Friction element for a frictional shifting element for a vehicle transmission
AssigneeZF Friedrichshafen AG
InventorsMatthias Reisch, Christian Sibla
Life of this patent
Estimating the term…
Abstract
A friction element (1, 3) for a frictional shift element for a transmission of a vehicle, the friction element having an annular base body with a plurality of friction surface elements (5), the plurality of friction surface elements (5) protruding radially inwardly or radially outwardly and are distributed over a periphery of the annular base body. The friction element (1, 3) and the plurality of friction surface elements (5) are each formed as one piece.
Claims15
A friction element (1, 3) for a frictional shift element for a transmission of a vehicle, comprising:
- an annular base body defining a plurality of recesses (16) distributed over a periphery of the annular base body;
- and
- a plurality of friction surface elements (5), each of the plurality of friction surface elements (5) being received in a respective one of the plurality of recesses (16) such that the plurality of friction surface elements (5) protrude radially inwardly or radially outwardly from the annular base body,
- wherein the annular base body and the plurality of friction surface elements (5) are each formed as one piece, and
- wherein each of the plurality of friction surface elements (5) is fixed to the annular base body.
A method for producing a friction element (1, 3) for a frictional shift element for a transmission of a vehicle, the friction element (1, 3) having an annular base body and a plurality of friction surface elements (5), the plurality of friction surface elements (5) being distributed over a periphery of the annular base body and protruding radially inwardly or radially outwardly from the periphery, said method comprising:
- manufacturing the annular base body from a first material in a first step (110);
- manufacturing a plurality of recesses (16) in a second step (120), the plurality of recesses (16) distributed on the annular base body along an inner circumference or an outer circumference of the annular base body;
- manufacturing the plurality of friction surface elements (5) in a third step (130), each of the plurality of friction surface elements (5) being formed as one piece from the first material or a second material in the third step (130), each of the plurality of friction surface elements (5) being receivable within a respective one of the plurality of recesses (16);
- and
- joining each of the plurality of friction surface elements (5) to the annular base body at the respective one of the plurality of recesses (16) in a fourth step.
Dependencies are inferred from the claim text.