A brushless motor

Abstract

The application relates to a brushless motor, which comprises a shell, a motor arranged in the shell, a fan, a frame body, a first cleaning mechanism, a second cleaning mechanism and a transmission mechanism, wherein the fan comprises a cover fixedly connected with the shell and provided with a filter screen for blocking dust; the frame body is fixedly connected with the cover; the first cleaning mechanism is arranged on the frame body and capable of cleaning the shell; the second cleaning mechanism is arranged on the frame body and capable of cleaning the filter screen; and the transmission mechanism is arranged on the frame body and connected with the motor output shaft and capable of driving the first cleaning mechanism or the second cleaning mechanism to work. The application has the advantages that the transmission mechanism, the first cleaning mechanism and the second cleaning mechanism are arranged, one set of transmission mechanism can be used to control the first cleaning mechanism to clean the shell and control the second cleaning mechanism to clean the filter screen.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric machines, in particular to a brushless electric machine. BACKGROUND

[0002] The brushless electric machine is a kind of electric machine without brush and commutator (or collector ring), which realizes operation by changing the frequency and waveform of the current wave passing through the armature winding coil. The brushless electric machine has the advantages of high efficiency, low energy consumption, low noise, super long service life, high reliability, relatively low cost, etc., and is widely used due to its servo control and stepless frequency conversion. The existing brushless electric machine generates a large amount of heat during long-time operation, which causes the temperature of the electric machine to rise. Therefore, some brushless electric machines need to be configured with a cooling system to work together. Due to the harsh working environment of the brushless electric machine, the filter screen of the cooling system is often covered with dust, which will cause the filter screen to be blocked after a long time, resulting in a decrease in the cooling function of the cooling system, thereby affecting the cooling effect. At the same time, due to the factors of harsh environment, a large amount of oil stains and dust will adhere to the shell of the brushless electric machine, forming a thick layer of dirt, so that the brushless electric machine cannot be cooled normally, thereby affecting the service life of the electric machine. SUMMARY

[0003] Therefore, it is necessary to provide a brushless electric machine aiming at the above problems.

[0004] The present application discloses a brushless electric machine, which comprises a shell, a fan, a frame body, a first cleaning mechanism, a second cleaning mechanism and a transmission mechanism.

[0005] In one of the embodiments, the transmission mechanism comprises a linkage shaft, a worm, a worm wheel, a first chain wheel, a second chain wheel, a chain and a push block, the linkage shaft is arranged on the frame and fixedly connected with the motor output shaft, the worm is coaxially fixedly connected with the linkage shaft, the worm wheel is engaged with the worm, the second chain wheel and the first chain wheel are arranged on the frame, the second chain wheel is coaxially arranged with the worm wheel and connected with the first chain wheel through the chain, the push block is fixedly arranged on the chain, the rotation of the motor can drive the linkage shaft to rotate, thereby driving the worm wheel and the worm to rotate, and further driving the second chain wheel to rotate, the rotation of the second chain wheel can drive the chain to rotate, and simultaneously drive the first chain wheel to rotate in cooperation, the rotation of the chain can drive the push block to rotate, when the push block moves to the right side of the first chain wheel, the push block can drive the first cleaning mechanism to move, when the push block moves to the left side of the first chain wheel with the chain, the push block can drive the second cleaning mechanism to move.

[0006] In one of the embodiments, the first cleaning mechanism comprises a sliding plate, a first spring, a first swing rod and a second swing rod, the first swing rod and the second swing rod are rotationally arranged with the linkage shaft, the first swing rod is provided with a first protrusion, the second swing rod is provided with a second protrusion, the sliding plate is slidingly arranged on the frame, the first spring abuts against the frame and the sliding plate at the same time, the lower end of the sliding plate is provided with a control rod, and the upper end of the sliding plate is provided with a first straight slot and a second straight slot, the first protrusion is slidingly arranged in the first straight slot, and the second protrusion is slidingly arranged in the second straight slot, when the push block is on the right side of the first chain wheel, the control rod can abut against the push block, and the downward movement of the push block can drive the control rod to move downward, thereby driving the sliding plate to move downward against the first spring, and further driving the first protrusion and the second protrusion to slide in the first straight slot and the second straight slot, and further driving the first swing rod and the second swing rod to rotate about the linkage shaft, when the push block moves away from the control rod, the sliding plate can drive the first swing rod and the second swing rod to reversely rotate under the action of the first spring.

