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WO2019025898A1 - Electric tricycle with roll motion - Google Patents

Electric tricycle with roll motion Download PDF

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Publication number
WO2019025898A1
WO2019025898A1 PCT/IB2018/055444 IB2018055444W WO2019025898A1 WO 2019025898 A1 WO2019025898 A1 WO 2019025898A1 IB 2018055444 W IB2018055444 W IB 2018055444W WO 2019025898 A1 WO2019025898 A1 WO 2019025898A1
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WO
WIPO (PCT)
Prior art keywords
tricycle
roll
fixed
neutral plane
axis
Prior art date
Application number
PCT/IB2018/055444
Other languages
French (fr)
Inventor
Antoine Ducloux
Istvan Matyas
Rémi Gribaudo
Bertrand Barre
Francis Lepage
Original Assignee
Compagnie Générale Des Établissements Michelin
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 Compagnie Générale Des Établissements Michelin filed Critical Compagnie Générale Des Établissements Michelin
Publication of WO2019025898A1 publication Critical patent/WO2019025898A1/en

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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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
    • 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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/027—Motorcycles with three wheels
    • 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
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B62K5/06—Frames for tricycles

Definitions

  • the present invention relates to a tricycle comprising a fixed rear support substantially elongated along a fixed support axis SF-SF and for carrying the rear wheels, a movable front portion with a front wheel mounted on a fork, the movable front portion being pivotally mounted relative to the fixed rear support by means of a roll arm having a longitudinal axis BR-BR forming an angle ⁇ relative to a neutral plane N in which the three wheels would be likely to contact the ground in the absence of roll.
  • Bicycles and tricycles with electric motorization are means of transport increasingly used and popular in cities, especially in large cities because they are an economical and non-polluting alternative to thermal vehicles.
  • the potential saving of time due to the use of such a vehicle compared to a four-wheeled vehicle can be considerable.
  • their parking is simpler and often free.
  • US 4448436 discloses a tricycle with roll and a mechanism for locking the roll under certain conditions.
  • EP 2505406 discloses a tricycle with a rolling motion for the turns whose mechanical members are arranged to provide optimum stability.
  • the document FR 3020335 describes a tricycle with a frame articulated in rotation about an axis of articulation. This device allows the vehicle to be stable in turns.
  • US4678053 discloses a motorized tricycle provided with a frame articulated around a roll axis. However, teaching the document does not allow to deduce a positioning angle of the roll axis and a distance between this axis and the contact point on the ground of a virtual axis passing through the roll axis. The description does not include any information concerning dimensions or relative distances.
  • Document FR3020335 discloses an electric motor tricycle with an articulated frame.
  • the joint of the frame joint is visible in Figure 1.
  • the point is largely at a distance from the rear wheel and the point of contact.
  • the teaching of this document does not allow to obtain a precise dimension.
  • a first object of the invention is to provide a tricycle with improved dynamic characteristics during the taxi.
  • Another object of the invention is to provide a tricycle of simple and inexpensive construction.
  • Yet another object of the invention is to provide a very stable tricycle.
  • the invention provides a tricycle comprising a fixed rear support substantially elongated along a fixed support axis SF-SF and for carrying the rear wheels, a movable front portion roll with a front wheel mounted on a fork, the movable front portion being pivotally mounted relative to the fixed rear support by means of a roll arm having a longitudinal axis BR-BR forming an angle ⁇ with respect to a neutral plane N in which the three wheels would be likely to contact the ground in the absence of roll in order to generate a deflection of the rear wheels in the direction of the turn when the movable portion pivots in roll towards the center of the turn, the virtual axis BR-BR intersecting said neutral plane N to a point B at a distance L less than 0.8 meters behind a point of contact C between the rear wheels and said neutral plane N.
  • This architecture avoids the tilting of the rear axle due to the centrifugal force during a turn. According to this architecture, the more the point B is close to the point C, the more the dynamic performance of the tricycle, in particular the stability, are optimized.
  • the BR-BR axis intersects the vertical plane containing the center of the rear wheels at a point A at a height H of the neutral plane N less than 0.1 meter.
  • the angle a is between 5 and 10 degrees, and more preferably corresponds substantially to 7 degrees.
  • the roll arm comprises a fixed portion connected to one of the front or rear supports and a free rotation part connected with the other support.
  • the free portion in rotation is advantageously mounted on a bearing.
  • FIG. 1 illustrates an exemplary embodiment of an example of a tricycle, seen in perspective from the rear, during a setting roll;
  • FIG. 2 is a schematic representation illustrating an example of connection mode between the front and rear portions of a tricycle with a roll of the invention according to the invention
  • FIG. 3 is a side view of an embodiment of a tricycle comprising a roll arm according to the invention.
  • FIG. 4 is a close view of the roll arm of the tricycle of Figure 3.
  • FIG. 1 illustrates an embodiment of a tricycle 1 according to the invention.
  • the vehicle is illustrated in the steering phase on the left.
  • the vehicle comprises a rear support 2 carrying the rear wheels 3 and a front portion 4 mobile rolling.
  • FIGS. 2 and 3 schematically illustrates the arrangement between the front and rear parts.
  • the degree of freedom between parts 2 and 4 is achieved by means of a roll arm 8 interconnecting these parts.
  • the fixed rear support 2 comprises an active portion of substantially elongate shape along an SF-SF axis.
  • the roll arm 8 forms an elongated body along the BR-BR axis.
  • FIGS. 2 and 3 show that the BR-BR axis of the roll arm 8 forms an angle alpha, between 5 ° and 10 ° with respect to a neutral plane N in which the three wheels 2 and 3 would be capable of contact the ground in the absence of roll. In current use, this neutral plane N corresponds to the ground.
  • the preferred alpha angle is 7 °.
  • the free end of the rear support 2 serves as a fixing point for a fixed side roll arm 8.
  • the other side of the roll arm is rotatably mounted by means of a bearing 9 inserted in the attachment zone of the front part 4.
  • the front and rear parts 2 and 4 therefore have a degree of freedom between them.
  • the BR-BR axis of the roll arm virtually contacts the neutral plane N at a point B located behind the point of contact C between the rear wheels and the neutral plane N.
  • the distance L between the points B and C is at most 0.8 m, and more preferably less than 0.5 m, and even more preferably less than 0.3 m.
  • the height H between the point C and the point A intersecting the BR-BR axis and passing through the center of rotation of the rear wheels is less than 0.1 m and preferably less than 0.05 m.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automatic Cycles, And Cycles In General (AREA)

