• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an assembled disk carrier (10) for a wet double-clutch mechanism (1), in particular a motor vehicle, comprising: a cylindrical hub (7) with a rotation axis O, a balancing cover ( 30) of the first clutch E1 of the wet double clutch mechanism (1) integrally connected in rotation with the hub (7), - an outer disk carrier (14) of the first clutch E1 of the wet double clutch mechanism (1), comprising an axial extension arranged to receive the multi-disk assembly of the first clutch and a first fixing portion extending radially inwardly; - an inner disk carrier (24) of the second clutch of the wet double-clutch mechanism (1), comprising an axial extension arranged to receive the multi-disk assembly of the second clutch and a second fixing portion extending radially outwards, wherein the first and second fixing portions are axially supported on a same bearing face (31) of the balancing cover (30) and welded together to the balancing cover.
    公开号:FR3059742A1
    申请号:FR1661987
    申请日:2016-12-06
    公开日:2018-06-08
    发明作者:Alexandre Guilhem；Nicolas Depoilly；Olivier Doremus；Pascal Dekydtspotter
    申请人:Valeo Embrayages SAS；
    IPC主号:
    专利说明:

    ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY © Publication number: 3,059,742 (to be used only for reproduction orders)
    ©) National registration number: 16 61987
    COURBEVOIE © Int Cl 8 : F16 D 25/10 (2017.01), F 16 D 13/68, 21/06, 25/0638
    A1 PATENT APPLICATION
    Date of filing: 06.12.16. © Applicant (s): VALEO EMBRAYAGES Company by (30) Priority: simplified actions - FR. @ Inventor (s): GUILHEM ALEXANDRE, DEPOILLY NICOLAS, DOREMUS OLIVIER and DEKYDTSPOTTER (43) Date of public availability of the PASCAL. request: 08.06.18 Bulletin 18/23. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO EMBRAYAGES Company by related: simplified actions. ©) Extension request (s): (© Agent (s): VALEO EMBRAYAGES Company by simplified actions.
    ASSEMBLED DISC HOLDER AND WET DOUBLE CLUTCH MECHANISM INCLUDING THIS ASSEMBLED DISK.
    FR 3 059 742 - A1
    The invention relates to an assembled disc carrier (10) for a wet double clutch mechanism (1), in particular for a motor vehicle, comprising:
    - a cylindrical hub (7) with an axis of rotation O,
    a balancing cover (30) of the first clutch E1 of the wet double clutch mechanism (1) linked in rotation with the hub (7),
    - an external disc holder (14) of the first clutch E1 of the wet double clutch mechanism (1), comprising an axial extension arranged to receive the multidisk assembly of the first clutch and a first fixing portion extending radially towards the interior,
    - an internal disc holder (24) of the second clutch of the wet double clutch mechanism (1), comprising an axial extension arranged to receive the multidisk assembly of the second clutch and a second fixing portion extending radially outwards , wherein the first and second fixing portions are in axial support on the same bearing face (31) of the balancing cover (30) and fixed together by welding to the balancing cover.
    a> K Λ » -fi> TA Va 31
    Assembled disc holder and wet double clutch mechanism comprising this assembled disc holder
    The present invention relates to an assembled disc holder and a wet double clutch mechanism comprising this assembled disc holder.
    Such a double 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 goods vehicle, a public transport vehicle, or an agricultural vehicle.
    Patent application EP 2 909 052 B1 discloses a wet double clutch mechanism for a motor vehicle, comprising torque input means intended to be coupled to a crankshaft, a first torque output shaft, a second output shaft torque, 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 torque output shaft . The first and second clutches, respectively of the multi-disc type, are arranged radially one above the other. Each of the multi-plate clutches has flanges linked in rotation to an input disc holder forming the torque input means and friction discs linked in rotation to the output disc holders. The first clutch also includes an axially movable piston which is controlled to move by means of a control chamber with which is associated a balancing chamber delimited at least by a balancing cover,
    The input disc holder comprises in this case a cylindrical hub, the balancing cover, an external disc holder associated with the first clutch, comprising an axial extension arranged to receive the flanges of the first clutch, an internal disc holder associated with the second clutch comprising an axial extension arranged to receive the flanges of the second clutch. These various elements are fixed together by several welding operations, such as: the fixing of the internal peripheries of the external and external disc holder of the internal disc holder at first, the fixing of the internal disc holder on the balancing cover in a second time and the fixing of the balancing cover to the cylindrical hub as a last step. The cost of producing such an input disc holder is therefore high.
