Spindle motor including stator with magnetic flux guides

A disk drive comprising:

• a disk drive base:
• and
• a spindle motor including:
• a spindle motor rotor rotatably coupled to the disk drive base, the spindle motor rotor defining a central axis, the spindle motor rotor including:
• a first plate defining a circular first plate periphery disposed about the central axis;
• a second plate defining a circular second plate periphery disposed about the central axis;
• and
• a magnet defining a circular periphery disposed about the central axis between and parallel to the first and second plates;
• and
• a stator attached to the disk drive base, the stator including:
• a plurality of magnetic flux guides distributed radially about the spindle motor rotor, each magnetic flux guide including:
• a U-shaped guide body;
• a first end extending from the guide body and terminating at a first tooth face disposed adjacent the first plate periphery;
• and
• a second end extending from the guide body opposite the first end and terminating at a second tooth face disposed adjacent the second plate periphery, the second end being angularly off-set about the central axis with respect to the first end.

A spindle motor for use in a disk drive, the spindle motor comprising:

• a spindle motor rotor defining a central axis, the spindle motor rotor including:
• a first plate defining a circular first plate periphery disposed about the central axis;
• a second plate defining a circular second plate periphery disposed about the central axis;
• and
• a magnet defining a circular periphery disposed about the central axis between and parallel to the first and second plates;
• and
• a stator including:
• a plurality of magnetic flux guides distributed radially about the spindle motor rotor, each magnetic flux guide including:
• a U-shaped guide body;
• a first end extending from the guide body and terminating at a first tooth face disposed adjacent the first plate periphery;
• and
• a second end extending from the guide body opposite the first end and terminating at a second tooth face disposed adjacent the second plate periphery, the second end being radially off-set from the central axis with respect to the first end.

A disk drive comprising:

• a disk drive base;
• and
• a spindle motor including:
• a spindle motor rotor rotatably coupled to the disk drive base, the spindle motor rotor defining a central axis, the spindle motor rotor including:
• a first plate defining a circular first plate periphery disposed about the central axis;
• a second plate defining a circular second plate periphery disposed about the central axis;
• and
• a magnet defining a circular periphery disposed about the central axis between and parallel to the first and second plates;
• and
• a stator attached to the disk drive base, the stator including:
• a plurality of magnetic flux guides distributed radially about the spindle motor rotor, each magnetic flux guide including:
• a U-shaped guide body;
• a first end extending from the guide body and terminating at a first tooth face disposed adjacent the first plate periphery;
• and
• a second end extending from the guide body opposite the first end and terminating at a second tooth face disposed adjacent the second plate periphery, the second end being radially off-set from the central axis with respect to the first end.

A spindle motor for use in a disk drive, the spindle motor comprising:

• a spindle motor rotor defining a central axis, the spindle motor rotor including:
• a first plate defining a circular first plate periphery disposed about the central axis;
• a second plate defining a circular second plate periphery disposed about the central axis;
• and
• a magnet defining a circular periphery disposed about the central axis between and parallel to the first and second plates;
• and
• a stator including:
• a plurality of magnetic flux guides distributed radially about the spindle motor rotor, each magnetic flux guide including:
• a U-shaped guide body;
• a first end extending from the guide body and terminating at a first tooth face disposed radially adjacent the first plate periphery, the first end and the first plate defining a vertical gap;
• and
• a second end extending from the guide body opposite the first end, horizontally overlapping with the second plate and terminating at a second tooth face disposed adjacent the second plate periphery, the second end and the second plate defining a horizontal gap.

A disk drive comprising:

• a disk drive base;
• and
• a spindle motor including:
• a spindle motor rotor rotatably coupled to the disk drive base, the spindle motor rotor defining a central axis, the spindle motor rotor including:
• a first plate defining a circular first plate periphery disposed about the central axis;
• a second plate defining a circular second plate periphery disposed about the central axis;
• and
• a magnet defining a circular periphery disposed about the central axis between and parallel to the first and second plates;
• and
• a stator attached to the disk drive base including:
• a plurality of magnetic flux guides distributed radially about the spindle motor rotor, each magnetic flux guide including:
• a U-shaped guide body;
• a first end extending from the guide body and terminating at a first tooth face disposed radially adjacent the first plate periphery, the first end and the first plate defining a vertical gap;
• and
• a second end extending from the guide body opposite the first end, horizontally overlapping with the second plate and terminating at a second tooth face disposed adjacent the second plate periphery, the second end and the second plate defining a horizontal gap.