Wear-resistant high-load small brush motor

Abstract

The invention discloses a wear-resistant high-load small brush motor, and relates to the field of brush motors, and the wear-resistant high-load small brush motor comprises a housing, a rear cover is fixed on the housing, bearings are fixed on the housing and the rear cover, a rotating shaft is rotatably connected between the two bearings, a rotor is fixed on the rotating shaft, a stator is fixed in the housing, and a rotor is fixed on the stator. A heat dissipation mechanism is arranged on the rear cover, a turbulent flow mechanism is arranged on the shell, a commutator is fixed on the rotating shaft, and two symmetrical carbon brushes are fixed on the rear cover. When the rotor drives the rotating shaft to rotate on the bearing, the rotating shaft drives the heat dissipation mechanism, the heat dissipation mechanism dissipates heat in the shell, and meanwhile, the heat dissipation mechanism drives the turbulent flow mechanism to enable the turbulent flow mechanism to improve the heat dissipation effect of the heat dissipation mechanism, so that when the brush motor works, the heat dissipation efficiency of the brush motor is improved. The possibility that heat generated by high-load rotation is accumulated in the shell is reduced, the possibility that normal work of the brush motor is affected by high temperature is reduced, and the service life of the brush motor is further prolonged.

Description

Technical Field

[0001] The present application relates to the field of brushed motors, and in particular to a wear-resistant, high-load small brushed motor. Background Art

[0002] A brushed motor is a rotating motor that contains a brush device that converts electrical energy into mechanical energy or mechanical energy into electrical energy. The brushed motor is the basis of all motors. It has the characteristics of fast starting, timely braking, smooth speed regulation over a wide range, and relatively simple control circuit.

[0003] The brushed motor consists of two major parts: the stator and the rotor. The stator has magnetic poles and the rotor has windings. When power is turned on, a magnetic field is also formed on the rotor. There is an angle between the magnetic poles of the stator and rotor. The mutual attraction of the magnetic fields of the stator and rotor makes the motor rotate. By changing the position of the brush, the direction of the angle between the stator and rotor magnetic poles can be changed, thereby changing the direction of rotation of the motor.

[0004] When the brush motor is working, the air gap between the stator and the rotor is small, which causes the stator and the rotor to collide, abnormal vibration or noise of the motor, high power supply voltage, increased excitation current, motor phase loss movement and other reasons will cause the brush motor to heat up when working. In order to reduce the impact of heat on the normal operation of the motor, heat dissipation holes are generally opened on the motor casing or a casing with good heat dissipation material is used to dissipate the heat of the motor. However, this heat dissipation method has limited heat dissipation effect and it is difficult to dissipate the heat of the motor well. Summary of the invention

[0005] The purpose of the present application is to solve the problem proposed in the above background technology that in order to reduce the influence of heat on the normal operation of the motor, heat dissipation holes are generally opened on the motor casing or the motor is cooled by a casing with good heat dissipation material, but this heat dissipation method has limited heat dissipation effect and it is difficult for the motor to dissipate heat well. The present application provides a wear-resistant and high-load small brushed motor.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A wear-resistant and high-load small brushed motor comprises a shell, a rear cover is fixed on the shell, bearings are fixed on both the shell and the rear cover, a rotating shaft is rotatably connected between the two bearings, a rotor is fixed on the rotating shaft, a stator is fixed in the shell, a heat dissipation mechanism is arranged on the rear cover, a spoiler mechanism is arranged on the shell, a commutator is fixed on the rotating shaft, and two symmetrical carbon brushes are fixed on the rear cover.

[0007] By adopting the above technical scheme, the rotor core is made of high-quality cold-rolled silicon steel sheets, which ensures the magnetic permeability while reducing the weight. The stator winding adopts high-strength insulating enameled wire, the carbon brush adopts graphite copper composite material, and the back cover and motor housing are preferably made of aluminum alloy. When the stator winding is energized, the magnetic field generated interacts with the magnetic field generated by the rotor to form a driving torque to rotate the rotor. The cooperation of the commutator and the carbon brush realizes the continuous conversion of current, so that the motor can continue to work at different phases. When the rotor drives the shaft to rotate on the bearing, the shaft drives the heat dissipation mechanism, and the heat dissipation mechanism dissipates the heat in the casing. At the same time, the heat dissipation mechanism drives the spoiler mechanism, so that the spoiler mechanism increases the heat dissipation effect of the heat dissipation mechanism, so that when the brushed motor is working, the possibility of heat generated by high-load rotation accumulating in the casing is reduced, and the possibility of high temperature affecting the normal operation of the brushed motor is reduced, thereby further improving the service life of the brushed motor.