    The laser welding process makes it possible to implement the end-to-end assembly of the internal peripheries of the external and external disc holder of the internal disc holder but requires very little play between parts due to the absence of filler material. and the fineness of the laser source beam. Obtaining internal and external disc holders by stamping and cutting with a press does not allow precise parts to be obtained, which makes the implementation of laser welding difficult. The play between parts is too large and is not compatible with the constraints of the laser process. Laser welding can then present unacceptable appearance defects.
    It is sometimes necessary to machine the inner peripheries of the outer disc holder and the outer periphery of the inner disc holder so that the play between parts becomes compatible with the laser welding process again.
    The object of the invention is in particular to provide a simple, effective and economical solution to this problem.
    The object of the present invention is in particular to propose a wet clutch mechanism for a torque transmission system making it possible to solve at least some of the drawbacks of the prior art.
    To this end, the invention provides an assembled disc holder for a wet double clutch mechanism, in particular for a motor vehicle, comprising:
    - a cylindrical hub with axis of rotation O,
    - a lid balancing first clutch of mechanism Doubled wet clutch joined together in rotation with the hub, - a disc holder outside first clutch of
    wet double clutch mechanism, comprising an axial extension arranged to receive the multidisk assembly of the first clutch and a first fixing portion extending radially inwards,
    - an internal disc holder of the second clutch of the wet double clutch mechanism, comprising an axial extension arranged to receive the multidisk assembly of the second clutch and a second fixing portion extending radially outwards, in which the first and second fixing portions are axially supported on the same bearing face of the balancing cover and fixed together by welding to the balancing cover.
    This input disc holder, according to the invention, has the advantage, thanks to the positioning of the first and second fixing portions on the same bearing face of the balancing cover, to simplify assembly. In this way, it is possible to secure these three elements in a single welding operation, so as to significantly reduce the manufacturing costs of such an assembled disc holder.
    Advantageously, the interior and exterior disk holders are supported on the same geometric reference formed by the bearing face of the balancing cover. This entry disc holder, according to the invention, has the advantage of reducing the geometric defects of the welded assembly.
    More specifically, the first fixing portion located on the inner periphery of the outer disc holder and the second fixing portion located on the outer periphery of the inner disc holder are located close to each other and fixed together by welding on a common bearing face of the balancing cover.
    By internal periphery is meant a part of the part located near the axis of rotation of the clutch device.
    By external periphery is meant another place in the room located away from this same axis.
    The invention may have one or other of the characteristics described below, combined together or taken independently of one another.
    - the bearing face of the balancing cover is flat and at least partially covers the first and second fixing portions.
    Covering the first and second fixing portions with a flat support face has the advantage of reducing the geometric defects of the welded assembly.
    - the outer disc holder, the inner disc holder and the balancing cover are fixed together by laser welding by transparency.
    - The outer disc holder, the inner disc holder and the balancing cover are welded together by a laser weld bead by transparency.
    - The outer disc holder and the inner disc holder are separate parts.
    - The laser weld bead by transparency is arranged on the overlap area of the first and second fixing portions.
    - During the welding operation, the balancing cover is interposed axially between the beam of the laser source and the first and second fixing portions.
    The overlap of the first and second fixing portions by the bearing face of the balancing cover has the advantage of creating a cavity between the three elements to be welded which is not in contact with the beam of the laser source during assembly. As the beam from the laser source is not in contact with the air flow included in the cavity, the temperature increases at the level of the overlap zone, thus facilitating the welding operation. The clearance between the inner peripheries of the outer disc holder and the outer edge of the inner disc holder can be greater, allowing the use of stamped and press cut parts at the same time.
    - The laser weld bead by transparency is continuous or discontinuous.
    - The balancing cover has in section, in a plane passing through the axis of rotation, the shape of a 90 ° elbow defined by the support face and an axial extension part.
    - The inner disc holder is inserted into the balancing cover, the axial extension of the inner disc holder coming to bear on the axial extension part of the balancing cover.
    - The external disc holder may include reaction means intended to come to bear on the multidisk assembly of the second clutch, said reaction means being located radially outside the laser weld bead by transparency.
    - In one embodiment of the invention, the first and second fixing portions can be of annular shape.
    - The first and second fixing portions can form an annular cavity at least partially covered by the bearing face of the balancing cover.
    - The transparent weld bead can extend angularly at an angle between 240 ° and 360 °.
