EP0412296A1 - Procédé pour l'enroulement de bobines, en particulier pour capteurs de position - Google Patents

Procédé pour l'enroulement de bobines, en particulier pour capteurs de position Download PDF

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Publication number
EP0412296A1
EP0412296A1 EP19900112831 EP90112831A EP0412296A1 EP 0412296 A1 EP0412296 A1 EP 0412296A1 EP 19900112831 EP19900112831 EP 19900112831 EP 90112831 A EP90112831 A EP 90112831A EP 0412296 A1 EP0412296 A1 EP 0412296A1
Authority
EP
European Patent Office
Prior art keywords
coil
secondary coil
winding
wound
primary coil
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.)
Withdrawn
Application number
EP19900112831
Other languages
German (de)
English (en)
Inventor
Friedrich-Wilhelm Dipl.-Ing. Höfer (FH)
Werner Ing. Steprath (Grad.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0412296A1 publication Critical patent/EP0412296A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • 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
    • 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
    • H01F41/06—Coil winding
    • H01F41/098—Mandrels; Formers

Definitions

  • the invention is based on a method for winding coils, in particular displacement transducers according to the preamble of claim 1.
  • two secondary coils are wound in opposite directions on their own bobbin. In this case, a separate winding process is necessary for each winding direction, so that several interrupted steps in the manufacture are required.
  • two coils are to be wound up, each of which requires its own soldering points at the two winding ends.
  • the method according to the invention for winding coils of displacement sensors with the characterizing features of claim 1 has the advantage that a secondary coil consisting of two coil sections wound in opposite directions can be produced with the aid of modern winding machines. This means that only two soldering points are required. The manufacturing operations are reduced and simplified. The length of the encoder is shortened.
  • Figures 1 to 8 show the individual sub-steps of the method.
  • 10 denotes a hollow cylindrical bobbin of a displacement sensor 11 working according to the transformer principle.
  • the coil former 10 has flange-like boundaries 12, 13 at both ends, which delimit the winding areas for the secondary coil 14 and have a larger diameter than the winding areas 15, 16.
  • a deflection body 17 is attached, which can be designed as a web around the coil body 10 with an opening 18. But it can also be brought to the bobbin 10 several cams.
  • the wire of the secondary coil 14 is soldered to a boundary 13 of the coil body 10 and wound in one layer in the winding area 16 onto the coil body 10 up to the deflection body 17. If you want to reach a secondary coil 14 with several layers, wind back in the same winding direction to the limit 13 and then again to the deflection body 17. As a result, an odd number of layers is possible.
  • the wire of the secondary coil 14 is passed through its opening 18 and adjoining the body 17 in the second winding area 15 with the direction of rotation opposite to the winding area 16 continued.
  • the two sections of the secondary coil 14 thus have different directions of rotation.
  • the winding machine is moved further in the axial direction of the bobbin 10 by approximately the width of the deflection body 17 and then continues to wind in the opposite direction of rotation.
  • the ends of the web in the area of the opening 18 should not have any sharp edges and, as shown in the figures, should be curved, for example. This makes it possible for the wire of the secondary coil 14 to lie against the ends of the deflecting body 17 and thus a tight and tight coil winding is possible.
  • the wire is now wound onto the bobbin 10 up to the limit 12.
  • the winding process in winding area 15 must be repeated several times.
  • the windings or the number of layers of the secondary coil 14 should be the same in both winding areas 15, 16.
  • the wire is returned with a relatively large pitch angle through the opening 18 to the boundary 13 and soldered to it.
  • the coil 14 is additionally covered with a film 20.
  • the primary coil 21 is wound with the direction of rotation remaining the same over both winding areas 15, 16.
  • the wire of the primary coil 21 is again soldered to the boundary 13 next to the soldering points 22, 23 of the secondary coil 14. It is irrelevant whether the primary coil 21 is wound in the angular range 16 in the same direction or in the opposite direction to the secondary coil 14. Since the winding direction of the primary coil, as stated above, remains the same over the entire coil body 10, one of the two winding areas 15, 16 between the primary (21) and the secondary coil 14 has a different winding direction.
  • the wire of the primary coil 21 is passed through the opening 18 of the deflecting body 17 during the winding process and, as shown in FIG.
  • the primary coil 21 can be wound in multiple layers. It is possible to apply the layers of the primary coil 21 of the one winding area 15 and only then the layers of the other winding area 16, or the layers of the primary coil 21 can be applied over the entire length of the bobbin 10. In order to also have the soldering point 25 for the end of the wire next to the soldering point 24 on the boundary 13 for the primary coil 21, the wire of the primary coil 21 is returned to the boundary 13 with a large slope through the opening 18 of the deflecting body 17. This makes it possible to attach the start and end points of both the primary (21) and the secondary coil 14 on one side. The electrical connections of the primary (21) and the secondary coil 14 can thus be contacted in a particularly simple manner. As shown in FIG. 8, the displacement sensor 11 can be covered by a protective layer 27 which prevents mechanical damage to the coils.
  • a soft iron plunger is moved inside the bobbin 10.
  • the plunger can be connected to a machine part whose movement is to be determined, or the plunger can itself be part of the machine part.
  • the plunger anchor In the basic position, the plunger anchor is located in the region of the deflection body 17 and projects in each case by the same length into the two winding areas 15, 16 of the coil body 10. If the machine part is moved, the plunger anchor penetrates into one winding area by the same amount that it is moved out of the other winding area. Since the two winding areas 15, 16 of the secondary coil 14 are wound in opposite directions and electrically connected in series, the measurement errors occurring in the two winding areas 15, 16 are compensated for while the measurement signal is doubled. The so-called differential principle is applied.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Coil Winding Methods And Apparatuses (AREA)
EP19900112831 1989-08-05 1990-07-05 Procédé pour l'enroulement de bobines, en particulier pour capteurs de position Withdrawn EP0412296A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3925994 1989-08-05
DE3925994A DE3925994A1 (de) 1989-08-05 1989-08-05 Verfahren zur wicklung von spulen, insbesondere fuer weggeber

