A handheld airbrush

Abstract

The present invention discloses a handheld airbrush, comprising a shell; a nozzle assembly is arranged in the head of the shell, and a gas channel, a liquid channel, an air pump and a piston assembly are arranged in the shell; the gas outlet end of the gas channel and the liquid outlet end of the liquid channel are both arranged on the nozzle assembly; the piston of the piston assembly is connected with a spray needle, and the end of the spray needle blocks the liquid outlet end of the liquid channel on the nozzle assembly; the pen head is provided with a first joint for connecting with a liquid container, and the first joint is connected with the liquid channel; the air pump provides an air source for the gas channel; when the piston is pushed by the air pressure in the gas channel to move away from the nozzle assembly, it can drive the spray needle to open the liquid outlet end of the liquid channel. The handheld airbrush has a simple structure, can be operated with one hand, and is very convenient to use.

Description

Technical Field

[0001] The invention relates to the technical field of spraying tools, and more specifically to a handheld spray pen. Background Art

[0002] The State Intellectual Property Office has published a utility model patent with the patent number CN204996622U, and the patent name is a siphon-type airbrush, which includes a front handle, a tail handle, a spray needle, a nozzle, a nozzle, an air inlet valve and a nozzle seat. The front handle and the tail handle are connected to form a pen body, a receiving cavity is formed inside the pen body, a spray needle is arranged in the receiving cavity, a siphon channel is arranged in the front handle, an air inlet valve is arranged in the middle of the pen body, the rear end of the nozzle seat is threadedly connected to the front handle, the front end of the nozzle seat is threadedly connected to the nozzle, the nozzle includes a nozzle body, the nozzle body is arranged between the nozzle head and the nozzle seat, the front end of the nozzle body is extended to be provided with a nozzle tip, the center of the nozzle seat is provided with an axial through hole, the siphon channel is connected with the axial through hole, the front end of the spray needle passes through the axial through hole and the nozzle body and extends into the nozzle tip. This type of spray gun needs to be operated with both hands, that is, one hand holds the gun body, and the other hand pulls the trigger to control the switch of the spray gun, which is very inconvenient to use, and the internal structure of the spray gun is also relatively complicated. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a handheld airbrush, which has a simple structure, can be operated with one hand, and is very convenient to use.

[0004] The technical solution of the present invention is to provide a handheld airbrush with the following structure, including a shell; a nozzle assembly is arranged in the head of the shell, and a gas channel, a liquid channel, an air pump and a piston assembly are arranged in the shell; the gas outlet end of the gas channel and the liquid outlet end of the liquid channel are both arranged on the nozzle assembly; the piston of the piston assembly is connected to a spray needle, and the end of the spray needle blocks the liquid outlet end of the liquid channel on the nozzle assembly; a first joint for connecting to a liquid container is provided on the pen head, and the first joint is connected to the liquid channel; the air pump provides an air source for the gas channel; when the piston is pushed by the air pressure in the gas channel to move away from the nozzle assembly, it can drive the spray needle to open the liquid outlet end of the liquid channel.

[0005] After adopting the above structure, the handheld airbrush of the present invention has the following advantages compared with the prior art:

[0006] Since the head of the shell of the handheld airbrush of the present invention is provided with a nozzle assembly, the shell is provided with a gas channel, a liquid channel, an air pump and a piston assembly; the air pump provides an air source for the gas channel; when the piston is pushed by the air pressure in the gas channel to move away from the nozzle assembly, it can drive the spray needle to open the liquid outlet end of the liquid channel; when in use, mist can be sprayed by pressing the switch to start the air pump, the structure is simple, it can be operated with one hand, and it is very convenient to use.

[0007] As an improvement, the housing includes a pen tip and a pen body, the pen tip is connected to one end of the pen body; the nozzle assembly is arranged on the head of the pen tip, the gas channel and the liquid channel are arranged in the pen tip; the piston assembly and the air pump are arranged in the pen body, and the air outlet of the air pump is connected to the gas channel through a channel. After adopting this structure, the structure is simple and easy to assemble.

