WO2007031687A1 - Device for fixing a motor vehicle element on the vehicle engine - Google Patents

Device for fixing a motor vehicle element on the vehicle engine Download PDF

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Publication number
WO2007031687A1
WO2007031687A1 PCT/FR2006/050880 FR2006050880W WO2007031687A1 WO 2007031687 A1 WO2007031687 A1 WO 2007031687A1 FR 2006050880 W FR2006050880 W FR 2006050880W WO 2007031687 A1 WO2007031687 A1 WO 2007031687A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
fixing
vehicle
housing
lug
Prior art date
Application number
PCT/FR2006/050880
Other languages
French (fr)
Inventor
Jérémy DUMENIL
Patrick Rudeau
Jean Claude Francois
Belen Lahaye
Original Assignee
Renault S.A.S.
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
Priority claimed from FR0509303A external-priority patent/FR2890708A1/en
Priority claimed from FR0554007A external-priority patent/FR2895362A3/en
Application filed by Renault S.A.S. filed Critical Renault S.A.S.
Publication of WO2007031687A1 publication Critical patent/WO2007031687A1/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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/22—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft
    • B60K17/24—Arrangements of mountings for shafting
    • 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 invention relates to the field of devices for fixing the components of a motor vehicle, on the engine of the vehicle.
  • the invention relates to devices for fixing an articulated transmission line of torque between a gearbox and a wheel of the vehicle.
  • a fixing lug has a shape adapted to the member to be fixed on the motor and generally comprises at least three attachment points of the lug on bosses of the housing, and fixing points with the member to be fixed.
  • Such a device has the disadvantage of multiplying the fastening means and the number of parts to be assembled.
  • the bracket represents a specific reference to manage, a specific cost and an incompressible time of assembly on the crankcase of the engine.
  • the invention proposes a device for fixing a motor vehicle bearing on the vehicle engine which overcomes these disadvantages, and in particular which reduces the time of assembly on the engine.
  • the fastening device of the motor vehicle bearing on the engine of the vehicle comprises at least one fixing lug, at least one fixing lug being provided with a fixing means of the member on said lug, and at least one lug having a bearing surface adapted to receive the vehicle member.
  • At least one of said fastening tabs is an integral fastening tab integral with the engine casing and protruding outside a face of the housing.
  • the bracket is sized to receive an intermediate bearing.
  • the assembly time of the device is at least reduced positioning time, adjustment and immobilization of the bracket on the housing.
  • the cost of the fixing lug is greatly reduced because said lug is obtained directly by molding during manufacture of the casing.
  • the integrated fixing lug comprises the bearing surface called U-shaped groove.
  • a part of the integrated fastening lug, distal to the at the face of the casing body, comprises a first fixing means of the bearing.
  • the device has reinforcing forms integral with the housing to stiffen the distal portion relative to the housing body face, the integrated bracket.
  • the device comprises a flange and the fixing lug comprises a second fastening means, the two fastening means being intended to cooperate with the flange, and at least one of the two fastening means.
  • fixing being provided with a clamping means for gripping the vehicle member between the housing and the flange.
  • the groove may have lateral flanges and a substantially half cylindrical bottom axis parallel to a Y direction of a crankshaft of the engine.
  • the housing is a dry bottom housing or a wet bottom housing.
  • the housing is a cylinder block.
  • the engine is located under the floor at the rear of the vehicle and in that the axis of the engine cylinders and the plane defined by the longitudinal axis and the transverse axis define a angle antrum - 10 ° and + 10 °.
  • the device is used to fix on the engine an intermediate bearing of an articulated line of torque transmission between a gearbox actuated by the motor and a wheel of the vehicle.
  • FIG 1 is a schematic representation of a motor vehicle engine on which is fixed a bearing according to a first embodiment of the invention
  • FIG. 2 is a side view of a vehicle engine according to the first embodiment of the invention
  • FIG 3 is a top view of the engine according to Figure 2.
  • FIG. 4 is a sectional view of a motor vehicle engine on which is fixed a bearing according to a second embodiment of the invention.
  • FIG. 5 is a side view of a motor vehicle engine according to the second embodiment of the invention.
  • FIG. 6 is a view from above of the motor vehicle engine according to FIG. 5. According to a first embodiment, as illustrated in FIG.
  • the vehicle comprises an engine block schematically shown the cylinder block 1 of the engine, a gearbox 2 rigidly fixed to the cylinder block 1 and four cylinders I d.
  • the engine block is arranged transversely between two wheels 3 at the front of the vehicle.
  • Each of the wheels 3 is rotated by means of an articulated transmission line 4 of the engine torque connecting the wheel 3 to a differential 5 of the gearbox 2.
  • the engine is provided with a crankshaft (not shown) with a Y axis parallel to the axis Yl of the differential 5.
  • the transmission line 4 comprises, for each of the wheels 3, a pair of gimbal-type cross gaskets.
  • the front wheels 3 When the vehicle is not turning, the front wheels 3 have an axis of rotation substantially parallel to the axis Y1 of the differential 5.
  • Each wheel 3 being suspended independently, the distance between the axis Y1 of the differential 5 and the axis of the wheel 3 may vary.
  • the pair of brace allows to transmit the torque between usually parallel
  • the differential 5 is located on one side of the vehicle, closer to a front wheel 3 than the other.
