EP3164326A1 - Unité d'entraînement pour une bicyclette à assistance électrique - Google Patents

Unité d'entraînement pour une bicyclette à assistance électrique

Info

Publication number
EP3164326A1
EP3164326A1 EP15730398.3A EP15730398A EP3164326A1 EP 3164326 A1 EP3164326 A1 EP 3164326A1 EP 15730398 A EP15730398 A EP 15730398A EP 3164326 A1 EP3164326 A1 EP 3164326A1
Authority
EP
European Patent Office
Prior art keywords
drive unit
gear
electric motor
planetary gear
unit according
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP15730398.3A
Other languages
German (de)
English (en)
Inventor
Rainer Fey
Ling HE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3164326A1 publication Critical patent/EP3164326A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
    • 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
    • B62M11/145—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 bottom bracket

Definitions

  • the invention relates to a drive unit for an electrically assisted bicycle, wherein the drive unit comprises an electric motor and a housing in which the electric motor is housed, wherein the drive unit further comprises a pedal crankshaft with a driven flange mounted thereon.
  • a gear unit (hub gear or derailleur) is mounted in the rear wheel to achieve optimum torque and speed ratio at different speeds.
  • the invention is therefore based on the object, a drive unit of the type mentioned in such a way that a compact unit is created, which requires no external sensor or additional transmission components, such as hub gear or derailleur.
  • the solution to this problem by the invention is characterized in that the drive unit further comprises a mounted on an axle planetary gear unit with sun gear, ring gear, planetary gear and planetary gears, wherein the planet carrier of the planetary gear unit is connected to the pedal crankshaft torque transmitting and wherein the ring gear of the planetary gear unit can be selectively brought into torque-transmitting connection via coupling means with the output flange.
  • the coupling agents are preferably part of a controllable freewheel.
  • the planetary gear unit is preferably arranged with the electric motor in a common housing.
  • the drive unit preferably further comprises a motor gear for connecting the electric motor to the planetary gear unit, wherein the motor gear is arranged with the electric motor in the common housing.
  • the torque-transmitting components between planetary gear unit and output flange are preferably formed as at least 2-stage, switchable spur gear. In this case, it is preferably provided that an electric actuator is provided which serves for switching between the gear stages of the at least 2-stage, switchable spur gear.
  • means for interrupting the power supply to the electric motor during the operation of the coupling means may be present.
  • signal means are advantageously provided which can be triggered for the purpose of signaling an impending change in the pedal speed before the actuation of the coupling means.
  • the user of the bicycle can be notified of an upcoming shift.
  • means for generating a coaster brake function can be arranged.
  • the ratio of the drive unit is preferably selected so that the number of teeth of a pinion installed in the rear wheel of the bicycle is equal to the wheel diameter of the bicycle in inches.
  • the proposed solution makes it possible to dispense with an additional gear unit in the rear wheel and an external sensor and To provide a cheaper, lighter and low maintenance electrically assisted bicycle.
  • the invention provides this particular, that in the drive unit, which is to be mounted on the bicycle frame, not only the known components (electric motor, transmission, pedal drive and control) are housed, but also an at least two-stage switchable transmission between the merged strands of pedal drive , Motor and arranged on the drive unit output, and a coaster brake function.
  • the cyclist can concentrate fully on driving.
  • the service on the bike is advantageously much easier, the probability of failure lower.
  • Fig. 1 shows schematically the section through a drive unit of an electrically assisted bicycle according to a first embodiment of the invention
  • Embodiment of the invention are based on the use of a 2-stage transmission. For simplicity, all components in a plane are shown in the figures.
  • the pedal force is transmitted to the unit via the crank arms 1 a and 1 b mounted on the crank shaft 2 in the housing.
  • the integrated in the crankshaft spur gear drives the provided with a spur gear planet carrier 3 a mounted on the axle 19 planetary gear.
  • the force is transmitted to the ring gear 8.
  • the output is via the ring gear 8.
  • the sun gear 6 is connected to a sleeve 7 and rotatably supported on the axle 19.
  • the torque occurring on the sleeve 7 is proportional to the pedal force and is used to drive the electric motor.
  • the measurement of the torque can be done via strain gauges, angle encoders or other direct and indirect known methods.
  • an additional external spur gear teeth is mounted, which drives the spur gear 9 and via a freewheel 10, the first gear stage of the 2-stage transmission, with the drive torque is transmitted to the rotatably mounted on the crankshaft output flange 11.
  • the second gear stage consists of the switchable via a controllable freewheel 13, 14 spur gear 12 which drives the fixedly connected to the output flange 1 1 spur gear. Due to the now higher speed of the output flange of the freewheel 10 is overhauled. Will the spur gear 12 again switched off, the freewheel 10 automatically assumes, thereby interrupting the power flow between the pedal drive la, lb and output flange 1 1 is reliably prevented.
  • the electric motor 18 drives via the spur gear 17 to the large spur gear of the spur gear 16 at.
  • the small spur gear of the spur gear 16 drives the large spur gear of the spur gear 15 at.
  • the small spur gear of the spur gear 15 drives the ring gear 8 at.
  • the force of the electric motor 18 is added to the pedal force before it is transmitted via the spur gears 9 and 12 to the output flange 1 1.
  • a freewheel can be arranged between the electric motor 18 and ring gear 8.
  • the arrangement of the electric motor 18 is both axially parallel - as shown in Fig. 1 - as well as offset by 90 degrees - as shown in Fig. 2 - possible.
  • the sleeve 7 rotates against a preloaded spring and actuates a first contact which turns on the electronics and releases a base load for motor control.
  • a second contact is actuated upon further rotation of the sleeve and releases the maximum motor support.
  • the drive unit ratio is selected to use a 28 tooth pinion on 28 inch bicycles, 24 teeth on 24 inch, etc.
  • the output link 20 can be kept small due to the internal translations and housed in a protected area of the drive.
  • a conventional chain guard can be omitted.
  • a coaster brake function can be integrated.
  • the spur gear 22 rotatably mounted on the axle 21 is actuated in the forward direction via the spur gear connected to the crankshaft 2.
  • the normally free-running spur gear 24 is driven and rotates the output flange 1 1 backwards.
  • the thereby also backward rotating connecting element between the output flange 1 1 and rear hub can actuate an integrated in the rear hub coaster brake.
  • the crankset drives via the fixedly connected to the crank axle gear the planet carrier of the mounted on a second axis planetary gear in the opposite direction.
  • the ring gear of the planetary gear is rotated in the same direction as the planet carrier.
  • the sun gear is pressed in the same direction.
  • a mounted on the outer diameter of the ring gear teeth drives via a smaller gear and a clamping roller freewheel rotatably mounted on the crank shaft hollow shaft.
  • the hollow shaft is rotatably mounted in the housing and carries on the outside of the "chainring" 20th
  • the sun gear of the planetary gear is mounted on a hollow shaft which is rotatably supported on the second axis.
  • the planet carrier is rotatably mounted on this hollow shaft.
  • the reaction torque of the sun gear is supported by the mounted on the hollow shaft clamping roller freewheel in the drive direction on the housing.
  • the reaction torque of the sun gear is proportional to the pedal torque. With the aid of a strain gauge mounted on the lever arm of the clamp roller freewheel carrier, the pedal torque can thus be recorded and processed.
  • the sun gear moves in the opposite direction when the ring gear is stationary.
  • the clamping roller freewheel releases the sun gear.
  • the planet gears rotate backwards without torque transmission. If the ring gear is moved in the drive direction with a stationary planet carrier, the pinch roller freewheel also releases the sun gear. There is no torque on the planet carrier and thus on the pedal.
  • the motor transmits its torque via two toothed belts and a gear on the external teeth of the ring gear.
  • a pinch roller freewheel between the engine and ring gear can be installed.
  • this freewheel can also be omitted.
  • the additional energy required will range from 1 to 3 watts.
  • the inertia is in relation to the bicycle in the per thousand range. A "Nachschieben" when stopping the rotation of the pedal crank is prevented by the freewheel of the sun gear.
  • the spur gear 12 On the second shaft, in addition to the planetary gear, the spur gear 12 is rotatably mounted on the shaft, which is larger in diameter than the ring gear 8.
  • the spur gear 12 can be connected via a suitable coupling mechanism against rotation with the ring gear.
  • One way to couple the two gears is the axial displacement of pins movably mounted in the second spur gear. These are pressed by a motor or by hand-driven mechanism in opposite recesses in the ring gear.
  • the speed of the large second gear 12 in the decoupled state is smaller than that of the ring gear. As a result, the coupling pins have sufficient time to reach the required position.
  • the large gear 12 now rotates at the same speed as the ring gear 8.
  • the large gear 12 drives a small gear, which is secured against rotation on the output hollow shaft.
  • the speed of the output hollow shaft is now greater than the speed of the driven by the ring gear pinch roller freewheel.
  • the gear driven by the ring gear is free.
  • the ring gear drives now via the planet gears and the sun gear, the hollow shaft on the second axis in the freewheeling direction of the force acting on the hollow shaft clamping roller freewheel.
  • the engine is driven in the drive direction, if no freewheel is mounted.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Retarders (AREA)

