An outer rotor brushless blower motor

Abstract

The present invention relates to the technical field of motors, and discloses an outer rotor brushless wind cylinder motor, comprising a rotor assembly and a stator assembly, wherein the rotor assembly comprises an outer casing and a front shaft cover, wherein one end of the front shaft cover is connected to an end face of one side of the outer casing, and a circle of permanent magnets is arranged on the inner wall of the outer casing, wherein the permanent magnets are annularly arranged on the outer ring of the stator assembly, so that the motor can be driven in both directions and in reverse, and can be driven as required, so that a plurality of driving ends are provided for the motor, and the motor bearings can be regularly and automatically maintained, so as to reduce damage to the motor bearings and extend the service life of the entire motor, and through a separate bearing lubrication drive, a single motor bearing can be lubricated as required, and adjustments can be made according to the use of the motor bearings to reduce unnecessary maintenance costs, so that the lubricating oil can be quickly swept into the motor bearing by a coating brush, so as to reduce the waste of lubricating oil caused by the lubricating oil flowing out of the motor bearings.

Description

Technical Field

[0001] The invention relates to the technical field of motors, and in particular to an outer rotor brushless blower motor. Background Art

[0002] An outer rotor motor is a type of motor. The stator of a traditional outer rotor motor includes an aluminum base and an aluminum support tube, and the support tube and the base are a one-piece whole. The base is usually disc-shaped and is used to install the motor. The outer rotor needs to be connected to the shaft of the inner stator through a bearing sleeve. When started, the outer rotor rotates to become the output end, and the shaft of the inner stator becomes the limit structure of the outer rotor. When used for a long time, the bearing will be worn to a certain extent, resulting in a reduction in service life.

[0003] The patent with patent publication number CN116006667A discloses an integrated outer rotor motor and reducer assembly based on lubricating oil cooling. The patent facilitates the circulation and discharge of the lubricating oil and its introduction into the casing, facilitates filtering and cooling the lubricating oil, facilitates maintaining a low temperature of the lubricating oil, and facilitates lubrication of the components inside the reducer component and the outer rotor assembly.

[0004] The above patent has the following defects:

[0005] 1. The existing external rotor motor can only realize unidirectional drive by connecting with the external rotor, while the bidirectional drive motor on the market can only realize bidirectional synchronous and unidirectional drive, and cannot realize bidirectional reverse drive, and cannot be flexibly adjusted according to the practical needs of the motor;

[0006] 2. The existing oiling and lubrication mechanism cannot adjust the distance between the bearing and the lubricating mechanism as needed, and during the oiling process, it is not possible to oil the two bearings separately or simultaneously, resulting in poor oiling effect and inability to differentiate oiling according to the bearing wear conditions;

[0007] 3. During the lubrication process, the uniformity of the oil supply cannot be guaranteed, which causes the lubricating oil to flow turbulently. If the lubrication effect is to be guaranteed, too much lubricating oil will be wasted. If the lubrication effect is to be saved, the lubrication effect cannot be guaranteed.

[0008] Therefore, an outer rotor brushless blower motor is invented. Summary of the invention

[0009] The object of the present invention is to provide an outer rotor brushless blower motor to solve the above-mentioned problems.

[0010] To achieve the above object, the present invention provides the following technical solution: an outer rotor brushless fan motor, comprising a rotor assembly and a stator assembly, wherein the rotor assembly comprises an outer casing and a front shaft cover, wherein one end of the front shaft cover is connected to an end surface of one side of the outer casing, a circle of permanent magnets is arranged on the inner wall of the outer casing, and the permanent magnets are arranged in an annular manner on the outer ring of the stator assembly, and an outer rotor output sleeve is connected to the output end of the outer casing;

[0011] The stator assembly includes a base flange, a directional shaft is installed at the center of the base flange, a plurality of stator cores are annularly fixed on the outer arc surface of the base flange, and a stator winding is wound on the surface of each stator core. The rear end of the base flange extends to connect with a cover, and a reverse drive structure installed on the cover is driven by the rotor assembly;

[0012] One end of the directional shaft rod penetrates the machine base flange and is arranged in the outer rotor output shaft sleeve, and the front and rear inner walls of the outer rotor output shaft sleeve are connected to the directional shaft rod through the motor bearing.

[0013] As a preferred solution of the outer rotor brushless blower motor of the present invention, the reverse drive structure includes a reverse shaft rod vertically installed at the center of the cover, and one end of the reverse shaft rod passes through the cover, two limit inserts are provided on the outer arc surface of the opposite end of the reverse shaft rod and the directional shaft rod, one end of the driving shaft rod is inserted and sleeved on the outside of the reverse shaft rod, a slot matching the limit inserts is provided on the groove wall inside the driving shaft rod and inserted with one end of the reverse shaft rod, one end of the driving shaft rod near the cover is sleeved with a driving gear, a driving gear ring fixed on the inner wall of the outer casing, and three auxiliary gears arranged between the driving gear ring and the driving gear, and the three auxiliary gears are installed on the inner wall of the cover through the shaft rod;

[0014] The driving gear sleeved on the driving shaft is movably meshed with the three auxiliary gears, and the inner teeth of the driving gear ring are meshed with the three auxiliary gears. When the outer casing rotates clockwise, the driving gear ring is always driven to rotate clockwise. After the driving gear is aligned with the three auxiliary gears, the driving gear ring drives the driving gear and the driving shaft to rotate counterclockwise through the three auxiliary gears. When the driving shaft rotates counterclockwise, the slot on its inner wall is always engaged with the limiting strip, thereby driving the reverse shaft to rotate counterclockwise, realizing that the motor can be driven in both directions and in reverse. It can be driven as needed, providing the motor with multiple driving ends, which are opposite to its own driving direction, to meet the different driving requirements of a motor.

[0015] As a preferred solution of the outer rotor brushless wind tube motor described in the present invention, the directional shaft and the driving shaft are connected by a driving control component, the driving control component includes a driving sleeve connected to the directional shaft at one end, the driving sleeve is divided into two arc grooves by a sealing partition, a central tube for the two arc grooves to communicate with each other is arranged at the center of the sealing partition, the open end of the arc groove at one end of the sealing partition is closed by the directional shaft, a piston plate is arranged in the arc groove at the other end of the sealing partition, a micro air pump is fixed on the machine cover, the air pipe of the micro air pump is communicated with the arc groove at the end of the directional shaft, and a control rod with one end connected to the piston plate through a bearing, one end of the control rod is connected to the driving shaft, and is driven in different directions through the arc groove on the inner wall of the driving sleeve, and the drive can be adjusted according to needs to achieve the flexibility of the entire drive.

[0016] As a preferred solution of the outer rotor brushless wind tube motor described in the present invention, a bearing lubrication device is installed on a section of directional shaft located inside the outer rotor output shaft sleeve, and one end of the directional shaft is divided into directional shaft a and directional shaft b by the bearing lubrication device. The bearing lubrication device includes a fixed collar arranged between the directional shaft a and the directional shaft b, and the two ends of the fixed collar are sleeved on the directional shaft a and the directional shaft b through a circular plate. The separating end surfaces of the directional shaft a and the directional shaft b are extended with built-in ring plates connected to the inner wall of the fixed collar, and left and right coating components are arranged at both ends of the fixed collar, and the coating ends of the left and right coating components are respectively connected to the end faces of the two motor bearings. The symmetrical arrangement of the left and right coating components realizes the oiling and lubrication maintenance of the two motor bearings. The bearing lubrication device can meet the automatic oiling and lubrication maintenance of the bearings inside the motor, avoid the inconvenience of manual oiling, and can automatically maintain the motor bearings regularly, reduce motor bearing damage, and extend the service life of the entire motor.

