FR2634720A1 - Rear wheel suspension which can be fitted to a moped - Google Patents
Rear wheel suspension which can be fitted to a moped Download PDFInfo
- Publication number
- FR2634720A1 FR2634720A1 FR8810445A FR8810445A FR2634720A1 FR 2634720 A1 FR2634720 A1 FR 2634720A1 FR 8810445 A FR8810445 A FR 8810445A FR 8810445 A FR8810445 A FR 8810445A FR 2634720 A1 FR2634720 A1 FR 2634720A1
- Authority
- FR
- France
- Prior art keywords
- frame
- spacer
- fork
- rear wheel
- moped
- 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- Withdrawn
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
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
- B62M7/04—Motorcycles characterised by position of motor or engine with engine between front and rear wheels below the frame
-
- 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
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear 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
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/12—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg
- B62K25/14—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg
- B62K25/20—Axle suspensions for mounting axles resiliently on cycle frame or fork with rocking arm pivoted on each fork leg with single arm on each fork leg for rear wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
La présente invention est du du domaine des véhicules à deux roues du genre des cyclomoteurs variateur à courroie, et elle a plus particulierement pour objet des moyens de suspension de la roue arrière adaptables sur de tels cyclomoteurs, soit lors de la construction d'origine, soit en remplacement de moyens de suspension éxistants. The present invention is in the field of two-wheeled vehicles of the type of belt variator mopeds, and it relates more particularly to suspension means of the rear wheel adaptable to such mopeds, either during the original construction, either to replace existing suspension means.
On connaît un modèle tres répandu de cyclomoteurs dits 8 moto-variateur a courroie dans lesquels les moyens de suspension de la roue arriere comprennent un bras oscillant en forme de fourche articulée à une de ses extremites au point d'accrochage au cadre, du support du groupe moto-variateur.Le bras oscillant de tels cyclomoteurs a une triple fonction : il sert d'appui à un ressort de tension de la courroie du variateur, il supporte le palier d'un' ensemble de transmission intermédiaire formé. d'une grande poulie et d'un petit pignon accouplés, il supporte enfin à son extrémité la roue arribre.La longueur du bras oscillant est donc égale a' la distance séparant le point d'articulation du support du moto-variateur de l'axe de la roue arrière ; la relative importance de la longueur du bras oscillant a comme inconvénients d'une part un manque de rigidité de la fourche qu'il forme, ce qui entraîne une médiocrité de la tenue de route, et d'autre part de leghres variations de la tension de la courroie du variateur avec les oscillations du bras, ce qui entraîne une diminution de la puissance sur la roue, une ussure prématurée de la courroie et une consommation accrue de carburant. We know a very widespread model of mopeds called 8 belt motor-variator in which the suspension means of the rear wheel include a fork-shaped oscillating arm articulated at one of its ends at the point of attachment to the frame, the support of the motor-variator group. The swinging arm of such mopeds has a triple function: it serves as a support for a tension spring of the variator belt, it supports the bearing of a 'intermediate transmission assembly formed. a large pulley and a small pinion coupled, it finally supports at its end the drive wheel.The length of the swinging arm is therefore equal to the distance separating the articulation point of the support of the motor-variator of the rear wheel axle; the relative importance of the length of the swingarm has the drawbacks on the one hand of a lack of rigidity of the fork which it forms, which results in poor handling, and on the other of slight variations in tension of the drive belt with the arm oscillations, which results in a decrease in power on the wheel, premature wear of the belt and increased fuel consumption.
Le but de l'invention est de proposer de nouveaux moyens de suspens ion de la roue arrriEre, adaptables aux - cyclomoteurs du type sus-visé, dans lesquels la longueur du bras oscillant est raccourcie 8 la longueur minimale compatible avec le rayon de la roue arrière, et dans lequel la tension de la courroie est indépendante des oscillations du bras. The object of the invention is to propose new means of suspending the rear wheel, adaptable to - mopeds of the above-mentioned type, in which the length of the swinging arm is shortened to 8 the minimum length compatible with the radius of the wheel. rear, and in which the belt tension is independent of the arm's oscillations.
