EP1723031A1 - Cycle-type vehicle - Google Patents

Cycle-type vehicle

Info

Publication number
EP1723031A1
EP1723031A1 EP04711973A EP04711973A EP1723031A1 EP 1723031 A1 EP1723031 A1 EP 1723031A1 EP 04711973 A EP04711973 A EP 04711973A EP 04711973 A EP04711973 A EP 04711973A EP 1723031 A1 EP1723031 A1 EP 1723031A1
Authority
EP
European Patent Office
Prior art keywords
winding
levers
vehicle according
link
shaft
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Withdrawn
Application number
EP04711973A
Other languages
German (de)
French (fr)
Inventor
Ciro Esposito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1723031A1 publication Critical patent/EP1723031A1/en
Withdrawn legal-status Critical Current

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
    • B62M1/10—Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels
    • B62M1/105—Rider propulsion of wheeled vehicles involving devices which enable the mechanical storing and releasing of energy occasionally, e.g. arrangement of flywheels using elastic elements

Definitions

  • the present invention relates to cycle type wheeled vehicles. It aims to facilitate the use of such vehicles, in particular bicycles or tricycles, to regular users, and to widen the circle of potential users by creating a vehicle that is more accessible than at present to people who are muscularly weakened or disabled, to the elderly, etc. It also aims to provide a vehicle allowing performance greater than that of bikes or tricycles known until now.
  • Vehicles of the bicycle or tricycle type generally have a rotary drive member constituted by a crankset and the energy transmission means are a chain transmission going from the crankset to the hub of the driving wheel or wheels. Very often, this transmission is equipped with a gear change which can be internal to the hub or external and then take the form of a derailleur.
  • This peculiarity of these known systems is that the energy necessary to move the vehicle at the desired speed must be provided instantaneously and with the necessary intensity at all times by the muscular force of the driver, unless the vehicle is moving in freewheel, which previously required the development of a force greater than that which was necessary to move the vehicle.
  • the present invention relates to a wheeled vehicle of the cycle type, comprising a drive member actuated in rotation about an axis and means for transmitting energy from said rotary member to at least one drive wheel, these means comprising a system for accumulating a reserve of energy with at least one elastic member, a winding connection between the drive member and the storage system, allowing the winding up of the elastic member (s) and a propulsion link between the energy storage system and the driving wheel or wheels, said winding link comprising a camshaft coupled to the rotary drive member, on this shaft a cam for each of said elastic members of the accumulation system, and a link with oscillating levers between each cam and the corresponding elastic member.
  • the energy storage system comprises a plurality of elastic members.
  • the link with oscillating levers can comprise two levers pivoting around parallel axes, including a rocking lever provided at one end with a feeler in contact with the corresponding cam, and a winding lever linked by one end. to the corresponding elastic member, the two levers of each link being able to be connected to each other so that any pivoting of the rocking lever causes a pivoting of an increased angle of the corresponding winding lever.
  • the vehicle may comprise a common motor shaft forming part of said propulsion link, on which all the winding levers are mounted, each by means of a bearing with unidirectional coupling, this pivoting freely on the shaft when the lever armament is actuated in the direction of the arming of the corresponding elastic member, but coupling with said motor shaft when the lever is pivotally driven by the rebound of the elastic member.
  • the vehicle may further comprise a return connection, chain, belt or gear between the propulsion link and the rotary drive member, said return connection being able to connect the secondary drive shaft to the camshaft.
  • - fig. 1 is a side elevation view of a first embodiment given by way of example,
  • FIG. 1 is a simplified top plan view of the vehicle of FIG. 1
  • FIG. 1 is an elevational view from the rear of the vehicle of FIG. 1
  • FIG. 4 and 5 are simplified side elevation views showing the energy storage system and the arming link in two arming positions
  • - figs. 6 and 7 are top plan views of the camshaft in the respective positions of Figs. 4 and 5,
  • - fig. 8 is an elevational view similar to FIGS. 4 and 5 showing the return connection in the variant shown in the example
  • - fig. 9 is a simplified partial plan view from above, comparable to FIG. 2, of a second embodiment
  • FIGS. 4 and 5 are partial elevation views, comparable to FIGS. 4 and 5, of the second embodiment.
  • the accumulation system 3 consists, in the embodiment described, of a series of eight coil springs 7 (fig. 3) fixed by their upper end to a horizontal retaining bar 8 rigidly fixed to the vehicle frame . It will be noted that the height of this bar relative to the frame could be adjustable to allow the springs 7 to be prearranged.
  • each spring 7 presses on the rear end of a winding lever 9.
  • the winding levers 9 form part of the winding link generally designated by 2, but they also form part as as will be seen below from the propulsion link designated by 4. They are pivotally mounted on the axis of a drive shaft 10 and have at their front end a toothed sector 11 which is engaged, as seen in FIGS. 2, 4 and 5, with a homologous toothed sector 12 situated at the rear end of a rocking lever 13 pivoting on a rocking axis 1.
  • the reinforcement link 2 comprises a bundle of eight rocker levers (fig. 2) rectilinear and parallel, each provided at its front end with a feeler 15 cooperating with one of the eight similar cams 16 rigidly mounted on the camshaft 17 (figs. 4 and 5).
  • this winding connection is completed by a pulley and belt drive 18, possibly replaced by a chain and toothed wheel system, transmitting to the camshaft 17 the rotary impulse imparted to the winding connection by the pedal 1 and pair of pedals 20.
