Buckle Device

摘要

A buckle device (10) in which it can be detected whether or not a tongue plate (36) inserted into a case is locked, and in which reliability of such detection is high. In the buckle device (10), a magnetic plate is provided at a leg portion (68) which moves together with the tongue plate which is inserted into an interior of the case. Changes in orientation of a magnetic field of a magnet (116) of a sensing section (112), which orientation varies due to the magnetic plate approaching and moving away from the magnet, are detected at an MRE sensor (118).