WO2019228892A1 - Assembled disc carrier and wet clutch mechanism comprising this assembled disc carrier - Google Patents

Assembled disc carrier and wet clutch mechanism comprising this assembled disc carrier Download PDF

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Publication number
WO2019228892A1
WO2019228892A1 PCT/EP2019/063258 EP2019063258W WO2019228892A1 WO 2019228892 A1 WO2019228892 A1 WO 2019228892A1 EP 2019063258 W EP2019063258 W EP 2019063258W WO 2019228892 A1 WO2019228892 A1 WO 2019228892A1
Authority
WO
WIPO (PCT)
Prior art keywords
disk carrier
hub
assembled
disk
axis
Prior art date
Application number
PCT/EP2019/063258
Other languages
French (fr)
Inventor
Arnaud DOLE
François THIBAUT
Guillaume VUAROQUEAUX
Vincent CORNET
Original Assignee
Valeo Embrayages
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 Valeo Embrayages filed Critical Valeo Embrayages
Priority to CN201980037027.9A priority Critical patent/CN112219037B/en
Publication of WO2019228892A1 publication Critical patent/WO2019228892A1/en

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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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/68—Attachments of plates or lamellae to their supports
    • F16D13/683—Attachments of plates or lamellae to their supports for clutches with multiple lamellae
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/21—Bonding by welding
    • B23K26/24—Seam welding
    • B23K26/28—Seam welding of curved planar seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/20—Bonding
    • B23K26/32—Bonding taking account of the properties of the material involved
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D13/00—Friction clutches
    • F16D13/58—Details
    • F16D13/60—Clutching elements
    • F16D13/64—Clutch-plates; Clutch-lamellae
    • F16D13/644—Hub construction
    • F16D13/646—Mounting of the discs on the hub
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
    • F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D25/00—Fluid-actuated clutches
    • F16D25/10—Clutch systems with a plurality of fluid-actuated clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0661—Hydraulically actuated multiple lamellae clutches
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D21/00—Systems comprising a plurality of actuated clutches
    • F16D21/02—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways
    • F16D21/06—Systems comprising a plurality of actuated clutches for interconnecting three or more shafts or other transmission members in different ways at least two driving shafts or two driven shafts being concentric
    • F16D2021/0676—Mechanically actuated multiple lamellae clutches

