FR2689194A1 - Docking assembly with plug for diaphragm of a clutch, in particular for motor vehicles. - Google Patents

Abstract

The docking assembly comprises, for the traction action of a clutch release bearing (10) on the diaphragm (20) of a clutch, on the one hand, a docking part (30) having a bush (33) and, on the other hand, extending annularly inside said socket (33), a coupling ring (40). A removable and deformable plug (80) is mounted on the docking part (30). The ring (40) is retained by said plug (80) and the docking part (30). Automotive vehicle applications.

Description

The present invention relates to a docking assembly for a diaphragm

  clutch, in particular for motor vehicles of the type comprising, for the traction action of a clutch release bearing on the diaphragm of the clutch, on the one hand, a docking part having a collar, suitable for its support on the diaphragm on the side thereof opposite the clutch release bearing, and a sleeve suitable for passing through the diaphragm by virtue of its central opening, and, on the other hand, extending annularly inside said sleeve of this docking piece, a coupling rod, which, elastically deformable radially, is suitable for coupling the clutch release bearing by simple

it clicks into place.

  Such an arrangement is described in documents FR-A-2 633 353; FR-A-2 597 560, GB-A-2 193 284 and GB-A-2 182 111 In these documents, the rod is open

through a slit.

  In practice, the docking part with its rod belongs to a primary block comprising the diaphragm clutch mounted on the engine of the motor vehicle, while the declutching stop belongs to a block

  secondary mounted on the vehicle gearbox.

  The assembly is carried out by bringing the motor closer to the gearbox and securing the clutch release bearing in traction with the part

snap docking.

  A problem arises, because before assembling the engine with the gearbox, it may be desirable to test the engine equipped with its clutch.

  diaphragm on which the docking piece is mounted.

  During these tests, the rod can escape due to its mounting with a certain play in the docking room. The object of the present invention is to overcome this drawback, and therefore to create, in a simple and economical manner, a new docking assembly making it possible to carry out tests before it is assembled with the stop.

  while also providing other benefits.

  According to the invention, a docking assembly of the above-mentioned type is characterized in that it comprises a removable and deformable plug mounted on the docking piece, and in that the coupling rod is retained by said shaped plug for this purpose and the docking piece The plug can be mounted on the docking piece inside or outside the socket of the docking piece It is deformable, in particular retractable, so as not to break during of its assembly or disassembly. Thanks to the invention, the rod is held by the plug, so that it is possible to test the motor without the rod escaping and being noisy After having carried out these tests, the plug can be removed to

  subsequently mount the clutch release bearing.

  We will appreciate that the solution is simple and economical, because the cap adapts to the room

  docking and reed, which remain unchanged.

  This plug also avoids losing the rod before mounting the clutch on the engine. In fact, clutches equipped with docking parts are usually stored in boxes and, thanks to the plug fitted in advance with the docking part, the operator does not risk losing a rod by entering

  body, clutch by the docking part.

  This arrangement is particularly advantageous when the rod has at least one projecting tab opened by a slot delimited by radial strands Indeed, thanks to the plug, even if one comes

  grab the strands, there is no risk of losing the rod.

  In all cases, we are sure that the rod will be present when we come to secure the stop

  declutching with the docking part.

  According to another characteristic, the plug is split and is provided with gripping means for its extraction from the docking piece. Advantageously, these means consist of a tongue located in the vicinity of the slot. The slot allows retraction and expansion of the cap and prevents it from breaking, especially during disassembly by pulling on said tongue Advantageously, the slot is flared in

  direction of the front face of the cap.

  The flare allows retraction of the plug This plug is mounted with radial clearance on the docking part This radial clearance can be small thanks to the flare, which advantageously extends over more than the

half the length of the slit.

  Thus, by pulling on the extraction tab, it causes a radial expansion of the plug allowing

  later extracting it.

  More precisely by twisting by pulling on the extraction tab with a spiral movement towards the center, a slight radial expansion of the plug is caused, enabled by said radial clearance, followed by a

  radial retraction allowing extraction of the plug.

  Advantageously, the plug has a reduced thickness at its slot, for example by a

  chamfer in one of the edges of the slot.

  Thanks to this arrangement, the radial expansion necessary for removing the plug is advantageously reduced, more precisely the limit is

  radial clearance between said plug and the docking part.

