WO2019156261A1

WO2019156261A1 - Air brush

Info

Publication number: WO2019156261A1
Application number: PCT/KR2018/001631
Authority: WO
Inventors: 박주영
Original assignee: (주)네추럴리즘
Priority date: 2018-02-07
Filing date: 2018-02-07
Publication date: 2019-08-15

Abstract

An air brush for spraying a spray liquid in a mist state is disclosed. According to an embodiment of the present invention, provided is the air brush comprising: an air supply module having a battery, an air supply means for discharging compressed air when power is supplied, and a switch for supplying or blocking the power of the battery to/from the air supply means; and a spray head, which is separably coupled to the air supply module, has a spray port formed at one side thereof, and has a storage tank for storing the spray liquid, a needle valve for discharging or blocking the spray liquid accommodated in the storage tank to/from an outflow hole disposed in the spray port, a valve frame supporting the needle valve and respectively having an air supply path in which the compressed air flows and an orifice part, which is disposed adjacently to the outflow hole and jets, toward the spray port, the compressed air having passed through the air supply path, and a trigger for simultaneously operating the needle valve and the switch.

Description

Airbrush

The present invention relates to an air brush for injecting the injection liquid in a mist state, and relates to an air brush for improving safety during use and reducing maintenance costs.

The airbrush according to the applicant's registered patent No. 10-1530424 is a device that is mainly sprayed in the mist state of the material used in the beauty. The airbrush has been developed for the purpose of making it easy to carry and operate, and to easily replace and use the injection liquid according to the purpose of use.

As the airbrush is commercialized and used in various environments, a necessity of a method of preventing malfunction or damage due to penetration of a liquid such as water or injection liquid into the air supply module has been proposed.

In addition, when using various types of injection liquids as the air brush, a number of injection heads corresponding to the types of injection liquids should be provided. However, since the injection head is provided with a needle valve having a high precision, the price is not cheap. Accordingly, there is also a need for a method of enabling a single injection head to easily replace and use different types of injection liquids.

The present invention is to improve the airbrush according to these needs and demands, to prevent liquid from flowing into the air supply module to prevent malfunction or breakage, and to easily replace different types of spray liquid in one spray head. It is to be able to inject.

An embodiment of the present invention is to provide an airbrush that can minimize the occurrence of malfunction by the liquid penetrates into the air supply module.

In addition, an embodiment of the present invention is to provide an airbrush that is easy to replace and use the injection liquid while saving the cost.

According to an aspect of the present invention, an air supply module having an air supply means for discharging compressed air when the electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module; The injection port is formed on one side, and the storage tank in which the injection liquid is stored and the needle valve and the needle valve to allow the injection liquid contained in the storage tank to flow out or shut off to the outlet hole disposed in the injection port and the compressed air And a valve frame and a trigger for simultaneously operating the needle valve and the switch, each of which has an orifice portion which is disposed adjacent to the flowing air supply passage and the outlet hole and in which the compressed air passing through the air supply passage is ejected toward the injection hole. It includes a spray head detachably coupled to the upper side of the air supply module, the minute The head further includes a driving magnet is installed on a portion of the trigger, the switch may be operated if the airbrush is determined by the distance between the driving magnet and the switch according to the change in position of the trigger can be provided.

Here, the switch is installed on the bottom of the upper cover, the upper cover may be made of a low permeability material.

According to another aspect of the present invention, an air supply module having an air supply means for discharging compressed air when the electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module; The injection port is formed on one side, and the storage tank in which the injection liquid is stored and the needle valve and the needle valve to allow the injection liquid contained in the storage tank to flow out or shut off to the outlet hole disposed in the injection port and the compressed air A valve frame and a trigger for operating the needle valve and the switch at the same time, the valve frame being formed adjacent to the flowing air flow passage and the outlet hole and having an orifice portion through which the compressed air passing through the air supply passage is ejected toward the injection hole, respectively; It includes a spray head detachably coupled to the upper side of the air supply module, An operation hole is formed in an upper cover, and the injection head further includes an operation cover covering the operation hole and made of an elastic material, and the switch is disposed in close proximity to the operation hole to change the position of the trigger. An airbrush may be provided in which the switch is operated according to a degree at which a lower end presses the operation cover.

According to another aspect of the present invention, an air supply module having an air supply means for discharging compressed air when the electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module And, the injection port is formed on one side, the storage tank in which the injection liquid is stored and the needle valve to support the needle valve and the needle valve to be discharged or blocked by the discharge hole disposed in the injection port and the compressed air And a valve frame and a trigger for simultaneously operating the needle valve and the switch, each of which has an orifice portion which is disposed adjacent to the air supply flow path and the outlet hole through which the compressed air passed through the air supply flow path is ejected toward the injection hole. It includes a spray head detachably coupled to the upper side of the air supply module, The upper cover is formed with an operation hole into which the lower end of the trigger is inserted, and the switch is disposed close to the operation hole to determine whether or not to operate according to the depth that the trigger is inserted into the operation hole, the storage tank is When a receiving space is formed to accommodate the injection liquid is formed in the discharge port is opened on one side, the discharge port is downwardly and detachably fastened to the upper side of the valve frame, when the discharge head is fastened to the valve frame An air brush having an insertion hole into which at least a portion of the storage tank is inserted may be provided.

The outer circumferential surface of the storage tank may be formed with a ventilation groove one end portion reaches a portion where the discharge port is formed.

In the above airbrush, the injection head is made of an elastic material, the outer peripheral portion is fixed to the inner circumferential surface of the insertion hole is formed in the middle portion of the through-hole smaller than the storage tank is formed and the diameter of the outer periphery is the storage tank It may further comprise a ring-shaped valve ring having a larger valve rib.

At this time, a portion of the valve rib may have a thin film portion thinner than other portions.

The air brush may further include a fastening magnet installed in the upper cover and a ferromagnetic material installed in the injection head.

On the other hand, the injection head of the above-described air brush, one side is connected to the air supply passage, the other side is protruded downward and the other end is further provided with a feed pipe formed with a tip portion, the upper cover is formed with a connection hole, The air supply module further includes an opening and closing member made of an elastic material and installed in the connection hole to seal the connection hole, and the cutoff line is formed in the opening and closing member so that the air supply module and the injection head are coupled to the tip portion. By the incision line is penetrated by the other side of the air supply pipe may be connected to the air supply means.

Here, the opening and closing member may be made of a porous body having a closed cell structure.

The embodiment of the present invention by applying a magnetic sensor as a switch for controlling the operation of the air supply module to prevent the formation of a through hole in the switch is arranged in the upper cover, to minimize the occurrence of malfunction due to liquid infiltration into the air supply module Can be.

In addition, the portion of the upper cover is formed with a connecting pipe is also sealed by the opening and closing member can be further improved the protective effect of the switch.

In addition, the embodiment of the present invention can be fastened by replacing only the storage tank containing the injection liquid to the injection head, it is possible to save the cost required for the replacement use of the injection liquid.

In addition, the embodiment of the present invention can be detached by the magnetic force of the air supply module and the injection head is carried out by the magnetic force, it is possible to minimize the aging due to wear due to frequent desorption.

1 is a perspective view of an airbrush according to an embodiment of the present invention.

Figure 2 is a perspective view of the air supply module and the injection head shown in FIG.

3 is a bottom perspective view of the spray head shown in FIG.

Figure 4 is a longitudinal sectional view of the air supply module shown in FIG.

5 is a longitudinal sectional view of a part of the air supply module and the injection head when the airbrush shown in FIG. 1 is not operated.

