FR2702709A1 - Motor vehicle rear axle assembly of the type with trailing arms - Google Patents

Motor vehicle rear axle assembly of the type with trailing arms Download PDF

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Publication number
FR2702709A1
FR2702709A1 FR9303081A FR9303081A FR2702709A1 FR 2702709 A1 FR2702709 A1 FR 2702709A1 FR 9303081 A FR9303081 A FR 9303081A FR 9303081 A FR9303081 A FR 9303081A FR 2702709 A1 FR2702709 A1 FR 2702709A1
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FR
France
Prior art keywords
rear axle
vehicle
axis
support
arms
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
FR9303081A
Other languages
French (fr)
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FR2702709B1 (en
Inventor
Goly Fabrice
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
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Filing date
Publication date
Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR9303081A priority Critical patent/FR2702709B1/en
Publication of FR2702709A1 publication Critical patent/FR2702709A1/en
Application granted granted Critical
Publication of FR2702709B1 publication Critical patent/FR2702709B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/18—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only
    • B60G11/183—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only arranged in a plane transverse to the longitudinal axis of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/18—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only
    • B60G11/20—Resilient suspensions characterised by arrangement, location or kind of springs having torsion-bar springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection 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
    • B60G21/04—Interconnection 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
    • B60G21/05—Interconnection 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
    • B60G21/055—Stabiliser bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection 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
    • B60G21/04—Interconnection 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
    • B60G21/05—Interconnection 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
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/001—Suspension arms, e.g. constructional features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/135—Stabiliser bar and/or tube
    • B60G2202/1351—Stabiliser bar and/or tube comprising at least two stabiliser bars parallel to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/13—Torsion spring
    • B60G2202/136—Twist-beam type arrangement
    • B60G2202/1362—Twist-beam type arrangement including a second torsional element, e.g. second beam, stabiliser bar or tube
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/122—Mounting of torsion springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/10—Constructional features of arms
    • B60G2206/124—Constructional features of arms the arm having triangular or Y-shape, e.g. wishbone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/40—Constructional features of dampers and/or springs
    • B60G2206/42—Springs

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

The invention proposes a motor vehicle rear axle assembly (10) of the type in which each of the two wheels (24G) is carried by a support (22G) connected to a first end (20G) of a longitudinal arm (16G), the second end (18G) of which is mounted so it can pivot about a transverse axis (Y-Y) of the vehicle, and of the type including a stabilising anti-sway (anti-roll) bar (38) consisting of a central length (40) which is parallel to the transverse axis of pivoting (Y-Y) of the arms and which is supported by the structure of the vehicle by means of at least one bearing, and of two end sections (46G, 46D) each of which connects one end (48G, 48D) of the central length (40) to one (16G, 16D) of the arms, forming an angle with respect to the central length (40), characterised in that the axis of the bearing (42G, 42D) of the support of the central length (40) of the stabiliser bar (38) is aligned with the transverse axis (Y-Y) of pivoting of the longitudinal arms.

Description

La présente invention concerne un train arrière de véhicule automobile. The present invention relates to a rear axle of a motor vehicle.

L'invention concerne plus particulièrement un train arrière du type à bras tirés dans lequel chacune des deux roues est portée par un support relié à une première extrémité d'un bras longitudinal dont la seconde extrémité est montée pivotante autour d'un axe transversal du véhicule, et du type comportant une barre stabilisatrice antidévers constituée d'un tronçon central qui est parallèle à l'axe transversal de pivotement des bras et qui est supportée par la structure du véhicule au moyen au moins d'un palier, et deux tronçons d'extrémité dont chacun relie une extrémité du tronçon central à l'un des bras en formant un angle par rapport au tronçon central. The invention relates more particularly to a rear axle of the trailing arm type in which each of the two wheels is carried by a support connected to a first end of a longitudinal arm, the second end of which is pivotally mounted around a transverse axis of the vehicle. , and of the type comprising an anti-roll stabilizer bar consisting of a central section which is parallel to the transverse pivot axis of the arms and which is supported by the structure of the vehicle by means of at least one bearing, and two sections of end each of which connects one end of the central section to one of the arms at an angle with respect to the central section.

