WO2023151418A1 - 轮毂电机和具有其的代步车 - Google Patents

轮毂电机和具有其的代步车 Download PDF

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Publication number
WO2023151418A1
WO2023151418A1 PCT/CN2022/143667 CN2022143667W WO2023151418A1 WO 2023151418 A1 WO2023151418 A1 WO 2023151418A1 CN 2022143667 W CN2022143667 W CN 2022143667W WO 2023151418 A1 WO2023151418 A1 WO 2023151418A1
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WO
WIPO (PCT)
Prior art keywords
friction plate
electromagnet
moving coil
housing
sealing
Prior art date
Application number
PCT/CN2022/143667
Other languages
English (en)
French (fr)
Inventor
刘亚飞
薛超
奚卫宁
Original Assignee
纳恩博（北京）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
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Application filed by 纳恩博（北京）科技有限公司 filed Critical 纳恩博（北京）科技有限公司
Publication of WO2023151418A1 publication Critical patent/WO2023151418A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M7/00—Motorcycles characterised by position of motor or engine
    • B62M7/12—Motorcycles characterised by position of motor or engine with the engine beside or within the driven wheel
    • 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
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • 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
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/102—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction brakes

Definitions

  • the utility model relates to the technical field of scooter, in particular to a wheel hub motor and a scooter equipped with it.
  • Scooter-replacing vehicles such as scooters, balance vehicles, and electric vehicles are widely used means of transportation.
  • the scooter is equipped with a hub motor to drive the wheels to rotate, but when the hub motor is accidentally powered off, it is easy to slip the car, resulting in low safety, limited range of use, and poor practicability when the scooter is used. .
  • the utility model aims to solve one of the technical problems in the related art at least to a certain extent.
  • the embodiment of the utility model proposes an in-wheel motor that is helpful to realize power-off brake and has better safety.
  • the embodiment of the utility model also proposes a scooter.
  • the in-wheel motor includes: a motor body, the motor body includes a casing, a motor shaft, and a stator and a rotor arranged in the casing; the motor shaft is used to drive the rotor to rotate, and the motor shaft is used to drive the rotor to rotate.
  • the motor shaft passes through the casing, and the rotor is fixedly connected to the casing so that the casing can pivot relative to the motor shaft;
  • the brake assembly includes a main housing, an electromagnet, a dynamic ring and a first friction plate, the electromagnet is arranged in the main casing;
  • the moving ring is relatively fixed to the casing so as to be pivotable relative to the motor shaft;
  • the electromagnet has a power-off state and a power-on state , in the de-energized state, the first friction plate is in contact with the moving coil, and in the energized state, the first friction plate is separated from the moving coil by the magnetic force of the electromagnet.
  • the electromagnet when the in-wheel motor is energized and rotated, the electromagnet is in the energized state, so that the first friction plate is spaced from the moving coil, thereby not affecting the normal rotation of the in-wheel motor;
  • the electromagnet When the power is on, the electromagnet is adjusted to the power-off state, so that the first friction plate is in contact with the moving coil, so that the housing can be forced to stop rotating through the friction between the first friction plate and the moving coil, thereby helping to realize the in-wheel motor disconnection.
  • the function of electric automatic brake improves the safety of the hub motor.
  • the first friction plate is arranged between the moving coil and the electromagnet, and in the energized state, the electromagnet attracts the first friction plate so that the first friction The plate is away from the moving coil;
  • the brake assembly also includes an elastic member, and the elastic member is arranged between the first friction plate and the electromagnet; in the energized state, the first friction plate is Under the attraction of the electromagnet, the elastic member is pressed and moved toward the electromagnet to be away from the moving coil; in the de-energized state, the elastic member exerts force on the first friction plate toward the The elastic force of the moving coil makes the first friction plate close to the moving coil.
  • the brake assembly further includes a second friction plate, the second friction plate is arranged on the side of the moving ring away from the first friction plate;
  • the moving ring includes a ring body and a movable part, the movable part passes through the ring body and is movable along the axial direction of the ring body, and the thickness of the movable part in the axial direction of the ring body is greater than that of the ring body in the ring body thickness in the axial direction;
  • the first friction plate pushes the movable member to move along the axial direction of the ring body under the elastic force of the elastic member, so as to When the first friction plate is in contact with one side of the movable member, the other side of the movable member is in contact with the second friction plate.
  • the movable part is an armature, and the roughness of the movable part is greater than that of the moving coil; and/or, there are multiple movable parts.
  • the brake assembly further includes a threaded piece, and the threaded piece passes through the second friction plate sequentially, and passes through the second friction plate without affecting the pivoting of the moving coil around the motor shaft.
  • the moving coil is fixed on the main casing after passing through the first friction plate.
  • the elastic member is a spring, and the spring is sandwiched between the opening edge of the main housing and the first friction plate; and/or, the threaded member is fixed on the The edge of the opening of the main casing.
  • the housing includes a first section of casing and a second section of casing that are adjacent to each other, the stator and the rotor are packaged in the first section of casing, the first friction plate, the moving coil And the main casing is located in the second section shell, and an annular cavity is defined between the main casing and the second section casing;
  • the hub motor also includes a sealing assembly, and the sealing assembly is arranged on the within the annular cavity to seal the housing and components within the main housing.
  • the sealing assembly includes a grease layer and a plurality of sealing rings, the plurality of sealing rings are arranged at intervals along the axial direction of the annular cavity, and the grease layer is filled between adjacent sealing rings between.
  • the plurality of sealing rings include adjacent first sealing rings and second sealing rings; the inner peripheral wall of the first sealing ring abuts against the outer wall of the main housing, and the first sealing ring There is a first gap between the outer peripheral wall of the second sealing ring and the second shell, and there is a second gap between the inner peripheral wall of the second sealing ring and the main housing, and the outer peripheral wall of the second sealing ring and the The inner wall of the second section of shell abuts; the gap between the first sealing ring and the second sealing ring, the first gap and the second gap are all filled with grease.
  • first sealing rings and multiple second sealing rings there are multiple first sealing rings and multiple second sealing rings, and the multiple first sealing rings and the multiple second sealing rings are staggered along the axial direction of the annular cavity Arrangement; and/or, the inner edge of the first sealing ring is embedded in the groove on the outer wall of the main housing, and the outer edge of the second sealing ring is embedded in the groove on the inner wall of the second section shell .
