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US 12,549,064 B2Granted
Transmission and electric drive device including the same
AssigneeHl Mando Corporation
InventorKyungtack Lee
Life of this patent
Estimating the term…
Abstract
A transmission, which is accommodated in a housing in which a space is formed and includes a first gear rotated by a driving force provided by an electric motor, a rotary shaft to which the first gear is coupled, a second gear formed on an outer circumferential surface of the rotary shaft and having a diameter smaller than a diameter of the first gear, and a third gear engaged with the second gear and having a diameter greater than the diameter of the second gear, wherein the rotary shaft includes a support configured to support an axial load of the third gear, can be provided.
Claims10
An electric drive device comprising:
- a housing in which a space is formed;
- an electric motor disposed at one side of the housing;
- a transmission configured to reduce a driving force generated by the electric motor;
- and
- a differential assembly to which output power of the transmission is transmitted,
- wherein the transmission includes a first gear, a second gear, and a third gear formed of helical gears sequentially engaged with each other, and
- supports each configured to support an axial load of the third gear are formed on both sides of the second gear, and
- the electric drive device further comprising a parking unit configured to restrict rotation of the support,
- wherein the parking unit includes:
- an actuator;
- a transmitter configured to transmit power provided from the actuator;
- and
- a parking shaft moved by the transmitter so that a part of the parking shaft is inserted into the support.
10 more elements
Dependencies are inferred from the claim text.