Un exemple d'un tel train arrière est décrit et représenté dans le document US-A-2.768.002 dans lequel le tronçon central de la barre anti-dévers est un tronçon très court monté, sensiblement au centre du véhicule, dans un palier unique de support. An example of such a rear axle is described and represented in document US-A-2,768.002 in which the central section of the anti-roll bar is a very short section mounted, substantially in the center of the vehicle, in a single bearing. of support.

Dans cette conception, 1 ' axe du palier central de support du tronçon central de la barre stabilisatrice est décalé par rapport à l'axe transversal de pivotement des bras longitudinaux, ce qui provoque lors des débattements de roues, non seulement des contraintes de flexion dans les tronçons inclinés de la barre et dans les bras longitudinaux, ainsi que des contraintes dans les paliers assurant le pivotement des bras sur la structure du véhicule, mais aussi de légères inclinaisons du plan moyen de chaque roue par rapport au plan longitudinal du véhicule, nuisibles à la stabilité de roulage de celuici. In this design, the axis of the central bearing for supporting the central section of the stabilizer bar is offset with respect to the transverse axis of pivoting of the longitudinal arms, which causes, during wheel travel, not only bending stresses in the inclined sections of the bar and in the longitudinal arms, as well as stresses in the bearings ensuring the pivoting of the arms on the structure of the vehicle, but also slight inclinations of the mean plane of each wheel relative to the longitudinal plane of the vehicle, harmful the rolling stability of this.

Afin de remédier aux inconvénients qui viennent d'être mentionnés, l'invention propose un train arrière du type mentionné précédemment, caractérisé en ce que l'axe du palier du support du tronçon central de la barre stabilisatrice est aligné avec l'axe transversal de pivotement des bras longitudinaux. In order to remedy the drawbacks which have just been mentioned, the invention provides a rear axle of the type mentioned above, characterized in that the axis of the bearing of the support for the central section of the stabilizer bar is aligned with the transverse axis of pivoting of the longitudinal arms.

Selon d'autres caractéristiques de l'invention
- le tronçon central de la barre stabilisatrice est supporté sur la structure du véhicule par deux paliers agencés sensiblement au voisinage des extrémités opposées du tronçon central de la barre stabilisatrice
- chaque support de roue est relié à la structure du véhicule par un amortisseur téléscopique sensiblement vertical dont l'extrémité inférieure est reliée au support de roue au moyen d'une articulation d'axe sensiblement parallèle à l'axe transversal de pivotement des bras longitudinaux
- chaque support est relié à la structure du véhicule par une barre de liaison dont une première extrémité est articulée par rapport à la structure du véhicule en un point situé à proximité de l'axe transversal de pivotement des bras longitudinaux, et qui s'étend en direction du support en formant un angle par rapport à l'axe transversal de pivotement des bras longitudinaux
- la première extrémité de la barre de liaison est articulée sur la structure du véhicule autour d'un axe confondu avec l'axe transversal de pivotement des bras longitudinaux
- chaque support de roue est monté pivotant sur le bras longitudinal correspondant autour d'un axe sensiblement vertical, la seconde extrémité de chaque barre de liaison est articulée sur le support de roue en un point du support décalé longitudinalement par rapport à l'axe vertical de pivotement du support sur son bras longitudinal, et la première extrémité de la barre de liaison est reliée à un élément d'un mécanisme de direction qui est susceptible de se déplacer transversalement par rapport à la structure du véhicule ;;
- il comporte une traverse fixée à la structure du véhicule sur laquelle les bras longitudinaux sont montés pivotants
- les paliers de support du tronçon central de la barre stabilisatrice sont fixés sur la traverse
- la première extrémité de chacune des barres de liaison est montée articulée sur la traverse.According to other features of the invention
- The central section of the stabilizer bar is supported on the vehicle structure by two bearings arranged substantially in the vicinity of the opposite ends of the central section of the stabilizer bar
- each wheel support is connected to the vehicle structure by a substantially vertical telescopic shock absorber, the lower end of which is connected to the wheel support by means of an articulation with an axis substantially parallel to the transverse axis of pivoting of the longitudinal arms
- Each support is connected to the vehicle structure by a connecting bar, a first end of which is articulated with respect to the vehicle structure at a point located near the transverse pivot axis of the longitudinal arms, and which extends towards the support at an angle to the transverse pivot axis of the longitudinal arms
- the first end of the connecting bar is articulated on the vehicle structure around an axis coincident with the transverse axis of pivoting of the longitudinal arms
- each wheel support is pivotally mounted on the corresponding longitudinal arm around a substantially vertical axis, the second end of each link bar is articulated on the wheel support at a point on the support offset longitudinally relative to the vertical axis pivoting of the support on its longitudinal arm, and the first end of the connecting bar is connected to an element of a steering mechanism which is capable of moving transversely relative to the structure of the vehicle;
- It comprises a cross member fixed to the structure of the vehicle on which the longitudinal arms are pivotally mounted
- the support bearings of the central section of the stabilizer bar are fixed on the cross-member
- The first end of each of the connecting bars is mounted articulated on the crosspiece.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée qui va suivre pour la compréhension de laquelle on se reportera aux dessins annexés dans lesquels
- La figure 1 est une vue schématique en perspective d'un premier mode de réalisation d'un train arrière à bras tirés conforme aux enseignements de l'invention ; et
- la figure 2 est une vue similaire à celle de la figure 1 illustrant un second mode de réalisation d'un train arrière à bras tirés conforme aux enseignements de l'invention.Other characteristics and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the accompanying drawings in which
- Figure 1 is a schematic perspective view of a first embodiment of a rear axle with drawn arms according to the teachings of the invention; and
- Figure 2 is a view similar to that of Figure 1 illustrating a second embodiment of a rear axle with drawn arms according to the teachings of the invention.

