Method for producing an inductor
AssigneeMurata Manufacturing Co., Ltd.
InventorsTakahiro Yamamoto, Tadashi Morimoto
Life of this patent
Estimating the term…
Abstract
A method for producing an inductor having an internal conductor includes coating an internal conductor with a covering material, placing the internal conductor coated with the covering material in a shaping mold, and filling a material around the internal conductor so as to form a compact unbaked chip element with the internal conductor provided at a predetermined position. The unbaked chip element is then baked in order to eliminate the covering material so as to form a gap around the internal conductor.
Claims9
A method for producing an inductor having an internal conductor, said method comprising the steps of:
- coating the internal conductor with a covering material;
- placing the coated internal conductor in a shaping mold;
- filling an element material around the coated internal conductor so as to form a compact unbaked chip element with the coated internal conductor provided at a predetermined position;
- and
- baking the unbaked chip element in order to eliminate the covering material so as to form a gap between the internal conductor and the element material.
A method for producing an inductor having an internal conductor comprising a coil-shaped metal wire, said method comprising the steps of:
- covering portions of the coil-shaped metal wire which are adjacent to each other with respect to an axial direction of the coil-shaped metal wire with a covering material;
- placing the coil-shaped metal wire coated with the covering material in a shaping mold;
- filling an element material around the coated coil-shaped metal wire so as to form a compact unbaked chip element with the coated coil-shaped metal wire provided at a predetermined position;
- and
- baking the unbaked chip element in order to eliminate the covering material so as to form a substantially cylindrical gap between the coil-shaped metal wire and the element material for accommodating the portions adjacent to each other with respect to the axial direction of the coil-shaped metal wire.
A method for reducing stress between an internal conductor and a chip element of an inductor, said method comprising the steps of:
- coating the internal conductor with a covering material;
- placing an element material around the coated internal conductor to form an unbaked chip element;
- and
- baking the unbaked chip element in order to eliminate the covering material so as to form a gap between the internal conductor and the element material,
- wherein stress is reduced as a result of the gap between the internal conductor and the element material.
A method for producing an inductor having an internal conductor comprising a coil-shaped metal wire, said method comprising the steps of:
- covering portions of the coil-shaped metal wire which are adjacent to each other with respect to an axial direction of the coil-shaped metal wire integrally with a covering material;
- placing the coated internal conductor in a shaping mold;
- filling an element material around the coated coil-shaped metal wire and in a through hole formed with respect to the axial direction of the coated coiled-shaped metal wire so as to form a compact unbaked chip element with coil-shaped metal wire provided at a predetermined position;
- and
- baking the unbaked chip element in order to eliminate the covering material so as to form a substantially cylindrical gap between the coil-shaped metal wire and the element material integrally accommodating the portions adjacent to each other with respect to the axial direction of the coil shaped metal wire.
Dependencies are inferred from the claim text.