Electric drive unit
AssigneeSchaeffler Technologies AG & Co. KG
InventorKyle Nelson
Life of this patent
Estimating the term…
Abstract
An electric drive unit includes: a motor that rotates a rotor shaft; a housing with a bearing shield extending between motor housing and gearbox regions, the bearing shield having a first side that faces toward the motor housing region and a second side that partially defines the gearbox region and along which a channel extends; a planetary gearset including a sun gear, planet gears, and a carrier; and a wiper coupled to the housing proximate to the channel and abutting the carrier, such that fluid is wiped off of the carrier by the wiper as the carrier rotates and flows to the channel therefrom.
Claims20
An electric drive unit, comprising:
- a motor that drives rotation of a rotor shaft;
- a housing that includes a bearing shield that extends between a motor housing region that houses the motor and a gearbox region, the bearing shield having a first side that faces toward the motor housing region and a second side opposite the first side that partially defines the gearbox region and along which a channel extends;
- a planetary gearset disposed within the gearbox region and including a sun gear operably coupled with the rotor shaft such that the sun gear and the rotor shaft are configured to rotate together at a common rate of rotation about an axis, a plurality of planet gears that interface with the sun gear and are configured to revolve around the axis, and a carrier that is operably coupled with the plurality of planet gears, such that revolution of the planet gears rotates the carrier about the axis;
- and
- a wiper coupled to the housing proximate to the channel and configured to abut the carrier, such that fluid is wiped off of the carrier by the wiper as the carrier rotates and flows to the channel therefrom.
An electric drive unit, comprising:
- a motor that drives rotation of a rotor shaft;
- a housing that includes a bearing shield that extends between a motor housing region that houses the motor and a gearbox region, the bearing shield having a first side that faces toward the motor housing region and a second side opposite the first side that partially defines the gearbox region and along which a channel extends;
- and
- a gearset disposed within the gearbox region and operably coupled with the rotor shaft, such that rotation of the rotor shaft causes the gearset to splash fluid that is within the gearbox region onto the second side of the bearing shield above the channel, wherein gravity draws the fluid downward along the second side of the bearing shield and into the channel.
An electric drive unit, comprising:
- a motor that drives rotation of a rotor shaft;
- a planetary gearset operably coupled with the rotor shaft and having a carrier;
- a housing that houses the motor and planetary gearset;
- and
- a wiper coupled to the housing and configured to wipe fluid off of the carrier as the carrier rotates.
Dependencies are inferred from the claim text.