WO2023023989A1 - Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote - Google Patents

Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote Download PDF

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Publication number
WO2023023989A1
WO2023023989A1 PCT/CN2021/114596 CN2021114596W WO2023023989A1 WO 2023023989 A1 WO2023023989 A1 WO 2023023989A1 CN 2021114596 W CN2021114596 W CN 2021114596W WO 2023023989 A1 WO2023023989 A1 WO 2023023989A1
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WO
WIPO (PCT)
Prior art keywords
bearing sleeve
bearing
motor
oil
wall
Prior art date
Application number
PCT/CN2021/114596
Other languages
English (en)
Chinese (zh)
Inventor
陈晓宇
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 PCT/CN2021/114596 priority Critical patent/WO2023023989A1/fr
Publication of WO2023023989A1 publication Critical patent/WO2023023989A1/fr

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    • 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
    • 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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/08—Structural association with bearings

Definitions

  • This application relates to the technical field of motors, in particular to motors, power mechanisms and unmanned aerial vehicles.
  • the application proposes a motor, a power mechanism and an unmanned aerial vehicle.
  • the motor proposed in the first aspect of this application includes:
  • a motor base the motor base is provided with a mounting hole
  • the rotating shaft is rotatably installed in the installation hole
  • the bearing assembly includes a bearing sleeve and an oil bearing, the bearing sleeve is installed in the installation hole, the oil bearing is at least partly installed in the bearing sleeve, and the rotating shaft passes through the oil bearing;
  • the bearing sleeve is a non-metallic bearing sleeve
  • one of the bearing sleeve and the motor base is provided with a protrusion
  • the other of the bearing sleeve and the motor base is provided with a groove, so The protrusion is embedded in the groove to limit the relative rotation of the bearing sleeve relative to the motor seat; or, the motor seat is a metal motor seat, and the bearing sleeve is a metal bearing sleeve.
  • the power mechanism proposed in the second aspect of the present application includes a motor and a propeller, the propeller is installed on the motor and driven to rotate by the motor, wherein the motor includes:
  • a motor base the motor base is provided with a mounting hole
  • the rotating shaft is rotatably installed in the installation hole
  • the bearing assembly includes a bearing sleeve and an oil bearing, the bearing sleeve is installed in the installation hole, the oil bearing is at least partly installed in the bearing sleeve, and the rotating shaft passes through the oil bearing;
  • the bearing sleeve is a non-metallic bearing sleeve
  • one of the bearing sleeve and the motor base is provided with a protrusion
  • the other of the bearing sleeve and the motor base is provided with a groove, so The protrusion is embedded in the groove to limit the relative rotation of the bearing sleeve relative to the motor seat; or, the motor seat is a metal motor seat, and the bearing sleeve is a metal bearing sleeve.
  • the drone proposed in the third aspect of this application includes:
  • a power mechanism installed on the arm, for providing flight power for the flight of the unmanned aerial vehicle
  • the power mechanism includes a motor and a propeller, the propeller is mounted on the motor and driven to rotate by the motor, wherein the motor includes:
  • a motor base the motor base is provided with a mounting hole
  • the rotating shaft is rotatably installed in the installation hole
  • the bearing assembly includes a bearing sleeve and an oil bearing, the bearing sleeve is installed in the installation hole, the oil bearing is at least partly installed in the bearing sleeve, and the rotating shaft passes through the oil bearing;
  • the bearing sleeve is a non-metallic bearing sleeve
  • one of the bearing sleeve and the motor base is provided with a protrusion
  • the other of the bearing sleeve and the motor base is provided with a groove, so The protrusion is embedded in the groove to limit the relative rotation of the bearing sleeve relative to the motor seat; or, the motor seat is a metal motor seat, and the bearing sleeve is a metal bearing sleeve.
  • the motor proposed in the first aspect of the present application realizes positioning through the cooperation between the bearing sleeve and the motor seat through the cooperation of the protrusion and the groove, and there will be no relative friction between the bearing sleeve and the motor seat.
  • Rotation can avoid the situation that the motor drives the bearing sleeve to rotate and cause the bearing sleeve to be thrown out of the motor seat.
  • the motor seat as a metal motor seat
  • the bearing sleeve as a metal bearing sleeve
  • a more firm and reliable connection method can be adopted between the motor base and the bearing sleeve, and it is also possible to prevent the bearing sleeve from being thrown out of the motor base.
  • the above two improvement methods overcome the technical problem that the bearing sleeve of the motor will be thrown out from time to time, and effectively prolong the service life of the motor.
  • Fig. 1 is a schematic sectional view of a motor proposed by an embodiment of the present application
  • Fig. 2 is a structural schematic view of the bottom view of the motor proposed by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of cooperation between a motor seat and a bearing sleeve proposed in an embodiment of the present application;
