Coil component

• US 10,726,987 B2
• Filed: 04/23/2018
• Issued: 07/28/2020
• Est. Priority Date: 04/27/2017
• Status: Active Grant

• Current Assignee: Taiyo Yuden Company Limited (Taiyo Yuden Co)
• Original Assignee: Taiyo Yuden Company Limited (Taiyo Yuden Co)
• Inventors: Takahashi, Shintaro, Hayashi, Chiharu, Sado, Atsushi
• Primary Examiner(s): Hinson, Ronald
• Application Number:
  US15/960,380
• Publication Number:
  US 20180315537A1
• Time in Patent Office: 827 Days
• Field of Search: 336192
• CPC Class Codes: H01F 17/04 with magnetic core
• CPC Class Codes: H01F 27/02 Casings
• CPC Class Codes: H01F 27/24 Magnetic cores
• CPC Class Codes: H01F 27/263 Fastening parts of the core together
• CPC Class Codes: H01F 27/28 Coils; Windings; Conductive connections
• CPC Class Codes: H01F 27/2828 Construction of conductive connections, of leads
• CPC Class Codes: H01F 27/29 Terminals; Tapping arrangements for signal inductances
• CPC Class Codes: H01F 27/292 Surface mounted devices
• CPC Class Codes: H01F 27/306 Fastening or mounting coils or windings on core, casing or other support

Abstract

In an embodiment, a coil component includes: a core 10; a coil conductor 40 having a spiral part 42 placed inside the core 10, and a lead part 48 which is led out from the spiral part 42 to the principal outer surface, constituting the bottom face 28, of the core 10, and which includes an end part 46 that serves as an external terminal 49; an insulated terminal 60 electrically insulated from the coil conductor 40, which is fitted onto and bonded to the core 10, and which has a bottom part 64 positioned on the bottom face 28, a top part 62 positioned on the top face 26, and a side part 66 coupling the bottom part 64 and the top part 62, where the top part 62 and side part 66 have an opening 68 in which an adhesive 82 is filled.

Claims

1. A coil component, comprising:

a core;

a coil conductor comprising;

a spiral part placed inside the core; and

a lead part which is led out from the spiral part to a principal outer surface, constituting a bottom face, of the core, and which includes an end part that serves as an external terminal;

an insulated terminal electrically insulated from the coil conductor, which is snap-fitted onto and bonded to the core, and which has;

a bottom part positioned on the bottom face of the core;

a top part positioned on a top face opposite the bottom face; and

a side part coupling the bottom part and the top part;

where the top part and side part have an opening; and

an adhesive filled in the opening in the insulated terminal.

2. The coil component, according to claim 1, wherein the opening extends continuously from the top part to the side part.

3. The coil component according to claim 1, wherein the insulated terminal has a plurality of the openings in at least the top part or the side part.

4. The coil component according to claim 1, wherein the insulated terminal is bonded to the core at the top part and the side part, but not bonded to the core at the bottom part.

5. The coil component according to claim 1, wherein the insulated terminal comprises the top part, the bottom part, and the side part coupling the top part and the bottom part, where the bottom part is shaped to have a larger area than does the top part.

6. The coil component according to claim 1, wherein the opening is a circle or oval.

7. The coil component according to claim 3, wherein the plurality of the openings are provided in a lattice or staggered pattern.