[0007] In one of the embodiments, the first cleaning mechanism further comprises a first transmission shaft, a first scraper block, a second transmission shaft and a second scraper block, an annular groove is formed on the shell, one end of the first transmission shaft is fixedly connected with the first swing rod, the other end of the first transmission shaft is fixedly connected with the first scraper block, one end of the second transmission shaft is fixedly connected with the second swing rod, the other end of the second transmission shaft is fixedly connected with the second scraper block, and the first scraper block and the second scraper block are slidingly arranged in the annular groove, the first swing rod and the second swing rod can drive the first transmission shaft and the second transmission shaft to rotate, so as to drive the first scraper block and the second scraper block to slide along the annular groove.

[0008] In one of the embodiments, the first cleaning mechanism further comprises a first soft brush, a first scraper, a second soft brush and a second scraper, the first soft brush, the first scraper, the second soft brush and the second scraper are arranged on the shell, and the first soft brush and the first scraper are fixedly connected with the first scraper block, and the second soft brush and the second scraper are fixedly connected with the second scraper block.

[0009] In one of the embodiments, the second cleaning mechanism comprises a rack, a second spring and a gear, the gear is rotationally arranged on the linkage shaft, the rack is slidingly arranged on the frame body and engaged with the gear, the second spring abuts against the frame body and the rack, when the toggle block moves to the left side of the first chain wheel, the toggle block can abut against the rack, upward movement of the toggle block can push the rack to move upward against the second spring, when the toggle block moves upward to disengage from the rack, the rack can move downward under the action of the second spring, so as to drive the gear to rotate reversely.

[0010] In one of the embodiments, the second cleaning mechanism further comprises a soft brush handle and a third soft brush, the third soft brush is arranged on the filter screen and fixed with the soft brush handle, and the soft brush handle is fixed with the gear.

[0011] In one of the embodiments, the fan comprises a fan blade, the fan blade is arranged in the outer cover and fixedly connected with the motor output shaft.

[0012] The present application has the following advantages:

[0013] 1. By arranging the transmission mechanism, the first cleaning mechanism and the second cleaning mechanism, one set of transmission mechanism can be used to control the first cleaning mechanism to clean the shell and control the second cleaning mechanism to clean the filter screen;

[0014] 2. By setting the first scraper, the second scraper, the first soft brush and the second soft brush in the first cleaning mechanism to slide around the motor shell, the oil stains on the shell can be scraped off, and the surface of the brushless motor is cleaned, so that the brushless motor can be normally cooled;

[0015] 3. By setting the third soft brush in the second cleaning mechanism, the dust on the filter screen is swept off by controlling the rotation of the third soft brush, and the filter screen is cleaned, so that the cooling system can work normally;

[0016] 4. By setting the chain and the chain wheel in the transmission mechanism, and setting the pushing block on the chain, the worm gear structure is used to control the rotation of the worm gear and the worm wheel when the motor rotates, and the chain wheel is driven to rotate, thereby driving the pushing block to move, when the pushing block contacts the first cleaning mechanism, the first cleaning mechanism can be driven to move, thereby driving the first scraper, the second scraper, the first soft brush and the second soft brush to move, when the pushing block contacts the second cleaning mechanism, the second cleaning mechanism can be driven to move and the third soft brush can clean the filter screen, thereby realizing the alternate cleaning of the motor shell and the filter screen;

[0017] 5. By setting the first spring in the first cleaning mechanism to cooperate with the sliding plate, when the pushing block is separated from the first cleaning mechanism, the first scraper, the second scraper, the first soft brush and the second soft brush can be driven to rotate due to the action of the first spring, and the dirt on the shell can be scraped off by the movement of the scraper and the soft brush, thereby realizing the intermittent cleaning of the shell;

