DE2240715A1 - RELEASE BEARING OR CLUTCH PRESSURE BEARING - Google Patents

Description

Release bearing or decoupling pressure bearing
Priority: France of August 20, 1971

A release bearing (uncoupling pressure bearing) with an actuating element which was intended to be exposed to a movement or displacement control device, with an engagement element which is intended to do so, has already been proposed
was to act under the action of the actuation element on the release device of a clutch and, interposed between these actuation and engagement elements, a connection of the active self-centering in translation and in
a plane perpendicular to its axis with freedom of movement in any direction (une latitude omnidirectionnelle de
ch.etnine.ment), which was controlled by a frictional connection or a pressing or clamping under friction, which axially under the
Influence of elastic buoyancy compensators worked.

The result and advantage of this arrangement was to make it the offensive element to make it possible to be in a favorable operating position coaxial with the coupling or to be in this at any moment reset, even if during the dismantling of the release bearing

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this was not exactly coaxial with the coupling.

It has also been suggested that the frictional engagement "resp. this jamming under friction that occurs with this release bearing, brought about by direct contact between the two parts was, d. H. without the interposition of any friction (washer) disc.

Under the further development of this arrangement, according to the invention, a release bearing of the type with a Actuating element are proposed, which is intended to be exposed to a movement or displacement control device to be treated with an attack designed to under the Vrikung of the actuating element on the release device to act on a clutch, and, interposed, between these actuating and engagement elements, with a translationally active, self-centering connection, which has a degree of freedom of movement in each direction in a plane perpendicular to its axis, which is caused by a frictional connection is regulated, which is axially under the influence (of) elastic buoyancy devices works. The invention is characterized in that the frictional engagement or the clamping or pressing under Friction is brought about by direct contact of metal on synthetic material.

From this it follows that if the components are very economical, the following interesting friction characteristics are achieved permit:

while in the past it was necessary to carry out numerous experiments, in order to find satisfactory material pairings the use of a synthetic material to solve this problem proved to be immediately satisfactory.

In particular, it is an embodiment according to which the actuating device consists of a disk which has a cap

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carries, which extends axially in the direction of the coupling, while the engagement element consists in one of the raceways of a YJälzlagers, the other raceway through this cap is covered, with the interposition of the elastic taring devices, wherein this disc is advantageously made of plastic and the second of these raceways in their direct Contact to bring about the frictional connection or the pressure is under friction of metal on synthetic material to be reached.

Preferably the cap itself is made of synthetic material and the natural elasticity of such a material can then be advantageous for producing elastic, frictional engagement associated buoyancy compensator that carries the release bearing, be exploited. - ■

In particular, a measure according to the invention is here Release bearings of the type are proposed with an actuator designed to be a motion control device to be exposed; an attack element that to it is intended to act on the release device of a clutch under the action of the actuating element; and, interposed between these actuation and attack elements, a self-centering compound active in translation that has a freedom or in a plane perpendicular to its axis has a degree of priity in each direction of movement that is reduced by frictional engagement or pressing or clamping Axial friction dependent on elastic taring devices works. The release bearing is characterized in that the actuating element consists of an axially extending Cap-bearing disc consists while the attack element consists of one of the raceways of a roller bearing, the other raceway through this cap with the interposition of the elastic Buoyancy compensator is covered, these

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elastic buoyancy devices are formed by a appropriately shaped extension of the cap.

Each of a preferred embodiment of the invention is this Extension a setback directed against the whale camp; Such a recess can optionally be achieved by means of radial slides be fractionated.

In any case, however, this arrangement according to the invention leads to a particularly economical design of the release bearing.

Exemplary embodiments of the invention will now be based on the accompanying schematic drawings are explained in more detail, in which

Pig. 1 a representation irr. Axial section of a coupling equipped with a decoupling pressure bearing according to the invention, the latter in section along the line II in Pig. 2 is shown; is;

Pig. Fig. 2 is a view of this clutch thrust bearing alone, according to arrow II in

Pig. 1;

■ - The Pig. 3 and 4 show in a larger representation - it is the decoupling pressure bearing alone - views analogous to those of FIGS. 1 and 2 for an embodiment variant;

Fig. 5 is a partial top view of this variant, with parts omitted, along the line VV in Fig. 4;

6 and 7, 8 and 9 and 10 and 11 are representations analogous to FIGS. 3 and 4 and relate to other design variants.

Fig. 1 shows, for example, the application of a decoupling - pressure bearing according to the invention on a clutch of the membrane

^baeart - 309809/0255 _ ₅ _

This clutch comprises a flywheel 10, -which firmly tr; it
a drive \\ ^r elle 11 is connected and an axially fixed
Reaction disk ". A pressure disk 12, which is axially movable with respect to the reaction disk 10 'and is designed to be non-removable, acts with the reaction disk 10 sum
Bracing a friction disk 13 coupled to a driven shaft 14 together.

