Spraying pen with quick-insertion type nozzle

Abstract

The utility model relates to an air brush with a quick-insertion type nozzle. Comprising a handle body, a needle valve assembly arranged in the handle body, a nozzle located on the front side of the needle valve assembly, a control rod linked with the needle valve assembly, a swing piece located on the needle valve assembly and linked with the control rod, an air receiving head located at the bottom of the handle body, an elastic piece arranged in the handle body and used for driving the needle valve assembly to reset, and a material cup located above the handle body. A gas channel communicated with the gas receiving head and a pigment channel communicated with the material cup are arranged in the handle body, the nozzle assembly is sleeved with the nozzle, the needle valve assembly comprises an ejector pin axially extending left and right, the front side of the nozzle abuts against the nozzle assembly, the rear side of the nozzle abuts against the handle body, and the nozzle assembly is detachably connected with the front side of the handle body. The nozzle assembly, the nozzle and the ejector pin are concentrically arranged. By the adoption of the scheme, the spray pen with the fast-inserting type spray nozzle is provided, the spray nozzle assembly and the handle body are connected by installing the spray nozzle into the spray nozzle assembly, concentricity of the spray nozzle assembly, the handle body and the spray nozzle assembly can be achieved, and convenience is provided for disassembly and assembly.

Description

Technical Field

[0001] This utility model relates to airbrushes, and more particularly to an airbrushe with a quick-connect nozzle. Background Technology

[0002] Airbrushes are widely used painting tools in many fields such as industrial production and artistic creation. Their working principle is to use compressed air provided by an external air source (such as an air compressor or air pump) to create negative pressure at the nozzle, which draws out the pigment from the pigment can and atomizes it before spraying it out to coat the surface of an object. Its core performance depends on the concentricity of the nozzle, needle, and airflow channel. Only when the axes of the three are completely aligned can the compressed air be accurately mixed and atomized with the pigment to achieve a uniform and delicate spraying effect.

[0003] If the concentricity of the components inside the nozzle assembly is difficult to guarantee, it will lead to uneven mixing of airflow and pigment, resulting in problems such as poor spray atomization and irregular spray patterns. Moreover, during long-term use, the nozzle assembly components are prone to displacement due to factors such as vibration, causing changes in concentricity. While an integrated design can guarantee the concentricity of both components, it cannot be disassembled when the nozzle is damaged or needs cleaning. Therefore, how to enable the nozzle assembly to be quickly installed into the handle and ensure concentricity has become a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an airbrush with a quick-connect nozzle, which achieves concentricity of the airbrush assembly and handle body by inserting the nozzle into the airbrush assembly, thus facilitating the assembly and disassembly of the three components.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a handle, a needle valve assembly disposed within the handle, a nozzle located at the front of the needle valve assembly, a control rod linked to the needle valve assembly, a swing plate located on the needle valve assembly and linked to the control rod, an air inlet at the bottom of the handle, an elastic element disposed within the handle to drive the needle valve assembly to reset, and a material cup located above the handle. The handle contains a gas channel communicating with the air inlet and a pigment channel communicating with the material cup. It also includes a nozzle assembly fitted with a nozzle. The needle valve assembly includes a pin extending axially to the left and right. The front side of the nozzle abuts against the nozzle assembly, and the rear side abuts against the handle. The nozzle assembly is detachably connected to the front side of the handle. The nozzle assembly, nozzle, and pin are concentrically arranged.

[0006] The present invention is further configured such that: the nozzle includes a working section and a positioning section, the positioning section is located behind the working section, the working section is circumferentially fitted with a ventilation part, and the ventilation part includes a plurality of protrusions and a ventilation groove located between adjacent protrusions.

[0007] The present invention is further configured such that: a mounting ring is provided around the circumference of the positioning section of the handle body, the mounting ring is provided with a positioning hole for the positioning section to be inserted, and a limiting ring is provided around the circumference of the positioning section, the diameter of the limiting ring being larger than the diameter of the positioning hole.