  • cams 16 are all of the same shape and same size. Their half-moon outline is drawn so as to command a progressive winding of the springs 7. They are fixed on the shaft 17 each in the vicinity of one end of the diameter of the half-moon. When the shaft 17 rotates clockwise, each cam raises the rocking lever which it controls to the top of its convex outline, then when the straight portion of its outline is opposite the probe 15, the rocker is returned to its original position. As seen in Figs. 4 and 5, the eight cams 16 are angularly offset by 45 degrees relative to each other. Figs.
  • FIGS. 6 and 7 show in top plan the positions of the cams 16 and of the camshaft 17 corresponding to the two positions of the winding connection of FIGS. 4 and 5. Between these two positions, the shaft 17 has turned clockwise by% of a turn.
  • the rocking lever 13 has pivoted anti-clockwise around the axis 14, which has caused a corresponding pivoting in the clockwise direction of the winding lever 9, thus compressing the spring 7.
  • the elements of the propulsion link are visible in Figs. 1 to 3.
  • the motor shaft 10 drives the plate of a planetary gear 21 whose two satellites, mounted on axes 22 fixed to the upright 23 of the frame, drive a central pinion (not visible in fig. 3), wedged on a secondary motor shaft 24.
  • a chain or belt link 25 transmits the rotation of the shaft 24 to an intermediate shaft 26 itself connected by a speed change system 27 to the drive shaft 6.
  • the change speed 27 is shown in fig. 3 as a system of pulleys with complementary stages and transmission belt but it is obvious that it could also be of any known type.
  • crankset could be replaced by a hand-operated system, for example with a swinging arm about a vertical axis or by a motor acting on the axis 17.
  • the crankset or the hand-operated system can also be combined with a booster motor acting on the axis 17.
  • the elastic members 7 could be designed differently from the coil springs described: for example, as pneumatic cylinders or as spiral springs. Their number is obviously not limited to 8 and it is not necessary that they are all identical.
  • winding link and the propulsion link actuate the springs at the same end, they could just as well actuate them at their two ends, as in the case of goes with the mainspring of a clockwork movement.
  • Fig. 8 also shows an addition which it is possible to provide on the vehicle described.
  • pulleys 28 and 29 are provided as well as a belt 30, so that a torque transmission occurs between the camshaft 17 and the secondary drive shaft 24.
  • This auxiliary device further contributes to the equalization of the driving torques exerted by the driver on the crankset with the resisting torque which road conditions, the weight of the vehicle and its inertia oppose to displacement.
  • Fig. 1 also suggests what the design of a tricycle constructed according to the present invention may be, but it is quite obvious that the knowledge of a person skilled in the art and the art of the designer may be involved in order to vary in a very wide range of possibilities. layout, style and details of vehicles intended for industrial manufacturing, whether in large series or in specialized applications.
  • Figs. 9, 10 and 11 which are described below relate to a second embodiment of the vehicle which has certain advantages over that described so far.
  • crankset 1 the winding link 2
  • the energy storage system 3 the energy storage system 3
  • propulsion link 4 are recognizable in FIGS. 9 to 11, as well as the drive shaft 6 and the rear drive wheels 5.
  • the driver drives, by a chain 31, a pinion 40 of the same diameter as the crankset, wedged directly in the center of the camshaft 17.
  • the latter carries, as in the first embodiment, eight cams 16 distributed over its length, oriented at 45 degrees relative to each other, but whose shapes are entirely different from what FIGS. 4 and 5.
  • the cams have the shape of diametrical fingers with curved profiles, these profiles being shown in FIGS. 10 and 11.
  • Each cam cooperates with a roller 32 which is part of the winding link 2 and moves, as a function of the rotation of the cam, a winding lever 33 and one of the springs 7 serving to accumulate the energy reserve.
  • Each roller 32 is connected by a pin 34 to a stirrup 35 which maintains it between its cheeks and carries, on its upper face, the lower end of one of the springs 7, these being moreover supported at their upper end by bar 8 (not shown in figs. 9 to 11).
  • the levers 33 comprise, seen in plan, two parallel branches which engage on either side of the corresponding roller 32 and pivot on its axis 34.
  • the connection between the winding system 2 and the drive system 4 is produced in a similar manner to that which has been described for the first embodiment, but simplified, by bearings 41 with unidirectional coupling, each of which is secured by its raceway outside of the rear part of one of the levers 33.
  • These unidirectional couplings 41 are mounted on a common drive shaft 36 which therefore ensures the pivoting of the levers 33. It carries a central pinion 37 which is connected by a chain 39 to a drive pinion 38 fixed on the shaft 6 driving the drive wheels 5.
  • FIGS. 10 and 11 show the two extreme operating positions of a winding lever 33 and of the cam 16.
  • crankset or the hand-operated system can be combined with a motor acting on the axis 17 or replaced by such a motor.
  • the drive system described here also allows the driver to adjust his effort as he wishes. It can be provided with a device for changing the transmission ratios as in the first embodiment.
  • the main simplification obtained comes from the fact that the two winding and rocking levers have been replaced by a single winding lever 33 taking up the functions of the two preceding levers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The invention relates to a cycle-type vehicle. According to the invention, the user actuates the crankset (1) using the pedals (20). The cams (16), which are distributed along the camshaft (17), cause the tipping levers (13) and the tensioning levers (9) to oscillate, thereby bringing the springs (7) successively to the maximum tensioning positions thereof. During the return movement, the bearings (11), which are solidly connected to the winding levers (9), move the common drive shaft (10), thereby turning the wheels (5) which are connected to the shaft (10) by means of a planetary gear, a secondary drive shaft and a chain or pulley transmission system with a gearshift mechanism.