    The annular shape of the cavity has the advantage of simplifying the shape of the laser weld bead by transparency.
    According to this embodiment of the invention, the laser weld bead by transparency is produced simply, without any additional manufacturing cost.
    - In another embodiment of the invention, the first and / or second fixing portions can be formed respectively by segments of material distributed angularly around the axis of rotation O.
    - Preferably, the material segments of the first fixing portion and the material segments of the second fixing portion placed angularly opposite can form cavities covered by the bearing face of the balancing cover.
    - Alternatively, the material segments of the first fixing portion and the second fixing portion of the annular inner disc holder can form cavities covered by the bearing face of the balancing cover.
    - As a variant, the material segments of the second fixing portion and the first fixing portion of the annular outer disc holder can form cavities covered by the bearing face of the balancing cover.
    - The laser weld seam by discontinuous transparency can be formed by a series of separate seams angularly distributed around the axis of rotation O.
    According to this other embodiment of the invention, the laser weld bead by transparency can be produced discontinuously in order to create clearances of material or openings in the assembled disc holder.
    According to one of its aspects, the invention also relates to a wet double clutch mechanism for a torque transmission system comprising a first clutch and a second clutch, respectively of the multi-disc type, controlled to selectively couple a shaft leading to a first shaft. driven and to a second driven shaft, the first and second clutches being arranged radially one above the other, comprising an assembled disc holder incorporating all or part of the characteristics mentioned above.
    Another subject of the invention, according to another of its aspects, is a wet double clutch mechanism for a torque transmission system, in particular for a motor vehicle, comprising around at least one axis O:
    - an assembled disc holder arranged to be linked in rotation to a driving shaft,
    - A first clutch and a second clutch respectively of the multi-disc type, controlled to selectively couple said shaft leading to a first driven shaft and to a second driven shaft, and arranged radially one above the other;
    - each of the multi-plate clutches having flanges linked in rotation to the input disc holder and friction discs linked in rotation to an output disc holder,
    - said first clutch comprising an axially movable piston which is controlled to move by means of a control chamber with which is associated a balancing chamber delimited at least by a balancing cover, said assembled disc holder comprising:
    • an external disc holder associated with the first clutch, comprising an axial extension arranged to receive the flanges of the first clutch and a first fixing portion extending radially inwards, • an internal disc holder associated with the second clutch comprising a axial extension arranged to receive the flanges of the second clutch and a second fixing portion extending radially outwards, the first and second fixing portions being in axial support on the same face of the balancing cover and fixed together by welding to the balancing cover.
    All or part of the features mentioned above also applies to this other aspect of the invention.
    The subject of the invention is also a process for manufacturing an assembled disc holder incorporating all or part of the characteristics mentioned above, comprising at least the following steps:
    axially support the first and second fixing portions on the bearing face of the balancing cover, fix together the outer disc holder, the inner disc holder and the balancing cover by laser welding by transparency.
    Advantageously, the beam of the laser source is applied in a direction substantially parallel to the axis of rotation O on a face of the balancing cover opposite the bearing face.
    According to this process, the beam of the laser source is not in contact with the air flow included in the cavity formed by the three elements to be assembled. The beam of the laser source is then constantly in contact with the material of the balancing cover, which has the effect of increasing the temperature at the level of the overlap zone, thus facilitating the welding operation.
    The invention will be better understood on reading the description which follows, given solely by way of example and made with reference to the appended drawings in which:
    Figure 1 is an axial sectional view of a wet double clutch mechanism comprising a disc holder assembled according to a first embodiment of the invention;
    Figure 2 is an axial sectional view of the disc holder assembled according to the first embodiment of the invention of Figure 1;
    Figure 3 is a partial view of the disc holder assembled before the welding operation according to the first embodiment of the invention of Figure 1;
    Figure 4 is a front view of the assembled disc holder showing in the different dials, different welding configurations of the first and second fixing portions.
    In the following description and claims, the terms "front" or "rear" depending on the direction relative to an axial orientation determined by the main axis O will be used without limitation and in order to facilitate understanding thereof. of rotation of the transmission of the motor vehicle and the terms "interior / internal" or "exterior / external" with respect to the axis O and in a radial orientation, orthogonal to said axial orientation.
    There is shown in Figures 1 to 3 a first embodiment of an assembled disc holder 10 for wet double clutch mechanism 1. The wet double clutch mechanism 1 has a main axis O of rotation.
