# US 2014/0191836 A1 · Magnetic element

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- Number: US 2014/0191836 A1
- Document ID: US20140191836A1
- Status: Published application
- Kind: A1
- Application number: 14/067,297
- Filed: 2013-10-30
- Published: 2014-07-10
- Earliest claimed: 2013-01-08
- Assignees: Delta Electronics, Inc.
- Applicants: Delta Electronics, Inc.
- Inventors: Tsung-Hsiao WU
- Web page: https://patentgrep.com/patent/US20140191836A1

## CPC

- H01F 27/29: Terminals; Tapping arrangements {for signal inductances}
- H01F 27/292: {Surface mounted devices}
- H01F 2027/297: {with pin-like terminal to be inserted in hole of printed path}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

A magnetic element is provided, including a magnetic core set, a bobbin, at least a wire, and an insulating base. The bobbin has a channel and a plurality of conductive pins, wherein the channel penetrates through the bobbin, and the magnetic core set is coupled with the channel. The wire is wound around the bobbin and connected to the conductive pins. The insulating base is connected to a bottom surface of the magnetic core set after the wire is wound around the bobbin and connected to the conductive pins, wherein the insulating base includes a plurality of protrusions adjacent to the conductive pins, respectively.

## Claims

### Claim 1

A magnetic element, comprising:
a magnetic core set, including a first magnetic core and a second magnetic core, wherein the first magnetic core and the second magnetic core respectively include a first magnetic block and a second magnetic block;
a bobbin, including a channel and a plurality of conductive pins, wherein the channel penetrates through the bobbin for receiving the first magnetic blocks of the first magnetic core and the second magnetic core;
at least a wire, wound around the bobbin and connected to the conductive pins, wherein the bobbin forms two side-walls with a groove formed therebetween for receiving the wire, and two ends of each of the side-walls respectively have a guiding wall with the conductive pins disposed thereon, wherein the magnetic core set is retained by the guiding walls; and
an insulating base, contacting to a bottom surface of the magnetic core set after the wire is wound around the bobbin and connected to the conductive pins, wherein the second blocks of the first magnetic core and the second magnetic core are disposed between the insulating base and the bobbin, and the insulating base includes a plurality of protrusions adjacent to the conductive pins, respectively.

### Claim 2 (depends on 1)

The magnetic element as claimed in claim 1, wherein the insulating base further includes a main body and two restricting structures protruding from two ends of the main body, respectively, wherein the main body and the restricting structures form a receiving space with the magnetic core set disposed therein.

### Claim 3 (depends on 2)

The magnetic element as claimed in claim 2, wherein the magnetic core set is against the restricting structures.

### Claim 4 (depends on 2)

The magnetic element as claimed in claim 2, wherein the restricting structures are against the side-walls of the bobbin respectively.

### Claim 5 (depends on 2)

The magnetic element as claimed in claim 2, wherein the magnetic core set is against the restricting structures, and the restricting structures are against the side-walls of the bobbin respectively.

### Claim 6 (depends on 2)

The magnetic element as claimed in claim 2, wherein the main body has a hollow corresponding to an adjoining surface between the second blocks of the first magnetic core and the second magnetic core.

### Claim 7 (depends on 6)

The magnetic element as claimed in claim 6, wherein the magnetic core set is against the restricting structures.

### Claim 8 (depends on 6)

The magnetic element as claimed in claim 6, wherein the restricting structures are against the side-walls of the bobbin respectively.

### Claim 9 (depends on 6)

The magnetic element as claimed in claim 6, wherein the magnetic core set is against the restricting structures, and the restricting structures are against the side-walls of the bobbin respectively.

### Claim 10 (depends on 1)

The magnetic element as claimed in claim 1, wherein the insulating base further includes a main body having a hollow corresponding to an adjoining surface between the second blocks of the first magnetic core and the second magnetic core.

### Claim 11 (depends on 1)

The magnetic element as claimed in claim 1, wherein the magnetic element is disposed on a circuit board, and the insulating base is disposed between the circuit board and the magnetic core set, wherein the conductive pins electrically connect to the circuit board, and the protrusions contact the circuit board to stand the magnetic element on the circuit board stably.

### Claim 12 (depends on 1)

The magnetic element as claimed in claim 1, the insulating base further includes a main body and the protrusions are formed at corners of a bottom surface of the main body.