FR2840873A1

FR2840873A1 - Bicycle transmission device comprises two levers each having freely rotating pedal at on end, support point and rotating shaft defining crank on each lever rotating about same axis

Info

Publication number: FR2840873A1
Application number: FR0207450A
Authority: FR
Inventors: Didier Merle; Louis Veluire
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-17
Filing date: 2002-06-17
Publication date: 2003-12-19

Abstract

The transmission device is composed of two levers (100a,100b) which each comprise at a first end (110a,110b) a freely rotating pedal (111a,111b). The levers have a support point (310a) and a rotating shaft which defines on each lever first and second cranks (410a). The cranks each rotate about the same rotational axis (A1). The levers are located relative to their support point, to their rotational axis and relative to each other so that the action on the pedals ensures alternate pivoting of the levers for rotating the cranks. An Independent claim is included for a collection bag fitted with a drainage device.

Description

B 14124 GPB 14124 GP

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DISPOSIT1F DE MISE EN MOWEMT D'UN VEHICULE MU PAR LA FORCE PROVISION1F FOR MOWEMT OF A VEHICLE MOVED BY FORCE

MUSCULAIRE NOTAMMENT D'UNE BICYCLETTE MUSCULAR, ESPECIALLY OF A BICYCLE

DOMAINE TECHNIQUE D'APPLICATION DE L'lNVENTION s L' invention concerne le domaine des vehicules mus notamment par la force musculaire comme par exemple une bicyclette et plus particulierement les adaptations permettant d'en realiser la TECHNICAL FIELD OF APPLICATION OF THE INVENTION The invention relates to the field of vehicles driven in particular by muscular force such as for example a bicycle and more particularly the adaptations making it possible to carry out the

mise en mouvement avec une meilleure gestion de lteffort ou de la puissance developpee. setting in motion with better management of effort or developed power.

ETAT DE LA TECHNIQUESTATE OF THE ART

Aujourdthui, la plupart des vehicules mus par la force physique comme les cycles, les << Pedalos >>, voiturettes, le vent au moyen d'un systeme a pedalier. Le pedalier classique actuel comprend un plateau dense sur loquel est fixe de facon rigide a partir d'un arbre central les premieres extremites de manivelles, positionnees l'une par rapport a l'autre en opposition de phase, aux deuxiemes extremites desquelles se trouvent les pedales sur lesquelles appuie au moyen de ses pieds, 1'utilisateur du vehicule permettant de transformer le mouvement alternatif de ses jambes en Today, most vehicles powered by physical force such as cycles, "Pedalos", carts, the wind by means of a pedal system. The current classic crankset includes a dense chainring on which is rigidly fixed from a central shaft the first ends of cranks, positioned relative to each other in phase opposition, at the second ends of which are located the pedals which are supported by their feet, the user of the vehicle making it possible to transform the reciprocating movement of his legs into

mouvement de rotation autour audit arbre. rotational movement around said shaft.

Dans le cas d'une bicyclette, ce mouvement de rotation est transmis au moyen d'une cha^ne reliant ledit plateau dense a au moins un pigeon arriere lie en rotation a la roue arriere. Cette roue arriere etant en contact avec le sol, sa mise en mouvement declenche la mise en mouvement du vehicule et de son passager. Le systeme a pedalier classique a pour principal inconvenient de limiter lteffort a la longueur des manivelles reliant l'axe de rotation du plateau aux pedales. En effet, une augmentation de la longueur des manivelles provoquerait une obligation pour l'utilisateur de quitter sa selle pour atteindre le point mort teas et une flexion du genou tres desagreable pour atteindre le point mort haut ce qui, etant donne que les pedales vent disposees a 180 I'une de l'autre, serait pratiquement impossible. A contrario, une diminution de la longueur des manivelles aurait pour consequences une diminution du bras de levier et In the case of a bicycle, this rotational movement is transmitted by means of a chain connecting said dense plate to at least one rear pigeon linked in rotation to the rear wheel. This rear wheel being in contact with the ground, setting it in motion sets in motion the vehicle and its passenger. The main disadvantage of the classic pedal system is to limit the effort to the length of the cranks connecting the axis of rotation of the chainring to the pedals. Indeed, an increase in the length of the cranks would cause an obligation for the user to leave his saddle to reach the dead center teas and a very unpleasant knee flexion to reach the top dead center which, given that the wind pedals are arranged 180 from one another would be practically impossible. Conversely, a reduction in the length of the cranks would result in a reduction in the lever arm and

done une augmentation de lteffort necessaire a la mise en mouvement du vehicule. therefore an increase in the effort required to set the vehicle in motion.

En consequence, la bicyclette ainsi que tous les vehicules mus par la force physique sur la base d'un pedalier, adoptent un compromis entre la taille des membres inferieurs de leur utilisateur et lteffort Consequently, the bicycle as well as all vehicles powered by physical force on the basis of a crankset, adopt a compromise between the size of the lower limbs of their user and the effort

qu'ils peuvent et doivent fournir pour leur deplacement. that they can and must provide for their travel.

