WO2021115391A1

WO2021115391A1 - Spray gun and spray gun system

Info

Publication number: WO2021115391A1
Application number: PCT/CN2020/135354
Authority: WO
Inventors: 黄蔚灵; 张伟; 李辉; 庞晓丽
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2019-12-13
Filing date: 2020-12-10
Publication date: 2021-06-17

Abstract

A spray gun and a spray gun system, which relate to the technical field of electric tools, the spray gun comprising: an airbrush (11), a nozzle (10) being provided on the airbrush (11); a machine body (12), which is detachably connected to the airbrush (11), a first interface (15) being provided on the machine body (12), and the first interface (15) being used for connecting to an external direct current power supply by means of a cable (33); an air pump (13), which is housed within the machine body (12) and used for providing a compressed gas to the airbrush (11); and a motor (14), which is transmissionally connected to the air pump (13) and used for driving the air pump (13) to work, the motor (14) being electrically connected to the first interface (15). The spray gun is small and light, and the battery life of a spray gun system is effectively increased.

Description

Spray gun and spray gun system

This application requires that the application date is December 13, 2019, the application number is 201922242198.5, the application date is January 22, 2020, the application number is 202020145329.8, the application date is August 21, 2020, and the application number is 202021772190.6 China The priority of the patent application, the entire content of which is incorporated in this application by reference.

Technical field

The invention relates to the technical field of electric tools, in particular to a spray gun and a spray gun system.

Background technique

Spray gun is a kind of equipment that uses liquid or compressed air to quickly release as power. The application of spray gun in the industry can be directly loaded with paint, that is, a simple spray gun can be installed in automatic equipment, such as automatic glue spraying machine, automatic glue spreading machine, automatic paint spraying machine, coating machine and other spraying equipment.

There are two types of spray guns: normal pressure type and pressurized type. In a pressurized spray gun, the spray gun can generally be composed of an airbrush and a body. The airbrush is threaded to the body, and the body has a built-in diaphragm air pump, motor, control unit and rechargeable batteries. The rechargeable battery cell is used to supply power to the motor, so that the motor drives the diaphragm air pump to generate compressed air. When it is ejected from the air cap on the front of the airbrush, a ratio is generated in the front of the paint nozzle connected to it. Low pressure area with low atmospheric pressure. The pressure difference generated in the front of the paint nozzle sucks the paint out of the paint storage tank, and under the action of the high-speed spray force of compressed air, it atomizes into particles and sprays on the surface of the object to be coated. Although the current spray gun has a rechargeable battery in the body, it is more convenient to work and move. However, the part of the spray gun held by the operator is heavy and inconvenient to handle. It is easy to cause hand fatigue under long-term work. Because of the weight problem of this part of the spray gun held, the capacity of the rechargeable battery is limited, so the battery life of the whole machine is short.

Summary of the invention

In order to overcome the above-mentioned drawbacks of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a spray gun and a spray gun system, which can make the spray gun held by the operator smaller and lighter, and effectively increase the battery life of the spray gun system.

The specific technical solution of the embodiment of the present invention is:

A spray gun, the spray gun comprising:

An airbrush, which is provided with a nozzle;

A body, detachably connected to the airbrush; the body has a first interface, and the first interface is used to connect to an external DC power supply through a cable;

An air pump, housed in the body, used to provide compressed gas to the airbrush;

A motor is drivingly connected to the air pump for driving the air pump to work, and the motor is electrically connected to the first interface.

Preferably, the spray gun further includes a conversion interface; the conversion interface connects the airbrush with the body, and makes the position of the airbrush relative to the body adjustable; the spray gun further includes a setting In the upper cover of the fuselage, the conversion interface can be inserted into the upper cover and communicated with the outlet of the air pump.

Preferably, when the airbrush is installed to the fuselage through the conversion interface, the nozzle and the first interface are respectively located on both sides of the fuselage.

Preferably, a groove is provided on the side wall of the conversion interface, and the spray gun further includes: a limiting member movably arranged in the upper cover; an elastic member, the elastic member provides for urging the limiting member to face the The force of the groove movement.

Preferably, the conversion interface has a cylindrical outer peripheral wall, the upper cover has a cylindrical hole matched with the outer peripheral wall, and the conversion interface drives the airbrush to rotate relative to the body.

A spray gun system, the spray gun system includes: the spray gun as described in any one of the above; an adapter, the adapter is provided with a mounting part for connecting an external DC power supply; the spray gun is connected to the adapter through a cable, and receives Power transmitted from the adapter.