    The wet double clutch mechanism 1 for the torque transmission system comprises around the axis O at least one input element 2 which is linked in rotation to a driving shaft (not shown). The input element 2 is located at the rear of the wet double clutch mechanism 1.
    ίο
    In the first embodiment, the input element 2 having an overall "L" shape, comprises a radial orientation part formed by an entry web 3 and an axial orientation part formed by a hub 4. The inlet web 3 and the inlet hub 4 are integral, preferably fixed together by welding.
    The hub 4 is arranged radially inside with respect to the entry web 3.
    The input hub 4 is for example linked in rotation via the grooves 5 to the output of a damping device or damper 6 (such as a double damping flywheel, etc.) whose input is linked , in particular by means of an engine flywheel, to the drive shaft formed by a crankshaft which rotates an engine fitted to the motor vehicle.
    The entry web 3 has, at its external radial end of axial orientation, teeth 9 which extend radially outwards and which are supported on the assembled disc holder 10.
    The wet double clutch mechanism 1 is controlled to selectively couple said shaft leading to a first driven shaft A1 and to a second driven shaft A2.
    Preferably, the first driven shaft A1 and the second driven shaft A2 are coaxial. The first driven shaft A1 is driven in rotation when said first clutch E1 is closed and the second driven shaft A1 is driven in rotation when said second clutch E2 is closed, said first and second driven shafts A1, A2 being respectively connected to a gearbox gears fitted to the motor vehicle.
    In the wet double clutch mechanism 1, the first clutch E1 is used, for example, both for starting and engaging odd gears and the second clutch E2 then takes care of even and reverse gear, alternatively the gears supported by said first clutch E1 and second clutch E2 are reversed.
    The wet double clutch mechanism 1 comprises a first clutch E1 and a second clutch E2, which are respectively of the multi-disc type.
    The multi-disc assembly of the first clutch E1 comprises flanges 11 linked in rotation to the assembled disc holder 10 and friction discs 12 linked in rotation to an output disc holder 13. The friction discs 12 are, axially interposed between two successive flanges 11.
    The output disc holder 13 of the first clutch E1 is linked in rotation by engagement with the friction discs 12 and by a splined connection with said first driven shaft A1.
    The outlet disc holder 13 generally has an “L” shape, the inner radial end of which is secured to a grooved outlet hub.
    The multi-disc assembly of the second clutch E2 includes flanges 21 linked in rotation to the assembled disc holder 10 and friction discs 22 linked in rotation to an output disc holder 23.
    The output disc holder 23 of the second clutch E2 is linked in rotation by meshing with the friction discs 22 and by a splined connection with said second driven shaft A2.
    The outlet disc holder 23 generally has an "L" shape, the inner radial end of which is secured to a grooved outlet hub.
    The assembled disc holder 10 further comprises a cylindrical hub 7 with an axis of rotation O, an outer disc holder 14 of the first clutch E1 and an inner disc holder 24 of the second clutch E2.
    The outer 14 and inner 24 disc holders are fixedly connected to the cylindrical hub 7 by means of a balancing cover 30 of the first clutch E1 of the wet double clutch mechanism 1.
    In the embodiment of Figures 1 to 2, the balancing cover 30 is a separate part from the cylindrical hub 7. The cylindrical hub 7 is welded to the balancing cover 30.
    The cylindrical hub 7 is common to the first and to the second clutch E1 and E2.
    In an embodiment not shown, the cylindrical hub can be fixed to the balancing cover by means of rivets.
    In an embodiment not shown, the balancing cover can be formed directly in the cylindrical hub.
    As illustrated in FIG. 2, the balancing cover 30 has a general shape of revolution around the axis O. The balancing cover 30 notably comprises an axial extension part 33 from which extends radially towards outside a radial extension wall 37.
    This radial extension wall 37 is in contact with the outer 14 and inner 24 disc holders.
    The balancing cover 30 also includes a central opening 39 to allow it to be mounted around the cylindrical hub 7 (not shown in FIG. 2). The central opening 39 is formed on an inner radial end.
    The outer disc holder 14 of the first clutch E1 has an axial extension 15 arranged to receive the multidisk assembly of the first clutch E1 and a first fixing portion 16 extending radially inwards.
    The inner disc holder 24 of the second clutch E2 has an axial extension 25 arranged to receive the multi-disc assembly of the second clutch E2 and a second fixing portion 26 extending radially outwards.
    The first and second fixing portions 16, 26 are of annular shape.