Selon la présente invention un dispositif de suspension de la roue arrière d'un cyclomoteur du type comprenant un cadre, un moto-variateur à courroie, un ensemble intermédiaire de transmission, un point d'accrochage du groupe moto-variateur, un trou de passage de vis de boulon étant pratiqué dans le cadre pour la fixation de carters latéraux, est caractérisé principalement en ce qu'il incorpore un élément de cadre rapportable sur le cadre du cyclomoteur pour former avec lui un triangle indéformable dont ltun des sommets est constitue; par le point d'accrochage du moteur, dont un autre sommet est constitué par ledit trou de passage de vis, et dont le troisième sommet forme palier pour un axe, dit intermédiaire, d'articulation du bras oscillant, et de rotation de l'ensemble de transmission intermédiaire. According to the present invention a device for suspending the rear wheel of a moped of the type comprising a frame, a belt-driven motor-variator, an intermediate transmission assembly, a point of attachment for the motor-variator group, a through hole of bolt screws being made in the frame for fixing lateral casings, is mainly characterized in that it incorporates a frame element which can be attached to the frame of the moped to form with it a non-deformable triangle of which one of the vertices is formed; by the engine attachment point, another apex of which is constituted by said screw passage hole, and the third apex of which forms a bearing for an axis, called an intermediate one, of articulation of the oscillating arm, and of rotation of the intermediate transmission assembly.
De préférence ledit élément de cadre est constitue par une première fourche entretoisee et par une deuxième fourche entretoisée fixée sur la première à environ 800 d'angle, chaque branche desdites fourches comportant a' son extrémité une lumiere destinee au passage d'une vis de boulonnage.L'element de cadre comporte en outre dans le prolongement des branches de la première fourche un couple de pattes perces pour le passage dudit axe intermediaire. Preferably said frame element is constituted by a first braced fork and by a second braced fork fixed on the first at about 800 angle, each branch of said forks comprising at its end a light intended for the passage of a bolt screw .The frame element further comprises in the extension of the branches of the first fork a pair of pierced tabs for the passage of said intermediate axis.
Le dispositif de l'invention comprend aussi un bras en forme de fourche comportant à l'une de ses extrémités des fourchettes de fixation de l'axe de la roue arrière et des pattes de fixation des amortisseurs et des garde-boue, et à son autre extrémité une large entretoise rendant fermement solidaires l'une de l'autre les branches de la fourche, et un palier de logement de l'axe. The device of the invention also comprises a fork-shaped arm comprising at one of its ends forks for fixing the axis of the rear wheel and fixing lugs for shock absorbers and mudguards, and at its at the other end, a large spacer making the fork legs firmly attached to each other, and a bearing housing the axle.
Ainsi le dispositif de suspension de l'invention se compose de trois pièces qui peuvent être présentées assemblées ou separées : 11 élément de cadre, le bras oscillant et l'axe pouvant relier de façon oscillante les deux premières pièces. Thus, the suspension device of the invention consists of three parts which can be presented assembled or separated: 11 frame element, the swinging arm and the axis being able to connect the first two parts in an oscillating fashion.
Avantageusement encore l'une des branches de l'él-ment de cadre et la branche en regard du bras oscillant sont recourbées en direction d'un plan médian du véhicule, qui est aussi le plan de la roue arrière, de telle sorte qu'un évidement se trouve ménage sur le c8te du dispositif pour permettre le logement de la transmission intermédiaire et son alignement avec la poulie du variateur, d'un côte, et la couronne dentée de la roue arrière, de l'autre coté. Advantageously also one of the branches of the frame el-ment and the branch opposite the swinging arm are bent in the direction of a median plane of the vehicle, which is also the plane of the rear wheel, so that a recess is housed on the side of the device to allow the housing of the intermediate transmission and its alignment with the pulley of the variator, on one side, and the ring gear of the rear wheel, on the other side.
Avantageusement encore les branches de la première fourche de l'element de cadre et les branches du bras oscillant sont constituées de profile tubulaire. Advantageously also the branches of the first fork of the frame element and the branches of the swinging arm consist of tubular profile.
