FR2824803A1 - Cycle pedal gear with elliptical rotation comprises rod on each side receiving pedal at one end and eyelet at other, crank end rotates about spindle in rod middle and eyepiece translates horizontally in runner - Google Patents

Cycle pedal gear with elliptical rotation comprises rod on each side receiving pedal at one end and eyelet at other, crank end rotates about spindle in rod middle and eyepiece translates horizontally in runner Download PDF

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Publication number
FR2824803A1
FR2824803A1 FR0106538A FR0106538A FR2824803A1 FR 2824803 A1 FR2824803 A1 FR 2824803A1 FR 0106538 A FR0106538 A FR 0106538A FR 0106538 A FR0106538 A FR 0106538A FR 2824803 A1 FR2824803 A1 FR 2824803A1
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France
Prior art keywords
crank
pedal
rod
spindle
eyepiece
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Granted
Application number
FR0106538A
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French (fr)
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FR2824803B1 (en
Inventor
Andre Farison
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Individual
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Individual
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Expired - Fee Related legal-status Critical Current

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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
    • B62M1/36—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
    • 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
    • B62M3/02—Construction of cranks operated by hand or foot of adjustable length
    • B62M3/04—Construction of cranks operated by hand or foot of adjustable length automatically adjusting

Abstract

The pedal gear driving a chain pinion comprises a rod on each side receiving a pedal (P) at one end and an eyelet at the other end. The rod is provided in its middle with a spindle in which the end of the crank (M) rotates. The eyepiece translates horizontally in a runner fixed to the cycle. This translation causes the crank to rotate about the spindle and induce an elliptical trajectory to the pedal

Description

interne du tuyau de manière à éviter les écrasements du tuyau.internal of the pipe so as to avoid crushing of the pipe.

- -- -

DESCRIPTIONDESCRIPTION

La présente invention concerne un dispositif pour transformer la force musculaire exercée par les jambes de l'utilisateur (cycliste) afin de faire avancer un véhicule (bicyclette ou autre machine terrestre, aquatique ou aérienne). 1e o procédé habituel est un péJalier constitué de deux manivelles tournant autour d'un axe, entraînant un pignon à chaîne. Ce qui oblige une course " morte " de remontées circulaires, et de méme importance que  The present invention relates to a device for transforming the muscular force exerted by the legs of the user (cyclist) in order to advance a vehicle (bicycle or other land, water or air machine). 1e o usual process is a pJalier consisting of two cranks rotating around an axis, driving a chain sprocket. This requires a "dead" race of circular lifts, and of the same importance as

la course de " travail ".the "work" race.

s Le dispositif selon I' invention permet de réduire considérablement la course morte de remonter puisque, la biellette se replie sur elle-même, grâce à une articulation en son milieux. La péJale,et, donc le pied de l'utilisateur,décrit une ellipse, o Ce dispositif permet d' augmenter la longueur de la manivelle, (ce qui a pour effet direct, de diminuer I' effort à fournir), puisqu'on limite l'ampleur du  s The device according to the invention makes it possible to considerably reduce the dead travel to go up since, the link folds back on itself, thanks to an articulation in its middle. The peJale, and, therefore, the foot of the user, describes an ellipse, o This device makes it possible to increase the length of the crank, (which has the direct effect of reducing the effort to be provided), since limits the extent of

mouvement arrière de remonter.backward movement to go up.

Selon le mode de réalisation, l' invention permet de supprimer en totalité le moment des points morts " haut et bas ". En effet le mouvement elliptique de la pédale, permet à celle-ci, d' arriver en position de " travail " avant que la péJale opposée n'ait fini sa phase de " travail ". On so transforme ainsi un inconvénient en un avantage  According to the embodiment, the invention makes it possible to completely eliminate the moment of "top and bottom" dead centers. Indeed, the elliptical movement of the pedal allows it to arrive in the "working" position before the opposite peJale has finished its "working" phase. So we transform a disadvantage into an advantage

_ 2_ 2824803_ 2_ 2824803

certain. Les deux pédales fournissant l' effort en même temps.(Les deux pédales ne sont jamais àl80 ) On appellera " Manivelle " M lamanivelle existante sur une bicyclette normale, réduite en longueur et ayant une articulation à la place de la  certain. The two pedals providing the effort at the same time (The two pedals are never at 180) We will call "Crank" M existing crank on a normal bicycle, reduced in length and having an articulation instead of the

péJale initiale.initial tax.

