CN110067817B

CN110067817B - Compensation adjustment device for a friction clutch

Info

Publication number: CN110067817B
Application number: CN201910010946.9A
Authority: CN
Inventors: A·格拉塞尔; M·许贝尔
Original assignee: Schaeffler Technologies AG and Co KG
Current assignee: Schaeffler Technologies AG and Co KG
Priority date: 2018-01-08
Filing date: 2019-01-07
Publication date: 2022-07-05
Anticipated expiration: 2039-01-07
Also published as: CN110067817A; DE102018100213A1

Abstract

The invention relates to a compensation adjustment device (1) for a friction clutch (2), the compensation adjustment device (1) being a force-controlled compensation adjustment device (1) and comprising at least one first bolt (3) and a second bolt (4) and comprising an adjustment ring (10) having a plurality of ramps (14), which are each connected to the friction clutch (2), the adjustment ring being rotatable in the circumferential direction (5, 6) about an axis of rotation (7) of the compensation adjustment device (1) between an initial position (8) and a final position (9) relative to the two bolts (3, 4), the initial position (8) being defined by a first stop (12) which is formed by a first contact surface (13) arranged on the adjustment ring (10) and the first bolt (3), the final position (9) being defined by a second stop (14) which is formed by a second contact surface (15) arranged on the adjustment ring (10) and the second bolt (4).

Description

Compensation adjustment device for a friction clutch

Technical Field

The invention relates to a force-controlled compensation adjustment device for a friction clutch. The friction clutch includes: at least one counterplate, a pressure plate displaceable in the axial direction relative to the counterplate, and a compensation adjustment device.

Background

A force-controlled compensation adjustment device is known, for example, from DE102008033030a 1. In the friction clutch shown here, a sensor ring (Sensierring) is provided which slides on a counter ramp (gegenerampe) and is acted upon in the circumferential direction by the spring force of a tension spring relative to a clutch housing part (clutch housing). The sensor ring is locked in a friction-locking manner by means of a clamping spring riveted to the clutch housing part relative to a disk spring (lever spring) which serves to move the pressure plate onto the counter pressure plate. The clutch disk provided with the friction lining can be pressed between the pressure plate and the counter pressure plate in a friction-locking manner so as to transmit torque. In the event of wear of the friction linings, the path of travel of the pressure plate becomes large, so that the cup spring has to perform a correspondingly large stroke in order to close the friction clutch. Such a clamping spring of annular configuration is coupled by means of the hook to the disk spring, so that the disk spring, with a correspondingly large stroke of the disk spring, can reduce the clamping force exerted by the clamping spring on the sensor ring or even lift the clamping spring off the sensor ring. In the event of wear beyond an acceptable level, the travel of the cup spring is so great that the sensing ring can overcome the clamping force exerted by the clamping spring in a frictionally locking manner, so that the spring force exerted by the tension spring twists the sensing ring in the circumferential direction by an angular amount. The sensor ring, which is formed as a ramp in the axial direction, slides on a counter ramp of the clutch housing part, so that the axial distance increases until the clamping force of the clamping spring is again sufficiently great to prevent further movement of the sensor ring in the circumferential direction in a friction-locked manner. In the event of disconnection of the friction clutch, the disk spring can be stopped by the twisted sensor ring at a point on the sensor ring that is displaced in the axial direction, so that the disk spring is lifted off the adjusting ring, or at least the clamping force exerted on the adjusting ring, which is used to compensate for the wear-induced tolerance gap. The adjusting ring is likewise acted upon by a spring force in the circumferential direction, so that the adjusting ring, which is formed as a ramp in the axial direction, can slide on a corresponding counter ramp of the pressure plate until the clamping force provided by the disk spring is sufficient again to prevent further twisting of the adjusting ring. The adjusting ring can thereby bridge a relatively large distance between the cup spring and the pressure plate in the axial direction, so that wear-induced tolerance distances of the pressure plate to the counter-pressure plate are compensated for, and the cup spring can move the pressure plate onto the counter-pressure plate with a correspondingly small stroke.

The adjustment ring is limited with respect to its rotation in the circumferential direction by a first stop (initial position, up to which there is no wear sensed) and a second stop (end position, which enables maximum compensation adjustment).

There is a continuing need in the art to further develop a compensating adjustment device for a friction clutch.

Disclosure of Invention

Starting from this, the object of the invention is to at least partially solve the problems known from the prior art. In particular, a compensation adjustment device is to be provided which makes it possible to achieve a maximum possible rotation (i.e. a maximum possible angular value) between an initial position and a final position.

The object is achieved by a force-controlled, optimized compensation controller for a friction clutch. Further advantageous embodiments of the invention are specified in the dependent claims. The features listed individually in the dependent claims can be combined with one another in a technically meaningful manner and can be further configurations of the invention. Furthermore, the features specified in the claims are described and illustrated in further detail in the description, wherein further advantageous configurations of the invention are also given.

