WO2009068781A2 - Motor vehicle rear suspension with toe-in control link - Google Patents

Motor vehicle rear suspension with toe-in control link Download PDF

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Publication number
WO2009068781A2
WO2009068781A2 PCT/FR2008/051994 FR2008051994W WO2009068781A2 WO 2009068781 A2 WO2009068781 A2 WO 2009068781A2 FR 2008051994 W FR2008051994 W FR 2008051994W WO 2009068781 A2 WO2009068781 A2 WO 2009068781A2
Authority
WO
WIPO (PCT)
Prior art keywords
arm
longitudinal
rear suspension
damper
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/FR2008/051994
Other languages
French (fr)
Other versions
WO2009068781A3 (en
Inventor
Pascal Ejarque
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.)
Renault SAS
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Publication of WO2009068781A2 publication Critical patent/WO2009068781A2/en
Publication of WO2009068781A3 publication Critical patent/WO2009068781A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • B60G15/06—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper
    • B60G15/07—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring and fluid damper the damper being connected to the stub axle and the spring being arranged around the damper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G13/00—Resilient suspensions characterised by arrangement, location or type of vibration dampers
    • B60G13/001—Arrangements for attachment of dampers
    • B60G13/005—Arrangements for attachment of dampers characterised by the mounting on the axle or suspension arm of the damper unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G3/00—Resilient suspensions for a single wheel
    • B60G3/18—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram
    • B60G3/20—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid
    • B60G3/22—Resilient suspensions for a single wheel with two or more pivoted arms, e.g. parallelogram all arms being rigid a rigid arm forming the axle housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G7/00—Pivoted suspension arms; Accessories thereof
    • B60G7/008—Attaching arms to unsprung part of vehicle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F1/00—Springs
    • F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
    • F16F1/38—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type
    • F16F1/3863—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers with a sleeve of elastic material between a rigid outer sleeve and a rigid inner sleeve or pin, i.e. bushing-type characterised by the rigid sleeves or pin, e.g. of non-circular cross-section
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/141—Independent suspensions with lateral arms with one trailing arm and one lateral arm only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/18—Multilink suspensions, e.g. elastokinematic arrangements
    • B60G2200/182—Multilink suspensions, e.g. elastokinematic arrangements with one longitudinal arm or rod and lateral rods
    • 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
    • B60G2202/12—Wound spring
    • 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
    • B60G2204/129—Damper mount on wheel suspension or knuckle
    • 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B60G2204/4102—Elastic mounts, e.g. bushings having a pin or stud extending perpendicularly to the axis of the elastic mount
    • 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
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B60G2204/4104—Bushings having modified rigidity in particular directions
    • 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
    • B60G2206/50—Constructional features of wheel supports or knuckles, e.g. steering knuckles, spindle attachments

