FR2749627A1 - CLUTCH MODULE HAVING A TARGET ASSOCIATED WITH A ROTATION SENSOR COMING FROM MATERIAL WITH THE CLUTCH COVER - Google Patents

Abstract

The invention provides a clutch module (10) for a motor vehicle, in which the cover (12) comprises, at its external periphery, an annular skirt (60) of axial orientation from which a series of fixing lugs ( 66) which extend axially and each of which axially crosses a corresponding passage (68) of axial orientation formed at the periphery of the flange (22), to open axially beyond the radial face (72) of the reaction plate ( 20) or of the flange (22) opposite its radial friction face (32), the free end section (90) of at least certain fixing lugs (66) being retained axially with respect to the reaction plate (20 ) or on the flange (22), characterized in that the cover comprises at least one target (110), for a scrolling sensor in rotation of the cover, which is made integrally with said annular skirt (60).

Description

The present invention relates to a clutch module

  especially for a motor vehicle.

  The invention relates more particularly to a clutch module, in particular for a motor vehicle, of the type comprising a set of adjacent parts of generally annular and coaxial shape among which are successively axially arranged a cover, a diaphragm bearing on the cover, a plate pressure offering support to the diaphragm and linked in rotation to the cover by coupling means allowing axial movement of the pressure plate relative to the cover, a friction disc suitable for being connected to a driven shaft, and a reaction plate fixed to the cover by fixing means arranged at the external periphery of the module, of the type in which the reaction plate is suitable for being mounted on a support flange integral in rotation with a driving shaft, by means of a series of 'fasteners, and of the type in which the cover comprises, at its outer periphery, an annular skirt of axial orientation of which so nt from a series of fixing lugs which extend axially and each of which axially crosses a corresponding passage of axial orientation formed at the external periphery of the reaction plate or of the flange, to open axially beyond the radial face of the plate of reaction or of the flange opposite to its radial friction face, the free end section of at least some fixing lugs being retained axially with respect to the plate of

reaction or flaccid.

  An example of such a type of clutch module is described and represented in French patent application No. 95.12523 in

Name of requester.

  Thanks to such a design, the reaction plate is simplified since, compared in particular to the solutions described in document FR-A-2,546,594, it has no fixing lugs, the coupling means acting directly between the cover and the

pressure plate.

  This therefore makes it possible, for a given radial size, to increase the size of the friction linings of the friction disc and / or of the damper that said disc usually comprises in its central part. In addition, a positive rotation lock is obtained for the cover relative to the reaction plate.

  attached to its support flange.

  In general, the fixing means have a reduced radial size. They are offset axially with respect to the friction disc which can thus come as close as possible to the periphery

  outer cover with fixing lugs.

  It is possible to adjust the load exerted by the diaphragm and / or its inclination or position by making the tabs penetrate

  more or less axially fixed in their associated passage.

  This results in easy telescopic mounting

of the cover.

  In addition, the cover has a simple shape since it does not have a radial fixing rim as in FIG. 2 of the

document FR-A-2.546.594.

  The fixing lugs are produced integrally by cutting and folding from an annular cylindrical skirt of axial orientation which has the cover at its outer periphery, this skirt thus having a shape of a circumferential comb, the lugs

  constituting the free ends of the cylindrical annular skirt.

  Thanks to the passages and the legs, the cover can be indexed. For the formation of a polarizer, for example at least one tab and an associated axial passage can be of different size. As a variant, this tab and this passage are not distributed

regularly.

  It is also known, for example from the document US-A-

  4,493,409, to equip the cover with at least one target for a scrolling sensor in rotation of the cover, which produces signals which are notably transmitted to a computer for controlling the ignition of the combustion engine associated with a transmission of motor vehicle comprising the clutch module. According to document US-A-4, 493.409, it is known to produce the target in the form of an extension of the cover, made integrally with the latter, and which extends radially outwards to

  from an outer peripheral edge of the cover.

