WO2016172891A1 - 电机、动力装置及使用该动力装置的无人飞行器 - Google Patents

电机、动力装置及使用该动力装置的无人飞行器 Download PDF

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Publication number
WO2016172891A1
WO2016172891A1 PCT/CN2015/077878 CN2015077878W WO2016172891A1 WO 2016172891 A1 WO2016172891 A1 WO 2016172891A1 CN 2015077878 W CN2015077878 W CN 2015077878W WO 2016172891 A1 WO2016172891 A1 WO 2016172891A1
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WO
WIPO (PCT)
Prior art keywords
rotating shaft
disposed
base
inner ring
outer ring
Prior art date
Application number
PCT/CN2015/077878
Other languages
English (en)
French (fr)
Inventor
耶方明
Original Assignee
深圳市大疆创新科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市大疆创新科技有限公司 filed Critical 深圳市大疆创新科技有限公司
Priority to CN201580004247.3A priority Critical patent/CN106063089B/zh
Priority to CN201810190126.8A priority patent/CN108400668B/zh
Priority to PCT/CN2015/077878 priority patent/WO2016172891A1/zh
Publication of WO2016172891A1 publication Critical patent/WO2016172891A1/zh

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • H02K5/1732—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings radially supporting the rotary shaft at both ends of the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • F16C43/08—Placing rolling bodies in cages or bearings by deforming the cages or the races
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/04—Helicopters
    • B64C27/12—Rotor drives
    • B64C27/14—Direct drive between power plant and rotor hub
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U10/00—Type of UAV
    • B64U10/10—Rotorcrafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U50/00—Propulsion; Power supply
    • B64U50/10—Propulsion
    • B64U50/19—Propulsion using electrically powered motors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22—Rotating parts of the magnetic circuit
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64U—UNMANNED AERIAL VEHICLES [UAV]; EQUIPMENT THEREFOR
    • B64U2101/00—UAVs specially adapted for particular uses or applications
    • B64U2101/30—UAVs specially adapted for particular uses or applications for imaging, photography or videography

Definitions

  • the present invention relates to an electric machine, a power unit using the same, and an unmanned aerial vehicle using the same.
  • a brushless motor includes a base, a stator disposed on the base, and a rotor that is disposed on the stator.
  • a bearing is usually disposed between the stator and the rotor to reduce friction during relative rotation between the stator and the rotor. Due to the inherent radial clearance of the bearing, when the stator and the rotor rotate relative to each other, a slight amount of radial movement is accompanied, resulting in a relatively unstable operation of the brushless motor and a large vibration noise.
  • An electric machine includes a base, a rotor, a rotating shaft and a bearing.
  • the rotor is rotatably disposed outside the base, and one end of the rotating shaft is fixedly disposed on the rotor, and the other end is rotatably coupled to the base through the bearing.
  • the bearing includes an inner ring, an outer ring and a roller, the inner ring is fixedly sleeved on the rotating shaft, and the outer ring is fixedly disposed on the base and surrounds the inner ring, the roller The child is movably disposed between the inner ring and the outer ring. Wherein, the outer ring and the base are connected by an interference fit.
  • the interference fit between the outer ring and the base is such that the basic deviation is an interference fit of the base axis of T.
  • outer ring and the inner ring are axially offset, so that the roller can simultaneously abut against the inner wall of the outer ring and the outer wall of the inner ring.
  • a distance between the inner ring and one end of the rotating shaft is different from a distance between the outer ring and the end of the rotating shaft.
  • the outer wall of the inner ring is provided with a first receiving groove
  • the inner wall of the outer ring is provided with a second receiving groove corresponding to the first receiving groove; the first receiving groove and the second receiving A receiving space is formed between the slots, and the rollers are received in the receiving space and respectively abut against sidewalls of the first receiving slot and sidewalls of the second receiving slot.
  • the rotor includes a peripheral wall and a bottom wall, the peripheral wall is disposed outside the base, and the bottom wall is disposed at an end of the peripheral wall away from the base, the rotating shaft and the bottom The wall is fixedly connected.
  • the rotor further includes a plurality of magnets, and the plurality of magnets are fixedly disposed on the inner support of the peripheral wall and arranged along the circumferential interval of the peripheral wall.
  • a side of the bottom wall facing away from the base is provided with a receiving groove, and the receiving groove is provided with a weighting material, and the weighting material is used for dynamic balance correction of the rotor.
  • the weighting material is an ultraviolet light adhesive adhered to the sidewall of the receiving groove.
  • the weighting material is bonded in one region of the accommodating groove or in a plurality of discontinuous regions.
  • the accommodating groove includes a side wall continuous with the peripheral wall, and the side wall is bent toward a central portion of the bottom wall to form a resisting portion, the resisting portion and the bottom of the accommodating groove Wall to interval setting.
  • the inner ring and the rotating shaft are connected by an interference fit, and an adhesive is disposed between the inner ring and the rotating shaft, and the adhesive is used for fixing the inner ring and the rotating shaft Relative mounting position.
  • the base includes a seat body and a fixing portion disposed on the seat body, the rotating shaft is disposed in the fixing portion, and the bearing is disposed between the fixing portion and the rotating shaft, The rotor cover is disposed outside the fixing portion.
  • the motor further includes a stator, and the stator includes a mounting member fixedly disposed on the fixing portion and a coil wound around the mounting member, and the rotor cover is disposed outside the coil.
  • a power unit includes a motor and a propeller disposed on the motor, the motor including a base, a rotor, a rotating shaft and a bearing.
