COIL COMPONENT AND ELECTRONIC DEVICE

• US 20200135385A1
• Filed: 10/16/2019
• Published: 04/30/2020
• Est. Priority Date: 10/30/2018
• Status: Active Grant

• Current Assignee: Taiyo Yuden Company Limited (Taiyo Yuden Co)
• Original Assignee: Taiyo Yuden Company Limited (Taiyo Yuden Co)
• Inventors: SHIMIZU, Makoto, KASHIWA, Tomoo
• Granted Patent: US 11,443,891 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 2027/065 Mounting on printed circuit boards
• CPC Class Codes: H01F 27/06 Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
• CPC Class Codes: H01F 27/24 Magnetic cores
• 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: H05K 1/181 associated with surface mounted components
• CPC Class Codes: H05K 2201/1003 Non-printed inductor
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

A coil component includes: a core part including: a winding shaft; and a flange part provided on an axial-direction end of the winding shaft, which has an exterior face on the opposite side of the winding shaft, first and second side faces, and first and second groove parts provided on the exterior face and having a cut-out part on each the first and second side faces; a coil part including: a winding part of a conductor wound around the winding shaft; and two lead parts of the conductor led out from the winding part; and two terminal parts formed on the exterior face of the flange part; wherein the two lead parts are led in from the cut-out parts on the first and second side faces and fitted inside the groove parts, respectively, on the exterior face, and included in the pair of terminal parts, respectively.

Claims

1. A coil component comprising:

a core part including;

a winding shaft; and

a flange part provided on an axial-direction end of the winding shaft, wherein the flange part has;

an exterior face on an opposite side of the winding shaft,

a pair of a first side face and a second side face that are adjoining the exterior face and located opposite to each other, and

first and second groove parts provided on the exterior face, which are isolated from each other or connected to each other on the exterior face, wherein the first and second groove parts extend to the first side face and the second side face, respectively, via a cut-out part provided on each of the first side face and the second side face;

a coil part including;

a winding part constituted by a conductor with an insulating film, which is wound around the winding shaft; and

a pair of lead parts that are portions of the conductor led out from the winding part; and

a pair of terminal parts formed on the exterior face of the flange part;

wherein one of the pair of lead parts is led in from the cut-out part on the first side face of the flange part and fitted inside the first groove part provided on the exterior face, and included in one of the pair of terminal parts; and

another of the pair of lead parts is led in from the cut-out part on the second side face of the flange part and fitted inside the second groove part provided on the exterior face, and included in another of the pair of terminal parts.

2. The coil component according to claim 1, wherein the first and second groove parts are connected to each other on the exterior face and represent one groove part having the cut-out parts on the first side face and the second side face, respectively.

3. The coil component according to claim 1, wherein the first and second groove parts are isolated from each other on the exterior face and represent two groove parts, each having the cut-out part on either the first side face or the second side face.

4. The coil component according to claim 3, wherein the two groove parts are aligned along one straight line roughly parallel with one side of the exterior face as viewed toward the exterior face in the axial direction of the winding shaft.

5. The coil component according to claim 1, wherein the first and second groove parts are provided at positions where the first and second groove parts partially overlap the winding shaft as viewed toward the exterior face in the axial direction of the winding shaft.

6. The coil component according to claim 5, wherein the first and second groove parts are provided in a manner fitting inside positions entirely overlapping the winding shaft in a width direction of the first and second groove parts as viewed toward the exterior face in the axial direction of the winding shaft.

7. The coil component according to claim 1, wherein:

the winding shaft is provided in a manner that a center axis of the winding shaft is offset from a center of the exterior face; and

the first and second groove parts are provided in a manner offset in a direction opposite to a direction in which the center axis is offset from the center of the exterior face.

8. An electronic device comprising:

the coil component of claim 1; and

a circuit board on which the coil component is mounted.