  • Fig. 4 is a schematic structural view of a motor seat proposed by an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a bearing sleeve proposed by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of the cooperation between the motor base and the bearing sleeve proposed in another embodiment of the present application.
  • Fig. 7 is a schematic structural view of a motor seat proposed in another embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a bearing sleeve proposed in another embodiment of the present application.
  • Fig. 9 is a schematic cross-sectional view of a motor proposed in another embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of a stopper proposed by an embodiment of the present application.
  • Fig. 11 is a schematic diagram of the cooperation between the body and the stopper proposed by an embodiment of the present application.
  • Fig. 12 is a schematic diagram of the cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 13 is a schematic structural diagram of an ontology proposed in another embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a stopper proposed in another embodiment of the present application.
  • Fig. 15 is a schematic diagram of the cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 16 is a schematic diagram of cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 17 is a schematic diagram of cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 18 is a schematic diagram of cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 19 is a schematic diagram of cooperation between the body and the stopper proposed in another embodiment of the present application.
  • Fig. 20 is a schematic cross-sectional view of a motor proposed in another embodiment of the present application.
  • Fig. 21 is an explosion schematic diagram of the structure shown in Fig. 20;
  • Fig. 22 is a schematic diagram of the coordination of the motor base, bearing sleeve, oil bearing and ball bearing proposed by an embodiment of the present application;
  • Fig. 23 is a partially enlarged schematic diagram of A in Fig. 22;
  • Fig. 24 is a schematic diagram of the cooperation of the motor seat, the oil bearing and the bearing seat proposed in another embodiment of the present application;
  • Fig. 25 is a schematic structural view of the bearing housing shown in Fig. 24;
  • Fig. 26 is a schematic structural view of a power mechanism proposed in an embodiment of the present application.
  • Fig. 27 is a schematic structural diagram of a drone proposed in an embodiment of the present application.
  • first and second are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features.
  • a feature defined as “first” or “second” may explicitly or implicitly include one or more of said features.
  • “plurality” means two or more, unless otherwise specifically defined.
  • the embodiment of the present application proposes a kind of motor 100, and proposed motor 100 comprises motor base 10, rotating shaft 20, stator 30, rotor 40 and bearing assembly 50, and motor base 10 is provided with mounting hole 11 , the rotating shaft 20 is rotatably passed through the mounting hole 11 , the stator 30 is mounted on the motor base 10 , and the rotor 40 is mounted on the rotating shaft 20 .
  • the bearing assembly 50 includes a bearing sleeve 51 and an oil-impregnated bearing 52 , the bearing sleeve 51 is installed in the installation hole 11 , the oil-impregnated bearing 52 is installed in the bearing sleeve 51 , and the rotating shaft 20 passes through the oil-impregnated bearing 52 .
  • the stator 30 When the motor 100 is working, the stator 30 is connected with alternating current to generate a rotating magnetic field, and the rotor 40 generates torque under the action of electromagnetic force, and rotates with the rotating magnetic field, and the rotating rotor 40 drives the rotating shaft 20 to rotate relative to the motor base 10 .
  • the stator 30 includes an iron core 31 and a plurality of windings 32
  • the iron core 31 includes an annular yoke 311 and a plurality of stator teeth 312
  • the annular yoke 311 is sleeved on the outer wall of the motor base 10
  • the plurality of stator teeth 312 surround the ring
  • the yokes 311 are arranged at intervals, and a winding 32 is wound on each stator tooth 312 .
  • the rotor 40 also includes an end cover 41, a surrounding wall 42 and a plurality of permanent magnets 43.
  • the end cover 41 is connected to the rotating shaft 20, the surrounding wall 42 surrounds the end cover 41, and a plurality of permanent magnets 43 are arranged at intervals around the surrounding wall 42.
  • the magnet 43 is opposite to the stator tooth 312.
  • the relative of the permanent magnet 43 to the stator tooth 312 does not mean that the position of the permanent magnet 43 and the stator tooth 312 is fixed.
  • the projection on the surrounding wall 42 at least partially overlaps the permanent magnet 43 .
  • the permanent magnet 43 and the stator tooth 312 are opposite in the radial direction, and the permanent magnet 43 works through the interaction of the radial magnetic field generated by the stator tooth 312 and the winding 32, that is, the proposed motor 100 for radial motors.
  • the proposed motor 100 can also be an axial motor, that is, the permanent magnet 43 and the stator tooth 312 are arranged to be axially opposite, and the permanent magnet 43 passes through the axial direction generated by the stator tooth 312 and the winding 32.
  • the interaction of magnetic fields works.
