Process for fixing a winding to an electronic circuit and a packaged electronic component produced therefrom

• US 5,790,387 A
• Filed: 11/05/1996
• Issued: 08/04/1998
• Est. Priority Date: 02/25/1991
• Status: Expired due to Term

• Current Assignee: Assa Abloy AB
• Original Assignee: Ake Gustafson
• Inventors: Gustafson, Ake
• Primary Examiner(s): Ledynh, Bot L.
• Application Number:
  US08/763,706
• Time in Patent Office: 637 Days
• Field of Search: 361/719-720, 361/728-730, 361/748, 361/807, 174/260-261, 174/259, 174/263, 174/52.1, 174/52.2, 336/90, 336/96, 257/779, 257/788, 257/784, 257/787, 29/605, 29/606, 29/618, 29/613, 29/748, 29/760, 242/439, 242/439.1, 242/439.2, 242/440, 242/440.1
• US Class Current: 361/807
• CPC Class Codes: H01F 2027/065 Mounting on printed circuit boards
• CPC Class Codes: H01F 27/06 Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
• CPC Class Codes: H01F 41/076 Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire
• CPC Class Codes: H01F 41/10 Connecting leads to windings making electric connections in general H01R43/00
• CPC Class Codes: H01F 41/127 Encapsulating or impregnating encapsulating coil and core H01F41/005
• CPC Class Codes: Y10T 29/49071 by winding or coiling
• CPC Class Codes: Y10T 29/49087 with envelope or housing
• CPC Class Codes: Y10T 29/49096 with winding
• CPC Class Codes: Y10T 29/49144 by metal fusion
• CPC Class Codes: Y10T 29/5187 Wire working

Abstract

The fixing process according to the invention of a winding to one or more electronic circuits permits elimination of an important manufacturing step of the processes according to the prior art, whether the positioning, then the gluing or the precise fixing of the winding or of the core to be wound on the electronic circuit or circuits. By a suitable arrangement of the electronic circuit or circuits and of the possible core, independently of one another, on a holding tool according to the invention, a semi-finished product is obtained, also according to the invention, made up of the circuit or circuits and the winding, the mechanical connection between them being ensured solely by the copper wires producing, moreover, the electrical connecting between the two elements. The finished component according to the invention will be obtained by disposing the preceding semi-finished product on a support ensuring a permanent mechanical connection between the two elements.

Claims

1. A component produced particularly in the course of a process for producing a packaged component, the process comprising:

placing at least one electronic circuit, comprising at least two accessible metal paths, on a holding tool;

directing a winding wire with guide means disposed on one face of said tool to a winding beginning position, the guide means positioning a first portion of the winding wire above a first metal path of the at least one electronic circuit when the winding wire is at the winding beginning position;

producing the winding with said winding wire;

directing the winding wire from a winding end position with said guide means, the guide means positioning a second portion of the winding wire above a second metal path of the at least one electronic circuit when the winding wire is brought from the winding end position;

directly electrically connecting the first and second portions of the winding wire situated above said first and second metal paths to the corresponding metal path;

opening the tool and withdrawing the component; and

packaging the component in a package structure, wherein only the first and second portions of the winding wire and the package structure provide support between the winding and the electronic circuit.

2. The component according to claim 1, wherein, in the packaging step, the component is covered at least partially by a coating forming the package structure.

3. The component according to claim 1, wherein, in the packaging step, the component is placed between two portions of at least one thin sheet of synthetic material, the synthetic material forming the package structure, the synthetic material forming an envelope, free edges of said portions of sheet subsequently being sealed together.

4. The component according to claim 1, wherein, in the packaging step, the component is intercalated between two sheets of synthetic material assembled together to form the packaging structure.

5. The component according to claim 1, wherein, in the packaging step, the at least one electronic circuit is positioned adjacent a flange of a winding core.

