EP1888944A2 - Gearbox with lateral oil pump - Google Patents

Gearbox with lateral oil pump

Info

Publication number
EP1888944A2
EP1888944A2 EP06743833A EP06743833A EP1888944A2 EP 1888944 A2 EP1888944 A2 EP 1888944A2 EP 06743833 A EP06743833 A EP 06743833A EP 06743833 A EP06743833 A EP 06743833A EP 1888944 A2 EP1888944 A2 EP 1888944A2
Authority
EP
European Patent Office
Prior art keywords
gearbox
oil pump
clutch
oil
shafts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06743833A
Other languages
German (de)
French (fr)
Inventor
Michel Buannec
Paulo Da Silva
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Renault SAS
Original Assignee
Renault SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renault SAS filed Critical Renault SAS
Publication of EP1888944A2 publication Critical patent/EP1888944A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/0021—Generation or control of line pressure
    • F16H61/0025—Supply of control fluid; Pumps therefore

Definitions

  • the invention relates to the gearboxes of a motor vehicle with parallel shafts and an oil multidisc clutch.
  • the invention particularly relates to gearboxes equipped with an oil pump intended for clutching.
  • a multi-disc oil clutch requires a hydraulic pump to be driven mechanically even before the vehicle is in motion.
  • pressurized oil is required to control the clutch. actuate the latter to move from the free state to the engaged state
  • the oil pump supplies a hydraulic distribution member. Lubrication of the discs themselves is also necessary and useful when the discs are at rest, especially when using a controlled slip technique.
  • gearboxes are equipped with two multi-fluid clutches.
  • the oil flow required for a gearbox with multi-fluid oil clutches is therefore large enough that there is a problem of bulk of the oil pump inside the gearbox.
  • the invention proposes a gearbox equipped with an oil pump capable of a flow rate sufficient to feed multi-plate clutches which is easy to implement inside a vehicle, in particular with regard to the implantation in a vehicle.
  • the axis of the engine crankshaft According to one embodiment, the motor vehicle engine gearbox is provided with parallel shafts and comprises at least one oil-filled clutch and an oil pump for controlling the clutch.
  • the oil pump is mechanically driven by a hub, whose axis is substantially perpendicular to the shafts of the gearbox
  • the oil pump is of generally flat shape, and the axis of the drive hub of said oil pump is substantially perpendicular to said flat shape.
  • a flat shape it is meant that the pump has a volume of space of which the dimension in a thickness direction is smaller than the two dimensions in two other perpendicular directions
  • the clutch is provided with a clutch bell connected to the engine.
  • the drive hub of the oil pump is connected by a kinematic chain to the clutch housing
  • the driveline can have a 90 degree bevel gearbox
  • the kinematic chain comprises a first toothed wheel integral with the clutch bell, a subassembly provided with a second toothed wheel meshing with the first toothed wheel and a first conical gear, the subassembly being free in rotation about a fixed axis with respect to a clutch cartel, the driving hub of the pump being equipped with a second conical gear meshing with the first bevel gear
  • the oil pump is immersed in the lower part of the a housing containing the clutch so as to aspne the dripping oil of the clutch
  • the pump comprises two flat rotors side by side and parallel axes.
  • the pump is generally rectangular in shape, arranged along the shafts of the gearbox, close to a hydraulic distribution member. The oil pump and the hydraulic distribution unit can be accessed by the same side hatch
  • the gearbox has two primary shafts alternately connected to two oil clutches and three other shafts provided with pinions of which only one meshes with a differential ring driving the wheels of the vehicle.
  • FIG. 1 is a schematic representation in side section of the gearbox
  • FIG 2 is a schematic representation in a transverse plane of the gearbox.
  • the gearbox 1 comprises a clutch 2 connected to a drive shaft 3 of the gearbox 1 in the axis of the crankshaft of the engine, not shown.
  • the gearbox 1 also comprises a primary shaft.
  • the part of the gearbox 1 comprising the clutch 2 is contained in a clutch housing.
  • gearbox shown in Figure 2 are contained in a housing of the mechanisms 6
  • a clutch cover 7 is traversed by the drive shaft 3 of the gearbox 1 and is provided with a seal 8 ensuring the seal between the clutch couveicle 7 and the drive shaft 3 of the gearbox 1
  • a hydraulic distribution member 9 is located in the lower part of the gearbox 1 and communicates with the clutch housing 5
  • the hydraulic distribution member 9 is supplied with oil under pressure by an oil pump 10 and distributes when necessary pressurized oil to such or such part of the clutch 2
