AT408742B - Leg muscle powered apparatus - Google Patents
Leg muscle powered apparatus Download PDFInfo
- Publication number
- AT408742B AT408742B AT0067499A AT67499A AT408742B AT 408742 B AT408742 B AT 408742B AT 0067499 A AT0067499 A AT 0067499A AT 67499 A AT67499 A AT 67499A AT 408742 B AT408742 B AT 408742B
- Authority
- AT
- Austria
- Prior art keywords
- pedal
- frame
- bearing
- crank
- cranks
- Prior art date
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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
- B62M1/00—Rider propulsion of wheeled vehicles
- B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
- B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating levers
-
- 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
- B62M3/06—Construction of cranks operated by hand or foot with elliptical or other non-circular rotary movement
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Steering Devices For Bicycles And Motorcycles (AREA)
Abstract
Description
AT 408 742 BAT 408 742 B
Die Erfindung bezieht sich auf ein beinmuskelbetriebenes Gerät, vorzugsweise Fahrrad, mit einem Rahmen, einem sich nach vorne verjüngenden Sitz (Sattel), zwei Tretkurbeln, drehfest beiderseits an einer Tretkurbelwelie befestigt, wobei das Ende jeder Tretkurbel drehbar mit einer starren Koppel verbunden ist, an derem einen Ende drehbar ein Pedal und an derem anderen Ende drehbar eine Schwinge gelagert ist, die ihrerseits mit ihrem anderen Ende mittels eines Drehgelenks am Rahmen befestigt ist, wobei das Drehgelenk hinter der Verbindungslinie zwischen Tretkurbelwelle und vorderstem Punkt des Sattels liegt.The invention relates to a leg-muscle-operated device, preferably a bicycle, with a frame, a tapered seat (saddle), two pedal cranks, non-rotatably fastened on both sides to a pedal crank, the end of each pedal crank being rotatably connected to a rigid coupling one end of which is rotatably a pedal and at the other end of which a rocker is rotatably mounted, which in turn is attached to the frame at its other end by means of a swivel joint, the swivel joint being located behind the connecting line between the crankshaft and the foremost point of the saddle.
Eine der Konstruktionen, die auf eine höhere Leistungswirksamkeit abzielen, ist in der Patentschrift US 5 172 926 A ausgeführt. Die Pedalbahn ergibt sich als nahezu ellipsenförmig mit deutlicher vertikaler Ausrichtung. Diese Erfindung kann somit jener Gruppe von Erfindungen zugeordnet werden, bei denen die Pedalführung näherungsweise oder vollständig linear in Richtung der Verbindungslinie vom Hüftgelenk zur Kurbelachse erfolgt. Als Argument für die Vorteilhaftigkeit einer solchen Pedalführung wird meist ins Treffen geführt, daß, wenn das Pedal linear von der Hüfte wegbewegt wird, die größte antriebswirksame Kraft aufgebracht werden kann.One of the constructions aimed at higher efficiency is described in US Pat. No. 5,172,926. The pedal track is almost elliptical with a clear vertical orientation. This invention can thus be assigned to that group of inventions in which the pedal guidance takes place approximately or completely linearly in the direction of the connecting line from the hip joint to the crank axis. As an argument for the advantage of such a pedal guide, the most common argument is that when the pedal is linearly moved away from the hip, the greatest driving force can be applied.
Neuere biomechanische Erkenntnisse (Pawlik, „Biomechanik des Radfahrens“, Dissertation 1992) zeigen jedoch, daß diese Argumentation Denkfehler beinhaltet, und jedenfalls mit einer solchen Pedalbahn keine Leistungssteigerung gegenüber der herkömmlichen Kreisbahn zu erzielen ist. Im Gegenteil: Entsprechend einem Ergebnis der Dissertation sollte eine leistungswirksame Pedalbahn eher eine liegende Ellipsenform aufweisen.However, more recent biomechanical findings (Pawlik, "Biomechanics of Cycling", dissertation 1992) show that this reasoning contains mistakes in thinking, and in any case, with such a pedal track no increase in performance compared to the conventional circular track can be achieved. On the contrary: According to a result of the dissertation, a pedal track with effective performance should have a lying elliptical shape.
