High-precision brushless motor

Abstract

The invention discloses a high-precision brushless motor, and relates to the field of brushless motors, the high-precision brushless motor comprises a shell, a stator is fixed in the shell, a rotor is arranged in the stator, two ends of the rotor are rotatably connected with bearings, the shell is provided with an active lubrication noise reduction mechanism, the active lubrication noise reduction mechanism corresponds to the bearings, and the active lubrication noise reduction mechanism is connected with a motor. And an extrusion stabilizing mechanism is arranged on the bearing. The active lubrication noise reduction mechanism monitors noise generated by rotation of the two bearings, when the bearings lack lubrication and generate large noise, the active lubrication noise reduction mechanism injects lubricating oil to the bearings, the bearings are lubricated through the lubricating oil, and meanwhile the active lubrication noise reduction mechanism drives the extrusion stabilizing mechanism; the extrusion stabilizing mechanism limits injection of the active lubrication noise reduction mechanism, so that when the brushless motor works, generated noise can be reduced, the frequency of maintaining the brushless motor is reduced, and the service life of the brushless motor is prolonged.

Description

Technical Field

[0001] The present application relates to the field of brushless motors, and in particular to a high-precision brushless motor. Background Art

[0002] As a highly efficient and reliable power device, brushless motors have been widely used in many industrial and civilian fields. Traditional brushless motors usually achieve continuous rotation of the rotor through an electronic commutator and have the advantages of simple structure and easy maintenance.

[0003] The brushless motor consists of key components such as the casing, stator, rotor and bearings. The stator is composed of cast steel laminations, and the windings are placed in slots axially cut along the inner circumference. The rotor is usually composed of permanent magnets and can be an outer rotor type or an inner rotor type. The outer rotor type motor attaches the magnet to the casing, while the inner rotor type motor places the magnet in the center. The permanent magnet of the rotor is usually made of neodymium iron boron material, which interacts with the rotating magnetic field of the stator to make the rotor rotate with the support of the bearing.

[0004] When the brushless motor is working, the main source of noise is the sound of the bearing supporting the rotation of the rotor. In order to reduce the noise generated by the bearing, lubricating oil is generally added to the bearing to reduce the noise generated by the bearing rotation. During long-term use, external dust enters the bearing, and the bearing comes into contact with the air. This will cause the lubricating oil in the bearing to decrease, causing noise in the bearing, affecting the service life of the bearing, and requiring regular maintenance, which is more troublesome. Summary of the invention

[0005] The purpose of the present application is to solve the problem raised in the above background technology that during long-term use, external dust enters the bearings, the bearings come into contact with the air, etc., which will lead to a reduction in the lubricating oil in the bearings, causing noise in the bearings, affecting the service life of the bearings, and requiring troublesome regular maintenance. The present application provides a high-precision brushless motor.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions: A high-precision brushless motor comprises a shell, a stator is fixed in the shell, a rotor is arranged in the stator, both ends of the rotor are rotatably connected with bearings, the bearings are fixedly connected to the shell, a position sensor is installed on the rotor, an active lubrication and noise reduction mechanism is arranged on the shell, the active lubrication and noise reduction mechanism corresponds to the bearing, and an extrusion stabilization mechanism is arranged on the bearing.

[0007] By adopting the above technical solution, the active lubrication noise reduction mechanism monitors the noise of the two bearings rotating. When the bearings are used for a long time, dust enters the bearings, the bearings lack lubrication and generate loud noise, then the active lubrication noise reduction mechanism injects lubricating oil into the bearings to lubricate the bearings. At the same time, when the active lubrication noise reduction mechanism injects lubricating oil, the active lubrication noise reduction mechanism drives the extrusion stabilization mechanism, and the extrusion stabilization mechanism limits the injection of the active lubrication noise reduction mechanism, thereby reducing the noise generated when the brushless motor is working, reducing the number of maintenance times for the brushless motor, and increasing the service life of the brushless motor.