  • the clutch 2 comprises a clutch bell 11 occupying the bulk of the external dimensions of the clutch 2.
  • the clutch bell 11 is driven in continuous rotation by the drive shaft 3 of the clutch box 11. 1
  • Within the clutch housing 11 are a plurality of disks, not shown, rotatably connected to the clutch housing 11, in register with a plurality of disks connected in rotation with the primary shaft 4
  • a first toothed wheel 12 is fixed on the clutch bell 11.
  • the rotation of the first toothed wheel 12 is directly linked to the rotation of the motor of the vehicle by the drive shaft 3 of the gearbox 1, which the clutch 2 is engaged or not
  • a sub-assembly 13, free to rotate about an axis hé to the clutch housing not shown, comprises a second gear 14 meshing with the first gear 12 and a first bevel gear 15
  • the drive hub 16 of the oil pump 10 is provided with a second bevel gear 17 meshing with the first bevel gear 15
  • the first bevel gear 15 and the second bevel gear 17 form a bevel gear 18
  • the axle 16a of The driving hub 16 of the oil pump 10 is substantially perpendicular to the common direction of the shafts of the gearbox and the crankshaft of the engine.
  • the oil pump 10 comprises two rotors 19 and 20.
  • the two rotors 19 and 20 have conjugate gear shapes not shown so that the oil in which the rotors rotates is compressed in the part where the conjugate toothings go towards their meshing position and is sucked into the part where the teeth move away from their meshing position.
  • oil 10 is of a substantially rectangular and flat general shape
  • the oil pump 10 is parallelepiped with a thickness for example three times smaller than the width
  • the thickness of the pump 10 corresponds to the thickness of the rotors 19, 20
  • the width of the pump 10, visible in Figure 2 corresponds to the diameter of the rotors 19, 20 and the length, visible in Figure 1, corresponds to the sum of the diameters of the two rotors 19 and 20
  • the axis 16a of the drive hub 16 is perpendicular to the flat rectangular shape and the shafts of the gearbox 1
  • the length of the primary shaft 4, as well as the center distance between the different parallel shafts of the gearbox 1 are directly imposed by the architecture of the gearbox 1 Clutter due to the length and the width
  • the oil pump 10 is not disadvantageous with respect to the size of the gearbox mechanisms.
  • the thickness of the oil pump 10 is particularly reduced so as not to cause excessive excess space in a box. 1 comprising both the mechanisms 6 and the oil pump 10
  • the clutch housing 5 shown in Figure 1 has a partition 21 separating the part of the gearbox 1 comprising the mechanisms 6, the part of the gearbox 1 comprising the clutch 2, the hydraulic distribution member 9 and the oil pump 10
  • the mechanisms 6 of the gearbox 1 can be lubricated with an oil different from that used for the clutch 2
  • FIG. 2 will now describe the transverse distribution of various members of the gearbox 1.
  • the clutch bell 11 drives two concentric clutches independent of one another and connected alternately to two shafts. coaxial primaries 4a and 4b.
  • the gearbox 1 comprises two secondary shafts 22 and 23 each provided with several synchronization systems, not shown. The synchronization systems make it possible to secure with the corresponding secondary shaft 22 or 23, pinions rotatably mounted on said secondary shaft 22 or 23. and meshing with teeth of the primary shafts 4a or 4b
  • the secondary shaft 22 is provided with a pinion meshing with a ring 24 of differential of the vehicle
  • the secondary shaft 23 is not in direct meshing relationship with the differential ring 24
  • the reports of the box speeds established by means of synchronization systems arranged on the secondary shaft 23, have a kinematic chain comprising deflection gears mounted either on an intermediate shaft 25, or on one of the primary shafts 4a or 4b so as to drive the pinion
  • the gearbox 1 has secondary shafts 22 and 23, as well as an intermediate shaft 25 in the lower part of the gearbox 1.
  • the oil pump 10 has an oil inlet 26 located in the lower part of the gearbox so that the oil flowing inside the clutch housing 5 can be recovered by the oil inlet. 26.
  • the clutch housing 5 has a lateral opening on the side of the hydraulic distribution member 9 closed by a side hatch 5a
  • the side hatch 5a allows simultaneous access to the hydraulic distribution member 9 and to the oil pump 10 in order to be able to maintain one and the other
  • the angle of the bevel gears 15 and 17 is 45 ° so that the bevel gear, illustrated in the figure, is substantially 90 °
  • the angle that the axis 16a of the drive hub 16 of the oil pump 10 with the parallel shafts of the gearbox may be slightly different from 90 ° so that the outer surface 10a of the oil pump 10 can match the available foimes of the housing of the mechanisms 6 in order to optimizes the overall size of the gearbox 1

