Patent ID: 9153370
Filing Date: 2015-10-06
Classification: H01F

Abstract:
1. A linear solenoid comprising: a moving core supported to be capable of sliding in an axial direction of the moving core; a main coil winding around the moving core and forming a tubular shape; a magnetically attractive core configured to magnetically attract the moving core based on magnetic force caused by the main coil; and a secondary coil disposed separately from the main coil so that the secondary coil intersects with the moving core at a position corresponding to the secondary coil when the moving core moves toward the magnetically attractive core, wherein the magnetically attractive core comprises a cylindrical portion including a magnetism interception part that is thin in a radial direction of the moving core with respect to another portion of the cylindrical portion, and the secondary coil is located generally at a center of the main coil to overlap with the magnetism interception part in the axial direction.