Sensor mounting structure

A sensor mounting structure (100) includes a circuit board (120) configured such that an inclination sensor (110) is mounted on a mounting surface of the circuit board (120) to generate a signal indicative of an inclination angle of a vehicle (300), a connector (122) configured to output the signal, and a casing (130) accommodating the circuit board (120) and adapted to be mounted on the vehicle (300). The casing (130) has an opening (151) through which the connector (122) faces the outside of the casing (130). One of the circuit board (120) and the casing (130) includes a projection (138), and the other of the circuit board (120) and the casing (130) includes a projection receiving portion (124). The projection (138) extends in a direction intersecting the mounting surface of the circuit board (120) and engages with the projection receiving portion (124) such that the circuit board (120) and the casing (130) are positioned relative to each other.