CN216716574U - Hot air gun and hot air gun system - Google Patents

Abstract

The application discloses heat gun and heat gun system, wherein, a heat gun includes: a cylindrical housing, a heating assembly, a motor, and a fan located in the cylindrical housing; the cylindrical shell is provided with a holding part; one end of the cylindrical shell is provided with an air outlet; the motor drives the fan to rotate to generate airflow, and the airflow is heated by the heating assembly and finally output through the air outlet; the cylindrical shell is provided with a first interface which is electrically connected with the motor and the heating assembly; the first interface is used for detachably connecting a cable and connecting an external direct current power supply through the cable. The heat gun and the heat gun system are convenient for users to use and are not easily limited by use scenes.

Description

Hot air gun and hot air gun system

Technical Field

The application relates to the field of electrical tools, in particular to a heat gun and a heat gun system.

Background

The hot air gun heats air through a heating device inside the hot air gun, and hot air is formed and output under the action of the fan. Current heat guns can be divided into direct current heat guns and alternating current heat guns according to the type of power supply.

Wherein, direct current hot-blast rifle carries out DC power supply through external battery package on the fuselage, and the complete machine quality is heavy when using, reaches more than 1 kg sometimes, leads to the user to hold and experience not good, and working strength is big.

The alternating current hot air gun needs to be provided with a power line, and therefore the alternating current hot air gun cannot be used in occasions without alternating current power supply, and further the use scene is very limited.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings, it is an object of the present application to provide a heat gun and a heat gun system, which are convenient for users to use and are not easily limited by the use scenario.

In order to achieve the purpose, the technical scheme is as follows:

a heat gun, comprising: a cylindrical housing, a heating assembly, a DC motor, and a fan located in the cylindrical housing; one end of the cylindrical shell is provided with an air outlet; the motor drives the fan to rotate to generate airflow, and the airflow is heated by the heating assembly and finally output through the air outlet; the cylindrical shell is provided with a first interface which is electrically connected with the motor and the heating assembly; the first interface is used for detachably connecting a cable and connecting an external direct current power supply through the cable.

As a preferred embodiment, the cylindrical housing has a leading end and a trailing end along its length; the air outlet is located at the front end of the cylindrical shell, and the first interface is located at the tail end.

In a preferred embodiment, the weight of the heat gun is less than 350 g.

In a preferred embodiment, the outer diameter of the cylindrical housing is not more than 50 mm.

In a preferred embodiment, the ratio of the voltage of the external dc power supply to the outer diameter of the cylindrical case is greater than 0.4V/mm.

In a preferred embodiment, the power of the heat gun is less than 300W.

A heat gun system comprising:

a heat gun according to any one of the above embodiments;

an adapter having a battery pack mounting portion; the battery pack mounting part is used for detachably mounting a battery pack; the adapter is electrically connected with a cable; the cable is detachably connected with the first interface of the hot air gun.

As a preferred embodiment, the adapter is further provided with a control unit for controlling operating parameters of the direct current motor.

In a preferred embodiment, the battery pack mounting portion is adapted to accommodate battery packs of at least two different battery capacities.

As a preferred embodiment, the adapter is further provided with a switch for controlling the on and off of the dc motor.

Has the advantages that:

the hot-blast rifle that an embodiment of this application provided utilizes the cable to supply power to the hot-blast rifle through setting up the adapter for hot-blast rifle self need not to set up DC power supply such as battery, and then can reduce hot-blast rifle's weight, and the user of being convenient for uses, and moreover, this hot-blast rifle's adapter mountable battery package does not adopt AC power supply, and then is difficult for receiving the use scene restriction.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope.

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.

It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive labor.

FIG. 1 is a schematic view of a heat gun system according to an embodiment of the present application;

FIG. 2 is a schematic view of the heat gun of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is a schematic diagram of the externally powered assembly of FIG. 1;

fig. 5 is a schematic view of fig. 1 in a disassembled state.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments in the present invention, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, an embodiment of the present application provides a heat gun 100, including: a cylindrical housing 101, a heating assembly 106, a motor 109, and a fan 110 located in the cylindrical housing 101; one end of the cylindrical shell 101 is provided with an air outlet 102; the dc motor 109 can drive the fan 110 to generate an airflow, which is heated by the heating element 106 and output through the air outlet 102; the cylindrical shell 101 is provided with a first interface 103 electrically connected with the motor 109 and the heating component 106; the first interface 103 is used for detachably connecting a cable 200 and connecting an external direct current power supply through the cable 200.

