Motor
AssigneeNidec Corporation
InventorsKentaro SATO, Takahiro UETANI
Life of this patent
Estimating the term…
Abstract
A motor includes a rotor rotatable about a central axis and a stator opposing the rotor in a radial direction. The rotor includes an inner core extending along the central axis, a magnetic pole portions located radially outward of the inner core and arranged along a circumferential direction, and a holder holding the inner core and the magnetic pole portions. At least a portion of the magnetic pole portions includes two layers including a magnet and an outer core located radially outward or inward of the magnet and extending along the central axis. The holder includes a flange portion located on a one axial side of the inner core and the magnetic pole portions.
Claims8
1-7. (canceled)
A motor comprising:
- a rotor rotatable about a central axis;
- and
- a stator opposing the rotor in a radial direction;
- wherein
- the rotor includes:
- an inner core extending along the central axis;
- magnetic pole portions radially outward of the inner core and arranged along a circumferential direction;
- and
- a holder holding the inner core and the magnetic pole portion;
- at least a portion of the magnetic pole portions includes two layers including a magnet and an outer core located radially outward or inward of the magnet and extending along the central axis;
- the holder includes a flange portion located on one axial side of the inner core and the magnetic pole portions;
- the flange portion includes:
- a first opposing surface that opposes an end surface opposing the one axial side of the inner core;
- a second opposing surface that opposes an end surface opposing the one axial side of the outer core;
- and
- a third opposing surface that opposes an end surface opposing the one axial side of the magnet;
- and
- the second opposing surface is located on the one axial side with respect to the first opposing surface and the third opposing surface.
Dependencies are inferred from the claim text.