[0008] Furthermore, the active lubrication and noise reduction mechanism includes a protective shell fixed on the shell, the protective shell passes through the shell, an oil pot is fixed in the protective shell, an injection assembly is arranged in the protective shell, a battery is fixed in the protective shell, and a control module is fixed in the protective shell.

[0009] By adopting the above technical solution, when the bearing needs to be lubricated, a part of the lubricating oil in the oil pot enters the injection assembly, and then under the control of the control module, the lubricating oil in the injection assembly is injected into the bearing, so that the lubricating oil lubricates the bearing, so that the bearing can be lubricated in time when the motor is working, reducing the loud noise generated when the bearing supports the rotation of the rotor, reducing the number of maintenance times for the motor, and increasing the service life of the motor.

[0010] Furthermore, the injection assembly includes an electric telescopic rod fixed in a protective shell, a plug is fixed to the telescopic end of the electric telescopic rod, a feeding tube is fixed in the protective shell, the plug is located in the feeding tube and is slidably connected to the feeding tube, an injection tube is fixed on the protective shell, the injection tube passes through the protective shell, and is connected to the feeding tube.

[0011] By adopting the above technical solution, the telescopic end of the electric telescopic rod drives the plug to move in the feeding pipe, so that the lubricating oil in the oil pot is sucked into the feeding pipe, and then the lubricating oil in the feeding pipe is pushed into the injection tube under the push of the plug, and then the lubricating oil is injected from the injection tube into the bearing, so that the lubricating oil in the oil pot can be easily moved to the bearing, so that the lubricating oil can lubricate the bearing.

[0012] Furthermore, a one-way valve 1 is fixed between the oil pot and the feeding pipe, and a one-way valve 2 is fixed between the feeding pipe and the injection pipe.

[0013] By adopting the above technical solution, the lubricating oil is allowed to pass through the one-way valve 1 into the feeding pipe, and at the same time, the one-way valve 2 blocks the injection tube to prevent air from entering the feeding pipe. Then, the electric telescopic rod drives the plug to squeeze the lubricating oil in the feeding pipe, and the one-way valve 1 blocks the lubricating oil from returning to the oil pot, so that the feeding pipe can easily suck the lubricating oil in the oil pot, and then push the lubricating oil into the injection tube.

[0014] Furthermore, a noise sensor is fixed in the protective shell, a noise sensor head is fixed on the noise sensor, and the noise sensor head passes through the protective shell and is located on one side of the bearing.

[0015] By adopting the above technical solution, the noise sensor head on the noise sensor monitors the noise near the bearing. When the bearing generates a large noise, the noise sensor head detects the noise, and then the noise sensor transmits the data to the control module, so that timely feedback can be given to the noise generated by the bearing and the bearing can be lubricated with lubricating oil in time.

[0016] Furthermore, an air intake valve is fixed on the oil pot, and the air intake valve passes through the protective shell.

[0017] By adopting the above technical solution, the oil filling port of the oil pot is sealed with a rubber plug. When the feeding pipe sucks the lubricating oil in the oil pot, outside air enters the oil pot through the air intake valve, thereby reducing the possibility of the feeding pipe sucking the lubricating oil and the suction being blocked.

[0018] Furthermore, the extrusion stabilization mechanism includes an extrusion plate arranged on one side of the injection tube, the extrusion plate is fixedly connected to the injection tube, support rods 2 are fixed at both ends of the extrusion plate, support rods 1 are slidably connected to support rods 2, a support spring is arranged between support rods 2 and support rods 1, both ends of the support spring are fixedly connected to support rods 1 and 2, and an extrusion assembly is arranged between the extrusion plate and the plug.

