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US 11,056,273 B2Granted
Coil component
AssigneeMurata Manufacturing Co., Ltd.
InventorsYuki Kanbe, Masahiro Bando, Kenta Hino
Life of this patent
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Abstract
A coil component has a winding core part, and a plurality of wires that are wound on the winding core part to form a plurality of layers. The wires each include a conductor and a covering film that covers the conductor, an outer diameter of the wire of an n-th layer (“n” is an integer that is two or greater) is smaller than an outer diameter of the wire of an (n−1)th layer, an outer diameter of the conductor of the wire of the n-th layer is equal to an outer diameter of the conductor of the wire of the (n−1)th layer, and a thickness of the covering film of the wire of the n-th layer is smaller than a thickness of the covering film of the wire of the (n−1)th layer.
Claims4
A common choke coil comprising:
- a winding core part, and
- a first wire and a second wire that are wound on the winding core part to form a first layer and a second layer, respectively, wherein
- the first and second wires each include a conductor and only one covering film that individually covers the conductor,
- an outer diameter of the second wire constituting the second layer is smaller than an outer diameter of the first wire constituting the first layer,
- an outer diameter of the conductor of the second wire constituting the second layer is equal to an outer diameter of the conductor of the first wire constituting the first layer, and
- a thickness of the covering film of the second wire constituting the second layer is smaller than a thickness of the covering film of the first wire constituting the first layer, wherein
- the covering film of each of the first and second wires consists of only one layer consisting of resin material, and
- the number of turns of the second wire constituting the second layer is the same as the number of turns of the first wire constituting the first layer,
- wherein the common choke coil further comprises:
- a first flange part disposed on one end in an X-direction that is an axis direction of the winding core part, and a second flange part disposed on the other end in the X-direction, each of the first and second flange parts having a bottom face on one end in a Z-direction that is perpendicular to the X-direction;
- and
- first and second electrode parts which are arranged in a Y-direction that is perpendicular to the X-direction and the Z-direction on the bottom face of the first flange part, and third and fourth electrode parts which are arranged in the Y-direction on the bottom face of the second flange part,
- wherein the first and third electrode parts face each other in the X-direction, the second and fourth electrode parts face each other in the X-direction, and
- one end of the first wire is electrically connected to the first electrode part and the other end of the first wire is electrically connected to the third electrode part, one end of the second wire is electrically connected to the second electrode part and the other end of the second wire is electrically connected to the fourth electrode part, wherein
- in a cross section including an axis of the winding core part, the first wires adjacent to each other and constituting the first layer have portions that are in contact with each other, and
- in the cross section including the axis of the winding core part, the second wires adjacent to each other and constituting the second layer are not in contact with each other to have an interspace therebetween.
13 more elements
A common choke coil comprising:
- a winding core part, and
- a first wire and a second wire that are wound on the winding core part to form a first layer and a second layer, respectively, wherein
- the first and second wires each include a conductor and only one covering film that individually covers the conductor,
- an outer diameter of the second wire constituting the second layer is smaller than an outer diameter of the first wire constituting the first layer,
- an outer diameter of the conductor of the second wire constituting the second layer is equal to an outer diameter of the conductor of the first wire constituting the first layer, and
- a thickness of the covering film of the second wire constituting the second layer is smaller than a thickness of the covering film of the first wire constituting the first layer, wherein
- the covering film of each of the first and second wires consists of only one layer consisting of resin material,
- the thickness of the covering film of the second wire constituting the second layer is smaller by at least 2 μm than the thickness of the covering film of the first wire constituting the first layer, and
- the number of turns of the second wire constituting the second layer is the same as the number of turns of the first wire constituting the first layer,
- wherein the common choke coil further comprises:
- a first flange part disposed on one end in an X-direction that is an axis direction of the winding core part, and a second flange part disposed on the other end in the X-direction, each of the first and second flange parts having a bottom face on one end in a Z-direction that is perpendicular to the X-direction;
- and
- first and second electrode parts which are arranged in a Y-direction that is perpendicular to the X-direction and the Z-direction on the bottom face of the first flange part, and third and fourth electrode parts which are arranged in the Y-direction on the bottom face of the second flange part,
- wherein the first and third electrode parts face each other in the X-direction, the second and fourth electrode parts face each other in the X-direction, and
- one end of the first wire is electrically connected to the first electrode part and the other end of the first wire is electrically connected to the third electrode part, one end of the second wire is electrically connected to the second electrode part and the other end of the second wire is electrically connected to the fourth electrode part, wherein
- in a cross section including an axis of the winding core part, the first wires adjacent to each other and constituting the first layer have portions that are in contact with each other, and
- in the cross section including the axis of the winding core part, the second wires adjacent to each other and constituting the second layer are not in contact with each other to have an interspace therebetween.
14 more elements
Dependencies are inferred from the claim text.