On appellera " Bielle " B l'éléments beaucoup plus long, au bout duquel on fixera la pédale P. articulé en son milieu sur la manivelle M et, ayant à o l'autre extrémité,une articulation appelée _illeton  We will call "Bielle" B the much longer elements, at the end of which we will fix the pedal P. articulated in its middle on the crank M and, having at o the other end, a joint called _illeton

" O ", pour fixer le dispositif de translation.  "O", to fix the translation device.

On appellerà " Glissière " G. le système qui va commander l'_illeton et inculquer, une trajectoire forcée,à l'extrémité de la Bielle, un mouvement horizontal rectiligne de tranelation. Cette glissière G est fixé rgidement sur la bicyclette. Elle est reliée à l'osilleton de la bielle. Sous l'effet de la rotation normale de la manivelle M, l'oeilleton amorce sa course vers l'arrière (FIG.1) et oblige la péJale a remonter (FIG.2)et à se replier, sur la manivelle, jusqu'à ce qu'elle vienne se superposer sur la bielle. En position horizontale (Fig.3) l'oeilleton est alors en position " maxi arrière " dans la glissière. Puis continuant sa rotation, la manivelle oblige l'oeilleton à revenir vers l' avant (FIG.4),et, ainsi, faire s'éloigner lapédale de l'axe du péJalier, jusqu'à sa postion " avant ",o la péJale se retrouva prête à recommencer une course  We call to "Glissière" G. the system which will control the _illeton and instill, a forced trajectory, at the end of the Rod, a straight horizontal movement of tranelation. This slide G is fixed regularly on the bicycle. It is connected to the rod eye. Under the effect of the normal rotation of the crank M, the eyecup starts its backward movement (FIG.1) and forces the peJale to go up (FIG.2) and to be folded, on the crank, until so that it comes to be superimposed on the connecting rod. In the horizontal position (Fig.3) the eyepiece is then in the "maxi rear" position in the slide. Then continuing its rotation, the crank forces the eyecup to come back forward (FIG.4), and, thus, make the pedals move away from the axis of the peJalier, until its "front" position, where the peJale found himself ready to start a race again

de travail (FIG.5).of work (FIG.5).

_ 3 Pendant la course de travail, l'_illeton O, : dispose encore d'une petite distance dans la glissière G,de manière a pouvoir effectuer sa rotation normale,en avant. La manivelle opposce s subit alors une rotation qui va actionner l'_illeton dans glissière opposoe et, donc, faire fonctionner :: tout le dispositif de re-pliage de la Bielle, en :  _ 3 During the working stroke, the eye O,: still has a small distance in the slide G, so that it can perform its normal rotation forward. The opposite crank then undergoes a rotation which will actuate the eyecup in the opposite slide and, therefore, operate :: the entire re-folding device of the connecting rod, by:

course morte.dead race.

: La figure 6,résume les différentes étapes 0 1ntermédiaires iles:positions de la manivelle et de la Bielle, et montre bien le déplacement de remontée elliptique de la pédale I1 y a un dispositif par manivelle, de chaque côté, qui travaillent séparément, mais qui sont,  : Figure 6, summarizes the different stages 0 1ntermediate iles: positions of the crank and the connecting rod, and clearly shows the elliptical upward movement of the pedal I1 there is a device per crank, on each side, which work separately, but which are,

SoUS 1' effet des manivelles,symétriquement opposés.  SOUS the effect of the cranks, symmetrically opposite.

