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DE10227737A1 - Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain - Google Patents

Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain Download PDF

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Publication number
DE10227737A1
DE10227737A1 DE2002127737 DE10227737A DE10227737A1 DE 10227737 A1 DE10227737 A1 DE 10227737A1 DE 2002127737 DE2002127737 DE 2002127737 DE 10227737 A DE10227737 A DE 10227737A DE 10227737 A1 DE10227737 A1 DE 10227737A1
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DE
Germany
Prior art keywords
chain
drive
driving
drive device
force
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Withdrawn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
DE2002127737
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German (de)
Inventor
Rainer Martin
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to DE2002127737 priority Critical patent/DE10227737A1/en
Publication of DE10227737A1 publication Critical patent/DE10227737A1/en
Withdrawn legal-status Critical Current

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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
    • B62M6/70—Rider propelled cycles with auxiliary electric motor power-driven at single endless flexible member, e.g. chain, between cycle crankshaft and wheel axle, the motor engaging the endless flexible member

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

The driving mechanism is provided at the driving half of the existing bicycle chain (1). Free-wheel is provided between the electric motor and the driving pinion (2) that engages into the chain. The power that is applied to the chain by the cyclist is measured by a chain power pick-up (3) provided between the driving pinion and the pedal chain wheel (4).

Description

Die Erfindung betrifft eine Antriebseinrichtung, welche die einfache Aufrüstung eines Fahrrades zu einem Elektro-Bike ermöglicht.The invention relates to a drive device, which is the simple upgrade of a bicycle to an electric bike.

Hierbei wird das Antriebsmoment von einer am Fahrzeugrahmen angebrachten Antriebseinheit (2) formschlüssig über ein Kitzel auf den Zugtrum der schon vorhandene Kette (1) übertragen.The drive torque is determined by a drive unit attached to the vehicle frame ( 2 ) form-fitting via a tickle on the traction strand of the existing chain ( 1 ) transfer.

Die Antriebseinheit besteht aus einem Elektromotor und einem damit angetriebenem Getriebe, welches wiederum über einen Freilauf das in die Kette eingreifende Ritzel antreibt. Wegen des geringen zur Verfügung stehenden Platzes zwischen Speichen und Pedalen sind scheibenförmige Elektromotoren vorteilhaft.The drive unit consists of a Electric motor and a gear driven with it, which in turn has a Freewheel drives the sprocket engaging the chain. Because of the low available standing space between spokes and pedals, disc-shaped electric motors are advantageous.

Zu der Antriebseinheit gehören weiterhin zwei AufnehmerThe drive unit also includes two pickup


- Ein Aufnehmer für die Drehgeschwindigkeit des Hinterrades.
- A sensor for the speed of rotation of the rear wheel.


- Ein Aufnehmer (3) für die Ketten-Kraft zwischen Antriebs-Kitzel und Pedal-Kettenrad. Der Kettenkraft-Aufnehmer (Zeichnung 2) besteht aus drei Kettenrädern (5a, 5b, 6), wobei das mittlere Rad gegenüber den zwei äußeren Räder so verschiebbar gelagert ist (7), dass beim Aufbringen einer Federkraft (8) senkrecht zur Ketten-Längsachse eine Auslenkung der Kette erfolgt. Beim Aufbringen einer Längskraft auf die Kette wird die Auslenkung kleiner. Die Auslenkung der Kette wird mit einem Wegaufnehmer (9) gemessen, in ein elektrisches Signal umgewandelt und in einer Steuerung in die Kettenlängskraft umgerechnet. Die Ketten-Vorspannung muss so gewählt werden, dass eine bestimmte Auslenkung der Kette bei entlasteten Pedalen gewährleistet ist. Auf diese Weise kann die durch die Pedale auf die Kette aufgebrachte Kraft bestimmt werden.
- a transducer ( 3 ) for the chain force between drive pinion and pedal sprocket. The chain load cell (drawing 2) consists of three sprockets ( 5a . 5b . 6 ), whereby the middle wheel is mounted so that it can move relative to the two outer wheels 7 ) that when applying a spring force ( 8th ) the chain is deflected perpendicular to the longitudinal axis of the chain. The deflection becomes smaller when a longitudinal force is applied to the chain. The chain is deflected with a displacement sensor ( 9 ) measured, converted into an electrical signal and converted into the chain longitudinal force in a control system. The chain pretension must be selected so that a certain deflection of the chain is guaranteed when the pedals are relieved. In this way, the force applied to the chain by the pedals can be determined.