La pressente invention sera mieux comprise et des détails en relevant apparaîtront à la description qui va être faite d'une forme particulière de réalisation, en relation avec les figures des planches annexées dans lesquelles :
La fig. 1 est une élévation schématique du dispositif de l'invention monté sur un cadre de cyclomoteur,
La fig.2 est une vue de dessus correspondante, du seul dispositif,
La fig.3 est une illustration en perspective du dispositif de la fig.2, représenté en trois pieces séparée,
La fig.4 est une coupe de l'articulation, illustrant la réunion des trois pinces de la figure précédente.The present invention will be better understood and details will be apparent from the description which will be given of a particular embodiment, in relation to the figures of the appended plates in which:
Fig. 1 is a diagrammatic elevation of the device of the invention mounted on a moped frame,
Fig. 2 is a corresponding top view of the single device,
Fig.3 is a perspective illustration of the device in Fig.2, shown in three separate pieces,
Fig.4 is a section of the joint, illustrating the meeting of the three clamps of the previous figure.
Surla fig.l on a représente un cyclomoteur du type défini plus haut, par son cadre 1 et par un groupe comprenant un moteur 2 et une poulie de variateur 3 , le groupe étant suspendu au cadre par l'intermédiaire d'un support 4 fixé en un point 5. On fig.l there is shown a moped of the type defined above, by its frame 1 and by a group comprising a motor 2 and a variator pulley 3, the group being suspended from the frame by means of a fixed support 4 at a point 5.
Le dispositif de l'invention se compose essentiellement d'un élément de cadre rapportable 6, d'un bras oscillant 7 et d'un axe 8, dit intermédiaire, d'articulation du bras oscillant 7 sur l'élément de cadre. The device of the invention essentially consists of a reportable frame element 6, a swinging arm 7 and an axis 8, said to be intermediate, of articulation of the swinging arm 7 on the frame element.
L'axe 8 sert aussi d'axe de rotation à un ensemble de transmission intermédiaire comprenant une grande poulie 9 et un petit pignon 10 ; la grande poulie est en relation par l'intermédiaire d'une courroie 11 avec la poulie 3 du variateur, tandis que le petit pignon est en relation avec une couronne dentée 12 par l'intermediaire d'une chaîne 13.The axis 8 also serves as an axis of rotation for an intermediate transmission assembly comprising a large pulley 9 and a small pinion 10; the large pulley is connected by means of a belt 11 with the pulley 3 of the variator, while the small pinion is connected with a ring gear 12 by means of a chain 13.
L'élément de cadre rapportable se compose lui-même d'une première fourche 14,14'et d'une deuxième fourche 15,15', solidaires l'une de l'autre; une patte 17 solidaire du cadre comporte le point 5 de suspension du groupe moto-variateur 2,3; le même boulon sert d'axe de suspension du groupe et de fixation des extrémités de la fouche 14,14'; un trou 18 percé d'origine dans le cadre 1 et servant la fixation de carters latéraux, permet le passage d'un boulon de fixation des extrémités de la fourche 15,15'. Un ressort 16 prenant appui contre la première fourche 14,14'drus coté et contré le support 4 du groupe moto-variateur, assure une tension constante de la courroie 11. The reportable frame element itself consists of a first fork 14, 14 ′ and a second fork 15, 15 ′, integral with one another; a lug 17 secured to the frame includes the point 5 of suspension of the motor-variator group 2,3; the same bolt serves as the group suspension axis and for fixing the ends of the beam 14,14 '; a hole 18 originally drilled in the frame 1 and used for fixing the side casings, allows the passage of a fixing bolt of the ends of the fork 15,15 '. A spring 16 bearing against the first fork 14, 14 'on the side and countering the support 4 of the motor-variator group, ensures constant tension of the belt 11.