Description

Véhicule du type cycle Cycle type vehicle
La présente invention concerne les véhicules à roues du type cycle. Elle vise à faciliter l'utilisation de tels véhicules, notamment vélos ou tricycles, aux utilisateurs habituels, et à élargir le cercle des utilisateurs potentiels en créant un véhicule mieux accessible qu'actuellement à des personnes musculairement affaiblies ou handicapées, à des personnes âgées, etc. Elle vise également à fournir un véhicule permettant des performances supérieures à celles des vélos ou tricycles connus jusqu'à maintenant.The present invention relates to cycle type wheeled vehicles. It aims to facilitate the use of such vehicles, in particular bicycles or tricycles, to regular users, and to widen the circle of potential users by creating a vehicle that is more accessible than at present to people who are muscularly weakened or disabled, to the elderly, etc. It also aims to provide a vehicle allowing performance greater than that of bikes or tricycles known until now.
Les véhicules du genre vélo ou tricycle possèdent en général un organe d'entraînement rotatif constitué par un pédalier et les moyens de transmission de l'énergie sont une transmission à chaîne allant du pédalier au moyeu de la ou des roues motrices. Très souvent, cette transmission est équipée d'un changement de vitesse qui peut être interne au moyeu ou extérieur et prendre alors la forme d'un dérailleur. La particularité de ces systèmes connus est que l'énergie nécessaire pour assurer le déplacement du véhicule à la vitesse désirée doit être fournie instantanément et avec l'intensité nécessaire à chaque instant par la force musculaire du conducteur, à moins que le véhicule se déplace en roue libre, ce qui a alors nécessité antérieurement le développement d'une force supérieure à celle qui était nécessaire au déplacement du véhicule.Vehicles of the bicycle or tricycle type generally have a rotary drive member constituted by a crankset and the energy transmission means are a chain transmission going from the crankset to the hub of the driving wheel or wheels. Very often, this transmission is equipped with a gear change which can be internal to the hub or external and then take the form of a derailleur. The peculiarity of these known systems is that the energy necessary to move the vehicle at the desired speed must be provided instantaneously and with the necessary intensity at all times by the muscular force of the driver, unless the vehicle is moving in freewheel, which previously required the development of a force greater than that which was necessary to move the vehicle.
Par conséquent, un des buts de la présente invention est de permettre au conducteur du véhicule d'égaliser le développement de sa force musculaire. Pour cela, on intercale un accumulateur d'énergie entre l'organe d'entraînement et la ou les roues motrices afin de rendre l'effort de propulsion aussi constant que possible. A cet effet, la présente invention concerne un véhicule à roues du type cycle, comprenant un organe d'entraînement actionné en rotation autour d'un axe et des moyens de transmission d'énergie dudit organe rotatif à au moins une roue motrice, ces moyens comportant un système d'accumulation d'une réserve d'énergie avec au moins un organe élastique, une liaison d'armage entre l'organe d'entraînement et le système d'accumulation, permettant l'armage du ou des organes élastiques et une liaison de propulsion entre le système d'accumulation d'énergie et la ou les roues motrices, ladite liaison d'armage comportant un arbre à cames accouplé à l'organe rotatif d'entraînement, sur cet arbre une came pour chacun desdits organes élastiques du système d'accumulation, et une liaison à leviers oscillants entre chaque came et l'organe élastique correspondant.Therefore, one of the aims of the present invention is to allow the driver of the vehicle to equalize the development of his muscular strength. For this, an energy accumulator is interposed between the drive member and the drive wheel or wheels in order to make the propulsion effort as constant as possible. To this end, the present invention relates to a wheeled vehicle of the cycle type, comprising a drive member actuated in rotation about an axis and means for transmitting energy from said rotary member to at least one drive wheel, these means comprising a system for accumulating a reserve of energy with at least one elastic member, a winding connection between the drive member and the storage system, allowing the winding up of the elastic member (s) and a propulsion link between the energy storage system and the driving wheel or wheels, said winding link comprising a camshaft coupled to the rotary drive member, on this shaft a cam for each of said elastic members of the accumulation system, and a link with oscillating levers between each cam and the corresponding elastic member.
De préférence, le système d'accumulation d'énergie comporte une pluralité d'organes élastiques.Preferably, the energy storage system comprises a plurality of elastic members.
Pour chaque organe élastique la liaison à leviers oscillants peut comporter deux leviers pivotant autour d'axes parallèles, dont un levier à bascule muni à une extrémité d'un palpeur en contact avec la came correspondante, et un levier d'armage lié par une extrémité à l'organe élastique correspondant, les deux leviers de chaque liaison pouvant être reliés l'un à l'autre de manière que tout pivotement du levier à bascule entraîne un pivotement d'un angle augmenté du levier d ' armage correspondant .For each elastic member, the link with oscillating levers can comprise two levers pivoting around parallel axes, including a rocking lever provided at one end with a feeler in contact with the corresponding cam, and a winding lever linked by one end. to the corresponding elastic member, the two levers of each link being able to be connected to each other so that any pivoting of the rocking lever causes a pivoting of an increased angle of the corresponding winding lever.
Le véhicule peut comporter un arbre moteur commun faisant partie de ladite liaison de propulsion, sur lequel tous les leviers d'armage sont montés, chacun au moyen d'un palier à accouplement unidirectionnel, celui-ci pivotant librement sur l'arbre quand le levier d'armage est actionné dans le sens de l'armage de l'organe élastique correspondant, mais s 'accouplant audit arbre moteur quand le levier est entraîné en pivotement par la détente de l'organe élastique.The vehicle may comprise a common motor shaft forming part of said propulsion link, on which all the winding levers are mounted, each by means of a bearing with unidirectional coupling, this pivoting freely on the shaft when the lever armament is actuated in the direction of the arming of the corresponding elastic member, but coupling with said motor shaft when the lever is pivotally driven by the rebound of the elastic member.
