Clutch pack having axial softness introduced in a specific manner

Patent metadata

Field	Value
Publication number	US-11415181-B2
Application number	US-201917261050-A
Country	US
Kind code	B2
Filing date	Jun 12, 2019
Priority date	Aug 6, 2018
Publication date	Aug 16, 2022
Grant date	Aug 16, 2022

Abstract

A clutch pack for a clutch in a drive train of a motor vehicle includes an axis defining an axial direction and a disk, rotatable about the axis, for contacting a counter-disk to transfer a torque. The disk includes a main body with a contact region for absorbing torque from or transferring a torque to the counter-disk, a toothed region for torque-transmitting contact with a disk carrier, and a region of specific elastic softness in the axial direction disposed between the contact region and the toothed region. In an example embodiment, the region of specific elastic softness in the axial direction is a steel sheet spring region.

First claim

The invention claimed is:

1. A clutch pack for a clutch in a drive train of a motor vehicle, comprising:
an axis defining an axial direction;
a disk, rotatable about the axis, for contacting a counter-disk to transfer a torque, the disk comprising:
a main body comprising a contact region for absorbing torque from or transferring a torque to the counter-disk;
a toothed region comprising:
a plurality of circumferentially arranged sections, each comprising a plurality of individual teeth, evenly distributed over a circumference, and
a plurality of arcuately shaped portions, devoid of teeth, arranged between respective pairs of the plurality of circumferentially arranged sections; and

an axially flexible region disposed between the contact region and the toothed region.

2. The clutch pack of claim 1 , wherein the axially flexible region is a steel sheet spring region.

3. The clutch pack of claim 2 , wherein the steel sheet spring region:
is an integral part of the main body; or
is attached to the main body as a separate component.

4. The clutch pack of claim 2 , wherein the steel sheet spring region is a leaf spring or corrugated spring.

5. The clutch pack of claim 2 , further comprising a radial gap formed between the contact region and the steel sheet spring region.

6. The clutch pack of claim 2 , wherein the toothed region is formed integrally with the steel sheet spring region.

7. The clutch pack of claim 2 , wherein:
the toothed region is formed integrally with the steel sheet spring region and separately from the main body;
the main body comprises a plurality of radially extending arms;
the steel sheet spring region comprises a plurality of mounting regions, each arranged radially outside of a one of the plurality of arcuately shaped portions; and
the radially extending arms are fixed to respective ones of the plurality of mounting regions.

8. The clutch pack of claim 7 wherein a quantity of mounting regions in the plurality of mounting regions is equal to a quantity of circumferentially arranged sections in the plurality of circumferentially arranged sections.

9. The clutch pack of claim 8 further comprising a plurality of disks stacked together and arranged such that the rivets on each disk in the plurality of disks are circumferentially aligned with the plurality of circumferentially arranged sections on an axially adjacent disk in the plurality of disks.

10. The clutch pack of claim 7 wherein the radially extending arms are fixed to respective ones of the plurality of mounting regions by rivets.

11. The clutch pack of claim 1 , wherein the main body comprises a radially extending arm.

12. The clutch pack of claim 1 , wherein the toothed region is radially inside of the contact region.

13. A hybrid module comprising a clutch, wherein the clutch comprises the clutch pack of claim 1 .

Assignees

• Schaeffler Technologies Ag

Inventors

• Finkenzeller Marc

Classifications

• F16D2013/642

  with resilient attachment of frictions rings or linings to their supporting discs or plates for allowing limited axial displacement of these rings or linings · CPC title

• F16D13/69 Primary

  Arrangements for spreading lamellae in the released state · CPC title

• F16D13/585

  Arrangements or details relating to the mounting or support of the diaphragm on the clutch on the clutch cover or the pressure plate · 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

• F16D13/683 Primary

  for clutches with multiple lamellae · CPC title