CN221669658U - Electric tool motor - Google Patents

Abstract

The utility model provides an electric tool motor, and belongs to the technical field of motors. The utility model relates to an electric tool motor, which comprises a stator, wherein a rotor is rotationally connected to the top of the stator, the rotor comprises a shell, radiating fins are fixedly arranged on the outer side of the shell, a fixing shell is fixedly arranged on the outer side of the radiating fins, two ends of each radiating fin are arranged on the outer side of the fixing shell, and each radiating fin is in a spiral structure.

Description

Electric tool motor

Technical Field

The utility model relates to the technical field of motors, and in particular to an electric tool motor.

Background Art

The motor for power tools is a motor that drives the power tools to rotate or reciprocate. It usually uses a DC motor or an AC motor. The DC motor generally uses a brushed DC motor or a brushless DC motor. They have the characteristics of high speed, high torque, and high efficiency, and can meet the power output requirements of power tools. The rotor of the brushed DC motor is composed of permanent magnets, has a high starting torque and overload capacity, and is suitable for heavy-load starting occasions. The brushless DC motor uses an electronic commutator instead of brushes and commutators. It has the advantages of low noise, long life, and high efficiency. It is suitable for occasions with high requirements for noise and vibration. AC motors usually use induction motors or synchronous motors. They have the advantages of simple structure, easy maintenance, and low cost, but the speed and torque are relatively low. The induction motor generates a rotating magnetic field through the stator winding, drives the rotor to rotate, and realizes the conversion of electric energy. The synchronous motor generates a rotating magnetic field through DC excitation, drives the rotor to rotate, and realizes the conversion of electric energy.

Based on the above, the inventors have discovered the following problems: current electric tools usually use brushless motors with outer rotors to obtain higher rotation speeds and torques. In order to dissipate heat, such brushless motors have through holes at the base and one end of the casing to facilitate heat dissipation of the internal coils. However, the working environment of the electric tools is prone to generate a large amount of dust. The dust is sucked into the motor and can easily damage the enameled wire, causing the coils wound with the enameled wire to be prone to short circuits, which is quite inconvenient.

Therefore, in view of this, research and improvement are conducted on the existing structure and defects, and an electric tool motor is provided to achieve the purpose of having more practical value.

Utility Model Content

In order to solve the above technical problems, the embodiment of the utility model provides an electric tool motor, which is specifically implemented by the following technical solutions:

An electric tool motor comprises a stator, the top of which is rotatably connected to a rotor, the rotor comprises a shell, a heat sink fin is fixedly mounted on the outer side of the shell, a fixed shell is fixedly mounted on the outer side of the heat sink fin, both ends of the heat sink fin are arranged on the outer side of the fixed shell, and the heat sink fin has a spiral structure.

The beneficial effect of adopting the above-mentioned further scheme is that the rotor is rotatably connected to the top of the stator, so that the stator is energized to drive the rotor to rotate, thereby providing power for the electric tool. Cooling fins are fixedly installed on the outside of the outer shell, so that the cooling fins can dissipate the heat generated inside the outer shell. A fixed shell is fixedly installed on the outside of the cooling fins, so that the fixed shell can fix and protect the cooling fins. Both ends of the cooling fins are arranged on the outside of the fixed shell, and the cooling fins have a spiral structure, which facilitates the rotation of the outer shell to generate airflow at both ends of the outside of the fixed shell. The airflow flows through the surface of the cooling fins to take away the heat, thereby achieving the effect of fully dissipating the heat for the device.

Furthermore, the stator comprises a base, a fixing seat is provided on the top of the base, a winding frame is fixedly mounted on the top of the fixing seat, a winding groove is opened on the surface of the winding frame, and enameled wire is wound in the winding groove.

The beneficial effect of adopting the above further scheme is that winding grooves are opened on the surface of the winding frame, and enameled wires are wound in the winding grooves, so that the enameled wires are energized to generate a rotating magnetic field, thereby driving the rotor to rotate.

Furthermore, a power interface is provided on one side of the base, and the power interface is electrically connected to the enameled wire.

The beneficial effect of adopting the above further scheme is that a power interface is opened on one side of the base, and the power interface is electrically connected to the enameled wire, which facilitates the connection between the power supply of the motor tool and the power interface, and facilitates the power supply to the enameled wire.