Definitions

  • the invention relates to a rear suspension of a motor vehicle and a connecting rod adapted to such a suspension.
  • the invention relates to a rear suspension of a motor vehicle, comprising a longitudinal arm extending in the longitudinal direction of the vehicle, one end of which is articulated to the chassis of the vehicle and the other end of which is connected in such a way that articulated at the lower end of a damper assembly and suspension spring and at one end of a transverse arm relative to the longitudinal arm, the longitudinal arm carrying a wheel axle.
  • Such a suspension has the particular advantage of the rearward position of the vehicle, the damper assembly and suspension spring, which avoids reinforcing the wheel arch to support this set and lower the floor of the vehicle , which is particularly useful in the case of a utility vehicle.
  • the purpose of the present invention is to provide a rear suspension of the type described above, to control the nip (or parallelism) and the camber angle of the wheels, without adding a point of attachment to the vehicle frame.
  • the longitudinal arm comprises a fixed arm whose end is connected by a elastic articulation to a rod whose end opposite this elastic joint is connected to the damper.
  • the rod extends in a direction substantially parallel to the transverse arm.
  • the fixed arm has a curved shape, the concavity of this curvature being directed towards the rear end of the longitudinal arm.
  • This arrangement makes it possible to fix the fixed arm on the longitudinal arm at a sufficient distance from the lower hinge of the damper.
  • the base of the fixed arm is located between the wheel axle and the rear end of the longitudinal arm, the base of the arm is fixed on a bent part of the longitudinal arm, the concavity of the curvature of this part being directed outwards.
  • the invention also relates to a rod for a motor vehicle rear suspension, intended to connect a fixed arm of the longitudinal arm to the damper of a rear suspension according to the invention, the link comprising a first cylindrical opening adapted to be engaged on a cylindrical tenon carried by the fixed arm of the longitudinal arm and a second cylindrical opening adapted to be engaged on the body of the damper.
  • the first opening carries a rubber ring providing an elastic connection between the rod and the tenon of the fixed arm
  • the second opening carries a rubber ring or several annular rubber segments providing an elastic connection between the link and the body of the damper.
  • FIG. 1 is a perspective view of a motor vehicle rear suspension according to the invention
  • FIG. 2 is a longitudinal sectional view of the link of the suspension shown in FIG. 1;
  • FIG. 3 is a plan view of the link
  • FIG. 4 is a perspective view of the link
  • FIG. 5 is a side view of the link.
  • the rear suspension of a motor vehicle comprises a longitudinal arm 1 extending in the longitudinal direction of the vehicle.
  • One of the ends 1a of this arm 1 is articulated at 2 to the chassis of the vehicle and the other end Ib of the arm 1 is hingedly connected by virtue of an elastic articulation 16 at the lower end 4a of a damping assembly 4 and suspension spring 5 (strut) and at one end 7b of a transverse arm 7 relative to the longitudinal arm 1.
  • this longitudinal arm 1 carries a wheel axle 3.
  • the longitudinal arm 1 comprises a fixed arm 6 projecting upwards whose end 6a is connected by an elastic articulation to a connecting rod 8 of which the end opposite this elastic articulation is connected to the damper 4.
  • the link 8 comprises a first cylindrical opening 9 which is engaged (see FIG. 2) on a cylindrical post 10 carried by the end 6a of the fixed arm 6 and a second cylindrical opening 11 engaged on the body of the shock absorber 4.
  • the first opening 9 carries a rubber ring 12 providing an elastic connection between the rod 8 and the pin 10 of the fixed arm 6.
  • the second opening 1 1 carries a rubber ring or two annular rubber segments 13 as shown in FIGS. 3 and 4 providing an elastic connection between the connecting rod 8 and the body of the shock absorber 4.
  • FIG. 1 shows on the other hand that the rod 8 extends inwards in a direction substantially parallel to the transverse arm 7.
  • the fixed arm 6 has a curved shape, the concavity of this curvature being directed towards the rear end Ib of the longitudinal arm 1.
  • the base of the fixed arm 6 is located between the wheel axle 3 and the rear end Ib of the longitudinal arm 1.
  • the base of the arm 6 is fixed on a bent portion 15 of the longitudinal arm 1, the concavity of the curvature of this portion 15 being directed outwards.
  • This curvature makes it possible to position the end 6a of the arm at a distance from the damper 4 corresponding to the dimension of the rod 8.
  • the elastic links between the fixed arm 6, the rod 8 and the body of the damper 4 can filter the vibrations.
  • the existing connection between the longitudinal arm 1 and the body of the damper 4 makes it possible to control the pinch and the camber angle of the wheels throughout the range of movement of the various elements of the suspension.
  • the travel of link rod 8 at its connection with end 6a of fixed arm 6, which forms part of a sphere makes it possible to vary the camber angle and pinching in a positive manner for the behavior of the vehicle by modifying the hinge axis created by the front attachment point 2 of the longitudinal arm 1 and the elastic joint 16 which is at the foot of the damper 4.

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

Abstract

The invention relates to a motor vehicle rear suspension comprising a longitudinal arm (1) extending in the longitudinal direction of the vehicle, one of the ends (1a) of which arm is articulated to the vehicle chassis and the other end (1b) of which arm is connected in an articulated manner to the lower end (4a) of a damper (4)/suspension spring (5) assembly and to one end (7a) of a transverse arm (7) which extends transversely with respect to the longitudinal arm (1), this longitudinal arm (1) carrying a wheel axle (3), characterized in that the longitudinal arm (1) comprises a fixed arm (6) of which the end (6a) is connected by an elastic articulation to a link (8) of which the end opposed to this elastic articulation is connected to the damper (4). The invention also relates to a link (8) intended to connect a fixed arm of the longitudinal arm to the damper of a rear suspension according to the invention.

