Coil component and method for manufacturing coil component

Patent metadata

Field	Value
Publication number	US-10643786-B2
Application number	US-201715840148-A
Country	US
Kind code	B2
Filing date	Dec 13, 2017
Priority date	Jan 27, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

A coil component includes an edgewise coil and a bobbin around which the edgewise coil is wound. The bobbin includes a tubular bobbin body, and plural position-limiting protruding portions arranged in plural portions on the outer peripheral surface of the bobbin body and limit the position of each winding portion of the edgewise coil in the axial direction of the bobbin body. The plural position-limiting protruding portions include first and second position-limiting protruding portions, which are disposed at different positions in the axial direction of the bobbin body. The edgewise coil includes a first winding portion that is in pressure contact with the first position-limiting protruding portion toward the second position-limiting protruding portion, and a second winding portion that is in pressure contact with the second position-limiting protruding portion toward the first position-limiting protruding portion.

First claim

What is claimed is:

1. A coil component, comprising:
an edgewise coil extending in an axial direction, the edgewise coil being formed by winding a flat wire, the edgewise coil having a first winding portion at one end side of the edgewise coil along the axial direction and a second winding portion at the other end side of the edgewise coil along the axial direction; and
a bobbin around which the edgewise coil is wound, the bobbin including:
a tubular bobbin body extending in the axial direction; and
a plurality of position-limiting protrusions arranged along the axial direction on an outer peripheral surface of the bobbin body, each of the plurality of position-limiting protrusions secure a position of each winding portion of the edgewise coil in the axial direction, each of the plurality of position-limiting protrusions having first and second outer walls opposite to each other in the axial direction, the first outer wall and the second outer wall facing in opposite directions,

wherein the first winding portion is in pressure contact with only the first outer wall of a first corresponding protrusion of the plurality of position-limiting protrusions, and the second winding portion is in pressure contact with only the second outer wall of a second corresponding protrusion of the plurality of position-limiting protrusions, and
the edgewise coil is in a state of space winding in which respective winding portions are spaced apart from each other in the axial direction.

2. The coil component according to claim 1 ,
wherein the edgewise coil is configured by the first winding portion, the second winding portion, and
the remaining winding portions, and are located between the first outer wall of the first corresponding protrusion and the second outer wall of the second corresponding protrusion along the axial direction.

3. The coil component according to claim 1 ,
wherein the plurality of position-limiting protrusions is configured with a plurality of groups of the position-limiting protrusions, each of the plurality of groups of the position-limiting protrusions is arranged at different positions on the outer peripheral surface of the bobbin body in a circumferential direction of the bobbin body.

4. The coil component according to claim 3 ,
wherein each of the plurality of groups of the position-limiting protrusions extends along the axial direction, and
the position-limiting protrusions in each of the plurality of groups of the position-limiting protrusions are arranged at different positions.

5. The coil component according to claim 3 , wherein the position-limiting protrusions of the plurality of groups of the position-limiting protrusions are arranged along a spirally shaped path with respect to an axis of the bobbin body.

Assignees

• Sumida Corp

Inventors

• Miyazaki Hiroyuki

Classifications

• H01F41/04

  for manufacturing coils {(coils for transformer or inductances H01F27/28)} · CPC title

• H01F5/02

  wound on non-magnetic supports, e.g. formers · CPC title

• H01F27/325 Primary

  Coil bobbins (formers for coils in general H01F5/02) · CPC title

• H01F27/306 Primary

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F41/061

  Winding flat conductive wires or sheets · CPC title