Inductor

Patent metadata

Field	Value
Publication number	US-11469034-B2
Application number	US-202016887925-A
Country	US
Kind code	B2
Filing date	May 29, 2020
Priority date	Jul 27, 2019
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

Anchor conductors extending from internal terminal conductors and being in contact with a component body are provided inside the component body. The anchor conductors are provided so as not to be connected to a coil conductor including a circulating portion, and so as not to be exposed on an outer surface of the component body. The anchor conductors are in contact with the component body to thereby enhance fixing force of the internal terminal conductors to the component body.

First claim

What is claimed is:

1. An inductor comprising:
a component body made of a non-conductive material;
a coil conductor disposed inside the component body, and including a first end portion and a second end portion opposite to each other, and a circulating portion between the first end portion and the second end portion;
a first extended conductor and a second extended conductor respectively connected to the first end portion and the second end portion of the coil conductor;
a first internal terminal conductor and a second internal terminal conductor respectively connected to the first extended conductor and the second extended conductor, and partially exposed on an outer surface of the component body while being disposed so as to be embedded inside the component body; and
a first anchor conductor and a second anchor conductor respectively extending from the first internal terminal conductor and the second internal terminal conductor in a state of being in contact with the component body, and out of connection with the coil conductor.

2. The inductor according to claim 1 , wherein
the first anchor conductor and the second anchor conductor are inside the component body and not exposed on the outer surface of the component body.

3. The inductor according to claim 1 , wherein
the component body includes a mounting surface facing a side of the mounting substrate, a top surface facing the mounting surface, a first side surface and a second side surface connecting between the mounting surface and the top surface and facing each other, and a first end surface and a second end surface facing each other and connecting both between the mounting surface and the top surface and between the first side surface and the second side surface,
the first internal terminal conductor and the second internal terminal conductor are separated from each other and are respectively exposed to a side of the first end surface and a side of the second end surface on the mounting surface, and
the first internal terminal conductor is exposed on the first end surface while continuing to a portion exposed on the mounting surface, and the second internal terminal conductor is exposed on the second end surface while continuing to a portion exposed on the mounting surface.

4. The inductor according to claim 3 , wherein
a coil axis of the coil conductor extends in a direction parallel to the mounting surface.

5. The inductor according to claim 4 , wherein
the component body includes a plurality of non-conductive material layers that extends in a direction in which the first side surface and the second side surface extend and that is laminated in a direction parallel to the mounting surface, and
the first internal terminal conductor and the second internal terminal conductor are provided so as to penetrate through the plurality of the non-conductive material layers in a laminating direction.

6. The inductor according to claim 5 , wherein
the first anchor conductor and the second anchor conductor respectively include a first anchor conductor portion and the second anchor conductor portion provided along each interface between the plurality of the non-conductive material layers.

7. The inductor according to claim 5 , wherein
the first anchor conductor and the second anchor conductor respectively include the first anchor conductor portion and the second anchor conductor portion provided to penetrate through the plurality of the non-conductive material layers in a laminating direction.

8. The inductor according to claim 3 , wherein
the first anchor conductor and the second anchor conductor respectively include a first anchor conductor portion and a second anchor conductor portion respectively extending from the first internal terminal conductor and the second internal terminal conductor toward the top surface.

9. The inductor according to claim 8 , wherein
the first anchor conductor and the second anchor conductor respectively include the first anchor conductor portion and the second anchor conductor portion forming a plurality of strip conductors each of which extends substantially in a strip shape toward the top surface.

10. The inductor according to claim 9 , wherein
the plurality of strip conductors formed by each of the first anchor conductor portion and the second anchor conductor portion respectively include strip conductors that extend parallel to each other, and that have tip end positions where distances from the tip end positions to the top surface are different from each other.

11. The inductor according to claim 8 , wherein
when the component body is perspectively viewed from the first side surface toward the second side surface, the first anchor conductor and the second anchor conductor are respectively positioned so as to at least partially respectively overlap the first extended conductor and the second extended conductor.

12. The inductor according to claim 3 , wherein
the first anchor conductor extends from the first internal terminal conductor toward the second end surface along the mounting surface, and
the second anchor conductor extends from the second internal terminal conductor toward the first end surface along the mounting surface.

13. The inductor according to claim 12 , wherein
the first anchor conductor and the second anchor conductor respectively form a plurality of strip conductors extending substantially in a strip shape along the mounting surface.

14. The inductor according to claim 13 , wherein
the plurality of strip conductors formed by the first anchor conductor includes strip conductors that extend parallel to each other, and that have tip end positions where distances from the tip end positions to the second end surface are different from each other, and
the plurality of strip conductors formed by the second anchor conductor includes strip conductors that extend parallel to each other, and that have tip end positions where distances from the tip end positions to the first end surface are different from each other.

15. The inductor according to claim 14 , wherein
tip end portions of the strip conductors formed by the first anchor conductor include a tip end portion positioned between adjacent strip conductors of the plurality of strip conductors formed by the second anchor conductor, and
tip end portions of the strip conductors formed by the second anchor conductor include a tip end portion positioned between adjacent strip conductors of the plurality of strip conductors formed by the first anchor conductor.

16. The inductor according to claim 4 , wherein
when the component body is perspectively viewed from the first side surface toward the second side surface, the coil conductor includes
a circulating portion that overlaps with at least one of the first extended conductor and the second extended conductor, or that is closer to the outer surface of the component body than at least one of the first extended conductor and the second extended conductor.

17. The inductor according to claim 1 , further comprising:
a first external terminal conductor and a second external terminal conductor provided to respectively cover exposed portions of the first internal terminal conductor and the second internal terminal conductor.

18. The inductor according to claim 17 , wherein
each of the first external terminal conductor and the second external terminal conductor includes a plating film.

19. The inductor according to claim 2 , wherein
the component body includes a mounting surface facing a side of the mounting

Assignees

• Murata Manufacturing Co

Inventors

• Mizukami Takashi
• Matsumoto Yasuo

Classifications

• H01F17/0013 Primary

  with stacked layers · CPC title

• H01F2027/2809

  on stacked layers · CPC title

• H01F27/2804 Primary

  Printed windings · CPC title

• H01F27/292

  Surface mounted devices · CPC title

• H01F2017/002

  Details of via holes for interconnecting the layers · CPC title