  The cap is advantageously made of plastic. It is thus easy to manufacture by molding, light for testing, easily identifiable by giving it, for example, a red color, retractable by elasticity, while allowing a reduction in noise.

during the tests.

  Advantageously, the stopper is provided with holding means to maintain its tongue in a generally vertical arched position during tests on the vehicle and reduce its axial size to avoid any interference, in particular with the measuring and mounting devices of the clutch.

  The description in the appendix illustrates the invention in

  reference to the accompanying drawings in which: FIG. 1 is an elevational view with local cutaway of a clutch mechanism equipped with an assembly according to the invention; Figure 2 is an axial sectional view of a coupling part-clutch release bearing equipped with the docking part; Figure 3 is a view showing the plug according to the invention; Figure 4 is an elevational view showing the rod; Figure 5 is a front view showing the docking part equipped with its plug; Figure 6 is a sectional view along line 6-6 of Figure 5; Figure 7 is an axial sectional view of the plug; Figure 8 is a view along arrow 8 of Figure 9 of the plug; Figure 9 is a view along arrow 9 of Figure 7; Figure 10 is a view along arrow 10 of Figure 9; Figure II is a partial half-view in axial section of the docking part; Figures 12 and 13 are views similar to Figures 5 and 6 for another embodiment; Figures 14 and 15 are views similar to Figure 1 for yet other embodiments; Figures 16 and 17 are identical views

  in Figures 14 and 15 with the tabs raised.

  As illustrated in FIGS. 1, 2, on the one hand, a docking piece 30 (or, for the coupling of a clutch release bearing 10 on the diaphragm 20 of a clutch). support cup) subject to this diaphragm 20 and, on the other hand, a coupling ring, elastically deformable radially, carried by the docking piece 30 and suitable for a snap-fastening of the

  stop 10 on the docking piece 30.

  The clutch is of the "pulled" type and comprises a unitary clutch mechanism 21 with a cover 22 for fixing to a reaction plate (not shown), a

  pressure plate 23 and diaphragm 20.

  The bottom of the cover 22 is open and offers a support cord 24 to the external part of the washer

Belleville diaphragm 20.

  The plate 23 also provides support 25, here split, to the internal part of the Belleville washer

diaphragm 20.

  The plate 23 is mounted axially movable by

  relative to the cover 22 by being linked in rotation to it

  here, here by tangential tabs 26.

  The cord 24 is disposed radially above the support 25, so that to disengage it is necessary to act in traction, in the direction of the arrow F in FIG. 2, on the internal end of the fingers 27 of the diaphragm 20 to cancel the solicitation normally exercised by said

diaphragm 20 on plate 23.

  The fingers 27 form the internal part of the diaphragm 20, on the one hand, fragmented into fingers 27 by slots 28, and on the other hand, centrally open for

  the passage of a socket 33 of the part 30.

  The diaphragm 20 is provided with widened notches 29, six in number here, at the internal end of the fingers 27 for passage of assembly legs 51, of generally axial orientation, of a washer

  elastic 50 wavy with axial action.

  It is this washer which allows here to report

  suitably the docking piece on the diaphragm.

  The washer 50 carries axially on a first face of the internal end of the fingers 27, that facing the stop 10, and is hooked, directly or indirectly, by its legs 51 on the docking piece

  after axial crossing of the notches 29.

  Thus the washer 50 is supported on a first face of the diaphragm and urges the part 30 in contact with the second face of the fingers 27, that turned opposite the stop 10 The diaphragm 20 is therefore tightened

elastically by pinching.

  To do this, the docking piece 30, of annular shape, is provided, here radially, with a profiled flange 31, of V-shaped section, to present a

annular support bead 32.

  It is this bead 32 which bears on the diaphragm 20 (FIG. 2) while being held axially without play at

  contact of the end of the fingers 27 by the washer 50.

  The part 30, advantageously made of stamped sheet metal, has at its internal periphery a sleeve 33, which is connected to the flange 31 by a rounded bend elbow and which, extending generally axially,

  passes through the central opening of the diaphragm 20.

  The collar 31 is provided with local deformations projecting axially 34, here three in number, for penetration into the notches 29 and locking in

  rotation of the part 30 relative to the diaphragm 20.

  This flange 31 is provided at its outer periphery with six notches 35, regularly distributed circularly like the legs 51, for passage of said legs 51 whose free end 52 is in the form of a hook, to engage, with the dorsal face of a

retainer 60.