Le véhicule peut comporter en outre une connexion de retour, à chaîne, courroie ou engrenage entre la liaison de propulsion et l'organe d'entraînement rotatif, ladite connexion de retour pouvant relier l'arbre moteur secondaire à 1 ' arbre à cames .The vehicle may further comprise a return connection, chain, belt or gear between the propulsion link and the rotary drive member, said return connection being able to connect the secondary drive shaft to the camshaft.
On décrit, ci-après, à titre d'exemple, une forme d'exécution et une variante principale de l'objet de l'invention, tout en mentionnant différentes variations possibles dans l'exécution des parties essentielles.An embodiment and a main variant of the subject of the invention are described below by way of example, while mentioning different possible variations in the execution of the essential parts.
Au dessin annexé :In the attached drawing:
- la fig. 1 est une vue en élévation latérale d'une première forme d'exécution donnée à titre d'exemple,- fig. 1 is a side elevation view of a first embodiment given by way of example,
- la fig. 2 est une vue en plan de dessus simplifiée du véhicule de la fig. 1,- fig. 2 is a simplified top plan view of the vehicle of FIG. 1
- la fig. 3 en est une vue en élévation depuis l'arrière du véhicule de la fig. 1,- fig. 3 is an elevational view from the rear of the vehicle of FIG. 1
- les fig. 4 et 5 sont des vues en élévation latérale simplifiées montrant le système d'accumulation d'énergie et la liaison d'armage dans deux positions d'armage,- figs. 4 and 5 are simplified side elevation views showing the energy storage system and the arming link in two arming positions,
- les fig. 6 et 7 sont des vues en plan de dessus de l'arbre à cames dans les positions respectives des fig. 4 et 5,- figs. 6 and 7 are top plan views of the camshaft in the respective positions of Figs. 4 and 5,
- la fig. 8 est une vue en élévation analogue aux fig. 4 et 5 montrant la connexion de retour dans la variante d'exécution montrée en exemple, - la fig. 9 est une vue partielle en plan de dessus simplifiée, comparable à la fig. 2, d'une seconde forme d'exécution, et- fig. 8 is an elevational view similar to FIGS. 4 and 5 showing the return connection in the variant shown in the example, - fig. 9 is a simplified partial plan view from above, comparable to FIG. 2, of a second embodiment, and
- les fig. 10 et 11 sont des vues partielles en élévation, comparables aux fig. 4 et 5, de la seconde forme d'exécution.- figs. 10 and 11 are partial elevation views, comparable to FIGS. 4 and 5, of the second embodiment.
Il résulte des fig. 1 et 2 que le véhicule décrit est un tricycle avec un pédalier 1, une liaison d'armage 2, un système d'accumulation d'une réserve d'énergie 3 et une liaison de propulsion 4 assurant l'entraînement de deux roues arrière 5 fixées sur un arbre d'entraînement 6.It follows from fig. 1 and 2 that the vehicle described is a tricycle with a crankset 1, a winding link 2, a system for accumulating an energy reserve 3 and a propulsion link 4 ensuring the driving of two rear wheels 5 fixed on a drive shaft 6.
Le système d'accumulation 3 se compose, dans la forme d'exécution décrite, d'une série de huit ressorts à boudin 7 (fig. 3) fixés par leur extrémité supérieure à une barre de retenue horizontale 8 rigidement fixée au bâti du véhicule. On notera que la hauteur de cette barre par rapport au bâti pourrait être réglable pour permettre de donner aux ressorts 7 un préarmage voulu.The accumulation system 3 consists, in the embodiment described, of a series of eight coil springs 7 (fig. 3) fixed by their upper end to a horizontal retaining bar 8 rigidly fixed to the vehicle frame . It will be noted that the height of this bar relative to the frame could be adjustable to allow the springs 7 to be prearranged.
A son extrémité inférieure, chaque ressort 7 appuie sur l'extrémité arrière d'un levier d'armage 9. Les leviers d'armage 9 font partie de la liaison d'armage désignée de façon générale par 2, mais ils font également partie comme on le verra plus loin de la liaison de propulsion désignée par 4. Ils sont montés pivotant sur l'axe d'un arbre moteur 10 et présentent à leur extrémité avant un secteur denté 11 qui est en prise, comme on le voit aux fig. 2, 4 et 5, avec un secteur denté 12 homologue situé à l'extrémité arrière d'un levier à bascule 13 pivotant sur un axe de bascule 1 .At its lower end, each spring 7 presses on the rear end of a winding lever 9. The winding levers 9 form part of the winding link generally designated by 2, but they also form part as as will be seen below from the propulsion link designated by 4. They are pivotally mounted on the axis of a drive shaft 10 and have at their front end a toothed sector 11 which is engaged, as seen in FIGS. 2, 4 and 5, with a homologous toothed sector 12 situated at the rear end of a rocking lever 13 pivoting on a rocking axis 1.
Ainsi, la liaison d'armage 2 comporte un faisceau de huit leviers à bascule (fig. 2) rectilignes et parallèles, pourvus chacun à son extrémité avant d'un palpeur 15 coopérant avec l'une des huit cames semblables 16 rigidement montées sur l'arbre à cames 17 (fig. 4 et 5) . Enfin, cette liaison d'armage est complétée par un entraînement à poulie et courroie 18, remplacé éventuellement par un système à chaîne et roue dentée, transmettant à l'arbre à cames 17 l'impulsion rotative imprimée à la liaison d'armage par le pédalier 1 et la paire de pédales 20.Thus, the reinforcement link 2 comprises a bundle of eight rocker levers (fig. 2) rectilinear and parallel, each provided at its front end with a feeler 15 cooperating with one of the eight similar cams 16 rigidly mounted on the camshaft 17 (figs. 4 and 5). Finally, this winding connection is completed by a pulley and belt drive 18, possibly replaced by a chain and toothed wheel system, transmitting to the camshaft 17 the rotary impulse imparted to the winding connection by the pedal 1 and pair of pedals 20.
Le fonctionnement du système se comprendra quand on aura décrit les détails de la liaison de propulsion 4, mais auparavant, il convient de noter que les cames 16 sont toutes de même forme et même dimension. Leur contour, en demi-lune, est tracé de manière à commander un armage progressif des ressorts 7. Elles sont fixées sur l'arbre 17 chacune au voisinage d'une extrémité du diamètre de la demi-lune. Lorsque l'arbre 17 tourne dans le sens horaire, chaque came soulève le levier à bascule qu'elle commande jusqu'au sommet de son contour convexe, puis quand la portion rectiligne de son contour se trouve en regard du palpeur 15, la bascule est ramenée dans sa position initiale. Comme on le voit aux fig. 4 et 5, les huit cames 16 sont décalées angulairement de 45 degrés l'une par rapport à l'autre. Les fig. 6 et 7 montrent en plan de dessus les positions des cames 16 et de l'arbre à cames 17 correspondant aux deux positions de la liaison d'armage des fig. 4 et 5. Entre ces deux positions, l'arbre 17 a tourné dans le sens horaire de % de tour. Le levier à bascule 13 a pivoté dans le sens anti-horaire autour de l'axe 14 , ce qui a entraîné un pivotement correspondant dans le sens horaire du levier d'armage 