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WO2015110864A1 - Vélocipède dont le cycliste se tient dans la position debout - Google Patents

Vélocipède dont le cycliste se tient dans la position debout Download PDF

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Publication number
WO2015110864A1
WO2015110864A1 PCT/IB2014/058431 IB2014058431W WO2015110864A1 WO 2015110864 A1 WO2015110864 A1 WO 2015110864A1 IB 2014058431 W IB2014058431 W IB 2014058431W WO 2015110864 A1 WO2015110864 A1 WO 2015110864A1
Authority
WO
WIPO (PCT)
Prior art keywords
levers
tracks
velocipede
lever
roller
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.)
Ceased
Application number
PCT/IB2014/058431
Other languages
English (en)
Inventor
Emilio DI BATTISTA
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
Priority to PCT/IB2014/058431 priority Critical patent/WO2015110864A1/fr
Publication of WO2015110864A1 publication Critical patent/WO2015110864A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K3/00—Bicycles
    • B62K3/002—Bicycles without a seat, i.e. the rider operating the vehicle in a standing position, e.g. non-motorized scooters; non-motorized scooters with skis or runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M1/00—Rider propulsion of wheeled vehicles
    • B62M1/24—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers
    • B62M1/26—Rider propulsion of wheeled vehicles with reciprocating levers, e.g. foot levers characterised by rotary cranks combined with reciprocating levers

