Cooling mechanism and brushless motor thereof

Abstract

The invention discloses a cooling mechanism and a brushless motor thereof, and relates to the technical field of brushless motors. A double-shaft-extension motor is arranged in the air guide barrel, cooling fan blades are arranged at the first end of an output shaft of the double-shaft-extension motor, a speed reducer is arranged at one end of the double-shaft-extension motor, the second end of the output shaft of the double-shaft-extension motor is fixedly connected with the output end of the speed reducer, a transmission shaft is arranged at the output end of the speed reducer, and a filter plate is arranged in the air guide barrel. The brushless motor body is fixed in the air guide cylinder, the heat dissipation protrusions on the brushless motor body are fixed to the inner wall of the air guide cylinder, the first end of the output shaft of the double-shaft extension motor drives the heat dissipation fan blades to rotate, the heat dissipation fan blades drive air to enter the air guide cylinder from the opening in one end of the air guide cylinder, and the air is blown to the brushless motor body after being filtered by the filter plate. And the air flows through the plurality of heat dissipation bulges between the outer side of the brushless motor body and the inner wall of the air duct and is discharged from the opening at the other end of the air duct, so that the heat dissipation efficiency of the brushless motor body is improved.

Description

Technical Field

[0001] The present invention belongs to the field of brushless motors, and in particular relates to a cooling mechanism and a brushless motor thereof. Background Art

[0002] The brushless DC motor consists of an electric motor and a driver, and is a typical mechatronics product.

[0003] Patent publication number CN108429412A discloses a brushless DC motor, including a motor body, a power connection line, a rotating shaft, an electromagnet N pole, a stator, a rotor, an electromagnet S pole, a motor speed regulator, an adjustment knob, a switch and a heat dissipation hole. The front end of the motor body is provided with a rotating shaft, the rear end of the motor body is provided with a power connection line and a heat dissipation hole, the motor body is provided with a stator, the stator is mounted with mutually symmetrical electromagnet N poles and electromagnet S poles, the motor body is provided with a rotor, the motor body is peripherally mounted with a motor speed regulator, the motor speed regulator is provided with an adjustment knob, and the lower end of the adjustment knob is provided with a switch. The motor body of this brushless DC motor is made of a striped copper-nickel alloy, which can make the magnetic field move along the stripe direction under a high external magnetic field to avoid affecting the normal operation of the motor. The newly added temperature sensor can detect the temperature inside the motor to prevent excessive temperature from affecting the normal operation of the motor.

[0004] Based on the above search and combined with the existing technology, it is found that the existing brushless motors usually add strip-shaped protrusions on the outside of the brushless motor housing to increase the surface area of ​​the housing, increase the heat dissipation effect of the brushless motor housing, and thus increase the heat dissipation effect of the brushless motor. The brushless motor will generate more heat when working, and the heat is naturally dissipated through the brushless motor housing. The heat dissipation effect is slow, which can easily cause the temperature inside the brushless motor housing to be too high, affecting the operation of the brushless motor.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a cooling mechanism and a brushless motor thereof.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] A cooling mechanism includes an air duct, a double-shaft motor is provided in the air duct, a heat dissipation fan blade is provided at the first end of the double-shaft motor output shaft, a reducer is provided at one end of the double-shaft motor, the second end of the double-shaft motor output shaft is fixedly connected to the output end of the reducer, a transmission shaft is provided at the output end of the reducer, a filter plate is provided in the air duct, and a cleaning piece corresponding to the filter plate is provided on the transmission shaft.

[0009] Optionally, a through hole is provided at the center of one side of the filter plate, and the filter plate is slidably sleeved on the transmission shaft through the through hole.

[0010] Optionally, a plurality of notches are provided on one side of the air guide tube, and a limiting protrusion corresponding to the notches is provided on the side of the filter plate, and the limiting protrusion is located in the notch.

[0011] Optionally, the inner wall thread of the air guide tube is matched with an external thread ring for fixing the filter plate, and the inner wall diameter of the external thread ring gradually decreases from an end close to the filter plate to an end away from the filter plate.