[0017] As a preferred solution of the outer rotor brushless wind cylinder motor described in the present invention, the left coating assembly and the right coating assembly located at both ends of the fixed collar have the same structure and are symmetrically arranged at both ends of the fixed collar, the left coating assembly includes an annular sleeve, one end of the annular sleeve is penetrated and installed on the sealing ring plate, the circular plate is provided with an annular groove for installing the sealing ring plate, the inner and outer arc surfaces of the sealing ring plate are sealed and connected to the inner wall of the annular groove through bearings, an ejector rod is inserted and installed in the annular sleeve, a piston is arranged in the annular sleeve, one end of the ejector rod is connected to the piston, and the other end of the ejector rod penetrates the annular sleeve and is connected to the coating brush, the inner and outer arc surfaces of the sealing ring plate are installed through sealing bearings to ensure that a sealed space is formed inside the annular sleeve, when the gas in the annular cavity a enters the annular sleeve, under the action of air pressure, the piston drives the ejector rod and the coating brush to move, to ensure that the coating brush is in close contact with the oil supply surface of the motor bearing, thereby reducing oil leakage.

[0018] As a preferred solution of the outer rotor brushless blower motor of the present invention, wherein: an air injection groove is opened at the center of the directional shaft rod, an oil pipeline is arranged in the air injection groove, one end of the air injection groove is interconnected with the arc groove of the directional shaft rod through the air inlet pipe, an electromagnetic valve is installed on the air inlet pipe, one end of the oil pipeline penetrates the directional shaft rod and the machine cover and is connected with the oil inlet pipeline, the directional shaft rod a and the directional shaft rod b of the directional shaft rod are connected by the oil pipeline, the air injection groove is interconnected with the partition between the directional shaft rod a and the directional shaft rod b, and the inner wall at the center of the fixed collar is connected with the oil pipeline through a support plate;

[0019] Two oil separation components with the same structure are symmetrically arranged on the oil pipeline, and the two oil separation components divide the oil pipeline into three sections;

[0020] The oil distribution assembly comprises a rotating ring, both ends of which are respectively installed with ports on both sides of the oil pipeline separation through sealing bearings, an oil distribution pipe obliquely fixed on the rotating ring, an annular groove for the oil distribution pipe to penetrate is provided on the built-in ring plate, a sealing rotating ring plate is installed in the annular groove through inner and outer sealing bearings, the oil distribution pipe is installed through the sealing rotating ring plate, and a telescopic pipe is arranged in the annular sleeve, one end of the oil distribution pipe is connected to the telescopic pipe, and one end of the annular sleeve is connected to the oil distribution pipe through a support plate;

[0021] The ejector rod is provided with an oil supply hole groove, an oil outlet at one end of the oil supply hole groove is opened at the center of the coating brush, and the other end of the oil supply hole groove is communicated with the telescopic pipe;

[0022] The built-in ring plates on the directional shaft a and the directional shaft b respectively form two sealed annular cavities between the two circular plates, and the annular cavities include annular cavity a and annular cavity b. The cavity between the built-in ring plates on the directional shaft a and the directional shaft b is annular cavity c, and the annular cavity c is communicated with the gas injection groove. An air distribution pipe a communicated with the gas injection groove is provided on the directional shaft a, and one end of the air distribution pipe a is communicated with the annular cavity a. An air distribution pipe b communicated with the gas injection groove is provided on the directional shaft b, and one end of the air distribution pipe b is communicated with the annular cavity b. The gas in the gas injection groove is respectively transported to the annular cavity a and the annular cavity b through the air distribution pipe a and the air distribution pipe b. The annular cavity a and the annular cavity b divide the interior of the fixed ring into two sealed driving spaces. The drive adjustment of the left coating assembly and the right coating assembly is realized by opening and closing the air distribution pipe a and the air distribution pipe b. Through the separate bearing lubrication drive, the single motor bearing can be lubricated as needed, and adjustments can be made according to the use of the motor bearings, thereby reducing unnecessary maintenance costs, saving lubrication costs, and avoiding waste of lubricating oil.

[0023] As a preferred solution of the outer rotor brushless wind tube motor described in the present invention, wherein: an auxiliary lubrication device is arranged on the bearing lubrication device, and the auxiliary lubrication device includes an annular built-in tooth groove fixed on the inner wall of the outer rotor output shaft sleeve, a left-directional drive component and a right-directional drive component symmetrically arranged on both sides of the annular built-in tooth groove, and a left-rotating gear and a right-rotating gear symmetrically arranged at both ends of the fixed collar, the left-rotating gear and the right-rotating gear are respectively connected to the directional shaft through bearing sleeves, and the left-rotating gear and the right-rotating gear are both provided with mounting holes for the left coating component and the right coating component to penetrate, and the left-directional drive component and the right-directional drive component can respectively drive the left-rotating gear and the right-rotating gear to rotate.

[0024] As a preferred solution of the outer rotor brushless wind cylinder motor described in the present invention, the left-direction drive component includes a mounting bracket fixed to the outer end of the fixed collar, a U-shaped groove for accommodating the guide shaft tube is provided at the upper end of the mounting bracket, and a rotating shaft rod installed on the guide shaft tube is penetrated, and both ends of the guide shaft tube are axially connected to the rotating shaft rod, and the two ends of the rotating shaft rod are respectively sleeved with a side gear a and a side gear b, the side gear a is movably engaged with the left rotating gear, and the side gear b is movably engaged with the annular built-in tooth groove, and an output sleeve is installed on the outer wall of the fixed collar, one end of the output sleeve is communicated with the annular cavity c through an internal pipe, a piston is arranged in the output sleeve, and a lifting rod is installed on the piston, one end of the lifting rod penetrates the output sleeve and is movably connected to the guide shaft tube, when the gas in the annular cavity c is transported to the output sleeve through the internal pipe, the piston in the output sleeve is driven by the action of the gas. The lifting rod is pushed up, thereby lifting one end of the guide shaft tube, so that the guide shaft tube rotates around the elastic connection component to make it inclined. When the guide shaft tube is tilted, the side gear a at one end of the rotating shaft rod is meshed with the left rotating gear, and the side gear b at the other end of the rotating shaft rod is meshed with the annular built-in tooth groove. The annular built-in tooth groove drives the side gear b to rotate clockwise, thereby driving the rotating shaft rod and the side gear a to rotate clockwise, and the side gear a drives the left rotating gear to rotate counterclockwise, thereby driving the left coating component to rotate counterclockwise, so as to realize the reverse movement of the coating brush and the motor bearing. The coating brush and the motor bearing rotate in the opposite direction to give each other a reverse friction force, so that the lubricating oil on the coating brush can be evenly coated on the motor bearing. Under the action of the reverse rotation, the lubricating oil can be quickly swept into the motor bearing by the coating brush, thereby reducing the waste of lubricating oil caused by the outflow of lubricating oil from the motor bearing.

[0025] As a preferred solution of the outer rotor brushless wind cylinder motor described in the present invention, wherein: the two ends of the guide shaft tube located in the U-shaped groove are connected to the mounting bracket through an elastic connection component, the elastic connection component includes an outer fixed ring sleeve a and an outer fixed ring sleeve b fixed on the inner walls of both sides of the U-shaped groove, and a rotating ring sleeve a and a rotating ring sleeve b symmetrically and vertically installed on both sides of the guide shaft tube, the outer fixed ring sleeve a and the rotating ring sleeve a are both provided with hole grooves for installing the limiting shaft rod a, the outer fixed ring sleeve b and the rotating ring sleeve b are both provided with hole grooves for installing the limiting shaft rod b, the outer walls of the limiting shaft rod a and the limiting shaft rod b are both sleeved with torsion springs, when no oil is needed, the two torsion springs elastically limit the rotating ring sleeve a and the rotating ring sleeve b through elastic force, so that the guide shaft tube is guaranteed to be in a horizontal state in the absence of forced driving by external force, and the internal rotating shaft rod is in the same horizontal state as the guide shaft tube, so that the side gear a and the side gear b do not contact with the left rotating gear and the annular built-in tooth groove when not driven, so as to avoid affecting the normal operation of the motor.