Definitions

  • the present invention relates to an assembled disk carrier and a human clutch mechanism including this assembled disk carrier.
  • the wet clutch mechanism may be a hybrid transmission clutch or a dual clutch mechanism.
  • Such a dual-clutch mechanism is intended to constitute a part of a torque transmission system, in particular for a motor vehicle or for a so-called industrial vehicle, the latter being for example a heavy vehicle, a vehicle for public transit, or a farm vehicle.
  • Patent Application EP 2905492 A2 discloses a dual-clutch mechanism for driving a motor vehicle, comprising torque input means for coupling to a crankshaft, a first torque output shaft, a second drive shaft, torque output, a first clutch capable of coupling or decoupling the torque input means and the first torque output shaft, a second clutch capable of coupling or decoupling the torque input means and the second output shaft of couple.
  • the first and second clutches respectively multidisc types, are arranged radially u n above the other.
  • Each of the multi-disk clutches have flanges rotatably connected to an input disk carrier forming the torque input means and friction discs rotatably connected to output disk carriers.
  • Axial bearings are disposed between the torque input disk carrier and the output disk carriers.
  • the torque output shafts move axially due to axial forces present at the end of the gearbox.
  • the carriers Output disks are rotatably connected to the torque output shafts via splines. This splined connection has the effect, during the torque transmission phases, to axially secure the shafts with the disk carriers.
  • the axial movement of the gearbox shafts causes the output carriers to move within the clutch mechanism.
  • the axial bearings then make it possible to transfer the axial forces within the double clutch mechanism while allowing the rotation of the disk carriers between them.
  • Axial bearings consisting of rotating rings and needles are then solicited under load. Centering of the axial bearing between the rotating mobile disk carriers is necessary to ensure longevity of this component. It is known from patent application EP 2905492 A2 to center the axial bearing on the oil supply hub of the wet double clutch mechanism with the aid of specific centering tabs. The axial bearing is no longer a standard component purchased from the catalog.
  • Another means for centering the axial bearing is to machine a cavity integrally in the central hub constituting a portion of the output disk carrier.
  • the cavity makes it possible to maintain and axially center the axial bearing between the disk carriers of the first and second clutches. This machining operation entails additional manufacturing costs.
  • the invention aims in particular to provide a simple, effective and economical solution to this problem.
  • the object of the present invention is in particular to provide a wet clutch mechanism for torque transmission system for solving at least a portion of certain disadvantages of the prior art.
  • the invention provides an assembled disc holder for a wet clutch mechanism, comprising: a cylindrical hub with axis of rotation O comprising a bearing surface perpendicular to the axis,
  • a support of revolution-shaped disks around the axis O comprising an axial extension arranged to receive the multi-disk assembly of the human clutch, an annular portion delimited by an irrigated bore; extending radially towards the interior from the axial extension in a plane perpendicular to the axis O and partially covering the bearing surface of the hub according to a covering zone,
  • the hub and the disc support being fixed together at the overlap area and the internal bore of the disc support and the bearing face of the hub forming a cavity adapted to receive and center an axial bearing.
  • the cylindrical hub and the disk support can be fixed together by laser welding by transparency at the overlap area, or by laser welding with material feed at the overlap area or by riveting at the of the recovery zone.
  • This assembled disk carrier has the advantage, thanks to the bore i nterior r of the null year portion to have a ci ciocular centering surface. Applying the disk carrier to the bearing face of the hub creates a lower cost cavity in which an axial bearing may be disposed. In this way, centering of the axial bearing is achieved without additional manufacturing step.
  • This assembled disk carrier also has the advantage of providing a flat overlap area suitable for the transparent laser welding process. The transparent laser weld avoids the use of axially bulky fastening rivets.
  • the overlap zone is disposed radially beyond the cavity.
  • This cavity has the advantage of reducing the outer diameter of the axial bearing.
  • the internal bore of the disk support is cut only by a press tool. The manufacture of the disk carrier is free of any additional machining operation.
  • This assembled disk carrier, according to the invention has the advantage of reducing the manufacturing cost of the wet clutch mechanism.
  • the bearing surface of the hub and the annular portion are applied to one another in a plane perpendicular to the axis O.
  • This assembled disk carrier has the advantage of to reduce the geometrical defects of the assembly, in particular the axial beating of the axial extension with respect to the axis O.
  • the invention may have any of the features described below that are combined with one another or taken independently of one another:
  • the laser welding can be continuous
  • the cylindrical hub may comprise an internal groove
  • the cylindrical hub may comprise an external groove
  • the cylindrical hub may comprise an annular collar of radial extension on which is formed the bearing face;
  • the inner bore of the disk support may define a first diameter D1 along the axis O
  • the bearing face of the hub may comprise an outer periphery defining a second diameter D2 along the axis O, the diameter D1 being smaller at diameter D2;
  • the inner bore of the disk support may comprise circular centering portions
  • the circular centering portions may be distributed angularly about the axis O;
  • the axial extension of the disk support may be formed of material with the annular portion;
  • the axial extension may comprise an external or internal spline.
  • the cylindrical hub can be connected to a torque input shaft
  • the cylindrical hub can be connected to a torque output shaft
  • the disk support may comprise extruded rivets, made from material from the annular portion and inserted into orifices passing through the bearing face of the cylindrical hub;
  • the internal bore of the disk carrier may comprise centering lugs offset axially with respect to the annular portion;
  • the centering tabs can be obtained by cutting and / or stamping from the inner bore of the annulai portion;
  • the laser weld can be discontinuous
  • the discontinuous laser weld can be distributed circumferentially between each centering portion
  • the discontinuous laser weld can be distributed circumferentially between each centering lug.
  • the invention is also applicable, in one of its aspects, to a multi-disk type wet clutch mechanism, controlled to selectively couple a drive shaft to a driven shaft, for example a gearbox shaft, comprising:
  • a multi-disk clutch comprising flanges rotatably connected to a torque input disk carrier and friction disks rotatably connected to a torque output disk carrier, the assembled disk carrier constituting one or the other other record carriers;
  • an axial bearing disposed axially between the torque input disk carrier and the torque output disk carrier, said axial bearing being received and centered by the cavity formed in the assembled disk carrier.
  • the humming clutch mechanism according to this other aspect of the invention has the advantage of facilitating the mounting of the axial bearing between the torque input disk carrier and the torque output disk carrier.
  • the transparent laser weld avoids the use of axially bulky fastening rivets and the integration of the axial bearing into the thickness of the disk carrier reduces the axial bulk of the wet clutch mechanism.
  • the invention also relates, in another of its aspects, to a dual wet clutch mechanism comprising a first clutch and a second clutch respectively of multidisc type, ordered to selectively couple a shaft leading to a first driven shaft and to a second driven shaft, the first and second clutches being arranged radially u n above the other,
  • each of the multi-disk clutches having flanges rotatably connected to a torque input disk carrier and rotation disks rotatably connected to a torque output disk carrier, the torque input disk carrier being common to the first and second clutch,
  • said dual clutch mechanism comprising: an assembled disk carrier incorporating all or some of the features mentioned above, constituting one or other of the torque output carriers;
  • an axial bearing disposed axially between the torque output carriers of the first and second clutches, said axial bearing being received and centered by the cavity formed in the assembled disk carrier.
  • the wet dual clutch mechanism has the advantage of facilitating the mounting of the axial bearing between the torque output carriers of the first and second clutch.
  • Transparent laser welding avoids the use of axially bulky fastening rivets and the integration of the axial bearing into the thickness of the disk carrier reduces the axial size of the wet double clutch mechanism.
  • the invention also relates to a method for manufacturing an assembled disk carrier incorporating all or some of the features mentioned above, comprising at least the following steps:
  • the transparent laser welder avoids the use of axially bulky fastening rivets.
  • Figure 1 is an axial sectional view of a wet double clutch mechanism comprising an assembled disk carrier according to a first embodiment of the invention
  • Figure 2 is an axial sectional view of the assembled disk carrier according to the first embodiment of the invention of Figure 1;
  • Figure 3 is an isometric view of the assembled disk carrier according to the first embodiment of the invention of Figure 1;
  • Figure 4 is a front view of the assembled disk carrier according to a second embodiment of the invention.
  • Figure 5 is a front view of the assembled disk carrier according to a third embodiment of the invention.
  • Figure 6 is a front view of the assembled disk carrier according to a fourth embodiment of the invention.
  • Figure 7 is a detail view of the assembled disk carrier according to the fourth embodiment of the invention of Figure 6;
  • FIGS. 1 to 3 show a first embodiment of an assembled disk carrier 30, 40 for a wet clutch mechanism of multidisc type.
  • the clutch mechanism hu mide is a wet double clutch mechanism 1 having a main axis of rotation O.
  • the double-clutch mechanism allows the torque transmission system to have an input element 2 around the O-axis at least one which is rotatably connected to a driving shaft (not shown).
  • the input element 2 is located at the rear of the double clutch mechanism hu mide 1.
  • the input element 2 generally having an "L" -shaped shape comprises an annular portion of radial orientation formed by an inlet web 3 and an orientation portion.
