Actuating device for a clutch, clutch, electric drive module and method for installing a clutch

Patent metadata

Field	Value
Publication number	US-9644689-B2
Application number	US-201314437443-A
Country	US
Kind code	B2
Filing date	Dec 10, 2013
Priority date	Dec 13, 2012
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

The present invention relates to an actuating device for a clutch having a stator device, a rotor device which is rotatable in relation to the stator device and a carriage device which is movable to a limited extent in an axial direction in relation to the rotor device and which supplies tensile and thrust forces, which is operatively connected to a push-pull device that is designed to exert tensile and thrust forces on a lever element of the clutch, where the push-pull device has at least one pull element and at least one push element, between which the lever element can be accommodated, and which are connectible to one another, as well as to a clutch having an actuating device, an electric drive module having a clutch, and a method for installing a clutch having an actuating device.

First claim

What is claimed is:

1. A clutch, comprising:
a counter-pressure plate;
a clutch plate;
a contact plate movable to a limited extent in axial direction and configured to clamp the clutch plate frictionally between the contact plate and the counter-pressure plate;
a lever element configured to displace the contact plate in axial direction; and,
an actuating device operatively engaged to the lever element, the actuating device comprising:
a stator device;
a rotor device configured to rotate with respect to the stator device;
a push-pull device having at least one pull element and at least one push element securable to one another, the lever element extending radially inward beyond the at least one pull element and the at least one push element, the push-pull device configured to exert tensile and thrust forces on the lever element; and,
a carriage device operatively engaged to the push-pull device and movable to a limited extent in axial direction with respect to the rotor device, the carriage device configured to supply tensile and thrust forces to the push-pull device.

2. The clutch of claim 1 , wherein the pull element and the push element are releasably secured to one another.

3. The clutch of claim 2 , wherein the pull element and the push element are releasably secured means of a plurality of bolt-and-sleeve connections circumferentially displaced from each other.

4. The clutch of claim 1 , wherein the push element is secured to a release bearing assigned to the carriage device, wherein the push element is fixed in the axial direction with respect to the release bearing.

5. The clutch of claim 4 , wherein the push element is non-rotatably secured to an outer ring of the release bearing.

6. The clutch of claim 1 , wherein a roller screw drive is disposed between the rotor device and the carriage device, the roller screw drive having at least three coils and a recirculating roller system with rolling elements running in a roller raceway, the roller raceway having a track change region configured to enable rolling elements to run in the circumferential direction between a first and a second coil before the track change region, and rolling elements run in the circumferential direction after the track change region between the second and a third coil.

7. The clutch of claim 1 , wherein the lever element is essentially ring-shaped and has a plurality of tongues disposed between the push element and the pull element in axial direction.

8. The clutch of claim 7 , wherein the actuating device operatively engages the plurality of tongues with push element and the pull element configured to enable the plurality of tongues to be brought into contact alternately with the push element and the pull element.

9. The clutch of claim 1 , further comprising a housing component, and a central flange non-rotatably connected to the housing component and disposed between the push-pull device and the counter-pressure plate in the axial direction.

10. The clutch of claim 9 , wherein the central flange is disposed between the push-pull device and the contact plate.

11. The clutch of claim 9 , wherein the pull element is situated closer to the central flange in the axial direction than the push element.

12. The clutch of claim 9 , wherein the central flange has at least one access opening through which the push element and the pull element can be assembled together.

13. The clutch of claim 9 , wherein the central flange has at least one positioning opening through which the push element and the pull element can be positioned relative to one another.

14. The clutch of claim 9 , wherein a plurality of access openings and a plurality of positioning openings are alternatingly distributed around the circumference of the central flange, and the access openings are situated at a different radius than the positioning openings.

15. The clutch of claim 9 , wherein the pull element has positioning openings that enable a rotation of the pull element relative to the push element during the installation, and which are preferably situated at the same radius as the positioning openings of the central flange.

16. A clutch, comprising:
a counter-pressure plate;
a clutch plate;
a contact plate movable to a limited extent in axial direction and configured to clamp the clutch plate frictionally between the contact plate and the counter-pressure plate;
a lever element configured to displace the contact plate in axial direction; and,
an actuating device operatively engaged to the lever element, the actuating device comprising:
a stator device;
a rotor device configured to rotate with respect to the stator device;
a push-pull device having at least one pull element and at least one push element securable to one another, the lever element axially arranged between the at least one pull element and the at least one push element, the lever element extending radially inward beyond the at least one pull element and the at least one push element, the push-pull device configured to exert tensile and thrust forces on the lever element; and,

a carriage device operatively engaged to the push-pull device and movable to a limited extent in axial direction with respect to the rotor device, the carriage device configured to supply tensile and thrust forces to the push-pull device.

Assignees

• Schaeffler Technologies Ag

Inventors

• Nachtmann Florian
• Oster Sebastien
• Ruder Willi
• Heitz Sebastien

Classifications

• F16D23/145

  Arrangements for the connection between the thrust-ring and the diaphragm · CPC title

• Y10S903/914

  Actuated, e.g. engaged or disengaged by electrical, hydraulic or mechanical means · CPC title

• F16D13/42

  with means for increasing the effective force between the actuating sleeve or equivalent member and the pressure member · CPC title

• F16D2023/123

  Clutch actuation by cams, ramps or ball-screw mechanisms · CPC title

• Y10T29/49947

  by applying separate fastener · CPC title