Un autre inconvenient du systeme pedalier classique se situe au passage des pedales au niveau de leur point mort haut et teas qui necessite un effort supplementaire dans le cadre du mouvement circulaire du pedalier. Another disadvantage of the classic pedal system is located at the passage of the pedals at their top dead center and teas which requires additional effort as part of the circular movement of the pedal.

DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION

Partant de cet etat de fait, le demandeur a mene des recherches a des fins d'une meilleure exploitation de ['effort musculaire pour la mise en mouvement d'un vehicule. Ces recherches ont On the basis of this fact, the applicant has carried out research for the purpose of better exploitation of the muscular effort for setting in motion a vehicle. This research has

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about) a la conception d' un dispositif particulierement original pouvant s ' adapter sur des systemes deja existants sans grandes modifcations ou pouvant s' installer directement lors de la fabrication d' un about) to the design of a particularly original device which can be adapted to already existing systems without major modifications or which can be installed directly during the manufacture of a

vehicule speciftquement concu a cet effet. vehicle specially designed for this purpose.

Ce dispositif a pour fonction de mieux lineariser les efforts necessaires a la mise en This device has the function of better linearizing the efforts necessary for the implementation

s mouvement et d'en diminuer l'intensite. s movement and decrease its intensity.

Selon ['invention, ce dispbsitif de mise en mouvement est remarquable en ce qu' il est constitue de deux leviers qui, comportant chacun a une premiere extremite un organe de commande de type pedale monte libre en rotation, presentent a leur deuxieme extremite et entre leurs deux extremites sur le reste de leur longueur un point d'appui et un arbre de rotation lequel defnit sur chaque levier une premiere et une deuxieme manivelles disposees, d'un levier par rapport a 1'autre, a sensiblement 180 I'une de l'autre et tournant chacune selon un meme premier axe de rotation, les deux leviers etant montes au moins pivotant et disposes par rapport a leur point d'appui, leur arbre de rotation et l'un par rapport a l'autre de fagon a ce que ['action sur les pedales presentes a leur premiere extremite assure le pivotement alternatif desdits leviers dans un mouvement en balancier pour According to the invention, this device for setting in motion is remarkable in that it consists of two levers which, each having at a first end a pedal-type control member mounted to rotate freely, have at their second end and between their two ends over the rest of their length, a fulcrum and a rotation shaft which defines on each lever a first and a second cranks arranged, with one lever relative to the other, at substantially 180 ° from one the other and each rotating along the same first axis of rotation, the two levers being mounted at least pivoting and arranged relative to their fulcrum, their shaft of rotation and one relative to the other in a manner that the action on the pedals present at their first end ensures the alternating pivoting of said levers in a pendulum movement for

entramer en rotation lesdites manivelles. rotating said cranks.

Ce nouveau systeme de pedalier ntest plus limite a la longueur des manivelles du pedalier classique puisqu'il propose des leviers dont l'axe de pivotement ntest plus constitue que par l'axe de rotation du moyen d'entrainement en rotation. Ainsi, le demandeur desolidarise la longueur des manivelles d'un pedalier classique de son axe de rotation en creant des leviers intermediaires ayant leur propre axe de pivotement qui peut se decaler de 1'axe de rotation des manivelles. Cette absence de limitation permet d'envisager des bras de levier d'une longueur autorisant un coeffcient multiplicateur largement superieur a celui propose par les manivelles d'un pedalier classique. Le rendement de ce type de moyen de m i se en mouvement en est done grandement am eliore. Selon une caracteri stique particulierement avantageuse de ['invention, les points d'appui de chaque levier vent constitues chacun par une articulation reunissant une liaison glissiere et une liaison pivot autorisant la rotation de la liaison glissiere selon un m8me deuxieme axe de rotation Cette caracteristique permet de guider le mouvement des leviers dont la liaison avec une manivelle requiert la possibilite d'un mouvement longitudinal tout en gardant la possibilite d'offrir un point d'appui au levier pour agir en tent que bras de levier. Ces points d'appui constitues chacun par une liaison glissiere associee a une liaison de type pivot ont d'un levier par rapport a 1'autre le meme axe de rotation. Cette caracteristique a en outre pour avantage de prevoir plusieurs possibilites de mise en aeuvre en creant un deuxieme axe de rotation, le premier et le deuxieme axes de rotation pouvant se placer indifferemment a la deuxieme extremite et entre les deux extremites du levier. Ainsi, ces points de pivotement etlou d'appui vent eux-m8mes dependents d'un axe de rotation ce qui participe a une meilleure gestion de la trajectoire 3s des premieres extremites de levier. Ces possibilites peuvent etre utilisees notamment dans le cadre This new crankset system is no longer limited to the length of the cranks of the conventional crankset since it offers levers whose pivot axis is no longer constituted except by the axis of rotation of the rotary drive means. Thus, the applicant dissociates the length of the cranks of a conventional crankset from its axis of rotation by creating intermediate levers having their own pivot axis which can be offset from the axis of rotation of the cranks. This absence of limitation makes it possible to envisage lever arms of a length authorizing a multiplier coefficient much greater than that proposed by the cranks of a conventional crankset. The efficiency of this type of moving medium is therefore greatly improved. According to a particularly advantageous characteristic of the invention, the support points of each wind lever each constituted by an articulation uniting a slide link and a pivot link allowing the rotation of the slide link according to the same second axis of rotation This characteristic allows to guide the movement of the levers, the connection of which with a crank requires the possibility of a longitudinal movement while retaining the possibility of offering a fulcrum for the lever to act as a tent as a lever arm. These support points each constituted by a sliding link associated with a pivot type link have a lever relative to the other the same axis of rotation. This characteristic also has the advantage of providing several possibilities of implementation by creating a second axis of rotation, the first and the second axes of rotation being able to be placed indifferently at the second end and between the two ends of the lever. Thus, these pivot points and / or wind support themselves depend on an axis of rotation which contributes to better management of the trajectory 3s of the first lever ends. These possibilities can be used especially in the context