    The first and second fixing portions 16, 26 are axially supported on the same bearing face 31 of the balancing cover 30 and fixed together by welding to the balancing cover 30. The bearing face 31 is formed on the radial extension wall 37. The bearing face 31 of the balancing cover 30 is planar and covers the first and second fixing portions 16, 26.
    The balancing cover 30 has in section, in a plane passing through the axis of rotation, the shape of a 90 ° elbow defined by the bearing face 31 and the axial extension part 33. The interior disc carrier 24 is inserted into the balancing cover, the axial extension 25 of the inner disc holder 24 coming to bear on the axial extension part 33 of the balancing cover.
    The outer disc holder 14, the inner disc holder 24 and the balancing cover 30 are fixed together by transparency laser welding and in particular welded together by a transparency laser welding bead 72.
    The weld bead 72 is formed by applying a beam 70 from the laser source directly to the balancing cover. The first and second fixing portions are separated from the beam of the laser source by the radial extension wall 37 of the balancing cover 30.
    The laser weld bead 72 is disposed on the overlap area of the first and second attachment portions 16, 26. The overlap of the first and second attachment portions by the bearing face of the balancing cover forms a cavity 74 between the three elements to be welded which is not in contact with the beam of the laser source during assembly. The dimension of the cavity 74 visible in FIG. 3 is in particular a function of the clearance between the first and second fixing portions 16, 26. During the welding operation, the temperature measured in the cavity 74 is high and favors assembly. the inner peripheries of the outer disc holder and the outer edge of the inner disc holder.
    In the embodiment of the assembled disc holder 10 illustrated in FIG. 2 and in the upper left dial of FIG. 4, the laser weld bead 72 is continuous and extends angularly over 360 °. The external disc holder 14 finally comprises reaction means 28 intended to come to bear on the multidisk assembly of the second clutch E2, said reaction means 28 are located radially outside the laser weld bead by transparency. The reaction means 28 come to bear on a flange 21 at the end of the multidisk assembly.
    Alternatively, the transparency weld bead 72 may be discontinuous and extend angularly at an angle between 240 ° and 359 °.
    As illustrated in FIG. 1, the first clutch E1 is arranged radially above the second clutch E2.
    Preferably, the first clutch E1 and the second clutch E2 are in the open state, also called "normally open", and are selectively actuated in operation by a control device (not shown) to pass from the open state to the 'closed state.
    The wet double clutch mechanism 1 is hydraulically controlled by means of a pressurized fluid, generally oil.
    To selectively control the change of state of the first clutch E1 and of the second clutch E2 of the double clutch mechanism 10, the control device manages the supply of pressurized oil to the mechanism 1. The control device is connected to the cylindrical hub 7 which comprises oil supply channels 71a, 71b and 71c, for example three in number as shown in FIG. 1.
    The oil supply channels 71a, 71b and 71c consist of substantially radial holes directed towards the control chambers and the balancing chambers of the first and second clutches E1, E2.
    The channels 71a, 71c located axially at the front and rear end of the cylindrical hub 7 are associated respectively with the control chamber of the first clutch E1 and the control chamber of the second clutch E2. The channel 71b located axially between the channels 71a, 71c is respectively associated with the balancing chamber of the first clutch E1 and the balancing chamber of the second clutch E2.
    The first clutch E1 of the multidisc type has a piston 40 which is axially movable, here from front to rear, between a disengaged position and a engaged position which correspond respectively to the open and closed states of the first clutch E1.
    Advantageously, the piston 40 includes, at its external radial end, supports 41 which extend axially towards the rear. The supports 41 come to bear on the end flange 12 of the multi-disc assembly of the first clutch E1. In the example shown in Figure 1, the supports 41 are discontinuous.
    The chamber 32 for controlling the piston 40 of the first clutch E1 is associated with a balancing chamber 34 delimited by a part of the cylindrical hub 7 and a part of the balancing cover 30.
    The piston 40 of the first clutch E1 extends radially and is disposed axially between the control chamber 32, located axially at the front, and the balancing chamber 34, located axially at the rear. The piston 40 is concentric with the assembled disc holder 10.
    As shown in FIG. 1, the piston 30 is controlled to move by means of a control chamber 32 delimited axially by a front face of an internal radial part of the piston 40 and by a rear radial face of a piece of closure 45.
    The balancing chamber 34 is supplied with oil through the bore 71b that the cylindrical hub 7 includes.
    The piston 40 is controlled to tighten axially, in the engaged position, said multidisk assembly of the first clutch E1 against reaction means 8 formed directly in the web 3 of entry.
