Rotor carrier and locking diaphragm spring
AssigneeSchaeffler Technologies AG & Co. KG
InventorJustin Persinger
Life of this patent
Estimating the term…
Abstract
A hybrid drive module, comprising an annular diaphragm spring having an inner surface and one or more fingers protruding radially inward from the inner surface and a carrier hub concentric with the diaphragm spring and connected to a rotor of an electric motor and a cover of a torque converter, the carrier hub having an outer surface with one or more retention grooves configured to interlock with the one or more fingers of the diaphragm spring to inhibit axial movement of the diaphragm spring relative to the carrier hub.
Claims16
A hybrid drive module, comprising:
- an annular diaphragm spring having an inner surface and one or more fingers protruding radially inward from the inner surface;
- and
- a carrier hub concentric with the diaphragm spring and connected to a rotor of an electric motor and a cover of a torque converter, the carrier hub having an outer surface with one or more retention grooves configured to interlock with the one or more fingers of the diaphragm spring to inhibit axial movement of the diaphragm spring relative to the carrier hub, wherein the one or more retention grooves are configured to mitigate rotation between the carrier hub and diaphragm spring when the one or more retention grooves are in contact with the one or more fingers, wherein the one or more retention grooves each include a first passageway configured to receive one of the fingers, a second passageway generally perpendicular from the first passageway, and third passageway generally parallel with the first passageway.
A method of interlocking a diaphragm spring and a carrier hub in a hybrid drive module, comprising:
- axially compressing a diaphragm spring in a first direction against the carrier hub such that inwardly-extending fingers of the diaphragm spring are disposed within retention grooves formed in the carrier hub;
- rotating the diaphragm spring about an axis such that the fingers slide along circumferentially extending portions of the retention grooves that include a first and second passageway connected by a third passageway, wherein the first, second, and third passageways extend in different directions to allow the finger to be translated along the retention groove in three different directions;
- and
- releasing the diaphragm spring to enable axial movement of the spring in a second direction.
A carrier hub of a hybrid drive module including a torque converter and an electric motor including a rotor, the carrier hub comprising:
- a carrier hub surface including a retention groove configured to interlock the carrier hub to one or more fingers of a diaphragm spring and inhibit rotation and axial movement of the diaphragm spring relative to the carrier hub, wherein the retention groove includes a first and second passageway connected by a third passageway, wherein the first, second, and third passageways extend in different directions to allow the finger to be translated along the retention groove in three different directions.
Dependencies are inferred from the claim text.