  • a brace 6, located on the side of the wheel furthest from the differential 5, is held in the axis Y 1 of the differential 5 by an intermediate bearing 7.
  • the intermediate bearing 7 is located as close as possible to the gasket. 6, such that the instantaneous rotational speed variations of the inclined portion of the transmission line 4 do not cause bending of the portion of the transmission line 4 of Y axis l. This avoids the parasitic fatigue of the transmission line 4.
  • the intermediate bearing 7 is a ball bearing, possibly surrounded by an elastomeric cushion designed to absorb the vibrations.
  • the intermediate bearing 7 is a member of the motor vehicle to be fixed particularly rigidly and aligned with the differential 5.
  • the cylinder block 1 has a fastening lug 8 provided with a U-shaped groove 9 receiving the intermediate bearing 7.
  • a flange 10, also provided with a U-shaped groove 11, is fixed to the fastening lug 8 by means of a 12.
  • the fastening lug 8 is an integral part of the cylinder block 1 of the engine.
  • Two lateral reinforcements 8a and 8b extend on either side of the fastening tab 8 in a pyramidal shape resting on an outer face 1a of the cylinder block 1.
  • the fastening tab 8, the two lateral reinforcements 8a and 8b form an integral part of the cylinder block 1 and form a single piece integrally obtained by molding.
  • the material of the fastening tab 8 and lateral reinforcements 8a and 8b is identical to that of the cylinder block 1, for example cast iron, or an aluminum alloy.
  • FIGS. 2 and 3 will now describe additional features of the first embodiment of the device for fixing the intermediate bearing 7.
  • FIG. 2 represents an alternative embodiment of the flange 10 without a groove 11.
  • the intermediate bearing 7 is housed in the groove 9 of the fastening lug 8.
  • the screw 12 cooperates with a thread formed in a distal portion 18 of the lug fastening 8 relative to the outer face of the crank case 1.
  • One end of the flange 10 is rotatably mounted about an axis 19 formed in a proximal portion 20 of the fastening tab 8.
  • the end of the flange 10 opposite to the axis of rotation 19, is provided with a flange 21a receiving a head 12a of the screw 12.
  • the screw 12 is unscrewed, the flange 10 pivots about the axis of rotation 19 and allows inserting the intermediate bearing 7 into the U-shaped groove 9.
  • a vehicle comprises a motor located at the rear of the vehicle.
  • a motor located at the rear of the vehicle.
  • the yoke (not shown) can be located towards the front of the vehicle and the gearbox 2 can be located at the rear of the vehicle.
  • the axis of the engine cylinders and the plane defined by the longitudinal axis L and the transverse axis T can define an angle between -10 ° and + 10 °. In our embodiment, the angle is substantially equal to 0 °.
  • Each of the wheels 3 is rotated by an articulated transmission line 4 of the engine torque connecting the wheel 3 to a differential 5 of the gearbox 2.
  • the engine is provided with a crankshaft (not shown) Y axis parallel to the axis Yl of the differential 5.
  • the transmission line 4 of axis Y2 comprises, for each of the wheels 3, a pair of cardan type cross gaskets.
  • the front wheels 3 When the vehicle is not turning, the front wheels 3 have an axis of rotation substantially parallel to the axis Y1 of the differential 5.
  • Each wheel 3 being suspended independently, the distance between the axis Y1 of the differential 5 and the axis of the wheel 3 may vary.
  • the pair of brace allows to transmit the torque between usually parallel axes and whose interaxis varies.
  • the differential 5 is located on one side of the vehicle, closer to a front wheel 3 than the other.
  • a brace 6, located on the side of the wheel furthest from the differential 5, is held in the axis Y 1 of the differential 5 by an intermediate bearing 7.
  • the intermediate bearing 7 is located as close as possible to the gasket. 6, such that the instantaneous rotational speed variations of the inclined portion of the transmission line 4 do not cause bending of the portion of the transmission line 4 of Y axis l. This avoids the parasitic fatigue of the transmission line 4.
  • the intermediate bearing 7 is a ball bearing, possibly surrounded by an elastomeric cushion designed to absorb the vibrations.
  • the intermediate bearing 7 is a member of the motor vehicle to be fixed particularly rigidly and aligned with the differential 5.
  • the lower casing 1 has a fastening lug 8 provided with a U-shaped groove 9 receiving the intermediate bearing 7.
  • a flange 10, also provided with a U-shaped groove 11, is fixed to the fastening lug 8 by means of a screw 12.
  • the bracket 8 is an integral part of the lower housing 1 of the engine.
  • Two lateral reinforcements 8a and 8b extend on either side of the fastening tab 8 in a pyramidal shape resting on an outer face 1a of the lower casing 1.
  • the fastening tab 8, the two lateral reinforcements 8a and 8b are integral with the lower housing 1 and form a single piece integrally obtained by molding.
  • the material of the fastening tab 8 and lateral reinforcements 8a and 8b is identical to that of the lower casing 1, for example cast iron, or an aluminum alloy.
  • FIGS. 5 and 5 show complementary features of the second embodiment of the fastening device of the bearing 7.
  • FIG. 5 shows an alternative embodiment of the flange 10 without a groove 11.
  • the intermediate bearing 7 is housed in the groove 9 of the bracket 8.
  • the screw 12 cooperates with a thread formed in a distal portion 18 of the bracket 8 relative to the outer face of the casing 1 lower.