FIG. 6 is an enlarged view of the portion labeled VI in FIG. 5;

7 is a longitudinal sectional view of a part of the air supply module and the injection head when the airbrush shown in FIG. 1 is in operation.

FIG. 8 is an enlarged view of the portion indicated by 에 in FIG. 7; FIG.

9 is a longitudinal sectional view of a part of the air supply module and the injection head when the airbrush is not operated according to another embodiment of the present invention.

10 is a longitudinal sectional view of a part of the air supply module and the injection head when the airbrush is operating in accordance with another embodiment of the present invention.

Figure 11 is a perspective view of the air supply module and the injection head of the airbrush according to another embodiment of the present invention.

12 to 15 are views for explaining one modification of the injection head shown in FIG.

16 to 18 are views for explaining the airbrush according to another embodiment of the present invention.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the airbrush 1 according to an embodiment of the present invention may include an air supply module 10, an injection head 20, a protective cap 40, and a cradle 50.

The protective cap 40 covers the spray head 20 and can be detachably coupled to the spray head 20, and the air supply module 10 has a lower cover 13 in the seating groove 51 formed in the holder 50. ) Is coupled to the lower portion of the lower part can be mounted to stand.

2, the air supply module 10 and the injection head 20 may be detachably coupled to each other. At this time, the air supply module 10 and the injection head 20 may be applied to the method of being separated only when the desorption button 36 is press-fitted so as not to be separated arbitrarily, which will be described below.

The air supply module 10 includes an upper cover 11 disposed on an upper side to form an upper outer shell, the air supply module frame 12 described above, and a lower cover 13 disposed on a lower side to form a lower outer shell.

A fastening hole 112 and a protrusion support hole 114 are formed in the upper cover 11, and a connecting pipe 14 is disposed in a shape passing through the upper cover 11 in the middle portion thereof.

A coupling hole 141 is formed in the center of the connection pipe 14, and the air supply module frame 12 is installed to expose the lighting means 19 to the outside.

3 shows a bottom perspective view of the spray head 20 shown in FIG. 1.

Referring to FIG. 3, the spray head 20 includes a head cover 21, a head frame 22, and a detachable button 36. The head cover 21 forms an outer shell of the side and the upper side of the spray head 20, and the bottom of the head frame 22 forms a lower outer shell of the spray head 20.

The injection hole 271 is formed at one side of the head frame 22, a through hole is formed at a portion where the detachable button 36 is disposed, and the upper side of the detachable button 36 is exposed to the outer circumferential surface of the head frame 22.

The upper side of the detachable button 36 is a portion for the user to press the detachable button 36, and the portion exposed to the outside of the head cover 21 is curved or flat so as to correspond to the outer circumferential surface of the head cover 21 as shown. It may be formed to have a shape, but may be formed to protrude from the head cover 21 as necessary, although not shown. A fastening hook 361 is formed below the detachable button 36.

Although not shown, a button support member is disposed in the head cover 21 to elastically support the upper side of the detachable button 36 in a direction exposed through the outer circumferential surface of the head cover 21. Therefore, when the user applies a force to the upper side of the detachable button 36, the detachable button 36 may be pressed in the direction of the center of the head cover 21, the user releases the force applied to the upper side of the detachable button 36 Can be returned to its original position.

For this operation, a spring or the like may be used as a button support member (not shown), and the fastening hook 361 may also be moved toward the center of the head cover 21 or the original position according to the press-fit and return of the detachable button 36. Can be returned to.

2 and 4 together, the fastening hole 112 and the fastening hook 361 is disposed at the corresponding position.

Therefore, as shown in FIG. 1, when the injection head 20 is coupled to the air supply module 10, the fastening hook 361 is inserted into the fastening hole 112, and the fastening hook inserted into the fastening hole 112 ( 361 is fastened to the edge of the fastening hole 112 by the elastic support of the button support member (not shown) to prevent the jet head 20 from being arbitrarily separated from the air supply module 10.

In order to separate the fastened air supply module 10 and the spray head 20, the detachable button 36 is press-fitted to move toward the center of the spray head 20 so that an end of the fastening hook 361 is connected to the fastening hole 112. By being separated from the edge, the fastening hook 361 can be easily withdrawn from the fastening hole (112).

For reference, the fastening hook 361 is formed to have an inclined surface in one direction as shown, so that the bottom surface of the injection head 20 is seated on the upper side of the air supply module 10, and a predetermined force is applied downward. By inserting the 361 into the fastening hole 112, the spray head 20 and the air supply module 10 can be easily coupled without performing an operation such as pressing the detachable button 36.

The air supply pipe 221 protrudes downward from the bottom of the head frame 22, and an air supply hole 222 is formed in the center of the air supply pipe 221. The support protrusion 224 protrudes downward from the edge portion of the head frame 22.

Protrusion support hole 114 formed in the upper cover 11 is formed corresponding to the position of the support protrusion 224 to maintain a constant position when the head frame 22 is seated on the upper cover 11, spraying The head 20 may be stably coupled to the air supply module 10.

On the other hand, the air supply pipe 221 and the connecting pipe 14 is disposed in a corresponding position, when the injection head 20 is coupled to the air supply module 10, the air supply pipe 221 is inserted into the coupling hole 141. Can be. Alternatively, although not shown, the connector 14 may be inserted into the air supply hole 222.

Therefore, the air supply hole 222 and the coupling hole 141 may be in communication with each other, the outer diameter of the air supply pipe 221 and the inner diameter of the coupling hole 141 corresponds or the inner diameter of the air supply hole 222 is the connection pipe 14 If it is formed to correspond to the outer diameter of the air supply pipe 221 and the connecting pipe 14 can be maintained when the airtightness is combined.

The locking protrusion 213 formed on the outer circumferential surface of the head cover 21 is for preventing the protection cap 40 from being arbitrarily separated when the protective cap 40 is coupled to the injection head 20. Although not shown, the locking protrusion 213 is disposed on the inner circumferential surface of the head cover 21. A number of locking grooves corresponding to the position of the machine 213 is formed, so that the locking protrusion 213 is inserted into the locking groove (not shown) when the head cover 21 is coupled to the injection head 20. can do.

Therefore, when the protective cap 40 is coupled to the injection head 20, by applying an appropriate force, the protective cap 40 can be separated from the injection head 20.

The driving hole 225 is for a driving magnet (see 334 of FIG. 5) to be described below, and reference numeral 35 (FIG. 1) denotes an injection button. The operation of the injection button 35 and the driving magnet 334 will be described with reference to FIGS. 5 to 8 below.

4 is a longitudinal cross-sectional view of the air supply module 10 shown in FIG.

Referring to FIG. 4, the air supply module 10 includes an upper cover 11, an air supply module frame 12, a lower cover 13, a connection pipe 14, air supply means 15, a battery 16, and a circuit board. 17, switch 171, fixing means 173 and 174, charging lamp 175, connector 176 and lighting means (19).

Here, since the upper cover 11, the air supply module frame 12, the lower cover 13 and the connecting pipe 14 has been described above, redundant description thereof will be omitted.

The air supply means 15 may include an air pump 151 and a motor 152. The air pump 151 is a device that generates compressed air by sucking the surrounding air when the driving force is transmitted, and the motor 152 is a device that generates the driving force when the electric power is supplied.

Since the air pump 151 and the motor 152 are well known matters, a detailed description thereof will be omitted, and the air supply means 15 may be applied regardless of its driving method as long as it can provide compressed air by receiving power.

However, since the compressed air discharged from the air pump 151 has a smaller variation in the air supply amount, the particle uniformity of the mist is increased. Therefore, the compressed air discharged during the operation of the air pump 151 has a small deviation. Can be used.