d'une installation d'une bicyclette existante. an installation of an existing bicycle.

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Ainsi, selon d'autres caracteristiques particulierement avantageuses qui seront detaillees ci apres, le dispositif de ['invention peut avantageusement 8tre installe sans grande modification sur une bicyclette existante comportant un dispositif de mise en mouvement mis en ceuvre par un systeme pedalier classique. L'association du dispositif de ['invention a un pedalier classique anquel auraient ete s retirees les manivelles et les pedales d'origine a pour avantage d'utiliser le systeme de vitesse initial tout en proposant une mise en mouvement requerant un effort moindre. Ainsi, le demandeur a calcule quta effort egal une bicyclette classique adoptant le dispositif de ['invention pouvait atteindre une Thus, according to other particularly advantageous characteristics which will be detailed below, the device of the invention can advantageously be installed without major modification on an existing bicycle comprising a device for setting in motion implemented by a conventional pedal system. The association of the device of the invention with a conventional crankset which would have been removed from the original cranks and pedals has the advantage of using the initial speed system while proposing a setting in motion requiring less effort. Thus, the applicant has calculated that equal effort for a conventional bicycle adopting the device of the invention could reach a

vitesse trots fois superieure ou permettre une utilisation prolongee du fait de l'economie d'energie. speed three times higher or allow prolonged use due to energy saving.

Aussi, I'ensemble des moyens de locomotion non polluant en trouve leur utilite accrue de par les economies d'effort realisees. De meme, dans la mesure ou le mouvement alternatif des leviers serait mis en aeuvre par un moyen motorise, I'economie d'energie serait notable et la pollution s'en Also, all of the non-polluting means of locomotion find their usefulness increased by the savings in effort. Likewise, to the extent that the reciprocating movement of the levers would be implemented by a motorized means, the energy saving would be significant and pollution would be

trouverait diminuee.would find it diminished.

En effet, I'invention venant d'etre decrite dans ses aspects les plus generaux, d'autres caracteristiques et d'autres avantages techniques appara^tront plus precisement a la lecture du texte qui suit decrivant en regard des dessins annexes et a titre d'exemple non limitatif, un ou plusieurs modes de realisation du dispositif de mise en mouvement d'un vehicule mu par la force musculaire applique a Indeed, the invention having just been described in its most general aspects, other characteristics and other technical advantages will appear more precisely on reading the following text describing with reference to the accompanying drawings and by way of non-limiting example, one or more embodiments of the device for setting in motion a vehicle driven by muscular force applied to

une bicyclette.a bicycle.

BREVE DESCRIPTION DES DESSINSBRIEF DESCRIPTION OF THE DRAWINGS

La figure 1 est une vue schematique de cote d'un mode de realisation du dispositif de ['invention installe sur une bicyclette, La figure 2 est une vue d'ensemble d'une bicyclette sur laquelle a ete installe un deuxieme mode de realisation du dispositif de ['invention La figure 3a est une vue schematique de cote d'un detail du mode de realisation illustre en figures 1 et 2, La figure 3b est une vue schematique de dessus du detail illustre en figure 3a, La figure 4a est une vue schematique de cote d'un autre detail du mode de realisation illustre en figures I et 2, La figure 4b est une vue schematique de dessus du detail illustre en figure 4a, La figure Sa est une vue schematique de cote d'un autre detail du mode de realisation illustre en figures I et 2, Figure 1 is a schematic side view of an embodiment of the device of the invention installed on a bicycle, Figure 2 is an overview of a bicycle on which has been installed a second embodiment of the device of the invention FIG. 3a is a schematic side view of a detail of the embodiment illustrated in FIGS. 1 and 2, FIG. 3b is a schematic view from above of the detail illustrated in FIG. 3a, FIG. 4a is a schematic side view of another detail of the embodiment illustrated in Figures I and 2, Figure 4b is a schematic top view of the detail illustrated in Figure 4a, Figure Sa is a schematic side view of another detail of the embodiment illustrated in FIGS. I and 2,

La figure Sb est une vue schematique de dessus du detail illustre en figure 5a. Figure Sb is a schematic top view of the detail illustrated in Figure 5a.

