WO2002030733A1 - Transmission multivitesse pour bicyclettes - Google Patents

Transmission multivitesse pour bicyclettes Download PDF

Info

Publication number
WO2002030733A1
WO2002030733A1 PCT/AT2001/000323 AT0100323W WO0230733A1 WO 2002030733 A1 WO2002030733 A1 WO 2002030733A1 AT 0100323 W AT0100323 W AT 0100323W WO 0230733 A1 WO0230733 A1 WO 0230733A1
Authority
WO
WIPO (PCT)
Prior art keywords
speed transmission
gear
transmission according
wheel
sun gear
Prior art date
Application number
PCT/AT2001/000323
Other languages
German (de)
English (en)
Inventor
Hermann Schmidt
Original Assignee
Hermann Schmidt
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 Hermann Schmidt filed Critical Hermann Schmidt
Priority to AU2001293462A priority Critical patent/AU2001293462A1/en
Publication of WO2002030733A1 publication Critical patent/WO2002030733A1/fr

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
    • 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 multi-speed transmission for bicycles with a rear wheel derailleur, which comprises a plurality of rear sprockets connected to the rear wheel hub and a chain thrower for throwing over the drive chain from one rear sprocket to another.
  • Chain gears for bicycles are known in large numbers, for example also from DE-A1 19608088, DE-C2 3821792 and DE-A1 19636729.
  • chain gears are provided both on the rear wheel and in the area of the pedal crankshaft.
  • a disadvantage of these conventional derailleur gears for bicycles is that not all of the existing gears can be used. Those gears where there is a strong skew of the chain, which wears it out prematurely, should not be used in continuous operation. There is also a relatively large overlap area between the existing gears. If the chain runs over a first front sprocket, the ratios that can be selected by selecting the rear sprocket overlap with those that result from the selection of an adjacent front sprocket.
  • Multi-speed planetary gearboxes built into the rear wheel hub are also known. Usually 3-gear shifts are realized in this way, but a larger number of gears has already been achieved by such planetary gearboxes. Such planetary gears in the rear wheel hub are usually used in order to implement a coaster brake in addition to a gear shift. A disadvantage of these multi-speed planetary gear drives is that only a relatively small number of different gears are available.
  • Such multi-speed planetary gearboxes installed in the rear wheel hub are known for example from DE-A1 -3819065, DE-A1 -19618636, DE-C2-3440070 and DE-A1-4133988.
  • GB 2 336 575 A also shows a motor bike that can be driven both by a pedal crank and by an electric motor.
  • the pedal crank and the electric motor act here via a planetary gear, on the one hand via the planetary gears (pedal-driven) and on the other hand via the sun gear (motor-driven) on the front chainring connected to the outer wheel.
  • the motor bike can also be provided with a rear wheel derailleur.
  • the object of the invention is to provide a novel multi-speed transmission for bicycles, by means of which a large number of different gears can be implemented in a large translation range in a simple and advantageous manner. According to the invention, this is achieved by a multi-speed transmission with the features of claim 1.
  • the transmission range of the multi-speed transmission can thereby be expanded or finer gradations of the individual translations can be achieved in a predetermined range. If the differences in the sizes of the individual front sprockets are too great, however, the chain could no longer be thrown between the individual sprockets in the conventional front derailleur. Even with the transmission differences used up to now, the exact throwing over of the chain between the front sprockets causes problems and often leads to the chain jumping out, while throwing over the chain between the rear sprockets is comparatively exactly possible.
  • a more logical sequence of the individual gears can be achieved for the user.
  • Those gears with the largest gear ratio are set at the highest gear ratio of the multi-speed planetary gear (the rear gear is optional), those gears with the medium gear ratio at the medium gear ratio of the planetary gear and also the gears with the lowest gear ratio at the smallest gear ratio of the planetary gear. These areas overlap in conventional multi-speed transmissions for bicycles.
  • the chain tensioner in the area of the rear-wheel derailleur in the multi-speed transmission according to the invention has to accommodate less large differences in the "free chain length" between the chain wheels. This difference in length to be recorded by the chain tensioner also limits the maximum transmission range in a conventional multi-speed derailleur system. The design effort for such chain tensioners, which absorb a large difference in length, is also considerable.
  • the front sprocket advantageously forms the planet carrier.
  • a sun gear rotatably mounted on the pedal crankshaft is provided which can be firmly connected by means of a switching device in a first switching position to a part rigidly connected to the bicycle frame and in a two th switching position is rotatably connected to the crankshaft.
  • the transmission according to the invention also enables shifting while stationary, without moving the pedal crank. If the user has come to a standstill without having changed from a heavy gear to an easy gear, he can therefore switch to an easy gear to start off.
  • Figures 1 to 3 are schematic representations of an embodiment of a multi-speed transmission according to the invention with schematic sectional views of the planetary gear in the different switching positions;
  • FIG. 4 shows a schematic sectional illustration of a further exemplary embodiment of the invention
  • FIG. 5 shows a section along the line AA from FIG. 4.
  • the rear wheel derailleur is designed in a conventional manner and is not shown in detail in the figures.
  • a plurality of rear sprockets or chain wheels 10 are provided, which are connected to the rear wheel hub (via a freewheel).
  • a chain thrower (not shown in FIGS. 1 to 3) and a traction means pivoting the chain thrower, the drive chain 9 is thrown from one rear sprocket 10 of the sprocket set to another.