Mit der oben beschriebenen Anordnung sind folgende Fakten gegeben:With the arrangement described above the following facts are given:


- Da der Antrieb an der gleichen Kette angreift, wie das mit den Pedalen angetriebene Kettenrad, ist gegeben, dass die gleiche Leistung vom Mensch und vom Motor an die Kette abgegeben wird, wenn die gleiche Kettenkraft vom Mensch und vom Motor auf die Kette aufgebracht wird (Die Kettengeschwindigkeit ist beides mal gleich).
- Since the drive acts on the same chain as the sprocket driven by the pedals, it is given that the same power is given to the chain by humans and by the motor if the same chain force is applied by humans and by the motor to the chain (The chain speed is the same at both times).


- Es wird kein Freilauf im Kettenrad der Pedale benötigt, da die Steuerung so eingestellt werden muss, dass maximal die halbe Antriebsleistung vom Mensch kommt. Ein Antrieb des Pedal-Kettenrades und somit der Pedale durch den Elektromotor ist somit unmöglich.
- No freewheel is required in the sprocket of the pedals, since the control must be set so that a maximum of half the drive power comes from humans. Driving the pedal sprocket and thus the pedals by the electric motor is therefore impossible.


- Durch die Abnahme der Drehgeschwindigkeit des Hinterrades kann die Steuerung die gefahrene Geschwindigkeit erkennen und den Antrieb so steuern, dass die vorgeschriebene Maximalgeschwindigkeit nicht durch den elektrischen Antrieb überschritten werden kann.
- By reducing the rotational speed of the rear wheel, the control can recognize the speed driven and control the drive so that the prescribed maximum speed cannot be exceeded by the electric drive.

Claims (6)