Publications (1)

Publication Number Publication Date
EP0412296A1 true EP0412296A1 (fr) 1991-02-13

Family

ID=6386613

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900112831 Withdrawn EP0412296A1 (fr) 1989-08-05 1990-07-05 Procédé pour l'enroulement de bobines, en particulier pour capteurs de position

Country Status (3)

Country Link
EP (1) EP0412296A1 (fr)
JP (1) JPH0371610A (fr)
DE (1) DE3925994A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2628169A4 (fr) * 2010-04-26 2017-12-13 Remy Technologies, LLC Solénoïde à saillie de moyeu de bobine pour changement de sens

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726256C1 (de) 1997-06-20 1998-08-27 Bso Steuerungstechnik Gmbh Wegaufnehmersystem für Schaltmagnete

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5552208A (en) * 1978-10-12 1980-04-16 Noble Sangyo Kk Differential transformer
US4473811A (en) * 1982-02-25 1984-09-25 General Instrument Corporation Single bobbin transformer having multiple delink windings and method of making same
JPS62211905A (ja) * 1986-03-12 1987-09-17 Matsushita Electric Works Ltd 電磁装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5552208A (en) * 1978-10-12 1980-04-16 Noble Sangyo Kk Differential transformer
US4473811A (en) * 1982-02-25 1984-09-25 General Instrument Corporation Single bobbin transformer having multiple delink windings and method of making same
JPS62211905A (ja) * 1986-03-12 1987-09-17 Matsushita Electric Works Ltd 電磁装置

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 69 (E-587)(2916) 03 März 1988, & JP-A-62 211905 (MATSUSHITA ELECTRIC WORKS LTD.) *
PATENT ABSTRACTS OF JAPAN vol. 4, no. 83 (E-15)(565) 14 Juni 1980, & JP-A-55 52208 (NOOBURU SANGYO K.K.) *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2628169A4 (fr) * 2010-04-26 2017-12-13 Remy Technologies, LLC Solénoïde à saillie de moyeu de bobine pour changement de sens

Also Published As

Publication number Publication date
DE3925994A1 (de) 1991-02-07
JPH0371610A (ja) 1991-03-27

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