Description

Suspension arrière de véhicule automobile avec contrôle du pincement et du carrossage et biellette adaptée à une telle suspension. Rear suspension of a motor vehicle with pinch and camber control and rod adapted to such a suspension.

L'invention concerne une suspension arrière de véhicule automobile et une biellette adaptée à une telle suspension.The invention relates to a rear suspension of a motor vehicle and a connecting rod adapted to such a suspension.

Plus particulièrement, l'invention concerne une suspension arrière de véhicule automobile, comprenant un bras longitudinal s'étendant dans la direction longitudinale du véhicule, dont l'une des extrémités est articulée au châssis du véhicule et dont l'autre extrémité est reliée de façon articulée à l'extrémité inférieure d'un ensemble amortisseur et ressort de suspension et à une extrémité d'un bras transversal par rapport au bras longitudinal, ce bras longitudinal portant un essieu de roue.More particularly, the invention relates to a rear suspension of a motor vehicle, comprising a longitudinal arm extending in the longitudinal direction of the vehicle, one end of which is articulated to the chassis of the vehicle and the other end of which is connected in such a way that articulated at the lower end of a damper assembly and suspension spring and at one end of a transverse arm relative to the longitudinal arm, the longitudinal arm carrying a wheel axle.

Une telle suspension présente notamment l'avantage de reporter vers l'arrière du véhicule, l'ensemble amortisseur et ressort de suspension, ce qui permet d'éviter de renforcer le passage de roue pour supporter cet ensemble et d'abaisser le plancher du véhicule, ce qui est particulièrement utile dans le cas d'un véhicule utilitaire.Such a suspension has the particular advantage of the rearward position of the vehicle, the damper assembly and suspension spring, which avoids reinforcing the wheel arch to support this set and lower the floor of the vehicle , which is particularly useful in the case of a utility vehicle.

Afin d'obtenir un bon comportement routier d'un véhicule, il est nécessaire que la suspension arrière du véhicule permette de contrôler le pincement (ou parallélisme) et l'angle de carrossage des roues.In order to obtain a good road behavior of a vehicle, it is necessary that the rear suspension of the vehicle makes it possible to control the nip (or parallelism) and the camber angle of the wheels.

De telles suspensions sont par exemple décrites dans le documentSuch suspensions are for example described in the document

FR 2 695 595. Les suspensions décrites dans ce document présentent toutefois une structure différente de celle concernée par l'invention. Par ailleurs, le contrôle du pincement et de l'angle de carrossage d'une suspension est généralement obtenu au moyen d'un point de fixation sur le châssis du véhicule, par exemple par un bras reliant la suspension au châssis. Cet agencement nécessite toutefois de prévoir l'encombrement nécessaire à cette fixation sur la caisse, et éventuellement un renforcement du châssis au niveau de ce point de fixation.FR 2 695 595. The suspensions described in this document, however, have a different structure from that concerned by the invention. Furthermore, the control of the pinch and the camber angle of a suspension is generally obtained by means of a fixing point on the chassis of the vehicle, for example by an arm connecting the suspension to the chassis. This arrangement, however, requires to provide the space required for this fixing on the body, and possibly a reinforcement of the frame at this point of attachment.

Le but de la présente invention est de proposer une suspension arrière du type décrit ci-dessus, permettant de contrôler le pincement (ou parallélisme) et l'angle de carrossage des roues, sans rajout d'un point de fixation au châssis du véhicule.The purpose of the present invention is to provide a rear suspension of the type described above, to control the nip (or parallelism) and the camber angle of the wheels, without adding a point of attachment to the vehicle frame.

Ce but est atteint selon l'invention, grâce au fait que le bras longitudinal comporte un bras fixe dont l'extrémité est reliée par une articulation élastique à une biellette dont l'extrémité opposée à cette articulation élastique est reliée à l'amortisseur.This object is achieved according to the invention, thanks to the fact that the longitudinal arm comprises a fixed arm whose end is connected by a elastic articulation to a rod whose end opposite this elastic joint is connected to the damper.

Il existe ainsi grâce au bras fixe et à la biellette une liaison élastique entre le bras longitudinal et l'amortisseur qui permet de contrôler le pincement et l'angle de carrossage des roues.There is thus through the fixed arm and the connecting rod an elastic connection between the longitudinal arm and the damper which allows to control the pinch and camber angle of the wheels.