Definitions

  • the present invention relates to a velocipede, particularly a velocipede intended to be ridden with the rider in the upright posture .
  • Velocipedes or bicycles known in the prior art always provide a sitting and a posture with the rider leaning forward, extending the back, in order to reach the handlebar .
  • the weight is discharged on the saddle and even in the case where the cyclist stands up for exploiting such force, the frames known in the prior art are made such that the centre of gravity of the body is in a position forward of the pedals, therefore the exploitation of the weight force is not optimized.
  • the driveline of the bicycle described in the mentioned document is made in such a way to force the rider to adapt its own pace to the particular configuration of the driveline without the possibility of changing his/her own pace.
  • the posture of the rider is such that the movement of the legs mimics the stepping motion in one place thus causing the leg muscles to rapidly wear out .
  • the present invention achieves the above aims by providing a velocipede comprising a propelling unit composed of two pivoting levers, each lever being provided, at one end, with a footrest, at the other end with a fulcrum, and in the middle, with a reinforcing structure on which a series of tracks with different curvatures are obtained, which can interact with a roller .
  • pins supporting the rollers placed on crank arms which, joined and staggered one another at 180° by means of an interposed spindle, rotate due to the alternate oscillations of the levers that urge in turns the rollers, which in turn coordinate and limit such oscillations, a sprocket wheel meshing with a drive chain and causing the rear driving wheel to rotate being splined on the spindle .
  • the velocipede comprises a supporting frame composed of :
  • the velocipede of the present invention allows the exploitation of the weight force of the rider to be optimized as a force for propelling the velocipede itself .
  • FIG.l a side view of the velocipede of the present invention according to a possible embodiment
  • FIG.2 a rear view of the velocipede of the present invention according to a possible embodiment
  • TAB 3 a side view of the velocipede of the present invention according to a further embodiment .
  • the surface used for showing the drive chain is pointed out in black .
  • the invention is a velocipede provided with pivoting levers, at their ends they have footrests 7 rigidly fastened, suitably permanently inclined 6, which are the seat for the feet of the rider who in the upright posture moves the legs and feet as if he/she is walking uphill.
  • the levers alternately oscillate in order to simulate the sequence of steps, and they are suitably arranged such that such footrests, during the oscillation, follow a path with a convexity faced towards the ground and the front wheel, with suitably distributed portions.
  • Such arrangement of the levers and footrests 7 allows the rider to have natural movements of the legs and feet, when he/she is intent on transferring the body weight from one footrest 7 to the other one for generating driving power and, above all, it allows all the weight of his/her own body to be used for such purpose.
  • This last characteristic in velocipedes or in bicycles currently on the market is absent since they are provided with a saddle that supports a part of the weight of the rider and he/she is obliged to take such positions that he/she is forced to transfer some other weight on the handlebar.
  • the invention does not provide the saddle and it forces the rider, depending on the postures he/she can take, to distribute all his/her weight only on the footrests 7, figures 1 and 3.
  • This last concept demonstrates that any steering members, suitably mounted on the invention, will not have to support any parts of the weight of the rider but on the contrary, if it is ideal, it can increase the performances of driving power supply and drivability
  • the footrest 7 It is essential for the footrest 7 to be at an appropriate distance from the fulcrum 5, as it is inclined 6 and travels the path mentioned above . Precisely, if the footrest 7 has to be the support for the rider's foot, it has to allow him/her to naturally and comfortably rotate the ankle, and at the points of the path where the footrest 7 reaches the maximum inclination values, with respect to the horizontal plane, due to the oscillation, it has to guarantee the stability of the whole body and in order to obtain it the levers have to be quite long, figures 1 and 3.
  • Such levers since they are long, between the footrest 7 and the fulcrum 5 are equipped with a reinforcing structure on which five tracks 1 with different curvatures are obtained, which are travelable one by one by a roller 11 that drags the pin 10 supporting it and this latter in turn rotates a crank arm 4, it being connected thereto.
  • the pivoting levers urge in turn the two rollers 11, one for each crank arm 4, and consequently they rotate the sprocket wheel splined on the spindle that, at the end, keeps the crank arms 4 staggered one another at 180°.
  • the rollers 11, making a closed circular path in turn coordinate and limit such oscillations .
  • Such sprocket wheel meshed by the drive chain causes the rear driving wheel of the velocipede to rotate .
  • This wide length allows the pivoting levers to reach high torque values that lead to oversize said sprocket wheel, such as shown in FIG.l, with a consequent increase in the driving power .
  • the tracks 1 are classifiable on the basis of the width and orientation of their concavity, these tracks going from a track with a concavity completely faced towards the front wheel to a track with the concavity faced towards the rear wheel .
  • the five tracks 1 can provide to the velocipede different travelling conditions and they have been classified according to their curvature and explicitly on the basis of the orientation and width of the concavity. Specifically: front 1A; slight front IB, absent (straight travelling) 1C; slight rear ID; rear IE.
  • front 1A front 1A
  • slight front IB absent (straight travelling) 1C
  • slight rear ID rear IE.
  • This order of exposition corresponds to how the tracks are arranged in the reinforcing structure of the pivoting lever, and it shows also the progressive course of the gradual change in the driving power supply.
  • figure 1 has to be considered merely as an illustration for better understanding the inventive concept of the present invention and it has not to be considered as limitating it .
  • Each track 1 if travelled by a roller in a complete turn on the circular path thereof, causes the driving power with a different course to be supplied with the effort made by the rider being equal, or vice versa, some tracks 1 require, for advancing the lever, a more rapid displacement of the total weight of the rider. This leads to a power increase that results in a higher driving power supply.
  • the track 1 can be selected by placing, by screwing it, the end of the pin 10 supporting the roller, into one of the threaded holes obtained on the crank arms 4 selected in a position compatible with the track 1 to be used.
