Coil for electrical and electronic equipment as well as process for production thereof

• US 20030052767A1
• Filed: 04/26/2002
• Published: 03/20/2003
• Est. Priority Date: 09/18/2001
• Status: Abandoned Application

• Current Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Original Assignee: Hitachi Cable Limited (Proterial Ltd.)
• Inventors: Komatsu, Hiroaki, Yamanobe, Hiroshi, Komori, Tsutomu, Ichikawa, Takaaki
• Application Number:
  US10/132,714
• Publication Number:
  US 20030052767A1
• Time in Patent Office: Days
• US Class Current: 336/232
• CPC Class Codes: H01F 27/2847 Sheets; Strips H01F27/2866 takes precedence
• CPC Class Codes: H01F 27/323 Insulation between winding turns, between winding layers
• CPC Class Codes: H01F 41/04 for manufacturing coils coils for transformer or inductances H01F27/28

Abstract

A coil for electrical and electronic equipment comprises a spiral conductor coil 2 prepared by disposing coaxially a plurality of conductors 4a through 4d each having a flat circular arc-shaped configuration in multiple stages along a vertical direction, and linking sequentially ends of these conductors 4a through 4d to each other by means of linking members 5a through 5c in the vertical direction; and an insulating layer 3 covering the surface of the conductor coil 2, so that a relationship between a conductor width and a coil core diameter does not depend mutually, it becomes possible to increase and decrease optionally the conductor width and the coil core diameter, and as a result, a wider conductor width and a smaller coil core diameter in the conductor coil 2 than that of a conventional coil can be achieved.

Claims

1. A coil for electrical and electronic equipment, comprising:

a spiral conductor coil prepared by disposing coaxially a plurality of conductors each having a flat circular arc-shaped configuration in multiple stages along a vertical direction, and linking sequentially ends of said conductors to each other by means of linking members in the vertical direction; and

an insulating layer covering the surface of said conductor coil.

3. A coil for electrical and electronic equipment as claimed in claim 1, wherein:

said insulating layer is composed of a pair of plastic films with an adhesive positioned so as to sandwich said conductors in the vertical direction.

5. A coil for electrical and electronic equipment as claimed in claim 1, wherein:

said plastic films are prepared from a material selected from the group consisting of PBT (polyethylene terephthalate), PI (polyimide), PEN (polyethylene naphthalate), PPS (polyphenylene sulfide), and PEI (polyether imide).

2. A coil for electrical and electronic equipment, comprising:

a spiral conductor coil prepared by disposing coaxially a plurality of conductors each having a flat polygonal configuration in multiple stages along a vertical direction, and linking sequentially ends of said conductors to each other by means of linking members in the vertical direction; and

an insulating layer covering the surface of said conductor coil.

4. A coil for electrical and electronic equipment as claimed in claim 2, wherein:

said insulating layer is composed of a pair of plastic films with an adhesive positioned so as to sandwich said conductors in the vertical direction.

6. A coil for electrical and electronic equipment as claimed in claim 2, wherein:

said plastic films are prepared from a material selected from the group consisting of PBT (polyethylene terephthalate), PI (polyimide), PEN (polyethylene naphthalate), PPS (polyphenylene sulfide), and PEI (polyether imide).

7. A process for the production of a coil for electrical and electronic equipment, comprising the steps of:

forming a conductor plate prepared by linking sequentially ends of a plurality of conductors each having a flat circular arc-shaped or a polygonal configuration to each other;

said plurality of conductors being obtained by pressing or etching metallic plates;

covering the surf ace of said conductor plate with an insulating layer; and

then

folding alternately said respective conductors at each linked portion of said conductors in said conductor plate so as to overlap coaxially said conductors thereby forming a substantially spiral conductive coil.

8. A process for the production of a coil for electrical and electronic equipment, comprising the steps of;

forming a conductor plate prepared by linking sequentially ends of a plurality of conductors each having a flat circular arc-shaped or a polygonal configuration to each other;

said plurality of conductors being obtained by pressing or etching metallic plates;

folding alternately said respective conductors at each linked portion of said conductors in said conductor plate so as to overlap coaxially said conductors thereby forming a substantially spiral conductive coil; and

then

covering the surface of said conductor plate with an insulating layer.