  • One end of the flange 10 is rotatably mounted about an axis 19 formed in a proximal portion 20 of the fastening tab 8.
  • the end of the flange 10 opposite to the axis of rotation 19, is provided with a ledge 21a receiving a head 12a of the screw 12.
  • the flange 10 pivots around the axis of rotation 19 and makes it possible to introduce the intermediate bearing 7 into the U-shaped groove 9.
  • the assembly of the fixing lug 8, the screw 12, and the flange 10 form a clamping means for gripping the intermediate bearing 7 between the lower casing 1 and the flange 10.
  • the sump can be dry or wet.
  • the housing acts as a closure housing and the support 12 is fixed to the dry sump or is an integral part of the dry sump.
  • the sump is a wet sump ie an oil sump
  • the support 12 is attached to the oil sump or is an integral part of the sump.

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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)

Abstract

The invention concerns a device for fixing a motor vehicle element on the vehicle engine comprising at least one bracket (8), at least one bracket (8) being provided with means for fixing (12) the element (7) on said bracket (8), and at least one bracket (8) having a support surface (9) adapted to receive the element (7) of the vehicle, at least one of said brackets is an integrated bracket (8) forming part of the engine housing (1) and projecting outside one side (1a, 1c) of the housing. The invention is characterized in that the bracket (8) has a U-shaped groove designed to receive a bearing (7).

Description

Dispositif de fixation d'un organe de véhicule automobile sur le moteur du véhicule Device for fastening a motor vehicle component to the vehicle engine
L' invention concerne le domaine des dispositifs de fixation des organes d'un véhicule automobile, sur le moteur du véhicule. L' invention concerne en particulier les dispositifs de fixation d'une ligne de transmission articulée de couple entre une boîte de vitesses et une roue du véhicule.The invention relates to the field of devices for fixing the components of a motor vehicle, on the engine of the vehicle. In particular, the invention relates to devices for fixing an articulated transmission line of torque between a gearbox and a wheel of the vehicle.
Dans ce domaine, il est courant de prévoir des bossages sur le carter du moteur. Une patte de fixation présente une forme adaptée à l' organe à fixer sur le moteur et comprend généralement au moins trois points de fixation de la patte sur des bossages du carter, et des points de fixation avec l' organe à fixer. Un tel dispositif présente l'inconvénient de multiplier les moyens de fixation et le nombre de pièces à assembler. La patte de fixation représente une référence spécifique à gérer, un coût spécifique et un temps incompressible d' assemblage sur le carter du moteur.In this area, it is common to provide bosses on the motor housing. A fixing lug has a shape adapted to the member to be fixed on the motor and generally comprises at least three attachment points of the lug on bosses of the housing, and fixing points with the member to be fixed. Such a device has the disadvantage of multiplying the fastening means and the number of parts to be assembled. The bracket represents a specific reference to manage, a specific cost and an incompressible time of assembly on the crankcase of the engine.
L'invention propose un dispositif de fixation d'un palier de véhicule automobile sur le moteur du véhicule qui remédie à ces inconvénients, et notamment qui réduit le temps d' assemblage sur le moteur.The invention proposes a device for fixing a motor vehicle bearing on the vehicle engine which overcomes these disadvantages, and in particular which reduces the time of assembly on the engine.
Selon d'autres caractéristiques de l'invention, le dispositif de fixation du palier de véhicule automobile sur le moteur du véhicule, comprend au moins une patte de fixation, au moins une patte de fixation étant munie d'un moyen de fixation de l' organe sur ladite patte, et au moins une patte de fixation présentant une surface d' appui adaptée à la réception de l' organe du véhicule. Au moins une desdites pattes de fixation est une patte de fixation intégrée faisant partie intégrante du carter du moteur et faisant saillie à l' extérieur d'une face du carter. La patte de fixation est dimensionnée de façon à recevoir un palier intermédiaire.According to other features of the invention, the fastening device of the motor vehicle bearing on the engine of the vehicle, comprises at least one fixing lug, at least one fixing lug being provided with a fixing means of the member on said lug, and at least one lug having a bearing surface adapted to receive the vehicle member. At least one of said fastening tabs is an integral fastening tab integral with the engine casing and protruding outside a face of the housing. The bracket is sized to receive an intermediate bearing.
On conçoit qu'avec une patte de fixation déjà intégrée au carter du moteur, le temps d'assemblage du dispositif soit au moins réduit du temps de positionnement, de réglage et d'immobilisation de la patte de fixation sur le carter. De plus, le coût de la patte de fixation est fortement réduit du fait que ladite patte est obtenue directement par moulage lors de la fabrication du carter.It is conceivable that with a bracket already integrated in the motor housing, the assembly time of the device is at least reduced positioning time, adjustment and immobilization of the bracket on the housing. In addition, the cost of the fixing lug is greatly reduced because said lug is obtained directly by molding during manufacture of the casing.
Selon d'autres caractéristiques de l'invention, la patte de fixation intégrée comprend la surface d' appui appelée gorge en forme de U. Selon d'autres caractéristiques de l'invention, une partie de la patte de fixation intégrée, distale par rapport à la face du corps du carter, comprend un premier moyen de fixation du palier.According to other features of the invention, the integrated fixing lug comprises the bearing surface called U-shaped groove. According to other features of the invention, a part of the integrated fastening lug, distal to the at the face of the casing body, comprises a first fixing means of the bearing.
