WO2020020976A1 - Bicyclette à double entraînement auxiliaire électrique - Google Patents

Bicyclette à double entraînement auxiliaire électrique Download PDF

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Publication number
WO2020020976A1
WO2020020976A1 PCT/EP2019/069977 EP2019069977W WO2020020976A1 WO 2020020976 A1 WO2020020976 A1 WO 2020020976A1 EP 2019069977 W EP2019069977 W EP 2019069977W WO 2020020976 A1 WO2020020976 A1 WO 2020020976A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric motor
gear
bicycle
crankshaft
drive
Prior art date
Application number
PCT/EP2019/069977
Other languages
German (de)
English (en)
Inventor
Stephan Rebhan
Oliver Krieg
Original Assignee
Vitesco Technologies Germany Gmbh
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 Vitesco Technologies Germany Gmbh filed Critical Vitesco Technologies Germany Gmbh
Publication of WO2020020976A1 publication Critical patent/WO2020020976A1/fr

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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
    • 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
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B62K19/34—Bottom brackets

Definitions

  • the invention relates to a bicycle with an electric auxiliary drive with a bicycle frame comprising a seat tube and a down tube, which converge in a crankcase, wherein a rotatably mounted crankshaft is arranged in the crankcase, and furthermore at least one epicyclic gear is arranged in the crankcase, the epicyclic gear on the drive side is mechanically coupled to the crankshaft and on the output side to an output component of the bicycle.
  • Bicycles with an electric auxiliary drive are divided into two categories, e-bikes and pedelecs.
  • Pedelec is short for Pedal Electric Cycle and e-bikes are electric bikes. The difference between the two lies in the power support.
  • the signal for this comes from a turning handle on the steering wheel, such as a moped, and is often more powerful than the pedelec.
  • the motor switches on when the rotary handle is actuated.
  • the engine power of the e-bike can be switched on regardless of the driver pedaling.
  • motor support is only permitted in addition to pedaling by the driver.
  • the level of motor support can be regulated manually or automatically. This makes it easier to tackle uphill stretches.
  • some models have a traction help that drives at up to six km / h even without pedaling.
  • the engine switches off automatically at a speed of 25 km / h, when operating in the USA this only happens at 32 km / h.
  • S-Pedelec engine support ends at 45 km / h when operating in the EU and is therefore subject to registration and insurance.
  • a driving license is also required for a certain group of people.
  • WO 2016/034574 A1 shows an electric bicycle, the drive comprising a first and a second electric motor and a planetary gear system with a planet carrier, a ring gear and a sun gear.
  • the first motor is used to provide a certain speed ratio between the pedal and the output sprocket.
  • the second motor is used to ensure that the level of support selected by the driver is maintained.
  • the disadvantage here is that the crankcase with the transmission and the two motors takes up a relatively large amount of space.
  • Bicycle frame with a seat tube and a down tube.
  • a seat post that carries a saddle can be inserted into the seat tube.
  • a crankshaft is arranged in the crankcase.
  • Pedal cranks are attached to the two ends of the crankshaft with pedals, with which an output chainring can be rotated in order to drive a bicycle chain running over it and thus the rear wheel of the bicycle.
  • a bicycle with the features mentioned in claim 1.
  • a first electric motor is arranged in the seat tube and a second electric motor in the down tube of the bicycle frame.
  • the first electric motor can be arranged in the down tube and the second electric motor in the seat tube of the bicycle frame.
  • the first electric motor and the second electric motor can be accommodated together in the seat tube or in the down tube.
  • the first electric motor and the second electric motor are mechanically coupled to an epicyclic gear or a coupling gear in the crankcase of the bicycle by means of corresponding motor shafts.