  The coupling ring 40 comprises, for its pre-centered retention relative to the docking part 30, at least two tabs 41 projecting radially towards

  the outside, one of which is open.

  Here the open tab 41 penetrates radially at least locally in a notch 36 axially open that has the free end of said sleeve 33, while the other projecting tab is housed in a boss 37, projecting outward and closed

  circumferentially, made in the socket 33.

  Here the sleeve 33 has, at its free end, a notch 36 and two bosses 37 as well as a radial flange 38 directed towards the axis of the assembly and

  delimiting the free end of said socket 33.

  The notch 36 is deep and extends to

diaphragm 20.

  The bosses 37 extend radially below the diaphragm 20, having a low height. They are

  produced here by stamping as part 30.

  As a corollary for its maintenance in the free state in the cup 30, the rod 40 has, here three projecting legs 41, one of which is open by a slot 43 for delimitation of radial strands 42, with a symmetrical arrangement of the legs closed by compared to

open paw.

  The bosses 37 are intended to receive, in a complementary manner, the closed legs 41, while the notch 36 is adapted to receive the open leg 41 and to allow a passage with circumferential clearance of the radial strands 42, which extend in- below the washer Overall, the bosses 37 and the notch 36 are distributed at 1200, with respect to one another, in order to limit the tilting of the rod mounted with slight play at

inside the socket 33.

  The bosses 37 are produced by radial deformation projecting outwards from the bush 33 and axially affecting the whole of the latter, as well as the root of the flange 31 They are closed axially by the flange 38, being circumferentially continuous

  with the current part of the socket 33.

  These bosses 37 affect a frustoconical bearing 39 adjacent to the rim 38 by interrupting the latter. The bearing 39 is formed in the internal bore 33a of the sleeve. As is known, the slot 43 allows an increase in the elasticity of the rod 40 as well as its disassembly. This rod 40, here of generally annular shape, has a planar shape, being produced in round wire, two of its legs 41 being generally in the form of a half-wave, complementary to those of the bosses 37, the strands 42

  extending radially in the direction of the washer 50.

  The rod 40 is carried internally by the piece

  and more precisely by the internal bore 33 a.

  It is suitable for bearing after mounting the stop, on the one hand, on the frustoconical bearing 39 of the sleeve 33, and on the other hand, on a driving bearing formed by one of the sides of a groove ,

  presented by the clutch release bearing 10 (Figure 2).

  The rod 40 allows an axial connection at least in the direction of the flece F of Figure 2 between the

part 30 and the stop 10.

  This stop 10 comprises an operating element, suitable for being subjected to the action of a control member, such as a declutching fork, and a driving element 13, provided with the groove for receiving the rod 40, able to act in traction on the diaphragm 20

  via the rod 40 and the part 30.

  Here the element 13 is formed by means of an axial extension of the inner ring of a bearing with

  balls 14, which is coupled by a cover 16 to element 15.

  This operating element 15 has an L-shape inverted in section and comprises a transverse metal flange 17 on which is molded an axial sleeve 18 of plastic material, for sliding on a fixed guide member, such as a tubular declutching trumpet. The stop 10 is of the self-centering & maintained type and has for this purpose an elastic means with axial action 19, here a wavy washer, which bears on the flange 17, for biasing of the outer ring of the bearing 14 in the direction of a radial rim 1 directed towards the axis of the assembly of the cover 16 assembled by crimping (FIG. 2) with the flange 17 and using

folded legs of said flange 17.

  It is on radial edges 2, in the form of hood retaining hooks 16, that is suitable for acting here.

a clutch release fork.

  The rod 40 radially elastically deformable is retained axially during snap-fitting mounting of the stop 10 on the part 30, by a cage 67 formed axially between a bearing surface of the sleeve 33 and the retaining part 60 reported here by crimping on the flange 31 , said plate 60 having openings

  61 for the passage of the legs 51 and hooking thereof

  this. The part 60 has an axial rim at its external periphery, in which are formed by deformation, crimping lugs 63, in the form of a half-wave, penetrating into notches 62 (FIG. 11) circumferentially of complementary shape, which the periphery has external of the flange 31 in the release part thereof The flange covers the

flange 31.