  • Tracks 1 in the direction where the roller 11 rolls, have suitable curves that are generated by suitable radii and centers of curvature . This last condition points out the importance of the accuracy of the widths of such arcuate shapes, and of their exact position, in order to accomplish many functions that will be mentioned below.
  • At least one track of said series of tracks, along its extension, is possible to have a variable radius, such to define a path that is not necessarily circular.
  • the roller limits the oscillations of the corresponding lever; this leads to the fact that the pin 10, in any threaded hole it is placed, acts as a stop, that stops the travels of the lever when it reaches the maximum extension width.
  • the pin 10 in any threaded hole it is placed, acts as a stop, that stops the travels of the lever when it reaches the maximum extension width.
  • the velocipede of the present invention provides that the lever, it being long and arranged in a suitable manner with respect to the spindle of the crank arms 4, generates on the roller 11 quite high stresses that characterize the dimensions of the sprocket wheel splined on the spindle, that is the diameter of such wheel is proportional to the intensity of said stress.
  • the rollers 11 can perform a rotational movement on themselves, that allows them to slide along the tracks 1.
  • the external surfaces of the rollers travel on the inner surfaces of the tracks from a starting end-of-travel point to a final end-of-travel point .
  • the path of the roller is divided into two well specific phases, a first phase, the active phase, wherein the roller 11 is subjected to the stress of the lever and wherein the driving power is generated and a second phase, the passive phase, wherein the roller 11 drags the lever to the starting position.
  • the two phases at their ends overlap generating "mixed" phases characterized by being contemporaneously active and passive .
  • roller 11 when rolling on the inner surface of the tracks, depending on the type of phase it is passing through, ideally divides the track into active, passive or contemporaneously as active and passive, namely mixed.
  • the active part is composed of the lower half of each track, while the passive part is composed of the upper half of each track.
  • the rollers have only just travelled in the mixed surfaces 13, of the tracks, of the respective levers and immediately after they will travel in surfaces of different kind.
  • the roller interacting with the lever placed behind the frame, will travel on the active surface of the track IE and contemporaneously the roller that is in the hole 2 of the crank arm 4, interacting with the lever in the foreground, will travel in the passive surface of the track 1A.
  • the levers being equal to one another, have the mixed surface placed inside the tracks located in the same position.
  • roller 11 by travelling in the active parts of the several tracks 1A to IE, generates driving power intensity supplies, with a gradually progressive course, while by travelling in the passive parts of the several tracks 1A to IE, it generates different stresses on the driven lever, with a gradually progressive course.
  • the threaded holes provided on the crank arm 4 depending on their positions can also have other purposes .
  • Five of them 2 are placed at the outermost end of the crank arms 4, suitably arranged at the locations of the five tracks 1, such that the pin supporting the roller, acts as a stop, thus stopping the descending travel of the lever and contemporaneously preventing the footrest 7 from going beyond the line of minimum distance from the ground 8, figures 1 and 3.
  • the other threaded holes 3 provided on the crank arms can only vary the maximum width of the oscillation of the levers .
  • roller 11 with its pin 10, even if used by any track 1, an interval before reaching the stop position that stops the descending travel of a lever, moves the longitudinal axes of the crank arms 4 past the position wherein they are orthogonal to the straight line tangent in the contact point between the roller and the track 1 belonging to the alternative lever.
  • roller 11 before reaching the exclusively active surface, travels in the passive one and once said orthogonality point is passed, it will trvael, for a section, in a contemporaneously active and passive mixed surface 13, in figure 3 arranged at the point of inflection of the curve identified by tracks 1A and IE .
  • the orthogonal arrangement mentioned above is not able to supply driving power as it has a null torque, it has been bypassed. Therefore the invention has such a technical arrangement that the two levers have never a null torque condition overall, unlike traditional current bicycles .
  • both the levers produce driving power, where the intensity will depend on how the weight of the rider will be distributed on the footrests 7.
  • the rollers travel on the mixed surfaces 13 of the respective levers contemporaneously, causing both the levers to go in a descending travel.
  • the rider when feels both the lever going down, has the indication that he/she can completely transfer his/her weight on the footrest placed at a higher level .
  • a fixed footboard 9 has been provided, interposed between the paths of the pivoting levers, useful for starting in case of standing starts and for downhill rides .
  • Figure 3 shows a further embodiment of the velocipede of the present invention, particularly an embodiment intended to disclose a possible variant embodiment of the tracks 1.
  • the track 1 has not a single radius of curvature, but it is composed of two different sections, alternating on the basis of the convexity, with reference to the rear wheel . Therefore a lower section IE, corresponding to the active part and an upper section 1A corresponding to the passive part are shown.
  • the tracks 1 have, in the direction where the roller 11 rolls, suitable curves that are generated by radii with a higher width than the radius of the path travelled by the roller 11 and, if the difference in the dimensions of said radii is small, the different power supply developed in a complete turn of the path of said roll is enhanced.
  • the passive surfaces are those present in the portions of the tracks placed above the threaded holes 2 on the contrary the mixed ones and the active ones are placed under them. Obviously the mixed ones are the continuation of the passive ones.
  • the point of inflection provided in the curve of the track acts as a partition of the active and passive surfaces .
  • the invention is an optimal means of transport with high performances and it allows the rider to take an ergonomic posture and to make natural movements that permit a prolonged use . It can be used both for agonistic and not agonistic activities . Since it is exclusively human powered it is obviously ecological and, by adapting it, it can be a good gymnastic product to be used within in-door facilities, for reproducing the running movement of the rider, avoiding the problems it involves if performed on the ground or on the treadmill . By applying a generator thereto it can produce also energy.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Motorcycle And Bicycle Frame (AREA)

