DE2131285A1 - Release - Google Patents

Description

Lamellae and clutch construction

758 Buhl

Industriestr. 3 June 24th, 197o

0220

Releaser

The invention relates to a releaser, in particular for clutches, where a camp, ζ. B. a roller bearing, arranged on a sliding sleeve provided with a bore for a guide tube is, a radial play is provided between the bearing and sliding sleeve, the sliding sleeve with abutment means for not circumferential bearing ring is provided, while the other, circumferential ring has contact surfaces for the release means of the clutch and wherein the bearing by axially acting securing or holding means is secured on the sliding sleeve.

With the help of such releasers, as they have become known from DOS 1 6oo 080, the center line offset between the Release elements of a clutch, so z. B. disc spring tongues, Levers, pressure piece, etc. and a central guide tube on which the releaser rests, must be compensated because such a center line offset these parts to each other when assembling the gearbox to the engine cannot be avoided in practice.

In the case of releasers according to the DOS above, the is not used for the rotation provided bearing ring of a ball bearing, which sits with radial play on a sliding sleeve, axially against by a plate spring

109853/1739

a friction ring secured in the axial direction on the sliding sleeve pressed on.

The adjustment of the centerline offset between the releaser and the release elements takes place as soon as the rotating part of the bearing is brought into contact with the release elements of the clutch becomes, whereby due to the dynamic effects of the release means, the bearing is concentric with respect to the sliding sleeve Position is brought to the axis of rotation of the clutch release elements.

Such releasers have the disadvantage that the resistance, which opposes the single centering - due to the frictional force that is exerted by the over the release elements on the The forces exerted by the friction ring arise and are increased by the force of the disc spring - assuming extremely high values. It will take place therefore rubbing movements of the rotating ball bearing ring on the release elements over a relatively long period of time, until the centering has taken place, whereby a heavy wear and tear of these parts occurs

Furthermore, such releasers have the disadvantage that relatively many items and the corresponding brackets for these items are required, making these releasers relatively complex and therefore expensive. Furthermore, the individual parts must be manufactured within a very narrow tolerance range what requires a series of controls and what makes them a relatively high rate of reclamation is unavoidable.

109853/1739

The present invention was based on the object of addressing these disadvantages to eliminate and to create a releaser that is characterized by better and faster centering behavior and thus a reduction in wear on the release bearing and the release elements, as well as by simple manufacture both with regard to the individual parts as well as the assembly work -, lower requirements for dimensional accuracy and a reduction of the items.

According to the invention, this is the case mentioned at the outset in the case of releasers Kind achieved in that, omitting spring or clamping parts to press the bearing against the plant means, a free Play of the bearing is made possible both in the axial and in the radial direction, namely with respect to securing or holding means, which are provided within the radial bearing extension on the sliding sleeve, for. B. hinged, attached od. Like. And / or with the Securing or holding means which are provided on one of the bearing rings, e.g. B. hinged, fastened, attack or the like.

Due to this jamming-free play of the bearing against the sliding sleeve a significantly easier and faster alignment is made possible, since this mounting of the bearing reduces the resistance, which opposes the single centering, only by the friction of the non-rotating bearing ring on the axially fixed one Plant part of the sliding sleeve, such. B. a flange. This results in significantly less wear and tear on the one on the release means bearing ring as well as on the release means itself. By using a smaller number of

109853/1739

The releaser becomes cheaper and easier to manufacture and it is still possible to manufacture and assemble within a larger tolerance range.

In the case of releasers according to the present invention, in particular Advantageously, both radial and axial roller bearings can be used, and even standard bearings can be used in various embodiments be applied.

As already mentioned, these advantages can be achieved in that the bearing compared to the securing or refrigerants, which are articulated on the sliding sleeve within the radial bearing extension and / or by the fact that the bearing together with the securing or refrigerants that are attached to are hinged to one of the bearing rings, has free play on the sliding sleeve both in the axial and in the radial direction.

A number of particularly advantageous embodiments of releasers according to the invention results when the holding or securing means is articulated on the sliding sleeve.

The sliding sleeve can at least partially be a sheet metal part, the _t a radially outwardly extending Ansatsteil for the clutch operating means. As s "B.. Ausrückergabel etc., has a radially outwardly advancing contact area for one of the bearing rings, to which a bearing area for the bearing, which is encompassed radially by the bearing and which also serves as a holding or securing means, adjoins radially extending

Areas .. 109853/1739

- 5 -ORIGINAL

Such a sliding sleeve can be a sheet metal profile part as a whole, wherein the outwardly extending attachment part for the clutch actuation means is flanged to which - on the other Side - one of the bearing rings can put on. The one serving as a holding or securing means for the bearing, which extends radially The area can also consist of a flanged area or of individual, claw-like flanges.