Abstract

The invention relates to a tricycle (1) comprising: a fixed rear support (2) which extends substantially along a fixed support axis SF-SF and which can carry the rear wheels (3); and a front part (4) that can perform a roll motion, mounted pivotably with respect to the fixed rear support (2) by means of a roll arm (8) having a longitudinal axis BR-BR forming an angle α with respect to a neutral plane (N).

Description

TRICYCLE ELECTRIQUE AVEC ROULIS DOMAINE TECHNIQUE DE L'INVENTION  ELECTRIC TRICYCLE WITH ROLL TECHNICAL FIELD OF THE INVENTION
[0001] La présente invention concerne un tricycle comprenant un support arrière fixe sensiblement allongé le long d'un axe de support fixe SF-SF et permettant de porter les roues arrière, une partie avant mobile avec une roue avant montée sur une fourche, la partie avant mobile étant montée pivotante par rapport au support arrière fixe à l'aide d'un bras de roulis d'axe longitudinal BR-BR formant un angle a par rapport à un plan neutre N dans lequel les trois roues seraient susceptibles de contacter le sol en absence de roulis. The present invention relates to a tricycle comprising a fixed rear support substantially elongated along a fixed support axis SF-SF and for carrying the rear wheels, a movable front portion with a front wheel mounted on a fork, the movable front portion being pivotally mounted relative to the fixed rear support by means of a roll arm having a longitudinal axis BR-BR forming an angle α relative to a neutral plane N in which the three wheels would be likely to contact the ground in the absence of roll.
ETAT DE LA TECHNIQUE ANTERIEURE STATE OF THE PRIOR ART
[0002] Les bicyclettes et tricycles à motorisation électrique sont des moyens de transport de plus en plus utilisés et prisés dans les villes, notamment dans les grandes agglomérations car ils constituent une alternative économique et non polluante aux véhicules thermiques. D'autre part, pour un trajet donné, le gain de temps potentiel du fait de l'utilisation d'un tel véhicule par rapport à un véhicule à quatre roues peut être considérable. De plus, leur stationnement est plus simple et souvent gratuit. [0002] Bicycles and tricycles with electric motorization are means of transport increasingly used and popular in cities, especially in large cities because they are an economical and non-polluting alternative to thermal vehicles. On the other hand, for a given path, the potential saving of time due to the use of such a vehicle compared to a four-wheeled vehicle can be considerable. In addition, their parking is simpler and often free.
[0003] L'avantage des tricycles par rapport aux vélos est leur grande stabilité. L'architecture à trois roues procure cette stabilité, même à faible vitesse et à l'arrêt. Cependant, en virage, avec un tricycle classique, en cas de survitesse et/ou de rayon de virage trop serré, il subsiste un important risque qu'une roue du tricycle soit soulevée par rapport au sol, engendrant une perte plus ou moins importante de stabilité. The advantage of tricycles over bicycles is their great stability. The three-wheel architecture provides this stability, even at low speed and at rest. However, when turning, with a conventional tricycle, in the event of overspeed and / or a tight turn radius, there is still a significant risk that a tricycle wheel will be raised in relation to the ground, causing a greater or lesser loss of speed. stability.
[0004] Certaines solutions ont été mises en œuvre afin d'améliorer le comportement dynamique des tricycles. Par exemple, le document FR2991282 présente un tricycle inclinable à pilotage dynamique, en particulier à moteur électrique et à encombrement minimum. Le pivotement des axes des roues arrière détermine le virage à effectuer. Ce dispositif présente un mode de conduite peu intuitif. Some solutions have been implemented to improve the dynamic behavior of tricycles. For example, the document FR2991282 presents a reclining tricycle with dynamic control, in particular with electric motor and minimum space requirement. Pivoting of wheel axles back determines the turn to be made. This device presents a mode of unintuitive conduct.
[0005] Le document US 4448436 présente un tricycle avec roulis et un mécanisme permettant de verrouiller ce roulis dans certaines conditions. US 4448436 discloses a tricycle with roll and a mechanism for locking the roll under certain conditions.