For reference, the compressed air in the present specification refers to the air discharged from the air pump 151 for convenience, and in order to allow the air discharged from the air pump 151 to be transported in a specific path, it is common to have a pressure higher than atmospheric pressure. It is named in that. Therefore, the compressed air in the present specification reveals whether or not the air discharged from the air pump 151 is actually compressed.

The battery 16 may be a rechargeable secondary cell, but a primary cell may be used if necessary.

For example, when a secondary battery is used as the battery 16, it may be difficult to obtain a power source for charging when the secondary battery is discharged in a situation such as mountain climbing or backcountry, so that the primary battery may be used as the battery 16. In addition, the battery 16 can be easily replaced by separating the lower cover 13 from the air supply module frame 12.

Although not shown, the air supply module 10 may be operated even when the battery 16 is completely discharged by connecting the power cable to the connector 176 to be described below, and if necessary, the air supply module ( 10, the battery 16 may be removed and power may be supplied from the power cable to the air pump 151.

On the other hand, the support rib 121 is formed protruded on the inner surface of the air supply module frame 12 or manufactured separately and coupled to the air supply module frame 12, and supports the air supply means 15 and the battery 16.

The circuit board 17 is for controlling the operation of the airbrush (1 in FIG. 1) according to an embodiment of the present invention. The circuit board 17 is supplied with the air supply module frame 12 by the fixing means 173 and 174. ) Can be fixedly installed.

The motor 152, the battery 16, the switch 171, the charging lamp 175, the connector 176, and the luminaire 19 of the air supply unit 15 are electrically connected to the circuit board 17, respectively.

The switch 171 allows the electric power of the battery 16 to be supplied or cut off to the motor 152 of the air pump 151. That is, as the switch 171 is operated, the electric power of the battery 16 may be supplied to the air pump 151 to discharge the compressed air, and the electric power supplied to the air pump 151 may be cut off to allow the air pump 151 to operate. May stop working.

The connector 176 connected to the circuit board 17 is for drawing charging power supplied from the outside of the air supply module 10, and a jack (not shown) to which charging power is supplied is detachably coupled to the connector 176. Can be.

Although not shown, the circuit board 17 may be provided with a charging circuit.

While the battery 16 is being charged, the charging lamp 175 may be turned on so that the user may identify that the battery 16 is currently being charged. The charging circuit is different from when the charging lamp 175 is turned off or charging while the charging power is no longer supplied to the battery 16 to prevent overcharging after the charging of the battery 16 is completed. By turning on the color, the user can easily grasp the state of charge of the battery 16.

For reference, when the battery 16 is not charged or the airbrush (1 in FIG. 1) is not used, the lower side of the air supply module 10 is seated in the seating groove 51 of the holder 50 to maintain the standing state. By doing so, it is possible to easily grasp the state of charge of the airbrush 1 and to allow the user to easily grasp the air supply module 10 or the like when the airbrush 1 is to be used again.

The luminaire 19 is provided with a light emitting device (not shown) that emits light when electric power is supplied, such as a light emitting diode, and the light emitting device (not shown) is directed toward the injection hole 271 as shown in FIG. 1. Is placed on.

The light emitting device (not shown) provided in the luminaire 19 is turned on by receiving electric power from the battery 16 through the circuit board 17 when the driving button 172 of the switch 171 is pressed in. When the press-in of the button 172 is released, it may be turned off.

The luminaire 19 is designed to allow the user of the airbrush 1 to operate by the light generated by turning on a light emitting device (not shown), and at the same time, the mist of the injection liquid sprayed from the airbrush 1 Makes it easy to identify the condition applied to the location.

FIG. 5 is a vertical cross-sectional view of a part of the air supply module 10 and the injection head 20 when the airbrush 1 shown in FIG. 1 is not operated, and FIG. An enlarged view of the marked part is shown. It demonstrates with reference to FIG. 5 and FIG.

5 and 6, the spray head 20 has a storage tank 28, a valve frame 23, a needle holder 31, and an elastic member in addition to the head cover 21 and the head frame 22 described above. 32), the trigger 33, the holder movable member 34 and the injection button 35 is further included.

When the air supply module 10 and the injection head 20 are combined, the head frame 22 is seated on the upper side of the upper cover 11. In this case, as described above, the lower side of the air supply pipe 221 may be inserted into the coupling hole 141 of the connecting pipe 14.

The air supply pipe 221 is formed to protrude in the upward direction of the head frame 22, and the air supply hole 222 is formed from the lower end to the upper end of the air supply pipe 221 along the longitudinal direction of the air supply pipe 221.

The valve frame 23 is disposed above the head frame 22 and may be supported by the head frame 22. The valve frame 23 includes a valve seat 24, a valve seat holder 25, an injection cap 26, an injection ring 27, and a needle 30.

The injection ring 27 is a ring-shaped member in which the injection hole 271 is formed at the center, and the diameter of the injection hole 271 and the shape of the inner circumferential surface of the injection hole 271 are diffused when the mist is sprayed or the area to be applied. Subject to change of conditions.

For example, when the mist sprayed from the injection hole 271 of the airbrush (1 in FIG. 1) is to be applied to a large area, the diameter of the injection hole 271 may be sufficiently large, and the density to which the mist is applied. When it is lower, the inner diameter of the injection hole 271 may be formed to be inclined so that the inner diameter of the injection hole 271 increases toward the outside of the injection hole 271.

On the contrary, when the mist sprayed from the injection hole 271 is to be applied to a narrow area, the diameter of the injection hole 271 may be formed to be small, and when the mist is applied to have a high density, the internal diameter of the injection hole 271 may be used. It may be formed to decrease toward the outside of the injection port 271, or may be formed so that the change between the inside and the outside is less.

One side of the needle 30 may be formed to have a shape in which the diameter decreases toward the end as shown.

The valve seat 24 is formed with an outlet hole 243 into which one side of the needle 30 is inserted. On one side of the valve seat 24, an outlet pipe 242 protrudes toward the injection hole 271. The shape of the outlet hole 243 is formed to correspond to one side of the needle 30, when one side of the needle 30 is inserted into the outlet hole 243, as shown in Figure 5 and 6 243 may be closed by the needle 30.

The valve seat holder 25 is to allow the valve seat 24 to be fixedly coupled to the valve frame 23. The valve seat 24 and the valve seat holder 25 may be integrally formed in some cases. It is also possible that the frame 23 and the valve seat holder 25 are integrally formed.

The storage tank 28 is a place where the injection liquid (not shown) to be sprayed in the form of a mist using the air brush 1 is stored, and the storage space 287 in which the injection liquid is stored in the storage tank 28 is stored. ) Is formed, and a discharge port 288 through which the injection liquid contained in the accommodation space 287 flows out is formed below the storage tank 28.

Storage tank 28 is disposed on the upper side of the valve frame 23, the outlet 288 is connected to the groove groove 231 formed downward from the upper side of the valve frame (23). In this case, a sealing member 289 may be interposed between the edge portion of the grommets 231 and the outer circumferential surface of the discharge port 288 to prevent the injection liquid from leaking between the storage tank 28 and the valve frame 23.

As shown in the drawing, the groove 231 is formed to penetrate by the needle 30. The outlet portion 232 is formed in the lower portion of the retaining groove 231 toward one side of the needle 30, and the outlet portion 232 extends to the middle portion of the valve seat holder 25.

The outlet 232 extends to the injection liquid passage 241 and the outlet hole 243 formed in the valve seat 24, and has one side of the needle 30 inserted into the injection liquid passage 241 and the outlet hole 243. When this is removed, the injection liquid flows through the outlet 232 and the injection liquid passage 241 to the outlet hole 243.