    The first clutch E1 comprises elastic return means for automatically returning the piston 40 to the disengaged position, corresponding to an open state of the clutch. In this position, the piston 40 axially releases the multidisk assembly which then no longer transmits torque in the direction of the first driven A1 shaft.
    As illustrated in FIG. 1, the elastic return means of the piston 40 are formed by a plurality of helical springs interposed axially between a front wall of the cylindrical hub 7 and said piston 40.
    The second clutch E2 of the wet double clutch mechanism 1 is similar in design to that of the first clutch E1, the second clutch E2 being of the multi-disc type.
    Advantageously, reference will be made, if necessary, to the description of the second clutch E2 in the detailed description of the first clutch E1 given previously.
    The second clutch E2 comprises a piston 50 which is axially movable, here from the rear to the front, between a disengaged position and a engaged position corresponding respectively to the open and closed states of the second clutch E2.
    The piston 40 of the first clutch E1 and the piston 50 of the second clutch E2 of said wet double clutch mechanism 1 move axially in the opposite direction to pass for example from the disengaged position to the engaged position.
    Advantageously, the piston 50 comprises, at its external radial end supports 51 which extend axially forwards. The supports 51 come to bear on the end plate 21 of the multidisk assembly of the second clutch E2. In the example shown in Figure 1, the supports 51 form a continuous ring.
    As shown in FIG. 1, the piston 50 is controlled to move by means of a control chamber 36 delimited axially by a rear face of an internal radial part of the piston 50 and by a front radial face of a piece of closing 55.
    The control chamber 36 is supplied with oil through the bore 71c which passes radially through the cylindrical hub 7.
    The chamber 36 for controlling the piston 50 of the first clutch E2 is associated with a balancing chamber 38 delimited at least by a balancing cover 35.
    The piston 50 of the second clutch E2 extends radially and is disposed axially between the control chamber 36, located axially at the rear, and the balancing chamber 38, located axially at the front. The piston 50 is concentric with the assembled disc holder 10.
    In this embodiment illustrated in FIG. 1, the balancing cover 35 has a general shape of revolution around the axis O. The balancing cover 35 in particular comprises an external cylindrical wall 35a inscribed inside the 'axial extension 25 of the inner disc holder 24 of the second clutch E2. The balancing cover 35 also includes a central opening to allow it to be mounted around the cylindrical hub 7.
    The balancing chamber 38 is supplied with oil by means of the bore 71b that the cylindrical hub 7 includes.
    The piston 50 is controlled to axially tighten, in the engaged position, said multidisk assembly of the second clutch E2 against reaction means 28. The reaction means 28 are formed directly on the internal periphery of the external disc holder 14 of the first clutch E1 .
    The balancing cover 35 has stamped shapes distributed angularly around the axis O, forming an oil passage between the balancing chamber 38 and the interior of the second clutch E2 and allows the oil circulation necessary to pressure balancing between the control chamber 36 and the balancing chamber 38.
    We will now describe the manufacture of the assembled disc holder 10 according to the first embodiment of the invention as illustrated in FIGS. 1,2, 3 and in the upper left dial of FIG. 4. The manufacture comprises, between other, the following steps:
    According to a first step (shown in FIG. 3), the first and second fixing portions 16, 26 are placed axially on the bearing face 31 of the balancing cover 30,
    In a second step (shown in Figure 2), the outer disc holder 14, the inner disc holder 24 and the balancing cover 30 are fixed together by laser welding by transparency. The beam 70 of the laser source is applied in a direction substantially parallel to the axis of rotation O on a face of the balancing cover 30 opposite to the bearing face 31. The beam 70 of the laser source is in direct contact with the material of the balancing cover 30 causing an increase in temperature at the level of the overlap zone and thus facilitating the welding operation between the 3 elements.
    In this manufacturing process, the weld bead 72 can be continuous or discontinuous.
    Other welding configurations of the first and second fixing portions are visible in the different dials of FIG. 4.
    The upper right dial of Figure 4 shows another configuration of the welding of the first and second fixing portions. In this exemplary embodiment, the first and second fixing portions are formed respectively by material segments 16a, 26a distributed angularly around the axis of rotation O. The material segments 16a of the first fixing portion and the segments material 26a of the second fixing portion are placed angularly opposite one another and form cavities 74 covered by the bearing face 31 of the balancing cover 30.
