Inductor

• US 7,397,338 B2
• Filed: 03/07/2007
• Issued: 07/08/2008
• Est. Priority Date: 03/16/2006
• Status: Active Grant

• Current Assignee: Sumida Corporation
• Original Assignee: Sumida Corporation
• Inventors: Sano, Kan, Kamio, Yuichi
• Primary Examiner(s): Mai; Anh T
• Application Number:
  US11/683,126
• Publication Number:
  US 20070216512A1
• Time in Patent Office: 489 Days
• Field of Search: 336/212, 336/83, 336/220, 336/223, 336/232, 336/200, 336/198, 336/192
• US Class Current: 336/212
• CPC Class Codes: H01F 17/043 with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)
• CPC Class Codes: H01F 27/255 made from particles H01F27/26 takes precedence
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 27/324 Insulation between coil and core, between different winding sections, around the coil; Other insulation structures

Abstract

In substrate-mounting type inductor having a winding having conductivity, a core on which the winding is winded, and a terminal portion arranged at an end of the winding, a recessed portion which is recessed in a direction of height of the core is formed on a substrate mounting surface of the core, and the terminal portion is arranged to be housed in the recessed portion through an insulating member.

Claims

1. A substrate-mounting type inductor having:

a conductive winding;

a core on which the conductive winding is wound; and

an insulating member;

the conductive winding comprising;

a terminal portion located at an end of the conductive winding;

the core comprising;

a recessed portion which is recessed in a height direction of the core and formed on a substrate mounting surface of the core;

wherein the terminal portion is arranged to be housed in the recessed portion;

wherein the insulating member is located between the terminal portion and the recessed portion; and

wherein the insulating member does not extend away from the substrate mounting surface of the core.

2. The inductor according to claim 1;

wherein a part of the terminal portion and a part of the insulating member are coplanar with a surface of the core.

3. The inductor according to claim 1;

the core further comprising;

an E-type core comprising a middle leg which supports the conductive winding; and

a plate-like I-type core arranged to cover an open surface of the E-type core.

4. The inductor according to claim 3;

wherein the recessed portion is formed on a surface of the I-type core.

5. The inductor according to claim 1;

wherein the conductive winding further comprises a flat wire, and an end of the flat wire is used as the terminal portion.

6. The inductor according to claim 5;

wherein a part of the terminal portion and a part of the insulating member are coplanar with a surface of the core.

7. The inductor according to claim 5;

the core further comprising;

an E-type core comprising a middle leg which supports the conductive winding; and

a plate-like I-type core arranged to cover an open surface of the E-type core.