US 12,112,885 B2
Solenoid coil
Yuichiro Tanaka, Tokyo (JP); Shinji Seto, Tokyo (JP); Norio Nakazato, Tokyo (JP); Shunsuke Mori, Hitachinaka (JP); Yohei Katayama, Hitachinaka (JP); Teruaki Yamanaka, Hitachinaka (JP); and Motohiro Hirao, Hitachinaka (JP)
Assigned to Hitachi Astemo, Ltd., Hitachinaka (JP)
Appl. No. 17/597,076
Filed by Hitachi Astemo, Ltd., Hitachinaka (JP)
PCT Filed Apr. 20, 2020, PCT No. PCT/JP2020/017117
§ 371(c)(1), (2) Date Dec. 23, 2021,
PCT Pub. No. WO2020/261732, PCT Pub. Date Dec. 30, 2020.
Claims priority of application No. 2019-118320 (JP), filed on Jun. 26, 2019.
Prior Publication US 2022/0319751 A1, Oct. 6, 2022
Int. Cl. H01F 27/32 (2006.01); H01F 5/02 (2006.01); H01F 5/06 (2006.01); H01F 7/16 (2006.01)
CPC H01F 5/06 (2013.01) [H01F 5/02 (2013.01); H01F 27/325 (2013.01); H01F 7/16 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A solenoid coil, comprising:
a coil having a first end surface and a second end surface on its both ends in an axial direction;
a member which is in contact with the first end surface, and has a groove through which the wire material of the coil passes;
an insulating resin formed to coat at least an outer circumferential surface and the second end surface of the coil, wherein the resin with a substantially U-shaped section is continuously coated on at least a part of an inner circumferential surface of the coil via an area from the outer circumferential surface to the second end surface; and
a cylindrical bobbin disposed at an inner side of the coil, wherein
the bobbin is provided with the member in the form of a flange at a side of the first end surface, and
at least a part of the wire material is wound around an outer circumference of the bobbin, and
the resin is coated on the inner circumferential surface of the coil at a part where the wire material is not wound around the outer circumference of the bobbin.