[0019] By adopting the above technical solution, the side of the plug away from the lubricating oil drives the extrusion assembly, the extrusion assembly pushes the extrusion plate, the extrusion plate pushes the support rod two, the support rod two slides on the support rod one, and the extrusion plate drives the injection tube to contact the bearing, so that the lubricating oil in the injection tube can contact the bearing, reducing the possibility of the lubricating oil dripping to other locations, and at the same time reducing the possibility of the injection tube affecting the normal rotation of the bearing.

[0020] Furthermore, the extrusion assembly includes an extrusion rod 1 fixed on the plug, an extrusion rod 2 is fixed on the extrusion rod 1, a movable groove is provided on the protective shell, the extrusion rod 2 passes through the movable groove, and an extrusion bevel block is provided at the end of the extrusion rod 2 away from the extrusion rod 1, the extrusion bevel block is fixedly connected to the extrusion plate, and the inclined surface of the extrusion bevel block conflicts with the extrusion rod 2.

[0021] By adopting the above technical solution, when the plug squeezes the lubricating oil in the feeding pipe under the action of the electric telescopic rod, the plug drives the extrusion rod one, the extrusion rod one drives the extrusion rod two, the extrusion rod two contacts the inclined surface of the extrusion inclined block, and the extrusion inclined block pushes the extrusion rod, so that the extrusion plate can easily drive the injection tube to contact the bearing under the support of the support rods one and two, thereby improving the efficiency of injecting the lubricating oil into the bearing.

[0022] In summary, the present application includes at least one of the following beneficial effects: 1. The present application monitors the noise of the two bearings rotating by allowing the noise sensor head on the noise sensor. When the bearings are used for a long time, dust enters the bearings, the bearings lack lubrication, and a large noise is generated, the noise sensor head monitors the noise, and then the noise sensor transmits the data to the control module. The control module controls the electric telescopic rod to work, and the telescopic end of the electric telescopic rod drives the plug, and the plug moves in the feeding pipe, so that the lubricating oil in the oil pot is sucked into the feeding pipe, and then the lubricating oil in the feeding pipe is pushed into the injection tube under the push of the plug, and then the lubricating oil is injected from the injection tube into the bearings, so that the lubricating oil lubricates the bearings, thereby achieving the purpose of reducing the noise generated by the brushless motor when it is working, facilitating automatic addition of lubricating oil according to the degree of noise generated, reducing the number of maintenance of the brushless motor, and increasing the service life of the brushless motor.

[0023] 2. In the present application, the plug drives the extrusion rod 1, and the extrusion rod 1 drives the extrusion rod 2, so that the extrusion rod 2 moves in the movable groove of the protective shell, and then the extrusion rod 2 contacts the inclined surface of the extrusion inclined block, and the extrusion inclined block pushes the extrusion rod, so that the extrusion plate moves under the support of the support rod 1 and the support rod 2, and the extrusion plate drives the injection tube close to the bearing. When the injection of the lubricating oil is completed, the plug is reset to allow the feeding tube to be re-sucked full of lubricating oil. Under the push of the support spring, the extrusion plate is kept away from the bearing, and the injection tube is kept at a distance from the bearing, so as to facilitate the next injection of lubricating oil to the bearing, thereby achieving the purpose of enabling the lubricating oil in the injection tube to contact with the bearing, improving the efficiency of the contact between the lubricating oil and the bearing, reducing the possibility of the lubricating oil dripping on other positions, and reducing the possibility of the injection tube affecting the normal rotation of the bearing.

