POSITION SENSOR OF MOTOR

A position sensor of a motor of an exemplary embodiment of the present invention comprises: a housing in which a hollow is formed and an accommodation space is formed as surrounding the hollow; a ground ring formed through an inner circumferential surface of the housing; a first PCB installed in the accommodation space and formed with a first circuit part to which a voltage is applied; an induction unit that faces the first PCB and rotates; a connecting bushing embedded in the housing and electrically connected to the ground by a fastening member; and a relay unit installed in the accommodation space and relaying the ground ring and the connection bushing electrically, wherein: the ground ring is formed with a body formed through the inner circumferential surface of the housing, a contact part formed on one side of the body and disposed of in the hollow, and a first connection part extending from the other side of the body and contacting the relay unit in the accommodation space, thereby discharging an induced current generated by a rotational motion of a shaft passing through the hollow to the ground, resulting in disclosing new structures capable of realizing miniaturization of the motor.