Patent ID: 11863034
Assignee: LG INNOTEK CO., LTD.
Field: Measurement (Instruments)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A motor comprising:
a central shaft;
a sensing magnet coupled to the central shaft;
a sensor portion comprising a main magnet disposed to correspond to the sensing magnet;
wherein the sensor portion comprises a substrate, a first group including a first Hall sensor and a third Hall sensor disposed on the substrate, and a second group including a second Hall sensor and a fourth Hall sensor,
wherein the first Hall sensor and the third Hall sensor are arranged to overlap in a radial direction about the central shaft and the second Hall sensor and the fourth Hall sensor are arranged to overlap in a radial direction about the central shaft,
wherein each of the first Hall sensor and the second Hall sensor is at least three arranged on a first circumference about the central shaft, and each of the third Hall sensor and the fourth Hall sensor is at least two arranged on a second circumference about the central shaft, wherein a radius of the second circumference is greater than a radius of the first circumference.