Sur ces figures, les composants identiques ou équivalents appartenant respectivement aux deux côtés droit et gauche de la suspension sont désignés par les mêmes chiffres de référence indicés D et G. In these figures, the identical or equivalent components belonging respectively to the two right and left sides of the suspension are designated by the same reference numerals, indexed D and G.

Le train arrière 10 schématisé sur la figure 1 comporte une traverse en tôle mécano-soudée 12 dont les extrémités comportent des brides 14G, 14D pour sa fixation sous le plancher de la partie arrière de la structure de la caisse d'un véhicule automobile (non représenté). The rear axle 10 shown diagrammatically in FIG. 1 comprises a crosspiece of mechanically welded sheet metal 12 the ends of which include flanges 14G, 14D for its fixing under the floor of the rear part of the body structure of a motor vehicle (not represented).

Le train arrière 10 comporte deux bras longitudinaux 16G et 16D qui s'étendent longitudinalement de part et d'autre des extrémités opposées de la traverse 12. The rear axle 10 comprises two longitudinal arms 16G and 16D which extend longitudinally on either side of the opposite ends of the cross-member 12.

Chaque bras longitudinal 16G, 16D est monté pivotant, par une extrémité 18G, 18D sur la traverse 12 de manière à pivoter autour d'un axe transversal Y-Y. Each longitudinal arm 16G, 16D is pivotally mounted, by one end 18G, 18D on the cross member 12 so as to pivot around a transverse axis Y-Y.

L'extrémité libre 20G, 20D de chaque bras longitudinal 16G, 16D est reliée à un support de roue 22G. B support de roue 22G schématisé à la figure 1 est une pièce en forme générale de plaque qui s'étend dans un plan vertical sensiblement parallèle à celui dans lequel pivote le bras longitudinal 16G et dont la partie inférieure est fixée à l'extrémité 20G du bras longitudinal 16G. The free end 20G, 20D of each longitudinal arm 16G, 16D is connected to a wheel support 22G. B wheel support 22G shown diagrammatically in FIG. 1 is a part in the general form of a plate which extends in a vertical plane substantially parallel to that in which the longitudinal arm 16G pivots and the lower part of which is fixed to the end 20G of the longitudinal arm 16G.

Le support 22G reçoit à rotation une roue 24G. The support 22G receives in rotation a wheel 24G.