Furthermore, there are 12 winding grooves.

The beneficial effect of adopting the above further solution is that by opening 12 winding grooves, it is convenient to wind the enameled wire into 12 windings, thereby facilitating the generation of a uniform rotating magnetic field.

Furthermore, a bearing is provided in the middle of the winding frame, a bearing groove is opened in the middle of the top end of the fixing seat, and the bottom of the bearing is fixedly connected to the bearing groove.

The beneficial effect of adopting the above further scheme is that a bearing groove is opened in the middle of the top of the fixed seat, and the bottom of the bearing is fixedly connected to the bearing groove, which facilitates the fixed installation of the bearing on the base, facilitates the fixed connection between the rotor and the bearing, and enables the rotor to be rotatably connected to the stator.

Furthermore, a rotating shaft is fixedly installed on the top of the inner side of the shell, the rotating shaft passes through the bearing, the rotating shaft is fixedly connected to the inner side of the bearing, and the winding frame is fixedly connected to the outer side of the bearing.

The beneficial effect of adopting the above further solution is that the rotor and the stator are rotatably connected by fixing the rotating shaft to the inner side of the bearing and fixing the winding frame to the outer side of the bearing.

Furthermore, a permanent magnet is fixedly mounted on the inner side of the shell.

The beneficial effect of adopting the above further solution is that the permanent magnet is fixedly mounted on the inner side of the housing, so that the rotating magnetic field generated by the enameled wire can drive the rotor to rotate.

Furthermore, there are 14 permanent magnets, and the permanent magnets are arranged in a ring array.

The beneficial effect of adopting the above further solution is that by providing 14 permanent magnets and arranging the permanent magnets in a circular array, the permanent magnets form 7 sets of pole pairs, and the device can generate greater torque and rotation speed.

Furthermore, a connector is fixedly mounted on the top of the shell.

The beneficial effect of adopting the above further solution is that a connector is fixedly installed on the top of the shell, which facilitates the fixed connection between the output end of the motor tool and the connector, and facilitates the device to output power to the electric tool.

Furthermore, a mounting groove is provided at the bottom of the base.

The beneficial effect of adopting the above further solution is that, by providing a mounting groove at the bottom of the base, it is convenient to fix the device to the inside of the electric tool.

The beneficial effects of the utility model are as follows: an electric tool motor obtained by the utility model through the above-mentioned design, the electric tool motor is connected to the rotor through the top of the stator, so that the stator is energized to drive the rotor to rotate, thereby providing power for the electric tool, and cooling fins are fixedly installed on the outside of the outer shell, so that the cooling fins can dissipate the heat generated inside the outer shell, and a fixed shell is fixedly installed on the outside of the cooling fins, so that the fixed shell can fix and protect the cooling fins, and both ends of the cooling fins are arranged on the outside of the fixed shell, and the cooling fins are in a spiral structure, so that the rotation of the outer shell makes the cooling fins generate airflow at both ends of the outside of the fixed shell, and the airflow flows through the surface of the cooling fins to take away the heat, thereby achieving the effect of fully dissipating the heat for the device, and can effectively prevent the dust generated by the electric tool from entering the inside of the motor, and has a high practical value.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

FIG1 is a schematic diagram of the three-dimensional structure of a power tool motor provided by the utility model;

FIG2 is an exploded view of an electric tool motor provided by the utility model;

FIG3 is a schematic diagram of the three-dimensional structure of the heat dissipation fins provided by the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the rotor provided by the utility model;

FIG5 is an exploded view of a stator provided by the present invention;

FIG. 6 is a schematic diagram of the three-dimensional structure of the base provided by the utility model.

In the figure: 101, rotor; 10101, shell; 10102, heat dissipation fins; 10103, fixed shell; 10104, connector; 10105, shaft; 10106, permanent magnet; 102, stator; 10201, base; 10202, power interface; 10203, fixed seat; 10204, bearing slot; 10205, winding frame; 10206, enameled wire; 10207, bearing; 10208, mounting slot.