  • the stator 30 is located inside the surrounding wall 42 , and when the motor 100 is running, the end cover 41 and the surrounding wall 42 rotate relative to the stator 30 , that is, the proposed motor 100 is an external rotor motor.
  • the proposed motor 100 can also be configured as an external rotor motor, which depends on design requirements.
  • the bearing sleeve 51 is a non-metallic bearing sleeve
  • the outer wall of the bearing sleeve 51 is provided with a protrusion 511
  • the inner wall of the mounting hole 11 is provided with a groove 111
  • the protrusion 511 is embedded in the groove 111 to limit the relative rotation of the bearing sleeve 51 relative to the motor base 10 .
  • the bearing sleeve 51 is a plastic bearing sleeve.
  • Optional plastic bearing sleeves 51 include polyoxymethylene (POM) plastic bearing sleeves, nylon (Polyamide, PA) plastic bearing sleeves, polytetrafluoroethylene (Poly tetrafluoroethylene, PTFE) plastic bearing sleeves, and the like.
  • POM polyoxymethylene
  • nylon Polyamide, PA
  • PTFE polytetrafluoroethylene
  • the number of protrusions 511 and grooves 111 is one
  • the grooves 111 are provided on the inner sidewall of the mounting hole 11 and extend to the bottom of the motor base 10
  • the protrusions 511 are provided on the outer wall of the bearing sleeve 51.
  • the number of protrusions 511 and grooves 111 is not limited to one, and may also be two or more.
  • a plurality of protrusions 511 surround the outer wall of the bearing sleeve 51 Arranged at intervals, a plurality of grooves 111 are arranged at intervals around the inner sidewall of the installation hole 11 .
  • the positions of the protrusion 511 and the groove 111 can be interchanged, that is, the protrusion 511 is arranged on the inner side wall of the mounting hole 11, and the groove 111 is arranged on the outer side wall of the bearing sleeve 51. It depends on actual design needs.
  • the groove 111 and the protrusion 511 are not limited to the above-mentioned method of being arranged on the inner side wall of the mounting hole 11 and the outer side wall of the bearing sleeve 51, for example, in some other embodiments, as shown in Fig. 9 and Fig. 10
  • the motor base 10 includes a body 12 and a stopper 13, the body 12 is provided with the installation hole 11, the stopper 13 is installed on the body 12, the stopper 13 is used to prevent the bearing sleeve 51 from falling out of the installation hole 11, wherein the stopper
  • the member 13 is provided with at least one protrusion 511, and the bearing sleeve 51 is provided with at least one groove 111.
  • the protrusion 511 is embedded in the groove 111, so that the bearing sleeve 51 and the stopper Relative rotation cannot occur between the components 13, that is, relative rotation cannot occur between the bearing sleeve 51 and the mounting seat.
  • the cooperation between the protrusion 511 and the groove 111 may or may not be provided between the outer side wall of the bearing sleeve 51 and the inner side wall of the installation hole 11 .
  • the positions of the protrusion 511 and the groove 111 can be interchanged, that is, the protrusion 511 is disposed on the bearing sleeve 51 and the groove 111 is disposed on the blocking member 13 is also possible.
  • a step 112 is provided on the inner wall of the installation hole 11 , one end of the bearing sleeve 51 abuts against the step 112 , and the stopper 13 abuts against the other end of the bearing sleeve 51 , thereby preventing the bearing sleeve 51 from falling out of the installation hole 11 .
  • a sinking groove 121 is provided at the bottom of the body 12 and at the installation hole 11 , the stopper 13 is embedded in the sinking groove 121 , and the inner wall of the sinking groove 121 is provided with an inner wall.
  • the outer wall of the stopper 13 is provided with external threads, and the stopper 13 is mounted on the body 12 through threaded connection.
  • the bottom of the body 12 may not be provided with a sinking groove 121, the inner side wall of the mounting hole 11 is provided with internal threads, and the outer side wall of the stopper 13 is provided with external threads, and the stopper 13 is installed by threaded connection. in the mounting hole 11.
  • the threaded connection between the stopper 13 and the body 12 is not limited.
  • the stopper 13 is embedded in the sinking groove 121.
  • the inner side wall of the sinking groove 121 is provided with a first buckle part 61
  • the outer sidewall of the stopper 13 is provided with a second buckle part 62.
  • the stopper 13 passes through the buckle
  • the buckle connection is installed on the body 12 .
  • the first buckle portion 61 includes a first groove portion 611 and a second groove portion 612.
  • the first groove portion 611 extends axially from the bottom of the body 12 along the body 12.
  • One end of the second groove portion 612 is connected to the first groove portion 612.
  • the groove portion 611 communicates, and the other end extends circumferentially along the inner side wall of the sinker 121 .
  • the second locking portion 62 is a protrusion disposed on a sidewall of the blocking member 13 .
  • the bottom of the body 12 may not be provided with the sinking groove 121
  • the inner side wall of the mounting hole 11 is provided with the first buckle portion 61
  • the outer side wall of the stopper 13 is provided with the second buckle portion 62
  • the stopper 13 passes through the buckle.
  • Buckle connection is installed in the installation hole 11.
  • first buckle portion 61 and the second buckle portion 62 reference may be made to the above-mentioned structure, which will not be repeated here.