  • the distance between the outer peripheral wall of the first sealing ring and the inner wall of the second shell is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; and/or, the second sealing ring The distance between the inner peripheral wall of the main housing and the outer wall of the main housing is greater than or equal to 1.5 mm and less than or equal to 2.5 mm; and/or, the distance between the adjacent first sealing ring and the second sealing ring The distance is greater than or equal to 0.5 mm and less than or equal to 1 mm.
  • the scooter according to the embodiment of the present utility model includes a wheel, and the wheel includes a tire and a hub motor, and the hub motor is the hub motor described in any one of the above embodiments, and the tire is sleeved on the shell the periphery.
  • the electromagnet when the wheel hub motor of the scooter is energized and rotated, the electromagnet is in the energized state, so that the first friction plate is spaced from the moving coil, thereby not affecting the normal rotation of the hub motor;
  • the electromagnet is adjusted to the power-off state, so that the first friction plate is in contact with the moving coil, so that the housing can be forced to stop rotating through the friction between the first friction plate and the moving coil, thereby helping to achieve The function of automatic brake when the hub motor is powered off improves the safety of the scooter.
  • Fig. 1 is a front view of an in-wheel motor according to an embodiment of the present invention.
  • Fig. 2 is a partial exploded view of an in-wheel motor according to an embodiment of the present invention.
  • Fig. 3 is a sectional view of an in-wheel motor according to an embodiment of the present invention.
  • Fig. 4 is an enlarged view of A in Fig. 3 .
  • Fig. 5 is an enlarged view of B in Fig. 3 .
  • Motor body 11. Shell; 111. First shell; 112. Second shell; 12. Motor shaft; 13. Annular cavity; 14. Stator; 15. Rotor;
  • Seal assembly 31. Seal ring; 311. First seal ring; 312. Second seal ring.
  • the in-wheel motor includes a motor body 1 and a brake assembly 2, and the motor body 1 includes a casing 11, a motor shaft 12, and a stator 14 and rotor 15.
  • the motor shaft 12 is used to drive the rotor 15 to rotate, and the motor shaft 12 passes through the casing 11, and the rotor 15 is fixedly connected to the casing 11 so that the casing 11 can pivot relative to the motor shaft 12.
  • the brake assembly 2 includes a main casing 28, an electromagnet 21, a moving coil 22 and a first friction plate 23.
  • the electromagnet 21 is arranged in the main casing 28, and the moving coil 22 is relatively fixed to the casing 11 so as to be pivotable relative to the motor shaft 12. Turning, the electromagnet 21 has a power-off state and a power-on state. When the electromagnet 21 is in the power-off state, the first friction plate 23 is in contact with the moving coil 22 . When the electromagnet 21 is energized, the first friction plate 23 is separated from the moving coil 22 by the magnetic force of the electromagnet 21, so that the normal rotation of the in-wheel motor will not be affected.
  • the first friction plate 23 can abut against the moving coil 22 through the magnetic force of the electromagnet 21, or the first friction plate 23 can contact the moving coil through other forms of external force. 22 abutments.
  • the moving coil 22 is relatively fixed to the housing 11 , it can be understood that the moving coil 22 can rotate synchronously with the housing 11 .
  • the moving coil 22 is directly connected to the housing 11 , or the moving coil 22 is connected to the housing 11 through other components.
  • the electromagnet 21 when the hub motor is energized and rotated, the electromagnet 21 is in the energized state, so that the first friction plate 23 is separated from the moving coil 22, so that the normal rotation of the hub motor will not be affected;
  • the electromagnet 21 is adjusted to the power-off state, so that the first friction plate 23 abuts against the moving coil 22, so that the housing 11 can be forced to stop rotating through the friction between the first friction plate 23 and the moving coil 22 , which in turn helps to realize the function of automatic brake when the hub motor is powered off, and improves the safety of the hub motor when it is used.
  • the in-wheel motor in one embodiment of the present invention can detect the power on and off of the motor body 1 through the controller, and when the controller detects that the motor body 1 is powered on, the controller can adjust the electromagnet 21 to be powered on state, so that the first friction plate 23 is separated from the moving coil 22 .
  • the controller detects that the motor body 1 is powered off, the controller can adjust the electromagnet 21 to a power-off state, so that the first friction plate 23 is in close contact with the moving coil 22 .
  • the controller can be a circuit board module.
  • the first friction plate 23 is disposed between the moving coil 22 and the electromagnet 21 , and when the electromagnet 21 is energized, the electromagnet 21 attracts the first friction plate 23 To make the first friction plate 23 away from the moving coil 22 . It can be understood that, when the electromagnet 21 is in the energized state, the electromagnet 21 generates a magnetic attraction to attract the first friction plate 23, so that the first friction plate 23 moves away from the moving coil 22, thereby avoiding the first friction plate 23 It is in contact with the moving coil 22, so as not to affect the normal rotation of the hub motor.
  • the first friction plate 23, the moving coil 22 and the electromagnet 21 may be arranged in other ways.
  • the moving coil 22 is arranged between the first friction plate 23 and the electromagnet 21.
  • the electromagnet 21 repels the first friction plate 23 through magnetic force so that the first friction plate 23 is away from the moving coil. 22, so as to prevent the first friction plate 23 from contacting the moving coil 22, thereby not affecting the normal rotation of the in-wheel motor.
  • the electromagnet 21 is powered off, the first friction plate 23 contacts the moving coil 22 , so that the housing 11 can be forced to stop rotating through the friction between the first friction plate 23 and the moving coil 22 .
  • the brake assembly 2 further includes an elastic member 24 disposed between the first friction plate 23 and the electromagnet 21 .
  • the electromagnet 21 When the electromagnet 21 is in the energized state, the first friction plate 23 presses the elastic member 24 under the attraction of the electromagnet 21, and moves toward the electromagnet 21, so as to be away from the moving coil 22.
  • the electromagnet 21 When the electromagnet 21 is in the de-energized state, the elastic member 24 exerts an elastic force on the first friction plate 23 toward the moving coil 22 , so that the first friction plate 23 is close to the moving coil 22 and abuts against the moving coil 22 .
