Patent ID: 8556232

Claim:
A linear solenoid comprising: a linear solenoid portion which is provided in a housing, comprising: a coil provided in a coil assembly; a fixed core; a shaft-less cylindrical movable core which is attracted toward the fixed core when the coil is energized; and a cylindrical yoke which surrounds an outer circumference surface of the movable core, wherein a recess to which the movable core faces is formed on the fixed core, a first stopper which is made of a nonmagnetic material and limits a displacement of the movable core in one direction is provided in a hole which continues to the recess, and the first stopper is provided with an inserting hole through which a displacement transmission member to transmit the displacement of the movable core is inserted, wherein the first stopper is separated from the coil assembly and cylindrical yoke by the fixed core, and wherein the cylindrical yoke and the movable core are separated by a bearing provided on less than the entire inner surface of the cylindrical yoke, where the bearing has an internal surface that projects from the inner surface of the cylindrical yoke by a predetermined length in a radial direction, forming a gap having said predetermined length in a radial direction between the movable core and a portion of the cylindrical yoke not having a bearing projecting therefrom, and wherein said cylindrical yoke and said housing form a single structure.