Rotary angle detecting device

Abstract

A rotary angle detecting device is provided, including a fixed portion, a rotary module, a sensing module, and a permeability member. The rotary module includes a rotary shaft pivotally connected to the fixed portion, and can rotate around a main axis relative to the fixed portion. The sensing module is configured to detect the motion state of the rotary shaft relative to the fixed portion. The sensing module includes a magnetic force sensor and a magnetic member corresponding to the magnetic force sensor. The magnetic member can rotate relative to the magnetic force sensor. The permeability member is disposed between the sensing module and the rotary module.

Dependencies are inferred from the claim text.