Composite magnetic member, electric power generating element, electricity generating system, and encoder

Abstract

Variations in the amount of power generated by a power generating element are reduced. A composite magnetic member is a magnetic member that generates a large Barkhausen effect by a change in an external magnetic field, and includes: a wire-shaped magnetic member that extends in a first direction; two flux concentrating members that are separated from each other and are arranged side by side along the first direction, the two flux concentrating members (150) being provided with an opening into which a part of the magnetic member is inserted; and resin member that fixes the magnetic member and the two flux concentrating members. Resin member includes first covering portion that covers the outer peripheral surface of the magnetic member between the at least two flux concentrating members. A space for disposing the coil is provided between the two flux concentrating members.

Dependencies are inferred from the claim text.