Patent ID: 9030284
Filing Date: 2015-05-12
Classification: H01F

Abstract:
1. A combined structure of hollow bobbin and conductive sheet for a transformer, comprising: a hollow bobbin having an outer surface, a guiding channel and at least one positioning structure, the positioning structure formed on the outer surface, the guiding channel recessed on the outer surface and extending from the positioning structure to one end of the hollow bobbin along a central axis of the hollow bobbin, the positioning structure being a positioning groove that is formed in a notch configuration extending from an edge of the guiding channel toward the central axis of the hollow bobbin; and at least one conductive sheet fit on the outer surface of the hollow bobbin and comprising a main body and at least one engaging structure, wherein the main body has a hollow portion, wherein the hollow portion makes the main body to have an inner circumference, wherein the engaging structure is formed on the inner circumference of the main body and is engaged with the positioning structure of the hollow bobbin by sliding from the end of the hollow bobbin into the guiding channel along the central axis of the hollow bobbin; wherein the transformer comprises at least one winding disposed on the outer surface of the hollow bobbin and abutting against the conductive sheet.