EP2250073A2 - Transmission par chaîne, véhicule équipé d'une transmission par chaîne et procédé de transmission d'un couple moteur dans un véhicule - Google Patents

Transmission par chaîne, véhicule équipé d'une transmission par chaîne et procédé de transmission d'un couple moteur dans un véhicule

Info

Publication number
EP2250073A2
EP2250073A2 EP09709426A EP09709426A EP2250073A2 EP 2250073 A2 EP2250073 A2 EP 2250073A2 EP 09709426 A EP09709426 A EP 09709426A EP 09709426 A EP09709426 A EP 09709426A EP 2250073 A2 EP2250073 A2 EP 2250073A2
Authority
EP
European Patent Office
Prior art keywords
sprocket
vehicle
chain
shaft
transmission
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Withdrawn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
EP09709426A
Other languages
German (de)
English (en)
Other versions
EP2250073A4 (fr
Inventor
Rudolf Höbel
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.)
TQ Systems GmbH
Original Assignee
Clean Mobile AG
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
Priority claimed from DE102008007710A external-priority patent/DE102008007710A1/de
Application filed by Clean Mobile AG filed Critical Clean Mobile AG
Publication of EP2250073A2 publication Critical patent/EP2250073A2/fr
Publication of EP2250073A4 publication Critical patent/EP2250073A4/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Withdrawn legal-status Critical Current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
    • B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear 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
    • B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
    • B62M9/04—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio
    • B62M9/06—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like