DETAILED DESCRIPTION

In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Embodiment 1 of the utility model of an electric tool motor

The utility model provides the following technical solutions: as shown in Figures 1-3, an electric tool motor includes a stator 102, the top of the stator 102 is rotatably connected to a rotor 101, the top of the stator 102 is rotatably connected to the rotor 101, so that the stator 102 is energized to drive the rotor 101 to rotate, thereby providing power for the electric tool, the rotor 101 includes a shell 10101, the outer side of the shell 10101 is fixedly equipped with a heat dissipation fin 10102, the outer side of the shell 10101 is fixedly equipped with a heat dissipation fin 10102, the heat dissipation fin 10102 is convenient for the heat dissipation fin 10102 to dissipate the heat generated inside the shell 10101, and the outer side of the heat dissipation fin 10102 is fixedly equipped with a fixed shell 10103, a fixed shell 10103 is fixedly installed on the outside of the heat dissipation fin 10102, so that the fixed shell 10103 can fix and protect the heat dissipation fin 10102. Both ends of the heat dissipation fin 10102 are arranged on the outside of the fixed shell 10103, and the heat dissipation fin 10102 has a spiral structure. Both ends of the heat dissipation fin 10102 are arranged on the outside of the fixed shell 10103, and the heat dissipation fin 10102 has a spiral structure, so that the rotation of the outer shell 10101 can make the heat dissipation fin 10102 generate airflow at both ends of the outside of the fixed shell 10103, and the airflow flows through the surface of the heat dissipation fin 10102 to take away the heat, thereby achieving the effect of fully dissipating the heat for the device.

Embodiment 2 of the utility model of an electric tool motor

1-5, the stator 102 includes a base 10201, a fixed seat 10203 is provided on the top of the base 10201, a winding frame 10205 is fixedly installed on the top of the fixed seat 10203, a winding groove is provided on the surface of the winding frame 10205, and an enameled wire 10206 is wound around the winding groove. The winding groove is provided on the surface of the winding frame 10205, and the enameled wire 10206 is wound around the winding groove, so that the enameled wire 10206 is energized to generate a rotating magnetic field, which is convenient for driving the rotor 101 to rotate. A power interface 10202 is provided on one side of the base 10201, and the power interface 10202 is electrically connected to the enameled wire 10206. A power interface 10202 is provided on one side of the base 10201, and the power interface 10202 is electrically connected to the enameled wire 10206, which is convenient for motor tools The power supply is connected to the power supply interface 10202, which is convenient for the power supply to supply power to the enameled wire 10206. There are 12 winding grooves, and 12 winding grooves are opened to facilitate the enameled wire 10206 to be wound into 12 windings, so as to facilitate the generation of a uniform rotating magnetic field. A bearing 10207 is provided in the middle of the winding frame 10205, and a bearing groove 10204 is provided in the middle of the top of the fixed seat 10203. The bottom of the bearing 10207 is fixedly connected to the bearing groove 10204. A bearing groove 10204 is provided in the middle of the top of the fixed seat 10203, and the bottom of the bearing 10207 is fixedly connected to the bearing groove 10204, so as to facilitate the fixed installation of the bearing 10207 on the base 10201, and facilitate the fixed connection between the rotor 101 and the bearing 10207, so that the rotor 101 can be rotatably connected to the stator 102.

Embodiment 3 of the utility model of an electric tool motor

1-6, a rotating shaft 10105 is fixedly installed on the top of the inner side of the shell 10101, and the rotating shaft 10105 passes through the bearing 10207. The rotating shaft 10105 is fixedly connected to the inner side of the bearing 10207, and the winding frame 10205 is fixedly connected to the outer side of the bearing 10207. The rotating shaft 10105 is fixedly connected to the inner side of the bearing 10207, and the winding frame 10205 is fixedly connected to the outer side of the bearing 10207, so that the rotor 101 and the stator 102 can be rotatably connected. A permanent magnet 10106 is fixedly installed on the inner side of the shell 10101. The permanent magnet 10106 is fixedly installed on the inner side of the shell 10101, so that the rotating magnetic field generated by the enameled wire 10206 drives the rotor 101 to rotate. There are 14 magnets 10106, and the permanent magnets 10106 are arranged in a circular array. There are 14 permanent magnets 10106, and the permanent magnets 10106 are arranged in a circular array, so that the permanent magnets 10106 form 7 sets of poles, and the device can generate greater torque and speed. A connector 10104 is fixedly installed on the top of the shell 10101. The connector 10104 is fixedly installed on the top of the shell 10101, which is convenient for the output end of the motor tool to be fixedly connected with the connector 10104, and the device is convenient for outputting power to the electric tool. An installation groove 10208 is opened at the bottom of the base 10201. The installation groove 10208 is opened at the bottom of the base 10201, which is convenient for fixing the device to the inside of the electric tool.