De préférence, la biellette s'étend dans une direction sensiblement parallèle au bras transversal.Preferably, the rod extends in a direction substantially parallel to the transverse arm.

De préférence également, le bras fixe a une forme courbée, la concavité de cette courbure étant dirigée vers l'extrémité arrière du bras longitudinal.Also preferably, the fixed arm has a curved shape, the concavity of this curvature being directed towards the rear end of the longitudinal arm.

Cette disposition permet de fixer le bras fixe sur le bras longitudinal à une distance suffisante de l'articulation inférieure de l'amortisseur.This arrangement makes it possible to fix the fixed arm on the longitudinal arm at a sufficient distance from the lower hinge of the damper.

Selon d'autres particularités de l'invention : - la base du bras fixe est située entre l'essieu de roue et l'extrémité arrière du bras longitudinal, la base du bras est fixée sur une partie coudée du bras longitudinal, la concavité de la courbure de cette partie étant dirigée vers l'extérieur. Ces dispositions permettent de positionner l'extrémité du bras fixe à une distance du corps de l'amortisseur correspondant à la dimension de la biellette.According to other features of the invention: the base of the fixed arm is located between the wheel axle and the rear end of the longitudinal arm, the base of the arm is fixed on a bent part of the longitudinal arm, the concavity of the curvature of this part being directed outwards. These arrangements make it possible to position the end of the fixed arm at a distance from the body of the damper corresponding to the dimension of the rod.

L'invention concerne également une biellette pour suspension arrière de véhicule automobile, destinée à relier un bras fixe du bras longitudinal à l'amortisseur d'une suspension arrière selon l'invention, la biellette comprenant une première ouverture cylindrique apte à être engagée sur un tenon cylindrique porté par le bras fixe du bras longitudinal et une seconde ouverture cylindrique apte à être engagée sur le corps de l'amortisseur. Selon des particularités avantageuses de l'invention, la première ouverture porte une bague en caoutchouc assurant une liaison élastique entre la biellette et le tenon du bras fixe et la seconde ouverture porte une bague en caoutchouc ou plusieurs segments annulaires en caoutchouc assurant une liaison élastique entre la biellette et le corps de l'amortisseur. II existe ainsi une liaison élastique entre la biellette, le bras fixe et l'amortisseur qui filtre les vibrations appliquées sur l'ensemble de la suspension.The invention also relates to a rod for a motor vehicle rear suspension, intended to connect a fixed arm of the longitudinal arm to the damper of a rear suspension according to the invention, the link comprising a first cylindrical opening adapted to be engaged on a cylindrical tenon carried by the fixed arm of the longitudinal arm and a second cylindrical opening adapted to be engaged on the body of the damper. According to advantageous features of the invention, the first opening carries a rubber ring providing an elastic connection between the rod and the tenon of the fixed arm and the second opening carries a rubber ring or several annular rubber segments providing an elastic connection between the link and the body of the damper. There is thus an elastic connection between the rod, the fixed arm and the damper which filters the vibrations applied to the entire suspension.

D'autres particularités et avantages de l'invention apparaîtront encore tout au long de la description ci-après.Other features and advantages of the invention will become apparent throughout the description below.

L'invention est maintenant décrite en référence aux dessins annexés, non limitatifs, dans lesquels :The invention is now described with reference to the appended non-limiting drawings, in which:

- la figure 1 est une vue en perspective d'une suspension arrière de véhicule automobile selon l'invention, - la figure 2 est une vue en coupe longitudinale de la biellette de la suspension représentée sur la figure 1 ,FIG. 1 is a perspective view of a motor vehicle rear suspension according to the invention; FIG. 2 is a longitudinal sectional view of the link of the suspension shown in FIG. 1;

- la figure 3 est une vue en plan de la biellette,FIG. 3 is a plan view of the link,

- la figure 4 est une vue en perspective de la biellette,FIG. 4 is a perspective view of the link,

- la figure 5 est une vue de côté de la biellette. Dans la réalisation représentée sur la figure 1 , la suspension arrière de véhicule automobile, comprend un bras longitudinal 1 s 'étendant dans la direction longitudinale du véhicule.- Figure 5 is a side view of the link. In the embodiment shown in Figure 1, the rear suspension of a motor vehicle comprises a longitudinal arm 1 extending in the longitudinal direction of the vehicle.