DESCRIPTION APPUYEE SUR LES DESSINSDESCRIPTION BASED ON THE DRAWINGS

3s Comme illustre sur les dessins des fgures I et 2, le dispositif reference D dans son ensemble de mise en mouvement d'un vehicule est installe sur une bicyclette classique referencee B du type de 3s As illustrated in the drawings in FIGS. I and 2, the device reference D as a whole for setting in motion a vehicle is installed on a conventional bicycle referenced B of the type of

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celle dont le cadre forme un plan de symetrie vertical. Les padres d'elements constitutifs du dispositif D vent disposees de part et d'autre du plan vertical forme par le cadre de la bicyclette B. Ainsi, le dispositif D comprend deux leviers IOOa et lOOb disposes de part et d'autre du plan de symetrie forme par le cadre 200 de la bicyclette B. Sur une premiere extremite I lOa et I lOb de ces leviers lOOa et lOOb vent montes libres en rotation des organes de commande de type pedale I l la et Illb permettant a l'utilisateur de la bicyclette B d'actionner lesdits leviers lOOa et lOOb. Les deuxiemes extremites 120a et 120b desdits leviers lOOa et lOOb vent liees respectivement a une articulation formant point d'appui pour former un bras de levier dont senle 310a appara^t, ces points d'appui etant disposes de part et d'autre du plan de symetrie vertical forme par le cadre 200 de la bicyclette B. Ces deux articulations dont seule 310a apparaft, tournent chacune selon un meme the one whose frame forms a vertical plane of symmetry. The padres of constituent elements of the wind device D arranged on either side of the vertical plane formed by the frame of the bicycle B. Thus, the device D comprises two levers IOOa and lOOb arranged on either side of the plane of symmetry formed by the frame 200 of the bicycle B. On a first end I lOa and I lOb of these levers lOOa and lOOb wind mounted freely in rotation of the pedal-type control members I la and Illb allowing the user to bicycle B to operate said levers 100a and 100b. The second ends 120a and 120b of said levers 100a and 100b are respectively linked to an articulation forming a fulcrum to form a lever arm of which the latch 310a appears, these fulcrums being arranged on either side of the plane of vertical symmetry formed by the frame 200 of the bicycle B. These two articulations of which only 310a appear, each rotate according to the same

deuxieme axe de rotation reference A2. second axis of rotation reference A2.

Lesdits leviers lOOa et lOOb vent en outre chacun montes pivotant respectivement a l'extremite d'une premiere et d'une deuxieme manivelles dont senle 410a apparait, disposees sensiblement a 180 I'une de l'autre et tournant chacune selon un meme premier axe de rotation reference Al de facon a ce que I'action sur les pedales l l la et I l lb presentes a la premiere extremite desdits leviers lOOa et IOOb assure le pivotement alternatif desdits leviers dans un mouvement en balancier pour que ce mouvement prenant appui sur les articulations 310a entraAme en rotation lesdites premiere 410a et Said levers 100a and 100b each further mounted respectively to pivot at the end of a first and of a second cranks of which 410a appears, arranged substantially 180 from one another and each rotating along the same first axis. of rotation reference Al so that the action on the pedals ll la and I l lb present at the first end of said levers lOOa and IOOb ensures the alternating pivoting of said levers in a pendulum movement so that this movement resting on the joints 310a entAme in rotation said first 410a and

deuxieme manivelles.second cranks.

Selon ['invention, chaque manivelle est liee a un arbre de rotation separe et dispose de part et d'autre audit plan vertical et adoptant le meme axe de rotation Al Comme illustree, la bicyclette B sur laquelle est installe le dispositif D de ['invention comportant un dispositif de mise en mouvement de type pedalier classique avec deux pedales d'origine liees chacune a l'extremite de deux manivelles d'origine dont la deuxieme extremite est liee a un axe refirence A3 et un arbre de rotation d'origine solidaire d'un plateau 210 d'entranement 2s d'une chane d'origine C transmettant le mouvement de rotation a au moins une roue dentee liee d'origine a une roue de la bicyclette. Comme illustrd ce plateau 210 comporte plusieurs roues dentees qui viennent selectivement entramer selon la vitesse enclenchee par l'utilisateur un des pigeons 220 According to the invention, each crank is linked to a separate rotation shaft and has on either side of said vertical plane and adopting the same axis of rotation A1 As illustrated, the bicycle B on which is installed the device D of [' invention comprising a movement device of the classic crankset type with two original pedals each linked to the end of two original cranks, the second end of which is linked to a reference axis A3 and a rotation shaft of integral origin a plate 210 for driving 2s of an original chain C transmitting the rotational movement to at least one toothed wheel originally linked to a wheel of the bicycle. As illustrated, this plate 210 comprises several toothed wheels which selectively drive in according to the speed engaged by the user one of the pigeons 220

situes a l'arribre et solidaire de la roue arriere 230. located at the rear and secured to the rear wheel 230.