9, comprimant ainsi le ressort 7.The operation of the system will be understood when the details of the propulsion link 4 have been described, but beforehand, it should be noted that the cams 16 are all of the same shape and same size. Their half-moon outline is drawn so as to command a progressive winding of the springs 7. They are fixed on the shaft 17 each in the vicinity of one end of the diameter of the half-moon. When the shaft 17 rotates clockwise, each cam raises the rocking lever which it controls to the top of its convex outline, then when the straight portion of its outline is opposite the probe 15, the rocker is returned to its original position. As seen in Figs. 4 and 5, the eight cams 16 are angularly offset by 45 degrees relative to each other. Figs. 6 and 7 show in top plan the positions of the cams 16 and of the camshaft 17 corresponding to the two positions of the winding connection of FIGS. 4 and 5. Between these two positions, the shaft 17 has turned clockwise by% of a turn. The rocking lever 13 has pivoted anti-clockwise around the axis 14, which has caused a corresponding pivoting in the clockwise direction of the winding lever 9, thus compressing the spring 7.
Comme on l'a indiqué plus haut, tous les leviers d'armage 9 pivotent sur l'arbre moteur commun 10. Chacun de ces leviers est monté sur un palier à roulement 11 qui est relié à l'arbre moteur 10 par un dispositif anti-retour. Ainsi, quand le levier 9 a atteint la position supérieure représentée à la fig. 5, la force du ressort 7 lui imprime un mouvement de rotation dans le sens anti-horaire et son palier à roulement est alors accouplé à l'arbre moteur 10.As indicated above, all the winding levers 9 pivot on the common motor shaft 10. Each of these levers is mounted on a rolling bearing 11 which is connected to the motor shaft 10 by an anti -return. Thus, when the lever 9 has reached the upper position shown in the Fig. 5, the force of the spring 7 gives it a rotation movement in the counterclockwise direction and its rolling bearing is then coupled to the motor shaft 10.
Les éléments de la liaison de propulsion sont visibles aux fig. 1 à 3. L'arbre moteur 10 entraîne le plateau d'un engrenage planétaire 21 dont les deux satellites, montés sur des axes 22 fixés au montant 23 du bâti, entraînent un pignon central (non visible à la fig. 3) , calé sur un arbre moteur secondaire 24. Une liaison à chaîne ou courroie 25 transmet la rotation de l'arbre 24 à un arbre intermédiaire 26 relié lui- même par un système de changement de vitesse 27 à l'arbre d'entraînement 6. Le changement de vitesse 27 est représenté à la fig. 3 comme un système de poulies à étages complémentaires et courroie de transmission mais il est bien évident qu' il pourrait aussi être de n'importe quel type connu.The elements of the propulsion link are visible in Figs. 1 to 3. The motor shaft 10 drives the plate of a planetary gear 21 whose two satellites, mounted on axes 22 fixed to the upright 23 of the frame, drive a central pinion (not visible in fig. 3), wedged on a secondary motor shaft 24. A chain or belt link 25 transmits the rotation of the shaft 24 to an intermediate shaft 26 itself connected by a speed change system 27 to the drive shaft 6. The change speed 27 is shown in fig. 3 as a system of pulleys with complementary stages and transmission belt but it is obvious that it could also be of any known type.
En marche normale, lorsque le conducteur du véhicule actionne le pédalier 1 au moyen des pédales 20, l'énergie qu'il communique au système d'armage est accumulée dans les ressorts 7 qui s'arment progressivement tant que la force de résistance du véhicule due à son inertie est supérieure à la force des ressorts. Il s'établit un équilibre entre le degré d'armage de l'accumulateur d'énergie et la vitesse du véhicule, ce qui régularise le développement de l'effort sur le pédalier.In normal operation, when the driver of the vehicle actuates the crankset 1 by means of the pedals 20, the energy which he communicates to the winding system is accumulated in the springs 7 which are gradually arming as long as the resistance force of the vehicle due to its inertia is greater than the force of the springs. A balance is established between the degree of arming of the energy accumulator and the speed of the vehicle, which regulates the development of the effort on the crankset.
Bien entendu, le pédalier pourrait être remplacé par un système à commande à main, par exemple à bras oscillant autour d'un axe vertical ou par un moteur agissant sur l'axe 17. Le pédalier ou le système à commande à main peuvent également être combinés avec un moteur d'appoint agissant sur l'axe 17. On peut choisir par exemple un moteur électrique alimenté par énergie solaire, ou tout autre type de moteur. Comme autres variantes possibles, on indiquera encore que les organes élastiques 7 pourraient être conçus différemment des ressorts à boudin décrits : par exemple, comme des vérins pneumatiques ou comme des ressorts spiraux. Leur nombre n'est évidemment pas limité à 8 et il n'est pas nécessaire qu'ils soient tous identiques.Of course, the crankset could be replaced by a hand-operated system, for example with a swinging arm about a vertical axis or by a motor acting on the axis 17. The crankset or the hand-operated system can also be combined with a booster motor acting on the axis 17. One can choose for example an electric motor powered by solar energy, or any other type of motor. As other possible variants, it will also be indicated that the elastic members 7 could be designed differently from the coil springs described: for example, as pneumatic cylinders or as spiral springs. Their number is obviously not limited to 8 and it is not necessary that they are all identical.
Enfin, alors que dans la forme d'exécution décrite, la liaison d'armage et la liaison de propulsion actionnent les ressorts à la même extrémité, elles pourraient tout aussi bien les actionner à leurs deux extrémités, à l'instar de ce qui se passe avec le ressort moteur d'un mouvement d'horlogerie.Finally, while in the embodiment described, the winding link and the propulsion link actuate the springs at the same end, they could just as well actuate them at their two ends, as in the case of goes with the mainspring of a clockwork movement.
La fig. 8 montre encore une adjonction qu'il est possible de prévoir sur le véhicule décrit. Sur l'arbre à cames 17 et sur l'arbre moteur secondaire 24, on a prévu des poulies 28 et 29 ainsi qu'une courroie 30, de telle sorte qu'il se produit une transmission de couple entre l'arbre à cames 17 et l'arbre moteur secondaire 24. Ce dispositif auxiliaire contribue encore à l'égalisation des couples moteurs exercés par le conducteur sur le pédalier avec le couple résistant que les conditions de la route, le poids du véhicule et son inertie opposent au déplacement .Fig. 8 also shows an addition which it is possible to provide on the vehicle described. On the camshaft 17 and on the secondary drive shaft 24, pulleys 28 and 29 are provided as well as a belt 30, so that a torque transmission occurs between the camshaft 17 and the secondary drive shaft 24. This auxiliary device further contributes to the equalization of the driving torques exerted by the driver on the crankset with the resisting torque which road conditions, the weight of the vehicle and its inertia oppose to displacement.