Selon d'autres caractéristiques de l'invention, le dispositif présente des formes de renfort faisant partie intégrante du carter pour rigidifier la partie distale par rapport à la face du corps du carter, de la patte de fixation intégrée.According to other features of the invention, the device has reinforcing forms integral with the housing to stiffen the distal portion relative to the housing body face, the integrated bracket.
Selon d'autres caractéristiques de l'invention, le dispositif comprend une bride et la patte de fixation comprend un deuxième moyen de fixation, les deux moyens de fixation étant destinés à coopérer avec la bride, et au moins l'un des deux moyens de fixation étant muni d'un moyen de serrage pour enserrer l' organe du véhicule entre le carter et la bride.According to other features of the invention, the device comprises a flange and the fixing lug comprises a second fastening means, the two fastening means being intended to cooperate with the flange, and at least one of the two fastening means. fixing being provided with a clamping means for gripping the vehicle member between the housing and the flange.
Selon d'autres caractéristiques de l'invention, la gorge peut présenter des rebords latéraux et un fond sensiblement demi cylindrique d' axe parallèle à une direction Y d'un vilebrequin du moteur. Selon d'autres caractéristiques de l'invention, le carter est un carter inférieur sec ou un carter inférieur humide.According to other features of the invention, the groove may have lateral flanges and a substantially half cylindrical bottom axis parallel to a Y direction of a crankshaft of the engine. According to other features of the invention, the housing is a dry bottom housing or a wet bottom housing.
Selon d'autres caractéristiques de l'invention, le carter est un carter cylindres. Selon d'autres caractéristiques de l'invention, le moteur est localisé sous le plancher à l' arrière du véhicule et en ce que l' axe des cylindres du moteur et le plan défini par l' axe longitudinal et l' axe transversal définissent un angle antre - 10° et +10° . Selon d'autres caractéristiques de l'invention, le dispositif est utilisé pour fixer sur le moteur un palier intermédiaire d'une ligne articulée de transmission de couple entre une boîte de vitesses actionnée par le moteur et une roue du véhicule.According to other features of the invention, the housing is a cylinder block. According to other features of the invention, the engine is located under the floor at the rear of the vehicle and in that the axis of the engine cylinders and the plane defined by the longitudinal axis and the transverse axis define a angle antrum - 10 ° and + 10 °. According to other characteristics of the invention, the device is used to fix on the engine an intermediate bearing of an articulated line of torque transmission between a gearbox actuated by the motor and a wheel of the vehicle.
D' autres caractéristiques et avantages de l' invention apparaîtront à la lecture de la description détaillée de quelques modes de réalisation pris à titre d' exemples non limitatifs et illustrés par les figures annexées, sur lesquelles :Other features and advantages of the invention will appear on reading the detailed description of some embodiments taken as non-limiting examples and illustrated by the appended figures, in which:
-la figure 1 est une représentation schématique d'un moteur de véhicule automobile sur lequel est fixé un palier selon un premier mode de réalisation de l' invention,FIG 1 is a schematic representation of a motor vehicle engine on which is fixed a bearing according to a first embodiment of the invention,
-la figure 2 est une vue de côté d'un moteur de véhicule selon le premier mode de réalisation de l' invention,FIG. 2 is a side view of a vehicle engine according to the first embodiment of the invention,
-la figure 3 est une vue de dessus du moteur selon la figure 2.FIG 3 is a top view of the engine according to Figure 2.
- la figure 4 est une vue en coupe d'un moteur de véhicule automobile sur lequel est fixé un palier selon un deuxième mode de réalisation de l'invention.- Figure 4 is a sectional view of a motor vehicle engine on which is fixed a bearing according to a second embodiment of the invention.
- la figure 5 est une vue de côté d'un moteur de véhicule automobile selon le deuxième mode de réalisation de l'invention.- Figure 5 is a side view of a motor vehicle engine according to the second embodiment of the invention.
-la figure 6 est une vue de dessus du moteur de véhicule automobile selon la figure 5. Selon un premier mode de réalisation, comme illustré sur la figureFIG. 6 is a view from above of the motor vehicle engine according to FIG. 5. According to a first embodiment, as illustrated in FIG.
1 , le véhicule comprend un bloc moteur dont on a représenté schématiquement le carter cylindres 1 du moteur, une boîte de vitesses 2 rigidement fixée sur le carter cylindres 1 et quatre cylindres I d. Le bloc moteur est disposé transversalement entre deux roues 3 à l' avant du véhicule. Chacune des roues 3 est entraînée en rotation grâce à une ligne articulée de transmission 4 du couple moteur reliant la roue 3 à un différentiel 5 de la boîte de vitesses 2. Le moteur est muni d'un vilebrequin non représenté d' axe Y parallèle à l' axe Yl du différentiel 5. La ligne de transmission 4 comprend, pour chacune des roues 3, une paire de joints à croisillons de type cardan. Lorsque le véhicule n'est pas en train de virer, les roues avant 3 ont un axe de rotation sensiblement parallèle à l' axe Yl du différentiel 5. Chaque roue 3 étant suspendue de manière indépendante, la distance entre l' axe Yl du différentiel 5 et l' axe de la roue 3 peut varier. La paire de joint à croisillon permet de transmettre le couple entre des axes habituellement parallèles et dont l'entre axe varie.1, the vehicle comprises an engine block schematically shown the cylinder block 1 of the engine, a gearbox 2 rigidly fixed to the cylinder block 1 and four cylinders I d. The engine block is arranged transversely between two wheels 3 at the front of the vehicle. Each of the wheels 3 is rotated by means of an articulated transmission line 4 of the engine torque connecting the wheel 3 to a differential 5 of the gearbox 2. The engine is provided with a crankshaft (not shown) with a Y axis parallel to the axis Yl of the differential 5. The transmission line 4 comprises, for each of the wheels 3, a pair of gimbal-type cross gaskets. When the vehicle is not turning, the front wheels 3 have an axis of rotation substantially parallel to the axis Y1 of the differential 5. Each wheel 3 being suspended independently, the distance between the axis Y1 of the differential 5 and the axis of the wheel 3 may vary. The pair of brace allows to transmit the torque between usually parallel axes and whose inter-axis varies.
