EP0689213B1 - Verfahren zur Herstellung einer Mikrospule - Google Patents
Verfahren zur Herstellung einer Mikrospule Download PDFInfo
- Publication number
- EP0689213B1 EP0689213B1 EP95107377A EP95107377A EP0689213B1 EP 0689213 B1 EP0689213 B1 EP 0689213B1 EP 95107377 A EP95107377 A EP 95107377A EP 95107377 A EP95107377 A EP 95107377A EP 0689213 B1 EP0689213 B1 EP 0689213B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wire
- insulating layer
- metal
- metal alloy
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
Definitions
- the invention has for its object a further manufacturing process to specify for a microcoil of this type. This manufacturing process is said to enable using coils to produce very fine windings that are not by winding are accessible.
- the inside diameter is the finished one Coil specified if no additional measures be provided.
- the invention is particularly advantageous Procedure when very thin wires, e.g. B. with a Diameters from 500 ⁇ m to less than 100 ⁇ m can be used because Micro coils of this size are difficult to wind by winding have it made. Wires with diameters are commercially available of 200 ⁇ m. 125 ⁇ m, 100 ⁇ m and 75 ⁇ m are offered, which are the Production of a micro coil are suitable.
- the wire together with the not removed parts of the insulating Layer is now placed in a galvanic bath and as Cathode switched.
- a voltage between the Cut the anode of the bath and the wire connected as the cathode on the parts freed from the insulating layer of the wire metal or a metal alloy By applying a voltage between the Cut the anode of the bath and the wire connected as the cathode on the parts freed from the insulating layer of the wire metal or a metal alloy.
- the metal or the metal alloy fills the turns of the helix first out until the distant areas of the insulating Layer are replaced by the metal or the metal alloy and the surface of both the remaining parts of the insulating Layer as well as the galvanic deposition Form a smooth surface.
- the galvanic deposition can be done in this stage will be terminated when the insulating layer has a thickness that is the desired thickness of the coil turns corresponds in the radial direction.
- the galvanic deposition of the metal or metal alloy takes place more evenly when the wire is in the galvanic bath during the metal deposition in rotation around its longitudinal axis is transferred.
- a tubular anode can be used that surrounds the wire.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Micromachines (AREA)
- Saccharide Compounds (AREA)
- Wire Processing (AREA)
- Coils Or Transformers For Communication (AREA)
Description
Claims (6)
- Verfahren zur Herstellung einer Mikrospule, bei dema) ein Draht aus einem elektrisch leitfähigen Material, der mit einer isolierenden Schicht überzogen ist, bereitgestellt wird,b) Teile der isolierenden Schicht in der Weise entfernt werden, daß der Draht aus dem elektrisch leitfähigen Material in einem zusammenhängenden Bereich, der die Form einer Schraubenlinie um den Draht aufweist, von der isolierenden Schicht befreit ist,c) der Draht mit der verbleibenden isolierenden Schicht in ein galvanisches Bad eingebracht und als Kathode geschaltet wird,d) auf den von der isolierenden Schicht befreiten Bereichen des Drahtes ein Metall oder eine Metallegierung in Form der Schraubenlinie abgeschieden wird,e) der Draht selektiv gegenüber dem Metall oder der Metallegierung entfernt wird.
- Verfahren nach Anspruch 1, bei dem die Teile der isolierenden Schicht mit Hilfe eines Schneidwerkzeugs entfernt werden, an dem der mit der isolierenden Schicht versehene Draht unter Rotation um die Längsachse und konstantem Vorschub vorbeigeführt wird.
- Verfahren nach Anspruch 1, bei dem der als Kathode geschaltete Draht im galvanischen Bad in Rotation um seine Längsachse versetzt wird.
- Verfahren nach Anspruch 1, bei dem der als Kathode geschaltete Draht im galvanischen Bad in eine rohrförmige Anode eingesetzt wird.
- Verfahren nach Anspruch 1, bei dem vor der selektiven Entfernung des Drahtes das galvanisch abgeschiedene Metall oder die galvanisch abgeschiedene Metallegierung und die verbleibende isolierende Schicht mit einem chemisch stabilen Kunststoff oder Lack überzogen werden.
- Verfahren nach Anspruch 1, bei dem nach der Entfernung der Teile der isolierenden Schicht der Draht in dem zusammenhängenden Bereich geätzt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4421494 | 1994-06-20 | ||
| DE4421494A DE4421494C1 (de) | 1994-06-20 | 1994-06-20 | Verfahren zur Herstellung einer Mikrospule unter Vermeidung der Wicklungstechnik |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0689213A1 EP0689213A1 (de) | 1995-12-27 |
| EP0689213B1 true EP0689213B1 (de) | 1998-05-20 |
Family
ID=6521012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95107377A Expired - Lifetime EP0689213B1 (de) | 1994-06-20 | 1995-05-16 | Verfahren zur Herstellung einer Mikrospule |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0689213B1 (de) |
| AT (1) | ATE166489T1 (de) |
| DE (2) | DE4421494C1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015223461A1 (de) | 2015-11-26 | 2017-06-01 | Robert Bosch Gmbh | Verfahren zum Herstellen eines induktiven Elements und induktives Bauelement |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3561111A (en) * | 1968-08-07 | 1971-02-09 | Trw Inc | Method for making precision, square-wire air core coils |
| JPS55130121A (en) * | 1979-03-30 | 1980-10-08 | Mitsubishi Electric Corp | Manufacturing method of coil |
| JPS60144922A (ja) * | 1984-01-07 | 1985-07-31 | Fuji Elelctrochem Co Ltd | 小形インダクタの製造方法 |
| JPS60167307A (ja) * | 1984-02-09 | 1985-08-30 | Matsushita Electric Ind Co Ltd | プリントコイルの製造方法 |
| DE3817057A1 (de) * | 1988-05-19 | 1989-05-24 | Bosch Gmbh Robert | Verfahren zur herstellung einer einlagigen sensorspule |
| DE9318386U1 (de) * | 1993-12-01 | 1994-03-17 | Forschungszentrum Karlsruhe GmbH, 76133 Karlsruhe | Mikrospule |
-
1994
- 1994-06-20 DE DE4421494A patent/DE4421494C1/de not_active Expired - Fee Related
-
1995
- 1995-05-16 EP EP95107377A patent/EP0689213B1/de not_active Expired - Lifetime
- 1995-05-16 DE DE59502222T patent/DE59502222D1/de not_active Expired - Fee Related
- 1995-05-16 AT AT95107377T patent/ATE166489T1/de not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| ATE166489T1 (de) | 1998-06-15 |
| EP0689213A1 (de) | 1995-12-27 |
| DE59502222D1 (de) | 1998-06-25 |
| DE4421494C1 (de) | 1995-06-14 |
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