[0008] The present invention is further configured such that: the nozzle assembly includes a fixed section into which the handle is inserted and a mating section located on the front side of the handle, the rear end face of the mating section abuts against the handle, and the fixed section is provided with a first threaded section in the circumferential direction, the first threaded section being threadedly engaged with the handle.

[0009] The present invention is further configured such that: the mating section is provided with an installation groove for inserting the nozzle, and the front side of the venting part abuts against the mating section.

[0010] The present invention is further configured such that: the fixed segment is a flared frustum from front to back and is provided with a contact ring in the circumferential direction, and the contact ring is provided with contact texture.

[0011] The present invention is further configured such that: the nozzle assembly further includes a mounting base located on the front side of the mating section, the mating section is provided with a second threaded section, and the mounting base is threadedly engaged with the second threaded section.

[0012] By adopting the above technical solution, after the printhead assembly and nozzle are assembled together and then installed into the handle, the printhead assembly, nozzle, and ejector pin are concentrically set. Therefore, after the assembly of the nozzle, printhead assembly, and handle is completed, the position of the nozzle on the airbrush is determined. At the same time, the concentricity of the three eliminates the need to manually determine their axes and ensures that the ink is sprayed out stably when the airbrush is in use. Meanwhile, when the nozzle needs to be replaced, it can be removed by separating the printhead assembly from the handle, which facilitates maintenance and cleaning. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is an assembly drawing illustrating a specific embodiment of the present utility model;

[0015] Figure 2 An exploded view of the nozzle assembly and the airbrush;

[0016] Figure 3 This is a cross-sectional view of a specific embodiment of the present utility model;

[0017] Figure 4 for Figure 1 Enlarged view of A in the middle;

[0018] Figure 5 for Figure 3 A magnified view of B in the middle.

[0019] In the diagram: 1-Handle body, 11-Mounting ring, 111-Positioning hole, 12-Gas channel, 13-Pigment channel;

[0020] 2-Needle valve assembly, 21-Ejector pin;

[0021] 3-Nozzle, 31-Working section, 311-Ventilation section, 3111-Protrusion, 3112-Ventilation groove, 32-Positioning section, 321-Limiting ring;

[0022] 4-Control lever;

[0023] 5-Schedule pieces;

[0024] 6- Connector;

[0025] 7-Elastic element;

[0026] 8-Milk cup;

[0027] 9- Nozzle assembly, 91- Fixed section, 911- First threaded section, 912- Contact ring, 9121- Contact texture, 92- Mating section, 921- Mounting groove, 922- Second threaded section, 93- Mounting seat. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-5As shown, this utility model discloses an airbrush with a quick-connect nozzle, including a handle 1, a needle valve assembly 2 disposed within the handle 1, a nozzle 3 located in front of the needle valve assembly 2, a control lever 4 linked to the needle valve assembly 2, an S-shaped oscillating plate 5 located on the needle valve assembly 2 and linked to the control lever 4, an air inlet 6 located at the bottom of the handle 1, an elastic element 7 disposed within the handle 1 to drive the needle valve assembly 2 to reset, and a material cup 8 located above the handle 1. The handle 1 contains a gas channel 12 communicating with the air inlet 6 and a pigment channel 13 communicating with the material cup 8. 8 is used to hold pigment, and the air inlet 6 is used to connect to an external air compressor. In this embodiment, the elastic element 7 is a spring. When the airbrush needs to be used, pulling the control lever 4 backward causes the swing plate 5 to move backward and away from the nozzle 3, driven by the control lever 4. At the same time, the elastic element 7 is compressed. At this time, the air pressure moves from the gas channel 12 towards the nozzle 3, and the pigment moves from the pigment channel 13 towards the nozzle 3, so that the pigment is sprayed out from the nozzle 3 under the action of air pressure. When the force applied to the control lever 4 is released, the elastic element returns to its original state due to its own elasticity. The needle valve assembly 2 is moved forward by the downward reset mechanism, thus engaging with the nozzle 3. At this point, the pigment cannot be ejected (this is prior art and will not be described in detail here). The system also includes a nozzle assembly 9 that houses the nozzle 3. The needle valve assembly 2 includes a pin 21 extending axially to the left and right. The front side of the nozzle 3 abuts against the nozzle assembly 9, and the rear side abuts against the handle 1. The nozzle assembly 9 and the front side of the handle 1 are detachably connected by threads, magnetism, or other means. The nozzle assembly 9, nozzle 3, and pin 21 are concentrically arranged. By assembling the nozzle assembly 9 and nozzle 3 together, and then... After the nozzle is installed into the handle 1, the nozzle assembly 9, the nozzle 3, and the ejector pin 21 are concentrically set. Therefore, after the assembly of the nozzle 3, the nozzle assembly 9, and the handle 1 is completed, the position of the nozzle 3 on the airbrush is determined. At the same time, the concentricity of the three eliminates the need to manually determine their axes and allows the ink to be sprayed out stably when the airbrush is in use. Meanwhile, when the nozzle 3 needs to be replaced, it can be removed by separating the nozzle assembly 9 from the handle 1 for easy maintenance and cleaning, thereby realizing quick insertion of the nozzle 3 and the nozzle assembly 9 in the airbrush.