[0008] Furthermore, the heat dissipation mechanism includes a heat dissipation plate arranged on the back cover, the heat dissipation plate is fixedly connected to the rotating shaft, the heat dissipation plate is provided with evenly distributed inclined wind tunnels, the outer shell is provided with a heat conduction component, and the back cover and the outer shell are provided with evenly distributed heat dissipation holes.

[0009] By adopting the above technical solution, the heat generated in the shell is dissipated from the heat dissipation holes on the shell and the back cover. At the same time, the rotating shaft drives the heat dissipation plate, so that the inclined wind tunnel produces suction on the heat dissipation holes on the back cover. At the same time, the heat conduction component is connected to the external water circulation device, so that the heat of the shell is transferred to the heat conduction component, and then the external water circulation device takes away the heat of the heat conduction component, so that the brush motor can be efficiently dissipated, reducing the possibility of heat accumulation in the brush motor shell, affecting the normal operation of the brush motor, and prolonging the service life of the brush motor. Furthermore, the heat-conducting assembly includes two heat-conducting cabins symmetrically fixed on the outer shell, a water inlet pipe is provided on one side of the two heat-conducting cabins, the water inlet pipe is fixedly connected to the two heat-conducting cabins, the water inlet pipe is communicated with the two heat-conducting cabins, and a water outlet pipe is provided on the other side of the two heat-conducting cabins, the water outlet pipe is fixedly connected to the two heat-conducting cabins, and the water outlet pipe is communicated with the two heat-conducting cabins.

[0010] By adopting the above technical solution, the water inlet pipe and the water outlet pipe are first connected to the external water circulation device, so that the water flows into the heat transfer cabin from the water inlet pipe, and the heat of the brush motor casing is transferred to the heat transfer cabin. The heat of the heat transfer cabin is absorbed by the water in the heat transfer cabin, thereby further cooling the brush motor casing and reducing the possibility of high heat generated by the brush motor during operation.

[0011] Furthermore, a plurality of heat dissipation plates are arranged in the heat-conducting cabin, the heat dissipation plates are fixedly connected to the heat-conducting cabin, and the heat dissipation plates penetrate the heat-conducting cabin and extend into the outer shell.

[0012] By adopting the above technical solution, the shell transfers heat to the heat conduction cabin, and then the heat conduction cabin transfers heat to the heat sink. When water flows through the heat conduction cabin, the water flows in contact with the heat sink, thereby improving the efficiency of transferring the heat in the shell to the water flow, further improving the heat dissipation efficiency.

[0013] Furthermore, a plurality of the heat dissipation plates are distributed in a staggered manner.

[0014] By adopting the above technical solution, when the heat sink is fixed in the heat conduction cabin, one end of the heat sink is in contact with the inner wall of the heat conduction cabin, and the other end is kept at a distance from the heat conduction cabin, thereby increasing the contact area between the water flow and the heat conduction cabin and improving the heat dissipation efficiency.

[0015] Furthermore, the spoiler mechanism includes a plurality of spoilers arranged in the heat conduction cabin, the spoilers are threadedly distributed, support blocks are fixed at both ends of the spoilers, the support blocks are rotatably connected to the heat conduction cabin, and a synchronization component is arranged between one end of the heat conduction cabin and the heat dissipation plate.

[0016] By adopting the above technical solution, the rotating shaft drives the heat sink, and then the heat sink drives the synchronous component, the synchronous component drives a number of support blocks to rotate, and the support blocks drive the spoiler to rotate, stirring the flowing water, thereby reducing the possibility of heat absorption stratification when the water flows through the heat transfer cabin, allowing the water to absorb heat more evenly and improve the heat absorption efficiency.

[0017] Furthermore, the synchronization component includes a plurality of rotating rods rotatably connected to the heat conduction cabin, gears are fixed on the rotating rods, and evenly distributed teeth and grooves are formed on the heat dissipation plate, and the gears are meshed with the teeth and grooves on the heat dissipation plate.