Abstract

The invention concerns a motor vehicle engine gearbox (1) provided with parallel shafts (4, 22, 23, 25) and comprising at least one multidisc oil-driven clutch (2) and an oil pump (10) for controlling the clutch (2), the oil pump (10) is mechanically driven by an axle (16a) hub (16) substantially perpendicular to the shafts (4, 22, 23, 25) of the gearbox (1).

Description

Boîte de vitesses avec pompe à huile latérale Transmission with side oil pump
L'invention concerne les boîtes de vitesses de véhicule automobile à arbres parallèles et à embrayage multidisques à huile L'invention concerne tout particulièrement les boîtes de vitesses équipées d'une pompe à huile destinée à l'embrayageThe invention relates to the gearboxes of a motor vehicle with parallel shafts and an oil multidisc clutch. The invention particularly relates to gearboxes equipped with an oil pump intended for clutching.
Un embrayage multidisques à huile nécessite une pompe hydraulique devant être entraînée mécaniquement avant même que le véhicule soit en mouvement En effet, dans le cas de boîte de vitesses automatique, de l'huile sous pression est nécessaire pour assurer la commande de l'embrayage et actionner celui-ci pour qu'il passe de l'état libre à l'état embrayé La pompe à huile alimente un organe de distribution hydraulique. La lubrification des disques eux-mêmes est également nécessaire et a heu lorsque les disques sont au repos, tout particulièrement lorsqu'on a recours à une technique de glissement piloté.A multi-disc oil clutch requires a hydraulic pump to be driven mechanically even before the vehicle is in motion. In the case of an automatic transmission, pressurized oil is required to control the clutch. actuate the latter to move from the free state to the engaged state The oil pump supplies a hydraulic distribution member. Lubrication of the discs themselves is also necessary and useful when the discs are at rest, especially when using a controlled slip technique.
Par ailleurs, certaines boîte de vitesses sont équipées de deux embrayages multidiques à huile. Le débit d'huile nécessaire pour une boîte de vitesses à embrayages multidiques à huile est donc suffisamment important pour que se pose un problème d'encombrement de la pompe à huile à l'intérieur de la boîte de vitessesIn addition, some gearboxes are equipped with two multi-fluid clutches. The oil flow required for a gearbox with multi-fluid oil clutches is therefore large enough that there is a problem of bulk of the oil pump inside the gearbox.
Dans ce domaine, a été proposée une implantation de la pompe à huile en extrémité arrière de boîte de vitesses Un arbre relié au vilebrequin du moteur du véhicule traverse les arbres primaires de la boîte de vitesse et entraîne la pompe à huile Une telle boîte de vitesses équipée de sa pompe à huile est très longue et pose un problème d'implantation à l'intérieur du véhiculeIn this area, it has been proposed an implantation of the oil pump at the rear end of a gearbox A shaft connected to the crankshaft of the vehicle engine passes through the primary shafts of the gearbox and drives the oil pump Such a gearbox equipped with its oil pump is very long and poses a problem of implantation inside the vehicle
L'invention propose une boîte de vitesses équipée d'une pompe à huile capable d'un débit suffisant pour alimenter des embrayages multidisques qui soit facile à implanter à l'intérieur d'un véhicule, notamment pour ce qui est de l'implantation dans l'axe du vilebrequin du moteur Selon un mode de réalisation, la boîte de vitesses poui moteur de véhicule automobile est munie d'arbres parallèles et comprend au moins un embrayage muHidisques à huile et une pompe à huile poui la commande de l'embrayage La pompe à huile est entraînée mécaniquement par un moyeu, d'axe sensiblement perpendiculaire aux arbres de la boîte de vitessesThe invention proposes a gearbox equipped with an oil pump capable of a flow rate sufficient to feed multi-plate clutches which is easy to implement inside a vehicle, in particular with regard to the implantation in a vehicle. the axis of the engine crankshaft According to one embodiment, the motor vehicle engine gearbox is provided with parallel shafts and comprises at least one oil-filled clutch and an oil pump for controlling the clutch. The oil pump is mechanically driven by a hub, whose axis is substantially perpendicular to the shafts of the gearbox
On conçoit qu'une telle boîte de vitesse, présentant un moyeu d'entraînement de la pompe à huile, dont l'axe est transveisal par rapport aux arbres supportant les mécanismes, ladite pompe à huile peut être déportée sur un côté des mécanismes de la boîte de vitessesIt is conceivable that such a gearbox, having a drive hub of the oil pump, whose axis is transveisal relative to the shafts supporting the mechanisms, said oil pump can be deported on one side of the mechanisms of the gearbox
L'implantation d'une telle boîte est facilitée dans la direction du vilebrequin du moteurThe implantation of such a box is facilitated in the direction of the crankshaft of the engine
Avantageusement, la pompe à huile est de forme générale plate, et l'axe du moyeu d'entraînement de ladite pompe à huile est sensiblement perpendiculaire à ladite forme plate Par une forme plate, on entend que la pompe présente un volume d'encombrement dont la dimension selon une direction d'épaisseur est plus faible que les deux dimensions selon deux autres directions perpendiculairesAdvantageously, the oil pump is of generally flat shape, and the axis of the drive hub of said oil pump is substantially perpendicular to said flat shape. By a flat shape, it is meant that the pump has a volume of space of which the dimension in a thickness direction is smaller than the two dimensions in two other perpendicular directions
