An embodiment provides a sensing device comprising: a first cover; a second cover coupled with the first cover; a rotor disposed at the second cover; a first magnet disposed between the second cover and the rotor; a stator disposed between the first magnet and the second cover; a seating part disposed between the first cover and the rotor; a second magnet disposed on the seating part; a circuit board disposed on a bottom surface of the second cover; and a first hall sensor and a second hall sensor disposed on the circuit board, wherein the first cover comprises an upper plate having an opening and a side plate extending downward from the upper plate, and the side plate of the first cover comprises a first groove formed at a position corresponding to the second hall sensor and a second groove spaced apart from the first groove.
SENSING DEVICE
2021-03-18
Patent
Elektronische Ressource
Englisch