# US 12,112,874 B2 · Inductor

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- Number: US 12,112,874 B2
- Document ID: US12112874B2
- Status: Granted
- Kind: B2
- Application number: 17/266,801
- Filed: 2019-08-09
- Published: 2021-11-04
- Granted: 2024-10-08
- Earliest claimed: 2018-08-14
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Sung-Bum Jung; Jeong Il Kang
- Web page: https://patentgrep.com/patent/US12112874B2

## CPC

- H01F 3/10: Composite arrangements of magnetic circuits
- H01F 17/04: with magnetic core
- H01F 27/022: {Encapsulation}
- H01F 27/24: Magnetic cores
- H01F 27/263: {Fastening parts of the core together}
- H01F 27/266: {Fastening or mounting the core on casing or support (on coil H01F27/30)}
- H01F 27/306: {Fastening or mounting coils or windings on core, casing or other support}
- H01F 41/0206: {Manufacturing of magnetic cores by mechanical means (magnetic cores per se H01F27/24)}
- H01F 27/29: Terminals; Tapping arrangements {for signal inductances}
- H01F 27/327: {Encapsulating or impregnating (encapsulating coil and core H01F27/022)}
- H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES

## Abstract

The present disclosure relates to an inductor including a coil, an inner core disposed inside the coil, and an outer core formed in a rectangular ring shape to accommodate the coil and the inner core therein, wherein the inner core is manufactured separately from the outer core, and at least one end of both ends of the inner core in an axial direction is spaced apart from the outer core.

## Claims

### Claim 1

An inductor comprising:
a coil wound in a hollow form;
an inner core formed to have a cross-sectional shape corresponding to an inner surface of the coil and disposed inside the coil;
an outer core formed in a rectangular ring shape to accommodate the coil and the inner core therein; and
a support comprising the coil and the inner core therein through insert injection molding,
wherein the inner core is manufactured separately from the outer core, and at least one end of both ends of the inner core in an axial direction is spaced apart from the outer core, and
wherein the support further comprises:
a stopper protruding from one end of the support to limit the support to be inserted into the outer core by a predetermined length or more,
fixing slots concavely formed on both side surfaces of another end of the support, respectively, and
a fixing clip formed in a U shape and fitted into the fixing slots.

### Claim 2 (depends on 1)

The inductor according to claim 1, wherein
both ends of the inner core in the axial direction are spaced apart from an inner surface of the outer core.

### Claim 3 (depends on 1)

The inductor according to claim 1, wherein
a length of the inner core in the axial direction is shorter than a length of the coil in the axial direction.

### Claim 4 (depends on 1)

The inductor according to claim 1,
wherein the support is provided with openings on both surfaces thereof to allow both ends of the inner core to be exposed.

### Claim 5 (depends on 1)

The inductor according to claim 1, wherein
the support is formed in a rectangular parallelepiped shape and further comprises a plurality of pins connected to the coil.

### Claim 6 (depends on 1)

The inductor according to claim 1, wherein
the outer core comprises a pair of guide portions protruding from an inner surface thereof to correspond to both ends of the inner core in the axial direction.

### Claim 7 (depends on 6)

The inductor according to claim 6, wherein
the support comprises a pair of guide grooves concavely formed at positions corresponding to the pair of guide portions and extending long in a direction in which the support is inserted into the outer core.

### Claim 8 (depends on 1)

The inductor according to claim 1, further comprising
a bobbin in which the inner core is fixed and on which the coil is wound.