CN213644585U

CN213644585U - Spray gun and spray gun system

Info

Publication number: CN213644585U
Application number: CN202021772190.6U
Authority: CN
Inventors: 黄蔚灵; 张伟; 李辉; 庞晓丽
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2019-12-13
Filing date: 2020-08-21
Publication date: 2021-07-09
Anticipated expiration: 2030-08-21
Also published as: CN113853277A; CN216265834U

Abstract

The utility model discloses a spray gun and spray gun system, it relates to electric tool technical field, the spray gun includes: the spray pen is provided with a nozzle; the body is detachably connected with the spray pen; the machine body is provided with a first interface which is used for being connected with an external direct-current power supply through a cable; the air pump is accommodated in the machine body and used for providing compressed air for the spray pen; the motor is in transmission connection with the air pump and used for driving the air pump to work, and the motor is electrically connected with the first interface. This application can make the spray gun that operating personnel gripped lighter and more exquisite to effectively increase the time of endurance of spray gun system.

Description

Spray gun and spray gun system

Technical Field

The utility model relates to an electric tool technical field, in particular to spray gun and spray gun system.

Background

A spray gun is a device that uses a quick release of liquid or compressed air as a motive force. The spray gun can be directly used for loading paint in the industry, namely the simple spray gun can be installed in automatic equipment, such as an automatic glue sprayer, an automatic glue spreader, an automatic paint sprayer, a coating machine and other spraying equipment.

The spray gun is divided into a normal pressure type spray gun and a pressurized spray gun. In the pressurized spray gun, the spray gun generally comprises a spray pen and a machine body, wherein the spray pen is in threaded connection with the machine body, and a diaphragm air pump, a motor, a control unit and a rechargeable battery cell are arranged in the machine body. The rechargeable battery cell is used for supplying power to the motor, so that the motor drives the diaphragm air pump to generate compressed air, and when the compressed air is sprayed out through the air cap at the front part of the spray pen, a low-pressure area lower than the atmospheric pressure is generated at the front part of the paint nozzle connected with the spray pen. The pressure difference generated in front of the paint nozzle sucks the paint from the paint storage tank and atomizes the paint into particles to be sprayed on the surface of the coated object under the action of the high-speed jet force of the compressed air. Although the rechargeable battery cell is arranged in the machine body of the current spray gun, the work is more convenient to move, the weight of the part of the spray gun gripped by an operator is larger, the operation is inconvenient, the hand fatigue is easily caused under the long-term work, in addition, the capacity of the rechargeable battery cell is limited in consideration of the weight problem of the part of the spray gun gripped, and therefore the endurance time of the whole machine is shorter.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a technical problem that will solve provides a spray gun and spray gun system, and it can make the spray gun that operating personnel gripped more small and exquisite light to effectively increase the time of endurance of spray gun system.

The embodiment of the utility model provides a concrete technical scheme is:

a spray gun, the spray gun comprising:

the spray pen is provided with a nozzle;

the body is detachably connected with the spray pen; the machine body is provided with a first interface which is used for being connected with an external direct-current power supply through a cable;

the air pump is accommodated in the machine body and used for providing compressed air for the spray pen;

the motor is in transmission connection with the air pump and used for driving the air pump to work, and the motor is electrically connected with the first interface.

Preferably, the spray gun further comprises a conversion interface; the conversion interface connects the spray pen with the machine body and enables the position of the spray pen relative to the machine body to be adjustable; the spray gun further comprises an upper cover arranged on the machine body, and the conversion interface can be inserted into the upper cover and is communicated with an outlet of the air pump.

Preferably, when the spray pen is installed to the body through the conversion interface, the nozzle and the first interface are respectively located at two sides of the body.

Preferably, the conversion interface has a groove on a sidewall thereof, and the spray gun further comprises: the limiting piece is movably arranged in the upper cover; an elastic member providing a force urging the retaining member toward the recess.

Preferably, the conversion interface has a cylindrical periphery wall, the upper cover have with periphery wall complex cylinder hole, the conversion interface drives the spray pen for the fuselage rotates.

A spray gun system, comprising: a spray gun as claimed in any one of the preceding claims; the adapter is provided with a mounting part for connecting an external direct-current power supply; the spray gun is connected with the adapter through a cable and receives the power transmitted by the adapter.