  • this is an epicyclic gearbox with three inputs, comprising the two electric motors and the muscular strength of the driver via the crankshaft and with one output, the output component, for example an output chainring for driving the rear wheel of the bicycle.
  • a planetary gear has in particular properties such as large load capacities and large transmission ratios in a small installation space and the superimposition of torques and speeds, the speed ratios being variable and adjustable or controllable at least between two of the inputs and outputs.
  • the bicycle has a control unit which can regulate the first electric motor by means of a torque signal and the second electric motor by means of a speed signal, or vice versa, wherein the electric motors can be designed, for example, as brushless DC motors.
  • a freewheel is advantageously arranged between the crankshaft and the output component. This primarily prevents the output component, such as an output chainring, from rotating more slowly than the crankshaft.
  • the epicyclic gear can be designed as a planetary gear and the output component or the output chainring can be mechanically coupled on the output side to the planet gear carrier of the planetary gear.
  • the crankshaft is then mechanically connected in particular to the first or the second electric motor and to the ring gear or the sun gear on the drive side.
  • the output component can be mechanically coupled to the ring gear of the planetary gear on the output side.
  • the crankshaft is then connected on the drive side in particular to the first or the second electric motor and to the planet gear carrier or the sun gear.
  • the output component can be mechanically coupled to the sun gear of the planetary gear on the output side.
  • the crankshaft is then connected on the drive side in particular to the first or the second electric motor and to the tarpaulin tarpaulin or the ring gear.
  • the mechanical coupling of a motor shaft of the respective electric motor to the epicyclic gear by means of known connection techniques can be non-positive, positive or frictional.
  • This mechanical coupling can preferably be produced as a pairing of two gearwheels such as, for example, two crown gears or two bevel gears. This advantageously creates a drive with the power of two electric motors and a gearbox in a small installation space.
  • crankcase can advantageously be thinner and therefore lighter.
  • Fig. 1 is a bicycle with an electric auxiliary drive with a
  • 3a shows a first embodiment of a drive in which the output chainring is coupled to the planet gear carrier, and each with an electric motor in a frame tube,
  • Fig. 3b shows a drive as in Fig. 3a, but with both
  • FIG. 4 shows a second embodiment of a drive in which the
  • Output chainring is coupled to the planet carrier, and with two electric motors in a frame tube,
  • 5a shows a first embodiment of a drive in which the
  • Output chainring is coupled to the ring gear, and with two electric motors in a frame tube,
  • Fig. 5b a drive as in Fig. 5a, but with one
  • Fig. 6 shows a second embodiment of a drive, in which the
  • Output chainring is coupled to the ring gear, and with two electric motors in a frame tube,
  • Fig. 7 shows a first embodiment of a drive in which the
  • Output chainring is coupled to the sun gear, and with both electric motors in a frame tube,
  • Fig. 8 shows a second embodiment of a drive, in which the
  • Output chainring is coupled to the sun gear, and with both electric motors in a frame tube,
  • FIG. 9 shows a drive with more than one planetary gear, and with two electric motors in a frame tube
  • FIG. 10 shows a schematic representation of a drive with a
  • Epicyclic gearbox with three inputs and one output.
  • 1 schematically shows a bicycle with a bicycle frame 1 comprising a seat tube 2 and a down tube 3, the seat tube 2 and the down tube 3 converging in a crankcase 6.
  • a first electric motor 4 is in the seat tube 2, and a second electric motor 5 is housed in the down tube 3, or vice versa.
  • An epicyclic gear 7, which is designed here as a planetary gear, is arranged in the crankcase 6.
  • the planetary gear 7 usually comprises a ring gear 8, a sun gear 9 and a planet gear carrier 10, these individual components of the planetary gear being not shown here.