La fig. 1 suggère encore quel peut être le design d'un tricycle construit selon la présente invention, mais il est bien évident que les connaissances de l'homme du métier et 1 ' art du designer pourront intervenir pour varier dans un très large éventail de possibilités la disposition, le style et les éléments de détail des véhicules destinés à une fabrication industrielle, que ce soit en grande série ou en applications spécialisées.Fig. 1 also suggests what the design of a tricycle constructed according to the present invention may be, but it is quite obvious that the knowledge of a person skilled in the art and the art of the designer may be involved in order to vary in a very wide range of possibilities. layout, style and details of vehicles intended for industrial manufacturing, whether in large series or in specialized applications.
Les fig. 9, 10 et 11 que l'on décrit ci-après se rapportent à une seconde forme d'exécution du véhicule qui présente certains avantages par rapport à celle décrite jusqu'à maintenant.Figs. 9, 10 and 11 which are described below relate to a second embodiment of the vehicle which has certain advantages over that described so far.
Dans ces figures, les parties qui représentent des éléments déjà présents dans la première forme d'exécution sont désignées par les mêmes signes de référence. Ainsi, le pédalier 1, la liaison d'armage 2, le système d'accumulation d'énergie 3 et la liaison de propulsion 4 sont reconnaissables sur les fig. 9 à 11, de même que l'arbre d'entraînement 6 et les roues motrices arrières 5.In these figures, the parts which represent elements already present in the first embodiment are designated by the same reference signs. Thus, the crankset 1, the winding link 2, the energy storage system 3 and the propulsion link 4 are recognizable in FIGS. 9 to 11, as well as the drive shaft 6 and the rear drive wheels 5.
En agissant sur le pédalier 1 au moyen des pédales 20, le conducteur entraîne, par une chaîne 31, un pignon 40 de même diamètre que le pédalier, calé directement au centre de l'arbre à cames 17. Celui-ci porte, comme dans la première forme d'exécution, huit cames 16 réparties sur sa longueur, orientées à 45 degrés les unes par rapport aux autres, mais dont les formes sont entièrement différentes de ce que montraient les fig. 4 et 5. Ici, les cames ont la forme de doigts diamétraux à profils incurvés, ces profils étant représentés aux fig. 10 et 11.By acting on the crankset 1 by means of the pedals 20, the driver drives, by a chain 31, a pinion 40 of the same diameter as the crankset, wedged directly in the center of the camshaft 17. The latter carries, as in the first embodiment, eight cams 16 distributed over its length, oriented at 45 degrees relative to each other, but whose shapes are entirely different from what FIGS. 4 and 5. Here, the cams have the shape of diametrical fingers with curved profiles, these profiles being shown in FIGS. 10 and 11.
Chaque came coopère avec un galet 32 qui fait partie de la liaison d'armage 2 et déplace, en fonction de la rotation de la came, un levier d'armage 33 et un des ressorts 7 servant à accumuler la réserve d'énergie. Chaque galet 32 est relié par un axe 34 à un étrier 35 qui le maintient entre ses joues et porte, sur sa face supérieure, l'extrémité inférieure de l'un des ressorts 7, ceux-ci étant par ailleurs soutenus à leur extrémité supérieure par la barre 8 (non représentée aux fig. 9 à 11) .Each cam cooperates with a roller 32 which is part of the winding link 2 and moves, as a function of the rotation of the cam, a winding lever 33 and one of the springs 7 serving to accumulate the energy reserve. Each roller 32 is connected by a pin 34 to a stirrup 35 which maintains it between its cheeks and carries, on its upper face, the lower end of one of the springs 7, these being moreover supported at their upper end by bar 8 (not shown in figs. 9 to 11).
Les leviers 33 comportent, vus en plan, deux branches parallèles qui s'engagent de part et d'autre du galet 32 correspondant et pivotent sur son axe 34. La liaison entre le système d'armage 2 et le système d'entraînement 4 est réalisée de manière analogue à ce qui a été décrit pour la première forme d'exécution, mais simplifiée, par des roulements 41 à accouplement unidirectionnel dont chacun est solidaire par son chemin de roulement extérieur de la partie arrière de l'un des leviers 33. Ces accouplements unidirectionnels 41 sont montés sur un arbre d'entraînement commun 36 qui assure donc le pivotement des leviers 33. Il porte un pignon central 37 qui est relié par une chaîne 39 à un pignon d'entraînement 38 calé sur l'arbre 6 d'entraînement des roues motrices 5. Les fig. 10 et 11 montrent les deux positions de fonctionnement extrêmes d'un levier d'armage 33 et de la came 16.The levers 33 comprise, seen in plan, two parallel branches which engage on either side of the corresponding roller 32 and pivot on its axis 34. The connection between the winding system 2 and the drive system 4 is produced in a similar manner to that which has been described for the first embodiment, but simplified, by bearings 41 with unidirectional coupling, each of which is secured by its raceway outside of the rear part of one of the levers 33. These unidirectional couplings 41 are mounted on a common drive shaft 36 which therefore ensures the pivoting of the levers 33. It carries a central pinion 37 which is connected by a chain 39 to a drive pinion 38 fixed on the shaft 6 driving the drive wheels 5. FIGS. 10 and 11 show the two extreme operating positions of a winding lever 33 and of the cam 16.
Comme pour la première forme d'exécution, le pédalier ou le système à commande à main peuvent être combinés avec un moteur agissant sur l'axe 17 ou remplacés par un tel moteur.As for the first embodiment, the crankset or the hand-operated system can be combined with a motor acting on the axis 17 or replaced by such a motor.
Le système d'entraînement décrit ici permet également au conducteur de doser son effort selon sa volonté. Il peut être pourvu d'un dispositif de changement des rapports de transmission comme dans la première forme d'exécution. La principale simplification obtenue provient de ce que les deux leviers d'armage et à bascule ont été remplacés par un seul levier d'armage 33 reprenant les fonctions des deux leviers précédents . The drive system described here also allows the driver to adjust his effort as he wishes. It can be provided with a device for changing the transmission ratios as in the first embodiment. The main simplification obtained comes from the fact that the two winding and rocking levers have been replaced by a single winding lever 33 taking up the functions of the two preceding levers.