  • the rotor is rotatably disposed outside the base, and one end of the rotating shaft is fixedly disposed on the rotor, and the other end is rotatably coupled to the base through the bearing.
  • the propeller is coupled to the rotating shaft.
  • the bearing includes an inner ring, an outer ring and a roller, the inner ring is fixedly sleeved on the rotating shaft, and the outer ring is fixedly disposed on the base and surrounds the inner ring, the roller The child is movably disposed between the inner ring and the outer ring. Wherein, the outer ring and the base are connected by an interference fit.
  • the interference fit between the outer ring and the base is such that the basic deviation is an interference fit of the base axis of T.
  • outer ring and the inner ring are axially offset, so that the roller can simultaneously abut against the inner wall of the outer ring and the outer wall of the inner ring.
  • a distance between the inner ring and one end of the rotating shaft is different from a distance between the outer ring and the end of the rotating shaft.
  • the outer wall of the inner ring is provided with a first receiving groove
  • the inner wall of the outer ring is provided with a second receiving groove corresponding to the first receiving groove; the first receiving groove and the second receiving A receiving space is formed between the slots, and the rollers are received in the receiving space and respectively abut against sidewalls of the first receiving slot and sidewalls of the second receiving slot.
  • the rotor includes a peripheral wall and a bottom wall, the peripheral wall is disposed outside the base, and the bottom wall is disposed at an end of the peripheral wall away from the base, the rotating shaft and the bottom The wall is fixedly connected.
  • the rotor further includes a plurality of magnets, and the plurality of magnets are fixedly disposed on the inner support of the peripheral wall and arranged along the circumferential interval of the peripheral wall.
  • a side of the bottom wall facing away from the base is provided with a receiving groove, and the receiving groove is provided with a weighting material, and the weighting material is used for dynamic balance correction of the rotor.
  • the weighting material is an ultraviolet light adhesive adhered to the sidewall of the receiving groove.
  • the weighting material is bonded in one region of the accommodating groove or in a plurality of discontinuous regions.
  • the accommodating groove includes a side wall continuous with the peripheral wall, and the side wall is bent toward a central portion of the bottom wall to form a resisting portion, the resisting portion and the bottom of the accommodating groove Wall to interval setting.
  • the inner ring and the rotating shaft are connected by an interference fit, and an adhesive is disposed between the inner ring and the rotating shaft, and the adhesive is used for fixing the inner ring and the rotating shaft Relative mounting position.
  • the base includes a seat body and a fixing portion disposed on the seat body, the rotating shaft is disposed in the fixing portion, and the bearing is disposed between the fixing portion and the rotating shaft, The rotor cover is disposed outside the fixing portion.
  • the motor further includes a stator, and the stator includes a mounting member fixedly disposed on the fixing portion and a coil wound around the mounting member, and the rotor cover is disposed outside the coil.
  • An unmanned aerial vehicle includes an aircraft body, a motor disposed on the aircraft body, and a propeller disposed on the motor.
  • the motor includes a base, a rotor, a rotating shaft, and a bearing.
  • the rotor is rotatably disposed outside the base, and one end of the rotating shaft is fixedly disposed on the rotor, and the other end is rotatably coupled to the base through the bearing.
  • the propeller is coupled to the rotating shaft.
  • the bearing includes an inner ring, an outer ring and a roller, the inner ring is fixedly sleeved on the rotating shaft, and the outer ring is fixedly disposed on the base and surrounds the inner ring, the roller
  • the child is movably disposed between the inner ring and the outer ring. Wherein, the outer ring and the base are connected by an interference fit.
  • the interference fit between the outer ring and the base is such that the basic deviation is an interference fit of the base axis of T.
  • outer ring and the inner ring are axially offset, so that the roller can simultaneously abut against the inner wall of the outer ring and the outer wall of the inner ring.
  • a distance between the inner ring and one end of the rotating shaft is different from a distance between the outer ring and the end of the rotating shaft.
  • the outer wall of the inner ring is provided with a first receiving groove
  • the inner wall of the outer ring is provided with a second receiving groove corresponding to the first receiving groove; the first receiving groove and the second receiving A receiving space is formed between the slots, and the rollers are received in the receiving space and respectively abut against sidewalls of the first receiving slot and sidewalls of the second receiving slot.
  • the rotor includes a peripheral wall and a bottom wall, the peripheral wall is disposed outside the base, and the bottom wall is disposed at an end of the peripheral wall away from the base, the rotating shaft and the bottom The wall is fixedly connected.
  • the rotor further includes a plurality of magnets, and the plurality of magnets are fixedly disposed on the inner support of the peripheral wall and arranged along the circumferential interval of the peripheral wall.
  • a side of the bottom wall facing away from the base is provided with a receiving groove, and the receiving groove is provided with a weighting material, and the weighting material is used for dynamic balance correction of the rotor.
  • the weighting material is an ultraviolet light adhesive adhered to the sidewall of the receiving groove.
  • the weighting material is bonded in one region of the accommodating groove or in a plurality of discontinuous regions.
  • the accommodating groove includes a side wall continuous with the peripheral wall, and the side wall is bent toward a central portion of the bottom wall to form a resisting portion, the resisting portion and the bottom of the accommodating groove The walls are spaced apart.
  • the inner ring and the rotating shaft are connected by an interference fit, and an adhesive is disposed between the inner ring and the rotating shaft, and the adhesive is used for fixing the inner ring and the rotating shaft Relative mounting position.