  • a rotatably mounted cure belwelle 11 is arranged in the crankcase 6.
  • crank arms 14 are fastened, each with a pedal 15, by means of which the output component 12, here an output chainring 12, can be rotated in order to drive a bicycle chain 13 running therewith and thus the rear wheel 16 of the bicycle.
  • the output component 12 here an output chainring 12
  • a battery 17 is attached to the down tube 3.
  • the battery 17 supplies the first electric motor 4 and the second electric motor 5 with current.
  • the battery 17 could also be attached to the seat tube 2 or another suitable location on the bicycle. It would also be conceivable to accommodate the battery 17 in the bicycle frame 1.
  • Each of the two electric motors 4, 5 could also be supplied with power by its own battery.
  • the connecting cables between the battery 17 and the electric motor 4, 5 are not shown here. The connecting cables could not be visibly laid in the bicycle frame 1 for aesthetic reasons.
  • the bicycle also has a control unit 18, which regulates the first electric motor 4 by means of a torque signal and the second electric motor 5 by means of a speed signal can, or vice versa.
  • the torque of an electric motor could, for example, be calculated using the current introduced into the electric motor.
  • the speeds could in particular be determined using Hall sensors, not shown here.
  • the corresponding torque and speed signals can be passed on to the control unit, either by cable or wirelessly.
  • Fig. 2 shows schematically a bicycle as shown in Fig. 1, with the difference that the first electric motor 4 is arranged together with the second electric motor 5 in the seat tube 2.
  • the two electric motors 4, 5 could also be accommodated together in the down tube 3.
  • Fig. 3a to Fig. 9 show schematically various On events of a drive with a crankcase, not shown here, with a crankshaft 11 and at least one planetary gear 7 with a ring gear 8, a sun gear 9 and a planet gear carrier 10, the planetary gear 7 on the drive side or input side is mechanically coupled to the crankshaft 11 and on the output side or output side to an output chainring 12 of the bicycle.
  • a first electric motor 4 is arranged in the seat tube and a second electric motor 5 is arranged in the down tube, or vice versa, or the first electric motor 4 and the second electric motor 5 are arranged together in the seat tube or in the down tube.
  • the first electric motor 4 and the second electric motor 5 are mechanically coupled to the planetary gears 7, 8, 9 and 10 by means of corresponding motor tor shafts 4.1, 5.1 of the first electric motor 4 and the second electric motor 5 by means of corresponding pairings of crowns 20.
  • it could also be a pair of bevel gears, but this is not shown here.
  • 3a to 9 are for clarity for the sake of not showing the electric motors 4, 5 themselves and the bicycle frame.
  • crankshaft 11 is rotatably mounted in the crankcase, not shown, by means of a bearing 23. At the two ends of the crankshaft 11 crank arms 14 are fastened, by means of which the output chainring 12 can be set in rotation. A freewheel 19 is arranged between the crankshaft 11 and the output chainring 12 in such a way that the output chainring 12 is prevented from rotating more slowly than the crankshaft 11.
  • Fig. 3a shows a first embodiment of a drive in which the output chainring 12 is coupled to the planet carrier 10 ge, and each with an electric motor in a frame tube, either the down tube or the seat tube.
  • the first or the second electric motor is mechanically connected to the sun gear 9 via the corresponding motor shafts 4.1, 5.1 by means of a crown gear pair comprising two crown gears 20, which is in particular fixedly mounted on the crankshaft 11.
  • the crankshaft 11 could also be formed in one piece with the sun gear 9.
  • the further electric motor acts via the corresponding motor shaft 4.1, 5.1 on the ring gear 8 of the planetary gear 7.
  • Fig. 3b shows a drive as shown in Fig. 3a, but with both electric motors in the seat tube or in the down tube of the bicycle frame.
  • One of the motor shafts 4.1, 5.1 is in particular designed as a hollow shaft in which the other motor shaft 4.1, 5.1 is rotatably guided.
  • Fig. 4 shows a second embodiment of a drive in which the output chainring 12 is coupled to the planet carrier 10 ge.