In the present embodiment, as shown in fig. 2 and 3, the housing 101 is a straight cylindrical housing extending in a single direction, and the length of the cylindrical housing 101 ranges from 150mm to 250 mm. The outer diameter of the cylindrical housing 101 is not more than 50 mm. The cylindrical housing 101 has a holding portion for a user to hold and operate. The housing 101 has a leading end 104 and a trailing end 105 along its length; the air outlet 102 is located at the front end 104 of the housing 101.

Further, the heating assembly 106 may include a resistance wire, and an air duct 107 is further disposed in the housing 101, specifically, the air duct 107 is a steel pipe. The resistance wire is wrapped in mica paper 108 and placed in air duct 107, air duct 107 being positioned within housing 101. The motor 109 is a direct current motor, the diameter of the motor is 20mm-30mm, and the length of the motor is 30mm-40 mm. The motor 109 is installed behind the air duct 107 (in this embodiment, the position close to the air outlet 102 is taken as the front position, and the position far away from the air outlet 102 is taken as the back position; for example, the motor 109 is installed behind the air duct 107, that is, the motor 109 is far away from the air outlet 102 relative to the air duct 107), the motor 109 is fixedly installed on a motor connecting disc 111 through a screw, a central hole of the fan 110 is sleeved on a motor shaft in an interference fit manner, and the motor 109 and the fan 110 are installed and positioned in the housing 101 by means of the motor connecting disc 111. The heat gun 100 does not require a battery to be mounted and is lightweight, in this embodiment. The weight of the heat gun 100 is less than 350 g, preferably the weight of the heat gun 100 is 200 g and 300 g, such as 260 g. The power of the hot air gun is below 300W. Preferably, the power of the heat gun 100 is 200W.

In order to facilitate connection with the cable 200, the housing 101 is provided with a first interface 103 electrically connected to the motor 109 and the heating element 106. The first interface 103 is located at the tail end 105. The first port 103 can be detachably connected (releasably connected) to one end of the cable 200, thereby further improving the convenience of the heat gun 100. By arranging the first interface 103, the power supply of the single adapter 301 is not fixed, and the use flexibility of the equipment is improved. Of course, in other embodiments, cable 200 may be directly connected to heat gun 100, such that heat gun 100 is non-removably connected.

Preferably, one end of the cable 200 is electrically connected to the first interface 103 through a plug structure, and in particular, one end of the cable 200 has a connection terminal. The first interface 103 may be a female terminal, and one end of the cable 200 has a male terminal to be mated with the first interface.

In a possible embodiment, the first interface 103 is an aviation socket; one end of the cable 200 is provided with an aviation plug matched with the aviation socket. When a user needs to use the heat gun 100, the cable 200 can be electrically connected to the heat gun 100 by directly inserting one end of the aviation plug of the cable 200 into the first interface 103 at the tail of the heat gun 100.

The hot-blast rifle 100 that this embodiment provided is through setting up the power supply of adapter 301 to hot-blast rifle 100 for hot-blast rifle 100 self need not to set up DC power supply such as battery, and then can reduce hot-blast rifle 100's weight, and the user of being convenient for uses, and moreover, this hot-blast rifle 100's adapter 301 mountable battery package 302 does not adopt alternating current power supply, and then is difficult for receiving the use scenario restriction. Moreover, the body of the heat gun 100 does not need to be provided with a battery, the size of the heat gun 100 can be reduced, and the tool can be miniaturized.

Based on the same concept, the embodiment of the utility model also provides a heat gun system, which is described in the following embodiment. Since the principle of solving the problems and the technical effects that can be achieved by the heat gun system are similar to those of the heat gun, but not limited to the effects provided by the heat gun and the problems that can be solved, the implementation of the heat gun system can be referred to the implementation of the heat gun, and repeated details are not repeated.

Referring to fig. 1 to 5, another embodiment of the present application further provides a heat gun system, including: the heat gun 100 has an adapter 301 having a battery pack mounting portion 306. The battery pack mounting portion 306 is used for detachably mounting the battery pack 302. The adaptor 301 is electrically connected with the cable 200; the cable 200 is detachably connected to the first port 103 of the heat gun 100. The adapter 301 and battery pack 302 can be formed as an external power supply assembly 300 for powering the heat gun 100. The heat gun 100 can be any one of the heat guns described in the above embodiments, and the description thereof is omitted here.