The invention relates to a compensation adjustment device for a friction clutch, wherein the compensation adjustment device is force-controlled and comprises at least one first bolt (Bolzen) and a second bolt, which are each connected to the friction clutch, and an adjustment ring having a plurality of ramps, which can be rotated relative to the two bolts between an initial position and a final position in a circumferential direction defined about an axis of rotation of the compensation adjustment device. The initial position is defined by a first stop formed by a first contact surface arranged on the adjusting ring and by a first bolt, wherein the end position is defined by a second stop formed by a second contact surface arranged on the adjusting ring and by a second bolt.

Reference is made, for example, to the abovementioned DE102008033030a1 with regard to the force-controlled compensation adjustment. The adjusting ring has already been described here as a component of the compensation adjustment device.

The two pins are in particular members connected to the clutch cover, and the adjusting ring is arranged so as to be rotatable relative to these pins. Here, these pins are not specified to be cylindrical shapes or the like. Rather, the bolt described here can be formed by any rotationally fixed component, for example, connected to the clutch cover, so that the stop for the initial position and the end position is formed by this or these components.

Preferably, however, these pins are centering pins of a friction clutch, in particular for a sensor ring. Preferably, the pins are fixedly arranged on the clutch cover (or clutch cover part).

It is proposed that the first stop is formed together with the first bolt and the second stop is formed together with the second bolt. In contrast to the embodiment in which both stops are formed together with a single bolt, the angle by which the adjusting ring can be rotated between the initial position and the end position can also be increased in this case.

In particular, the two pins are arranged spaced apart from one another in the circumferential direction. In particular, the first and second pins are arranged alternately in the circumferential direction.

In particular, the first contact surface and the second contact surface are arranged between the first bolt and the second bolt in the circumferential direction.

Preferably, the first contact surface and the second contact surface are arranged on a common projection of the adjusting ring, wherein the first contact surface points in a first circumferential direction and the second contact surface points in a second circumferential direction opposite to the first circumferential direction.

In particular, the projection extends from the adjusting ring in the radial direction.

These contact surfaces can be arranged in the circumferential direction on a first side of the first bolt. The adjusting ring has at least one sword-shaped guide (fuehrungschwert) for the springs to be arranged thereon, which sword-shaped guide extends in the circumferential direction starting from an attachment to the adjusting ring; wherein the at least one sword guide is arranged on a second side of the first peg opposite the first side.

The spring on the sword guide serves to store energy from the twisting of the sensing ring, whereby, by the twisting of the sensing ring, a twisting of the adjusting ring can subsequently be achieved (in the case of a disengaged friction clutch and in the case of a reduced clamping force applied to the adjusting ring).

In particular, in the end position of the compensation adjustment device, the attachment of the at least one sword-shaped guide can be arranged directly adjacent to the first pin.

Preferably, the attachment portion is arranged spaced apart from the first pin by an angle of at most 10 degrees, in particular at most 5 degrees, in the circumferential direction.

The invention further relates to a friction clutch comprising at least one counterplate and a counterplate which is displaceable relative to the counterplate in the axial direction, and comprising the described compensation adjustment device for compensating for an error distance from the counterplate to the counterplate caused by wear. The compensation adjustment device includes: a sensing ring for sensing wear-induced error spacing of the platens to the pair of platens, the sensing ring being resiliently loaded (siderbeltet) in a circumferential direction and capable of twisting; an adjusting ring for compensating for an error distance caused by wear of the adjusting ring to the pair of pressing plates, the adjusting ring being elastically loaded in a circumferential direction and being capable of being twisted; and a lever spring for moving the pressure plate through the sensing ring.

The embodiment of the friction clutch according to the invention is likewise suitable for the compensation adjustment device according to the invention and vice versa.

It is to be noted in particular that the terms "first", "second", … … are used here primarily (exclusively) to distinguish a plurality of similar objects, dimensions or processes, i.e. in particular these objects, dimensions or processes are not necessarily predefined with respect to one another and/or with respect to their sequence. Where dependency and/or order is required, it will be apparent to those skilled in the art that such dependency and/or order may be required or necessary.

Drawings

The invention and the technical field are explained in detail below with reference to the drawings. It is to be noted that the invention should not be limited to the embodiments shown. In particular (and not shown in further detail) it is also possible to extract some aspects of the fact set forth in the drawings and to combine them with other constituents from the description and/or drawings and with common general knowledge. It is to be noted in particular that the figures and the dimensional relationships indicated in particular are only schematically illustrated. The same reference numerals denote the same objects, so that supplementary reference can be made to the description of the other drawings as necessary. It shows that:

FIG. 1: a side cross-sectional view of a known friction clutch;

FIG. 2: a perspective view of an adjustment ring according to the first embodiment variant;

FIG. 3: a perspective view of a known compensation adjustment device with an adjusting ring according to a second embodiment variant of the invention;

FIG. 4: a perspective view of a compensation adjustment device with an adjustment ring according to fig. 2;

FIG. 5: FIG. 4 is a detail view along the axis of rotation; and

FIG. 6: a further perspective view of the compensation adjustment device according to fig. 4 and 5.

