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WO2013110871A2 - Device for securing a propulsion unit to the body shell of a vehicle using an anti-torque connection - Google Patents

Device for securing a propulsion unit to the body shell of a vehicle using an anti-torque connection Download PDF

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Publication number
WO2013110871A2
WO2013110871A2 PCT/FR2013/050067 FR2013050067W WO2013110871A2 WO 2013110871 A2 WO2013110871 A2 WO 2013110871A2 FR 2013050067 W FR2013050067 W FR 2013050067W WO 2013110871 A2 WO2013110871 A2 WO 2013110871A2
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
flexible blade
torque
fixed
powertrain
Prior art date
Application number
PCT/FR2013/050067
Other languages
French (fr)
Other versions
WO2013110871A3 (en
Inventor
Frederic RIGUEL
Philippe Martel
Original Assignee
Peugeot Citroen Automobiles 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 Peugeot Citroen Automobiles Sa filed Critical Peugeot Citroen Automobiles Sa
Publication of WO2013110871A2 publication Critical patent/WO2013110871A2/en
Publication of WO2013110871A3 publication Critical patent/WO2013110871A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1241—Link-type support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/12—Arrangement of engine supports
    • B60K5/1208—Resilient supports
    • B60K5/1216—Resilient supports characterised by the location of the supports relative to the motor or to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K5/00—Arrangement or mounting of internal-combustion or jet-propulsion units
    • B60K5/04—Arrangement or mounting of internal-combustion or jet-propulsion units with the engine main axis, e.g. crankshaft axis, transversely to the longitudinal centre line of the vehicle

Definitions

  • the present invention relates to a device for attaching a powertrain to the body of a vehicle, such as a motor vehicle.
  • a power train of a motor vehicle is fixed in an engine compartment of this vehicle generally at the front, but sometimes at the rear of the vehicle.
  • Figures 1 and 2 show an example of a device for attaching a power unit 1 to the body 2 of a motor vehicle.
  • the powertrain 1 has its upper part fixed between two longitudinal members 3 of the body 2 of the vehicle by two fixing points 4, 5 arranged towards the front of the vehicle along a Y-Y 'axis transverse to the longitudinal axis of the vehicle.
  • Each attachment point 4, 5 of the power train 1 to the spar 3 is known per se and does not have to be detailed except that it allows the suspension of the powertrain 1 to the body 2 of the vehicle.
  • the powertrain 1 is further secured at its lower part by an anti-torque connection means connecting the power unit 1 and the body 2 of the vehicle.
  • this anti-torque connection means is constituted by a substantially longitudinal link 6 whose front end 6a is fixed to the lower part of the power unit 1 by a hinge yoke 7 integral with the housing of this powertrain and the rear end 6b is hingedly attached to a rear cradle 8 integral with the two longitudinal members 3 transversely thereto.
  • the anti-torque link 6 makes it possible to take up or damp the oscillations or rotations of the power unit 1 around the transverse axis YY 'during phases of acceleration or braking of the vehicle or gearshift of this vehicle and thus compensate for the torque generated by the powertrain 1 of the vehicle.
  • the distance d between the axis YY 'and the longitudinal axis XX' passing through the two articulated ends 6a, 6b of the rod 6 occupying its rest position must to be as big as possible.
  • the present invention aims to overcome the above disadvantage by proposing a solution for implementing an anti-torque connection means connecting the powertrain and the body or chassis of a vehicle regardless of the architecture of the front axle of this vehicle.
  • the device for fixing a powertrain to the body of a vehicle comprising two attachment points of the upper part of the powertrain to the vehicle body so that the power unit extends transversely to the longitudinal axis of the vehicle and an anti connection means ⁇ torque connecting the lower part of the powertrain and the vehicle body
  • the counter-torque connection means comprises a substantially longitudinal bar one end of which is connected to the lower part of the power unit and a flexible blade fixed at both ends to the vehicle body so as to extend transversely to the longitudinal axis of the vehicle and whose central portion is rigidly secured to the other end of the anti-torque bar to allow the flexible blade to deform elastically direc longitudinal movement during oscillations of the powertrain around the transverse axis passing through
  • the flexible blade is rectilinear to its rest position.
  • the flexible blade is curved with convexity opposite to the power unit of the vehicle at its rest position.
  • the flexible blade is made of a metallic material, such as steel, or a composite material.
  • the other end of the anti-torque bar is fixed rigidly to the central portion of the flexible blade by two flanges enclosing this central portion.
  • the other end of the anti-torque bar is made in one piece with the flexible blade.
  • the end of the anti-torque bar is fixed rigidly to the lower part of the powertrain.
  • the end of the anti-torque bar is fixed to the lower part of the powertrain by means of a hinge yoke.
  • the ends of the flexible blade are fixed rigidly to the vehicle body or are fixed to the vehicle body by means of elastic hinges.
  • the elastic joints of the flexible blade are overmolded to this blade.
  • the upper part of the powertrain is fixed by its two attachment points respectively to two longitudinal members of the vehicle body and the two ends of the flexible blade are fixed to a cradle integral with the two longitudinal members.
  • the invention also relates to a vehicle, such as a motor vehicle, and which is characterized in that it comprises a device for fixing a powertrain to the body of the vehicle, as defined above.
  • FIG. 1 is a perspective view of a portion of a front axle of a motor vehicle anti-torque link connecting the powertrain and the vehicle body in accordance with the prior art;
  • - Figure 2 is a bottom view along the arrow II of Figure 1;
  • - Figure 3 is a bottom view of a portion of a front train of a motor vehicle having an anti-torque means of the invention connecting the power unit and the body of the vehicle;
  • FIG. 4 is a perspective view of the cradle assembly and anti-torque connection means of FIG. 3;
  • FIG. 5 is a perspective view of the anti-torque connection means of the invention.