Preferably, the adapter is provided with a switch for controlling the turning on and off of the motor.

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

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

Preferably, the external direct current power supply 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 scheme of the utility model following beneficial effect that is showing has:

the spray gun is connected with the adapter through a cable, and the adapter is provided with an installation part; therefore, the battery pack is arranged outside, and the volume and the mass of the spray gun are greatly reduced; further, the spray gun of this application has reduced the weight of spray gun itself more through setting up partial the control unit in the adapter, has made things convenient for the user to grip, even the spray gun that operating personnel gripped works for a long time also is difficult for causing hand fatigue. Secondly, the mounting part can be compatible with different types of battery packs, and the universality is stronger; meanwhile, the capacity of the battery pack can be selected as required, the condition that an operator grips the spray gun is not influenced, and therefore the capacity of the battery pack can be greatly increased, the endurance time of the whole spray gun system is longer, the problem that the spray gun needs to be charged in the one-time use process is avoided, and the operation efficiency is effectively improved.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.

Drawings

The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for helping the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. The skilled person in the art can, under the teaching of the present invention, choose various possible shapes and proportional dimensions to implement the invention according to the specific situation.

FIG. 1 is a schematic structural view of a spray gun system according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a spray gun according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of the first embodiment of the present invention illustrating the installation between the nozzle and the main body;

FIG. 4 is a schematic structural view of the second embodiment of the present invention illustrating the installation between the nozzle and the main body;

FIG. 5 is a schematic structural view of the third embodiment of the present invention illustrating the installation between the nozzle and the main body;

fig. 6 is a schematic structural view of the fourth embodiment of the present invention, illustrating the installation between the ink jet pen and the main body.

Reference numerals of the above figures:

1. a spray gun; 10. a nozzle; 11. spraying pens; 12. a body; 13. an air pump; 14. a motor; 15. a first interface; 16. converting an interface; 161. a recessed portion; 17. an upper cover; 171. a channel; 172. a blocking member; 18. a limiting member; 19. an elastic member; 20. a seal ring; 21. a groove; 22. opening a hole; 23. a blocking member; 24. a positioning member; 25. a sheath; 251. a boss portion; 3. an adapter; 31. a battery pack; 32. a housing; 321. a third interface; 33. a cable; 331. a second interface; 34. a manual speed regulation module; 35. and a USB output interface.

Detailed Description

The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of explanation only, and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to make the spray gun smaller and more exquisite and light and effectively increase the time of endurance of spray gun system, this application has proposed a spray gun and spray gun system.

Fig. 1 is a schematic structural diagram of a spray gun system in an embodiment of the present invention, fig. 2 is a schematic structural diagram of a spray gun in an embodiment of the present invention, as shown in fig. 1 and fig. 2, the spray gun 1 may include: the spray pen 11 is provided with a nozzle 10; a body 12 detachably connected to the spray pen 11; the body 12 is provided with a first interface 15, and the first interface 15 is used for connecting with an external direct current power supply through a cable 33; an air pump 13 accommodated in the body 12 for supplying compressed air to the airbrush 11; and the motor 14 is in transmission connection with the air pump 13 and is used for driving the air pump 13 to work, and the motor 14 is electrically connected with the first interface 15.

The spray gun system may comprise the above-described spray gun 1 and an adapter 3, the adapter 3 comprising: an installation part for connecting an external direct current power supply; the spray gun 1 is connected to the adapter 3 by a cable 33 and receives power transmitted from the adapter 3.

The spray gun 1 is connected with the adapter 3 through the cable 33, and the adapter 3 is provided with a mounting part; therefore, the battery pack 31 is arranged outside, and the volume and the mass of the spray gun 1 are greatly reduced; further, spray gun 1 of this application has reduced the weight of spray gun 1 itself more through setting up partial control unit in adapter 3, has made things convenient for the user to grip, even the spray gun 1 that operating personnel gripped also is difficult for causing the hand fatigue for a long time work. Secondly, the mounting part can be compatible with different types of battery packs 31, so that the universality is stronger; meanwhile, the capacity of the battery pack 31 can be selected as required, the operation of holding the spray gun 1 by an operator is not affected, and therefore the capacity of the battery pack 31 can be greatly increased, the endurance time of the whole spray gun system is longer, the problem that charging is needed in the one-time use process is avoided, and the operation efficiency is effectively improved.