[0008] As an improvement, the piston assembly includes a piston seat and a piston. The piston is installed in the cavity of the piston seat so as to move back and forth. The end of the cavity of the piston close to the nozzle assembly is connected to the gas channel. A return spring is provided between the piston and the base of the cavity. The spray needle extends into the nozzle assembly after passing through the liquid channel. When there is airflow in the gas channel, the piston moves away from the nozzle assembly and the return spring is compressed. When there is no airflow in the gas channel, the return spring pushes the piston back. After adopting this structure, since the end of the cavity of the piston close to the nozzle assembly is connected to the gas channel, the gas channel can push the piston to move back and forth after the airflow is filled, thereby driving the spray needle to open the liquid outlet of the nozzle. The structure is simple and the control is sensitive and convenient.

[0009] As an improvement, a piston connector is provided between the piston seat and the air pump, an air pipe is provided on the piston connector, the inner cavity of the air pipe is the channel, one end of the air pipe is connected and communicated with the air outlet of the air pump, and the other end of the air pipe is communicated with the gas channel. With this structure, the air outlet of the air pump and the gas channel are connected by the air pipe, and the air pipe is installed in the piston connector, which has a simple structure, is easy to assemble, and has a compact structure.

[0010] As an improvement, a connection seat is provided in the pen tip, and the connection seat is installed between the nozzle assembly and the piston seat; the gas channel and the liquid channel are provided on the connection seat; the connection seat is provided with a first mounting hole, and the first mounting hole is connected to the liquid channel, and the first joint is installed in the first mounting hole. With this structure, the gas channel and the liquid channel are provided in the connection seat, and the nozzle assembly is installed on the connection seat, so that the structure in the pen tip is simple and compact, and the assembly is more convenient.

[0011] As an improvement, the first joint includes a first valve body, a first valve core is movably connected in the axial hole of the first valve body along the axial direction of the first valve body, a first sealing member is provided at one end of the first mounting hole close to the liquid channel, the first valve body is connected in the first mounting hole, a first spring is provided between one end of the first valve core and the first sealing member, the end surface of the other end of the first valve core is against the sealing surface of the first valve body, and a first ejector pin is provided at the other end of the first valve core and the first ejector pin passes through the axial hole of the first valve body and is exposed outside the first valve body. After adopting this structure, since the first ejector pin is provided at the other end of the first valve core and the first ejector pin passes through the axial hole of the first valve body and is exposed outside the first valve body, when the first valve body is connected to the interface of the liquid container, the interface of the liquid container can push the first ejector pin to push the first valve core open, so that the liquid container is connected to the liquid channel; after the liquid container is removed, the first valve core is closed again, which can prevent dust or impurities from entering the liquid channel.

[0012] As an improvement, the connection base is provided with a second mounting hole, the second mounting hole is connected to the gas channel, and the second mounting hole is provided with a second connector for an external air pump. With this structure, the second connector can be connected to an external air pump, and when the air pump in the housing is insufficient in air supply, the external air pump can provide an air source.

[0013] As an improvement, the second joint includes a second valve body, a second valve core is movably connected in the axial hole of the second valve body along the axial direction of the second valve body, a second sealing member is provided at one end of the second mounting hole close to the gas channel, the second valve body is connected in the second mounting hole, a second spring is provided between one end of the second valve core and the second sealing member, the end face of the other end of the second valve core is against the sealing surface of the second valve body, and a second ejector is provided at the other end of the second valve core and the second ejector passes through the axial hole of the second valve body and is exposed outside the second valve body. After adopting this structure, since the second end of the second valve core is provided with a second ejector and the second ejector passes through the axial hole of the second valve body and is exposed outside the second valve body, when the second valve body is connected to the interface of the external air pump, the interface of the external air pump can support the second ejector to push the second valve core open, so that the external air pump is connected to the liquid channel; after removing the external air pump, the second valve core is closed again, which can prevent dust or impurities from entering the gas channel.

