FR2558228A1 - STOP CLUTCH - Google Patents

Abstract

A RELEASE STOP INCLUDES A FIRST ELEMENT 13 TO WHICH A RELEASE FORCE IS APPLIED BY A FORK 31, A SECOND ELEMENT 14 TO APPLY THE RELEASE FORCE TO A CLUTCH DIAPHRAGM 15 AND BALLS 16 THROUGH WHICH THE FORK DISENGAGE IS TRANSMITTED FROM THE FIRST ELEMENT TO THE SECOND ELEMENT. THE FIRST ELEMENT 13 INCLUDES AN ECCENTRIC MASSELOTT 23 WHICH PROMOTES THE FIRST ARM TO OCCUPY A DESIRED ANGULAR POSITION ON A GUIDE 10 DURING ASSEMBLY TO ALIGN EARS 38 ON THE FIRST ELEMENT WITH THE FORK. THE INVENTION IS PARTICULARLY APPLICABLE TO MOTOR VEHICLE TRANSMISSIONS AND FACILITIES ASSEMBLY BY AUTOMATICALLY ALIGNING THE FIRST ELEMENT WITH THE FORK.

Description

The present invention relates to an abutment of

  clutch and is particularly but not exclusively

  surrounded by a stop for disengaging a transmission of

motor hicle.

  The release stops of certain vehicles are

  driven by a release fork which is

  by a cable or the actuated cylinder of an action circuit-

  hydraulics of the clutch. One of the problems that

  while assembling the transmission elements con-

  identify the alignment of the declutching fork with its

  points of support on the release stop.

  sometimes very limited, it can be difficult to

  hold the stop in a desired angular position

  with the fork and purpose of the present invention.

  is to provide a release stop which simplifies this

  semblage. According to the invention, there is provided a clutch release bearing comprising a first element to which a disengaging force can be applied by a fork or other means, a second element for applying said disengaging force to

  a clutch element, and rolling means through the

  which the release force is transmitted from the first

  element to the second element, characterized in that the

  first element comprises a solicitation means for ame-

  the first element to a predetermined angular position

  mined on a guide during assembly to align said

  first item with the fork or other means.

  The solicitation means preferably comprises

  a weight arranged eccentrically on the first element.

  Using an eccentric weight, the first element

  gravity around the guide so as to position the support means of the first element in a desired position relative to the fork or other means which in use

acts on these means of support.

  The release stops according to the invention will now

  to be described by way of example with reference to the accompanying drawings, in which: - Fig.1 is an end view of a clutch release bearing according to the invention;

  - Fig.2 is a section of the stop of disengagement

  Fig. 1 along the line II-II of Fig.1 carried by a guide sleeve engaged with a clutch diaphragm; FIG. 3 is an end view of another type of

  disengagement stopper according to the invention cooperating with a furnace

  clutch release, and - Fig.4 to 6 are sections similar to the

  Fig.2 other types of clutch releases according to the invention

  tion. Referring first to Figs 1 and 2, a tubular guide 10 is worn in a known manner by a boot

  speed (not shown) of a vehicle transmission

  The guide is coaxial to a leading input shaft (also

  not shown) of the gearbox.

  carries a release stop 12 comprising a first element

  13 which is adjusted with an operating clearance on the guide 10, a second element 14 associated with a diaphragm of

  clutch 15 and rolling balls 16 between the first and second

  first and second elements. In detail, the first element comprises a sleeve 17 and a bearing ring

  coaxial outer shell 18, the sleeve having a terminating flange

  the circular 19 formed with an annular rim 20.La

  outer race 18 is formed with a

  long radial 22 which adapts a 23.

  The male has a stem 24 which crosses the

  22 and a leaf spring 25.The rod 24 is mated

  in 26 to secure the weight and the spring to the-

  to the outer race.The flange 20 of the flange 19 is cut to fit a notch 27 in

  which the leaf spring 25 is housed with a functional clearance

  The leaf spring rests on the flange 19 and

  normally attracts the outer bearing ring

  20.The elastic connection allows a certain amount of

  degree of axial misalignment between the sleeve 17 and the base

  18. The second member provides an inner race 28 which is axially secured to a ball carrier 29. The inner race 28 is formed with a peripheral groove 30 in which a bead 32 is formed.

  on the ball holder is engaged nar engagement.

  Ball holder 29 is formed with slots 33 spaced apart

  circumferentially to delimit fingers 34 which

  radial fingers 35 of the diaphragm 15. The fingers 34 are turned outwardly so as to receive a ring 36, as shown. A Belleville spring 37 is compressed between the diaphragm 15 and the inner race 28 and pushes the ring and the diaphragm 15 against the ring 36. The 16 bearing balls are housed between the inner and outer bearing rings,

  which can be formed from stamped sheet metal.The roll ring

  the outer portion is formed with support lugs 38 for a release fork, whose end portions are indicated at 39 in Fig.1.La declutching fork is mounted adjacent to the release stop for a bet

  in action by the normal slave cylinder of an action circuit-

hydraulics of the clutch.

