Transformer framing structure
OwnerKatsumi Shigeharainventor
Life of this patent
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Abstract
A transformer framing structure in which the distance between the opposing end faces of the primary and secondary coils is increased to improve the dielectric strength of the transformer, and also the primary and secondary coils are framed by separate frameworks to allow separate winding of the respective coils to thereby improve assembling workability. According to this invention, the number of the dies used for molding of the frame body, bobbin assembly and cover of the framing structure is lessened, and mounting of the terminals is simplified to allow easy terminal assemblage. Also, adaptability of the transformer to a printed substrate is improved.
Claims4
A transformer framing structure comprising a frame body including a base plate having provided centrally thereof a trapezoidal raised-up portion forming a channel extending through said base plate, and a prismatic portion provided at the center of said trapezoidal portion, with the hollow of said prismatic portion being in communication with said channel, said prismatic portion being enclosed by a wall erected on said base plate outside of and spaced-apart from said prismatic portion, said enclosing wall being provided with the upper and lower flanges at its both ends;
- a bobbin assembly comprising a prismatic portion provided with the upper and lower flanges at its upper and lower ends respectively, said prismatic portion having legs extending down from the lower end thereof and joined to the respective support plates, said bobbin assembly being designed to wind thereon the coil to be housed in a coil chamber defined between the prismatic portion of said frame body and the surrounding wall;
- and a cover for enclosing said frame body and bobbin assembly, said cover comprising a top cover portion provided at an end of a prismatic structure disposed in opposition to the prismatic portion of said frame body and a side cover portion extending down vertically from the outer periphery of said top cover portion.
Dependencies are inferred from the claim text.