  • FIG. 6 is a bottom view along the arrow VI of Figure 5;
  • FIG. 7 is a sectional view along the line VII-VII of Figure 6;
  • FIG. 8 is a perspective view of the anti-torque connection means according to another embodiment of the invention.
  • FIG. 9 is a view from below along the arrow IX of FIG. 8.
  • the reference 1 designates a power unit of a motor vehicle disposed in a motor compartment at the front of the vehicle.
  • the powertrain 1 of Figure 3 is disposed transversely to the longitudinal axis of the vehicle and has its upper part fixed between two longitudinal members 3 of the body 2 of the vehicle by two points of fixation, not shown, identical to the attachment points 4, 5 of FIGS. 1 and 2.
  • the front axle of FIG. 3 is of the type comprising a rear cradle 8 extending transversely to the longitudinal axis of the vehicle and which is fixed to the side members 3 of the body 2 of the vehicle either rigidly or by means of elastic wedges. .
  • the power train 1 also comprises an anti-torque connection means 10 connecting the part lower of this group and the cradle 8 of the body 2 of the vehicle.
  • the anti-torque connection means 10 comprises a substantially longitudinal bar 11 whose front end 11a is connected to the lower part of the power unit 1 via a hinge yoke 12 integral with the housing of this lower part, and a flexible blade 13 whose two opposite ends 13a are fixed to the cradle 8 so that the flexible blade 13 extends transversely to the longitudinal axis of the vehicle and the central portion 13b is rigidly secured to the rear end 11b of the anti-torque bar 11.
  • the two parallel flanges 14 of the yoke 12 are joined at their upper parts to form a vertical rigid plate 15 removably attached to the casing of the lower part of the power unit 1 by fixing screws, not shown.
  • the front end 11a of the anti-torque bar 11 is mounted around the fixed axis 16 of the yoke 12 via a resilient hinge 17 in the form of a sleeve.
  • the front end 11a of the anti-torque bar 11 can be rigidly fixed directly to the housing of the lower part of the power unit 1 by a fastening screw passing through this end and anchored in the housing.
  • the flexible anti-torque blade 13 in its rest position, is curved and convex opposite to the power unit 1 and directed towards the rear cradle 8 facing it.
  • the flexible blade 13 may be rectilinear to its rest position so as to extend perpendicular to the longitudinal axis of the vehicle.
  • the flexible blade may be made of metal, such as for example steel, or a composite material.
  • the rear end 11b of the anti-torque bar 11 is rigidly fixed to the central portion 13b of the flexible blade 13 by two attachment flanges, one 18 integral with the end 11b of the bar 11 and the other 19 removably attached to the flange 18 by fastening screws, not shown, so as to grip together the central portion 13b of the flexible blade 13.
  • the two ends 13a of the flexible blade 13 are fixed, either rigidly or by means of elastic hinges in the form of sleeves fitted in these two ends, respectively to two lateral legs 20 integral with the rear cradle 8 in the vicinity of its ends and extending downwardly beneath this cradle, as best shown in FIG. 4.
  • Each end 13a of the flexible blade 13 is shaped in a sleeve through which is engaged either a fixing screw anchored vertically in the part of lower end of the corresponding support foot 20 when each end 13a of the flexible blade 13 must be rigidly attached to the foot, or an elastic hinge sleeve in which is engaged a fixing screw anchored vertically in the lower end portion of the support leg 20.
  • the flexible blade 13 in the absence of the cradle 8, can be fixed by its two ends 13a to the two longitudinal members 3 of the body 2 of the vehicle or to any other body element of the vehicle allowing such fixation.
  • powertrain 1 will oscillate around the transverse axis YY 'passing through the two points upper attachment power train to the longitudinal members 3 of the body 2 of the vehicle. These oscillations are transmitted by the bar 11 to the flexible blade 13 which will deform elastically in the longitudinal direction of the vehicle to dampen these oscillations. Tests have shown that if the flexible blade 13 is made of composite material, it can better dampen the vibratory phenomena of the powertrain 1.
  • the rear end 11b of the bar 11 is formed in one piece with the central portion 13b of the flexible blade 13.
  • the embodiment in one piece of the bar 11 and the flexible blade 13 makes it possible to eliminate the rigid and removable fastening of the bar 11 to the central portion 13b of the blade 13 of the previous embodiment and thus to simplify this fixing and the mounting of the bar 11. It is thus sufficient to fix the bar 11 at the lower part of the power unit 1 is rigidly or through the hinge clevis 12 and press the elastic hinge means in the form of sleeves respectively in both ends 13a of the flexible blade 13 to fix it to the cradle 8 of the body 2 of the vehicle.
  • the resilient hinge means at the ends 13a of the blade 13 and in the front end 11a of the bar 11 can be overmolded directly in these ends, which eliminates a mounting operation of these elastic hinge means.
  • the elastic blade 13 in one piece with the bar 11 ensures the damping oscillations of the powertrain 1 to compensate for the torque generated by the latter as effectively as the first embodiment of the anti-theft connecting means. torque blade 13 and bar 11 described with reference to Figures 3 to 7.
  • the above-described fixing device of the invention has the main advantage of being able to provide an anti-torque coupling means of the powertrain 1 on trains before an architecture does not allow to implant a conventional anti-torque rod as described with reference to FIGS. 1 and 2.
  • This implantation problem arises in particular in the case of a Pseudo MacPherson type front axle with composite blade for which the movements of the blade prevent any implantation of a connecting rod.
  • classic anti-torque In other words, the anti connection means ⁇ torque bar and flexible blade of the invention may be set in virtually any train architecture front of a motor vehicle.
  • the above-described anti-torque connection means of the invention can also be applied to a transverse power unit located at the rear of a motor vehicle.