[0018] 6. By setting the second spring in the second cleaning mechanism to cooperate with the rack, when the pushing block is separated from the second cleaning mechanism, the rack is reset due to the action of the second spring, and the third soft brush is driven to rotate, thereby realizing the re-cleaning of the filter screen. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a sectional view of the pushing block and the control rod of the present application when they are separated;

[0020] Figure 2 It is a sectional view of the present application in the A-A direction; Figure 1

[0021] It is a sectional view of the present application in the B-B direction; Figure 3 Figure 1 It is a sectional view of the present application in the C-C direction;

[0022] Figure 4 Figure 1 It is a sectional view of the present application in the D-D direction.

[0023] Figure 5 It is a sectional view of the present application in the D-D direction. Figure 1

[0024] ​​​The figure, the shell 1, the annular groove 11, the fan blade 22, the cover 21, the filter screen 4, the frame 5, the linkage shaft 3, the worm 31, the worm wheel 71, the first chain wheel 72, the second chain wheel 73, the chain 74, the push block 75, the sliding plate 61, the control rod 611, the first straight groove 612, the second straight groove 613, the first spring 62, the first swing rod 63, the first protrusion 631, the second swing rod 64, the second protrusion 641, the first transmission shaft 94, the first scraper block 91, the first soft brush 92, the first scraper 93, the second transmission shaft 95, the second soft brush 96, the second scraper block 97, the second scraper 98, the rack 81, the second spring 85, the gear 82, the soft brush handle 83, the third soft brush 84. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0026] It should be noted that when a component is referred to as "mounted on" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "disposed on" another component, it can be directly disposed on the other component or there can be a middle component. When a component is referred to as "fixed on" another component, it can be directly fixed on the other component or there can be a middle component.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0028] As Figure 1As shown in the present application, a kind of brushless motor is disclosed, the brushless motor includes: shell 1, the motor is equipped in the shell 1;Fan, the fan includes cover 21, the cover 21 is fixedly connected with the shell 1, the cover 21 is equipped with the filter screen 4 of dust blocking;Frame body 5, the frame body 5 is fixedly connected with the cover 21, first cleaning mechanism, the first cleaning mechanism is arranged on frame body 5, and the first cleaning mechanism can clean the shell 1;Second cleaning mechanism, the second cleaning mechanism is arranged on frame body 5, and the second cleaning mechanism can clean the filter screen 4;Transmission mechanism, the transmission mechanism is arranged on frame body 5 and is connected with the motor output shaft, and the transmission mechanism can drive the first cleaning mechanism or second cleaning mechanism to work.

[0029] Preferably, as shown in the present application, Figure 1 And Figure 4 As shown in the present application, the transmission mechanism includes linkage shaft 3, worm 31, worm wheel 71, first chain 74 wheel 72, second chain 74 wheel 73, chain 74 and push block 75, the linkage shaft 3 is arranged on frame body 5 and is fixedly connected with the motor output shaft, the worm 31 is coaxially fixedly connected with the linkage shaft 3, the worm wheel 71 is engaged with the worm 31, the second chain wheel 73 and first chain wheel 72 are arranged on frame body 5, the second chain wheel 73 is coaxially arranged with the worm wheel 71 and is connected with the first chain wheel 72 by the chain 74, the push block 75 is fixedly arranged on the chain 74, and the motor rotation can drive the linkage shaft 3 to rotate, so as to drive the worm wheel 71 worm 31 to rotate, in turn drive the second chain wheel 73 to rotate, the second chain wheel 73 rotation can drive the chain 74 to rotate, while driving the first chain wheel 72 to rotate cooperatively, the chain 74 rotation can drive the push block 75 to rotate, when the push block 75 moves in the right side of first chain wheel 72 can drive the first cleaning mechanism to move, when the push block 75 moves to the left side of first chain wheel 72 with the chain 74 can drive the second cleaning mechanism to move.

[0030] It can be understood that by setting transmission mechanism connected with the motor output shaft, the chain 74 is used to drive the push block 75 to move in the left side and right side of first chain wheel 72 respectively, so as to control the first cleaning mechanism and the second cleaning mechanism respectively, so that the shell 1 and the filter screen 4 can be cleaned alternately when the motor works, and the action is orderly.

