COIL COMPONENT

• US 20170316873A1
• Filed: 03/27/2017
• Published: 11/02/2017
• Est. Priority Date: 04/28/2016
• Status: Active Grant

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: IGARASHI, Akio, MURAKAMI, Takashi, ONISHI, Koji
• Granted Patent: US 10,163,559 B2
• Time in Patent Office: Days
• 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 2017/0093 Common mode choke coil
• CPC Class Codes: H01F 27/2823 Wires H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 3/10 Composite arrangements of magnetic circuits

Abstract

A terminal electrode includes a base extending along the outer end face of a flange, a mounting part extending from the base along the bottom face of the flange via a first bending part that covers the edge portion where the outer end face and the bottom face meet, and a wire connection part extending from the base along a substantially horizontal face via a second bending part that covers the edge portion where the outer end face and the substantially horizontal face meet, the wire connection part being electrically connected to an end portion of a wire.

Claims

1. A coil component comprising:

a substantially drum-shaped core having a core part, and a flange provided on an end portion of the core part, the flange including

an inner end face facing toward the core part and where the end portion of the core part is positioned,

an outer end face located opposite to the inner end face and facing outward,

a bottom face that connects the inner end face with the outer end face, the bottom face being oriented toward a mount board when the coil component is mounted onto the mount board,

a top face located opposite to the bottom face, and

a pair of side faces, the side faces extending to connect the bottom face with the top face and being opposite to each other;

a wire wound on the core part; and

a terminal electrode electrically connected to an end portion of the wire and fixed to the flange,

wherein the flange has a depression in an end portion of at least one of the side faces near the bottom face, the depression being in a form of a cutout defined by a substantially horizontal face extending along the bottom face and a substantially vertical face extending along the at least one of the side faces, and

wherein the terminal electrode includes

a base positioned on the outer end face of the flange,

a mounting part used to electrically connect the coil component to an electrically conductive part of the mount board, the mounting part extending from the base so as to be positioned above the bottom face of the flange via a first bending part that covers an edge portion where the outer end face and the bottom face meet, and

a wire connection part that extends from the base so as to be positioned above the substantially horizontal face via a second bending part that covers an edge portion where the outer end face and the substantially horizontal face meet, the wire connection part being electrically connected to the end portion of the wire.

2. The coil component according to claim 1,

wherein the wire connection part includes

a wire receiving part that extends along the substantially horizontal face from the base via the second bending part, and receives the end portion of the wire, and

a wire welding part that extends from a distal end portion of the wire receiving part via a fold-back part such that the wire welding part overlaps the wire receiving part, the wire welding part being welded to the end portion of the wire.

3. The coil component according to claim 1,

wherein when viewed in a direction perpendicular to the outer end face of the flange, the substantially vertical face has a length greater than a length of the substantially horizontal face.

4. The coil component according to claim 1,

wherein the wire connection part fits within a space defined by the depression.