[0026] Another object of the present invention is to provide a method for using an outer rotor brushless blower motor, the purpose of which is that the motor can increase its drive end according to demand and realize two-way opposite drive, and can automatically and evenly lubricate the bearings.

[0027] To achieve the above object, the present invention provides the following technical solution: a method for using an outer rotor brushless blower motor, comprising the following steps:

[0028] After the rotor assembly and the stator assembly are powered on, they cooperate with each other to realize the rotation of the outer casing, the front shaft cover and the outer rotor output shaft sleeve, so that the entire motor is driven externally;

[0029] The micro air pump injects gas into the arc groove at the end of the directional shaft rod through the air pipe, and the gas is transported to the arc groove at the other end through the central tube. Under the action of air pressure, the piston plate and the control rod connected thereto are driven to move, and the control rod pushes the driving shaft rod to slide on the reverse shaft rod. When the driving gear on the driving shaft rod is aligned and meshed with the three auxiliary gears, the driving gear ring rotates clockwise to drive the driving gear and the driving shaft rod to rotate counterclockwise through the three auxiliary gears, thereby driving the reverse shaft rod to rotate counterclockwise, realizing two-way opposite drive;

[0030] When the motor bearing needs lubrication, the micro air pump injects air into the arc groove at the end of the directional shaft through the air pipe, and the air enters the air injection groove of the directional shaft through the air inlet pipe. The gas in the air injection groove is transported to the annular cavity a and the annular cavity b respectively through the air distribution pipe a and the air distribution pipe b. Under the action of air pressure, the left coating component and the right coating component in the annular cavity a and the annular cavity b are extended and retracted, so that the coating brushes at both ends contact the oil supply surface of the motor bearing. While the left coating component and the right coating component are extended and retracted, the oil delivery pipeline is connected to the lubricating oil through the oil inlet pipeline, and the oil delivery pipeline is filled with lubricating oil. The lubricating oil is transported to the telescopic pipe through the oil distribution pipe, the telescopic pipe guides the oil into the oil supply hole groove, the oil supply hole groove guides the oil into the coating brush through the oil outlet, and the coating brush applies the lubricating oil to the motor bearing. During the oil supply process, the rotor assembly can continue to operate, and the motor bearing rotates and fits with the coating brush during the rotation process to achieve oil supply and lubrication inside the motor bearing. When oil supply is not needed, the micro air pump performs reverse air extraction, and the reverse air extraction drives the coating brush to reset. At the same time of air extraction, the oil inlet pipeline reversely extracts oil from the oil delivery pipeline;

[0031] During the oil supply process, the gas in the annular cavity c is transported to the output sleeve through the internal pipe, and the lifting rod on the piston in the output sleeve is driven upward by the action of the gas, thereby lifting one end of the guide shaft tube, causing the guide shaft tube to rotate around the elastic connection component to tilt it. When the guide shaft tube tilts, the side gear a at one end of the rotating shaft rod meshes with the left rotating gear, and the side gear b at the other end of the rotating shaft rod meshes with the annular built-in tooth groove. The annular built-in tooth groove drives the side gear b to rotate clockwise, thereby driving the rotating shaft rod and the side gear a to rotate clockwise, and the side gear a drives the left rotating gear to rotate counterclockwise, thereby driving the left coating component to rotate counterclockwise, realizing the reverse movement of the coating brush and the motor bearing, and lubricating the oil while moving in the reverse direction;

[0032] When the right coating component needs to be rotated and lubricated, the driving process is the same as above;

[0033] When oil is not needed, the micro air pump performs reverse air extraction, the piston in the output sleeve and the lifting rod are reset, and both sides of the guide shaft tube are reset under the action of the torsion spring. When oil is not supplied, the torsion force of the torsion spring ensures that the guide shaft tube is in a horizontal state in the initial state, and the side gears a and b at both ends of the rotating shaft rod are not in contact with the left rotating gear and the annular built-in tooth groove.

[0034] Technical effects and advantages of the present invention:

[0035] 1. When the driving shaft rotates counterclockwise, the slot on its inner wall is always engaged with the limit strip, thereby driving the reverse shaft to rotate counterclockwise, so that the motor can be driven in both directions and in reverse. It can be driven as needed, providing the motor with multiple driving ends, which are opposite to its own driving direction, to meet different driving requirements of a motor.

[0036] 2. The symmetrical arrangement of the left coating assembly and the right coating assembly enables lubrication and maintenance of the two motor bearings. The bearing lubrication device can automatically lubricate and maintain the internal bearings of the motor, avoiding the inconvenience of manual lubrication. It can also automatically maintain the motor bearings regularly, reduce motor bearing damage, and extend the service life of the entire motor.

[0037] 3. Under the action of air pressure, the piston drives the ejector rod and the coating brush to move, ensuring that the coating brush is in close contact with the oil supply surface of the motor bearing to reduce oil leakage. Through the separate bearing lubrication drive, the single motor bearing can be lubricated as needed, and adjustments can be made according to the use of the motor bearing, reducing unnecessary maintenance costs, saving lubrication costs, and avoiding waste of lubricating oil.

[0038] 4. By rotating the coating brush and the motor bearing in opposite directions to give each other a reverse friction force, the lubricating oil on the coating brush can be evenly coated on the motor bearing. Under the action of the reverse rotation, the lubricating oil can be quickly swept into the motor bearing by the coating brush, reducing the waste of lubricating oil caused by the outflow of lubricating oil from the motor bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0040] Figure 2 It is a half-section view of the outer casing structure of the present invention.

[0041] Figure 3 It is a half-section view of the reverse driving structure of the present invention.

[0042] Figure 4 For the present invention Figure 3 Enlarged view of point A.

[0043] Figure 5 It is a schematic diagram of the installation structure of the bearing lubrication device of the present invention.

[0044] Figure 6 It is a half-section view of the directional shaft structure of the present invention.

[0045] Figure 7 For the present invention Figure 6 Enlarged view of point B.

[0046] Figure 8 It is a half-section view of the left coating component structure of the present invention.

[0047] Fig. 9 For the present invention Figure 8 Enlarged view of point C.

[0048] Fig.10This is a schematic diagram of the installation structure of the auxiliary lubrication device of the present invention.

[0049] Fig.11 It is a half-section view of the auxiliary lubrication device structure of the present invention.

[0050] Fig.12 It is a schematic diagram of the structure of the left-direction drive assembly of the present invention.

[0051] Fig.13 It is a schematic structural diagram of the auxiliary lubrication device of the present invention in operating state.

[0052] Fig.14 It is an exploded view of the elastic connection component structure of the present invention.