  • the inlet web 3 and the inlet hub 4 are solid and welded together by laser welding by transparency.
  • the hub 4 is arranged radially at an angle to the inlet web 3.
  • the inlet hub 4 is for example linked in rotation by means of the channels 5 at the outlet of a damping device (such as a double damping flywheel, etc.) whose entry is linked, in particular via a steering wheel, to the driving shaft formed by a crankshaft which rotates a motor corresponding to the motor vehicle.
  • a damping device such as a double damping flywheel, etc.
  • the inlet web 3 has, at its axially oriented outer radial end, teeth 9 which extend radially outwards and which rest on an inlet disk carrier 1 0.
  • the wet dual clutch mechanism 1 is controlled to selectively couple said drive shaft to a first driven shaft A1 and a second driven shaft A2 connected to a gearbox fitted to the motor vehicle.
  • the first driven shaft A1 and the second driven shaft A2 are coaxial.
  • the first A1 tree led is rotated when said first clutch E1 is closed and the second driven shaft A2 is rotated when said second clutch E2 is closed.
  • the wet double clutch mechanism 1 comprises a first clutch E1 and a second clutch E2, which are respectively multidisc type, and an actuating system 100 arranged to engage or disengage said first and second clutches E1, E2.
  • the wet double clutch mechanism 1 is hydraulically controlled by means of a fluid under pressure, usually oil.
  • the actuating system 100 comprises:
  • a first actuator 110 arranged to configure the first clutch E1 in a configuration between the engaged configuration and the disengaged configuration
  • a second actuator 120 arranged to configure the second clutch E2 in a configuration between the engaged configuration and the disengaged configuration
  • a housing 130 in which are housed at least (in part) the first or the second actuator 110, 120.
  • the actuation system may comprise a clutch support 140 integrated in the housing and extending axially towards the input element 2.
  • the clutch support 140 of the actuating system 100 is coupled in rotation with the housing 130.
  • a ball bearing 150 is disposed between the clutch support 140 and the input disk carrier 10.
  • the ball bearing 150 rotates the first and second clutches E1, E2 with respect to the actuating system 100.
  • ball bearing 150 is supported on the input disk carrier 10.
  • the first clutch E1 is disposed radially above the second clutch E2.
  • the multi-disk assembly of the first clutch E1 comprises flanges 11 rotatably connected to the input disk carrier and friction disks 12 rotatably connected to an output disk carrier 30.
  • the friction disks 12 are, unitarily, axially interposed between two flanges 11 successive.
  • the output disk carrier 30 of the first clutch E1 is an assembled disk carrier according to the first embodiment of the invention.
  • the assembled disk carrier 30 is rotatably linked by meshing with the friction discs 12 and by a splined connection with said first driven shaft A1.
  • the assembled disk carrier 30 comprises a cylindrical hub 31 of axis of rotation O comprising a bearing face 32 perpendicular to the axis and a disk support 33 of revolution shape around the O axis.
  • the disk support 33 comprises in particular an axial extension 34 arranged to receive the multi-disk assembly of the first clutch E1 and an annular portion 35 delimited by an internal bore 36 extending radially inwards from the axial extension 34 in a manner plane perpendicular to the axis O.
  • the annular portion 35 partially overlaps the bearing face 32 of the hub 31 according to a covering zone 37.
  • the hub 31 and the disk carrier 33 are attached together by laser-transparency welding at the overlap area 37.
  • the laser weld 39 is continuous.
  • the internal bore 36 of the disk support and the bearing face 32 of the hub 31 form a cavity 38 which receives and centers an axial bearing 51.
  • the axial bearing 51 is interposed axially between the input element 2 and the door -disque output 30.
  • the axial bearing 51 comprises an outer ring, an inner ring and needles interposed axially between the two rings.
  • the needles are angularly distributed along the axis O.
  • the outer ring of the bearing 51 is received in the cavity 38 of the assembled disk carrier 30.
  • the centering is made on the inner bore 36 of the null portion 35, said bore being cut only by a press tool. .
  • the manufacture of the disk carrier 33 is free of any additional step such as machining.
  • the thickness of the axial bearing 51 is slightly greater than the depth of the cavity 38 measured along the axis O.
  • the bearing face 32 of the hub and the annular portion 35 are applied one above the other in a plane perpendicular to the axis O.
  • the cylindrical hub 31 comprises a zero-radial flange of radial extension on which the bearing face 32 is formed.
  • the flange can be formed by means of oil passage openings.
  • the inner bore 36 of the disk carrier 33 defines a first diameter D 1 along the axis O, and the bearing face 32 of the hub comprises an outer periphery defining a second diameter D2 along the axis O.
  • the diameter D 1 is smaller than the diameter D 2 so that the overlap zone 37 is disposed radially beyond the cavity 38.
  • the overlap zone 37 is comprised radially between the diameters D 1 and D 2.
  • the multi-disk assembly of the second clutch E2 comprises flanges 21 rotatably connected to the assembled disk carrier 10 and friction disks 22 rotatably connected to an output disk carrier 40.
  • the output disk carrier 40 of the second clutch E2 is an assembled disk carrier according to the first embodiment of the invention.
  • the assembled disk carrier 40 is rotatably connected by meshing with the friction discs 22 and a fluted connection with said second driven shaft A2.
  • the assembled disc carrier 40 comprises a cylindrical hub 41 of axis of rotation O comprising a bearing face 42 perpendicular to the axis and a disc support 43 43 of revolution about the axis O
  • the disk carrier 43 includes, in particular, an axial extension 44 arranged to receive the multi-disk assembly of the second clutch E2 and an annular portion 45 delimited by an inner bore 46 extending radially inwardly from the axial extension 44 in a plane perpendicular to the axis O.
  • the annular portion 45 partially overlaps the bearing face 42 of the hub 41 according to a zone of overlap 47.
  • the axial extension 44 of the The disc support 43 which receives the friction discs 22 is formed directly of material with the annular portion 45.
  • the hub 41 and the disk carrier 43 are fixed together by laser-transparency welding at the lap region 47.
  • the laser welder 49 is continuous.
  • the inner bore 46 of the disk carrier 43 and the bearing face 42 of the hub form a cavity 48 which receives and centers a second axial bearing 52.
  • the second axial bearing 52 is axially interposed between the output disk carrier. 30 of the first clutch E1 and the output disc holder 40 of the second clutch E2.
  • a third axial bearing 53 is interposed between the outlet disc carrier 40 and a spacer spacer 54.
  • the spacer spacer 54 centered on the clutch support 1 40, bears against the bushing I nterior of the ball bearing 1 50.
  • the input disk carrier 1 0 is common to the first and second clutch E1 and E2.
  • the input disk carrier 1 0 further includes an external disk carrier 14 of the first clutch E1 and an inner disk carrier 24 of the second clutch E2.
  • the outer disk carrier 14 of the first clutch E1 comprises in particular an axial extension 15 arranged to receive the multi-disk assembly of the first clutch and an annular portion extending radially inwardly from the axial extension 15 in a plane perpendicular to the clutch. O axis.
  • the axial extension 15 forms an internal groove receiving the flanges 11 of the multidisk assembly of the first clutch E1.
  • the inner disk carrier 24 of the second clutch E2 comprises an axial extension 25 arranged to receive the multi-disk assembly of the second clutch.
  • the inner disk carrier 24 has an annular shape.
  • the axial extension 25 forms an internal groove receiving the flanges 21 of the multidisk assembly of the second clutch E2.
  • an assembled disk carrier 30 according to a second embodiment of the invention substantially similar to the first embodiment except that the inner bore 36 of the disk carrier is described will now be described with reference to FIG. 33 comprises circular centering portions 36a.
  • the centering circular portions 36a are distributed angularly around the axis O, for example at an angle of 120 degrees.
  • the circular portions extend at an angle of between 10 and 60 degrees.
  • the hub 31, 41 and the disk carrier 33, 43 are manufactured separately, the disk carrier being cut only by a press tool.
  • the disk carrier 33, 43 is applied to the hub 31, 41 at the overlap area 37, 47.
  • the hub and the disk support are fixed together by laser welding by transparency at the overlap area.
  • the transparent laser welder avoids the use of axially bulky fastening rivets.
  • the laser welder 39, 49 is conti nue and extends circumferentially along the collar of the hub 31, 41.
  • FIG. 5 an assembled disc carrier 30 according to a third embodiment of the invention substantially similar to the first embodiment except that the cylindrical hub 31 and the disc support 32 are secured together by laser welding with material supply at the overlap area 37.
  • the inner bore 36 of the disc carrier 33 includes centering circular portions 36a.
  • the laser welder 39 is in the present case discontinuous and distributed in a conventional manner between each centering portion 36a.
  • FIGS. 6 and 7 an assembled disk carrier 30 according to a fourth embodiment of the invention substantially similar to the first embodiment with the exception that the cylindrical hub 31 and the support of discs 32 are fixed together by riveting at the overlap area 37.
  • the disk carrier 33 comprises extruded rivets 60, made from material from the steel sheet.
  • the extruded rivets 60 are formed from the annular portion 35 and inserted into orifices through the bearing face 32 of the cylindrical hub 31.
  • the rivets 60 are crushed with the press so as to securely fasten the hub with the disk carrier.
  • the inner bore 36 of the disk carrier 33 comprises centering tabs 61 axially offset from the annular portion 35.
  • the centering tabs 61 are obtained by cutting and stamping from the internal bore.
  • the axially offset centering tabs 61 allow an axial bearing to be accommodated, as well as additional shims for axial adjustment of the wet double clutch mechanism 1.
  • the centering tabs 61 may be associated with other embodiments in which the hub and the disk carrier are for example fixed together by laser welding.
  • the invention is not limited to the embodiments which have just been described.
  • the disk carrier assembled according to the invention can also be adapted to the KO type clutch clutch mechanism used in hybrid transmissions to couple the thermal motor to the electric motor after the starting phase of the vehicle.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

