Rotating clutch pack assembly

Patent metadata

Field	Value
Publication number	US-2016160934-A1
Application number	US-201615043778-A
Country	US
Kind code	A1
Filing date	Feb 15, 2016
Priority date	Mar 4, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A transmission having a rotating clutch pack assembly is provided, The rotating clutch pack having an interconnecting member, a plurality of friction discs, a rotating member, a first and a second axial bearing, and a biasing member. The interconnecting member is connected for common rotation with a member of the planetary gear set. The rotating member is connected to the second set of friction discs for common rotation. The first axial bearing is disposed between the clutch piston and the plurality of friction discs and the second axial bearing is disposed between the plurality of friction discs and the transmission housing. The biasing member is disposed between the interconnecting member and the rotating member. A clutch piston selectively applies an axial force through the first axial bearing, the plurality of friction discs, and the second axial bearing to the transmission housing.

First claim

What is claimed is:

1 . A rotating clutch assembly for a transmission, the rotating clutch assembly including;
a clutch piston disposed in a clutch piston chamber of a housing of the transmission; a first and second rotating member, each of the first and second rotating members having a first splined portion, a first and a second set of friction discs, and wherein the first set of friction discs is interweaved with the second set of friction discs, the first set of friction discs is connected for common rotation with the first splined portion of the first rotating member, and the second set of friction discs is connected for common rotation with the first splined portion of the second rotating member; and a first and a second axial bearing, and wherein the first axial bearing is disposed between the clutch piston and the first and second sets of friction discs and the second axial bearing is disposed between the first and second sets of friction discs and the housing of the transmission, and wherein the clutch piston selectively applies an axial force through the first axial bearing, the plurality of friction discs, and the second axial bearing to the housing of the transmission.

2 . The rotating clutch assembly of claim 1 further including a third rotating member and a biasing member, and wherein the third rotating member is connected for common rotation with the second rotating member, the biasing member is disposed between the second rotating member and the third rotating member, and the biasing member applies a biasing force on the second rotating member in an axial direction away from the third rotating member.

3 . The rotating clutch assembly of claim 2 wherein the an outer periphery of the third rotating member includes a splined surface, and wherein the splined surface of the third rotating member is engaged with a second splined portion of the second rotating member for common rotation.

4 . The rotating clutch assembly of claim 3 wherein the second splined portion of the second rotating member includes a first groove, the splined surface of the outer periphery of the third rotating member includes a second groove aligned with the first groove forming an annular channel, and the biasing member is disposed in the annular channel.

5 . The rotating clutch assembly of claim 1 wherein the housing of the transmission includes an axially facing bearing surface and the second axial bearing is disposed between the bearing surface of the housing of the transmission and the rotating member.

6 . The rotating clutch assembly of claim 5 wherein the second axial bearing is disposed on the axially facing bearing surface of the housing of the transmission.

7 . The rotating clutch assembly of claim 3 wherein the second rotating member includes an annular channel disposed adjacent the second splined portion, the annular channel includes an axial facing surface, the second axial bearing is disposed between the housing of the transmission and the axial facing surface of the annular channel, and the second splined portion includes a radial groove in which is disposed a snap ring.

8 . The rotating clutch assembly of claim 7 wherein the second rotating member includes an axial facing biasing surface disposed between the second splined portion and the annular channel of the second rotating member, the biasing member is a leaf spring having an inner periphery fixed to the third rotating member and an outer periphery in contact with the biasing surface of the second rotating member, and the third member is further disposed between the snap ring and the leaf spring thus ensuring a gap between the second axial bearing and the transmission housing and ensuring the position of the second rotating member thus having a second rotating member axis of rotation coaxial with the axis of rotation of the first and third rotating members.

9 . The rotating clutch assembly of claim 8 wherein the second axial bearing is disposed in the annular channel of the second rotating member.

10 . The rotating clutch assembly of claim 1 wherein the first axial bearing is disposed on an axial contact surface of the clutch piston.

11 . The rotating clutch assembly of claim 2 wherein the second rotating member includes an axial facing biasing surface disposed between the second splined portion and the first splined portion of the second rotating member and the biasing member is a spring plate having an inner periphery in contact with the interconnecting member and an outer periphery in contact with the biasing surface of the rotating member.

12 . A rotating clutch assembly for a transmission, the rotating clutch assembly including;
a clutch piston disposed in a clutch piston chamber of a housing of the transmission; a first, second, and third rotating member, each of the first, second, and third rotating members having a first splined portion, the second rotating member has a second splined portion, and wherein the first splined portion of the third rotating member is connected for common rotation with the second splined portion of the second rotating member; a first and a second set of friction discs, and wherein the first set of friction discs is interweaved with the second set of friction discs, the first set of friction discs is connected for common rotation with the first splined portion of the first rotating member, and the second set of friction discs is connected for common rotation with the first splined portion of the second rotating member; and a first and a second axial bearing, and wherein the first axial bearing is disposed between the clutch piston and the first and second sets of friction discs and the second axial bearing is disposed between the first and second sets of friction discs and the housing of the transmission, and wherein the clutch piston selectively applies an axial force through the first axial bearing, the plurality of friction discs, and the second axial bearing to the housing of the transmission.

13 . The rotating clutch assembly of claim 12 further including a biasing member, and wherein the biasing member is disposed between the second rotating member and the third rotating member, and the biasing member applies a biasing force on the second rotating member in an axial direction away from the third rotating member.

14 . The rotating clutch assembly of claim 13 wherein the second splined portion of the second rotating member includes a first groove, the first splined surface of the third rotating member includes a second groove aligned with the first groove forming an annular channel, and the biasing member is disposed in the annular channel.

15 . The rotating clutch assembly of claim 12 wherein the housing of the transmission includes an axially facing bearing surface and the second axial bearing is disposed between the bearing surface of the housing of the transmission and the rotating member.

16 . The rotating clutch assembly of claim 15 wherein the second axial bearing is disposed on the axially facing bearing surface of the housing of the transmission.

17 . The rotating clutch assembly of claim 13 wherein the second rotating member includes an annular channel disposed adjacent the second splined portion, the annular channel includes an axial facing surface, the second axial bearing is disposed between the housing of the transmission and the axial facing surface of the annular channel, and the second splined portion includes a radial groove in which is disposed a snap ring.

18 . A rotating clutch assembly for a transmission,

Assignees

• Gm Global Tech Operations Inc

Inventors

• Singh Tejinder
• Burgman Boris
• Diemer John A

Classifications

• F16H2057/0216

  Intermediate shaft supports, e.g. by using a partition wall · CPC title

• F16H2045/005

  comprising a clutch between fluid gearing and the mechanical gearing unit · CPC title

• F16H57/10

  Braking arrangements · CPC title

• F16H45/00 Primary

  Combinations of fluid gearings for conveying rotary motion with couplings or clutches  (gearing systems consisting of a plurality of hydrokinetic units operating alternatively F16H41/22) · CPC title

• F16H3/666

  with intermeshing orbital gears (F16H3/663 takes precedence) · CPC title