DE3941119A1 - Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub - Google Patents

Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub

Info

Publication number
DE3941119A1
DE3941119A1 DE19893941119 DE3941119A DE3941119A1 DE 3941119 A1 DE3941119 A1 DE 3941119A1 DE 19893941119 DE19893941119 DE 19893941119 DE 3941119 A DE3941119 A DE 3941119A DE 3941119 A1 DE3941119 A1 DE 3941119A1
Authority
DE
Germany
Prior art keywords
hub
chain
sprockets
speed gear
change speed
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Withdrawn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
DE19893941119
Other languages
German (de)
Inventor
Egbert Greiss
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.)
Greiss Egbert 7000 Stuttgart De
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
Priority to DE19893941119 priority Critical patent/DE3941119A1/en
Publication of DE3941119A1 publication Critical patent/DE3941119A1/en
Withdrawn legal-status Critical Current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
    • 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
    • B62M9/10—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like
    • B62M9/14—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving different-sized wheels, e.g. rear sprocket chain wheels selectively engaged by the chain, belt, or the like the wheels being laterally shiftable

Landscapes

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

Abstract

The bicycle has a derailleur-type change speed gear. It has three sprockets (1,2,3) attached to its rear wheel. The three sprockets are formed integrally with a common hub (4). The hub has a splined bore which fits over the matching splines (5) of the wheel hub. The sprocket assembly can drive the rear wheel but has a limited deg. of axial movement. This axial movement enables the sprocket which is being driven by the chain to align itself with the chain wheel. This feature reduces friction between the chain and chain wheel and sprocket, and improves the mechanical efficiency of the bicycle. USE - Bicycles with derailleurs-type change speed gear.

Description

Die Erfindung betrifft die Zahnkränze am Fahrradhinterradan­ trieb, die beweglich auf einer verzahnten Welle sitzen und sich vertikal verschieben lassen, insbesondere für Fahrräder.The invention relates to the sprockets on the rear bicycle wheel driven, which sit and move on a toothed shaft can be moved vertically, especially for bicycles.

Die Zahnkränze auf einer verzahnten Achse sollen sich verschie­ ben lassen, um den sich bei starrer Verbindung ergebenden Winkel zwischen optimaler Parallellage der Kette mit den Zahnkränzen und der Schräglage der Kette nach Schalten auf nächstgrößeren Zahnkranz zu vermeiden.The sprockets on a toothed axis should shift allow for the result of a rigid connection Angle between the optimal parallel position of the chain with the Sprockets and the inclined position of the chain after shifting on to avoid the next larger sprocket.

Es ist bis jetzt bekannt, daß die herkömmlichen und derzeit üb­ lichen Fahrradhinterradantriebe mit festsitzenden Zahnkränzen ausgestattet sind.It is known so far that the conventional and currently over bicycle rear wheel drives with fixed sprockets are equipped.

Die jetzigen Konstruktionen am Fahrradhinterradantrieb weisen keine optimale Kettenführung auf.The current constructions on the rear wheel drive show no optimal chain guide.

Der Erfindung liegt die Aufgabe zugrunde, eine einfache und op­ timale Kettenführung zu gewährleisten.The invention has for its object a simple and op to ensure maximum chain guidance.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Zahnkränze vertikal beweglich auf einer verzahnten Welle sich bewegen und sich verschieben lassen.This object is achieved in that the Sprockets vertically movable on a toothed shaft themselves move and move.

Dadurch wird ein exakter Geradeauslauf der Kette ermöglicht.This enables the chain to run straight ahead.

Die mit der Erfindung erzielten Vorteile bestehen insbesondere darin, daß mit beweglichen Zahnkränzen auf einer verzahnten Welle ein Geradeauslauf der Kette gewährleistet wird und dadurch ein geringerer Verschleiß an Kette und Zahnkränzen auftritt, Energie und Kraftaufwand eingespart wird und sich die Laufgeräusche senken.The advantages achieved with the invention are in particular in that with movable sprockets on a toothed Shaft a straight running of the chain is guaranteed and this means less wear on the chain and sprockets occurs, energy and effort is saved and the Reduce running noise.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dar­ gestellt und wird wie folgt beschrieben. Die Zeichnung zeigt eine Kette am Fahrrad, die vom vorderen Zahnrad zu den hinten nebeneinanderliegenden Zahnkränzen führt. In Abhängigkeit von der Wahl des hinteren Zahnkranzes, entsteht zwischen der optimalen Parallellage der Kette mit dem vorderen und dem hinteren Zahnkranz ein Winkel. Dieser Winkel ist in optimaler Lage gleich Null. Indem sich auf der Welle die Zahnkränze verschieben lassen, wird sich die Kette so einlaufen, daß sich ein Winkel von =0 ergibt. Das Verschieben der Zahnkränze wird erreicht - wie in der Zeichnung vergrößert dargestellt - mit einer verzahnten Welle.An embodiment of the invention is shown in the drawing and is described as follows. The drawing shows a chain on the bike running from the front gear to the rear adjacent sprockets leads. In dependence of the choice of the rear sprocket arises between the optimal parallel position of the chain with the front and the rear sprocket an angle. This angle is optimal Position zero. By placing the sprockets on the shaft can be moved, the chain will shrink so that an angle of = 0 results. Moving the sprockets will reached - as shown enlarged in the drawing - with a toothed shaft.