  • the base includes a seat body and a fixing portion disposed on the seat body, the rotating shaft is disposed in the fixing portion, and the bearing is disposed between the fixing portion and the rotating shaft, The rotor cover is disposed outside the fixing portion.
  • the motor further includes a stator, and the stator includes a mounting member fixedly disposed on the fixing portion and a coil wound around the mounting member, and the rotor cover is disposed outside the coil.
  • the motor of the unmanned aerial vehicle wherein the inner ring of the bearing is fixedly disposed on the rotating shaft, and the outer ring is fixedly connected to the base through an interference fit, so that the outer ring is at the base
  • the squeezing of the seat is deformed in the radial direction such that the diameter of the outer ring contracts to reduce the spacing between the outer ring and the inner ring. That is, the radial clearance of the bearing is reduced, so that when the inner ring and the outer ring rotate relative to each other, the relative radial movement between the inner ring and the outer ring is reduced, so that the inner ring and the outer ring
  • the rotation between the rings is smoother, reducing the rotational noise of the motor.
  • FIG. 1 is a perspective view of an unmanned aerial vehicle according to an embodiment of the present invention.
  • FIG. 2 is an assembled perspective view of the motor of the unmanned aerial vehicle of FIG. 1.
  • Figure 3 is an exploded perspective view of the motor of Figure 2.
  • Figure 4 is a perspective cross-sectional view of the motor of Figure 3.
  • Figure 5 is a perspective cross-sectional view of the motor of Figure 2.
  • Figure 6 is an enlarged schematic view of the bearing of the motor shown in Figure 3.
  • a component when referred to as being “fixed” to another component, it can be directly on the other component or the component can be in the middle.
  • a component When a component is considered to "connect” another component, it can be directly connected to another component or possibly a central component.
  • a component When a component is considered to be “set to” another component, it can be placed directly on another component or possibly with a centered component.
  • the terms “vertical,” “horizontal,” “left,” “right,” and the like, as used herein, are for illustrative purposes only.
  • an unmanned aerial vehicle 500 is used for mounting an electronic device (not shown) such as a camera or a camera for photographing.
  • the UAV 500 includes an aircraft body 510, a motor 100 disposed on the aircraft body 510, and a propeller 200 disposed on the motor 100.
  • the motor 100 is used to drive the propeller 200 to rotate, thereby driving the UAV 500 to fly.
  • the motor 100 may be plural, and a plurality of motors 100 are respectively disposed on the aircraft body 510.
  • the motor 100 is a brushless motor, and includes a base 10 , a stator 30 fixedly disposed on the base 10 , and rotatably connected to the base 10 .
  • the upper rotor 50 and the rotating shaft assembly 90 disposed on the rotor 50.
  • the base 10 includes a base 11 and a fixing portion 12 disposed on the base 11 .
  • the seat body 11 has a substantially disk shape
  • the fixing portion 12 has a substantially cylindrical shape.
  • the fixing portion 12 is located at a substantially central position of the seat body 11 and protrudes from a side surface of the seat body 11 facing the stator 30 for mounting and fixing the stator 30.
  • the fixing portion 12 is provided with a receiving hole 121 penetrating in the axial direction thereof. The receiving hole 121 penetrates through the seat body 11 at the same time for accommodating a part of the structure of the shaft assembly 90.
  • the stator 30 is disposed on the fixing portion 12 and includes a mounting member 32 and a coil (not shown) wound around the mounting member 32.
  • the mounting member 32 includes a sleeve portion 321 and a support portion 323 formed on the sleeve portion 321 .
  • the sleeve portion 321 has a substantially cylindrical shape, and is fixedly sleeved on the fixing portion 12 and correspondingly stacked on the seat body 11.
  • the support portion 323 may be plural, and the plurality of support portions 323 are provided on the outer peripheral wall of the sleeve portion 321 and are arranged along the circumferential direction of the sleeve portion 321 .
  • the support portion 323 is for supporting the coil (not shown).
  • the coil may be plural, and each of the coils is wound around a support portion 323.
  • each support portion 323 forms a stop portion 325 away from the end of the sleeve portion 321 .
  • the size of each stop portion 325 is larger than the size of the end of the corresponding support portion 323 to prevent the corresponding coil (not shown) from being disengaged from the corresponding support portion 323.
  • the rotor 50 is disposed on the outer periphery of the mounting member 32 and includes a yoke 52 and a magnet 54 disposed on the yoke 52 .
  • the yoke 52 is substantially in the shape of a cylindrical cylinder having a bottom wall that is rotatably disposed on the outer circumference of the mounting member 32.
  • the yoke 52 includes a peripheral wall 521 and a bottom wall 523 disposed at one end of the peripheral wall 521 .
  • the peripheral wall 521 has a substantially cylindrical shape for mounting the magnet 54.
  • the bottom wall 523 is disposed at an end of the peripheral wall 521 away from the base 11 .
  • a through hole 5231 is defined in a substantially central portion of the bottom wall 523, and the through hole 5231 is used to mount the rotating shaft assembly 90.
  • a receiving groove 5233 is defined in a side of the bottom wall 523 facing away from the peripheral wall 521, and the receiving groove 5233 is for receiving a weight (not shown). The weighting material is used to perform dynamic balance correction on the rotor 50.
  • the weighting material is an adhesive.
  • the adhesive is an ultraviolet curing adhesive.
  • the adhesive is a three-bond (Three Bond) 3084 ultraviolet curing adhesive, and the specific gravity is 2.2, that is, The UV curable adhesive has a density of 2200 KG/M 3 .
