INDUCTOR USING DRUM CORE AND METHOD FOR PRODUCING THE SAME
First Claim
Patent Images
1. An inductor comprising:
- a drum core comprising a sintered magnetic material and having a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis; and
a coil conductor wound on the winding axis of the drum core, the coil conductor being covered on an outer periphery thereof with a composite magnetic material in a sheet form comprising a resin and magnetic powder, the composite magnetic material in a sheet form being adhered to the outer periphery of the coil conductor except at least for inner surfaces of the pair of collars of the drum core facing each other.
1 Assignment
0 Petitions
Accused Products
Abstract
An inductor comprises a drum core which comprises a sintered magnetic material and has a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis. The inductor further comprises a coil conductor wound on the winding axis of the drum core, the coil conductor is covered on an outer periphery thereof with a composite magnetic material in a sheet form containing a resin and magnetic powder, and the composite magnetic material in a sheet form is adhered to the outer periphery of the coil conductor except at least for inner surfaces of the pair of collars of the drum core facing each other.
-
Citations
10 Claims
-
1. An inductor comprising:
-
a drum core comprising a sintered magnetic material and having a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis; and
a coil conductor wound on the winding axis of the drum core, the coil conductor being covered on an outer periphery thereof with a composite magnetic material in a sheet form comprising a resin and magnetic powder, the composite magnetic material in a sheet form being adhered to the outer periphery of the coil conductor except at least for inner surfaces of the pair of collars of the drum core facing each other. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A method of producing an inductor comprising:
-
preparing a drum core comprising a sintered magnetic material and having a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis;
winding a coil conductor on the winding axis of the drum core; and
adhering a composite magnetic material in a sheet form on an outer periphery of the coil conductor, while preventing the composite magnetic material in a sheet form from being in contact with inner surfaces of the pair of collars of the drum core facing each other.
-
-
8. A method of producing an inductor comprising:
-
preparing a drum core comprising a sintered magnetic material and having a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis;
winding a coil conductor on the winding axis of the drum core; and
adhering a composite magnetic material in a sheet form on an outer periphery of the coil conductor, the composite magnetic material in a sheet form comprising an adhesive layer formed in advance on a selected area of one of major surfaces thereof except at least for an area where the composite magnetic material in a sheet form is in contact with inner surfaces of the pair of collars of the drum core facing each other.
-
-
9. An inductor comprising:
-
a drum core comprising magnetic material and having a winding axis and a pair of collars in a plate shape provided on both ends of the winding axis; and
a coil conductor wound on the winding axis of the drum core, the coil conductor being covered on an outer periphery thereof with a composite magnetic material comprising a resin and magnetic powder, wherein there is no substantial region of contact between the composite magnetic material and the collars.
-
-
10. A method of producing an inductor comprising:
-
winding a coil conductor around a drum core; and
wrapping a sheet of composite magnetic material on an outer periphery of the coil conductor, the composite magnetic material comprising a resin and magnetic powder.
-
Specification