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US 10,378,613 B1Granted
Electric powertrain with cycloidal mechanism
AssigneeSchaeffler Technologies AG & Co. KG
InventorsBrian Lee, Peter Burke, Guihui Zhong
Life of this patent
Estimating the term…
Abstract
An electric powertrain for a vehicle includes a cycloidal speed reducer having an input member configured to couple with a traction motor, a cycloidal disc defining a plurality of circumferentially arranged holes, and a plurality of circumferentially arranged pins each disposed in one of the holes. A differential of the vehicle has a case connected to each of the pins. The differential may be a cycloidal differential.
Claims18
An electric powertrain for a vehicle comprising:
- a cycloidal speed reducer including an input member configured to couple with a traction motor, a cycloidal disc defining a plurality of circumferentially arranged holes, and a plurality of circumferentially arranged pins each disposed in one of the holes;
- and
- a cycloidal differential including a case connected to each of the pins.
An electric powertrain for a vehicle comprising:
- a traction motor including a stator, a rotor, and an output shaft fixed to the rotor;
- and
- a cycloidal speed reducer coupled to the traction motor and including:
- a ring-pin assembly rotationally fixed with the stator, encircling the output shaft, and having a plurality of circumferentially arranged ring pins,
- an eccentric cam received on the output shaft, and
- a cycloidal disc defining a central hole that receives the eccentric cam and a plurality of lobes circumferentially arranged around an outer surface of the disc and configured to engage with the ring pins;
- and
- a cycloidal differential having a case rotationally coupled to the cycloidal disc.
5 more elements
An electric axle comprising:
- a traction motor including a motor output shaft;
- a cycloidal speed reducer coupled to the motor output shaft and including a cycloidal disc configured to have an eccentric, cycloidal motion that rotates slower than the motor output shaft;
- and
- a cycloidal differential including a case connected to the cycloidal disc and first and second differential output shafts.
1 more element
Dependencies are inferred from the claim text.