  • the electromagnet 21 when the electromagnet 21 is in the energized state, the electromagnet 21 generates a magnetic attraction to attract the first friction plate 23, so that the first friction plate 23 moves away from the moving coil 22, and the elastic member 24 is compressed and Has elastic potential energy.
  • the electromagnet 21 When the electromagnet 21 is in the power-off state, the magnetism of the electromagnet 21 disappears, and the elastic potential energy of the elastic member 24 is released to push the first friction plate 23 to move toward the direction close to the moving coil 22, so that the first friction plate 23 and the moving coil 22 abutments.
  • the in-wheel motor according to an embodiment of the utility model can improve the reliability of the brake assembly 2 by arranging the elastic member 24, and has a simple structure, which is convenient for the processing and manufacture of the in-wheel motor.
  • the brake assembly 2 further includes a second friction plate 25, and the second friction plate 25 is arranged on the side of the moving coil 22 away from the first friction plate 23 (as shown in FIG. 3
  • the left end of the moving coil 22) the moving coil 22 includes a ring body 221 and a movable part 222, the movable part 222 is penetrated on the ring body 221 and can move along the axial direction of the ring body 221, and the movable part 222 is on the axis of the ring body 221
  • the upward thickness is greater than the thickness of the ring body 221 in the axial direction of the ring body 221 .
  • the first friction plate 23 pushes the movable member 222 to move along the axial direction of the ring body 221 under the elastic force of the elastic member 24, so that the first friction plate 23 and the movable member 222 are on one side In the case of abutting, the other side of the movable member 222 is made to abut against the second friction plate 25 . It can be understood that when the electromagnet 21 is in the power-off state, the first friction plate 23 and the second friction plate 25 can abut against the left and right sides of the movable member 222 at the same time, thereby further improving the braking effect of the in-wheel motor , making the hub motor more sensitive when braking.
  • the movable piece 222 is an armature, and the roughness of the movable piece 222 is greater than that of the moving ring 22 , so the first friction plate 23 and the second friction plate 25 press against the movable piece 222 It can have a greater friction force to better hold the moving coil 22, so that when the hub motor is powered off, it can have a better braking effect and the hub motor has higher sensitivity when braking.
  • the electromagnet 21 When the electromagnet 21 is in the energized state, the movable part 222 moves toward the electromagnet 21 through the magnetic force of the electromagnet 21, so that the movable part 222 is spaced apart from the second friction plate 25, thereby avoiding the movement when the in-wheel motor rotates normally.
  • the ring 22 is in contact with the second friction plate 25, thereby making the structure of the in-wheel motor more reasonable.
  • the plurality of movable parts 222 are arranged at intervals along the circumference of the ring body 221, so as to further improve the braking effect of the hub motor and make the hub motor more sensitive when braking.
  • the brake assembly further includes a threaded member 26.
  • the threaded member 26 passes through the second friction plate 25 in sequence, and passes through the moving coil without affecting the pivoting of the moving coil 22 around the motor shaft 12. 22, and pass through the first friction plate 23 and be fixed on the main casing 28.
  • there are a plurality of threaded members 26 and the plurality of threaded members 26 are arranged at intervals along the circumferential direction of the main casing 28 . It can be understood that a large circular hole is opened in the middle of the moving coil 22 , and a plurality of screw members 26 pass through the circular holes in the middle of the moving coil 22 without affecting the pivoting of the moving coil 22 around the motor shaft 12 .
  • the threaded member 26 is provided with a shaft sleeve 27, the outer peripheral wall of the shaft sleeve 27 cooperates with the through hole on the first friction plate 23, the inner peripheral wall of the shaft sleeve 27 cooperates with the threaded member 26, and the first friction plate 23 can It can move along the axial direction of the shaft sleeve 27, so that the brake assembly 2 is more sensitive in action and has higher reliability in use.
  • the elastic member 24 is a spring, and the spring is clamped between the edge of the opening of the main housing 28 and the first friction plate 23 , and the threaded member 26 is fixed on the edge of the opening of the main housing 28 .
  • a plurality of installation grooves are arranged at intervals in the circumferential direction of the opening edge of the main housing 28, and there are a plurality of elastic members 24, and the plurality of elastic members 24 are respectively arranged in the plurality of installation grooves, thereby facilitating the installation of the elastic members 24. and fixed.
  • the housing 11 includes a first segment shell 111 and a second segment shell 112 that are adjacently connected to each other.
  • the second segment shell 112 is formed by extending from the peripheral wall of the first segment shell 111 , that is, the first section shell 111 and the second section shell 112 are integrally formed.
  • the stator 14 and the rotor 15 are packaged in the first section shell 111, the first friction plate 23, the moving coil 22 and the main casing 28 are located in the second section casing 112, between the main casing 28 and the second section casing 112
  • An annular cavity 13 is defined.
  • the in-wheel motor also includes a sealing assembly 3 , which is arranged in the annular cavity 13 to seal the components in the housing 11 and the main housing 28 .
  • the components inside the housing 11 and the main housing 28 may be parts such as conductive lines, circuit boards or bearings.
  • the in-wheel motor of an embodiment of the utility model can improve the waterproof performance of the in-wheel motor by setting the sealing assembly 3, so that the use range of the in-wheel motor is wider.
  • the sealing assembly 3 includes a grease layer and a single sealing ring 31, for example, the cross section of the single sealing ring 31 is O-shaped, the single sealing ring 31 is located in the annular cavity 13, and the inner side of the single sealing ring 31 is in contact with the main shell The body 28 abuts, the outer side of the single sealing ring 31 abuts against the housing 11, and the grease layer is filled around the single sealing ring 31, thereby improving the waterproof performance of the in-wheel motor.
  • the sealing assembly 3 includes a grease layer and a plurality of sealing rings 31 , and the plurality of sealing rings 31 are spaced along the axial direction of the annular cavity 13 (the left-right direction in FIG. 3 ). arrangement, the grease layer is filled between adjacent sealing rings 31 , and the hub motor according to an embodiment of the present invention can further improve the waterproof performance of the hub motor by setting the sealing assembly 3 as the above-mentioned structure.