[0024] 3. In the present application, when the telescopic end of the electric telescopic rod drives the plug to retract, the lubricating oil passes through the one-way valve 1 and enters the feeding pipe, and at the same time, the one-way valve 2 blocks the injection tube to prevent air from entering the feeding pipe. Then, the electric telescopic rod drives the plug to squeeze the lubricating oil in the feeding tube, and the one-way valve 1 blocks the lubricating oil from returning to the oil pot. Then, the lubricating oil passes through the one-way valve 2 and enters the injection tube, thereby achieving the purpose of allowing the feeding tube to easily suck the lubricating oil in the oil pot and then push the lubricating oil into the injection tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a first three-dimensional structural schematic diagram of the high-precision brushless motor in this application; Figure 2 It is a second three-dimensional structural schematic diagram of the high-precision brushless motor in this application; Figure 3 It is a third three-dimensional structural schematic diagram of the high-precision brushless motor in the present application; Figure 4 It is a partial structural schematic diagram of the high-precision brushless motor in this application; Figure 5 This application Figure 2 The enlarged schematic diagram at A in the middle; Figure 6 This application Figure 3 Enlarged schematic diagram of point B in the middle.

[0026] Description of reference numerals: 1. Shell; 2. Stator; 3. Rotor; 4. Bearing; 5. Position sensor; 6. Active lubrication and noise reduction mechanism; 61. Protective shell; 62. Oil can; 63. Injection assembly; 631. Electric telescopic rod; 632. Plug; 633. Feed pipe; 634. Injection pipe; 635. One-way valve 1; 636. One-way valve 2; 64. Battery; 65. Noise sensor; 66. Noise sensor head; 67. Control module; 68. Intake valve; 7. Extrusion stabilization mechanism; 71. Extrusion plate; 72. Support rod 1; 73. Support rod 2; 74. Support spring; 75. Extrusion assembly; 751. Extrusion rod 1; 752. Movable groove; 753. Extrusion rod 2; 754. Extrusion bevel block. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1 —6 Provide further details of this application.

[0028] The embodiment of the present application discloses a high-precision brushless motor.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A high-precision brushless motor includes a shell 1, a stator 2 is fixed in the shell 1, a rotor 3 is arranged in the stator 2, both ends of the rotor 3 are rotatably connected with bearings 4, the bearing 4 is fixedly connected to the shell 1, a position sensor 5 is installed on the rotor 3, an active lubrication and noise reduction mechanism 6 is arranged on the shell 1, the active lubrication and noise reduction mechanism 6 corresponds to the bearing 4, and an extrusion stabilization mechanism 7 is arranged on the bearing 4.

[0030] The stator 2 is fixed to the inner wall of the housing 1 and is formed by stacking multiple layers of silicon steel sheets. Multi-phase coils are wound on the surface and the coils are separated by insulating materials. The rotor 3 is located inside the stator 2 and is composed of permanent magnets. The permanent magnets are attached to the outer circumference of the rotor 3 core. Bearings 4 are installed at both ends of the motor housing 1 to support the rotor 3 axis and ensure the coaxiality and running stability of the rotor 3. First, the brushless motor is energized to allow the stator 2 on the brushless motor to generate a magnetic field according to the law. Under the action of the magnetic field, the rotor 3 starts to rotate with the support of the two bearings 4 of the outer shell. At the same time, the position sensor 5 installed on the rotor 3 monitors the position of the rotor 3 in real time to improve the control accuracy of the brushless motor. At the same time, the layout of the motor stator 2 winding is optimized to reduce the uneven distribution of the magnetic flux and reduce the vibration and noise of the motor. At the same time, the active lubrication and noise reduction mechanism 6 monitors the noise of the two bearings 4 when they rotate. When the bearings 4 are used for a long time, dust enters the bearings 4, and the bearings 4 When there is a lack of lubrication and a loud noise is generated, the active lubrication and noise reduction mechanism 6 injects lubricating oil into the bearing 4 to lubricate the bearing 4. At the same time, when the active lubrication and noise reduction mechanism 6 injects lubricating oil, the active lubrication and noise reduction mechanism 6 drives the extrusion stabilization mechanism 7, and the extrusion stabilization mechanism 7 limits the injection of the active lubrication and noise reduction mechanism 6 to make the injection area close to the bearing 4. After completing one injection, the active lubrication and noise reduction mechanism 6 and the extrusion stabilization mechanism 7 are reset, and then the active lubrication and noise reduction mechanism 6 continues to monitor the noise of the rotation of the bearing 4. When the bearing 4 makes noise again, the bearing 4 is lubricated again. By using the active lubrication and noise reduction mechanism 6 to monitor the bearing 4, when the bearing 4 makes a loud noise, the lubricating oil is actively injected into the bearing 4, so that the noise generated by the brushless motor when it is working can be reduced, the number of maintenance of the brushless motor can be reduced, and the service life of the brushless motor can be increased.