Antriebseinrichtung, die für die einfache Aufrüstung von Fahrrädern zu sogenannten Elektro-Bikes geeignet ist dadurch gekennzeichnet, dass der Antrieb an dem Zugtrum der vorhandenen Fahrradkette angreift.Drive device which is suitable for the simple upgrade of bicycles to so-called electric bikes, characterized in that the drive acts on the train strand of the existing bicycle chain. Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich zwischen dem Elektromotor bzw. Getriebe und dem in die Kette eingreifenden Antriebs-Kitzel ein Freilauf befindet.Drive device according to claim 1, characterized in that between the electric motor or gearbox and the in the Chain engaging drive tickle is a freewheel. Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die vom Fahrradfahrer auf die Kette aufgebrachte Kraft durch einen Kettenkraft-Aufnehmer, der sich zwischen Antrieb-Kitzel und Pedal-Kettenrad befindet, gemessen wird.Drive device according to claim 1, characterized in that the force applied by the cyclist to the chain through a chain force transducer, which is located between the drive pinion and Pedal sprocket is located, is measured. Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Antrieb von einer Steuerung so geregelt wird, dass vom Antrieb auf die Kette die gleiche Kraft aufgebracht wird, wie vom Fahrradfahrer. Dies entspricht wegen der gleichen Kettengeschwindigkeit auch der gleichen Leistung. Diese Art der Ansteuerung macht einen Freilauf am Pedal-Kettenrad überflüssig.Drive device according to claim 1, characterized in that the drive is controlled by a controller so that the The same force is applied to the chain as by the Cyclist. This corresponds to the same chain speed also the same performance. This type of control makes you Freewheeling on the pedal sprocket is superfluous. Antriebseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass durch einen Aufnehmer die Drehzahl des Hinterrades in ein elektrisches Signal umgewandelt wird. Mit Hilfe dieses Signales wird der Antrieb so geregelt, dass der Antrieb beim Erreichen einer vorgegebenen Maximal-Geschwindigkeit abschaltet.Drive device according to claim 1, characterized in that through a transducer the speed of the rear wheel into an electrical Signal is converted. With the help of this signal the drive regulated so that the drive when reaching a predetermined Maximum speed switches off. Kettenkraft-Aufnehmer für eine Antriebseinrichtung nach Anspruch 1 dadurch gekennzeichnet, dass die in der Kette wirkende Kraft anhand der Messung der Ketten-Auslenkung zwischen zwei nebeneinander angeordneten Kettenrädern aufgrund einer Querkraft bestimmt werden kann. Dazu wird der Betrag der Auslenkung in ein elektrisches Signal umgesetzt (Zeichnung 2).Chain load cell for a drive device according to claim 1, characterized in that the force acting in the chain based on the measurement of the chain deflection between two adjacent sprockets due to a shear force can be determined. To do this, the amount of deflection is in a electrical signal implemented (drawing 2).
DE2002127737 2002-06-21 2002-06-21 Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain Withdrawn DE10227737A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2002127737 DE10227737A1 (en) 2002-06-21 2002-06-21 Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2002127737 DE10227737A1 (en) 2002-06-21 2002-06-21 Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain

Publications (1)

Publication Number Publication Date
DE10227737A1 true DE10227737A1 (en) 2004-01-08

Family

ID=29719328

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2002127737 Withdrawn DE10227737A1 (en) 2002-06-21 2002-06-21 Driving mechanism for electric-bicycles, is provided at driving half of bicycle chain and has free-wheel between electric motor and driving pinion that engages into chain

Country Status (1)

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DE (1) DE10227737A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412621A3 (en) * 2010-04-13 2012-05-02 Philippe Kohlbrenner Wheeled vehicle with electric drive in the rear frame triangle
FR3016857A1 (en) * 2014-01-28 2015-07-31 Ntn Snr Roulements DEVICE FOR MEASURING THE VOLTAGE OF A CHAIN OF A CYCLE, AUXILIARY DRIVE DEVICE INCORPORATING THE MEASURING DEVICE AND METHODS OF MEASURING AND CONTROLLING THE SAME
CN105480370A (en) * 2014-10-06 2016-04-13 福特全球技术公司 power unit attachable to a bicycle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2412621A3 (en) * 2010-04-13 2012-05-02 Philippe Kohlbrenner Wheeled vehicle with electric drive in the rear frame triangle
FR3016857A1 (en) * 2014-01-28 2015-07-31 Ntn Snr Roulements DEVICE FOR MEASURING THE VOLTAGE OF A CHAIN OF A CYCLE, AUXILIARY DRIVE DEVICE INCORPORATING THE MEASURING DEVICE AND METHODS OF MEASURING AND CONTROLLING THE SAME
WO2015113956A1 (en) * 2014-01-28 2015-08-06 Ntn-Snr Roulements Device for measuring the tension of a cycle chain, auxiliary drive device incorporating the measuring device, and associated measuring and control methods
CN105480370A (en) * 2014-10-06 2016-04-13 福特全球技术公司 power unit attachable to a bicycle
GB2533028A (en) * 2014-10-06 2016-06-08 Ford Global Tech Llc Power unit attachable to a bicycle
US9802674B2 (en) 2014-10-06 2017-10-31 Ford Global Technologies, Llc Power unit attachable to a bicycle
GB2533028B (en) * 2014-10-06 2020-11-11 Ford Global Tech Llc Power unit attachable to a bicycle

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