Transformer and plate coil molded body

Patent metadata

Field	Value
Publication number	US-10388449-B2
Application number	US-201615168331-A
Country	US
Kind code	B2
Filing date	May 31, 2016
Priority date	Jul 31, 2015
Publication date	Aug 20, 2019
Grant date	Aug 20, 2019

Abstract

A transformer is provided, which includes a magnetic core, a primary coil module including a coil support arranged in the magnetic core and a primary coil formed on the coil support, an upper secondary coil module including an upper insulation molded body arranged on an upper portion of the primary coil module and an upper plate coil buried in the upper insulation molded body and arranged to face the primary coil, and a lower secondary coil module including a lower insulation molded body arranged on a lower portion of the primary coil module and a lower plate coil buried in the lower insulation molded body and arranged to face the primary coil.

First claim

What is claimed is:

1. A transformer comprising:
a magnetic core;
a primary coil module including a coil support arranged in the magnetic core and a primary coil formed on the coil support;
an upper secondary coil module including an upper insulation molded body arranged on an upper portion of the primary coil module and an upper plate coil buried in the upper insulation molded body such that only a terminal part of the upper plate coil is exposed, and arranged to face the primary coil; and
a lower secondary coil module including a lower insulation molded body arranged on a lower portion of the primary coil module and a lower plate coil buried in the lower insulation molded body such that only a terminal part of the lower plate coil is exposed, and arranged to face the primary coil,
wherein the upper insulation molded body includes an upper flange arranged on a front surface of the upper insulation molded body,
wherein the lower insulation molded body includes a lower flange arranged on a front surface of the lower insulation molded body,
wherein a lower surface of the upper flange and an upper surface of the lower flange mutually match each other,
wherein the upper plate coil includes:
a first upper plate coil member having both end portions drawn from the front surface of the upper insulation molded body and an intermediate region wound in a circumferential direction of the upper insulation molded body and buried in the upper insulation molded body; and
a second upper plate coil member having both end portions drawn from the front surface of the upper insulation molded body and disposed between the both end portions of the first upper plate coil member and an intermediate region wound to be spaced apart from an inside of the first upper plate coil member and buried in the upper insulation molded body, the intermediate region of the second upper plate coil member and the intermediate region of the first upper plate coil member being positioned on a same plane, and

wherein the lower plate coil includes:
a first lower plate coil member having both end portions drawn from the front surface of the lower insulation molded body and an intermediate region wound in a circumferential direction of the lower insulation molded body and buried in the lower insulation molded body; and
a second lower plate coil member having both end portions drawn from the front surface of the lower insulation molded body and disposed between the both end portions of the first lower plate coil member and an intermediate region wound to be spaced apart from an inside of the first lower plate coil member and buried in the lower insulation molded body, the intermediate region of the second lower plate coil member and the intermediate region of the first lower plate coil member being positioned on a same plane.

2. The transformer as claimed in claim 1 , wherein one end portion of the first upper plate coil member and one end portion of the second lower plate coil member are connected by wire,
one end portion of the first lower plate coil member and one end portion of the second upper plate coil member are connected by wire, and
the other end portion of the second upper plate coil member and the other end portion of the second lower plate coil member are connected by wire.

3. The transformer as claimed in claim 1 , wherein the upper plate coil includes one end portion drawn from a front surface of the upper insulation molded body, an intermediate region wound in a spiral shape and buried in the upper insulation molded body, and the other end portion bent in a lower direction and drawn to the upper insulation molded body, and
the lower plate coil includes one end portion drawn from a front surface of the lower insulation molded body, an intermediate region wound in a spiral shape and buried in the lower insulation molded body, and the other end portion bent in an upper direction and drawn from the lower insulation molded body.

4. The transformer as claimed in claim 3 , wherein a spiral direction of the upper plate coil is opposite to a spiral direction of the lower plate coil.

5. The transformer as claimed in claim 3 , wherein a spiral direction of the upper plate coil is the same as a spiral direction of the lower plate coil.

6. The transformer as claimed in claim 3 , wherein one end portion of the upper plate coil is bent to project from an outside of the upper insulation molded body to a lower side, and
one end portion of the lower plate coil is bent to project from an outside of the lower insulation molded body to a lower side.

7. The transformer as claimed in claim 6 , wherein the other end portion of the upper plate coil and the other end portion of the lower plate coil are respectively drawn from the upper insulation molded body and the lower insulation molded body and bent to face each other to be connected to each other by wire.

8. The transformer as claimed in claim 6 , wherein the other end portion of the upper plate coil and the other end portion of the lower plate coil have cut grooves formed thereon.

9. The transformer as claimed in claim 6 , wherein an end of the other end portion of the upper plate coil has at least one of a groove and a projection formed thereon, and
an end of the other end portion of the lower plate coil has at least one of a projection and a groove that can be coupled to the end of the other end portion of the upper plate coil.

10. The transformer as claimed in claim 7 , wherein the other end portion of the upper plate coil and the other end portion of the lower plate coil are connected by wire in a spiral of the upper plate coil and a spiral of the lower plate coil.

11. The transformer as claimed in claim 7 , wherein the other end portion of the upper plate coil and the other end portion of the lower plate coil are bent plural times, and are connected by wire on front surfaces of the upper insulation molded body and the lower insulation molded body.

12. The transformer as claimed claim 11 , wherein the other end portion of the upper plate coil and the other end portion of the lower plate coil are connected by wire through soldering.

13. The transformer as claimed in claim 1 , wherein the upper plate coil includes one end portion drawn from a front surface of the upper insulation molded body, an intermediate region wound in a spiral shape and buried in the upper insulation molded body, and the other end portion drawn to the upper insulation molded body through an upper side of the intermediate region, and
the lower plate coil includes one end portion drawn from a front surface of the lower insulation molded body, an intermediate region wound in a spiral shape and buried in the lower insulation molded body, and the other end portion drawn to the lower insulation molded body through a lower side of the intermediate region.

14. The transformer as claimed in claim 1 , wherein the lower insulation molded body further comprises at least one lower alignment rib projecting from the lower flange to a rear side in an upper direction to be spaced apart from the lower flange.

15. The transformer as claimed in claim 1 , wherein the upper insulation molded body further comprises at least one upper alignment rib projecting from the upper flange to a rear side to be spaced apart from the upper flange.

16. The transformer as claimed in claim 1 , wherein the lower insulation molded body includes a first lower rib projecting from left, right, and upper sides of a circumference of a front surface, a pair of second lower ribs projecting from a lower side of the circumference of the front surface to be

Assignees

• Solum Co Ltd

Inventors

• Park Geun-Young
• Jang Bong-Ho
• Eom Jae-Gen
• Noh Young-Seung
• Choi Heung-Gyoon
• Kim Heui-Wook

Classifications

• H01F27/2847

  Sheets; Strips (H01F27/2866 takes precedence) · CPC title

• H01F27/306

  Fastening or mounting coils or windings on core, casing or other support · CPC title

• H01F27/2823

  Wires (H01F27/2866 takes precedence) · CPC title

• H01F27/2866 Primary

  Combination of wires and sheets · CPC title

• H01F27/325

  Coil bobbins (formers for coils in general H01F5/02) · CPC title