  According to a variant described in this same document, the target can be constituted by a hole or recess formed in a part

cover device.

  The object of the present invention is to propose a new design of a clutch module of the type described and represented in French patent application No. 95.12523 which is equipped, in a simple and economical manner, with at least one target for a sliding scroll sensor of the clutch module cover. For this purpose, the invention proposes a clutch module of the type mentioned above, characterized in that the cover comprises at least one target, for a sensor for scrolling in rotation of the cover, which is made integrally with said

cylindrical annular skirt.

  Thanks to this design according to the invention, the target is advantageously produced, for example by cutting and folding, at the same time as the fixing tabs of the cover which are themselves derived from the annular skirt of axial orientation of the

lid.

  Thanks to the invention, the target or targets produced integrally with the annular skirt of axial orientation have a particularly reduced radial size and require no

  special means for fixing them to the cover.

  The available space is best occupied without having to machine the external periphery of the reaction plate to obtain good measurement accuracy using the aforementioned sensor. The plateau of

  reaction and the sensor are therefore simple and economical.

  According to other characteristics of the invention: - the target is constituted by at least one tongue of axial orientation arranged radially outwards relative to the annular skirt; - The fixing lugs and the tongue extend axially from an axial end edge of the annular skirt; - There is an axial clearance between the free end of the tongue and the portion facing the external periphery of the radial friction face of the reaction plate or the flange; - As a variant, the free end of the tongue bears against the starter ring to position the cover; - The annular skirt of the cover comprises a series of tongues distributed angularly among which at least one of the tongues, called the main tongue, constitutes said target; - The main tab has a width, measured in the tangential direction, which is different from the width of the other tabs; - Said other tabs are distributed angularly in a regular manner while being offset radially outward relative to the annular skirt of the cover; - the free end of the fixing lugs is welded to the reaction plate or the flange; - the free end of the fixing lugs is folded radially; - Each passage is an axial notch formed in the outer peripheral surface of the reaction plate or the flange and which is open radially outwards; - The reaction plate or the flange carries at its outer periphery a starter ring, and each passage is arranged radially inwards relative to the starter ring; the starter ring is mounted on a surface machined in the external peripheral surface of the reaction plate or of the flange, the radial depth of which is less than that of the axial notch; The free end of the fixing lugs is welded to the starter ring; - the free end of the fixing lugs is folded radially outwards opposite a portion facing the

starter ring gear.

  To obtain a target with a large number of secondary tabs, according to one characteristic, the fixing tabs are divided to form secondary tabs alternating circumferentially with the fixing tabs and belonging to the

target.

  Other characteristics and advantages of the invention

  will appear on reading the following detailed description for the

  understanding of which reference will be made to the appended drawings in which: - Figure 1 is an axial section view of a clutch module produced in accordance with the teachings of the present invention; and - Figure 2 is an exploded perspective view which illustrates

  the cover and the reaction plate support flange.

  FIG. 1 shows a clutch module for

motor vehicle.

  The module 10 comprises in a unitary manner a set of adjacent parts of generally annular shape and coaxial along the axis X-X of the clutch module. Among these annular parts, there are successively axially a cover 12, a diaphragm 14, a pressure plate 16, a friction disc 18 and a plate

20.

  The reaction plate 20 is intended to be locked in rotation on the crankshaft 25 of an internal combustion engine of a motor vehicle by being fixed to the latter by means of a support flange 22 in the form of an annular disc, the the central part 24 is

  fixed to the crankshaft 25 by screws 26.

  The reaction plate 20 is an annular cast iron part delimited axially by a first radial face 28 of generally transverse orientation against which an annular ring 30 of the support flange 22, here metallic, bears, and by an opposite radial face 32 which is a machined face constituting one

  friction faces for the friction disc 18.

  The friction disc 18, according to a known embodiment, here consists essentially of a support ring of generally annular shape 34 which is fixed to each of its

  opposite sides a continuous annular friction lining.