  • the plurality of sealing rings 31 include adjacent first sealing rings 311 and second sealing rings 312, the inner peripheral wall of the first sealing ring 311 abuts against the outer wall of the main housing 28, and the outer peripheral wall of the first sealing ring 311 There is a first gap L1 between the second section shell 112, a second gap L1 exists between the inner peripheral wall of the second sealing ring 312 and the main housing 28, and the outer peripheral wall of the second sealing ring 312 and the second section shell 112 The inner walls abut against each other, and the gap between the first sealing ring 311 and the second sealing ring 312, the first gap and the second gap are all filled with grease, so that a meandering labyrinth channel can be formed in the annular cavity 13, and the sealing assembly 3 can be improved. sealing effect.
  • the inner edge of the first sealing ring 311 fits into the groove on the outer wall of the main casing 28
  • the outer edge of the second sealing ring 312 fits into the groove on the inner wall of the second section shell 112 . Since the part of the adjacent sealing ring 31 embedded in the groove is not on the same side as the part contacting the grease, the hub motor can have a better waterproof effect.
  • a plurality of first sealing rings 311 and a plurality of second sealing rings 312 are arranged staggeredly and at intervals along the axial direction of the annular cavity 13 .
  • the number of the first sealing rings 311 is greater than the number of the second sealing rings 312 , so as to facilitate the assembly work of the sealing assembly 3 .
  • FIG. 5 there are two first sealing rings 311 and one second sealing ring 312 , and the second sealing ring 312 is disposed between the two first sealing rings 311 .
  • the first gap between the outer peripheral wall of the first sealing ring 311 and the inner wall of the second section shell 312 is L1
  • the outer peripheral wall of the first sealing ring 311 and the inner wall of the second section shell 112 The first gap L1 between them is greater than or equal to 1.5 mm and less than or equal to 2.5 mm.
  • the second gap between the inner peripheral wall of the second sealing ring 312 and the outer wall of the main housing 28 is L2
  • the second gap L2 between the inner peripheral wall of the second sealing ring 312 and the outer wall of the main housing 28 is greater than or equal to 1.5 mm less than or equal to 2.5 mm.
  • the inventors of the present application found through experimental research that when the first gap L1 between the outer peripheral wall of the first sealing ring 311 and the inner wall of the second section shell 112 and the inner peripheral wall of the second sealing ring 312 and the main housing 28 When the second gap L2 satisfies the above range, the sealing effect of the sealing assembly 3 of the in-wheel motor according to an embodiment of the present invention is better.
  • L1 is 1.5 mm, 2.0 mm, 2.5 mm
  • L2 is 1.5 mm, 2.0 mm, 2.5 mm.
  • the distance L3 between adjacent first sealing rings 311 and second sealing rings 312 is greater than or equal to 0.5 mm and less than or equal to 1 mm.
  • the inventors of the present application found through experimental research that when the distance L3 between adjacent sealing rings 31 satisfies the above range, the sealing effect of the sealing assembly 3 of the in-wheel motor according to an embodiment of the present invention is better.
  • L3 is 0.5mm, 0.8mm, 1.0mm.
  • the scooter according to another embodiment of the present invention includes wheels, and the wheels include tires (not shown) and in-wheel motors, the in-wheel motors are in-wheel motors according to an embodiment of the present invention, and the tires are sheathed on the outer periphery of the housing 11 .
  • the scooter of the embodiment of the utility model can be a balance car or a scooter.
  • the electromagnet 21 when the hub motor of the scooter is energized and rotated, the electromagnet 21 is in an electrified state, so that the first friction plate 23 is spaced from the moving coil 22, thereby not affecting the normal operation of the hub motor Rotation; when the hub motor is powered off, the electromagnet 21 is adjusted to the power-off state, so that the first friction plate 23 abuts against the moving coil 22, so that the shell can be forced by the friction between the first friction plate 23 and the moving coil 22 11 stops the rotation, and then helps to realize the function of the automatic brake when the hub motor is powered off, and improves the safety of the scooter when it is used.
  • 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.
  • the features defined as “first” and “second” may explicitly or implicitly include at least one of these features.
  • “plurality” means at least two, such as two, three, etc., unless otherwise specifically defined.
  • connection In this utility model, unless otherwise clearly specified and limited, the terms “installation”, “connection”, “connection”, “fixation” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. Connected, or integrated; it can be mechanically connected, or electrically connected, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediary, and it can be the internal communication of two components or the interaction relationship between two components , unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model according to specific situations.
  • the first feature may be in direct contact with the first feature or the first feature and the second feature through an intermediary indirect contact.
  • “above”, “above” and “above” the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
  • “Below”, “beneath” and “beneath” the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • the terms “one embodiment”, “some embodiments”, “example”, “specific examples”, or “some examples” mean specific features, structures, materials described in connection with the embodiment or example Or features are included in at least one embodiment or example of the invention.
  • the schematic representations of the above terms are not necessarily directed to the same embodiment or example.