The thrust washer 12 is exposed to a hoop 15 which is tiltably mounted on a cover 16 fixed to the reaction disk 10. The peripheral part 19 of the membrane 15 takes on the role of a Belleville tension washer, while the central part carries a series of uncoupling fingers 20 which are connected to a
Decoupling pressure bearing 21 work together.

The entirety of these arrangements is well known and needs therefore not to be described further.

Suffice it to recall that when that
The pressure bearing 21 has no effect on the uncoupling fingers 20, the membrane 15 for clamping or pressing the disk 13.
ensures, while when the thrust bearing 21 presses on the uncoupling fingers 20 in the direction of the reaction disk 10, the membrane 15 allows the disk 13 to relax.

The clutch thrust bearing 21 may be of a type that it longitudinally displaceable along a solid yoke that is essentially coaxial with the coupling, makes, namely under actuation by a shift or release fork, not shown be. This is the case with those shown in Figs. 1-9 Embodiments.

The decoupling or release bearing can also be of a
Be the type that is carried directly by the shift fork.

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This is the case with the Pig. 10 and 11 shown Embodiment.

Especially with the one in the Pig. 1 and 2 illustrated embodiment the clutch or release bearing 21 comprises an actuating element 22, which is intended to be connected to the associated release fork.

This actuator consists of a disc 23 which extends perpendicular to the axis of the coupling and the im Example shown in one piece with an axial guide sleeve 24, which is intended to be displayed on the separate, not shown fixed guide to slide.

According to the invention, there is this actuator 22 and in particular its disc 23 made of plastic, for example a plastic sold under the trade name "DELRIIi" is distributed.

Of course, the quality of the plastic is not to be regarded as limiting the invention; much more any material commonly referred to as "plastic material" or "plastic" may be used.

Around the cuff 24 of the actuating element 22 is a ball bearing 25 arranged, a radial play 26 being left in a ring-like manner between this sleeve 24 and this bearing 25.

The inner raceway 2? of this ball bearing 25 is de-in direction: extended coupling and cooperates with the free end of the Kupr.lunp - together finger 20 and thus forms the attack eic :; ·? ent for there? Return storage 21.

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Lie outer raceway 28 of the ball bearing 25 is directly in Zontakt with the disk 23 of the actuating element 22 and is in the direction of the disk by elastic taring devices applied, which in the example under consideration consist of a ¥ ellur.gsseheibe 29 τοη of a type that is under the trade name "OITDÜFLEX" or "BORELLY" is sold.

This corrugated disk or. ^r . Corrugated annular disk 29 is pressed against the outer track 28 of the ball bearing 25 by the transverse recess 30 of a zap 31, which is hooked or imposed at its other end against the circumference of the disk 23 of the actuating element 22 and which extends axially from this disk in the direction of the Coupling extends, with an annular clearance 32 between the zapper and the ball bearing 25 being left.

In particular, this cap 31 has flaps 35 flanged against the disk 23 of the actuation element 22 and between them these tabs shows the disk 23 cutouts 36, the the zap 31 when it is angularly blocked against the actuating element 22 occupies.

A metallic plate 40 is assigned to the actuating element 22 and carries 2 lugs 41 which make it possible to the uncoupling bearing or release bearing 21 with the associated To connect release fork 21, not shown.

Then in the Pig. 1 and. 2 illustrated embodiment ensure the tabs 35, which also ensure that the zap 31 'is flanged against the disk 23 of the actuating element, also for the metallic plate 40 being held against this disk and the latter partially in a position in the disk 23 recessed bearing 45 is driven.

In operation, the disk 23 of the actuating element 22, the cap 31 and the corrugated disk 29 form opposite the ball; bearing 25, and taking into account ring spifles 26 and 32, a self-centering connection that is active in translation: This connection has freedom of movement on all sides in a plane perpendicular to the axis of the coupling, which is achieved by a Frictional engagement is controlled or regulated, this F.eibschluss or this clamping or pressing under friction through the contact is realized from metal on plastic, which with respect to the outer track 28 of the ball bearing 25 against the disk 23 of the actuating element 22 is present and tared elastically by the corrugated washer 29.

This freedom of movement enables the engagement element 27 to be in or to return to a favorable working position at any moment, which is coaxial with the coupling.

The production of the actuating element 22 from synthetic material makes it possible in a very simple manner to obtain an advantageous contact of metal against synthetic material or plastic, which is interesting and useful for this frictional engagement.

If it is also a sliding-type release bearing This version made of synthetic material or plastic facilitates the sliding conditions of the actuating element on the fixed guide, without which lubrication (not shown) would be necessary.

As detailed above, a synthetic material is of the type sold under the trade designation "DEIRIft" becomes, in all respects, satisfactory.