[0053] In the figure:

[0054] 1. Rotor assembly; 11. Outer casing; 111. Permanent magnet; 112. Outer rotor output sleeve; 1121. Motor bearing; 12. Front shaft cover; 2. Stator assembly; 21. Frame flange; 211. Directional shaft rod; 2111. Internal ring plate; 2112. Air injection groove; 2113. Oil pipeline; 22. Stator core; 23. Stator winding; 24. Machine cover;

[0055] 3. Reverse drive structure; 31. Reverse shaft; 311. Limiting strip; 32. Driving shaft; 321. Driving gear; 33. Driving gear ring; 34. Auxiliary gear;

[0056] 4. drive control assembly; 41. drive sleeve; 411. sealing baffle; 42. micro air pump; 43. control rod;

[0057] 5. Bearing lubrication device; 51. Fixed collar; 52. Left coating assembly; 521. Annular sleeve; 522. Sealing ring plate; 523. Ejector rod; 5231. Oil hole groove; 524. Coating brush; 53. Right coating assembly;

[0058] 6. Oil distribution assembly; 61. Rotating ring; 62. Oil distribution pipe; 63. Sealing rotating ring plate; 64. Telescopic pipe;

[0059] 7. Auxiliary lubrication device; 71. Annular built-in tooth groove; 72. Left split drive assembly; 721. Mounting bracket; 722. Guide shaft tube; 723. Rotating shaft rod; 7231. Side gear a; 7232. Side gear b; 724. Output sleeve; 7241. Lifting rod; 73. Right split drive assembly; 74. Left rotating gear; 75. Right rotating gear;

[0060] 8. Elastic connection assembly; 81. External fixed ring sleeve a; 82. External fixed ring sleeve b; 83. Rotating ring sleeve a; 84. Rotating ring sleeve b; 85. Limiting shaft rod a; 851. Torsion spring; 86. Limiting shaft rod b. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Example 1

[0063] Reference Figure 1-4 , which is the first embodiment of the present invention, provides an outer rotor brushless wind cylinder motor, including a rotor assembly 1 and a stator assembly 2, wherein the rotor assembly 1 includes an outer casing 11 and a front shaft cover 12, one end of the front shaft cover 12 is connected to the end face of one side of the outer casing 11, a circle of permanent magnets 111 is arranged on the inner wall of the outer casing 11, the permanent magnets 111 are annularly arranged on the outer ring of the stator assembly 2, an outer rotor output shaft sleeve 112 is connected to the output end of the outer casing 11, the stator assembly 2 includes a base flange 21, and a directional shaft rod 211 is installed at the center of the base flange 21, a plurality of stator cores 22 annularly fixed on the outer arc surface of the base flange 21, and a plurality of stator cores 22 wound on each stator core 22. The stator winding 23 is on the surface, and the rear end of the connecting base flange 21 extends to be connected to the machine cover 24. A circuit board is arranged in the machine cover 24, and the circuit board is used to drive the entire motor to operate. The reverse drive structure 3 installed on the machine cover 24 is driven by the rotor assembly 1. One end of the directional shaft 211 penetrates the connecting base flange 21 and is arranged in the outer rotor output shaft sleeve 112, and the front and rear inner walls of the outer rotor output shaft sleeve 112 are connected to the directional shaft 211 through the motor bearing 1121. The front and rear inner walls of the outer rotor output shaft sleeve 112 are installed through the motor bearing 1121, which improves the overall stability of the outer rotor motor during the driving process, and reduces the noise generated when the motor is driven by improving the stability of the connection.

[0064] The reverse drive structure 3 includes a reverse shaft rod 31 vertically installed at the center of the machine cover 24, and one end of the reverse shaft rod 31 passes through the machine cover 24, two limit strips 311 are provided on the outer arc surface of the opposite end of the reverse shaft rod 31 and the directional shaft rod 211, and one end of the driving shaft rod 32 is inserted and sleeved on the outside of the reverse shaft rod 31, and a slot matching the limit strip 311 is provided on the groove wall inside the driving shaft rod 32 and inserted with one end of the reverse shaft rod 31, and one end of the driving shaft rod 32 near the machine cover 24 is sleeved with a driving gear 321, a driving gear ring 33 fixed on the inner wall of the outer shell 11, and three auxiliary gears 34 arranged between the driving gear ring 33 and the driving gear 321, and the three auxiliary gears 34 are installed on the inner wall of the machine cover 24 through the shaft rod, and sleeved. The driving gear 321 on the driving shaft 32 is movably engaged with the three auxiliary gears 34, and the inner teeth of the driving gear ring 33 are engaged with the three auxiliary gears 34. When the outer casing 11 rotates clockwise, the driving gear ring 33 is always driven to rotate clockwise. After the driving gear 321 is aligned with the three auxiliary gears 34, the driving gear ring 33 drives the driving gear 321 and the driving shaft 32 to rotate counterclockwise through the three auxiliary gears 34. When the driving shaft 32 rotates counterclockwise, the slot on its inner wall is always engaged with the limiting insert strip 311, thereby driving the reverse shaft 31 to rotate counterclockwise, so that the motor can be driven in both directions and in reverse. It can be driven as needed, providing the motor with multiple driving ends, which are opposite to its own driving direction, to meet different driving requirements of a motor.

[0065] The directional shaft 211 and the driving shaft 32 are connected by a driving control component 4, and the driving control component 4 includes a driving sleeve 41 connected to the directional shaft 211 at one end, and the driving sleeve 41 is divided into two arc grooves by a sealing partition 411. A central tube for the two arc grooves to communicate with each other is arranged at the center of the sealing partition 411, and a solenoid valve is arranged on the central tube, and the driving control can be realized by opening and closing the solenoid valve. The opening end of the arc groove at one end of the sealing partition 411 is closed by the directional shaft 211, and the sealing A piston plate is provided in the arc groove at the other end of the sealing plate 411, and a micro air pump 42 is fixed on the machine cover 24, wherein the model of the micro air pump 42 is FAA6003, and the air pipe of the micro air pump 42 is interconnected with the arc groove located at the end of the directional shaft 211, and a control rod 43 with one end connected to the piston plate through a bearing, and one end of the control rod 43 is connected to the driving shaft 32, and is driven in different directions through the arc groove on the inner wall of the driving sleeve 41, and the drive can be adjusted as needed to achieve the flexibility of the entire drive.

[0066] Specifically, after being energized, the rotor assembly 1 and the stator assembly 2 cooperate with each other to realize the rotation of the outer housing 11, the front shaft cover 12 and the outer rotor output shaft sleeve 112, so that the entire motor is driven to rotate outwardly, and the micro air pump 42 injects gas into the arc groove at the end of the directional shaft 211 through the air pipe, and the gas is transported to the arc groove at the other end through the center tube. Under the action of air pressure, the piston plate and the control rod 43 connected thereto are driven to move, and the control rod 43 pushes the drive shaft 32 to slide on the reverse shaft 31. When the drive gear 321 on the drive shaft 32 is aligned and meshed with the three auxiliary gears 34, the drive gear ring 33 rotates clockwise through the three auxiliary gears 34 to drive the drive gear 321 and the drive shaft 32 to rotate counterclockwise, thereby driving the reverse shaft 31 to rotate counterclockwise, realizing two-way opposite drive.

[0067] Example 2

[0068] Reference Figure 1-9 , which is the second embodiment of the present invention. This embodiment is different from the first embodiment in that: a section of the directional shaft 211 located inside the outer rotor output shaft sleeve 112 is equipped with a bearing lubricating device 5, and one end of the directional shaft 211 is separated into a directional shaft a and a directional shaft b by the bearing lubricating device 5. The bearing lubricating device 5 includes a fixing ring 51 arranged between the directional shaft a and the directional shaft b. Both ends of the fixing ring 51 are sleeved on the directional shaft a and the directional shaft b through circular plates. The separation end surfaces of the directional shaft a and the directional shaft b are both extended with inner walls connected to the inner wall of the fixing ring 51. A ring plate 2111 is provided, and a left coating component 52 and a right coating component 53 are provided at both ends of the fixed ring 51. The coating ends of the left coating component 52 and the right coating component 53 are respectively connected to the end faces of the two motor bearings 1121. The left coating component 52 and the right coating component 53 are symmetrically arranged to achieve oil lubrication and maintenance of the two motor bearings 1121. The bearing lubrication device 5 can meet the automatic oil lubrication and maintenance of the internal bearings of the motor, avoid the inconvenience of manual oiling, and can automatically maintain the motor bearings 1121 regularly, reduce the damage of the motor bearings 1121, and extend the service life of the entire motor.