[0018] By adopting the above technical solution, when the rotating shaft drives the heat sink to rotate, the teeth on the heat sink drive the gear, and then the gear drives the support block through the rotating rod, so that the support block drives the spoiler to rotate, thereby facilitating the rotation of the spoiler in the heat conduction cabin, allowing the spoiler to stir the water flow in the heat conduction cabin.

[0019] Furthermore, a protective cover is fixed on the heat conduction cabin, and the protective cover corresponds to the rotating rod and the gear.

[0020] By adopting the above technical solution, protective covers are fixed on both heat dissipation compartments, and the protective covers cover a plurality of rotating rods and gears, thereby reducing the possibility of debris factors affecting the normal rotation of the gears and rotating rods.

[0021] In summary, the present application includes at least one of the following beneficial effects: 1. In the present application, the rotor core is made of high-quality cold-rolled silicon steel sheets, which ensures the magnetic permeability while reducing the weight. The stator winding adopts high-strength insulating enameled wire, the carbon brush adopts graphite copper composite material, and the back cover and the motor housing are preferably made of aluminum alloy, which is light and strong, and has good heat dissipation performance. When the rotor drives the shaft to rotate on the bearing, the shaft drives the heat dissipation plate, and the heat dissipation plate rotates with the shaft. When the heat dissipation plate rotates, the inclined wind tunnel on the heat dissipation plate rotates with it, so that the inclined wind tunnel generates suction on the heat dissipation holes on the back cover, and the heat in the shell is extracted from the heat dissipation holes on the back cover. At the same time, the water inlet pipe and the water outlet pipe are connected to the water circulation device outside The connection is made to allow water to flow into the thermal cabin from the water inlet pipe and then out from the water outlet pipe of the thermal cabin. When the brush motor is working, the heat of the brush motor casing is transferred to the thermal cabin, the heat of the thermal cabin is absorbed by the water in the thermal cabin, and then the water that absorbs the heat is discharged from the thermal cabin from the water outlet pipe, thereby cooling the casing, enhancing the electrical performance and temperature resistance, maintaining good conductivity and improving wear resistance, and at the same time, when the brush motor is working, reducing the possibility of heat generated by high-load rotation accumulating in the casing, reducing the possibility of high temperature affecting the normal operation of the brush motor, and further improving the service life of the brush motor.

[0022] 2. In the present application, when the heat sink rotates, the teeth on the heat sink drive the gears, and the gears rotate under the support of the rotating rod. Then the gears drive the rotating rod, and the rotating rod drives the supporting block, and the supporting block drives the spoiler to rotate, so as to stir the flowing water, so that when the water absorbs heat from the heat transfer cabin, the water absorbs the heat from the heat transfer cabin fully and evenly, thereby achieving the purpose of reducing the possibility of heat absorption stratification when the water flows through the heat transfer cabin, making the water absorb heat more evenly and improving the heat absorption efficiency.

[0023] 3. The present application protects the rotating rods and gears by fixing protective covers on both heat dissipation compartments and allowing the protective covers to cover a number of rotating rods and gears, thereby achieving the purpose of reducing the possibility of debris factors affecting the normal rotation of the gears and rotating rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the first three-dimensional structure of a brushless motor in the present application; Figure 2 It is a schematic diagram of the internal structure of the brushless motor in this application; Figure 3 It is a schematic diagram of the disassembled structure of the brushless motor in this application; Figure 4 This application Figure 2 The enlarged schematic diagram at A in the middle; Figure 5 This application Figure 3 Enlarged schematic diagram of point B in the middle.

[0025] Description of reference numerals: 1. Shell; 2. Back cover; 3. Stator; 4. Rotor; 5. Rotating shaft; 6. Bearing; 7. Heat dissipation mechanism; 71. Heat dissipation hole; 72. Heat dissipation plate; 73. Heat conduction component; 731. Heat conduction cabin; 732. Water inlet pipe; 733. Water outlet pipe; 734. Heat dissipation plate; 74. Inclined wind tunnel; 8. Spoiler mechanism; 81. Support block; 82. Spoiler; 83. Synchronizing component; 831. Rotating rod; 832. Gear; 833. Tooth groove; 84. Protective cover; 9. Commutator; 10. Carbon brush. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1 —5 further describes this application in detail.

[0027] The embodiments of the present application disclose a wear-resistant and high-load small brushed motor.