  A first lining 36 is provided to cooperate with the radial friction face 32 of the reaction plate 20, while the opposite friction lining 38 is provided to cooperate with a radial friction face 40 which constitutes one of the two transverse faces delimiting the reaction plate 16 which is a generally annular piece of cast iron delimited axially, opposite the friction face 40, by a face 42 of generally transverse orientation. According to a known design, the disc 34 for supporting the friction linings 36 and 38 is designed to be connected via a central hub 35 internally splined to a driven shaft 37, such as for example the input shaft of the gearbox fitted to the motor vehicle, rigidly or with the interposition of a torsional damper 44 with circumferential action springs of known design and which will not be described here

more in detail.

  The transverse face 42 of the pressure plate 16 comprises a series of bosses 46 angularly distributed in a regular manner each of which extends axially projecting in the direction of the bottom of the cover 12 of hollow form to constitute supports for the external peripheral zone 48 of the elastic annular washer 50 constituting the external peripheral part of the diaphragm 14. The pressure plate 16 therefore provides support, here divided into bosses 46, to the diaphragm 14. In a variant not shown, the support is continuous. Indeed, according to a known design, the diaphragm 14 has an outer peripheral annular part 50, in the form of a Belleville washer, which is interposed elastically between the bosses 46 of the pressure plate 16 and an annular support rib 52 which extends in relief towards the inside of the cover 12 and on which the internal peripheral zone 54 of the Belleville washer rests, the latter being extended radially inwards by a central part fragmented into radial fingers 55 by

  slots separating the fingers two by two 55.

  The Belleville washer 14 has the function of axially urging the pressure plate in the direction corresponding to the axial tightening of the friction disc 18 between the friction faces 32 and

40.

  The radial fingers 55 of the diaphragm 14 and the torsion damper 44 have in axial coincidence screwing passages

screws 26 for at least one tool.

  The cover 12, here metallic of hollow form, consists essentially of an annular veil 56 of generally transverse orientation forming the bottom of the cover 12 and which comprises, in the vicinity of its outer peripheral edge 58, a cylindrical annular skirt d axial orientation 60 comprising coupling means allowing, according to a known design, a relative axial movement of the pressure plate 16 relative to the cover 12, the coupling means acting directly between the

  pressure plate 16 and cover 12.

  The coupling means here consist, in a known manner, of elastic tongues 59, one end of which is fixed, for example by riveting, to the outer peripheral edge 58 of the web 56, constituting the bottom of the cover 12, and the other end of which is fixed to the pressure plate 16.

  Here the fixing is carried out using rivets 61.

  Alternatively it can be carried out using screws, bolts or any other fixing member. The edge 58 is drilled to allow access to the heads 63 of the rivets 61 for fixing the tongues 59 to the pressure plate 16. The friction face 40 of the plate 16 has locally housings for accessing said rivets. Note that in Figure 2 we have not shown the holes in the edge 58 to access the heads of the rivets 61, nor the stamped areas of the cover 12, in the form of a square (upper part of Figure 1) used to fix the tabs 59 to the

cover 12.

  Thus, the tongues 59 are first fixed to the edge 58, the diaphragm 14 already being mounted on the cover 12, then one fixes

  the other end of the tabs 59. This gives a first sub-

  unitary assembly comprising the pressure plate 16, the

diaphragm 14 and cover 12.

  It will be noted that here the clutch is of the pushed type, the diaphragm 14 being pivotally mounted on the cover 12. Normally, the diaphragm 14 is supported on the rib 52 of the cover 12, forming a primary support for the diaphragm 14, and urges, thanks to the bosses 46, the pressure plate 16 in the direction of the reaction plate 20 for tightening the linings of

  friction 36, 38 between the plates 16 and 20.

  Thus, the torque is transmitted from the crankshaft 25, by means of the

  friction disc 18, at the input shaft 37 of the gearbox.

The clutch is thus engaged.

