Motor unit

A motor assembly comprising:

• a housing which houses a motor with an axis of rotation extends in an axial direction;
• a first substrate with a plate shape;
• and
• an electronic component mounted on the first substrate;
• wherein the housing includes:
• a tubular portion that extends in the axial direction and accommodates the motor;
• and
• a side wall portion that protrudes from a radial outer surface of the tubular portion in a direction including at least a radial direction and a circumferential direction, and extends in the axial direction;
• an accommodation space to accommodate the electronic component is provided between the tubular portion and the side wall portion as viewed from the axial direction;
• the tubular portion includes a recess which is opposed to the accommodation space;
• the recess is provided on the radial outer surface of the tubular portion and is recessed radially inward;
• the electronic component is mounted on a side surface of the first substrate which faces inward in the radial direction;
• and
• the electronic component overlaps the recess when viewed along the radial direction.