[0069] The left coating assembly 52 and the right coating assembly 53 located at both ends of the fixed collar 51 have the same structure and are symmetrically arranged at both ends of the fixed collar 51. The left coating assembly 52 includes an annular sleeve 521, one end of which is installed on a sealing ring plate 522 through the annular plate. An annular groove for installing the sealing ring plate 522 is provided on the circular plate. The inner and outer arc surfaces of the sealing ring plate 522 are sealed and connected to the inner wall of the annular groove through a bearing. The ejector rod 523 installed in the annular sleeve 521 is inserted and A piston is provided, one end of the ejector rod 523 is connected to the piston, and the other end of the ejector rod 523 penetrates the annular sleeve 521 and is connected to the coating brush 524. The inner and outer arc surfaces of the sealing ring plate 522 are installed through a sealing bearing to ensure that a sealed space is formed inside the annular sleeve 521. When the gas in the annular cavity a enters the annular sleeve 521, the piston drives the ejector rod 523 and the coating brush 524 to move under the action of air pressure, ensuring that the coating brush 524 is in close contact with the oil supply surface of the motor bearing 1121 to reduce oil leakage.

[0070] The center of the directional shaft 211 is provided with an air injection groove 2112, and an oil pipeline 2113 is arranged in the air injection groove 2112. One end of the air injection groove 2112 communicates with the arc groove of the directional shaft 211 through the air intake pipe, and a solenoid valve is installed on the air intake pipe. One end of the oil pipeline 2113 penetrates the directional shaft 211 and the engine cover 24 and connects with the oil intake pipe. The directional shaft a and the directional shaft b of the directional shaft 211 are connected by the oil pipeline 2113. The air injection groove 2112 communicates with the partition between the directional shaft a and the directional shaft b. The inner wall at the center of the fixed collar 51 is connected to the oil pipeline 2113 through a support plate. Two oil distribution components 6 with the same structure are symmetrically arranged on the oil pipeline 2113. The two oil distribution components 6 distribute the oil The pipeline 2113 is divided into three sections. The oil distribution component 6 includes a rotating ring 61. The two ends of the rotating ring 61 are respectively installed with ports on both sides of the oil pipeline 2113 through sealing bearings. The two ends of the rotating ring 61 are tightly connected with the oil pipeline 2113 through a sealing shaft to prevent lubricating oil leakage during the oil transportation process. The oil distribution pipe 62 is obliquely fixed on the rotating ring 61. The built-in ring plate 2111 is provided with an annular groove for the oil distribution pipe 62 to penetrate. A sealing rotating ring plate 63 is installed in the annular groove through inner and outer sealing bearings. The sealing rotating ring plate 63 is installed through inner and outer sealing bearings to ensure a sealing effect in the annular cavity a and the annular cavity b. The oil distribution pipe 62 is installed through the sealing rotating ring plate 63 and is set in the annular sleeve 521. The telescopic pipe 64 is arranged inside the housing, one end of the oil distribution pipe 62 is connected to the telescopic pipe 64, one end of the annular sleeve 521 is connected to the oil distribution pipe 62 through a support plate, an oil supply hole groove 5231 is arranged inside the ejection rod 523, an oil outlet at one end of the oil supply hole groove 5231 is arranged at the center of the coating brush 524, and the other end of the oil supply hole groove 5231 is interconnected with the telescopic pipe 64, the telescopic pipe 64 is extended when the piston drives the ejection rod 523 to move, and when the piston is reset, the telescopic pipe 64 can be retracted, and can be flexibly adjusted according to the driving needs, the built-in ring plates 2111 on the directional shaft a and the directional shaft b respectively form two sealed annular cavities between the two circular plates, and the annular cavities include annular cavity a and annular cavity b, and the built-in ring plates 2111 on the directional shaft a and the directional shaft b The cavity between 1 is an annular cavity c, which is interconnected with the gas injection groove 2112. An air distribution pipe a which is interconnected with the gas injection groove 2112 is provided on the directional shaft a, and one end of the air distribution pipe a is interconnected with the annular cavity a. An air distribution pipe b which is interconnected with the gas injection groove 2112 is provided on the directional shaft b, and one end of the air distribution pipe b is interconnected with the annular cavity b. The gas in the gas injection groove 2112 is transported to the annular cavity a and the annular cavity b respectively through the air distribution pipe a and the air distribution pipe b. The annular cavity a and the annular cavity b divide the interior of the fixed ring 51 into two sealed driving spaces. The drive adjustment of the left coating component 52 and the right coating component 53 is realized by opening and closing the air distribution pipe a and the air distribution pipe b. Through the separate bearing lubrication drive, the single motor bearing 1121 can be lubricated according to needs.Adjust according to the use of motor bearing 1121 to reduce unnecessary maintenance costs, save lubrication costs, and avoid waste of lubricating oil.

[0071] Specifically, when the motor bearing 1121 needs lubrication, the micro air pump 42 injects air into the arc groove at the end of the directional shaft 211 through the air pipe, and the air enters the air injection groove 2112 of the directional shaft 211 through the air inlet pipe. The gas in the air injection groove 2112 is respectively transported to the annular cavity a and the annular cavity b through the air distribution pipe a and the air distribution pipe b. Under the action of the air pressure in the annular cavity a and the annular cavity b, the left coating component 52 and the right coating component 53 are extended and retracted, so that the coating brushes 524 at both ends are in contact with the oil supply surface of the motor bearing 1121. When the left coating component 52 and the right coating component 53 are extended and retracted, the oil delivery pipeline 2113 is connected to the lubricating oil through the oil inlet pipeline, and the oil delivery pipeline 2113 is connected to the lubricating oil through the oil inlet pipeline. The lubricating oil inside is transported to the telescopic pipe 64 through the oil distribution pipe 62, and the telescopic pipe 64 guides the oil into the oil supply hole groove 5231. The oil supply hole groove 5231 guides the oil to the coating brush 524 through the oil outlet, and then the coating brush 524 coats the lubricating oil to the motor bearing 1121. During the oil supply process, the rotor assembly 1 can continue to operate, and the motor bearing 1121 rotates and fits with the coating brush 524 to achieve oil lubrication inside the motor bearing 1121. When oil supply is not needed, the micro air pump 42 performs reverse air pumping, and the reverse air pumping drives the coating brush 524 to reset. At the same time of pumping, the oil inlet pipeline reversely pumps oil to the oil delivery pipeline 2113.

[0072] Example 3

[0073] Reference Figure 1-14 , is the third embodiment of the present invention, which is different from the second embodiment in that: an auxiliary lubrication device 7 is provided on the bearing lubrication device 5, and the auxiliary lubrication device 7 includes an annular built-in tooth groove 71 fixed on the inner wall of the outer rotor output shaft sleeve 112, a left-direction drive component 72 and a right-direction drive component 73 symmetrically arranged on both sides of the annular built-in tooth groove 71, and a left-rotating gear 74 and a right-rotating gear 75 symmetrically arranged at both ends of the fixed collar 51, the left-rotating gear 74 and the right-rotating gear 75 are respectively connected to the directional shaft 211 through bearing sleeves, and the left-rotating gear 74 and the right-rotating gear 75 are both provided with mounting holes for the left coating component 52 and the right coating component 53 to penetrate, and the mounting holes are used to limit the left coating component 52 and the right coating component 53, when the left-rotating gear 74 and the right-rotating gear 75 rotate, they can drive the left coating component 52 and the right coating component 53 to rotate together, and the left-direction drive component 72 and the right-direction drive component 73 can respectively drive the left-rotating gear 74 and the right-rotating gear 75 to rotate.