Preferably, the adapter is provided with a switch, and the switch is used to control the on and off of the motor.

Preferably, the battery pack is a universal battery pack for electric tools, and the rated voltage of the universal battery pack is 20V.

Preferably, the external DC power supply is a universal battery pack for electric tools, the capacity of the universal battery pack is 1.5 AH, and the spray gun can work for at least 1 hour.

Preferably, the external DC power source is a universal battery pack for electric tools, and the ratio of the voltage of the universal battery pack to the weight of the spray gun is not less than 0.05.

The technical solution of the present invention has the following significant beneficial effects:

The spray gun in the present application is connected to the adapter through a cable, and the adapter is provided with a mounting part; in this way, the battery pack is externally mounted, which greatly reduces the volume and quality of the spray gun; further, the spray gun in the present application is provided with part of the control unit in the adapter , The weight of the spray gun itself is further reduced, and it is convenient for the user to hold. The spray gun held by the operator is not easy to cause hand fatigue even after long-term work. Secondly, the installation part can be compatible with different types of battery packs, which is more versatile; at the same time, the capacity of the battery pack can be selected according to needs, and it will not affect the operator to hold the spray gun, so the capacity of the battery pack can be greatly increased, making the entire spray gun The system has a longer battery life, avoiding the problem of charging during a single use, thereby effectively improving work efficiency.

With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereby. Within the spirit and scope of the terms of the appended claims, the embodiments of the present invention include many changes, modifications and equivalents. Features described and/or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or substituted for features in other embodiments .

Description of the drawings

The drawings described herein are for explanatory purposes only, and are not intended to limit the scope of the present disclosure in any way. In addition, the shape and proportional size of each component in the figure are only illustrative, which are used to help the understanding of the present invention, and do not specifically limit the shape and proportional size of each component of the present invention. Under the teaching of the present invention, those skilled in the art can choose various possible shapes and proportional sizes according to specific conditions to implement the present invention.

Figure 1 is a schematic structural diagram of a spray gun system in an embodiment of the present invention;

Figure 2 is a schematic structural diagram of a spray gun in an embodiment of the present invention;

3 is a schematic diagram of the structure of the installation between the airbrush and the fuselage in the first implementation of the embodiment of the present invention;

4 is a schematic diagram of the structure of the installation between the airbrush and the fuselage in the second implementation mode of the embodiment of the present invention;

5 is a schematic diagram of the structure of the installation between the airbrush and the fuselage in a third implementation manner in an embodiment of the present invention;

FIG. 6 is a schematic diagram of the structure of the installation between the airbrush and the fuselage in the fourth implementation manner in the embodiment of the present invention.

Reference signs of the above drawings:

1. Spray gun; 10. Nozzle; 11. Airbrush; 12. Body; 13. Air pump; 14. Motor; 15. First interface; 16. Conversion interface; 161. Recess; 17. Upper cover; 171. Channel 172. Blocking element; 18. Limiting element; 19. Elastic element; 20. Seal ring; 21. Groove; 22. Opening; 23. Blocking element; 24. Positioning element; 25. Sheath; 251. Protrusion; 3. Adapter; 31, battery pack; 32, housing; 321, third interface; 33, cable; 331, second interface; 34, manual speed control module; 35, USB output interface.

Detailed ways

The details of the present invention can be understood more clearly in combination with the drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention, and cannot be construed as limiting the present invention in any way. Under the teaching of the present invention, the skilled person can conceive any possible modifications based on the present invention, and these should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or a central element may also exist. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be a connection between two components, which can be directly connected or indirectly connected through an intermediary. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms can be understood according to specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only, and do not mean the only implementation.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of this application. The terminology used in the specification of the application herein is only for the purpose of describing specific embodiments, and is not intended to limit the application. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

In order to make the spray gun more compact and lighter and effectively increase the battery life of the spray gun system, this application proposes a spray gun and a spray gun system.

Fig. 1 is a schematic structural diagram of a spray gun system in an embodiment of the present invention, and Fig. 2 is a schematic structural diagram of a spray gun in an embodiment of the present invention. As shown in Figs. 1 and 2, the spray gun 1 may include: an airbrush 11, the airbrush 11 A nozzle 10 is provided on the body; the body 12 is detachably connected to the airbrush 11; the body 12 is provided with a first interface 15 for connecting to an external DC power supply through a cable 33 An air pump 13, housed in the body 12, used to provide compressed gas to the airbrush 11; a motor 14, connected to the air pump 13 in transmission, for driving the air pump 13 to work, the motor 14 and The first interface 15 is electrically connected.

