Actuator unit

An actuator unit coupled to a switching mechanism that switches a shift range of an automatic transmission and configured to drive the switching mechanism, the actuator unit comprising:

• a motor configured to generate a drive force for driving the switching mechanism;
• a control substrate configured to control the motor;
• a connector configured to connect a wire to the control substrate;
• a housing that includes an opening;
• a cover configured to cover the opening;
• and
• a shock absorption material, wherein:
• the motor and the control substrate are positioned in a housing space defined by the housing and the cover;
• the control substrate is fixed to the housing;
• the shock absorption material is positioned between the control substrate and the cover, and contacts both the control substrate and the cover;
• the control substrate includes a first fixing portion fixed to the housing, a second fixing portion fixed to the motor, and a third fixing portion fixed to the connector;
• the control substrate has a flat plate shape;
• and
• the shock absorption material is positioned at a position overlapping at least one of the first fixing portion, the second fixing portion, and the third fixing portion as viewed in plan in a direction that is orthogonal to a main surface of the control substrate.