[0074] The left split drive assembly 72 includes a mounting bracket 721 fixed to the outer end of the fixed collar 51, a U-shaped groove for accommodating the guide shaft tube 722 is provided at the upper end of the mounting bracket 721, and a rotating shaft rod 723 installed on the guide shaft tube 722 is penetrated, and the two ends of the rotating shaft rod 723 are respectively sleeved with a side gear a7231 and a side gear b7232, the side gear a7231 is movably engaged with the left rotating gear 74, the side gear b7232 is movably engaged with the annular built-in tooth groove 71, and the side gear a7231 is movably engaged with the left rotating gear 74, and ... 51, one end of the output sleeve 724 is communicated with the annular cavity c through an internal pipe, a piston is arranged in the output sleeve 724, a lifting rod 7241 is installed on the piston, one end of the lifting rod 7241 penetrates the output sleeve 724 and movably connects with the guide shaft tube 722, when the gas in the annular cavity c is transported to the output sleeve 724 through the internal pipe, the lifting rod 7241 on the piston in the output sleeve 724 is driven to push up under the action of the gas, thereby lifting one end of the guide shaft tube 722, The guide shaft tube 722 is rotated around the elastic connection component 8 to tilt it. When the guide shaft tube 722 tilts, the side gear a7231 at one end of the rotating shaft rod 723 meshes with the left rotating gear 74, and the side gear b7232 at the other end of the rotating shaft rod 723 meshes with the annular built-in tooth groove 71. The annular built-in tooth groove 71 drives the side gear b7232 to rotate clockwise, thereby driving the rotating shaft rod 723 and the side gear a7231 to rotate clockwise, and the side gear a7231 drives the left rotating gear 74 to rotate counterclockwise. The left coating component 52 rotates counterclockwise, thereby driving the coating brush 524 to rotate counterclockwise, so that the coating brush 524 and the motor bearing 1121 move in the opposite direction. The coating brush 524 and the motor bearing 1121 rotate in the opposite direction to give each other a reverse friction force, so that the lubricating oil on the coating brush 524 can be evenly coated on the motor bearing 1121. Under the action of the reverse rotation, the lubricating oil can be quickly swept into the inside of the motor bearing 1121 by the coating brush 524, thereby reducing the waste of lubricating oil caused by the lubricating oil flowing out of the motor bearing 1121.

[0075] The two ends of the guide shaft tube 722 located in the U-shaped groove are connected to the mounting bracket 721 through an elastic connection component 8. The elastic connection component 8 includes an outer fixed ring sleeve a81 and an outer fixed ring sleeve b82 fixed on the inner walls of both sides of the U-shaped groove, and a rotating ring sleeve a83 and a rotating ring sleeve b84 symmetrically and vertically installed on both sides of the guide shaft tube 722. The outer fixed ring sleeve a81 and the rotating ring sleeve a83 are both provided with hole grooves for installing the limiting shaft rod a85, and the outer fixed ring sleeve b82 and the rotating ring sleeve b84 are both provided with hole grooves for installing the limiting shaft rod b86. The outer walls of the limiting shaft a85 and the limiting shaft b86 are both sleeved with torsion springs 851. When oil is not needed, the two torsion springs 851 use elastic force to limit the rotating ring sleeve a83 and the rotating ring sleeve b84. In the absence of forced driving by external force, the guide shaft tube 722 is guaranteed to be in a horizontal state, and the internal rotating shaft 723 and the guide shaft tube 722 are in the same horizontal state, so that the side gear a7231 and the side gear b7232 do not contact the left rotating gear 74 and the annular built-in tooth groove 71 when not driven, so as to avoid affecting the normal operation of the motor.

[0076] Specifically, during the oil supply process, the gas in the annular chamber c is transported to the output sleeve 724 through the internal pipe. Under the action of the gas, the lifting rod 7241 on the piston in the output sleeve 724 is driven to push up, thereby lifting one end of the guide shaft tube 722, so that the guide shaft tube 722 rotates around the elastic connection component 8 to make it tilt. When the guide shaft tube 722 tilts, the side gear a7231 at one end of the rotating shaft rod 723 meshes with the left rotating gear 74, and the side gear b7232 at the other end of the rotating shaft rod 723 meshes with the annular built-in tooth groove 71. The annular built-in tooth groove 71 drives the side gear b7232 to rotate clockwise, thereby driving the rotating shaft rod 723 and the side gear a7231 to rotate clockwise, and the side gear a7231 drives the left rotating gear 74. The rotating gear 74 rotates counterclockwise, thereby driving the left coating component 52 to rotate counterclockwise, realizing the reverse movement of the coating brush 524 and the motor bearing 1121, and lubricating with oil during the reverse movement. When the right coating component 53 needs to be rotated and oiled, the driving process is the same as above. When oiling is not required, the micro air pump 42 performs reverse air extraction, and the piston in the output sleeve 724 and the lifting rod 7241 are reset. The two sides of the guide shaft tube 722 are reset under the action of the torsion spring 851. When no oil is supplied, the torsion of the torsion spring 851 ensures that the guide shaft tube 722 is in a horizontal state in the initial state, and the side gears a7231 and b7232 at both ends of the rotating shaft rod 723 are not in contact with the left rotating gear 74 and the annular built-in tooth groove 71.

[0077] Another object of the present invention is to provide a method for using an outer rotor brushless blower motor, the purpose of which is that the motor can increase its drive end according to demand and realize two-way opposite drive, and can automatically and evenly lubricate the bearings.

[0078] Example 4

[0079] Reference Figure 1-14 , which is a fourth embodiment of the present invention, provides: a method for using an outer rotor brushless blower motor, comprising the following steps,

[0080] After being energized, the rotor assembly 1 and the stator assembly 2 cooperate with each other to realize the rotation of the outer housing 11, the front shaft cover 12 and the outer rotor output shaft sleeve 112, so that the entire motor is driven to rotate outward;

[0081] The micro air pump 42 injects gas into the arc groove at the end of the directional shaft 211 through the air pipe, and the gas is transported to the arc groove at the other end through the central tube. Under the action of air pressure, the piston plate and the control rod 43 connected thereto are driven to move, and the control rod 43 pushes the driving shaft 32 to slide on the reverse shaft 31. When the driving gear 321 on the driving shaft 32 is aligned and meshed with the three auxiliary gears 34, the driving gear ring 33 rotates clockwise through the three auxiliary gears 34 to drive the driving gear 321 and the driving shaft 32 to rotate counterclockwise, thereby driving the reverse shaft 31 to rotate counterclockwise, thereby realizing bidirectional opposite drive.

[0082] When the motor bearing 1121 needs lubrication, the micro air pump 42 injects air into the arc groove at the end of the directional shaft 211 through the air pipe, and the gas enters the air injection groove 2112 of the directional shaft 211 through the air inlet pipe. The gas in the air injection groove 2112 is respectively transported to the annular cavity a and the annular cavity b through the air distribution pipe a and the air distribution pipe b. Under the action of air pressure, the left coating component 52 and the right coating component 53 in the annular cavity a and the annular cavity b are expanded and contracted, so that the coating brushes 524 at both ends are in contact with the oil supply surface of the motor bearing 1121. When the left coating component 52 and the right coating component 53 are expanded and contracted, the oil pipeline 2113 is connected to the lubricating oil through the oil inlet pipeline, and the oil in the oil pipeline 2113 The lubricating oil is transported to the telescopic pipe 64 through the oil distribution pipe 62, and the telescopic pipe 64 guides the oil into the oil supply hole groove 5231. The oil supply hole groove 5231 guides the oil into the coating brush 524 through the oil outlet, and then the coating brush 524 coats the lubricating oil on the motor bearing 1121. During the oil supply process, the rotor assembly 1 can continue to operate, and the motor bearing 1121 rotates and fits with the coating brush 524 to achieve oil supply and lubrication inside the motor bearing 1121. When oil supply is not needed, the micro air pump 42 performs reverse air extraction, and the reverse air extraction drives the coating brush 524 to reset. At the same time of air extraction, the oil inlet pipeline reversely extracts oil from the oil delivery pipeline 2113;