  • the anti-torque coupling means of the invention is of a relatively simple structure, compact and simple assembly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Motor Power Transmission Devices (AREA)

Abstract

The present invention relates to a device for securing a propulsion unit to the body shell of a vehicle by means of an anti-torque connection. According to the invention, the device is characterized in that the anti-torque connecting means (10) comprises a substantially longitudinal bar (11) one end (11a) of which is connected to the lower part of the propulsion unit (1) and a flexible leaf (13) fixed by its two ends (13a) to the body shell (2) of the vehicle so that it runs transversely to the longitudinal axis of the vehicle, and the central part (13b) of which is secured rigidly to the other end (11b) of the anti-torque bar (11) to allow the flexible leaf (13) to deform elastically in the longitudinal direction when the propulsion unit (1) oscillates about the transverse axis (Y-Y') passing through the two points of attachment of the propulsion unit (1) to the body shell (2) of the vehicle, so as to damp these oscillations. The invention finds an application in the automotive field.

Description

"DISPOSITIF DE FIXATION D'UN GROUPE MOTOPROPULSEUR A LA CAISSE D'UN VEHICULE A MOYEN DE LIAISON ANTI-COUPLE"  "DEVICE FOR FASTENING A MOTOR PUSH TO THE BODY OF A VEHICLE WITH MEANS OF ANTI-TORQUE BOND"
La présente invention concerne un dispositif de fixation d'un groupe motopropulseur à la caisse d'un véhicule, tel qu'un véhicule automobile. The present invention relates to a device for attaching a powertrain to the body of a vehicle, such as a motor vehicle.
Un groupe motopropulseur d'un véhicule automobile est fixé dans un compartiment moteur de ce véhicule généralement à l'avant, mais parfois à l'arrière du véhicule.  A power train of a motor vehicle is fixed in an engine compartment of this vehicle generally at the front, but sometimes at the rear of the vehicle.
Les figures 1 et 2 représentent un exemple de dispositif de fixation d'un groupe motopropulseur 1 à la caisse 2 d'un véhicule automobile.  Figures 1 and 2 show an example of a device for attaching a power unit 1 to the body 2 of a motor vehicle.
Ainsi, le groupe motopropulseur 1 a sa partie supérieure fixée entre deux longerons 3 de la caisse 2 du véhicule par deux points de fixation 4, 5 disposés vers l'avant du véhicule suivant un axe Y-Y' transversal à l'axe longitudinal du véhicule.  Thus, the powertrain 1 has its upper part fixed between two longitudinal members 3 of the body 2 of the vehicle by two fixing points 4, 5 arranged towards the front of the vehicle along a Y-Y 'axis transverse to the longitudinal axis of the vehicle.
Chaque point de fixation 4, 5 du groupe motopropulseur 1 au longeron 3 est connu en soi et n'a pas à être détaillé sinon qu'il permet la suspension du groupe motopropulseur 1 à la caisse 2 du véhicule.  Each attachment point 4, 5 of the power train 1 to the spar 3 is known per se and does not have to be detailed except that it allows the suspension of the powertrain 1 to the body 2 of the vehicle.
Le groupe motopropulseur 1 est en outre fixé à sa partie inférieure par un moyen de liaison anti-couple reliant le groupe motopropulseur 1 et la caisse 2 du véhicule .  The powertrain 1 is further secured at its lower part by an anti-torque connection means connecting the power unit 1 and the body 2 of the vehicle.
Plus précisément, ce moyen de liaison anti-couple est constitué par une biellette sensiblement longitudinale 6 dont l'extrémité avant 6a est fixée à la partie inférieure du groupe motopropulseur 1 par une chape d'articulation 7 solidaire du carter de ce groupe motopropulseur et l'extrémité arrière 6b est fixée de manière articulée à un berceau arrière 8 solidaire des deux longerons 3 transversalement à ceux-ci.  More specifically, this anti-torque connection means is constituted by a substantially longitudinal link 6 whose front end 6a is fixed to the lower part of the power unit 1 by a hinge yoke 7 integral with the housing of this powertrain and the rear end 6b is hingedly attached to a rear cradle 8 integral with the two longitudinal members 3 transversely thereto.
La biellette anti-couple 6 permet d'encaisser ou d'amortir les oscillations ou rotations du groupe motopropulseur 1 autour de l'axe transversal Y-Y' lors des phases d'accélération ou de freinage du véhicule ou de changement de rapport de vitesses de ce véhicule et de compenser ainsi le couple généré par le groupe motopropulseur 1 du véhicule. The anti-torque link 6 makes it possible to take up or damp the oscillations or rotations of the power unit 1 around the transverse axis YY 'during phases of acceleration or braking of the vehicle or gearshift of this vehicle and thus compensate for the torque generated by the powertrain 1 of the vehicle.
Pour compenser le plus efficacement possible le couple généré par le groupe motopropulseur 1, la distance d séparant l'axe Y-Y' et l'axe longitudinal X-X ' passant par les deux extrémités articulées 6a, 6b de la biellette 6 occupant sa position de repos doit être la plus grande possible.  To compensate as effectively as possible the torque generated by the powertrain 1, the distance d between the axis YY 'and the longitudinal axis XX' passing through the two articulated ends 6a, 6b of the rod 6 occupying its rest position must to be as big as possible.
Si ce dispositif de fixation connue donne entière satisfaction dans sa fonction anti-couple, il pose néanmoins des problèmes d'implantation pour des architectures de trains avant de véhicules automobiles ne comportant pas de berceaux ou d'éléments de caisse permettant la fixation de la biellette anti-couple à une distance la plus basse possible relativement à l'axe transversal Y-Y' de suspension de la partie supérieure du groupe motopropulseur à la caisse du véhicule ou comportant un berceau solidaire des longerons de la caisse du véhicule mais d'une hauteur relative trop élevée pour permettre la fixation de la biellette anti¬ couple dans les meilleures conditions possibles. Ce problème d'implantation se pose également pour une architecture de train avant du type Pseudo MacPherson à lame de ressort transversale de suspension en matériau composite dont les différentes positions n'autorisent pas la fixation de l'extrémité arrière de la biellette anti¬ couple dans la position la plus basse possible relativement à l'axe transversal Y-Y' de suspension du groupe motopropulseur à la caisse du véhicule. Although this known fastening device gives complete satisfaction in its anti-torque function, it nonetheless poses implantation problems for motor vehicle front train architectures that do not include cradles or body elements making it possible to fasten the connecting rod. anti-torque at the lowest possible distance relative to the transverse axis YY 'of suspension of the upper part of the powertrain to the vehicle body or having a cradle integral with the side members of the vehicle body but of a relative height too high to allow the attachment of the anti ¬ torque rod in the best possible conditions. This problem also arises implantation for a front type Pseudo MacPherson architecture being transverse leaf spring suspension composite material in which the different positions do not allow the attachment of the rear end of the rod anti ¬ couple in the lowest possible position relative to the transverse axis YY 'suspension of the powertrain to the vehicle body.