  • the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
  • those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)

Abstract

一种轮毂电机和具有其的代步车，所述轮毂电机包括：电机本体（1），所述电机本体（1）包括外壳（11）、电机轴（12）及设置于所述外壳（11）内的定子（14）和转子（15）；所述电机轴（12）用于带动所述转子（15）转动，所述电机轴（12）穿出于所述外壳（11），所述转子（15）与所述外壳（11）固定连接以使所述外壳（11）相对所述电机轴（12）可枢转；抱闸组件（2），所述抱闸组件（2）包括主壳体（28）、电磁铁（21）、动圈（22）和第一摩擦片（23），所述电磁铁（21）设置于所述主壳体（28）内；所述动圈（22）与所述外壳（11）相对固定以相对所述电机轴（12）可枢转；所述电磁铁（21）具有断电状态和通电状态，在所述断电状态，所述第一摩擦片（23）与所述动圈（22）抵接，在所述通电状态，所述第一摩擦片（23）通过所述电磁铁（21）的磁力作用与所述动圈（22）分离开。该轮毂电机有助于实现断电抱闸、安全性较好。

Description

轮毂电机和具有其的代步车
本申请要求于2022年02月10日提交中国专利局、申请号为202220274589.4、申请名称为“轮毂电机和具有其的代步车”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本实用新型涉及代步车的技术领域，具体地，涉及一种轮毂电机和具有其的代步车。
背景技术
诸如滑板车、平衡车、电动车的代步车是广泛使用的代步工具。其中，代步车上均设有轮毂电机以用于带动车轮转动，但是当轮毂电机意外断电时容易溜车，致使代步工具使用时存在安全性低、使用范围受限、实用性较差等问题。
实用新型内容
本实用新型旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本实用新型的实施例提出一种有助于实现断电抱闸、安全性较好的轮毂电机。
本实用新型的实施例还提出一种代步车。
根据本实用新型的实施例的轮毂电机包括：电机本体，所述电机本体包括外壳、电机轴及设置于所述外壳内的定子和转子；所述电机轴用于带动所述转子转动，所述电机轴穿出于所述外壳，所述转子与所述外壳固定连接以使所述外壳相对所述电机轴可枢转；抱闸组件，所述抱闸组件包括主壳体、电磁铁、动圈和第一摩擦片，所述电磁铁设置于所述主壳体内；所述动圈与所述外壳相对固定以相对所述电机轴可枢转；所述电磁铁具有断电状态和通电状态，在所述断电状态，所述第一摩擦片与所述动圈抵接，在所述通电状态，所述第一摩擦片通过所述电磁铁的磁力作用与所述动圈分离开。
根据本实用新型的实施例的轮毂电机，在轮毂电机通电转动时，电磁铁处于通电状态，以使得第一摩擦片与动圈间隔开，从而不会影响轮毂电机的正常转动；当轮毂电机断电时，电磁铁调整至断电状态，以使得第一摩擦片与动圈抵接，从而可以通过第一摩擦片与动圈之间的摩擦迫使外壳停止转动，进而有助于实现轮毂电机断电自动抱闸的功能，提高了轮毂电机使用时的安全性。
在一些实施例中，所述第一摩擦片设于所述动圈和所述电磁铁之间，在所述通电状态，所述电磁铁吸引所述第一摩擦片以使所述第一摩擦片远离所述动圈；所述抱闸组件还包括 弹性件，所述弹性件设于所述第一摩擦片和所述电磁铁之间；在所述通电状态，所述第一摩擦片在所述电磁铁吸引作用下压迫所述弹性件，并朝向所述电磁铁移动，以远离所述动圈；在所述断电状态，所述弹性件对所述第一摩擦片施加朝向所述动圈的弹力，以使所述第一摩擦片靠近所述动圈。
在一些实施例中，所述抱闸组件还包括第二摩擦片，所述第二摩擦片设于所述动圈远离所述第一摩擦片的一侧；所述动圈包括圈体和活动件，所述活动件穿设于所述圈体且沿所述圈体的轴向可移动，所述活动件在所述圈体的轴向上的厚度大于所述圈体在所述圈体的轴向上的厚度；在所述电磁铁为断电状态时，所述第一摩擦片在所述弹性件的弹力作用下推动所述活动件沿所述圈体的轴向移动，以在所述第一摩擦片与所述活动件的一侧抵接的情况下使所述活动件的另一侧与所述第二摩擦片抵接。
在一些实施例中，所述活动件为衔铁，所述活动件的粗糙度大于所述动圈的粗糙度；和/或，所述活动件为多个。
在一些实施例中，所述抱闸组件还包括螺纹件，所述螺纹件依次穿过所述第二摩擦片、在不影响所述动圈绕所述电机轴枢转的情况下穿过所述动圈、以及穿过所述第一摩擦片后固定于所述主壳体上。
在一些实施例中，所述弹性件为弹簧，所述弹簧夹设于所述主壳体的开口边沿部与所述第一摩擦片之间；和/或，所述螺纹件固定于所述主壳体的开口边沿部。
在一些实施例中，所述外壳包括相互邻接连接的第一段壳和第二段壳，所述定子和所述转子封装于第一段壳内，所述第一摩擦片、所述动圈及所述主壳体位于所述第二段壳内，所述主壳体与所述第二段壳之间限定出环形腔；所述轮毂电机还包括密封组件，所述密封组件设于所述环形腔内以密封所述外壳和所述主壳体内的部件。
在一些实施例中，所述密封组件包括油脂层和多个密封圈，多个所述密封圈沿所述环形腔的轴向间隔布置，所述油脂层填充在相邻的所述密封圈之间。
在一些实施例中，所述多个密封圈包括相邻的第一密封圈和第二密封圈；所述第一密封圈的内周壁与所述主壳体外壁抵接，所述第一密封圈的外周壁与所述第二段壳之间存在第一间隙，所述第二密封圈的内周壁与所述主壳体之间存在第二间隙，所述第二密封圈的外周壁与所述第二段壳的内壁抵接；所述第一密封圈与所述第二密封圈之间、所述第一间隙及所述第二间隙均填充有油脂。
在一些实施例中，所述第一密封圈和所述第二密封圈均为多个，多个所述第一密封圈和多个所述第二密封圈沿所述环形腔的轴向交错布置；和/或，所述第一密封圈的内边缘嵌入所述主壳体的外壁上的凹槽，所述第二密封圈的外边缘嵌入所述第二段壳的内壁上的凹槽。
在一些实施例中，所述第一密封圈的外周壁与所述第二段壳的内壁之间的距离大于或等于1.5毫米且小于或等于2.5毫米；和/或，所述第二密封圈的内周壁与所述主壳体的外壁之间的距离大于或等于1.5毫米且小于或等于2.5毫米；和/或，相邻的所述第一密封圈和所述第二密封圈之间的距离大于或等于0.5毫米且小于或等于1毫米。