Selon une variante, l'embrayage est muni d'une cloche d'embrayage reliée au moteur. Le moyeu d'entraînement de la pompe à huile est relié par une chaîne cinématique à la cloche d'embrayage La chaîne cinématique peut présenter un renvoi d'angle à 90According to one variant, the clutch is provided with a clutch bell connected to the engine. The drive hub of the oil pump is connected by a kinematic chain to the clutch housing The driveline can have a 90 degree bevel gearbox
Avantageusement, la chaîne cinématique comprend une première roue dentée solidaire de la cloche d'embrayage, un sous- ensemble muni d'une deuxième roue dentée engrenant avec la première roue dentée et d'un premier pignon conique, le sous-ensemble étant libre en rotation autour d'un axe fixe par rapport à un cartel d'embrayage, le moyeu d'entraînement de la pompe étant équipé d'un deuxième pignon conique engrenant avec le premier pignon conique Avantageusement, la pompe à huile est immergée en partie basse d'un carter contenant l'embrayage de manière à aspnei l'huile ruisselant de l'embrayage Avantageusement, la pompe comprend deux rotors plats côte à côte et d'axes parallèles La pompe est de forme générale rectangulaire, disposée le long des arbres de la boîte de vitesses, à proximité d'un organe de distribution hydraulique. La pompe à huile et l'organe distribution hydraulique peuvent être accessibles par une même trappe latéraleAdvantageously, the kinematic chain comprises a first toothed wheel integral with the clutch bell, a subassembly provided with a second toothed wheel meshing with the first toothed wheel and a first conical gear, the subassembly being free in rotation about a fixed axis with respect to a clutch cartel, the driving hub of the pump being equipped with a second conical gear meshing with the first bevel gear Advantageously, the oil pump is immersed in the lower part of the a housing containing the clutch so as to aspne the dripping oil of the clutch Advantageously, the pump comprises two flat rotors side by side and parallel axes. The pump is generally rectangular in shape, arranged along the shafts of the gearbox, close to a hydraulic distribution member. The oil pump and the hydraulic distribution unit can be accessed by the same side hatch
Selon une autre variante, la boîte de vitesses possède deux arbres primaires reliés alternativement à deux embrayages à huile et trois autres arbres munis de pignons dont un seul engrène avec une couronne de différentiel entraînant les roues du véhiculeAccording to another variant, the gearbox has two primary shafts alternately connected to two oil clutches and three other shafts provided with pinions of which only one meshes with a differential ring driving the wheels of the vehicle.
D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée d'un mode de réalisation de la boîte de vitesses pris à titre d'exemple non limitatif et illustré par les dessins annexés, sur lesquels -la figure 1 est une représentation schématique en coupe latérale de la boîte de vitesses, etOther features and advantages of the invention will appear on reading the detailed description of an embodiment of the gearbox taken as a non-limiting example and illustrated by the accompanying drawings, in which: FIG. 1 is a schematic representation in side section of the gearbox, and
-la figure 2 est une représentation schématique selon un plan transversal de la boîte de vitesses.FIG 2 is a schematic representation in a transverse plane of the gearbox.
Comme illustré sur la figure 1, la boîte de vitesses 1 comprend un embrayage 2 relié à un arbre d'entraînement 3 de la boîte de vitesses 1 dans l'axe du vilebrequin du moteur non représenté La boîte de vitesses 1 comprend également un arbre primaire 4 entraîne par l'embrayage 2 La partie de la boîte de vitesses 1 comprenant l'embrayage 2 est contenue dans un carter d'embrayage 5 La partie de la boîte de vitesses comprenant l'arbre primaire 4 ainsi que les autres arbres parallèles de la boîte de vitesses représentés en figure 2 sont contenus dans un carter des mécanismes 6 Un couvercle d'embiayage 7 est traversé par l'arbre d'entraînement 3 de la boîte de vitesses 1 et est muni d'un joint 8 assurant l'étanchéité entre le couveicle d'embrayage 7 et l'arbre d'entraînement 3 de la boîte de vitesses 1 Un organe de distribution hydraulique 9 est situé en partie basse de la boîte de vitesses 1 et communique avec le carter d'embrayage 5 L'organe de distribution hydraulique 9 est alimenté en huile sous pression par une pompe à huile 10 et distribue lorsque necessaπe l'huile sous pression à telle ou telle partie de l'embrayage 2As illustrated in FIG. 1, the gearbox 1 comprises a clutch 2 connected to a drive shaft 3 of the gearbox 1 in the axis of the crankshaft of the engine, not shown. The gearbox 1 also comprises a primary shaft. The part of the gearbox 1 comprising the clutch 2 is contained in a clutch housing. The part of the gearbox comprising the primary shaft 4 as well as the other parallel shafts of the gearbox. gearbox shown in Figure 2 are contained in a housing of the mechanisms 6 A clutch cover 7 is traversed by the drive shaft 3 of the gearbox 1 and is provided with a seal 8 ensuring the seal between the clutch couveicle 7 and the drive shaft 3 of the gearbox 1 A hydraulic distribution member 9 is located in the lower part of the gearbox 1 and communicates with the clutch housing 5 The hydraulic distribution member 9 is supplied with oil under pressure by an oil pump 10 and distributes when necessary pressurized oil to such or such part of the clutch 2