[0006] Le document EP 2505406 décrit un tricycle avec un mouvement de roulis pour les virages dont les organes mécaniques sont agencés de façon à fournir une stabilité optimale. EP 2505406 discloses a tricycle with a rolling motion for the turns whose mechanical members are arranged to provide optimum stability.
[0007] Le document FR 3020335 décrit un tricycle avec un cadre articulé en rotation autour d'un axe d'articulation. Ce dispositif permet au véhicule d'être stable dans les virages. The document FR 3020335 describes a tricycle with a frame articulated in rotation about an axis of articulation. This device allows the vehicle to be stable in turns.
[0008] Le document US4678053 décrit un tricycle motorisé pourvu d'un cadre articulé autour d'un axe de roulis. Toutefois, 'enseignement du document ne permet pas de déduire un angle de positionnement de l'axe de roulis ni une distance entre cet axe et le point de contact au sol d'un axe virtuel passant par l'axe de roulis. La description ne comporte par ailleurs aucune information concernant les dimensions ou des distances relatives. US4678053 discloses a motorized tricycle provided with a frame articulated around a roll axis. However, teaching the document does not allow to deduce a positioning angle of the roll axis and a distance between this axis and the contact point on the ground of a virtual axis passing through the roll axis. The description does not include any information concerning dimensions or relative distances.
[0009] Le document FR3020335 décrit un tricycle à motorisation électrique avec un cadre articulé. Le joint de l'articulation du cadre est visible à la figure 1 . Sur cette figure, si on extrapole le point où un axe virtuel passant par le joint couperait le plan neutre, on observe que le point est largement à distance de la roue arrière et du point de contact. Par ailleurs, l'enseignement de ce document ne permet pas d'obtenir une dimension précise. Document FR3020335 discloses an electric motor tricycle with an articulated frame. The joint of the frame joint is visible in Figure 1. In this figure, if we extrapolate the point where a virtual axis passing through the joint would cut the neutral plane, we observe that the point is largely at a distance from the rear wheel and the point of contact. Moreover, the teaching of this document does not allow to obtain a precise dimension.
[0010] Les différents agencements proposés permettent certes d'améliorer quelque peu les qualités dynamiques des tricycles, mais il subsiste un besoin pour un véhicule tricycle électrique plus compact comportant des qualités dynamiques encore améliorées. EXPOSE DE L'INVENTION The various arrangements proposed certainly improve some of the dynamic qualities of tricycles, but there remains a need for a more compact electric tricycle vehicle with improved dynamic qualities. SUMMARY OF THE INVENTION
[0011]Tout d'abord, un premier objectif de l'invention consiste à prévoir un tricycle présentant des caractéristiques dynamiques améliorées lors du roulage. First, a first object of the invention is to provide a tricycle with improved dynamic characteristics during the taxi.
[0012] Un autre objectif de l'invention consiste à prévoir un tricycle de construction simple et peu coûteuse. Another object of the invention is to provide a tricycle of simple and inexpensive construction.
[0013] Encore un autre objectif de l'invention consiste à prévoir un tricycle très stable. Yet another object of the invention is to provide a very stable tricycle.
[0014] Pour ce faire, l'invention prévoit un tricycle comprenant un support arrière fixe sensiblement allongé le long d'un axe de support fixe SF-SF et permettant de porter les roues arrière, une partie avant mobile en roulis avec une roue avant montée sur une fourche, la partie avant mobile étant montée pivotante par rapport au support arrière fixe à l'aide d'un bras de roulis d'axe longitudinal BR-BR formant un angle a par rapport à un plan neutre N dans lequel les trois roues seraient susceptibles de contacter le sol en absence de roulis afin de générer un braquage des roues arrières dans le sens du virage lorsque la partie mobile pivote en roulis vers le centre du virage, l'axe virtuel BR-BR coupant ledit plan neutre N à un point B situé à une distance L inférieure à 