  To disengage the clutch, one acts by pushing, by means of a disengaging stop 39, on the internal end 57 of the fingers 55 of the diaphragm 14. The latter rocks and then bears on its

  secondary support, described below.

  The tabs then recall the pressure plate 16 towards the bottom of the cover 12 so that the linings of

friction 36 and 38 are released.

The clutch is then disengaged.

  The diaphragm 14 is here pivotally mounted on the cover 12, in a known manner, using assembly tabs 13 made in one piece from the latter by cutting and folding, the cover

being in pressed sheet metal.

  The tabs 13 are essentially of axial orientation and pass through the diaphragm by means of orifices which the latter presents at the level of the root of its fingers 55, that is to say at the periphery

  internal 54 of the Belleville washer 50.

  These orifices form the enlarged blind end of the slots separating the fingers 55. Beyond the diaphragm, the legs, at their free end, are folded radially outwards, that is to say in the direction opposite to the axis XX of the assembly, for the formation of a wedge elbow for a ring-crown bearing on the other face of the diaphragm 14. This ring-crown, interposed axially between the diaphragm 14 and the wedge elbow, is frustoconical in shape and has a rounded shape at its outer periphery for contact with the diaphragm 14 and formation of a support

  secondary opposite primary support 52.

  Of course as a variant (not shown), a support washer can be interposed axially between the wedging elbow and the

crown.

  As a variant, the assembly tabs can be replaced by small columns whose head is profiled to form a secondary support, these small columns carrying a rod interposed between the bottom of the cover 12 and the diaphragm 14 to constitute the support

primary.

  The clutch can of course be of the pulled type, the Belleville washer 50 then resting, at its external periphery, on an annular rib of the cover 12 and, at its internal periphery, on a

pressure plate boss 16.

  In this case, action is taken using the release bearing 39 by pulling on the internal end of the fingers 55 of the diaphragm to

disengage the clutch.

  Similarly, the friction disc may have only one friction lining inside which the disc 34 is embedded. This lining has two faces to cooperate with the faces

friction 32 and 40.

  The cover 12 also includes fixing means 62 which extend axially from its outer peripheral edge 58 in the direction of the reaction plate 20 and which allow the fixing of the cover 12 on the plate 20 so as to produce a clutch module constituting a sub-assembly that can be mounted and fixed

  on the support flange 22, for example by a series of rivets 64.

  As will be explained in more detail below, the fixing means 62 are axial fixing lugs produced integrally by cutting and folding from the cylindrical annular skirt of axial orientation 60 which extends the outer peripheral edge 58 of the annular web 56. The skirt 60 thus has a comb shape, the legs 66 constituting the free ends of the

skirt 60.

  Rivets 64 are located radially below, that is

  that is to say in the direction of the axis XX, fixing means 62. They are also carried by the reaction plate 20, their head 65 being mounted in a recess, in the form of countersink, produced in the friction face 32 of the reaction plate 20. The rod of the rivets 64 passes through the plate 20 to extend axially in a hole made in the

crown 30 of flange 22.

  Alternatively, the rivets can be replaced with screws.

  For a given radial size of the module 10, determined for example by the casing 11 belonging to the gearbox and inside which the clutch module 10 is arranged, we obtain thanks to the fixing means 62, a great height for

the friction linings 36, 38.

  Furthermore, the damper 44 is in all cases intact and

  it can be of the standard type and the cover is simplified.

  The attachment means will now be described in more detail.

  of the cover 12 on the reaction plate.

  The fixing means 62 consist of a series of fixing lugs 66, of generally axial orientation, which extend axially from the free axial end edge 100, turned axially in the direction of the support flange 22, that is that is also towards the reaction plate 20. The edge 100 forms the end

axial free of the skirt 60.

  The legs 66, forming tenons, are for example distributed angularly in a regular manner, in four groups of six, as can be seen in FIG. 2, at the external periphery of the cover 12. These legs 66 extend the skirt 60 in the direction of

flange 22.

