the plug 59 is inserted into the liquid inlet 13b and fixed in place. An air vent pin 61 is provided at the bottom of one end of the plug 59. The top plate of the liquid storage tank 13 is provided with the liquid inlet 13b and an air vent hole 62 nearby into which the air vent pin 61 is inserted. If the air vent pin 61 is inserted after the plug is inserted, air is discharged to the outside of the liquid storage tank 13 through the air vent hole 62. Therefore, pressure does not increase in the liquid storage tank 13. As a result, the possibility of liquid being sprayed through the nozzle portion 15 is extremely low.

The following describes further embodiments of the present invention.

According to yet another embodiment of the present invention, the nozzle cap is characterized by the structure in which it is connected to the injection tube 19. The connection part of the nozzle cap 25 is composed of a threaded part 63 and a straight part 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 structure is provided in which the nozzle cap 25 is accurately aligned with the center of the injection tube 19. The straight part 65 acts as a guide like a sleeve with minimal tolerance and is connected to the injection tube 19 to be positioned at the center point. In the case of a screw connection, there is an assembly error, but the straight part 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. In other words, it contributes to improving the durability of the device.

According to yet another embodiment of the present invention, an infrared lamp 67 can be provided around the nozzle cap. This heats the cosmetic liquid, eliminating the cold feeling when applied to the skin, and serves to double the effect of the cosmetic liquid by supplying infrared rays to the skin. The infrared lamp 67 is ring-shaped and can be provided to surround the outer periphery of the nozzle cap.

Other embodiments of the present invention will be described below with reference to Figures 9 to 16.

The portable cosmetic liquid spraying device of the pressure spraying type according to the present invention (hereinafter referred to as "cosmetic liquid spraying device") comprises a spraying device body 1 and an upper unit 3 coupled to the upper end of the spraying device body 1. A service unit 5 can be added to the lower part of the spraying device body 1 as an option.

The injector body contains a rechargeable battery 7, a control circuit 9, and an air pressure generating mechanism 11. The injector body 1 can be provided with a charging terminal for charging the battery. The air pressure generating mechanism 11 is a small compressor that generates compressed air and supplies it to the nozzle.

The injector body contains a rechargeable battery 7, a control circuit 9, and an air pressure generating mechanism 11. The injector body 1 can be provided with a charging terminal for charging the battery. The air pressure generating mechanism 11 is a small compressor that generates compressed air and supplies it to the nozzle.

An important feature of the present invention is the liquid storage tank 13. The liquid storage tank 13 includes a tank body 16, an air inlet hole 39 provided in the upper plate 16-1 of the tank body 16, and an exhaust pipe 20 provided inside the tank body 16.

The air inlet hole 39 is provided to prevent the generation of vacuum pressure when the cosmetic liquid is ejected, so that the cosmetic liquid can be ejected smoothly, and one air inlet hole 39 is provided.
The drain outlet 13 a is a hole through which the cosmetic liquid is discharged, and is provided at the bottom end of the tank body 16 and connected to a nozzle 27 .

The air inlet hole 39 and the liquid drainage port 13a are conventional components. A liquid inlet 16-2 is provided on the upper plate 16-1 of the tank body 16, and a plug 38 is inserted into this liquid inlet 16-2.

The exhaust pipe 20 has one end connected to the air inlet hole 39 and the other end extending into the tank body 16. To connect the exhaust pipe 20, the air inlet hole 39 may be provided with a nipple that protrudes into the interior of the liquid storage tank as shown. There are various methods for attaching the exhaust pipe 20. The exhaust pipe 20 may be connected so that it protrudes slightly outside the tank body 16 and fixed with adhesive.

According to an embodiment of the present invention, the exhaust pressure pipe 20 is attached in a "U" shape, and the bent portion can have a length that contacts the upper surface of the bottom plate 16-3 of the tank body 16. The exhaust pressure pipe 20 is installed in the liquid storage tank 13 in a diagonal line, and the other end is installed close to the bottom surface of the top plate 16-1 of the tank body 16. In order to prevent the exhaust pressure pipe 20 from moving freely, the end of the exhaust pressure pipe 20 can be fixed to a holder 20-1 installed on the inner wall of the tank body 16.