To provide a better understanding of the lance system of the present application, it will be further explained and illustrated below.

As shown in fig. 1, the spray gun system may include: spray gun 1 and adapter 3. As shown in fig. 2, the spray gun 1 may include a body 12 and a spray pen 11 mounted on the body 12. The spray pen 11 is used for atomizing liquid such as paint in a storage tank into particles under the action of high-speed jet force of compressed air and spraying the particles. The body 12 has an accommodating chamber, and an air pump 13 for providing compressed air to the spray pen 11 and a motor 14 in transmission connection with the air pump 13 are accommodated in the accommodating chamber, and the motor 14 is used for driving the air pump 13 to work.

As shown in fig. 2, the body 12 is substantially cylindrical, and the air pump 13 and the motor 14 are sequentially disposed in the body 12 from top to bottom. The central portion of the body 12 is configured as a grip portion having a radial dimension of between 45-50 mm. The shaft of the motor 14 is arranged in a vertical direction, which makes the entire spray gun 1 more compact. The air output end of the air pump 13 is connected with the spray pen 11, and one end of the spray pen 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 fig. 2, the spray pen 11 is installed at the upper end of the body 12 with the nozzle 10 facing to the right; the first port 15 is located on a side wall of the body 12 and is disposed to the left, preferably at a lower end of the side wall, so that the first port 15 can be easily connected to the cable 33 without affecting the paint spray from the nozzle 10. The first interface 15 is used to receive the current or signal delivered by the adapter 3 and to deliver the current to the motor 14.

In a possible embodiment, the first interface 15 is preferably an aviation plug, so that the reliability and safety of the connection of the first interface 15 and the cable 33 can be effectively ensured.

In this embodiment, the air pump 13 can preferably adopt a diaphragm air pump 13, the diaphragm air pump 13 is small in size and easy to move, a fixing mechanism is not required for fixing, the occupied space or the occupied space is extremely small, and the installation is simple, convenient and economical.

As shown in fig. 1 and 2, the spray pen 11 may be screwed on the upper end of the body 12 by a screw connection, and when the spray pen 11 is screwed on the body 12 by a screw connection, ideally, the first interface 15 is opposite to the nozzle 10, one facing to the left end and the other facing to the right end, so that the operator does not interfere with the operation by holding the body 12. However, the tightening and loosening degrees of different users are not uniform, and the relative position of the nozzle 10 and the first interface 15 cannot be precisely controlled.

Also, with the above-described structure, the operation of mounting the pen 11 to the body 12 is complicated, and after the pen 11 is attached to the body 12, the angle of the pen 11 cannot be freely rotated in order to secure the tightness with which the outlets of the pen 11 and the air pump 13 are screwed. That is, when the pen 11 is attached to the body 12, the position of the pen 11 with respect to the body 12 is fixed and cannot be adjusted.

Therefore, in order to realize that the spray pen is quickly installed on the machine body or is detached from the machine body, and the position of the spray pen relative to the machine body is adjustable, the spray gun of the utility model also comprises an upper cover 17 arranged on the machine body 12; a conversion interface 16. The conversion interface 16 can be inserted into the upper cover 17 to be positioned and is butted with an outlet of the air pump 13, and the spray pen 11 is mounted to the machine body 12 through the conversion interface 16 and is communicated with an air outlet of the air pump 13; the position of the pen 11 relative to the body 12 can also be adjusted according to the user's needs.

Preferably, the user can adjust the relative positions of the pen 11 and the body 12 so that the nozzle 10 and the first port 15 are located on both sides of the body 12.

Fig. 3 is the embodiment of the present invention provides a structural schematic diagram of installation between the lower nozzle pen of the first embodiment and the fuselage, fig. 4 is the embodiment of the present invention provides a structural schematic diagram of installation between the lower nozzle pen of the second embodiment and the fuselage, fig. 5 is the embodiment of the present invention provides a structural schematic diagram of installation between the lower nozzle pen of the third embodiment and the fuselage, fig. 6 is the embodiment of the present invention provides a structural schematic diagram of installation between the lower nozzle pen of the fourth embodiment and the fuselage.

