Patent ID: 8436605

Claim:
A television apparatus comprising: a first component and a second component connected to be relatively rotatable; a substantially cylindrical magnet provided to the first component, the magnet comprising a plurality of magnetic poles along an outer circumference; a magnetic sensor provided to the second component, the magnetic sensor configured to detect magnetism of the magnetic poles; and an engagement mechanism comprising at least one convex-concave engagement portion configured to mutually engage the magnet with the first component inside or along the outer circumference of the magnet, wherein the engagement mechanism is configured to be asymmetric with respect to a central axis of the magnet and asymmetric with respect to any virtual plane including the central axis, wherein: the engagement mechanism comprises the convex-concave engagement portion along the outer circumference of the magnet, and the convex-concave engagement portion is located opposite the magnetic sensor with respect to the central axis of the magnet.