Patent ID: 11894179
Assignee: HL MANDO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  F | IPC F  H

Claim 0:
1. A coil assembly comprising:
a bobbin comprising a winding part in which a passing hole is formed on an inner surface thereof and a coil is wound along an outer surface thereof, and an upper frame provided on an upper side of the winding part to limit an upper winding range of the coil;
a lower case coupled to a lower side of the winding part and directly in contact with the coil to limit a lower winding range of the coil; and
an upper case coupled to the lower case to surround an outer surface of the bobbin together with the lower case,
wherein
the lower case has
an upper surface directly in contact with the coil and a lower surface of the winding part, and
an inner surface continuously extending downward from the upper surface and aligned with the inner surface of the winding part.