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

In the above embodiment, the pen 11 may be fixed to the conversion interface 16 by a screw connection, and then inserted into the upper cover 17 from different angles through the conversion interface 16, thereby achieving adjustment of the direction in which the pen 11 sprays. Of course, the user may also rotate the pen 11 to effect positional adjustment of the pen 11 relative to the body 12.

As shown in fig. 3 and 6, the conversion interface 16 has a groove on a sidewall thereof. The spray gun may include: a stopper provided movably in the upper cover 17; the elastic piece provides force for promoting the limiting piece to move towards the groove, so that the limiting piece can be clamped into the groove.

Specifically, as shown in fig. 3, the conversion interface 16 has a groove 21 on a sidewall thereof. The spray gun 1 may comprise: a limiting member 18 capable of moving in the upper cover 17, wherein the limiting member 18 is provided with a clamping part capable of extending into the groove 21; and an elastic member 19 disposed between the upper cover 17 and the stopper 18, the elastic member 19 providing a force for urging the click portion to extend into the groove 21.

In the present embodiment, the limiting member 18 extends in the horizontal direction and has an opening 22, and the switching port 16 is inserted into the opening 22 of the limiting member 18 and makes the air outlet of the air pump 13 communicate with the air pen 11. Under the action of the elastic element 19, the locking portion of the limiting element 18 is locked into the groove 21 of the converting interface 16, so that the converting interface 16 is limited so that it cannot be separated from the upper cover 17 upward.

When the conversion interface 16 and the spray pen 11 need to be detached, an operator can press the limiting member 18, so that the elastic member 19 contracts, the clamping portion of the limiting member 18 is separated from the groove 21 of the conversion interface 16, and the conversion interface 16 can be pulled out upwards.

In the above embodiment, 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 peripheral wall, and the upper cover has a cylindrical hole matching with the peripheral wall, so that the conversion interface 16 can directly rotate in the upper cover 17 after the conversion interface 16 is mounted on the upper cover 17.

Of course, the outer ring of the conversion interface 16 may have a regular polygon cross section, 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 switching interface 16 relative to the upper cover 17 in the circumferential direction is adjustable, and the rotation axis is parallel to the vertical direction, so that the user can conveniently adjust the relative position of the spray pen 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 formed in the side wall of the conversion interface 16, so as to ensure that the clamping portions of the limiting members 18 can be clamped into the groove 21 of the conversion interface 16 when the conversion interface 16 and the upper cover 17 are at different relative positions.

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 therein, the channel 171 is provided with an elastic member 19 and a limiting member 18, and the limiting member 18 is clamped into the groove 21 under the action of the elastic member 19.

The spray gun 1 further comprises a blocking member 172 arranged at the end of the passage 171 for abutting against the resilient member 19. The stopper 18 may be a spherical ball or a partial spherical shape toward one end of the recess 161. When the converting interface 16 is inserted into the upper cover 17 according to a predetermined angle, the limiting member 18 first moves back into the channel 171 under the action of the converting interface 16; when the interface 16 to be switched moves down to the final position, the stopper 18 is locked into the groove 21 by the elastic member 19. Thus, the conversion interface 16 cannot be easily separated upward from the upper cover 17, and the connection with the outlet of the air pump 13 is maintained. At this time, the user can adjust the position of the pen 11 with respect to the body 12 by rotating the conversion interface 16. When the conversion interface 16 and the spray pen 11 need to be pulled out, the conversion interface 16 and the spray pen 11 are pulled out upwards with force, and due to the shape of the limiting member 18, the conversion interface 16 can push the limiting member 18 to move towards the side away from the groove 21, so that the limiting member 18 is separated from the groove 21 of the conversion interface 16, and the conversion interface 16 can be pulled out upwards smoothly.

As a matter of course, the shape of the conversion interface 16 matches the opening of the upper cover 17 for receiving the conversion interface 16, i.e. the conversion interface has a cylindrical peripheral wall, and the upper cover has a cylindrical hole matching with the peripheral wall, and the conversion interface 16 can directly rotate in the upper cover 17. Of course, the outer ring of the conversion interface 16 may have a regular polygon cross section, and the conversion interface 16 may be inserted into the upper cover 17 at different angles in the circumferential direction. The recess 21 is designed to be circular, so that the switching connection 16 and the spray pen 11 can be freely rotated, thereby making it possible to adjust the spray pen 11 by 360 degrees. Of course, the number of the grooves 21 may be plural, and the grooves are distributed in different directions on the side wall of the conversion interface 16, so that the direction of the spraying direction of the spray pen 11 can be adjusted by plugging and unplugging the conversion interface 16 and the spray pen 11.