La partie supérieure du support 22G comporte une fixation 26G pour le montage pivotant, autour d'un axe
V-V parallèle à l'axe transversal Y-Y, de l'extrémité inférieure 28G d'un amortisseur 30G qui s'étend sensiblement selon la direction verticale et qui contribue au maintien sensiblement vertical du plan moyen de la roue.The upper part of the support 22G has a fixing 26G for the pivoting mounting, around an axis
VV parallel to the transverse axis YY, of the lower end 28G of a damper 30G which extends substantially in the vertical direction and which contributes to the substantially vertical maintenance of the mean plane of the wheel.

Chacun des bras longitudinaux 16G, 16D est équipé d'une barre de torsion 32G, 32D dont une extrémité 34G, 34D est bridée sur une face supérieure, inférieure respectivement, du bras longitudinal correspondant 16G, 16D. Each of the longitudinal arms 16G, 16D is equipped with a torsion bar 32G, 32D, one end 34G, 34D of which is clamped on an upper, lower face respectively, of the corresponding longitudinal arm 16G, 16D.

L'autre extrémité 36D, 36G de la barre de torsion 32G, 32D est bridée sur la plaque verticale de la bride 14D, 14G de manière que, selon une conception connue, chacune des barres de torsion travaille élastiquement pour rappeler un bras longitudinal dans sa position de repos, par rapport à l'axe transversal Y-Y, illustrée sur la figure 1. The other end 36D, 36G of the torsion bar 32G, 32D is clamped on the vertical plate of the flange 14D, 14G so that, according to a known design, each of the torsion bars works elastically to recall a longitudinal arm in its rest position, relative to the transverse axis YY, illustrated in FIG. 1.

Conformément aux enseignements de l'invention, le train avant 10 comporte une barre stabilisatrice antidévers 38. In accordance with the teachings of the invention, the front axle 10 includes an anti-roll stabilizer bar 38.

La barre stabilisatrice 38 comporte un tronçon central 40 qui est supporté sur la traverse 12 au moyen de deux paliers de support 42G et 42D qui sont fixés sur la face arrière 44 de la traverse 12. The stabilizer bar 38 has a central section 40 which is supported on the cross-member 12 by means of two support bearings 42G and 42D which are fixed to the rear face 44 of the cross-member 12.

Les paliers 42G et 42D sont écartés l'un de l'autre transversalement de manière à disposer d'un tronçon central de grande longueur, et ils sont agencés de manière que l'axe commun aux deux paliers et au tronçon central 40 soit aligné avec l'axe transversal Y-Y de pivotement des bras longitudinaux 16G, 16D.  The bearings 42G and 42D are separated from one another transversely so as to have a central section of great length, and they are arranged so that the axis common to the two bearings and to the central section 40 is aligned with the transverse axis YY of pivoting of the longitudinal arms 16G, 16D.

La barre stabilisatrice 38 comporte également deux tronçons d'extrémité 46G, 46D dont chacun relie respectivement une extrémité 48G, 48D du tronçon central 40 à l'extrémité libre 20G, 20D du bras longitudinal correspondant 16G, 16D. The stabilizer bar 38 also comprises two end sections 46G, 46D each of which connects respectively one end 48G, 48D of the central section 40 to the free end 20G, 20D of the corresponding longitudinal arm 16G, 16D.

Chacun des tronçons d'extrémié 46G, 46D forme un angle par rapport au tronçon central 40 et s'étend sensiblement dans le plan horizontal commun aux bras longitudinaux et à la traverse. Each of the end sections 46G, 46D forms an angle with respect to the central section 40 and extends substantially in the horizontal plane common to the longitudinal arms and to the cross member.

L'extrémité libre 50G de chaque tronçon d'extrémité 46G, 46D de la barre stabilisatrice 38 est fixée sur la face intérieure correspondante de l'extrémité 20G, 20D du bras longitudinal correspondant de manière à, selon une technique connue, assurer une fonction stabilisatrice antidévers pour le train arrière à bras tirés. The free end 50G of each end section 46G, 46D of the stabilizing bar 38 is fixed to the corresponding inner face of the end 20G, 20D of the corresponding longitudinal arm so as, according to a known technique, to provide a stabilizing function anti-tilt for the rear axle with arms pulled.