The spray gun system may include the above spray gun 1 and an adapter 3, and the adapter 3 includes: a mounting part for connecting an external DC power supply; the spray gun 1 is connected to the adapter 3 through a cable 33, and receives power transmitted from the adapter 3.

The spray gun 1 in this application is connected to the adapter 3 through a cable 33, and the adapter 3 is provided with a mounting part; in this way, the battery pack 31 is placed outside, which greatly reduces the volume and quality of the spray gun 1; Part of the control unit is arranged in the adapter 3, which further reduces the weight of the spray gun 1 itself, and facilitates the user's holding. The spray gun 1 held by the operator is not easy to cause hand fatigue even after long-term work. Secondly, the mounting part is compatible with different types of battery packs 31, which is more versatile; at the same time, the capacity of the battery pack 31 can be selected according to needs, which will not affect the operator's holding of the spray gun 1, so it can greatly increase the capacity of the battery pack 31 , So that the battery life of the entire spray gun system is longer, avoiding the problem of charging during one use, thereby effectively improving the work efficiency.

In order to better understand the spray gun system in this application, it will be further explained and described below.

As shown in Figure 1, the spray gun system can include two parts: a spray gun 1 and an adapter 3. Wherein, as shown in FIG. 2, the spray gun 1 may include a body 12 and an airbrush 11 installed on the body 12. The airbrush 11 is used to atomize the paint and other liquids in the storage tank into particles under the action of the high-speed spray force of the compressed air and spray them out. The body 12 has an accommodating chamber. The accommodating chamber is provided with an air pump 13 for supplying compressed gas to the airbrush 11 and a motor 14 drivingly connected to the air pump 13. The motor 14 is used to drive the air pump 13 to work.

As shown in FIG. 2, the fuselage 12 is generally cylindrical, and the air pump 13 and the motor 14 are arranged in the fuselage 12 sequentially from top to bottom. The middle position of the fuselage 12 is configured as a grip, and the radial dimension of the grip is between 45-50 mm. The shaft of the motor 14 is arranged in the vertical direction, so that the entire spray gun 1 can be made more compact. The gas output end of the air pump 13 is connected to the airbrush 11, and one end of the airbrush 11 is provided with a nozzle 10. The body 12 is provided with a first interface 15 electrically connected to the motor 14. As shown in Figure 2, the airbrush 11 is installed on the upper end of the body 12, and the nozzle 10 is set to the right; the first interface 15 is located on the side wall of the body 12 and is set to the left, preferably the lower end of the side wall, which can facilitate the The connection between an interface 15 and the cable 33 will not affect the spraying of paint from the nozzle 10. The first interface 15 is used to receive the current or signal delivered by the adapter 3 and deliver the current to the motor 14.

In a feasible implementation, the first interface 15 is preferably an aviation plug, which can effectively ensure the reliability and safety of the connection between the first interface 15 and the cable 33.

In this embodiment, the air pump 13 may preferably be a diaphragm air pump 13. The diaphragm air pump 13 is small in size and easy to move, and can be fixed without a fixing mechanism. It occupies a very small floor or space, and is easy and economical to install.

As shown in Figures 1 and 2, the airbrush 11 can be screwed on the upper end of the fuselage 12 through a threaded connection. After the airbrush 11 is screwed on the fuselage 12 through a threaded connection, ideally, the first interface 15 and the nozzle 10 are arranged opposite to each other, one facing the left end and the other facing the right end, so that the operator will not interfere when holding the fuselage 12 for work. However, the degree of tightening and loosening of different users is not uniform, and the relative position of the nozzle 10 and the first interface 15 cannot be accurately controlled.

Moreover, under the above structure, the operation of installing the airbrush 11 to the body 12 is complicated. After the airbrush 11 is connected to the body 12, in order to ensure the tightness of the airbrush 11 and the outlet of the air pump 13, the airbrush 11 The angle cannot be rotated at will. That is, after the airbrush 11 is attached to the main body 12, the position of the airbrush 11 relative to the main body 12 is fixed and cannot be adjusted.

