Inductor skeleton structure, inductance device and luminaire

An inductor skeleton structure, comprising a pedestal and a main winding part,

• wherein the pedestal comprises a base, a fixing receptacle, and an auxiliary winding part, the fixing receptacle is disposed on the base, the base comprises a fitting surface for fitting with a printed circuit board (PCB) and a circumferential side surface surrounding the fitting surface, and the auxiliary winding part is extended away from the base from the circumferential side surface;
• wherein the main winding part comprises a main winding groove for winding a main coil, an upper end portion, a lower end portion, and a main body portion;
• the main winding part is fixed on a side, which is facing away from the fitting surface, of the base by the fixing receptacle;
• a downward surface of the auxiliary winding part comprises a welding surface for welding, and the auxiliary winding part is used for winding an auxiliary coil capable of covering at least a portion of the welding surface;
• the welding surface and the fitting surface are configured such that the auxiliary coil covering the welding surface is positioned to be flush with the fitting surface or beyond the fitting surface;
• and
• an inner contour of the fixing receptacle and an outer contour of the lower end portion are both in a circular shape, a circumferential limit piece is disposed on the fixing receptacle, and a circumferential limit matching piece is disposed on the lower end portion;
• and the lower end portion and the fixing receptacle are capable of being limited from rotation around a center of the circular shape by matching of the circumferential limit piece and the circumferential limit matching piece.