Shaft structure with adjustment portions for alignment with rotor center of gravity
AssigneeLG Electronics Inc.
InventorsKyeonghwan Kim, Yangsoo Lee, Gyeongjae Park, Hojun Shin, Junho Ahn, Wonjung Sung
Life of this patent
Estimating the term…
Abstract
The embodiments of the present disclosure provide a shaft structure of a motor, comprising a housing, a stator disposed inside the housing, and a rotor rotatably disposed inside the stator. The stator may comprise a stator core and a coil wound around the stator core, and the rotor may comprise a rotor core and a rotational shaft coupled to the rotor core. The rotational shaft may comprise a plurality of adjusting portions formed on an outer circumferential surface of the rotational shaft to align a center of gravity of the rotor with a center of the rotational shaft.
Claims15
A shaft structure of a motor, the structure comprising:
- a housing;
- a stator disposed inside the housing, the stator comprising a stator core and a coil wound around the stator core;
- and
- a rotor rotatably disposed inside the stator, the rotor comprising a rotor core and a rotational shaft coupled to the rotor core,
- wherein the rotational shaft comprises a plurality of adjusting portions formed on an outer circumferential surface of the rotational shaft to align a center of gravity of the rotor with a center of the rotational shaft, wherein:
- the plurality of adjusting portions comprise grooves in a shape of a slot,
- the plurality of adjusting portions are recessed by different volumes relative to each other based on distances from the center of gravity of the rotor,
- one adjusting portion of the plurality of adjusting portions is spaced a first distance from the center of gravity of the rotor,
- another adjusting portion of the plurality of adjusting portions is spaced a second distance from the center of gravity of the rotor, the second distance being greater than the first distance, and
- the one adjusting portion is recessed by a volume greater than that of the another adjusting portion.
A motor comprising:
- a housing having a space;
- a stator disposed in the space of the housing;
- and
- a rotor rotatably disposed inside the stator,
- wherein the rotor comprises a rotor core and a rotational shaft inserted through the rotor core,
- the rotational shaft comprises a plurality of adjusting portions recessed into an outer circumferential surface of the rotational shaft in a radial direction,
- the plurality of adjusting portions are formed by a predetermined length along an axial direction of the rotational shaft, wherein:
- the plurality of adjusting portions are recessed by different widths relative to one another based on distances from a center of gravity of the rotor,
- one adjusting portion of the plurality of adjusting portions is spaced a first distance from the center of gravity of the rotor,
- another adjusting portion of the plurality of adjusting portions is spaced a second distance from the center of gravity of the rotor, the second distance being greater than the first distance, and
- the one adjusting portion is recessed by a width greater than that of the another adjusting portion.
Dependencies are inferred from the claim text.