To this end, in order to achieve quick installation of the airbrush to the body, or detachment from the body, and an adjustable position of the airbrush relative to the body, the spray gun of the present invention also includes an upper cover provided on the body 12 17; Conversion interface 16. The conversion interface 16 can be inserted into the upper cover 17 to be positioned and connected to the outlet of the air pump 13, and the airbrush 11 is installed to the body 12 through the conversion interface 16, and is connected to the air pump The air outlet of 13 is connected; the position of the airbrush 11 relative to the body 12 can also be adjusted according to user requirements.

Preferably, the user can adjust the relative position of the airbrush 11 and the body 12 so that the nozzle 10 and the first interface 15 are located on both sides of the body 12 respectively.

FIG. 3 is a schematic diagram of the structure of the installation between the airbrush and the body in the first embodiment of the embodiment of the present invention, and FIG. 4 is the structure of the installation between the airbrush and the body in the second embodiment of the embodiment of the present invention Schematic diagram, FIG. 5 is a schematic diagram of the installation between the airbrush and the body in the third embodiment of the embodiment of the present invention, and FIG. 6 is the installation between the airbrush and the body in the fourth embodiment of the embodiment of the present invention Schematic diagram of the structure.

As shown in FIGS. 3 to 6, the spray gun 1 may include: an upper cover 17 arranged on the body 12; and a conversion interface 16 connected with the spray pen 11. The conversion interface 16 can be inserted into the upper cover 17 and positioned opposite to the outlet of the air pump 13. After the airbrush 11 is connected to the conversion interface 16, the airbrush 11 and the conversion interface 16 can still rotate, so that the airbrush 11 is relatively The position of the body 12 can be adjusted.

In the above-mentioned embodiment, the airbrush 11 can be fixed on the conversion interface 16 through a threaded connection, and then inserted into the upper cover 17 through the conversion interface 16 from different angles, so as to realize the adjustment of the spraying direction of the airbrush 11. Of course, the user can also rotate the airbrush 11 to adjust the position of the airbrush 11 relative to the body 12.

As shown in FIG. 3 and FIG. 6, the side wall of the conversion interface 16 has a groove. The spray gun may include: a movable limit member provided in the upper cover 17; an elastic member, the elastic member provides a force for urging the limit member to move toward the groove, so that the limit The piece can be snapped into the groove.

Specifically, as shown in FIG. 3, the side wall of the conversion interface 16 has a groove 21. The spray gun 1 may include: a limiting member 18 that can move in the upper cover 17, and the limiting member 18 has a clamping part that can extend into the groove 21; an elastic member 19 is arranged between the upper cover 17 and the limiting member 18, and the elastic member 19 is arranged between the upper cover 17 and the limiting member 18. The piece 19 provides a force for urging the engaging portion to extend into the groove 21.

In this embodiment, the limiting member 18 extends in a horizontal direction and has an opening 22. The conversion interface 16 is inserted into the opening 22 of the limiting member 18, and the airbrush 11 is connected with the air outlet of the air pump 13. Under the action of the elastic member 19, the locking portion of the limiting member 18 is locked into the groove 21 of the conversion interface 16, so as to limit the position of the conversion interface 16 so that it cannot be detached from the upper cover 17 upward.

When the conversion interface 16 and the airbrush 11 need to be disassembled, the operator can press the limiting member 18, so that the elastic member 19 shrinks, and the locking part of the limiting member 18 detaches from the groove 21 of the conversion interface 16, and the conversion interface 16 can be used. Pull upwards.

In the above embodiment, the shape of the conversion interface 16 matches the opening on the upper cover 17 that accommodates the conversion interface 16, that is, the conversion interface has a cylindrical outer peripheral wall, and the upper cover has a cylindrical hole that matches the outer peripheral wall. After the conversion interface 16 is installed on the upper cover 17, the conversion interface 16 can be directly rotated in the upper cover 17.

Of course, the cross section of the outer ring of the conversion interface 16 may be a regular polygon, and the conversion interface 16 may be inserted into the upper cover 17 at different angles in the circumferential direction. In this way, the position of the conversion interface 16 relative to the upper cover 17 in the circumferential direction can be adjusted, and the rotation axis is parallel to the vertical direction, which can facilitate the user to adjust the relative position of the airbrush 11 and the body 12. Of course, in the above embodiment, the groove 21 may be annular, or a plurality of circumferentially distributed grooves 21 may be provided on the side wall of the conversion interface 16, so as to ensure that the conversion interface 16 and the upper cover 17 are in different relative positions. Bottom, the locking parts of the limiting member 18 can all be locked into the groove 21 of the conversion interface 16.