[0014] As an improvement, the nozzle assembly includes a nozzle and a nozzle, the nozzle is arranged in the nozzle and the end of the nozzle is exposed outside the nozzle, the head of the nozzle is provided with a gas outlet, and the nozzle is provided with an air chamber; the nozzle is connected to one side of the connection seat, the air chamber is connected to the gas channel, the inner cavity of the nozzle is connected to the liquid channel, and the end of the spray needle extends into the nozzle to block the liquid outlet of the nozzle. After adopting this structure, the nozzle assembly has a simple structure and is easy to assemble.

[0015] As an improvement, the nozzle is connected to an end cap, a gas-liquid mixing chamber is provided inside the end cap, a liquid spraying port is provided at the front end of the end cap, and the liquid spraying port is connected to the gas-liquid mixing chamber. With this structure, the sprayed gas and liquid are mixed more evenly in the gas-liquid mixing chamber, and the mist sprayed from the liquid spraying port is more delicate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the handheld airbrush of the present invention.

[0017] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure in the AA direction.

[0018] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part B.

[0019] Figure 4 The figure is a schematic diagram of the explosion structure of the handheld airbrush of the present invention.

[0020] Figure 5The figure is a schematic three-dimensional structure diagram of the connecting base of the handheld airbrush of the present invention.

[0021] Figure 6 The figure is a schematic three-dimensional structure diagram of the connecting base of the handheld airbrush of the present invention from another angle.

[0022] Figure 7 The figure is a schematic diagram of the three-dimensional structure of the nozzle of the handheld airbrush of the present invention.

[0023] Figure 8 The figure is a schematic three-dimensional structure diagram of the nozzle of the handheld airbrush of the present invention from another angle.

[0024] As shown in the figure: 1. air pump, 101. air pump switch, 2. pen body, 201. first hole, 202. second hole, 3. nozzle cover, 4. connecting seat, 401. gas channel, 402. liquid channel, 403. mounting sleeve, 404. first sealing ring groove, 405. first mounting hole, 406. second mounting hole, 407. second sealing ring groove, 5. end cover, 501. liquid spray port, 502. gas-liquid mixing chamber, 6. nozzle, 601. air chamber, 602. gas outlet, 603. guide surface, 7. nozzle, 701. limiting convex ring, 8. first sealing ring, 9. first joint, 901. first valve body, 90 2. The first valve core, 903. The first sealing member, 904. The first spring, 905. The first ejector pin, 10. The second connector, 1001. The second valve body, 1002. The second valve core, 1003. The second sealing member, 1004. The second spring, 1005. The second ejector pin, 11. The piston seat, 1101. The cavity, 1102. The limiting step, 12. The piston, 1201. The connecting column, 13. The limiting frame, 1301. The central through hole, 14. The return spring, 15. The spray needle, 16. The second sealing ring, 17. The piston connector, 1701. The groove, 1702. The air path, 18. The air pipe, 19. The pen tip cover. DETAILED DESCRIPTION

[0025] In order to better understand the present application, a more detailed description of various aspects of the present application will be made with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application, and do not limit the scope of the present application in any way. Throughout the specification, the same figure numerals refer to the same elements.

[0026] In the drawings, the thickness, size and shape of objects have been slightly exaggerated for ease of explanation. The drawings are only examples and are not drawn strictly to scale.

[0027] It should also be understood that the terms “comprises,” “including,” “has,” and “contains,” when used in this specification, indicate the presence of the described features, integers, steps, operations, elements, and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts, and / or combinations thereof.

[0028] like Figures 1 to 8 As shown, the present invention discloses a handheld airbrush, comprising a housing, an air pump 1, a piston assembly and a nozzle assembly. The housing comprises a pen head and a pen body 2, the pen head is connected to one end of the pen body 2, and a mounting cavity is formed in the pen head and the pen body 2. The nozzle assembly is mounted in the mounting cavity of the pen head, and the air pump 1 and the piston assembly are mounted in the mounting cavity of the pen body 2.