La présente invention a pour but de pallier l'inconvénient ci-dessus en proposant une solution permettant d'implanter un moyen de liaison anti-couple reliant le groupe motopropulseur et la caisse ou châssis d'un véhicule indépendamment de l'architecture du train avant de ce véhicule. A cet effet, selon l'invention, le dispositif de fixation d'un groupe motopropulseur à la caisse d'un véhicule, tel qu'un véhicule automobile, comprenant deux points de fixation de la partie supérieure du groupe motopropulseur à la caisse du véhicule de manière que le groupe motopropulseur s'étende transversalement à l'axe longitudinal du véhicule et un moyen de liaison anti¬ couple reliant la partie inférieure du groupe motopropulseur et la caisse du véhicule, est caractérisé en ce que le moyen de liaison anti-couple comprend une barre sensiblement longitudinale dont une extrémité est reliée à la partie inférieure du groupe motopropulseur et une lame flexible fixée par ses deux extrémités à la caisse du véhicule de manière à s'étendre transversalement à l'axe longitudinal du véhicule et dont la partie centrale est solidaire rigidement de l'autre extrémité de la barre anti-couple pour permettre à la lame flexible de se déformer élastiquement en direction longitudinale lors d'oscillations du groupe motopropulseur autour de l'axe transversal passant par les deux points de fixation du groupe motopropulseur à la caisse du véhicule, afin d'amortir ces oscillations. The present invention aims to overcome the above disadvantage by proposing a solution for implementing an anti-torque connection means connecting the powertrain and the body or chassis of a vehicle regardless of the architecture of the front axle of this vehicle. For this purpose, according to the invention, the device for fixing a powertrain to the body of a vehicle, such as a motor vehicle, comprising two attachment points of the upper part of the powertrain to the vehicle body so that the power unit extends transversely to the longitudinal axis of the vehicle and an anti connection means ¬ torque connecting the lower part of the powertrain and the vehicle body, is characterized in that the counter-torque connection means comprises a substantially longitudinal bar one end of which is connected to the lower part of the power unit and a flexible blade fixed at both ends to the vehicle body so as to extend transversely to the longitudinal axis of the vehicle and whose central portion is rigidly secured to the other end of the anti-torque bar to allow the flexible blade to deform elastically direc longitudinal movement during oscillations of the powertrain around the transverse axis passing through the two attachment points of the powertrain to the vehicle body, to dampen these oscillations.
Selon une variante de réalisation, la lame flexible est rectiligne à sa position de repos.  According to an alternative embodiment, the flexible blade is rectilinear to its rest position.
Selon une autre variante de réalisation, la lame flexible est courbée à convexité opposée au groupe motopropulseur du véhicule à sa position de repos.  According to another variant embodiment, the flexible blade is curved with convexity opposite to the power unit of the vehicle at its rest position.
La lame flexible est en un matériau métallique, tel que de l'acier, ou en un matériau composite.  The flexible blade is made of a metallic material, such as steel, or a composite material.
Selon une variante de réalisation, l'autre extrémité de la barre anti-couple est fixée rigidement à la partie centrale de la lame flexible par deux brides enserrant cette partie centrale.  According to an alternative embodiment, the other end of the anti-torque bar is fixed rigidly to the central portion of the flexible blade by two flanges enclosing this central portion.
Selon une autre variante de réalisation, l'autre extrémité de la barre anti-couple est réalisée en une seule pièce avec la lame flexible. Selon encore une autre variante de réalisation, l'extrémité de la barre anti-couple est fixée rigidement à la partie inférieure du groupe motopropulseur. According to another embodiment, the other end of the anti-torque bar is made in one piece with the flexible blade. According to yet another embodiment, the end of the anti-torque bar is fixed rigidly to the lower part of the powertrain.
Selon toujours une autre variante de réalisation, l'extrémité de la barre anti-couple est fixée à la partie inférieure du groupe motopropulseur par l'intermédiaire d'une chape d'articulation.  According to still another embodiment, the end of the anti-torque bar is fixed to the lower part of the powertrain by means of a hinge yoke.
Les extrémités de la lame flexible sont fixées rigidement à la caisse du véhicule ou sont fixées à la caisse du véhicule par l'intermédiaire d'articulations élastiques .  The ends of the flexible blade are fixed rigidly to the vehicle body or are fixed to the vehicle body by means of elastic hinges.
Avantageusement, les articulations élastiques de la lame flexible sont surmoulées à cette lame.  Advantageously, the elastic joints of the flexible blade are overmolded to this blade.
La partie supérieure du groupe motopropulseur est fixée par ses deux points de fixation respectivement à deux longerons de la caisse du véhicule et les deux extrémités de la lame flexible sont fixées à un berceau solidaire des deux longerons.  The upper part of the powertrain is fixed by its two attachment points respectively to two longitudinal members of the vehicle body and the two ends of the flexible blade are fixed to a cradle integral with the two longitudinal members.