  Each group of four fixing lugs 66 is received, here with mounting clearance, in a passage 68 of axial orientation formed in the external peripheral edge 70, of generally annular cylindrical shape, of the support flange 22. The divided lugs 66 provide also a function of centering the cover 12 by

compared to flange 22.

  In the embodiment illustrated in the figures, each passage 68, forming a mortise, is produced in the form of a through notch at its two ends, that is to say in the two opposite annular transverse faces 21 and 23 of the flange 22

of the reaction plate 20.

  Each notch 68 is delimited radially inwards by a bottom 74 and it opens radially outwards into the

  outer peripheral edge 70 of the flange 22.

  The width of each notch, measured in the circumferential direction and delimited by its two parallel flanks 76, is slightly greater than the circumferential width of a group of four fixing lugs 66, so that the latter can be introduced axially into the notch 68, from right to left considering Figures 1 and 2. There is thus formed a

  stud and mortise type assembly.

  In the embodiment illustrated in the figures, the flange 22 carries at its periphery a starter ring 78 of generally annular shape comprising an annular cylindrical body

79 and teeth 82.

  According to a known design, the starter ring gear 78 is mounted by hooping and / or welding on the cylindrical edge and

  external device 70 of the flange 22 of the reaction plate 20.

  In the mounting position of the starter ring gear 78 illustrated in FIG. 1, the internal cylindrical surface 81 of the annular cylindrical body 79 of the starter ring gear 78 delimits the passages formed by the notches 68 radially outwards. The length of each fixing lug 66 is such that, in the position inserted into its notch 68, its free end 90 is located axially at least at the level of the external radial face 23 of the flange 22 of the reaction plate 20 and at the level of the side face external aligned of the starter ring gear 78, so as to be able to fix by welding the free ends 90 of the fixing lugs 66, for example simultaneously with the flange 22 of the

  reaction plate 20 and starter ring gear 78.

  The radial thickness of the fixing lugs 66 is slightly less than the radial distance separating the bottom 74 of the notches 68 from the internal cylindrical bearing surface 81 of the starter ring so that it can be introduced below the starter ring 78 , i.e. inward relative to

the latter.

  The welding operations of the free ends 90 make it possible to axially immobilize the fixing lugs 66 relative to the flange 22 of the reaction plate 20 and to immobilize in rotation the starter ring gear 78 relative to the plate of

reaction 20.

  According to an alternative embodiment, not shown in the figures, the axial immobilization of each fixing lug 66 relative to the flange 22 can be ensured by radially folding the free end section 90, then protruding axially beyond the external lateral face 23, inward or outward facing the external lateral face 23 of the flange 22 or facing the

  lateral face opposite the starter ring gear 78.

  Immobilization can also be achieved by crimping the free end sections 90 in the manner of a rivet head or by

any other equivalent means.

  The design of the fixing means 62, constituted by the tabs 66 made integrally with the skirt 60 of the stamped sheet cover 12, is particularly advantageous in that it allows, in a simple and effective manner, to ensure the connection of the cover 12 with the reaction plate 20 by bringing it axially in order to introduce the tabs 66 into the axial notches 68, then to adjust the relative axial position of the cover 12 relative to the reaction plate 20, and finally to securing

final, for example by welding.

  The number and the grouping of the fixing lugs 66 and the arrangement of the notches 68 depend on the applications. The length of the legs 66 is a function of the length of the notches 68. As a variant, the axial passages which receive the free ends 90 of the fixing legs 66 can be formed at the periphery of the reaction plate 20 and not in the flange 22 attached to the latter, as shown in the application FR

95.12523.

  The design of the fixing lugs 66 produced integrally with the cylindrical annular skirt of axial orientation 60 is also particularly advantageous in that it has a very small radial size and that it allows to have a space

  sufficient annular radial between the skirt 60 and the opposite internal face

  screw of the part 11 of the gearbox casing so as to dispose therein in a simple and economical manner a target 110, here in one piece with the cover 12, intended in particular to be associated with a sensor (not shown) carried by the casing 11 and which, in association with the movement of the target 110 linked in rotation to the cover 12, makes it possible to

  determine and measure the speed of rotation of the cover 12.