Le différentiel 5 est situé sur un côté du véhicule, plus prés d'une roue avant 3 que de l' autre. Un j oint à croisillon 6, situé du côté de la roue la plus distante du différentiel 5, est maintenu dans l' axe Y l du différentiel 5 par un palier intermédiaire 7. Le palier intermédiaire 7 est situé le plus près possible du joint à croisillon 6, de manière que les variations de vitesse instantanée de rotation de la partie inclinée de la ligne de transmission 4 ne provoquent pas de flexion de la partie de la ligne de transmission 4 d' axe Y l . Cela évite la fatigue parasite de la ligne de transmission 4. Le palier intermédiaire 7 est un roulement à billes, éventuellement entouré d'un coussin élastomère destiné à encaisser les vibrations. Le palier intermédiaire 7 est un organe du véhicule automobile devant être fixé de manière particulièrement rigide et bien aligné par rapport au différentiel 5.The differential 5 is located on one side of the vehicle, closer to a front wheel 3 than the other. A brace 6, located on the side of the wheel furthest from the differential 5, is held in the axis Y 1 of the differential 5 by an intermediate bearing 7. The intermediate bearing 7 is located as close as possible to the gasket. 6, such that the instantaneous rotational speed variations of the inclined portion of the transmission line 4 do not cause bending of the portion of the transmission line 4 of Y axis l. This avoids the parasitic fatigue of the transmission line 4. The intermediate bearing 7 is a ball bearing, possibly surrounded by an elastomeric cushion designed to absorb the vibrations. The intermediate bearing 7 is a member of the motor vehicle to be fixed particularly rigidly and aligned with the differential 5.
Le carter cylindres 1 présente une patte de fixation 8 munie d'une gorge 9 en U recevant le palier intermédiaire 7. Une bride 10, également munie d'une gorge 11 en U, est fixée à la patte de fixation 8 grâce à une vis 12. La patte de fixation 8 fait partie intégrante du carter cylindres 1 du moteur. Deux renforts latéraux 8a et 8b s' étendent de part et d' autre de la patte de fixation 8 selon une forme pyramidale en appui sur une face extérieure l a du carter cylindres 1. La patte de fixation 8, les deux renforts latéraux 8a et 8b, font partie intégrante du carter cylindres 1 et forment une seule pièce monobloc obtenue par moulage. Le matériau de la patte de fixation 8 et des renforts latéraux 8a et 8b est identique à celui du carter cylindres 1 , par exemple de la fonte, ou un alliage d' aluminium.The cylinder block 1 has a fastening lug 8 provided with a U-shaped groove 9 receiving the intermediate bearing 7. A flange 10, also provided with a U-shaped groove 11, is fixed to the fastening lug 8 by means of a 12. The fastening lug 8 is an integral part of the cylinder block 1 of the engine. Two lateral reinforcements 8a and 8b extend on either side of the fastening tab 8 in a pyramidal shape resting on an outer face 1a of the cylinder block 1. The fastening tab 8, the two lateral reinforcements 8a and 8b , form an integral part of the cylinder block 1 and form a single piece integrally obtained by molding. The material of the fastening tab 8 and lateral reinforcements 8a and 8b is identical to that of the cylinder block 1, for example cast iron, or an aluminum alloy.
On va maintenant décrire à l' aide des figures 2 et 3 , des caractéristiques complémentaires du premier mode de réalisation du dispositif de fixation du palier intermédiaire 7.FIGS. 2 and 3 will now describe additional features of the first embodiment of the device for fixing the intermediate bearing 7.
La figure 2 représente une variante de réalisation de la bride 10 dépourvue de gorge 11. Le palier intermédiaire 7 est logé dans la gorge 9 de la patte de fixation 8. La vis 12 coopère avec un filetage ménagé dans une partie distale 18 de la patte de fixation 8 par rapport à la face extérieure l a du carter cylindres 1. Une extrémité de la bride 10 est montée à rotation autour d'un axe 19 ménagé dans une partie proximale 20 de la patte de fixation 8. L' extrémité de la bride 10 opposée à l' axe de rotation 19, est munie d'un rebord 21 a recevant une tête 12a de la vis 12. Lorsque la vis 12 est dévissée, la bride 10 pivote autour de l' axe de rotation 19 et permet d'introduire le palier intermédiaire 7 dans la gorge en U 9. Lorsque l' on visse la vis 12 dans une partie distale 18 de la patte de fixation 8 , l' ensemble de la patte de fixation 8, de la vis 12, et de la bride 10 forme un moyen de serrage permettant d' enserrer le palier intermédiaire 7 entre le carter cylindres 1 et la bride 10.FIG. 2 represents an alternative embodiment of the flange 10 without a groove 11. The intermediate bearing 7 is housed in the groove 9 of the fastening lug 8. The screw 12 cooperates with a thread formed in a distal portion 18 of the lug fastening 8 relative to the outer face of the crank case 1. One end of the flange 10 is rotatably mounted about an axis 19 formed in a proximal portion 20 of the fastening tab 8. The end of the flange 10 opposite to the axis of rotation 19, is provided with a flange 21a receiving a head 12a of the screw 12. When the screw 12 is unscrewed, the flange 10 pivots about the axis of rotation 19 and allows inserting the intermediate bearing 7 into the U-shaped groove 9. When the screw 12 is screwed into a distal portion 18 of the fixing lug 8, the assembly of the fastening lug 8, the screw 12, and the flange 10 forms a clamping means for gripping the intermediate bearing 7 between the ca rter cylinders 1 and the flange 10.