To facilitate the ease of lifting the device, the adapter 301 is further provided with a second interface 305. The first interface 103 and the second interface 305 are detachably connected by the cable 200. Therefore, the hot air gun system can be detachably separated into the independent hot air gun 100, the cable 200 and the adapter 301, so that the storage is convenient, the hot air gun 100 is not limited to be powered by a single adapter 301, correspondingly, the adapter 301 is not limited to be powered to the fixed hot air gun 100, and the use flexibility of the equipment and the adaptability of different scenes are further improved.

Specifically, one end of the cable 200 is electrically connected to the second interface 305 through a plug structure, wherein the plug structure form of the cable 200 and the second interface 305 may refer to the plug structure form of the cable 200 and the first interface 103, and the application is not limited thereto. Of course, in other embodiments, cable 200 may also be directly connected to adapter 301, connecting adapter 301 in a non-removable manner.

In this embodiment, the adapter is further provided with a control unit for controlling the operating parameters of the motor 109. Specifically, the control unit may include: a controller for controlling the movement of the motor 109, and an operating portion 309 for receiving a user-triggered action. The operation unit 309 is connected to the controller. The operation portion 309 may be in the form of a button, a knob, a touch screen, a rocker, a switch, etc., and the present application is not limited thereto. Specifically, the controller may be a control circuit board in the adapter 301. Placing the control unit in the adapter 301, rather than the heat gun 100, in this embodiment further reduces the weight and size of the heat gun 100.

Specifically, the control unit includes a manual speed adjustment module 309 for adjusting the rotational speed of the motor. The manual speed adjustment module 309 may be an operating knob connected to the controller. The operation knob can correspond to different rotating speed gears, and the user can adjust the rotating speeds of different motors by selecting a target gear.

To facilitate control of motor 109 and to transmit control signals, cable 200 is a multi-core cable. Specifically, the cable 200 has two wires for transmitting power and one signal core for transmitting a control signal. To facilitate the user's control of the energization of the target tool, the adapter is also provided with a switch 308 for controlling the motor on and off. The switch 308 may control the power supply between the battery pack 302 and the second interface, so as to control the on/off of the motor. In order to conveniently charge other convenient devices (such as a mobile phone and an earphone), the adapter 301 is further provided with a USB interface, so that one object has multiple purposes, and the use value of the adapter 301 is improved.

In this embodiment, as shown in fig. 4 and 5, the battery pack 302 is replaceably mounted on the adaptor 301 via the battery pack mounting portion 306, and the adaptor 301 can be provided with at least two battery packs with different battery capacities, thereby improving the cruising ability of the heat gun 100. The output voltage of the battery pack 302 is the same as the rated voltage of the heat gun 100. Specifically, the battery pack mounting portion may be a universal interface on the adapter 301, which is adapted to the battery (battery pack) of the electric power tool. By utilizing the universal interface, the adapter 301 can be used for installing battery packs with different voltages, so that the adapter can be adapted to different types of battery packs, and the universality of the equipment is improved.

Specifically, the battery pack mounting portion 306 may be an electrode holder (male connector) 306 on the adapter 301, and an electrode holder interface (female plug) 307 is provided on the electric tool battery (also referred to as a battery pack). In order to improve the adaptability of the adaptor 301, the electrode holder 306 and the electrode holder interface 307 may adopt a universal interface.

Please continue to refer to fig. 1 to 4. The present embodiment provides a control device 301 for cooperating with a power tool 100, the power tool 100 comprising a motor 109. The control device 301 includes: a first housing 310; a first control unit accommodated in the first housing 310 for controlling the operating parameters of the motor 109 of the electric tool 100; a battery pack mounting portion 306 provided on the first housing 310 for connecting the battery pack 302; the battery pack 302 is used for providing power for the motor 109; a second interface 305 electrically connected to the first control unit; when the second interface 305 is connected to the electric tool 100 through the cable 200, the first control unit is electrically connected to the motor 109, and the control device 301 can control the electric tool 100 to operate.