  • the pedals 6 are connected via pedal cranks 7 to a pedal crankshaft 8 mounted in a pedal crank bearing 5.
  • the pedal crankshaft 8 stands with a front sprocket 4, over which the drive chain 9 runs, via a multi-speed
  • Planetary gear 11 in connection.
  • a sun gear 1 which has spur gear teeth, is rotatably mounted.
  • the sun gear meshes with planet gears 2, which also have spur gears, which are each rotatably mounted on the front sprocket, which forms a planet gear carrier.
  • planet gears 2 which also have spur gears, which are each rotatably mounted on the front sprocket, which forms a planet gear carrier.
  • six such planet gears 2 surrounding the sun gear can be provided.
  • an outer wheel 3 is provided, which has an internal toothing which meshes with the planet wheels 2.
  • the sun gear 1 is connected in a rotationally fixed manner to the pedal crank bearing 5, which forms a part rigidly connected to the bicycle frame (a part 12 of which is shown in FIGS.
  • This rotationally fixed connection of the sun gear 1 with the pedal crank bearing 5 can be achieved, for example, by toothing on the two abutting side surfaces of these parts.
  • spring-loaded pins which in the prestressed end position can project over the side surface of the pedal crank bearing, could also be provided, which pins can snap into corresponding recesses in the side surface of the sun gear 1.
  • the outer wheel 3 is rotatably connected to the pedal crankshaft 8.
  • a part 13 which is arranged on the pedal crankshaft 8 in a rotationally fixed manner, is provided, which has an external toothing 14 which is brought into engagement with an internal toothing 15 on the outer wheel 3 which meshes with this external toothing in FIG. 1.
  • the rotationally fixed connection between the outer wheel 3 and the pedal crankshaft 8 could also take place in a different manner, as has been explained, for example, in connection with the rotationally fixed connection between the sun wheel 1 and the pedal crank bearing 5.
  • the power transmission thus takes place in this first switching position from the pedal crankshaft via part 13 to the outer gear 3 and further to the planet gears 2.
  • the sun gear 1 is stopped or blocked.
  • the outer wheel is now non-rotatably connected to a part 17 rigidly connected to the bicycle frame 12.
  • an internal toothing 18 is provided on part 17, for example, in this axial position of the outer wheel 3 is in engagement with the external toothing 19 on the outer wheel 3.
  • the outer wheel 3 is thus stopped or blocked and the power transmission takes place from the pedal crankshaft 8 via the part 13 to the sun wheel 1 and further to the planet wheels 2.
  • the sun gear 1 is in the position shifted to the left and the outer gear 3 (together with the front sprocket 4 and the planet gears 2) in the position shifted to the right. Both the sun gear 1 and the outer gear 3 are therefore connected to the pedal crankshaft 8 in a rotationally fixed manner.
  • the power transmission takes place via the outer wheel 3 and the sun wheel 1 to the planet wheels 2.
  • the first gear position corresponds to the medium gear ratio, while the second gear position represents a light gear ratio and the third gear position represents a heavy gear ratio.
  • the transmission ratio between the pedal crankshaft 8 and the front sprocket 4 is 1: 1.
  • the switching device for changing the Wenn eine ⁇ the planetary gear 11 is thus in the embodiment shown by the displaceable mounting of the sun gear 1 and the front sprocket 4 together with the planet gears 2 and the outer gear 3 and further by the elements for the rotational connection of the sun gear 1 and of the outer wheel 3 with the bicycle frame 12 or the pedal crankshaft 8 and formed by traction means, not shown in the figures.
  • the distance by which the front sprocket 4 is displaced can be relatively short, so that the drive chain 9 is not displaced substantially relative to the central position with respect to the rear sprocket set formed by the sprockets 10.
  • the planet gears 2 are not rotatably mounted directly on the front chain ring 4, but on the two guide disks 20 which are arranged on both sides next to the chain wheel.
  • the guide letters 20 have axes 22 connecting them, on which the planet gears 2 are rotatably mounted.
  • 5 shows three such planet gears. Another number of such planet gears could also be provided, for example six.
  • the guide disks 20 are rotatably mounted on the sun gear 1, namely on two lateral shoulders 21 of the sun nenrades that connect laterally to the spur-toothed area of the sun gear and can have a reduced diameter compared to this.
  • a rolling bearing for example ball bearings, can be provided in each case for mounting the guide disks 20.
  • the guide disks 20 are connected to the chain wheel 4 by means of bolts 23, so that the chain wheel 4 forms a stable unit with the guide disks 20, which represents the planet gear carrier of the planetary gear.
  • the sprocket 4 has a central opening 24 through which the sun gear 1 passes. At the edge of this central opening 24 there are recesses 28 through which the planet wheels 2 run.
  • two outer wheels 3 are also provided, which are arranged on both sides of the chain wheel 4 and each have an internal toothing which meshes with the planet wheels 2.
  • the outer diameter of the guide disks 20 is somewhat larger than the inner diameter of the outer wheels 3 and the outer wheels 3 are thus guided in the area between the guide disks 20 and the chain wheel 4.
  • the sun gear 1, the sprocket 4 with the guide disks 20, the planet gears 2 and the outer gears 3 form a compact and mutually guided unit which is slidably mounted on the pedal crankshaft 8.
  • planetary gear 11 Different variations of the planetary gear 11 are conceivable and possible, as are known in such planetary gears, without leaving the scope of the invention.
  • a planetary gear transmission is combined with a rear-wheel derailleur in the area of the pedal crankshaft.
  • the planetary gear mechanism can also be designed to switch between more than three gears.
  • Such planetary gears are known in different designs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Structure Of Transmissions (AREA)