The invention relates to an assembled disc carrier (30) for a wet clutch mechanism, including: - a cylindrical hub (31) with an axis of rotation (O) comprising a bearing face (32) perpendicular to the axis, - a disc support (33) with a rotational shape around the axis (O) comprising an axial extension (34) arranged to receive the multi-disc assembly of the wet clutch, an annular portion (35) delimited by an inner bore (36), extending radially towards the inside from the axial extension according to a plane perpendicular to the axis (O) and partially overlapping the bearing face of the hub according to an overlap zone (37), the hub (31) and the disc support (33) being secured together by through-transmission laser welding at the overlap zone, and the inner bore of the disc support and the bearing face of the hub forming a cavity (38) capable of receiving and centring an axial bearing.

Description

Porte-disque assemblé et mécanisme d’embrayage humide comprenant ce porte-disque assemblé  Assembled disc holder and wet clutch mechanism including this assembled disc holder
La présente invention concerne u n porte-disque assemblé et un mécanisme d’embrayage hu mide comprenant ce porte-disque assemblé. Le mécanisme d’embrayage humide peut être u n embrayage de coupu re pou r transmission hybride ou u n mécanisme à double embrayage hu mide. The present invention relates to an assembled disk carrier and a human clutch mechanism including this assembled disk carrier. The wet clutch mechanism may be a hybrid transmission clutch or a dual clutch mechanism.
U n tel mécanisme à double embrayage est desti né à constituer une partie d’u n système de transmission de couple, notamment pou r un véhicule automobile ou pou r un véhicule dit industriel , ce dernier étant par exemple un poids lourd, un véhicule de transport en commun , ou un véhicule agricole.  Such a dual-clutch mechanism is intended to constitute a part of a torque transmission system, in particular for a motor vehicle or for a so-called industrial vehicle, the latter being for example a heavy vehicle, a vehicle for public transit, or a farm vehicle.
La demande de brevet EP 2905492 A2 divulgue u n mécanisme à double embrayage hu mide pou r u n véhicule automobile, comprenant des moyens d’entrée de couple desti nés à être couplés à un vilebrequi n, u n premier arbre de sortie de couple, un second arbre de sortie de couple, un premier embrayage apte à coupler ou découpler les moyens d’entrée de couple et le premier arbre de sortie de couple, u n deuxième embrayage apte à coupler ou découpler les moyens d’entrée de couple et le second arbre de sortie de couple. Les premier et deuxième embrayages respectivement de type multidisques, sont disposés radialement l’u n au dessus de l’autre. Chacu n des embrayages multidisques comportent des flasques liés en rotation à u n porte-disque d’entrée formant le moyen d’entrée de couple et des disques de friction liés en rotation à des porte-disques de sortie. Des paliers axiaux sont disposés entre le porte-disque d’entrée de couple et les portes- disques de sortie.  Patent Application EP 2905492 A2 discloses a dual-clutch mechanism for driving a motor vehicle, comprising torque input means for coupling to a crankshaft, a first torque output shaft, a second drive shaft, torque output, a first clutch capable of coupling or decoupling the torque input means and the first torque output shaft, a second clutch capable of coupling or decoupling the torque input means and the second output shaft of couple. The first and second clutches respectively multidisc types, are arranged radially u n above the other. Each of the multi-disk clutches have flanges rotatably connected to an input disk carrier forming the torque input means and friction discs rotatably connected to output disk carriers. Axial bearings are disposed between the torque input disk carrier and the output disk carriers.
Lors des changements de rapport de boite de vitesses, les arbres de sortie de couple se déplacent axialement en raison d’efforts axiaux présents au sei n de la boite de vitesses. Les porte- disques de sortie sont liés en rotation aux arbres de sortie de couple par l’intermédiaire de cannelures. Cette liaison cannelée a pour effet, durant les phases de transmission de couple, de solidariser axialement les arbres avec les porte-disques. Le mouvement axial des arbres de boite de vitesses entraine un déplacement des porte-disques de sortie au sein du mécanisme d’embrayage. Les paliers axiaux permettent alors de transférer les efforts axiaux au sein du mécanisme à double embrayage tout en autorisant la rotation des porte-disques entre eux. During gearbox ratio changes, the torque output shafts move axially due to axial forces present at the end of the gearbox. The carriers Output disks are rotatably connected to the torque output shafts via splines. This splined connection has the effect, during the torque transmission phases, to axially secure the shafts with the disk carriers. The axial movement of the gearbox shafts causes the output carriers to move within the clutch mechanism. The axial bearings then make it possible to transfer the axial forces within the double clutch mechanism while allowing the rotation of the disk carriers between them.
Les paliers axiaux constitués de bagues tournantes et d’aiguilles sont alors sollicités en charge. Un centrage du palier axial entre les porte-disques mobiles en rotation est nécessaire pour garantir une longévité de ce composant. Il est connu de la demande de brevet EP 2905492 A2 de centrer le palier axial sur le moyeu d’alimentation d’huile du mécanisme à double embrayage humide à l’aide de pattes de centrage spécifiques. Le palier axial n’est alors plus un composant standard acheté sur catalogue.  Axial bearings consisting of rotating rings and needles are then solicited under load. Centering of the axial bearing between the rotating mobile disk carriers is necessary to ensure longevity of this component. It is known from patent application EP 2905492 A2 to center the axial bearing on the oil supply hub of the wet double clutch mechanism with the aid of specific centering tabs. The axial bearing is no longer a standard component purchased from the catalog.
Un autre moyen pour centrer le palier axial consiste à usiner une cavité intégralement dans le moyeu central constituant une partie du porte-disque de sortie. La cavité permet de maintenir et centrer axialement le palier axial entre les porte-disques du premier et du deuxième embrayage. Cette opération d’usinage entraine un surcoût de fabrication.  Another means for centering the axial bearing is to machine a cavity integrally in the central hub constituting a portion of the output disk carrier. The cavity makes it possible to maintain and axially center the axial bearing between the disk carriers of the first and second clutches. This machining operation entails additional manufacturing costs.
L’invention a notamment pour but d’apporter une solution simple, efficace et économique à ce problème.  The invention aims in particular to provide a simple, effective and economical solution to this problem.
Le but de la présente invention est notamment de proposer un mécanisme à embrayage humide pour système de transmission de couple permettant de résoudre au moins une partie de certains inconvénients de l’art antérieur.  The object of the present invention is in particular to provide a wet clutch mechanism for torque transmission system for solving at least a portion of certain disadvantages of the prior art.
Dans ce but, l’invention propose un porte-disque assemblé pour mécanisme d’embrayage humide, comportant: - un moyeu cylindrique d’axe de rotation O comprenant u ne face d’appui perpendiculai re à l’axe, For this purpose, the invention provides an assembled disc holder for a wet clutch mechanism, comprising: a cylindrical hub with axis of rotation O comprising a bearing surface perpendicular to the axis,
- un support de disques de forme de révolution autou r de l'axe O comprenant u ne extension axiale agencée pou r recevoir l’ensemble multidisque de l’embrayage hu mide, u ne portion annulai re déli mitée par u n alésage i ntérieu r, s’étendant radialement vers l’i ntérieu r depuis l’extension axiale selon un plan perpendiculai re à l’axe O et recouvrant partiellement la face d’appui du moyeu selon u ne zone de recouvrement,  a support of revolution-shaped disks around the axis O comprising an axial extension arranged to receive the multi-disk assembly of the human clutch, an annular portion delimited by an irrigated bore; extending radially towards the interior from the axial extension in a plane perpendicular to the axis O and partially covering the bearing surface of the hub according to a covering zone,
le moyeu et le support de disques étant fixés ensemble au niveau de la zone de recouvrement et l’alésage intérieu r du support de disque et la face d’appui du moyeu formant une cavité apte à recevoi r et centrer u n palier axial.  the hub and the disc support being fixed together at the overlap area and the internal bore of the disc support and the bearing face of the hub forming a cavity adapted to receive and center an axial bearing.
De préférence, le moyeu cylindrique et le support de disques peuvent être fixés ensemble par soudu re laser par transparence au niveau de la zone de recouvrement, ou par soudu re laser avec apport de matière au niveau de la zone de recouvrement ou par rivetage au niveau de la zone de recouvrement.  Preferably, the cylindrical hub and the disk support can be fixed together by laser welding by transparency at the overlap area, or by laser welding with material feed at the overlap area or by riveting at the of the recovery zone.
Ce porte-disque assemblé, selon l’invention, présente l’avantage, grâce à l’alésage i ntérieu r de la portion an nulai re de disposer d’u ne surface de centrage ci rculaire. L’application du support de disques sur la face d’appui du moyeu crée une cavité à moindre coût dans laquelle u n palier axial peut-être disposé. De cette manière, le centrage du palier axial est réalisé sans étape de fabrication supplémentai re. Ce porte-disque assemblé présente également l’avantage d’offri r une zone de recouvrement plane et adaptée au procédé de soudu re laser par transparence. La soudu re laser par transparence évite l’emploi de rivets de fixation encombrants axialement.  This assembled disk carrier, according to the invention, has the advantage, thanks to the bore i nterior r of the null year portion to have a ci ciocular centering surface. Applying the disk carrier to the bearing face of the hub creates a lower cost cavity in which an axial bearing may be disposed. In this way, centering of the axial bearing is achieved without additional manufacturing step. This assembled disk carrier also has the advantage of providing a flat overlap area suitable for the transparent laser welding process. The transparent laser weld avoids the use of axially bulky fastening rivets.
De préférence, la zone de recouvrement est disposée radialement au-delà de la cavité. Cette cavité présente l’avantage de rédui re le diamètre extérieu r du palier axial . Avantageusement, l’alésage intérieur du support de disque est découpé uniquement par un outillage de presse. La fabrication du support de disques est exempte de toute opération d’usinage supplémentaire. Ce porte-disque assemblé, selon l’invention, présente l’avantage, de réduire le coût de fabrication du mécanisme d’embrayage humide. Preferably, the overlap zone is disposed radially beyond the cavity. This cavity has the advantage of reducing the outer diameter of the axial bearing. Advantageously, the internal bore of the disk support is cut only by a press tool. The manufacture of the disk carrier is free of any additional machining operation. This assembled disk carrier, according to the invention, has the advantage of reducing the manufacturing cost of the wet clutch mechanism.
De préférence, la face d’appui du moyeu et la portion annulaire sont appliquées l’une sur l’autre selon un plan perpendiculaire à l’axe O. Ce porte-disque assemblé, selon l’invention, présente l’avantage, de réduire les défauts géométriques de l’assemblage, notamment le battement axial de l’extension axiale par rapport à l’axe O.  Preferably, the bearing surface of the hub and the annular portion are applied to one another in a plane perpendicular to the axis O. This assembled disk carrier, according to the invention, has the advantage of to reduce the geometrical defects of the assembly, in particular the axial beating of the axial extension with respect to the axis O.
L’invention peut présenter l’une ou l’autre des caractéristiques décrites ci-dessous combinées entre elles ou prises indépendamment les unes des autres :  The invention may have any of the features described below that are combined with one another or taken independently of one another:
- la soudure laser peut être continue ;  the laser welding can be continuous;
- le moyeu cylindrique et le support de disques sont des pièces distinctes ;  - the cylindrical hub and the disc support are separate parts;
- le moyeu cylindrique peut comprendre une cannelure interne ; the cylindrical hub may comprise an internal groove;
- le moyeu cylindrique peut comprendre une cannelure externe ;the cylindrical hub may comprise an external groove;