According to an embodiment of the present invention, the exhaust pressure tube 20 may be provided to extend outside the liquid storage tank 13 for ease of installation. The exhaust pressure tube 20 is in the form of a thin tube and may be made of silicone, rubber, or other synthetic resin. The inner diameter of the exhaust pressure tube 20 may be, for example, 0.3 to 5 mm.

Ultimately, the key point is that cosmetic liquid C cannot flow out of the tank body 16 through the exhaust pipe 20, whereas air can flow in. Air can flow in through any small diameter pipe, but cosmetic liquid C cannot flow out through the exhaust pipe 20 unless pressure acts on the inside of the tank body 16 due to surface tension.

The length of the exhaust pressure tube 20 can be adjusted depending on the situation. For example, as shown in FIG. 15, it can be set so that it touches the bottom plate 16-3 of the tank body 16. The length of this exhaust pressure tube 20 can be reduced when the tube diameter is made smaller or when the cosmetic liquid has a high viscosity.

With this configuration, as shown in Figures 14(a) and (b), even if the liquid storage tank is lying on its side or upside down, the cosmetic liquid C cannot flow through the exhaust pipe 20 and out to 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 when spraying.

Below, 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 portion 15 that uses air pressure generated by the air pressure generating mechanism 11 to draw out the liquid cosmetics stored in the liquid storage tank 13 and spray it in one direction.

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

The plug cover 23 is attached to the upper case 17 so as to be opened while rotating in a hinge manner, and can be attached and fixed to the side plate 17a of the upper case by the magnetic force of the cover fixing magnet 22 installed inside the upper case 17. The cover fixing magnet 22 can be fixedly installed on the bottom surface of the side plate 17a of the upper case, and the plug cover 23 can include a metal piece that is a magnetic material.

The drain port 13a of the liquid storage tank 13 is provided at the bottom end so that all the liquid can be used. A viewing window 14 can be provided on the rear side wall of the liquid storage tank 13 so that the remaining amount of the contents can be checked.

A transparent section 18 is provided on the rear side wall of the upper case 17 in the same position as the viewing window 14 of the liquid storage tank 13. A plug cover 23 is provided at the top end of the upper case 17, and a nozzle cover 25 that slides upward and opens is provided at the front. A nozzle cover switch 19 is provided at the front of the upper case 17 and blocks the nozzle 27. A main operation switch 21 is provided at the rear of the upper case 17, and activates the air pressure generating mechanism 11 when pressed with a finger.

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 supported by the nozzle cover 25. The nozzle cover switch 19 and nozzle cover 25 are maintained in a closed state by a cover holding means. When the nozzle cover switch 19 is pressed, the cover holding means is released and the nozzle cover 25 slides elastically to open as shown in Figures 10 and 12. An absorbent pad 31 is attached to the back of the nozzle cover 25, with a thickness that is almost in contact with the tip of the nozzle 27. The absorbent pad 31 is intended to absorb a small amount of cosmetic liquid that may be sprayed out due to pressure when refilling the liquid.

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 body 1. The magnetic force of the cover magnets 33, 33' is stronger than the elastic force of the first spring 29. This allows the nozzle cover 25 to be maintained in a closed state. When the nozzle cover switch 19 is pressed 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 elastically operates in the horizontal direction by the second spring 35. When the nozzle cover switch 19 returns to its original state and the nozzle cover 25 is pressed downward, the cover magnets 33, 33' are stuck together again, maintaining the nozzle cover 25 in a closed state.

If necessary, a locking means can be further provided to prevent the nozzle cover switch 19 from being pressed accidentally. For example, a method can be adopted in which the user pushes the nozzle cover switch 19 slightly upward before it can be pressed.

According to an embodiment of the present invention, a locking switch is further provided as a B-contact switch to prevent the main operating switch 21 from operating when the nozzle cover 25 is closed. As shown in FIG. 10, the locking switch may include a 1-1 signal magnet 37 provided at the lower end of the nozzle cover 25 and a 1-2 signal magnet 37' provided on the injector body 1. As a result, the main operating switch 21 functions only when the nozzle cover 25 is open.