[0030] The nozzle 3 includes a working section 31 and a positioning section 32. The positioning section 32 is located behind the working section 31. The working section 31 is circumferentially fitted with a ventilation section 311. The ventilation section 311 includes a plurality of protrusions 3111 and ventilation grooves 3112 located between adjacent protrusions 3111. The arrangement of each ventilation groove 3112 allows the air compressor / air pump to move forward along each ventilation groove 3112 on the nozzle 3 and mix with the pigment after the air compressor / air pump is connected to the air inlet 6 and the gas enters the gas channel 12. This eliminates the need to open additional grooves inside the nozzle assembly 9. Compared to opening space inside the nozzle assembly 9, it is more convenient and easier to process the ventilation grooves 3112 directly on the outer periphery of the nozzle 3.

[0031] The handle 1 is provided with a mounting ring 11 circumferentially located on the positioning section 32. The mounting ring 11 is provided with a positioning hole 111 for the positioning section 32 to be inserted. The positioning section 32 is provided with a limiting ring 321 circumferentially located. The diameter of the limiting ring 321 is larger than the diameter of the positioning hole 111. Since the diameter of the limiting ring 321 is larger than the diameter of the positioning hole 111, after the connected nozzle assembly 9 and nozzle 3 are installed into the handle 1, the presence of the limiting ring 321 and the mounting ring 11 can facilitate the determination of the position of the nozzle 3 relative to the handle 1, prevent the nozzle 3 from being over-inserted into the handle 1, reduce the axial movement of the nozzle 3, and improve the stability of the nozzle 3 in the handle 1.

[0032] The nozzle assembly 9 includes a fixing section 91 for inserting the handle 1 and a mating section 92 located on the front side of the handle 1. The rear end face of the mating section 92 abuts against the handle 1. The fixing section 91 is provided with a first threaded section 911 in the circumferential direction. The first threaded section 911 is threadedly engaged with the handle 1. When the first threaded section 911 is threadedly engaged with the handle 1 and rotated into place, the nozzle assembly 9 can be fixed on the handle 1. At the same time, the position of the nozzle 3 inside the airbrush is indirectly determined. When the nozzle 3 needs to be removed for maintenance and cleaning, the nozzle assembly 9 can be removed from the airbrush and the nozzle 3 can be removed by rotating the fixing section 91 in the opposite direction.

[0033] In addition, it is worth noting that the internal space of nozzle 3 has a tapered profile that narrows forward, which reduces the flow rate of liquid as it passes through, thereby improving the stability of nozzle 3 in use.

