Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
  • F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
  • F16D23/12—Mechanical clutch-actuating mechanisms arranged outside the clutch as such
  • F16D23/14—Clutch-actuating sleeves or bearings; Actuating members directly connected to clutch-actuating sleeves or bearings

Definitions

• the present invention generally relates to the clutch release bearings, that is to say the members intended to act on the clutch release device, in particular for a motor vehicle.
• such a clutch release bearing comprises, on the one hand, an operating element, which is intended to be subjected to a control member, in practice a clutch release fork, and on the other hand a driving element, which is intended, under the action of the operating element, to act on the declutching device of the clutch concerned, and which is free to rotate relative to the operating element while being axially linked to it.
• the attack element has, in practice, radially, with respect to the operating element, an omnidirectional latitude of movement, elastic means to axial action urging this element of attack in the direction of an annular flange which transversely presents for this purpose the operating element.
• the attacking element bears on the annular flange of the operating element, on a first side thereof. On the other side of this annular flange acts the control member.
• This annular flange frequently belongs to a part made of synthetic material. In this case, to avoid deterioration by the control member, it is most often doubled on the surface by a support plate pro ⁇ in contact with the latter.
• the synthetic part to which the annular flange of the operating element belongs also also, most often, substantially axial bosses, of which said annular flange is integral and which are pro ⁇ circumferential support of the clutch release bearing vis-à-vis the control member, and therefore to a rotation lock on the latter of this clutch release bearing.
• the object of the present invention is generally, in the case of a declutching stop using a support plate, to take advantage of the presence of this support plate for a simple embodiment and economical of staples close to allowing the labeling of such a clutch release bearing on the control member which is associated with it.
• the present invention relates to a clutch release bearing of the kind comprising an operating element, intended to be subjected to a control member, in practice a clutch release fork, and an attack element that intended, under the action of the operating element, to act on the disengaging device of a clutch, said operating element comprising transversely, for action of the control member, a doubled annular flange on the surface by a clean support plate in contact with said control member, in combination with staples elastically deformable lateral wings suitable for elastic snap-fastening of the declutching stop on said control member, and characterized in that each of said staples constitutes an independent part, in the general shape of U.
• the middle part of the U-shaped piece which constitutes a staple can be inserted between the support plate and the transverse flange of the operating element, under a radial tab of said support plate.
• the middle part of the U-shaped piece formed by a staple extends from the side of the annular flange of the operating element axially turned towards the attack element, the wings of the said U-shaped piece passing axially on the one hand said annular flange and on the other hand the support plate.
• the maneuvering element comprising, for each clip, two substantially axial bosses suitable for the circumferential maintenance of the clutch release bearing with respect to the control organ, the wings d 'a staple according to the invention extend in practice, axially, parallel to said bosses, and in practice in contact with them, so that they advantageously provide protection of the corresponding faces of these bosses with respect of the organ of ordered.
• the wings of such a clip each further have, along their edge, an angled return, which extends above the corresponding axial boss, so that 'They also provide protection for the corresponding faces of these bossa ⁇ ges with respect to the control member.
• a staple according to the invention can provide a triple function, of snap-fitting elasti ⁇ that of the declutching stopper vis-à-vis the control member which is associated therewith, of protection, vis-à-vis the control member, on a first face of each of the bosses that this declutching stopper has for its setting in rotation thereon, and of protection, also with respect to the control member, of a second face of each of said bosses, distinct from the previous one.
• FIG. 1 is a view in axial section of a stop of clutch according to the invention, along line II of Figure 2;