Sur les figures 2 et 3, il apparaît que la première fourche est constituee de deux branches tubulaires 15 et 15' relièes entre elles par une entretoise 19 et par une traverse 20 à partir de laquelle s'élève la deuxième fourche constituée de -deux fers plats 15 et 15' reliés au voisinage de leur extrémité superieure par une entretoise 21; les extrémités des branches 14 et 14'de la première fourche supportent chacune une patte percée 22,22', respectivement.Le bras oscillant en forme de fourche est composé de deux branches 7 et 7'constituées d'un profilé tubulaire; les branches 7 et 7'sont reliées l'une à l'autre par une large entretoise 26 et par un tube transversal 27(fig.4) servant de palier a l'axe intermédiaire 28; les autres extrémités du bras 7,7' supportent de la façon habituelle des fourchettes 29 de fixation de l'axe de roue arrière et des pattes 30 de fixation des amortisseurs et des garde-boue; on remarque aussi sur la face supérieure des branches du bras, des douilles 25 pour la fixation de repose-pieds. In FIGS. 2 and 3, it appears that the first fork is made up of two tubular branches 15 and 15 'connected to each other by a spacer 19 and by a cross member 20 from which rises the second fork made up of two irons plates 15 and 15 'connected in the vicinity of their upper end by a spacer 21; the ends of the branches 14 and 14 ′ of the first fork each support a pierced tab 22, 22 ′, respectively. The swing arm in the form of a fork is composed of two branches 7 and 7 ′ constituted by a tubular profile; the branches 7 and 7 'are connected to each other by a wide spacer 26 and by a transverse tube 27 (fig.4) serving as a bearing for the intermediate axis 28; the other ends of the arm 7,7 'support in the usual way forks 29 for fixing the rear wheel axle and lugs 30 for fixing the shock absorbers and mudguards; we also note on the upper side of the arms of the arms, sockets 25 for fixing the footrest.
Sur la figure 4, il apparaît que l'axe intermédiaire 28 possède la structure d'un boulon autour et le long de l'axe duquel sont disposées deux entretoise$ tubulaires: une première entretoise 31 destinée à être logée avec possibilite de rotation, dans le tube tranversal 27, et une deuxième entretoise 32 calée contre la première par l'écrou 33; cette seconde entretoise sert d'essieu à l'ensemble de transmission intermédiaire 9,10; des bagues antifriction 34 séparent l'entretoise 31 du tube 26 de manière à permettre la libre oscillation du bras 7,7', tandis que des roulements, à billes par exemple, permettent la libre rotation de la transmission intermédiaire par rapport à l'entretoise 32.On remarque sur la fig.4,en coupe, les pattes 22 et 22' prenant appui sur les extrémités de l'entretoise 31, tandis qu'un certain jeu subsiste entre ces pattes et les extrémités du tube transversal 27. In Figure 4, it appears that the intermediate axis 28 has the structure of a bolt around and along the axis of which are arranged two tubular spacers $: a first spacer 31 intended to be housed with the possibility of rotation, in the transverse tube 27, and a second spacer 32 wedged against the first by the nut 33; this second spacer serves as an axle for the intermediate transmission assembly 9, 10; anti-friction rings 34 separate the spacer 31 from the tube 26 so as to allow free oscillation of the arm 7,7 ', while bearings, for example ball bearings, allow the free rotation of the intermediate transmission relative to the spacer 32. We can see in fig.4, in section, the tabs 22 and 22 'bearing on the ends of the spacer 31, while a certain clearance remains between these tabs and the ends of the transverse tube 27.
Revenant à la figure 2, on observera que la branche 14 de l'element de cadre, et la branche en regard 7 du bras oscillant, sont recourbes en direction du plan médian 35, pour ménager un évidement 36 permettant l'alignement de la transmission intermédiaire. Returning to FIG. 2, it will be observed that the branch 14 of the frame element, and the opposite branch 7 of the oscillating arm, are bent in the direction of the median plane 35, to provide a recess 36 allowing the alignment of the transmission intermediate.
