CORE FOR TUBULAR PERMANENT MAGNET ACTUATOR AND TUBULAR PERMANENT MAGNET ACTUATOR USING THE SAME

摘要

PURPOSE: A core for a cylindrical electronic motor and a cylindrical electronic motor using the same are provided to prevent the decline of driving thrust of a motor by preventing magnetic saturation locally generated according to the thickness of the core. CONSTITUTION: A ring shaped coil(21) is arranged at the inner periphery of a circular tube shaped core body(41). Multiple coil arrangement grooves(42) are formed in the shape of a concavely hollowed ring. A protrusion part(43) is formed corresponding to the integral coil arrangement groove. The protrusion part is formed at the entire circumference of the outer periphery of the core body to be the same height. The protrusion part is protruded in a radial direction as deep as the depth of the coil arrangement groove corresponding to the same radial direction.