Patent ID: 8585014

Claim:
A linear solenoid comprising: linear solenoid portion which is provided in a housing, comprising: a coil; a cylindrical movable core which is attracted toward a fixed core when the coil is energized; and a cylindrical yoke which surrounds an outer circumference surface of the movable core, wherein said cylindrical yoke and said fixed core are spaced apart from each other, wherein said cylindrical yoke and said housing constitute a single member, and wherein the movable core has a shaft-less structure, one or more bearings for slidably supporting the movable core are attached to one or more annular recesses formed in the cylindrical yoke, and the one or more bearings contact less than the entire surface of the movable core and project by a predetermined length from an inner circumference surface of the cylindrical yoke toward the movable core, such that the movable core slidingly contacts only said one or more bearings.