0,8 mètres à l'arrière d'un point de contact C entre les roues arrières et ledit plan neutre N. To do this, the invention provides a tricycle comprising a fixed rear support substantially elongated along a fixed support axis SF-SF and for carrying the rear wheels, a movable front portion roll with a front wheel mounted on a fork, the movable front portion being pivotally mounted relative to the fixed rear support by means of a roll arm having a longitudinal axis BR-BR forming an angle α with respect to a neutral plane N in which the three wheels would be likely to contact the ground in the absence of roll in order to generate a deflection of the rear wheels in the direction of the turn when the movable portion pivots in roll towards the center of the turn, the virtual axis BR-BR intersecting said neutral plane N to a point B at a distance L less than 0.8 meters behind a point of contact C between the rear wheels and said neutral plane N.
[0015] Cette architecture permet d'éviter le basculement de l'essieu arrière dû à la force centrifuge lors d'un virage. D'après cette architecture, plus le point B est proche du point C, plus les performances dynamiques du tricycle, en particulier la stabilité, sont optimisées. This architecture avoids the tilting of the rear axle due to the centrifugal force during a turn. According to this architecture, the more the point B is close to the point C, the more the dynamic performance of the tricycle, in particular the stability, are optimized.
[0016] Selon un mode de réalisation avantageux, l'axe BR-BR coupe le plan vertical contenant le centre des roues arrière en un point A situé à une hauteur H du plan neutre N inférieure à 0, 1 mètre. [0017] De manière avantageuse, l'angle a est compris entre 5 et 10 degrés, et plus préférentiellement correspond sensiblement à 7 degrés. According to an advantageous embodiment, the BR-BR axis intersects the vertical plane containing the center of the rear wheels at a point A at a height H of the neutral plane N less than 0.1 meter. Advantageously, the angle a is between 5 and 10 degrees, and more preferably corresponds substantially to 7 degrees.
[0018] Selon un mode de réalisation avantageux, le bras de roulis comporte une partie fixe connectée à l'un des supports avant ou arrière et une partie libre en rotation connectée avec l'autre support. La partie libre en rotation est avantageusement montée sur un roulement. According to an advantageous embodiment, the roll arm comprises a fixed portion connected to one of the front or rear supports and a free rotation part connected with the other support. The free portion in rotation is advantageously mounted on a bearing.
DESCRIPTION DES FIGURES DESCRIPTION OF THE FIGURES
[0019]Tous les détails de réalisation sont donnés dans la description qui suit, complétée par les figures 1 à 4, présentées uniquement à des fins d'exemples non limitatifs, et dans lesquelles: All the details of implementation are given in the description which follows, supplemented by FIGS. 1 to 4, presented solely for purposes of non-limiting examples, and in which:
- la figure 1 illustre un exemple de réalisation d'un exemple de tricycle, vu en perspective depuis l'arrière, lors d'une mise en roulis ;  - Figure 1 illustrates an exemplary embodiment of an example of a tricycle, seen in perspective from the rear, during a setting roll;
- la figure 2 est une représentation schématique illustrant un exemple de mode de connexion entre les parties avant et arrière d'un tricycle à l'aide d'un brase de roulis selon l'invention;  - Figure 2 is a schematic representation illustrating an example of connection mode between the front and rear portions of a tricycle with a roll of the invention according to the invention;
- la figure 3 est une vue de profil d'un exemple de réalisation d'un tricycle comportant un bras de roulis selon l'invention ;  - Figure 3 is a side view of an embodiment of a tricycle comprising a roll arm according to the invention;
- la figure 4 est une vue rapprochée du bras de roulis du tricycle de la figure 3.  - Figure 4 is a close view of the roll arm of the tricycle of Figure 3.
DESCRIPTION DETAILLEE DE L'INVENTION DETAILED DESCRIPTION OF THE INVENTION