On décrira maintenant le mode de réalisation illustré à la figure 2 sur laquelle des éléments identiques ou similaires à ceux illustrés à la figure 1 sont désignés par les mêmes chiffres de référence. The embodiment illustrated in FIG. 2 will now be described in which elements identical or similar to those illustrated in FIG. 1 are designated by the same reference numbers.

Dans ce second mode de réalisation, les amortisseurs verticaux sont supprimés de façon à permettre l'agencement du train arrière 10 sous un plancher dit plat. In this second embodiment, the vertical dampers are eliminated so as to allow the arrangement of the rear axle 10 under a so-called flat floor.

Selon un agencement connu, non représenté sur la figure 2, un amortisseur sensiblement horizontal est accroché sur un point du bras ou du support de roue proche de l'axe de rotation de la roue. According to a known arrangement, not shown in FIG. 2, a substantially horizontal damper is hooked on a point on the arm or of the wheel support close to the axis of rotation of the wheel.

Le guidage des roues 24G dans le plan vertical est complété au moyen d'une barre de liaison 52G, 52D. The guiding of the wheels 24G in the vertical plane is completed by means of a connecting bar 52G, 52D.

Une première extrémité 54G, 54D de la barre de liaison est articulée sur la traverse 12 dans un dispositif formant palier 56 de manière à être montée pivotante autour d'un axe d'articulation qui est aligné avec l'axe transversal Y-Y de pivotement des bras longitudinaux 16G, 16D ainsi qu'avec l'axe des paliers 42G et 42D de support du tronçon central 40 de la barre stabilisatrice antidévers 38. A cet effet, le tronçon central 40 comporte une partie coudée pour permettre son passage sous le palier 56 d'articulation des extrémités 54G, 54D des barres de liaison 52G, 52D. A first end 54G, 54D of the connecting bar is articulated on the crosspiece 12 in a bearing device 56 so as to be pivotally mounted about an articulation axis which is aligned with the transverse axis YY of pivoting of the arms longitudinal 16G, 16D as well as with the axis of the bearings 42G and 42D for supporting the central section 40 of the anti-roll stabilizer bar 38. For this purpose, the central section 40 has a bent portion to allow its passage under the bearing 56 d articulation of the ends 54G, 54D of the connecting bars 52G, 52D.

Chaque barre de liaison 52G, 52D s'étend, en formant un angle par rapport à l'axe transversal Y-Y, en direction du support de roue correspondant 22G. L'autre extrémité 58G, 58D de la barre de liaison 52G, 52D est articulée sur la partie supérieure du support de roue correspondant. Each link bar 52G, 52D extends, at an angle to the transverse axis Y-Y, in the direction of the corresponding wheel support 22G. The other end 58G, 58D of the link bar 52G, 52D is articulated on the upper part of the corresponding wheel support.

Selon une variante, qui n est pas illustrée sur la figure 2, il est possible de prévoir un axe supplémentaire d'articulation pour chaque support sur le bras longitudinal correspondant 16G, 16D de manière à profiter de la présence de la barre de liaison 52G, 52d pour modifier l'épure de suspension du train arrière, dans un sens ou dans un autre, en décalant son point d'articulation 54G, 54D sur la traverse par rapport à l'axe transversal Y-Y de pivotement des bras longitudinaux. I1 est ainsi possible de régler le pincement et/ou le carrossage des roues arrière. According to a variant, which is not illustrated in FIG. 2, it is possible to provide an additional articulation axis for each support on the corresponding longitudinal arm 16G, 16D so as to take advantage of the presence of the connecting bar 52G, 52d to modify the suspension drawing of the rear axle, in one direction or another, by shifting its point of articulation 54G, 54D on the cross member with respect to the transverse axis YY of pivoting of the longitudinal arms. It is thus possible to adjust the toe-in and / or the camber of the rear wheels.

Si chaque support peut pivoter par rapport au bras longitudinal autour d'un axe sensiblement vertical et si le point d'articulation de ce support avec le bras de liaison correspondant 52G, 52D est décalé longitudinalement par rapport à cet axe vertical de pivotement du support, il devient alors possible de réaliser un mécanisme de direction pour les roues arrière, notamment dans le cas d'un véhicule à quatre roues directrices. If each support can pivot relative to the longitudinal arm about a substantially vertical axis and if the point of articulation of this support with the corresponding link arm 52G, 52D is offset longitudinally relative to this vertical pivot axis of the support, it then becomes possible to produce a steering mechanism for the rear wheels, in particular in the case of a vehicle with four steered wheels.