The contact area in those at least partially made of sheet metal Releases for one of the bearing rings, namely the non-rotating bearing ring, but can also be done by a bead-like Formed be formed, a radial, step-like elevation or the like.

However, snap rings, resilient rings or. The like. Serve, which then from a groove, groove, flanging, embossing or the like. Inside the sliding sleeve the same are held or fixed.

The holding or securing means can be designed and / or arranged in such a way that the bearing directly over an end contour one of its bearing rings is secured by this holding means. On the other hand, however, the securing or holding means can also be used effectively associated counter contours of the bearing from a groove, groove, undercut. Chamfer od. The like. Be formed on the camp and Via a correspondingly wide design of the groove, groove or the like. the axial play must be created. It is also possible to use the securing means itself within the sliding sleeve Install play in the axial or radial direction.

109853/1739

Further advantageous possible embodiments of releasers according to of the invention arise when the holding or securing means are hinged to one of the bearing rings.

For this purpose, for example, snap rings, spring rings or the like in a groove, groove or similar, held in one of the bearing rings

is, at the same time in a groove, groove or the like. In the guide sleeve be held in the area with which the bearing engages over the guide sleeve. The groove, groove or the like in the Guide sleeve has a greater extension in the axial direction than the effective area of the holding or securing means. It is not there in all cases it is absolutely necessary that the snap ring, spring ring or the like hinged to one of the bearing rings, both axially and is fixed in the radial direction in the bearing ring, but the securing means can also be in the corresponding bearing ring Exhibit play.

The securing means can, however, also in a groove, groove or the like. In one of the rings, e.g. B. provided in the outer ring of a radial bearing be, this outer bearing ring overlaps the system profile for the other, ie the inner ring, at a distance and wherein the snap ring protrudes radially inward to such an extent that the sliding sleeve is secured in the axial direction.

The securing means can, however, also be formed by at least one element which is firmly connected to one of the bearing rings and that engages around parts of the sliding sleeve in the manner of a cage. A releaser designed in this way can be formed, for example, by

109853/1739 _ ₇ _

in that a cage-like sheet metal sleeve has two radially inwardly directed areas, one of which is in a groove is fixed within one of the bearing rings and the other, also radially inwardly directed area of this cage-like Component at least partially encompasses at least part of a radial extension of the sliding sleeve, so for example the attachment part for the clutch actuation means.

The securing means can, however, also be designed or arranged in this way be that they not only serve to limit the play in the axial direction, but also the play of the bearing in limit radial direction.

The use of these releasers is within the release units, particularly advantageous for motor vehicles if, according to an additional feature of the invention, the rotatably mounted part of the releaser, i.e. one of the bearing rings, also in a coupled one State of the clutch rests on the release elements of the same, because then the path losses within the release system are switched off will. Regardless of whether a mechanical, hydraulic or other actuation of the clutch is provided, it is particularly advantageous if at least approximately over the possible wear path the clutch parts of the releaser to the release elements via a one acting on the releaser or the release actuation system Energy storage is pressed.

The invention will be explained in more detail with reference to FIGS. 1 to 11 shown at least approximately in the Hi.ttelbereich of the available axial and radial play.

109853/1739 _{ßAn ΛΒ}

BAD ORIGINAL - 8 -

Figure 1 shows a releaser according to the invention in section, while Figure la is a view of the same in the direction of the arrow Ia shows.

It can be seen that the centrally guided release mechanism shown here has a radial bearing 1 which is arranged on a sliding sleeve 4 provided with an opening for a guide tube 3. The sliding sleeve 4 is a shaped sheet metal part. Furthermore, the releaser is with radially outwardly extending arms 5 or 6 for the clutch actuation mechanism, for example an external fork, Mistake. These arm-shaped attachment parts are components of an annular body 7, which has a corrugated sleeve 8, which of a beaded edge 9 of the sliding sleeve is held, pressed against an outwardly extending bead Io of the sliding sleeve 4 is. Furthermore, the releaser has a contact area 7 'to which the non-rotating ring l 'of the ball bearing 1 can apply. The one with the disengaging means of the clutch shown in a schematic manner - here with plate spring tongues 11 - circumferential ring 1 "is with a Contact area la for the release means 11 is provided. As can be seen in particular from Figure 1, has the bearing opposite the sliding sleeve a cling-free play both in the axial and also in the radial direction, with the play in the radial direction

due to the difference in diameter between the sliding sleeve 4 and the inner Bearing ring 1 'is made possible and the play in the axial direction with respect to the securing or holding means on the sliding sleeve are provided, namely opposite einm beaded edge of this sliding sleeve 4. The bearing is sealed by on known sealing means 13.