- Le moyeu cylindrique peut comprendre une collerette annulaire d’extension radiale sur laquelle est formée la face d’appui ; - The cylindrical hub may comprise an annular collar of radial extension on which is formed the bearing face;
- l’alésage intérieur du support de disques peut définir un premier diamètre D1 selon l’axe O, et la face d’appui du moyeu peut comprendre une périphérie externe définissant un deuxième diamètre D2 selon l’axe O, le diamètre D1 étant inférieur au diamètre D2 ;  the inner bore of the disk support may define a first diameter D1 along the axis O, and the bearing face of the hub may comprise an outer periphery defining a second diameter D2 along the axis O, the diameter D1 being smaller at diameter D2;
- l’alésage intérieur du support de disque peut comprendre des portions circulaires de centrage ;  the inner bore of the disk support may comprise circular centering portions;
- les portions circulaires de centrage peuvent être réparties angulairement autour de l’axe O ; - l’extension axiale du support de disque peut être formée de matière avec la portion annulai re ; the circular centering portions may be distributed angularly about the axis O; the axial extension of the disk support may be formed of material with the annular portion;
- l’extension axiale du support de disque peut être rapportée et fixée solidai rement en rotation avec la portion an nulaire ;  the axial extension of the disk support can be reported and fixed solidly in rotation with the annular portion;
- l’extension axiale peut comprendre une cannelu re externe ou interne.  the axial extension may comprise an external or internal spline.
- le moyeu cyli ndrique peut être con necté à u n arbre d’entrée de couple ;  the cylindrical hub can be connected to a torque input shaft;
- le moyeu cyli ndrique peut être connecté à u n arbre de sortie de couple ;  the cylindrical hub can be connected to a torque output shaft;
- le support de disques peut comprendre des rivets extrudés, issus de matière à parti r de la portion an nulaire et insérés dans des orifices traversant la face d’appui du moyeu cyli ndrique ;  the disk support may comprise extruded rivets, made from material from the annular portion and inserted into orifices passing through the bearing face of the cylindrical hub;
- l’alésage intérieu r du support de disques peut comprendre des pattes de centrage décalées axialement par rapport à la portion annulai re ;  the internal bore of the disk carrier may comprise centering lugs offset axially with respect to the annular portion;
- les pattes de centrage peuvent être obtenues par découpe et / ou emboutissage depuis l’alésage intérieur de la portion annulai re ; - The centering tabs can be obtained by cutting and / or stamping from the inner bore of the annulai portion;
- la soudu re laser peut être disconti nue ; - the laser weld can be discontinuous;
- la soudu re laser discontinue peut être répartie circonférentiellement entre chaque portion ci rculai re de centrage ;  the discontinuous laser weld can be distributed circumferentially between each centering portion;
- la soudu re laser discontinue peut être répartie circonférentiellement entre chaque patte de centrage.  the discontinuous laser weld can be distributed circumferentially between each centering lug.
L’invention a également pou r objet, selon un de ses aspects, un mécanisme d’embrayage humide de type multidisque, commandé pou r accoupler sélectivement u n arbre menant à un arbre mené, par exemple u n arbre de boite de vitesses, comprenant : The invention is also applicable, in one of its aspects, to a multi-disk type wet clutch mechanism, controlled to selectively couple a drive shaft to a driven shaft, for example a gearbox shaft, comprising:
- un porte-disque assemblé reprenant tout ou partie des caractéristiques mentionnées précédem ment; - un embrayage multidisques comportant des flasques liés en rotation à un porte-disque d’entrée de couple et des disques de friction liés en rotation à un porte-disque de sortie de couple, le porte-disque assemblé constituant l’un ou l’autre des porte-disques ; an assembled disk carrier incorporating all or some of the features mentioned above; a multi-disk clutch comprising flanges rotatably connected to a torque input disk carrier and friction disks rotatably connected to a torque output disk carrier, the assembled disk carrier constituting one or the other other record carriers;
- un palier axial disposé axialement entre le porte-disque d’entrée de couple et le porte-disque de sortie de couple, ledit palier axial étant reçu et centré par la cavité formée dans le porte-disque assemblé.  an axial bearing disposed axially between the torque input disk carrier and the torque output disk carrier, said axial bearing being received and centered by the cavity formed in the assembled disk carrier.
Le mécanisme d’embrayage hu mide, selon cet autre aspect de l’i nvention , présente l’avantage de faciliter le montage du palier axial entre le porte-disque d’entrée de couple et le porte-disque de sortie de couple. La soudu re laser par transparence évite l’emploi de rivets de fixation encombrants axialement et l’i ntégration du palier axial dans l’épaisseu r du support de disques permet de rédui re l’encombrement axial du mécanisme d’embrayage hu mide.  The humming clutch mechanism according to this other aspect of the invention has the advantage of facilitating the mounting of the axial bearing between the torque input disk carrier and the torque output disk carrier. The transparent laser weld avoids the use of axially bulky fastening rivets and the integration of the axial bearing into the thickness of the disk carrier reduces the axial bulk of the wet clutch mechanism.
Tout ou partie des caractéristiques mention nées précédem ment s’applique également à cet autre aspect de l’i nvention .  Some or all of the features mentioned above also apply to this other aspect of the invention.
L’invention a également pour objet, selon un autre de ses aspects, u n mécanisme à double embrayage humide comprenant u n premier embrayage et un deuxième embrayage respectivement de type multidisques, com mandés pou r accoupler sélectivement u n arbre menant à u n premier arbre mené et à un deuxième arbre mené, les premier et deuxième embrayages étant disposés radialement l’u n au dessus de l’autre, The invention also relates, in another of its aspects, to a dual wet clutch mechanism comprising a first clutch and a second clutch respectively of multidisc type, ordered to selectively couple a shaft leading to a first driven shaft and to a second driven shaft, the first and second clutches being arranged radially u n above the other,
chacu n des embrayages multidisques comportant des flasques liés en rotation à un porte-disque d’entrée de couple et des disques de f riction liés en rotation à u n porte-disque de sortie de couple, le porte-disque d’entrée de couple étant commun au premier et au deuxième embrayage,  each of the multi-disk clutches having flanges rotatably connected to a torque input disk carrier and rotation disks rotatably connected to a torque output disk carrier, the torque input disk carrier being common to the first and second clutch,
ledit mécanisme à double embrayage comprenant : - un porte-disque assemblé reprenant tout ou partie des caractéristiques mention nées précédemment, constituant l’u n ou l’autre des porte-disques de sortie de couple; said dual clutch mechanism comprising: an assembled disk carrier incorporating all or some of the features mentioned above, constituting one or other of the torque output carriers;
- un palier axial disposé axialement entre les porte-disques de sortie de couple du premier et du deuxième embrayage, ledit palier axial étant reçu et centré par la cavité formée dans le porte- disque assemblé.  an axial bearing disposed axially between the torque output carriers of the first and second clutches, said axial bearing being received and centered by the cavity formed in the assembled disk carrier.
Le mécanisme à double embrayage humide, selon cet autre aspect de l’invention, présente l’avantage de faciliter le montage du palier axial entre les porte-disques de sortie de couple du premier et du deuxième embrayage. La soudure laser par transparence évite l’emploi de rivets de fixation encombrants axialement et l’intégration du palier axial dans l’épaisseu r du support de disques permet de rédui re l’encombrement axial du mécanisme à double embrayage humide.  The wet dual clutch mechanism, according to this other aspect of the invention, has the advantage of facilitating the mounting of the axial bearing between the torque output carriers of the first and second clutch. Transparent laser welding avoids the use of axially bulky fastening rivets and the integration of the axial bearing into the thickness of the disk carrier reduces the axial size of the wet double clutch mechanism.
Tout ou partie des caractéristiques mention nées précédem ment s’applique également à cet autre aspect de l’i nvention .  Some or all of the features mentioned above also apply to this other aspect of the invention.
L’invention a également pou r objet u n procédé pou r fabriquer un porte-disque assemblé reprenant tout ou partie des caractéristiques mention nées précédemment, comportant au moins les étapes suivantes :  The invention also relates to a method for manufacturing an assembled disk carrier incorporating all or some of the features mentioned above, comprising at least the following steps:
fourni r un moyeu et u n support de disques découpé uniquement par un outillage de presse,  provided a hub and a disc holder cut only by press tools,
appliquer le support de disques su r le moyeu au niveau d’une zone de recouvrement,  apply the disk carrier on the hub at a covering area,
puis fixer ensemble le support de disques su r le moyeu par soudu re laser par transparence au niveau de la zone de recouvrement.  then fix the disk carrier together on the hub by laser welding by transparency at the overlap area.
Selon ce procédé, la soudu re laser par transparence évite l’emploi de rivets de fixation encombrants axialement. L’invention sera mieux comprise à la lecture de la description qui va suivre, donnée uniquement à titre d’exemple et faite en se référant aux dessins annexés dans lesquels : According to this method, the transparent laser welder avoids the use of axially bulky fastening rivets. The invention will be better understood on reading the description which follows, given solely by way of example and with reference to the appended drawings in which:
la figure 1 est une vue en coupe axiale d’un mécanisme à double embrayage humide comprenant un porte-disque assemblé selon un premier mode de mise en oeuvre de l’invention ;  Figure 1 is an axial sectional view of a wet double clutch mechanism comprising an assembled disk carrier according to a first embodiment of the invention;
la figure 2 est une vue en coupe axiale du porte-disque assemblé selon le premier mode de mise en oeuvre de l’invention de la figure 1 ;  Figure 2 is an axial sectional view of the assembled disk carrier according to the first embodiment of the invention of Figure 1;
la figure 3 est une vue isométrique du porte-disque assemblé selon le premier mode de mise en oeuvre de l’invention de la figure 1 ;  Figure 3 is an isometric view of the assembled disk carrier according to the first embodiment of the invention of Figure 1;
la figure 4 est une vue de face du porte-disque assemblé selon un deuxième mode de mise en oeuvre de l’invention ;  Figure 4 is a front view of the assembled disk carrier according to a second embodiment of the invention;
la figure 5 est une vue de face du porte-disque assemblé selon un troisième mode de mise en oeuvre de l’invention ;  Figure 5 is a front view of the assembled disk carrier according to a third embodiment of the invention;
la figure 6 est une vue de face du porte-disque assemblé selon un quatrième mode de mise en oeuvre de l’invention ;  Figure 6 is a front view of the assembled disk carrier according to a fourth embodiment of the invention;
la figure 7 est une vue de détail du porte-disque assemblé selon le quatrième mode de mise en oeuvre de l’invention de la figure 6 ;  Figure 7 is a detail view of the assembled disk carrier according to the fourth embodiment of the invention of Figure 6;
Dans la suite de la description et des revendications, on utilisera à titre non limitatif et afin d'en faciliter la compréhension, les termes « avant » ou « arrière » selon la direction par rapport à une orientation axiale déterminée par l’axe O principal de rotation de la transmission du véhicule automobile et les termes « intérieur / interne » ou « extérieur / externe » par rapport à l’axe O et suivant une orientation radiale, orthogonale à ladite orientation axiale. In the remainder of the description and the claims, the terms "before" or "backward" depending on the direction with respect to an axial orientation determined by the principal axis O will be used in a nonlimiting manner and in order to facilitate understanding thereof. of rotation of the transmission of the motor vehicle and the terms "inner / inner" or "outer / outer" with respect to the axis O and in a radial orientation, orthogonal to said axial orientation.