L'invention vise également un véhicule, tel qu'un véhicule automobile, et qui est caractérisé en ce qu'il comprend un dispositif de fixation d'un groupe motopropulseur à la caisse de ce véhicule, tel que défini précédemment .  The invention also relates to a vehicle, such as a motor vehicle, and which is characterized in that it comprises a device for fixing a powertrain to the body of the vehicle, as defined above.
L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins annexés donnés uniquement à titre d'exemple illustrant deux modes de réalisation de l'invention et dans lesquels :  The invention will be better understood, and other objects, features, details and advantages thereof will appear more clearly in the explanatory description which follows with reference to the accompanying drawings given solely by way of example illustrating two embodiments. of the invention and in which:
- la figure 1 est une vue en perspective d'une partie d'un train avant d'un véhicule automobile à biellette anti-couple reliant le groupe motopropulseur et la caisse du véhicule conformément à l'art antérieur ;  - Figure 1 is a perspective view of a portion of a front axle of a motor vehicle anti-torque link connecting the powertrain and the vehicle body in accordance with the prior art;
- la figure 2 est une vue de dessous suivant la flèche II de la figure 1 ; - la figure 3 est une vue de dessous d'une partie d'un train avant d'un véhicule automobile comportant un moyen anti-couple de l'invention reliant le groupe motopropulseur et la caisse de ce véhicule ; - Figure 2 is a bottom view along the arrow II of Figure 1; - Figure 3 is a bottom view of a portion of a front train of a motor vehicle having an anti-torque means of the invention connecting the power unit and the body of the vehicle;
- la figure 4 est une vue en perspective de l'ensemble à berceau et moyen de liaison anti-couple de la figure 3 ;  FIG. 4 is a perspective view of the cradle assembly and anti-torque connection means of FIG. 3;
- la figure 5 est une vue en perspective du moyen de liaison anti-couple de l'invention ;  FIG. 5 is a perspective view of the anti-torque connection means of the invention;
- la figure 6 est une vue de dessous suivant la flèche VI de la figure 5 ;  - Figure 6 is a bottom view along the arrow VI of Figure 5;
- la figure 7 est une vue en coupe suivant la ligne VII-VII de la figure 6 ;  - Figure 7 is a sectional view along the line VII-VII of Figure 6;
- la figure 8 est une vue en perspective du moyen de liaison anti-couple suivant un autre mode de réalisation de l'invention ; et  FIG. 8 is a perspective view of the anti-torque connection means according to another embodiment of the invention; and
- la figure 9 est une vue de dessous suivant la flèche IX de la figure 8.  FIG. 9 is a view from below along the arrow IX of FIG. 8.
En se reportant aux figures 3 à 7, la référence 1 désigne un groupe motopropulseur d'un véhicule automobile disposé dans un compartiment moteur se trouvant à l'avant de ce véhicule.  Referring to Figures 3 to 7, the reference 1 designates a power unit of a motor vehicle disposed in a motor compartment at the front of the vehicle.
Comme pour le groupe motopropulseur 1 des figures 1 et 2, le groupe motopropulseur 1 de la figure 3 est disposé transversalement à l'axe longitudinal du véhicule et a sa partie supérieure fixée entre deux longerons 3 de la caisse 2 du véhicule par deux points de fixation, non représentés, identiques aux points de fixation 4, 5 des figures 1 et 2.  As for the powertrain 1 of Figures 1 and 2, the powertrain 1 of Figure 3 is disposed transversely to the longitudinal axis of the vehicle and has its upper part fixed between two longitudinal members 3 of the body 2 of the vehicle by two points of fixation, not shown, identical to the attachment points 4, 5 of FIGS. 1 and 2.
Le train avant de la figure 3 est du type comprenant un berceau arrière 8 s 'étendant transversalement à l'axe longitudinal du véhicule et qui est fixé aux longerons 3 de la caisse 2 du véhicule soit rigidement, soit par l'intermédiaire de cales élastiques.  The front axle of FIG. 3 is of the type comprising a rear cradle 8 extending transversely to the longitudinal axis of the vehicle and which is fixed to the side members 3 of the body 2 of the vehicle either rigidly or by means of elastic wedges. .
Le groupe motopropulseur 1 comprend également un moyen de liaison anti-couple 10 reliant la partie inférieure de ce groupe et le berceau 8 de la caisse 2 du véhicule . The power train 1 also comprises an anti-torque connection means 10 connecting the part lower of this group and the cradle 8 of the body 2 of the vehicle.
Selon l'invention, le moyen de liaison anti-couple 10 comprend une barre sensiblement longitudinale 11 dont l'extrémité avant lia est reliée à la partie inférieure du groupe motopropulseur 1 par l'intermédiaire d'une chape d'articulation 12 solidaire du carter de cette partie inférieure , et une lame flexible 13 dont les deux extrémités opposées 13a sont fixées au berceau 8 de façon que la lame flexible 13 s'étende transversalement à l'axe longitudinal du véhicule et la partie centrale 13b est solidaire rigidement de l'extrémité arrière 11b de la barre anti-couple 11.  According to the invention, the anti-torque connection means 10 comprises a substantially longitudinal bar 11 whose front end 11a is connected to the lower part of the power unit 1 via a hinge yoke 12 integral with the housing of this lower part, and a flexible blade 13 whose two opposite ends 13a are fixed to the cradle 8 so that the flexible blade 13 extends transversely to the longitudinal axis of the vehicle and the central portion 13b is rigidly secured to the rear end 11b of the anti-torque bar 11.
Les deux flasques parallèles 14 de la chape 12 se rejoignent à leurs parties supérieures pour former une plaque rigide verticale 15 amoviblement fixée au carter de la partie inférieure du groupe motopropulseur 1 par des vis de fixation, non représentées. L'extrémité avant lia de la barre anti-couple 11 est montée autour de l'axe fixe 16 de la chape 12 par l'intermédiaire d'une articulation élastique 17 en forme de manchon.  The two parallel flanges 14 of the yoke 12 are joined at their upper parts to form a vertical rigid plate 15 removably attached to the casing of the lower part of the power unit 1 by fixing screws, not shown. The front end 11a of the anti-torque bar 11 is mounted around the fixed axis 16 of the yoke 12 via a resilient hinge 17 in the form of a sleeve.