Selon une caracteristique particulierement avantageuse de ['invention, chaque arbre de rotation 413a mis en mouvement par lesdites manivelles 410a est lie a au moins un plateau qui, ici au According to a particularly advantageous characteristic of the invention, each rotation shaft 413a set in motion by said cranks 410a is linked to at least one plate which, here at

moyen d'une chame Ca, met en mouvement l'arbre de rotation d'une des roues dentees d'origine. by means of a Ca chain, sets in motion the rotation shaft of one of the original toothed wheels.

Bien que le mode de realisation prefere utilise une chaine pour ltentranement en rotation, d'autres solutions comme une courroie ou directement par contact vent possibles pour transmettre ledit Although the preferred embodiment uses a chain for rotary drive, other solutions such as a belt or directly by wind contact are possible for transmitting said

mouvement en rotation.rotating movement.

3s Selon le mode de realisation illustre, chaque arbre de rotation mis en mouvement par lesdites manivelles est solidaire d'un plateau dense qui entrane en mouvement au moyen d'une chame la roue s 2840873 dentee centrale d'origine 210 par 1'intermediaire de roues dentees auxiliaires SlOa et 510b disposees 3s According to the illustrated embodiment, each rotation shaft set in motion by said cranks is integral with a dense plate which drives in motion by means of a chain the original central toothed wheel 210 through the intermediary of SlOa and 510b auxiliary toothed wheels fitted

de part et d'autre du cadre 200 et du plateau 210. on either side of the frame 200 and the plate 210.

Conformement a ['invention, les axes de rotation A1 des manivelles et A2 des points d'appui vent paralleles aux axes de rotation des roues de ladite bicyclette B et a celui A3 du plateau central 210 In accordance with the invention, the axes of rotation A1 of the cranks and A2 of the wind support points parallel to the axes of rotation of the wheels of said bicycle B and to that of the central plate 210

S de cette derriere.S from behind.

La description des elements cinematiques mettant en couvre le mouvement du dispositif D de The description of the kinematic elements covering the movement of the device D of

['invention est decrit sur la base des figures de details. The invention is described on the basis of the detail figures.

Comme illustre sur les dessins des figures 3a et 3b, chaque levier ici lOOa est lie au niveau de sa deuxieme extremite 120a a un point d'appui 310a constitue chacun par une articulation reunissant une liaison glissiere et une liaison pivot autorisant la rotation de la liaison glissiere selon un meme deuxieme axe de rotation A2. Cette articulation 310a est selon une caracteristique particulierement avantageuse de ['invention constituee d'un fourreau de guidage lineaire 311a assurant le guidage des mouvements en translation de va-et-vient (illustres la double fleche) associe a un arbre de rotation d'axe perpendiculaire assurant la mobilite du fourreau de guidage 311a lors du mouvement en balancier du levier lOOa. Cet arbre de rotation 312a est fixe au cadre 200 au niveau d'une des branches de la fourche arriere de la bicyclette B. L'utilisation d'un fourreau de guidage lineaire monte pivotant pour la mise en auvre des points d'appui necessaires a la realisation des bras de levier permet d'assurer la stabilite du systeme, un enroulement plus facile et un taux d'utilisation plus important sans risque de cassure. L'axe de rotation A2 des points d'appui fournis par cette articulation est As illustrated in the drawings of FIGS. 3a and 3b, each lever here lOOa is linked at its second end 120a to a fulcrum 310a each constituted by an articulation joining a slide link and a pivot link authorizing the rotation of the link slide along the same second axis of rotation A2. This articulation 310a is according to a particularly advantageous characteristic of the invention consisting of a linear guide sleeve 311a ensuring the guiding of the movements in back-and-forth translation (illustrated with the double arrow) associated with an axis rotation shaft. perpendicular ensuring the mobility of the guide sleeve 311a during the pendulum movement of the lever 100a. This rotation shaft 312a is fixed to the frame 200 at one of the branches of the rear fork of the bicycle B. The use of a linear guide sleeve swivels for the implementation of the support points necessary for the realization of the lever arms ensures the stability of the system, easier winding and a higher utilization rate without risk of breakage. The axis of rotation A2 of the support points provided by this articulation is

eloigne au maximum des pedales 11 la et 11 lb afin d'assurer 1'effet de levier maximum. move as far away from 11 la and 11 lb pedals as possible to ensure maximum leverage.