  • the specific gravity of the UV-curable adhesive can be other values greater than or equal to 2, so that in the case of equal mass, the volume of the adhesive is small, thereby occupying less space for the adhesive.
  • the weighting material can also be other glues.
  • the weighting material is disposed in one region of the accommodating groove 5233 or in a plurality of discontinuous regions to increase the weight of the rotor 50 at the weighting material, so that the rotor 50 as a whole The dynamic balance at the time of rotation satisfies the requirements, thereby making the rotor 50 rotate smoothly, reducing the running noise of the brushless motor 100.
  • the accommodating groove 5233 includes a side wall 5235 that is continuous with the peripheral wall 521.
  • the side wall 5235 is bent toward a substantially central portion of the bottom wall 523 to form a resisting portion 5237, the resisting portion 5237 and the receiving groove.
  • the bottom walls of 5233 are spaced apart.
  • the magnets 54 may be plural, and the plurality of magnets 54 are fixedly disposed inside the peripheral wall 521 of the yoke 52 and arranged along the circumferential interval of the peripheral wall 521. Each magnet 54 corresponds to one of the coils (not shown).
  • the shaft assembly 90 includes a rotating shaft 92 and a bearing 94 disposed on the rotating shaft.
  • the rotating shaft 92 has a substantially cylindrical rod shape, and one end of the rotating shaft 92 is fixedly inserted into the through hole 5231 of the bottom wall 523, and the other end is rotatably inserted into the fixing portion 12 of the base 10.
  • the motor 100 When the motor 100 is energized, the rotor 50 drives the shaft assembly 90 to rotate relative to the stator 30 and the base 10.
  • the bearing 94 may be two, and the two bearings 94 are spaced apart from each other on the rotating shaft 92 and received in the receiving hole 121 of the fixing portion 12 .
  • the bearing 94 is a ball bearing including an inner ring 941 and an outer ring 943 which are coaxially disposed, and a roller 945 disposed between the inner ring 941 and the outer ring 943.
  • the inner ring 941 is fixedly disposed on the rotating shaft 92.
  • the outer ring 943 is fixedly disposed on the inner wall of the receiving hole 121 and surrounds the inner ring 941.
  • the roller 945 is movably disposed on the inner ring 941 and the outer ring. Between 943.
  • the inner ring 941 is fixedly connected to the rotating shaft 92 by an interference fit, and an adhesive is further disposed between the inner ring 941 and the rotating shaft 92 to further fix the relative mounting of the inner ring 941 and the rotating shaft 92. Set the location.
  • the outer ring 943 is fixedly coupled to the fixing portion 12 by an interference fit, so that the outer ring 943 is slightly deformed in the radial direction under the pressing of the inner wall of the receiving hole 121, so that the outer ring 943
  • the aperture is contracted to reduce the spacing between the outer ring 943 and the inner ring 941. That is, the radial clearance of the bearing 94 is reduced, causing the inner ring 941 and the outer ring 943 to reduce or eliminate the relative radial movement between the inner ring 941 and the outer ring 943 when the relative rotation occurs, so that the inner ring 941
  • the rotation between the outer ring 943 and the outer ring 943 is smoother, reducing the rotational noise.
  • the interference fit relationship between the outer ring 943 and the fixing portion 12 is: the basic deviation is the base shaft interference fit of T, specifically, the interference is 0.007 ⁇ 0.012 mm. . It can be understood that the basic deviation of the interference fit relationship can also be selected as R, S, U, and the like.
  • outer ring 943 and the inner ring 941 are axially displaced, so that the roller 945 between the outer ring 943 and the inner ring 941 can simultaneously abut against the inner wall of the outer ring 943 and the outer wall of the inner ring 941. Upper, thereby further reducing the noise emitted by the roller 945 by the inner ring 941 and the outer ring 943 when the inner ring 941 and the outer ring 943 are relatively rotated.
  • the first receiving groove 9411 is recessed on the outer wall of the inner ring 941 .
  • the second receiving groove 9431 is recessed on the inner wall of the outer ring 943 corresponding to the first receiving groove 9411 .
  • the first receiving groove 9411 is disposed substantially opposite to the second receiving groove 9431, and a receiving space 947 is formed therebetween.
  • the receiving space 947 is for receiving the roller 945.
  • the distance between the inner ring 941 and the end of the rotating shaft 92 away from the rotor 50 is greater than the distance between the outer ring 943 and the end of the rotating shaft 92 away from the rotor 50, so that the outer ring 943 and the outer ring
  • the inner ring 941 is dislocated in the axial direction. Further, the side of the first receiving groove 9411 away from the rotor 50 abuts against the roller 945, and the side of the second receiving groove 9431 close to the rotor 50 abuts on the roller 945. The noise emitted by the roller 945 against the inner ring 941 and the outer ring 943 during rolling is avoided.
  • the distance between the inner ring 941 and the end of the rotating shaft 92 away from the rotor 50 can be made smaller than the end of the outer ring 943 and the rotating shaft 92 away from the rotor 50. the distance between. That is, when the inner ring 941 and the outer ring 943 are different in the axial direction from the mounting position of the rotating shaft 92, when the roller 945 is received in the receiving space 947, the roller 945 is respectively associated with the The side wall of the first receiving groove 9411 and the side wall of the second receiving groove 9431 abut against each other.
