IP Library › Granted Patent US 11,837,396
Granted Patent B2
US 11,837,396 · App. 16/264,368 · Granted Dec 5, 2023

Common-mode choke coil

Inventors: Kazuhiko Takenaka (Nagaokakyo, JP); Shigeto Yamamoto (Nagaokakyo, JP); Ryota Hashimoto (Nagaokakyo, JP); Akio Igarashi (Nagaokakyo, JP); Yuki Kanbe (Nagaokakyo, JP)
Assignee: Murata Manufacturing Co., Ltd.
H01F27/2823H01F17/04H01F27/29H01F2017/0093
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Quick Facts
Patent No.
US 11,837,396
App. No.
16/264,368
Granted
Dec 5, 2023
Kind
B2
Abstract

A coil component includes a drum core that includes a winding core portion and a pair of flange portions formed at the ends of the winding core portion, electrodes that are included in the pair of flange portions, and first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes. The flange portions are continuous with the winding core portion and have slopes that guide the extended portions to the electrodes.

Claims (56)

1. A common-mode choke coil comprising:

a core that includes a winding core portion, a plate core, and a pair of flange portions formed at ends of the winding core portion;

electrodes that are included on a side of the pair of flange portions that is opposite to the plate core; and

first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes on the side of the pair of flange portions that is opposite to the plate core, wherein

the flange portions are continuous with the winding core portion and have slopes each of which guides a specific one of the extended portions to a specific one of the electrodes,

the side of the pair of flange portions that is opposite to the plate core includes a pair of mounting surfaces that are spaced apart from each other and a pair of outer recesses that are spaced apart from each other with the pair of mounting surfaces therebetween, the outer recesses each being adjacent to a respective mounting surface,

the mounting surfaces project further in a heightwise direction relative to the plate core than the outer recesses,

each electrode extends from one of the mounting surfaces to the adjacent outer recess, and

each specific extended portion of the first and second wires is attached to each respective specific electrode at the respective outer recess.

2. The common-mode choke coil according to claim 1 , wherein

the pair of flange portions each have one of the slopes.

3. The common-mode choke coil according to claim 1 , wherein

facing surfaces of the pair of flange portions that face each other have the slopes, and

when viewed in a direction in which the pair of flange portions are arranged, the first and second wires are hidden by end surfaces of the pair of flange portions that are opposite to the facing surfaces of the pair of flange portions.

4. The common-mode choke coil according to claim 1 , wherein

the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface.

5. The common-mode choke coil according to claim 1 , wherein

the extended portions are shaped so as to follow shapes of the slopes.

6. The common-mode choke coil according to claim 1 , wherein

the slopes each have a groove having a substantially semicircular cross-sectional shape and in which one of the extended portions is fitted.

7. The common-mode choke coil according to claim 1 , wherein

an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees.

8. The common-mode choke coil according to claim 2 , wherein

facing surfaces of the pair of flange portions that face each other have the slopes, and

when viewed in a direction in which the pair of flange portions are arranged, the first and second wires are hidden by end surfaces of the pair of flange portions that are opposite to the facing surfaces of the pair of flange portions.

9. The common-mode choke coil according to claim 2 , wherein

the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface.

10. The common-mode choke coil according to claim 3 , wherein

the slopes are hidden when viewed in a direction that is perpendicular to the direction in which the pair of flange portions are arranged and that is parallel to a mounting surface.

11. The common-mode choke coil according to claim 2 , wherein

the extended portions are shaped so as to follow shapes of the slopes.

12. The common-mode choke coil according to claim 3 , wherein

the extended portions are shaped so as to follow shapes of the slopes.

13. The common-mode choke coil according to claim 4 , wherein

the extended portions are shaped so as to follow shapes of the slopes.

14. The common-mode choke coil according to claim 2 , wherein

the slopes each have a groove having a substantially semicircular cross-sectional shape and in which one of the extended portions is fitted.

15. The common-mode choke coil according to claim 3 , wherein

the slopes each have a groove having a substantially semicircular cross-sectional shape and in which one of the extended portions is fitted.

16. The common-mode choke coil according to claim 4 , wherein

the slopes each have a groove having a substantially semicircular cross-sectional shape and in which one of the extended portions is fitted.

17. The common-mode choke coil according to claim 5 , wherein

the slopes each have a groove having a substantially semicircular cross-sectional shape and in which one of the extended portions is fitted.

18. The common-mode choke coil according to claim 2 , wherein

an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees.

19. The common-mode choke coil according to claim 3 , wherein

an inclination angle of each of the slopes is within a range of about 5 degrees to about 20 degrees.

20. A common-mode choke coil comprising:

a core that includes a winding core portion, a plate core, and a pair of flange portions formed at ends of the winding core portion;

electrodes that are included on a side of the pair of flange portions that is opposite to the plate core; and

first and second wires that are wound around the winding core portion and that include extended portions electrically connected to the electrodes on the side of the pair of flange portions that is opposite to the plate core, wherein

the flange portions are continuous with the winding core portion and have a slope which guides a specific one of the extended portions to a specific one of the electrodes,

the side of the pair of flange portions that is opposite to the plate core includes a pair of mounting surfaces that are spaced apart from each other and a pair of outer recesses that are spaced apart from each other with the pair of mounting surfaces therebetween, the outer recesses each being adjacent to a respective mounting surface,

the mounting surfaces project further in a heightwise direction relative to the plate core than the outer recesses,

each electrode extends from one of the mounting surfaces to the adjacent outer recess, and

each specific extended portion of the first and second wires is attached to each respective specific electrode at the respective outer recess.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 31, 2019
From: TAKENAKA, KAZUHIKO; YAMAMOTO, SHIGETO; HASHIMOTO, RYOTA; IGARASHI, AKIO; KANBE, YUKI
To: MURATA MANUFACTURING CO., LTD.
Reel/Frame 048213/0886 →
Priority Claims (2)
JP 2018-018566 · Feb 5, 2018 · national
JP 2018-193327 · Oct 12, 2018 · national
Continuity (1)
Related Publication 20190244744A1 · Aug 8, 2019