Un axe de rotation susceptible d'etre utilise comme axe de rotation desdits points d'appui est celui de la roue arriere. Ainsi, selon le mode de realisation illustre en figure 2,1'axe de rotation A2 des An axis of rotation capable of being used as the axis of rotation of said support points is that of the rear wheel. Thus, according to the embodiment illustrated in FIG. 2, the axis of rotation A2 of the

points d'appui se confond avec l'axe de rotation de la roue arriere. support points merges with the axis of rotation of the rear wheel.

Conformement a ['invention, chaque point d'appui 310a est lie a un arbre de rotation separe et 2s dispose de part et d'autre audit plan vertical et adoptant deux a deux le m8me axe de rotation A2. Ici le fourreau 31 la ayant fonction de point d'appui tourne autour d'un arbre 312a fxe par rapport au cadre et coaxial a 1'axe de rotation A2. Le dispositif D reprenant la structure symetrique de la bicyclette B et dependent de la presence de la roue passant entre les deux branches de la fourche arriere du cadre de ladite bicyclette, la deuxieme articulation non illustree est egalement constituee d'un fourreau pivotant autour d'un arbre fLxe a l'autre branche de fourche arriere et coaxial au m8me axe de rotation A2. Comme illustre sur les dessins des figures 4a et 4b, chaque levier ici lOOa est lie entre ses deux extremites a une manivelle 410a qui est ici constituee par un plateau dense tournant autour d'un axe A1. Ce plateau 410a est selon une caracteristique particulierement avantageuse de 1'invention, monte sur roulement a billes 41 la equipe d'un graisseur 412a et fixe au cadre 200 au niveau de la fourche arriere de la bicyclette B entre le plateau central 210 et le point d'appui constituent ['articulation 31 Oa. Ce plateau dense 410a est eloigne au minimum du plateau 310a en ayant un axe de In accordance with the invention, each fulcrum 310a is linked to a separate rotation shaft and 2s has on either side of said vertical plane and adopting the same axis of rotation A2 in pairs. Here the sleeve 31 having the function of a fulcrum turns around a shaft 312a fixed relative to the frame and coaxial with the axis of rotation A2. The device D taking up the symmetrical structure of the bicycle B and dependent on the presence of the wheel passing between the two branches of the rear fork of the frame of the said bicycle, the second joint not shown is also constituted by a sheath pivoting around a shaft fixed to the other rear fork leg and coaxial to the same axis of rotation A2. As illustrated in the drawings of FIGS. 4a and 4b, each lever here 100a is linked between its two ends to a crank 410a which is here constituted by a dense plate rotating around an axis A1. This plate 410a is according to a particularly advantageous characteristic of the invention, mounted on ball bearing 41 fitted with a lubricator 412a and fixed to the frame 200 at the rear fork of the bicycle B between the central plate 210 and the point support constitute the articulation 31 Oa. This dense plateau 410a is moved at least away from the plateau 310a by having an axis of

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rotation parallele et situee dans le meme plan vertical toujours pour assurer un effet de levier maximal. Cette distance entre A1 et A2 est neanmoins suffisante pour assurer une bonne rotation, une bonne stabilite ainsi qu'un bon point d'appui. Pour autant, les axes A1 et A2 ne vent pas trop distants pour que le basculement alternatif des leviers lOOa et lOOb ne soit pas trop important en bout de course au niveau des pedales 111a et lllb notamment pour une bicyclette standard. De m8me, les distances vent calculees de facon a ce que l'utilisateur ait une amplitude de mouvements equivalente a parallel rotation and located in the same vertical plane always to ensure maximum leverage. This distance between A1 and A2 is nevertheless sufficient to ensure good rotation, good stability and a good fulcrum. However, the axes A1 and A2 are not too far apart so that the alternating tilting of the levers lOOa and lOOb is not too great at the end of travel at the level of the pedals 111a and lllb, in particular for a standard bicycle. Likewise, the wind distances calculated so that the user has an amplitude of movement equivalent to

celle necessaire a un pedalier classique. that needed for a classic crankset.

Conformement a ['invention, le point d'appui 310a et le plateau 410a respectivement lies a l'extremite et a la partie centrale d'un m8me levier lOOa vent orientes angulairement l'un par rapport a In accordance with the invention, the fulcrum 310a and the plate 410a respectively connected to the end and to the central part of the same lever 100a wind angularly oriented one with respect to

1'autre afin d'assurer un point d'appui continu au mouvement de balancier desdits leviers. The other in order to provide a continuous fulcrum for the pendulum movement of said levers.