[0020] La figure 1 illustre un exemple de réalisation d'un tricycle 1 selon l'invention. Sur cette figure, le véhicule est illustré en phase de braquage à gauche. Le véhicule comporte un support arrière 2 portant les roues arrière 3 et une partie avant 4 mobile en roulis. Figure 1 illustrates an embodiment of a tricycle 1 according to the invention. In this figure, the vehicle is illustrated in the steering phase on the left. The vehicle comprises a rear support 2 carrying the rear wheels 3 and a front portion 4 mobile rolling.
[0021] La figure 2 illustre schématiquement l'agencement entre les parties avant et arrière. Le degré de liberté entre les parties 2 et 4 est obtenu au moyen d'un bras de roulis 8 reliant entre elles ces parties. Tel qu'illustré aux figures 2 et 3, le support arrière 2 fixe comprend une partie active de forme sensiblement allongée selon un axe SF-SF. De son côté, le bras de roulis 8 forme un corps allongé selon l'axe BR-BR. On observe sur les figures 2 et 3 que l'axe BR-BR du bras de roulis 8 forme un angle alpha, compris entre 5° et 10° par rapport à un plan neutre N dans lequel les trois roues 2 et 3 seraient susceptibles de contacter le sol en absence de roulis. En utilisation courante, ce plan neutre N correspond au sol. L'angle alpha préférentiel est de 7°. [0021] Figure 2 schematically illustrates the arrangement between the front and rear parts. The degree of freedom between parts 2 and 4 is achieved by means of a roll arm 8 interconnecting these parts. As illustrated in FIGS. 2 and 3, the fixed rear support 2 comprises an active portion of substantially elongate shape along an SF-SF axis. For its part, the roll arm 8 forms an elongated body along the BR-BR axis. FIGS. 2 and 3 show that the BR-BR axis of the roll arm 8 forms an angle alpha, between 5 ° and 10 ° with respect to a neutral plane N in which the three wheels 2 and 3 would be capable of contact the ground in the absence of roll. In current use, this neutral plane N corresponds to the ground. The preferred alpha angle is 7 °.
[0022] L'extrémité libre du support arrière 2 sert de point de fixation pour un côté fixe bras de roulis 8. L'autre côté du bras de roulis est monté libre en rotation grâce à un roulement 9 inséré dans zone d'attache de la partie avant 4. Les parties avant et arrière 2 et 4 disposent donc d'un degré de liberté entre elles. The free end of the rear support 2 serves as a fixing point for a fixed side roll arm 8. The other side of the roll arm is rotatably mounted by means of a bearing 9 inserted in the attachment zone of the front part 4. The front and rear parts 2 and 4 therefore have a degree of freedom between them.
[0023] Par ailleurs, l'axe BR-BR du bras de roulis contacte virtuellement le plan neutre N en un point B situé derrière le point de contact C entre les roues arrière et le plan neutre N. La distance L entre les points B et C est d'au plus 0,8 m, et plus préférentiellement inférieure à 0,5 m, et encore plus préférentiellement inférieure à 0,3 m. Moreover, the BR-BR axis of the roll arm virtually contacts the neutral plane N at a point B located behind the point of contact C between the rear wheels and the neutral plane N. The distance L between the points B and C is at most 0.8 m, and more preferably less than 0.5 m, and even more preferably less than 0.3 m.
[0024] La hauteur H entre le point C et le point A coupant l'axe BR-BR et passant par le centre de rotation des roues arrière est inférieure à 0, 1 m et préférentiellement inférieure à 0,05 m. The height H between the point C and the point A intersecting the BR-BR axis and passing through the center of rotation of the rear wheels is less than 0.1 m and preferably less than 0.05 m.
[0025] Grâce à cette géométrie, les roues arrière 3 sont constamment en contact avec le sol, même dans les virages, augmentant considérablement la stabilité du tricycle 1 . Cette architecture permet d'augmenter l'angle de braquage du véhicule. Numéros de référence employés sur les figures With this geometry, the rear wheels 3 are constantly in contact with the ground, even in turns, greatly increasing the stability of the tricycle 1. This architecture makes it possible to increase the steering angle of the vehicle. Reference numbers used in the figures
Tricycle Tricycle
Support arrière (fixe) Rear support (fixed)
Roue arrière Rear wheel
Support avant (mobile en roulis) Front support (mobile roll)
Fourche Fork
Roue avant Front wheel
Guidon Handlebar
Bras de roulis Roll arm
Roulement Rolling