Auch gemäß der Patenschrift CH 635639 A5 liegt die Hauptachse der Pedalellipse zu stark in vertikaler Position. In der dargestellten Konfiguration des Antriebs wird also das angestrebte Erfindungsziel der Leistungssteigerung nicht erreicht.According to patent specification CH 635639 A5, the main axis of the pedal ellipse is too strong in the vertical position. In the configuration of the drive shown, the desired invention goal of increasing performance is therefore not achieved.
Gemäß der DE 32 41 142 A1 ist die Schwinge durch eine Kulisse ersetzt, die einer unendlich langen Schwinge entsprechen würde und die in Fig. 2 eingezeichnete Pedalbahn nicht erzeugen kann.According to DE 32 41 142 A1, the rocker is replaced by a backdrop which would correspond to an infinitely long rocker and which cannot produce the pedal track shown in FIG. 2.
Der hier eingereichten Erfindung liegt somit die Aufgabe zugrunde, mit dem beschriebenen Antriebsmechanismus durch geeignete Wahl seiner Parameter (z.B. Längenverhältnisse, Winkel der Koppel) eine für größtmögliche Leistungsabgabe optimale Tretbewegung zu realisieren.The invention submitted here is therefore based on the task of realizing an optimal pedaling movement for the greatest possible power output with the drive mechanism described by suitable selection of its parameters (e.g. length ratios, coupling angle).
Die Erfindung löst die gestellte Aufgabe dadurch, daß der Antriebsmechanismus und seine Anordnung innerhalb des beinmuskelbetriebenen Gerätes in spezieller Weise konfiguriert ist. Charakteristisch für diese Anordnung ist, daß das Verhältnis zwischen Koppellänge und Schwingenlänge zwischen 0.6 und 1 liegt und die Verbindungslinie Tretkurbeldrehpunkt - Schwingendrehpunkt mit der Verbindungslinie Tretkurbeldrehpunkt - Pedaldrehpunkt einen stumpfen Winkel zwischen 90 und 140 Grad einschließt.The invention achieves the object in that the drive mechanism and its arrangement within the leg muscle-operated device is configured in a special way. It is characteristic of this arrangement that the relationship between the coupling length and the rocker arm length lies between 0.6 and 1 and the connecting line pedal crank pivot point - swing arm pivot with the connecting line pedal crank pivot point - pedal pivot point includes an obtuse angle between 90 and 140 degrees.
Durch die erfindungsgemäße Konfiguration des beschriebenen Antriebsmechanismus kann die Maximalleistungsabgabe des Pedalierenden, beispielsweise Radsportlers, gesteigert werden. In einer noch unveröffentlichten Dissertation von Thomas Angeli wurde in ausführlichen, wissenschaftlichen Leistungsvergleichstests eine Steigerung der erzielbaren Maximalleistung von durchschnittlich 5,2 % gegenüber dem konventionellen, kreisförmigen Fahrradantrieb festgestellt. Da die Leistungssteigerung nach einer Vorbelastung, sozusagen im bereits ermüdeten Zustand des Radfahrers prozentuell (18.3%) noch höher ausfiel, kann geschlossen werden, daß die erfindungsgemäße Konfiguration des Antriebs ein geringeres Koordinationsvermögen des Radfahrers erfordert.The configuration of the drive mechanism described according to the invention allows the maximum power output of the pedaling person, for example a cyclist, to be increased. In an as yet unpublished dissertation by Thomas Angeli, an increase in the achievable maximum performance of 5.2% on average was found in extensive, scientific performance comparison tests compared to the conventional circular bicycle drive. Since the increase in performance after a preload, as it were in the already fatigued condition of the cyclist in percent (18.3%) was even higher, it can be concluded that the configuration of the drive according to the invention requires less coordination ability of the cyclist.
