DE102017127917A1 - Coupling arrangement for a vehicle - Google Patents

Abstract

The invention relates to a clutch assembly for a vehicle, comprising a friction clutch (2) which is arranged between a drive shaft and a transmission input shaft (4) for transmitting torques, a transmission input shaft (4) and a release bearing (5), wherein the friction clutch (2 ) a counter-plate (6), an in an axial direction (7) for opening and closing the friction clutch (2) by the release bearing (5) displaceable pressure plate (8) and between the counter-plate (6) and the pressure plate (8) arranged Clutch disc (10), wherein the transmission input shaft (4), starting from a transmission input shaft (4) supporting the main bearing (12) through the release bearing (5), the pressure plate (8) and the clutch disc (9) to a first end ( 13), wherein the first end (13) via a pilot bearing (14) is mounted in the counter-plate. In a clutch arrangement, the first end (13) of the transmission input shaft (4) by a compensating element (15) comprises that when tilting the friction clutch (2) relative to the transmission input shaft (4) with the pilot bearing (14) is in operative connection.

Description

The invention relates to a clutch assembly for a vehicle, comprising a friction clutch, which is arranged between a drive shaft and a transmission input shaft for transmitting torque, a transmission input shaft and a release bearing, wherein the friction clutch is a counter-plate, one in an axial direction for opening and closing the friction clutch extending through the release bearing displaceable pressure plate and arranged between the counter-plate and the pressure plate clutch disc, wherein the transmission input shaft extending from a transmission input shaft bearing main bearing through the release bearing, the pressure plate and the clutch disc to a first end, wherein the first end via a Pilot bearing is stored in the counter plate.

Friction clutches are used in automotive engineering in particular the interruption of a torque flow from a drive unit to a drive train of the motor vehicle. To operate such friction clutches releasers are known, for example in the manner of a Zentralausrückers. The disengers are mounted in particular in a bell housing and / or the friction clutches, in particular on a flywheel, for example a dual-mass flywheel, which is also referred to below as a counter-plate, the drive unit. Zentralausrücker here regularly have a release bearing, the e.g. with at least one piston, which is adjustable relative to the release bearing by a hydraulic medium along an axial direction is formed. The piston acts in known friction clutches on disc spring tongues of a plate spring, wherein a pressure plate against the counter-plate of the friction clutch can be pressed by the plate spring, so that a clutch disc is clamped with friction linings in between.

From a still unpublished German application of the applicant with the file number DE 10 2016 210 670.8 a transmission input shaft is known which extends from a gear through the release bearing, the pressure plate and the clutch disc to a first end of the transmission input shaft, wherein the first end is mounted via a pilot bearing in the counter-plate. This pilot bearing is particularly suitable for receiving forces acting in the radial direction. As a result of these forces, a misalignment of the friction clutch or performs the friction clutch rolling movements. In this case, the axis of rotation of the friction clutch and the axis of rotation of the transmission input shaft are tilted to each other. Tilt compensation takes place via the release bearing.

The invention has for its object to provide a clutch assembly for a vehicle, in which the described solution is improved.

According to the invention the object is achieved in that the first end of the transmission input shaft is comprised of a compensating element which is in operative connection with the pilot bearing with a tilting of the friction clutch with respect to the transmission input shaft. This arrangement has the advantage that additional loads are compensated. The additional loads caused by skewing or rolling movements of the friction clutch due to the rotational irregularities of the engine and a resulting axial movement of the engine crankshaft. The compensation element thus represents a cost-effective variant for tilt compensation on the release bearing.

Advantageously, the compensating element is formed elastically deformable for receiving tilting and tumbling movements of the friction clutch after exhaustion of a pilot bearing tilting game. The compensating element represents as far as a flexible element, which allows a resilience by the elastic deformation, whereby the additional loads are easily compensated. The tilting and misalignment are thus compensated in the compensating element and no longer in the pilot bearing or via the rolling contact.

In one embodiment, the pilot bearing, preferably a needle bearing, is installed in the counterplate. The interaction with the compensation element prevents overloading of the pilot bearing by increased Wälzkontaktpressung and reduces damage to the pilot bearing. Due to the use of the compensating element, the pilot bearing can be selected in a smaller design and be designed for example as a needle bearing.

In a variant, the counterplate is designed as a flywheel, preferably as a dual mass flywheel.

The invention allows numerous embodiments. One of them will be explained in more detail with reference to the figure shown in the drawing.

• 1 ein Ausführungsbeispiel der erfindungsgemäßen Kupplungsanordnung.

It shows:

• 1 An embodiment of the coupling arrangement according to the invention.

