Inductor devices – With outer casing or housing – Potted type
Patent
1999-07-12
2000-09-12
Gellner, Michael L.
Inductor devices
With outer casing or housing
Potted type
336 90, 336192, 336198, H01F 2702, H01F 27829
Patent
active
06118361&
ABSTRACT:
A molded coil is provided for preventing the entrance of water, oil and the like into the inside a coil. The molded coil 1 is comprised of a coil 2 provided therein and having the outer surfaces thereof covered by a resin material, and a molded element 17 formed by curing the resin material. Bulging portions 6 are provided at the opposite ends of a shaft 5 of a bobbin 3 of the coil 2. The molded element 17 is so formed as to cover the coil 2 from the outer surfaces of the two bulging portions 6 over the outer circumferential surface of the wound wire 4. On the outer surface of the lower bulging portion 6 is provided an embossed engaging portion in the form of a closed ring along the entire circumference of the bulging portion 6. Thus, even if water, oil or the like enters through mold detaching holes 18, it will not reach the inside of the coil 2.
REFERENCES:
patent: 4989574 (1991-02-01), Abe
patent: 5111175 (1992-05-01), Sugiura et al.
patent: 5659246 (1997-08-01), Togo et al.
Casella Anthony J.
Gellner Michael L.
Hespos Gerald E.
Mai Anh
Porco Michael J.
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