" ⁹ " 109853/1 739

The releaser according to Figure 2 also consists of a formed sheet metal sleeve 14, has a radial, outwardly extending, annular extension part 15 for the clutch actuation means, the is hinged to a flange 16, for example by spot welding. Furthermore, there is a contact area running radially outward for the one stationary bearing ring 17 'in the form of a bead 18. The second, circumferential bearing ring 17 "des The bearing 17 in turn has contact surfaces 17 a for the clutch release means 11. The bearing 17 encompasses a holding area 14 ' the sliding sleeve 14, whereby the play is made possible in the radial direction. The play of the bearing 17 in the axial direction is here also opposite of articulated or provided on the sliding sleeve Securing or holding means made possible and that these securing or holding means are made possible by bent claws 14 " educated.

The sliding sleeve 19 of the releaser according to Figure 3 has a radially outwardly extending flange 2o, on the one hand as a contact means serves for the non-rotating bearing ring 21 'and on the other hand as an attachment part for the clutch actuation means. The circulating one Ring 21 ″ of the bearing 21 is designed in such a way that it does not come into contact with the flange 2o when the ring 21 'is in contact can. The securing means is formed here from a snap ring 22 which is held in a groove 23 in the sliding sleeve 19. the the snap ring 22, d. H. the counter-contours of the bearing, which are functionally associated with the securing or holding means, consist of a Groove 21a, which allows the axial play of the bearing 21. The groove 23 in the guide sleeve 19 has such a depth that a perfect Assembly is enabled.

109853/1739 " ^lo "

FIG. 4 shows a releaser in which the play of the bearing 24 is also relative to that which is articulated on the guide sleeve 25, in a groove 26 held snap ring 27 is made possible.

In the embodiment according to Figure 5, the axial play of the bearing 28 is made possible by two securing means, one, namely a snap ring 29, in a groove 3o of the one bearing ring 28 ' is held, while the second holding or securing means 31 is fixed in a groove 32 of the guide sleeve 33.

In the case of the releaser according to FIG. 6, there are two on the sliding sleeve 34 radially outwardly directed areas 35 and 36 are provided, one of which, namely the flange 36, as an attachment for the clutch actuation means is used and the flange 35 is encompassed by the outer ring, namely the circumferential ring 37 'of the bearing 37. The flange 35 serves as a contact means for the non-rotating ring 37 ″. The holding or securing means also exist here from a snap ring 38 which is held in a groove 39 of the ring 37 ' is. Here, the bearing together with the securing means is allowed play in the axial as well as in the radial direction.

In the case of the releaser according to FIG. 7, too, the bearing with the safety or Holding means allows a game. However - in contrast ' to the releaser according to Figure 6 - the inner ring 4o 'of the bearing 4o the surrounding ring. A groove 43 is provided in a flange 41 of the sliding sleeve 42, into which a snap ring or the like 44 engages. which is placed in a groove 45 of the non-rotating bearing ring 4o ″. In the present exemplary embodiment, in particular, can the snap ring 44 acting as a securing or holding means at the same time limit the play of the bearing in the radial direction.

109853/1739

- li -

Figure 8 shows a releaser in which a snap ring 46 in inner ring 47 ″ is held in a groove 48. In the radially inner region of the sliding sleeve 49, a groove 5o is provided which is dimensioned so that the bearing 47 has a play both in the axial and in the radial direction with the securing or holding means 46 is made possible. The radial flange 51 of the sliding sleeve 49 in turn serves as an abutment for the ring 47 ", while the circumferential ring 47 ' is designed such that it cannot come into contact with the flange 51.

In Figure 9, the bearing 52 with a cage-like holding or securing means 53 is an axial and radial play Direction opposite the sliding sleeve 54 allows. For this purpose, the cage-like component 53 is on the one hand in a groove 55 of the non-circumferential Bearing ring 52 ″ and engages with a flanged edge 53 ″ a flange 56 of the sliding sleeve 54. This flanged The edge can, however, also intervene in a groove, groove or the like of the sliding sleeve, e.g. B. can have a radial extension, such as the flange 56, may be provided with such a groove. The revolving or revolving bearing ring 52 'is in turn designed such that when the ring 52 ″ is in contact, it is at a distance from the fixed flange 56.

Based on the Figure ^ o and 11, the Figure 11 is a section according to the line XI-XI of Figure Io, is a further embodiment the invention explained. In a cage-like component 57 made of sheet metal, designed as a holding part, the outer and non-rotating bearing ring 58 ″ of a ball bearing 58. The cage-like component 57 overlaps a flange at a radial distance

- 12 -

109853/1739

6o of the sliding sleeve 59. The securing means are hook-like Brackets 61 inserted into openings 62 of the holding part 57.

The invention is not limited to the illustrated embodiments limited. Thus, other means than those shown and described can also be used as securing or holding means. In particular, snap rings do not necessarily have to be used, but spring rings, snap elements or Securing means made of materials other than steel are used, e.g. B. also plastic, rubber elements or the like. Furthermore, is the invention is not limited to mechanically operated releasers, but also extends to releasers operated by pressure media, in which the camp with play according to the inventive concept Is arranged on an annular piston or the like.