[0012] Optionally, a base is provided under the air guide tube, a raised portion is provided on the upper side of the base, an arc-shaped notch is provided on the upper side of the raised portion, the air guide tube is fixed in the arc-shaped notch, a slot is provided on the bottom surface of the base, a plurality of mounting handle screws are rotatably engaged on the upper side of the base, a smooth curved surface is provided on the outer side of the upper part of the mounting handle screw, a sprocket is provided on the fixed sleeve of the upper part of the mounting handle screw extending into the slot, a chain is provided between the multiple sprockets, a first bearing corresponding to the mounting handle screw is embedded in the upper side of the base, and the upper part of the mounting handle screw is fixed in the first bearing.

[0013] Optionally, the cleaning part includes a mounting seat fixedly mounted on the transmission shaft, a brush plate member slidingly engaged with the mounting seat, an adjusting handle bolt rotatably engaged with one side of the brush plate member and threadedly engaged with the mounting seat, a limiting recess is provided on one side of the transmission shaft, the mounting seat includes a circular ring mounted on the transmission shaft, a limiting strip provided in the circular ring, and a plurality of connecting strips in a circular array on the circular ring, a sliding groove is provided on one side of the circular ring, the brush plate member is located in the sliding groove, the limiting strip is located in the limiting recess, and the adjusting handle bolt is threadedly engaged with the limiting strip.

[0014] Optionally, a positioning handle bolt is threadedly fitted on one side of the ring, a positioning groove is provided on one side of the transmission shaft, and one end of the positioning handle bolt is located in the positioning groove.

[0015] Optionally, the brush plate member includes a connecting ring that slides in the slide groove, a connecting strip fixed in the connecting ring, and a plurality of brush plates arranged in a circular array on the connecting ring, and the adjusting handle bolt is rotationally fitted on one side of the connecting strip.

[0016] Optionally, the slide groove includes an annular groove provided on one side of the circular ring, a connecting groove provided on one side of the limiting strip, and multiple extension grooves provided on one side of the connecting strip. The multiple extension grooves correspond one-to-one to the multiple brush plates. The annular groove is connected to the connecting groove and the extension groove. The connecting ring is located in the annular groove, the connecting strip is located in the connecting groove, and the brush plate is located in the extension groove.

[0017] A brushless motor uses any one of the above cooling mechanisms, including a brushless motor body, a plurality of heat dissipation protrusions arranged in a circumferential array on the outer side of the brushless motor body, and the plurality of heat dissipation protrusions are fixed in an air guide tube.

[0018] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0019] By fixing the brushless motor body in the air guide tube and the heat dissipation protrusions on the brushless motor body are fixed on the inner wall of the air guide tube, the first end of the double-axis motor output shaft drives the heat dissipation fan blades to rotate, and the heat dissipation fan blades drive air to enter the air guide tube from the opening at one end of the air guide tube, and after being filtered by the filter plate, blown to the brushless motor body, and flow through the multiple heat dissipation protrusions between the outer side of the brushless motor body and the inner wall of the air guide tube, and discharged from the opening at the other end of the air guide tube, thereby improving the heat dissipation efficiency of the brushless motor body. The second end of the double-axis motor output shaft drives the transmission shaft to rotate slowly through the reducer, and the transmission shaft drives the cleaning part to rotate, sweeping the dust filtered by the filter plate, facilitating automatic cleaning of the filter plate, and allowing the filter plate to continuously filter the air. By setting the reducer, it is convenient to make the cleaning part and the heat dissipation fan blades rotate at a differential speed, so that the cleaning part rotates slowly when the heat dissipation fan blades rotate at high speed to dissipate heat, thereby reducing the wear efficiency of the cleaning part and increasing the service life of the cleaning part.

[0020] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0022] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present invention;

[0023] Figure 2 is a schematic cross-sectional structural diagram of an embodiment of the present invention;

[0024] Figure 3 A bottom view schematic diagram of the structure of an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the filter plate structure according to one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the transmission shaft structure according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic structural diagram of a brush plate according to an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the mounting base structure according to one embodiment of the present invention;

[0029] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0030] Air guide duct 1, double-axis extension motor 2, cooling fan blades 3, reducer 4, transmission shaft 5, limiting recess 501, positioning groove 502, filter plate 6, cleaning part 7, mounting seat 701, circular ring 7011, limiting strip 7012, connecting strip 7013, slide groove 7014, annular groove 70141, connecting groove 70142, extension groove 70143, positioning handle bolt 7015, brush plate part 702, connecting ring 7021, connecting strip 7022, brush plate 7023, adjusting handle bolt 703, through hole 8, notch 9, limiting protrusion 10, external thread ring 11, base 12, protrusion 13, arc-shaped notch 14, notch 15, mounting handle screw 16, sprocket 17, chain 18.