[0083] During the oil supply process, the gas in the annular cavity c is transported to the output sleeve 724 through the internal pipe. Under the action of the gas, the lifting rod 7241 on the piston in the output sleeve 724 is driven to push up, thereby lifting one end of the guide shaft tube 722, so that the guide shaft tube 722 rotates around the elastic connection component 8 to make it inclined. When the guide shaft tube 722 is inclined, the side gear a7231 at one end of the rotating shaft rod 723 meshes with the left rotating gear 74, and the side gear b7232 at the other end of the rotating shaft rod 723 meshes with the annular built-in tooth groove 71. The annular built-in tooth groove 71 drives the side gear b7232 to rotate clockwise, thereby driving the rotating shaft rod 723 and the side gear a7231 to rotate clockwise, and the side gear a7231 drives the left rotating gear 74 to rotate counterclockwise, thereby driving the left coating component 52 to rotate counterclockwise, realizing the reverse movement of the coating brush 524 and the motor bearing 1121, and lubricating the oil while moving in the reverse direction;

[0084] When the right coating assembly 53 needs to be rotated and oiled, the driving process is the same as above;

[0085] When oil is not needed, the micro air pump 42 performs reverse air pumping, the piston in the output sleeve 724 and the lifting rod 7241 are reset, and both sides of the guide shaft tube 722 are reset under the action of the torsion spring 851. When oil is not supplied, the torsion force of the torsion spring 851 ensures that the guide shaft tube 722 is in a horizontal state in the initial state, and the side gears a7231 and b7232 at both ends of the rotating shaft rod 723 are not in contact with the left rotating gear 74 and the annular built-in tooth groove 71.

[0086] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An outer rotor brushless fan motor, comprising a rotor assembly (1) and a stator assembly (2), characterized in that: The rotor assembly (1) comprises an outer casing (11) and a front shaft cover (12); one end of the front shaft cover (12) is connected to an end surface of one side of the outer casing (11); a circle of permanent magnets (111) is arranged on the inner wall of the outer casing (11); the permanent magnets (111) are arranged in an annular shape on the outer ring of the stator assembly (2); and the output end of the outer casing (11) is connected to an outer rotor output shaft sleeve (112); The stator assembly (2) comprises a base flange (21), a directional shaft (211) is installed at the center of the base flange (21), a plurality of stator cores (22) annularly fixed on the outer arc surface of the base flange (21), and a stator winding (23) wound on the surface of each stator core (22), the base flange (21) is extended at the rear end to be connected to a cover (24), and a reverse drive structure (3) installed on the cover (24) is driven by the rotor assembly (1); One end of the directional shaft rod (211) penetrates the machine base flange (21) and is disposed in the outer rotor output shaft sleeve (112), and the front and rear inner walls of the outer rotor output shaft sleeve (112) are connected to the directional shaft rod (211) via the motor bearing (1121); The reverse drive structure (3) comprises a reverse shaft (31) vertically mounted at the center of the machine cover (24), one end of the reverse shaft (31) passes through the machine cover (24), two limit inserts (311) are provided on the outer arc surface of the opposite end of the reverse shaft (31) and the directional shaft (211), one end of a driving shaft (32) is inserted and sleeved on the outside of the reverse shaft (31), a slot matching the limit insert (311) is provided on the groove wall inside the driving shaft (32) and inserted with one end of the reverse shaft (31), one end of the driving shaft (32) is sleeved with a driving gear (321), a driving gear ring (33) fixed to the inner wall of the outer housing (11), and three auxiliary gears (34) arranged between the driving gear ring (33) and the driving gear (321), and the three auxiliary gears (34) are mounted on the inner wall of the machine cover (24) through the shaft; The driving gear (321) sleeved on the driving shaft (32) is movably meshed with the three auxiliary gears (34), and the inner teeth of the driving gear ring (33) are meshed with the three auxiliary gears (34); The directional shaft (211) and the driving shaft (32) are connected by a driving control assembly (4). The driving control assembly (4) comprises a driving sleeve (41) connected to the directional shaft (211) at one end. The driving sleeve (41) is divided into two arc grooves by a sealing partition (411). A central tube for communicating the two arc grooves is arranged at the center of the sealing partition (411). The opening end of the arc groove at one end of the sealing partition (411) is closed by the directional shaft (211). A piston plate is arranged in the arc groove at the other end of the sealing partition (411). A micro air pump (42) is fixed on the cover (24). The air pipe of the micro air pump (42) communicates with the arc groove at the end of the directional shaft (211). A control rod (43) is connected to the piston plate at one end through a bearing. One end of the control rod (43) is connected to the driving shaft (32).

2. The outer rotor brushless blower motor according to claim 1, characterized in that: A bearing lubrication device (5) is installed on a section of an oriented shaft (211) located inside the outer rotor output shaft sleeve (112); one end of the oriented shaft (211) is separated into an oriented shaft a and an oriented shaft b by the bearing lubrication device (5); the bearing lubrication device (5) comprises a fixing collar (51) arranged between the oriented shaft a and the oriented shaft b; both ends of the fixing collar (51) are sleeved on the oriented shaft a and the oriented shaft b via circular plates; the separating end surfaces of the oriented shaft a and the oriented shaft b are both extended with built-in ring plates (2111) connected to the inner wall of the fixing collar (51); a left coating component (52) and a right coating component (53) are arranged at both ends of the fixing collar (51); the coating ends of the left coating component (52) and the right coating component (53) are respectively in contact with the end surfaces of two motor bearings (1121).

3. The outer rotor brushless blower motor according to claim 2, characterized in that: The left coating assembly (52) and the right coating assembly (53) located at the two ends of the fixed collar (51) have the same structure and are symmetrically arranged at the two ends of the fixed collar (51). The left coating assembly (52) comprises an annular sleeve (521), one end of which is installed through the sealing ring plate (522). The circular plate is provided with an annular groove for installing the sealing ring plate (522). The inner and outer arc surfaces of the sealing ring plate (522) are sealedly connected to the inner wall of the annular groove through a bearing. An ejector rod (523) is inserted and installed in the annular sleeve (521). A piston is arranged in the annular sleeve (521). One end of the ejector rod (523) is connected to the piston, and the other end of the ejector rod (523) penetrates the annular sleeve (521) and is connected to a coating brush (524).

4. The outer rotor brushless blower motor according to claim 3, characterized in that: An air injection groove (2112) is provided at the center of the directional shaft (211), an oil pipeline (2113) is arranged in the air injection groove (2112), one end of the air injection groove (2112) is communicated with the arc groove of the directional shaft (211) through the air intake pipe, a solenoid valve is installed on the air intake pipe, one end of the oil pipeline (2113) penetrates the directional shaft (211) and the engine cover (24) and is connected with the oil intake pipe, the directional shaft a and the directional shaft b of the directional shaft (211) are connected by the oil pipeline (2113), the air injection groove (2112) is communicated with the partition between the directional shaft a and the directional shaft b, and the inner wall at the center of the fixed collar (51) is connected with the oil pipeline (2113) through a support plate; Two oil separation components (6) with the same structure are symmetrically arranged on the oil pipeline (2113), and the two oil separation components (6) divide the oil pipeline (2113) into three sections; The oil distribution assembly (6) comprises a rotating ring (61), two ends of the rotating ring (61) are respectively installed at two side ports of a portion separated from the oil pipeline (2113) by means of a sealing bearing, an oil distribution pipe (62) is obliquely fixed on the rotating ring (61), an annular groove for the oil distribution pipe (62) to penetrate is provided on the built-in ring plate (2111), a sealing rotating ring plate (63) is installed in the annular groove via inner and outer sealing bearings, the oil distribution pipe (62) is installed through the sealing rotating ring plate (63), and a telescopic pipe (64) is arranged in the annular sleeve (521), one end of the oil distribution pipe (62) is connected to the telescopic pipe (64), and one end of the annular sleeve (521) is connected to the oil distribution pipe (62) via a support plate; An oil supply hole groove (5231) is provided in the ejector rod (523); an oil outlet at one end of the oil supply hole groove (5231) is opened at the center of the coating brush (524); and the other end of the oil supply hole groove (5231) is communicated with the telescopic pipe (64); The built-in ring plates (2111) on the directional shaft a and the directional shaft b respectively form two sealed annular cavities between the two circular plates, and the annular cavities include annular cavity a and annular cavity b. The cavity between the built-in ring plates (2111) on the directional shaft a and the directional shaft b is annular cavity c, and the annular cavity c is interconnected with the gas injection groove (2112). The directional shaft a is provided with an air distribution pipe a that is interconnected with the gas injection groove (2112), and one end of the air distribution pipe a is interconnected with the annular cavity a. The directional shaft b is provided with an air distribution pipe b that is interconnected with the gas injection groove (2112), and one end of the air distribution pipe b is interconnected with the annular cavity b.