L'une des extrémités la de ce bras 1 est articulée en 2 au châssis du véhicule et l'autre extrémité Ib du bras 1 est reliée de façon articulée grâce à une articulation élastique 16 à l'extrémité inférieure 4a d'un ensemble amortisseur 4 et ressort de suspension 5 (jambe de force) et à une extrémité 7b d'un bras 7 transversal par rapport au bras longitudinal 1.One of the ends 1a of this arm 1 is articulated at 2 to the chassis of the vehicle and the other end Ib of the arm 1 is hingedly connected by virtue of an elastic articulation 16 at the lower end 4a of a damping assembly 4 and suspension spring 5 (strut) and at one end 7b of a transverse arm 7 relative to the longitudinal arm 1.

En outre, ce bras longitudinal 1 porte un essieu de roue 3. Conformément à l'invention, le bras longitudinal 1 comporte un bras fixe 6 faisant saillie vers le haut dont l'extrémité 6a est reliée par une articulation élastique à une biellette 8 dont l'extrémité opposée à cette articulation élastique est reliée à l'amortisseur 4.In addition, this longitudinal arm 1 carries a wheel axle 3. In accordance with the invention, the longitudinal arm 1 comprises a fixed arm 6 projecting upwards whose end 6a is connected by an elastic articulation to a connecting rod 8 of which the end opposite this elastic articulation is connected to the damper 4.

Comme montré par les figures 2 à 5, la biellette 8 comprend une première ouverture cylindrique 9 qui est engagée (voir figure 2) sur un tenon cylindrique 10 porté par l'extrémité 6a du bras fixe 6 et une seconde ouverture cylindrique 1 1 engagée sur le corps de l'amortisseur 4.As shown in FIGS. 2 to 5, the link 8 comprises a first cylindrical opening 9 which is engaged (see FIG. 2) on a cylindrical post 10 carried by the end 6a of the fixed arm 6 and a second cylindrical opening 11 engaged on the body of the shock absorber 4.

Ces deux ouvertures 9, 1 1 ont des axes perpendiculaires à la longueur de la biellette 8. La première ouverture 9 porte une bague 12 en caoutchouc assurant une liaison élastique entre la biellette 8 et le tenon 10 du bras fixe 6.These two openings 9, 1 1 have axes perpendicular to the length of the rod 8. The first opening 9 carries a rubber ring 12 providing an elastic connection between the rod 8 and the pin 10 of the fixed arm 6.

La seconde ouverture 1 1 porte une bague en caoutchouc ou deux segments annulaires 13 en caoutchouc comme montré par les figures 3 et 4 assurant une liaison élastique entre la biellette 8 et le corps de l'amortisseur 4.The second opening 1 1 carries a rubber ring or two annular rubber segments 13 as shown in FIGS. 3 and 4 providing an elastic connection between the connecting rod 8 and the body of the shock absorber 4.

Par ailleurs, la partie centrale 14 de la biellette 8 est évidée pour l'alléger. La figure 1 montre d'autre part que la biellette 8 s'étend vers l'intérieur dans une direction sensiblement parallèle au bras transversal 7.Moreover, the central portion 14 of the rod 8 is recessed to lighten it. FIG. 1 shows on the other hand that the rod 8 extends inwards in a direction substantially parallel to the transverse arm 7.

D'autre part, le bras fixe 6 a une forme courbée, la concavité de cette courbure étant dirigée vers l'extrémité arrière Ib du bras longitudinal 1.On the other hand, the fixed arm 6 has a curved shape, the concavity of this curvature being directed towards the rear end Ib of the longitudinal arm 1.

De plus, la base du bras fixe 6 est située entre l'essieu de roue 3 et l'extrémité arrière Ib du bras longitudinal 1.In addition, the base of the fixed arm 6 is located between the wheel axle 3 and the rear end Ib of the longitudinal arm 1.

En outre, la base du bras 6 est fixée sur une partie coudée 15 du bras longitudinal 1, la concavité de la courbure de cette partie 15 étant dirigée vers l'extérieur.In addition, the base of the arm 6 is fixed on a bent portion 15 of the longitudinal arm 1, the concavity of the curvature of this portion 15 being directed outwards.