[0029] The pen tip comprises a nozzle cover 3, a connection seat 4 and an end cap 5. The nozzle cover 3 is fixedly connected to one side of the connection seat 4, and a nozzle assembly installation cavity is formed between the nozzle cover 3 and the connection seat 4. The nozzle assembly comprises a nozzle 6 and a nozzle 7. An air chamber 601 is provided in the middle of the nozzle 6, and a gas outlet 602 is provided in the middle of a side wall of the nozzle 6, and the gas outlet 602 is connected to the air chamber 601. A trumpet-shaped guide surface 603 is provided at the front end of the nozzle 6, and the guide surface 603 is provided at the periphery of the gas outlet 602. The nozzle 7 is installed in the air chamber 601, and the head of the nozzle 7 passes through the gas outlet 602 and is exposed outside the gas outlet 602, and a gap for gas discharge is formed between the side wall of the head of the nozzle 7 and the inner wall of the gas outlet 602. An opening is provided at one end of the end cap 5, and the other end of the end cap is a closed structure, and a liquid spraying port 501 is provided in the middle of the closed end of the end cap 5. The open end of the end cover 5 is buckled on the nozzle cover 3 , a gas-liquid mixing chamber 502 is formed between the end cover 5 and the nozzle cover 3 , and the liquid spraying port 501 is connected to the gas-liquid mixing chamber 502 .

[0030] The connection seat 4 is provided with a gas channel 401 and a liquid channel 402. The liquid channel 402 is provided in the middle of the connection seat 4. The gas channel 401 is provided on one side of the connection seat 4. The gas channel 401 and the liquid channel 402 are two independent channels and are arranged parallel to each other. A mounting sleeve 403 is provided on the side of the connection seat 4 close to the nozzle 7. One end of the nozzle 7 close to the mounting sleeve 403 is inserted into the mounting sleeve 403. A limiting convex ring 701 is provided on the outer wall of the nozzle 7. The end face of the mounting sleeve 403 abuts against the limiting convex ring 701. The end face of the mounting sleeve 403 is provided with a first sealing ring groove 404, a first sealing ring 8 is provided in the first sealing ring groove 404 and the first sealing ring 8 is sleeved outside the mounting sleeve 403, and the first sealing ring 8 is used to seal between the mounting sleeve 403 and the side wall of the first sealing ring groove 404 to prevent the liquid in the liquid channel 402 from leaking.

[0031] A first mounting hole 405 and a second mounting hole 406 are respectively provided on both sides of the side wall of the connection seat 4. The first mounting hole 405 is connected to the liquid channel 402, and the second mounting hole 406 is connected to the gas channel 401. A first joint 9 is installed in the first mounting hole 405, and the first joint 9 is used to connect a liquid container. The first joint 9 includes a first valve body 901, and a first valve core 902 is movably connected to the axial direction of the first valve body 901 in the axial hole of the first valve body 901. A first sealing member 903 is provided at one end of the first mounting hole 405 close to the liquid channel 402. The first valve body 901 is connected to the first mounting hole 405. In this specific embodiment, the first valve body 901 is threadedly connected to the first mounting hole 405. A first spring 904 is provided between one end of the first valve core 902 and the first sealing member 903, the end surface of the other end of the first valve core 902 abuts against the sealing surface of the first valve body 901, and a first ejector pin 905 is provided at the other end of the first valve core 902 and the first ejector pin 905 passes through the axial hole of the first valve body 901 and is exposed outside the first valve body 901. A second connector 10 is installed in the second mounting hole 406, and the second connector 10 is used to connect an external air pump. The second joint 10 includes a second valve body 1001, in which a second valve core 1002 is movably connected along the axial direction of the second valve body 1001 in the axial hole of the second valve body 1001, a second sealing member 1003 is provided at one end of the second mounting hole 406 close to the gas channel 401, the second valve body 1001 is threadedly connected in the second mounting hole 406, a second spring 1004 is provided between one end of the second valve core 1002 and the second sealing member 1003, the end face of the other end of the second valve core 1002 is against the sealing surface of the second valve body 1001, and a second ejector pin 1005 is provided at the other end of the second valve core 1002, and the second ejector pin 1005 passes through the axial hole of the second valve body 1001 and is exposed outside the second valve body 1001.

