DE3425342A1 - Articulated tread crank for bicycle - Google Patents
Articulated tread crank for bicycleInfo
- Publication number
- DE3425342A1 DE3425342A1 DE19843425342 DE3425342A DE3425342A1 DE 3425342 A1 DE3425342 A1 DE 3425342A1 DE 19843425342 DE19843425342 DE 19843425342 DE 3425342 A DE3425342 A DE 3425342A DE 3425342 A1 DE3425342 A1 DE 3425342A1
- Authority
- DE
- Germany
- Prior art keywords
- crank
- pedal
- movement
- case
- spring
- 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- Withdrawn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
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/36—Rider propulsion of wheeled vehicles with rotary cranks, e.g. with pedal cranks
-
- 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
- B62M3/00—Construction of cranks operated by hand or foot
- B62M2003/006—Crank arrangements to overcome dead points
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
Description
Gelenk - Tretkurbel für Fahrrad.Articulated crank for bicycle.
Vorliegende Wrfindung soll das Radfahren mit weniger Energie-Aufwand, als dies beim bisherigen Antrieb der Fall ist, ermöglichen.The present invention is intended to make cycling with less energy expenditure, than is the case with the previous drive.
Die Tretkurbel des Fahrrades wird zu diesem Zwecke mit einem Gelenk versehen, welches dem Kurbelarm eine abgewinkelte Form gibt. Eine Feder hält die Kurbel in*d,ieser Winkelform, solange keine Energie huber das Pedal auf die Kurbel einwirkt. Beim Heruntertreten des Pedals, streckt sich die gewinkelte Kurbel wie,auch die Feder und wird dabei länger. Der Kurbelarm erreicht seine größte Länge bei höchster Belastung also dann, wenn die Kurbel sich ca. um 90 Grad nach unten bewegt hat. Bei weiterem herunter treten des Pedals läßt die einwirkende Energie von oben automatisch nach, und die Feder zieht die Kurbel in die Ausgangspotion zurück, sodaß sich die Kurbel nach getaner Arbeit wieder in vorheriger Länge nach oben bewegt.The pedal crank of the bicycle is for this purpose with a joint provided, which gives the crank arm an angled shape. A spring holds it Crank in this angular form as long as there is no energy pushing the pedal onto the crank acts. When you step down the pedal, the angled crank stretches like, too the spring and becomes longer. The crank arm reaches its greatest length at its greatest So the load is when the crank has moved approx. 90 degrees downwards. If you step down the pedal further, the applied energy from above releases automatically after, and the spring pulls the crank back into the starting position so that the After the work is done, the crank is moved back up to the previous length.
Das Strecken der Kurbel und der Feder kann wieder von neuem beginnen, wenn das Pedal den oberen Totpunkt überschritten hat, und die Kraut des Beines wieder auf das Pedal einwirken ka nn.The stretching of the crank and the spring can start all over again, when the pedal has passed top dead center, and the weed of the leg again can act on the pedal.
Beschreibung Der Kurbelarm welcher sich um die Kurbelachse dreht, besteht aus zwei Teilen, welche gelenkig miteinander verbunden sind und eine Winkelform bilden. Der obere Kurbelteil ist an der Kurbelachse angebracht, während der untere Teil des Kurbelarmes am oberen Arm angelenkt ist und das Pedal trägt. Bei Energie-Einwirkung durch die Beinkraft bewegt sich der untere Kurbelarmteil nach unten, wodurch die Feder sich streckt und der Kurbelarm länger wird und damit den gewüschten Effekt erzielt; mit längerem Hebelarm mehr Leistung zu erzielen.Description The crank arm which rotates around the crank axis, consists of two parts, which are hinged together and an angular shape form. The upper crank part is attached to the crank axle, while the lower Part of the crank arm is hinged to the upper arm and carries the pedal. When exposed to energy the lower part of the crank arm moves downwards due to the leg force, which causes the The spring stretches and the crank arm becomes longer and thus the desired effect achieved; to achieve more performance with a longer lever arm.
Fig. 1 zeigt die durch Gelenk G verbundenen Kurbelarme K 1 End K 2 in oberer Totpunktstellung, wobei die Feder F die beiden Kurbelarme K 1 und K 2 in kurzer Winkelstellung hält.1 shows the crank arms K 1 end K 2 connected by joint G in top dead center position, the spring F controlling the two crank arms K 1 and K 2 holds in a short angular position.
Fig. 2 zeigt die kurbelarm K 1 und K 2 sich um die Kurbelachsmitte A drehend, und wie durch Engerieeinwirkung auf das Pedal P die Feder F sich gestreckt hat, und dabei der Kurbelarm K 1 und K 2 länger geworden ist und die Endstellung erreicht hat in welcher der größte Nutzeffekt erzielt wird.Fig. 2 shows the crank arms K 1 and K 2 around the center of the crank axis A turning, and as if by the action of energy on the pedal P the spring F is stretched has, and the crank arms K 1 and K 2 have become longer and the end position has reached in which the greatest efficiency is achieved.