[0031] Reference Figure 2 , Figure 4 and Figure 5 The active lubrication and noise reduction mechanism 6 includes a protective shell 61 fixed on the shell 1, the protective shell 61 penetrates the shell 1, an oil pot 62 is fixed in the protective shell 61, an injection assembly 63 is arranged in the protective shell 61, a battery 64 is fixed in the protective shell 61, and a control module 67 is fixed in the protective shell 61.

[0032] When using the brushless motor, first fill the oil pot 62 with lubricating oil, then plug the oil filling port of the oil pot 62 with a rubber plug, when the bearing 4 needs to be lubricated, a portion of the lubricating oil in the oil pot 62 enters the injection assembly 63, and then under the control of the control module 67, the lubricating oil in the injection assembly 63 is injected into the bearing 4, so that the lubricating oil lubricates the bearing 4, so that the bearing 4 produces less noise when rotating. When the bearing 4 produces noise due to lack of lubrication, the injection assembly 63 in the oil pot 62 injects the lubricating oil in the oil pot 62 into the bearing 4, so that the lubricating oil lubricates the bearing 4, so that the bearing 4 can be lubricated in time when the motor is working, thereby reducing the loud noise generated when the bearing 4 supports the rotation of the rotor 3, reducing the number of maintenance times for the motor, and increasing the service life of the motor.

[0033] Reference Figure 2 , Figure 4 and Figure 5 The injection assembly 63 includes an electric telescopic rod 631 fixed in the protective shell 61, a plug 632 is fixed to the telescopic end of the electric telescopic rod 631, a feeding tube 633 is fixed in the protective shell 61, the plug 632 is located in the feeding tube 633 and is slidably connected to the feeding tube 633, an injection tube 634 is fixed on the protective shell 61, the injection tube 634 passes through the protective shell 61, and is connected to the feeding tube 633.

[0034] When it is necessary to inject the lubricating oil in the oil pot 62 into the bearing 4, the battery 64 is connected to the electric telescopic rod 631, and the control module 67 is used to control the movement of the telescopic end of the electric telescopic rod 631, so that the telescopic end of the electric telescopic rod 631 drives the plug 632, and the plug 632 moves in the feeding pipe 633, so that the lubricating oil in the oil pot 62 is sucked into the feeding pipe 633, and then under the push of the plug 632, the lubricating oil in the feeding pipe 633 is pushed into the injection pipe 634, and then the lubricating oil is injected into the bearing 4 from the injection pipe 634, so that the lubricating oil lubricates the bearing 4, and the electric telescopic rod 631 drives the plug 632 to move in the feeding pipe 633, so that the lubricating oil in the oil pot 62 enters the feeding pipe 633, and then is transported from the feeding pipe 633 to the bearing 4 by the injection pipe 634, so that the lubricating oil in the oil pot 62 can be easily moved to the bearing 4, so that the lubricating oil can lubricate the bearing 4.

[0035] Reference Figure 2 and Figure 5A one-way valve 1 635 is fixed between the oil pot 62 and the feeding pipe 633, and a one-way valve 2 636 is fixed between the feeding pipe 633 and the injection pipe 634. When the telescopic end of the electric telescopic rod 631 drives the plug 632 to retract, the lubricating oil passes through the one-way valve 1 635 and enters the feeding pipe 633. At the same time, the one-way valve 2 636 blocks the injection pipe 634 to prevent air from entering the feeding pipe 633. Then, the electric telescopic rod 631 drives the plug 632 to squeeze the lubricating oil in the feeding pipe 633. The one-way valve 1 635 blocks the lubricating oil from returning to the oil pot 62. Then, the lubricating oil passes through the one-way valve 2 636 and enters the injection pipe 634. By limiting the feeding pipe 633 with the one-way valve 1 635 and the one-way valve 2 636, the feeding pipe 633 can be easily sucked by the feeding pipe 633 and then pushed into the injection pipe 634.