Specifically, the working principle of the electric tool motor is as follows: when in use, a power interface 10202 is provided on one side of the base 10201, and the power interface 10202 is electrically connected to the enameled wire 10206, so that the power supply of the motor tool is connected to the power interface 10202, and the power supply is convenient for the enameled wire 10206 to be powered by the power supply; a winding groove is provided on the surface of the winding frame 10205, and the enameled wire 10206 is wound in the winding groove, so that the enameled wire 10206 is energized to generate a rotating magnetic field, so as to drive the rotor 101 to rotate; a connector 10104 is fixedly installed on the top of the shell 10101, so that the output end of the motor tool is fixedly connected to the connector 10104, so that the device can output power to the electric tool; an installation groove 10104 is provided on the bottom of the base 10201 208, it is convenient to fix the device with the inside of the power tool, and the heat dissipation fins 10102 are fixedly installed on the outside of the shell 10101, so that the heat dissipation fins 10102 can dissipate the heat generated inside the shell 10101, and the fixed shell 10103 is fixedly installed on the outside of the heat dissipation fins 10102, so that the fixed shell 10103 can fix and protect the heat dissipation fins 10102. Both ends of the heat dissipation fins 10102 are arranged on the outside of the fixed shell 10103, and the heat dissipation fins 10102 are in a spiral structure, so that the rotation of the shell 10101 can generate airflow at both ends of the outside of the fixed shell 10103, and the airflow flows through the surface of the heat dissipation fins 10102 to take away the heat, thereby achieving the effect of fully dissipating the heat for the device.

The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (10)

1. The utility model provides an electric tool motor, its characterized in that includes stator (102), stator (102) top rotates and is connected with rotor (101), rotor (101) are including shell (10101), shell (10101) outside fixed mounting has radiator fin (10102), radiator fin (10102) outside fixed mounting has fixed shell (10103), radiator fin (10102) both ends all set up in the outside of fixed shell (10103), just radiator fin (10102) are heliciform structure.

2. The electric tool motor according to claim 1, wherein the stator (102) comprises a base (10201), a fixing seat (10203) is arranged at the top of the base (10201), a winding frame (10205) is fixedly arranged at the top of the fixing seat (10203), a winding groove is formed in the surface of the winding frame (10205), and an enameled wire (10206) is wound around the winding groove.

3. The electric tool motor according to claim 2, wherein a power interface (10202) is provided on one side of the base (10201), and the power interface (10202) is electrically connected to the enamel wire (10206).

4. The electric tool motor of claim 2, wherein 12 winding slots are provided.

5. The electric tool motor according to claim 4, wherein a bearing (10207) is provided in the middle of the bobbin (10205), a bearing groove (10204) is provided in the middle of the top end of the fixing seat (10203), and the bottom of the bearing (10207) is fixedly connected with the bearing groove (10204).

6. The electric tool motor according to claim 4, wherein a rotating shaft (10105) is fixedly mounted on the top of the inner side of the housing (10101), the rotating shaft (10105) penetrates through a bearing (10207), the rotating shaft (10105) is fixedly connected with the inner side of the bearing (10207), and the winding frame (10205) is fixedly connected with the outer side of the bearing (10207).

7. A power tool motor according to claim 6, wherein the housing (10101) is fixedly mounted with permanent magnets (10106) on its inner side.

8. A power tool motor according to claim 7, wherein 14 permanent magnets (10106) are provided, and the permanent magnets (10106) are arranged in an annular array.

9. A power tool motor according to claim 6, wherein the top of the housing (10101) is fixedly provided with a connector (10104).

10. The electric tool motor according to claim 2, wherein the base (10201) is provided with a mounting groove (10208) at the bottom.