Transformer and power supply device including the same

Patent metadata

Field	Value
Publication number	US-10658101-B2
Application number	US-201916390984-A
Country	US
Kind code	B2
Filing date	Apr 22, 2019
Priority date	Aug 29, 2013
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A transformer includes a magnetic core, a first coil unit and a second coil unit. The first coil unit is disposed within the magnetic core and includes a laminated board having layers laminated therein and conductive patterns. Respective ones of the conductive patterns are disposed on the laminated layers. The second coil unit includes a conductive wire spaced apart from the conductive patterns of the laminated board by an insulating distance. The conductive wire includes a triple-insulated wire surrounded by three sheets of insulating paper to maintain the insulating distance from the conductive patterns.

First claim

What is claimed is:

1. A transformer, comprising:
a magnetic core;
a first coil unit disposed in the magnetic core and including a laminated board having layers laminated therein and conductive patterns for forming a primary coil, the conductive patterns being disposed on the laminated layers;
a second coil unit including a conductive wire for forming a secondary coil spaced apart from the conductive patterns of the laminated board by an insulating distance; and
a based disposed on a main board,
wherein the base includes a plurality of terminal pins electrically connecting the laminated board and the main board
wherein the laminated board includes a first layer on which a conductive pattern is disposed, a second layer on which a shielding pattern is disposed, and a third layer on which a Vcc pattern for forming an induction current is disposed,
wherein the conductive pattern, the shielding pattern, and the Vcc pattern of the laminated board are disposed around a through hole allowing a middle leg of the magnetic core to be inserted thereinto,
wherein the conductive pattern be laminated to form an inductor pattern having a coil shape, and
wherein the base includes an accommodation portion comprising a seating part having the coil unit seated therein and a side wall protruding from the seating part, wherein the side wall of the accommodation portion has a coil outlet as a passage through which the second coil unit is led out to an external surface of the accommodation portion.

2. The transformer of claim 1 , wherein the first coil comprises a connector to electrically connect an external board and a stoppage protrusion,
wherein the stoppage protrusion is disposed between a side wall of the magnetic core and the connector disposed to correspond to the side wall of the magnetic core and prevents insertion of the connector in a direction of the middle leg.

3. The transformer of claim 1 , further comprising a spacer disposed between an inner surface of the magnetic core and the first coil unit, wherein the spacer includes a conductive material.

4. The transformer of claim 1 , wherein the transformer further comprises a first terminal portion and a second terminal portion, and the second terminal portion includes a terminal strip supporting the second coil unit led out from the accommodation portion and a fastening recess to which an end of the second coil unit is fastened.

5. The transformer of claim 1 , further comprising a spacer disposed between an inner surface of the magnetic core and the first coil unit, wherein the spacer includes a buffering material formed of rubber.

6. The transformer of claim 1 , wherein the second coil unit has a thickness less than that of the first coil unit.

Assignees

• Solum Co Ltd

Inventors

• Eom Jae Gen
• Noh Young Seung
• Choi Heung Gyoon
• Park Geun Young
• Han Sung Yun
• Jang Seh Hoon
• Jeong Nak Jun
• Lee Young Min
• Kim Jong Woo
• Heo Tae Won

Classifications

• H01F2027/065

  Mounting on printed circuit boards · CPC title

• H01F27/06

  Mounting, supporting or suspending transformers, reactors or choke coils {not being of the signal type} · CPC title

• H01F2027/2819

  Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit · CPC title

• H01F27/02

  Casings · CPC title

• H01F27/327

  Encapsulating or impregnating (encapsulating coil and core H01F27/022) · CPC title