Bien que l'on ait décrit et représente une forme particulière de rgalisation de l'invention, il doit être compris que la portée de celleci n'est pas limitée à cette forme, mais qu'elle s'étend à des formes équivalentes, telles par exemple qu'une structure en boitier pour l'élément de cadre rapportable au lieu d'une structure à deux branches tubulaires de section carrée; ou encore, bien que le matériau constitutif de la forme representée soit de l'acier, on pourrait aussi concevoir des structures equivalentes réalisées en matériaux composites tels que stratifiés. Although a particular form of equalization of the invention has been described and represents, it should be understood that the scope of this is not limited to this form, but that it extends to equivalent forms, such for example that a box structure for the reportable frame element instead of a structure with two tubular branches of square section; or, although the material constituting the represented shape is steel, one could also conceive equivalent structures made of composite materials such as laminates.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8810445A FR2634720A1 (en) | 1988-07-27 | 1988-07-27 | Rear wheel suspension which can be fitted to a moped |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8810445A FR2634720A1 (en) | 1988-07-27 | 1988-07-27 | Rear wheel suspension which can be fitted to a moped |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2634720A1 true FR2634720A1 (en) | 1990-02-02 |
Family
ID=9369043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8810445A Withdrawn FR2634720A1 (en) | 1988-07-27 | 1988-07-27 | Rear wheel suspension which can be fitted to a moped |
Country Status (1)
Country | Link |
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FR (1) | FR2634720A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5961135A (en) * | 1997-10-15 | 1999-10-05 | Smock; Daniel D. | Go-cart frame and wheel suspension |
DE20012972U1 (en) | 2000-07-27 | 2000-09-28 | Robur GmbH, 09405 Zschopau | Frame for a vehicle with an accumulator-operated electric drive |
WO2002094649A1 (en) * | 2001-05-24 | 2002-11-28 | Spi S.R.L. | Chain drive system with two independent rings with intermediate double-pinion transmission element |
GB2458108A (en) * | 2008-03-03 | 2009-09-09 | Robert Ian Sykes | Swingarm motorcycle drive trains |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1138812A (en) * | 1954-10-01 | 1957-06-20 | Motorcycles, in particular two or three wheels, with continuous transmission by V-belt | |
US3298713A (en) * | 1964-11-06 | 1967-01-17 | Joseph L Plain | Extension adapter and method for lengthening the wheel base of a motorcycle |
EP0046094A1 (en) * | 1980-08-04 | 1982-02-17 | CYCLES PEUGEOT Société dite: | Motor unit for a two-wheeled vehicle |
EP0060568A1 (en) * | 1981-03-18 | 1982-09-22 | Zündapp-Werke Gmbh | Supporting joint for the motor and rear-wheel swing arm of a motorised two-wheeled vehicle |
FR2533625A1 (en) * | 1982-09-29 | 1984-03-30 | Honda Motor Co Ltd | COOLING DEVICE FOR MOTORCYCLE ENGINE |
US4735277A (en) * | 1985-03-06 | 1988-04-05 | Prince Curtis L | Motorcycle drive wheel suspension system |
-
1988
- 1988-07-27 FR FR8810445A patent/FR2634720A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1138812A (en) * | 1954-10-01 | 1957-06-20 | Motorcycles, in particular two or three wheels, with continuous transmission by V-belt | |
US3298713A (en) * | 1964-11-06 | 1967-01-17 | Joseph L Plain | Extension adapter and method for lengthening the wheel base of a motorcycle |
EP0046094A1 (en) * | 1980-08-04 | 1982-02-17 | CYCLES PEUGEOT Société dite: | Motor unit for a two-wheeled vehicle |
EP0060568A1 (en) * | 1981-03-18 | 1982-09-22 | Zündapp-Werke Gmbh | Supporting joint for the motor and rear-wheel swing arm of a motorised two-wheeled vehicle |
FR2533625A1 (en) * | 1982-09-29 | 1984-03-30 | Honda Motor Co Ltd | COOLING DEVICE FOR MOTORCYCLE ENGINE |
US4735277A (en) * | 1985-03-06 | 1988-04-05 | Prince Curtis L | Motorcycle drive wheel suspension system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5961135A (en) * | 1997-10-15 | 1999-10-05 | Smock; Daniel D. | Go-cart frame and wheel suspension |
DE20012972U1 (en) | 2000-07-27 | 2000-09-28 | Robur GmbH, 09405 Zschopau | Frame for a vehicle with an accumulator-operated electric drive |
WO2002094649A1 (en) * | 2001-05-24 | 2002-11-28 | Spi S.R.L. | Chain drive system with two independent rings with intermediate double-pinion transmission element |
GB2458108A (en) * | 2008-03-03 | 2009-09-09 | Robert Ian Sykes | Swingarm motorcycle drive trains |
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