DE102018100213A1 - Adjustment device for one for a friction clutch - Google Patents

Abstract

The invention relates to an adjusting device (1) for a friction clutch (2), wherein the adjusting device (1) is a force-controlled adjusting device (1) and at least a first pin (3) and a second pin (4), each with the friction clutch ( 2), as well as in a circumferential direction (5, 6) about an axis of rotation (7) of the adjusting device (1) between an initial position (8) and an end position (9) relative to the two bolts (3, 4) rotatable adjusting ring ( 10) having a plurality of ramps (11), the starting position (8) being defined by a first stop (12) formed by a first contact surface (13) arranged on the adjusting ring (10) and the first pin (3) is, wherein the end position (9) by a second stop (14) is defined, which is formed by a on the adjusting ring (10) arranged second contact surface (15) and the second bolt (4).

Description

The present invention relates to a force-controlled adjusting device for a friction clutch. The friction clutch comprises at least one counterplate, a pressure plate displaceable relative to the counterplate along an axial direction, and the adjusting device.

A force-adjusting device is z. B. from the DE 10 2008 033 030 A1 known. In the case of the friction clutch shown there, a sensing ring, which slides on a counter-ramp, is provided, which in the circumferential direction is acted upon by a spring force of a tension spring relative to a coupling housing part (coupling housing). The Sensierring is frictionally locked by means of a riveted to the coupling housing part clamping spring against a plate spring (lever spring) for moving a pressure plate on a counter plate. Between the pressure plate and the counter plate provided with friction linings clutch disc can be pressed frictionally to transmit a torque. With wear of the friction linings, the stroke of the pressure plate increases, whereby the plate spring must perform a correspondingly large stroke for closing the friction clutch. The ring-shaped clamping spring is coupled via a hook with the plate spring, so that the plate spring can reduce the clamping force of the clamping spring on the Sensierring at a correspondingly large stroke of the plate spring or even can lift the clamping spring of the Sensierring. At a wear exceeding a tolerable extent of the stroke of the plate spring is so large that the Sensierring can overcome the frictionally applied clamping force of the clamping spring, whereby the Sensierring is rotated by the spring force applied by the tension spring in the circumferential direction by an angular amount. The sensing ring configured in a ramp shape in the axial direction slides on the counter ramp of the coupling housing part, whereby the axial distance increases until the clamping force of the clamping spring is sufficient again to frictionally block the sensing ring from further movement in the circumferential direction. When the friction clutch is opened, the disk spring can strike the sensing ring at a point displaced in the axial direction due to the twisted sensing ring, so that the disk spring lifts off from an adjusting ring for adjusting the wear-related incorrect spacing or at least reduces a clamping force on the adjusting ring. The adjusting ring is also acted upon in the circumferential direction with a spring force, so that the ramp-shaped adjusting ring in the axial direction can slide on a corresponding counter-ramp of the pressure plate until the clamping force provided by the plate spring is again sufficient to prevent further rotation of the adjusting ring. The adjusting ring can thereby bridge in the axial direction a greater distance between the diaphragm spring and the pressure plate, whereby the wear-related fault clearance of the pressure plate is adjusted to the counter plate and the plate spring with a correspondingly lower stroke, the pressure plate can move to the counter plate.

An adjusting is limited in terms of its rotation in the circumferential direction by a first stop (initial position, so far no sensed wear) and a second stop (end position, maximum adjustment is done).

There is a continuing need to further develop adjusting devices of friction clutches.

Proceeding from this, the object of the present invention is to at least partially solve the problems known from the prior art. In particular, an adjusting device is to be proposed in which the largest possible rotation (ie, by as large an angle as possible) between the initial position and the end position is possible.

This object is achieved with a force-adjusting device for a friction clutch according to the features of independent claim 1. Further advantageous embodiments of the invention are specified in the dependent formulated claims. The individually listed in the dependent formulated features can be combined in a technologically meaningful way and can define further embodiments of the invention. In addition, the features specified in the claims are specified and explained in more detail in the description, wherein further preferred embodiments of the invention are shown.

The invention relates to an adjusting device for a friction clutch, wherein the adjusting device is a force-controlled adjusting device and at least a first pin and a second pin, which are each connected to the friction clutch, as well as in a circumferential direction about an axis of rotation of the adjusting device between a starting position and an end position Having opposite the two bolts rotatable adjusting ring with ramps. The starting position is defined by a first stop, which is formed by an adjusting ring arranged on the first contact surface and the first pin, wherein the end position is defined by a second stop, which is formed by a adjusting ring arranged on the second contact surface and the second pin.