  Thanks to this, an irreproachable disassembly and reassembly of the stop can be carried out, the rod 40 retained in the cage 67 always occupying the desired position. Here the strands 42 of the rod 40 are arranged in a median radial plane penetrating axially between the diaphragm 20 and the washer 50 generally comprising a transverse wall with undulations, regularly distributed circularly, extending

  circumferentially each between two legs 51.

  The legs 51 extend in axial projection by folding from the external periphery of the washer and are connected to the latter each by a zone

overall planar anchor.

  One of the corrugations 53 is replaced by a bridge 70 connecting together two anchoring zones

  successive being in the same plane as these.

  Said bridge 70 is in correspondence with the open tab 41 of the rod 40 for access thereto and disassembly of the stop using a clamp making it possible to spread the strands

  42 as described in application FR-A-2 660 031.

  As is known, the clutch release bearing 10 belongs to a secondary block comprising the gearbox, while the docking assembly 30.40 belongs to a primary block comprising the clutch.

mounted on the vehicle engine.

  Before assembling the gearbox with the vehicle engine, it is often necessary to test the vehicle engine equipped with its clutch.

  diaphragm on which the docking assembly is mounted.

  To do this, a docking assembly of the above-mentioned type is characterized in that it comprises a removable and deformable plug mounted on the docking piece 30, and in that the coupling ring 40 is retained by said plug 80 conformed for this purpose and the docking piece 30 Here the removable plug 80 is retractable and is mounted inside the sleeve 33 of the docking piece, while the coupling ring 40 is interposed radially between said plug 80 and the

docking part 30.

  Here, this plug 80 is advantageously made of plastic and is produced by molding. It is red or other in color for its location relative to the docking piece. 30 This plug 80 is mounted with a radial clearance on the docking piece. 30 and is split, in particular to allow its retraction during the disassembly described below, by being opened by a slot 90 The plug is thus mounted with slight radial clearance inside the sleeve 33, elastic and provided with gripping means 81 for its extraction These means 81 here consist of a tongue 81, of axial orientation, located in the vicinity of the slot 90 The free end of this tongue 81 is provided with a protuberance 84

  allowing the operator to grasp the tongue 81.

  This tongue comes axially from the rear or dorsal face of the plug 80 This plug 80 is of annular shape and comprises a main part 83 in the form of a ring The front or front face of this annular ring 83 has a penetrating shape 93, here a

chamfer.

  At its outer periphery, this ring 83 has a groove 85 delimited by an annular projection 86 in the form of a wedge The groove 85 is shaped to receive the rod 40 and is interrupted by the slot 90 as well as by a tab 82 projecting radially and by a projection 89 in the form of a lunule located in the vicinity of the slot 90

and tongue 81.

  The projection 86 is also interrupted at the level of the tab 82, the interruption being wider

  circumferentially than said leg.

  The tab 82, as visible in FIG. 5, is suitable for penetrating into the notch 36 between the strands 42 of the rod, while the lunula 89 is suitable for penetrating one of the bosses 37 To do this, a dish 88 , in the shape of a pointed bow, extends between the front face of the ring 83 and the tab 82, the circumferential width of which is here slightly less than or equal to the circumferential distance separating the strands 42 from the rod 40 when the latter is in the free state A recess 87 extends from the dorsal face of the ring 83 to the tab

82.

  The tab 82 allows a stop in rotation of the plug 80 relative to the rod 40 and therefore relative to

the docking part 30.

  The lunula 89 also participates in the stop of rotation of the stopper 80, said lunula being housed inside the boss 37 concerned and penetrating with slight play in the lug 41 concerned. The rotation stop

  made by cooperation of the lunula 89 with the tab 41.

  Thanks to this arrangement, the circumferential clearance

of plug 80 is very small.

  The slot 90 axially flares towards the front face of the ring 83 (FIG. 10) The ring 83 is of reduced thickness at the level of the slot 90 and is, for this purpose, provided with a chamfer 92 reducing the thickness of the edge 95 of the slot 90, opposite the edge 94 adjacent to

lunula 89.

  More specifically, the edge 95 of the slot 90 is straight, while the other edge has a straight portion 94 extending from the dorsal face of the ring 83 to a chamfered portion 91 flaring the slot 90 in

  direction of the front face of the ring 83.

  As a variant, the edge 95 can be like the edge 91, 94, the flaring then being V-shaped. Here the flare extends axially over more than half of

the length of the slot 90.