Pour un fonctionnement souple et continu, on peut améliorer le système,en rempla,cant la glissière G par un mécanisme de biellettes,articulées (pantographe),avec de petits roulements a aiguilles aux articulations. Ce dispositif a pour avantage d'offrir un mouvement très " doux " avec une résistance pratiquement nulle. La FIG.7 montre l'_illeton O qui amorce sa, course vers l'arrière \ poussée par la bielle B qui est elle même poussée par 2s la rotation de Ia maniveIle M suivant une trajectoire forcée, horizontale, transmise par un système de biellettes " pantographe " se terminant par un levier en équerre (FIG.8). L'_illeton O est contraint de reculer et oblige la péJale P à se r 2824803 replier sur la manivelle M (FI&.9). Puis continuant sa rotation, la manivelle M oblige l'_illeton O à revenir vers l' avant (FIG.lO). Ce dernier ayant une trajectoire rectiligne inculquce s par le pantographe fait éloigner la péJale P qui remonte jusqu'à sa position de départ, pour une nouvelle course de travail (FIG.ll). La FIG.12 résume les différentes opérations et montre les biellettes en pantographe terminées par un levier en équerre sur o lequel est fixé l'_illeton O et permet de comprendre  For a flexible and continuous operation, the system can be improved, replacing the cant G by a mechanism of articulated links (pantograph), with small needle bearings at the joints. This device has the advantage of offering a very "soft" movement with practically zero resistance. FIG. 7 shows the eyelet O which starts its, backward movement \ pushed by the connecting rod B which is itself pushed by 2s the rotation of the hand crank M following a forced, horizontal trajectory, transmitted by a system of connecting rods "pantograph" ending with a square lever (FIG.8). The eyepiece O is forced to move back and forces the peJal P to r 2824803 to fold back on the crank M (FI & .9). Then continuing its rotation, the crank M forces the eyelet O to return forward (FIG.lO). The latter having a rectilinear trajectory inculcated by the pantograph causes the PJale, which goes up to its starting position, to be moved away, for a new working stroke (FIG.ll). FIG.12 summarizes the different operations and shows the rods in pantograph terminated by a square lever on o which is fixed the eye O and allows to understand

la trajectoire forcée,horizontale de ce dernier.  the forced, horizontal trajectory of the latter.

:: :::: Il faut préciser qu'en " course travail ",lorsque la péJale P amorce sa descente (FIG 13),1'_illeton O continu à avancer de manière a permettre le mouvement  :: :::: It should be noted that in "working race", when the P legal starts its descent (FIG 13), the eye O continues to advance so as to allow movement

de la manivelle M et de la biellette B.(FIG 14).  the crank M and the connecting rod B. (FIG 14).

Si on appel A,l'axe autour duquel tourne le : péJalier initial, et donc la manivelle M, suivant un cercle " immuable " et X l' articulation o est fixée la manivelle M, sur la biellette B (FIG 13), on réalisera une cote OZ supérieure à AX (FIG 15) de façon a permettre la rotation, et ainsi,obtenir une course de descente en travail ELLIPTQUE.(FIG18) D'o l'avantage de ne pas faire superposer les 2s points O et A. :  If we call A, the axis around which rotates the initial peJalier, and therefore the crank M, according to an "immutable" circle and X the articulation o is fixed the crank M, on the rod B (FIG 13), we will perform a dimension OZ greater than AX (FIG 15) so as to allow rotation, and thus, obtain a downward stroke in ELLIPTIC work. (FIG 18) Hence the advantage of not overlapping the 2 points O and A .:

- 2824803- 2824803

De plus,en jouant sur la longueur et l' emplacement des biellettes, on peut faire varier  In addition, by varying the length and location of the links, we can vary

l'ampleur et la courbe de l' ellipse de la pédale. -  the magnitude and curve of the pedal ellipse. -

Ces biellettes pourront être de différentes formes,longueurs et différents matériaux(Aluminium, plastique, nylon, carbone ect... de manière a \  These rods can be of different shapes, lengths and different materials (aluminum, plastic, nylon, carbon ect ... so that a \

améliorer la résistance ou a diminuer le poids.  improve resistance or decrease weight.

