Abstract: A tilt steering apparatus comprises a lock lever rotatable around the axis of a supporting shaft. When a lock lever is rotated around the axis of the supporting shaft, a cam surface is rotated relative to a cam follower. As a result, the cam surface presses the cam follower against side plates of a fixed bracket, thereby achieving tilt locking. The cam surface has a plurality of slopes corresponding to a rotation stroke position of the lock lever. The operating torque of the lock lever at the time of a locking operation is reduced without increasing the range of the operating angle of the lock lever.

Abstract: A first alternating signal of which phase changes according to changes in the rotation angle of a first shaft is output, and a second alternating signal of which phase changes according to changes in the rotation angle of a second shaft capable of rotating elastically with respect to the first shaft is output. A phase difference correspondence signal of which waveform changes according to changes in the phase difference between the first alternating signal and second alternating signal is output. A value corresponding to the torque transmitted by the first and second shafts is found from the phase difference correspondence signal.

Abstract: A tilt steering apparatus comprises a lock lever rotatable around the axis of a supporting shaft. When a lock lever is rotated around the axis of the supporting shaft, a cam surface is rotated relative to a cam follower. As a result, the cam surface presses the cam follower against side plates of a fixed bracket, thereby achieving tilt locking. The cam surface has a plurality of slopes corresponding to a rotation stroke position of the lock lever. The operating torque of the lock lever at the time of a locking operation is reduced without increasing the range of the operating angle of the lock lever.