  This flare allows a reduction in the radial clearance of mounting of the plug inside the bush 33, said clearance allowing a radial expansion of the plug 80

  during its disassembly described below.

  Of course, the width of the slot depends on the applications, so that the slot can be closed during

mounting the plug 80.

  The projection 86 is shaped to match, on the one hand, the shape of the frustoconical bearing 39 (Figure 11) and, on the other hand, the cylindrical bearing 39 a connecting to said bearing 39, being of smaller diameter than the internal bore 33 a of the current part of the sleeve 33. The mounting of the plug 80 can be done before crimping of the retaining piece 60 on the flange 31 The plug 80 is then engaged axially on the side of the flange 31 in the direction rim 38, then the rod 40 is mounted in the groove 85, the expansion of which is caused by the chamfer 93, the projection 86 being in abutment against the part 39, so that the plug does not

can go out.

  After this axial threading of the rod 40 on the plug 80, the retaining piece 60 is crimped onto the

  bezel as described above.

  Of course, the invention offers numerous mounting possibilities. Thus the rod 40 can be mounted in advance on the docking part with the

retainer 60 set thereon.

  In this case, the plug 80 is mounted by simple axial threading, during threading the chamfer 93 is allowed to cooperate with the flange 38 and to resiliently tighten the slot 90, then to penetrate inside the rod for cause its expansion, the annular projection 86 wedging between the ranges 39 and 39 a During this threading the rod 40 is allowed to

enter the throat 85.

  In all cases, after fitting the plug 80, the rod 40 is retained by the plug 80 and the part

docking 30.

  More specifically, the rod 40 is trapped elastically radially between the plug 80 and the docking piece 30 The rod 40 is trapped radially between the groove 85 and the internal bore 33 a of the sleeve 33. Axially the rod 40 is trapped between the internal rim 60 a of the retaining part 60 and the inclined bearing connecting the internal bore 33 a to the bearing 39 a It is thus not very noisy during the tests and is retained in particular axially and radially by the groove 85. Axially the plug 80 cannot come out, because, on the one hand, in one direction the rod 40 comes to bear against the internal rim 60 a thus preventing the plug from coming out, and, on the other hand, the projection 86 wedges it axially in the other meaning through cooperation with the

scope 39.

  It will be noted that the lunula 89, by cooperation with the flange 60 a, also prevents the plug 80 from coming out, in particular when the tongue 81 is pressed axially. This lunula 89 therefore constitutes a device for

  safety avoiding any ejection of the cap.

  To extract the plug 80, after having carried out the tests on the engine, it suffices to pull on the tongue 81 by making a spiral movement towards the center causing a slight radial expansion of the plug, followed by a radial retraction permitted by

the widening of the slot 90.

  When the tongue is pulled, the portion 94 of the slot 90 is allowed to move radially and axially relative to the edge 95 and, thanks to the chamfer 91 after a limited relative displacement of the portion 94 relative to the edge 95, an extraction of the

cap 80 by twisting.

  All this is made possible thanks to the slight radial clearance existing in practice between the projection 86 and the

  internal bearings 39.39 a from the socket 33.

  It will also be appreciated that the chamfer 92 limits the necessary radial movement of the portion 94 relative to the edge 95 to cause the extraction of the

cap 80.

  Of course, the size of the lunula 89 is dimensioned to disturb the twisting movement of the portion 94 relative to the edge 95 as little as possible, while cooperating internally with one of the

closed tabs 41 of the rod 40.

  Of course, the present invention is not limited to the embodiment described. In particular, the presence of a retaining piece is not compulsory (FIGS. 12 and 13), and the open tab 43 may not consist of two radial strands, but for example have two branches in an arc, possibly with axial extensions, as

  described in the aforementioned document FR-A-2,597,560.

  In this case, only two radial legs

can be planned.

  The docking piece 30 can be suitably secured to the diaphragm 20 according to the arrangement described in the aforementioned document FR-A-2 597 560 and thus present at the right of the collar 31, and generally parallel to the latter, retaining fingers from axial lugs crossing the diaphragm and suitable for ensuring, in cooperation with the flange, the maintenance

  axial of the docking assembly on the clutch 20.

  Securing the docking part to the diaphragm can also be carried out as in documents GB-A-2 182 111 and GB-A-2 193 284 Likewise, the docking part may not be provided with bosses, but have slots for receiving the legs

  closed from the rod (Figures 12 and 13).