On a représenté sur les figures 1 à 3 un premier mode de mise en oeuvre d’un porte-disque assemblé 30, 40 pour un mécanisme d’embrayage humide de type multidisques. Dans l’exemple illustré su r la figu re 1 , le mécanisme d’embrayage hu mide est un mécanisme à double embrayage humide 1 présentant un axe principal de rotation O. FIGS. 1 to 3 show a first embodiment of an assembled disk carrier 30, 40 for a wet clutch mechanism of multidisc type. In the example illustrated in FIG. 1, the clutch mechanism hu mide is a wet double clutch mechanism 1 having a main axis of rotation O.
Le mécanisme à double embrayage hu mide 1 pou r système de transmission de couple comporte autour de l’axe O au moi ns un élément d’entrée 2 qui est lié en rotation à u n arbre menant (non représenté). L’élément d’entrée 2 est situé à l’arrière du mécanisme à double embrayage hu mide 1 .  The double-clutch mechanism allows the torque transmission system to have an input element 2 around the O-axis at least one which is rotatably connected to a driving shaft (not shown). The input element 2 is located at the rear of the double clutch mechanism hu mide 1.
Dans le premier mode de mise en oeuvre, l’élément d’entrée 2 présentant globalement u ne forme en « L » , comporte une portion annulai re d’orientation radiale formée par u n voile 3 d’entrée et u ne partie d’orientation axiale formée par u n moyeu 4. Le voile 3 d’entrée et le moyeu 4 d’entrée sont solidai res et soudés ensemble par soudage laser par transparence.  In the first embodiment, the input element 2 generally having an "L" -shaped shape comprises an annular portion of radial orientation formed by an inlet web 3 and an orientation portion. The inlet web 3 and the inlet hub 4 are solid and welded together by laser welding by transparency.
Le moyeu 4 est agencé radialement à l’i ntérieu r par rapport au voile 3 d’entrée.  The hub 4 is arranged radially at an angle to the inlet web 3.
Le moyeu 4 d’entrée est par exemple lié en rotation par l’i ntermédiai re des cannelu res 5 à la sortie d’un dispositif d’amortissement (tel qu’u n double volant amortisseu r, etc.) dont l’entrée est liée, par l’i ntermédiai re notamment d’un volant moteu r, à l’arbre menant formé par un vilebrequin qu’entraîne en rotation un moteu r équipant le véhicule automobile.  The inlet hub 4 is for example linked in rotation by means of the channels 5 at the outlet of a damping device (such as a double damping flywheel, etc.) whose entry is linked, in particular via a steering wheel, to the driving shaft formed by a crankshaft which rotates a motor corresponding to the motor vehicle.
Le voile 3 d’entrée comporte, à son extrémité radiale externe d’orientation axiale, des dents 9 qui s’étendent radialement vers l’extérieu r et qui s’appuient su r un porte-disque d’entrée 1 0.  The inlet web 3 has, at its axially oriented outer radial end, teeth 9 which extend radially outwards and which rest on an inlet disk carrier 1 0.
Le mécanisme à double embrayage humide 1 est com mandé pou r accoupler sélectivement ledit arbre menant à u n premier arbre A1 mené et à un deuxième arbre A2 mené reliés à une boîte de vitesses équipant le véhicule automobile.  The wet dual clutch mechanism 1 is controlled to selectively couple said drive shaft to a first driven shaft A1 and a second driven shaft A2 connected to a gearbox fitted to the motor vehicle.
De préférence, le premier arbre A1 mené et le deuxième arbre A2 mené sont coaxiaux. Le premier arbre A1 mené est entraîné en rotation lorsque ledit premier embrayage E1 est fermé et le deuxième A2 arbre mené est entraîné en rotation lorsque ledit deuxième embrayage E2 est fermé. Preferably, the first driven shaft A1 and the second driven shaft A2 are coaxial. The first A1 tree led is rotated when said first clutch E1 is closed and the second driven shaft A2 is rotated when said second clutch E2 is closed.
Le mécanisme à double embrayage humide 1 comporte un premier embrayage E1 et un deuxième embrayage E2, qui sont respectivement de type multidisques, ainsi qu’un système d’actionnement 100 agencé pour embrayer ou débrayer lesdits premier et deuxième embrayages E1, E2.  The wet double clutch mechanism 1 comprises a first clutch E1 and a second clutch E2, which are respectively multidisc type, and an actuating system 100 arranged to engage or disengage said first and second clutches E1, E2.
Le mécanisme à double embrayage humide 1 est commandé hydrauliquement par l’intermédiaire d’un fluide sous pression, généralement de l’huile. Le système d’actionnement 100 comprend :  The wet double clutch mechanism 1 is hydraulically controlled by means of a fluid under pressure, usually oil. The actuating system 100 comprises:
un premier actionneur 110 agencé pour configurer le premier embrayage E1 dans une configuration comprise entre la configuration embrayée et la configuration débrayée ;  a first actuator 110 arranged to configure the first clutch E1 in a configuration between the engaged configuration and the disengaged configuration;
un deuxième actionneur 120 agencé pour configurer le deuxième embrayage E2 dans une configuration comprise entre la configuration embrayée et la configuration débrayée ;  a second actuator 120 arranged to configure the second clutch E2 in a configuration between the engaged configuration and the disengaged configuration;
un carter 130 dans lequel sont logés au moins (en partie) le premier ou le deuxième actionneur 110, 120.  a housing 130 in which are housed at least (in part) the first or the second actuator 110, 120.
Par exemple, le système d’actionnement peut comprendre un support d’embrayage 140 intégré dans le carter et s’étendant axialement en direction de l’élément d’entrée 2. Le support d’embrayage 140 du système d’actionnement 100 est couplé en rotation avec le carter 130.  For example, the actuation system may comprise a clutch support 140 integrated in the housing and extending axially towards the input element 2. The clutch support 140 of the actuating system 100 is coupled in rotation with the housing 130.
Un roulement à billes 150 est disposé entre le support d’embrayage 140 et le porte-disque d’entrée 10. Le roulement à billes 150 guide en rotation les premier et deuxième embrayages E1, E2 par rapport au système d’actionnement 100. Le roulement à billes 150 est en appui sur le porte-disque d’entrée 10.  A ball bearing 150 is disposed between the clutch support 140 and the input disk carrier 10. The ball bearing 150 rotates the first and second clutches E1, E2 with respect to the actuating system 100. ball bearing 150 is supported on the input disk carrier 10.
Comme illustré sur la figure 1, le premier embrayage E1 est disposé radialement au dessus du deuxième embrayage E2. L’ensemble multidisques du premier embrayage E1 comporte des flasques 11 liés en rotation au porte-disque d’entrée et des disques de friction 12 liés en rotation à un porte-disque de sortie 30. Les disques de friction 12 sont, unitairement, axialement interposés entre deux flasques 11 successifs. As illustrated in Figure 1, the first clutch E1 is disposed radially above the second clutch E2. The multi-disk assembly of the first clutch E1 comprises flanges 11 rotatably connected to the input disk carrier and friction disks 12 rotatably connected to an output disk carrier 30. The friction disks 12 are, unitarily, axially interposed between two flanges 11 successive.
Le porte-disque de sortie 30 du premier embrayage E1 est un porte-disque assemblé selon le premier mode de mise en oeuvre de l’invention. Le porte-disque assemblé 30 est lié en rotation par engrènement avec les disques de friction 12 et par une liaison cannelée avec ledit premier arbre A1 mené.  The output disk carrier 30 of the first clutch E1 is an assembled disk carrier according to the first embodiment of the invention. The assembled disk carrier 30 is rotatably linked by meshing with the friction discs 12 and by a splined connection with said first driven shaft A1.
Comme illustré sur la figure 2, le porte-disque assemblé 30 comprend un moyeu cylindrique 31 d’axe de rotation O comprenant une face d’appui 32 perpendiculaire à l’axe et un support de disques 33 de forme de révolution autour de l'axe O.  As illustrated in FIG. 2, the assembled disk carrier 30 comprises a cylindrical hub 31 of axis of rotation O comprising a bearing face 32 perpendicular to the axis and a disk support 33 of revolution shape around the O axis.
Le support de disques 33 comprend notamment une extension axiale 34 agencée pour recevoir l’ensemble multidisque du premier embrayage E1 et une portion annulaire 35 délimitée par un alésage intérieur 36, s’étendant radialement vers l’intérieur depuis l’extension axiale 34 selon un plan perpendiculaire à l’axe O. La portion annulaire 35 recouvre partiellement la face d’appui 32 du moyeu 31 selon une zone de recouvrement 37.  The disk support 33 comprises in particular an axial extension 34 arranged to receive the multi-disk assembly of the first clutch E1 and an annular portion 35 delimited by an internal bore 36 extending radially inwards from the axial extension 34 in a manner plane perpendicular to the axis O. The annular portion 35 partially overlaps the bearing face 32 of the hub 31 according to a covering zone 37.
Le moyeu 31 et le support de disques 33 sont fixés ensemble par soudure laser par transparence au niveau de la zone de recouvrement 37. La soudure laser 39 est continue.  The hub 31 and the disk carrier 33 are attached together by laser-transparency welding at the overlap area 37. The laser weld 39 is continuous.
L’alésage intérieur 36 du support de disques et la face d’appui 32 du moyeu 31 forment une cavité 38 qui reçoit et centre un palier axial 51. Le palier axial 51 est intercalé axialement entre l’élément d’entrée 2 et le porte-disque de sortie 30.  The internal bore 36 of the disk support and the bearing face 32 of the hub 31 form a cavity 38 which receives and centers an axial bearing 51. The axial bearing 51 is interposed axially between the input element 2 and the door -disque output 30.
Le palier axial 51 comprend une bague extérieure, une bague intérieure et des aiguilles interposées axialement entre les deux bagues. Les aiguilles sont réparties angulairement selon l’axe O. La bague extérieu re du palier 51 est reçue dans la cavité 38 du porte-disque assemblé 30. Le centrage se fait su r l’alésage intérieu r 36 de la portion an nulai re 35, ledit alésage étant découpé uniquement par u n outillage de presse. La fabrication du support de disques 33 est exempte d’étape supplémentai re telle que de l’usinage. The axial bearing 51 comprises an outer ring, an inner ring and needles interposed axially between the two rings. The needles are angularly distributed along the axis O. The outer ring of the bearing 51 is received in the cavity 38 of the assembled disk carrier 30. The centering is made on the inner bore 36 of the null portion 35, said bore being cut only by a press tool. . The manufacture of the disk carrier 33 is free of any additional step such as machining.
L’épaisseu r du palier axial 51 est légèrement supérieu re à la profondeu r de la cavité 38 mesu rée selon l’axe O. Ai nsi , la combinaison de la soudu re laser par transparence et le placement du palier axial au sei n de la cavité permet de rédui re l’encombrement axial du mécanisme à double embrayage humide.  The thickness of the axial bearing 51 is slightly greater than the depth of the cavity 38 measured along the axis O. Thus, the combination of the laser weld by transparency and the placement of the axial bearing at the end of the cavity reduces the axial size of the wet double clutch mechanism.
La face d’appui 32 du moyeu et la portion annulai re 35 sont appliquées l’u ne su r l’autre selon un plan perpendiculai re à l’axe O.  The bearing face 32 of the hub and the annular portion 35 are applied one above the other in a plane perpendicular to the axis O.
Le moyeu cyli ndrique 31 comprend une collerette an nulai re d’extension radiale sur laquel le est formée la face d’appui 32. La collerette an nulai re peut comprendre des ouvertu res de passage de passage d’huile.  The cylindrical hub 31 comprises a zero-radial flange of radial extension on which the bearing face 32 is formed. The flange can be formed by means of oil passage openings.
L’alésage i ntérieur 36 du support de disques 33 défi nit u n premier diamètre D 1 selon l’axe O, et la face d’appui 32 du moyeu comprend u ne périphérie externe défi nissant un deuxième diamètre D2 selon l’axe O. Le diamètre D 1 est inférieu r au diamètre D2 de sorte que la zone de recouvrement 37 est disposée radialement au delà de la cavité 38.  The inner bore 36 of the disk carrier 33 defines a first diameter D 1 along the axis O, and the bearing face 32 of the hub comprises an outer periphery defining a second diameter D2 along the axis O. The diameter D 1 is smaller than the diameter D 2 so that the overlap zone 37 is disposed radially beyond the cavity 38.
La zone de recouvrement 37 est comprise radialement entre les diamètres D 1 et D2.  The overlap zone 37 is comprised radially between the diameters D 1 and D 2.
L’ensemble multidisques du deuxième embrayage E2 comporte des flasques 21 liés en rotation au porte-disque assemblé 1 0 et des disques de friction 22 liés en rotation à un porte-disque de sortie 40.  The multi-disk assembly of the second clutch E2 comprises flanges 21 rotatably connected to the assembled disk carrier 10 and friction disks 22 rotatably connected to an output disk carrier 40.