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The one in the Pig. 3-5 shown variant "exists the cap 31 itself made of synthetic material. She has a Annular groove 50 in which the disc 23 of the actuating element 22 engages with its scope.

The metallic component 40 associated with this actuating element also has openings 52 which enable it to be attached to " the actuating element 22 by means of staples 53 which are made from a single piece with this actuating element.

Of course, a number of fastening variants can be adopted, in particular locking latches or locking, Screw or mete.

According to the in the Pig. 6 and 7 illustrated embodiment this fastening is carried out by latching the metallic plate 40 over elastically deformable projections 55 of the Washer 23 of the actuating element 22, these projections for example, have the shape of rods as shown.

For the rest, this embodiment is the elasticity of the self of the synthetic material forming the zap 31 is used to replace the necessary elastic buoyancy devices the previously described corrugated washer 29 to produce.

These elastic buoyancy devices are formed by a suitably shaped extension 5b of the cap 31, 'the acts on the outer track 28 of the roller bearing 25.

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As shown, this extension 5b forms a counter the roller bearing 25 directed return, in a direction opposite to the clutch. Such a jump back 56 can optionally through radial slots (not shown) be fractionated.

According to the embodiment shown in FIGS carries the cap 31 staples 57 which engage in holes 58 of the disc to fix these two components against each other. In addition, the disk 23 directly carries lugs 23A for coupling the bearing to the associated release fork; these approaches 23A are integral with the disk 23.

According to the in the Pig. 10 and 11 illustrated embodiment, where it is the case where the actuating element is none Has guide sleeve, the release bearing or thrust bearing carried directly by the release fork via pivot pins 59 molded together with the disc 23.

It goes without saying that the invention is not restricted to the embodiments described and illustrated rather, any possible embodiment variant and / or combination of its various elements, in particular with one another.

Expectations

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Claims (15)

Expectations 1.) Release or uncoupling bearings of the type with a Actuating element, which is a motion control device is exposed to an attack element designed to under the action of the actuating element on the uncoupling or release device of a clutch to act, and, interposed between the actuation and attack elements, with a translationally active self-centering compound; and with all-round freedom of movement in one plane perpendicular to its axis, which is caused by frictional engagement or Friction pressing is regulated, this effect acting axially depending on the elastic 5arierungseinrichtung, characterized in that this frictional engagement or this Friction pressing or friction clamping brought about by direct contact of metal on synthetic material or plastic is. 2. Release bearing according to claim 1, characterized in that the actuating element consists of a one; axially extending Cap-bearing disc consists, while the attack element consists of one of the tracks of a roller bearing, the other track through this cap with the interposition of the elastic Buoyancy compensator is covered, the disc made of synthetic material or plastic; and the second of these orbits in direct contact with it to induce the B. exercise conclusion it stands. 3. Release bearing according to claim 2, characterized in that the cap consists of synthetic material. - 12 - 30 9809/0 26 5 4. release bearing according to claim 3 »characterized in that that the cap has an annular groove into which the associated disk engages oit its periphery. 5. release bearing according to claim 3 »characterized in that that the cap wears staples that are made in one piece with it were, namely for engagement in holes of the associated disc. 6. Release bearing according to one of claims 1-5 »characterized in that the elastic taring devices a corrugationE: washer on iron. 7. Release bearing according to one of claims 2-4, characterized characterized in that the elastic taring devices consist of a suitably formed extension of the cap. 8. Release bearing according to claim 7, characterized in that this extension is directed against the rolling bearing Return is. 9. Release bearing according to one of claims 7 and 8, characterized characterized in that this extension is fractionated by Eädialschlitze. 10. Ausrückla, ~ he according to any one of claims 2-9, characterized in that ei · · of the disc of synthetic perpetrator !, aa ·: - is associated with a metal-ir-chi plate 3 (which nit.? v.'cni r ~ io: i; i a. approach sur Ihipplur.g means? ^ .er associated verse chisbv.n ^ peinrichtung A ^{r can} be seen. 11. Release bearing according to claim TO, characterized in that the plate c ^e cen the disc is held by the associated K: v ^ pe. 309809/0265 BAD ORIOlNAjL 12. Release bearing according to claim 10, characterized in that that the flat? is fixed with respect to the disc, for example, by any of the following gowns: from one piece fastenings made with the disc; Latches on the elastically deformable projections of this disc, screwing, I rent. 13. Release bearing according to one of claims 2-9, characterized characterized in that, for coupling by means of the associated movement control device, the disc is integral therewith trained approaches. 14. Release bearing according to one of claims 2-3, characterized characterized in that the disc has a portion with an axial guide sleeve or sleeve for sliding on a fixed guide forms. 15. Release bearing according to one of claims 2-9, characterized in that the clutch by means of the associated. Motion or displacement control the disc in one Piece hereby produced ν pivot pins. 309809/0265 BATH ORIGINAL JH Blank page