Claims

Revendications claims
1. Véhicule à roues du type cycle, comprenant un organe d'entraînement (1) actionné en rotation autour d'un axe et des moyens de transmission d'énergie dudit organe rotatif à au moins une roue motrice, ces moyens comportant un système (3) d'accumulation d'une réserve d'énergie avec au moins un organe élastique (7), une liaison d'armage (2) entre l'organe d'entraînement et le système d'accumulation, permettant l'armage du ou des organes élastiques et une liaison de propulsion (4) entre le système d'accumulation d'énergie et la ou les roues motrices (5) , caractérisé en ce que ladite liaison d'armage (2) comporte un arbre à cames (17) accouplé à l'organe rotatif (1) d'entraînement, sur cet arbre une came pour chacun desdits organes élastiques du système d'accumulation, et une liaison à leviers oscillants (13, 9) entre chaque came (16) et l'organe élastique (7) correspondant .1. Wheeled vehicle of the cycle type, comprising a drive member (1) actuated in rotation about an axis and means for transmitting energy from said rotary member to at least one drive wheel, these means comprising a system ( 3) accumulation of an energy reserve with at least one elastic member (7), a winding connection (2) between the drive member and the storage system, allowing the winding of the or elastic members and a propulsion link (4) between the energy storage system and the drive wheel or wheels (5), characterized in that said winding link (2) comprises a camshaft (17) coupled to the rotary drive member (1), on this shaft a cam for each of said elastic members of the accumulation system, and a link with oscillating levers (13, 9) between each cam (16) and the member elastic (7) corresponding.
2. Véhicule selon la revendication 1, caractérisé en ce que le système d'accumulation d'énergie (3) comporte une pluralité d'organes élastiques (7).2. Vehicle according to claim 1, characterized in that the energy storage system (3) comprises a plurality of elastic members (7).
3. Véhicule selon la revendication 1, caractérisé en ce que pour chaque organe élastique (7) la liaison à leviers oscillants comporte deux leviers (13, 9) pivotant autour d'axes parallèles, dont un levier à bascule (13) muni à une extrémité d'un palpeur (15) en contact avec la came (16) correspondante, et un levier d'armage (9) lié par une extrémité à l'organe élastique correspondant, et en ce que les deux leviers de chaque liaison sont reliés l'un à l'autre de manière que tout pivotement du levier à bascule entraîne un pivotement d'un angle augmenté du levier d'armage correspondant . 3. Vehicle according to claim 1, characterized in that for each elastic member (7) the link with oscillating levers comprises two levers (13, 9) pivoting around parallel axes, including a rocking lever (13) provided with a end of a feeler (15) in contact with the corresponding cam (16), and a winding lever (9) linked at one end to the corresponding elastic member, and in that the two levers of each connection are connected to each other so that any pivoting of the rocking lever causes pivoting of an increased angle of the corresponding winding lever.
4. Véhicule selon l'une des revendications 2 ou 3 , caractérisé en ce qu'il comporte un arbre moteur commun (10) faisant partie de ladite liaison de propulsion (4) , sur lequel tous les leviers d'armage (9) sont montés, chacun au moyen d'un palier à accouplement unidirectionnel (11) , celui-ci pivotant librement sur l'arbre quand le levier d'armage est actionné dans le sens de l'armage de l'organe élastique correspondant, mais s ' accouplant audit arbre moteur quand le levier est entraîné en pivotement par la détente de l'organe élastique .4. Vehicle according to one of claims 2 or 3, characterized in that it comprises a common drive shaft (10) forming part of said propulsion link (4), on which all the winding levers (9) are mounted, each by means of a bearing with unidirectional coupling (11), this pivoting freely on the shaft when the winding lever is actuated in the direction of winding of the corresponding elastic member, but s' coupling to said motor shaft when the lever is pivotally driven by the rebound of the elastic member.
5. Véhicule selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte une connexion de retour (28, 30, 29, 18), à chaîne, courroie ou engrenage entre la liaison de propulsion (4) et l'organe d'entraînement rotatif (1) .5. Vehicle according to any one of the preceding claims, characterized in that it comprises a return connection (28, 30, 29, 18), chain, belt or gear between the propulsion link (4) and the rotary drive member (1).
6. Véhicule selon la revendication 5, caractérisé en ce que ladite connexion de retour relie l'arbre moteur secondaire (24) à l'arbre à cames (17) .6. Vehicle according to claim 5, characterized in that said return connection connects the secondary drive shaft (24) to the camshaft (17).
7. Véhicule selon l'une des revendications précédentes, caractérisé en ce que l'organe d'entraînement est agencé pour être entraîné en rotation par une force musculaire humaine.7. Vehicle according to one of the preceding claims, characterized in that the drive member is arranged to be driven in rotation by human muscular force.
8. Véhicule selon la revendication 7, caractérisé en ce qu'il comporte en outre un moteur d'appoint agissant sur l'arbre à cames (17) .8. Vehicle according to claim 7, characterized in that it further comprises a booster engine acting on the camshaft (17).
9. Véhicule selon l'une des revendications 1 à 6, caractérisé en ce que l'Organe d'entraînement est un moteur. 9. Vehicle according to one of claims 1 to 6, characterized in that the drive member is a motor.
EP04711973A 2004-02-18 2004-02-18 Cycle-type vehicle Withdrawn EP1723031A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2004/000087 WO2005077743A1 (en) 2004-02-18 2004-02-18 Cycle-type vehicle