Detailed Description

Fig. 1 shows a side sectional view of a known friction clutch 2. Reference is made here to the embodiment in DE102008033030a 1. The friction clutch 2 shown here comprises a counter plate 23 and two pressure plates 25 which can be displaced relative to the counter plate 23 in the axial direction 24. The friction clutch 2 further comprises a compensation adjustment device 1, wherein the compensation adjustment device 1 is used for compensating and adjusting an error distance between the pressure plate 25 and the pair of pressure plates 23 caused by abrasion. The compensation adjustment device 1 includes: a sensing ring 26 for sensing an error interval caused by wear of the platen 25 to the pair of platens 23; an adjusting ring 10 for compensating and adjusting an error interval caused by abrasion between the pressing plate 25 and the pair of pressing plates 23; and a lever spring 27 for moving the pressure plate 25 by means of the sensor ring 26, wherein the sensor ring 25 is spring-loaded and torsionally movable in the

circumferential directions

5, 6, and the adjusting ring 10 is spring-loaded and torsionally movable in the

circumferential directions

5, 6.

Fig. 2 shows a perspective view of an adjusting ring 10 according to a first embodiment variant. The adjusting ring 10 has a plurality of ramps 11 and sword-shaped guides 20, which sword-shaped guides 20 are attached to the adjusting ring 10 by attachment portions 19, respectively. The adjusting ring 10 furthermore comprises projections 16, which projections 16 form stops 12, 14 for the initial position 8 (see fig. 4 and 5) and the end position 9 (see fig. 6).

Fig. 3 shows a perspective view of a known compensation adjustment device 1 having an adjusting ring 10 according to a second embodiment variant of the invention.

The compensation adjustment device 1 comprises a first pin 3 and a second pin 4, which are each connected to a clutch cover 28, and an adjustment ring 10 having a ramp 11, which adjustment ring 10 can be rotated in the

circumferential direction

5, 6 about the axis of rotation 7 of the compensation adjustment device 1 between an initial position 8 and a final position 9 relative to the two

pins

3, 4. The initial position 8 is defined by a first stop 12, which first stop 12 is formed by a first contact surface 13 arranged on the adjusting ring 10 and by the first bolt 3, wherein the end position 9 is defined by a second stop 14, which second stop 14 is formed by a second contact surface 15 arranged on the adjusting ring 10 and by the first bolt 3.

The two stops 12, 14 are formed together with the first bolt 3, wherein the contact surfaces 13, 15 are arranged on mutually different projections 16 of the adjusting ring 10.

Fig. 4 shows a perspective view of the compensation adjustment device 1 with the adjusting ring 10 according to fig. 2. Fig. 5 shows a detail view along the rotation axis 7 of fig. 4. Fig. 4 and 5 will be explained together.

circumferential direction

pins

3, 4. The initial position 8 of the compensation adjustment device 1 shown here is defined by a first stop 12, which first stop 12 is formed by a first contact surface 13 arranged on the adjustment ring 10 and by the first bolt 3, wherein the end position 9 (see fig. 6) is defined by a second stop 14, which second stop 14 is formed by a second contact surface 15 arranged on the adjustment ring 10 and by the second bolt 4.

The first stop 12 is formed with the first bolt 3, and the second stop 14 is formed with the second bolt 4. In contrast to the embodiment described above (see fig. 3) in which the two stops 12, 14 are formed together with the

individual pins

3, 4, the angular value to which the adjusting ring 10 can be rotated between the initial position 8 and the end position 9 can be increased, since only one common projection 16 is used for the two

contact surfaces

13, 15. Thereby, the available angular range between the attachment portion 19 of the sword guide 20 and the first peg 3 is made larger.

The first contact surface 13 and the second contact surface 15 are arranged between the first pin 3 and the second pin 4 in the

circumferential direction

5, 6.

The first contact surface 13 and the second contact surface 15 are arranged on a common projection 16 of the adjusting ring 10, wherein the first contact surface 13 points in a first circumferential direction 5 and the second contact surface 15 points in a second circumferential direction 6 opposite the first circumferential direction 5. The projection 16 extends from the adjusting ring 10 in the radial direction 17.