Selon un deuxième mode de réalisation de l'invention, un véhicule comprend un moteur localisé à l'arrière du véhicule. Comme illustré sur la figure 4, on a représenté schématiquement le carter inférieur 1 et une boîte de vitesses 2 rigidement fixée sur le carter inférieur 1. La culasse (non représentée) peut être localisée vers l'avant du véhicule et la boîte de vitesses 2 peut être localisée à l'arrière du véhicule. L'axe des cylindres du moteur et le plan défini par l'axe longitudinal L et l'axe transversal T peuvent définir un angle compris entre -10° et + 10°. Dans notre mode de réalisation, l'angle est sensiblement égal à 0°. Chacune des roues 3 est entraînée en rotation grâce à une ligne articulée de transmission 4 du couple moteur reliant la roue 3 à un différentiel 5 de la boîte de vitesses 2. Le moteur est muni d'un vilebrequin (non représenté) d'axe Y parallèle à l'axe Yl du différentiel 5.According to a second embodiment of the invention, a vehicle comprises a motor located at the rear of the vehicle. As illustrated in Figure 4, there is shown schematically the lower casing 1 and a gearbox 2 rigidly fixed to the lower casing 1. The yoke (not shown) can be located towards the front of the vehicle and the gearbox 2 can be located at the rear of the vehicle. The axis of the engine cylinders and the plane defined by the longitudinal axis L and the transverse axis T can define an angle between -10 ° and + 10 °. In our embodiment, the angle is substantially equal to 0 °. Each of the wheels 3 is rotated by an articulated transmission line 4 of the engine torque connecting the wheel 3 to a differential 5 of the gearbox 2. The engine is provided with a crankshaft (not shown) Y axis parallel to the axis Yl of the differential 5.
La ligne de transmission 4 d' axe Y2 comprend, pour chacune des roues 3, une paire de joints à croisillon de type cardan. Lorsque le véhicule n'est pas en train de virer, les roues avant 3 ont un axe de rotation sensiblement parallèle à l' axe Yl du différentiel 5. Chaque roue 3 étant suspendue de manière indépendante, la distance entre l' axe Yl du différentiel 5 et l' axe de la roue 3 peut varier. La paire de joint à croisillon permet de transmettre le couple entre des axes habituellement parallèles et dont l' entre axe varie.The transmission line 4 of axis Y2 comprises, for each of the wheels 3, a pair of cardan type cross gaskets. When the vehicle is not turning, the front wheels 3 have an axis of rotation substantially parallel to the axis Y1 of the differential 5. Each wheel 3 being suspended independently, the distance between the axis Y1 of the differential 5 and the axis of the wheel 3 may vary. The pair of brace allows to transmit the torque between usually parallel axes and whose interaxis varies.
Le différentiel 5 est situé sur un côté du véhicule, plus prés d'une roue avant 3 que de l' autre. Un j oint à croisillon 6, situé du côté de la roue la plus distante du différentiel 5, est maintenu dans l' axe Y l du différentiel 5 par un palier intermédiaire 7. Le palier intermédiaire 7 est situé le plus près possible du joint à croisillon 6, de manière que les variations de vitesse instantanée de rotation de la partie inclinée de la ligne de transmission 4 ne provoquent pas de flexion de la partie de la ligne de transmission 4 d' axe Y l . Cela évite la fatigue parasite de la ligne de transmission 4. Le palier intermédiaire 7 est un roulement à billes, éventuellement entouré d'un coussin élastomère destiné à encaisser les vibrations. Le palier intermédiaire 7 est un organe du véhicule automobile devant être fixé de manière particulièrement rigide et bien aligné par rapport au différentiel 5. Le carter 1 inférieur présente une patte de fixation 8 munie d'une gorge 9 en U recevant le palier intermédiaire 7. Une bride 10, également munie d'une gorge 11 en U, est fixée à la patte de fixation 8 grâce à une vis 12. La patte de fixation 8 fait partie intégrante du carter 1 inférieur du moteur. Deux renforts latéraux 8a et 8b s' étendent de part et d' autre de la patte de fixation 8 selon une forme pyramidale en appui sur une face extérieure l a du carter 1 inférieur. La patte de fixation 8, les deux renforts latéraux 8a et 8b, font partie intégrante du carter 1 inférieur et forment une seule pièce monobloc obtenue par moulage. Le matériau de la patte de fixation 8 et des renforts latéraux 8a et 8b est identique à celui du carter 1 inférieur, par exemple de la fonte, ou un alliage d' aluminium.The differential 5 is located on one side of the vehicle, closer to a front wheel 3 than the other. A brace 6, located on the side of the wheel furthest from the differential 5, is held in the axis Y 1 of the differential 5 by an intermediate bearing 7. The intermediate bearing 7 is located as close as possible to the gasket. 6, such that the instantaneous rotational speed variations of the inclined portion of the transmission line 4 do not cause bending of the portion of the transmission line 4 of Y axis l. This avoids the parasitic fatigue of the transmission line 4. The intermediate bearing 7 is a ball bearing, possibly surrounded by an elastomeric cushion designed to absorb the vibrations. The intermediate bearing 7 is a member of the motor vehicle to be fixed particularly rigidly and aligned with the differential 5. The lower casing 1 has a fastening lug 8 provided with a U-shaped groove 9 receiving the intermediate bearing 7. A flange 10, also provided with a U-shaped groove 11, is fixed to the fastening lug 8 by means of a screw 12. The bracket 8 is an integral part of the lower housing 1 of the engine. Two lateral reinforcements 8a and 8b extend on either side of the fastening tab 8 in a pyramidal shape resting on an outer face 1a of the lower casing 1. The fastening tab 8, the two lateral reinforcements 8a and 8b, are integral with the lower housing 1 and form a single piece integrally obtained by molding. The material of the fastening tab 8 and lateral reinforcements 8a and 8b is identical to that of the lower casing 1, for example cast iron, or an aluminum alloy.