L'embrayage 2 comprend une cloche d'embrayage 11 occupant l'essentiel de l'encombrement extérieur de l'embrayage 2 La cloche d'embrayage 11 est entraînée en rotation de manière continue pai l'arbre d'entraînement 3 de la boîte de vitesses 1 A l'intéπeui de la cloche d'embrayage 11 se trouvent une pluralité de disques, non représentés, liés en rotation à la cloche d'embrayage 11, en regaid d'une pluralité de disques liés en rotation avec l'arbre primaire 4The clutch 2 comprises a clutch bell 11 occupying the bulk of the external dimensions of the clutch 2. The clutch bell 11 is driven in continuous rotation by the drive shaft 3 of the clutch box 11. 1 Within the clutch housing 11 are a plurality of disks, not shown, rotatably connected to the clutch housing 11, in register with a plurality of disks connected in rotation with the primary shaft 4
Lorsque l'organe de distribution hydraulique 9 envoie de l'huile sous pression dans l'embrayage 2, les disques liés à l'arbre pπmane frottent contre les disques à l'intérieur de la cloche d'embrayage 11 , et le couple moteur est transmis de l'arbre d'entraînement 3 à l'arbie primaire 4When the hydraulic distribution member 9 sends pressurized oil into the clutch 2, the discs connected to the pmanane shaft rub against the discs inside the clutch bell 11, and the engine torque is transmitted from the drive shaft 3 to the primary arbie 4
Une première roue dentée 12 est fixée sur la cloche d'embrayage 11 La rotation de la première roue dentée 12 est directement liée à la rotation du moteur du véhicule par l'arbie d'entraînement 3 de la boîte de vitesses 1, que l'embrayage 2 soit en prise ou pas Un sous-ensemble 13, libre en rotation autour d'un axe hé au carter d'embrayage non représenté, comprend une deuxième roue dentée 14 engrenant avec la première roue dentée 12 et un premiei pignon conique 15 Un moyeu d'entraînement 16 de la pompe à huile 10 est muni d'un deuxième pignon conique 17 engrenant avec le premier pignon conique 15 Le premier pignon conique 15 et le deuxième pignon conique 17 forment un renvoi d'angle 18 L'axe 16a du moyeu d'entraînement 16 de la pompe à huile 10 est sensiblement perpendiculaire à la direction commune des arbres de la boîte de vitesses et du vilebrequin du moteur La pompe à huile 10 comprend deux rotors 19 et 20 Le rotorA first toothed wheel 12 is fixed on the clutch bell 11. The rotation of the first toothed wheel 12 is directly linked to the rotation of the motor of the vehicle by the drive shaft 3 of the gearbox 1, which the clutch 2 is engaged or not A sub-assembly 13, free to rotate about an axis hé to the clutch housing not shown, comprises a second gear 14 meshing with the first gear 12 and a first bevel gear 15 A The drive hub 16 of the oil pump 10 is provided with a second bevel gear 17 meshing with the first bevel gear 15 The first bevel gear 15 and the second bevel gear 17 form a bevel gear 18 The axle 16a of The driving hub 16 of the oil pump 10 is substantially perpendicular to the common direction of the shafts of the gearbox and the crankshaft of the engine. The oil pump 10 comprises two rotors 19 and 20.
19 est entraîné par le moyeu d'entraînement 16 de la pompe à huile 10 Les deux rotors 19 et 20 présentent des formes d'engrenage conjuguées non représentées de sorte que l'huile dans laquelle tourne les rotors est comprimée dans la partie où les dentures conjuguées vont vers leur position d'engrènement et est aspirée dans la partie où les dentures s'éloignent de leur position d'engrènement La pompe à huile 10 est d'une forme générale sensiblement rectangulaire et plate La pompe à huile 10 est parallélépipédique avec une épaisseur par exemple tiois fois plus faible que la largeur L'épaisseur de la pompe 10 correspond à l'épaisseur des rotors 19, 20 La largeur de la pompe 10, visible en figure 2, correspond au diamètre des rotors 19, 20 et la longueui, visible en figure 1, correspond à la somme des diamètres des deux rotors 19 et 20 L'axe 16a du moyeu d'entraînement 16 est perpendiculaire à la forme rectangulaire plate et aux arbres de la boîte de vitesses 119 is driven by the drive hub 16 of the oil pump 10 The two rotors 19 and 20 have conjugate gear shapes not shown so that the oil in which the rotors rotates is compressed in the part where the conjugate toothings go towards their meshing position and is sucked into the part where the teeth move away from their meshing position. oil 10 is of a substantially rectangular and flat general shape The oil pump 10 is parallelepiped with a thickness for example three times smaller than the width The thickness of the pump 10 corresponds to the thickness of the rotors 19, 20 The width of the pump 10, visible in Figure 2, corresponds to the diameter of the rotors 19, 20 and the length, visible in Figure 1, corresponds to the sum of the diameters of the two rotors 19 and 20 The axis 16a of the drive hub 16 is perpendicular to the flat rectangular shape and the shafts of the gearbox 1
La longueur de l'arbre primaire 4, ainsi que les entre-axes entre les différents arbres parallèles de la boîte de vitesses 1 sont directement imposées par l'architecture de la boîte de vitesses 1 L'encombrement dû à la longueur et à la largeur de la pompe à huile 10 n'est pas pénalisant par rapport à l'encombrement des mécanismes de la boîte de vitesses L'épaisseur de la pompe à huile 10 est particulièrement réduite de manière à ne pas provoquei d'encombrement supplémentaire excessif à une boîte de vitesses 1 comprenant à la fois les mécanismes 6 et la pompe à huile 10The length of the primary shaft 4, as well as the center distance between the different parallel shafts of the gearbox 1 are directly imposed by the architecture of the gearbox 1 Clutter due to the length and the width The oil pump 10 is not disadvantageous with respect to the size of the gearbox mechanisms. The thickness of the oil pump 10 is particularly reduced so as not to cause excessive excess space in a box. 1 comprising both the mechanisms 6 and the oil pump 10