Selon une variante de réalisation non représentée, l'extrémité avant lia de la barre anti-couple 11 peut être rigidement fixée directement au carter de la partie inférieure du groupe motopropulseur 1 par une vis de fixation traversant cette extrémité et ancrée dans le carter .  According to an alternative embodiment not shown, the front end 11a of the anti-torque bar 11 can be rigidly fixed directly to the housing of the lower part of the power unit 1 by a fastening screw passing through this end and anchored in the housing.
La lame flexible anti-couple 13, à sa position de repos, est courbée et à convexité opposée au groupe motopropulseur 1 et dirigée vers le berceau arrière 8 en regard de celui-ci.  The flexible anti-torque blade 13, in its rest position, is curved and convex opposite to the power unit 1 and directed towards the rear cradle 8 facing it.
Selon une variante de réalisation non représentée, la lame flexible 13 peut être rectiligne à sa position de repos de manière à s'étendre perpendiculairement à l'axe longitudinal du véhicule.  According to an alternative embodiment not shown, the flexible blade 13 may be rectilinear to its rest position so as to extend perpendicular to the longitudinal axis of the vehicle.
La lame flexible peut être réalisée en métal, tel que par exemple de l'acier, ou en un matériau composite. L'extrémité arrière 11b de la barre anti-couple 11 est rigidement fixée à la partie centrale 13b de la lame flexible 13 par deux brides de fixation, l'une 18 solidaire de l'extrémité 11b de la barre 11 et l'autre 19 amoviblement fixée à la bride 18 par des vis de fixation, non représentées, de manière à enserrer entre elles la partie centrale 13b de la lame flexible 13. The flexible blade may be made of metal, such as for example steel, or a composite material. The rear end 11b of the anti-torque bar 11 is rigidly fixed to the central portion 13b of the flexible blade 13 by two attachment flanges, one 18 integral with the end 11b of the bar 11 and the other 19 removably attached to the flange 18 by fastening screws, not shown, so as to grip together the central portion 13b of the flexible blade 13.
Bien entendu, il est possible de prévoir tout autre moyen permettant de fixer rigidement l'extrémité 11b de la barre anti-couple 11 à la partie centrale 13b de la lame flexible 13.  Of course, it is possible to provide any other means for rigidly securing the end 11b of the anti-torque bar 11 to the central portion 13b of the flexible blade 13.
Les deux extrémités 13a de la lame flexible 13 sont fixées, soit rigidement, soit au moyen d'articulations élastiques en forme de manchons emmanchés dans ces deux extrémités, respectivement à deux pieds latéraux 20 solidaires du berceau arrière 8 au voisinage de ses extrémités et s 'étendant vers le bas sous ce berceau, comme cela ressort mieux de la figure 4. Chaque extrémité 13a de la lame flexible 13 est conformée en un fourreau au travers duquel est engagée soit une vis de fixation s ' ancrant verticalement dans la partie d'extrémité inférieure du pied de support correspondant 20 lorsque chaque extrémité 13a de la lame flexible 13 doit être fixée rigidement à ce pied, soit un manchon d'articulation élastique dans lequel est engagée une vis de fixation ancrée verticalement dans la partie d'extrémité inférieure du pied de support 20.  The two ends 13a of the flexible blade 13 are fixed, either rigidly or by means of elastic hinges in the form of sleeves fitted in these two ends, respectively to two lateral legs 20 integral with the rear cradle 8 in the vicinity of its ends and extending downwardly beneath this cradle, as best shown in FIG. 4. Each end 13a of the flexible blade 13 is shaped in a sleeve through which is engaged either a fixing screw anchored vertically in the part of lower end of the corresponding support foot 20 when each end 13a of the flexible blade 13 must be rigidly attached to the foot, or an elastic hinge sleeve in which is engaged a fixing screw anchored vertically in the lower end portion of the support leg 20.
Selon un mode de réalisation non représenté, en l'absence du berceau 8, la lame flexible 13 peut être fixée par ses deux extrémités 13a aux deux longerons 3 de la caisse 2 du véhicule ou à tout autre élément de caisse du véhicule permettant une telle fixation.  According to an embodiment not shown, in the absence of the cradle 8, the flexible blade 13 can be fixed by its two ends 13a to the two longitudinal members 3 of the body 2 of the vehicle or to any other body element of the vehicle allowing such fixation.
Lors de phases d'accélération ou de freinage du véhicule ou lors d'un changement de rapport de la boîte de vitesses de ce véhicule, le groupe motopropulseur 1 va se mettre à osciller autour de l'axe transversal Y-Y' passant par les deux points de fixation supérieurs du groupe motopropulseur aux longerons 3 de la caisse 2 du véhicule. Ces oscillations sont transmises par la barre 11 à la lame flexible 13 qui va se déformer élastiquement en direction longitudinale du véhicule pour amortir ces oscillations. Des essais ont montré que si la lame flexible 13 est réalisée en matériau composite, elle permet de mieux amortir les phénomènes vibratoires du groupe motopropulseur 1. During phases of acceleration or braking of the vehicle or during gearshift of this vehicle, powertrain 1 will oscillate around the transverse axis YY 'passing through the two points upper attachment power train to the longitudinal members 3 of the body 2 of the vehicle. These oscillations are transmitted by the bar 11 to the flexible blade 13 which will deform elastically in the longitudinal direction of the vehicle to dampen these oscillations. Tests have shown that if the flexible blade 13 is made of composite material, it can better dampen the vibratory phenomena of the powertrain 1.
