US 11,869,712 B2
Electromagnetic solenoid and method for manufacturing electromagnetic solenoid
Manabu Horiuchi, Tokyo (JP); Keisuke Nagata, Tokyo (JP); and Rie Matsuyama, Tokyo (JP)
Assigned to SANYO DENKI CO., LTD., Tokyo (JP)
Filed by SANYO DENKI CO., LTD., Tokyo (JP)
Filed on Mar. 4, 2022, as Appl. No. 17/687,207.
Claims priority of application No. 2021-041047 (JP), filed on Mar. 15, 2021.
Prior Publication US 2022/0293321 A1, Sep. 15, 2022
Int. Cl. H01F 41/02 (2006.01); H01F 7/08 (2006.01); H01F 7/16 (2006.01)
CPC H01F 7/088 (2013.01) [H01F 7/1638 (2013.01); H01F 41/02 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An electromagnetic solenoid comprising:
a stator including a stator core;
a coil configured to generate an electromagnetic attractive force by energizing the stator core;
a mover configured to be attracted toward the stator by the electromagnetic attractive force; and
a magnetic elastic admixture including a resin material with soft magnetism and elasticity,
wherein the mover is configured to reciprocate by being released by an elastic body that generates a biasing force in a direction opposite to a direction in which the electromagnetic attractive force acts,
a proximal end of the mover is located at a first proximal end position upon the mover being electromagnetically attracted toward the stator during energization of the coil, and is located at a second proximal end position upon the mover being electromagnetically released and moved to a side opposite to the stator during de-energization of the coil, and
the magnetic elastic admixture is configured to elastically deform between the mover and the stator and not to be separated from a contact surface with the mover and a contact surface with the stator.