[0032] The piston assembly includes a piston seat 11 and a piston 12. One side of the piston seat 11 is fixedly connected to the other side of the connecting seat 4. A cavity 1101 is provided in the middle of the end surface of the piston seat 11 close to the connecting seat 4, and the piston 12 is installed in the cavity 1101 to move back and forth. A limiting frame 13 is provided at the end of the cavity, and a limiting step 1102 for installing the limiting frame 13 is provided at the end of the cavity. The limiting frame 13 is installed on the limiting step 1102, and the limiting frame 13 is used to limit the piston 12 in the cavity. The limiting frame 13 is clamped between the limiting step 1102 of the piston seat 11 and the end surface of the connecting seat 4. The cavity is connected to the gas channel 401 on the side of the piston 12 close to the connecting seat 4. When there is gas in the gas channel 401, the gas will pass through the limiting frame 13 to push the piston 12 in the cavity to move away from the connecting seat 4. A return spring 14 is provided between the piston 12 and the bottom of the cavity. A spray needle 15 is fixedly connected to the side of the piston 12 close to the connecting seat 4. The spray needle 15 passes through the central through hole 1301 of the limiting frame 13 and then extends into the liquid channel 402. The head of the spray needle 15 blocks the liquid outlet of the nozzle 7. A second sealing ring groove 407 is provided on the side of the connecting seat 4 close to the limiting frame 13. A second sealing ring 16 is provided in the second sealing ring groove 407 and the second sealing ring 16 is sleeved outside the spray needle 15. The second sealing ring 16 is sealed between the spray needle 15 and the side wall of the second sealing ring groove 407 to prevent the liquid in the liquid channel 402 from leaking out.

[0033] The other side of the piston seat 11 is connected to a piston connector 17, and a groove 1701 is provided in the middle of the end surface of the piston connector 17 near the piston seat 11. A through hole is provided in the middle of the bottom of the cavity, and a hollow connecting column 1201 is provided on the side of the piston 12 near the through hole, and the return spring 14 is sleeved outside the connecting column 1201. The groove 1701 is aligned with the through hole, and when the piston 12 moves, the connecting column 1201 can pass through the through hole and extend into the groove 1701. The side of the piston connector 17 away from the piston seat 11 is connected to the gas outlet end of the air pump 1. The piston connector 17 is provided with a gas path 1702 connected to the gas outlet of the air pump 1, and the gas outlet of the gas path 1702 is connected to the gas pipe 18, and the end of the gas pipe 18 away from the gas outlet of the gas path 1702 is connected to the gas inlet of the gas channel 401 of the connecting seat 4.

[0034] An air pump switch 101 is provided on the side wall of the pen body 2, and the air pump switch 101 is connected to the air pump 1 control mechanism. The port of the pen body 2 extends upward and is sleeved outside the connecting seat 4. A first hole 201 and a second hole 202 are provided on the side wall of the extended end of the port of the pen body 2. The first hole 201 and the second hole 202 are aligned with the first connector 9 and the second connector 10 respectively. A pen tip cover 19 is also connected to the port of the pen body 2, and the pen tip cover 19 is used to cover the pen tip.

[0035] When the handheld airbrush of the present invention is used, the pen tip cover 19 is opened to expose the pen tip, and a liquid container is connected to the first joint 9. The liquid container can contain beauty liquid, disinfectant, etc. Then, the air pump switch 101 is pressed to start the air pump 1. The gas blown out by the air pump 1 is filled into the gas channel 401. Driven by the air pressure in the gas channel 401, the piston 12 drives the spray needle 15 to move away from the nozzle 7. The spray needle 15 leaves the liquid outlet of the nozzle 7 to open the liquid channel 402. The gas flows through the air chamber 601 of the nozzle 6 along the gas channel 401, and then blows out from the gas outlet 602. At this time, a negative pressure is formed at the head of the nozzle 7, and the liquid in the liquid channel 402 is sucked out by the siphon effect. The gas and the liquid are mixed in the gas-liquid mixing chamber 502 in the end cover 5, and then sprayed out from the liquid spray outlet 501. If the gas supply of the built-in air pump 1 is insufficient, an external air pump can be connected to the second joint 10, and the external air pump can be started, and the external air pump can transport gas into the gas channel 401.