[0036] Reference Figure 2 , Figure 3 and Figure 5 A noise sensor 65 is fixed in the protective shell 61, and a noise sensor head 66 is fixed on the noise sensor 65. The noise sensor head 66 penetrates the protective shell 61 and is located on one side of the bearing 4. The noise sensor 65 is installed in the protective shell 61, and the noise sensor 65 is connected to the control module 67. Then the battery 64 supplies power to the noise sensor 65. The noise sensor head 66 on the noise sensor 65 monitors the noise near the bearing 4. When the bearing 4 generates a large noise, the noise sensor head 66 detects the noise, and then the noise sensor 65 transmits the data to the control module 67. The control module 67 controls the electric telescopic rod 631 to work. By using the noise sensor head 66 on the noise sensor 65 to monitor the noise near the bearing 4, it can timely feedback the noise generated by the bearing 4 and lubricate the bearing 4 with lubricating oil.

[0037] Reference Figure 2 and Figure 5 An air intake valve 68 is fixed on the oil pot 62, and the air intake valve 68 penetrates the protective shell 61. The air intake valve 68 is installed on the oil pot 62. After the oil pot 62 is filled with lubricating oil, the oil filling port of the oil pot 62 is blocked with a rubber plug. When the feeding pipe 633 sucks the lubricating oil in the oil pot 62, the lubricating oil enters the feeding pipe 633, and the outside air enters the oil pot 62 from the air intake valve 68. When the lubricating oil in the oil pot 62 enters the feeding pipe 633, the outside air enters the oil pot 62, so that the pressure inside and outside the oil pot 62 is kept consistent, thereby reducing the possibility of the feeding pipe 633 sucking the lubricating oil and the suction being blocked.

[0038] Reference Figure 3 , Figure 4 and Figure 6The extrusion stabilization mechanism 7 includes an extrusion plate 71 arranged on one side of the injection tube 634, the extrusion plate 71 is fixedly connected to the injection tube 634, support rods 73 are fixed at both ends of the extrusion plate 71, support rods 72 are slidably connected to the support rods 73, a support spring 74 is arranged between the support rods 73 and the support rods 72, both ends of the support spring 74 are fixedly connected to the support rods 72 and 73, and an extrusion assembly 75 is arranged between the extrusion plate 71 and the plug 632.

[0039] When the electric telescopic rod 631 drives the plug 632 to squeeze the lubricating oil in the feeding tube 633, the side of the plug 632 away from the lubricating oil drives the squeezing assembly 75, and the squeezing assembly 75 pushes the squeezing plate 71, so that the squeezing plate 71 pushes the supporting rod 2 73, so that the supporting rod 2 73 slides on the supporting rod 1 72, and the squeezing plate 71 drives the injection tube 634 to contact the bearing 4, so that the lubricating oil coming out of the injection tube 634 flows to the bearing 4. After the injection of the lubricating oil is completed, the plug 632 moves again to fill the feeding tube 633 with the lubricating oil, and at the same time, the squeezing assembly 75 is away from the extrusion plate 71, and then under the push of the support spring 74, the extrusion plate 71 is moved away from the bearing 4, so that the injection tube 634 keeps a distance from the bearing 4, and the extrusion assembly 75 is driven by the plug 632 when it moves, so that the extrusion assembly 75 pushes the extrusion plate 71, and the extrusion plate 71 drives the injection tube 634 to move, so that the injection tube 634 is in contact with the bearing 4, so that the lubricating oil in the injection tube 634 can be in contact with the bearing 4, reducing the possibility of the lubricating oil dripping to other positions, and at the same time reducing the possibility of the injection tube 634 affecting the normal rotation of the bearing 4.