With regard to the operation of a force-adjusting device z. B. to the aforementioned DE 10 2008 033 030 A1 directed. There an adjusting ring is already described as part of a readjustment.

The two bolts are in particular components connected to the clutch cover, with respect to which the adjusting ring is rotatably arranged. The bolts are not fixed to a cylindrical shape or the like. Rather, the bolts described here can be formed by any component that rotatably z. B. is connected to the clutch cover, so that stops for the initial position and the end position can be formed by this component or these components.

Preferably, however, the bolts are centering bolts of the friction clutch, in particular centering bolts for the sensing ring. Preferably, the bolts on the clutch cover (or a clutch cover part) are fixed.

Here it is now proposed that the first stop with the first pin and the second stop are formed with the second pin. Compared to an embodiment in which both stops are formed with a single bolt, here the angular amount by which the adjusting ring between the starting position and the end position is rotatable, can be increased.

In particular, the two bolts are spaced apart along the circumferential direction. The first bolt and the second bolt are in particular arranged alternately along the circumferential direction.

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

The first contact surface and the second contact surface are preferably arranged on a common projection of the adjusting ring, the first contact surface facing in a first circumferential direction and the second contact surface in a second circumferential direction opposite to the first circumferential direction.

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

The contact surfaces may be arranged along the circumferential direction on a first side of the first bolt. The adjusting ring has at least one guide blade extending from a connection to the adjusting ring along the circumferential direction for a spring to be arranged thereon; wherein the at least one guide blade is arranged on a first side opposite the second side of the first bolt.

The spring on the guide blade is used to store energy from the rotation of the Sensierrings, so by the rotation of the Sensierrings later (when opening the friction clutch and reducing a clamping force on the adjusting) a rotation of the adjusting can be done.

In particular, the connection of the at least one guide blade in the end position of the adjusting device can be arranged along the circumferential direction immediately adjacent to the first bolt.

The connection along the circumferential direction is preferably arranged at a distance of at most 10 degrees of angle, in particular by at most 5 degrees of angle, from the first bolt.

It is further proposed a friction clutch, at least comprising a counter-plate and a relation to the counter-plate along an axial direction displaceable pressure plate and with the described adjusting device for adjusting a wear-related misalignment of the pressure plate to the counter-plate. The adjusting device comprises at least one spring-loaded in a circumferential direction and rotatable Sensierring for sensing the wear-related pitch of the pressure plate to the counter-plate, a spring-loaded in the circumferential direction and rotatable adjusting ring for adjusting the wear-related misalignment of the pressure plate to the counter plate, and a lever spring for moving the pressure plate on the Sensierring on.

The comments on the friction clutch apply equally to the adjuster and vice versa.

By way of precaution, it should be noted that the numerical terms used here ("first", "second",...) Primarily (only) serve to distinguish a plurality of similar objects, variables or processes, ie in particular no dependence and / or order of these objects, quantities or mandate processes to one another. If a dependency and / or order are required, this is explicitly stated here or it obviously results for the person skilled in the art when studying the concretely described embodiment.

• 1: eine bekannte Reibungskupplung in einer Seitenansicht im Schnitt;
• 2: einen Verstellring gemäß einer ersten Ausführungsvariante in einer perspektivischen Ansicht;
• 3: eine nicht erfindungsgemäße Nachstelleinrichtung mit einem Verstellring gemäß einer zweiten Ausführungsvariante in einer perspektivischen Ansicht;
• 4: eine Nachstelleinrichtung mit einem Verstellring gemäß 2 in einer perspektivischen Ansicht;
• 5: ein Detail der 4 in einer Ansicht entlang der Drehachse; und
• 6: die Nachstelleinrichtung nach 4 und 5 in einer weiteren perspektivischen Ansicht.