  • the motor 100 of the present embodiment When the motor 100 of the present embodiment is assembled, first, the coil (not shown) is wound around the mounting member 32, and the mounting member 32 is fixedly disposed on the fixing portion 12. Then, the magnet 54 is mounted on the yoke 52, and one end of the rotating shaft 92 of the rotating shaft assembly 90 is inserted into the bottom wall 523 of the rotor 50. Finally, the other end of the rotating shaft 92 of the rotating shaft unit 90 and the bearing 94 are housed in the fixing portion 12, and the yoke 52 is rotatably provided on the outer circumference of the stator 30.
  • the inner ring 941 of the bearing 94 is fixedly disposed on the rotating shaft 92, and the outer ring 943 is fixedly coupled to the fixing portion 12 by an interference fit, so that the outer ring 943 is A slight deformation occurs in the radial direction of the inner wall of the receiving hole 121, so that the diameter of the outer ring 943 is contracted to reduce the distance between the outer ring 943 and the inner ring 941.
  • the radial clearance of the bearing 94 is reduced, causing the inner ring 941 and the outer ring 943 to reduce or eliminate the relative radial movement between the inner ring 941 and the outer ring 943 when the relative rotation occurs, so that the inner ring 941
  • the rotation with the outer ring 943 is smoother, reducing the rotational noise of the motor 100.
  • outer ring 943 and the inner ring 941 are axially offset, so that the roller 945 between the outer ring 943 and the inner ring 941 can simultaneously abut against the inner wall of the outer ring 943 and the outer wall of the inner ring 941. Therefore, the noise emitted by the roller 945 against the inner ring 941 and the outer ring 943 is further reduced when the inner ring 941 and the outer ring 943 are relatively rotated.
  • the weighting material is disposed on the rotor 50, increasing the weight of the rotor 50 at the weighting material, so that the dynamic balance of the rotor 50 as a whole is satisfactory, so that the rotor 50 rotates smoothly, further The running noise of the brushless motor 100 is lowered.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

本发明涉及一种电机、使用该电机的动力装置及无人飞行器。所述无人飞行器包括飞行器本体、设置在所述飞行器本体上的电机及设置在所述电机上的螺旋桨。所述电机包括基座、转子、转轴及轴承。所述转子可转动地罩设于所述基座外，所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上。所述螺旋桨连接于所述转轴上。所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间。所述外圈与所述基座之间通过过盈配合连接。上述的无人飞行器及其电机的运行噪声相对较小。

Description

电机、动力装置及使用该动力装置的无人飞行器 技术领域
本发明涉及一种电机、使用该电机的动力装置及使用该动力装置的无人飞行器。
背景技术
无刷电机因为低损耗、低噪音、运转顺畅及寿命长的优势，在机电一体化应用领域中得到广泛的应用。通常，无刷电机包括基座、设于该基座上的定子及转动设于该定子上的转子。该定子和该转子之间通常设置有轴承，以减小该定子和该转子之间相对转动时的摩擦。由于轴承固有的径向游隙，该定子和该转子发生相对转动时，会伴随微量的径向移动，导致无刷电机运转相对不平稳，震动噪声较大。
发明内容
鉴于上述状况，有必要提供一种运行噪声相对较小的电机，还有必要提供一种使用该电机的动力装置及使用该动力装置的无人飞行器。
一种电机，其包括基座、转子、转轴及轴承。所述转子可转动地罩设于所述基座外，所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上。所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间。其中，所述外圈与所述基座之间通过过盈配合连接。
进一步地，所述外圈与所述基座之间的过盈配合方式为:基本偏差是T的基轴制过盈配合。
进一步地，所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
进一步地，所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
进一步地，所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
进一步地，所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
进一步地，所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
进一步地，所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
进一步地，所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
进一步地，所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
进一步地，所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁对间隔设置。