Specifically, as shown in FIG. 6, in another specific embodiment, the side wall of the conversion interface 16 has a groove 21, the upper cover 17 has a channel 171, and the channel 171 is provided with an elastic member 19 and a limiter. The positioning member 18 is locked into the groove 21 under the action of the elastic member 19.

The spray gun 1 further includes a blocking member 172 provided at the end of the channel 171 for resisting the elastic member 19. The limiting member 18 may be a round ball or a partial spherical shape at one end facing the recessed portion 161. When the conversion interface 16 is inserted into the upper cover 17 at a preset angle, the limiting member 18 first retreats into the channel 171 under the action of the conversion interface 16; after the conversion interface 16 is moved down to the final position, the limiting member 18 is in the elastic member Under the action of 19, it is locked into the groove 21. In this way, the conversion interface 16 cannot be easily detached from the upper cover 17 upward, and maintains the docking with the outlet of the air pump 13. At this time, the user can adjust the position of the airbrush 11 relative to the body 12 by rotating the conversion interface 16. When it is necessary to pull out the conversion interface 16 and the airbrush 11, pull the conversion interface 16 and the airbrush 11 upwards forcefully. Due to the shape of the limit member 18, the conversion interface 16 can push the limit member 18 away from the groove 21. Moving sideways, the limiting member 18 will escape from the groove 21 of the conversion interface 16, and the conversion interface 16 can be pulled out smoothly.

As feasible, and similarly, the shape of the conversion interface 16 matches the opening of the upper cover 17 that accommodates the conversion interface 16, that is, the conversion interface has a cylindrical outer peripheral wall, and the upper cover has a cylindrical hole matching the outer peripheral wall, The conversion interface 16 can be directly rotated in the upper cover 17. Of course, the cross section of the outer ring of the conversion interface 16 may be a regular polygon, and the conversion interface 16 may be inserted into the upper cover 17 at different angles in the circumferential direction. The groove 21 is configured to be circular, so that the conversion interface 16 and the airbrush 11 can rotate freely, so that the airbrush 11 can be adjusted in 360 degrees. Of course, the number of grooves 21 may be multiple, which are distributed in different positions of the side wall of the conversion interface 16. In this way, the spraying direction of the airbrush 11 can also be adjusted by plugging and unplugging the conversion interface 16 and the airbrush 11.

In a second feasible embodiment, as shown in FIG. 4, the outer side wall of the conversion interface 16 or the inner side wall of the upper cover 17 has an annular groove 21, and a sealing ring 20 is embedded in the groove 21. When the conversion interface 16 is inserted into the upper cover 17, the sealing ring 20 is in close contact with the inner wall of the conversion interface 16 and the upper cover 17, so relying on the friction of the sealing ring 20 makes the conversion interface 16 and the upper cover 17 unable to move up and down easily. The conversion interface 16 and the airbrush 11 can be arbitrarily rotated around the axis, so that the airbrush 11 can be adjusted in 360 degrees.

In a third feasible embodiment, as shown in FIG. 5, the outer side wall of the conversion interface 16 has a recess 161, and the side wall of the upper cover 17 has an opening 22, and the position of the opening 22 is opposite to the recess 161. . A blocking member 23 is provided on the outer side wall of the upper cover 17, and the blocking member 23 can be fixed on the outer side wall of the upper cover 17. The spray gun 1 further includes: a positioning member 24, which is clamped into the receiving space formed by the recessed portion 161 and the opening 22; a sheath 25 sheathed on the periphery of the upper cover 17, and the inner side wall of the sheath 25 has a protrusion 251 , The protrusion 251 abuts the positioning member 24 so that the positioning member 24 is partially locked into the recess 161, so that the airbrush 11 is maintained at the preset position; an elastic member disposed between the blocking member 23 and the protrusion 251 19. The elastic member 19 extends in the vertical direction, the upper end of the elastic member 19 abuts the blocking member 23, and the lower end of the elastic member 19 abuts the protrusion 251, so that the sheath 25 has a tendency to move downward.

In this embodiment, the positioning member 24 is configured as a round ball.

