Patent ID: 11936312
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 16:
17. A magnetic generator for a motor comprising:
a plurality of magnets that are arranged to face a winding and that are movable relative to the winding upon the winding being energized, the magnets being arranged in a relative movement direction while magnetic polarities based on the magnets are alternately changed,
each of the magnets comprising:
a first magnet member having a q-axis side end located closer to a pole boundary and configured to generate magnet flux in accordance with a corresponding one of the polarities, the first magnet member having first magnetic orientations defined therein; and
a second magnet member provided at the q-axis side end of the first magnet member, the second magnet member having second magnetic orientations defined therein, the second magnetic orientations intersecting with the first magnetic orientations, and being directed toward the q-axis side end of the first magnet member, wherein:

the motor is designed as a rotary electric machine that is comprised of:
a winding member in which the winding is wound; and
a magnet hold member including the magnets and radially arranged to face the winding member, the magnetic generator being used as the magnet member,

the first magnet member comprises a plurality of first magnet members arranged in the magnet member in a circumferential direction of the magnet member with predetermined pitches;
the second magnet member comprises a plurality of second magnet members, each of the second magnet members being provided for a q-axis side end of the corresponding one of the first magnet members;
the magnet hold member includes a soft magnetic core having magnet installation holes located across a d-axis for each pole at both sides of the d-axis;
the first and second magnet members are installed in each of the magnet installation holes;
each of the first magnet members comprises divided magnet segments in a direction from the q-axis to the d-axis, each of the magnet segments having at least one of the first magnetic orientations, the at least one of the first magnetic orientations of one of the magnet segments being different from the at least one of the first magnetic orientations of another of the magnet segments;
the magnet segments include at least a q-axis side segment and a d-axis segment, the q-axis side segment being located to be closer to the q-axis than the d-axis segment is, the d-axis side segment being located to be closer to the d-axis than the q-axis segment is; and
the at least one of the first magnetic orientations of the q-axis side segment are closer to a direction parallel to the q-axis than the at least one of the first magnetic orientations of the d-axis side segment is.