Definitions

  • the invention relates to a chain transmission and a vehicle with a chain transmission, which has both a pedal drive and a drive by an electric motor. It further relates to a method for translating a motor torque in a vehicle.
  • Electric motor with built-in reduction gear known, wherein the torque is transmitted from the electric motor by means of a chain on the bottom bracket.
  • a similar bicycle is also known from DE 299 04 342 Ul.
  • the object of the invention is to provide a transmission with which a translation of
  • Torque of an electric motor with high reliability, good maintainability and high efficiency can be realized.
  • An inventive transmission is designed as a chain transmission. It has three
  • Translation stages wherein the first gear stage by a first sprocket and a fourth sprocket, the second gear stage by a second sprocket and a fifth sprocket and the third gear stage is formed by a third sprocket and a sixth sprocket.
  • the first sprocket, the second sprocket and the third sprocket are arranged on a first shaft and the fourth sprocket, the fifth sprocket and the sixth sprocket are arranged on a second shaft.
  • a transmission chain is provided in each gear ratio.
  • chain transmissions may require more space than, for example, gear transmissions.
  • a space-saving arrangement of the individual components of the chain transmission is desirable.
  • a three-stage design of the chain transmission is favorable, since in this case the required sprockets can be arranged on two shafts, one of which is designed as an output shaft of the electric motor or connected thereto. The other shaft is designed as a bottom bracket of the vehicle.
  • the three chains can be very space-saving arranged substantially parallel to each other.
  • Reduction achieve in order to operate the electric motor in a low speed range of for example 2500 revolutions per minute and still ensure a high level of ride comfort, since a reduction of, for example, 1:45 can be achieved.
  • the gear ratio of the chain transmission is less than 1, so that a reduction of the engine speed takes place.
  • the first sprocket has a number ni of
  • the second sprocket has a number n 2
  • the third sprocket has a number n 3
  • the fourth sprocket has a number n 4
  • the fifth sprocket has a number n 5
  • the sixth sprocket has a number n 6 , where ⁇ ⁇ n 4 , n 3 ⁇ n 6 and n 5 ⁇ n 2 applies.
  • the transmission according to the invention can thus be composed of particularly few different components, if three identical chains and two sets of three identical sprockets, the three identical sprocket combinations are used.
  • the translation can also be varied by replacing a sprocket or a sprocket pair.
  • the second sprocket and the third sprocket are arranged on a common first hollow shaft whose axis of rotation coincides with the axis of rotation of the first shaft.
  • the fourth sprocket and the fifth sprocket are arranged on a common second hollow shaft whose axis of rotation coincides with the axis of rotation of the second shaft.
  • split shafts are used instead of the hollow shafts or instead of one of the hollow shafts.
  • the first shaft may be formed divided and have a first portion and a second portion which are separate from each other but rotatable about the same axis.
  • the first portion of the first shaft is connected to the electric motor.
  • the first sprocket is on the first area and the second sprocket and the third sprocket are arranged on the second area of the first shaft.
  • the sixth sprocket has a first freewheel. It is thus also possible to use the vehicle with the engine switched off, because by means of the freewheel, the rotational movement of the sixth ring gear and thus the motor of the rotational movement of the second shaft and thus the pedals can be decoupled.
  • the chain transmission according to the invention can be achieved in a vehicle, a large reduction of the engine torque and at the same time saves space. It is thus possible to arrange the transmission in the area of the bottom bracket, which is also favorable with regard to a low center of gravity of the vehicle.
  • the chain transmission according to the invention can be made with a diameter which is smaller than or at most as large as the diameter of a conventional front sprocket.
  • the chain transmission according to the invention can therefore be integrated particularly well in the vehicle frame and offers in the mounted state a large ground clearance and also a pleasing appearance.
  • the chain transmission can thus be formed as an integral part of the vehicle frame. It is also advantageous in the use of a chain gear that it works very quiet and at the same time is easy to manufacture and offers high efficiency.
  • the gear ratio of the chain transmission is at least 1: 100 and at most 1:25, in one embodiment even at least 1:50 and at most 1:40.
  • a gear ratio in this range allows a particularly good adaptation of the engine speed, which is conveniently on the order of at least 1000 revolutions per minute, to the cadence of an average driver.
  • a vehicle has the chain transmission according to the invention, wherein the vehicle has both a pedal drive and an electric motor drive.
  • the output shaft of the electric motor and the output shaft of the pedal drive are coupled together by the chain transmission.
  • the first shaft is designed as the output shaft of the electric motor and the second shaft as the bottom bracket of the vehicle.
  • the vehicle may be used as a two-wheeler, tricycle or quadricycle be formed. If it is designed as a tricycle, both arrangements are conceivable in which two wheels are arranged side by side behind as well as those in which two wheels are arranged side by side in front. However, embodiments with a single front wheel have a more favorable behavior when cornering.
  • Both the front wheel (s) and the rear wheel (s) can be driven.
  • a seventh sprocket is disposed on the second shaft connected by a chain to a rear sprocket of a rear wheel of the vehicle.
  • the seventh ring gear is connected to the ring gear of a differential gear. This is particularly advantageous when the vehicle is designed as a four-wheel or tricycle, in which the two wheels arranged next to each other are driven.
  • the seventh ring gear advantageously has a second freewheel, so that a
  • the chain transmission is particularly compact and can thus be easily arranged in a housing which is connected to a frame of the vehicle.
  • the housing has at least a lateral protection, so that injury to the driver is excluded by the transmission chains. But it can also be formed predominantly closed, so that the penetration of dirt and moisture is largely prevented.
