Sensor module and motor comprising same

A sensor module rotated in conjunction with a rotating shaft to detect a rotor position, the sensor module comprising:

• a sensing plate including a protrusion part disposed at one side in a polygonal shape, and a first insertion hole disposed at the protrusion part;
• and
• a sensing magnet including a second insertion hole formed to correspond to the polygonal shape of the protrusion part for the protrusion part to be fixedly inserted therein,
• wherein the sensing magnet comprises a main magnet including an inner side surface in a polygonal shape,
• wherein the main magnet includes a plurality of segmented magnets having identical areas,
• wherein a width of the plurality of segmented magnets between an outer side surface and the inner side surface changes in a circumferential direction,
• wherein the sensing plate comprises a plurality of through holes disposed on the protrusion part, and
• wherein the plurality of through holes is disposed on a virtual circle in contact with the second insertion hole.