• Figure 2 is a side elevational view of this clutch release bearing, along the arrow II of Figure 1;
• Figure 3 is a partial plan view, along arrow III of Figure 2;
• Figure 4 is a partial sectional view along the line IV-IV of Figure 2;
• Figure 5 is, on a larger scale, a perspective view of one of the staples implemented in the clutch release bearing according to the invention;
• Figure 6 is, on a different scale, a partial view, in exploded perspective, of this clutch release bearing, illustrating a possible mounting method thereof;
• Figure 7 is a view similar to that of Figure 5, for a -variant embodiment of the clip concerned;
• Figures 8 to 10 are, with local cuttings, views similar to that of Figure 3 and each relate respectively to an alternative embodiment.
• this self-centering stop comprises an operating element 10, which is made of synthetic material, and which thus comprises in one piece, on the one hand a sleeve 11, suitable for its engagement on the trumpet usually surrounding the output shaft of a gearbox, and secondly, transversely, an annular flange 12, which is intended to be subjected to the action of a control member.
• This control member is usually a clutch release fork.
• a clutch release fork is not part of the present invention, and therefore will not be described in detail here.
• the sleeve 11 of the operating element 10 has, on its external surface, projecting, in diametrically opposite positions, two pairs of axial bosses 14 each suitable for framing such a finger 13.
• Such axial bosses 14 extend from the annular flange 12, and they are therefore integral with it.
• this annular flange 12 is lined on the surface by a support plate 15 annularly sur- rant the sleeve 11; in the embodiment shown, this support plate 15 is truncated, its outer contour comprising two parallel rectilinear edges 16.
• the support plate 15 For its axial engagement on the bosses 14 of the sleeve 11, the support plate 15 has, in diametrically opposite positions, two pairs of notches 17 which form two legs between them, in di ⁇ rection from one another, radial 18.
• the annular flange 12 comprises, at the edge of the sleeve 11, an annular housing 22, the role of which will appear below; similarly, axially set back from its opposite front surface, it has an annular housing 22 *.
• a driving element 24 intended, in the usual manner, to act on the declutching device of a clutch, under the action of the operating element 10.
• this driving element 24 is constituted by a ball bearing, the outer ring 25 of which is axially in contact with the annular flange 12 of the operating element 10 , on the side thereof opposite to the support plate 15, and the inner ring 26 of which projects axially forwardly, for action on the clutch release device of the clutch concerned.
• a cover 27 axially splits the driving element 24 to the operating element 10.
• this cover 27 comprises a front wall 28, which in itself forms elastic means with axial action, constituting for example, as shown, a washer. corrugated of the "ONDUFLEX" type, and which, bearing on the front edge of the outer ring 25 of the ball bearing constituting the attack element 24, axially applies the latter against the annular flange 12 of the operating element 10, and, in a single piece with this front wall 28, a plurality of axial tabs 29 which each have, near their end, an opening 30 through which they are engaged on projections in the form of a hook 31 integral with the maneuvering element 10.
• these hook-shaped projections 31 are established from place to place, at the periphery of the annular flange 12 of the operating element 10, in one piece with the latter.
• the hook-shaped projections 31 could be formed at the periphery of the support plate 15.
• annular flange 12 of the operating element 10 assumes, in different ways, a double function, of retaining the cover 27, and of rete ⁇ naked the support plate 15 .
• WIPO 27 is advantageously reduced, which corresponds to a saving of metal.
• annular protective cover 32 is engaged on the driving element 24, between its internal ring 26 and the front wall 28 of the cover 27.
• staples 33 are provided, for an elastic snap-fastening of the declutching stop concerned on the control member to which it is associated, and, more precisely, on the fingers 13 thereof.
• Such a clip 33 is provided for each of these fingers 13. According to the invention, it is an independent part, in the general shape of a U, shown in isolation in FIG. 5.
• the clip 33 therefore comprises, in one piece, on the one hand a median part 34, and on the other hand two elastically deformable wings 35 whose ends, shaped for this purpose in a dihedral in direction from one another, together form a neck of reduced width 36; such a clip 33 is for example made of metal.
• each clip 33 is inserted, by its median part 34, between the support plate 15 and the annular flange 12 of the operating element 10, under the radial lug correspon ⁇ dante 18 of this support plate 15, in favor of the annular housing 22 which has axially recessed said annular flange 12.
