CH680941A5 - Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia - Google Patents

Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia Download PDF

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Publication number
CH680941A5
CH680941A5 CH229488A CH229488A CH680941A5 CH 680941 A5 CH680941 A5 CH 680941A5 CH 229488 A CH229488 A CH 229488A CH 229488 A CH229488 A CH 229488A CH 680941 A5 CH680941 A5 CH 680941A5
Authority
CH
Switzerland
Prior art keywords
toothed
toothed belt
segments
belt
holder
Prior art date
Application number
CH229488A
Other languages
German (de)
Inventor
Carl Victor Schaeppi
Original Assignee
Carl Victor Schaeppi
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 Carl Victor Schaeppi filed Critical Carl Victor Schaeppi
Priority to CH229488A priority Critical patent/CH680941A5/en
Publication of CH680941A5 publication Critical patent/CH680941A5/en

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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
    • 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
    • B62M9/08—Transmissions characterised by use of an endless chain, belt, or the like of changeable ratio using a single chain, belt, or the like involving eccentrically- mounted or elliptically-shaped driving or driven wheel; with expansible driving or driven wheel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/10—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley provided with radially-actuatable elements carrying the belt

Landscapes

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

Abstract

The drive toothed disc (1) is connected to the driven toothed disc (1a) by a toothed belt such that the active dia. of at least one disc can be changed stepwise. At least one disc is divided into segments (4) which can slide on a holder (2) radially away from the fulcrum (X) or towards it. The segments of the disc which do not engage directly the toothed belt can be moved inwards or outwards in accurately defined steps and can then be locked again to engage the toothed belt. ADVANTAGE - Slip-free drive with a very small friction loss.

Description

1 1

CH 680 941 A5 CH 680 941 A5

2 2nd

Beschreibung description

Die Erfindung betrifft ein Stufengetriebe für Zahnriemen, dadurch gekennzeichnet, dass die angetriebene und, oder die antreibende Zahnriemenscheibe stufenweise unabhängig oder voneinander abhängig ihren Durchmesser verändern können. Das Getriebe ist dadurch gekennzeichnet, dass die Zahnscheiben (1a) und (1) in Segmente (4) aufgeteilt sind, welche so auf einer Scheibe oder einem Führungskörper angebracht sind, dass sie sich einzeln radial vom Drehzentrum weg, oder zum Drehzentrum hin verschieben lassen. Die Verschiebung eines Segments (4) für eine jeweils genau definierte Strecke (S1) erfolgt dann, wenn das betreffende Segment nicht im Eingriff mit dem Zahnriemen ist. Nach erfolgter Verstellung wird das Segment auf der Scheibe (2) wieder festgehalten und die nächsten sich im Freiraum befindenden Segmente können verstellt werden. Da die Zahnscheibensegmente (4) mit dem Zahnriemen formschlüssig im Eingriff stehen und somit eine schlupffreie Kraftübertragung garantieren, können sie meist nur im eingriffsfreien Räum nacheinander verstellt werden. Zum Ausgleich der sich ändernden wirksamen Riemenlänge wird ein Riemenspanner (5) verwendet. Die Segmente können mechanisch, pneumatisch, hydraulisch, elektrisch, magnetisch oder mit Hilfe der Fliehkraft verstellt und festgehalten werden. Das Zahnriemengetriebe ist dadurch gekennzeichnet, dass es sich in beide Drehrichtungen laufend schalten lässt. Das Zahnriemengetriebe eignet sich grundsätzlich für die Auslegung und Anwendung jedes möglichen Profils des Zahnriemenquerschnitts und jeder Zahnteilung. Das Zahnriemengetriebe zeichnet sich durch einen schlupffreien Lauf und einen sehr kleinen Reibungsverlust aus. Es bietet sich überall dort an, wo mit Energieverlust gespart werden muss. Der hauptsächliche Verwendungszweck dieser Erfindung dürfte das Fahrrad sein. Die zweite Anwendung wäre in Elektromobilen denkbar. The invention relates to a multi-stage transmission for toothed belts, characterized in that the driven and, or the driving toothed belt pulley can change their diameter step by step independently or depending on one another. The gear is characterized in that the toothed disks (1a) and (1) are divided into segments (4) which are mounted on a disk or a guide body in such a way that they can be individually moved radially away from the center of rotation or towards the center of rotation . A segment (4) is displaced for a precisely defined distance (S1) when the segment in question is not in engagement with the toothed belt. After adjustment, the segment is held on the disc (2) again and the next segments in the free space can be adjusted. Since the toothed pulley segments (4) are positively engaged with the toothed belt and thus guarantee slip-free power transmission, they can usually only be adjusted one after the other in the non-invasive area. A belt tensioner (5) is used to compensate for the changing effective belt length. The segments can be adjusted and held mechanically, pneumatically, hydraulically, electrically, magnetically or with the help of centrifugal force. The toothed belt transmission is characterized in that it can be switched continuously in both directions of rotation. The toothed belt gear is basically suitable for the design and application of every possible profile of the toothed belt cross section and every tooth pitch. The toothed belt transmission is characterized by a slip-free run and a very low friction loss. It is ideal wherever there is a need to save energy. The primary use of this invention is believed to be the bicycle. The second application would be conceivable in electric vehicles.

