Inductor core for transferring electric power to a conveyor carriage

摘要

A pickup device has a core to which a coil is wound about. The core has a body formed by laminating a plurality of plates having a predetermined shape. Eddy currents produced by leakage flux is suppressed at the ends of the core. This is achieved by laminating a plate, which has a certain shape and is made of a material having a higher electric resistance value than the body, to the ends of the body. The generation of eddy currents may also be suppressed by providing notches at the ends of the core to obstruct the formation of a magnetic circuit at the ends. As another option, space may be provided at the ends of the core to disconnect the path of eddy currents.