  During the assembly of the clutch housing the outée is integral with the mechanism, the element 13 will turn under the action of the weight 23 and will be oriented

  correctly it is at the area that the ears 38 are positioned-

  born so that when the weight 23 is in

  its lowest position, they line up with the ex-

  tremities 39 of the range when the range is

  The setting up of the fork against the ears

  38 is then a simple operation not requiring

  nipulation of the first element to perform the alignment.

  The fork applies to the outer race 18 a clutching force in the direction R which slides the sleeve 17 along the guide 10, the force being transmitted to the diaphragm 4 through the balls 16, the ring inner bearing 28, of the ball holder 29

  and the ring 36 to release the clutch (not shown).

  3 represents a clutch release bearing in which the lugs 38 are positioned on the outer race 18 so as to engage with an inclined fork 31. FIG. 3 shows that the position of the weight 23 can be chosen in a manner appropriate during manufacture to meet any orientation

desired from the fork.

  In Fig.4 to 6, the first elements 13

  represented are the same as that of Fig. 1 and do not

  will not be described again. However, Figs.

  feel variants of second elements 14 applicable to

  clutches of the diaphragm type.

  In FIG. 4, the second element comprises an inner race 28 which carries a ring in

  stamped sheet 40 in a peripheral groove 42. The ring: 40

  feels an annular groove 43 which receives a rod of support

  wire 36. A Belleville spring 44 located in another location.

  45 of the inner race 28 presses the diaphragm 15 and the ring 40 against the bearing ring 36.The spring 44 has a series of tongues

  46 which are placed in slots 35 of the diaphragm.

  In Fig.5, the inner race

  28 is fixed axially, with a series of fingers 50 turn-

  born out of the way through slits 35 of the dia-

  21 and the fingers 50 are held against the ring 36 by a Belleville spring 52 having a series of tongues.

  53 which are placed in respective slots 54 delimits

between the fingers 50.

  In Fig.6, the inner race 28 carries a stamped sheet metal part 60 which delimits a

  annular groove 62 and having a cylindrical body 63.

  The body 63 is provided with one or more tongues 64

  stamped inwards and which penetrate by interlocking

  in respective recesses 65 formed on the inner race. A Belleville spring 66 similar to

  that of Fig.4 is provided in this embodiment.

Claims (9)

- CLAIMS -   1 - Release stop comprising a first element   (13) to which a clutch release force (31) or other means is to be applied, a second member (14) for applying said disengaging force to a clutch member, and rolling means (16). through which the clutching force is transmitted from the first member 13 to the second member (14), characterized in that   that the first element (13) comprises a means of soliciting   tion (23) to encourage the first element to occupy a   predetermined angular position on a guide (10)   assembly to align said first element   with the fork (31) or other means.   2 - clutch release bearing according to claim 1, characterized in that the biasing means is a mass 23 arranged eccentrically on the first element (13). 3 - clutch release bearing according to claim 2, characterized in that the first element (13) comprises   a sleeve (17) which is capable of sliding axially   on said guide (10) and a rolling race co-   axial axis (18) mounted on the sleeve for the rolling means (16).   4 - Release stop according to claim   3, characterized in that the bearing ring (18) com-   takes means of support for the range (31) or   the means of support being aligned with the furnace   chette (31) or other means by the eccentric   that (23). _ - Release stop according to one of the   2 or 3, characterized in that the roller ring   (18) and the sleeve (17) are normally   together axially by flexible means that allow limited axial misalignment of the ring bearing and sleeve.   6 - clutch release bearing according to claim, characterized in that the flexible means comprise a leaf spring (25) fixed to the bearing ring (18) by the eccentric weight (23).   7 - Release stop according to any one of   Claims 2 to 6, characterized in that the mass   monkfish (23) is carried by a radial extension (22) formed on the ring (18).   8 - Release stopper according to any one   of the preceding claims, characterized in that the   second element (14) comprises a second roller ring   (28) for the rolling means (16) and is   axially connected to a clutch spring (15) of the dia-   phragms. 9 - clutch release bearing according to claim 8, characterized in that the second element (14) comprises a portion forming the second bearing ring (28) and another part axially fixed relative thereto, the other part s extending through the diaphragm (15)   in order to place the diaphragm between a surface on the   part of the second element, intended to apply force   disengagement to one side of the diaphragm, and elastic means   ticks which bear on the other side of the diaphragm and push the diaphragm and said surface towards one another the other.   - Release stop according to Claim 9,   characterized in that the elastic means are constituted   killed by a Belleville spring (37) having positioning means which position it relative to   at the second element (14) or at the diaphragm (15).   11 - Release stop according to one of the claims   9 or 10, characterized in that the other part of the second element (14) is a pressed sheet metal part (40) fixed axially with respect to said first part the second element.   12 - Release stopper according to any one   of the preceding claims, characterized in that   the second element (14) applies the disengaging force to the clutch element via a rod   (36) in contact with the clutch element.   13 - Release stop according to Claim 12   and any one of claims 9 to 11 in the   which other part of the second element (14) receives the   ring (36) engaged with the clutch element ge.