In a second possible 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 tightly attached to the conversion interface 16 and the inner side wall of the upper cover 17, so that the conversion interface 16 and the upper cover 17 cannot easily move up and down by means of the friction force of the sealing ring 20, and meanwhile, the conversion interface 16 and the spray pen 11 can rotate around the axis at will, so that 360-degree adjustability of the spray pen 11 is achieved.

In a third possible 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 opening 22 is located opposite to the recess 161. A stopper 23 is provided on an outer sidewall of the upper cover 17, and the stopper 23 may be fixed on the outer sidewall of the upper cover 17. The spray gun 1 further comprises: the positioning piece 24, the positioning piece 24 is clamped into the accommodating space formed by the concave part 161 and the opening 22; a sheath 25 disposed around the upper cover 17, wherein the sheath 25 has a protrusion 251 on the inner side wall, and the protrusion 251 abuts against the positioning member 24 to partially insert the positioning member 24 into the recess 161, so as to maintain the spray pen 11 at the predetermined position; and an elastic member 19 disposed between the blocking member 23 and the convex portion 251. The elastic member 19 extends in the vertical direction, the upper end of the elastic member 19 abuts against the stopper 23, and the lower end of the elastic member 19 abuts against the projection 251, so that the sheath 25 has a tendency to move downward.

In the present embodiment, the positioning member 24 is configured as a spherical ball.

When the conversion interface 16 is inserted into the upper cover 17, the protrusion 251 of the sheath 25 is positioned opposite to the opening 22 under the action of the elastic member 19, so as to abut against the positioning member 24, so that the positioning member 24 partially enters the recess 161 of the conversion interface 16, and thus, the conversion interface 16 cannot be separated from the upper cover 17 upward, and the connection with the outlet of the air pump 13 is maintained. When the conversion interface 16 and the spray pen 11 need to be pulled out, the sheath 25 is pushed upwards to compress the elastic element 19, and the convex part 251 of the sheath 25 moves upwards to be disengaged from the positioning element 24; when the converting interface 16 is pulled out upward, the converting interface 16 pushes the positioning element 24 to move toward the sheath 25, so that the positioning element 24 is separated from the recess 161 of the converting interface 16, and the converting interface 16 can be pulled out upward smoothly.

The shape of the conversion interface 16 matches with the opening of the upper cover 17 for accommodating the conversion interface 16, that is, the conversion interface has a cylindrical peripheral wall, the upper cover has a cylindrical hole matched with the peripheral wall, when the recess 161 is annular, the conversion interface 16 and the spray pen 11 can rotate freely, thereby realizing 360-degree adjustability of the spray pen 11. Of course, the number of the concave portions 161 may be multiple, and the concave portions are distributed in different directions on the side wall of the conversion interface 16, so that the direction of the spraying direction of the spray pen 11 can be adjusted by plugging and unplugging the conversion interface 16 and the spray pen 11. 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 recess 161 may be annular or multiple and distributed in different directions on the side wall of the conversion interface 16.

As shown in fig. 1, the adapter 3 may include: the casing 32, casing 32 has the installation department on, and the installation department is used for connecting the external DC power supply. The spray gun 1 is connected to said adapter 3 by a cable 33 and receives the electric power transmitted from said adapter 3. For example, the housing 32 may have a third port 321 connected to one end of the cable 33, so that the other end of the cable 33 is connected to the first port 15 of the spray gun 1 to transmit the power of the external dc power source to the motor 14.

The adapter 3 can adjust the voltage and current output by the external dc power source and supply power to the motor 14 through the cable 33. Of course, the adapter 3 may also directly power the motor 14 when connected to an external ac power source, thereby enabling the spray gun system to be used directly when connected to an external ac power source.

