CPC H02K 1/2766 (2013.01) [H02K 21/14 (2013.01)] | 8 Claims |
1. A drive motor, comprising
a housing, and
a stator iron core;
wherein
the stator iron core is arranged inside the housing;
a rotor iron core is placed through an inside of the stator iron core;
the rotor iron core comprises a cylindrical iron core body; and a first opening and second opening symmetrically formed on a periphery of the cylindrical iron core body in a radial direction of the cylindrical iron core body, respectively;
the cylindrical iron core body is provided with a plurality of mounting slots for receiving magnets, the plurality of mounting slots comprise two groups of mounting slots, such that a first group of mounting slots is provided on an upper side of the two openings while a second group of mounting slots is provided on a lower side of the two openings; each group of the two groups of mounting slots comprise two mounting slots, such that there are two mounting slots between each pair of adjacent openings; the mounting slots are arranged symmetrically in pairs and non-uniformly along a circumferential direction of the rotor iron core; and each of both sides of each mounting slot of the plurality of mounting slots is provided with a magnetic-leakproof air slot, wherein a shape of the magnetic-leakproof air slots at the closest ends of the two mounting slots in a same group are a combination of an arc and a straight line, such that two mounting slots in the same group are closer to each other;
each of the first opening and second opening has a trapezoidal shape gradually narrowing toward the through hole; and
a central part of the cylindrical iron core body is provided with a through hole, a rotating shaft is inserted into the through hole.
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