CN113459725A - 一种电动助力自行车及其轮毂电机 - Google Patents

一种电动助力自行车及其轮毂电机 Download PDF

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CN113459725A
CN113459725A CN202110855080.9A CN202110855080A CN113459725A CN 113459725 A CN113459725 A CN 113459725A CN 202110855080 A CN202110855080 A CN 202110855080A CN 113459725 A CN113459725 A CN 113459725A
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shaft
motor
fork
hub
cylinder shaft
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陈华
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Lingbei Motor Technology Shanghai Co ltd
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Lingbei Motor Technology Shanghai Co ltd
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Priority to CN202110855080.9A priority Critical patent/CN113459725A/zh
Publication of CN113459725A publication Critical patent/CN113459725A/zh
Priority to TW111104864A priority patent/TWI829092B/zh
Priority to TW111201405U priority patent/TWM629063U/zh
Priority to US17/707,952 priority patent/US12084147B2/en
Priority to JP2022001066U priority patent/JP3237741U/ja
Priority to DE202022101988.6U priority patent/DE202022101988U1/de
Priority to EP22171477.7A priority patent/EP4124557A1/en
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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
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B62M6/65—Rider propelled cycles with auxiliary electric motor power-driven at axle parts with axle and driving shaft arranged coaxially
    • 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
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B27/00—Hubs
    • B60B27/0047—Hubs characterised by functional integration of other elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B29/00—Apparatus or tools for mounting or dismounting wheels
    • B60B29/008—Wheel pullers; tools for axial movement of wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/02—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
    • B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
    • 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
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/10—Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels
    • 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
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • 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
    • B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
    • B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
    • B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
    • B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
    • 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
    • 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
    • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
    • 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
    • H02K7/108—Structural association with clutches, brakes, gears, pulleys or mechanical starters with friction clutches
    • 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
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0038—Disposition of motor in, or adjacent to, traction wheel the motor moving together with the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K7/00—Disposition of motor in, or adjacent to, traction wheel
    • B60K2007/0092—Disposition of motor in, or adjacent to, traction wheel the motor axle being coaxial to the wheel axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/10—Road Vehicles
    • B60Y2200/13—Bicycles; Tricycles

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

本发明公开了一种轮毂电机，包括电机主体，电机主体安装在筒轴结构之上，筒轴结构包括筒轴杆和筒轴，筒轴的端盖侧设置有独立的卡式飞轮，在卡式飞轮的外侧设置有用于防止卡式飞轮自筒轴上脱离的限位套筒，在筒轴的轮毂侧设置有用于防止筒轴转动的止转片。

