Coil component

• US 9,202,620 B2
• Filed: 07/28/2014
• Issued: 12/01/2015
• Est. Priority Date: 08/08/2013
• Status: Active Grant

• Current Assignee: Epcos AG (TDK Corporation), TDK Corporation
• Original Assignee: Epcosag, TDK Corporation
• Inventors: Arimitsu, Kazunori, Suzuki, Hiroshi, Sasaki, Hideki, Komaya, Yuma, Suto, Tomonao, Schliewe, Joern, Nassal, Joachim, Drespling, Anneliese
• Primary Examiner(s): Lian, Mangtin
• Application Number:
  US14/444,304
• Publication Number:
  US 20150042436A1
• Time in Patent Office: 491 Days
• Field of Search: 336/83, 336/192
• US Class Current: 1/1
• CPC Class Codes: H01F 17/045 with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 27/292 Surface mounted devices

Abstract

In a coil component, a shortest distance from a longitudinal wall of a flange portion of a drum core to a wire fixing portion is smaller than a shortest distance of the longitudinal wall to an electrode wire connecting portion by a convex portion formed at the longitudinal wall of the flange portion. That is, since a gap between the flange portion of the drum core and the wire fixing portion is small (or there is no gap), the wire fixing portion can be sufficiently bent. Accordingly, the wire can be securely fixed by a wire fixing portion of a metal terminal.

Claims

1. A coil component comprising:

a drum core having a pair of flange portions having a mounting surface enabling to face to a mounting substrate and side surfaces crossing the mounting surface, and a core portion configured to connect the pair of flange portions to each other;

a wire wound on the core portion of the drum core; and

a metal terminal having a mounting portion disposed at the mounting surface of first flange portion of the pair of flange portions, a wire fixing portion configured to fix the wire and extending from the mounting portion, and a wire connecting portion welded to an end of the wire, the wire fixing portion and the wire connecting portion being located on a same side with respect to the first flange portion,

wherein a shortest distance from the side surface of the first flange portion to the wire fixing portion is smaller than a shortest distance from the side surface of the first flange portion to the wire connecting portion

wherein the wire fixing portion includes a planar surface;

the wire connecting portion includes a planar surface;

the planar surface of the wire fixing portion and the planar surface of the wire connecting portion are parallel and side by side with each other and face the side surface of the first flange portion; and

a shortest distance from the side surface of the first flange portion to the planar surface of the wire fixing portion is smaller than a shortest distance from the side surface of the first flange portion to the planar surface of the wire connecting portion.

2. The coil component according to claim 1, wherein a convex portion is formed at a surface region corresponding to the wire fixing portion of the side surfaces of the first flange portion.

3. The coil component according to claim 2, wherein the convex portion is inclined such that a width of the convex increases away from the mounting surface.

4. The coil component according to claim 1,

wherein the core portion elongates between the pair of flange portions in a longitudinal direction, and

the metal terminal further comprises an end face portion, the wire connecting portion being located between the end-face portion and the wire fixing portion in the longitudinal direction.