[0028] Reference Figure 1 , Figure 2 and Figure 3 A wear-resistant and high-load small brush motor comprises a shell 1, a back cover 2 is fixed on the shell 1, bearings 6 are fixed on both the shell 1 and the back cover 2, a rotating shaft 5 is rotatably connected between the two bearings 6, a rotor 4 is fixed on the rotating shaft 5, a stator 3 is fixed in the shell 1, a heat dissipation mechanism 7 is arranged on the back cover 2, a spoiler mechanism 8 is arranged on the shell 1, a commutator 9 is fixed on the rotating shaft 5, and two symmetrical carbon brushes 10 are fixed on the back cover 2.

[0029] When producing the brushed motor, the rotor 4 core is made of high-quality cold-rolled silicon steel sheets, which ensures the magnetic permeability while reducing the weight. The stator 3 winding adopts high-strength insulating enameled wire to enhance the electrical performance and temperature resistance. The carbon brush 10 adopts a graphite copper composite material, which not only maintains good conductivity but also improves wear resistance. The back cover and the motor housing are preferably made of aluminum alloy, which is light and strong, and has good heat dissipation performance. Then the corresponding shell 1, back cover 2, stator 3, steering gear, bearing 6, shaft 5 and rotor 4 are assembled, and then the heat dissipation mechanism 7 is installed on the shell 1 and the back cover 2. At the same time, a spoiler mechanism 8 is added to the heat dissipation mechanism 7 on the shell 1. When the brushed motor is in use, the stator 3 winding is energized to generate a magnetic field that interacts with the magnetic field generated by the rotor 4 to form a driving torque to rotate the rotor 4. The cooperation of the commutator 9 and the carbon brush 10 realizes the continuous conversion of current, so that the motor It can work continuously in different phases. When the rotor 4 drives the rotating shaft 5 to rotate on the bearing 6, the rotating shaft 5 drives the heat dissipation mechanism 7, and the heat dissipation mechanism 7 dissipates heat in the outer shell 1. At the same time, the heat dissipation mechanism 7 drives the spoiler mechanism 8, so that the spoiler mechanism 8 increases the heat dissipation effect of the heat dissipation mechanism 7. By installing the heat dissipation mechanism 7 on the outer shell 1 and the back cover 2, when the rotor 4 drives the rotating shaft 5 to rotate, the rotating shaft 5 drives the heat dissipation mechanism 7, and the heat dissipation mechanism 7 dissipates heat in the outer shell 1. At the same time, the heat dissipation mechanism 7 drives the spoiler mechanism 8, so that the spoiler mechanism 8 further improves the heat dissipation effect of the heat dissipation mechanism 7, thereby enhancing the electrical performance and temperature resistance, maintaining good conductivity and improving wear resistance. At the same time, when the brush motor is working, the possibility of heat generated by high-load rotation accumulating in the outer shell 1 is reduced, and the possibility of high temperature affecting the normal operation of the brush motor is reduced, thereby further improving the service life of the brush motor.

[0030] Reference Figure 2 , Figure 3 and Figure 4 The heat dissipation mechanism 7 includes a heat dissipation plate 72 arranged on the back cover 2, the heat dissipation plate 72 is fixedly connected to the rotating shaft 5, the heat dissipation plate 72 is provided with evenly distributed inclined wind tunnels 74, the outer shell 1 is provided with a heat conduction component 73, and the back cover 2 and the outer shell 1 are provided with evenly distributed heat dissipation holes 71.

