Liner support disc for a clutch friction wheel, especially for a

Details Liner support disc for a clutch friction wheel, especially for a Liner support disc for a clutch friction wheel, especially for a

1995-07-10

1998-08-18

Marmor, Charles A.

192 clutches and power-stop control

Elements

Engaging surfaces

192 526, F16D 1364

Patent

active

057947546

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
The present invention relates to a liner support disc for inclusion in a clutch friction wheel, especially for a motor vehicle, of the kind comprising a central portion and a peripheral portion divided into radial blades which are adapted to receive two friction liners, which may be of a divided type and which extend on either side of the said peripheral portion, with each of the said blades being joined to the said central portion through a foot portion comprising at least one support zone generally parallel to the plane of the said central portion, for contact with at least one of the said friction liners and for the fastening of the latter.
2. Description of the Prior Art
In order to create a new standard liner support disc which is able to rotate at increased speeds, while giving a reduction in embedding and juddering effects, and enabling the adoption of a conical shape to take place, it has been proposed in U.S. Pat. No. 5,452,783 corresponding to the European Application 0 579 554 filed on 15 Jul. 1993 to provide a liner support disc which includes tripod blades.
More precisely, in that document, in order to define blades of the tripod type, at least some of the said blades, referred to as tripod blades, have a central support zone for contact with one of the friction liners and for the fastening of the latter, and two peripheral support zones on either side of the said central zone, for contact with the other one of the said friction liners.
The central support zone decreases in width going towards the outer periphery of the liner support disc, and is offset axially with respect to the central portion and to both of the said peripheral support zones.
The central support zone is joined, firstly to the central portion of the liner support disc through a tangential bent portion at right angles to the radial axis of symmetry of the said tripod blades, and secondly to the said peripheral zones through peripheral bent portions which are oblique with respect to the radial axis of symmetry of the said tripod blades.
Thanks to this arrangement, it is possible to increase the support surfaces and also the number of blades, and to enlarge the central support zone to a very large circumferential width, so that the foot portions of the blades have a very great width and are robust.
In this way, it is possible to have contact surfaces greater than 25% of the total surface area of the back of the liner when the latter is continuous, and the distance between two central support zones is reduced.
As a result, embedding effects, due to embedding of the friction liner within pits existing between two engagement surfaces, are reduced, especially when friction liners of the organic type are employed.
The liner support disc is able to turn at increased speeds of rotation, by being more resistant to the effects of centrifugal force.
Judder effects (brought about by vibrations that occur within the propulsion train going from the engine to the road wheels), which occur just as much at low torques, during a parking manoeuvre or in the garage, as at high torques during gear changes while travelling or during a hill start, are reduced.
This liner support disc enables wear in the friction liners to be reduced, and due to the configuration of the blade it is able to follow the tendency of the pressure plate of the clutch to adopt a conical shape.
An object of the present invention is to make further use of these blades of the tripod type.


SUMMARY OF THE INVENTION

In accordance with the invention, the friction liner is attached directly by adhesion on the central support zones associated with it.
Because of this arrangement, it is possible to reduce even further the inertia of the liner support disc, and the latter is able to turn at even higher speeds of rotation.
In this connection, the friction liners now have only the useful thickness, and no excess thickness need be provided as in the case of riveted fastening.
This is made possible due to the central support zones,

REFERENCES:
patent: 2566394 (1951-09-01), Zeidler
patent: 4108699 (1978-08-01), de Gennes
patent: 5076409 (1991-12-01), Graton et al.
patent: 5452783 (1995-09-01), Thirion de Briel et al.
patent: 5522490 (1996-06-01), Thirlon de Briel et al.

Affiliated with

Also associated with

Rating

Liner support disc for a clutch friction wheel, especially for a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Liner support disc for a clutch friction wheel, especially for a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liner support disc for a clutch friction wheel, especially for a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1107370