Description

一种电动助力自行车及其轮毂电机
技术领域
本发明涉及电动助力自行车，尤其涉及电动助力车的轮毂电机。
背景技术
电动助力自行车的动力系统有多种配置方式，其中一种是将电机设置在前轮和后轮的轮毂处，以便在需要的时候为自行车提供助力。这种电动助力自行车的优点在于其助动力直接作用于自行车车轮，效率较高且结构紧凑。然而，安装轮毂电机后的自行车在骑行时在发生爆胎等故障时，一般都需要借助专门的工具才能将车轮从车身上拆卸下来，维修不便。
发明内容
有鉴于现有技术的上述缺陷，本发明所要解决的技术问题是为电动助力自行车提供一种便于装卸的轮毂电机装置。
为实现上述目的，本发明提供了一种轮毂电机，包括电机主体，电机主体安装在筒轴结构之上，筒轴结构包括筒轴杆和筒轴，筒轴的端盖侧设置有独立的卡式飞轮，在卡式飞轮的外侧设置有用于防止卡式飞轮自筒轴上脱离的限位套筒，在筒轴的轮毂侧设置有用于防止筒轴转动的止转片。
进一步地，电机主体的端盖和轮毂内设置驱动装置、减速装置和传动装置，驱动装置包括电机转子、电机定子；减速装置包括行星宝塔轮、太阳轮；传动装置包括内齿圈和行星离合器。
进一步地，限位套筒其内壁设置有键，筒轴的端盖侧端部设置有键槽，限位套筒通过键与键槽的配合安装在筒轴上。
进一步地，在限位套筒的端面上设置有用于防止筒轴转动的滚花纹。
进一步地，止转片上设有卡孔和止转头，止转片通过卡孔和设置在筒轴轮毂侧端部上的卡槽的配合，固定在筒轴上；止转头的结构被设置为可与自行车的前叉或后叉的叉端配合，以防止筒轴转动。
进一步地，在限位套筒的端面上设置有用于防止筒轴转动的滚花纹。
进一步地，止转片上设有卡孔和止转头，止转片通过卡孔和设置在筒轴轮毂侧端部上的卡槽的配合，固定在筒轴上；止转头的结构被设置为可与自行车的前叉或后叉的叉端配合，以防止筒轴转动。
进一步地，筒轴杆的端盖端设置有螺纹，轮毂端设置有把手。
本发明还提供了一种电动助力自行车，上述的轮毂电机被设置在其前叉的叉端之间，叉端的两端分布紧固在筒轴杆和筒轴之间。
本发明还提供了一种电动助力自行车，上述的轮毂电机被设置在其前后的叉端之间，叉端的两端分布紧固在筒轴杆和筒轴之间。
当根据本发明的电动助力自行车需要对车轮需要维修时，转动把手，自紧固螺母上松开筒轴杆，将筒轴杆自筒轴中抽出后，即可将整个车轮从车身上拆卸下来，或者进一步取下限位套筒后，就可将卡式飞轮从筒轴上取出，由此方便进行维修或者部件更换。
以下将结合附图对本发明的构思、具体结构及产生的技术效果作进一步说明，以充分地了解本发明的目的、特征和效果。
附图说明
图1是本发明的一个较佳实施例中的电动助力自行车的示意图；
图2是本发明的另一个较佳实施例中的电动助力自行车的示意图；
图3是本发明的一个较佳实施例中的轮毂电机安装后的剖面图；
图4是本发明的一个较佳实施例中的轮毂电机端盖侧的立体图；
图5是本发明的一个较佳实施例中的限位套筒的安装示意图；
图6是本发明的一个较佳实施例中的轮毂电机的端盖侧的爆炸图；
图7-8是本发明的一个较佳实施例中的限位套筒和筒轴的装配图；
图9是本发明的一个较佳实施例中的轮毂电机轮毂侧的装配图；
图10-11是本发明的一个较佳实施例中的止转片和筒轴的装配图；
图12是本发明的一个较佳实施例中的止转片和叉端的配合示意图。
具体实施方式
以下参考说明书附图介绍本发明的多个优选实施例，使其技术内容更加清楚和便于理解。本发明可以通过许多不同形式的实施例来得以体现，本发明的保护范围并非仅限于文中提到的实施例。
根据本发明的一种电动助力自行车如图1所示，其中轮毂电机1被设置在自行车道后轮轮毂处。
根据本发明的另一种电动助力自行车如图2所示，其中轮毂电机1被设置在自行车道后轮轮毂处。
图3为根据本发明的轮毂电机1安装后的剖面图。轮毂电机1的端盖24和轮毂23内设置驱动装置、减速装置和传动装置。在本实施例中，驱动装置包括电机转子3、电机定子4；减速装置包括行星宝塔轮5、太阳轮6；传动装置包括内齿圈7和行星离合器8。对于本领域人员而言，将上述的驱动装置、减速装置和传动装置以现有技术中的其他技术手段来替代实现是显而易见的，本发明也无意对此进行限定，故各种变体都应在本发明的保护范围之内。轮毂电机1可转动地设置在筒轴结构之上，筒轴结构包括筒轴杆10和筒轴11，其中带有把手21的筒轴杆10被设置为穿过筒轴11。自行车前叉或者后叉的叉端2的两端分布紧固在筒轴杆10和筒轴11之间。
同时参见图3-8，轮毂电机1一侧的筒轴11上设置有独立的卡式飞轮9。所谓独立，是指不同于现有技术中卡式飞轮固定于轮毂电机的端盖之上或之内，在根据本发明的实施例中的卡式飞轮9设置在端盖24之外，且相对于端盖24是独立的，从而可被快速拆卸，而无需拆卸端盖。为限制卡式飞轮9的轴向脱出，在筒轴11上、卡式飞轮9的外侧设置了限位套筒13。限位套筒13通过设置在其内壁的键19，安装在筒轴11端部的键槽14之上。可见，筒轴11的这一端实际上是通过限位套筒13紧固在叉端2上的。为了进一步地固定筒轴11，防止筒轴11相对于叉端2发生转动，在限位套筒13与叉端2接触的端面上，设置了滚花纹20。
同时参见图3和图9-11，在轮毂电机1另一侧，同样是为了防止筒轴11相对于叉端2发生转动，筒轴11上设置了止转片12。止转片12上设有卡孔18和止转头16。止转片12通过卡孔18和设置在筒轴11上的卡槽17的配合，固定在筒轴11上。如图12所示，当轮毂电机1安装在自行车上时，止转片12的止转头16通过和自行车叉端2地配合，起到防止筒轴11转动的作用。在本实施例中，止转头16由止转片12的一角折弯而成。
当如图1、2所示的根据本发明的电动助力自行车需要对车轮需要维修时，参见图3，转动把手21，自紧固螺母22上松开筒轴杆10，将筒轴杆10自筒轴11中抽出后，即可将整个车轮从车身上拆卸下来，或者进一步取下限位套筒13后，就可将卡式飞轮9从筒轴11上取出，由此方便进行维修或者部件更换。
以上详细描述了本发明的较佳具体实施例。应当理解，本领域的普通技术无需创造性劳动就可以根据本发明的构思作出诸多修改和变化。因此，凡本技术领域中技术人员依本发明的构思在现有技术的基础上通过逻辑分析、推理或者有限的实验可以得到的技术方案，皆应在由权利要求书所确定的保护范围内。