[0031] When the brushed motor is working, the rotor 4 drives the shaft 5 to rotate under the support of the bearing 6, and the heat generated in the housing 1 is dissipated from the heat dissipation holes 71 on the housing 1 and the rear cover 2. At the same time, the shaft 5 drives the heat dissipation plate 72, so that the heat dissipation plate 72 rotates with the shaft 5. When the heat dissipation plate 72 rotates, the inclined wind tunnel 74 on the heat dissipation plate 72 rotates with it, so that the inclined wind tunnel 74 sucks the heat dissipation holes 71 on the rear cover 2, so that the heat in the housing 1 is extracted from the heat dissipation holes 71 on the rear cover 2, and at the same time, the heat conduction component 73 is connected to the external water circulation device to transfer the heat of the housing 1. The heat of the heat conducting component 73 is then taken away by the external water circulation device, and the high heat generated by the brush motor is taken away. When the rotor 4 drives the shaft 5 to rotate, the shaft 5 drives the heat dissipation plate 72, and the inclined wind tunnel 74 on the heat dissipation plate 72 rotates, so that the heat in the housing 1 is drawn away from the heat dissipation holes 71 of the rear cover 2. At the same time, the heat conducting component 73 absorbs the heat of the housing 1, thereby efficiently dissipating the heat of the brush motor, reducing the possibility of heat accumulation in the housing 1 of the brush motor, affecting the normal operation of the brush motor, and prolonging the service life of the brush motor. Reference Figure 2 , Figure 3 and Figure 4 The heat-conducting assembly 73 includes two heat-conducting cabins 731 symmetrically fixed on the shell 1, and a water inlet pipe 732 is provided on one side of the two heat-conducting cabins 731. The water inlet pipe 732 is fixedly connected to the two heat-conducting cabins 731, and the water inlet pipe 732 is communicated with the two heat-conducting cabins 731. A water outlet pipe 733 is provided on the other side of the two heat-conducting cabins 731, and the water outlet pipe 733 is fixedly connected to the two heat-conducting cabins 731, and the water outlet pipe 733 is communicated with the two heat-conducting cabins 731.

[0032] First, the water inlet pipe 732 and the water outlet pipe 733 are connected to the external water circulation device, and the water flows into the heat conduction cabin 731 from the water inlet pipe 732, and then goes out from the water outlet pipe 733 of the heat conduction cabin 731. When the brush motor is working, the heat of the brush motor housing 1 is transferred to the heat conduction cabin 731, and the heat of the heat conduction cabin 731 is absorbed by the water in the heat conduction cabin 731. Then, the water that absorbs the heat is discharged from the heat conduction cabin 731 from the water outlet pipe 733, so as to cool the housing 1. By transferring the heat of the brush motor to the heat conduction cabin 731, and then transferring the heat in the heat conduction cabin 731 to the inflow and outflow water, the housing 1 of the brush motor can be further cooled, thereby reducing the possibility of high heat generated by the brush motor during operation.

[0033] Reference Figure 2 and Figure 3, a plurality of heat sinks 734 are arranged in the heat-conducting cabin 731, and the heat sinks 734 are fixedly connected to the heat-conducting cabin 731, and the heat sinks 734 penetrate the heat-conducting cabin 731 and extend into the shell 1. When the brushed motor is working, the heat generated by the brushed motor is transferred to the shell 1, and the shell 1 transfers the heat to the heat-conducting cabin 731, and then the heat-conducting cabin 731 transfers the heat to the heat sink 734. When the water flows through the heat-conducting cabin 731, the water is allowed to contact the heat sink 734, so as to improve the efficiency of transferring the heat to the water. At the same time, the heat sink 734 directly extends into the shell 1, and the heat in the shell 1 is directly transferred to the heat sink 734, and then the heat sink 734 transfers the heat to the water. By fixing a plurality of heat sinks 734 in the heat-conducting cabin 731, and allowing the heat sink 734 to pass through the shell 1 and enter the shell 1, the efficiency of transferring the heat in the shell 1 to the water can be improved, and the heat dissipation efficiency can be further improved.

[0034] Reference Figure 2 and Figure 3 , a plurality of heat sinks 734 are staggered. When the heat sink 734 is fixed in the heat conduction cabin 731, one end of the heat sink 734 is in contact with the inner wall of the heat conduction cabin 731, and the other end is kept away from the heat conduction cabin 731. The heat sinks 734 are alternately arranged. When water flows into the heat conduction cabin 731 from the water inlet pipe 732, the water flows through the gap between the heat sink 734 and the heat conduction cabin 731 under the obstruction of the heat sink 734, so that the water flows back and forth through the heat conduction cabin 731, and then flows out from the water outlet pipe 733. By staggering the heat sink 734 in the heat conduction cabin 731, when the water flows through the heat conduction cabin 731, under the guidance of the heat sink 734, the water flows back and forth, thereby increasing the contact area between the water flow and the heat conduction cabin 731 and improving the heat dissipation efficiency.

[0035] Reference Figure 3 , Figure 4 and Figure 5 The spoiler mechanism 8 includes a plurality of spoiler plates 82 arranged in the heat conduction cabin 731. The spoiler plates 82 are threadedly distributed. Support blocks 81 are fixed at both ends of the spoiler plates 82. The support blocks 81 are rotatably connected to the heat conduction cabin 731. A synchronization component 83 is arranged between one end of the heat conduction cabin 731 and the heat dissipation plate 72.