Selon le mode de réalisation représenté aux figures 8 et 9, l'extrémité arrière 11b de la barre 11 est réalisée en une seule pièce avec la partie centrale 13b de la lame flexible 13. La réalisation en une seule pièce de la barre 11 et de la lame flexible 13 permet de supprimer la fixation rigide et amovible de la barre 11 à la partie centrale 13b de la lame 13 du mode de réalisation précédent et de simplifier ainsi cette fixation ainsi que le montage de la barre 11. Il suffit ainsi de fixer la barre 11 à la partie inférieure du groupe motopropulseur 1 soit rigidement, soit par l'intermédiaire de la chape d'articulation 12 et d'emmancher les moyens d'articulation élastiques sous forme de manchons respectivement dans les deux extrémités 13a de la lame flexible 13 pour la fixer au berceau 8 de la caisse 2 du véhicule.  According to the embodiment shown in Figures 8 and 9, the rear end 11b of the bar 11 is formed in one piece with the central portion 13b of the flexible blade 13. The embodiment in one piece of the bar 11 and the flexible blade 13 makes it possible to eliminate the rigid and removable fastening of the bar 11 to the central portion 13b of the blade 13 of the previous embodiment and thus to simplify this fixing and the mounting of the bar 11. It is thus sufficient to fix the bar 11 at the lower part of the power unit 1 is rigidly or through the hinge clevis 12 and press the elastic hinge means in the form of sleeves respectively in both ends 13a of the flexible blade 13 to fix it to the cradle 8 of the body 2 of the vehicle.
Selon une variante de réalisation de la lame flexible 13 réalisée en une seule pièce avec la barre 11, les moyens d'articulation élastiques aux extrémités 13a de la lame 13 et dans l'extrémité avant lia de la barre 11 peuvent être surmoulés directement dans ces extrémités, ce qui permet de supprimer une opération de montage de ces moyens d'articulation élastiques.  According to an alternative embodiment of the flexible blade 13 made in one piece with the bar 11, the resilient hinge means at the ends 13a of the blade 13 and in the front end 11a of the bar 11 can be overmolded directly in these ends, which eliminates a mounting operation of these elastic hinge means.
Autrement, la lame élastique 13 en une seule pièce avec la barre 11 assure l'amortissement des oscillations du groupe motopropulseur 1 pour compenser le couple généré par ce dernier de manière aussi efficace que le premier mode de réalisation du moyen de liaison anti- couple à lame 13 et barre 11 décrit en référence aux figures 3 à 7. Otherwise, the elastic blade 13 in one piece with the bar 11 ensures the damping oscillations of the powertrain 1 to compensate for the torque generated by the latter as effectively as the first embodiment of the anti-theft connecting means. torque blade 13 and bar 11 described with reference to Figures 3 to 7.
Le dispositif de fixation ci-dessus décrit de l'invention a pour avantage principal de pouvoir réaliser un moyen de liaison anti-couple du groupe motopropulseur 1 sur des trains avant d'une architecture ne permettant pas d'implanter une biellette anti-couple classique telle que décrite en liaison avec les figures 1 et 2. Ce problème d'implantation se pose en particulier dans le cas d'un train avant du type Pseudo MacPherson à lame composite pour lequel les débattements de la lame empêchent toute implantation d'une biellette anti-couple classique. En d'autres termes, le moyen de liaison anti¬ couple à barre et lame flexible de l'invention peut s'implanter pratiquement dans toute architecture de train avant d'un véhicule automobile. Il est à noter que le moyen de liaison anti-couple ci-dessus décrit de l'invention peut également s'appliquer à un groupe motopropulseur transversal se trouvant à l'arrière d'un véhicule automobile. Enfin, le moyen de liaison anti¬ couple de l'invention est d'une structure relativement simple, peu encombrante et d'un montage simple. The above-described fixing device of the invention has the main advantage of being able to provide an anti-torque coupling means of the powertrain 1 on trains before an architecture does not allow to implant a conventional anti-torque rod as described with reference to FIGS. 1 and 2. This implantation problem arises in particular in the case of a Pseudo MacPherson type front axle with composite blade for which the movements of the blade prevent any implantation of a connecting rod. classic anti-torque. In other words, the anti connection means ¬ torque bar and flexible blade of the invention may be set in virtually any train architecture front of a motor vehicle. It should be noted that the above-described anti-torque connection means of the invention can also be applied to a transverse power unit located at the rear of a motor vehicle. Finally, the anti-torque coupling means of the invention is of a relatively simple structure, compact and simple assembly.

Claims

R E V E N D I C A T I O N S
1. Dispositif de fixation d'un groupe motopropulseur (1) à la caisse (2) d'un véhicule, tel qu'un véhicule automobile, comprenant deux points de fixation (4,5) de la partie supérieure du groupe motopropulseur (1) à la caisse (2) du véhicule de manière que le groupe motopropulseur (1) s'étende transversalement à l'axe longitudinal du véhicule et un moyen de liaison anti-couple (10) reliant la partie inférieure du groupe motopropulseur (1) et la caisse (2) du véhicule, caractérisé en ce que le moyen de liaison anti-couple (10) comprend une barre sensiblement longitudinale (11) dont une extrémité (lia) est reliée à la partie inférieure du groupe motopropulseur (1) et une lame flexible (13) fixée par ses deux extrémités (13a) à la caisse (2) du véhicule de manière à s'étendre transversalement à l'axe longitudinal du véhicule et dont la partie centrale (13b) est solidaire rigidement de l'autre extrémité (11b) de la barre anti-couple (11) pour permettre à la lame flexible (13) de se déformer élastiquement en direction longitudinale lors d'oscillations du groupe motopropulseur (1) autour de l'axe transversal (Υ-Υ') passant par les deux points de fixation (4,5) du groupe motopropulseur (1) à la caisse (2) du véhicule, afin d'amortir ces oscillations. 1. Device for attaching a power unit (1) to the body (2) of a vehicle, such as a motor vehicle, comprising two attachment points (4,5) of the upper part of the power unit (1 ) to the body (2) of the vehicle so that the powertrain (1) extends transversely to the longitudinal axis of the vehicle and an anti-torque connection means (10) connecting the lower part of the powertrain (1) and the body (2) of the vehicle, characterized in that the anti-torque connection means (10) comprises a substantially longitudinal bar (11), one end (11a) of which is connected to the lower part of the power unit (1) and a flexible blade (13) fixed at its two ends (13a) to the body (2) of the vehicle so as to extend transversely to the longitudinal axis of the vehicle and whose central portion (13b) is firmly fixed to the other end (11b) of the anti-torque bar (11) to allow the flexible core (13) to deform elastically in the longitudinal direction during oscillations of the power unit (1) about the transverse axis (Υ-Υ ') passing through the two attachment points (4,5) of the power unit ( 1) to the body (2) of the vehicle, to dampen these oscillations.