[0031] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] The present invention will now be described in further detail with reference to the accompanying drawings.

[0033] See also Figure 1-7 As shown, in this embodiment, a cooling mechanism is provided, including an air guide tube 1, a double-axis motor 2 is provided in the air guide tube 1, a heat dissipation fan blade 3 is provided at the first end of the output shaft of the double-axis motor 2, and a plurality of connecting rods are provided between the side of the double-axis motor 2 and the inner wall of the air guide tube 1 to facilitate the fixation of the double-axis motor 2 in the air guide tube 1, a reducer 4 is provided at one end of the double-axis motor 2, the second end of the output shaft of the double-axis motor 2 is fixedly connected to the output end of the reducer 4, the output end of the reducer 4 is provided with a transmission shaft 5, a filter plate 6 is provided in the air guide tube 1, and a cleaning part 7 corresponding to the filter plate 6 is provided on the transmission shaft 5.

[0034] By fixing the brushless motor body in the air guide tube 1 and the heat dissipation protrusion on the brushless motor body being fixed on the inner wall of the air guide tube 1, the first end of the output shaft of the double-axis extension motor 2 drives the heat dissipation fan blades 3 to rotate, and the heat dissipation fan blades 3 drive the air to enter the air guide tube 1 from the opening at one end of the air guide tube 1, and after being filtered by the filter plate 6, blown to the brushless motor body, and flow through the multiple heat dissipation protrusions between the outer side of the brushless motor body and the inner wall of the air guide tube 1, and be discharged from the opening at the other end of the air guide tube 1, thereby improving the heat dissipation efficiency of the brushless motor body. The second end of the output shaft of the double-axis extension motor 2 drives the transmission shaft 5 to rotate slowly through the reducer 4, and the transmission shaft 5 drives the cleaning part 7 to rotate, sweeping the dust filtered by the filter plate 6, facilitating automatic cleaning of the filter plate 6, so that the filter plate 6 continuously filters the air. By setting the reducer 4, it is convenient to make the cleaning part 7 and the heat dissipation fan blades 3 rotate at a differential speed, so that when the heat dissipation fan blades 3 rotate at high speed to dissipate heat, the cleaning part 7 rotates slowly, reducing the wear efficiency of the cleaning part 7 and improving the service life of the cleaning part 7.

[0035] For stable installation and quick removal of filter plate 6, please refer to Figure 2-4 As shown, a through hole 8 is provided at the center of one side of the filter plate 6 of this embodiment, and the filter plate 6 is slidably sleeved on the transmission shaft 5 through the through hole 8. A plurality of notches 9 are provided on one side of the air guide tube 1, and a limiting protrusion 10 corresponding to the notch 9 is provided on the side of the filter plate 6. The limiting protrusion 10 is located in the notch 9. The inner wall thread of the air guide tube 1 is matched with an external threaded ring 11 for fixing the filter plate 6. The inner wall diameter of the external threaded ring 11 gradually decreases from the end close to the filter plate 6 to the end away from the filter plate 6, so that the dust on the filter plate 6 falls on the external threaded ring 11 and then is discharged from the device through the notch 9, so that the filter plate 6 is sleeved on the transmission shaft 5 through the through hole 8 and makes The limiting protrusion 10 slides into the notch 9, making it convenient to limit the sliding position of the limiting protrusion 10 through the notch 9, thereby limiting the installation position of the filter plate 6 and preventing the filter plate 6 from rotating, thereby improving the stability of the installation of the filter plate 6. The filter plate 6 is limited to slide along its axial direction through the external threaded ring 11, and then the filter plate 6 is positioned through the external threaded ring 11. When the filter plate 6 needs to be replaced, after disassembling the cleaning part 7, the external threaded ring 11 is rotated to rotate the external threaded ring 11 out of the air guide tube 1, and the limitation of the external threaded ring 11 on the filter plate 6 is released. The filter plate 6 is pulled out of the air guide tube 1 through the limiting protrusion 10, and the filter plate 6 can be quickly removed and replaced quickly.