Abstract

L'invention concerne une transmission multivitesse pour bicyclettes qui comprend un dérailleur arrière, présentant plusieurs pignons arrières (10) reliés au moyeu de roue arrière, et un dérailleur avant conçu pour faire passer la chaîne d'entraînement d'un pignon arrière à un autre. Selon cette invention, l'axe (8) de pédalier entraîné par les manivelles (7) de pédalier est en liaison avec un pignon avant (4), sur lequel tourne la chaîne d'entraînement (9), par l'intermédiaire d'une transmission à pignon satellite multivitesse (11).
PCT/AT2001/000323 2000-10-12 2001-10-10 Transmission multivitesse pour bicyclettes WO2002030733A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001293462A AU2001293462A1 (en) 2000-10-12 2001-10-10 Multi-speed gearset for bicycles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT17322000 2000-10-12
ATA1732/2000 2000-10-12

Publications (1)

Publication Number Publication Date
WO2002030733A1 true WO2002030733A1 (fr) 2002-04-18

Family

ID=3688770

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2001/000323 WO2002030733A1 (fr) 2000-10-12 2001-10-10 Transmission multivitesse pour bicyclettes

Country Status (2)

Country Link
AU (1) AU2001293462A1 (fr)
WO (1) WO2002030733A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040481B3 (de) * 2007-08-21 2008-12-04 Raum, Eduard, Prof. Dipl.-Ing. Dreigang-Schaltgetriebe, insbesondere für Kindertretfahrzeuge
DE102007060179A1 (de) * 2007-12-11 2009-06-25 Heinrich Honert Tretlager-Nabenschaltgetriebe für Fahrräder
DE102012017557A1 (de) * 2012-09-05 2014-03-06 Rüdiger Ratzel Kettenblattgetriebe
ITMO20120242A1 (it) * 2012-10-03 2014-04-04 Alfonso Orfello Gruppo pignoni per cambio di biciclette o simili