6. A component produced particularly in the course of a process for producing a packaged component, the process comprising:

placing at least one electronic circuit, comprising at least two accessible metal paths, on a holding tool;

directing a winding wire with guide means disposed on one face of said tool to a winding beginning position, the guide means positioning a first portion of the winding wire above a first metal path of the at least one electronic circuit when the winding wire is at the winding beginning position;

producing the winding with said winding wire;

directing the winding wire from a winding end position with said guide means the guide means positioning a second portion of the winding wire above a second metal path of the at least one electronic circuit when the winding wire is brought from the winding end position;

directly electrically connecting the first and second portions of the winding wire situated above said first and second metal paths to the corresponding metal path;

opening the tool and withdrawing the component; and

packaging the component such that a plurality of said components are disposed side by side, a free space provided between each adjacent pair of said components, the plurality of components placed between two parallel strips of a thin synthetic material, a sealing of the two strips being produced about each of said components to form an envelope.

7. The component according to claim 6, wherein, in the packaging step, each component is separated from other ones of the plurality of components by cutting said strips along a line situated between two consecutive sealings disposed in each free space.

8. The component according to claim 6, wherein the envelope surrounding the component comprises fixing means disposed outside of the sealed part of the envelope.

9. A packaged electronic component, comprising:

an electronic component comprising;

at least one electronic circuit, each at least one electronic circuit comprising;

a body having a surface, and

a plurality of leadless metal contact regions formed on or within the surface and contained entirely within lateral bounds of the body, and

a winding comprising a conductive wire, free ends of the winding wire directly electrically connected to the plurality of leadless metal contact regions of the at least one electronic circuit; and

a package structure, the electronic component placed into the package structure, wherein only the free ends of the winding wire and the package structure provides support between the winding and the electronic circuit.

10. The packaged electronic component according to claim 9, wherein the package structure comprises a coating which at least partially covers the electronic component.

11. The packaged electronic component according to claim 9, wherein the package structure comprises at least one thin sheet of synthetic material forming an envelope, the electronic component is subsequently placed between two portions of the at least one thin sheet, free edges of the portions of the at least one thin sheet subsequently sealed together.

12. The packaged electronic component according to claim 9, wherein the package structure comprises two sheets of synthetic material assembled together, the electronic component being intercalated between the two sheets.

13. The packaged electronic component according to claim 9, wherein the at least one electronic circuit of the electronic component is positioned adjacent a flange of a winding core.

14. A packaged electronic component comprising:

an electronic component comprising;

at least one electronic circuit, each at least one electronic circuit comprising;

a body having a surface, and

a plurality of leadless metal contact regions formed on or within the surface and contained entirely within lateral bounds of the body, and

a winding comprising a conductive wire, free ends of the winding wire directly electrically connected to the plurality of leadless metal contact regions of the at least one electronic circuit; and

a package structure, the electronic component placed into the package structure, wherein the package structure comprises two thin sheets of synthetic material, a plurality of the electronic components being disposed side by side along and between the two thin sheets and a free space provided between each adjacent pair of the electronic components, a sealing of the two thin sheets formed about each of the electronic components to form an envelope.

15. The packaged electronic component according to claim 14, wherein each electronic component is separated from other ones of the plurality of electronic components by cutting the two thin sheets along a line situated between two consecutive sealings disposed in each free space.

16. The packaged electronic component according to claim 15, wherein the envelope surrounding each electronic component comprises fixing means disposed outside of the sealed part of the envelope.

17. A process for producing a packaged component, the process comprising the steps of:

placing at least one electronic circuit, comprising at least two accessible metal paths, on a holding tool;

directing a winding wire with guide means disposed on one face of said tool to a winding beginning position, the guide means positioning a first portion of the winding wire above a first metal path of the at least one electronic circuit when the winding wire is at the winding beginning position,

producing the winding with said winding wire;

directing the winding wire from a winding end position with said guide means, the guide means positioning a second portion of the winding wire above a second metal path of the at least one electronic circuit when the winding wire is brought from the winding end position;

electrically connecting the first and second portions of the winding wire situated above said first and second metal paths to the corresponding metal path;

opening the tool and withdrawing the component; and

packaging the component.