根据本实用新型的实施例的代步车，包括车轮，所述车轮包括车胎和轮毂电机，所述轮毂电机为上述实施例中任一项所述的轮毂电机，所述车胎套设在所述外壳的外周。
根据本实用新型的实施例的代步车，在代步车的轮毂电机通电转动时，电磁铁处于通电状态，以使得第一摩擦片与动圈间隔开，从而不会影响轮毂电机的正常转动；当轮毂电机断电时，电磁铁调整至断电状态，以使得第一摩擦片与动圈抵接，从而可以通过第一摩擦片与动圈之间的摩擦迫使外壳停止转动，进而有助于实现轮毂电机断电自动抱闸的功能，提高了代步车使用时的安全性。
附图说明
图1是本实用新型一实施例的轮毂电机的主视图。
图2是本实用新型一实施例的轮毂电机的局部爆炸图。
图3是本实用新型一实施例的轮毂电机的剖视图。
图4是图3中A的放大图。
图5是图3中B的放大图。
附图标记：
1、电机本体；11、外壳；111、第一段壳；112、第二段壳；12、电机轴；13、环形腔；14、定子；15、转子；
2、抱闸组件；21、电磁铁；22、动圈；221、圈体；222、活动件；23、第一摩擦片；24、弹性件；25、第二摩擦片；26、螺纹件；27、轴套；28、主壳体；
3、密封组件；31、密封圈；311、第一密封圈；312、第二密封圈。
具体实施方式
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出。下面通过参考附图描述的实施例是示例性的，旨在用于解释本实用新型，而不能理解为对本实用新型的限制。
下面参考附图1-5描述根据本实用新型的实施例的轮毂电机和具有其的代步车。
如图1至图5所示，根据本实用新型的实施例的轮毂电机，包括电机本体1和抱闸组件2，电机本体1包括外壳11、电机轴12及设置于外壳11内的定子14和转子15。电机轴12用于带动转子15转动，电机轴12穿出于外壳11，转子15与外壳11固定连接以使 外壳11相对电机轴12可枢转。
抱闸组件2包括主壳体28、电磁铁21、动圈22和第一摩擦片23，电磁铁21设置于主壳体28内，动圈22与外壳11相对固定以相对电机轴12可枢转，电磁铁21具有断电状态和通电状态，在电磁铁21为断电状态时，第一摩擦片23与动圈22抵接。在电磁铁21为通电状态时，第一摩擦片23通过电磁铁21的磁力作用与动圈22分离开，从而不会影响轮毂电机的正常转动。
可以理解的是，在电磁铁21为断电状态时，第一摩擦片23可以通过电磁铁21的磁力作用与动圈22抵接，或者第一摩擦片23可以通过其他形式的外力与动圈22抵接。
另外，动圈22与外壳11相对固定，可以理解为，动圈22可以随外壳11同步转动。例如，动圈22直接与外壳11相连，或者动圈22通过其他部件与外壳11相连。
根据本实用新型一实施例的轮毂电机，在轮毂电机通电转动时，电磁铁21处于通电状态，以使得第一摩擦片23与动圈22间隔开，从而不会影响轮毂电机的正常转动；当轮毂电机断电时，电磁铁21调整至断电状态，以使得第一摩擦片23与动圈22抵接，从而可以通过第一摩擦片23与动圈22之间的摩擦迫使外壳11停止转动，进而有助于实现轮毂电机断电自动抱闸的功能，提高了轮毂电机使用时的安全性。
可以理解的是，本实用新型一实施例的轮毂电机可通过控制器检测电机本体1的通电和断电情况，当控制器检测到电机本体1通电时，控制器可以将电磁铁21调整为通电状态，以使第一摩擦片23与动圈22分离开。当控制器检测到电机本体1断电时，控制器可以将电磁铁21调整为断电状态，以使第一摩擦片23与动圈22抵紧。例如，控制器可以为电路板模组。
在一些实施例中，如图2至图4所示，第一摩擦片23设于动圈22和电磁铁21之间，在电磁铁21为通电状态时，电磁铁21吸引第一摩擦片23以使第一摩擦片23远离动圈22。可以理解的是，在电磁铁21为通电状态时，电磁铁21产生磁性吸力以吸引第一摩擦片23，使得第一摩擦片23朝向远离动圈22的方向移动，从而避免第一摩擦片23与动圈22接触，进而不会影响轮毂电机的正常转动。
可选地，第一摩擦片23、动圈22和电磁铁21可以采用其他方式布置。例如，动圈22设置在第一摩擦片23和电磁铁21之间，在电磁铁21为通电状态时，电磁铁21通过磁力作用排斥第一摩擦片23以使第一摩擦片23远离动圈22，从而避免第一摩擦片23与动圈22接触，进而不会影响轮毂电机的正常转动。在电磁铁21为断电状态时，第一摩擦片23与动圈22抵接，从而可以通过第一摩擦片23与动圈22之间的摩擦迫使外壳11停止转动。
如图2和图3所示，抱闸组件2还包括弹性件24，弹性件24设于第一摩擦片23和电磁铁21之间。在电磁铁21为通电状态时，第一摩擦片23在电磁铁21吸引作用下压迫弹 性件24，并朝向电磁铁21移动，以远离动圈22。在电磁铁21为断电状态时，弹性件24对第一摩擦片23施加朝向动圈22的弹力，以使第一摩擦片23靠近动圈22且与动圈22抵接。
可以理解的是，在电磁铁21为通电状态时，电磁铁21产生磁性吸力以吸引第一摩擦片23，使得第一摩擦片23朝向远离动圈22的方向移动，且弹性件24被压缩且具有弹性势能。在电磁铁21为断电状态时，电磁铁21的磁性消失，弹性件24的弹性势能释放从而推动第一摩擦片23朝向靠近动圈22的方向移动，以使得第一摩擦片23与动圈22抵接。本实用新型一实施例的轮毂电机通过设置弹性件24可以提高抱闸组件2动作时的可靠性，且结构简单，便于轮毂电机的加工和制造。
在一些实施例中，如图2至图4所示，抱闸组件2还包括第二摩擦片25，第二摩擦片25设于动圈22远离第一摩擦片23的一侧(如图3中动圈22的左端)，动圈22包括圈体221和活动件222，活动件222穿设于圈体221上且沿圈体221的轴向可移动，活动件222在圈体221的轴向上的厚度大于圈体221在圈体221的轴向上的厚度。在电磁铁21为断电状态时，第一摩擦片23在弹性件24的弹力作用下推动活动件222沿圈体221的轴向移动，以在第一摩擦片23与活动件222的一侧抵接的情况下使活动件222的另一侧与第二摩擦片25抵接。可以理解的是，在电磁铁21为断电状态时，第一摩擦片23和第二摩擦片25可以同时抵接在活动件222的左右两侧，从而可以进一步地提高轮毂电机的抱闸效果，使得轮毂电机制动时更加灵敏。
