Patent ID: 8456262
Filing Date: 2013-06-04
Classification: F16K,H01F

Abstract:
1. An electromagnetic solenoid comprising: a coil which generates magnetic force by energization; a cylindrical yoke covering an outer circumference of the coil and extending in an axial direction of the coil; first and second stators which are arranged around the coil to configure a magnetic circuit around the coil together with the yoke, the first and second stators being magnetized by the energization of the coil to configure an electromagnet; a plunger guide arranged radially inward of the first and second stators; and a plunger inserted into the plunger guide to be slidably movable in the axial direction of the coil and to be attracted by magnetic force of the electromagnet, wherein the first stator is arranged at one end side of the coil in the axial direction of the coil, and the second stator is arranged at the other end side of the coil in the axial direction of the coil, the first stator includes: wherein an inner circumferential surface of the yoke has a step surface that is opposed to a surface of the radial core part on a side of the coil in the axial direction of the coil, the step surface and the surface of the radial core part hold a magnetic member therebetween, and the yoke and the radial core part are magnetically coupled with each other through the magnetic member.