Conformement a ['invention, chaque manivelle est liee a un arbre de rotation separe et dispose de part et d'autre audit plan vertical et adoptant deux a deux le m8me axe de rotation. Ici, le plateau 410a ayant fonction de manivelle tourne autour d'un arbre 413a fixe par rapport au cadre 200 et coaxial a l'axe de rotation A1. Le dispositif D reprenant la structure symetrique de la bicyclette B et dependent de la presence de la roue passant entre les deux branches de la fourche arriere du cadre 200 de ladite bicyclette, la deuxieme manivelle non illustree est egalement constituee d'un plateau dense tournant autour d'un arbre fixe a l'autre branche de fourche arriere et coaxial au m8me premier axe de In accordance with the invention, each crank is linked to a separate rotation shaft and has on either side of said vertical plane and adopting the same axis of rotation in pairs. Here, the plate 410a having the crank function rotates around a shaft 413a fixed relative to the frame 200 and coaxial with the axis of rotation A1. The device D taking up the symmetrical structure of the bicycle B and depending on the presence of the wheel passing between the two branches of the rear fork of the frame 200 of the said bicycle, the second crank not illustrated is also constituted by a dense plate rotating around from a fixed shaft to the other rear fork branch and coaxial to the same first axis of

rotation Al.Al rotation.

Comme illustre ce plateau 410a est dense et entrame en mouvement une cha'^ne auxiliaire Ca As illustrated, this plate 410a is dense and starts in motion an auxiliary chain Ca

independante de la chaine d'origine C reliant le plateau central 210 aux pigeons arrieres 220. independent of the original chain C connecting the central plate 210 to the rear pigeons 220.

Comme illustre sur les dessins des figures 5a et Sb, l'arbre de rotation audit plateau central d'origine 210 tournant autour de 1'axe A3, est muni de part et d'autre audit plan vertical de roues dentees 510a et 510b mises en mouvement par le mouvement imprime aux plateaux dont seul 410a est illustre correspondent respectivement aux premiere 410a et deuxieme manivelles disposees de part et d'autre audit plan vertical. Ces roues dentees ou plateaux auxiliaires 510a et 510b vent mis en mouvement au moyen de chanes auxiliaires Ca et Cb. Ainsi, ces deux chaines transmettent le mouvement de rotation imprime de part et d'autre du cadre aux premiere et deuxieme manivelles par le mouvement des leviers lOOa et lOOb pivotant au niveau non seulement de leur deuxieme extremite 120a et 120b mais egalement au niveau de leur partie centrale adoptant ainsi la fonction de bielles qui, soumises a la pression des pieds de 1'utilisateur selon un mouvement alternatif transmettent cette pression au moyen des points d'appui de facon a transformer de mouvement alternatif en mouvement de rotation au As illustrated in the drawings of FIGS. 5a and Sb, the rotation shaft at said original central plate 210 rotating around the axis A3, is provided on either side with said vertical plane with toothed wheels 510a and 510b placed movement by the movement printed on the plates of which only 410a is illustrated respectively correspond to the first 410a and second cranks arranged on either side of said vertical plane. These toothed wheels or auxiliary plates 510a and 510b are set in motion by means of auxiliary chains Ca and Cb. Thus, these two chains transmit the rotational movement printed on either side of the frame to the first and second cranks by the movement of the levers lOOa and lOOb pivoting at the level not only of their second end 120a and 120b but also at their central part thus adopting the function of connecting rods which, subjected to the pressure of the feet of the user in a reciprocating movement transmit this pressure by means of the support points so as to transform from reciprocating movement into rotational movement at

niveau des manivelles.level of the cranks.

Selon le mode de realisation non litnitatif illustre, la distance entre Al et A2 et celle entre A2 et A3 respecte un rapport de I a 4 pour assurer un effet de levier de rapport 3 permettant 1'economie de force depensee correspondante. De m8me, les plateaux auxiliaires 510a et 510b comptent 2.5 fois According to the illustrated non-litnitative embodiment, the distance between Al and A2 and that between A2 and A3 respects a ratio of I to 4 to ensure a leverage of ratio 3 allowing the saving of corresponding force of expenditure. Likewise, the auxiliary plates 510a and 510b count 2.5 times

moins de dents que les plateaux dentes 410a correspondent aux premiere et deuxieme manivelles. fewer teeth than the chainrings 410a correspond to the first and second cranks.

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Cette configuration est comme decrite plus haut particulierement avantageuse en ce qu'elle permet de beneficier du systeme de vitesse d'un pedalier classique sans en avoir les inconvenients. En This configuration is as described above particularly advantageous in that it allows to benefit from the speed system of a conventional crankset without having the disadvantages. In

effet, la cha^ne d'origine C est independante des deux chames auxiliaires Ca et Cb. Indeed, the original chain C is independent of the two auxiliary chains Ca and Cb.

s On comprend que le dispositif de mise en mouvement d'un vehicule qui vient d'etre ci-dessus decrit et represente, ne l'a ete qut en vue de la divulgation d' un mode de realisation plutot que d'une limitation. Bien entendu, divers amenagements, modifications et ameliorations pourront etre apportes a l'exemple c i -dessus, san s pour autant sortir du cadre de [' invention tel le que defi n ie par les s It is understood that the device for setting in motion a vehicle which has just been described and shown above, was only for the purpose of disclosing an embodiment rather than a limitation. Of course, various modifications, modifications and improvements could be made to the example above, without departing from the scope of the invention as defined by

revendications.claims.

