Motor
AssigneeNidec Corporation
InventorHiroki YAMADA
Life of this patent
Estimating the term…
Abstract
A motor includes a support portion arranged to hold a stator and a bearing. The support portion includes a bearing holding portion arranged to extend upward along a central axis, and arranged to hold the bearing with a radially inner surface thereof; and a stator holding portion being tubular, arranged to project upward from an upper surface of the bearing holding portion, and arranged to hold a radially inner surface of the stator with a radially outer surface thereof. An axially lower portion of the stator holding portion includes a decreased thickness portion where the radial thickness of the stator holding portion is smaller than at another portion of the stator holding portion at another axial position.
Claims10
A motor comprising:
- a shaft arranged to extend along a central axis extending in a vertical direction, and arranged to rotate about the central axis;
- a bearing arranged to rotatably support the shaft;
- a hub fixed to an upper end portion of the shaft;
- a rotor magnet attached to the hub;
- a stator arranged radially opposite to the rotor magnet;
- and
- a support portion arranged to hold the bearing and the stator;
- wherein
- the support portion includes:
- a bearing holding portion arranged to extend upward along the central axis, and arranged to hold the bearing with a radially inner surface thereof;
- and
- a stator holding portion being tubular, arranged to project upward from an upper surface of the bearing holding portion, and arranged to hold a radially inner surface of the stator with a radially outer surface thereof;
- and
- an axially lower portion of the stator holding portion includes a decreased thickness portion where a radial thickness of the stator holding portion is smaller than at another portion of the stator holding portion at another axial position.
Dependencies are inferred from the claim text.