Abstract

L'invention concerne une unité d'entraînement pour une bicyclette à assistance électrique. L'unité d'entraînement comprend un moteur électrique (18) et un carter dans lequel est logé le moteur électrique (18). L'unité d'entraînement comprend en outre un pédalier (2) sur lequel est supportée une bride de sortie (11). Selon l'invention, pour réaliser une unité compacte qui ne nécessite aucun capteur externe ni organes de transmission supplémentaires, l'unité d'entraînement comprend en outre une unité d'engrenage planétaire montée sur un axe (19), pourvue d'une roue solaire (6), d'une couronne dentée (8), un porte-pignon planétaire (3) et des pignons planétaires (5). Le porte-pignon planétaire (3) de l'unité d'engrenage planétaire (6, 8, 3, 5) est relié en transmission de couple au pédalier (2), et la couronne dentée (8) de l'unité d'engrenage planétaire (6, 8, 3, 5) peut être mise sélectivement en liaison de transmission de couple avec la bride de sortie (11) par l'intermédiaire de moyens d'accouplement (14).
EP15730398.3A 2014-07-02 2015-06-22 Unité d'entraînement pour une bicyclette à assistance électrique Withdrawn EP3164326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014009833.8A DE102014009833B4 (de) 2014-07-02 2014-07-02 Antriebseinheit für ein elektrisch unterstütztes Fahrrad.
PCT/EP2015/001252 WO2016000809A1 (fr) 2014-07-02 2015-06-22 Unité d'entraînement pour une bicyclette à assistance électrique