Publications (1)

Publication Number Publication Date
EP1723031A1 true EP1723031A1 (en) 2006-11-22

Family

ID=34842466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04711973A Withdrawn EP1723031A1 (en) 2004-02-18 2004-02-18 Cycle-type vehicle

Country Status (2)

Country Link
EP (1) EP1723031A1 (en)
WO (1) WO2005077743A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103241331B (en) * 2013-04-24 2015-06-17 彭玉双 Travel tricycle

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1612739A (en) * 1925-02-04 1926-12-28 Matsumoto Ryutaro Tricycle
FR879865A (en) * 1941-03-18 1943-03-08 Mechanical thruster for light vehicles
DE930974C (en) * 1952-04-24 1955-07-28 Ernst Fitzner Pedal drive for vehicles
US4416464A (en) * 1981-09-08 1983-11-22 Mattox Robert G Spring assist drive for cycle
DE4343628C2 (en) * 1993-12-21 1997-04-03 Michael Osiander Drive with energy storage for a bicycle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005077743A1 *

Also Published As

Publication number Publication date
WO2005077743A1 (en) 2005-08-25

Similar Documents

Publication Publication Date Title
EP3908511B1 (en) Reduction gear
EP3908512B1 (en) Electric assist device for a bicycle
EP2199198B1 (en) Transmission for bicycle
EP1817223A1 (en) Transmission device for bicycles and the like
FR2733019A1 (en) Vehicular mechanical transmission giving continuous torque variation, e.g. for diesel-electric locomotive
FR2938232A1 (en) TRANSMISSION SYSTEM FOR TWO-WHEEL CYCLE
FR2829992A1 (en) Bicycle gear change has gear change shaft separate from and parallel to crank shaft, pivoting arm supporting rear wheel makes tipping movement on main frame
EP1723031A1 (en) Cycle-type vehicle
WO1993008071A1 (en) Semi-rigid bottom bracket for bicycles
EP1447315A1 (en) Man-powered vehicle
FR2658152A1 (en) PROPULSION DEVICE FOR TWO - DRIVE BICYCLE AND BICYCLE PROVIDED WITH THIS DEVICE.
FR2548999A1 (en) IMPROVEMENTS ON FOLDING PEDALING AND CANOEING FOLDING BICYCLES
WO1995011156A1 (en) Manual or automatic differential selection gear change for pedal vehicles
FR2771070A3 (en) Hub transmission and brake device for bicycle
FR2965601A1 (en) Transmission i.e. speed variable transmission, for e.g. bicycle, has pinion carrying teeth and mounted on pinion shaft, and transmission ratio changing unit changing position of pinion with respect to center of plate
WO2002034615A1 (en) Combined out-in stroke mechanical transmission for facilitating and multiplying the speed of cycles and other pedal appliances
FR2878815A1 (en) Belt mechanism for e.g. bicycle, has levers receiving belt driving force applied by user, and having link point for connection to belts driven on pulleys joined to free wheel, where belts are maintained at constant tension by return spring
EP4026763A1 (en) Motor vehicle provided with a mechanism with anti-squat effect
FR2539697A1 (en) Bicycle with elongate pedal cranks driven with a reciprocating movement
CA2759120A1 (en) 0911 pf scissomotor
CA2732021A1 (en) Add number 2 fab to arel 2009f motor
FR2516041A1 (en) Pedal drive for bicycle - has lever action pedals connected via freewheels to each side of sprocket
BE502473A (en)
BE510852A (en)
BE461235A (en)

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060824

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20061208

17Q First examination report despatched

Effective date: 20061208

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20080715