  • a method of translating engine torque in a vehicle having an electric motor drive and a pedal drive comprises the steps of: first translating the torque from a first ring gear to a fourth ring gear via a first gear train; second translation of the torque from a second sprocket by means of a second gear chain to a fifth sprocket; thirdly translating the torque from a third sprocket to a sixth sprocket by means of a third gear chain, the sixth sprocket being connected to a bottom bracket of the vehicle; Transferring the torque from the bottom bracket shaft by means of a chain to a rear sprocket associated with a rear wheel of the vehicle.
  • a pedal torque can be applied to the bottom bracket shaft during operation of the vehicle.
  • Figure 1 shows schematically a perspective view of a chain transmission according to an embodiment of the invention
  • Figure 2 shows schematically a section of a vehicle with a chain transmission according to an embodiment of the invention
  • FIG. 3 shows schematically a cross section through a chain transmission according to a
  • FIG. 1 shows schematically a perspective view of a chain transmission 1 according to an embodiment of the invention.
  • the chain transmission 1 has a first sprocket 6, a second sprocket 7, a third sprocket 8, a fourth sprocket 9, a fifth sprocket 10 and a sixth sprocket 11, wherein the first sprocket 6, the second sprocket 7 and the third sprocket eighth on a first shaft 3 and the fourth sprocket 9, the fifth sprocket 10 and the sixth sprocket 11 on a second shaft 4 are arranged.
  • the first shaft 3 is connected to the output shaft of an electric motor 5.
  • the second shaft 4 is formed as a bottom bracket of a vehicle and has a first end 13 and a second end 14, wherein the first end 13 and the second end 14 are suitable for receiving cranks, not shown in the figure 1 with pedals ,
  • the first ring gear 6, the third ring gear 8 and the fifth ring gear 10 have relatively small diameters and correspondingly a small number of teeth.
  • a seventh ring gear 12 is further arranged, which has a second freewheel 16.
  • a first gear chain not shown for clarity connects the first sprocket 6 with the fourth sprocket 9, a second gear chain also not shown connecting the second sprocket 7 with the fifth sprocket 10 and a third gear chain also not shown connecting the third sprocket. 8 with the sixth ring gear 11.
  • the chain transmission 1 is housed in a housing 2 which houses the first sprocket
  • the housing 2 is at least as side protection for the chain transmission 1 and for the driver of the Vehicle trained.
  • the electric motor 5 is arranged within the housing 2.
  • the electric motor 5 may be made small and operated at a high speed. In this way it is possible to provide a particularly compact drive unit for a vehicle, which also has a high efficiency.
  • FIG. 2 schematically shows a detail of a vehicle with a chain transmission 1 according to an embodiment of the invention.
  • the vehicle is designed as a two-wheeler.
  • Chain transmission 1 is integrated in the frame 17 of the vehicle and comprises the bottom bracket of the vehicle, wherein on the second shaft 4 cranks 18 are arranged with pedals 19.
  • a chain 21 connects the seventh ring gear 12 with a rear sprocket 20 on the rear wheel of the bicycle.
  • the chain connects the seventh ring gear with the ring gear of a differential gear.
  • the vehicle may also have on its rear wheel a sprocket set of a circuit, of which, however, only the rear sprocket 20 is shown symbolically in FIG.
  • FIG. 3 shows schematically a cross section through a chain transmission 1 according to a
  • the first shaft 3 and the second shaft 4 are by means of ball bearings 22 in the
  • the first ring gear 6 is fixedly connected to the first shaft 3 and welded thereto.
  • the sixth ring gear 11 is connected to the second shaft 4, but its rotational movement can be decoupled from the rotational movement of the second shaft 4 via the first freewheel not shown in FIG.
  • the second ring gear 7 is arranged together with the third ring gear 8 on a common first hollow shaft 23, whose axis of rotation coincides with the axis of rotation of the first shaft 3.
  • the fourth ring gear 9 is arranged together with the fifth ring gear 10 on a second hollow shaft 24 whose axis of rotation coincides with the axis of rotation of the second shaft 4.
  • the first hollow shaft 23 is mounted on the first shaft 3 by means of a first ball bearing 25
  • the second hollow shaft 26 is mounted on the second shaft 4 by means of a second ball bearing 26.
  • the first gear chain 27 connects the first ring gear 6 with the fourth
  • the second gear chain 28 connects the second sprocket 7 with the fifth sprocket 10 and the third gear chain 29 connects the third sprocket 8 with the sixth sprocket eleventh [53]
  • the transmission chains 27, 28, 29 are designed, for example, as motor chains and can absorb high forces.
  • the first shaft 3 is connected to the output shaft 31 of the electric motor 5 and received in a receptacle 30 of the output shaft 31. In this way, the electric motor 5 for maintenance or replacement purposes can be easily removed without the chain drive 1 must be removed.
  • the electric motor 5 drives the first shaft 3 at a relatively high speed of the order of at least 1000 revolutions per minute, for example at 2000 to 3500 revolutions per minute, for example at 2500 revolutions per minute.
  • the fourth toothed rim 9 is arranged together with the fifth toothed rim 10 on the common second hollow shaft 24.
  • the third ring gear 8 is arranged together with the second ring gear 7 on the common first hollow shaft 23.
  • the chain transmission 1 thus has three transmission stages or rather reduction stages, wherein these three gear ratios are similar in the embodiment shown, since the first ring gear 6, the third ring gear 8 and the fifth ring gear 10 and the second ring gear 7, the fourth sprocket 9 and the sixth sprocket 11 each having the same number of teeth.
  • the rider's cadence can thus be a ratio of 1: 46.2 to the frequency of the electric motor.
  • typical comfortable pedaling frequencies of the driver corresponding to 45 to 70 revolutions per minute, it is thus possible to operate the electric motor at high speed at 2000 to 3200 revolutions per minute in a range with high efficiency.
  • Figure 4 shows another transmission in which in comparison to the transmission of FIG.
  • the freewheel 38 is provided so that the motor 5 can drive the seventh ring gear 12 via the transmission, without the pedals turning with it.
  • the freewheel is additionally blocked. This is particularly advantageous when braking energy is to be used for the recuperation of electrical energy. As a result, the impeller can drive the electric motor 5 in generator mode via the seventh ring gear, without the freewheel 38 preventing this.
  • the freewheel 38 is switchable with respect to the direction. This allows a reverse gear, in which the electric motor changes its direction of rotation and thus drives the vehicle backwards.
  • the freewheel causes here, too, that the pedals do not have to turn.
  • the switching also allows the recuperation described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Gears, Cams (AREA)
  • Gear Transmission (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