[0031] Preferably, as shown in the present application, Figure 1 、 Figure 2 And Figure 5As shown, the first cleaning mechanism comprises a sliding plate 61, a first spring 62, a first swing rod 63, a second swing rod 64, the first swing rod 63 and the second swing rod 64 are rotationally arranged with the linkage shaft 3, the first swing rod 63 is provided with a first protrusion 631, the second swing rod 64 is provided with a second protrusion 641, the sliding plate 61 is slidingly arranged on the frame body 5, the first spring 62 abuts against the frame body 5 and the sliding plate 61 at the same time, the lower end of the sliding plate 61 is provided with a control rod 611, and the upper end of the sliding plate 61 is provided with a first straight slot 612 and a second straight slot 613, the first protrusion 631 is slidingly arranged in the first straight slot 612, the second protrusion 641 is slidingly arranged in the second straight slot 613, when the knob 75 is at the right side of the first chain wheel 72, the control rod 611 can abut against the knob 75 and the downward movement of the knob 75 can drive the control rod 611 to move downward, thereby driving the sliding plate 61 to move downward against the first spring 62, and further driving the first protrusion 631 and the second protrusion 641 to slide in the first straight slot 612 and the second straight slot 613, and further driving the first swing rod 63 and the second swing rod 64 to rotate around the linkage shaft 3, when the knob 75 moves away from the control rod 611, the sliding plate 61 can move upward under the action of the first spring 62, thereby driving the first swing rod 63 and the second swing rod 64 to rotate in the opposite direction.

[0032] Preferably, the first cleaning mechanism further comprises a first transmission shaft 94, a first scraper block 91, a second transmission shaft 95 and a second scraper block 97, the housing 1 is provided with an annular groove 11, one end of the first transmission shaft 94 is fixedly connected with the first swing rod 63, the other end of the first transmission shaft 94 is fixedly connected with the first scraper block 91, one end of the second transmission shaft 95 is fixedly connected with the second swing rod 64, the other end of the second transmission shaft 95 is fixedly connected with the second scraper block 97, and the first scraper block 91 and the second scraper block 97 are slidingly arranged in the annular groove 11, the first swing rod 63 and the second swing rod 64 can drive the first transmission shaft 94 and the second transmission shaft 95 to rotate, thereby driving the first scraper block 91 and the second scraper block 97 to slide along the annular groove 11.

[0033] Preferably, the first cleaning mechanism further comprises a first soft brush 92, a first scraper 93, a second soft brush 96 and a second scraper 98, the first soft brush 92, the first scraper 93, the second soft brush 96 and the second scraper 98 are arranged on the housing 1, and the first soft brush 92 and the first scraper 93 are fixedly connected with the first scraper block 91, and the second soft brush 96 and the second scraper 98 are fixedly connected with the second scraper block 97.

[0034] It can be understood that, through the cooperation of the sliding plate 61, the first spring 62 and the knob 75, the knob 75 can drive the sliding plate 61 to move downward when the knob 75 moves rightward and downward, and through the first swing rod 63 and the second swing rod 64, the first transmission shaft 94 and the second transmission shaft 95 are driven to rotate around the annular groove 11, and then the first scraper 93, the second scraper 98, the first soft brush 92 and the second soft brush 96 are driven to move upward, and when the knob 75 is disengaged from the sliding plate 61, the sliding plate 61 can be reset under the action of the first spring 62, and at the same time, the first scraper 93, the second scraper 98, the first soft brush 92 and the second soft brush 96 are driven to move downward to clean the shell 1.

[0035] Preferably, as shown in Figure 1 and Figure 3 , the second cleaning mechanism comprises a rack 81, a second spring 85 and a gear 82, the gear 82 is rotationally arranged on the linkage shaft 3, the rack 81 is slidingly arranged on the frame 5 and is engaged with the gear 82, and the second spring 85 abuts against the frame 5 and the rack 81 at the same time, when the knob 75 moves to the left side of the first chain wheel 72, the knob 75 can abut against the rack 81, and the upward movement of the knob 75 can push the rack 81 to move upward against the second spring 85, when the knob 75 moves upward to disengage from the rack 81, the rack 81 can move downward again under the action of the second spring 85, thereby driving the gear 82 to rotate reversely.

