IP Library › Granted Patent US 8,878,640
Granted Patent B2
US 8,878,640 · App. 14/189,191 · Granted Nov 4, 2014

Common-mode choke coil

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Quick Facts
Patent No.
US 8,878,640
App. No.
14/189,191
Filed
Feb 25, 2014
Granted
Nov 4, 2014
Kind
B2
Art Unit
2837
USPC
336/90
Abstract

A common mode choke coil includes a quadrilateral core 4 ; first and second core covers 2, 3 disposed opposite to each other on the upper and lower surfaces of the core 4 so as to cover the outer periphery of the core 4 ; and rectangular copper wires 8 wound on the opposite side portions of the core 4 of the first and second core covers 2, 3 . The second core cover 3 is disposed on a component-mounting face. The first and second core covers 2, 3 include a pair of linear portions surrounding the corresponding opposite sides of the core 4 which linear portions constitute winding portions 5 . The lower surface of the second core cover 3 has a pedestal portion 6 which protrudes more toward the component-mounting face than the winding portions 5 , and extends out along the component-mounting face in a direction perpendicular to axis lines of the winding portions 5 . The lower face at the tip of the protruding part of the pedestal portion 6 has seat faces 6 a on which parts of the rectangular copper wires 8 drawn from the winding portions 5 toward the component-mounting face are provided as mounting terminals 12 . Tip portions of the rectangular copper wires 8 are bent upward from the seat faces 6 a at the edge of the tip of the protruding part of the pedestal portion.

Claims (9)

1. A common mode choke coil comprising:

a quadrilateral core;

first and second core covers disposed opposite to each other on the upper and lower surfaces of the core so as to cover the outer periphery of the core; and

rectangular copper wires extending from the outer peripheries of the first and second core covers and wound on the opposite side portions of the core;

wherein the second core cover is disposed on a component-mounting face of a circuit board;

wherein the first and second core covers include a pair of linear portions surrounding the corresponding opposite sides of the core which linear portions constitute winding portions of the rectangular copper wires, and the lower surface of the second core cover is provided with a pedestal portion that is integrally formed therewith, wherein the pedestal portion protrudes more toward the component-mounting face than the winding portions, and extends out along the component-mounting face in a direction perpendicular to axis lines of the winding portions; and

wherein the lower face at the tip of the protruding part of the pedestal portion is provided with seat faces on which parts of the rectangular copper wires drawn from the winding portions toward the component-mounting face are provided as mounting terminals, and tip portions of the rectangular copper wires are bent upward from the seat faces at the edge of the tip of the protruding part of the pedestal portion.

2. The common mode choke coil according to claim 1 , wherein the seat faces form recesses at which one and the other ends of the rectangular copper wires are positioned, respectively.

3. The common mode choke coil according to claim 1 , further comprising a top panel having a flat portion, the top panel being removably mounted on the top portion of the first core cover.