Decelerating device for electric motor
AssigneeHonda Motor Co., Ltd.
InventorShigeru KOYAMA
Life of this patent
Estimating the term…
Abstract
The decelerating device according to the disclosure includes first and second planetary gear mechanisms arranged in an inner space of a hollow type electric motor having an annular rotor. The first planetary gear mechanism includes a first ring gear integral with the rotor, a non-rotatable first carrier for supporting a first pinion gear engaged with the first ring gear to be rotatable, and a first sun gear engaged with the first pinion gear. The second planetary gear mechanism includes a second ring gear integral with the rotor, a second carrier supporting a second pinion gear engaged with the second ring gear to be rotatable and connected to the output shaft, and a second sun gear engaged with the second pinion gear and connected to the first sun gear.
Claims6
A decelerating device for an electric motor,
- the decelerating device outputting power from an output shaft in a state in which power of the electric motor is decelerated,
- the electric motor being configured as a hollow type electric motor having an annular rotor,
- in an inner space of the electric motor, a first planetary gear mechanism and a second planetary gear mechanism being arranged coaxially with the output shaft and parallel to each other in an axial direction, wherein
- the first planetary gear mechanism comprises:
- a first ring gear which is disposed integrally to the rotor of the electric motor;
- a first carrier which is not rotatable and supports a first pinion gear engaged with the first ring gear to be rotatable;
- and
- a first sun gear which is rotatable and engaged with the first pinion gear, and the second planetary gear mechanism comprises:
- a second ring gear which is disposed integrally to the rotor of the electric motor;
- a second carrier which supports a second pinion gear engaged with the second ring gear to be rotatable and is connected to the output shaft;
- and
- a second sun gear which is engaged with the second pinion gear and connected to the first sun gear.
A decelerating device for an electric motor,
- the decelerating device outputting power from an output shaft in a state in which power of the electric motor is decelerated,
- the electric motor being configured as a hollow type electric motor having an annular rotor,
- in an inner space of the electric motor, a first planetary gear mechanism and a second planetary gear mechanism being arranged coaxially with the output shaft and parallel to each other in an axial direction, wherein
- the first planetary gear mechanism comprises:
- a first ring gear which is not rotatable;
- a first carrier which supports a first pinion gear engaged with the first ring gear and a second pinion gear engaged with the first pinion gear to be rotatable and is disposed integrally to the rotor of the electric motor;
- and
- a first sun gear which is rotatable and engaged with the second pinion gear, and the second planetary gear mechanism comprises:
- a second ring gear which is disposed integrally to the rotor of the electric motor;
- a third pinion gear which is engaged with the second ring gear;
- a second carrier which supports the third pinion gear to be rotatable and is connected to the output shaft;
- and
- a second sun gear which is engaged with the third pinion gear and is connected to the first sun gear.
Dependencies are inferred from the claim text.