- - Leerseite -- - blank page -
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843425342 DE3425342A1 (en) | 1984-03-24 | 1984-07-10 | Articulated tread crank for bicycle |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843411008 DE3411008A1 (en) | 1984-03-24 | 1984-03-24 | Tread crank for bicycle |
DE19843416309 DE3416309A1 (en) | 1984-03-24 | 1984-05-03 | Crank mechanism |
DE19843425342 DE3425342A1 (en) | 1984-03-24 | 1984-07-10 | Articulated tread crank for bicycle |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3425342A1 true DE3425342A1 (en) | 1986-01-16 |
Family
ID=27191833
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19843425342 Withdrawn DE3425342A1 (en) | 1984-03-24 | 1984-07-10 | Articulated tread crank for bicycle |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3425342A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4793208A (en) * | 1985-03-13 | 1988-12-27 | Societe Look | Crank-gear for bicycle or similar locomotion vehicle |
US5157988A (en) * | 1991-06-11 | 1992-10-27 | Pinkstock Donald H | Elastic crank for bicycles |
DE4139689A1 (en) * | 1991-08-16 | 1993-02-18 | Rees Bertram Dipl Paed | Bicycle pedal crank with variable geometry - has two crank arms commonly rotatable on pedal bearing axis, each comprising two articulated arm parts |
DE4227229A1 (en) * | 1992-08-17 | 1994-02-24 | Karlernst Sewing | Automatic gear change system for bicycles - has elastic element for mechanical coupling of crank and chain wheel |
DE19517677A1 (en) * | 1995-05-13 | 1996-11-21 | Christian Seibert | Crank for converting a linear movement into a rotary movement, or vice versa |
WO1999022981A1 (en) * | 1997-10-30 | 1999-05-14 | Haaheim Oeyvind | Cycle crank |
WO2000056596A1 (en) * | 1999-03-22 | 2000-09-28 | Gerhard Hilber | Tread crank drive mechanism for a bicycle |
US6253639B1 (en) * | 1996-11-22 | 2001-07-03 | Ronald Hugh Richardson | Extensible crank |
WO2005087576A1 (en) * | 2004-03-09 | 2005-09-22 | Dabbaj Rad H | Drive mechanism and vehicle |
US20230192229A1 (en) * | 2021-12-16 | 2023-06-22 | John Daniel Corder | Pivoting Crank Arm for Increased Torque |
-
1984
- 1984-07-10 DE DE19843425342 patent/DE3425342A1/en not_active Withdrawn
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4793208A (en) * | 1985-03-13 | 1988-12-27 | Societe Look | Crank-gear for bicycle or similar locomotion vehicle |
US5157988A (en) * | 1991-06-11 | 1992-10-27 | Pinkstock Donald H | Elastic crank for bicycles |
DE4139689A1 (en) * | 1991-08-16 | 1993-02-18 | Rees Bertram Dipl Paed | Bicycle pedal crank with variable geometry - has two crank arms commonly rotatable on pedal bearing axis, each comprising two articulated arm parts |
DE4227229A1 (en) * | 1992-08-17 | 1994-02-24 | Karlernst Sewing | Automatic gear change system for bicycles - has elastic element for mechanical coupling of crank and chain wheel |
DE19517677A1 (en) * | 1995-05-13 | 1996-11-21 | Christian Seibert | Crank for converting a linear movement into a rotary movement, or vice versa |
US6253639B1 (en) * | 1996-11-22 | 2001-07-03 | Ronald Hugh Richardson | Extensible crank |
WO1999022981A1 (en) * | 1997-10-30 | 1999-05-14 | Haaheim Oeyvind | Cycle crank |
AU732911B2 (en) * | 1997-10-30 | 2001-05-03 | Oyvind Haaheim | Cycle crank |
WO2000056596A1 (en) * | 1999-03-22 | 2000-09-28 | Gerhard Hilber | Tread crank drive mechanism for a bicycle |
WO2005087576A1 (en) * | 2004-03-09 | 2005-09-22 | Dabbaj Rad H | Drive mechanism and vehicle |
US20230192229A1 (en) * | 2021-12-16 | 2023-06-22 | John Daniel Corder | Pivoting Crank Arm for Increased Torque |
US11814134B2 (en) * | 2021-12-16 | 2023-11-14 | John Daniel Corder | Pivoting crank arm for increased torque |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AF | Is addition to no. |
Ref country code: DE Ref document number: 3411008 Format of ref document f/p: P |
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8141 | Disposal/no request for examination |