[0040] Reference Figure 3 , Figure 4 and Figure 6 The extrusion assembly 75 includes an extrusion rod 1 751 fixed on the plug 632, an extrusion rod 2 753 is fixed on the extrusion rod 1 751, a movable groove 752 is opened on the protective shell 61, the extrusion rod 2 753 passes through the movable groove 752, and an extrusion inclined block 754 is provided at one end of the extrusion rod 2 753 away from the extrusion rod 1 751. The extrusion inclined block 754 is fixedly connected to the extrusion plate 71, and the inclined surface of the extrusion inclined block 754 conflicts with the extrusion rod 2 753.

[0041] When the plug 632 squeezes the lubricating oil in the feeding tube 633 under the action of the electric telescopic rod 631, the plug 632 drives the extrusion rod 1 751, and the extrusion rod 1 751 drives the extrusion rod 2 753, so that the extrusion rod 2 753 moves in the movable groove 752 of the protective shell 61, and then the extrusion rod 2 753 hits the inclined surface of the extrusion inclined block 754, and the extrusion inclined block 754 pushes the extrusion rod, so that the extrusion plate 71 moves under the support of the support rod 1 72 and the support rod 2 73, and the extrusion plate 71 drives the injection tube 634 to approach the bearing 4. When the plug 632 squeezes the lubricating oil in the injection tube 634, when the plug 632 drives the extrusion rod 1 751, the extrusion rod 1 751 drives the extrusion rod 2 753, and the extrusion rod 2 753 pushes the extrusion inclined block 754, it is convenient for the extrusion plate 71 to drive the injection tube 634 to hit the bearing 4 under the support of the support rod 1 72 and the support rod 2 73, thereby improving the efficiency of injecting the lubricating oil into the bearing 4.

[0042] Working principle: When the brushless motor is required to work, firstly, the brushless motor is energized to allow the stator 2 on the brushless motor to generate a magnetic field according to a rule. Under the action of the magnetic field, the rotor 3 starts to rotate with the support of the two bearings 4 of the housing. At the same time, the position sensor 5 installed on the rotor 3 monitors the position of the rotor 3 in real time to improve the control accuracy of the brushless motor. At the same time, the layout of the motor stator 2 winding is optimized to reduce the uneven distribution of the magnetic flux and reduce the vibration and noise of the motor. At the same time, the noise sensor head 66 on the noise sensor 65 monitors the noise of the two bearings 4 rotating. When the bearings 4 are used for a long time, dust enters the bearings 4. When the bearing 4 lacks lubrication and generates a loud noise, the noise sensor head 66 detects the noise, and then the noise sensor 65 transmits the data to the control module 67. The control module 67 controls the electric telescopic rod 631 to work, so that the telescopic end of the electric telescopic rod 631 drives the plug 632, and the plug 632 moves in the feeding pipe 633, so that the lubricating oil in the oil pot 62 is sucked into the feeding pipe 633, and then under the push of the plug 632, the lubricating oil in the feeding pipe 633 is pushed into the injection tube 634, and then the lubricating oil is injected from the injection tube 634 onto the bearing 4, so that the lubricating oil lubricates the bearing 4.

[0043] While the plug 632 pushes the lubricating oil in the feeding tube 633, the plug 632 drives the extrusion rod 1 751, and the extrusion rod 1 751 drives the extrusion rod 2 753, so that the extrusion rod 2 753 moves in the movable groove 752 of the protective shell 61, and then the extrusion rod 2 753 contacts the inclined surface of the extrusion inclined block 754, and the extrusion inclined block 754 pushes the extrusion rod, so that the extrusion plate 71 moves under the support of the support rod 1 72 and the support rod 2 73, and the extrusion plate 71 drives the injection tube 634 to approach the bearing 4. When the injection of the lubricating oil is completed, the plug 632 is reset to allow the feeding tube 633 to be re-sucked full of lubricating oil. Under the push of the support spring 74, the extrusion plate 71 is kept away from the bearing 4, and the injection tube 634 keeps a distance from the bearing 4, so as to facilitate the next injection of lubricating oil to the bearing 4.