Claims

REVENDICATIONS
1 . Tricycle (1 ) comprenant un support arrière (2) fixe sensiblement allongé le long d'un axe de support fixe SF-SF et permettant de porter les roues arrière (3), une partie avant (4) mobile en roulis avec une roue avant (6) montée sur une fourche (5), la partie avant mobile (4) étant montée pivotante par rapport au support arrière (2) fixe à l'aide d'un bras de roulis (8) d'axe longitudinal BR-BR formant un angle a par rapport à un plan neutre (N) dans lequel les trois roues (2, 3) seraient susceptibles de contacter le sol en absence de roulis afin de générer un braquage des roues arrières (3) dans le sens du virage lorsque la partie mobile (4) pivote en roulis vers le centre du virage, caractérisé en ce que l'axe virtuel BR-BR coupe ledit plan neutre (N) à un point B situé à une distance L inférieure à 0,8 mètres à l'arrière d'un point de contact C entre les roues arrières (3) et ledit plan neutre (N). 1. Tricycle (1) comprising a rear support (2) fixed substantially elongated along a fixed support axis SF-SF and for carrying the rear wheels (3), a front portion (4) movable in roll with a front wheel (6) mounted on a fork (5), the movable front part (4) being pivotally mounted relative to the rear support (2) fixed by means of a roll arm (8) of longitudinal axis BR-BR forming an angle α with respect to a neutral plane (N) in which the three wheels (2, 3) would be able to contact the ground in the absence of roll in order to generate a turning of the rear wheels (3) in the direction of the turn when the moving part (4) pivots in roll towards the center of the turn, characterized in that the virtual axis BR-BR intersects said neutral plane (N) at a point B situated at a distance L less than 0.8 meters at the rear of a point of contact C between the rear wheels (3) and said neutral plane (N).
2. Tricycle (1 ) selon la revendication 1 , dans lequel l'axe virtuel BR-BR coupe le plan vertical contenant le centre des roues arrières (3) en un point A situé à une hauteur H du plan neutre (N) inférieure à 0, 1 mètre. 2. Tricycle (1) according to claim 1, wherein the BR-BR virtual axis intersects the vertical plane containing the center of the rear wheels (3) at a point A at a height H of the neutral plane (N) less than 0, 1 meter.
3. Tricycle (1 ) selon l'une quelconque des revendications 1 ou 2, dans lequel l'angle a est compris entre 5 et 10 degrés. Tricycle (1) according to any one of claims 1 or 2, wherein the angle a is between 5 and 10 degrees.
4. Tricycle (1 ) selon l'une quelconque des revendications 1 à 3, dans lequel l'angle a est de 7 degrés. 4. Tricycle (1) according to any one of claims 1 to 3, wherein the angle a is 7 degrees.
5. Tricycle (1 ) selon l'une quelconque des revendications 1 à 4, dans lequel le bras de roulis (8) comporte une partie fixe connectée à l'un des supports avant (4) ou arrière (2) et une partie libre en rotation connectée avec l'autre support (4, 2). Tricycle (1) according to any one of claims 1 to 4, wherein the roll arm (8) has a fixed portion connected to one of the front supports (4) or rear (2) and a free portion in rotation connected with the other support (4, 2).
6. Tricycle (1 ) selon la revendication 5, dans lequel la partie libre en rotation est montée sur un roulement (9). 6. Tricycle (1) according to claim 5, wherein the free portion in rotation is mounted on a bearing (9).
PCT/IB2018/055444 2017-08-03 2018-07-21 Electric tricycle with roll motion WO2019025898A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR17/70830 2017-08-03
FR1770830A FR3069838B1 (en) 2017-08-03 2017-08-03 TRICYCLE ELECTRIC WITH ROLL