Le carter d'embrayage 5 représenté en figure 1 présente une cloison 21 séparant la partie de la boîte de vitesses 1 comprenant les mécanismes 6, de la partie de la boîte de vitesses 1 comprenant l'embrayage 2, l'organe de distribution hydraulique 9 et la pompe à huile 10 Les mécanismes 6 de la boîte de vitesses 1 peuvent être lubrifiés avec une huile différente de celle servant à l'embrayage 2The clutch housing 5 shown in Figure 1 has a partition 21 separating the part of the gearbox 1 comprising the mechanisms 6, the part of the gearbox 1 comprising the clutch 2, the hydraulic distribution member 9 and the oil pump 10 The mechanisms 6 of the gearbox 1 can be lubricated with an oil different from that used for the clutch 2
Une variante de réalisation de l'invention pourrait ne pas présenter cette cloison 21 et être munie d'un seul carter entourant a la fois l'embrayage 2 et les mécanismes 6 de la boîte de vitesses 1 On va maintenant décrire à l'aide de la figure 2, la répartition transversale de différents organes de la boîte de vitesses 1. La cloche d'embrayage 11 entraîne deux embrayages concentriques indépendants l'un de l'autre et reliés alternativement à deux arbres primaires coaxiaux 4a et 4b. La boîte de vitesses 1 comprend deux arbres secondaires 22 et 23 munis chacun de plusieurs systèmes de synchronisation non représentés Les systèmes de synchronisation permettent de solidariser avec l'arbre secondaire correspondant 22 ou 23, des pignons montés à rotation sur ledit arbre secondaire 22 ou 23. et engrenant avec des dentures des arbres primaires 4a ou 4bAn alternative embodiment of the invention may not have this partition 21 and be provided with a single casing surrounding both the clutch 2 and the mechanisms 6 of the gearbox 1 FIG. 2 will now describe the transverse distribution of various members of the gearbox 1. The clutch bell 11 drives two concentric clutches independent of one another and connected alternately to two shafts. coaxial primaries 4a and 4b. The gearbox 1 comprises two secondary shafts 22 and 23 each provided with several synchronization systems, not shown. The synchronization systems make it possible to secure with the corresponding secondary shaft 22 or 23, pinions rotatably mounted on said secondary shaft 22 or 23. and meshing with teeth of the primary shafts 4a or 4b
L'arbre secondaire 22 est muni d'un pignon d'attaque engrenant avec une couronne 24 de différentiel du véhicule L'arbre secondaire 23 n'est pas en relation d'engrènement direct avec la couronne 24 de différentiel Les rapports de la boîte de vitesses établis grâce à des systèmes de synchronisation disposés sur l'arbre secondaire 23, présentent une chaîne cinématique comprenant des pignons de renvoi montés soit sur un arbre intermédiaire 25, soit sur l'un des arbres primaires 4a ou 4b de manière à entraîner le pignon d'attaque de l'arbre secondaire 22. La boîte de vitesses 1 présente des arbres secondaires 22 et 23, ainsi qu'un arbre intermédiaire 25 dans la partie basse de la boîte de vitesses 1. Ainsi, une implantation latérale de la pompe à huile 10 est particulièrement utileThe secondary shaft 22 is provided with a pinion meshing with a ring 24 of differential of the vehicle The secondary shaft 23 is not in direct meshing relationship with the differential ring 24 The reports of the box speeds established by means of synchronization systems arranged on the secondary shaft 23, have a kinematic chain comprising deflection gears mounted either on an intermediate shaft 25, or on one of the primary shafts 4a or 4b so as to drive the pinion The gearbox 1 has secondary shafts 22 and 23, as well as an intermediate shaft 25 in the lower part of the gearbox 1. Thus, a lateral implantation of the gearbox 10 oil is particularly useful
La pompe à huile 10 présente une entrée d'huile 26 située en partie basse de la boîte de vitesses de manière à ce que l'huile ruisselant à l'intérieur du carter d'embrayage 5 puisse être récupérée par l'entrée d'huile 26.The oil pump 10 has an oil inlet 26 located in the lower part of the gearbox so that the oil flowing inside the clutch housing 5 can be recovered by the oil inlet. 26.
Le carter d'embrayage 5 présente une ouverture latérale du côté de l'organe de distribution hydraulique 9 fermée par une trappe latérale 5a La trappe latérale 5a permet d'accéder simultanément à l'organe de distribution hydraulique 9 et à la pompe à huile 10 de manière à pouvoir assurer la maintenance de l'un et de l'autre L'angle des pignons coniques 15 et 17 est de 45 ° de sorte que le renvoi d'angle, illustré sur la figure, fait sensiblement 90 ° Dans une variante, l'angle que fait l'axe 16a du moyeu d'entraînement 16 de la pompe à huile 10 avec les arbres parallèles de la boîte de vitesses peut être légèrement différent de 90 ° de manière à ce que la surface extérieure 10a de la pompe à huile 10 puisse épouser les foimes disponibles du carter des mécanismes 6 afin d'optimisei l'encombrement global de la boîte de vitesses 1 The clutch housing 5 has a lateral opening on the side of the hydraulic distribution member 9 closed by a side hatch 5a The side hatch 5a allows simultaneous access to the hydraulic distribution member 9 and to the oil pump 10 in order to be able to maintain one and the other The angle of the bevel gears 15 and 17 is 45 ° so that the bevel gear, illustrated in the figure, is substantially 90 ° Alternatively, the angle that the axis 16a of the drive hub 16 of the oil pump 10 with the parallel shafts of the gearbox may be slightly different from 90 ° so that the outer surface 10a of the oil pump 10 can match the available foimes of the housing of the mechanisms 6 in order to optimizes the overall size of the gearbox 1