[0036] To improve the installation efficiency of the air duct 1, please refer to Figure 1-3 As shown, a base 12 is provided below the air guide tube 1 of this embodiment, a raised portion 13 is provided on the upper side of the base 12, an arc-shaped notch 14 is provided on the upper side of the raised portion 13, and the air guide tube 1 is fixed in the arc-shaped notch 14. A notch 15 is provided on the bottom surface of the base 12, and a plurality of mounting handle screws 16 are rotatably matched on the upper side of the base 12. A smooth curved surface is provided on the outer side of the upper portion of the mounting handle screw 16. The upper portion of the mounting handle screw 16 extends into the notch 15 and is fixedly sleeved with a sprocket 17. A chain 18 is sleeved between the plurality of sprockets 17. A first shaft corresponding to the mounting handle screw 16 is embedded on the upper side of the base 12. The upper part of the mounting handle screw 16 is fixed in the first bearing, so that the air guide tube 1 is supported by the raised portion 13 on the base 12. The contact area between the raised portion 13 and the air guide tube 1 is increased by the arc-shaped notch 14, thereby improving the stability of the support for the air guide tube 1. The base 12 is moved to the installation position, and any one of the mounting handle screws 16 is rotated. The chain 18 cooperates with multiple sprockets 17 to drive multiple mounting handle screws 16 to rotate synchronously, so that multiple mounting handle screws 16 are screwed into the installation position at the same time, thereby improving the installation efficiency of the base 12 and the installation efficiency of the cooling mechanism.

[0037] In order to increase the service life of the cleaning piece 7 and improve the convenience of replacing the cleaning piece 7, please refer to Figure 2-7As shown, the cleaning member 7 of this embodiment includes a mounting seat 701 fixedly mounted on the transmission shaft 5, a brush plate member 702 slidingly engaged with the mounting seat 701, an adjusting handle bolt 703 rotatably engaged on one side of the brush plate member 702 and threadedly engaged with the mounting seat 701, a limiting recess 501 is provided on one side of the transmission shaft 5, the mounting seat 701 includes a circular ring 7011 mounted on the transmission shaft 5, a limiting strip 7012 provided in the circular ring 7011, and a plurality of connecting strips 7013 arranged in a circular array on the circular ring 7011, a sliding groove 7014 is provided on one side of the circular ring 7011, the limiting strip 7012 and the connecting strip 7013, the brush plate member 702 is located in the sliding groove 7014, the limiting strip 7012 is located in the limiting recess 501, and by setting the limiting strip 7012 The cam 7022 is located in the upper and lower ends of the drive shaft 5, and the cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5. The cam 7023 is provided with a plurality of brush plates 7023 on the upper and lower ends of the drive shaft 5 The ring 7021 slides, and then drives multiple brush plates 7023 to slide simultaneously through the connecting ring 7021, thereby improving the convenience of adjusting the simultaneous sliding of multiple brush plates 7023. A second bearing is embedded in one side of the connecting bar 7022, and a smooth curved surface is provided on the outer side of one end of the adjusting handle bolt 703. One end of the adjusting handle bolt 703 is fixed in the second bearing, thereby improving the stability of the rotation of the adjusting handle bolt 703 and improving the stability of the sliding of the connecting bar 7022 driven by the threaded cooperation between the adjusting handle bolt 703 and the limiting bar 7012. The sliding groove 7014 includes an annular groove 70141 provided on one side of the ring 7011, a connecting groove 70142 provided on one side of the limiting bar 7012, and a plurality of extension grooves 70143 provided on one side of the connecting bar 7013. 143 corresponds to a plurality of brush plates 7023 one by one, the annular groove 70141 is connected to the connecting groove 70142 and the extension groove 70143, the connecting ring 7021 is located in the annular groove 70141, the connecting strip 7022 is located in the connecting groove 70142, and the brush plate 7023 is located in the extension groove 70143, so as to facilitate guiding the connecting ring 7021 to slide through the annular groove 70141, thereby improving the sliding stability of the connecting ring 7021, guiding the sliding stability of the connecting strip 7022 through the connecting groove 70142, and guiding the brush plate 7023 to slide through the extension groove 70143, thereby improving the sliding stability of the brush plate 7023, and then guiding the brush plate member 702 to slide through the sliding groove 7014, thereby improving the sliding stability of the brush plate member 702 in the mounting seat 701.When the bristles on the brush plate 7023 in the cleaning member 7 are worn, the dual-axis extension motor 2 is turned off and the adjustment handle bolt 703 is rotated. The adjustment handle bolt 703 is threadedly engaged with the mounting seat 701, driving the brush plate member 702 to slide in the slide groove 7014 toward the filter plate 6, so that the bristles continue to contact the filter plate 6, allowing the brush plate member 702 to continue cleaning the filter plate 6, thereby increasing the service life of the cleaning member 7. When the cleaning member 7 needs to be replaced, the positioning handle bolt 7015 is rotated to screw one end of the positioning handle bolt 7015 out of the positioning groove 502, releasing the limit of the cleaning member 7 on the transmission shaft 5, and the cleaning member 7 can be quickly disassembled and replaced.

