DE19641241A1 - Drive unit for vehicles and machines, especially bicycles - Google Patents
Drive unit for vehicles and machines, especially bicyclesInfo
- Publication number
- DE19641241A1 DE19641241A1 DE1996141241 DE19641241A DE19641241A1 DE 19641241 A1 DE19641241 A1 DE 19641241A1 DE 1996141241 DE1996141241 DE 1996141241 DE 19641241 A DE19641241 A DE 19641241A DE 19641241 A1 DE19641241 A1 DE 19641241A1
- Authority
- DE
- Germany
- Prior art keywords
- transmission
- point
- drive
- main
- auxiliary
- 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- Withdrawn
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
- B62M15/00—Transmissions characterised by use of crank shafts and coupling rods
Abstract
Description
Antriebseinheit für Fahrzeuge und Maschinen, vorwiegend für Fahrräder zur Umwandlung einer vorzugsweise translatorischen Antriebsbewegung in eine rotatorische Abtriebsbe wegung.Drive unit for vehicles and machines, mainly for bicycles for conversion a preferably translatory drive movement in a rotary Abtriebsbe movement.
Es ist bekannt, daß gegenwärtig für derartige Antriebe grundsätzlich Kurbelgetriebe ver wendet werden.It is known that currently crank drives are basically used for such drives be applied.
Der Stand der Technik wird durch folgende konstruktive Lösungen bestimmt: starre Kurbelgetriebe zur KraftumwandlungThe state of the art is determined by the following constructive solutions: rigid crank gear for power conversion
- - Verwendung von kreisförmigen und elliptischen Kettenrädern- Use of circular and elliptical sprockets
- - Einbau von tangential wirkenden Federn im Kurbelgetriebe- Installation of tangentially acting springs in the crank mechanism
- - Verwendung von schaltbaren Ketten- und Zahnradgetrieben- Use of switchable chain and gear drives
- - Freie Wahl der Winkel zwischen den Kurbeln- Free choice of angles between the cranks
- - Anbringung von Freiläufen auf der Kurbelwelle- Installation of freewheels on the crankshaft
- - Verwendung von Schwing-Kurbelantrieben (nur Musterbau).- Use of oscillating crank drives (only sample construction).
Der Vorgang der Umwandlung der biomechanisch erzeugten Antriebsenergie in die wirk same mechanische Antriebsenergie am Abtrieb ist beim Kurbeltrieb dadurch gekennzeich net, daß nur der Anteil der Tangentialkraft an der Antriebskraft energetisch verwertet wird. Die zugehörige Radialkraft muß zwar, systembedingt, vom Körper bereitgestellt werden und erfordert dazu eine dementsprechende körperliche Anstrengung, leistet aber keine äußere Arbeit.The process of converting the biomechanically generated drive energy into the active The same mechanical drive energy at the output is characterized by the crank mechanism net that only the share of the tangential force in the driving force is used energetically becomes. The associated radial force must, depending on the system, be provided by the body become and requires a corresponding physical effort, but does no outside work.
Im Extremfall - oberer Totpunkt des Kurbelgetriebes - kann vom Kurbelgetriebe trotz größter körperlicher Anstrengung keine Abtriebskraft (Abtriebsmoment) erzeugt werden.In an extreme case - top dead center of the crank mechanism - despite the crank mechanism greatest physical exertion no downforce (downforce) can be generated.
Getriebetechnisch haben Kurbelgetriebe den Nachteil, daß bei gleichbleibender Antriebs kraft ein ungleichförmiges Abtriebsmoment (von Null bis Maximum) entsteht. Dadurch ist ein Anfahren bei der Kurbelstellung nahe der Totpunkte nicht möglich. Zur Überwindung von großen Bewegungswiderständen und von Steigungen sind daher große Untersetzungen erforderlich. In terms of transmission technology, crank transmissions have the disadvantage that with the drive remaining the same This creates a non-uniform output torque (from zero to maximum). This means that starting with the crank position near the dead center is not possible. For Overcoming large movement resistances and gradients are therefore great Reduction required.
Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daßThe advantages that can be achieved with the invention are in particular that
- - der Anteil der Radialkraft, der von der Antriebskraft erzeugt werden muß, fast voll ständig verschwindet, sowie daß- The portion of the radial force that must be generated by the driving force is almost full constantly disappears, as well as that
- - das Antriebs- bzw. Abtriebsmoment des Getriebes über den gesamten Weg der Antriebs kraft praktisch gleich bleibt.- The drive or output torque of the transmission over the entire path of the drive remains practically the same.
Damit entfallen, geometrisch bedingt, die wesentlichen Nachteile des Kurbeltriebes und es wird ein, gegenüber dem Kurbeltrieb wesentlich erhöhter biomechanischer Wirkungsgrad erreicht.Geometrically, this eliminates the essential disadvantages of the crank mechanism and it becomes a biomechanical efficiency that is significantly increased compared to the crank mechanism reached.
Gleichzeitig ist durch den Wegfall der kreisenden Bewegung des Antriebspunktes der Kraft (Pedale) die Möglichkeit gegeben, platzsparende Antriebe zu bauen, wie sie z. B. für Liegefahrräder zweckmäßig sind.At the same time, the omission of the circular movement of the drive point means that Power (pedals) given the opportunity to build space-saving drives, such as z. B. for Recumbent bicycles are useful.
Beim jetzigen Stand der Technik sind die gegenüber dem Kurbeltrieb veränderten und zusätzlichen Komponenten des erfindungsgemäßen Antriebes ohne grundsätzliche techno logische Änderungen herstellbar. Die gesamte weitere Antriebstechnik ist mit den bestehenden Systemen kompatibel.In the current state of the art, the are modified and compared to the crank mechanism additional components of the drive according to the invention without basic techno logical changes can be made. All other drive technology is with the existing systems compatible.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996141241 DE19641241A1 (en) | 1996-10-07 | 1996-10-07 | Drive unit for vehicles and machines, especially bicycles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996141241 DE19641241A1 (en) | 1996-10-07 | 1996-10-07 | Drive unit for vehicles and machines, especially bicycles |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19641241A1 true DE19641241A1 (en) | 1997-07-03 |
Family
ID=7808036
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996141241 Withdrawn DE19641241A1 (en) | 1996-10-07 | 1996-10-07 | Drive unit for vehicles and machines, especially bicycles |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19641241A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19811491A1 (en) * | 1998-03-17 | 1999-03-18 | Zhaoqi Wang | Bicycle traction drive in chainless design |
-
1996
- 1996-10-07 DE DE1996141241 patent/DE19641241A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19811491A1 (en) * | 1998-03-17 | 1999-03-18 | Zhaoqi Wang | Bicycle traction drive in chainless design |
DE19811491C2 (en) * | 1998-03-17 | 1999-09-23 | Zhaoqi Wang | Train chassis for bicycle |
EP0943536A3 (en) * | 1998-03-17 | 2000-11-02 | Zhaoqi Wang | Gear mechanism for bicycle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAV | Applicant agreed to the publication of the unexamined application as to paragraph 31 lit. 2 z1 | ||
8122 | Nonbinding interest in granting licenses declared | ||
8139 | Disposal/non-payment of the annual fee |