FR2505427A1 - CLUTCH STOP, PARTICULARLY FOR A VEHICLE CLUTCH - Google Patents

Abstract

IN THE CLUTCH STOPPER ACCORDING TO THE INVENTION, ONE OF THE SURFACES AGAINST THE FIXED BEARING RING 2 AND A STOP RING 10 CARRIES A COATING 12 OF FLAKY FIBERS IN WHICH THE PROJECTED PARTS ENGAGE 11, 14 OR THE LIKE PROVIDED ON THE OTHER OF THESE SURFACES.

Description

CLUTCH STOP, PARTICULARLY FOR A VEHICLE CLUTCH

  The present invention relates to a stop for em-

  clutch, in particular for a vehicle clutch, comprising

  both a sliding sleeve on which a bearing

  clutch is fixed axially, by means of a ring

  rêt, the clutch bearing being arranged so that its fixed ring can move radially on a thrust plate or a flange of the sliding sleeve and being fixed in the centered position by means provided on a part of the clutch bearing and cooperating with a

  part of the sliding sleeve or the like.

  There is already a clutch bearing in which,

  for centering on the clutch axis, the bearing

  clutch can be released in a limited way by a stop, and

  is movable in the radial direction relative to the element

  ment of the clutch operating device, a plastically deformable material being provided for the stop, in which a projection disposed on the fixed bearing ring engages in engagement of the clutch and

  keeps the clutch bearing in the centered position (DE-

OS 22 21 231).

  This known device has the drawback of

  lay special means for axial positioning

  clutch bearing and that, with each clutch operation

  ge, the bearing must move in the axial direction so that the projection disposed on the fixed bearing ring is extracted from the plastically deformable material The object of the invention is therefore to propose a clutch bearing of the type mentioned at the start, in which the

  clutch bearing must not be moved in the direc-

  axial, which has relatively few parts which are inexpensive to manufacture and easy to assemble, and which is

  compact and takes up very little space.

  According to the invention, this result is obtained by the fact that one of the facing surfaces of the fixed bearing ring and of the stop ring carries a coating of flaky fibers, in which parts are engaged.

  protrusion or the like from the other of these surfaces.

  According to an advantageous characteristic of the in-

  vention, the stop ring also carries a coating of flaky fibers whose fibers engage in the coating of flaky fibers disposed on the

fixed bearing ring.

  Other features and advantages of the

  vention will appear during the description which goes

  follow several embodiments and with reference to the accompanying drawings in which: Figure 1 is a section of a clutch bearing

  according to the invention, with a coating of flake fibers

  neuses arranged on a rim of the fixed bearing ring, and in which engage parts projecting axially

a stop ring.

  Figure 2 shows another example of a

  in which the stop ring engages in the

  coating of flaky fibers with a sail-

circumferential lie,

  Figure 3 is a side view of the rear ring.

  Fig 2, and Figure 4 shows a clutch stop according to the invention, in which the stop ring and the fixed bearing ring are provided with a coating

of flaky fibers.

  The clutch bearing shown in Figure 1

  comprises a clutch bearing 1, constituted by a base

  fixed outer ring 2 with a rim 3 directed radially inwards, a rotating inner ring 4 with a convexly rounded support surface 5 for the diaphragm spring of the clutch (not shown) and balls 7 arranged in a cage 6 between the rings of

  bearing 2, 4 The clutch bearing 1 is supported by the

  edge 3, radially movable, on a plate

  thrust 8 of the sliding sleeve 9, and it is fixed in po-

  sition centered by a stop ring 10, which engages with a coating 12 of flaky fibers by axially directed projections II The stop ring 10 is made in the shape of an L and is arranged with

  its section 13 in the form of a ring on the sliding sleeve 9.

  The clutch bearing shown in FIGS. 2 and 3 simply differs from the embodiment shown in FIG. 1 in that a circular projecting part 14 is provided on the stop ring, folded back towards the covering 16 of flaky fibers, and preferably comprising notches 17 directed radially, distributed at the circumference The fibers

  flaking machines which engage in the 17 inter-

  say the rotation of the fixed outer ring 2.

  In the clutch bearing shown in Figure 4, the stop ring also has on its side opposite to the clutch, a coating 19 of flaky fibers cooperating with the coating 20 of flaky fibers disposed on the fixed bearing ring 2 With this arrangement, the flaky fibers of the two layers 19, 20 catch on one another, and thus fix the fixed bearing ring 2 in the centered position. The outer surface 21 of the stop ring 18 serves as a stop for end, on which the surface

  inner 22 of the fixed bearing ring 2 comes in ap-

then under the effect of strong shocks.

  This arrangement of the stop ring 10, 15, 18 on the outer surface of the sliding sleeve 9 or similar, and which by projecting parts 11, 14 or the like produced in a corresponding manner engages with a coating 12, 16, 20 of flaky fibers fixed on the fixed bearing ring 2 makes it possible to obtain that

  the clutch bearing can move in either direction

  tion radially and center exactly without great constraint force on the ends of the fingers of the clutch diaphragm spring (not shown), the relative movement of the clutch bearing 1 relative to the sliding sleeve 9 being damped in each position by the fibers flaky machines 12, 16, 20 bending elastically

  under the effect of the radial displacement of the bearing 1.

  Modifications to individual parts of the clutch release bearing are possible in the spirit and

  scope of the invention Thus, for example, the rear ring

  rêt 15 can have one or more projecting parts

  14 circulars, arranged concentrically, with for example-

ple a wedge-shaped section.

Claims (5)

  1 Clutch bearing, especially for a clutch   vehicle clutch, comprising a sliding sleeve on which a clutch bearing is fixed axially, by means of a stop ring, the clutch bearing being arranged so that its fixed ring can move radially on a plate push or a   sliding sleeve flange and being fixed in posi-   tion centered by means provided on a part of the clutch bearing and cooperating with a part of the sliding sleeve or the like, stopper characterized in that one of the facing surfaces of the fixed bearing ring (2) and of the stop ring (10, 15, 18) carries a coating (12, 16, 20) of flaky fibers in which engage protruding parts (11, 14) or   similar to the other of these surfaces.   2 clutch bearing according to claim 1, characterized in that the projecting parts (il, 14) are provided in a direction essentially   axial, on a wing directed radially outwards   laughter of a stop ring (10, 15) of shaped section   of L arranged on the outer surface of the sleeve smoothing (9).   3 clutch bearing according to claim 1 or 2, characterized in that the projecting parts   (14) are arranged to rotate on one or more rings concentric keys.   4 clutch bearing according to claim 3, characterized in that the rotating projecting parts (14) are provided with several notches (17) directed   radially, distributed around the periphery.   Clutch bearing according to any one   claims 1 to 4, characterized in that the   protruding parts (il, 14) have a cross section wedge-shaped.   6 clutch bearing according to claim 1,   characterized in that the stop ring (18) carries a   garment (19) of flaky fibers, facing the coating (20) of flaky fibers on the fixed bearing ring (2), the fibers of one layer (19) being arranged to engage between the fibers of the other layer (20).