[0038] A brushless motor uses any one of the above cooling mechanisms, including a brushless motor body, a plurality of heat dissipation protrusions arranged in a circumferential array on the outer side of the brushless motor body, and the plurality of heat dissipation protrusions are fixed in an air guide tube 1.

[0039] Working principle: Fix the brushless motor body in the air duct 1, and the heat dissipation protrusion on the brushless motor body is fixed on the inner wall of the air duct 1, turn on the first end of the output shaft of the double-axis motor 2 to drive the heat dissipation fan blade 3 to rotate, and the heat dissipation fan blade 3 drives the air to enter the air duct 1 from the opening at one end of the air duct 1, and after being filtered by the filter plate 6, it blows toward the brushless motor body, flows between the multiple heat dissipation protrusions between the outer side of the brushless motor body and the inner wall of the air duct 1, and is discharged from the opening at the other end of the air duct 1, thereby improving the heat dissipation efficiency of the brushless motor body. The second end drives the transmission shaft 5 to rotate slowly through the reducer 4, and the transmission shaft 5 drives the cleaning member 7 to rotate, which drives the mounting seat 701 and the brush plate member 702 to rotate. The brush plate 7023 in the brush plate member 702 cleans the dust filtered by the filter plate 6, which is convenient for automatically cleaning the filter plate 6, so that the filter plate 6 continues to filter the air. By setting the reducer 4, it is convenient to make the cleaning member 7 and the heat dissipation fan blade 3 rotate at a differential speed. When the heat dissipation fan blade 3 rotates at a high speed to dissipate heat, the cleaning member 7 rotates at a slow speed, thereby reducing the wear efficiency of the cleaning member 7 and increasing the service life of the cleaning member 7.

[0040] When the bristles on the brush plate 7023 in the cleaning member 7 are worn, the double-axis extension motor 2 is turned off, the adjusting handle bolt 703 is rotated, and the adjusting handle bolt 703 is threadedly engaged with the mounting seat 701, driving the brush plate member 702 to slide toward the filter plate 6 in the slide groove 7014, so that the bristles continue to contact the filter plate 6, so that the brush plate member 702 can continue to clean the filter plate 6, thereby improving the service life of the cleaning member 7;

[0041] When the cleaning member 7 needs to be replaced, the positioning handle bolt 7015 is rotated to screw one end of the positioning handle bolt 7015 out of the positioning groove 502, thereby releasing the limit of the cleaning member 7 on the transmission shaft 5, and the cleaning member 7 can be quickly disassembled and replaced.

[0042] When the filter plate 6 needs to be replaced, after removing the cleaning part 7, rotate the external threaded ring 11, turn the external threaded ring 11 out of the air guide tube 1, release the limit of the external threaded ring 11 on the filter plate 6, and pull the filter plate 6 out of the air guide tube 1 through the limiting protrusion 10. The filter plate 6 can be quickly removed and replaced.

[0043] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. All electrical appliances in the present invention are powered by an external power supply or a built-in battery. All electrical appliances in the present invention are not restricted by model and specific type. Those skilled in the art can clearly use the applicable electrical appliance model and specific type and electrical power supply method based on common sense in the field.

[0044] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention, which have the same or similar technical solutions as the present invention, should be understood to fall within the scope of protection of the present invention. The technologies, shapes, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A cooling mechanism, characterized in that: include: An air guide tube (1) is provided with a double-shaft extension motor (2) in the air guide tube (1), a heat dissipation fan blade (3) is provided at the first end of the output shaft of the double-shaft extension motor (2), a reducer (4) is provided at one end of the double-shaft extension motor (2), a second end of the output shaft of the double-shaft extension motor (2) is fixedly connected to the output end of the reducer (4), a transmission shaft (5) is provided at the output end of the reducer (4), a filter plate (6) is provided in the air guide tube (1), and a cleaning member (7) corresponding to the filter plate (6) is provided on the transmission shaft (5).