    In this example, the laser weld bead 72 is discontinuous and formed by a series of separate beads distributed angularly around the axis of rotation O. Each weld bead extends angularly at an angle of 15 °. The assembled disc holder 10 has openings 73 arranged angularly between each weld bead 72.
    The lower right dial of Figure 4 shows another configuration of the welding of the first and second fixing portions. In this other exemplary embodiment, the first fixing portion is formed by segments of material 16a distributed angularly around the axis of rotation O and the second fixing portion 26 is of annular shape. The material segments 16a of the first fixing portion and the second fixing portion 26 of the annular inner disc holder form cavities 74 covered by the bearing face 31 of the balancing cover 30.
    In this other exemplary embodiment, the laser weld bead 72 is discontinuous and formed by a series of separate cords distributed angularly around the axis of rotation O. The assembled disc holder 10 has openings 73 arranged angularly between each bead of solder 72.
    The lower left dial of FIG. 4 shows another configuration of the welding of the first and second fixing portions. In this other embodiment, the first fixing portion 16 is of annular shape and the second fixing portion is formed by segments of material 26a distributed angularly around the axis of rotation O.
    The material segments 26a of the second fixing portion and the first fixing portion 16 of the annular outer disc holder form cavities 74 covered by the bearing face 31 of the balancing cover 30.
    In this other exemplary embodiment, the laser weld bead 72 is discontinuous and formed by a series of separate cords distributed angularly around the axis of rotation O. The assembled disc holder 10 has openings 73 arranged angularly between each bead of solder 72.
    The invention is not limited to the exemplary embodiments which have just been described.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. An assembled disc holder (10) for a wet double clutch mechanism, in particular for a motor vehicle, comprising:
    - a cylindrical hub (7) with an axis of rotation O,
    - a balancing cover (30) of the first clutch of the wet double clutch mechanism linked in rotation with the hub (7),
    - an external disc holder (14) of the first clutch of the wet double clutch mechanism, comprising an axial extension (15) arranged to receive the multidisk assembly of the first clutch and a first fixing portion (16, 16a) extending radially inward,
    - an inner disc holder (24) of the second clutch of the wet double clutch mechanism, comprising an axial extension (25) arranged to receive the multidisk assembly of the second clutch and a second fixing portion (26, 26a) extending radially outwards, characterized in that the first and second fixing portions (16, 16a, 26, 26a) are in axial support on the same bearing face (31) of the balancing cover (30) and fixed together by welding to the balancing cover.
    [2" id="c-fr-0002]
    2. assembled disc holder (10) according to claim 1, characterized in that the outer disc holder (14), the inner disc holder (24) and the balancing cover (30) are fixed together by laser welding. by transparency.
    [3" id="c-fr-0003]
    3. assembled disc holder (10) according to claim 1 or 2, characterized in that the bearing face (31) of the balancing cover is planar and at least partially covers the first and second fixing portions.
    [4" id="c-fr-0004]
    4. Assembled disc holder (10) according to claim 3, characterized in that the laser weld bead by transparency (72) is disposed on the overlap area of the first and second fixing portions.
    [5" id="c-fr-0005]
    5. An assembled disc holder (10) according to any one of the preceding claims, characterized in that the first and second fixing portions (16, 26) are of annular shape.
    [6" id="c-fr-0006]
    6. assembled disc holder (10) according to the preceding claim, characterized in that the first and second fixing portions (16, 26) form an annular cavity (74) covered at least partially by the bearing face (31) of the balancing cover (30).
    [7" id="c-fr-0007]
    7. assembled disc holder (10) according to any one of claims 1 to 4, characterized in that the first and / or second fixing portions (16a, 26a) are respectively formed by segments of material distributed angularly around the axis of rotation O.
    [8" id="c-fr-0008]
    8. An assembled disc holder (10) according to any one of claims 2 to 7, characterized in that the laser weld bead by transparency (72) is continuous or discontinuous.
    [9" id="c-fr-0009]
    9. An assembled disc holder (10) according to the preceding claim, characterized in that the discontinuous transparency laser weld bead (72) is formed by a series of separate beads distributed angularly around the axis of rotation O.
    [10" id="c-fr-0010]
    10. An assembled disc holder (10) according to any one of the preceding claims, characterized in that the balancing cover (30) has in section, in a plane passing through the axis of rotation, the shape of a 90 ° elbow defined by the bearing face (31) and an axial extension part.
    [11" id="c-fr-0011]
    11. assembled disc holder (10) according to the preceding claim, characterized in that the inner disc holder (24) is inserted in the balancing cover (30), the axial extension (25) of the inner disc holder coming to bear on the axial extension part (33) of the balancing cover (30).
