Clutch comprising a double-acting piston, and axially elastic end stop disc for a sliding sleeve

Patent metadata

Field	Value
Publication number	US-2025035168-A1
Application number	US-202218715766-A
Country	US
Kind code	A1
Filing date	Nov 16, 2022
Priority date	Dec 13, 2021
Publication date	Jan 30, 2025
Grant date	—

Abstract

A clutch for selectively coupling a motor and a motor vehicle drive train includes an axis of rotation, a housing including two pressure chambers, a sliding sleeve, an actuating cap arranged for moving the sliding sleeve, a piston and an end stop disc. The piston is arranged in the housing between the two pressure chambers, axially displaceable due to pressure, and connected to the actuating cap. The end stop disc is axially elastic and arranged to limit axial displacement of the sliding sleeve.

First claim

1 . A clutch for coupling and uncoupling a motor to and from a motor vehicle drive train, having a piston which is arranged in a housing between two pressure chambers so as to be axially displaceable due to pressure, wherein the piston is connected to an actuating cap which is arranged for contacting or moving a sliding sleeve, wherein an end stop disc which is designed to be elastic in the axial direction is provided in order to limit the axial displaceability of the sliding sleeve.

2 . The clutch according to claim 1 , wherein the end stop disc has an S-shape or double S-shape in a longitudinal section along the axis of rotation of the clutch.

3 . The clutch according to claim 1 , wherein the end stop disc is mounted in a preloaded manner.

4 . The clutch according to claim 1 , wherein the end stop disc is mounted on a shaft.

5 . The clutch according to claim 1 , wherein the end stop disc is mounted with a preload force between a clutch body arranged for torque connection with the sliding sleeve and a locking ring fixed to a shaft.

6 . The clutch according to claim 5 , wherein the radial extent of the end stop disc is greater than that of the clutch body.

7 . The clutch according to claim 5 , wherein an empty space is enclosed between the end stop disc and the clutch body.

8 . The clutch according to claim 5 , wherein the locking ring is arranged in an axially positionally fixed manner in a groove on the lateral surface of the shaft.

9 . The clutch according to claim 5 , wherein the end stop disc is designed to be at least ten times more elastic in the axial direction than the locking ring or the clutch body.

10 . The clutch according to claim 1 , wherein the sliding sleeve is connected to the actuating cap.

11 . A clutch for selectively coupling a motor and a motor vehicle drive train, comprising:
an axis of rotation; a housing comprising two pressure chambers; a sliding sleeve; an actuating cap arranged for moving the sliding sleeve; a piston:
arranged in the housing between the two pressure chambers;
axially displaceable due to pressure; and
connected to the actuating cap; and
an end stop disc, axially elastic and arranged to limit axial displacement of the sliding sleeve.

12 . The clutch of claim 11 , wherein the end stop disc comprises an S-shape or a double s-shape in a longitudinal section taken along the axis of rotation.

13 . The clutch of claim 11 wherein the end stop disc is installed preloaded.

14 . The clutch of claim 11 , further comprising a shaft, wherein the end stop disc is mounted on the shaft.

15 . The clutch of claim 14 further comprising:
a clutch body arranged for torque connection with the sliding sleeve; and
a locking ring fixed to the shaft, wherein the end stop disc is installed with a preload force between the clutch body and the locking ring.

16 . The clutch of claim 15 , wherein a radial extent of the end stop disc is greater than a radial extent of the clutch body.

17 . The clutch of claim 15 further comprising an empty space enclosed between the end stop disc and the clutch body.

18 . The clutch of claim 15 , wherein:
the shaft comprises a lateral surface with a groove; and the locking ring is arranged in the groove.

19 . The clutch of claim 15 , wherein the end stop disc is at least ten times more elastic in an axial direction than the locking ring or the clutch body.

20 . The clutch of claim 11 , wherein the sliding sleeve is connected to the actuating cap.

Assignees

• Schaeffler Technologies Ag

Inventors

• Erdmann Knut
• Kohler Markus

Classifications

• F16D25/06

  in which the fluid actuates a piston incorporated in, {i.e. rotating with} the clutch (F16D25/02 takes precedence) · CPC title

• F16D25/12 Primary

  Details not specific to one of the before-mentioned types · CPC title

• F16D23/02

  Arrangements for synchronisation, also for power-operated clutches (shape or mounting of interengaging parts of clutch members to facilitate engagement F16D11/08) · CPC title

• F16D11/10

  with clutching members movable only axially · CPC title

• F16D2011/002

  using an external and axially slidable sleeve for coupling the teeth of both coupling components together · CPC title