When the conversion interface 16 is inserted into the upper cover 17, the protrusion 251 of the sheath 25 is opposed to the opening 22 under the action of the elastic member 19, thereby resisting the positioning member 24, so that the positioning member 24 partially enters the conversion interface 16 In the recessed portion 161, in this way, the conversion interface 16 cannot be detached from the upper cover 17 upward, and maintains the docking with the outlet of the air pump 13. When the conversion interface 16 and the airbrush 11 need to be pulled out, the sheath 25 is pushed upwards to compress the elastic member 19, and the raised portion 251 of the sheath 25 moves upward to release the contact with the positioning member 24; pull the conversion interface upwards 16. The conversion interface 16 pushes the positioning member 24 to move to the side of the sheath 25, so that the positioning member 24 is separated from the recess 161 of the conversion interface 16, and the conversion interface 16 can be pulled out smoothly.

The shape of the conversion interface 16 matches the opening of the upper cover 17 for accommodating the conversion interface 16, that is, the conversion interface has a cylindrical outer peripheral wall, and the upper cover has a cylindrical hole that matches with the outer peripheral wall. At this time, the conversion interface 16 and the airbrush 11 can rotate freely, so that the airbrush 11 can be adjusted in 360 degrees. Of course, the number of recesses 161 may be multiple, which are distributed in different orientations of the side wall of the conversion interface 16. In this way, the spraying direction of the airbrush 11 can also be adjusted by plugging and unplugging the conversion interface 16 and the airbrush 11. The cross section of the outer ring of the conversion interface 16 can also be a regular polygon, and the conversion interface 16 can be inserted into the upper cover 17 at different angles in the circumferential direction. In this manner, the recessed portion 161 can be annular or multiple, distributed in Change the different orientations of the side walls of the interface 16.

As shown in FIG. 1, the adapter 3 may include: a housing 32 having a mounting part on the housing 32, and the mounting part is used to connect an external DC power supply. The spray gun 1 is connected to the adapter 3 through a cable 33 and receives power transmitted from the adapter 3. For example, the housing 32 may have a third interface 321, which is connected to one end of the cable 33, so that the other end of the cable 33 is connected to the first interface 15 of the spray gun 1. Transmitted to the motor 14.

The adapter 3 can adjust the voltage and current output by the external DC power supply and then supply power to the motor 14 through the cable 33. Of course, the adapter 3 can also directly supply power to the motor 14 when connected to an external AC power source, so that the spray gun system can be used directly when connected to an external AC power source.

The adapter can be adapted to various rechargeable battery units of different capacities, which can greatly extend the battery life of the spray gun system. The cable 33 can be matched and connected with the first interface 15. The external DC power supply may be a battery pack 31 that can be detachably installed on the mounting part of the housing 32. In this way, the adapter 3 is compatible with different types of battery packs 31, which is more versatile, and the battery pack 31 can be replaced at any time.

When the spray gun 1 is used, it is only necessary to electrically connect the adapter 3 and the spray gun 1 through the cable 33 to provide power to the motor 14 and control the operation of the motor 14. At this time, the operator only needs to hold the spray gun 1 itself to operate the spray gun 1, and the adapter 3 can be placed aside, and the operator does not have to bear its weight. It can be seen from the above that the spray gun 1 in this application does not need to be directly connected to the DC power supply; that is, the battery pack 31 and the spray gun 1 are arranged separately. In this way, on the one hand, the size and weight of the spray gun 1 can be reduced; on the other hand, when the spray gun 1 is used for specific operations, only the spray gun 1 needs to be connected to the adapter 3 through the cable 33, and the battery pack 31 is installed on the adapter 3. Then put the adapter 3 aside, and the user can hold the spray gun 1 itself to operate. In addition, since the cable 33 can be bent, the distance between the spray gun 1 and the adapter 3 can be changed during operation, so that it is more convenient to move the spray gun 1 and the human-machine experience is better.

The battery pack 31 is prioritized as a general-purpose battery pack for electric tools. In this way, the general-purpose battery pack for conventional electric tools can be installed in the adapter 3 for power supply, avoiding the situation where the spray gun system is used for a long time and the power of one battery pack 31 cannot meet the requirements. At this time, the power tool universal battery pack 31 in other power tools can be directly replaced into the adapter for continued use. The rated voltage of the universal battery pack is generally 20V. When the capacity of the universal battery pack is 1.5AH, the spray gun can work for at least 1 hour. Compared with the DC spray gun used in the prior art, the overall weight of the spray gun system in this application is lighter, and the battery pack can reach a higher voltage. Therefore, the voltage of the universal battery pack is equal to the weight of the spray gun. The ratio can reach not less than 0.05, and the performance of the entire spray gun system is better. For example, in this implementation, the weight of the spray gun system can be 279.6g, or even lighter, and the voltage of the battery pack can be 20V or even higher.