Claims (5)

PatentansprücheClaims 1. Zahnriemen Stufengetriebe dadurch gekennzeichnet, dass die antreibende Zahnscheibe (1) mit der angetriebenen Zahnscheibe (1a) durch einen Zahnriemen (3) verbunden ist, wobei der wirksame Durchmesser wenigstens einer Zahnscheibe stufenweise verändert werden kann.1. Timing belt step transmission characterized in that the driving toothed pulley (1) is connected to the driven toothed pulley (1a) by a toothed belt (3), the effective diameter of at least one toothed pulley being able to be changed in stages. 2. Zahnriemen Stufengetriebe nach Anspruch 1, dadurch gekennzeichnet, dass wenigstens eine der Zahnscheiben (1) in Segmente (4) aufgeteilt ist, welche sich auf einer Halterung (2) radial vom Drehzentrum (X) weg oder zum Drehzentrum (X) hin verschieben lassen.2. Timing belt step transmission according to claim 1, characterized in that at least one of the toothed pulleys (1) is divided into segments (4) which move radially away from the center of rotation (X) or towards the center of rotation (X) on a holder (2) to let. 3. Zahnriemen Stufengetriebe nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass sich Segmente (4) der Zahnscheibe (1), die gerade nicht mit dem Zahnriemen (3) im Eingriff stehen, in genau definierten Strecken schrittweise vom Zentrum der Halterung (2) nach aussen oder innen verschieben und wieder arretieren lassen, so dass sie wieder in den Zahnriemen eingreifen können.3. Timing belt step transmission according to claims 1 and 2, characterized in that segments (4) of the toothed pulley (1), which are currently not in engagement with the toothed belt (3), step by step from the center of the holder (2 ) move outwards or inwards and have them locked again so that they can engage in the toothed belt again. 4. Zahnriemen Stufengetriebe nach Anspruch 3, dadurch gekennzeichnet, dass die einzelnen Segmente der Zahnscheibe (1) mechanisch, pneumatisch, hydraulisch, elektrisch, magnetisch oder mit Hilfe der Fliehkraft in den zwei radialen Richtungen verschoben und oder auf der Halterung (2) festgehalten werden können.4. Timing belt step transmission according to claim 3, characterized in that the individual segments of the toothed pulley (1) mechanically, pneumatically, hydraulically, electrically, magnetically or by means of centrifugal force in the two radial directions and or are held on the holder (2) can. 5. Zahnriemen Stufengetriebe nach den Ansprüchen 3 und 4, dadurch gekennzeichnet, dass sich die Segmente (4) in beiden Drehrichtungen der Halterung (2) radial von der Drehachse weg oder zu ihr hin verschieben und danach wieder arretieren lassen.5. Timing belt multi-stage transmission according to claims 3 and 4, characterized in that the segments (4) in both directions of rotation of the holder (2) radially away from the axis of rotation or towards it and then lock it again. 55 1010th 1515 2020th 2525th 3030th 3535 4040 4545 5050 5555 6060 6565 22nd
CH229488A 1988-06-15 1988-06-15 Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia CH680941A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH229488A CH680941A5 (en) 1988-06-15 1988-06-15 Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH229488A CH680941A5 (en) 1988-06-15 1988-06-15 Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia

Publications (1)

Publication Number Publication Date
CH680941A5 true CH680941A5 (en) 1992-12-15

Family

ID=4230411

Family Applications (1)

Application Number Title Priority Date Filing Date
CH229488A CH680941A5 (en) 1988-06-15 1988-06-15 Stepped gear train for toothed belt - has segmented toothed discs moving to and from centre to change overall disc dia

Country Status (1)

Country Link
CH (1) CH680941A5 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309490A1 (en) * 1993-03-24 1994-09-29 Reiner Tenigkeit Bicycle gear-changing mechanism
DE19609750A1 (en) * 1996-03-13 1997-09-18 Edgar Loehr Infinitely variable vario gearbox
FR2766251A1 (en) * 1997-07-21 1999-01-22 Guillaume Laloux Belt drive transmission for bicycles
WO2002061306A3 (en) * 2001-01-25 2004-03-11 Ran Siman-Tov Non-slip transmission
CN101660590A (en) * 2008-08-25 2010-03-03 罗伯特·博世有限公司 Pulley drive system
US7955203B2 (en) 2001-01-25 2011-06-07 Cvtron Ltd. Non-slip transmissions particularly useful as continuously-variable transmissions and transmission members thereof
CN103832534A (en) * 2012-11-23 2014-06-04 邱金和 bicycle transmission
CN111448405A (en) * 2017-07-13 2020-07-24 先进传输***控股有限公司 Pulley and transmission system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4309490A1 (en) * 1993-03-24 1994-09-29 Reiner Tenigkeit Bicycle gear-changing mechanism
DE19609750A1 (en) * 1996-03-13 1997-09-18 Edgar Loehr Infinitely variable vario gearbox
DE19609750C2 (en) * 1996-03-13 1998-07-30 Edgar Loehr Infinitely adjustable gear
FR2766251A1 (en) * 1997-07-21 1999-01-22 Guillaume Laloux Belt drive transmission for bicycles
WO2002061306A3 (en) * 2001-01-25 2004-03-11 Ran Siman-Tov Non-slip transmission
US7955203B2 (en) 2001-01-25 2011-06-07 Cvtron Ltd. Non-slip transmissions particularly useful as continuously-variable transmissions and transmission members thereof
CN101660590A (en) * 2008-08-25 2010-03-03 罗伯特·博世有限公司 Pulley drive system
CN101660590B (en) * 2008-08-25 2015-07-01 罗伯特·博世有限公司 Pulley drive system
CN103832534A (en) * 2012-11-23 2014-06-04 邱金和 bicycle transmission
CN111448405A (en) * 2017-07-13 2020-07-24 先进传输***控股有限公司 Pulley and transmission system

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