[0036] The rotor 4 drives the rotating shaft 5, and when the rotating shaft 5 rotates under the support of the bearing 6, the rotating shaft 5 drives the heat sink 72, and then the heat sink 72 drives the synchronous component 83, the synchronous component 83 drives a number of support blocks 81 to rotate, the support block 81 drives the spoiler 82 to rotate, and when the spoiler 82 rotates in the heat conduction cabin 731, the water flowing through is stirred, so that when the water absorbs heat from the heat conduction cabin 731, the water absorbs the heat from the heat conduction cabin 731 sufficiently and evenly, and when the heat sink 72 rotates, the heat sink 72 drives the synchronous component 83, and the synchronous component 83 drives the support block 81, and the support block 81 drives the spoiler 82 to rotate, thereby reducing the possibility of heat absorption stratification when the water flows through the heat conduction cabin 731, allowing the water to absorb heat more evenly and improving the heat absorption efficiency.

[0037] Reference Figure 3 and Figure 5 The synchronization assembly 83 includes a plurality of rotating rods 831 rotatably connected to the heat conduction cabin 731 , a gear 832 is fixed to the rotating rod 831 , and evenly distributed tooth grooves 833 are formed on the heat dissipation plate 72 , and the gear 832 meshes with the tooth grooves 833 on the heat dissipation plate 72 .

[0038] When the rotating shaft 5 drives the heat sink 72 to rotate, the tooth groove 833 on the heat sink 72 drives the gear 832, so that the gear 832 rotates under the support of the rotating rod 831, and then the gear 832 drives the rotating rod 831, so that the rotating rod 831 drives the supporting block 81, and the supporting block 81 drives the spoiler 82 to rotate. By rotating the heat sink 72, the heat sink 72 drives the gear 832, and the gear 832 drives the rotating rod 831 to rotate, so that the spoiler 82 can be easily rotated in the heat conduction cabin 731, and the spoiler 82 can stir the water flow in the heat conduction cabin 731.

[0039] Reference Figure 2 , Figure 3 and Figure 4 A protective cover 84 is fixed on the heat conduction chamber 731, and the protective cover 84 corresponds to the rotating rod 831 and the gear 832. The protective covers 84 are fixed on both heat dissipation chambers, and the protective covers 84 are covered on a plurality of rotating rods 831 and gears 832 to protect the rotating rods 831 and gears 832. By using the protective cover 84 to protect the rotating rods 831 and gears 832, the possibility of the normal rotation of the gears 832 and the rotating rods 831 being affected by foreign factors can be reduced.

[0040] Working principle: When producing the brushed motor, the rotor 4 core is made of high-quality cold-rolled silicon steel sheets, which ensures the magnetic permeability while reducing the weight. The stator 3 winding adopts high-strength insulating enameled wire to enhance the electrical performance and temperature resistance. The carbon brush 10 adopts a graphite copper composite material, which not only maintains good conductivity but also improves wear resistance. The rear end 2 cover and the motor housing are preferably made of aluminum alloy, which is light and strong, and has good heat dissipation performance. Then the corresponding housing 1, rear cover 2, stator 3, steering gear, bearing 6, shaft 5 and rotor 4 are assembled. When the brushed motor is used, the stator The winding 3 is energized, and the magnetic field generated interacts with the magnetic field generated by the rotor 4 to form a driving torque to rotate the rotor 4. The cooperation of the commutator 9 and the carbon brush 10 realizes the continuous conversion of the current, so that the motor can continue to work at different phases. When the rotor 4 drives the shaft 5 to rotate on the bearing 6, the shaft 5 drives the heat sink 72, so that the heat sink 72 rotates with the shaft 5. When the heat sink 72 rotates, the inclined wind tunnel 74 on the heat sink 72 rotates with it, so that the inclined wind tunnel 74 generates suction to the heat dissipation hole 71 on the rear cover 2, so that the heat in the housing 1 is extracted from the heat dissipation hole 71 on the rear cover 2.