Claims (2)

1. Zahnkränze, die beweglich auf einer verzahnten Welle sitzen, insbesondere für Fahrräder, dadurch gekennzeichnet, daß die Zahnkränze sich insgesamt auf der verzahnten Welle verschieben lassen und die darüberlaufende Kette einen exakten Geradeauslauf bekommt.1. sprockets that are movable on a toothed shaft, especially for bicycles, characterized in that the sprockets can be moved overall on the toothed shaft and the chain running over it gets an exact straight line. 2. Zahnkränze nach obigem Anspruch, dadurch gekennzeichnet, daß die Zahnkränze auf der dazugehörigen verzahnten Welle beweglich sind und einen Geradeauslauf der darüberliegenden Kette gewährleisten.2. Sprockets according to the above claim, characterized in that the Sprockets can be moved on the associated toothed shaft and a straight run of the chain above guarantee.
DE19893941119 1989-12-13 1989-12-13 Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub Withdrawn DE3941119A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893941119 DE3941119A1 (en) 1989-12-13 1989-12-13 Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893941119 DE3941119A1 (en) 1989-12-13 1989-12-13 Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub

Publications (1)

Publication Number Publication Date
DE3941119A1 true DE3941119A1 (en) 1991-06-20

Family

ID=6395361

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893941119 Withdrawn DE3941119A1 (en) 1989-12-13 1989-12-13 Sprocket assembly for derailleur change speed gear - incorporates hub which can slide axially on wheel hub

Country Status (1)

Country Link
DE (1) DE3941119A1 (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013752A1 (en) * 1991-02-12 1992-08-20 Boyle Malachy Gerard O Improvement relating to bicycles
GB2280002A (en) * 1993-06-24 1995-01-18 Kenneth William James Hub assembly for bicycle wheel comprises floating sprocket carrier
WO1997027099A1 (en) * 1996-01-25 1997-07-31 Robert Schmitt Bicycle chain drive with a derailleur
US20130008282A1 (en) * 2011-07-08 2013-01-10 Paha Designs, Llc Floating front ring
WO2015075582A1 (en) 2013-11-25 2015-05-28 Briers Marthinus Gear shift arrangement
CN109080758A (en) * 2017-06-13 2018-12-25 株式会社岛野 Crank component of bicycle
IT201700100288A1 (en) * 2017-09-07 2019-03-07 Torino Politecnico ELECTRONICALLY CONTROLLED HANDLING SYSTEM FOR TRANSLATION TO CASSETTE TRANSFER AND ITS HUMAN PROPULSION VEHICLE
US10435112B2 (en) 2017-04-07 2019-10-08 Shimano Inc. Bicycle drive train
US10451165B2 (en) 2015-12-15 2019-10-22 Sram Deutschland, Gmbh Chainring
DE102022002645A1 (en) 2022-07-19 2024-01-25 Daniel Müller Axially movable chain wheels or sprocket sets in derailleur gears
DE102023101408A1 (en) 2023-01-20 2024-07-25 Alfred Thun GmbH Drive system for a bicycle

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992013752A1 (en) * 1991-02-12 1992-08-20 Boyle Malachy Gerard O Improvement relating to bicycles
GB2280002A (en) * 1993-06-24 1995-01-18 Kenneth William James Hub assembly for bicycle wheel comprises floating sprocket carrier
WO1997027099A1 (en) * 1996-01-25 1997-07-31 Robert Schmitt Bicycle chain drive with a derailleur
EP2729352A4 (en) * 2011-07-08 2015-08-05 Paha Designs Llc Floating front ring
CN104039641A (en) * 2011-07-08 2014-09-10 帕哈设计有限责任公司 Floating front ring
US20130008282A1 (en) * 2011-07-08 2013-01-10 Paha Designs, Llc Floating front ring
WO2015075582A1 (en) 2013-11-25 2015-05-28 Briers Marthinus Gear shift arrangement
US10451165B2 (en) 2015-12-15 2019-10-22 Sram Deutschland, Gmbh Chainring
US10435112B2 (en) 2017-04-07 2019-10-08 Shimano Inc. Bicycle drive train
CN109080758A (en) * 2017-06-13 2018-12-25 株式会社岛野 Crank component of bicycle
CN109080758B (en) * 2017-06-13 2020-07-28 株式会社岛野 Bicycle crank assembly
IT201700100288A1 (en) * 2017-09-07 2019-03-07 Torino Politecnico ELECTRONICALLY CONTROLLED HANDLING SYSTEM FOR TRANSLATION TO CASSETTE TRANSFER AND ITS HUMAN PROPULSION VEHICLE
DE102022002645A1 (en) 2022-07-19 2024-01-25 Daniel Müller Axially movable chain wheels or sprocket sets in derailleur gears
DE102023101408A1 (en) 2023-01-20 2024-07-25 Alfred Thun GmbH Drive system for a bicycle

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Legal Events

Date Code Title Description
8122 Nonbinding interest in granting licenses declared
8127 New person/name/address of the applicant

Owner name: GREISS, EGBERT, 7000 STUTTGART, DE

8139 Disposal/non-payment of the annual fee