• the elastically deformable wings 35 of a clip 33 extend axially, - parallel to the corresponding axial bosses 14, in contact with these bosses, between them, by axially passing through the support plate 15 to the fa ⁇ notches 17 thereof.
• the clips 33 can be placed on the operating element 10 before engagement on the latter of the support plate 15.
• each clip 33 protects the finger 13 corresponding to the control member the axial bosses 14 of the operating element 10, since they double in surface the faces of these axial bosses on which such a finger would normally be able to act by its edge.
• a similar protection is provided to those of the faces of the axial bosses 14 which are orthogonal to the previous ones and on les ⁇ which can normally act the control member by the edge of 1 ' central opening by which it is engaged on the operating element 10.
• the wings 35 of a clip 33 each have along their edge a return square 38.
• its returns 38 which are in opposite directions relative to one another, extend over these bosses 14, and therefore protect them.
• At least one of the wings 35 of the U-shaped part that forms a clip 33 is, at its extremi- free tee, folded transversely at a square 40 in contact with the end edge 41 of the corresponding axial boss 14 of the operating element 10. Its retention is thereby strengthened.
• complementary engagement means are provided for the same purpose between on the one hand at least one of its wings 35, and, in practice, each of these, and, on the other hand, the corresponding axial boss 14 of the operating element 10.
• these complementary engagement means comprise, for a wing 35 of the clip 33, a projection 43, in the median zone of such a wing, and, for the axial boss 14 corresponding to the operating element 10, a housing 44, provided for this purpose recessed in the sidewall 45 corresponding to such a boss and suitable for the elastic labeling of the projection 43.
• such a projection 43 can very simply result from a local deformation of the wing 35 concerned.
• the middle part of the U-shaped part formed by a clip 33 extends from the side of the annular flange 12 of the operating element 10 axially turned towards the element attack 24, that is to say on the side of this flange opposite to that on which the axial bosses 14 are located, the wings 35 of such a staple axially traversing, on the one hand said annular flange 12, with favored by passages 46 provided for this purpose therein, at the edge of the sleeve 11, and other
• each of the wings 35 of each clip 33 has transversely a shoulder 48 by which it bears on the support plate 15, on the face of the latter facing towards the axial bosses 14, that is to say on that of the faces of this support plate opposite to that by which ' it is in contact with the annular flange 12 of the operating element 10.
• such a transverse shoulder 48 results from an angled fold of the wing 35 considered, this angled fold extending in the direction opposite to the other wing 35 of the clip concerned.
• passages 46 of the annular flange 12 of the operating element 10 and at the notches 17 ′ of the support plate 15 a circumferential development sufficient to allow the passage of the shoulders 48 of a clip 33 after deflection towards one another wings 35 of such a clip.
• such a clip which, by its median part, bears on the annular flange 12 on a first side thereof, maintains the support plate 15 between this annular flange 12, of the on the other side of it. It therefore ensures by itself the axial maintenance of this support plate 15, or, in coopera ⁇ tion with the other clip, participates at least in this maintenance.
• the present invention is not limited to the embodiments described and shown, but encompasses any variant of execution, in particular as regards the coupling of the cover 27 to the operating element 10, which can be insured in a different way than that more particularly described here.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Mechanical Operated Clutches (AREA)
• Support Of The Bearing (AREA)
• Sliding-Contact Bearings (AREA)
• Motor Or Generator Frames (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9227589

Family Applications (1)

Country Status (6)

Cited By (6)

Families Citing this family (2)

Citations (4)

• 1979
  • 1979-07-06 FR FR7917553A patent/FR2461157A1/fr active Granted
• 1980
  • 1980-07-03 WO PCT/FR1980/000108 patent/WO1981000142A1/fr active IP Right Grant
  • 1980-07-03 DE DE8080901175T patent/DE3067829D1/de not_active Expired
  • 1980-07-04 IT IT12590/80A patent/IT1133453B/it active
  • 1980-07-04 ES ES493124A patent/ES493124A0/es active Granted
• 1981
  • 1981-01-26 EP EP80901175A patent/EP0031338B1/fr not_active Expired

Patent Citations (4)

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