5. The outer rotor brushless blower motor according to claim 4, characterized in that: The bearing lubrication device (5) is provided with an auxiliary lubrication device (7), the auxiliary lubrication device (7) comprising an annular built-in tooth groove (71) fixed on the inner wall of the outer rotor output shaft sleeve (112), a left-direction drive assembly (72) and a right-direction drive assembly (73) symmetrically arranged on both sides of the annular built-in tooth groove (71), and a left-rotating gear (74) and a right-rotating gear (75) symmetrically arranged at both ends of the fixed collar (51), the left-rotating gear (74) and the right-rotating gear (75) being respectively connected to the directional shaft (211) via bearing sleeves, and the left-rotating gear (74) and the right-rotating gear (75) are both provided with mounting holes for the left coating assembly (52) and the right coating assembly (53) to penetrate.

6. The outer rotor brushless blower motor according to claim 5, characterized in that: The left-direction split drive assembly (72) comprises a mounting bracket (721) fixed to the outer end of the fixed collar (51); a U-shaped groove for accommodating a guide shaft tube (722) is provided at the upper end of the mounting bracket (721); a rotating shaft rod (723) installed on the guide shaft tube (722) passes through the rotating shaft rod (723); two ends of the rotating shaft rod (723) are respectively sleeved with a side gear a (7231) and a side gear b (7232); the side gear a (7231) and the left rotating gear ( 74) is movably engaged, the side gear b (7232) is movably engaged with the annular built-in tooth groove (71), and an output sleeve (724) is installed on the outer wall of the fixed sleeve (51), one end of the output sleeve (724) is communicated with the annular cavity c through an internal pipe, a piston is arranged in the output sleeve (724), a lifting rod (7241) is installed on the piston, and one end of the lifting rod (7241) penetrates the output sleeve (724) and is movably connected to the guide shaft tube (722).

7. The outer rotor brushless blower motor according to claim 6, characterized in that: The two ends of the guide shaft tube (722) located in the U-shaped groove are connected to the mounting bracket (721) through an elastic connection component (8). The elastic connection component (8) includes an outer fixed ring sleeve a (81) and an outer fixed ring sleeve b (82) fixed on the inner walls of both sides of the U-shaped groove, and a rotating ring sleeve a (83) and a rotating ring sleeve b (84) symmetrically and vertically mounted on both sides of the guide shaft tube (722). The outer fixed ring sleeve a (81) and the rotating ring sleeve a (83) are both provided with a hole groove for installing a limit shaft rod a (85). The outer fixed ring sleeve b (82) and the rotating ring sleeve b (84) are both provided with a hole groove for installing a limit shaft rod b (86). The outer walls of the limit shaft rod a (85) and the limit shaft rod b (86) are both sleeved with a torsion spring (851).

8. A method for using an outer rotor brushless blower motor, which is applied to the outer rotor brushless blower motor as claimed in claim 7, characterized in that: The following steps are included: After power is supplied, the rotor assembly (1) and the stator assembly (2) cooperate with each other to realize the rotation of the outer housing (11), the front shaft cover (12) and the outer rotor output shaft sleeve (112), thereby driving the entire motor to rotate outward; The micro air pump (42) injects gas into the arc groove at the end of the directional shaft (211) through the air pipe, and the gas is transported to the arc groove at the other end through the central tube. Under the action of the air pressure, the piston plate and the control rod (43) connected thereto are driven to move. The control rod (43) pushes the driving shaft (32) to slide on the reverse shaft (31). When the driving gear (321) on the driving shaft (32) is aligned and meshed with the three auxiliary gears (34), the driving gear ring (33) rotates clockwise through the three auxiliary gears (34) to drive the driving gear (321) and the driving shaft (32) to rotate counterclockwise, thereby driving the reverse shaft (31) to rotate counterclockwise, thereby realizing bidirectional opposite drive. When the motor bearing (1121) needs to be lubricated, the micro air pump (42) injects air into the arc groove at the end of the directional shaft (211) through the air pipe, and the air enters the air injection groove (2112) of the directional shaft (211) through the air inlet pipe. The air in the air injection groove (2112) is transported to the annular cavity a and the annular cavity b respectively through the air distribution pipe a and the air distribution pipe b. Under the action of the air pressure in the annular cavity a and the annular cavity b, the left coating component (52) and the right coating component (53) are extended and retracted, so that the coating brushes (524) at both ends contact the oil supply surface of the motor bearing (1121). While the left coating component (52) and the right coating component (53) are extended and retracted, the oil delivery pipeline (2113) is connected to the lubricating oil through the oil inlet pipeline, and the lubricating oil in the oil delivery pipeline (2113) is retracted and retracted. The lubricating oil is transported to the telescopic pipe (64) through the oil distribution pipe (62), the telescopic pipe (64) guides the oil into the oil supply hole groove (5231), the oil supply hole groove (5231) guides the oil into the coating brush (524) through the oil outlet, and the coating brush (524) coats the lubricating oil onto the motor bearing (1121). During the oil supply process, the rotor assembly (1) can continue to operate, and the motor bearing (1121) rotates and fits with the coating brush (524) during the rotation process, so that the motor bearing (1121) is lubricated internally. When oil supply is not needed, the micro air pump (42) performs reverse air extraction, and the reverse air extraction drives the coating brush (524) to reset. While the air is being extracted, the oil inlet pipe reversely extracts oil from the oil delivery pipe (2113); During the oil supply process, the gas in the annular chamber c is transported to the output sleeve (724) through the inner pipe. Under the action of the gas, the lifting rod (7241) on the piston in the output sleeve (724) is driven upward, thereby lifting one end of the guide shaft tube (722) so that the guide shaft tube (722) rotates around the elastic connection component (8) to tilt. When the guide shaft tube (722) tilts, the gear a (7231) on one end of the rotating shaft rod (723) meshes with the left rotating gear (74), and the other end of the rotating shaft rod (723) is engaged with the left rotating gear (74). The side gear b (7232) is meshed with the annular built-in tooth groove (71), and the annular built-in tooth groove (71) drives the side gear b (7232) to rotate clockwise, thereby driving the rotating shaft (723) and the side gear a (7231) to rotate clockwise, and the side gear a (7231) drives the left rotating gear (74) to rotate counterclockwise, thereby driving the left coating component (52) to rotate counterclockwise, thereby achieving reverse movement of the coating brush (524) and the motor bearing (1121), and lubricating oil is supplied during the reverse movement; When the right coating assembly (53) needs to be rotated and lubricated, the driving process is the same as above; When oil supply is not required, the micro air pump (42) performs reverse air extraction, the piston in the output sleeve (724) and the lifting rod (7241) are reset, and both sides of the guide shaft tube (722) are reset under the action of the torsion spring (851). When oil supply is not required, the torsion force of the torsion spring (851) ensures that the guide shaft tube (722) is in a horizontal state in the initial state, and the side gear a (7231) and the side gear b (7232) at both ends of the rotating shaft rod (723) are not in contact with the left rotating gear (74) and the annular built-in tooth groove (71).

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