On va maintenant décrire à l' aide des figures 5 et 6, des caractéristiques complémentaires du deuxième mode de réalisation du dispositif de fixation du palier 7. La figure 5 représente une variante de réalisation de la bride 10 dépourvue de gorge 11. Le palier intermédiaire 7 est logé dans la gorge 9 de la patte de fixation 8. La vis 12 coopère avec un filetage ménagé dans une partie distale 18 de la patte de fixation 8 par rapport à la face extérieure l a du carter 1 inférieur. Une extrémité de la bride 10 est montée à rotation autour d'un axe 19 ménagé dans une partie proximale 20 de la patte de fixation 8. L' extrémité de la bride 10 opposée à l' axe de rotation 19, est munie d'un rebord 21 a recevant une tête 12a de la vis 12.FIGS. 5 and 5 show complementary features of the second embodiment of the fastening device of the bearing 7. FIG. 5 shows an alternative embodiment of the flange 10 without a groove 11. The intermediate bearing 7 is housed in the groove 9 of the bracket 8. The screw 12 cooperates with a thread formed in a distal portion 18 of the bracket 8 relative to the outer face of the casing 1 lower. One end of the flange 10 is rotatably mounted about an axis 19 formed in a proximal portion 20 of the fastening tab 8. The end of the flange 10 opposite to the axis of rotation 19, is provided with a ledge 21a receiving a head 12a of the screw 12.
Lorsque la vis 12 est dévissée, la bride 10 pivote autour de l' axe de rotation 19 et permet d' introduire le palier intermédiaire 7 dans la gorge 9 en U. Lorsque l' on visse la vis 12 dans une partie distale 18 de la patte de fixation 8 , l' ensemble de la patte de fixation 8, de la vis 12, et de la bride 10 forme un moyen de serrage permettant d'enserrer le palier intermédiaire 7 entre le carter 1 inférieur et la bride 10. Le carter inférieur peut être sec ou humide. Dans le cas où le carter inférieur est sec, le carter fait office de carter de fermeture et le support 12 est fixé au carter sec ou fait partie intégrante du carter sec. Dans le cas où le carter inférieur est un carter humide c'est à dire un carter d'huile, le support 12 est fixé au carter d'huile ou fait partie intégrante du carter d'huile. When the screw 12 is unscrewed, the flange 10 pivots around the axis of rotation 19 and makes it possible to introduce the intermediate bearing 7 into the U-shaped groove 9. When the screw 12 is screwed into a distal portion 18 of the fixing lug 8, the assembly of the fixing lug 8, the screw 12, and the flange 10 form a clamping means for gripping the intermediate bearing 7 between the lower casing 1 and the flange 10. The sump can be dry or wet. In the case where the lower housing is dry, the housing acts as a closure housing and the support 12 is fixed to the dry sump or is an integral part of the dry sump. In the case where the sump is a wet sump ie an oil sump, the support 12 is attached to the oil sump or is an integral part of the sump.

Claims

REVENDICATIONS
1 - Dispositif de fixation d'un organe de véhicule automobile sur le moteur du véhicule, comprenant au moins une patte de fixation (8), au moins une patte de fixation (8) étant munie d'un moyen de fixation ( 12) de l' organe (7) sur ladite patte (8), et au moins une patte de fixation (8) présentant une surface d' appui (9) adaptée à la réception de l' organe (7) du véhicule, au moins une desdites pattes de fixation est une patte de fixation intégrée (8) faisant partie intégrante du carter ( 1 ) du moteur et faisant saillie à l' extérieur d'une face ( l a, Ic) du carter ( 1 ) caractérisé en ce que la patte de fixation (8) est dimensionnée de façon à recevoir un palier intermédiaire (7).1 - Device for fixing a motor vehicle component to the vehicle engine, comprising at least one fixing lug (8), at least one fixing lug (8) being provided with a fastening means (12) for the member (7) on said lug (8), and at least one fixing lug (8) having a bearing surface (9) adapted to receive the vehicle member (7), at least one of said fastening lugs is an integrated fixing lug (8) forming an integral part of the motor casing (1) and protruding outside a face (Ic, Ic) of the casing (1), characterized in that the lug of fastener (8) is dimensioned to receive an intermediate bearing (7).