  In accordance with the teachings of the invention, the target consists at least of a tongue 112 produced integrally by cutting and folding with the annular skirt 60 of the

cover 12.

  As can be seen in the figures, the main tongue 112 constituting the target is of generally axial orientation and it extends from the free end edge 100 of the annular skirt 60 over a length significantly shorter than that of the tabs of attachment 66 and it is offset radially outward relative to these

fixing lugs 66.

  For this purpose, the tongue 112 is connected to the end edge

  free axial 100 by a bent portion 114.

  The length of the tongue 112 is such that its edge

  free axial end 116 is located axially at a distance, that is to say

  say with axial play, with respect to the internal lateral face opposite

  screw of the starter ring gear 78 opposite which it extends.

  In order to refine the measurement of the speed of rotation of the cover 20 and / or of the acceleration of the latter, it is possible to carry out, always simultaneously integral with the annular skirt 60, a whole series of secondary tongues 112 ' which are angularly distributed in a regular manner along the annular skirt 60. These tongues 112 'also belong to the target 110. In section through a transverse plane, the design and the profile of each of the secondary tongues 112' are identical to those

  of the tongue 112 constituting the main target.

  The secondary tongues 112 ′ are therefore offset radially outward relative to the fixing lugs 66, and

  this thanks to the angled portion 114.

  However, in order to distinguish the main target 112 from the secondary tongues 112 ′, the width of the latter, measured tangentially, is much less than the tangential width of

  the main tab 112, as can be seen in FIG. 2.

  Thus, during the rotation of the cover 12, the fixed sensor (not shown) sees a large series of secondary tongues 112 'pass successively, then once per revolution, the tongue

main 112.

  According to a known design, the successive passage of the tongues 112 and 112 'which are metallic, in front of a sensor adapted for this purpose, allows the latter to collect signals

  representative of the rotation of the cover 20.

  The annular skirt 60 is thus in the form of a double comb comprising a comb, arranged radially inwards and constituted by the six groups of four fixing lugs 66, and another comb, arranged radially outwards, which is constituted by the series of secondary tabs 112 'and by the

main tab 112.

  Alternatively, the peripheral annular skirt of the cover, with its fixing lugs and its target-forming tabs, can be produced in the form of a part.

  attached to the body of the cover.

  Of course the free end of the secondary tongues 112 'and / or of the tongue 112 can come to bear against the crown

  starter 78 to determine the position of the cover 12.

  The free end sections 90 of the tabs 66 can then be easily crimped or folded down radially, as mentioned above, in contact with the flange 22 and / or the starter ring gear 78. It

  is all the more so as the fixing lugs are split.

  In all cases, a good measurement is obtained with an economical sensor because the target 110 is offset radially outward relative to the legs 66 and to the skirt 60, a large radial distance existing between the target 110 and the reaction plate

16 whose form is simple.

  As will be understood, and it appears from FIG. 2, each group of fixing lugs 66 (one group per passage 68) is divided into four lugs 66 for the formation of tongues

  secondary 112 'alternating circumferentially with the legs 66.

  The tabs 112 'are narrower circumferentially than the

mounting brackets.

  Thanks to this arrangement, a large number can be obtained.

secondary tabs 112 '.

  This number depends on the applications and in particular on the type

  of the vehicle engine (petrol - or diesel).