In this case, the injection liquid passage 241 formed in the outlet pipe 242 may be formed to have a diameter such that the injection liquid may be smoothly flowed to the outlet hole 243 by the capillary phenomenon. However, since the diameter of the injection liquid passage 241 in which the capillary phenomenon occurs depending on the viscosity of the injection liquid may be different, the diameter of the injection liquid passage 241 may be formed in consideration of the viscosity of the injection liquid to be used.

The air supply passage 233 is formed in the valve frame 23. The air supply passage 233 is a passage through which the compressed air flows when the compressed air flows through the air supply hole 222, and the compressed air introduced into the air supply passage 233 flows toward the injection hole 271 along the air supply passage 233. Flows into.

The injection cap 26 is coupled between the valve seat 24 and the injection port 271, that is, the direction toward the injection hole 271 of the valve frame 23. The injection cap 26 has a shape surrounding the outflow pipe 242 formed in the valve seat 24, and a gap is formed between the inner circumferential surface of the injection cap 26 and the outer circumferential surface of the valve seat 24 to supply the air supply passage 261. Is formed.

Therefore, the compressed air introduced into the air supply passage 233 formed in the valve frame 23 flows into the air supply passage 261 formed between the valve seat 24 and the injection cap 26.

An orifice portion 262 is formed in the central portion of the injection cap 26 so that the end of the outlet pipe 242 penetrates. The air supply passage 261 is formed to have a shape in which the cross-sectional area gradually decreases toward the orifice portion 262, so that compressed air flowed through the air supply passage 233 and the air supply passage 261 through the orifice portion 262. In the process of being discharged to the injection hole (271), the flow rate of the compressed air is greatly increased but the pressure is lowered.

Therefore, when the compressed air is ejected through the orifice portion 262 at a very high flow rate when the sprayed liquid flows out through the outlet hole 243, the sprayed liquid is dispersed by the high speed airflow and sprayed in the form of mist 271. Sprayed through. This will be described again with reference to FIGS. 7 and 8 below.

For reference, when a gap is formed between the air supply hole 222 and the air supply flow path 233 formed in the air supply pipe 221, the compressed air may leak through this gap, so that the head frame 22 and the valve frame ( Between the 23) may be interposed with a connection tube 223 for smoothly flowing the compressed air introduced into the air supply hole 222 into the air supply passage 233.

At this time, in order to improve the assembly of the head frame 22 and the valve frame 23, the connection tube 223 may be made of a material having flexibility. That is, even if some tolerance occurs between the head frame 22 and the valve frame 23 by making the connecting tube 223 flexible, the air supply hole 222 and the air supply passage 233 are connected without leakage of compressed air. You can do that.

The needle support hole 234 is formed in the valve frame 23. Needle support hole 234 is formed side by side toward the opposite direction of the outlet 232, that is, the other side of the needle 30 when the center of the groove 231, the needle 30 is to be smoothly flow in the longitudinal direction It is formed to have a diameter that can support the other side of the needle (30). At this time, the middle portion and the other side of the needle 30 may be formed to have a constant diameter.

The needle holder 31 is coupled in the opposite direction in which the injection hole 271 of the valve frame 23 is formed, that is, in the direction of the other end of the needle 30. In this case, the other side of the needle 30 is fixedly coupled to the needle holder 31, and the needle holder 31 is slidably coupled to the valve frame 23 in a direction parallel to the longitudinal direction of the needle 30.

To this end, a sliding protrusion 311 is formed to protrude from the middle portion of the needle holder 31, and a sliding groove 235 to which the sliding protrusion 311 is inserted to be slidably movable is formed in the valve frame 23.

Therefore, when the needle holder 31 is slid with respect to the valve frame 23 in a direction parallel to the longitudinal direction of the needle 30, one side of the needle 30 is moved together with the needle holder 31. That is, the needle 30 is retracted and advanced in the injection liquid passage 241 according to the sliding movement of the needle holder 31.

When the needle holder 31 is slid in one direction of the needle 30, one side of the needle 30 closes the injection liquid passage 241 and the outlet hole 243, and thus the injection liquid passage 241 of the injection liquid. Flow through) is blocked.

On the contrary, when the needle holder 31 is slid to the other side of the needle 30, one side of the needle 30 is retracted into the injection chemical flow path 241, and the diameter of one side of the needle 30 gradually decreases. A gap is formed between the inner circumferential surfaces of the injection liquid passage 241, whereby the injection liquid accommodated in the stag groove 231 through the discharge port 288 flows through the injection liquid passage 241 to the outlet hole 243. Can be.

The sealing ring 236 and the support ring 237 are disposed in the sliding groove 235 formed in the valve frame 23. The sealing ring 236 is for sealing between the outer circumferential surface of the sliding protrusion 311 and the inner circumferential surface of the sliding groove 235, and the injection liquid introduced into the sliding groove 235 through the needle supporting hole 234 is the needle holder ( 31) and prevents the outflow through the fine gap formed between the valve frame 23.

The support ring 237 is to fix the position of the sealing ring 236 not to be changed, and is fixedly coupled to the valve frame 23.

As the injection liquid flow path 241 and the outlet hole 243 may be opened and closed by one end of the needle 30 as the needle 30 moves, the valve seat 24 and the needle 30 are a kind of needle. To form a middle valve.

A locking jaw 312 is formed at the edge of the needle holder 31 as shown.

The trigger 33 includes a bar-shaped trigger body 331, and the trigger body 331 protrudes upward from the button coupling protrusion 332 and the trigger body 331, the lever protruding in the direction of the injection hole 271. The movable protrusion 333 is formed, and the operating magnet 334 protruding downward through the bottom of the head frame 22 through the driving hole 225 is installed below the trigger body 331.

The bar-shaped trigger body 331 is supported by the head frame 22 to be slidably moved up and down. Alternatively, the trigger body 331 may be supported by the head cover 21 to be described below, which may be changed as necessary.

The button coupling protrusion 332 may be coupled to the injection button 35, the injection button 35 is beautiful in appearance and easy for the user to the upper end of the trigger body 331 for the operation of the airbrush (1). To apply a force, the injection button 35 and the button engaging projection 332 may be formed integrally as necessary.

The holder movable member 34 has a rotating shaft 341, a holder movable rib 342, and a lever 343, and the holder movable rib 342 has a locking groove 344 having a shape corresponding to the needle holder 31. Is formed. The locking jaw 312 is inserted into the locking groove 344 as shown.

Although not shown in detail, the rotating shaft 341 is formed to protrude to both sides of the holder movable member 34, both ends of the rotating shaft 341 is rotatably supported by the head frame (22). That is, the holder movable member 34 is rotatably supported by the head frame 22 about the rotation shaft 341.

The lever 343 is formed to protrude in one direction of the holder movable member 34. One end of the lever 343 is connected to the rotation shaft 341 and the other end is formed to contact the lower side of the lever movable protrusion 333.

The elastic member 32 is installed to elastically support the needle holder 31 in the injection hole 271 direction. To this end, one end of the elastic member 32 is disposed in contact with the needle holder 31, the other end is arranged to be supported by the head frame 22 or the head cover 21 to be described below.

Therefore, the needle holder 31 is disposed in the direction in which the needle valve described above is closed by the elastic member 32, that is, one side of the needle 30 closes the injection liquid passage 241 and the outlet hole 243. Be sure to

As described above, the needle holder 31 is disposed at a position closest to the outlet hole 243 in a range in which the needle holder 31 is slidably movable with respect to the valve frame 23 by the elastic force of the elastic member 32.