    [12" id="c-fr-0012]
    12. assembled disc holder (10) according to any one of claims 2 to 11, characterized in that the external disc holder (14) comprises reaction means (28) intended to come to bear on the multidisc assembly of the second clutch, said reaction means (28) being located radially outside the laser weld bead by transparency (72).
    [13" id="c-fr-0013]
    13. Double wet clutch mechanism for a torque transmission system comprising a first clutch E1 and a second clutch E2 respectively of the multi-disc type, controlled to selectively couple a drive shaft to a first driven shaft and to a second driven shaft, the first and second clutches E1, E2 being arranged radially one above the other, characterized in that it comprises an assembled disc holder (10) according to any one of the preceding claims.
    [14" id="c-fr-0014]
    14. Method for manufacturing an assembled disc holder (10) according to any one of claims 1 to 12 comprising at least the following steps:
    axially support the first and second fixing portions (16, 16a, 26, 26a) on the bearing face (31) of the balancing cover (30), fix the outer disc holder (14) together, the inner disc holder (24) and the balancing cover (30) by laser welding by transparency.
    [15" id="c-fr-0015]
    15. Method for manufacturing an assembled disc holder according to the preceding claim, characterized in that the beam (70) of the laser source is applied in a direction substantially parallel to the axis of rotation O on one face of the balancing cover ( 30) opposite the bearing face (31).
    1/3
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    2/3
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    同族专利:
    公开号 | 公开日
    WO2018104396A2|2018-06-14|
    DE112017006154T5|2019-08-29|
    WO2018104396A3|2018-08-02|
    FR3059742B1|2019-05-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102008060580A1|2008-06-03|2009-12-10|Borgwarner Inc., Auburn Hills|Multiple coupling device with two pressure compensation chambers|
    WO2011023407A1|2009-08-28|2011-03-03|Getrag Ford Transmissions Gmbh|Dual clutch assembly for a transmission having two input shafts|
    EP2685122A2|2012-07-12|2014-01-15|GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG|Bearing assembly for disc carrier and clutch assembly for a motor vehicle powertrain|FR3080159A1|2018-04-17|2019-10-18|Valeo Embrayages|ASSEMBLED DISC RACK AND DUAL WET CLUTCH MECHANISM INCLUDING THE ASSEMBLED DISK HOLDER|
    WO2020048648A1|2018-09-06|2020-03-12|Valeo Embrayages|Dual clutch mechanism|DE102012021074B4|2012-10-19|2016-05-04|Getrag Getriebe- Und Zahnradfabrik Hermann Hagenmeyer Gmbh & Cie Kg|Method for operating a hybrid drive train|WO2020234081A1|2019-05-17|2020-11-26|Transmisiones Y Equipos Mecanicos, S.A. De Cv|Power flow in a double concentric clutch|
    WO2020234082A1|2019-05-17|2020-11-26|Transmisiones Y Equipos Mecanicos, S.A. De Cv|Double clutch unit in a transmission|
    FR3101927B1|2019-10-09|2021-10-08|Valeo Embrayages|"Common elastic return device for wet double clutch and wet double clutch of compact type comprising such an elastic return device"|
    FR3101926B1|2019-10-09|2021-11-26|Valeo Embrayages|"COMPACT WET DOUBLE CLUTCH MECHANISM"|
    法律状态:
    2018-01-02| PLFP| Fee payment|Year of fee payment: 2 |
    2018-06-08| PLSC| Publication of the preliminary search report|Effective date: 20180608 |
    2019-12-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-12-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-12-31| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1661987A|FR3059742B1|2016-12-06|2016-12-06|ASSEMBLED DISC RACK AND DUAL WHEEL CLUTCH MECHANISM COMPRISING THE ASSEMBLED DISK RACK|
    FR1661987|2016-12-06|FR1661987A| FR3059742B1|2016-12-06|2016-12-06|ASSEMBLED DISC RACK AND DUAL WHEEL CLUTCH MECHANISM COMPRISING THE ASSEMBLED DISK RACK|
    DE112017006154.7T| DE112017006154T5|2016-12-06|2017-12-06|Assembled disc carrier and wet dual clutch mechanism comprising this assembled disc carrier|
    PCT/EP2017/081716| WO2018104396A2|2016-12-06|2017-12-06|Assembled disc holder and dual wet clutch mechanism comprising said assembled disc holder|
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