Claims (17)

  1. Clutch module (10), in particular for a motor vehicle, of the type comprising a set of adjacent parts of generally annular and coaxial shape among which are successively axially arranged a cover (12), a diaphragm (14) bearing on the cover (12), a pressure plate (16) providing a support (46) of the diaphragm (12) and linked in rotation to the cover (12) by coupling means (60) allowing an axial displacement of the pressure plate ( 16) relative to the cover (12), a friction disc (18) suitable for being connected to a driven shaft, and a reaction plate (16) fixed to the cover (12) by fixing means (62) arranged at the outer periphery of the module (10), of the type in which the reaction plate is suitable for being mounted on a flange (22) of support integral in rotation with a driving shaft, by means of a series of fixing members (64), and of the type in which the cover comprises, at its outer periphery, u ne annular skirt (60) of axial orientation from which come a series of fixing lugs (66) which extend axially and each of which axially crosses a corresponding passage (68) of axial orientation formed at the periphery (70) of the reaction plate (20) or of the flange (22), for opening axially beyond the radial face (72) of the reaction plate (20) or of the flange (22) opposite its radial friction face (32), the free end section (90) of at least certain fixing lugs (66) being retained axially with respect to the reaction plate (20) or to the flange (22), characterized in that the cover comprises at least one target (110), for a scrolling sensor in rotation of the cover, which is made integrally with said annular skirt (60).   2. Clutch module according to claim 1, characterized in that the target (110) is constituted by at least one tongue (112) of axial orientation arranged radially outwards by relative to the annular skirt (60).   3. Clutch module according to claim 2, characterized in that the fixing lugs (66) and the tongue (112) extend axially from an axial end edge (100) of the skirt annular (60).   4. Clutch module according to any one of   claims 2 or 3, characterized in that there is an axial clearance between   the free end (116) of the tongue (112) and the portion opposite the external periphery of the radial friction face of the reaction plate (20) or of the flange (22, 78). 5. Clutch module according to any one of   Claims 2 and 3, characterized in that the free end (116) of   the tongue (112) bears against the radial friction face of the   reaction plate (20) or flange (22).   6. Clutch module according to any one of   Claims 2 to 5, characterized in that the annular skirt (60) of the   cover comprises a series of tongues (112, 112 ') angularly distributed among which at least one (112) of the tongues, called the main tongue (112), constitutes said target (110), said tongues being offset radially outwards compared to the annular skirt (60).   7. Clutch module according to claim 6, characterized in that the main tongue (112) forming the target (110) has a width, measured in the tangential direction, which is different   the width of the other tabs (112 ').   8. Clutch module according to claim 7, characterized in that said other tongues (112 ') are distributed   angularly on a regular basis.   9. Clutch module according to claim 8, characterized in that the fixing lugs (66) are circumferentially divided and in that said other tongues (112 ')   alternate with the fractionated fixing lugs (66).   10. Clutch module according to any one of   previous claims, characterized in that the end (90)   free of the fixing lugs (66) is welded to the reaction plate (20) or flange (22, 78).   11. Clutch module according to any one of   Claims 1 to 10, characterized in that the free end (90) of the   fixing lugs (66) is folded radially.   12. Clutch module according to any one of   previous claims, characterized in that each passage   (68) is an axial notch (68) formed in the external peripheral surface (70) of the reaction plate (20) or of the flange (22) and which is   open radially outwards.   13. Clutch module according to any one of   previous claims, characterized in that the tray   reaction or the flange (22) carries at its outer periphery (70) a starter ring (78), and in that each passage (68) is arranged radially inward relative to the ring starter (78).   14. Clutch module according to claim 13 taken in combination with claim 12, characterized in that the starter ring gear (78) is mounted on a bearing surface (82) machined in the external peripheral surface (70) of the reaction plate or of the flange (22) whose radial depth is less than that of the axial notch (68, 74).   15. Clutch module according to one of claims 13   or 14 taken in combination with claim 10, characterized in that the free end (90) of the fixing lugs (66) is welded to the starter ring gear (78, 88).   16. Clutch module according to one of claims 13   or 14 taken in combination with claim 11, characterized in that the free end (90) of the fixing lugs (68) is folded radially outwards opposite a facing portion (88) starter ring gear (78).   17. Clutch module according to any one of   claims 15 and 16, characterized in that the free end (116)   the tongue (112) comes into contact with the starter ring gear (78).