When the electric tool 100 is used, the control device 301 is electrically connected to the electric tool 100 through the cable 200, so that the electric power is supplied to the motor 109 and the motor 109 is controlled to operate. At this time, the user can operate the electric power tool 100 by holding the electric power tool 100 itself, and the control device 301 can be placed aside without the user bearing the weight thereof.

As can be seen from the above, the control device 301 according to the embodiment of the present application is provided with a first housing 310, a first control unit, a battery pack mounting portion 306, and a second interface 305; so that a first control unit for controlling the operating parameters of the motor 109 need not be provided in the power tool 100; and makes it unnecessary for the electric power tool 100 to be provided with a battery pack mounting portion for connecting the battery pack 302. I.e., the first control unit, the power source, and the power tool 100 are provided separately. Thus, on the one hand, the volume and weight of the power tool 100 can be reduced; on the other hand, when performing a specific operation using the electric power tool 100, the user can operate the electric power tool 100 by simply connecting the electric power tool 100 to the control device 301 via the cable 200 and then placing the control device 301 aside. Moreover, since the cable 200 can be bent, the distance between the electric power tool 100 and the control device 301 can be changed during operation, so that the electric power tool 100 can be moved more conveniently, and the human-machine experience is better.

In the present embodiment, the control device 301 can be connected to a plurality of types of electric tools through the cable 200 to control the operation thereof.

In the present embodiment, the first control unit changes the operating rotational speed of the motor 109 by controlling the operating parameters of the motor 109 of the electric power tool 100. The operating parameter includes, but is not limited to, a voltage of the motor 109, a current of the motor 109, or a combination of a voltage and a current of the motor 109. No provision is made for this application. The first control unit may be a circuit module including a single chip microcomputer.

In the present embodiment, the control device 301 further includes a manual speed adjusting knob 35 electrically connected to the first control unit. The manual speed knob 35 is operable by a user to adjust the speed of the motor 109.

As shown in fig. 4, the first housing 310 of the control device 301 is provided with a first switch 308. The first switch 308 is used to control the power transmission from the battery pack 302 to the power tool 100, thereby controlling the turning on and off of the motor 109. In use of the power tool 100, a user simply activates the first switch 308 on the first housing 310 and power flows from the battery pack 302 to the motor 109 via the control device 301.

The switch 308 for controlling the start and stop of the motor 109 is provided on the control device 301, which simplifies the structure of the electric power tool 100, but causes inconvenience to some extent. For example, when a specific operation is performed, the user holds only the electric power tool 100 itself, and the control device 301 is placed aside by the cable 200; when it is necessary to change the operating state of the motor 109, the user must go to the place where the control device 301 is placed to operate the control device 301, so as to control the motor 109.

For this purpose, in one possible embodiment, a second switch may also be provided only on the second housing 101 of the power tool 100. The second switch is used to control the turning on and off of the motor 109. When the user holds the second housing 101, the second switch controls the motor 109 to be turned on and off. The second switch may be a membrane switch. Of course, the second switch is not limited to be 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, the first switch and the second switch may be provided on the first housing 310 and the second housing 101, respectively. To prevent malfunction, the power transmission from the battery pack 302 to the power tool 100 only occurs after the first switch is operated and the second switch is operated. At this time, the motor 109 is stopped by operating any of the switches.

In this embodiment, the side of the control device 301 is further provided with 2 USB output interfaces. The USB output interface outputs a target voltage for charging an external power device, such as a mobile phone. To this end, the first control unit further includes a voltage conversion module for converting the supply voltage of the battery pack 302 into a target voltage.

The magnitude of the target voltage is set according to the requirements of the external device. In one possible implementation, the USB output interface may output power with a target voltage value of 5V and a current of 1A.

In the present embodiment, as shown in fig. 4 and 5, the battery pack mounting portion 306 is provided on the first case 310. Specifically, the battery pack mounting portion 306 is disposed at the lower side of the first housing 310, and the battery pack mounting portion 306 is slidably coupled to the battery pack 302. When the battery pack 302 is connected to the battery pack mounting portion 306 and the control device 301 is connected to the electric power tool 100 through the cable 200, the battery pack 302 forms a loop with the first control unit and the motor 109; so that the battery pack 302 can provide power to the motor 109. The control device 301 is such that the battery pack 302 is provided separately from the electric power tool 100. That is, the control device 301 makes the battery pack 302 external to the electric power tool 100. Compared with the electric tool in the prior art, the electric tool of the embodiment has the advantages of smaller volume, lighter operation and better man-machine experience.