The adapter can be adapted to a variety of different capacities of rechargeable battery cells, which can greatly extend the duration of the spray gun system. The cable 33 can be connected to match the first interface 15. The external dc power supply may be a battery pack 31 detachably mounted to a mounting portion of the housing 32, so that the adapter 3 is compatible with different types of battery packs 31, has a higher versatility, and can replace the battery pack 31 at any time.

When the spray gun 1 is used, the adapter 3 is electrically connected with the spray gun 1 through the cable 33, so that power can be supplied to the motor 14, and the motor 14 is controlled to work. At this point, the operator simply holds the spray gun 1 itself to operate the spray gun 1, and the adapter 3 can be placed aside without the operator bearing its weight. From the above, it can be seen that the spray gun 1 in the present application does not need to be directly connected with a direct current power supply; i.e. the battery pack 31 is provided separately from the spray gun 1. Therefore, on one hand, the volume and the weight of the spray gun 1 can be reduced; on the other hand, when performing a specific operation using the spray gun 1, the user can operate the spray gun 1 by simply connecting the spray gun 1 to the adapter 3 via the cable 33, attaching the battery pack 31 to the adapter 3, and then placing the adapter 3 aside. Moreover, the cable 33 can be bent, so that the distance between the spray gun 1 and the adapter 3 can be changed during operation, the spray gun 1 can be moved more conveniently, and the human-computer experience is better.

The battery pack 31 is preferentially a general battery pack for the electric tool, so that the general battery pack for the conventional electric tool can be mounted in the adapter 3 to supply power, and the situation that the spray gun system is used for a long time and the electric quantity of one battery pack 31 cannot meet the requirement at certain times is avoided. At this time, the universal battery pack 31 for the electric tool in other electric tools can be directly replaced into the adapter for continuous use, and 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 a direct-current spray gun adopted in the prior art, the whole mass of the spray gun system is lighter, the voltage which can be reached by the battery pack is higher, therefore, the ratio of the voltage of the universal battery pack to the weight of the spray gun can reach not less than 0.05V/g, and the performance of the whole spray gun system is better. For example, in this implementation, the overall weight of the spray gun system may be 279.6g, or even lighter, and the voltage of the battery pack may be 20V, or even higher.

Because the battery pack 31 is not arranged on the spray gun 1, the capacity of the battery pack 31 can be selected according to requirements, namely the capacity of the battery pack 31 can be greatly increased, so that the endurance time of the whole spray gun system is longer, the problem that charging is needed in the one-time use process is avoided, and the operation efficiency is effectively improved. Of course, the capacity of the battery pack 31 cannot be too large, and it is sufficient to substantially satisfy the ordinary use time. For example, when the power of the motor 14 of the spray gun 1 is about 20W, the battery pack 31 with the capacity of 1.5AH can be used for about 90 minutes by the spray gun 1, the battery pack 31 with the capacity of 2AH can be used for about 120 minutes by the spray gun 1, the battery pack 31 with the capacity of 4AH can be used for about 240 minutes by the spray gun 1, and the use time of the spray gun 1 with the battery pack 31 arranged in the spray gun 1 in the prior art is only about 30-40 minutes.

The rechargeable battery unit outputs direct current, and in order to be portable and convenient to use of the spray gun system, the rechargeable battery unit is directly adopted to supply power in the using process of the spray gun system, so that the direct current motor 14 can be correspondingly selected as the motor 14 in the spray gun 1.

The cable 33 may be connected to an adapter so as to transmit the adapter-regulated current output by the battery pack 31 to the motor 14 through the first interface 15. The end of the cable 33 has a second interface 331, the second interface 331 being capable of interfacing with the first interface 15. When the first interface 15 is an aviation plug, the second interface 331 is also an aviation plug.

In a possible embodiment, the adapter 3 may comprise a control unit, which is arranged on the adapter, for controlling the operating parameters of the motor 14, the operating parameters comprising at least the current, the voltage or a combination thereof of the motor 14. The control unit varies the operating speed of the electric motor 14 of the spray gun 1 by controlling the operating parameters of the electric motor 14. The operating parameter includes, but is not limited to, a voltage of the motor 14, a current of the motor 14, or a combination of a voltage and a current of the motor 14. This application is not intended to be limiting in any way.

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

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

In the present embodiment, the adapter 3 is further provided with an operation unit.

The operating unit includes a manual governor module 34 for regulating the speed of the motor 14, as shown in fig. 1. The manual speed adjustment module 34 is operable by a user to adjust the speed of the motor 14.