The application of the release mechanism according to the invention is in release units Particularly advantageous for motor vehicles when the ring of the bearing that is provided in the coupled state is also in the coupled state rests firmly against the release elements of the clutch, since the path losses in the release system are then eliminated. Can do this Attack an energy storage device on the release device itself or on the release actuation system, so that the rotating bearing ring is permanent

There is physical contact with the clutch release elements, So for example with the tongues of the plate spring, with the levers of the clutch or with one provided on the release elements Pressure piece

109853/1739

Claims (13)

Lamellae and clutch construction
GmbH B ü h 1 7Ή1985 Industriestr. ^£ 3 - '°' June 24th, 197o O22o 7Ή1985 Claims (lT release, especially for clutches, in which a bearing, e.g. roller bearing, is arranged on a sliding sleeve provided with a bore for a guide tube, a radial play is provided between the bearing and sliding sleeve, the sliding sleeve with contact means for the non-rotating bearing ring is provided, while the other peripheral annular contact surfaces which for the disengagement of the clutch and the bearing being secured by axially effective securing or retaining means of the sliding sleeve, characterized in that with the omission of spring or clamp parts for pressing the bearing a free play of the bearing (1, 17, 21, 24, 28, 37, 4o, 47, 52, 58) both in the axial and in the radial direction with respect to securing or holding means (12, 14 ", 22 , 27, 31), which are provided within the radial bearing extension on the sliding sleeve (4, 14, 19, 25, 33) and / or with securing or holding means (29, 38, 44, 46, 53, 61, 57 ) on Bearings (29, 37, 4o, 47, 52, 58) are provided, is enabled. 2. releaser according to claim 1, characterized in that Haltebzw. Securing means (12, 14 ", 22, 27, 31) are hinged to the sliding sleeve (4; 14, 19, 25, 33) 109853 / 173Ö ORIGINAL INSPECTED 3. releaser according to claim 2, characterized in that the sliding sleeve is at least partially a shaped sheet metal part which has a radially outwardly extending attachment part (5, 6, 15) for the clutch actuation means, a radially outwardly extending contact area (7 ', 18) for one of the bearing rings (1', 17 ") and as Has holding or securing means serving, radially extending regions (12, 14 "). 4. releaser according to one of claims 1 to 3, characterized in that that the holding or securing means (22, 27, 31) of a groove, groove, flange or the like (23, 26, 32) of the sliding sleeve (19, 25, 33) are held. 5. releaser according to at least one of claims 1 to 4, characterized in that the securing or holding means (22) effectively associated counter contours of the bearing from a groove, groove, undercut. Chamfer or the like (21a) formed on the bearing (21) are. 6. releaser according to at least one of the preceding claims, characterized in that the holding or securing means (29, 38, 44, 46, 53, 57) are hinged to one of the bearing rings (28 ', 37', 4o ", 47", 52 ", 58"). 7. releaser according to claim 6, characterized in that the on one of the bearing rings (4o ", 47") articulated holding or securing means (44, 46) at the same time in a groove, groove, or the like. (43, 5o) the sliding sleeve (42, 49) is held, this groove, groove or the like having a greater extent in the axial direction than the effective area of the holding or securing means. 109853/1733 -3- 8. releaser according to at least one of claims 1 to 7, characterized characterized in that the securing means is a snap ring, spring ring, corrugated ring or the like. 9. releaser according to at least one of claims 6 to 8, characterized in that one of the bearing rings (37 ', 4o ") has the system profile (35, 41) overlaps the sliding sleeve (34, 42) for the fixed bearing ring (37 ", 4o ') and the securing or holding means (38, 44) in a groove, groove or the like (39, 45) this ring (37 ', 4o ") is supported. 10. releaser according to at least one of claims 6 and following, characterized in that the holding or securing means is formed by at least one cage-like element (53, 57), which is firmly connected to one of the bearing rings (52 ", 58") and parts (56, 6o) of the sliding sleeve (54, 59) from the cage-like Element provided means (53, 61) are encompassed. 11. releaser according to at least one of the preceding claims, characterized in that the securing or holding means (44, 46, 57) also limit the play of the bearing (4o, 47, 58) in the radial direction. 12. Release unit, in particular for motor vehicles using a releaser according to at least one of claims 1 to 11, characterized characterized in that the accompanying ring of the releaser is also connected to the clutch when the clutch is engaged Release elements the same rests. - 4 109853/1739 13. Release unit according to claim 12 , characterized in that at least approximately over the possible wear path of the clutch parts, the releaser is pressed against the release elements via an energy store acting on the release or actuation system. 109853/1 739 Blank page