The control device 301 according to the embodiment of the present application can be used in a variety of electric tools 100, so that the control device 301 according to the embodiment of the present application can be reused, thereby not only improving the adaptability of the control device 301 according to the embodiment of the present application, but also reducing the production cost of an electric tool system. Further, the electric power tool 100 according to the embodiment of the present invention employs the brushless motor 109, and therefore, the efficiency is higher.

In the present embodiment, as shown in fig. 3, the electric power tool 100 includes a second housing 101, a motor 109 provided in the second housing 101, and a first interface 103 provided on the second housing 101. Specifically, the second housing 101 is a hollow structure. The hollow portion forms a first receiving cavity. The motor 109 is accommodated in the first accommodating cavity. Further, the second casing 101 protects the motor 109, thereby improving safety. Further, the first interface 103 is electrically connected to the motor 109. Therefore, when the first interface 103 is electrically connected to the cable 200, the motor 109 can be electrically connected to the control unit through the cable 200. Further, the motor 109 is a brushless motor. Therefore, the power tool 100 according to the embodiment of the present application is more efficient.

In the present embodiment, as shown in fig. 1, the control device 301 includes a first housing 310, a control unit provided in the first housing 310, a battery pack mounting portion 306 provided in the first housing 310, and a second interface 305. Specifically, the first housing 310 has a hollow structure. The hollow portion forms a second receiving cavity. The control unit is accommodated in the second accommodating cavity. The control unit can be protected by the second case 101. On the other hand, when the control unit needs to be upgraded and maintained, the control unit can be maintained and upgraded by opening the first housing 310, thus facilitating the operation.

In this embodiment, the control unit is configured to control an operating parameter of the motor 109. The operating parameter may be the rotational speed of the motor 109. Of course, the operating parameter is not limited to the speed at which the motor 109 operates, but may be the voltage of the motor 109, the current of the motor 109, or a combination of the voltage and the current of the motor 109. The control device of the present embodiment changes the rotation speed of the motor 109 by changing the voltage or current supplied to the motor 109. No provision is made for this application. The control unit can be a circuit module consisting of a sensor, a singlechip and the like.

Specifically, the control unit includes a manual throttle module 309. The manual governor module 309 is used to regulate the speed of the motor 109.

Further, the control unit may further include a temperature detection module and an overload protection module. Specifically, the temperature detection module is used for detecting the working temperature of the control unit. The overload protection module is used to cut off the power supply or switch the operation mode of the motor 109 when the operation current of the control unit exceeds a preset value.

In the present embodiment, the second interface 305 is connected to the electric power tool 100 through the cable 200, so that the control unit is electrically connected to the motor 109. For example, as shown in fig. 1, the right end of the cable 200 is electrically connected to the second interface 305. The left end of the cable 200 is electrically connected to the first interface 103 of the power tool 100. So that the control unit can be electrically connected to the motor 109 via the cable 200. On the other hand, the control device 301 can be separated from the electric tool 100 by the cable 200, and thus, in this way, the second housing 101 can be held by hand to operate the electric tool 100 only by electrically connecting the second interface 305 of the control device 301 with the first interface 103 of the electric tool 100 through the cable 200. Because the cable 200 can be bent, the distance between the electric tool 100 and the control device 301 can be changed during operation, so that the electric tool 100 can be conveniently moved, and the human-computer experience is better. Specifically, the cable 200 may be, for example, a copper wire. Of course, the cable 200 is not limited to copper wire, but may be other metal wire, such as aluminum wire, etc., and the application is not limited thereto.

In the present embodiment, the battery pack mounting portion 306 is provided on the first case 310. For example, as shown in fig. 1, the battery pack mounting portion 306 is provided on the lower side of the first case 310. The battery pack mounting portion 306 is used to connect the battery pack 302. And the battery pack 302 is used to provide power to the motor 109. In this embodiment, the battery pack 302 is slidably fitted to the battery pack mounting portion. Specifically, when the battery pack 302 is attached to the battery pack mounting portion 306, the battery pack 302 forms a circuit with the control unit and the motor 109. So that the battery pack 302 can provide power to the motor 109. The control device 301 is such that the battery pack 302 is provided separately from the electric power tool 100. I.e., such that the battery pack 302 is external with respect to the power tool 100. Compared with the electric tool 100 in the prior art, the electric tool is smaller in size, lighter and more convenient to operate, more convenient to carry and better in man-machine experience.