At this time, the holder movable member 34 is disposed so that the other end of the lever 343 is located in the uppermost direction of the movable range as shown in FIG. 5 by connecting the locking jaw 312 and the locking groove 344. The lever movable protrusion 333 is supported by the other end of the lever 343 so that the trigger main body 331 is also disposed at the uppermost side of the vertically movable position.

Therefore, the injection button 35 coupled to the button coupling protrusion 332 of the trigger body 331 is located on the uppermost side of the range that can be moved by the elastic force of the elastic member 32 transmitted through the path as described above.

For reference, the operator magnet 334 is disposed in a position which does not protrude downward through the driving hole 225.

As such, in the state shown in FIGS. 5 and 6, since the air pump 151 of the airbrush 1 does not operate, compressed air is not ejected to the orifice portion 262, and the sump grooves are discharged through the outlet 288. The injection liquid accommodated in 231 does not flow into the outflow hole 243 because the injection liquid flow path 241 is closed by one side of the needle 30.

In addition, the light emitting element (not shown) of the luminaire 19 is also kept off.

FIG. 7 is a vertical cross-sectional view of a part of the air supply module 10 and the injection head 20 when the airbrush 1 shown in FIG. 1 is in operation, and FIG. An enlarged view of the part is shown. It demonstrates with reference to FIG.

4, 7 and 8, the user applies a force in the direction of the arrow to the injection button 35 in order to operate the airbrush (1 in Fig. 1) as shown below the injection button 35 The airbrush 1 is activated by moving in the direction.

As the injection button 35 is moved downward, the trigger main body 331 is moved downward. In this process, the lever 343 is pressed downward by the lever movable projection 333, and the holder movable member 34 is pressed. ) Is rotated about the rotation shaft 341.

Accordingly, the locking jaw 312 connected to the locking groove 344 of the holder movable rib 342 is moved toward the other side of the needle 30, that is, the opposite direction of the injection hole 271, so that the needle holder 31 is shown. As described above, the needle 30 is slidably moved in the direction of the other end of the needle 30.

The elastic member 32 is compressed by the sliding movement of the needle holder 31, and one side of the needle 30 is retracted from the injection liquid passage 241 and the outlet hole 243, so that the injection liquid is the injection liquid passage 241. Through the outflow hole 243 is passed through.

On the other hand, as the trigger body 331 is moved in the downward direction, the operating magnet 334 protrudes downward through the driving hole 225, the operating magnet 334 is close to the switch 171.

Here, a magnetic sensor for detecting the size and direction of the magnetic field or magnetic force line is used as the switch 171, and a permanent magnet is used as the working magnet 334. When the switch 171 detects a magnetic field of a predetermined size or more as the operator magnet 334 approaches, the switch 171 is operated.

That is, when the operating magnet 334 approaches the switch 171 within a predetermined distance, since the power of the battery 16 is supplied to the air supply means 15, the compressed air is discharged from the air pump 151. The discharged compressed air is spouted at high speed through the orifice portion 262 through the air supply hole 222 and the

air supply passages

233 and 261 sequentially.

At this time, the injection liquid which flowed out through the outflow hole 243 is dispersed by the compressed air ejected at high speed from the orifice portion 262 to the outside of the injection head 20 through the injection hole 271 in the form of a mist Sprayed.

In this way, the trigger 33, which was supported by the elastic force of the elastic member 32, is moved downward only by the user pressing the injection button 35. Accordingly, the valve seat 24 and the needle 30 are moved by the valve seat 24 and the needle 30. The formed needle valve and the switch 171 are operated at the same time so that the injection liquid contained in the storage tank 28 is sprayed in the mist state.

On the contrary, when the user releases the force applied to the injection button 35, the shape of the elastic member 32 is restored by the elastic force of the elastic member 32, the needle valve is closed and the operation of the switch 171 is released. Since the state described with reference to FIG. 5 and FIG. 6 is reached, the operation of the airbrush 1 is stopped.

That is, since the airbrush 1 is operated and stopped by one operation of pressing the injection button 35, the outflow of the injection liquid or the operation of the unnecessary air supply means 15 can be prevented.

Therefore, the airbrush 1 has improved convenience in use, prevents the injection liquid from flowing out unnecessarily, minimizes waste of the injection liquid, and at the same time, since the injection liquid does not randomly flow out into the outflow hole 243, hygiene is improved. The power consumption of the battery 16 may be minimized, thereby improving portability.

In addition, unlike the airbrush (not shown) according to the aforementioned Applicant's Patent Publication No. 10-1530424, the airbrush 1 uses the driving magnet 334 to operate the switch 171 in a non-contact manner. Therefore, it is not necessary to form a through hole for the operation of the switch 171 in the upper cover (11).

Therefore, even when the user inadvertently spills liquid such as injection liquid to the upper cover 11 while the airbrush 1 is used, it is possible to minimize the case in which the switch 171 malfunctions or malfunctions due to immersion occur. Since the switch 171 is not damaged by wear or the like even when used for a long time, the effect of extending the life of the airbrush 1 can be expected.

For reference, in order to improve the operational reliability of the airbrush 1, the magnetic field of the driving magnet 334 sensed by the switch 171 when the driving magnet 334 approaches the switch 171 within a predetermined distance. You should be able to have enough strength.

To this end, the upper cover 11 is made of a material such as synthetic resin having a low permeability so that no magnetic path is formed through the upper cover 11, and a magnetic force line caused by the magnetic field of the driving magnet 334 is distorted by the upper cover 11. Can be minimized.

However, although not shown, when the switch 171 is sufficiently waterproof, the switch 171 is installed to penetrate the upper cover 11 or is installed on the upper surface of the upper cover 11 to be more sensitive to magnetic fields. It can also be detected.

As the range where the switch 171 detects the magnetic field is wider, the air supply means may be operated before the needle valve is completely opened in the process of operating the airbrush 1.

At the time when the needle valve starts to open, the width of the injection liquid passage 241 is very narrow so that the injection liquid does not flow out randomly through the outlet hole 243 due to the cohesion force and the adhesion force of the injection liquid.

However, when the viscosity of the injection liquid is low and the degree of opening of the needle valve is further advanced, the liquid injection liquid may be randomly discharged through the outlet hole 243.

Therefore, it is preferable that the air supply means 15 be operated before such any outflow occurs so that the injection liquid is injected into the mist state. To this end, it is necessary to adjust the opening degree of the needle valve and the tuning at the time when the switch 171 is operated to start the operation of the air supply means 15, which can be implemented by adjusting the sensitivity of the switch 171.

On the other hand, the aforementioned head cover 21 is a part forming the outer portion of the injection head 20, the head frame 22, the valve frame 23, the storage tank 28, the trigger 33 and the holder movable member 34 and the like, and the appearance of the injection head 20 can be made beautiful.

When all of the injection liquid contained in the accommodation space 287 of the storage tank 28 is exhausted, the injection liquid may be injected into the accommodation space 287.

To this end, an injection hole 286 for injecting the injection liquid is formed above the storage tank 28. However, when the air inlet 286 is carried and moved while the inlet 286 is open, the injection liquid may flow out of the injection head 20 through the injection hole 286 or the injection liquid may be dried.

Therefore, the injection hole cover 281 may be installed in the injection hole 286 to be opened and closed. The inlet cover 281 may be used to have a variety of structures that can seal the inlet 286, the inlet cover 281 illustrated in the drawings will be described below.

The injection hole cover 281 includes a rotation support pin 282 and a cover body 283, and a vent hole 284 is formed in the cover body 283.

