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US 2021/0344239 A1Published application
Motor
AssigneeLG Innotek Co., Ltd.
InventorJung Kyu LEE
Life of this patent
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Abstract
An embodiment relates to a motor comprising: a shaft; a rotor connected to the shaft; and a stator disposed outside the rotor, wherein the rotor includes N rotor cores, and the number of holes formed through each of the N rotor cores is at least 2N. Accordingly, the motor allows the rotor to have a skew angle by using the multiple holes formed through the rotor cores.
Claims20
A motor comprising:
- a shaft;
- a rotor coupled to the shaft;
- and
- a stator disposed outside the rotor,
- wherein the rotor includes N rotor cores and a plurality of magnets disposed on an outer circumferential surface of each of the rotor cores, and
- the number of holes, each of which is formed in one of the N rotor cores, is at least 2N.
3 more elements
A motor comprising:
- a shaft;
- a rotor coupled to the shaft;
- and
- a stator disposed outside the rotor,
- wherein the rotor includes a first rotor core, a second rotor core, and a third rotor core, each of which includes M holes spaced apart from each other,
- the M holes include a first hole which is a reference hole, a second hole adjacent to the first hole, and a third hole adjacent to the second hole, and
- the first hole of the first rotor core is disposed to overlap the second hole of the second rotor core and the third hole of the third rotor core in a vertical direction.
4 more elements
A motor comprising:
- a shaft;
- a rotor coupled to the shaft;
- and
- a stator disposed outside the rotor,
- wherein the rotor includes a plurality of rotor cores and a plurality of magnets disposed on an outer circumferential surface of each of the rotor cores,
- each of the rotor cores includes first holes, second holes, and third holes,
- two of the first holes, two of the second holes, and two of the third holes are disposed mutually opposite to each other based on a center (C) of the shaft,
- a first angle (θ1) formed by one of the first holes and the second hole is the same as an angle formed by the second hole and the third hole around the center (C),
- the plurality of rotor cores include a first rotor core, a third rotor core, and a second rotor core disposed between the first rotor core and the third rotor core, and
- the first hole of the first rotor core, the second hole of the second rotor core, and the third hole of the third rotor core overlap in a shaft direction.
7 more elements
Dependencies are inferred from the claim text.