The invention and the technical environment will be explained in more detail with reference to FIGS. It should be noted that the Invention should not be limited by the embodiments shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figures and to combine them with other components and findings from the present description and / or figures. In particular, it should be noted that the figures and in particular the illustrated proportions are only schematic. The same reference numerals designate the same objects, so that explanations of other figures can be used if necessary. Show it:

• 1 a known friction clutch in a side view in section;
• 2 : an adjusting ring according to a first embodiment in a perspective view;
• 3 a non-inventive adjusting device with an adjusting ring according to a second embodiment in a perspective view;
• 4 an adjusting device with an adjusting ring according to 2 in a perspective view;
• 5 : a detail of 4 in a view along the axis of rotation; and
• 6 : the adjuster after 4 and 5 in a further perspective view.

1 shows a known friction clutch 2 in a side view in section. On the remarks in the DE 10 2008 033 030 A1 is hereby referred. The friction clutch shown here 2 includes a counter plate 23 and two opposite the counter plate 23 along an axial direction 24 movable pressure plates 25 , Further, the friction clutch includes 2 an adjustment device 1 for adjusting a wear-related incorrect spacing of the pressure plate 25 to the counter-plate 23 , The adjusting device 1 includes one in a circumferential direction 5 . 6 spring-loaded and rotatable sensing ring 26 for sensing the wear-related pitch of the pressure plate 25 to the counter-plate 23 , one in the circumferential direction 5 . 6 spring-loaded and rotatable adjusting ring 10 for adjusting the wear-related incorrect spacing of the pressure plate 25 to the counter-plate 23 , as well as a lever spring 27 for moving the pressure plate 25 over the sensing ring 26 ,

2 shows an adjusting ring 10 according to a first Ausführunsvariante in a perspective view. The adjusting ring 10 has a plurality of ramps 11 on and guide swords 20 , each with a connection 19 to the adjusting ring 10 are connected. Next comprises the adjusting ring 10 projections 16 that the attacks 12 . 14 for the starting position 8th (please refer 4 and 5 ) and the end position 9 (please refer 6 ) form.

3 shows an adjusting device not according to the invention 1 with an adjusting ring 10 according to a second embodiment in a perspective view.

The adjusting device 1 includes first bolts 3 and second bolt 4 , each with the clutch cover 28 are connected, as well as one in a circumferential direction 5 . 6 around a rotation axis 7 the adjusting device 1 between a starting position 8th and an end position 9 opposite the two bolts 3 . 4 rotatable adjusting ring 10 with ramps 11 , The starting position 8th is through a first stop 12 defined by one on the adjusting ring 10 arranged first contact surface 13 and the first bolt 3 is formed, the end position 9 through a second stop 14 is defined by a on the adjusting ring 10 arranged second contact surface 15 and the first bolt 3 is formed.

Here are both stops 12 . 14 with the first bolt 3 formed, with the contact surfaces 13 . 15 at mutually different projections 16 the adjusting ring are arranged.

4 shows an adjusting device 1 with an adjusting ring 10 according to 2 in a perspective view. 5 shows a detail of 4 in a view along the axis of rotation 7 , 4 and 5 will be described together below.

The adjusting device 1 includes first bolts 3 and second bolt 4 , each with the clutch cover 28 are connected, as well as one in a circumferential direction 5 . 6 around a rotation axis 7 the adjusting device 1 between a starting position 8th and an end position 9 opposite the two bolts 3 . 4 rotatable adjusting ring 10 with ramps 11 , The starting position shown here 8th the adjusting device 1 is through a first stop 12 defined by one on the adjusting ring 10 arranged first contact surface 13 and the first bolt 3 is formed, the end position 9 (please refer 6 ) by a second stop 14 is defined by a on the adjusting ring 10 arranged second contact surface 15 and the second bolt 4 is formed.

So here's the first stop 12 with the first bolt 3 and the second stop 14 with the second bolt 4 educated. Compared to an execution in which both attacks 12 . 14 with a single bolt 3 . 4 are trained (see 3 ), here can be the angular amount to which the adjusting ring 10 between the starting position 8th and the end position 9 is rotatable, be enlarged, since here only a common projection 16 for both contact surfaces 13 . 15 is being used. This is between the connection 19 of the leadership sword 20 and the first bolt 3 a larger angular range for rotation of the adjusting ring 10 to disposal.

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

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

The contact surfaces 13 . 15 are along the circumferential direction 5 . 6 on a first page 18 of the first bolt 3 arranged. The adjusting ring 10 has a plurality of each starting from a connection 19 to the adjusting ring 20 along the circumferential direction 5 . 6 extending guide swords 20 for each spring to be arranged thereon 21 on. Every leadership sword 20 is on one of the first page 18 opposite second side 22 of the first bolt 3 arranged.

6 shows the adjusting device 1 to 4 and 5 in a further perspective view. On the comments too 4 and 5 will be referred.

The end position shown here 9 the adjusting device 1 is through a second stop 14 defined by one on the adjusting ring 10 arranged second contact surface 15 and the second bolt 4 is formed. The connection 19 of the respective leadership sword 20 is in the final position 9 the adjusting device 1 along the circumferential direction 5 . 6 immediately adjacent to the first bolt 3 arranged. Here is the connection 19 along the circumferential direction 5 . 6 by a small angle amount from the first bolt 3 spaced apart.

LIST OF REFERENCE NUMBERS

1

readjustment

2

friction clutch

3

first bolt

4

second bolt

5

first circumferential direction

6

second circumferential direction

7

axis of rotation

8th

starting position

9

end position

10

adjusting

11

ramp

12

first stop

13

first contact surface

14

second stop

15

second contact surface

16

head Start

17

radial direction

18

first page

19

connection

20

guide bar

21

feather

22

second page

23

counterplate

24

axial direction

25

pressure plate

26

Sensierring

27

lever spring

28

clutch cover

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102008033030 A1 [0002, 0008, 0024]

Claims (8)

Adjusting device (1) for a friction clutch (2), wherein the adjusting device (1) is a force-controlled adjusting device (1) and at least a first pin (3) and a second pin (4) which are each connected to the friction clutch (2) , and in a circumferential direction (5, 6) about an axis of rotation (7) of the adjusting device (1) between an initial position (8) and an end position (9) relative to the two bolts (3, 4) rotatable adjusting ring (10) with a A plurality of ramps (11), the starting position (8) being defined by a first stop (12) formed by a first contact surface (13) and the first bolt (3) arranged on the adjusting ring (10), the End position (9) by a second stop (14) is defined, which is formed by a on the adjusting ring (10) arranged second contact surface (15) and the second bolt (4). Adjustment device (1) according to Claim 1 wherein the first contact surface (13) and the second contact surface (15) are arranged along the circumferential direction (5, 6) between the first bolt (3) and the second bolt (4). Adjusting device (1) according to one of the preceding claims, wherein the first contact surface (13) and the second contact surface (15) on a common projection (16) of the adjusting ring (10) are arranged, wherein the first contact surface (13) in a first circumferential direction (5) and the second contact surface (15) in a first circumferential direction (5) opposite second circumferential direction (6). Adjusting device (1) according to one of the preceding claims, wherein the projection (16), starting from the adjusting ring (10) in a radial direction (17) extends inwardly. Adjusting device (1) according to one of the preceding claims, wherein the contact surfaces (13, 15) along the circumferential direction (5, 6) on a first side (18) of the first bolt (3) are arranged; wherein the adjusting ring (10) at least one extending from a connection (19) to the adjusting ring (10) along the circumferential direction (5, 6) extending guide blade (20) for a spring to be arranged thereon (21); wherein the at least one guide blade (20) on one of the first side (18) opposite the second side (22) of the first bolt (3) is arranged. Adjustment device (1) according to Claim 5 , wherein the connection (19) of the at least one guide blade (20) in the end position (9) of the adjusting device (1) along the circumferential direction (5, 6) is arranged immediately adjacent to the first pin (3). Adjustment device (1) according to Claim 6 , wherein the connection (19) along the circumferential direction (5, 6) by at most 10 angular degrees from the first bolt (3) is arranged spaced. A friction clutch (2) comprising at least one counterplate (23) and a pressure plate (25) displaceable with respect to the counterplate (23) along an axial direction (24), and an adjuster (1) according to any one of the preceding claims for adjusting a wear - related misalignment Pressure plate (25) to the counter-plate (23), wherein the adjusting device (1) in a circumferential direction (5, 6) spring-loaded and rotatable Sensierring (26) for sensing the wear-related misalignment of the pressure plate (25) to the counter plate (23) in the circumferential direction (5, 6) spring-loaded and rotatable adjusting ring (10) for adjusting the wear-related misalignment of the pressure plate (25) to the counter-plate (23), and a lever spring (27) for moving the pressure plate (25) via the sensing ring (26 ) having.

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