Claims

1. A high-precision brushless motor, comprising a housing (1), characterized in that: A stator (2) is fixed in the housing (1), a rotor (3) is arranged in the stator (2), both ends of the rotor (3) are rotatably connected to bearings (4), the bearings (4) are fixedly connected to the housing (1), a position sensor (5) is mounted on the rotor (3), an active lubrication and noise reduction mechanism (6) is arranged on the housing (1), the active lubrication and noise reduction mechanism (6) corresponds to the bearings (4), and an extrusion stabilization mechanism (7) is arranged on the bearings (4).

2. A high-precision brushless motor according to claim 1, characterized in that: The active lubrication noise reduction mechanism (6) comprises a protective shell (61) fixed on the shell (1), the protective shell (61) passes through the shell (1), an oil pot (62) is fixed in the protective shell (61), an injection assembly (63) is arranged in the protective shell (61), a battery (64) is fixed in the protective shell (61), and a control module (67) is fixed in the protective shell (61).

3. A high-precision brushless motor according to claim 2, characterized in that: The injection assembly (63) comprises an electric telescopic rod (631) fixed in a protective shell (61), a plug (632) being fixed to the telescopic end of the electric telescopic rod (631), a feeding tube (633) being fixed in the protective shell (61), the plug (632) being located in the feeding tube (633) and being slidably connected to the feeding tube (633), an injection tube (634) being fixed on the protective shell (61), the injection tube (634) penetrating the protective shell (61) and being connected to the feeding tube (633).

4. A high-precision brushless motor according to claim 3, characterized in that: A first one-way valve (635) is fixed between the oil pot (62) and the feeding pipe (633), and a second one-way valve (636) is fixed between the feeding pipe (633) and the injection pipe (634).

5. The high-precision brushless motor according to claim 3, characterized in that: A noise sensor (65) is fixed inside the protective shell (61), a noise sensor head (66) is fixed on the noise sensor (65), and the noise sensor head (66) penetrates the protective shell (61) and is located on one side of the bearing (4).

6. A high-precision brushless motor according to claim 2, characterized in that: An air intake valve (68) is fixed on the oil pot (62), and the air intake valve (68) penetrates the protective shell (61).

7. A high-precision brushless motor according to claim 2, characterized in that: The extrusion stabilization mechanism (7) comprises an extrusion plate (71) arranged on one side of the injection tube (634), the extrusion plate (71) being fixedly connected to the injection tube (634), a second support rod (73) being fixed at both ends of the extrusion plate (71), a first support rod (72) being slidably connected to the second support rod (73), a support spring (74) being arranged between the second support rod (73) and the first support rod (72), both ends of the support spring (74) being fixedly connected to the first support rod (72) and the second support rod (73), and an extrusion assembly (75) being arranged between the extrusion plate (71) and the plug (632).

8. A high-precision brushless motor according to claim 7, characterized in that: The extrusion assembly (75) comprises an extrusion rod 1 (751) fixed on the plug (632), an extrusion rod 2 (753) fixed on the extrusion rod 1 (751), a movable groove (752) is provided on the protective shell (61), the extrusion rod 2 (753) passes through the movable groove (752), and an extrusion inclined block (754) is provided at one end of the extrusion rod 2 (753) away from the extrusion rod 1 (751), the extrusion inclined block (754) is fixedly connected to the extrusion plate (71), and the inclined surface of the extrusion inclined block (754) is in contact with the extrusion rod 2 (753).

Images