可选地，如图2和图4所示，活动件222为衔铁，活动件222的粗糙度大于动圈22的粗糙度，因此第一摩擦片23和第二摩擦片25抵紧活动件222时可以具有更大摩擦力，以更好地抱紧动圈22，从而使得轮毂电机断电时可以起到更好的抱闸效果且轮毂电机制动时的灵敏性较高。而在电磁铁21为通电状态时，活动件222通过电磁铁21的磁力作用朝向电磁铁21移动，以使活动件222与第二摩擦片25间隔开，从而可以在轮毂电机正常转动时避免动圈22与第二摩擦片25接触，进而使得轮毂电机的结构更加合理。
可选地，活动件222为多个，多个活动件222沿圈体221的周向间隔布置，从而可以进一步提高轮毂电机的抱闸效果，使得轮毂电机制动时更加灵敏。
可选地，如图2所示，抱闸组件还包括螺纹件26，螺纹件26依次穿过第二摩擦片25、在不影响动圈22绕电机轴12枢转的情况下穿过动圈22、以及穿过第一摩擦片23后固定于主壳体28上。例如，螺纹件26为多个，多个螺纹件26沿主壳体28的周向间隔布置。可以理解的是，动圈22的中部开设有较大的圆孔，多个螺纹件26穿过动圈22中部的圆孔且不会影响动圈22绕电机轴12枢转。
具体地，螺纹件26上设有轴套27，轴套27的外周壁与第一摩擦片23上的通孔配合， 轴套27的内周壁与螺纹件26配合，且第一摩擦片23可以沿轴套27的轴向可移动，从而使得抱闸组件2动作时更加灵敏，使用时的可靠性较高。
可选地，弹性件24为弹簧，弹簧夹设于主壳体28的开口边沿部与第一摩擦片23之间，螺纹件26固定于主壳体28的开口边沿部。例如，主壳体28的开口边沿部的周向间隔布置有多个安装槽，弹性件24为多个，多个弹性件24分别设置在多个安装槽内，从而便于对弹性件24进行安装和固定。
在一些实施例中，如图2至图4所示，外壳11包括相互邻接连接的第一段壳111和第二段壳112，例如，第二段壳112从第一段壳111周壁延伸形成，即第一段壳111和第二段壳112一体成型。其中，定子14和转子15封装于第一段壳111内，第一摩擦片23、动圈22及主壳体28位于第二段壳112内，主壳体28与第二段壳112之间限定出环形腔13。
轮毂电机还包括密封组件3，密封组件3设于环形腔13内以密封外壳11和主壳体28内的部件。例如，外壳11和主壳体28内的部件可以为导电线路、电路板或轴承等零件。本实用新型一实施例的轮毂电机通过设置密封组件3可以提高轮毂电机的防水性能，使得轮毂电机的使用范围更广。
在一些实施例中，密封组件3包括油脂层和单个密封圈31，例如，单个密封圈31的截面为O形，单个密封圈31位于环形腔13内，且单个密封圈31的内侧与主壳体28抵接，单个密封圈31的外侧与外壳11抵接，油脂层填充在单个密封圈31的四周，从而可以提高轮毂电机的防水性能。
在另一些实施例中，如图3至图5所示，密封组件3包括油脂层和多个密封圈31，多个密封圈31沿环形腔13的轴向(如图3的左右方向)间隔布置，油脂层填充在相邻的密封圈31之间，本实用新型一实施例的轮毂电机通过将密封组件3设置为上述结构，可以进一步地提高轮毂电机的防水性能。
可选地，多个密封圈31包括相邻的第一密封圈311和第二密封圈312，第一密封圈311的内周壁与主壳体28外壁抵接，第一密封圈311的外周壁与第二段壳112之间存在第一间隙L1，第二密封圈312的内周壁与主壳体28之间存在第二间隙L1，第二密封圈312的外周壁与第二段壳112的内壁抵接，第一密封圈311与第二密封圈312之间、第一间隙及第二间隙均填充有油脂，从而可以使得环形腔13内形成蜿蜒的迷宫式通道，提高了密封组件3的密封效果。
可选地，第一密封圈311的内边缘嵌入主壳体28的外壁上的凹槽，第二密封圈312的外边缘嵌入第二段壳112的内壁上的凹槽。由于相邻密封圈31的嵌入凹槽内的部分和接触油脂的部分不在同一侧，从而可以使得轮毂电机具有较好的防水效果。
可选地，如图3至图5所示，第一密封圈311为一个或多个，第二密封圈312为一个 或多个。例如，多个第一密封圈311和多个第二密封圈312沿环形腔13的轴向交错且间隔布置。可选地，第一密封圈311的数量多于第二密封圈312的数量，从而便于密封组件3的装配工作。
又例如，如图5所示，第一密封圈311为两个，第二密封圈312为一个，第二密封圈312设于两个第一密封圈311之间。
具体地，如图5所示，第一密封圈311的外周壁与第二段壳312的内壁之间的第一间隙为L1，第一密封圈311的外周壁与第二段壳112的内壁之间的第一间隙L1大于或等于1.5毫米小于或等于2.5毫米。第二密封圈312的内周壁与主壳体28的外壁之间的第二间隙为L2，第二密封圈312的内周壁与主壳体28的外壁之间的第二间隙L2大于或等于1.5毫米小于或等于2.5毫米。
本申请的发明人通过试验研究发现，当第一密封圈311的外周壁与第二段壳112的内壁之间的第一间隙L1和第二密封圈312的内周壁与主壳体28之间的第二间隙L2满足上述范围时，本实用新型一实施例的轮毂电机的密封组件3的密封效果较好。例如，L1为1.5毫米、2.0毫米、2.5毫米，L2为1.5毫米、2.0毫米、2.5毫米。
可选地，如图5所示，相邻的第一密封圈311和第二密封圈312之间的距离L3大于或等于0.5毫米小于或等于1毫米。本申请的发明人通过试验研究发现，当相邻密封圈31之间的距离L3满足上述范围时，本实用新型一实施例的轮毂电机的密封组件3的密封效果较好。例如，L3为0.5毫米、0.8毫米、1.0毫米。
根据本发明的另一实施例的代步车包括车轮，车轮包括车胎(未示出)和轮毂电机，轮毂电机为本实用新型实施例的轮毂电机，车胎套设在外壳11的外周。本实用新型的实施例的代步车可以为平衡车或滑板车。
根据本实用新型的实施例的代步车，在代步车的轮毂电机通电转动时，电磁铁21处于通电状态，以使得第一摩擦片23与动圈22间隔开，从而不会影响轮毂电机的正常转动；当轮毂电机断电时，电磁铁21调整至断电状态，以使得第一摩擦片23与动圈22抵接，从而可以通过第一摩擦片23与动圈22之间的摩擦迫使外壳11停止转动，进而有助于实现轮毂电机断电自动抱闸的功能，提高了代步车使用时的安全性。
在本实用新型的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“内”、“外”、“顺时针”、“逆时针”、“轴向”、“径向”、“周向”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本实用新型和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本实用新型的限制。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本实用新型的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。