Pinholes

285 and 211 having a diameter corresponding to the rotation support pins 282 are formed on the upper side of the storage tank 28 and the head cover 21 covering the rotation support pins, respectively. 282 may be rotatably inserted and coupled. In addition, a cover seating groove 212 on which the cover body 283 is seated may be formed at an upper side of the head cover 21.

Therefore, when the user wants to inject the injection liquid into the storage tank 28, the cover body 283 is separated from the cover seating groove 212 and rotates the inlet cover 281 around the pivot support pin 282. After the injection hole 286 is exposed, the injection liquid may be introduced into the accommodation space 287 through the exposed injection hole 286.

Vent 284 is to allow the outside air to flow into the receiving space (287). That is, the airbrush 1 is operated to discharge the injection liquid contained in the accommodation space 287 from the accommodation space 287 as it flows to the outlet hole 243 through the slugging groove 231 and the injection liquid passage 241. By allowing the outside air to flow into the receiving space 287 through the vent hole 284 as much as the volume of the injection liquid, the injection liquid flows smoothly.

However, when the diameter of the vent hole 284 is too large, since the injection liquid may flow out through the vent hole 284, in order to prevent this, the vent hole 284 has a suitable diameter in consideration of the viscosity of the spray liquid. It can be formed to have.

However, when the situation where the ventilation is made between the inside and the outside of the accommodation space 287 through the vent 284 lasts for a long time, the injection liquid may be dried.

In order to prevent this, when the airbrush 1 is not operated for a long time, the protective cap 40 is coupled to the spray head 20 so that the vent hole 284 is covered to prevent the spray liquid from drying.

For easy opening and closing of the inlet cover 281, the inlet cover 281 may be made of a flexible material.

For reference, although the inlet cover 281 is not shown, it is separated from the inlet 286 so that the cover body 283 can open and close the inlet 286 without the rotation support pin 282 or pin

holes

211 and 285. It may be configured to be coupled to the head cover 21 in a shape that is possibly inserted. Alternatively, when a part of the cover body 283 is coupled to the cover seating groove 212 formed in the head cover 21 to open the injection hole 286, the cover body 283 is pulled out to cover the other side of the cover body 283. May be made to open the injection hole 286 while the elastic deformation.

On the other hand, if you want to spray a variety of injection liquids using the air brush (1), after replacing the combination of a plurality of injection heads 20 each containing a variety of injection liquid to the air supply module 10, and then air brush ( 1) can be operated to inject each jetting liquid.

Therefore, the airbrush 1 according to the exemplary embodiment of the present invention may be easily selected and used in various types of injection liquids according to the purpose, thereby improving convenience in use.

For reference, in the following description of the airbrush (2, 3, 5) according to the embodiments of the present invention will be described only a portion different from the above-described airbrush (1). In this case, the same reference numerals as the description of the airbrush 1 are given to the same components as the above-described components and operations, and overlapping descriptions thereof will be omitted. In addition, the description and illustration of the protective cap 40 and the cradle 50 are also omitted.

9 is a longitudinal sectional view of a part of the air supply module 20a and the injection head 10a when the airbrush 2 according to another embodiment of the present invention is not operated, and FIG. 10 is shown in FIG. A longitudinal sectional view of a part of the air supply module 20a and the injection head 10a when the airbrush 2 is operated is shown.

The air supply driving protrusion 334a protrudes downward from the lower end of the trigger main body 331 included in the trigger 33 of the airbrush 2.

When the user moves the injection button 35 downward to operate the airbrush 2 as shown in FIG. 10, the lower end of the air supply driving protrusion 334a is driven through the driving hole 225 formed in the head frame 22. It protrudes downward of the headframe 22.

An operating hole 111 is formed in the upper cover 11a that covers the upper side of the injection head 10a. The operation hole 111 is disposed to correspond to the position where the air supply driving protrusion 334a protrudes downward.

The injection head 10a further includes an operation cover 115, and the operation cover 115 covers the operation hole 111 to be sealed. The operation cover 115 is made of an elastic material such as rubber or silicone rubber.

A switch 171a is installed at a portion of the bottom of the upper cover 11a in which the operation hole 111 is formed, and a drive button 172a is provided at the switch 171a. The switch 171a is operated by press-fitting the drive button 172a.

When the injection button 35 is moved downwards and the air supply driving protrusion 334a presses the operation cover 115, the operation cover 115 is elastically deformed and moved downward as shown in FIG. Accordingly, the operation cover 115 presses the driving button 172a.

Therefore, since the air pump 151 is operated by the operation of the switch 171a at the same time as the needle 30 is retracted, the injection liquid contained in the storage tank 28 is injected into the mist state through the injection port 271.

On the contrary, when the user removes the force press-fitting the injection button 35, the trigger 33 is returned to the state shown in FIG. 9 by the elastic force of the elastic member 32, the needle 30 is in the original position and the injection liquid At the same time, the air pump 151 is also stopped from flowing in the direction of the injection hole 271.

For reference, as shown in the bottom of the operation cover 115, a pressing projection protrudes toward the driving button 172a, so that when the air supply driving projection 334a presses the operation cover 115, the driving button 172. This can be made easier to indent.

In addition, the operation cover 115 may be made of a porous body having a closed-cell structure. Here, in the closed cell structure, a plurality of pores constituting the porous are mostly independent of each other, so that the operation cover 115 may have a property that liquid or gas cannot pass through as a whole.

Meanwhile, the air supply driving protrusion 334a may also be made of a material such as rubber, silicone rubber, or soft synthetic resin capable of elastic deformation in a direction parallel to the moving direction, that is, the direction in which the trigger body 331 is moved.

When the operation cover 115 or the air supply drive protrusion 334a or both are formed to have elasticity, the needle 30 retreats completely even though the air supply drive protrusion 334a sufficiently presses the driving button 172a due to manufacturing tolerances. When a case having a length that cannot be achieved occurs, the trigger body 331 is moved until the needle 30 is completely retracted by the elastic deformation of the operation cover 115 and the elastic deformation of the quick start protrusion 334a. Has the advantage that it can.

That is, malfunctions due to tolerances between the components can be prevented by their elastic deformation.

The airbrush 2 described above is intended for use in a place where an interference phenomenon or the like caused by electromagnetic waves is frequently generated, and liquid such as injection liquid is transferred to the operation hole 111 by the operation cover 115. It is possible to prevent the inflow and at the same time the operation reliability can be improved through the operation of the direct switch 171a.

11 is a perspective view of the air supply module 10b and the injection head 20b of the airbrush 3 according to another embodiment of the present invention.

The air supply module 10b of the airbrush 3 may further include a fastening magnet 112b, and the injection head 20b may further include a ferromagnetic material 36b. Although not shown in detail, the fastening magnet 112b may be installed at the bottom of the upper cover 11b, and the ferromagnetic material 36b may be installed at the head frame (see 22 in FIG. 3).

The airbrush 3 is different from the fastening method of the air supply module 10 and the injection head 20 by the operation of the detachment button (36 of FIG. 3) described above, between the fastening magnet 112b and the ferromagnetic material 36b. The air supply module 10b and the injection head 20b are detachably coupled by the acting magnetic force.

This is to prevent wear of the fastening hole 112 due to frequent use of the detachable button 36. That is, even if the air supply 3 is repeatedly used and separates the air supply module 10b and the injection head 20b over a long period of time, the magnetic force between the fastening magnet 112b and the ferromagnetic material 36b is sustained and worn. Since the site is minimized, it is possible to obtain the effect of extending the life of the airbrush (3).

