An inductor component having such a characteristic property that the assembly of the inductor component can be made simple and the welded state in the inductor component can be made stable. The inductor component comprises a ring-shaped core; a coil which comprises a plurality of pin members, and in which adjacent pin members are connected and are wound around the coil; and a connecting member which connects the pin members adjacent to each other in a direction of an axis of the coil.

An inductor includes an annular core, and a first coil and a second coil which are wound around the core. The core has an internal surface, an external surface, a first end surface, and a second end surface. The first coil and the second coil include a first coil piece having a length of one turn and a second coil piece having a length of one turn. The first coil piece and the second coil piece surround the internal surface, the first end surface, the external surface, and the second end surface of the core. The first coil piece has, at its tip, a joint portion to be joined to the second coil piece, and the second coil piece has, at its tip, a joint surface to be in contact with the joint portion. Thus, the resistance value of the coil is reduced.

The invention comprises a fabricated inductor winding apparatus and method of use/manufacture thereof, where the inductor has a core and a fabricated winding. The fabricated winding comprises a plurality of turns, a first turn of the plurality of turns comprising a first sub-section and a second sub-section, the first sub-section electrically connected to the second sub-section with a first non-wire electrical connection during an assembly step of the inductor and the second sub-section of the first turn electrically connected to a second turn with a second electrical connection formed during a winding step.

An inductor component and a method for manufacturing an inductor component that enables miniaturization of the inductor component. An inductor component includes an annular core; and a coil including a plurality of pin members and wound on the core with neighboring pin members connected to each other. A first pin member and a second pin member both adjacent to each other have a welded part in which an end face of an end part of the first pin member and a peripheral surface of an end part of the second pin member are welded to each other. The welded part is not provided on an outer side edge of the second pin member as viewed from a direction orthogonal to a first plane containing a center line of the end part of the first pin member and a center line of the end part of the second pin member.

An inductor component and a method for manufacturing an inductor component that enables the inductor component to be miniaturized. An inductor component includes an annular core; and a coil including a plurality of pin members and wound on the core with neighboring pin members connected to each other. A first pin member and a second pin member both adjacent to each other have a welded part in which an end part of the first pin member and an end part of the second pin member are welded to each other, and the end part of the second pin member has a constricted part whose width is narrower.

An inductor component and a method for manufacturing an inductor component that enables the inductor component to be miniaturized. An inductor component includes an annular core; and a coil including a plurality of pin members and wound on the core with neighboring pin members connected to each other. A first pin member and a second pin member both adjacent to each other have a welded part in which an end face of an end part of the first pin member and a peripheral surface of an end part of the second pin member are welded to each other. A width of a part, of the first pin member, except the welded part is smaller, as viewed from a direction along a center line of the end part of the second pin member, than a width of a part, of the second pin member, except the welded part.

A coil component according to the present disclosure comprises a ring-shaped core; an insulating member which covers a portion of the ring-shaped core; and a coil which is wound around the core and the insulating member. The coil comprises a plurality of pin members in which end portions of adjacent pin members share a welded portion at which the end portions are welded to each other, and the insulating member is located between the welded portion and the core. Thus, an inductance value of an inductor component can be improved.

In some examples, an isolation transformer can include a first wire having a first insulation thickness and a second wire having a second insulation thickness that is different than the first insulation thickness. The isolation transformer can further include a plurality of magnetic cores of magnetic material that can be configured to surround portions of each of the first and second wires along respective circumferences of the first and second wires to provide the isolation transformer.

An inductor component comprises a ring-shaped core; and a coil wound around the core and comprising wire members each constituting a single turn. Each of the wire members has a first side portion facing an inner peripheral surface of the core, a second side portion facing a first end surface that is one end surface of the core and is located in a direction of a center axis of the core, a third side portion facing an outer peripheral surface of the core, and a fourth side portion facing a second end surface that is the other end surface of the core and is located in the direction of the center axis of the core. At least one of the second and third side portions has a bent portion protruding on the core side, and the first and fourth side portions of adjacent wire members are connected.

A coil conductor having a multilayer part, wherein the multilayer part includes conductive plate pieces, and surfaces of the conductive plate pieces are electrically connected to each other in a laminating direction. Accordingly, an aspect ratio (cross-sectional thickness/cross-sectional width) of the cross section of the coil conductor can be close to one, and in some cases, it can be one or more.