进一步地，所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
进一步地，所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
进一步地，所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
一种动力装置，包括电机及设置于所述电机上的螺旋桨，所述电机包括基座、转子、转轴及轴承。所述转子可转动地罩设于所述基座外，所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上。所述螺旋桨连接于所述转轴上。所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间。其中，所述外圈与所述基座之间通过过盈配合连接。
进一步地，所述外圈与所述基座之间的过盈配合方式为:基本偏差是T的基轴制过盈配合。
进一步地，所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
进一步地，所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
进一步地，所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
进一步地，所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
进一步地，所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
进一步地，所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
进一步地，所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
进一步地，所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
进一步地，所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁对间隔设置。
进一步地，所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
进一步地，所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
进一步地，所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
一种无人飞行器，其包括飞行器本体、设置在所述飞行器本体上的电机及设置于所述电机上的螺旋桨。所述电机包括基座、转子、转轴及轴承。所述转子可转动地罩设于所述基座外，所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上。所述螺旋桨连接于所述转轴上。所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间。其中，所述外圈与所述基座之间通过过盈配合连接。
进一步地，所述外圈与所述基座之间的过盈配合方式为:基本偏差是T的基轴制过盈配合。
进一步地，所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
进一步地，所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
进一步地，所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
进一步地，所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
进一步地，所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
进一步地，所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
进一步地，所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
进一步地，所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
进一步地，所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁相对间隔设置。
进一步地，所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
进一步地，所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
进一步地，所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
上述无人飞行器的电机，将所述轴承的内圈固定设置于所述转轴上的同时，将所述外圈通过过盈配合与所述基座固定连接，使所述外圈在所述基座的挤压下沿径向发生形变，从而所述外圈的孔径收缩，以使所述外圈与所述内圈之间的间距减小。即，所述轴承的径向游隙减小，使所述内圈与所述外圈在发生相对转动时，减小了内圈与外圈之间的相对径向移动，使内圈与外圈之间的转动更平稳，降低了电机的转动噪声。
 附图说明
图1为本发明实施方式的无人飞行器的立体示意图。
图2为图1所示无人飞行器的电机的组装立体图。
图3为图2所示电机的立体分解图。
图4为图3所示电机的立体剖视图。
图5为图2所示电机的立体剖视图。
图6为图3所示电机的轴承的放大示意图。
主要元件符号说明
电机 100
基座 10
座体 11
固定部 12
收容孔 121
定子 30
装设件 32
套设部 321
支承部 323
止挡部 325
转子 50
磁轭 52
周壁 521
底壁 523
通孔 5231
容置槽 5233
侧壁 5235
抵挡部 5237
磁体 54
转轴组件 90
转轴 92
轴承 94
内圈 941
第一收容槽 9411
外圈 943
第二收容槽 9431
滚子 945
螺旋桨 200
无人飞行器 500
飞行器本体 510
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
需要说明的是，当组件被称为“固定于”另一个组件，它可以直接在另一个组件上或者也可以存在居中的组件。当一个组件被认为是“连接”另一个组件，它可以是直接连接到另一个组件或者可能同时存在居中组件。当一个组件被认为是“设置于”另一个组件，它可以是直接设置在另一个组件上或者可能同时存在居中组件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本发明。本文所使用的术语“及／或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1，本发明的一实施方式的无人飞行器500，其用于搭载摄影机、照相机等电子装置（图未示出）进行摄影。所述无人飞行器500包括飞行器本体510、设置于飞行器本体510上的电机100以及设置于电机100上的螺旋桨200。电机100用于驱动所述螺旋桨200转动，从而带动所述无人飞行器500飞行。所述电机100可以为多个，多个电机100分别设置于所述飞行器本体510上。
请同时参阅图2及图3，在本实施例中，所述电机100为无刷电机，其包括基座10、固定地设置于基座10上的定子30、可转动地连接于基座10上的转子50以及设置于转子50上的转轴组件90。
所述基座10包括座体11及设置于所述座体11上的固定部12。
所述座体11大致呈圆盘状，所述固定部12大致呈圆柱筒状。所述固定部12位于所述座体11的大致中部位置，并凸出于所述座体11朝向所述定子30的一侧表面，其用于装设并固定所述定子30。所述固定部12沿其轴向贯通开设有收容孔121。收容孔121同时贯穿座体11，其用于收容转轴组件90的部分结构。
定子30设置于固定部12上，其包括装设件32以及绕设于装设件32上的线圈（图未示出）。