Further, the control unit is electrically connected to the battery pack mounting portion 306 or the power plug portion, so that the battery pack 302 or an external power source can provide power to the control unit. Specifically, when the battery pack 302 is electrically connected to the battery pack mounting portion 306, the battery pack 302 forms a loop with the control unit and the motor 109. When the external power source is electrically connected to the power plug 25, the external power source forms a loop with the control unit and the motor 109, so that the external power source can provide power for the motor 109. Further, the control unit may select one of the battery pack mounting portion 306 and the power plug portion to be electrically connected through the control circuit, so as to prevent the control unit from being connected to the battery pack mounting portion 306 and the power plug portion at the same time.

Further, when the control unit is electrically connected to the power plug, the control unit is further configured to transform the voltage of the external power source to control the voltage distributed to the motor 109 by the external power source. Specifically, the control unit further comprises a rectification module. The rectifying module is used for transforming the external power supply. For example, the rectifier module is used for converting the voltage output by the external power supply into a direct-current voltage within a preset voltage range and outputting the direct-current voltage to the control unit. Since the operating voltage of the motor 109 is usually a dc voltage, when the external power source is an ac power, the ac power of the external power source can be converted into a dc power by the rectifier module for the motor 109 to use. For example, when the external power source is 220 v, 50 hz ac voltage, the 220 v, 50 hz ac voltage can be converted into, for example, 250 v dc voltage by the rectifier module.

In one embodiment, as shown in fig. 4 and 5, the control device 301 according to the embodiment of the present invention further includes: a battery pack 302 for connection to the battery pack mounting portion 306; or an external power supply for connecting to the power supply interface; both battery pack 302 and an external power source are used to provide power to motor 109. The external power source may be a backpack power source. For example, the external power source is a backpack power source or a belt pack power source. Of course, the external power source is not limited to the backpack power source, and may be another power source, which is not limited in this application.

As can be seen from the above, the electric tool system according to the embodiment of the present application includes a first housing 310, a control unit, a battery pack mounting portion 306, and a second interface 305; so that a control unit for controlling the operating parameters of the motor 109 is not required to be provided in the electric power tool 100; and eliminates the need for a power source within the power tool 100 to provide power to the motor 109. I.e., the control unit, power source, and power tool 100 are provided separately. This can reduce the volume and weight of the power tool 100. On the other hand, when the second housing 101 is held by hand to operate the electric power tool 100, the cable 200 can be bent, so that the distance between the electric power tool 100 and the control device 301 can be changed during operation, thereby facilitating the movement of the electric power tool 100 and improving the human-computer experience. On the other hand, the control device 301 in the power tool system according to the embodiment of the present invention is used in a plurality of types of power tools 100, so that the adaptability of the control device 301 can be improved, and the production cost of the power tool 100 can be reduced. Further, the electric power tool 100 in the electric power tool system according to the embodiment of the present invention employs the brushless motor 109, and therefore, the efficiency is higher.

In one embodiment, as shown in fig. 4 and 5, the electric tool system according to the embodiment of the present application further includes: a switch 308. The switch 308 is used to control the turning on and off of the motor 109. Specifically, the switch 308 may be disposed on the second housing 101. So that the on and off of the motor 109 can be controlled by the switch 308 while holding the second housing 101. Of course, the switch 308 is not limited to be disposed on the second casing 101, and may be disposed on the first casing 310. So that the switch 308 can control the turning on and off of the motor 109 while holding the first housing 310. Further, the switch 308 may further include a first switch disposed on the first housing 310 and a second switch disposed on the second housing 101. The first switch can be electrically connected with the second switch, and the second switch can be opened only when the first switch is in an opening state; thus, safety accidents caused by mistakenly opening the electric tool can be avoided, and the use safety of the electric tool 100 is improved. The switch 308 may be a membrane switch 308. Of course, the switch 308 is not limited to the membrane switch 308, and other switches 308, such as a light-sensitive switch 308, may be used, which is not limited in this application.