In der Zeichnung ist der Erfindungsgegenstand, beispielhaft in Form eines Fahrrads, dargestellt. Es zeigenThe subject matter of the invention is shown in the drawing, for example in the form of a bicycle. Show it
Fig. 1 Das Fahrrad in einer SeitenansichtFig. 1 The bike in a side view
Fig. 2 ausschnittsweise den Antriebsmechanismus, seine Lage zum Sattel, und die entstehende PedalbahnFig. 2 detail of the drive mechanism, its location to the saddle, and the resulting pedal track
Fig. 3 einen Schnitt gemäß der Linie lll-lll der Fig. 1, wobei für ein besseres Verständnis der Antriebsmechanismus selbst vollständig dargestellt ist, und andere, für die Erfindung unwesentliche Teile wie Lenker und Sattel nicht dargestellt sind.Fig. 3 is a section along the line III-III of Fig. 1, the drive mechanism itself being shown completely for a better understanding, and other parts which are not essential to the invention, such as the handlebar and saddle, are not shown.
Zwei Kurbeln (2,2') sind drehbar gegenüber dem Fahrradrahmen (1) gelagert. Die Verbindung zwischen der rechtsseitig und linksseitig gelegenen Kurbel stellt die Lagereinheit (7) dar, die Drehachse ist 12. In bekannter Weise wird die Drehbewegung der Kurbeln über ein Kettenblatt (8), das über einen Kurbelstern (9) fest mit der rechtsseitigen Kurbel (2) verbunden ist, und eine Kette an 2Two cranks (2,2 ') are rotatably mounted with respect to the bicycle frame (1). The connection between the right-hand and left-hand crank is the bearing unit (7), the axis of rotation is 12. In a known manner, the rotation of the cranks is via a chainring (8), which is fixed to the right-hand crank via a crank star (9) ( 2) and a chain to 2
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0067499A AT408742B (en) | 1999-04-15 | 1999-04-15 | Leg muscle powered apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0067499A AT408742B (en) | 1999-04-15 | 1999-04-15 | Leg muscle powered apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
ATA67499A ATA67499A (en) | 2001-07-15 |
AT408742B true AT408742B (en) | 2002-02-25 |
Family
ID=3496846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT0067499A AT408742B (en) | 1999-04-15 | 1999-04-15 | Leg muscle powered apparatus |
Country Status (1)
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AT (1) | AT408742B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1431171A2 (en) * | 2002-12-17 | 2004-06-23 | Naotaka Gayoh | Pedal crank mechanism for bicycle |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US615158A (en) * | 1898-11-29 | Philipp goldmann | ||
CH635039A5 (en) * | 1980-11-27 | 1983-03-15 | Jentschmann Jakob Fa | Drive device on a bicycle |
DE3241142A1 (en) * | 1981-11-09 | 1983-06-01 | Fa. Jakob Jentschmann, 8048 Zürich | Pedal crank drive device for a bicycle |
US5172926A (en) * | 1990-12-06 | 1992-12-22 | Mannino Paul V | Pedal drive mechanism |
-
1999
- 1999-04-15 AT AT0067499A patent/AT408742B/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US615158A (en) * | 1898-11-29 | Philipp goldmann | ||
CH635039A5 (en) * | 1980-11-27 | 1983-03-15 | Jentschmann Jakob Fa | Drive device on a bicycle |
DE3241142A1 (en) * | 1981-11-09 | 1983-06-01 | Fa. Jakob Jentschmann, 8048 Zürich | Pedal crank drive device for a bicycle |
US5172926A (en) * | 1990-12-06 | 1992-12-22 | Mannino Paul V | Pedal drive mechanism |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1431171A2 (en) * | 2002-12-17 | 2004-06-23 | Naotaka Gayoh | Pedal crank mechanism for bicycle |
EP1431171A3 (en) * | 2002-12-17 | 2006-06-28 | Naotaka Gayoh | Pedal crank mechanism for bicycle |
Also Published As
Publication number | Publication date |
---|---|
ATA67499A (en) | 2001-07-15 |
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ELJ | Ceased due to non-payment of the annual fee | ||
EWE | Authorization for restitution | ||
ELJ | Ceased due to non-payment of the annual fee |