Ainsi, bien que ['application a une bicyclette soit particulierement adaptee, le dispositif est egalement susceptible d'etre installe pour tout type de vehicule mu par la force musculaire ou meme Thus, although the application to a bicycle is particularly suitable, the device is also capable of being installed for any type of vehicle driven by muscular force or even

motorise en jouant sur les distances et sur les differents rapports de couple entrant en jou. motorized by playing on the distances and on the different torque ratios coming into play.

Afin de permettre une me i l leure comprehension des des s ins, une l iste des references avec leurs In order to allow a better understanding of the ins, a list of references with their

legendes est ci-apres enumree.legends is listed below.

100a, 100b leviers a, 110b premiere extremite des leviers l l la, I l lb, pedales a, 120b deuxieme extremite des leviers cadre de la bicyclette 210 plateau central 220 pigeons arrieres 310a premiere articulation 31 la fourreau de guidage lineaire 312a arbrede rotation 2s 410a manivelle I plateau 411a roulement a billes 412a graisseur 413a arbre de rotation 510a, 510a roues dentees auxiliaires A 1 premier axe de rotation A2 deuxieme axe de rotation A3 axe de rotation du plateau central B bicyclette C chame principale Ca, Cb chanes auxiliaires 100a, 100b levers a, 110b first extremity of the levers ll la, I l lb, pedals a, 120b second extremity of the levers bicycle frame 210 central plate 220 rear pigeons 310a first articulation 31 the linear guide sleeve 312a shaft rotation 2s 410a crank I plate 411a ball bearing 412a grease nipple 413a rotation shaft 510a, 510a auxiliary toothed wheels A 1 first axis of rotation A2 second axis of rotation A3 axis of rotation of the central plate B bicycle C main chain Ca, Cb auxiliary chains

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Claims

1. Device (D) for setting in motion a vehicle (B) moved by muscular force, CHARACTERIZED BY THE FACT THAT it is made up of two levers (lOOa and lOOb) which, each having a first end (l lOa and l lOb) a pedal-type control member (11a and 11lb) freely mounted in rotation, have over the rest of their length a fulcrum (310a) and a rotation shaft which defines on each lever ( lOOa and b) a first and a second cranks (410a) arranged, with a lever relative to the other, 180 from one another and each turning according to the same first axis of rotation (A1) both being levers (lOOa and lOOb), arranged relative to their fulcrum (310a), their shaft of rotation and one relative to the other so that the action on the pedals (11 la and 11 lb) present at their first end (l laa and l lb) ensures the alternating pivoting of said levers (lOOa and lOOb) in a pendulum movement to

rotating said cranks (410a).

2. Device (D) according to claim 1, CHARACTERIZED BY THE FACT THAT the points of support (310a) of check lever (lOOa and lOOb) wind each constituted by an articulation joining a slide link and a pivot link allowing the rotation of the link

slide along the same second axis of rotation (A2).

3. Device (D) according to claim 1 installed on a bicycle (B) of the type of which the frame (200) forms a vertical plane of symmetry and comprising a movement system of classic pedal type with two pedals origin each linked to the first end of two original cranks, the second end of which is linked to an original rotation shaft secured to an original central toothed wheel (210) driving an original chain (C) transmitting the rotational movement to at least one original toothed wheel (220) linked to a wheel (230) of the bicycle (B), CHARACTERIZED BY THE FACT THAT the pads of elements constituting the device (D) wind arranged on either side of the vertical plane formed by the frame (200) of the bicycle (B).

4. Device (D) according to claim 3, CHARACTERIZED BY THE FACT THAT each crank (410a) is connected to a rotation shaft (413a) separate, has on both sides

to said vertical plane and adopting the same axis of rotation (A1).

5. Device (D) according to claim 4, CHARACTERIZED BY THE FACT THAT each rotation shaft (413a) set in motion by said cranks (410a) is linked to at least one plate which sets in motion the rotation shaft of one of the original 3s toothed wheels.

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6. Device (D) according to claims 2 and 3, CHARACTERIZED BY THE FACT THAT

each fulcrum (310a) is linked to a separate rotation shaft and has both

on the other said vertical plane and adopting the same axis of rotation (A2).

7. Device se1On claim 4, CHARACTERIZED BY THE FACT THAT the shaft of rotation of the original central toothed wheel (210) is provided on either side of said vertical plane with toothed wheels (510a and 510b) movement by movement printed on the plates linked respectively to the first and second cranks (410a) arranged

on either side of said vertical plane.

8. Device (D) according to claim 3, CHARACTERIZED BY THE FACT THAT the axes of rotation (Al and A2) of said cranks (410a) and support points (3 lOa) wind parallel

to the axes of rotation of the wheels of said bicycle (B).