Patent ID: 11862368
Assignee: OPPLE LIGHTING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. An inductance device, wherein the inductance device comprises a main coil, an auxiliary coil, an upper magnetic core, a lower magnetic core, and the inductor framework; and
wherein the inductor framework comprises: a main winding part and an auxiliary winding part that are integrally arranged;
wherein the main winding part comprises an upper end, a lower end, a main body, and an inserting hole; the main body is located between the upper end and the lower end, edges of both the upper end and the lower end go beyond the main body and cooperate with the main body to form a main winding groove; the upper end has a top surface facing away from the lower end, and the lower end has a bottom surface facing away from the upper end; the inserting hole successively passes through the upper end, the main body, and the lower end in a direction from the top surface to the bottom surface;
wherein the auxiliary winding part extends towards a direction away from the inserting hole from the lower end, and the auxiliary winding part has an extension direction perpendicular to that of the inserting hole; a side surface of the auxiliary winding part facing away from the upper end is a welding surface that is at a distance from the top surface in the extension direction of the inserting hole no less than a distance between the bottom surface and the top surface in the extension direction of the inserting hole; the auxiliary winding part is configured to be wound thereon an auxiliary coil that covers at least a portion of the welding surface, the auxiliary winding part is provided with a position limiting structure configured to prevent the auxiliary coil that is wound around the auxiliary winding part from separating from the auxiliary winding part; and
wherein the main coil is wound in the main winding groove, the auxiliary coil is wound around the auxiliary winding part and covers a portion of the welding surface; both the upper magnetic core and the lower magnetic core are E-shaped structures, a middle extension portion of each of the E-shaped structures is a central column; the upper magnetic core is capped onto the top surface, the central column of the upper magnetic core is inserted into the inserting hole, the lower magnetic core is capped onto the bottom surface, the central column of the lower magnetic core is also inserted into the inserting hole, and a side surface of the lower magnetic core facing away from the upper magnetic core does not go beyond the welding surface.