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WO2019025898A1 true WO2019025898A1 (en) 2019-02-07

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EP4098531A1 (en) * 2021-06-02 2022-12-07 Pashley Holdings Limited Vehicle

Citations (8)

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US4448436A (en) 1981-07-14 1984-05-15 Honda Giken Kogyo Kabushiki Kaisha Locking system for rolling-type tricycle
US4678053A (en) 1983-01-08 1987-07-07 Honda Giken Kogyo Kabushiki Kaisha Tiltable tricycle
JPH1053182A (en) * 1996-08-08 1998-02-24 Honda Motor Co Ltd Automatic tricycle autonomous device
US6276480B1 (en) * 1996-12-06 2001-08-21 Citymobil Ag Three-wheel motor vehicle
GB2382334A (en) * 2001-11-24 2003-05-28 Rodney John Davey Tiltable vehicle
EP2505406A1 (en) 2011-03-31 2012-10-03 Honda Motor Co., Ltd. Electric three-wheeled vehicle
FR2991282A1 (en) 2012-06-04 2013-12-06 Peugeot Citroen Automobiles Sa Inclinable tricycle for e.g. urban mobility individual, has central and side structures inclined laterally to cause turn of tricycle at inclined side and front-back shift of rear wheel, where rear wheel is located outside turn
FR3020335A1 (en) 2014-04-25 2015-10-30 Automobiles Ligier TRICYCLE VEHICLE WITH ELECTRIC MOTORIZATION

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4448436A (en) 1981-07-14 1984-05-15 Honda Giken Kogyo Kabushiki Kaisha Locking system for rolling-type tricycle
US4678053A (en) 1983-01-08 1987-07-07 Honda Giken Kogyo Kabushiki Kaisha Tiltable tricycle
JPH1053182A (en) * 1996-08-08 1998-02-24 Honda Motor Co Ltd Automatic tricycle autonomous device
US6276480B1 (en) * 1996-12-06 2001-08-21 Citymobil Ag Three-wheel motor vehicle
GB2382334A (en) * 2001-11-24 2003-05-28 Rodney John Davey Tiltable vehicle
EP2505406A1 (en) 2011-03-31 2012-10-03 Honda Motor Co., Ltd. Electric three-wheeled vehicle
FR2991282A1 (en) 2012-06-04 2013-12-06 Peugeot Citroen Automobiles Sa Inclinable tricycle for e.g. urban mobility individual, has central and side structures inclined laterally to cause turn of tricycle at inclined side and front-back shift of rear wheel, where rear wheel is located outside turn
FR3020335A1 (en) 2014-04-25 2015-10-30 Automobiles Ligier TRICYCLE VEHICLE WITH ELECTRIC MOTORIZATION

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