As shown in the figure, the main operating switch 21 is configured to function when the 1-1 signal magnet 37 and the 1-2 signal magnet 37' are separated.

However, instead of the 1-1 signal magnet 37 and the 1-2 signal magnet 37', the 3-1 signal magnet 75 and the 3-2 signal magnet 75' may be selectively provided so that the main operating switch 21 is operated by releasing the locking function when the nozzle cover 25 is fully open. The 3-1 signal magnet 75 and the 3-2 signal magnet 75' may be provided on the top surface of the stopper 43 and the bottom surface of the plug cover 23, respectively, as shown in Figures 11 and 12. Figure 12 shows the state in which the 3-1 signal magnet 75 and the 3-2 signal magnet 75' are attached to each other to enable the main operating switch 21 to function.

The plug cover 23 is basically provided for refilling the liquid storage tank 13 with cosmetic liquid C. When in use, the plug cover 23 is closed as shown by the solid lines in Figures 9 and 11, and can be opened as shown by the dashed and dotted lines when refilling the liquid.

A plug 38 made of an elastic material such as rubber or silicone is attached to the top of the liquid storage tank 13. The user can remove the plug 38 and then refill the liquid.

The cosmetic liquid C can be easily ejected only if air can flow into the storage tank 13 while the cosmetic liquid C is being ejected through the nozzle portion 15, so the storage tank 13 is provided with an air inlet hole 39.

According to another feature of the present invention, the cover opening restriction means is provided to allow the plug cover 23 to open only when the nozzle cover 25 is closed. The cover opening restriction means includes the plug cover 23 that opens in a hinged manner around the hinge shaft 41, and a stopper 43 that protrudes 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 the bottom surface of one side of the plug cover 23, thereby preventing the plug cover 23 from rotating in a hinged manner.

The main operating switch 21 is supported by a third spring 45. The main operating switch 21 includes second signal magnets 47, 47' that serve as A contacts. The second signal magnets 47, 47' can be provided at the lower end of the main operating switch 21 and the upper end of the injector body 1. When the main operating switch 21 is pressed, the second signal magnets 47, 47' act as switch contacts, generating a signal to operate the air pressure generating mechanism 11.

The nozzle portion 15 will be described below mainly with reference to Figures 11 to 13.

At the bottom end of the liquid storage tank 13, a nozzle seat 49 is provided at the position where the drain port 13a is provided, and a pair of first O-rings 51 are inserted and attached here. A spray pipe 55 is connected to the nozzle base 53. A first filtration membrane 57 is interposed between the first O-rings 51. The first filtration membrane 57 is made of a graphene material, and plays a role in blocking tears under conditions of room temperature and atmospheric pressure. The first filtration membrane 57 has fine pores that allow the cosmetic liquid to pass through when pressure is applied.

The first filtration membrane 57 may be made of a graphene material with fine pores of 10 to 50 μm.

The nozzle 27 includes a pin-shaped nozzle head 59, a housing 61 that is fixed so as to surround the periphery of the nozzle head 59, and a nozzle installation part 63 that fixes the nozzle head 59 in a state where it is connected to the ejection pipe 55. The housing 61 is connected to the nozzle installation part 63 by a screw-fitting method. The nozzle head 59 has a sharp tip 59a, and a hole 59b is provided in the center of the tip to serve as a path for ejecting liquid.

The nozzle head 59 is fitted to the periphery of the ejection tube 55, and a pair of second O-rings 65 and a second filtration membrane 67 are interposed between them. The second filtration membrane 67, like the first filtration membrane 57, is a thin film made of graphene material, and serves to prevent tears under atmospheric pressure and room temperature conditions, and to allow cosmetic liquid to pass through when pressure is applied. The second O-rings 65 are provided on both sides of the second filtration membrane 67.