Le porte-disque de sortie 40 du deuxième embrayage E2 est un porte-disque assemblé selon le premier mode de mise en oeuvre de l’invention. Le porte-disque assemblé 40 est lié en rotation par engrènement avec les disques de friction 22 et par u ne liaison cannelée avec ledit deuxième arbre A2 mené. The output disk carrier 40 of the second clutch E2 is an assembled disk carrier according to the first embodiment of the invention. The assembled disk carrier 40 is rotatably connected by meshing with the friction discs 22 and a fluted connection with said second driven shaft A2.
Le porte-disque assemblé 40 comprend un moyeu cylindrique 41 d’axe de rotation O comprenant une face d’appui 42 perpendiculai re à l’axe et u n support de disques 43 de forme de révolution autour de l'axe O  The assembled disc carrier 40 comprises a cylindrical hub 41 of axis of rotation O comprising a bearing face 42 perpendicular to the axis and a disc support 43 43 of revolution about the axis O
Le support de disques 43 comprend notam ment une extension axiale 44 agencée pour recevoi r l’ensemble multidisque du deuxième embrayage E2 et une portion annulai re 45 déli mitée par u n alésage i ntérieu r 46, s’étendant radialement vers l’intérieu r depuis l’extension axiale 44 selon u n plan perpendiculaire à l’axe O. La portion annulai re 45 recouvre partiellement la face d’appui 42 du moyeu 41 selon u ne zone de recouvrement 47. Dans le cas présent, l’extension axiale 44 du support de disques 43 qui reçoit les disques de friction 22 est formée directement de matière avec la portion annulai re 45.  The disk carrier 43 includes, in particular, an axial extension 44 arranged to receive the multi-disk assembly of the second clutch E2 and an annular portion 45 delimited by an inner bore 46 extending radially inwardly from the axial extension 44 in a plane perpendicular to the axis O. The annular portion 45 partially overlaps the bearing face 42 of the hub 41 according to a zone of overlap 47. In this case, the axial extension 44 of the The disc support 43 which receives the friction discs 22 is formed directly of material with the annular portion 45.
Le moyeu 41 et le support de disques 43 sont fixés ensemble par soudu re laser par transparence au niveau de la zone de recouvrement 47. La soudu re laser 49 est continue.  The hub 41 and the disk carrier 43 are fixed together by laser-transparency welding at the lap region 47. The laser welder 49 is continuous.
L’alésage intérieu r 46 du support de disques 43 et la face d’appui 42 du moyeu forment une cavité 48 qui reçoit et centre u n deuxième palier axial 52. Le deuxième palier axial 52 est i ntercalé axialement entre le porte-disque de sortie 30 du premier embrayage E1 et le porte-disque de sortie 40 du deuxième embrayage E2.  The inner bore 46 of the disk carrier 43 and the bearing face 42 of the hub form a cavity 48 which receives and centers a second axial bearing 52. The second axial bearing 52 is axially interposed between the output disk carrier. 30 of the first clutch E1 and the output disc holder 40 of the second clutch E2.
U n troisième palier axial 53 est i nterposé entre le porte- disque de sortie 40 et une cale d’entretoisement 54. La cale d’entretoisement 54, centrée su r le support d’embrayage 1 40, est en appui su r la bague i ntérieu re du roulement à bille 1 50.  A third axial bearing 53 is interposed between the outlet disc carrier 40 and a spacer spacer 54. The spacer spacer 54, centered on the clutch support 1 40, bears against the bushing I nterior of the ball bearing 1 50.
Le porte-disque d’entrée 1 0 est commun au premier et au deuxième embrayage E1 et E2. Le porte-disque d’entrée 1 0 comporte, en outre, u n porte-disque extérieu r 14 du premier embrayage E1 et un porte-disque intérieur 24 du deuxième embrayage E2. The input disk carrier 1 0 is common to the first and second clutch E1 and E2. The input disk carrier 1 0 further includes an external disk carrier 14 of the first clutch E1 and an inner disk carrier 24 of the second clutch E2.
Le porte-disque extérieur 14 du premier embrayage E1 comprend notamment une extension axiale 15 agencée pour recevoir l’ensemble multidisque du premier embrayage et une portion annulaire s’étendant radialement vers l’intérieur depuis l’extension axiale 15 selon un plan perpendiculaire à l’axe O.  The outer disk carrier 14 of the first clutch E1 comprises in particular an axial extension 15 arranged to receive the multi-disk assembly of the first clutch and an annular portion extending radially inwardly from the axial extension 15 in a plane perpendicular to the clutch. O axis.
L’extension axiale 15 forme une cannelure interne recevant les flasques 11 de l’ensemble multidisque du premier embrayage E1.  The axial extension 15 forms an internal groove receiving the flanges 11 of the multidisk assembly of the first clutch E1.
Le porte-disque intérieur 24 du deuxième embrayage E2 comprend une extension axiale 25 agencée pour recevoir l’ensemble multidisque du deuxième embrayage. Le porte-disque intérieur 24 présente une forme annulaire.  The inner disk carrier 24 of the second clutch E2 comprises an axial extension 25 arranged to receive the multi-disk assembly of the second clutch. The inner disk carrier 24 has an annular shape.
L’extension axiale 25 forme une cannelure interne recevant les flasques 21 de l’ensemble multidisque du deuxième embrayage E2.  The axial extension 25 forms an internal groove receiving the flanges 21 of the multidisk assembly of the second clutch E2.
On va maintenant décrire en référence à la figure 4, un porte- disque assemblé 30 selon un deuxième mode de réalisation de l’invention sensiblement similaire au premier mode de réalisation à l’exception du fait que l’alésage intérieur 36 du support de disques 33 comprend des portions circulaires 36a de centrage.  4, an assembled disk carrier 30 according to a second embodiment of the invention substantially similar to the first embodiment except that the inner bore 36 of the disk carrier is described will now be described with reference to FIG. 33 comprises circular centering portions 36a.
Les portions circulaires 36a de centrage sont réparties angulairement autour de l’axe O, par exemple selon un angle de 120 degrés. Les portions circulaires s’étendent selon un angle compris entre 10 et 60 degrés.  The centering circular portions 36a are distributed angularly around the axis O, for example at an angle of 120 degrees. The circular portions extend at an angle of between 10 and 60 degrees.
Pour assurer un bon centrage du palier axial 51, on prévoit au minimum trois portions circulaires. Le centrage du palier axial 51 se fait dans ce cas par des portions découpées uniquement par un outillage de presse. La précision de la découpe est ici concentrée sur trois zones au lieu d’un pourtour s’étendant sur 360 degrés. Le coût de fabrication de ce porte-disque assemblé est encore réduit. On va maintenant décrire la fabrication du porte-disque assemblé 30, 40 suivant le premier mode de mise en oeuvre de l’i nvention com me illustré aux figu res 1 à 3. La fabrication comporte, entre autre, les étapes suivantes : To ensure proper centering of the axial bearing 51, at least three circular portions are provided. The centering of the axial bearing 51 is in this case by portions cut only by press tooling. The precision of the cut is here concentrated on three zones instead of a 360-degree circumference. The manufacturing cost of this assembled disk carrier is further reduced. We will now describe the manufacture of assembled disk carrier 30, 40 according to the first embodiment of the invention as illustrated in Figures 1 to 3. The manufacture comprises, inter alia, the following steps:
Selon u ne première étape, le moyeu 31 , 41 et le support de disques 33, 43 sont fabriqués séparément, le support de disque étant uniquement découpé par u n outillage de presse.  According to a first step, the hub 31, 41 and the disk carrier 33, 43 are manufactured separately, the disk carrier being cut only by a press tool.
Selon une deuxième étape, le support de disques 33, 43 est appliqué sur le moyeu 31 , 41 au niveau de la zone de recouvrement 37, 47.  In a second step, the disk carrier 33, 43 is applied to the hub 31, 41 at the overlap area 37, 47.
Selon u ne troisième étape, le moyeu et le support de disques sont fixés ensemble par soudu re laser par transparence au niveau de la zone de recouvrement.  According to a third step, the hub and the disk support are fixed together by laser welding by transparency at the overlap area.
Selon ce procédé, la soudu re laser par transparence évite l’emploi de rivets de fixation encombrants axialement. La soudu re laser 39, 49 est conti nue et s’étend circonférentiellement le long de la collerette du moyeu 31 , 41 .  According to this method, the transparent laser welder avoids the use of axially bulky fastening rivets. The laser welder 39, 49 is conti nue and extends circumferentially along the collar of the hub 31, 41.
On va mai ntenant décri re en référence à la figu re 5, u n porte- disque assemblé 30 selon un troisième mode de réalisation de l’i nvention sensiblement similai re au premier mode de réalisation à l’exception du fait que le moyeu cyli ndrique 31 et le support de disques 32 sont fixés ensemble par soudu re laser avec apport de matière au niveau de la zone de recouvrement 37. L’alésage intérieu r 36 du support de disques 33 comprend des portions circulai res 36a de centrage. La soudu re laser 39 est dans le cas présent discontinue et répartie ci rconférentiellement entre chaque portion ci rculai re 36a de centrage.  Reference may be made to FIG. 5, an assembled disc carrier 30 according to a third embodiment of the invention substantially similar to the first embodiment except that the cylindrical hub 31 and the disc support 32 are secured together by laser welding with material supply at the overlap area 37. The inner bore 36 of the disc carrier 33 includes centering circular portions 36a. The laser welder 39 is in the present case discontinuous and distributed in a conventional manner between each centering portion 36a.
On va maintenant décri re en référence aux figu res 6 et 7, u n porte-disque assemblé 30 selon un quatrième mode de réalisation de l’i nvention sensiblement similai re au premier mode de réalisation à l’exception du fait que le moyeu cyli ndrique 31 et le support de disques 32 sont fixés ensemble par rivetage au niveau de la zone de recouvrement 37. Reference will now be made to FIGS. 6 and 7, an assembled disk carrier 30 according to a fourth embodiment of the invention substantially similar to the first embodiment with the exception that the cylindrical hub 31 and the support of discs 32 are fixed together by riveting at the overlap area 37.
Dans cet exemple, le support de disques 33 comprend des rivets extrudés 60, issus de matière à parti r de la tôle d’acier. Les rivets extrudés 60 sont formés à parti r de la portion an nulaire 35 et insérés dans des orifices traversant la face d’appui 32 du moyeu cyli ndrique 31 . Lors de l’assemblage du porte-disque, les rivets 60 sont écrasés à la presse de manière à fixer solidement le moyeu avec le support de disques.  In this example, the disk carrier 33 comprises extruded rivets 60, made from material from the steel sheet. The extruded rivets 60 are formed from the annular portion 35 and inserted into orifices through the bearing face 32 of the cylindrical hub 31. When assembling the disk carrier, the rivets 60 are crushed with the press so as to securely fasten the hub with the disk carrier.
De manière addition nelle, l’alésage intérieu r 36 du support de disques 33 comprend des pattes de centrage 61 décalées axialement par rapport à la portion annulai re 35. Les pattes de centrage 61 sont obtenues par découpe et emboutissage depuis l’alésage intérieu r 36 de la portion an nulai re 35. Les pattes de centrage 61 décalées axialement permettent de loger u n palier axial ai nsi que des cales additionnelles de réglage axial du mécanisme à double embrayage humide 1 . Avantageusement, il est possible de centrer u n composant ayant une épaisseu r supérieu re à l’épaisseu r de la tôle qui constitue le support de disques 33.  Additionally, the inner bore 36 of the disk carrier 33 comprises centering tabs 61 axially offset from the annular portion 35. The centering tabs 61 are obtained by cutting and stamping from the internal bore. The axially offset centering tabs 61 allow an axial bearing to be accommodated, as well as additional shims for axial adjustment of the wet double clutch mechanism 1. Advantageously, it is possible to center a component having a thickness greater than the thickness of the sheet which constitutes the disk support 33.
Les pattes de centrage 61 peuvent être associées à d’autres modes de réalisation dans lesquels le moyeu et le support de disques sont par exemple fixés ensemble par soudu re laser.  The centering tabs 61 may be associated with other embodiments in which the hub and the disk carrier are for example fixed together by laser welding.
L’invention n’est pas li mitée aux exemples de réalisation qui vien nent d’être décrit. Le porte-disque assemblé selon l’i nvention peut conveni r également au mécanisme d’embrayage de coupu re, de type KO, utilisé dans les transmissions hybrides pou r coupler le moteu r thermique au moteur électrique après la phase de démarrage du véhicule.  The invention is not limited to the embodiments which have just been described. The disk carrier assembled according to the invention can also be adapted to the KO type clutch clutch mechanism used in hybrid transmissions to couple the thermal motor to the electric motor after the starting phase of the vehicle.