Cette courbure permet de positionner l'extrémité 6a du bras à une distance de l'amortisseur 4 correspondant à la dimension de la biellette 8.This curvature makes it possible to position the end 6a of the arm at a distance from the damper 4 corresponding to the dimension of the rod 8.

Les liaisons élastiques existant entre le bras fixe 6, la biellette 8 et le corps de l'amortisseur 4 permettent de filtrer les vibrations.The elastic links between the fixed arm 6, the rod 8 and the body of the damper 4 can filter the vibrations.

La liaison existant entre le bras longitudinal 1 et le corps de l'amortisseur 4 permet de contrôler le pincement et l'angle de carrossage des roues dans toute la zone de débattement des différents éléments de la suspension. En particulier le débattement de la biellette 8 au niveau de sa liaison avec l'extrémité 6a du bras fixe 6, qui s'inscrit dans une sphère (voir flèches Fl , F2, F3, F4 sur figure 1) permet de faire varier l'angle de carrossage et le pincement d'une manière positive pour le comportement du véhicule en modifiant l'axe de charnière créé par le point de fixation avant 2 du bras longitudinal 1 et l'articulation élastique 16 qui se trouve au pied de l'amortisseur 4. The existing connection between the longitudinal arm 1 and the body of the damper 4 makes it possible to control the pinch and the camber angle of the wheels throughout the range of movement of the various elements of the suspension. In particular, the travel of link rod 8 at its connection with end 6a of fixed arm 6, which forms part of a sphere (see arrows F1, F2, F3, F4 in FIG. 1) makes it possible to vary the camber angle and pinching in a positive manner for the behavior of the vehicle by modifying the hinge axis created by the front attachment point 2 of the longitudinal arm 1 and the elastic joint 16 which is at the foot of the damper 4.