The nozzle head 59 is insert molded into the nozzle mounting part 63. The nozzle mounting part 63 is screwed into the liquid storage tank 13 as shown in FIG. 13. For this purpose, a screw-on tube 69 is formed on the front of the liquid storage tank 13, and a screw fixing part 71 is provided on the nozzle mounting part 63. Meanwhile, the nozzle mounting part 63 is provided with an air hole 73 for guiding air pressure to flow into the space between the nozzle head 59 and the housing 61. The air hole 73 is provided in the center of the sprayer body 1 for ease of assembly.

The compressed air generated by the air pressure generating mechanism 11 passes quickly through the space S between the nozzle head 59 and the housing 61, reducing the pressure inside the nozzle head 59 according to Bernoulli's theorem, allowing the cosmetic liquid to be sucked in. Ultimately, the cosmetic liquid C passes through the second and third filter membranes 57, 67 due to the negative pressure and is sprayed from the nozzle 27.

The present invention is characterized in that the air inlet hole 39 provided at the top end of the liquid storage tank 13 and the nozzle section have filter membranes 40, 57, and 67 that allow air to pass through but prevent liquid substances from passing through under normal temperature and atmospheric pressure conditions.

The size of the micropores of the filtration membranes 40, 57, and 67 may vary depending on the installation position, and the average pore size is 10 to 50 μm. A graphene material may be used as the basic material of the filtration membranes 40, 57, and 67, but is not limited thereto, and one of the second and third filtration membranes 57 and 67 may be omitted. Graphene is a carbon allotrope made only of carbon atoms, and is a new material in the form of a thin film having a honeycomb structure with a thickness of one carbon atom, and the present invention uses this graphene.

Below, another embodiment of the present invention will be described with reference to Figure 16.

This embodiment relates to the plug 38 of the liquid storage tank. When refilling the liquid storage tank with cosmetic liquid, the plug 38 is opened to open the liquid inlet 16-2. When the plug 38 is closed after refilling with cosmetic liquid, pressure is generated inside the liquid storage tank 13. This embodiment is intended to solve the problem of cosmetic liquid being sprayed one or two drops at a time from the nozzle 27 due to pressure.

In this embodiment, an "L"-shaped air vent pipe 38-3 is provided inside the plug 38. One end of the air vent pipe 38-3 opens to the lower end 38-2 of the plug, and the other end opens to the upper end 38-1 of the plug.

As shown in Figure 16(a), when the stopper is being closed, air is expelled from the stopper through the air vent line 38-3. This prevents the internal pressure of the tank body 16 from increasing. The air vent line 38-3 is closed only at the last moment before the stopper is closed (see Figure 16(b)). This keeps the internal pressure of the tank body 16 at an extremely low level when the stopper is being opened and closed. As a result, the possibility of liquid spurting out through the nozzle 27 becomes extremely low.

This invention proposes a portable cosmetic liquid spraying device that uses a pressure spray system and can be used cleanly without tears, has a simple structure, and has improved durability.

According to an embodiment of the present invention, a service unit 5 can be further coupled to the lower end of the sprayer body 1. The service unit 5 can provide a lamp, a galvanic massager, an LED lamp for skin beauty, a vibration massager, etc. These are convenient devices or beauty devices that use the power source of the battery 7. The service unit 5 can be connected to the sprayer body in various ways.

The configurations shown and described above are merely preferred embodiments based on the technical concept of the present invention. Those skilled in the art should be able to implement various modifications based on their ordinary technical common sense, but it should be noted that these modifications are within the scope of protection of the present invention.

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

REFERENCE SIGNS LIST 1 Injector body 3 Upper unit 5 Service unit 7 Battery 9 Control circuit 11 Compressor 13 Storage tank 15 Nozzle section 17 Upper case 19 Nozzle cover switch C Cosmetic liquid

Claims (5)

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, The portable cosmetic liquid spraying device according to claim 1, characterized in that the exhaust pipe extends into the interior of the liquid storage tank and is arranged in a "U" shape. 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. The portable cosmetic liquid spraying device according to claim 3, characterized in that a filter membrane made of graphene is provided on the spraying duct of the nozzle portion, which allows air to pass through but prevents liquid substances from passing through under room temperature and atmospheric pressure conditions. 5. The portable cosmetic liquid spraying device according to claim 4, wherein the filter membrane has fine holes of 10 to 50 μm.