Le dispositif selon l' invention est particulièrement destiné à réduire l' effort à fournir sur un péJalier, ainsi qu'a améliorer le confort et  The device according to the invention is particularly intended to reduce the effort to be provided on a peJalier, as well as to improve comfort and

la position de l'utilisateur.user position.

Du fait que l'utilisateur n'est plus contraints à ce mouvement de remontée arrière, on peut concevoir une selle, ou autres sièges, large et confortable, avec même un petit dossier,ce qui augmenterait encore la force appliquée sur les pédales, en  Due to the fact that the user is no longer constrained to this rearward movement, it is possible to design a saddle, or other seats, large and comfortable, with even a small backrest, which would further increase the force applied to the pedals,

procurant un confort optimum.providing optimum comfort.

_ 6_ 6

Claims (2)

REVENDICATIONS --1- Pédalier entraînant un pignon à chane caractérisé en ce qu'il comporte de chaque côté une bielle (B) recevant à:une extrémité une pédale (P) et  --1- Crankset driving a chain sprocket characterized in that it comprises on each side a connecting rod (B) receiving at: one end a pedal (P) and à l'autre extrémité un _illeton (O).  at the other end a _illeton (O). Cette bielle (B) est: dotée en son milieu- d'un axe o (X) dans lequel vient tourner l'extrémité de la manivelle(M). ce qui a pour effet de faire une articulation entre la bielle B et la manivelle M.  This connecting rod (B) is: provided in the middle with an axis o (X) in which the end of the crank (M) turns. which has the effect of making an articulation between the connecting rod B and the crank M. (FIG 1 A 5)(FIG 1 TO 5) --2- Pédalier selon la revendication -1-  --2- Crankset according to claim -1- caractérisé en ce que l'_illeton (O) se déplace horizontalement en translation dans une glissière (G)  characterized in that the eye (O) moves horizontally in translation in a slide (G) fixée rigidement à la bicyclette.rigidly attached to the bicycle. Cette translatlon forcée,oblige la bielle (B) à se replier sur la manivelle (M),autour du point X,ce: qui induit une trajectoire elliptique à la pédale ( --3-Pédalier selon la revendication -2 caractérisé en ce que l'_illeton (O), pour induire le déplacement de translation forcé,peut être fixé sur un levier en équerre,placé à l'extrémité de deux biellettes en pantographe, fixées rigidement sur la  This forced translatlon, obliges the connecting rod (B) to fold back on the crank (M), around the point X, which: which induces an elliptical trajectory with the pedal (--3-Pedalboard according to claim -2 characterized in that the eyecup (O), to induce forced translational displacement, can be fixed on a square lever, placed at the end of two pantograph rods, rigidly fixed on the
FR0106538A 2001-05-17 2001-05-17 ELLIPTICAL ROTATION CRANKSET Expired - Fee Related FR2824803B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0106538A FR2824803B1 (en) 2001-05-17 2001-05-17 ELLIPTICAL ROTATION CRANKSET

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0106538A FR2824803B1 (en) 2001-05-17 2001-05-17 ELLIPTICAL ROTATION CRANKSET

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FR2824803A1 true FR2824803A1 (en) 2002-11-22
FR2824803B1 FR2824803B1 (en) 2003-12-05

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE824148C (en) * 1949-03-22 1951-12-10 Karl Koehnhak Pedal crank drive for bicycles
EP0285858A2 (en) * 1987-04-03 1988-10-12 Brai Systems Srl Torque-multiplying kinematic device particularly for bicycles and bicycles employing said kinematic device
EP0963905A2 (en) * 1998-06-12 1999-12-15 Sony Corporation Bicycle

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE824148C (en) * 1949-03-22 1951-12-10 Karl Koehnhak Pedal crank drive for bicycles
EP0285858A2 (en) * 1987-04-03 1988-10-12 Brai Systems Srl Torque-multiplying kinematic device particularly for bicycles and bicycles employing said kinematic device
EP0963905A2 (en) * 1998-06-12 1999-12-15 Sony Corporation Bicycle

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Effective date: 20070131