  • connection between the stopper 13 and the body 12 is not limited to the threaded connection and snap connection.
  • the bottom of the body 12 is located at the installation hole 11
  • a sinking groove 121 is provided, and the blocking member 13 is embedded in the sinking groove 121 , and the blocking member 13 and the groove bottom wall and/or the groove side wall of the sinking groove 121 are bonded and fixed by glue 70 .
  • the bottom of the body 12 may not be provided with a sinking groove 121, and the stopper 13 is directly embedded in the installation hole 11, and the inner side wall of the installation hole 11 and the outer sidewall of the stopper 13 are bonded and fixed by glue 70 .
  • the bottom of the body 12 may not be provided with a sinking groove 121 , and the stopper 13 is directly bonded and fixed on the bottom of the body 12 by glue 70 .
  • connection between the stopper 13 and the body 12 is not limited to threaded connection, snap-fit connection and bonding.
  • the bottom of the body 12 is located A sinking groove 121 is provided at the hole 11 , and the blocking member 13 is embedded in the sinking groove 121 , and the blocking member 13 is fastened to the bottom surface of the sinking groove 121 by screws 80 .
  • the bottom of the body 12 may not be provided with a sunken groove 121 , and the stopper 13 is attached to the bottom of the body 12 and fastened by screws 80 .
  • the oil-impregnated bearing 52 is a spherical oil-impregnated bearing 52 .
  • the spherical oil-impregnated bearing 52 can automatically adjust the concentricity with other bearings during the rotation of the rotating shaft 20 to realize automatic centering, so that the motor 100 operates stably.
  • the bearing sleeve 51 is provided with a spherical inner cavity 512 to fit with the spherical oil-impregnated bearing 52 .
  • one end of the bearing sleeve 51 is provided with a plurality of slots 513 extending in the axial direction, and the plurality of slots 513 are distributed along the circumferential direction of the bearing sleeve 51 to divide one end of the bearing sleeve 51 into a plurality of petals.
  • the sheet 514 and the oil-impregnated bearing 52 are located in the space enclosed by the plurality of flaps 514 .
  • the outer sidewall of the bearing sleeve 51 is bonded to the inner sidewall of the installation hole 11 . In this way, the connection between the bearing sleeve 51 and the motor base 10 can be made tighter, further preventing relative rotation between the bearing sleeve 51 and the motor base 10 .
  • the outer side wall of the bearing sleeve 51 is not bonded to the inner side wall support of the mounting hole 11 .
  • the outer sidewall of the bearing sleeve 51 is provided with a glue groove 515 for accommodating glue for bonding the bearing sleeve 51 to the inner sidewall of the installation hole 11 .
  • More glue can be accommodated by setting the glue groove 515 , so that the bearing sleeve 51 and the inner wall of the mounting hole 11 are firmly bonded.
  • the glue groove 515 is not limited to be arranged on the outer sidewall of the bearing sleeve 51, and may also be arranged on the inner sidewall of the mounting hole 11. Of course, it is also possible that neither the outer wall of the bearing sleeve 51 nor the inner wall of the mounting hole 11 is provided with the glue groove 515 .
  • glue grooves 515 there are multiple glue grooves 515 , and the multiple glue grooves 515 are arranged at intervals around the outer wall of the bearing sleeve 51 .
  • the number of glue grooves 515 may also be one, which is determined according to actual design requirements.
  • the inner sidewall of the bearing sleeve 51 and the outer sidewall of the oil-impregnated bearing 52 are fixed by glue bonding.
  • This design method can keep the oil-impregnated bearing 52 and the bearing sleeve 51 relatively fixed, and reduce wear caused by mutual rotation.
  • the inner sidewall of the bearing sleeve 51 and the outer sidewall of the oil-impregnated bearing 52 are not set to be fixed by glue.
  • the relationship between the motor base 10 and the bearing sleeve 51 is not limited to the above-mentioned cooperation between the protrusion 511 and the groove 111 to avoid relative rotation between the bearing sleeve 51 and the motor base 10, for example, in some other
  • the motor seat 10 is a metal motor seat
  • the bearing sleeve 51 is a metal bearing sleeve.
  • the motor base 10 as a metal motor base and the bearing sleeve 51 as a metal bearing sleeve, a more firm and reliable connection method can be adopted between the motor base 10 and the bearing sleeve 51, so that the bearing sleeve 51
  • the connection with the motor base 10 is firm, and the situation that the bearing sleeve 51 is thrown out from the motor base 10 can also be well reduced.
  • the motor base 10 and the bearing sleeve 51 can be made of copper, copper alloy, aluminum, aluminum alloy, stainless steel and other materials.
  • the inner wall of the mounting hole 11 is provided with a boss 113
  • the boss 113 includes a first side 113a and a second side 113b opposite to the first side 113a
  • the bearing sleeve 51 is arranged on the boss 113
  • the first side 113a of the boss 113 is provided with a first arc-shaped groove 1131
  • the side of the bearing sleeve 51 facing the boss 113 is provided with a second arc-shaped groove 516
  • the second arc-shaped groove 516 encloses and forms a receiving cavity for receiving the spherical oil-impregnated bearing 52
  • the spherical oil-impregnated bearing 52 is partially accommodated in the first arc-shaped groove 1131 and partially accommodated in the second arc-shaped groove 516 .