A cet effet, les extrémités 54G, 54D des barres de liaison 52G, 52D peuvent être articulées sur un mécanisme 56 qui est monté mobile transversalement sur la traverse 12 et qui est relié à un mécanisme de direction. To this end, the ends 54G, 54D of the connecting bars 52G, 52D can be articulated on a mechanism 56 which is mounted to move transversely on the cross-member 12 and which is connected to a steering mechanism.

L'invention n'est pas limitée aux modes de réalisation dans lesquels le train arrière comporte une traverse 12, les différents composants du train arrière pouvant être fixés et/ou articulés directement sur des éléments constitutifs de la structure de la caisse du véhicule.  The invention is not limited to the embodiments in which the rear axle comprises a cross member 12, the various components of the rear axle being able to be fixed and / or articulated directly on elements constituting the structure of the vehicle body.

Claims (9)

REVENDICATIONS 1. Train arrière (10) de véhicule automobile du type dans lequel chacune des deux roues (24G) est portée par un support (22G) relié à une première extrémité (20G, 20D) d'un bras longitudinal (16G, 16D) dont la seconde extrémité (18G, 18D) est montée pivotante autour d'un axe transversal (Y-Y) du véhicule, et du type comportant une barre stabilisatrice antidévers (38) constituée d'un tronçon central (40) qui est parallèle à l'axe transversal (Y-Y) de pivotement des bras et qui est supportée par la structure du véhicule au moyen dVau moins un palier, et de deux tronçons d'extrémité (46G, 46D) dont chacun relie une extrémité (48G, 48D) du tronçon central (40) à l'un (16G, 16D) des bras en formant un angle par rapport au tronçon central (40), caractérisé en ce que l'axe du palier (42G, 42D) de support du tronçon central (40) de la barre stabilisatrice (38) est aligné avec l'axe transversal (Y-Y) de pivotement des bras longitudinaux. 1. Rear axle (10) of a motor vehicle of the type in which each of the two wheels (24G) is carried by a support (22G) connected to a first end (20G, 20D) of a longitudinal arm (16G, 16D) of which the second end (18G, 18D) is pivotally mounted around a transverse axis (YY) of the vehicle, and of the type comprising an anti-roll stabilizer bar (38) consisting of a central section (40) which is parallel to the axis transverse (YY) pivoting of the arms and which is supported by the vehicle structure by means of at least one bearing, and two end sections (46G, 46D) each of which connects one end (48G, 48D) of the central section ( 40) to one (16G, 16D) of the arms forming an angle with respect to the central section (40), characterized in that the axis of the bearing (42G, 42D) for supporting the central section (40) of the stabilizer bar (38) is aligned with the transverse axis (YY) of pivoting of the longitudinal arms. 2. Train arrière selon la revendication 1, caractérisé en ce que le tronçon central (40) de la barre stabilisatrice est supporté sur la structure du véhicule (12) par deux paliers (42G, 42D) agencés sensiblement au voisinage des extrémités du tronçon central (40) de la barre stabilisatrice. 2. Rear axle according to claim 1, characterized in that the central section (40) of the stabilizer bar is supported on the vehicle structure (12) by two bearings (42G, 42D) arranged substantially in the vicinity of the ends of the central section (40) of the stabilizer bar. 3. Train arrière selon l'une des revendications 1 ou 2, caractérisé en ce que chaque support de roue (22G) est relié à la structure du véhicule par un amortisseur téléscopique sensiblement vertical (30G, 30D) dont l'extrémité inférieure (28G) est reliée au support de roue (22G) au moyen d'une articulation d'axe (V-V) sensiblement parallèle à l'axe transversal de pivotement des bras longitudinaux. 3. Rear axle according to one of claims 1 or 2, characterized in that each wheel support (22G) is connected to the structure of the vehicle by a substantially vertical telescopic damper (30G, 30D) whose lower end (28G ) is connected to the wheel support (22G) by means of an axis joint (VV) substantially parallel to the transverse axis of pivoting of the longitudinal arms. 4. Train arrière selon la revendication 2, caractérisé en ce que chaque support (22G) est relié à la structure du véhicule par une barre de liaison (52G, 52D) dont une première extrémité (54G, 54D) est articulée (56) par rapport à la structure du véhicule en un point situé à proximité de l'axe transversal de pivotement (Y-Y) des bras longitudinaux, et qui s'étend en direction du support (22G) en formant un angle par rapport à l'axe transversal de pivotement (Y-Y) des bras longitudinaux. 