[0034] The mating section 92 is provided with an installation groove 921 for the nozzle 3 to be installed. The front side of the ventilation part 311 abuts against the mating section 92. Since the front side of the nozzle 3 will abut against the mating section 92 after being installed in the installation groove 921, the stability of the nozzle 3 in the airbrush is further improved. With both front and rear restricted, it cannot move axially and can stably spray out the pigment.

[0035] The fixed section 91 is a flared frustum from front to back and has a contact ring 912 circumferentially arranged. The contact ring 912 is provided with contact texture 9121. The fixed section 91 with the flared frustum can abut against the handle 1, which facilitates the determination of the relative position of the two. The design of the contact texture 9121 can effectively improve the friction of the contact ring 912, thereby reducing the slippage of the hand or operating tool when rotating the fixed section 91 to achieve threaded engagement or disengagement with the handle 1.

[0036] In addition, the nozzle assembly 9 also includes a mounting base 93 located on the front side of the mating section 92. The mating section 92 is provided with a second threaded section 922. The mounting base 93 is threadedly engaged with the second threaded section 922. The nozzle 3 and the nozzle assembly 9 of the airbrush are key components for achieving fine atomization. They are small in diameter and have a precise structure. When idle or carried, they are easily deformed due to collisions or drops, and may also be contaminated by dust, pigment residue, etc. Therefore, when the airbrush is not in use, the mounting base 93 can be installed on the front side of the airbrush by rotating it, thus avoiding direct pressure on the nozzle 3 and clogging of the nozzle 3. It can also change and reduce the evaporation rate of pigment remaining in the airbrush.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An airbrush with a quick-connect nozzle, comprising a handle, a needle valve assembly disposed within the handle, a nozzle located in front of the needle valve assembly, a control lever linked to the needle valve assembly, a swashplate located on the needle valve assembly and linked to the control lever, an air inlet located at the bottom of the handle, an elastic element disposed within the handle for resetting the needle valve assembly, and a material cup located above the handle, wherein the handle contains a gas channel communicating with the air inlet and a pigment channel communicating with the material cup, characterized in that: The nozzle is provided with a nozzle assembly, the needle valve assembly comprises a top needle extending axially along left and right directions, the front side of the nozzle is abutted against the nozzle assembly and the rear side of the nozzle is abutted against the handle body, the nozzle assembly is detachably connected to the front side of the handle body, and the nozzle assembly, the nozzle and the top needle are concentrically arranged.

2. A marker pen with a quick-fit nozzle according to claim 1, characterized in that: The nozzle comprises a working section and a positioning section, the positioning section is located at the rear side of the working section, the working section is circumferentially provided with a ventilation part, the ventilation part comprises a plurality of protrusions and ventilation grooves located between adjacent protrusions.

3. A marker pen with a quick-fit nozzle according to claim 2, characterized in that: The handle body is circumferentially provided with a mounting ring at the positioning section, the mounting ring is provided with a positioning hole for inserting the positioning section, and the positioning section is circumferentially provided with a limiting ring, the diameter of the limiting ring is greater than the diameter of the positioning hole.

4. A marker pen with a quick-fit nozzle according to claim 2, characterized in that: The nozzle assembly comprises a fixed section inserted into the handle body and a matching section located at the front side of the handle body, the rear end surface of the matching section is abutted against the handle body, the fixed section is circumferentially provided with a first threaded section, and the first threaded section is threadedly matched with the handle body.

5. A pen as claimed in claim 4, wherein: The matching section is provided with a mounting groove for accommodating the nozzle, and the front side of the ventilation part is abutted against the matching section.

6. A pen as claimed in claim 5, wherein: The fixed section is provided with a circular truncated cone expanding from front to rear, and a contact ring is circumferentially arranged on the fixed section, the contact ring is provided with a contact trace.

7. A pen as claimed in claim 5, wherein: The nozzle assembly further comprises a mounting seat located at the front side of the matching section, the matching section is provided with a second threaded section, and the mounting seat is threadedly matched with the second threaded section.

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