These contact surfaces 13, 15 are arranged on a first side 18 of the first pin 3 in the

circumferential direction

5, 6. The adjusting ring 10 has a plurality of sword-shaped guides 20, which sword-shaped guides 20 serve for springs 21 arranged on the sword-shaped guides 20, respectively, which sword-shaped guides 20 extend in the

circumferential direction

5, 6, respectively, starting from attachment portions 19 attached to the adjusting ring 10. Each sword guide 20 is arranged on a second side 22 of the first peg 3 opposite the first side 18.

Fig. 6 shows a further perspective view of the compensation adjustment device 1 according to fig. 4 and 5. Reference is made to the embodiments of fig. 4 and 5. The end position 9 of the compensation adjustment device 1 shown here is defined by a second stop 14, which second stop 14 is formed by a second contact surface 15 arranged on the adjusting ring 10 and by the second bolt 4. In the end position 9 of the compensation adjustment device 1, the respective sword guide 20 is arranged in direct abutment with the first bolt 3 in the

circumferential direction

5, 6. Here, the attachment 19 is arranged spaced apart from the first peg 3 by a small angular value in the

circumferential direction

5, 6.

List of reference numerals

1 compensation adjustment device

2 Friction clutch

3 first latch

4 second latch

5 first circumferential direction

6 second circumferential direction

7 axis of rotation

8 initial position

9 terminal position

10 adjusting ring

11 slope

12 first stop

13 first contact surface

14 second stop

15 second contact surface

16 projection

17 radial direction

18 first side

19 attachment part

20 sword-shaped guide part

21 spring

22 second side

23 pairs of press plates

24 axial direction

25 pressing plate

26 sense loop

27 lever spring

28 Clutch cover

Claims

1. A compensation adjustment device (1) for a friction clutch (2),

wherein the compensation adjustment device (1) is force-controlled and has at least one first pin (3) and one second pin (4), which are each connected to the friction clutch (2), and an adjustment ring (10) which has a plurality of ramps (14) and which can be rotated relative to the two pins (3, 4) between an initial position (8) and a final position (9) in a circumferential direction (5, 6) which is defined about an axis of rotation (7) of the compensation adjustment device (1),

wherein the initial position (8) is defined by a first stop (12) which is formed by a first contact surface (13) arranged on the adjusting ring (10) and by the first bolt (3),

wherein the end position (9) is defined by a second stop (14) which is formed by a second contact surface (15) arranged on the adjusting ring (10) and by the second bolt (4).

2. Compensation adjustment device (1) according to claim 1,

wherein the first contact surface (13) and the second contact surface (15) are arranged between the first bolt (3) and the second bolt (4) along the circumferential direction (5, 6).

3. Compensation adjustment device (1) according to claim 1,

wherein the first contact surface (13) and the second contact surface (15) are arranged on a common projection (16) of the adjusting ring (10),

wherein the first contact surface (13) points in a first circumferential direction (5) and the second contact surface (15) points in a second circumferential direction (6) opposite to the first circumferential direction (5).

4. Compensation adjustment device (1) according to claim 3,

wherein the projection (16) extends from the adjusting ring (10) in the radial direction (17) in the direction of the inside.

5. Compensation adjustment device (1) according to claim 1,

wherein the contact surfaces (13, 15) are arranged on a first side (18) of the first pin (3) in the circumferential direction (5, 6);

wherein the adjusting ring (10) has at least one sword-shaped guide (20) for a spring (21) to be arranged thereon, which extends in the circumferential direction (5, 6) starting from an attachment (19) attached to the adjusting ring (10);

wherein the at least one sword-shaped guide (20) is arranged on a second side (22) of the first peg (3) opposite the first side (18).

6. Compensation adjustment device (1) according to claim 5,

wherein, in a terminal position (9) of the compensation adjustment device (1), an attachment portion (19) of the at least one sword-shaped guide (20) is arranged in direct abutment with the first peg (3) along the circumferential direction (5, 6).

7. Compensation adjustment device (1) according to claim 6,

wherein the attachment portion (19) is arranged at a distance of at most 10 degrees from the first peg (3) in the circumferential direction (5, 6).

8. Friction clutch (2) comprising at least a counterplate (23) and a pressure plate (25) displaceable in the axial direction (24) relative to the counterplate (23) and having a compensation adjustment device (1) according to one of the preceding claims for compensating an error distance caused by wear of the pressure plate (25) to the counterplate (23),

wherein the compensation adjustment device (1) comprises:

a sensing ring (26) for sensing an error distance of the pressure plate (25) to the counter pressure plate (23) caused by wear, the sensing ring being resiliently loaded in the circumferential direction (5, 6) and being torsionally movable,

an adjusting ring (10) for compensating for wear-induced tolerance distances between the pressure plate (25) and the counter pressure plate (23), said adjusting ring being spring-loaded in the circumferential direction (5, 6) and being rotatable, and

a lever spring (27) for moving the pressure plate (25) by means of the sensing ring (26).