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE419414C (de) 1922-08-08 1925-09-29 Friedrich Haering G Planetenraederwechselgetriebe fuer Fahrradantrieb
FR793568A (fr) * 1934-08-09 1936-01-27 Changement de vitesse pour cycles, motocycles et véhicules analogues
CH182102A (fr) 1934-03-24 1936-01-31 Genevoise Instr Physique Dispositif de mesure optique appliquè à une machine.
FR796594A (fr) * 1934-10-23 1936-04-10 Mécanisme de changement de vitesse
DE8411012U1 (de) * 1984-04-07 1984-11-15 Bunjes, Walter, 6719 Eisenberg Tretlager-gangschaltungs-getriebe
US4782722A (en) * 1986-07-15 1988-11-08 George Powell Bicycle drive system
DE3819065A1 (de) 1987-06-05 1989-01-05 Sturmey Archer Ltd Gangschaltgetriebe-nabe
DE3827819A1 (de) * 1987-09-22 1989-03-30 Florian Schlumpf Schaltbares tretlager fuer ein fahrrad oder dergleichen
AT389499B (de) * 1987-12-09 1989-12-11 Meixner Adolf Fahrrad - tretlagergetriebe fuer normal- und bergfahrt
DE4134843A1 (de) 1991-10-22 1992-11-26 Bernhard Albrecht Getriebeanordnung fuer senioren-fahrraeder
DE4133988A1 (de) 1990-10-13 1993-04-15 Sturmey Archer Ltd Gangschaltnabe
EP0562470A1 (fr) * 1992-03-25 1993-09-29 Schlumpf, Florian, Masch.Ing.HTL Pédalier comprenant un changement de vitesse pour bicyclette ou un engin analogue
DE3440070C2 (de) 1984-11-02 1993-12-02 Fichtel & Sachs Ag Mehrgangnabe für Fahrräder oder dergleichen
DE19608088A1 (de) 1995-06-07 1996-12-12 Campagnolo Srl Elektronisch gesteuerte Gangwechselvorrichtung für Fahrräder
DE3821792C2 (de) 1987-07-02 1997-07-03 Campagnolo Spa Hinterrad-Kettenumwerfer für eine Fahrrad-Kettenschaltung
DE19636729A1 (de) 1996-01-25 1997-07-31 Robert Schmitt Fahrrad-Kettenantrieb mit einer Kettenschaltung
DE19618636A1 (de) 1996-05-09 1997-11-13 Fichtel & Sachs Ag Mehrgangnabe mit Rücktrittbremse für Fahrräder
GB2336575A (en) 1998-04-22 1999-10-27 Chen Hui Lai Auxiliary electrical drive for a bicycle

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE419414C (de) 1922-08-08 1925-09-29 Friedrich Haering G Planetenraederwechselgetriebe fuer Fahrradantrieb
CH182102A (fr) 1934-03-24 1936-01-31 Genevoise Instr Physique Dispositif de mesure optique appliquè à une machine.
FR793568A (fr) * 1934-08-09 1936-01-27 Changement de vitesse pour cycles, motocycles et véhicules analogues
FR796594A (fr) * 1934-10-23 1936-04-10 Mécanisme de changement de vitesse
DE8411012U1 (de) * 1984-04-07 1984-11-15 Bunjes, Walter, 6719 Eisenberg Tretlager-gangschaltungs-getriebe
DE3440070C2 (de) 1984-11-02 1993-12-02 Fichtel & Sachs Ag Mehrgangnabe für Fahrräder oder dergleichen
US4782722A (en) * 1986-07-15 1988-11-08 George Powell Bicycle drive system
DE3819065A1 (de) 1987-06-05 1989-01-05 Sturmey Archer Ltd Gangschaltgetriebe-nabe
DE3821792C2 (de) 1987-07-02 1997-07-03 Campagnolo Spa Hinterrad-Kettenumwerfer für eine Fahrrad-Kettenschaltung
DE3827819A1 (de) * 1987-09-22 1989-03-30 Florian Schlumpf Schaltbares tretlager fuer ein fahrrad oder dergleichen
AT389499B (de) * 1987-12-09 1989-12-11 Meixner Adolf Fahrrad - tretlagergetriebe fuer normal- und bergfahrt
DE4133988A1 (de) 1990-10-13 1993-04-15 Sturmey Archer Ltd Gangschaltnabe
DE4134843A1 (de) 1991-10-22 1992-11-26 Bernhard Albrecht Getriebeanordnung fuer senioren-fahrraeder
EP0562470A1 (fr) * 1992-03-25 1993-09-29 Schlumpf, Florian, Masch.Ing.HTL Pédalier comprenant un changement de vitesse pour bicyclette ou un engin analogue
DE19608088A1 (de) 1995-06-07 1996-12-12 Campagnolo Srl Elektronisch gesteuerte Gangwechselvorrichtung für Fahrräder
DE19636729A1 (de) 1996-01-25 1997-07-31 Robert Schmitt Fahrrad-Kettenantrieb mit einer Kettenschaltung
DE19618636A1 (de) 1996-05-09 1997-11-13 Fichtel & Sachs Ag Mehrgangnabe mit Rücktrittbremse für Fahrräder
GB2336575A (en) 1998-04-22 1999-10-27 Chen Hui Lai Auxiliary electrical drive for a bicycle