Claims

1. A handheld airbrush, comprising a shell; characterized in that: a nozzle assembly is arranged in the head of the shell, and a gas channel, a liquid channel, an air pump and a piston assembly are arranged in the shell; the gas outlet end of the gas channel and the liquid outlet end of the liquid channel are both arranged on the nozzle assembly; the piston of the piston assembly is connected with a spray needle, and the end of the spray needle blocks the liquid outlet end of the liquid channel on the nozzle assembly; a first joint for connecting to a liquid container is arranged on the pen head of the shell, and the first joint is connected to the liquid channel; the air pump provides an air source for the gas channel; when the piston is pushed by the air pressure in the gas channel to move away from the nozzle assembly, it can drive the spray needle to open the liquid outlet end of the liquid channel; The housing includes a pen tip and a pen body, wherein the pen tip is connected to one end of the pen body; the nozzle assembly is arranged in the head of the pen tip, and the gas channel and the liquid channel are arranged on the pen tip; the piston assembly and the air pump are arranged in the pen body, and the air outlet of the air pump is connected to the gas channel through a channel; The pen tip is provided with a connecting seat, which is installed between the nozzle assembly and the piston seat; the gas channel and the liquid channel are provided on the connecting seat; the connecting seat is provided with a first mounting hole, which is connected to the liquid channel, and the first joint is installed in the first mounting hole; The first joint comprises a first valve body, a first valve core is movably connected to the axial hole of the first valve body along the axial direction of the first valve body, a first sealing member is provided at one end of the first mounting hole close to the liquid passage, the first valve body is connected to the first mounting hole, a first spring is provided between one end of the first valve core and the first sealing member, the end face of the other end of the first valve core is against the sealing face of the first valve body, a first ejector is provided at the other end of the first valve core and the first ejector passes through the axial hole of the first valve body and is exposed outside the first valve body; The connecting seat is provided with a second mounting hole, the second mounting hole is communicated with the gas passage, and a second connector for connecting to an external air pump is provided in the second mounting hole.

2. The handheld airbrush according to claim 1, characterized in that : The piston assembly includes a piston seat and a piston, the piston is movably installed in the cavity of the piston seat, the cavity of the piston is connected to the gas channel at one end close to the nozzle assembly, a return spring is provided between the piston and the cavity base, the spray needle passes through the liquid channel and extends into the nozzle assembly; when there is airflow in the gas channel, the piston moves away from the nozzle assembly and the return spring is compressed; when there is no airflow in the gas channel, the return spring pushes the piston back.

3. The handheld airbrush according to claim 2, characterized in that : A piston connector is provided between the piston seat and the air pump, an air pipe is provided on the piston connector, the inner cavity of the air pipe is the channel, one end of the air pipe is connected and communicated with the air outlet of the air pump, and the other end of the air pipe is communicated with the gas channel.

4. The handheld airbrush according to claim 1, characterized in that :The second joint includes a second valve body, a second valve core is movably connected to the axial direction of the second valve body in the axial hole of the second valve body, a second sealing member is provided at one end of the second mounting hole close to the gas channel, the second valve body is connected to the second mounting hole, a second spring is provided between one end of the second valve core and the second sealing member, the end face of the other end of the second valve core is against the sealing surface of the second valve body, a second ejector pin is provided at the other end of the second valve core and the second ejector pin passes through the axial hole of the second valve body and is exposed outside the second valve body.

5. The handheld airbrush according to any one of claims 1 to 4, characterized in that :The nozzle assembly includes a nozzle and a nozzle, the nozzle is arranged in the nozzle and the end of the nozzle is exposed outside the nozzle, the head of the nozzle is provided with a gas outlet, and the nozzle is provided with an air chamber; the nozzle is connected to one side of the connecting seat, the air chamber is connected to the gas channel, the inner cavity of the nozzle is connected to the liquid channel, and the end of the spray needle extends into the nozzle to block the liquid outlet of the nozzle.

6. The handheld airbrush according to claim 5, characterized in that The nozzle is externally connected to an end cap, a gas-liquid mixing chamber is disposed inside the end cap, a liquid spray port is disposed at the front end of the end cap, and the liquid spray port is connected to the gas-liquid mixing chamber.

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