Clutch device

• US 10,036,430 B2
• Filed: 12/10/2013
• Issued: 07/31/2018
• Est. Priority Date: 12/13/2012
• Status: Active Grant

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Nachtmann, Florian, Vogel, Felix, Ruder, Willi
• Primary Examiner(s): Hodge, Robert W
• Assistant Examiner(s): Dodd, Ryan P
• Application Number:
  US14/651,961
• Publication Number:
  US 20150330460A1
• Time in Patent Office: 1,694 Days
• CPC Class Codes: F16D 13/757 the adjusting device being located on or inside the clutch cover, e.g. acting on the diaphragm or on the pressure plate
• CPC Class Codes: F16D 2023/123 Clutch actuation by cams, ramps or ball-screw mechanisms
• CPC Class Codes: F16D 28/00 Electrically-actuated clutches arrangements for synchronisation F16D23/02; clutches actuated directly by means of an electromagnet F16D27/00; automatic clutches F16D43/00 - F16D45/00; external control F16D48/00

Abstract

A clutch device comprising a counterplate, a pressure plate displaceable to a limited extent in an axial direction to frictionally clamp a clutch disc between the pressure plate and the counterplate, a lever element acting on the pressure plate to displace the pressure plate in an axial direction, a central flange at least partially disposed between the pressure plate and the lever element and having at least one opening for the pressure plate and/or the lever element to pass through, and a wear compensation device for automatically adapting to clutch wear, wherein to prevent any undesired wear compensation, the lever element is engageable with the central flange.

Claims

1. A clutch device for an internal combustion engine of a hybrid vehicle, comprising:

a counterplate;

a clutch disc including at least one friction lining;

a pressure plate displaceable in a first axial direction to frictionally clamp the clutch disc between the pressure plate and the counterplate;

a ring-shaped lever element including at least one finger, the ring-shaped lever element operatively arranged to displace the pressure plate in the first axial direction;

a central flange including a protruding section, the central flange at least partially disposed between the pressure plate and the lever element and having at least one opening for the pressure plate to pass through;

a wear compensation device for automatically compensating for clutch wear, including an adjustment ring arranged to rotate and displace in the first axial direction to contact the ring-shaped lever element when the thickness of the at least one friction lining decreases; and

,

an actuating device arranged to displace the ring-shaped lever element in the first axial direction and in a second axial direction opposite the first axial direction;

wherein, to prevent any undesired wear compensation, the protruding section is arranged to limit an axial displacement of the at least one finger in the first axial direction.

2. The clutch device recited in claim 1, wherein the actuating device comprises a stator device, a rotor device rotatable relative to the stator device, and a slide device that is displaceable in an axial direction relative to the rotor device, applies pull and push forces, and is in operative connection with a pull and push device applying pull and push forces onto the at least one finger.

3. The clutch device recited in claim 2, wherein the pull and push device has at least one recess through which the at least one finger is engageable with the protruding section.

4. The clutch device recited in claim 2, wherein the actuating device is supported for rotation on the central flange by a central bearing.

5. The clutch device recited in claim 2, wherein the pull and push device includes at least one pull element and at least one push element connectable to each other and wherein the at least one finger is receivable between the at least one pull element and the at least one push element.

6. The clutch device recited in claim 5, wherein the at least one pull element has at least one recess through which the at least one finger is engageable with the protruding section.

7. The clutch device recited in claim 5, wherein the at least one pull element and the at least one push element are detachably connected to each other.

8. The clutch device recited in claim 5, wherein the at least one pull element and the at least one push element are detachably connected by means of multiple screw-sleeve connections distributed in a circumferential direction.

9. The clutch device recited in claim 8, wherein the at least one pull element has multiple recesses distributed in the circumferential direction through which the lever element is engageable with the central flange and which are disposed between the multiple screw-sleeve connections.

10. The clutch device recited in claim 2, wherein a rolling body screw drive including at least three coils and a rolling body revolution track with rolling bodies running in a rolling body channel is provided between the rotor device and the slide device, wherein the rolling body channel has a track changing region designed in such a way that before the track changing region as viewed in a circumferential direction, rolling bodies run between a first coil and a second coil and behind the track changing region as viewed in the circumferential direction, rolling bodies run between the second coil and a third coil.

11. The clutch device recited in claim 1, wherein the actuating device comprises a stator device, a rotor device rotatable relative to the stator device, and a slide device that is displaceable in an axial direction relative to the rotor device, applies pull and push forces, and is in operative connection with a pull and push device applying pull and push forces onto the at least one finger.