MAGNETIC COMPONENT

• US 20110006867A1
• Filed: 08/29/2008
• Published: 01/13/2011
• Est. Priority Date: 09/10/2007
• Status: Active Grant

• Current Assignee: Sumida Corporation
• Original Assignee: Sumida Corporation
• Inventors: Hatayama, Yoshiyuki, Oki, Juichi
• Granted Patent: US 8,325,000 B2
• Time in Patent Office: Days
• US Class Current: 336/192
• 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 27/292 Surface mounted devices
• CPC Class Codes: H01F 41/10 Connecting leads to windings making electric connections in general H01R43/00

Abstract

Provided is a magnetic component capable of omitting a process of binding both ends of a lead wire to terminals and having stable connection between the lead wire and the terminals. The magnetic component is provided with a core including a spool portion around which a lead wire is wound, and external terminals to which the both ends of the lead wire are connected. Each of the external terminals includes a protruding portion (terminal end fixing portion) which is capable of receiving movement of the lead wire in a direction opposite to a winding direction, and the external terminals and the lead wire are connected to each other.

Claims

1. A magnetic component, comprising:

a core comprising a spool portion around which a lead wire is wound; and

external terminals to which both ends of the lead wire are connected,

wherein the external terminals respectively comprise a terminal end fixing portion capable of receiving movement of terminal ends of the lead wire in an unwinding direction, and

wherein the terminal ends of the lead wire are positioned by the terminal end fixing portions, and are connected to the external terminals.

2. A magnetic component according to claim 1, wherein a height L1 of each of the terminal end fixing portions is larger than a height L2 of a cross section of each of the terminal ends of the lead wire.

3. A magnetic component according to claim 1, wherein the both ends of the lead wire protrude from the core toward the same direction.

4. A magnetic component according to claim 1, wherein each of the external terminals comprises:

a mounting board connecting portion;

a plate-like protruding portion that hangs out of an outer circumference of the core and has a plate surface substantially parallel to a plane substantially orthogonal to an axial direction of the core; and

the plate-like terminal end fixing portion provided so as to be erected from the protruding portion at a predetermined angle and to form a projection portion.

5. A magnetic component according to claim 4, wherein the angle formed by the protruding portion and the terminal end fixing portion ranges from 30°

to 80°

.

6. A magnetic component according to claim 4, wherein the angle formed by the protruding portion and the terminal end fixing portion ranges from 60°

to 70°

.

7. A magnetic component according to claim 4, wherein a tip end portion of the terminal end fixing portion is bent to a side of the protruding portion.

8. A magnetic component according to claim 4, wherein the protruding portion comprising the terminal end fixing portion is individually provided on each end portion of the mounting board connecting portion.

9. A magnetic component according to claim 4, wherein a height dimension from a joint of the terminal end fixing portion to a top thereof in each of the external terminals is set larger than a height dimension of the both ends of the lead wire.

10. A magnetic component according to claim 1, wherein the core comprises a drum core, and further, a ring core is arranged on an outer circumference of the drum core,

11. A magnetic component according to claim 1, wherein the terminal ends of the lead wire and the external terminals are connected to each other by any one of connection methods selected from soldering and welding.

12. A magnetic component according to claim 1, wherein a surface of each of the terminal end fixing portions is provided at a position perpendicular with respect to the unwinding direction.