  In the light of document GB-A-2 193 284, it can be seen that the tab 82 can be less wide than the distance separating the two strands of the rod, said tab being dimensioned to engage in the terminal notch of the socket and allow the stopper to rotate. The open tab 41 can penetrate into the notch 36 by crossing it completely, even before mounting the stop, unlike the strands 42 of FIG. 5, which only penetrate locally into

notch 36.

  The gripping means may have another shape and consist, for example, of a striated cylindrical part, of axial orientation, located at the edge

91.94.

  The tongue 81 can be inclined outwards or extend radially while being in the form of a square. The plug 180 (FIGS. 12 and 13) can be mounted on a docking piece 130 of the type described in document GB-A-2 182 111, to which reference will be made for more details. In this case, the socket 133 of the docking piece 130 has, not bosses, but openings 137 at its free end, for the passage of the legs 141 of the rod 140, as well as a notch 136 for the passage of the radial strands 142 of the rod. The projection 186 of the plug is then in the form of a collar capable of cooperating with the edge of the free end of the sleeve 133, extending to

  the outside of the docking part 130.

  The plug 180 is identical to the plug of the preceding figures at its flared slot 90 and as regards the gripping means 81.84 II

  also has a groove 185 for receiving the rod.

  The rod 140 is retained by said plug 180 and the part

docking 130 during the tests.

  Here, it is the sleeve 133, by its shape, which is inserted axially between the external flange 186 and the rod 140, the plug having a groove 187 for this purpose, the groove extending axially between the flange 186 and a thickened zone in which the groove 185 is formed The collar 186 and said thickened zone therefore delimit the groove 185, while the other groove retains the rod axially and radially in cooperation with the internal bore of the sleeve 133 and

the scope 39.

  The plug is mounted with slight radial clearance inside the sleeve 133 and is retained axially in one direction by the rod 140 in contact with the frustoconical bearing 39, and in the other direction by the end.

  free from socket 133 in contact with flange 186.

  The rotation stop is performed using a

  tab 82 engaged between the radial strands of the rod.

  As a variant, shown in dotted lines in FIG. 13, the plug may not penetrate inside the

socket 133.

  The flange 186 is then extended radially to present, at its outer periphery, a fractional annular rim of axial orientation 190 having a fractional annular bead which is received naturally by clipping in the natural groove 192,

  externally presented by the sleeve 133.

  The plug is thus mounted without radial play by clipping on the docking part, outside of the sleeve 133 thereof, and prevents the tabs 141 of the

rush 140 to escape.

  In this case, disassembly can be carried out using a screwdriver resting on the docking piece, for action on the axial flange 190 and

unclip it.

  Of course (FIGS. 14 to 17) the plug 80 can be provided with holding means for maintaining its tongue 81 in the arched position during the tests on the vehicle. The tongues are thus axially compact, which is favorable for the measurements and the

clutch mounting.

  In Figures 14 and 16, the holding means

  consist of two legs 200 located radially above

  above the tongue 81 projecting axially with respect to the rear face of the plug 80 These tabs 200 are provided with hooks 201 turned towards each other perpendicular to the tabs 200 The width between the tabs 200 is slightly greater than the width of tongue 81, while the distance between the hooks

  201 is less than the width of the tongue 81.

  By raising the tongue 300, the hooks 201 are moved aside and a snap-fastening is thus carried out, the tongue 81 being held in the high position, after crossing the hooks 201, by the said hooks 201 forming a shoulder for the latter and maintaining the said

tongue in raised position.

  To disassemble the plug, simply pull the tab 81 to cause unclipping allowing it to return to the axial position. As a variant, the holding means are of the press button type and comprise a stud 300 integral with the rear face of the plug 80, extending in axial projection, and a buttonhole 301 made centrally in the tongue 81 By raising the tongue 81 , a stapling is carried out, the buttonhole 301 being hooked on the stud 300 with a free end thickened for this purpose. By pulling on the tongue 81, a

  unclipping it and returning to the axial position.

  Note that the arched position of the tongue

  generally corresponds to a vertical position.

  Finally, the plug is not necessarily provided with a groove, it may only have a shoulder for jamming the rod between the latter and the bearing.

  frustoconical of the socket of the docking part.