Claims

REVENDICATIONS 1. Suspension arrière de véhicule automobile, comprenant un bras longitudinal (1) s 'étendant dans la direction longitudinale du véhicule, dont l'une des extrémités (la) est articulée au châssis du véhicule et dont l'autre extrémité (Ib) est reliée de façon articulée à l'extrémité inférieure (4a) d'un ensemble amortisseur (4) et ressort de suspension (5) et à une extrémité (7a) d'un bras transversal (7) par rapport au bras longitudinal (1), ce bras longitudinal (1) portant un essieu de roue (3), caractérisée en ce que le bras longitudinal (1) comporte un bras fixe (6) dont l'extrémité (6a) est reliée par une articulation élastique à une biellette (8), dont l'extrémité opposée à cette articulation élastique est reliée à l'amortisseur (4).1. Rear suspension of a motor vehicle, comprising a longitudinal arm (1) extending in the longitudinal direction of the vehicle, one of whose ends (la) is articulated to the chassis of the vehicle and whose other end (Ib) is hingedly connected to the lower end (4a) of a damping assembly (4) and suspension spring (5) and at one end (7a) of a transverse arm (7) with respect to the longitudinal arm (1) , this longitudinal arm (1) carrying a wheel axle (3), characterized in that the longitudinal arm (1) comprises a fixed arm (6) whose end (6a) is connected by an elastic hinge to a link ( 8), the end opposite this elastic joint is connected to the damper (4). 2. Suspension arrière selon la revendication 1 , caractérisée en ce que la biellette (8) s'étend dans une direction sensiblement parallèle au bras transversal (7).2. Rear suspension according to claim 1, characterized in that the rod (8) extends in a direction substantially parallel to the transverse arm (7). 3. Suspension arrière selon l'une des revendications 1 ou 2, caractérisée en ce que le bras fixe (6) a une forme courbée, la concavité de cette courbure étant dirigée vers l'extrémité arrière (Ib) du bras longitudinal (1).3. Rear suspension according to one of claims 1 or 2, characterized in that the fixed arm (6) has a curved shape, the concavity of this curvature being directed towards the rear end (Ib) of the longitudinal arm (1) . 4. Suspension arrière selon l'une des revendications 1 à 3, caractérisée en ce que la base du bras fixe (6) est située entre l'essieu de roue (3) et l'extrémité arrière (Ib) du bras longitudinal (1).4. Rear suspension according to one of claims 1 to 3, characterized in that the base of the fixed arm (6) is located between the wheel axle (3) and the rear end (Ib) of the longitudinal arm (1). ). 5. Suspension arrière selon l'une des revendications 1 à 4, caractérisée en ce que la base du bras (6) est fixée sur une partie coudée (15) du bras longitudinal (1), la concavité de la courbure de cette partie (15) étant dirigée vers l'extérieur.5. Rear suspension according to one of claims 1 to 4, characterized in that the base of the arm (6) is fixed on a bent portion (15) of the longitudinal arm (1), the concavity of the curvature of this part ( 15) being directed outwards. 6. Biellette pour suspension arrière de véhicule automobile, destinée à relier un bras fixe du bras longitudinal (1) à l'amortisseur (4) d'une suspension arrière selon l'une des revendications 1 à 5, caractérisée en ce que la biellette (8) comprend une première ouverture cylindrique (9) apte à être engagée sur un tenon cylindrique (10) porté par le bras fixe du bras longitudinal et une seconde ouverture cylindrique (1 1) apte à être engagée sur le corps de l'amortisseur (4). 6. link for rear suspension of a motor vehicle, intended to connect a fixed arm of the longitudinal arm (1) to the damper (4) of a rear suspension according to one of claims 1 to 5, characterized in that the rod (8) comprises a first cylindrical opening (9) adapted to be engaged on a cylindrical post (10) carried by the fixed arm of the longitudinal arm and a second cylindrical opening (1 1) adapted to be engaged on the body of the damper (4). 7. Biellette selon la revendication 6, caractérisée en ce que la première ouverture (9) porte une bague en caoutchouc (12) assurant une liaison élastique entre la biellette (8) et le tenon (10). 7. Rod according to claim 6, characterized in that the first opening (9) carries a rubber ring (12) providing an elastic connection between the rod (8) and the tenon (10). 8. Biellette selon l'une des revendications 1 ou 2, caractérisée en ce que la seconde ouverture (11) porte une bague en caoutchouc ou plusieurs segments annulaires (13) en caoutchouc assurant une liaison élastique entre la biellette (8) et le corps de l'amortisseur (4). 8. Rod according to one of claims 1 or 2, characterized in that the second opening (11) carries a rubber ring or several annular segments (13) rubber providing an elastic connection between the rod (8) and the body of the damper (4).
PCT/FR2008/051994 2007-11-12 2008-11-05 Motor vehicle rear suspension with toe-in control link Ceased WO2009068781A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0707908 2007-11-12
FR0707908A FR2923415B1 (en) 2007-11-12 2007-11-12 REAR SUSPENSION OF A MOTOR VEHICLE COMPRISING AN ELASTIC ARTICULATION AND ELASTIC ARTICULATION ADAPTED TO SUCH A SUSPENSION

Publications (2)

Publication Number Publication Date
WO2009068781A2 true WO2009068781A2 (en) 2009-06-04
WO2009068781A3 WO2009068781A3 (en) 2009-07-23

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Application Number Title Priority Date Filing Date
PCT/FR2008/051994 Ceased WO2009068781A2 (en) 2007-11-12 2008-11-05 Motor vehicle rear suspension with toe-in control link

Country Status (2)

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FR (1) FR2923415B1 (en)
WO (1) WO2009068781A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107444043A (en) * 2017-08-08 2017-12-08 河南森地新能源汽车股份有限公司 Electric automobile back suspension device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3043092A1 (en) * 1980-11-14 1982-06-03 Bayerische Motoren Werke AG, 8000 München SINGLE-WHEEL SUSPENSION FOR NON-STEERED WHEELS OF MOTOR VEHICLES WITH A SPRING CHANGE, IN PARTICULAR OF PERSONAL VEHICLES
FR2695595B1 (en) 1992-09-15 1994-11-25 Renault Rear axle with independent wheels for motor vehicle.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107444043A (en) * 2017-08-08 2017-12-08 河南森地新能源汽车股份有限公司 Electric automobile back suspension device
CN107444043B (en) * 2017-08-08 2023-04-28 河南新中基交通科技发展有限公司 Rear suspension device of electric automobile

Also Published As

Publication number Publication date
FR2923415A1 (en) 2009-05-15
FR2923415B1 (en) 2010-02-26
WO2009068781A3 (en) 2009-07-23

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