In one possible embodiment, the control function of the power tool 100 is still assumed by the power tool 100 itself, and the control device 301 is only responsible for generating the control signal to the power tool 100. Specifically, a second control unit for controlling the operating parameters of the motor 309 is disposed inside the electric tool 100, and the second control unit is electrically connected to the first interface 103. The control device 301 is provided with a first user operated unit for user operation to adjust operating parameters of the motor 109. When the control device 301 is electrically connected with the electric tool 100 through the cable 200, the signal core wire is electrically connected with the first user operation unit and the second control unit; thus, the second control unit can adjust the operating parameters of the heat gun 100 according to the operating commands transmitted by the first user operating unit.

In one possible embodiment, the first user operating unit comprises a throttle knob 309. In operation, if the user adjusts the speed adjusting button 309, the second control unit can obtain the adjustment command from the user through the cable 200 and the electrical connector, and adjust the operating parameter of the motor 109 according to the adjustment command from the user. Thus, the speed regulation function of the electric tool main body is integrated on the control device 301, that is, the control device 301 can be adopted to output the speed regulation signal to the electric tool 100, and further, the electric tool 100 does not need to be integrated with the speed regulation function.

Any numerical value recited herein includes all values from the lower value to the upper value that are incremented by one unit, provided that there is a separation of at least two units between any lower value and any higher value. For example, if it is stated that the number of a component or a value of a process variable (e.g., temperature, pressure, time, etc.) is from 1 to 90, preferably from 20 to 80, and more preferably from 30 to 70, it is intended that equivalents such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also expressly enumerated in this specification. For values less than 1, one unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are only examples of what is intended to be explicitly recited, and all possible combinations of numerical values between the lowest value and the highest value that are explicitly recited in the specification in a similar manner are to be considered.

Unless otherwise indicated, all ranges are inclusive of the endpoints and all numbers between the endpoints. The use of "about" or "approximately" with a range applies to both endpoints of the range. Thus, "about 20 to about 30" is intended to cover "about 20 to about 30", including at least the endpoints specified.

It is to be understood that the above description is intended to be illustrative, and not restrictive. Many embodiments and many applications other than the examples provided would be apparent to those of skill in the art upon reading the above description. The scope of the present teachings should, therefore, be determined not with reference to the above description, but should instead be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled. The disclosures of all articles and references, including patent applications and publications, are hereby incorporated by reference for all purposes. The omission in the foregoing claims of any aspect of the subject matter that is disclosed herein is not intended to forego such subject matter, nor should the inventors be construed as having contemplated such subject matter as being part of the disclosed inventive subject matter.

Claims (10)

1. A heat gun, comprising: a cylindrical housing, a heating assembly, a DC motor, and a fan located in the cylindrical housing; one end of the cylindrical shell is provided with an air outlet; the motor drives the fan to rotate to generate airflow, and the airflow is heated by the heating assembly and finally output through the air outlet; the cylindrical shell is provided with a first interface which is electrically connected with the motor and the heating assembly; the first interface is used for detachably connecting a cable and connecting an external direct current power supply through the cable.

2. The heat gun of claim 1, wherein the cylindrical case has a leading end and a trailing end along its length; the air outlet is located at the front end of the cylindrical shell, and the first interface is located at the tail end.

3. The heat gun of claim 1, wherein the weight of the heat gun is below 350 grams.

4. The heat gun according to claim 1, wherein the outer diameter of the cylindrical case is not more than 50 mm.

5. The heat gun according to claim 1, wherein the ratio of the voltage of the external direct current power supply to the outer diameter of the cylindrical case is greater than 0.4V/mm.

6. The heat gun of claim 1, wherein the power of the heat gun is below 300W.

7. A heat gun system, comprising:

a heat gun according to any one of claims 1 to 6;

an adapter having a battery pack mounting portion; the battery pack mounting part is used for detachably mounting a battery pack; the adapter is detachably connected with the first interface of the hot air gun through a cable.

8. Heat gun system according to claim 7, wherein the adapter is further provided with a control unit for controlling the operating parameters of the DC motor.

9. The heat gun system according to claim 7, wherein the battery pack mounting part is adapted to accommodate battery packs of at least two different battery capacities.

10. Heat gun system according to claim 7, wherein the adapter is further provided with a switch for controlling the switching on and off of the DC motor.

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