  • the bearing sleeve 51 and the inner sidewall of the mounting hole 11 can be connected by thread connection or buckle connection or screw 80 fastening or bonding.
  • the specific implementation manners of screw connection or snap connection or screw 80 fastening or bonding can refer to the above-mentioned embodiments, and details are not repeated here.
  • the boss 113 is loosely fitted with the oil bearing 52 . Due to possible errors in the manufacturing or assembly process of the components, the central axis of the rotating shaft 20 and the mounting hole 11 may not be coaxial, and there is an offset, so that the position of the oil bearing 52 is also offset. In this embodiment, by placing the boss The clearance fit between 113 and the oil bearing 52 provides an adjustable space for the oil bearing 52, avoiding a large stress between the rotating shaft 20 and the oil bearing 52 after installation, which affects the stable operation of the motor 100.
  • the bearing sleeve 51 and the oil-impregnated bearing 52 are loosely fitted. Similarly, by setting the bearing sleeve 51 and the oil-impregnated bearing 52 as a clearance fit, the oil-impregnated bearing 52 is given an adjustable space, so as to avoid the large stress between the bearing sleeve 51 and the oil-impregnated bearing 52 after installation, which will affect the performance of the motor 100. Stable operation.
  • the motor base 10 includes a first end 10a and a second end 10b opposite to the first end 10a, the bearing sleeve 51 is disposed on the first end 10a of the motor base 10, and the first side 113a of the boss 113 reaches
  • the distance between the end surfaces of the first end 10a of the motor base 10 is S
  • the thickness of the bearing sleeve 51 in the axial direction of the rotating shaft 20 is L, wherein S>L.
  • the bearing sleeve 51 is an annular solid structure.
  • the bearing assembly 50 further includes a ball bearing 53, the ball bearing 53 is installed in the mounting hole 11 and is located on the second side 113b of the boss 113, and the rotating shaft 20 passes through the ball Bearing 53.
  • the oil bearing 52 and the ball bearing 53 jointly support the smooth rotation of the rotating shaft 20 .
  • the spherical oil-impregnated bearing 52 can automatically adjust the concentricity with the ball bearing 53 during the rotation of the rotating shaft 20 to realize automatic centering, so that the motor 100 operates stably.
  • the bearing sleeve 51 is not limited to be configured as a ring-shaped solid structure.
  • the ring part 91 abuts against the inner side wall of the mounting hole 11
  • the arc part 92 is located inside the ring part 91
  • the arc part 92 surrounds and forms the second arc groove 516
  • the connecting part 93 is connected to the ring part 91 and the arc Between the shaped parts 92.
  • the annular portion 91 , the arc portion 92 and the connecting portion 93 are all sheet structures. In this embodiment, the use of materials is reduced and the quality of the bearing sleeve 51 can be reduced.
  • the ring portion 91 and the inner sidewall of the installation hole 11 may be connected by screw connection, snap connection, adhesive bonding, screw 80 fastening connection or interference fit.
  • screw connection for the specific implementation manners of threaded connection, snap connection, adhesive connection, or screw 80 fastening connection, reference may be made to the above-mentioned embodiments, and details are not repeated here.
  • the connecting portion 93 is connected to the same side of the ring portion 91 and the arc portion 92 .
  • the connection portion 93 can also be connected at any position between the two sides of the ring portion 91 and between the two sides of the arc portion 92, for example, one end of the connection portion 93 is connected to the middle part of the ring portion 91, and the other end of the connection portion 93 It is connected to the middle of the arc portion 92 .
  • the bearing sleeve 51 is integrally formed by stamping.
  • the bearing sleeve 51 is integrally formed by stamping a copper plate or an aluminum alloy plate. Simple to manufacture.
  • the bearing sleeve 51 is also possible to be formed by casting or machining.
  • the embodiment of the present application also proposes a power mechanism 200 .
  • the proposed power mechanism 200 includes a propeller 201 and the above-mentioned motor 100 .
  • the propeller 201 is installed on the motor 100 and driven to rotate by the motor 100 .
  • the propeller 201 is connected to the rotating shaft 20 on the motor 100 , and when the rotor 40 drives the rotating shaft 20 to rotate, it synchronously drives the propeller 201 to rotate.
  • the embodiment of the present application also proposes a drone 300, the proposed drone 300 includes a fuselage 301, a machine arm 302 and the above-mentioned power mechanism 200, and the machine arm 302 is mechanically coupled to the fuselage 301 , the power mechanism 200 is installed on the arm 302 to provide flight power for the flight of the UAV 300 .
  • motor 100 proposed in this application is not limited to use in the field of drones, but can also be used in fields such as mobile robots, smart cars, smart ships, fans, washing machines, and wipers.
  • connection should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. connected, or integrally connected. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediary, and it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • a first feature being "on” or “under” a second feature may include direct contact between the first and second features, and may also include the first and second features Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

