Reduced drag clutch plate

Patent metadata

Field	Value
Publication number	US-10487885-B2
Application number	US-201615557227-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 13, 2015
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A clutch plate includes an annular body having inner and outer diameters and first and second parallel surfaces extending therebetween; and an integral resilient portion connected to the annular body by a first circumferentially extending tab and including third and fourth parallel surfaces extending at respective acute angles to the first and second parallel surfaces; and, wherein the resilient portion fourth surface includes an edge including the outer diameter; and an axial distance of the edge is greater than a thickness of the annular body when measured from the first surface.

First claim

What we claim is:

1. A clutch plate comprising:
an axis of rotation;
an annular body with inner and outer diameters and first and second parallel surfaces extending therebetween;
an inner portion including:
the first and second parallel surfaces;
a continuous inner circumferential surface, connecting the first and second parallel surfaces, disposed at a first radial distance relative to the axis of rotation and;
an upper circumferential edge disposed at a second radial distance relative to the axis of rotation, wherein the second radial distance is greater than the first radial distance; and,

an outer portion including:
third and fourth parallel surfaces, wherein the first and third surfaces are not parallel;
first and second circumferentially extending tab portions arranged for connecting the third and fourth parallel surfaces to the first and second parallel surfaces, respectively;
a lower circumferential edge;
an outer circumferential edge disposed at a third radial distance relative to the axis of rotation, where the third radial distance is greater than the second radial distance, and wherein the outer diameter is disposed at a radial distance equal to the third radial distance; and,

a slot disposed between the upper edge and the lower edge.

2. A clutch plate comprising:
an annular body having inner and outer diameters and first and second parallel surfaces extending therebetween; and,
a plurality of alternating first and second circumferential sections,
each first circumferential section having a first portion including the first and second parallel surfaces, the outer diameter, and the inner diameter including a plurality of notches arranged to form spline teeth;
each second circumferential section having a second portion including the first and second parallel surfaces and wherein the inner diameter is substantially devoid of notches; and a third portion, radially outward from the second portion and integral with the outer diameter, including third and fourth parallel surfaces, wherein the third and fourth parallel surfaces are not parallel to the first and second parallel surfaces, and wherein the third portion is an integral resilient portion connected to the annular body and including:
first and second circumferentially extending tabs for connecting to the annular body; and
a resilient body portion disposed circumferentially between the first and second circumferentially extending tabs.

3. The clutch plate of claim 2 wherein the first section is of a first circumferential length and the second section is of a second circumferential length, wherein the first circumferential length is at least equal to the second circumferential length.

4. The clutch plate of claim 2 further comprising a wet friction material affixed to the first and third surfaces.

5. The clutch plate of claim 4 further comprising a wet friction material affixed to the second and fourth surfaces.

6. The clutch plate of claim 2 further comprising a circumferential slot disposed radially between the inner and outer diameters and disposed radially between the second portion and the third portion.

7. The clutch plate of claim 2 wherein the first and second parallel surfaces of the annular body include a thickness therebetween; and wherein the third portion includes first and second opposing corners having an axial width therebetween; and wherein the axial width is greater than the thickness.

8. The clutch plate of claim 7 wherein the outer diameter includes the second corner.

9. A clutch pack comprising:
first and second pressure plates; and,
the clutch plate of claim 2 disposed therebetween; wherein:
one of the first or second pressure plates, or the clutch plate, includes a radially outer spline;
the other of the first or second pressure plates, or the clutch plate, includes a radially inner spline; and,
the third portion is arranged to be deflectable by the first and second pressure plates.

Assignees

• Schaeffler Technologies Ag

Inventors

• Lindemann Patrick
• Smith David
• Bauman Jeremiah

Classifications

• F16D13/69

  Arrangements for spreading lamellae in the released state · CPC title

• F16D13/68 Primary

  Attachments of plates or lamellae to their supports {(one or more discs connected to the linings transmitting torque to one or more discs connected to the hub by helical springs in windows in the discs, i.e. rotary vibration dampers F16F15/12)} · CPC title

• F16D13/648 Primary

  for clutches with multiple lamellae · CPC title

• F16D13/64

  Clutch-plates; Clutch-lamellae (brake-plates, brake-lamellae F16D65/12) · CPC title