CH217381A - Bicycle crankset. - Google Patents
Bicycle crankset.Info
- Publication number
- CH217381A CH217381A CH217381DA CH217381A CH 217381 A CH217381 A CH 217381A CH 217381D A CH217381D A CH 217381DA CH 217381 A CH217381 A CH 217381A
- Authority
- CH
- Switzerland
- Prior art keywords
- crankset
- pinions
- pedals
- concentric
- sub
- Prior art date
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
- B62M3/00—Construction of cranks operated by hand or foot
- B62M3/08—Pedals
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
- Motorcycle And Bicycle Frame (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Description
Pédalier de bicyclette. L'objet de l'invention est , pédalier de bicyclette.
Ce pédalier est caractérisé parle fait que les pédales sont rotativement accouplées entre elles de telle façon que dans toutes les posi tions qu'elles sont isusceptibles d'occuper, et indépendamment de la position des mani velles, les plans de leurs surfaces d'appui restent parallèles entre eux.
Ce résultat peut, par exemple, être obtenu conformément à la. forme d'exécution repré sentée au dessin et décrite ci-après, en ren dant chaque pédale solidaire .d'un pignon, en faisant passer sur chacun desdifs, pignons une chaîne sans fin, -et en conduisant enfin cha cune de ces chaînes sur un second pignon concentrique à l''axe du pédalier, ces -deux se conds pignons étant rotativement reliés entre eux, mais libres-de. tourner par rapport aux organes du pédalier.
La fi-. 1 représente une vue latérale @de la forme d'exécution décrite, dont la fig. 2 est une vue en plan avec coupe partielle, Le pédalier représenté comporte, comme tout pédalier, un arbre 1, auquel sont figées les manivelles 2, aux extrémités desquelles sont vissées les pédales â@, cet arbre suppor tant la roue de chaîne habituelle 4.
11 diffère des autres pédaliers par le fait qu'à chaque pédale est adjoint un pignon 5, et par le fait que l'arbre 1 étant creux, il est traversé par un second arbre 6, portant à chacune de ses extrémités un pignon 7.
Le tout est disposé de manière que, de chaque côté du pédalier, se trouvent un pi gnon 5 et un pignon 7 situés dans un même plan, ce qui permet de les relier par une chaîne sans fin & .
En ayant soin de prévoir tous les pignons de même diamètre, ou encore les pignons de pédales 5 d'un diamètre donné et tee pignons 7 -concentriques à l'axe du pédalier, d'un autre diamètre donné, -on voit que pour une rotation d'un angle -donné d'une pédale, il devra se produire obligatoirement une rota tion d'un même angle de l'autre pédale, et cela indépendamment de la position des ma- nivelles ?, car l'arbre 6 tourne fou dans l'arbre 1.
En ayant soin, lors du montage des pignons 5, î et des chaînes 8, de caler ces organes de manière à ce que les surfaces d'appui des pédales occupent des plans paral lèles entre eux, comme c'est le cas sur le des sin, on voit que dans toutes les positions que les pédales pourront occuper par la, suite, ce parallélisme sera obligatoirement conservé.
L'expérience a montré que cette disposi tion, qui oblige le cycliste sans peine à main tenir ses pieds en bonne position en cours de pédalage, présente l'avantage d'augmenter le rendement, ce qui se traduit aussi par une diminution de la fatigue.
Bicycle crankset. The object of the invention is a bicycle crankset.
This crankset is characterized by the fact that the pedals are rotatably coupled together in such a way that in all the positions which they are capable of occupying, and regardless of the position of the cranks, the planes of their bearing surfaces remain. parallels between them.
This result can, for example, be obtained in accordance with the. embodiment shown in the drawing and described below, by making each pedal integral with a pinion, by passing over each of the dives, pinions an endless chain, -and finally driving each of these chains on a second pinion concentric with the axis of the crankset, these -two second pinions being rotatably connected to each other, but free-of. turn in relation to the components of the crankset.
The fi-. 1 shows a side view of the embodiment described, of which FIG. 2 is a plan view in partial section, The crankset shown comprises, like any crankset, a shaft 1, to which the cranks 2 are fixed, at the ends of which the pedals are screwed â @, this shaft supporting the usual chain wheel 4 .
11 differs from other cranksets in that a pinion 5 is added to each pedal, and in that the shaft 1 is hollow, it is crossed by a second shaft 6, carrying at each of its ends a pinion 7.
Everything is arranged so that, on each side of the crankset, there is a pin gnon 5 and a pinion 7 located in the same plane, which allows them to be connected by an endless chain &.
While taking care to provide all the pinions of the same diameter, or the pinions of pedals 5 of a given diameter and tee pinions 7 -concentric to the axis of the crankset, of another given diameter, -we see that for a rotation of a given angle of one pedal, it must necessarily occur a rotation of the same angle of the other pedal, and this regardless of the position of the cranks?, because the shaft 6 turns crazy in tree 1.
Taking care, when mounting the pinions 5, î and chains 8, to wedge these members so that the bearing surfaces of the pedals occupy planes parallel to each other, as is the case on the des sin, we see that in all the positions that the pedals can occupy thereafter, this parallelism will necessarily be preserved.
Experience has shown that this arrangement, which makes it easy for the cyclist to keep his feet in the correct position during pedaling, has the advantage of increasing efficiency, which also results in a reduction in fatigue. .
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH217381T | 1940-12-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH217381A true CH217381A (en) | 1941-10-15 |
Family
ID=4450078
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH217381D CH217381A (en) | 1940-12-09 | 1940-12-09 | Bicycle crankset. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH217381A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2663898A1 (en) * | 1990-06-29 | 1992-01-03 | Laporte Jacques | Device making it possible to slave the useful position of a bicycle pedal to the rotational movement of its crank |
DE19904114A1 (en) * | 1999-02-02 | 2000-08-03 | Ekkehard Gorski | Connecting element for bicycles and particularly bicycle pedals has first connecting element attached to shoe of rider and provided with rectilinear slot interacting with second connecting element |
NL1025249C2 (en) * | 2004-01-15 | 2005-07-18 | Anthony Petrus Canisiu Coumans | Torque Pedal. |
-
1940
- 1940-12-09 CH CH217381D patent/CH217381A/en unknown
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2663898A1 (en) * | 1990-06-29 | 1992-01-03 | Laporte Jacques | Device making it possible to slave the useful position of a bicycle pedal to the rotational movement of its crank |
DE19904114A1 (en) * | 1999-02-02 | 2000-08-03 | Ekkehard Gorski | Connecting element for bicycles and particularly bicycle pedals has first connecting element attached to shoe of rider and provided with rectilinear slot interacting with second connecting element |
NL1025249C2 (en) * | 2004-01-15 | 2005-07-18 | Anthony Petrus Canisiu Coumans | Torque Pedal. |
WO2005073067A1 (en) | 2004-01-15 | 2005-08-11 | Coumans Anthony Petrus Canisiu | Torque pedal |
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