2 - Dispositif selon la revendication 1 , caractérisé en ce que la patte de fixation intégrée (8) comprend la surface d' appui appelée gorge (9) en forme de U.2 - Device according to claim 1, characterized in that the integrated fastening lug (8) comprises the bearing surface called groove (9) U-shaped.
3 - Dispositif selon la revendication 1 ou 2, caractérisé en ce qu'une partie distale ( 18) par rapport à la face ( l a, Ic) du carter ( 1 ), de la patte de fixation intégrée (8) comprend un premier moyen de fixation ( 12) du palier (7).3 - Device according to claim 1 or 2, characterized in that a distal portion (18) relative to the face (la, Ic) of the housing (1), the integrated fastening tab (8) comprises a first means fixing (12) of the bearing (7).
4 - Dispositif selon l'une quelconque des revendications 1 à 3 , caractérisé en ce qu'il présente des formes de renfort (8a, 8b) faisant partie intégrante du carter ( 1 ) pour rigidifier la partie distale ( 18) par rapport à la face (l a, Ic) du corps ( Ib) du carter ( 1 ), de la patte de fixation intégrée (8)4 - Device according to any one of claims 1 to 3, characterized in that it has reinforcing forms (8a, 8b) integral with the housing (1) for stiffening the distal portion (18) relative to the face (Ic, Ic) of the body (Ib) of the casing (1), of the integrated fixing lug (8)
5 - Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il comporte une bride ( 10) et en ce que la patte de fixation (8) comporte un deuxième moyen de fixation ( 19), les deux moyens de fixation étant destinés à coopérer avec la bride ( 10), et au moins l'un des deux moyens de fixation étant muni d'un moyen de serrage (12) pour enserrer le palier (7) du véhicule entre le carter ( 1 ) et la bride ( 10).5 - Device according to any one of claims 1 to 4, characterized in that it comprises a flange (10) and in that the leg of fastener (8) comprises a second fixing means (19), the two fastening means being intended to cooperate with the flange (10), and at least one of the two fastening means being provided with a clamping means ( 12) to grip the bearing (7) of the vehicle between the housing (1) and the flange (10).
6 - Dispositif selon l'une quelconque des revendications 1 à 5 , caractérisé en ce que la gorge (9) présente des rebords latéraux et un fond sensiblement demi cylindrique d' axe parallèle à une direction Y d'un vilebrequin du moteur.6 - Device according to any one of claims 1 to 5, characterized in that the groove (9) has lateral flanges and a substantially half cylindrical bottom axis parallel to a Y direction of a crankshaft of the engine.
7 - Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le carter est un carter inférieur sec ou un carter inférieur humide.7 - Device according to any one of claims 1 to 6, characterized in that the housing is a dry bottom housing or a wet bottom housing.
8 - Dispositif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le carter est un carter cylindres.8 - Device according to any one of claims 1 to 6, characterized in that the housing is a cylinder block.
9 - Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 7, caractérisé en ce que le moteur est localisé sous le plancher à l' arrière du véhicule et en ce que l' axe des cylindres du moteur et le plan défini par l' axe longitudinal (L) et l' axe transversal (T) définissent un angle antre - 10° et + 10°.9 - Use of a device according to any one of claims 1 to 7, characterized in that the engine is located under the floor at the rear of the vehicle and in that the axis of the engine cylinders and the plane defined the longitudinal axis (L) and the transverse axis (T) define an angle between - 10 ° and + 10 °.
10 -Utilisation d'un dispositif selon l'une quelconque des revendications 1 à 9, pour fixer sur le moteur un palier intermédiaire (7) d'une ligne articulée (4) de transmission de couple entre une boîte de vitesses (2) actionnée par le moteur et une roue (3) du véhicule. 10 -Utilization of a device according to any one of claims 1 to 9, for fixing on the engine an intermediate bearing (7) of an articulated line (4) of torque transmission between a gearbox (2) actuated by the engine and a wheel (3) of the vehicle.
PCT/FR2006/050880 2005-09-13 2006-09-12 Device for fixing a motor vehicle element on the vehicle engine WO2007031687A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0509303 2005-09-13
FR0509303A FR2890708A1 (en) 2005-09-13 2005-09-13 System for attaching catalytic converter or bearing for articulated transmission to vehicle engine comprises brackets to which they are bolted, at least one bracket forming integral part of engine casing
FR0554007 2005-12-22
FR0554007A FR2895362A3 (en) 2005-12-22 2005-12-22 Motor vehicle engine fixing bracket, especially for drive transmission component has lug made with U-section recess to hold bearing

Publications (1)

Publication Number Publication Date
WO2007031687A1 true WO2007031687A1 (en) 2007-03-22

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DE4001437A1 (en) * 1990-01-19 1991-07-25 Porsche Ag Motor vehicle with rear mounted IC engine - which has horizontally opposed cylinders and has crankshaft aligned longitudinally
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GB2345041A (en) * 1998-12-23 2000-06-28 Rover Group Motor vehicle transmission assembly
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