[0036] Preferably, the second cleaning mechanism further comprises a soft brush handle 83 and a third soft brush 84, the third soft brush 84 is arranged on the filter screen 4 and is fixed with the soft brush handle 83, and the soft brush handle 83 is fixed with the gear 82.

[0037] It can be understood that, when the knob 75 moves leftward and upward, the rack 81 can be driven to move upward, and the gear 82 can be driven to rotate, thereby driving the soft brush to clean the filter screen 4 once, when the knob 75 disengages from the rack 81, the rack 81 can move downward again under the action of the second spring 85, thereby driving the gear 82 to rotate reversely, driving the soft brush to clean the filter screen 4 again, and at the same time, the rack 81 is reset.

[0038] Preferably, the fan comprises a fan blade 22, and the fan blade 22 is arranged in the cover 21 and is fixedly connected with the motor output shaft.

[0039] The working mode of the present application is as follows: Figure 1When the motor is normally rotated, the fan blade 22 is rotated by the motor output shaft, and the air flow is driven to carry away the heat generated by the motor to dissipate heat. Since the linkage shaft 3 is fixedly connected with the motor output shaft, the linkage shaft 3 is rotated when the motor rotates, thereby driving the worm 31, the worm wheel 71, the second chain wheel 73, the chain 74, the first chain wheel 72, the driving block 75, the sliding plate 61, the first protrusion 631, the second protrusion 641, the first swing rod 63, the second swing rod 64, the first transmission shaft 94, the second transmission shaft 95, the first scraper 93, the first soft brush 92, the second scraper 98, and the second soft brush 96 to rotate. Figure 1 When the driving block 75 moves to the position shown in the figure, the driving block 75 is separated from the control rod 611, and the sliding plate 61 is pushed up by the first spring 62. The first scraper 93 and the second scraper 97 are slid downward along the annular groove 11 through the first swing rod 63 and the second swing rod 64. The dirt on the shell 1 is scraped off by the first scraper 93, the second scraper 98, the first soft brush 92, and the second soft brush 96, and the shell 1 is cleaned.

[0040] When the driving block 75 is separated from the control rod 611, the driving block 75 moves to the left side of the first chain wheel 72 along the chain 74 and moves upward. At this time, the driving block 75 contacts the rack 81, so that the driving block 75 pushes the rack 81 to move upward against the second spring 85, drives the gear 82 to rotate, and drives the soft brush handle 83 to rotate around the linkage shaft 3, thereby driving the third soft brush 84 to clean the filter screen 4 again. When the driving block 75 moves upward to be separated from the rack 81, the rack 81 moves downward under the push of the second spring 85, drives the gear 82 to rotate, and the soft brush handle 83 also rotates, thereby driving the third soft brush 84 to clean the filter screen 4 again.

[0041] When the driving block 75 is separated from the rack 81, the driving block 75 moves to the right side of the first chain wheel 72 again along the chain 74 and moves downward and contacts the control rod 611 again, thereby forming a cycle. When the motor is continuously rotated, the shell 1 and the filter screen 4 can be alternately cleaned.

[0042] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered within the scope of the present disclosure.