L'invention concerne une transmission par chaîne (1) destinée à transmettre un couple moteur, cette transmission présentant trois rapports de transmission. Le premier rapport de transmission est produit par une première couronne dentée (6) et une quatrième couronne dentée (9), le deuxième rapport de transmission par une deuxième couronne dentée (7) et une cinquième couronne dentée (10) et le troisième rapport de transmission par une troisième couronne dentée (8) et une sixième couronne dentée (11). La première (6), la deuxième (7) et la troisième couronne dentée (8) sont montées sur un premier arbre (3) et la quatrième (9), la cinquième (10) et la sixième couronne dentée (11) sont montées sur un second arbre (4). Une chaîne de transmission (27, 28, 29) est prévue dans chaque rapport de transmission pour la transmission du couple.
EP09709426.2A 2008-02-04 2009-02-04 Transmission par chaîne, véhicule équipé d'une transmission par chaîne et procédé de transmission d'un couple moteur dans un véhicule Withdrawn EP2250073A4 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008007710A DE102008007710A1 (de) 2008-02-04 2008-02-04 Kettengetriebe, Zweirad mit Kettengetriebe und Verfahren zur Übersetzung eines Motordrehmoments in einem Zweirad
DE102008012797 2008-03-05
PCT/IB2009/050451 WO2009098647A2 (fr) 2008-02-04 2009-02-04 Transmission par chaîne, véhicule équipé d'une transmission par chaîne et procédé de transmission d'un couple moteur dans un véhicule