所述装设件32包括套设部321以及形成于套设部321上的支承部323。所述套设部321大致呈圆柱筒状，其固定地套设于固定部12上，并对应地叠置于座体11上。所述支承部323可以为多个，多个支承部323设置于套设部321的外周壁，并沿套设部321的周向间隔排列设置。支承部323用于支撑所述线圈（图未示出）。所述线圈可以为多个，每个所述线圈绕设在一个支承部323上。
进一步地，每一个支承部323远离所述套设部321的末端形成一个止挡部325。每一个止挡部325的尺寸大于对应的支承部323末端的尺寸，以防止对应的所述线圈（图未示出）脱离对应的支承部323。
请同时参阅图4及图5，所述转子50罩设于装设件32外周，其包括磁轭52及设置于磁轭52上的磁体54。
所述磁轭52大致呈具有底壁的圆柱筒状，其可转动地罩设于装设件32外周。所述磁轭52包括周壁521及设置于周壁521一端的底壁523。
所述周壁521大致呈圆柱筒状，其用于装设磁体54。
所述底壁523盖设于周壁521远离座体11的一端。底壁523的大致中部位置开设有通孔5231，通孔5231用于装设转轴组件90。底壁523背离周壁521的一侧开设有容置槽5233，容置槽5233用于收容一配重料（图未示出）。所述配重料用于对转子50进行动平衡校正。
在本实施方式中，该配重料为粘胶，具体而言，该粘胶为紫外光固化胶，例如该粘胶为三键（Three Bond）3084紫外光固化胶，其比重为2.2，即该紫外光固化胶密度为2200KG/M3。可以理解，该紫外光固化胶的比重可以为大于或等于2的其他数值，使得在等质量的情况下，粘胶的体积较小，从而较少粘胶的占用空间。当然，配重料也可以为其他粘胶。
在本实施方式中，所述配重料设置于所述容置槽5233的一个区域内或多个不连续的区域内，以增加转子50在所述配重料处的重量，使转子50整体在转动时的动平衡满足要求，从而使得转子50转动平稳，降低无刷电机100的运行噪声。
进一步地，所述容置槽5233包括与所述周壁521相接续的侧壁5235，侧壁5235向所述底壁523的大致中部位置弯折形成一抵挡部5237，抵挡部5237与容置槽5233的底壁相间隔。当所述转子50转动时，收容于所述容置槽5233内的所述配重料由于受到离心力作用，能够紧密抵压于所述侧壁5235上，防止所述配重料因转动而脱落。同时由于抵挡部5237对所述配重料的抵挡和卡持作用，进一步使所述配重料的设置更为牢固，因此，转子50整体在转动时的动平衡能够满足要求，使转子50的转动相对平稳，减小了转子50在转动过程中的震动，降低了无刷电机100的运行噪声。
所述磁体54可以为多个，多个磁体54固定地设置于磁轭52的周壁521的内侧，并沿周壁521的周向间隔排列设置。每个磁体54对应于一个所述线圈（图未示出）。
所述转轴组件90包括转轴92以及设置于转轴上的轴承94。
转轴92大致呈圆柱杆状，其一端固定地插设于所述底壁523的通孔5231，另一端可转动地穿设于基座10的固定部12中。当所述电机100通电作业时，所述转子50带动所述转轴组件90相对所述定子30及所述基座10转动。
在本实施方式中，所述轴承94可以为两个，两个轴承94彼此间隔设置于转轴92上，并收容于所述固定部12的收容孔121中。在本实施方式中，轴承94为球轴承，其包括同轴设置的内圈941及外圈943，以及设置于内圈941与外圈943之间的滚子945。内圈941固定地套设于转轴92上，外圈943固定地设置于所述收容孔121的内壁上并环绕于内圈941之外，滚子945可活动地设置于内圈941与外圈943之间。
进一步地，所述内圈941通过过盈配合与所述转轴92固定连接，所述内圈941与所述转轴92之间还设置有粘胶，以进一步固定内圈941与转轴92的相对装设位置。
进一步地，所述外圈943通过过盈配合与所述固定部12固定连接，使外圈943在所述收容孔121的内壁的挤压下，沿径向发生微量的形变，从而外圈943的孔径收缩，以使外圈943与内圈941之间的间距减小。即，轴承94的径向游隙减小，使内圈941与外圈943在发生相对转动时，减小或消除了内圈941与外圈943之间的相对径向移动，使内圈941与外圈943之间的转动更平稳，降低转动噪声。
在本实施方式中，所述外圈943与所述固定部12之间的过盈配合关系为：基本偏差是T的基轴制过盈配合，具体地，其过盈量为0.007~0.012毫米。可以理解，所述过盈配合关系的基本偏差还可以选择为R，S，U等。
进一步地，所述外圈943与所述内圈941沿轴向错位设置，使外圈943与内圈941之间的滚子945能够同时抵持于外圈943的内壁及内圈941的外壁上，从而进一步降低内圈941与外圈943在发生相对转动时，滚子945因碰撞内圈941与外圈943发出的噪声。
请同时参阅图6，具体而言，所述内圈941的外壁上凹设有第一收容槽9411，所述外圈943的内壁上对应第一收容槽9411凹设有第二收容槽9431。第一收容槽9411与第二收容槽9431大致相对设置，二者之间共同形成一收容空间947。收容空间947用以收容所述滚子945。轴承94套设于转轴92上时，内圈941与转轴92远离转子50的末端之间的距离大于外圈943与转轴92远离转子50的末端之间的距离，使所述外圈943与所述内圈941沿轴向错位设置，进而，第一收容槽9411远离转子50的一侧抵接于滚子945上，同时第二收容槽9431靠近转子50的一侧抵接于滚子945上，避免了滚子945在滚动时因碰撞内圈941与外圈943发出的噪声。
可以理解，所述外圈943与所述内圈941沿轴向错位设置时，可以使得内圈941与转轴92远离转子50的末端之间的距离小于外圈943与转轴92远离转子50的末端之间的距离。即，使内圈941与外圈943在轴线方向上相对于所述转轴92的装设位置不相同，使所述滚子945收容于所述收容空间947内时，滚子945分别与所述第一收容槽9411的侧壁及所述第二收容槽9431的侧壁相抵接。
组装本实施方式的电机100时，首先，将所述线圈（图未示出）绕设于装设件32上，将装设件32固定地设置于固定部12上。然后，将磁体54装设于磁轭52上，再将转轴组件90的转轴92的一端插设于转子50的底壁523上。最后，将转轴组件90的转轴92的另一端及轴承94收容于固定部12内，使磁轭52转动罩设于定子30外周。
本实施方式的无人飞行器500的电机100，将轴承94的内圈941固定设置于转轴92上的同时，将外圈943通过过盈配合与所述固定部12固定连接，使外圈943在所述收容孔121的内壁的挤压下沿径向发生微量的形变，从而外圈943的孔径收缩，以使外圈943与内圈941之间的间距减小。即，轴承94的径向游隙减小，使内圈941与外圈943在发生相对转动时，减小或消除了内圈941与外圈943之间的相对径向移动，使内圈941与外圈943之间的转动更平稳，降低了电机100的转动噪声。
另外，所述外圈943与所述内圈941沿轴向错位设置，使外圈943与内圈941之间的滚子945能够同时抵持于外圈943的内壁及内圈941的外壁上，从而进一步降低内圈941与外圈943在发生相对转动时，滚子945因碰撞内圈941与外圈943发出的噪声。
进一步地，所述配重料设置于所述转子50上，增加转子50在所述配重料处的重量，使转子50整体在转动时的动平衡满足要求，从而使得转子50转动平稳，进一步地降低无刷电机100的运行噪声。
以上实施方式仅用以说明本发明的技术方案而非限制，尽管参照以上较佳实施方式对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或等同替换都不应脱离本发明技术方案的精神和范围。

Claims (42)

  1. 一种电机，其包括基座以及可转动地罩设于所述基座外的转子，其特征在于：所述电机还包括转轴及设置于所述转轴上的轴承；所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上；
    所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间；
    其中，所述外圈与所述基座之间通过过盈配合连接。
  2. 如权利要求1所述的电机，其特征在于：所述外圈与所述基座之间的过盈配合方式为：基本偏差是T的基轴制过盈配合。
  3. 如权利要求1所述的电机，其特征在于：所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
