Common mode choke coil

Patent metadata

Field	Value
Publication number	US-2016365191-A1
Application number	US-201615173421-A
Country	US
Kind code	A1
Filing date	Jun 3, 2016
Priority date	Jun 9, 2015
Publication date	Dec 15, 2016
Grant date	—

Abstract

In an embodiment, a common mode choke coil 10 includes a drum core 12, coil part 30, and terminal electrodes 40, 42, 44, 46. The drum core 12 has a shaft part 14 and flange parts 16, 22, and conductive wires 32, 34 are wound around the outer periphery face of the shaft part 14 in the same winding direction by the same number of windings, with leader parts 32 A, 32 B, 34 A, 34 B led from both ends thereof. The flange parts 16, 22 have side face grooves 18, 20, 24, 26 on their side faces 16 C, 16 D, 22 C, 22 D, inside which side face grooves the engagement parts 40 A, 42 A, 44 A, 46 A are provided and positioned across the center of the flange part 16 or 22 in the height direction, where the leader parts 32 A, 32 B, 34 A, 34 B are electrically connected to the terminal electrodes 40, 42, 44, 46.

First claim

We/I claim:

1 . A common mode choke coil, comprising:
a drum core having a shaft part and flange parts positioned on both ends thereof; a coil part having a winding part constituted by conductive wires wound around the shaft part, as well as leader parts led from the winding part; and terminal electrodes having engagement parts that are electrically connected to the leader parts; the common mode choke coil characterized in that: the coil part has two conductive wires wound in a same winding direction by a same number of windings around the shaft part; the flange parts each have a bottom face on a board-mounted side as well as side faces intersecting with the bottom face, with each side face having a side face groove; and the engagement parts are each provided in the side face groove and, when viewed from the bottom face, positioned across a center of the flange part in a height direction.

2 . A common mode choke coil according to claim 1 , characterized in that, in a section of the shaft part crossing at right angles with an axial direction at a center of the shaft part in a length direction, a maximum dimension of the shaft part in a width direction parallel with the bottom face is greater than a maximum dimension of the shaft part in the height direction vertical to the bottom face.

3 . A common mode choke coil according to claim 1 , characterized in that:
it has a sheet core assembled onto a top face of the flange part; and in a section of the shaft part crossing at right angles with an axial direction at a center of the shaft part in a length direction, a cross-section area of the sheet core is greater than a cross-section area of the shaft part.

4 . A common mode choke coil according to claim 2 , characterized in that:
it has a sheet core assembled onto a top face of the flange part; and in a section of the shaft part crossing at right angles with an axial direction at a center of the shaft part in a length direction, a cross-section area of the sheet core is greater than a cross-section area of the shaft part.

Assignees

• Taiyo Yuden Kk

Inventors

• Horie Katsuyuki
• Iwao Hidemi
• Nogi Kenichiro

Classifications

• H01F27/29

  Terminals; Tapping arrangements {for signal inductances} · CPC title

• H01F27/24

  Magnetic cores · CPC title

• H01F27/292 Primary

  Surface mounted devices · CPC title

• H01F2027/2838

  using transposed wires · CPC title

• H01F27/2823 Primary

  Wires (H01F27/2866 takes precedence) · CPC title