In addition, since the fastening hole 112 does not need to be formed in the upper cover 11b, the motor (152 of FIG. 4), the circuit board (17 of FIG. 4), and the battery 16 due to the penetration of the liquid as described above. Damage to the back can be prevented more effectively.

In addition, since the detachable button 36 is not installed on the injection head 20b, the appearance of the airbrush 3 can be obtained.

For reference, the fastening magnet 112b should be selected and used to have a magnetic force of the appropriate intensity so as not to cause a malfunction of the switch (171 of FIG. 4) which is a magnetic sensor, the air supply module 10b and the injection head 20b Should not be too strong or too weak.

12 to 15 are views for explaining a modification 20c of the spray head 20 shown in FIG.

12 is a perspective view of the injection head 20c and the removable storage tank 60 in which the insertion hole 290 is formed, and FIG. 13 shows the injection head 20c and the storage tank 60 shown in FIG. The longitudinal cross-sectional view of the separated state is shown, FIG. 14 is a longitudinal cross-sectional view showing a state in which the injection head 20c and the storage tank 60 shown in FIG. 12 are coupled, and FIG. 15 and FIG. A perspective view of the valve ring 70 shown in is shown.

First, referring to FIGS. 12 and 13, an insertion hole 290 is formed above the injection head 20c, and a storage tank 60 may be inserted into the insertion hole 290.

Insertion hole 290 is formed by the support frame 227 and the inner frame 226 installed in the head cover 21, as shown, the cross section of the insertion hole 290 is the shape of the cross section of the storage tank 60 It is formed to have a shape corresponding to the. Here, the case where the cross section of the storage tank 60 and the insertion hole 290 is circular is demonstrated.

The storage tank 60 includes a storage tank body 61.

The storage tank body 61 has a receiving space for receiving the injection liquid is formed, one side of the storage tank body 61, the discharge port 66 is formed to be open so that the injection liquid can flow out, the discharge port 66 A fastening protrusion 63 is formed on the outer circumferential surface. On the outer circumferential surface of the storage tank body 61, a ventilation groove 64 extending from the discharge port 66 to the middle portion of the storage tank body 61 is formed as shown.

The neck 62 is formed in a shape in which the diameter decreases toward the portion where the discharge port 66 is formed. The neck 62 is formed according to the viscosity of the injection liquid so that the injection liquid can flow out at an appropriate speed through the discharge port 66. It will have a suitable diameter.

If necessary, the withdrawal knob 65 may protrude from the other side of the storage tank body 61 as shown.

A neck coupling hole 280 into which the neck 62 is inserted is formed in the support frame 227, and a coupling groove 229 corresponding to the fastening protrusion 63 is formed in the neck coupling hole 280. Therefore, the storage tank 60 may be detachably fastened to the injection head 20c by the fastening protrusion 63 and the fastening groove 229.

The inner diameter of the insertion hole 290 is formed to be larger than the outer diameter (R) of the storage tank body 61 so that the storage tank body 61 may be inserted into at least a portion thereof.

On the other hand, the valve ring 70 is formed on the inner peripheral surface of the insertion hole 290, which will be described with reference to FIG.

Referring to FIG. 15, the valve ring 70 includes a valve ring body 71.

The valve ring body 71 is made of an elastic material, the support rib 72 is formed on the outer peripheral portion of the valve ring body 71.

The valve rib 73 protrudes from the inner side of the support rib 72, that is, the center direction, and a through hole 75 is formed in the middle portion of the valve rib 73. At this time, the inner diameter (r) of the through hole 75 is formed smaller than the outer diameter (R) of the storage tank body (61).

The valve rib 73 is formed with a thin film portion 73 whose thickness is thinner than the surroundings, and the number of the thin film portions 73 may be added or subtracted as necessary.

In order to supply the injection liquid to the injection head 20c, the storage tank 60 containing the injection liquid is inserted into the insertion hole 290. At this time, in order to prevent the injection liquid from flowing out randomly through the discharge port 66 by gravity, the discharge port 66 is directed upward, the injection head 20c is turned over and the insertion hole 290 is directed downward. You can do that.

When the storage tank 60 is sufficiently inserted into the insertion hole 290 and the fastening protrusion 63 and the fastening groove 229 are fastened, as shown in FIG. 14.

Subsequently, when the insertion hole 290 of the injection head 20c faces upward again, the injection liquid flows out through the discharge port 66, and thus the injection liquid reaches the needle 30.

Therefore, although not shown, since the needle 30 is retracted when the trigger 33 is moved downward by the user, the injection liquid may flow in the direction of the injection hole 271, and the air supply coupled to the injection head 20c The switch 171 installed in the module (see 10 of FIG. 6) senses the approach of the driving magnet 334 to operate the air pump 151.

Accordingly, the injection liquid contained in the storage tank 60 may be injected through the injection port 271.

For reference, FIGS. 13 and 14 illustrate a structure in which a driving magnet 334 is installed at the lower end of the trigger main body 331 to operate the air supply means 15, which is not shown. However, unlike shown, the injection head 20c may be formed to project the air supply driving projection 334a at the lower end of the trigger body 331 as described above.

In addition, although not shown, the lower end of the trigger body 331 is formed with a longer operation projection than the air supply drive projection 334a, the operating hole 111 in the air supply module 10a illustrated in FIGS. 9 and 10. The operation cover 115 may be omitted so that the lower end portion of the trigger body 331 directly presses the driving button 172a of the switch 171a.

That is, the operation of the switch 171a may be determined according to the depth of the lower side of the trigger body 331 inserted into the operation hole 111.

This is because the injection head 20c does not need to be separated from the air supply module (refer to 10a in FIG. 9) when the injection head 20c is to change the type of injection liquid as described above. This is because the liquid can be replaced, and thus the liquid is supplied through the operating hole 111 even though the operating cover 115 is not installed in the operating hole 111 formed in the upper cover (see 11a of FIG. 9). 10a) it is very unlikely that it will flow into.

On the other hand, the storage tank 60 may be inserted more than a portion into the insertion hole 290. That is, since the storage tank 60 may be changed in length according to its capacity, the storage tank 60 may be completely inserted into the insertion hole 290 or only partially accommodated.

If the storage tank 60 is completely inserted into the insertion hole 290, it may be difficult to withdraw the storage tank 60 from the insertion hole 290 when the storage tank 60 is to be replaced with another type of injection liquid.

The withdrawal handle 65 may be installed or protruded on the other side of the storage tank 60 so as to be easily gripped in this case, and the withdrawal handle 65 may not protrude outside the insertion hole 290 as necessary. It may be formed to be foldable.

Meanwhile, when the discharge port 66 of the storage tank 60 is fastened to the neck coupling hole 280 by the fastening protrusion 63 and the fastening groove 229, the air outside the spray head 290 is stored in the storage tank 60. ) May not be smoothly flowed through the discharge port 66.

The above-mentioned ventilation groove 64 is to prevent this, even when the outlet 66 of the storage tank 60 is fastened to the neck coupling hole 280, the outer peripheral surface and the insertion hole 290 of the storage tank body 61 The air flows into the storage tank 60 through the gap between the inner circumferential surface and the vent groove 64 so that the injection liquid can be smoothly flowed out through the discharge port 66.

However, when the injection head 20c is turned upside down so that the insertion hole 290 faces the direction of gravity, the injection head 20c is injected through a gap between the outer circumferential surface of the storage tank body 61 and the inner circumferential surface of the insertion hole 290 and the ventilation groove 64. There is a risk of liquid leakage, which can be prevented by the valve ring 70.