  • Both electric motors are preferably in here ordered a frame tube of the bicycle frame, not shown.
  • the first or the second electric motor is mechanically connected to the ring gear 8 via the corresponding motor shafts 4.1, 5.1, which in turn is operatively connected to the crankshaft 11.
  • the further electric motor is in engagement with the sun gear 9 of the planetary gear 7 via the corresponding motor shaft 4.1, 5.1.
  • 5a shows a first embodiment of a drive in which the output chainring 12 is mechanically coupled to the ring gear 8.
  • the two electric motors are housed in a frame tube of the bicycle frame.
  • the first or the second electric motor is mechanically connected to the sun gear 9 via the corresponding motor shafts 4.1, 5.1 by means of a pair of crown gears from two crown gears 20, which is in particular firmly mounted on the cure 11.
  • the crankshaft 11 could also be formed in one piece with the sun gear 9.
  • the further electric motor acts on the planet carrier 10 of the planetary gear 7 via the corresponding motor shaft 4.1, 5.1.
  • FIG. 5b shows a drive as in FIG. 5a, but with a different coupling of an electric motor to the crankshaft 11, the corresponding crown gear 20 being arranged on the side of the crankshaft facing away from the sun gear 9.
  • FIG. 6 shows a second embodiment of a drive, in which the output chainring 12 is coupled to the ring gear 8, with both electric motors in a frame tube.
  • the first or the second electric motor is mechanically connected to the planet gear carrier 10 via the corresponding motor shafts 4.1, 5.1, which in turn is operatively connected to the crankshaft 11.
  • the further electric motor is in engagement with the sun gear 9 of the planetary gear 7 via the corresponding motor shaft 4.1, 5.1.
  • FIG. 7 shows a first embodiment of a drive in which the output chainring 12 is coupled to the sun gear 9. Both electric motors are housed in a frame tube, for example.
  • the first or the second electric motor is mechanically connected to the planet wheel carrier 10 via the corresponding motor shafts 4.1, 5.1, which is preferably fixedly mounted on the crankshaft 11.
  • the further electric motor acts on the ring gear 8 of the planetary gear 7 via the corresponding motor shaft 4.1, 5.1.
  • FIG. 8 shows a second embodiment of a drive, in which the output chainring 12 is coupled to the sun gear 9, in particular with both electric motors in a frame tube.
  • the first or the second electric motor is mechanically connected to the ring gear 8 via the corresponding motor shafts 4.1, 5.1, which in turn is operatively connected to the crankshaft 11.
  • the further electric motor acts on the planet carrier 10 of the planetary gear 7 via the corresponding motor shaft 4.1, 5.1.
  • Fig. 9 shows a drive with more than one planetary gear, namely with an upstream planetary gear 7.1, the planetary gear 7 and the downstream planetary gear 7.2.
  • the upstream planetary gear 7.1 includes a pre-ring gear 8.1, a pre-sun gear 9.1 and one
  • Pre-planet carrier 10.1 The downstream planetary gear 7.2 correspondingly comprises a post ring gear 8.2, a post sun gear 9.2 and a post planet carrier 10.2. 9, both electric motors are arranged in particular in a frame tube.
  • the pre-sun gear 9.1 is firmly connected to the crankshaft 11 on the drive side.
  • the first or the second electric motor acts via the corresponding motor shafts 4.1, 5.1 on the ring gear 8 or on the tarpaulin 10 gear carrier 10.
  • the output chainring 12 is in operative connection with the post planet carrier 10.2.
  • Fig. 10 shows schematically the drive with a planetary gear 7 with three inputs, comprising the two electric motors 4, 5 and the crankshaft 11, via which the driver's muscle power is transmitted, and with an output 12, the output component, for example an output chainring Drive the rear wheel of the bike.
  • Such an epicyclic gearbox has in particular properties such as large transmission powers and large transmission ratios in a small installation space and the superimposition of torques and speeds, with the speed ratios being variable and adjustable or controllable at least between two of the inputs and outputs are.
  • the epicyclic gear can be designed in particular as a coupling gear, in particular as a planetary gear.