2. A cooling mechanism according to claim 1, characterized in that: A through hole (8) is provided at the center of one side of the filter plate (6), and the filter plate (6) is slidably sleeved on the transmission shaft (5) through the through hole (8).

3. A cooling mechanism according to claim 1, characterized in that: A plurality of notches (9) are provided on one side of the air guide tube (1), and a limiting protrusion (10) corresponding to the notch (9) is provided on the side of the filter plate (6), and the limiting protrusion (10) is located in the notch (9).

4. A cooling mechanism according to claim 3, characterized in that: The inner wall thread of the air guide tube (1) is matched with an outer thread ring (11) for fixing the filter plate (6), and the inner wall diameter of the outer thread ring (11) gradually decreases from an end close to the filter plate (6) to an end away from the filter plate (6).

5. A cooling mechanism according to claim 1, characterized in that: A base (12) is provided below the air guide tube (1), a raised portion (13) is provided on the upper side of the base (12), an arc-shaped notch (14) is provided on the upper side of the raised portion (13), the air guide tube (1) is fixed in the arc-shaped notch (14), a notch (15) is provided on the bottom surface of the base (12), a plurality of mounting handle screws (16) are rotatably matched on the upper side of the base (12), a smooth curved surface is provided on the outer side of the upper part of the mounting handle screw (16), a sprocket (17) is fixedly sleeved on the upper part of the mounting handle screw (16) extending into the notch (15), a chain (18) is sleeved between the plurality of sprockets (17), a first bearing corresponding to the mounting handle screw (16) is embedded on the upper side of the base (12), and the upper part of the mounting handle screw (16) is fixed in the first bearing.

6. A cooling mechanism according to claim 5, characterized in that: The cleaning member (7) comprises a mounting seat (701) fixedly sleeved on the transmission shaft (5), a brush plate member (702) slidably fitted on the mounting seat (701), and an adjusting handle bolt (703) rotatably fitted on one side of the brush plate member (702) and threadedly fitted with the mounting seat (701). A limiting notch (501) is provided on one side of the transmission shaft (5). The mounting seat (701) comprises a circular ring (7011) sleeved on the transmission shaft (5), and a brush plate member (702) provided on the circular ring (701). 11), a plurality of connecting strips (7013) in a circular array on the circular ring (7011), a sliding groove (7014) is provided on one side of the circular ring (7011), the limiting strip (7012), and the connecting strip (7013), the brush plate (702) is located in the sliding groove (7014), the limiting strip (7012) is located in the limiting recess (501), and the adjusting handle bolt (703) is threadedly matched with the limiting strip (7012).

7. A cooling mechanism according to claim 6, characterized in that: A positioning handle bolt (7015) is threadedly engaged on one side of the circular ring (7011), a positioning groove (502) is provided on one side of the transmission shaft (5), and one end of the positioning handle bolt (7015) is located in the positioning groove (502).

8. A cooling mechanism according to claim 7, characterized in that: The brush plate member (702) comprises a connecting ring (7021) slidingly fitted in the slide groove (7014), a connecting strip (7022) fixed in the connecting ring (7021), and a plurality of brush plates (7023) arranged in a circular array on the connecting ring (7021); the adjusting handle bolt (703) is rotatably fitted on one side of the connecting strip (7022).

9. A cooling mechanism according to claim 8, characterized in that: The slide groove (7014) comprises an annular groove (70141) provided on one side of the circular ring (7011), a connecting groove (70142) provided on one side of the limiting strip (7012), and a plurality of extension grooves (70143) provided on one side of the connecting strip (7013); the plurality of extension grooves (70143) correspond to a plurality of brush plates (7023) in a one-to-one manner; the annular groove (70141) is connected to the connecting groove (70142) and the extension groove (70143); the connecting ring (7021) is located in the annular groove (70141); the connecting strip (7022) is located in the connecting groove (70142); and the brush plate (7023) is located in the extension groove (70143).

10. A brushless motor, characterized in that: Use a cooling and temperature reduction mechanism as described in any one of claims 1 to 9 above.

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