Since the battery pack 31 is not set on the spray gun 1, the capacity of the battery pack 31 can be selected according to demand, that is to say, the capacity of the battery pack 31 can be greatly increased, so that the entire spray gun system has a longer battery life and avoids a single use process In order to effectively improve the work efficiency. Of course, the capacity of the battery pack 31 cannot be too large, and it can basically meet the normal use time. For example, when the power of the motor 14 of the spray gun 1 is about 20W, the battery pack 31 with a capacity of 1.5AH can be used for the spray gun 1 for about 90 minutes, and the battery pack 31 with a capacity of 2AH can be used for the spray gun 1 for about 120 minutes, with a capacity of The 4AH battery pack 31 can be used for the spray gun 1 for about 240 minutes, while the use time of the spray gun 1 with the battery pack 31 installed in the spray gun 1 in the prior art is only about 30-40 minutes.

The rechargeable battery units all output DC power. For the portable and convenient use of the spray gun system, the rechargeable battery unit is directly used for power supply during the use of the spray gun system. Therefore, the motor 14 in the spray gun 1 can be a DC motor 14 correspondingly .

The cable 33 may be connected with the adapter, so that the current output by the battery pack 31 after being adjusted by the adapter is transmitted to the motor 14 through the first interface 15. The end of the cable 33 has a second interface 331, and the second interface 331 can be connected to the first interface 15. When the first interface 15 uses an aviation plug, the second interface 331 also uses an aviation plug.

In a feasible embodiment, the adapter 3 may include a control unit, which is arranged on the adapter and used to control the working parameters of the motor 14, and the working parameters include at least the current, voltage or a combination of the motor 14. The control unit changes the operating speed of the motor 14 by controlling the operating parameters of the motor 14 of the spray gun 1. The operating parameters include, but are not limited to, the voltage of the motor 14, the current of the motor 14, or the combination of the voltage and current of the motor 14. This application does not make any limitations.

The control unit may be a circuit module including a single-chip microcomputer.

In the above structure, by arranging the control unit in the adaptor 3 instead of the spray gun 1, the size and weight of the spray gun 1 can be further reduced, which is more conducive for the operator to hold and use the spray gun 1 for a long time.

In this embodiment, the adapter 3 is also provided with an operating unit.

The operating unit includes a manual speed control module 34, which is used to adjust the speed of the motor 14, as shown in FIG. 1. The manual speed control module 34 is manipulated by the user and used to adjust the rotation speed of the motor 14.

The operation unit also includes a switch provided on the housing 32. The switch is used to control the power transmission from the battery pack 31 to the spray gun 1 so as to control the opening and closing of the motor 14. When using the spray gun 1, the user only needs to trigger the switch on the housing 32, and the power flows from the battery pack 31 to the motor 14 through the adapter 3. The switch for controlling the start and stop of the motor 14 is arranged on the adapter 3, although the structure of the spray gun 1 is simplified, it also brings inconvenience to operation to a certain extent. For example, when performing specific operations, the operator only holds the spray gun 1 itself, and the adapter 3 is placed aside through the cable 33; when the working state of the motor 14 needs to be changed, the user must go to the place where the adapter 3 is placed and check the adapter 3 Only by operating can the motor 14 be controlled.

For this reason, in a possible implementation manner, a switch may be provided only on the body 12 of the spray gun 1. The switch is used to control the turning on and off of the motor 14. When the operator holds the body 12, the switch can be used to control the on and off of the motor 14. The switch can be a membrane switch. Of course, the switch is not limited to a membrane switch, and can also be other switches, such as a light sensor switch, which is not specified in this application.

In a possible implementation, switches may also be provided on the housing 32 and the body 12 respectively. In order to prevent misoperation, the power transmission from the battery pack 31 to the spray gun 1 only occurs when the switch on the casing 32 is operated first, and after the switch on the main body 12 is operated. At this time, stopping the motor 14 only needs to operate any one of the aforementioned switches.

In a possible implementation manner, a switch for controlling the on and off of the motor is provided on the adapter, but the electronic circuit for controlling the operation of the motor is provided inside the spray gun.