Publications (2)

Publication Number Publication Date
EP2250073A2 true EP2250073A2 (fr) 2010-11-17
EP2250073A4 EP2250073A4 (fr) 2016-07-27

Family

ID=40952520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09709426.2A Withdrawn EP2250073A4 (fr) 2008-02-04 2009-02-04 Transmission par chaîne, véhicule équipé d'une transmission par chaîne et procédé de transmission d'un couple moteur dans un véhicule

Country Status (6)

Country Link
US (1) US20110120794A1 (fr)
EP (1) EP2250073A4 (fr)
JP (1) JP2011510870A (fr)
CN (2) CN104724245A (fr)
AU (1) AU2009211107A1 (fr)
WO (1) WO2009098647A2 (fr)

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Publication number Priority date Publication date Assignee Title
CN101353076B (zh) * 2008-09-18 2012-07-18 李平 小型电动车中置电机驱动器
EP2483142B1 (fr) * 2009-07-31 2015-09-30 TQ-Systems GmbH Transmission à trois chaines pour vehicule avec electromoteur
CN102821996B (zh) * 2010-03-01 2017-04-12 博格华纳公司 具有两个断点的用于***式混合动力车辆的单速传动系
DE102010051727A1 (de) * 2010-11-19 2012-05-24 Pinion Gmbh Antriebseinheit
EP2743168B1 (fr) * 2012-12-17 2020-06-10 Yamaha Hatsudoki Kabushiki Kaisha Unité d'entraînement et bicyclette à direction assistée
DE102013202013A1 (de) * 2013-02-07 2014-08-07 Robert Bosch Gmbh Antriebssystem für ein Antriebsrad eines Zweirads
GR20130100550A (el) 2013-09-27 2015-04-21 Ιωαννης Κωνσταντινου Τσαϊλιανης Ηλεκτρικο συστημα προωσης ελαφρων οχηματων
US9434447B2 (en) * 2014-02-05 2016-09-06 3G Bikes, Llc Bicycle with electric motor assist
US9377097B2 (en) * 2014-02-21 2016-06-28 Kuhn North America, Inc. Cartridge drive
CN104802912A (zh) * 2015-05-05 2015-07-29 苏州捷诚科技有限公司 一种两轴三级减速的中置力矩传动***
WO2017012358A1 (fr) * 2015-07-17 2017-01-26 武君 Mécanisme de transmission directionnelle, moyen formant roue dentée directionnelle et dispositif de pédale
US9759098B1 (en) * 2016-09-09 2017-09-12 William Cullen Chapman, Jr. Valvetrain conversion kit for an engine
US9676442B1 (en) * 2016-10-11 2017-06-13 William Wei Li Moped
FR3116798A1 (fr) * 2020-11-27 2022-06-03 Valeo Embrayages Ensemble de transmission pour engin de mobilité et procédé
DE102022001738A1 (de) 2022-05-17 2023-11-23 Karlheinz Nicolai Tretlagerschaltung mit Betätigungsvorrichtung für ein Fahrrad und ein Fahrrad mit einer solchen Tretlagerschaltung
DE102022001740A1 (de) 2022-05-17 2023-11-23 Karlheinz Nicolai Tretlagerschaltung mit hochfesten Zahnrädern für ein Fahrrad und ein Fahrrad mit einer solchen Tretlagerschaltung
DE102022001734A1 (de) 2022-05-17 2023-11-23 Karlheinz Nicolai Tretlagerschaltung mit Hilfsantrieb für ein Fahrrad und ein Fahrrad mit einer solchen Tretlagerschaltung
DE102022001739A1 (de) 2022-05-17 2023-11-23 Karlheinz Nicolai Tretlagerschaltung mit Schaltvorrichtung für ein Fahrrad und ein Fahrrad mit einer solchen Tretlagerschaltung
DE102022001737A1 (de) 2022-05-17 2023-11-23 Karlheinz Nicolai Tretlagerschaltung mit Sensoranordnung für ein Elektrofahrrad und Elektrofahrrad mit einer solchen Tretlagerschaltung
FR3144104A1 (fr) * 2022-12-23 2024-06-28 Bontaz Centre Porte roulement d’un dispositf de transmission pour velo a assistance electrique

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Also Published As

Publication number Publication date
CN102015429A (zh) 2011-04-13
AU2009211107A1 (en) 2009-08-13
CN102015429B (zh) 2015-04-01
WO2009098647A2 (fr) 2009-08-13
EP2250073A4 (fr) 2016-07-27
JP2011510870A (ja) 2011-04-07
CN104724245A (zh) 2015-06-24
WO2009098647A3 (fr) 2010-01-21
US20110120794A1 (en) 2011-05-26

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