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

Claim 3:
4. 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 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 a q-axis side end of the corresponding magnet located closer to a pole boundary, the second magnet member having second magnetic orientations defined therein, the second magnetic orientations intersecting with the first magnetic orientations, 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;
the first magnet members are located across the d-axis for each pole to be separated from each other as a pair of main magnets; and
the first magnetic orientations of each first magnet member are inclined with respect to the d-axis and intersects with the d-axis at a portion of the core, the portion of the core being located to be closer to the armature winding than to an anti-armature winding side,
the magnetic generator further comprising:
a plurality of third magnet members each having third magnetic orientations, each of the third magnet members being provided at a d-axis side end of the corresponding one of the first magnet members such that the third magnetic orientations intersect with the first magnetic orientations of the corresponding one of the first magnet members.