Claims

REVENDICATIONS
1 . Porte-disque assemblé (30, 40) pou r mécanisme d’embrayage humide, comportant: 1. An assembled disk carrier (30, 40) for a wet clutch mechanism, comprising:
- un moyeu cylindrique (31 , 41 ) d’axe de rotation (O) comprenant une face d’appui (32, 42) perpendiculai re à l’axe,  a cylindrical hub (31, 41) with axis of rotation (O) comprising a bearing face (32, 42) perpendicular to the axis,
- un support de disques (33, 43) de forme de révolution autou r de l'axe O comprenant une extension axiale (34, 44) agencée pou r recevoi r l’ensemble multidisque de l’embrayage hu mide, une portion annulai re (35, 45) délimitée par un alésage intérieu r (36, 46) , s’étendant radialement vers l’i ntérieu r depuis l’extension axiale selon u n plan perpendiculai re à l’axe (O) et recouvrant partiellement la face d’appui du moyeu selon une zone de recouvrement (37, 47) , caractérisé en ce que le moyeu (31 , 41 ) et le support de disques (33, 43) sont fixés ensemble au niveau de la zone de recouvrement (37, 47) et l’alésage intérieu r (36, 46) du support de disque et la face d’appui du moyeu forment une cavité (38, 48) apte à recevoi r et centrer un palier axial.  a rotor-shaped disc support (33, 43) around the axis O comprising an axial extension (34, 44) arranged to receive the multi-disk assembly of the human clutch, an annular portion (35, 45) delimited by an internal bore (36, 46) extending radially inwardly from the axial extension in a plane perpendicular to the axis (O) and partially covering the face of the supporting the hub according to an overlap zone (37, 47), characterized in that the hub (31, 41) and the disk carrier (33, 43) are fixed together at the overlap area (37, 47). ) and the inner bore (36, 46) of the disk support and the bearing surface of the hub form a cavity (38, 48) adapted to receive and center an axial bearing.
2. Porte-disque assemblé selon la revendication 1 , dans lequel l’alésage intérieu r (36, 46) du support de disque est découpé uniquement par un outillage de presse. An assembled disk carrier according to claim 1, wherein the inner bore (36,46) of the disk carrier is cut only by press tooling.
3. Porte-disque assemblé selon l’une des revendications 1 ou 2, dans lequel le moyeu (31 , 41 ) comprend une collerette annulai re d’extension radiale su r laquelle est formée la face d’appui (32, 42). 3. An assembled disk carrier according to one of claims 1 or 2, wherein the hub (31, 41) comprises an annular flange of radial extension on which is formed the bearing face (32, 42).
4. Porte-disque assemblé selon l’u ne quelconque des revendications 1 à 3, dans lequel l’alésage intérieu r (36, 46) du support de disques définit u n premier diamètre D1 selon l’axe O, et la face d’appui (32, 42) du moyeu comprend u ne périphérie externe défi nissant un deuxième diamètre D2 selon l’axe O, le diamètre D 1 étant i nférieu r au diamètre D2. An assembled disk carrier according to any one of claims 1 to 3, wherein the inner bore (36, 46) of the disk carrier defines a first diameter D1 along the axis O, and the face of support (32, 42) of the hub comprises an outer periphery defining a second diameter D2 along the axis O, the diameter D 1 being smaller than the diameter D 2.
5. Porte-disque assemblé selon l’u ne quelconque des revendications précédentes, dans lequel l’alésage i ntérieu r (36, 46) du support de disque comprend des portions ci rculai res (36a, 46a) de centrage ou des pattes de centrage (61 ) décalées axialement par rapport à la portion an nulai re (35, 45). An assembled disk carrier as claimed in any one of the preceding claims, wherein the lower bore (36, 46) of the disk carrier comprises centering portions (36a, 46a) or tabs centering (61) axially offset relative to the null year portion (35,45).
6. Porte-disque assemblé selon la revendication précédente, dans lequel les portions circulaires (36a, 46a) de centrage ou les pattes de centrages (61 ) sont réparties angulai rement autou r de l’axe O. 6. The assembled disk carrier according to the preceding claim, wherein the circular portions (36a, 46a) of centering or the centering tabs (61) are angularly distributed around the axis O.
7. Porte-disque assemblé selon l’u ne quelconque des revendications précédentes, dans lequel l’extension axiale (34, 44) du support de disque (33, 43) est formée de matière avec la portion annulai re (35, 45). An assembled disk carrier according to any one of the preceding claims, wherein the axial extension (34,44) of the disk carrier (33,43) is formed of material with the annular portion (35,45). .
8. Porte-disque assemblé selon l’u ne quelconque des revendications 1 à 6 , dans lequel l’extension axiale (34, 44) du support de disque (33, 43) est rapportée et fixée solidai rement en rotation avec la portion annulai re (35, 45) . An assembled disk carrier according to any one of claims 1 to 6, wherein the axial extension (34,44) of the disk carrier (33,43) is attached and fixed firmly in rotation with the annular portion. re (35, 45).
9. Porte-disque assemblé selon l’u ne quelconque des revendications précédentes, dans lequel le moyeu cylindrique (31 , 41 ) et le support de disques (33, 43) sont fixés ensemble par soudu re laser par transparence au niveau de la zone de recouvrement, ou par soudu re laser avec apport de matière au niveau de la zone de recouvrement ou par rivetage au niveau de la zone de recouvrement. An assembled disk carrier according to any one of the preceding claims, wherein the cylindrical hub (31, 41) and the disk carrier (33, 43) are secured together by laser-beam transparency at the zone level. covering, or by laser welding with material supply at the overlap area or by riveting at the overlap area.
1 0. Mécanisme d’embrayage hu mide de type multidisque, commandé pou r accoupler sélectivement u n arbre menant à u n arbre mené, par exemple u n arbre de boite de vitesses, comprenant : A multi-disk type clutch mechanism, controlled to selectively couple a drive shaft to a driven shaft, for example a gearbox shaft, comprising:
- un porte-disque assemblé (30, 40) selon l’u ne quelconque des revendications précédentes ;  an assembled disk carrier (30, 40) according to any one of the preceding claims;
- un embrayage multidisques comportant des flasques ( 1 1 , 21 ) liés en rotation à u n porte-disque d’entrée de couple et des disques de friction (1 2, 22) liés en rotation à u n porte-disque de sortie de couple, le porte-disque assemblé (30, 40) constituant l’u n ou l’autre des porte-disques ;  a multi-disk clutch comprising flanges (1 1, 21) rotatably connected to a torque input disk carrier and friction disks (1 2, 22) rotatably connected to a torque output disk carrier, the assembled disk carrier (30, 40) constituting one or the other of the disk carriers;
- un palier axial (51 ) disposé axialement entre le porte-disque d’entrée de couple et le porte-disque de sortie de couple caractérisé en ce que le palier axial (51 ) est reçu et centré par la cavité (38, 48) formée dans le porte-disque assemblé (30, 40).  an axial bearing (51) arranged axially between the torque input disc holder and the torque output disc holder, characterized in that the axial bearing (51) is received and centered by the cavity (38, 48) formed in the assembled disk carrier (30, 40).
1 1 . Mécanisme à double embrayage humide comprenant un premier embrayage (E1 ) et u n deuxième embrayage (E2) respectivement de type multidisques, com mandés pou r accoupler sélectivement un arbre menant à u n premier arbre mené et à un deuxième arbre mené, 1 1. A dual wet clutch mechanism comprising a first clutch (E1) and a second clutch (E2) respectively of multidisc type, controlled to selectively couple a drive shaft to a first driven shaft and a second driven shaft,
les premier et deuxième embrayages (E1 , E2) étant disposés radialement l’u n au dessus de l’autre,  the first and second clutches (E1, E2) being arranged radially u n above the other,
chacu n des embrayages multidisques comportant des flasques (1 1 , 21 ) liés en rotation à un porte-disque d’entrée de couple et des disques de friction (1 2, 22) liés en rotation à u n porte- disque de sortie de couple, le porte-disque d’entrée de couple étant commun au premier et au deuxième embrayage,  each of the multi-disk clutches having flanges (1 1, 21) rotatably connected to a torque input disk carrier and friction disks (1 2, 22) rotatably connected to a torque output disk carrier the torque input disk carrier being common to the first and second clutches,
caractérisé en ce qu’il comprend :  characterized in that it comprises:
- un porte-disque assemblé (30, 40) selon l’u ne quelconque des revendications précédentes, constituant l’un ou l’autre des porte-disques de sortie de couple ; - un palier axial (52) disposé axialement entre les porte- disques de sortie de couple du premier et du deuxième embrayage, ledit palier axial (52) étant reçu et centré par la cavité (38, 48) formée dans le porte-disque assemblé (30, 40). an assembled disk carrier (30, 40) according to any one of the preceding claims, constituting one or the other of the torque output carriers; an axial bearing (52) arranged axially between the torque output carriers of the first and second clutches, said axial bearing (52) being received and centered by the cavity (38, 48) formed in the assembled disk carrier (30, 40).
1 2. Procédé pou r fabriquer u n porte-disque assemblé (30, 40) selon l’une quelconque des revendications 1 à 8 , comportant au moins les étapes suivantes : 2. A method of manufacturing an assembled disk carrier (30, 40) according to any one of claims 1 to 8, comprising at least the following steps:
fourni r un moyeu (31 , 41 ) et u n support de disques (33, 43) découpé u niquement par un outillage de presse,  provided r a hub (31, 41) and u n disc support (33, 43) cut u nically by a press tool,
appliquer le support de disques su r le moyeu au niveau d’une zone de recouvrement (37, 47),  applying the disk carrier to the hub at a covering area (37, 47),
puis fixer ensemble le support de disques (33, 43) su r le moyeu (31 , 41 ) par soudu re laser par transparence au niveau de la zone de recouvrement.  and then securing the disk carrier (33, 43) to the hub (31, 41) together by laser welding by transparency at the overlap area.
PCT/EP2019/063258 2018-06-01 2019-05-22 Assembled disc carrier and wet clutch mechanism comprising this assembled disc carrier WO2019228892A1 (en)

Priority Applications (1)

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Applications Claiming Priority (2)

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FR1854793 2018-06-01
FR1854793A FR3081952B1 (en) 2018-06-01 2018-06-01 ASSEMBLED DISC HOLDER AND WET CLUTCH MECHANISM INCLUDING THIS ASSEMBLED DISC HOLDER

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CN112219037B (en) 2022-07-26
CN112219037A (en) 2021-01-12
FR3081952A1 (en) 2019-12-06
FR3081952B1 (en) 2020-06-26

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