In this embodiment, as shown in FIG. 1, a plurality of USB output ports 35 are also provided on the side of the adapter 3. The USB output interface 35 outputs a target voltage, which is used to charge an external power device, such as a mobile phone. To this end, the control unit further includes a voltage conversion module for converting the supply voltage of the battery pack 31 into a target voltage. The size of the target voltage is set according to the requirements of the external device.

In a possible implementation manner, the USB output interface 35 can output power with a target voltage value of 5V and a current of 1A.

In this embodiment, as shown in FIG. 1, the mounting portion is provided on the housing 32. Specifically, the mounting portion is provided on the lower side of the housing 32, and the mounting portion is slidingly fitted to the battery pack 31. When the battery pack 31 is connected to the mounting part and the adapter 3 is connected to the spray gun 1 through the cable 33, the battery pack 31 forms a loop with the adapter 3 and the motor 14; thus, the battery pack 31 can provide power for the motor 14. In this way, the adapter 3 makes the battery pack 31 and the spray gun 1 separate. That is, the adapter 3 makes the battery pack 31 external to the spray gun 1. Furthermore, compared with the spray gun 1 in the prior art, the spray gun 1 of this embodiment has a smaller volume, a lighter operation, and a better man-machine experience.

The control unit is used to control the running state of the motor 14, and the control unit may be a PCB panel.

All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of" describing a combination shall include the determined element, component, component or step and other elements, components, components or steps that do not substantially affect the basic novel characteristics of the combination. The use of the term "comprising" or "including" to describe a combination of elements, components, components or steps herein also contemplates an embodiment basically consisting of these elements, components, components or steps. The term "may" is used here to illustrate that any of the described attributes included in "may" are optional. Multiple elements, components, components or steps can be provided by a single integrated element, component, component or step. Alternatively, a single integrated element, ingredient, component or step may be divided into separate multiple elements, ingredients, components or steps. The disclosure of "a" or "an" used to describe an element, ingredient, component or step does not mean to exclude other elements, ingredients, components or steps.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. The above-mentioned embodiments are only to illustrate the technical concept and characteristics of the present invention, and their purpose is to enable those familiar with the technology to understand the content of the present invention and implement them accordingly, and should not limit the protection scope of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

A spray gun, characterized in that the spray gun comprises:

An airbrush, which is provided with a nozzle;

A fuselage, the fuselage has a first interface, and the first interface is used to connect to an external DC power supply through a cable;

A conversion interface, which detachably connects the airbrush with the body and makes the position of the airbrush relative to the body adjustable;

An air pump, housed in the body, used to provide compressed gas to the airbrush;

A motor is drivingly connected to the air pump for driving the air pump to work, and the motor is electrically connected to the first interface.
The spray gun according to claim 1, wherein the spray gun further comprises an upper cover provided on the body, and the conversion interface can be inserted into the upper cover and communicated with the outlet of the air pump.
The spray gun according to claim 2, wherein when the spray pen is connected to the body through the conversion interface, the nozzle and the first interface are respectively located on both sides of the body.
The spray gun according to claim 2, wherein a groove is provided on the side wall of the conversion interface, and the spray gun further comprises: a limiting member movably arranged in the upper cover; an elastic member, the elastic The member provides a force for urging the limiting member to move toward the groove.
The spray gun according to claim 2, wherein the conversion interface has a cylindrical outer peripheral wall, the upper cover has a cylindrical hole matched with the outer peripheral wall, and the conversion interface drives the airbrush relative to The body rotates.
A spray gun system, characterized in that the spray gun system comprises: the spray gun according to any one of claims 1 to 5 and an adapter; the adapter is provided with a mounting part for connecting an external DC power supply; the spray gun passes The cable is connected to the adapter and receives power transmitted from the adapter.
The spray gun system according to claim 6, wherein the adapter is provided with a switch, and the switch is used to control the on and off of the motor.
The spray gun system of claim 6, wherein the external DC power source is a universal battery pack for electric tools, and the rated voltage of the universal battery pack is 20V.
The spray gun system according to claim 6, wherein the external DC power supply is a universal battery pack for electric tools, and the universal battery pack has a capacity of 1.5 AH, which can be used for the spray gun to work for at least 1 hour.
The spray gun system of claim 6, wherein the external DC power source is a universal battery pack for electric tools, and the ratio of the voltage of the universal battery pack to the weight of the spray gun is not less than 0.05V/g.