Claims (8)

1.一种轮毂电机，其特征在于，包括电机主体，电机主体安装在筒轴结构之上，筒轴结构包括筒轴杆和筒轴，筒轴的端盖侧设置有独立的卡式飞轮，在卡式飞轮的外侧设置有用于防止卡式飞轮自筒轴上脱离的限位套筒，在筒轴的轮毂侧设置有用于防止筒轴转动的止转片。
2.如权利要求1所述的轮毂电机，其中，电机主体的端盖和轮毂内设置驱动装置、减速装置和传动装置，驱动装置包括电机转子、电机定子；减速装置包括行星宝塔轮、太阳轮；传动装置包括内齿圈和行星离合器。
3.如权利要求1所述的轮毂电机，其中，限位套筒其内壁设置有键，筒轴的端盖侧端部设置有键槽，限位套筒通过键与键槽的配合安装在筒轴上。
4.如权利要求1所述的轮毂电机，其中，在限位套筒的端面上设置有用于防止筒轴转动的滚花纹。
5.如权利要求1所述的轮毂电机，其中，止转片上设有卡孔和止转头，止转片通过卡孔和设置在筒轴轮毂侧端部上的卡槽的配合，固定在筒轴上；止转头的结构被设置为可与自行车的前叉或后叉的叉端配合，以防止筒轴转动。
6.如权利要求1所述的轮毂电机，其中，筒轴杆的端盖端设置有螺纹，轮毂端设置有把手。
7.一种电动助力自行车，其特征在于，如权利要求1-6中任意一项中所述的轮毂电机被设置在其前叉的叉端之间，叉端的两端分布紧固在筒轴杆和筒轴之间。
8.一种电动助力自行车，其特征在于，如权利要求1-6中任意一项中所述的轮毂电机被设置在其后叉的叉端之间，叉端的两端分布紧固在筒轴杆和筒轴之间。
CN202110855080.9A 2021-07-26 2021-07-26 一种电动助力自行车及其轮毂电机 Pending CN113459725A (zh)

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TW111104864A TWI829092B (zh) 2021-07-26 2022-02-10 電動助力自行車及其輪轂電機
TW111201405U TWM629063U (zh) 2021-07-26 2022-02-10 電動助力自行車及其輪轂電機
US17/707,952 US12084147B2 (en) 2021-07-26 2022-03-30 Electric assisted bicycle and hub motor thereof
JP2022001066U JP3237741U (ja) 2021-07-26 2022-04-05 電動アシスト自転車及びそのハブモーター
DE202022101988.6U DE202022101988U1 (de) 2021-07-26 2022-04-12 Elektrisch unterstützte Fahrräder und ihre Radnabenmotoren
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