Publications (1)

Publication Number Publication Date
EP3164326A1 true EP3164326A1 (fr) 2017-05-10

Family

ID=53442720

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15730398.3A Withdrawn EP3164326A1 (fr) 2014-07-02 2015-06-22 Unité d'entraînement pour une bicyclette à assistance électrique

Country Status (4)

Country Link
EP (1) EP3164326A1 (fr)
CN (1) CN106660608B (fr)
DE (1) DE102014009833B4 (fr)
WO (1) WO2016000809A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016205989A1 (de) 2016-04-11 2017-10-12 Volkswagen Aktiengesellschaft Tretkurbelanordnung für ein Tretrad
CN106114748A (zh) * 2016-08-22 2016-11-16 苏州八方电机科技有限公司 电动自行车及其变速辅助装置和变速控制方法
EP3323701B1 (fr) 2016-11-14 2021-12-01 Oechsler AG Dispositif de détection de couple, en particulier permettant de commander l'entraînement supplémentaire d'un véhicule pourvu d'entraînement hybride propulsé par force musculaire
DE102016014410B3 (de) * 2016-11-14 2018-01-25 Oechsler Ag Elektromotorischer Zusatzantrieb für ein Fahrrad
DE102016014066B3 (de) * 2016-11-25 2018-02-22 Oechsler Ag Gangschaltung für einen elektromotorischen Fahrrad-Zusatzantrieb
JP6887121B2 (ja) * 2017-02-23 2021-06-16 パナソニックＩｐマネジメント株式会社 補助駆動ユニットおよび電動アシスト自転車
JP6999025B2 (ja) * 2018-03-05 2022-02-04 本田技研工業株式会社 自転車用運動計測装置及び自転車
DE102018217097A1 (de) * 2018-10-05 2020-04-09 Zf Friedrichshafen Ag Antriebsanordnung für ein Fahrrad oder Pedelec
DE102018217351B4 (de) * 2018-10-10 2023-01-12 Vitesco Technologies Germany Gmbh Antriebsvorrichtung für ein Fahrrad mit einem Elektromotor und Fahrrad mit entsprechender Antriebsvorrichtung
DE102019111028A1 (de) * 2019-04-29 2020-10-29 Pinion Gmbh Getriebeanordnung, Antriebseinheit und Verfahren zum Betreiben einer Antriebseinheit für ein Fahrzeug
CN111619718A (zh) * 2020-05-14 2020-09-04 江苏晨朗电子集团有限公司 应用于电动自行车的驱动系统
US11808312B2 (en) 2021-08-17 2023-11-07 Ringspann Gmbh Cage freewheel

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB658966A (en) * 1946-11-30 1951-10-17 Jean Raymond Barthelemy Monge Improvements relating to a mechanism for bicycles, motor-assisted bicycles or motor cycles
CN1029102C (zh) * 1991-12-19 1995-06-28 杨中杰 自动变速系统
JP3617728B2 (ja) * 1996-07-03 2005-02-09 ヤマハ発動機株式会社 電動補助車両
JPH10194186A (ja) * 1997-01-13 1998-07-28 Yamaha Motor Co Ltd 電動自転車
DE202009018527U1 (de) * 2008-12-11 2012-01-18 Robert Bosch Gmbh Hybridantrieb für ein Elektrofahrrad
GB0902356D0 (en) * 2009-02-12 2009-04-01 Nexxtdrive Ltd Bicycle transmission systems
JP2011068278A (ja) * 2009-09-28 2011-04-07 Honda Motor Co Ltd 電動車両
CN102753429B (zh) * 2010-01-22 2015-11-25 福斯特资产有限公司 具有整合式转矩传感器的马达
DE102010003650A1 (de) * 2010-04-06 2011-10-06 Robert Bosch Gmbh Antriebsvorrichtung für ein Fahrrad
DE102012200232A1 (de) * 2012-01-10 2013-07-11 Robert Bosch Gmbh Antriebsvorrichtung für ein Elektrofahrrad mit Kraftmessung zur Fahrerwunscherkennung
TW201430237A (zh) * 2013-01-25 2014-08-01 li-he Yao 自行車自動無段變速裝置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016000809A1 *

Also Published As

Publication number Publication date
WO2016000809A1 (fr) 2016-01-07
CN106660608A (zh) 2017-05-10
CN106660608B (zh) 2019-06-14
DE102014009833B4 (de) 2016-05-19
DE102014009833A1 (de) 2016-01-07

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