La présente invention concerne un moteur électrique (100), un mécanisme de propulsion (200) et un véhicule aérien sans pilote (300), le moteur électrique (100) comprenant un siège de moteur électrique (10), un arbre rotatif (20) et un ensemble palier (50), le siège de moteur électrique (10) étant pourvu d'un trou de montage (11) ; l'arbre rotatif (20) étant disposé de manière rotative dans le trou de montage (11) de manière pénétrante ; l'ensemble palier (50) comprenant un manchon de palier (51) et un palier poreux (52), le manchon de palier (51) étant monté dans le trou de montage (11), et le palier poreux (52) étant au moins partiellement monté à l'intérieur du manchon de palier (51) ; et l'arbre rotatif (20) étant disposé dans le palier poreux (52) de manière pénétrante. Le manchon de palier (51) est un manchon de palier non métallique, un élément parmi le manchon de palier (51) et le siège de moteur électrique (10) est pourvu d'une saillie (511), l'autre élément parmi le manchon de palier (51) et le siège de moteur électrique (10) est pourvu d'une rainure (111), et la saillie (511) est encastrée dans la rainure (111), de manière à limiter la rotation relative du manchon de palier (52) par rapport au siège de moteur électrique (10) ; en variante, le siège de moteur électrique (10) est un siège de moteur électrique métallique, et le manchon de palier (51) est un manchon de palier métallique.
PCT/CN2021/114596 2021-08-25 2021-08-25 Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote WO2023023989A1 (fr)

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PCT/CN2021/114596 WO2023023989A1 (fr) 2021-08-25 2021-08-25 Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote

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Application Number Priority Date Filing Date Title
PCT/CN2021/114596 WO2023023989A1 (fr) 2021-08-25 2021-08-25 Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote

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WO2023023989A1 true WO2023023989A1 (fr) 2023-03-02

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PCT/CN2021/114596 WO2023023989A1 (fr) 2021-08-25 2021-08-25 Moteur électrique, mécanisme de propulsion et véhicule aérien sans pilote

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* Cited by examiner, † Cited by third party
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