The operation unit further includes a switch provided on the housing 32. The switch is used to control the delivery of power from the battery pack 31 to the spray gun 1 and thus the motor 14 on and off. When using the spray gun 1, the user simply activates a switch on the housing 32 and 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, which simplifies the structure of the spray gun 1 but causes inconvenience to some extent. For example, in the specific operation, the operator holds only the gun 1 itself, the adapter 3 being set aside by the cable 33; when it is necessary to change the operating state of the motor 14, the user must go to the place where the adapter 3 is placed to operate the adapter 3 in order to control the motor 14.

For this purpose, in a possible embodiment, a switch may also 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 control the on and off of the motor 14. The switch may be a membrane switch. Of course, the switch is not limited to a membrane switch, and may be other switches, such as a light-sensitive switch, which is not specified in this application.

In one possible embodiment, switches may be provided on the housing 32 and the body 12, respectively. To prevent inadvertent operation, the power transfer from the battery pack 31 to the spray gun 1 occurs only after the switch on the housing 32 is first operated and the switch on the body 12 is then operated. At this time, the motor 14 is stopped by operating any one of the switches.

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

In the present embodiment, as shown in fig. 1, a plurality of USB output interfaces 35 are further provided on the side of the adapter 3. The USB output interface 35 outputs a target voltage for charging an external power device such as a cellular phone. For this purpose, the control unit further comprises a voltage conversion module for converting the supply voltage of the battery pack 31 into a target voltage. The magnitude of the target voltage is set according to the requirements of the external device.

In one possible embodiment, the USB output interface 35 may output power with a target voltage value of 5V and a current of 1A.

In the present embodiment, as shown in fig. 1, the mounting portion is provided on the housing 32. Specifically, a mounting portion is provided on the lower side of the case 32, and the mounting portion is slidably coupled to the battery pack 31. When the battery pack 31 is connected to the mounting portion and the adapter 3 is connected to the spray gun 1 by the cable 33, the battery pack 31 forms a loop with the adapter 3 and the motor 14; so that the battery pack 31 can supply power to the motor 14. The adapter 3 thus allows the battery pack 31 to be located separately from the spray gun 1. That is, the adapter 3 positions the battery pack 31 externally with respect to the spray gun 1. Furthermore, compared with the spray gun 1 in the prior art, the spray gun 1 of the embodiment has the advantages of smaller volume, lighter operation and better man-machine experience.

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

All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.

The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A spray gun, characterized in that it comprises:

the spray pen is provided with a nozzle;

2. The spray gun of claim 1 further comprising a transition interface; the conversion interface connects the spray pen with the machine body and enables the position of the spray pen relative to the machine body to be adjustable; the spray gun further comprises an upper cover arranged on the machine body, and the conversion interface can be inserted into the upper cover and is communicated with an outlet of the air pump.

3. The spray gun of claim 2 wherein said nozzle and said first port are located on opposite sides of said body when said spray pen is connected to said body through said transition port.

4. The spray gun of claim 2 wherein said transition interface has a groove in a sidewall thereof, said spray gun further comprising: the limiting piece is movably arranged in the upper cover; an elastic member providing a force urging the retaining member toward the recess.

5. The spray gun of claim 2 wherein said transition interface has a cylindrical peripheral wall and said upper cover has a cylindrical opening for engaging said peripheral wall, said transition interface providing for rotation of said pen relative to said body.

6. A spray gun system, comprising: the spray gun and adapter of any one of claims 1 to 5; the adapter is provided with a mounting part for connecting an external direct-current power supply; the spray gun is connected with the adapter through a cable and receives the power transmitted by the adapter.

7. The spray gun system of claim 6 wherein said adapter is provided with a switch for controlling the turning on and off of said motor.

8. The spray gun system of claim 6 wherein said external DC power source is a power tool universal battery pack rated at 20V.

9. The spray gun system of claim 6 wherein said external DC power source is a power tool universal battery pack having a capacity of 1.5AH for operation of said spray gun for at least 1 hour.

10. The spray gun system of claim 6 wherein said external DC power source is a power tool universal battery pack, the ratio of the voltage of said universal battery pack to the weight of said spray gun being no less than 0.05V/g.