Abstract

Cette invention concerne un vélocipède comprenant des leviers pivotants plutôt longs qui présentent à leur extrémité des repose-pieds (7) fixés de manière rigide, inclinés de manière appropriée (6) qui forment une assise pour les pieds du cycliste qui se tient en position debout et déplace ses jambes et ses pieds comme s'il effectuait une ascension. Pour permettre un tel mouvement, les leviers sont agencés de telle manière que lesdits repose-pieds suivent un parcours convexe orienté vers le sol et la roue avant. Du fait de sa longueur, chaque levier pivotant comprend, entre le repose-pieds (7) et le sommet, une structure de renforcement sur laquelle est formé un ensemble de pistes (1) présentant des courbures différentes et dans lesquelles peut se déplacer un rouleau (11) supporté par une broche (10) qui peut être disposée dans un des orifices filetés ménagés dans un bras de manivelle (4). Le vélocipède selon l'invention comprend en outre deux rouleaux, un par bras de manivelle (4), qui, sous l'effet d'une contrainte exercée alternativement sur l'un et sur l'autre rouleau par les leviers au cours des oscillations alternées, entraînent en rotation les bras de manivelle (4) qui sont reliés à un angle de 180° par une tige interposée et permettent aux rouleaux (11), un par un, de se coordonner et de limiter les oscillations. Une roue dentée, cannelée sur ladite tige, s'engrène avec une chaîne de transmission pour entraîner en rotation la roue arrière. Chaque piste (1) coopérant avec le rouleau (11) est diffère des autres du point de vue de la manière dont la force d'entraînement est fournie, l'effort fourni par le cycliste étant égal. Le vélocipède selon l'invention est uniquement à propulsion humaine et s'il est équipé d'un élément de direction approprié bien agencé ses performances sont accrues. Il s'agit d'un moyen de transport optimal et il peut être utilisé pour des activités sportives de compétition et d'amateur. S'il est adapté, il peut constituer un dispositif d'entraînement valable et il peut en outre être utilisé pour générer de l'énergie s'il est doté d'un générateur.
PCT/IB2014/058431 2014-01-21 2014-01-21 Vélocipède dont le cycliste se tient dans la position debout Ceased WO2015110864A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/058431 WO2015110864A1 (fr) 2014-01-21 2014-01-21 Vélocipède dont le cycliste se tient dans la position debout

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IB2014/058431 WO2015110864A1 (fr) 2014-01-21 2014-01-21 Vélocipède dont le cycliste se tient dans la position debout

Publications (1)

Publication Number Publication Date
WO2015110864A1 true WO2015110864A1 (fr) 2015-07-30

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Family Applications (1)

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PCT/IB2014/058431 Ceased WO2015110864A1 (fr) 2014-01-21 2014-01-21 Vélocipède dont le cycliste se tient dans la position debout

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB499002A (en) * 1937-06-30 1939-01-17 Eugen Woerner An improved chainless cycle with pedal levers
FR908045A (fr) * 1944-11-17 1946-03-28 Dispositif mécanique transformant un mouvement alternatif en mouvement rotatif continu sans point mort plus particulièrement applicable aux vélocipèdes
US20080116655A1 (en) * 2006-11-21 2008-05-22 Bryan Pate Self-propelled vehicle propelled by an elliptical drive train
US20100295263A1 (en) * 2009-05-19 2010-11-25 Pt Motion Works, Inc. Interlocking Guide Tracks for Elliptical Bike and Method of Use
US8220814B1 (en) 2011-06-20 2012-07-17 Michael F Riviglia Bicycle propelled by stepping motion

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB499002A (en) * 1937-06-30 1939-01-17 Eugen Woerner An improved chainless cycle with pedal levers
FR908045A (fr) * 1944-11-17 1946-03-28 Dispositif mécanique transformant un mouvement alternatif en mouvement rotatif continu sans point mort plus particulièrement applicable aux vélocipèdes
US20080116655A1 (en) * 2006-11-21 2008-05-22 Bryan Pate Self-propelled vehicle propelled by an elliptical drive train
US20100295263A1 (en) * 2009-05-19 2010-11-25 Pt Motion Works, Inc. Interlocking Guide Tracks for Elliptical Bike and Method of Use
US8220814B1 (en) 2011-06-20 2012-07-17 Michael F Riviglia Bicycle propelled by stepping motion

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