[0043] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it shall not be understood as a limitation on the patent scope of the present application. It shall be pointed out that, for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, and these shall be within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A brushless motor, characterized in that, The brushless motor includes: A housing, within which a motor is housed; A fan, the fan including an outer cover, the outer cover being fixedly connected to the outer shell, and the outer cover being provided with a filter screen to block dust; The frame is fixedly connected to the outer cover. A first cleaning mechanism is mounted on the frame and is capable of cleaning the outer casing. The second cleaning mechanism is mounted on the frame and is capable of cleaning the filter screen. A transmission mechanism is mounted on the frame and connected to the motor output shaft. The transmission mechanism can drive the first cleaning mechanism or the second cleaning mechanism to work. The transmission mechanism includes a linkage shaft, a worm gear, a worm wheel, a first chain wheel, a second chain wheel, a chain, and a detonator. The linkage shaft is mounted on the frame and fixedly connected to the motor output shaft. The worm gear is coaxially fixedly connected to the linkage shaft, and the worm wheel meshes with the worm gear. The second chain wheel and the first chain wheel are mounted on the frame. The second chain wheel is coaxially mounted with the worm wheel and connected to the first chain wheel via the chain. The detonator is fixedly mounted on the chain. The rotation of the motor can drive the linkage shaft to rotate, thereby driving the worm wheel and worm gear to rotate, which in turn drives the second chain wheel to rotate. The rotation of the second chain wheel can drive the chain to rotate, and simultaneously drive the first chain wheel to rotate in coordination. The rotation of the chain can drive the detonator to rotate. When the detonator moves to the right side of the first chain wheel, it can drive the first cleaning mechanism to move. When the detonator moves with the chain to the left side of the first chain wheel, it can drive the second cleaning mechanism to move. The first cleaning mechanism includes a sliding plate, a first spring, a first swing rod, and a second swing rod. The first and second swing rods are rotatably connected to the linkage shaft. The first swing rod has a first protrusion, and the second swing rod has a second protrusion. The sliding plate is slidably mounted on the frame. The first spring simultaneously abuts against the frame and the sliding plate. The lower end of the sliding plate has a control rod, and the upper end of the sliding plate has a first straight groove and a second straight groove. The first protrusion is slidably mounted in the first straight groove, and the second protrusion is slidably mounted in the second straight groove. When the actuating block is to the right of the first chain wheel, the control rod can abut against the actuating block, and the downward movement of the actuating block can drive the control rod to move downward, thereby driving the sliding plate to move downward against the first spring. This causes the first and second protrusions to slide in the first and second straight grooves, and then drives the first and second swing rods to rotate around the linkage shaft. When the actuating block moves to the point of disengaging from the control rod, the sliding plate can again drive the first and second swing rods to rotate in the opposite direction under the action of the first spring. The second cleaning mechanism includes a rack, a second spring, and a gear. The gear is rotatably mounted on the linkage shaft, and the rack is slidably mounted on the frame and meshes with the gear. The second spring simultaneously abuts against the frame and the rack. When the actuating block moves to the left side of the first chain wheel, the actuating block abuts against the rack. The upward movement of the actuating block pushes the rack upward against the second spring. When the actuating block moves upward to disengage from the rack, the rack moves downward under the action of the second spring, thereby driving the gear to rotate in the opposite direction.

2. The brushless motor according to claim 1, characterized in that, The first cleaning mechanism further includes a first drive shaft, a first scraper plate, a second drive shaft, and a second scraper plate. An annular groove is provided on the outer casing. One end of the first drive shaft is fixedly connected to the first swing rod, and the other end of the first drive shaft is fixedly connected to the first scraper plate. One end of the second drive shaft is fixedly connected to the second swing rod, and the other end of the second drive shaft is fixedly connected to the second scraper plate. The first scraper plate and the second scraper plate are slidably disposed in the annular groove. The first swing rod and the second swing rod can drive the first drive shaft and the second drive shaft to rotate, thereby driving the first scraper plate and the second scraper plate to slide along the annular groove.

3. The brushless motor according to claim 2, characterized in that, The first cleaning mechanism further includes a first soft brush, a first scraper, a second soft brush, and a second scraper. The first soft brush, the first scraper, the second soft brush, and the second scraper are disposed on the outer casing, and the first soft brush and the first scraper are fixedly connected to the first scraper plate, and the second soft brush and the second scraper are fixedly connected to the second scraper plate.

4. The brushless motor according to claim 3, characterized in that, The second cleaning mechanism further includes a soft brush handle and a third soft brush, the third soft brush being disposed on the filter screen and fixed to the soft brush handle, the soft brush handle being fixed to the gear.

5. The brushless motor according to claim 1, characterized in that, The fan includes fan blades, which are disposed inside the outer casing and fixedly connected to the motor output shaft.

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