That is, since the inner diameter r of the through hole 75 formed in the middle portion of the valve ring body 71 is smaller than the outer diameter R of the storage tank body 61 as described above, as shown in FIG. When the storage tank 60 is inserted into the insertion hole 290, the end portion of the valve rib 73 is deformed toward the discharge port 66 and at the same time is in contact with the outer circumferential surface of the storage tank body 61.

Accordingly, the valve rib 73 blocks a flow of external air in the direction of the discharge port 66, but prevents the injection liquid from flowing out of the insertion hole 290 from the discharge port 66 direction. It works.

The thin film portion 74 formed in the valve rib 73 is a portion formed with a very thin thickness compared to other portions, and the thin film portion 74 has air discharge outside the insertion hole 290 during the operation of the check valve described above. 66) to allow more smooth flow.

That is, since the thin film portion 74 is relatively thin in thickness, the deformation of the thin film portion 74 occurs easily during the flow of air between the storage tank body 61 and the end portion of the thin film portion 74, so that air is introduced. The force required to be can be very small.

On the other hand, the thin film portion 74 may also occur more easily in the direction of preventing the injection liquid flows out of the insertion hole 290.

As described above, the injection head 20c requires a relatively high cost to be manufactured by precision machining of the needle 30 and the components constituting the injection hole 271.

Therefore, the injection head 20c may be replaced with a plurality of storage tanks 60, rather than having a plurality of injection heads 20c, when using various types of injection liquids. This reduced effect can be obtained.

16 to 18 are diagrams for explaining the airbrush 5 according to another embodiment of the present invention.

FIG. 16 illustrates an air supply module 10d and an injection head 20d included in the airbrush 5 according to another embodiment of the present invention, and FIG. 17 illustrates an air supply module 10d and an injection head 20d. The longitudinal cross section of this separated state is shown, and FIG. 18 illustrates a longitudinal cross section of the air supply module 10d and the injection head 20d.

16 and 17, the connection hole 116 is formed in the upper cover 11d of the air supply module 10d, and the opening and closing member 117 is installed in the connection hole 116.

The opening and closing member 117 is made of an elastic material, and may have a large elastic deformation range by being made of a porous body having a closed cell structure as described above with the operating cover (115 of FIG. 9).

An incision line 118 is formed in the middle portion of the opening and closing member 117. When no external force is applied to the opening and closing member 117 by the elasticity of the opening and closing member 117, the cut line 118 is closed. maintain.

On the other hand, the air supply pipe 221d protrudes in the lower direction of the head frame 22d below the injection head 20d, and the tip portion 229 is formed at the lower end of the air supply pipe 221d.

Therefore, as shown in FIG. 18, when the injection head 20d is coupled to the air supply module 10d, the tip portion 229 penetrates the incision line 118 to elastically deform the opening / closing member 117 and supplies the air supply pipe. 221d is inserted into the hollow portion of the connecting pipe 14d. Accordingly, the other end of the air supply pipe 221d is connected to the air pump 151 included in the air supply means 15.

As shown, since one side of the air supply pipe 221d is connected to the air supply passage 233, when the air pump 151 is operated, compressed air is supplied into the injection head 20d through the air supply pipe 221d.

As such, the airbrush 5 covers the connection pipe 14d by the opening / closing member 117 when the air supply module 10d and the injection head 20d are separated from each other. Can be prevented from entering into the connecting pipe 14d.

Although the airbrush according to the embodiments of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art to understand the spirit of the present invention are within the scope of the same idea, Other embodiments may be easily proposed by adding, changing, deleting, or adding components, but this is also within the scope of the present invention.

Claims

An air supply module having air supply means for ejecting compressed air when electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module; And

The injection port is formed on one side, a storage tank in which the injection liquid is stored, a needle valve for allowing the injection liquid contained in the storage tank to flow out or shut off to an outlet hole disposed in the injection port, and the needle valve to support the needle air. And a valve frame disposed adjacent to the air supply flow path and the outlet hole through which the air flows, and an orifice portion through which the compressed air passing through the air supply flow path is ejected toward the injection port, and a trigger for simultaneously operating the needle valve and the switch. And an injection head detachably coupled to an upper side of the air supply module.

The injection head further includes a driving magnet installed in a part of the trigger,

The switch is an airbrush that is determined whether or not the operation according to the distance between the drive magnet and the switch by the change of the position of the trigger.
The method of claim 1,

The switch is installed on the bottom of the upper cover,

The upper cover is an air brush made of a low permeability material.
An air supply module having air supply means for ejecting compressed air when electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module; And

The injection port is formed on one side, a storage tank in which the injection liquid is stored, a needle valve for allowing the injection liquid contained in the storage tank to flow out or shut off to an outlet hole disposed in the injection port, and the needle valve to support the needle air. And a valve frame disposed adjacent to the air supply flow path and the outlet hole through which the air flows, and an orifice portion through which the compressed air passing through the air supply flow path is ejected toward the injection port, and a trigger for simultaneously operating the needle valve and the switch. And an injection head detachably coupled to an upper side of the air supply module.

An operation hole is formed in the upper cover,

The injection head further includes an operation cover covering the operation hole and made of an elastic material.

The switch is disposed in close proximity to the operating hole is an airbrush in which the switch is operated according to the degree that the lower end portion of the trigger presses the operation cover by the position change of the trigger.
An air supply module having air supply means for ejecting compressed air when electric power is supplied, a switch for supplying or interrupting the electric power to the air supply means, and an upper cover covering an upper side of the air supply module; And

The injection port is formed on one side, a storage tank in which the injection liquid is stored, a needle valve for allowing the injection liquid contained in the storage tank to flow out or shut off to an outlet hole disposed in the injection port, and the needle valve to support the needle air. And a valve frame disposed adjacent to the air supply flow path and the outlet hole through which the air flows, and an orifice portion through which the compressed air passing through the air supply flow path is ejected toward the injection port, and a trigger for simultaneously operating the needle valve and the switch. And an injection head detachably coupled to an upper side of the air supply module.

The upper cover is formed with an operation hole is inserted into the lower end of the trigger, the switch is disposed close to the operation hole is determined whether the operation is in accordance with the depth that the trigger is inserted into the operation hole,

The storage tank is formed in the receiving space is accommodated in the injection liquid therein and the discharge opening is formed on one side, the discharge opening is directed downward and is detachably fastened to the upper side of the valve frame,

And an injection hole formed in the injection head to insert at least a portion of the storage tank when the discharge port is fastened to the valve frame.
The method of claim 4, wherein

The injection head,

It is made of an elastic material, the outer circumference is fixed to the inner circumferential surface of the insertion hole, the through-hole is formed in the middle of the diameter smaller than the storage tank and the diameter of the outer periphery of the ring shape having a valve rib larger than the storage tank An airbrush further comprising a valve ring.
The method of claim 5,

A portion of the valve rib is formed with a thinner thinner than the other airbrush.
The method of claim 4, wherein

An air brush having a ventilation groove formed at an outer circumferential surface of the storage tank and having one end portion reaching a portion where the discharge port is formed.
The method of claim 7, wherein

A fastening magnet installed on the upper cover; And

An airbrush further comprising; a ferromagnetic material installed in the injection head.
The method of claim 7, wherein

The injection head further includes a supply pipe having one side connected to the air supply passage, the other side protruding downward, and the other end formed with a tip portion.

The upper cover is formed with a connection hole,

The air supply module further includes an opening and closing member made of an elastic material and installed in the connection hole to seal the connection hole.

An incision line is formed in the opening and closing member so that when the air supply module and the injection head are coupled, the incision line penetrates by the tip portion, and the other side of the air supply pipe is connected to the air supply means.
The method of claim 9,

The opening and closing member is made of a porous body having a closed cell structure

Airbrush.