Claims (18)

  1) Docking assembly, of the type comprising, for the traction action of a clutch release bearing (10) on the diaphragm (20) of a clutch, on the one hand, a docking part (30,130) having a collar (31) suitable for pressing on the diaphragm (20) on the side of the latter opposite the clutch release bearing (10), and a sleeve (33,133), suitable for passing through the diaphragm (20), at the favor of its central opening, and, on the other hand, extending annularly inside said sleeve (33,133) of said docking part (30,130) a coupling rod (40,140), which, elastically deformable radially, is suitable for coupling the declutching stopper (10) by simple snap-fastening of the latter, said coupling ring (40,140) comprising, for its retention relative to the docking part (30,130), at least one projecting tab (41) opened by a slot (43), characterized in that a removable and deformable plug (80,180) is mounted on the pi species of docking (30,130) and in that said coupling rod (40, 140) is retained by said plug (80,180) shaped for this purpose and the part docking (30,130).   2) docking assembly according to claim 1,   characterized in that the plug (80,180) is split.   3) docking assembly according to claim 1 or 2, characterized in that the plug (80,180) is provided, at its dorsal face, with gripping means   (81) for its extraction from the docking part (30).   4) docking assembly according to claim 3, characterized in that said gripping means (81) consist of a tongue (81), of axial orientation,   located in the vicinity of the slot (90) of the plug (80).   ) Docking assembly according to claim 4, characterized in that the free end of this tongue is provided with a protuberance (84) allowing   the operator to grasp the tab (81).   6) Docking assembly according to claim 4 or 5, characterized in that, for maintaining said tongue (81) in the arched position, the plug (80) carries in axial projection two tabs (200) with hooks (201), said tongue (81) being able to penetrate between the two legs (200) to come to bear on said hooks (201).   7) docking assembly according to claim 4 or 5, characterized in that, for maintaining said tongue (81) in the arched position, the plug (80) carries in axial projection a stud (300) adapted to cooperate with   a buttonhole (301) made in the tongue (81).   8) Docking assembly according to any one   of claims 1 to 7, characterized in that the   removable plug is retractable (180) and is mounted on the docking piece (130) outside the socket (133) thereof.   9) Docking assembly according to claim 8, characterized in that said plug (180) comprises a fractional annular rim, of axial orientation (190), having a fractional annular bead which is received by clipping in a groove (192) , that presents externally the sleeve (133).   10) Docking assembly according to any one   of claims 1 to 7, characterized in that the   removable plug is retractable (80,180) and is mounted on the docking part (30,130) inside the socket (33,133) thereof.   11) Docking assembly according to claim, characterized in that said plug (80,180) is mounted in radial clearance inside the sleeve (33,133) of the docking part (30,130).   12) docking assembly according to claim 10 or 11, characterized in that the plug (80,180) is of annular shape and comprises a main part (83) in the shape of a ring.   13) Docking assembly according to claim 12, characterized in that the front face of the annular ring (83) of the plug (80,180) has a penetrating shape (93). 14) Docking assembly according to claim 13, characterized in that the ring (83) has a groove (85,185) for receiving the coupling rod (40,140).   15) Docking assembly according to claim 14, characterized in that said groove (85) is delimited by an annular projection (86) in the form of a wedge and suitable for cooperating in a complementary manner with internal bearing surfaces (39,39 a) of the sleeve (33) of the part docking (30).   16) Docking assembly according to claim 14, characterized in that the groove (85,185) is interrupted by a tab (82) projecting radially and adapted to cooperate with radial strands (42,142) delimiting the slot (43) associated with the open paw (41,141) of the rod (40,140).   17) Docking assembly according to claim 16, characterized in that the groove (85) is interrupted by a projection (89) in the form of a lunula located at vicinity of the slot (90).   18) Docking assembly according to any one   of the preceding claims, characterized in that the   slot (90) of the plug (80,180) is flared towards   the front face of the plug (80,180).   19) Docking assembly according to claim 18, characterized in that the flare is V-shaped, each edge having a straight portion extending from the dorsal face of the ring (83) to a chamfered portion (91) flaring the slot (90) towards the front face of the ring (83).   ) Docking assembly according to claim 18 or 19, characterized in that the plug (80,180) is   of reduced thickness at its slot (90).   21) docking assembly according to claim, characterized in that the plug (80,180) is provided with a chamfer (92) reducing the thickness of one of the   edges (95) delimiting its slot (90).