Steering angle sensor apparatus

摘要

Steering angle sensor apparatus includes a disc, a circuit substrate and a sensor contained within a single cover. The disc has indications such as slits or lines and is mounted on one of a steering shaft that rotates during a steering operation and a stationary member such as a steering column. The circuit substrate includes circuit parts and is mounted on the other one of the steering shaft and stationary member. A sensor includes at least one element mounted on the circuit substrate and senses the relative movement of the disc caused by the steering operation. The circuit substrate is positioned to confront a surface of the disc.