MAGNETIC CIRCUIT AND KEY INPUT DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a technique capable of manufacturing a magnetic circuit using an attraction force between a magnet and a magnetic body at much lower cost while reducing leakage of a magnetic field (magnetic flux) furthermore.SOLUTION: There is provided a magnetic circuit that includes a first magnet body including a magnet and a yoke plate, and a second magnet body. In the magnet circuit, the first magnetic body and the second magnetic body form a closed magnetic path.