[0041] At the same time, the water inlet pipe 732 and the water outlet pipe 733 are connected to the external water circulation device, so that the water flows into the heat conduction cabin 731 from the water inlet pipe 732, and then flows out from the water outlet pipe 733 of the heat conduction cabin 731. When the brush motor is working, the heat of the brush motor housing 1 is transferred to the heat conduction cabin 731, and the heat of the heat conduction cabin 731 is absorbed by the water in the heat conduction cabin 731. Then, the water that absorbs the heat is discharged from the heat conduction cabin 731 from the water outlet pipe 733, thereby cooling the housing 1. When the heat sink 72 rotates, the tooth groove 833 on the heat sink 72 drives the gear 832, and the gear 832 rotates under the support of the rotating rod 831, and then the gear 832 drives the rotating rod 831, and the rotating rod 831 drives the support block 81, and the support block 81 drives the spoiler 82 to rotate, so as to stir the flowing water, so that when the water absorbs heat from the heat conduction cabin 731, the water can fully and evenly absorb the heat on the heat conduction cabin 731, so as to cool the brushed motor.

Claims

1. A wear-resistant, high-load small brushed motor, comprising a housing (1), characterized in that: A rear cover (2) is fixed on the outer shell (1), bearings (6) are fixed on both the outer shell (1) and the rear cover (2), a rotating shaft (5) is rotatably connected between the two bearings (6), a rotor (4) is fixed on the rotating shaft (5), a stator (3) is fixed inside the outer shell (1), a heat dissipation mechanism (7) is provided on the rear cover (2), a spoiler mechanism (8) is provided on the outer shell (1), a commutator (9) is fixed on the rotating shaft (5), and two symmetrical carbon brushes (10) are fixed on the rear cover (2).

2. The wear-resistant, high-load small brush motor according to claim 1, characterized in that: The heat dissipation mechanism (7) comprises a heat dissipation plate (72) arranged on the rear cover (2), the heat dissipation plate (72) being fixedly connected to the rotating shaft (5), the heat dissipation plate (72) being provided with evenly distributed inclined wind tunnels (74), the outer shell (1) being provided with a heat conduction component (73), and the rear cover (2) and the outer shell (1) being provided with evenly distributed heat dissipation holes (71).

3. The wear-resistant high-load small brush motor according to claim 2 is characterized in that: The heat conduction assembly (73) comprises two heat conduction chambers (731) symmetrically fixed on the outer shell (1); a water inlet pipe (732) is provided on one side of the two heat conduction chambers (731); the water inlet pipe (732) is fixedly connected to the two heat conduction chambers (731); the water inlet pipe (732) is communicated with the two heat conduction chambers (731); a water outlet pipe (733) is provided on the other side of the two heat conduction chambers (731); the water outlet pipe (733) is fixedly connected to the two heat conduction chambers (731); the water outlet pipe (733) is communicated with the two heat conduction chambers (731).

4. The wear-resistant high-load small brush motor according to claim 3 is characterized in that: A plurality of heat dissipation plates (734) are arranged in the heat conduction chamber (731); the heat dissipation plates (734) are fixedly connected to the heat conduction chamber (731); the heat dissipation plates (734) penetrate the heat conduction chamber (731) and extend into the outer shell (1).

5. The wear-resistant and high-load small brush motor according to claim 3 is characterized in that: A plurality of the heat dissipation plates (734) are distributed in a staggered manner.

6. The wear-resistant high-load small brush motor according to claim 3, characterized in that: The spoiler mechanism (8) comprises a plurality of spoilers (82) arranged in the heat conduction cabin (731), the spoilers (82) being arranged in a threaded manner, support blocks (81) being fixed at both ends of the spoiler (82), the support blocks (81) being rotatably connected to the heat conduction cabin (731), and a synchronization component (83) being arranged between one end of the heat conduction cabin (731) and the heat dissipation plate (72).

7. The wear-resistant, high-load small brush motor according to claim 6, characterized in that: The synchronization component (83) comprises a plurality of rotating rods (831) rotatably connected to the heat conducting cabin (731), a gear (832) being fixed to the rotating rod (831), and evenly distributed tooth grooves (833) are provided on the heat dissipation plate (72), and the gear (832) meshes with the tooth grooves (833) on the heat dissipation plate (72).

8. The wear-resistant high-load small brush motor according to claim 7, characterized in that: A protective cover (84) is fixed on the heat conduction chamber (731), and the protective cover (84) corresponds to the rotating rod (831) and the gear (832).

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