在本实用新型中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接或彼此可通讯；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本实用新型中的具体含义。
在本实用新型中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实用新型中，术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本实用新型的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不必须针对的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任一个或多个实施例或示例中以合适的方式结合。此外，在不相互矛盾的情况下，本领域的技术人员可以将本说明书中描述的不同实施例或示例以及不同实施例或示例的特征进行结合和组合。
尽管上面已经示出和描述了本实用新型的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本实用新型的限制，本领域的普通技术人员在本实用新型的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (12)

  1. 一种轮毂电机，其特征在于，包括：
    电机本体，所述电机本体包括外壳、电机轴及设置于所述外壳内的定子和转子；所述电机轴用于带动所述转子转动，所述电机轴穿出于所述外壳，所述转子与所述外壳固定连接以使所述外壳相对所述电机轴可枢转；
    抱闸组件，所述抱闸组件包括主壳体、电磁铁、动圈和第一摩擦片，所述电磁铁设置于所述主壳体内；所述动圈与所述外壳相对固定以相对所述电机轴可枢转；所述电磁铁具有断电状态和通电状态，在所述断电状态，所述第一摩擦片与所述动圈抵接，在所述通电状态，所述第一摩擦片通过所述电磁铁的磁力作用与所述动圈分离开。
  2. 根据权利要求1所述的轮毂电机，其特征在于，所述第一摩擦片设于所述动圈和所述电磁铁之间，在所述通电状态，所述电磁铁吸引所述第一摩擦片以使所述第一摩擦片远离所述动圈；
    所述抱闸组件还包括弹性件，所述弹性件设于所述第一摩擦片和所述电磁铁之间；在所述通电状态，所述第一摩擦片在所述电磁铁吸引作用下压迫所述弹性件，并朝向所述电磁铁移动，以远离所述动圈；在所述断电状态，所述弹性件对所述第一摩擦片施加朝向所述动圈的弹力，以使所述第一摩擦片靠近所述动圈。
  3. 根据权利要求2所述的轮毂电机，其特征在于，所述抱闸组件还包括第二摩擦片，所述第二摩擦片设于所述动圈远离所述第一摩擦片的一侧；
    所述动圈包括圈体和活动件，所述活动件穿设于所述圈体且沿所述圈体的轴向可移动，所述活动件在所述圈体的轴向上的厚度大于所述圈体在所述圈体的轴向上的厚度；在所述电磁铁为断电状态时，所述第一摩擦片在所述弹性件的弹力作用下推动所述活动件沿所述圈体的轴向移动，以在所述第一摩擦片与所述活动件的一侧抵接的情况下使所述活动件的另一侧与所述第二摩擦片抵接。
  4. 根据权利要求3所述的轮毂电机，其特征在于，所述活动件为衔铁，所述活动件的粗糙度大于所述动圈的粗糙度；和/或，所述活动件为多个。
  5. 根据权利要求3所述的轮毂电机，其特征在于，所述抱闸组件还包括螺纹件，所述螺纹件依次穿过所述第二摩擦片、在不影响所述动圈绕所述电机轴枢转的情况下穿过所述动圈、以及穿过所述第一摩擦片后固定于所述主壳体上。
  6. 根据权利要求5所述的轮毂电机，其特征在于，所述弹性件为弹簧，所述弹簧夹设于所述主壳体的开口边沿部与所述第一摩擦片之间；和/或，所述螺纹件固定于所述主壳体的开口边沿部。
  7. 根据权利要求1至6中任一项所述的轮毂电机，其特征在于，所述外壳包括相互 邻接连接的第一段壳和第二段壳，所述定子和所述转子封装于第一段壳内，所述第一摩擦片、所述动圈及所述主壳体位于所述第二段壳内，所述主壳体与所述第二段壳之间限定出环形腔；
    所述轮毂电机还包括密封组件，所述密封组件设于所述环形腔内以密封所述外壳和所述主壳体内的部件。
  8. 根据权利要求7所述的轮毂电机，其特征在于，所述密封组件包括油脂层和多个密封圈，多个所述密封圈沿所述环形腔的轴向间隔布置，所述油脂层填充在相邻的所述密封圈之间。
  9. 根据权利要求8所述的轮毂电机，其特征在于，所述多个密封圈包括相邻的第一密封圈和第二密封圈；所述第一密封圈的内周壁与所述主壳体外壁抵接，所述第一密封圈的外周壁与所述第二段壳之间存在第一间隙，所述第二密封圈的内周壁与所述主壳体之间存在第二间隙，所述第二密封圈的外周壁与所述第二段壳的内壁抵接；所述第一密封圈与所述第二密封圈之间、所述第一间隙及所述第二间隙均填充有油脂。
  10. 根据权利要求9所述的轮毂电机，其特征在于，
    所述第一密封圈和所述第二密封圈均为多个，多个所述第一密封圈和多个所述第二密封圈沿所述环形腔的轴向交错布置；和/或，
    所述第一密封圈的内边缘嵌入所述主壳体的外壁上的凹槽，所述第二密封圈的外边缘嵌入所述第二段壳的内壁上的凹槽。
  11. 根据权利要求9所述的轮毂电机，其特征在于，
    所述第一密封圈的外周壁与所述第二段壳的内壁之间的距离大于或等于1.5毫米且小于或等于2.5毫米；和/或，
    所述第二密封圈的内周壁与所述主壳体的外壁之间的距离大于或等于1.5毫米且小于或等于2.5毫米；和/或，
    相邻的所述第一密封圈和所述第二密封圈之间的距离大于或等于0.5毫米且小于或等于1毫米。
  12. 一种代步车，其特征在于，包括车轮，所述车轮包括车胎和轮毂电机，所述轮毂电机为权利要求1至11中任一项所述的轮毂电机，所述车胎套设在所述外壳的外周。
PCT/CN2022/143667 2022-02-10 2022-12-29 轮毂电机和具有其的代步车 WO2023151418A1 (zh)

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