4. Rear axle according to claim 2, characterized in that each support (22G) is connected to the vehicle structure by a connecting bar (52G, 52D) of which a first end (54G, 54D) is articulated (56) by relative to the structure of the vehicle at a point located near the transverse pivot axis (YY) of the longitudinal arms, and which extends in the direction of the support (22G) at an angle to the transverse axis of pivoting (YY) of the longitudinal arms. 5. Train arrière selon la revendication 4, caractérisé en ce que la première extrémité (54G, 54D) de la barre de liaison est articulée sur la structure du véhicule autour d'un axe aligné avec l'axe transversal de pivotement (Y-Y) des bras longitudinaux. 5. Rear axle according to claim 4, characterized in that the first end (54G, 54D) of the connecting bar is articulated on the structure of the vehicle about an axis aligned with the transverse pivot axis (YY) of the longitudinal arms. 6. Train arrière selon l'une des revendications 4 ou 5, caractérisé en ce que chaque support de roue est monté pivotant sur le bras longitudinal correspondant autour d'un axe sensiblement vertical, en ce que la seconde extrémité de chaque barre de liaison est articulée sur le support de roue en un point du support décalé longitudinalement par rapport à l'axe vertical de pivotement du support sur son bras longitudinal, et en ce que la première extrémité de la barre de liaison est reliée à un élément d'un mécanisme de direction qui est susceptible de se déplacer transversalement par rapport à la structure du véhicule. 6. rear axle according to one of claims 4 or 5, characterized in that each wheel support is pivotally mounted on the corresponding longitudinal arm around a substantially vertical axis, in that the second end of each connecting bar is articulated on the wheel support at a point on the support offset longitudinally with respect to the vertical pivot axis of the support on its longitudinal arm, and in that the first end of the connecting bar is connected to an element of a mechanism direction which is likely to move transversely with respect to the structure of the vehicle. 7. Train arrière selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte une traverse (12) fixée à la structure du véhicule et sur laquelle les bras longitudinaux sont montés pivotants. 7. Rear axle according to any one of the preceding claims, characterized in that it comprises a cross member (12) fixed to the structure of the vehicle and on which the longitudinal arms are pivotally mounted. 8. Train arrière selon la revendication 7, carac +térisé en ce que les paliers (42G, 42D) de support du tronçon central (40) de la barre stabilisatrice (38) sont fixés sur la traverse (12). 8. Rear axle according to claim 7, charac + terized in that the bearings (42G, 42D) for supporting the central section (40) of the stabilizer bar (38) are fixed on the cross-member (12). 9. Train arrière selon l'une des revendications 7 ou 8, prise en combinaison avec l'une quelconque des revendications 4 à 6, caractérisé en ce que la première extrémité (54G, 54D) de chacune des barres de liaison (52G, 52D) est montée articulée sur la traverse (12) ou sur un mécanisme de direction porté par celle-ci.  9. Rear axle according to one of claims 7 or 8, taken in combination with any one of claims 4 to 6, characterized in that the first end (54G, 54D) of each of the connecting bars (52G, 52D ) is mounted articulated on the crosspiece (12) or on a steering mechanism carried by the latter.
FR9303081A 1993-03-17 1993-03-17 REAR TRAIN OF MOTOR VEHICLE OF THE TYPE WITH ARMS. Expired - Fee Related FR2702709B1 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738190A1 (en) * 1995-09-05 1997-03-07 Peugeot Rear wheel suspension system for e.g. motor vehicles
FR2794689A1 (en) * 1999-06-10 2000-12-15 Peugeot Citroen Automobiles Sa Suspension, for vehicle axles, has single length of bar formed, with bends, into sections to form various functions, spring sections, anti-roll sections and longitudinal sections.
WO2006002991A1 (en) * 2004-07-07 2006-01-12 Gm Global Technology Operations, Inc. Rear axle structure for a motor vehicle with a twist-beam rear axle and an additional subframe, and twist-rear beam axle and subframe therefor
US7229086B1 (en) 2004-06-01 2007-06-12 Robert Louis Rogers Motor vehicle sway control assembly
WO2014177417A1 (en) * 2013-05-02 2014-11-06 Siemens Ag Österreich Wheelset bearing for the wheelset of a rail vehicle having internally mounted truck
ITMI20131197A1 (en) * 2013-07-17 2015-01-18 Iveco Spa SUSPENSION SYSTEM WITH TORSION BARS