Abstract

L'invention concerne une bicyclette à entraînement auxiliaire électrique, comportant un cadre de bicyclette (1) comprenant un tube de selle (2) et un tube diagonal (3) qui convergent dans un carter de vilebrequin (6), un vilebrequin (11) monté rotatif étant disposé dans le carter de vilebrequin (6), et en outre une transmission rotative (7) étant disposée dans le carter de vilebrequin (6), la transmission rotative (7) étant couplée mécaniquement sur le côté entraînement au vilebrequin (11) et sur le côté sortie à un composant (12) de sortie de la bicyclette, un premier moteur électrique (4) étant disposé dans le tube de selle (2) et un deuxième moteur électrique (5) étant disposé dans le tube de descente (3), ou vice versa, ou le premier moteur électrique (4) et le deuxième moteur électrique (5) étant disposés dans le tube de selle (2) ou dans le tube diagonal (3), et le premier moteur électrique (4) et le deuxième moteur électrique (5) étant couplés mécaniquement à la transmission rotative (7) par des arbres moteurs correspondants (4.1, 5.1).
PCT/EP2019/069977 2018-07-27 2019-07-24 Bicyclette à double entraînement auxiliaire électrique WO2020020976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018212584.8A DE102018212584B3 (de) 2018-07-27 2018-07-27 Fahrrad mit elektrischem Hilfsantrieb
DE102018212584.8 2018-07-27

Publications (1)

Publication Number Publication Date
WO2020020976A1 true WO2020020976A1 (fr) 2020-01-30

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ID=67439234

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/069977 WO2020020976A1 (fr) 2018-07-27 2019-07-24 Bicyclette à double entraînement auxiliaire électrique

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DE (1) DE102018212584B3 (fr)
WO (1) WO2020020976A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019006708B4 (de) * 2019-09-25 2023-04-13 Karlheinz Nicolai Fahrrad mit elektrischem Hilfsantrieb
DE202019005932U1 (de) 2019-09-25 2023-06-06 Karlheinz Nicolai Fahrrad mit elektrischem Hilfsantrieb
DE102021212131B3 (de) 2021-10-27 2022-12-22 Zf Friedrichshafen Ag Elektrisch leistungsverzweigter Fahrradantrieb
WO2024035702A1 (fr) 2022-08-08 2024-02-15 Driven Technologies, Inc Groupe motopropulseur de bicyclette à assistance au pédalage électrique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050270A (en) * 1979-05-14 1981-01-07 Gouzy A An electric bicycle
EP1298051A2 (fr) 2001-09-28 2003-04-02 Kabushiki Kaisha Moric Unité avec moteur électrique
DE102006032016B4 (de) 2006-07-10 2011-06-16 Gruber Antrieb Gmbh & Co. Kg Elektrischer Hilfsantrieb für ein Fahrrad
WO2016034574A1 (fr) 2014-09-02 2016-03-10 E2 Drives Sa Groupe motopropulseur pour un véhicule à pédales
EP3256375A1 (fr) * 2015-02-10 2017-12-20 Typhoon Bikes Ltd Unité d'alimentation à deux moteurs et procédure pour le montage de l'unité sur le cadre de vélo
CN206871295U (zh) * 2017-06-29 2018-01-12 太仓市荣驰电机有限公司 一种自行车纵置电机驱动系统

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3818462B2 (ja) * 1996-11-11 2006-09-06 ヤマハ発動機株式会社 電動補助自転車
JPH1191675A (ja) * 1997-09-22 1999-04-06 Yamaha Motor Co Ltd 電動車両

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2050270A (en) * 1979-05-14 1981-01-07 Gouzy A An electric bicycle
EP1298051A2 (fr) 2001-09-28 2003-04-02 Kabushiki Kaisha Moric Unité avec moteur électrique
DE102006032016B4 (de) 2006-07-10 2011-06-16 Gruber Antrieb Gmbh & Co. Kg Elektrischer Hilfsantrieb für ein Fahrrad
WO2016034574A1 (fr) 2014-09-02 2016-03-10 E2 Drives Sa Groupe motopropulseur pour un véhicule à pédales
EP3256375A1 (fr) * 2015-02-10 2017-12-20 Typhoon Bikes Ltd Unité d'alimentation à deux moteurs et procédure pour le montage de l'unité sur le cadre de vélo
CN206871295U (zh) * 2017-06-29 2018-01-12 太仓市荣驰电机有限公司 一种自行车纵置电机驱动系统

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