Claims

REVENDICATIONS
1 - Boîte de vitesses (1) pour moteur de véhicule automobile munie d'arbres parallèles (4,22,23,25) et comprenant au moins un embrayage (2) multidisques à huile et une pompe à huile (10) pour la commande de l'embrayage (2), caractérisée par le fait que la pompe à huile (10) est entraînée mécaniquement par un moyeu (16), d'axe (16a) sensiblement perpendiculaire aux arbres (4,22,23,25) de la boîte de vitesses (1)1 - Gearbox (1) for a motor vehicle engine equipped with parallel shafts (4,22,23,25) and comprising at least one clutch (2) multidiscs oil and an oil pump (10) for the control of the clutch (2), characterized in that the oil pump (10) is driven mechanically by a hub (16) of axis (16a) substantially perpendicular to the shafts (4,22,23,25) of the gearbox (1)
2 - Boîte de vitesses (1) selon la revendication 1, dans laquelle la pompe à huile (10) est de forme générale plate, l'axe du moyeu d'entraînement (16) de ladite pompe à huile (10) étant sensiblement perpendiculaire à ladite forme plate2 - gearbox (1) according to claim 1, wherein the oil pump (10) is generally flat, the axis of the drive hub (16) of said oil pump (10) being substantially perpendicular to said flat shape
3 - Boîte de vitesses (1) selon la revendication 1 ou 2, dans laquelle l'embrayage (2) est muni d'une cloche d'embrayage (11) reliée au moteur, et que le moyeu d'entraînement (16) de la pompe à huile (10) est relié par une chaîne cinématique à la cloche d'embrayage (11)3 - gearbox (1) according to claim 1 or 2, wherein the clutch (2) is provided with a clutch bell (11) connected to the engine, and that the drive hub (16) of the oil pump (10) is connected by a drive train to the clutch housing (11)
4 - Boîte de vitesses selon la revendication 3, dans laquelle la chaîne cinématique présente un renvoi d'angle (18) à 90 °4 - Gearbox according to claim 3, wherein the kinematic chain has a 90 ° angle gear (18).
5 - Boîte de vitesses selon la revendication 3 ou 4, dans laquelle la chaîne cinématique comprend une première roue dentée (12) solidaire de la cloche d'embrayage (11), un sous-ensemble (13) muni d'une deuxième roue dentée (14) engrenant avec la première îoue dentée (12) et d'un premier pignon conique (15), le sous-ensemble (13) étant libre en rotation autour d'un axe fixe par rapport à un cartel d'embrayage (5), le moyeu d'entraînement (16) de la pompe à huile (10) étant équipé d'un deuxième pignon conique (17) engrenant avec le premier pignon conique (15)5 - Gearbox according to claim 3 or 4, wherein the kinematic chain comprises a first gear (12) integral with the clutch bell (11), a subassembly (13) provided with a second gear wheel (14) meshing with the first toothed eye (12) and a first bevel gear (15), the subassembly (13) being free to rotate about a fixed axis with respect to a clutch cartel (5); ), the drive hub (16) of the oil pump (10) being equipped with a second bevel gear (17) meshing with the first bevel gear (15)
6 - Boîte de vitesses selon l'une des revendications précédentes, dans laquelle la pompe à huile (10) est immergée en partie basse d'un carter (5) contenant l'embrayage (2) de manière à aspirer l'huile ruisselant de l'embrayage (2) 7 - Boîte de vitesses selon l'un quelconques des revendications 2 à 6, dans laquelle la pompe à huile (10) comprend deux rotors plats (19,20) côte à côte et d'axes parallèles, que ladite pompe à huile (10) est de forme générale rectangulaire, disposée le long des arbres (23,25) de la boîte de vitesses (1), à proximité d'un organe de distribution hydraulique (9)6 - gearbox according to one of the preceding claims, wherein the oil pump (10) is immersed in the lower part of a housing (5) containing the clutch (2) so as to suck the dripping oil from the clutch (2) The gearbox according to any one of claims 2 to 6, wherein the oil pump (10) comprises two flat rotors (19,20) side by side and parallel axes, that said oil pump (10 ) is of generally rectangular shape, arranged along the shafts (23,25) of the gearbox (1), close to a hydraulic distribution member (9)
8 - Boîte de vitesses selon la revendication 7, dans laquelle la pompe à huile (10) et l'organe distπbution hydraulique sont accessibles par une même trappe latérale (5a) 9 - Boîte de vitesses selon l'une des revendications précédentes, possédant deux arbres primaires (4a, 4b) reliés alternativement à deux embrayages à huile et trois autres arbres (22,23,25) munis de pignons dont un seul (22) engrène avec une couronne (24) de différentiel entraînant les roues du véhicule 8 - Gearbox according to claim 7, wherein the oil pump (10) and the hydraulic distπbution member are accessible through the same side door (5a) 9 - gearbox according to one of the preceding claims, having two primary shafts (4a, 4b) alternately connected to two oil clutches and three other shafts (22,23,25) provided with pinions, of which only one (22) meshes with a differential ring (24) driving the wheels of the vehicle
EP06743833A 2005-05-18 2006-04-24 Gearbox with lateral oil pump Withdrawn EP1888944A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0504992A FR2885980B1 (en) 2005-05-18 2005-05-18 GEARBOX WITH SIDE OIL PUMP
PCT/FR2006/050376 WO2006123079A2 (en) 2005-05-18 2006-04-24 Gearbox with lateral oil pump

Publications (1)

Publication Number Publication Date
EP1888944A2 true EP1888944A2 (en) 2008-02-20

Family

ID=34955365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06743833A Withdrawn EP1888944A2 (en) 2005-05-18 2006-04-24 Gearbox with lateral oil pump

Country Status (3)