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Publication number Priority date Publication date Assignee Title
FR1072946A (en) * 1952-04-04 1954-09-16 Porsche Kg Suspension for independent steered wheels of motor vehicles
FR1135801A (en) * 1954-08-17 1957-05-03 Auto Union Gmbh Suspension for vehicles including motor vehicles
US3037762A (en) * 1960-08-29 1962-06-05 Gen Motors Corp Trailing arm torsion bar suspension
DE2460093A1 (en) * 1974-12-19 1976-06-24 Volkswagenwerk Ag Independent torsion bar suspension - has one end secured on trailing arms and other end on chassis
FR2296541A1 (en) * 1974-12-31 1976-07-30 Chrysler France REAR SUSPENSION FOR MOTOR VEHICLES
EP0298929A1 (en) * 1987-07-07 1989-01-11 FIAT AUTO S.p.A. Rear suspension for motor vehicles
FR2645800A1 (en) * 1989-04-12 1990-10-19 Peugeot Set of wheels, particularly of the MacPherson type with a lower filtering cross-member

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1072946A (en) * 1952-04-04 1954-09-16 Porsche Kg Suspension for independent steered wheels of motor vehicles
FR1135801A (en) * 1954-08-17 1957-05-03 Auto Union Gmbh Suspension for vehicles including motor vehicles
US3037762A (en) * 1960-08-29 1962-06-05 Gen Motors Corp Trailing arm torsion bar suspension
DE2460093A1 (en) * 1974-12-19 1976-06-24 Volkswagenwerk Ag Independent torsion bar suspension - has one end secured on trailing arms and other end on chassis
FR2296541A1 (en) * 1974-12-31 1976-07-30 Chrysler France REAR SUSPENSION FOR MOTOR VEHICLES
EP0298929A1 (en) * 1987-07-07 1989-01-11 FIAT AUTO S.p.A. Rear suspension for motor vehicles
FR2645800A1 (en) * 1989-04-12 1990-10-19 Peugeot Set of wheels, particularly of the MacPherson type with a lower filtering cross-member

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738190A1 (en) * 1995-09-05 1997-03-07 Peugeot Rear wheel suspension system for e.g. motor vehicles
FR2794689A1 (en) * 1999-06-10 2000-12-15 Peugeot Citroen Automobiles Sa Suspension, for vehicle axles, has single length of bar formed, with bends, into sections to form various functions, spring sections, anti-roll sections and longitudinal sections.
US7229086B1 (en) 2004-06-01 2007-06-12 Robert Louis Rogers Motor vehicle sway control assembly
US7364175B2 (en) 2004-06-01 2008-04-29 Robert Rogers Motor vehicle sway control assembly
WO2006002991A1 (en) * 2004-07-07 2006-01-12 Gm Global Technology Operations, Inc. Rear axle structure for a motor vehicle with a twist-beam rear axle and an additional subframe, and twist-rear beam axle and subframe therefor
WO2014177417A1 (en) * 2013-05-02 2014-11-06 Siemens Ag Österreich Wheelset bearing for the wheelset of a rail vehicle having internally mounted truck
US9776646B2 (en) 2013-05-02 2017-10-03 Siemens Ag Österreich Wheelset bearing for the wheelset of a rail vehicle having an internally mounted truck
ITMI20131197A1 (en) * 2013-07-17 2015-01-18 Iveco Spa SUSPENSION SYSTEM WITH TORSION BARS

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