  4. 如权利要求3所述的电机，其特征在于：所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
  5. 如权利要求4所述的电机，其特征在于：所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
  6. 如权利要求1所述的电机，其特征在于：所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
  7. 如权利要求6所述的电机，其特征在于：所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
  8. 如权利要求6所述的电机，其特征在于：所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
  9. 如权利要求8所述的电机，其特征在于：所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
  10. 如权利要求9所述的电机，其特征在于：所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
  11. 如权利要求8所述的电机，其特征在于：所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁相对间隔设置。
  12. 如权利要求1所述的电机，其特征在于：所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
  13. 如权利要求1所述的电机，其特征在于：所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
  14. 如权利要求13所述的电机，其特征在于：所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
  15. 一种动力装置，包括电机及设置于所述电机上的螺旋桨，所述电机包括基座以及可转动地罩设于所述基座外的转子，其特征在于：所述电机还包括转轴及设置于所述转轴上的轴承；所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上；
    所述螺旋桨连接于所述转轴上；所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间；
    其中，所述外圈与所述基座之间通过过盈配合连接。
  16. 如权利要求15所述的动力装置，其特征在于：所述外圈与所述基座之间的过盈配合方式为:基本偏差是T的基轴制过盈配合。
  17. 如权利要求15所述的动力装置，其特征在于：所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
  18. 如权利要求17所述的动力装置，其特征在于：所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
  19. 如权利要求18所述的动力装置，其特征在于：所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
  20. 如权利要求15所述的动力装置，其特征在于：所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
  21. 如权利要求20所述的动力装置，其特征在于：所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
  22. 如权利要求20所述的动力装置，其特征在于：所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
  23. 如权利要求22所述的动力装置，其特征在于：所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
  24. 如权利要求23所述的动力装置，其特征在于：所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
  25. 如权利要求22所述的动力装置，其特征在于：所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁相对间隔设置。
  26. 如权利要求15所述的动力装置，其特征在于：所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
  27. 如权利要求15所述的动力装置，其特征在于：所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
  28. 如权利要求27所述的动力装置，其特征在于：所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
  29. 一种无人飞行器，其包括飞行器本体、设置在所述飞行器本体上的电机及设置于所述电机上的螺旋桨，所述电机包括基座以及可转动地罩设于所述基座外的转子，其特征在于：
    所述电机还包括转轴及设置于所述转轴上的轴承；所述转轴的一端固定地设置于所述转子上，另一端通过所述轴承转动地连接于所述基座上；
    所述螺旋桨连接于所述转轴上；所述轴承包括内圈、外圈及滚子，所述内圈固定套设于所述转轴上，所述外圈固定设置于所述基座上并环绕于所述内圈外，所述滚子可活动地设置于所述内圈及所述外圈之间；
    其中，所述外圈与所述基座之间通过过盈配合连接。
  30. 如权利要求29所述的无人飞行器，其特征在于：所述外圈与所述基座之间的过盈配合方式为:基本偏差是T的基轴制过盈配合。
  31. 如权利要求29所述的无人飞行器，其特征在于：所述外圈与所述内圈沿轴向错位设置，使所述滚子能够同时抵持于所述外圈的内壁及所述内圈的外壁上。
  32. 如权利要求31所述的无人飞行器，其特征在于：所述内圈与所述转轴的一个末端之间的距离，与所述外圈与所述转轴的所述末端之间的距离不相同。
  33. 如权利要求32所述的无人飞行器，其特征在于：所述内圈的外壁上设有第一收容槽，所述外圈的内壁上对应所述第一收容槽设有第二收容槽；所述第一收容槽与所述第二收容槽之间共同形成一收容空间，所述滚子收容于所述收容空间内，并分别与所述第一收容槽的侧壁及所述第二收容槽的侧壁相抵接。
  34. 如权利要求29所述的无人飞行器，其特征在于：所述转子包括周壁及底壁，所述周壁罩设于所述基座之外，所述底壁盖设于所述周壁远离所述基座的一端，所述转轴与所述底壁固定连接。
  35. 如权利要求34所述的无人飞行器，其特征在于：所述转子还包括多个磁体，多个所述磁体固定地设置于所述周壁的内撑，并沿所述周壁的周向间隔排列设置。
  36. 如权利要求34所述的无人飞行器，其特征在于：所述底壁背离所述基座的一侧设置有容置槽，所述容置槽内设置有配重料，所述配重料用以对所述转子进行动平衡校正。
  37. 如权利要求36所述的无人飞行器，其特征在于：所述配重料为粘附在所述容置槽的侧壁上的紫外光粘胶。
  38. 如权利要求37所述的无人飞行器，其特征在于：所述配重料粘结于所述容置槽的一个区域内或多个不连续的区域内。
  39. 如权利要求36所述的无人飞行器，其特征在于：所述容置槽包括与所述周壁相接续的侧壁，所述侧壁向所述底壁的中部位置弯折形成一抵挡部，所述抵挡部与所述容置槽的底壁相对间隔设置。
  40. 如权利要求29所述的无人飞行器，其特征在于：所述内圈与所述转轴之间通过过盈配合连接，且所述内圈与所述转轴之间设置有粘胶，所述粘胶用于固定所述内圈与所述转轴的相对装设位置。
  41. 如权利要求29所述的无人飞行器，其特征在于：所述基座包括座体及设置于所述座体上的固定部，所述转轴穿设于所述固定部，所述轴承设置于所述固定部及所述转轴之间，所述转子罩设于所述固定部外。
  42. 如权利要求41所述的无人飞行器，其特征在于：所述电机还包括定子，所述定子包括固定设置于所述固定部上的装设件及绕设于所述装设件上的线圈，所述转子罩设于所述线圈外。
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