2. Dispositif selon la revendication 1, caractérisé en ce que la lame flexible (13) est rectiligne à sa position de repos.  2. Device according to claim 1, characterized in that the flexible blade (13) is rectilinear to its rest position.
3. Dispositif selon la revendication 1, caractérisé en ce que la lame flexible (13) est courbée à convexité opposée au groupe motopropulseur (1) du véhicule à sa position de repos.  3. Device according to claim 1, characterized in that the flexible blade (13) is curved to convexity opposite to the power unit (1) of the vehicle at its rest position.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que la lame flexible (13) est en un matériau métallique, tel que de l'acier, ou en un matériau composite. 4. Device according to one of claims 1 to 3, characterized in that the flexible blade (13) is made of a metallic material, such as steel, or a composite material.
5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'autre extrémité (11b) de la barre anti-couple (11) est fixée rigidement à la partie centrale (13b) de la lame flexible (13) par deux brides (18,19) enserrant cette partie centrale. 5. Device according to one of claims 1 to 4, characterized in that the other end (11b) of the anti-torque bar (11) is rigidly attached to the central portion (13b) of the flexible blade (13) by two flanges (18,19) enclosing this central part.
6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que l'autre extrémité (11b) de la barre anti-couple (11) est réalisée en une seule pièce avec la lame flexible (13) .  6. Device according to one of claims 1 to 4, characterized in that the other end (11b) of the anti-torque bar (11) is formed in one piece with the flexible blade (13).
7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'extrémité (lia) de la barre anti-couple (11) est fixée rigidement à la partie inférieure du groupe motopropulseur (1) .  7. Device according to one of the preceding claims, characterized in that the end (11a) of the anti-torque bar (11) is fixed rigidly to the lower part of the powertrain (1).
8. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que l'extrémité (lia) de la barre anti¬ couple (11) est fixée à la partie inférieure du groupe motopropulseur (1) par l'intermédiaire d'une chape d'articulation (12). 8. Device according to one of claims 1 to 6, characterized in that the end (IIa) of the anti ¬ torque bar (11) is fixed to the lower part of the powertrain (1) by means of a hinge clevis (12).
9. Dispositif selon l'une des revendications précédentes, caractérisé en ce que les extrémités (13a) de la lame flexible (13) sont fixées rigidement à la caisse (2) du véhicule ou sont fixées à la caisse du véhicule par l'intermédiaire d'articulations élastiques.  9. Device according to one of the preceding claims, characterized in that the ends (13a) of the flexible blade (13) are rigidly fixed to the body (2) of the vehicle or are fixed to the vehicle body through elastic joints.
10. Dispositif selon la revendication 9, caractérisé en ce que les articulations élastiques sont surmoulées à la lame flexible (13) .  10. Device according to claim 9, characterized in that the elastic joints are overmolded to the flexible blade (13).
11. Dispositif selon l'une des revendications précédentes, caractérisé en ce que la partie supérieure du groupe motopropulseur (1) est fixée par ses deux points de fixation (4,5) respectivement à deux longerons (3) de la caisse (2) du véhicule et les deux extrémités (13a) de la lame flexible (13) sont fixées à un berceau (8) solidaire des deux longerons (3) .  11. Device according to one of the preceding claims, characterized in that the upper part of the powertrain (1) is fixed by its two attachment points (4,5) respectively to two longitudinal members (3) of the body (2). of the vehicle and the two ends (13a) of the flexible blade (13) are fixed to a cradle (8) integral with the two longitudinal members (3).
12. Véhicule, tel qu'un véhicule automobile, caractérisé en ce qu'il comprend un dispositif de fixation d'un groupe motopropulseur (1) à la caisse (2) de ce véhicule, et tel que défini dans l'une quelconque des revendications précédentes. Vehicle, such as a motor vehicle, characterized in that it comprises a device for fixing a power train (1) to the body (2) of this vehicle, and as defined in any one of the preceding claims.
PCT/FR2013/050067 2012-01-24 2013-01-11 Device for securing a propulsion unit to the body shell of a vehicle using an anti-torque connection WO2013110871A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1250643 2012-01-24
FR1250643A FR2985952B1 (en) 2012-01-24 2012-01-24 DEVICE FOR FASTENING A MOTOR PUSH TO THE BODY OF A VEHICLE BY MEANS OF ANTI-TORQUE BONDING

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WO2013110871A2 true WO2013110871A2 (en) 2013-08-01
WO2013110871A3 WO2013110871A3 (en) 2013-10-31

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FR3042464B1 (en) * 2015-10-16 2018-10-12 Peugeot Citroen Automobiles Sa FRONT SHOCK VEHICLE PROTECTION HAVING A TRANSVERSE BAR BEHIND THE MOTOR PUMPS GROUP

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JP4303568B2 (en) * 2003-11-20 2009-07-29 本田技研工業株式会社 Support device for power unit for vehicle
FR2946715B1 (en) * 2009-06-16 2011-05-20 Peugeot Citroen Automobiles Sa ANTI-TORQUE RELAY BEARING ON VEHICLE OIL PAN

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WO2013110871A3 (en) 2013-10-31
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