1 shows a coupling arrangement 1 for a motor vehicle in a side view in section. The coupling arrangement 1 Coaxially arranged, a friction clutch 2 between a non-illustrated drive shaft and a transmission input shaft for transmission is arranged by torques, a transmission input shaft 4 as well as a release bearing 5 , The friction clutch 2 includes a counter plate 6 one in an axial direction 7 for opening and closing the friction clutch 2 through the release bearing 5 movable pressure plate 8th and one between the counter plate 6 and the pressure plate 8th arranged clutch disc 9 ,

The release bearing 5 is designed here as Zentralausrücker, via an actuator 3 along the axial direction 7 is adjustable. The release bearing 5 acts on the friction clutch 2 on plate spring tongues of a plate spring 10 , whereby by the plate spring 10 the pressure plate 8th against the counter-plate 6 the friction clutch 2 is pressable, leaving the clutch disc 9 clamped with friction linings in between. In the present case, the friction clutch 2 closed. A torque of the drive unit is so from the back plate 6 and pressure plate 8th on the clutch disc 9 and one with the clutch disc 9 rotatably connected transmission input shaft 4 transfer. The operation of the diaphragm spring 10 through the release bearing 5 leads to a displacement of the pressure plate 8th along the axial direction 7 , so that the clamping action on the clutch disc 9 is released, the friction clutch 2 is then open. The friction clutch 2 is connected to a drive shaft of the drive unit.

The release bearing 5 is via the actuator 3 through a slave cylinder 11 actuated. The transmission input shaft 4 extends from a main bearing facing the transmission 12 through the release bearing 5 , the pressure plate 8th and the clutch disc 9 to a first end 13 the transmission input shaft 4 , where the first end 13 via a pilot camp 14 in the counter-plate 6 is stored. The friction clutch 2 has at least one compensation element 15 on which the first end 13 the transmission input shaft 4 includes. The compensation element 15 is between pilot camp 14 and the counter-plate 6 stored, with the requirements 16 of the compensating element 15 on the counter plate 6 are arranged. The starting element 15 is elastic and forms perpendicular to the pilot camp 14 a compensation gap 17 , Through the compensation element 15 a tilt compensation is realized, which has a defined tilt 18 or a circumferential wobbling movement of the friction clutch 2 in one area. This area corresponds to a match of the pilot camp 14 , In the area of this game becomes the pilot camp 14 not charged. From a predetermined degree of tilt 18 the friction clutch 2 opposite the transmission input shaft 4 contacts the elastically formed compensation element 15 the pilot camp 14 and relieves the pilot camp 14 , This is done by the compensation element 15 Support points for the transmission input shaft 4 provided in addition to the main warehouse 12 the transmission input shaft 4 Can absorb forces. These additional powers will be after exhausting the game of the pilot camp 14 only from the compensation element 15 compensated, which is why a smaller pilot camp 14 , For example, a needle bearing, can be used.

LIST OF REFERENCE NUMBERS

1

clutch assembly

2

friction clutch

3

actuator

4

Transmission input shaft

5

release bearing

6

counterplate

7

axial direction of the transmission input shaft

8th

pressure plate

9

clutch disc

10

Belleville spring

11

slave cylinder

12

main bearing

13

first end of the transmission input shaft

14

pilot bearing

15

compensation element

16

Conditions of the compensation element

17

compensation gap

18

tilt

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 102016210670 [0003]

Claims (4)

A clutch assembly for a vehicle, comprising a friction clutch (2) disposed between a drive shaft and a transmission input shaft (4) for transmitting torque, a transmission input shaft (4) and a release bearing (5), the friction clutch (2) comprising a backing plate (5). 6), an in an axial direction (7) for opening and closing the friction clutch (2) by the release bearing (5) displaceable pressure plate (8) and between the counter-plate (6) and the pressure plate (8) arranged clutch disc (10) wherein the transmission input shaft (4) extends from a main bearing (12) carrying the transmission input shaft (4) through the release bearing (5), the pressure plate (8) and the clutch disc (9) to a first end (13), wherein the first end (13) is mounted in the counter-plate (6) via a pilot bearing (14), characterized in that the first end (13) of the transmission input shaft (4) is surrounded by a compensating element (15), that with a tilting of the friction clutch (2) relative to the transmission input shaft (4) with the pilot bearing (14) is in an operative connection. Coupling arrangement according to Claim 1 , characterized in that the compensating element (15) is formed elastically deformable for receiving tilting and wobbling movements of the friction clutch (2) after using up a pilot bearing tilting game. Coupling arrangement according to Claim 1 or 2 , characterized in that the pilot bearing (14), preferably a needle bearing, in the counter-plate (6) is installed. Coupling arrangement according to Claim 1 . 2 or 3 , characterized in that the counter-plate (6) is designed as a flywheel, preferably as a dual-mass flywheel.

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