Country Link
EP (1) EP1888944A2 (en)
FR (1) FR2885980B1 (en)
WO (1) WO2006123079A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102333974A (en) * 2009-03-05 2012-01-25 丰田自动车株式会社 Oil pump mounting structure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006035134A1 (en) 2006-07-29 2008-01-31 Zf Friedrichshafen Ag Coupling system for production and interruption of electric flux between engine and gear of motor vehicle, has valves formed in a manner such that disengaged or engaged operating condition of clutch is achieved during power supply failure
DE102008000019A1 (en) * 2008-01-09 2009-07-16 Zf Friedrichshafen Ag Automatic transmission of a motor vehicle
DE102016207696A1 (en) 2016-05-04 2017-11-09 Zf Friedrichshafen Ag Transmission with a mechanically driven on a ring gear of the transmission pump
WO2023182453A1 (en) * 2022-03-23 2023-09-28 ジヤトコ株式会社 Power transmission device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2105755A (en) * 1934-01-25 1938-01-18 Chrysler Corp Power transmission
GB536057A (en) * 1939-10-24 1941-05-01 Vega Airplane Company Multiple motor drive for aircraft
GB1375467A (en) * 1972-05-30 1974-11-27
CA1098843A (en) * 1978-10-31 1981-04-07 Versatile Manufacturing Company, A Division Of Versatile Cornat Corporation Lubrication pump and filter for axle assemblies
AU552791B2 (en) * 1981-09-19 1986-06-19 Automotive Products Plc Transmission
JPH0670458B2 (en) * 1985-09-04 1994-09-07 トヨタ自動車株式会社 Lubrication device for four-wheel drive transfer
GB2199624B (en) * 1987-01-09 1990-08-15 Automotive Products Plc A change speed transmission
DE19821164B4 (en) * 1998-05-12 2008-04-17 Volkswagen Ag Double clutch
JP4660897B2 (en) * 2000-08-11 2011-03-30 アイシン・エィ・ダブリュ株式会社 Automatic transmission case

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006123079A3 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102333974A (en) * 2009-03-05 2012-01-25 丰田自动车株式会社 Oil pump mounting structure
CN102333974B (en) * 2009-03-05 2014-08-13 丰田自动车株式会社 Oil pump mounting structure

Also Published As

Publication number Publication date
WO2006123079A3 (en) 2007-03-01
FR2885980A1 (en) 2006-11-24
WO2006123079A2 (en) 2006-11-23
FR2885980B1 (en) 2007-08-10

Similar Documents

Publication Publication Date Title
FR2658132A1 (en) INTERMEDIATE GEARBOX FOR FOUR WHEEL DRIVE VEHICLE WITH FRONT OUTPUT SHAFT IN HOMOCINETIC JOINT.
FR2849408A1 (en) TORQUE DISTRIBUTION DEVICE
EP0265297A1 (en) Differential transmission device, particularly for motor vehicles
EP3879133B1 (en) Wet dual clutch
WO2021099070A1 (en) Assembled oil-supply hub, and triple wet clutch comprising this assembled oil-supply hub
EP1888944A2 (en) Gearbox with lateral oil pump
FR2576072A1 (en) REVERSIBLE CLUTCH ASSEMBLY FOR THE MARINE
FR2509672A1 (en) FRONT AXLE GEAR ASSEMBLY COMBINED FOR DRIVE SYSTEM OF A FOUR-WHEEL DRIVE VEHICLE
EP3757414A1 (en) Torque transmission device
FR3110879A1 (en) Wet double clutch
FR3108308A1 (en) DEVICE FOR DRIVING AT LEAST ONE WHEEL OF AN AIRCRAFT LANDING GEAR
FR2630800A1 (en) DIFFERENTIAL WITH CONE WHEELS, WITH LIMITED AUTOMATIC LOCK, ESPECIALLY FOR MOTOR VEHICLES
EP0236650B1 (en) Driving device for two aligned shafts, with a differential, especially for two rear axle transmission shafts of a vehicle
WO2011101577A1 (en) Transmission member provided with a lubricating fluid pump
FR2880094A1 (en) Gear box for motor vehicle, has primary line with its rotation guided by ball bearings that are situated between drive pinion of main secondary shaft and other pinions of gearbox, where drive pinion is mounted in overhanging
EP0363257A1 (en) Kit for converting a two-wheel drive vehicle into a four-wheel drive vehicle
EP3253609B1 (en) Transmission system with hydraulic module
EP0574289B1 (en) Ground clearance in creasing gearbox for fore wheel drive, transversal engine, vehicles
FR2879703A1 (en) Double clutch system for motor vehicle, has exterior and interior clutches associated to respective input and output shafts of transmission, where interior clutch has outer chamber integrated to hub rotatably coupled with rotating hub
FR3090773A1 (en) Transmission device for motor vehicle
EP3700770B1 (en) Offset power take-off for hydraulic machine
FR2700302A1 (en) Transmission device for four-wheel drive vehicles having transverse gearbox, with locking mechanism for central differentials
FR2883345A1 (en) Planet carrier, ring gear and output shaft connecting device for transmission of motor vehicle, has casing comprising grooves cooperating with complementary grooves, and teeth forming clearances to cooperate with projections of gear
EP4180681A1 (en) Improved wet clutch for powertrain system
FR2880095A1 (en) Gear box for motor vehicle, has joints respectively assuring imperviousness to oil between primary shafts and oil between one shaft and casing so that oil for hydraulic clutches is isolated from oil for lubricating pinions

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20071218

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

DAX Request for extension of the european patent (deleted)
GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20081003