Disk, disk clutch with such a disk, double clutch device with such a disk clutch, and method for producing a disk

Patent metadata

Field	Value
Publication number	US-11047427-B2
Application number	US-201815914476-A
Country	US
Kind code	B2
Filing date	Mar 7, 2018
Priority date	Mar 8, 2017
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

The disclosure relates to a disk ( 38 ) for a disk clutch ( 26 ) comprising an annular base element ( 76 ) which has a toothing ( 78 ) with multiple teeth ( 80 ) for achieving a rotary driving engagement with a disk carrier ( 34 ), wherein the base element ( 76 ) has at least one hardened region ( 96 ) in which the base element ( 76 ) is designed as harder than in the tooth flank regions ( 98, 100 ) of the teeth ( 80 ). In addition, the disclosure relates to a disk clutch ( 26 ) with such a disk ( 38 ), a double clutch device ( 2 ) with such a disk clutch ( 26 ), and a method for producing such a disk ( 38 ).

First claim

The invention claimed is:

1. A disk ( 38 ) for a disk clutch ( 26 ) comprising an annular base element ( 76 ) which has a toothing ( 78 ) with multiple teeth ( 80 ) for achieving a rotary driving engagement with a disk carrier ( 34 ), characterized in that the base element ( 76 ) has at least one hardened region ( 96 ) in which the base element ( 76 ) is designed as harder than in tooth flank regions ( 98 , 100 ) of the teeth ( 80 ) and characterized in that the hardened region ( 96 ) is arranged at a distance (b) to the tooth flanks ( 90 , 92 ) of the teeth ( 80 ), wherein the distance (b) is at least 3 mm.

2. The disk ( 38 ) according to claim 1 , characterized in that the hardened region ( 96 ) is arranged in a distance (a) to the tooth roots of the teeth ( 80 ), wherein the distance (a) is at least 3 mm.

3. The disk ( 38 ) according to claim 1 , characterized in that the toothing ( 78 ) is an external toothing.

4. The disk ( 38 ) according to claim 1 , characterized in that the base element ( 76 ) is surface hardened in the hardened region ( 96 ) using gas nitriding gas nitrocarburizing plasma nitriding, or plasma nitrocarburizing.

5. A disk clutch ( 26 ) with at least one disk ( 38 ) according to claim 1 , wherein the disk ( 38 ) is in rotary driving engagement via the toothing ( 78 ) with a disk carrier ( 34 ), wherein the toothing ( 78 ) is softer than the base element ( 76 ) in the hardened region ( 96 ), or has the same hardness as the tooth flank region ( 98 , 100 ).

6. A double clutch device ( 2 ) for arranging in a drivetrain between a drive unit ( 18 ) and a transmission ( 20 ), having a first disk clutch ( 26 ) assigned to a first transmission input shaft ( 22 ) for selective torque transmission between the drive unit ( 18 ) and the first transmission input shaft ( 22 ) and a second disk clutch ( 28 ) assigned to a second transmission input shaft ( 24 ) for selective torque transmission between the drive unit ( 18 ) and the second transmission input shaft ( 24 ), characterized in that the double clutch device ( 2 ) is designed as a concentric double clutch device ( 2 ) and only the first disk clutch ( 26 ) which is a radially outer disk clutch of the double clutch device ( 2 ) is designed as the disk clutch ( 26 ) according to claim 5 .

7. A method for producing a disk ( 38 ) according claim 1 comprising the method steps:
providing an annular base element ( 76 ) which has a toothing ( 78 ) with multiple teeth ( 80 ),
covering at least the tooth flank regions ( 98 , 100 ) of the toothing ( 78 ), and
surface hardening the base element ( 76 ) using gas nitriding, gas nitrocarburizing, plasma nitriding, or plasma nitrocarburizing to create at least one hardened region ( 96 ), in which the base element ( 76 ) is designed as harder than in the tooth flank regions ( 98 , 100 ) of the toothing ( 78 ).

8. The disk ( 38 ) according to claim 1 , characterized in that the teeth ( 80 ) are hardened to achieve a lower hardness than in the hardened region ( 96 ), or are unhardened in contrast to the hardened region ( 96 ).

9. The disk ( 38 ) according to claim 1 , characterized in that the base element ( 76 ) is manufactured or made from metal or steel, and the disk ( 38 ) is designed as a disk ( 38 ) without a friction lining or is designed as a steel disk.

10. The disk clutch ( 26 ) with at least one disk ( 38 ) according to claim 5 , wherein the toothing ( 78 ) is not hardened, not nitrided, and not nitrocarburized.

Assignees

• Borgwarner Inc
• Porsche Ag
• Zahnradfabrik Friedrichshafen
• Borgwamer Inc

Inventors

• Nikola Patrick Carsten
• Gerlach Martin
• Seufert Jochen Alois Rudoff
• Halm Christian Bernhard
• Obergasser Michael
• Pelzer Alen
• Reisser Wolfgang
• Krueger Arne
• Winterhalder Steffen
• Lautenschlager Dirk Oliver
• Funk Michael
• Bofinger Gerd

Classifications

• F16D2021/0661

  Hydraulically actuated multiple lamellae clutches · CPC title

• F16D25/10 Primary

  Clutch systems with a plurality of fluid-actuated clutches (arrangements or mounting of clutches in vehicles B60K17/00) · CPC title

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• F16D2250/0053

  Hardening · CPC title

• F16D13/52

  Clutches with multiple lamellae {; Clutches in which three or more axially moveable members are fixed alternately to the shafts to be coupled and are pressed from one side towards an axially-located member (F16D13/385 takes precedence)} · CPC title