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007040481B3 (de) * 2007-08-21 2008-12-04 Raum, Eduard, Prof. Dipl.-Ing. Dreigang-Schaltgetriebe, insbesondere für Kindertretfahrzeuge
DE102007060179A1 (de) * 2007-12-11 2009-06-25 Heinrich Honert Tretlager-Nabenschaltgetriebe für Fahrräder
DE102007060179B4 (de) * 2007-12-11 2009-09-17 Heinrich Honert Tretlager-Nabenschaltgetriebe für Fahrräder
DE102012017557A1 (de) * 2012-09-05 2014-03-06 Rüdiger Ratzel Kettenblattgetriebe
DE102012017557B4 (de) * 2012-09-05 2014-10-23 Rüdiger Ratzel Kettenblattgetriebe
ITMO20120242A1 (it) * 2012-10-03 2014-04-04 Alfonso Orfello Gruppo pignoni per cambio di biciclette o simili
WO2014054017A1 (fr) * 2012-10-03 2014-04-10 Orfello Alfonso Ensemble de pignons pour le développement des bicyclettes ou analogues

Also Published As

Publication number Publication date
AU2001293462A1 (en) 2002-04-22

Similar Documents

Publication Publication Date Title
DE102007004802B4 (de) Mehrfachgetriebe für ein mit Muskelkraft angetriebenes Fahrzeug
DE2819471C2 (de) Freilaufnabe
DE4203509A1 (de) Mehrgang-antriebsnabe fuer fahrraeder
EP0915800A1 (fr) Transmission a plusieurs vitesses pour bicyclettes
EP0248899B1 (fr) Boite de changement a echelonnement multiple de vitesses
EP3599152B1 (fr) Procédé de fonctionnement pour un dispositif d'entraînement, dispositif d'entraînement et véhicule
DE3407164C2 (de) Mehrgang-Antriebsnabe für Fahrräder
DE2422315A1 (de) Kraftuebertragung fuer ein kettengetriebenes fahrzeug
DE3819065C2 (de) Nabe mit einem Gangschaltgetriebe
DE19745419A1 (de) Mehrgang-Getriebenabe
DE4447661C2 (de) Integrierte Rücktrittbremseinrichtung einer Mehrgang-Antriebsnabe mit mehr als 3 Gängen für ein Fahrrad
EP0806340B1 (fr) Moyeu de bicyclette à plusieurs vitesses avec frein à contre-pédalage
EP2426043B1 (fr) Engrenage de moyeu de bicyclette
WO2002030733A1 (fr) Transmission multivitesse pour bicyclettes
DE2533308A1 (de) Mehrgangnabe fuer fahrraeder o.dgl.
DE4324935C2 (de) Mehrgang-Antriebsnabe für Fahrräder oder dergleichen
DE102021122592B4 (de) Schaltsystem und Getriebeeinheit mit einem Schaltsystem, insbesondere für ein Zweirad
DE19828829B4 (de) Fünfgangnabe
DE102022211746B3 (de) Schaltzuglose Schaltvorrichtung für ein mehrgängiges Fahrradgetriebe
DE202010016798U1 (de) Fahrradnabengetriebe
DE202010012075U1 (de) Fahrradnabengetriebe
DE156348C (fr)
DE202021104692U1 (de) Getriebeeinheit
DE847703C (de) Schaltgetriebe fuer Fahrzeuge, insbesondere Fahrraeder
DE195919C (fr)

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 092302001

Country of ref document: AT

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP