FR2612460A1 - Rear axle assembly for a motor vehicle and motor vehicle equipped with such an axle assembly - Google Patents

Rear axle assembly for a motor vehicle and motor vehicle equipped with such an axle assembly Download PDF

Info

Publication number
FR2612460A1
FR2612460A1 FR8703567A FR8703567A FR2612460A1 FR 2612460 A1 FR2612460 A1 FR 2612460A1 FR 8703567 A FR8703567 A FR 8703567A FR 8703567 A FR8703567 A FR 8703567A FR 2612460 A1 FR2612460 A1 FR 2612460A1
Authority
FR
France
Prior art keywords
vehicle
arms
rear axle
watt
transverse
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.)
Granted
Application number
FR8703567A
Other languages
French (fr)
Other versions
FR2612460B1 (en
Inventor
Armand Froumajou
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
Original Assignee
Automobiles Peugeot SA
Automobiles Citroen SA
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 Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR8703567A priority Critical patent/FR2612460B1/en
Publication of FR2612460A1 publication Critical patent/FR2612460A1/en
Application granted granted Critical
Publication of FR2612460B1 publication Critical patent/FR2612460B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/051Trailing arm twist beam axles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00Indexing codes relating to suspension types
    • B60G2200/20Semi-rigid axle suspensions
    • B60G2200/21Trailing arms connected by a torsional beam, i.e. twist-beam axles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00Indexing codes relating to suspension types
    • B60G2200/30Rigid axle suspensions
    • B60G2200/34Stabilising mechanisms, e.g. for lateral stability
    • B60G2200/342Watt linkage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00Indexing codes relating to suspension types
    • B60G2200/40Indexing codes relating to the wheels in the suspensions
    • B60G2200/445Self-steered wheels
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00Indexing codes relating to suspension types
    • B60G2200/40Indexing codes relating to the wheels in the suspensions
    • B60G2200/462Toe-in/out
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/421Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60GVEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/422Links for mounting suspension elements

Abstract

The present invention relates to a rear axle assembly for a vehicle, of the trailing arm type. The rear axle assembly is characterised in that it comprises a so-called Watt mechanism 5 with three bars 6; 9 arranged between the two arms 1 in an approximately vertical plane close to the vertical plane passing through the centre of the wheels R, the two transverse bars 9 of the Watt mechanism being connected in an articulated way by their ends to the rear ends of the two arms 1 respectively, whilst the central bar 6 of the said mechanism is mounted to pivot on a pin 7 which is longitudinal to the vehicle and fixed to the structure 3 of the latter. The present invention finds an application in the motor industry.

Description

La présente invention concerne un train arrière pour véhicule automobile, notamment du type à bras tirés. The present invention relates to a rear axle for a motor vehicle, in particular of the type with drawn arms.

Elle vise également un véhicule automobile équipé d'un tel train arrière. It also relates to a motor vehicle equipped with such a rear axle.

Dans les trains arrière du type ci-dessus définis, chaque roue est solidaire de l'extrémité arrière d'un bras, dont l'extrémité avant est montée pivotante autour d'un axe transversal au véhicule. Chaque roue se débat donc dans un plan vertical parallèle à l'axe longitudinal de la caisse du véhicule, le bras étant guidé par des articulations disposées suivant l'axe transversal. In rear axles of the type defined above, each wheel is integral with the rear end of an arm, the front end of which is pivotally mounted about an axis transverse to the vehicle. Each wheel therefore struggles in a vertical plane parallel to the longitudinal axis of the vehicle body, the arm being guided by articulations arranged along the transverse axis.

Suivant une variante du train arrière, les deux bras sont généralement articulés sur une traverse qui est reliée à la caisse du véhicule par l'intermédiaire d'articulations élastiques disposées à ses extrémités. According to a variant of the rear axle, the two arms are generally articulated on a cross member which is connected to the vehicle body by means of elastic articulations arranged at its ends.

Selon une autre variante du train arrière, les bras sont directement soudés sur la traverse, dont la configuration est étudiée pour quelle soit déformable en torsion et les articulations élastiques de la traverse servent également d'axe de pivotement pour les bras. According to another variant of the rear axle, the arms are directly welded to the cross-member, the configuration of which is designed to be deformable in torsion and the elastic joints of the cross-member also serve as a pivot axis for the arms.

La description faite ci-dessus des variantes d'exécution du train arrière connu montre que la liaison finale du train arrière avec la caisse du véhicule s'effectue par l'intermédiaire des articulations d'extrémité de la traverse, articulations qui doivent avoir une certaine souplesse afin d'atténuer les chocs et le bruit du roulement. The description given above of the variant embodiments of the known rear axle shows that the final connection of the rear axle to the body of the vehicle is effected by means of the end joints of the cross member, joints which must have a certain flexibility to reduce impact and rolling noise.

Ces articulations étant situées en avant de l'essieu, il en résulte que la force transversale engendrée par exemple lorsque le véhicule négocie un virage provoque un certain braquage du train arrière du fait de la déformation des articulations de la traverse.  These joints being located in front of the axle, it follows that the transverse force generated for example when the vehicle negotiates a turn causes a certain deflection of the rear axle due to the deformation of the joints of the cross member.

Ce braquage peut encore être accentué par la déformation des articulations de pivotement des bras dans le cas où ces bras sont articulés à traverse ou par déformation de l'ensemble bras-traverse dans le cas de l'assemblage soudé.This deflection can be further accentuated by the deformation of the pivot joints of the arms in the case where these arms are articulated to cross member or by deformation of the arm-cross member assembly in the case of the welded assembly.

Ce braquage produit sur le véhicule un caractère survireur nuisible au comportement et à la stabilité de celui-ci. Une solution pour limiter l'effet survireur est de durcir les articulations précitées mais ceci va à l'encontre du confort recherché du véhicule. This steering produces on the vehicle an oversteer character detrimental to the behavior and stability thereof. One solution to limit the oversteer effect is to harden the aforementioned joints, but this goes against the desired comfort of the vehicle.

La présente invention a pour but d'éliminer les inconvénients ci-dessus des trains arrière connus en proposant un train arrière caractérisé en ce qu'il comprend un mécanisme à trois barres, de Watt, disposé entre les deux bras du train dans un plan approximativement vertical voisin du plan vertical passant par le centre des deux roues, les deux barres transversales du mécanisme de Watt étant reliées de façon articulée à leurs extrémités libres respectivement aux l'extrémités arrière des deux bras tandis que la barre centrale du mécanisme est montée pivotante sur un axe longitudinal au véhicule et fixé à la structure de celui-ci. The object of the present invention is to eliminate the above drawbacks of known rear axles by proposing a rear axle characterized in that it comprises a mechanism with three bars, of Watt, arranged between the two arms of the axle in an approximately plane. vertical close to the vertical plane passing through the center of the two wheels, the two transverse bars of the Watt mechanism being connected in an articulated manner at their free ends respectively to the rear ends of the two arms while the central bar of the mechanism is pivotally mounted on a longitudinal axis to the vehicle and fixed to the structure thereof.

Ainsi, suivant le train arrière ci-dessus de l'invention, les efforts transversaux appliqués au véhicule se déplaçant par exemple dans un virage sont principalement repris directement sur la caisse de structure du véhicule par le mécanisme de Watt et ne passent que faiblement par les attaches de la traverse, ce qui a pour conséquence d'éliminer l'effet survireur susmentionné.  Thus, according to the above rear axle of the invention, the transverse forces applied to the vehicle moving for example in a turn are mainly taken up directly on the body structure of the vehicle by the Watt mechanism and pass only weakly through the ties of the cross, which has the effect of eliminating the aforementioned oversteer effect.

Le train arrière suivant l'invention peut de plus être conçu de manière à rendre le véhicule sous-vireur lorsque celui-ci se déplace par exemple dans un virage. The rear axle according to the invention can moreover be designed so as to make the vehicle understeer when it is moving for example in a curve.

A cet effet, le mécanisme de Watt est disposé en arrière à une distance prédéterminée du plan vertical passant par le centre des roues et les articulations élastiques précitées présentent une flexibilité prédéterminée en direction transversale de façon qu'une force transversale exercée par le sol sur les roues quand le véhicule se déplace dans le virage engendre un microbraquage du train dans le sens du virage. To this end, the Watt mechanism is arranged rearward at a predetermined distance from the vertical plane passing through the center of the wheels and the above-mentioned elastic joints have a predetermined flexibility in transverse direction so that a transverse force exerted by the ground on the wheels when the vehicle is moving in the turn generates a microbraking of the train in the direction of the turn.

Une autre solution destinée à rendre le véhicule sous-vireur consiste à disposer l'axe de pivotement de la barre centrale du mécanisme de Watt à une hauteur relative au sol telle qu'en position moyenne des bras du train les barres transversales soient notablement inclinées vers le bas du c8té de leurs extrémités reliées respectivement aux bras. Another solution intended to make the vehicle understeer consists in placing the pivot axis of the central bar of the Watt mechanism at a height relative to the ground such that in the middle position of the arms of the train the transverse bars are markedly inclined towards the bottom of the side of their ends connected respectively to the arms.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparattront plus clairement au cours de la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de l'invention, et dans lesquels
- la figure 1 est une vue en perspective d'un train arrière du véhicule conforme à l'invention
- la figure 2 est une vue schématique de dessus du véhicule comprenant le train arrière suivant l'invention ;;
- la figure 3 est une vue schématique suivant la flèche A en figure 1 du train arrière du véhicule se déplaçant en ligne droite
- la figure 4 est également une vue schématique suivant la flèche A du train arrière du véhicule lequel se déplace dans un virage et s'incline en dévers
- la figure 5 est une vue schématique de dessus du véhicule représentant le train arrière lorsque le véhicule est à la position représentée en figure 4.
The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly during the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating a embodiment of the invention, and in which
- Figure 1 is a perspective view of a rear axle of the vehicle according to the invention
- Figure 2 is a schematic top view of the vehicle comprising the rear axle according to the invention;
- Figure 3 is a schematic view along arrow A in Figure 1 of the rear axle of the vehicle moving in a straight line
- Figure 4 is also a schematic view along arrow A of the rear axle of the vehicle which moves in a bend and tilts on a slope
FIG. 5 is a schematic top view of the vehicle representing the rear axle when the vehicle is in the position shown in FIG. 4.

En se reportant aux figures, le train arrière pour véhicule automobile comprend, comme cela est déjà connu en soi, deux supports de roue 1 constitués dans le cas présent par les bras tirés portant chacun à leur extrémité arrière la roue R et la fusée de roue la. Dans le cas présent, les deux bras 1 sont solidaires à leurs extrémités avant, par exemple par soudage d'une traverse 2 déformable en torsion, dont les deux extrémités sont fixées ou attachées à la structure ou caisse 3 du véhicule (représentée partiellement) par l'intermédiaire respectivement de deux articulations relativement souples 4 servant également d'axes de pivotement des bras par rapport à la structure 3 du véhicule, ces axes de pivotement étant disposés transversalement au véhicule. Referring to the figures, the rear axle for a motor vehicle comprises, as is already known per se, two wheel supports 1 constituted in this case by the pulled arms each carrying at their rear end the wheel R and the wheel stub the. In the present case, the two arms 1 are secured at their front ends, for example by welding a cross-member 2 torsionally deformable, the two ends of which are fixed or attached to the structure or body 3 of the vehicle (shown partially) by respectively through two relatively flexible articulations 4 also serving as pivot axes of the arms relative to the structure 3 of the vehicle, these pivot axes being arranged transversely to the vehicle.

Bien entendu, au lieu entre soudés à la traverse 2, les bras 1 peuvent également être reliés de façon articulée à la traverse qui sera également reliée à la structure 3 par l'intermédiaire des articulations élastiques 4 disposées à ses extrémités.Of course, instead of welded to the cross member 2, the arms 1 can also be connected in an articulated manner to the cross member which will also be connected to the structure 3 by means of the elastic joints 4 arranged at its ends.

Suivant l'invention, un mécanisme 5 à trois barres de Watt est disposé entre les deux bras 1 sensiblement dans un plan approximativement vertical voisin du plan vertical passant par le centre des deux roues R, c'est-à-dire le plan contenant l'axe X-X reliant les centres des deux roues. According to the invention, a mechanism 5 with three Watt bars is arranged between the two arms 1 substantially in an approximately vertical plane close to the vertical plane passing through the center of the two wheels R, that is to say the plane containing l axis XX connecting the centers of two wheels.

Le mécanisme 5 à trois barres de Watt comprend une première barre courte 6 approximativement verticale montée pivotante en son centre sur un axe longitudinal 7 fixé à la structure 3 du véhicule et articulé à ses deux extrémités 8 à deux barres transversales identiques 9 approximativement horizontales, dont les deux extrémités opposées 10 sont fixées de façon articulée respectivement aux extrémités arrière des deux bras 1. Comme cela est mieux représenté en figure 1, la barre courte 6 est formée par deux plaques parallèles entre lesquelles sont fixés à ses extrémités opposées les axes d'articulation des barres transversales 9 et, en leur centre, l'axe longitudinal 7 qui est supporté entre deux flasques du support 3a sensiblement parallèles solidaires de la structure 3 du véhicule. Les extrémités 10 des barres transversales 9 sont montées articulées aux extrémités arrière des bras 1 par l'intermédiaire d'organes formant chape 11. Il est à noter que les hauteurs par rapport au sol des chapes 11 sur chaque bras sont différentes compte tenu de la géométrie du mécanisme 5 à trois barres de
Watt.
The mechanism 5 with three Watt bars comprises a first short bar 6 approximately vertical pivotally mounted in its center on a longitudinal axis 7 fixed to the structure 3 of the vehicle and articulated at its two ends 8 to two identical transverse bars 9 approximately horizontal, of which the two opposite ends 10 are fixed in an articulated manner respectively to the rear ends of the two arms 1. As is better represented in FIG. 1, the short bar 6 is formed by two parallel plates between which are fixed at its opposite ends the axes of articulation of the transverse bars 9 and, in their center, the longitudinal axis 7 which is supported between two flanges of the substantially parallel support 3a secured to the structure 3 of the vehicle. The ends 10 of the transverse bars 9 are mounted articulated at the rear ends of the arms 1 by means of yoke members 11. It should be noted that the heights with respect to the ground of the yokes 11 on each arm are different taking into account the mechanism geometry 5 with three bars of
Watt.

Par le train arrière conforme à l'invention, toutes les forces longitudinales introduites par chaque roue continuent à être supportées par l'ensemble bras-traverse tandis que l'effort transversal est principalement pris directement par le mécanisme de Watt 5. By the rear axle according to the invention, all the longitudinal forces introduced by each wheel continue to be supported by the arm-cross member assembly while the transverse force is mainly taken directly by the Watt 5 mechanism.

Ainsi, en pompage pur, les angles de débattement des bras 1 sont identiques et le mécanisme 5 à trois barres de Watt fonctionne de façon classique puisqu'il n'y a pas de variations de la distance L entre les points de fixation extérieurs 11 (chapes) des deux barres transversales 9 et tout se passe comme si 1'essieu était rigide (voir figure 3). Thus, in pure pumping, the deflection angles of the arms 1 are identical and the mechanism 5 with three Watt bars works in a conventional manner since there is no variation in the distance L between the external fixing points 11 ( yokes) of the two transverse bars 9 and everything takes place as if the axle were rigid (see FIG. 3).

Par contre, lorsque le véhicule se déplace sur un virage et s'incline en dévers comme représenté en figure 4, les débattements angulaires des bras 1 étant différents la distance L entre les fixations 11 varie. On the other hand, when the vehicle moves on a bend and tilts on a slope as shown in FIG. 4, the angular deflections of the arms 1 being different the distance L between the fasteners 11 varies.

La structure du train arrière de l'invention permet aux articulations d'extrémité 4 de la traverse d'être assouplies sans introduire aucun défaut de guidage. The structure of the rear axle of the invention allows the end joints 4 of the crossmember to be relaxed without introducing any guide defect.

En disposant le mécanisme 5 à trois barres de
Watt en arrière à une distance prédéterminée du plan vertical passant par le centre des roues comme cela ressort des figures 2 et 5, lorsque le véhicule se déplace dans un virage, et en prévoyant les articulations élastiques 4 d'une souplesse ou flexibilité prédéterminées en direction transversale au véhicule, il est possible d'obtenir un micro-braquage sous-vireur dans le sens V du virage par déformation transversale des articulations élastiques 4 d'extrémité de la traverse 2, le point d'application de la force F exercée par le sol sur les roues R étant situé entre le mécanisme 5 de Watt et la traverse 2 comme cela est représenté en figure 2.
By arranging the mechanism 5 with three bars of
Watt back at a predetermined distance from the vertical plane passing through the center of the wheels as shown in Figures 2 and 5, when the vehicle is moving in a turn, and providing the elastic joints 4 with a flexibility or predetermined flexibility in direction transverse to the vehicle, it is possible to obtain a understeer micro-deflection in the direction V of the turn by transverse deformation of the elastic joints 4 at the end of the cross-member 2, the point of application of the force F exerted by the ground on the wheels R being located between the mechanism 5 of Watt and the cross-member 2 as shown in FIG. 2.

Cette figure représente de façon schématique le déplacement transversal de la traverse 2 lorsque le véhicule se déplace dans un virage à droite, l'extrémité gauche par rapport à la figure 2 de la traverse 2 se trouvant plus en avant du véhicule que l'extrémité droite de celle-ci. La flèche M représente la direction du micro-braquage du train de roue dans le sens V du virage. This figure schematically represents the transverse displacement of the cross member 2 when the vehicle is traveling in a right turn, the left end relative to FIG. 2 of the cross member 2 being more in front of the vehicle than the right end of it. The arrow M represents the direction of the micro-turning of the wheel set in the direction V of the turn.

Le micro-braquage M du train arrière tendant à rendre lé véhicule sous-vireur peut également être obtenu en disposant l'axe de pivotement 7 de la barre centrale 6 fixé sur la structure 3 à un hauteur relative au sol telle qu'en position moyenne des bras 1 les barres transversales 9 soient notablement inclinées vers le bas du côté de leurs extrémités 10 reliées respectivement aux bras 1 comme représenté notamment en figure 4. The micro-deflection M of the rear axle tending to make the understeer vehicle can also be obtained by arranging the pivot axis 7 of the central bar 6 fixed on the structure 3 at a height relative to the ground such that in the middle position. of the arms 1 the transverse bars 9 are notably inclined downwards on the side of their ends 10 connected respectively to the arms 1 as shown in particular in FIG. 4.

Plus précisément, compte tenu du dévers provoqué par la force centrifuge lorsque le véhicule se déplace par exemple dans un virage comme représenté en figure 4, le débattement vers le haut de la roue gauche conjugué avec le débattement vers le bas de la roue droite, tend à décaler l'axe longitudinal 7 de la barre courte 6 vers la droite par rapport à la figure 4, donc l'axe Y-Y de l'essieu sera par rapport à l'axe Z-Z de la structure ou caisse 3 du véhicule décalé à gauche du fait de l'inclinaison du débattement f des extrémités 10 des barres 9 due à l'orientation vers le bas de ces barres en position moyenne 9a et produira, compte tenu des articulations flexibles 4 d'extrémité de la traverse 2, un braquage M dans le sens V du virage, c'est-à-dire à tendance sous-vireuse (voir également la figure 5). Bien entendu, lorsque le véhicule se déplace dans un virage à gauche, un micro-braquage M dans le sens du virage sera également produit, l'axe Y-Y de l'essieu étant alors décalé à droite par rapport à l'axe Z-Z de la structure 3 du véhicule. Dans les deux cas, les articulations 4 subissent de légères déformations de sens opposés en direction longitudinale.  More precisely, taking into account the superelevation caused by the centrifugal force when the vehicle is moving for example in a turn as shown in FIG. 4, the upward movement of the left wheel combined with the downward movement of the right wheel, tends to offset the longitudinal axis 7 of the short bar 6 to the right with respect to FIG. 4, therefore the axis YY of the axle will be relative to the axis ZZ of the structure or body 3 of the vehicle shifted to the left due to the inclination of the travel f of the ends 10 of the bars 9 due to the downward orientation of these bars in the middle position 9a and will produce, taking into account the flexible joints 4 at the end of the cross member 2, a deflection M in the direction V of the turn, that is to say with a sub-tacky tendency (see also Figure 5). Of course, when the vehicle is traveling in a left turn, a micro-turning M in the direction of the turning will also be produced, the axis YY of the axle then being shifted to the right relative to the axis ZZ of the vehicle structure 3. In both cases, the joints 4 undergo slight deformations of opposite directions in the longitudinal direction.

Il est par ailleurs à noter que les deux solutions décrites ci-dessus tendant à rendre le véhicule sous-vireur peuvent être combinées sans sortir du cadre de la présente invention, comme cela est d'ailleurs représenté généralement aux figures 2-5.  It should also be noted that the two solutions described above tending to make the understeer vehicle can be combined without departing from the scope of the present invention, as is moreover generally represented in FIGS. 2-5.

Claims (4)

REVENDICATIONS 1. Train arrière pour véhicule automobile, du type comprenant deux supports de roue notamment à bras tirés, dont chaque extrémité arrière porte une roue et chaque extrémité avant est montée pivotante par rapport à la structure du véhicule autour d'un axe transversal au véhicule ; et une traverse de support des extrémités avant des deux bras reliée à la structure par des articulations élastiques ; caractérisé en ce qu'il comprend un mécanisme (5) à trois barres (6 ; 9) de Watt, disposé entre les deux bras (1) dans un plan approximativement vertical voisin du plan vertical passant par le centre des deux roues (R), les deux barres transversales (9) du mécanisme (5) de Watt étant reliées de façon articulée par leurs extrémités libres respectivement aux l'extrémités arrière des deux bras (1) tandis que la barre centrale (6) dudit mécanisme (5) est montée pivotante sur un axe (7) longitudinal au véhicule et fixé à la structure (3) de celui-ci. 1. Rear axle for a motor vehicle, of the type comprising two wheel supports, in particular with pulled arms, each rear end of which carries a wheel and each front end is pivotally mounted relative to the structure of the vehicle about an axis transverse to the vehicle; and a cross member for supporting the front ends of the two arms connected to the structure by elastic joints; characterized in that it comprises a mechanism (5) with three Watt bars (6; 9), arranged between the two arms (1) in an approximately vertical plane close to the vertical plane passing through the center of the two wheels (R) , the two transverse bars (9) of the Watt mechanism (5) being hingedly connected by their free ends respectively to the rear ends of the two arms (1) while the central bar (6) of said mechanism (5) is pivotally mounted on an axis (7) longitudinal to the vehicle and fixed to the structure (3) thereof. 2. Train arrière selon la revendication 1, caractérisé en ce que le mécanisme (5) de Watt précité est disposé en arrière à une distance prédéterminée du plan vertical passant par le centre des roues (R) et les articulations élastiques (4) précitées présentent une flexibilité prédéterminée en direction transversale de façon qu'une force transversale exercée par le sol sur les roues (R) quand le véhicule se déplace dans un virage engendre un micro-braquage (M) dudit train dans le sens (V) du virage.  2. rear axle according to claim 1, characterized in that the aforementioned Watt mechanism (5) is disposed rearward at a predetermined distance from the vertical plane passing through the center of the wheels (R) and the above-mentioned elastic joints (4) have a predetermined flexibility in the transverse direction so that a transverse force exerted by the ground on the wheels (R) when the vehicle is moving in a turn generates a micro-turning (M) of said train in the direction (V) of the turning. 3. Train arrière selon la revendication 1 ou 2, caractérisé en ce que l'axe de pivotement (7) de la barre centrale (6) du mécanisme (5) de Watt est disposé à une hauteur relative au sol telle qu'en position moyenne des bras (1) les barres transversales (9) soient notablement inclinées vers le bas du côté de leurs extrémités (10) reliées respectivement aux bras (1). 3. rear axle according to claim 1 or 2, characterized in that the pivot axis (7) of the central bar (6) of the mechanism (5) of Watt is disposed at a height relative to the ground such that in position middle of the arms (1) the transverse bars (9) are notably inclined downwards on the side of their ends (10) connected respectively to the arms (1). 4. Véhicule automobile équipé d'un train arrière selon l'une des revendications 1 à 3.  4. Motor vehicle equipped with a rear axle according to one of claims 1 to 3.
FR8703567A 1987-03-16 1987-03-16 REAR TRAIN FOR MOTOR VEHICLE AND MOTOR VEHICLE EQUIPPED WITH SUCH TRAIN Expired - Fee Related FR2612460B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8703567A FR2612460B1 (en) 1987-03-16 1987-03-16 REAR TRAIN FOR MOTOR VEHICLE AND MOTOR VEHICLE EQUIPPED WITH SUCH TRAIN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8703567A FR2612460B1 (en) 1987-03-16 1987-03-16 REAR TRAIN FOR MOTOR VEHICLE AND MOTOR VEHICLE EQUIPPED WITH SUCH TRAIN

Publications (2)

Publication Number Publication Date
FR2612460A1 true FR2612460A1 (en) 1988-09-23
FR2612460B1 FR2612460B1 (en) 1990-09-07

Family

ID=9349007

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8703567A Expired - Fee Related FR2612460B1 (en) 1987-03-16 1987-03-16 REAR TRAIN FOR MOTOR VEHICLE AND MOTOR VEHICLE EQUIPPED WITH SUCH TRAIN

Country Status (1)

Country Link
FR (1) FR2612460B1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720691A1 (en) * 1994-06-01 1995-12-08 Daimler Benz Ag Suspension for a rear axle.
FR2853281A1 (en) * 2003-04-04 2004-10-08 Renault Sa FLEXIBLE REAR AXLE WITH HOIST, AND CORRESPONDING VEHICLE
DE10357885A1 (en) * 2003-12-11 2005-07-14 Benteler Automobiltechnik Gmbh torsion
DE102006026961A1 (en) * 2006-06-09 2007-12-13 Audi Ag Composite pivot pin for motor vehicle, comprises front ends of longitudinal guide are connected firmly with axle body, and wheel is positioned at rear ends of longitudinal guide
DE102006033755A1 (en) * 2006-07-21 2008-01-24 GM Global Technology Operations, Inc., Detroit Twist-beam axle with additional Watt linkage
DE102006033756A1 (en) * 2006-07-21 2008-01-24 GM Global Technology Operations, Inc., Detroit Wheel suspension for unguided wheels and vehicle body with a suspension
DE102011012373A1 (en) * 2011-02-24 2012-08-30 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Suspension of a vehicle axle and vehicle
DE102011116037A1 (en) * 2011-10-17 2013-04-18 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Torsion beam axle for passenger car, has Watt's linkage including Watt's bars, which are rotatably mounted at ends in respective bar-bearing points of beam, and impress restoring force on trailing arms during elastic deformation of axle
DE102022000365B3 (en) 2022-01-27 2023-02-02 Karl Thiel Offset link axle for vehicles with a low loading area height and large wheel diameters

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767224A (en) * 1971-01-26 1973-10-23 Audi Ag Rear axle for motor cars
DE2742426A1 (en) * 1977-09-21 1979-03-29 Audi Nsu Auto Union Ag Suspension for not-steered vehicle wheels - has shock absorbers jointed to cross bars of Watt linkage
FR2474967A1 (en) * 1980-02-06 1981-08-07 Zampini Hector Independent suspension for paired vehicle wheels - has linkage rods automatically matching axle pin rakes during movement
JPS6092977A (en) * 1983-10-27 1985-05-24 Nissan Motor Co Ltd Tack-in controller
AT381676B (en) * 1984-04-25 1986-11-10 Markus Dr Thoma DOUBLE CONTROL ARM SUSPENSION WITH CRASH-CORRECTING CONTROL ARM SHIFT

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767224A (en) * 1971-01-26 1973-10-23 Audi Ag Rear axle for motor cars
DE2742426A1 (en) * 1977-09-21 1979-03-29 Audi Nsu Auto Union Ag Suspension for not-steered vehicle wheels - has shock absorbers jointed to cross bars of Watt linkage
FR2474967A1 (en) * 1980-02-06 1981-08-07 Zampini Hector Independent suspension for paired vehicle wheels - has linkage rods automatically matching axle pin rakes during movement
JPS6092977A (en) * 1983-10-27 1985-05-24 Nissan Motor Co Ltd Tack-in controller
AT381676B (en) * 1984-04-25 1986-11-10 Markus Dr Thoma DOUBLE CONTROL ARM SUSPENSION WITH CRASH-CORRECTING CONTROL ARM SHIFT

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 9, no. 238 (M-416)[1961], 25 septembre 1985; & JP-A-60 92 977 (NISSAN JIDOSHA K.K.) 24-05-1985 *

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720691A1 (en) * 1994-06-01 1995-12-08 Daimler Benz Ag Suspension for a rear axle.
US5566969A (en) * 1994-06-01 1996-10-22 Mercedes-Benz Ag Rear axle suspension with reduced oversteer
FR2853281A1 (en) * 2003-04-04 2004-10-08 Renault Sa FLEXIBLE REAR AXLE WITH HOIST, AND CORRESPONDING VEHICLE
WO2004089665A1 (en) * 2003-04-04 2004-10-21 Renault S.A.S. Flexible rear axle with a control column and corresponding vehicle
DE10357885A1 (en) * 2003-12-11 2005-07-14 Benteler Automobiltechnik Gmbh torsion
DE10357885B4 (en) * 2003-12-11 2007-10-11 Benteler Automobiltechnik Gmbh torsion
DE102006026961A1 (en) * 2006-06-09 2007-12-13 Audi Ag Composite pivot pin for motor vehicle, comprises front ends of longitudinal guide are connected firmly with axle body, and wheel is positioned at rear ends of longitudinal guide
WO2008009286A1 (en) * 2006-07-21 2008-01-24 Gm Global Technology Operations, Inc. Wheel suspension for non-steered wheels and motor vehicle body with a wheel suspension
RU2445216C2 (en) * 2006-07-21 2012-03-20 Джи Эм Глоубал Текнолоджи Оперейшнз, Инк. Rear axle with wheels suspended on lengthwise levers with extra watt mechanism
DE102006033756A1 (en) * 2006-07-21 2008-01-24 GM Global Technology Operations, Inc., Detroit Wheel suspension for unguided wheels and vehicle body with a suspension
DE102006033755A1 (en) * 2006-07-21 2008-01-24 GM Global Technology Operations, Inc., Detroit Twist-beam axle with additional Watt linkage
GB2455011A (en) * 2006-07-21 2009-06-03 Gm Global Tech Operations Inc Twist-beam rear axle comprising an additional watt linkage
GB2455011B (en) * 2006-07-21 2011-02-23 Gm Global Tech Operations Inc Suspension for non-steered wheels on a body of a motor vehicle
CN101516656B (en) * 2006-07-21 2012-02-01 Gm全球科技运作股份有限公司 Twist-beam rear axle comprising an additional watt linkage
WO2008009285A1 (en) * 2006-07-21 2008-01-24 Gm Global Technology Operations, Inc. Twist-beam rear axle comprising an additional watt linkage
US8177245B2 (en) 2006-07-21 2012-05-15 GM Global Technology Operations LLC Twist-beam rear axle comprising an additional Watt linkage
DE102011012373A1 (en) * 2011-02-24 2012-08-30 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Suspension of a vehicle axle and vehicle
CN102673342A (en) * 2011-02-24 2012-09-19 通用汽车环球科技运作有限责任公司 Suspension of a vehicle axle and vehicle
US8414001B2 (en) 2011-02-24 2013-04-09 GM Global Technology Operations LLC Suspension of a vehicle axle and vehicle
CN102673342B (en) * 2011-02-24 2016-12-14 通用汽车环球科技运作有限责任公司 The suspension of axletree and automobile
DE102011116037A1 (en) * 2011-10-17 2013-04-18 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Torsion beam axle for passenger car, has Watt's linkage including Watt's bars, which are rotatably mounted at ends in respective bar-bearing points of beam, and impress restoring force on trailing arms during elastic deformation of axle
DE102022000365B3 (en) 2022-01-27 2023-02-02 Karl Thiel Offset link axle for vehicles with a low loading area height and large wheel diameters

Also Published As

Publication number Publication date
FR2612460B1 (en) 1990-09-07

Similar Documents

Publication Publication Date Title
EP1883574B1 (en) Rear fork for bicycle
FR2662118A1 (en) REAR TRAIN OF A MOTOR VEHICLE.
FR2536345A1 (en) SUSPENSION WITH SUPERIMPOSED TRIANGLES AND VARIABLE HUNTING ANGLE FOR VEHICLES
EP1610967B1 (en) Flexible rear axle with a control column and corresponding vehicle
FR2496566A1 (en) AXLE, IN PARTICULAR REAR AXLE FOR TOURISM CARS COMPRISING GUIDE WHEELS INDEPENDENTLY ONE OF THE OTHER
EP0246133A1 (en) Rear suspension for motor vehicles with independent wheels
FR2612460A1 (en) Rear axle assembly for a motor vehicle and motor vehicle equipped with such an axle assembly
EP0025744A1 (en) Motor vehicle front suspension assembly
FR2707926A1 (en) Improved suspension device for the front wheel of a motor vehicle
FR3071813B1 (en) ATTELABLE ROAD MOTOR VEHICLE HAS SUSPENSION AND COMPACT DIRECTION
FR2884761A1 (en) Motor vehicle powered axle, has cross piece including two ends fixed on support structures, where rear ends of each of longitudinal arms are mounted on corresponding support structure of cross piece by using spacing parts
EP1527911A1 (en) Semi-deformable rear suspension with longitudinal flexibility
FR2909928A1 (en) BUS SUSPENSION FOR AUTOBUS TYPE TRANSPORT VEHICLE, AND CORRESPONDING TRANSPORT VEHICLE.
EP0683088B1 (en) Front wheel suspension assembly with double transversal triangles and motor vehicle equipped with such an assembly
FR2595995A1 (en) INDEPENDENT WHEEL SUSPENSION, IN PARTICULAR REAR VEHICLE AND ITS APPLICATION TO A POWER WHEEL
FR2738190A1 (en) Rear wheel suspension system for e.g. motor vehicles
FR2841870A1 (en) Suspension system for three-wheeled vehicle that can tilt on bends has force transmission member between transverse connecting bar and dampers
FR2675431A1 (en) Vehicle suspension device with articulated strut
EP1078782B1 (en) Suspension device for the front wheel of a motor car
FR2517604A1 (en) Vehicle towing linkage for e.g. caravan or tailer - comprises two diagonal bars extending between opposite sides of towing vehicle and trailer
FR2861335A1 (en) Axle system for motor vehicle, has steering knuckle fixed to flip stand by elastic connection that is formed by two flexible plates contained in two different planes whose intersection coincides with rotational axis of vehicle wheel
FR2674187A1 (en) Device forming a suspension, particularly for the rear wheel of a motor vehicle
EP0392891B1 (en) Vehicle suspension system
FR2832098A1 (en) Multi-arm rear wheel axle unit comprises, for each wheel, rear and front transverse arms pivoted by elastic connections to chassis and to wheel pivot and suspension leaf spring
FR2466360A1 (en) Compensated suspension for trailer axle - has torsion mounting with rod between chassis and axle

Legal Events

Date Code Title Description
ST Notification of lapse