US 11,862,392 B2
Coil assembly for breaking vehicle and brake apparatus having the same
Eu Dong Seo, Seoul (KR)
Assigned to HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed by HYUNDAI MOBIS CO., LTD., Seoul (KR)
Filed on Mar. 29, 2021, as Appl. No. 17/216,521.
Claims priority of application No. 10-2021-0000214 (KR), filed on Jan. 4, 2021.
Prior Publication US 2022/0215995 A1, Jul. 7, 2022
Int. Cl. H01F 7/08 (2006.01); F16K 31/06 (2006.01); H01F 7/126 (2006.01); H01F 27/32 (2006.01); B60T 13/68 (2006.01); B60T 15/02 (2006.01); H01F 27/29 (2006.01)
CPC H01F 7/081 (2013.01) [B60T 13/686 (2013.01); B60T 15/028 (2013.01); F16K 31/0675 (2013.01); H01F 7/126 (2013.01); H01F 27/29 (2013.01); H01F 27/325 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A coil assembly for vehicle braking, comprising:
a hollow bobbin configured to allow a coil to be wound between upper and lower surfaces thereof along an outer circumferential surface thereof, and having at least one engagement protrusion formed on an upper surface and/or a lower surface thereof;
a plurality of lead pins coupled with the hollow bobbin to supply current to the coil;
a plurality of pin assembly units formed on two side ends of the hollow bobbin to fix the plurality of lead pins and connect the plurality of lead pins to the coil; and
a hollow case configured to surround at least a portion of the hollow bobbin and having upper and lower portions each having two opposed sides and an end extending between the opposed sides, the upper and lower portions being bent in a first direction to thereby and be attached to the upper and lower surfaces of the hollow bobbin, one of the upper and lower portions having a first width in a second direction perpendicular to the first direction and including at least one engagement hole to be engaged with the at least one engagement protrusion and a plurality of step differences formed on the two opposing sides of the one portion to define a second width narrow than the first width in the second direction,
wherein the plurality of pin assembly units are received within the step differences, and
wherein a center of the hollow bobbin is located on a line passing through points where each of the plurality of lead pins is fixed to each of the plurality of pin assembly units.