EP0967831A2 - Ensemble bobine mobile et procédé pour sa mise en oeuvre - Google Patents

Ensemble bobine mobile et procédé pour sa mise en oeuvre Download PDF

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Publication number
EP0967831A2
EP0967831A2 EP99111830A EP99111830A EP0967831A2 EP 0967831 A2 EP0967831 A2 EP 0967831A2 EP 99111830 A EP99111830 A EP 99111830A EP 99111830 A EP99111830 A EP 99111830A EP 0967831 A2 EP0967831 A2 EP 0967831A2
Authority
EP
European Patent Office
Prior art keywords
voice coil
membrane
bobbin
coil bobbin
centering
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Withdrawn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
EP99111830A
Other languages
German (de)
English (en)
Other versions
EP0967831A3 (fr
Inventor
Johann Höcherl
Gerhard Dr. Krump
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.)
Harman Becker Automotive Systems GmbH
Original Assignee
Harman Becker Automotive Systems GmbH
Harman Audio Electronic Systems 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 Harman Becker Automotive Systems GmbH, Harman Audio Electronic Systems GmbH filed Critical Harman Becker Automotive Systems GmbH
Publication of EP0967831A2 publication Critical patent/EP0967831A2/fr
Publication of EP0967831A3 publication Critical patent/EP0967831A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/046—Construction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/006—Interconnection of transducer parts

Definitions

  • the invention is concerned with the training and manufacture of Voice coil arrangements, with a particular focus on the Weight reduction of such arrangements lies.
  • Voice coil arrangements in the sense of this application essentially comprise one Voice coil former with voice coil, a centering membrane and strands.
  • The is in As a rule, tubular voice coil carriers are connected to the voice coil.
  • the centering diaphragm is arranged at an axial distance from the voice coil and likewise connected to the voice coil former by means of an adhesive seam.
  • the centering membrane which extends radially to the longitudinal extent of the voice coil bobbin depends on Training either an accordion or wavy contour.
  • the two Voice coil wires of the voice coil are each connected to one of the solder points both strands conductively connected.
  • the voice coil is first placed on the carrier wrapped and baked and then the inside diameter of the neck of the Membrane connected to the outer diameter of the voice coil former. If the Voice coil wires before connecting the membrane to the voice coil former were not soldered to the strands, they are now soldered to the strands connected. Then a bead of adhesive is applied to the neck of the membrane the centering membrane was pushed over the voice coil and with the Glued outside diameter of the neck of the membrane. If the solder points are not already there sliding the centering membrane onto the underside, they are now glued to the underside of the membrane.
  • the voice coil with the Voice coil former and the voice coil wires over the soldering points with the strands connected the voice coil with the Voice coil former and the voice coil wires over the soldering points with the strands connected.
  • the solder points are glued to the voice coil former. Then will the centering membrane from the end of the voice coil bobbin, which is not with the Connected membrane, pushed onto the voice coil former and by means of a Adhesive seam, which is between the adhesive points for the soldering points and the voice coil is attached to the voice coil former.
  • this procedure has the disadvantage that relatively much adhesive for attaching the centering membrane to the voice coil former necessary is. This is due to the fact that the centering membrane in the second Procedure must have a relatively large inner diameter in order to Sliding the centering membrane over the voice coil will damage the Exclude voice coil. Another reason for the high use of adhesive is that with this procedure, the soldering points are already attached to the voice coil former and thus the adhesive nozzle - should guide it around the voice coil former without obstruction at least the vertical distance between the soldering point and the centering membrane must adhere to the centering membrane from above the soldering points or to ensure from above the strands bent to the side.
  • the second method also has the same as the first method Disadvantage that the additional fixation of the solder points on the voice coil former whose shock must be made completely adhesive-tight to prevent penetration of Adhesive, which is necessary for fixing the solder points, to the inside of the Exclude voice coil former. This additional seal works weight increasing.
  • the invention is the Task based on a weight-reduced voice coil arrangement and a automatable process for their manufacture.
  • the inner diameter of the neck of the membrane is substantially equal to the outer diameter of the voice coil former and the neck of the membrane dips at least partially in between the first area and the voice coil bobbin existing adhesive seam is a very compact voice coil arrangement with minimal Height created.
  • a particularly compact arrangement is given according to claim 5 when the adhesive seam between the first area of the centering membrane and the voice coil former and the Neck of the membrane have substantially the same axial distance from the voice coil.
  • the Flexibility of the sealing lip increasing measures cause damage to the Voice coil can be prevented when pushing on the centering membrane, although the Inner diameter of the centering membrane provided with the sealing lip essentially corresponds to the outer diameter of the voice coil former.
  • the flexible sealing lip prevents deformation and out-of-roundness of the centering membrane, if this is connected to the voice coil former. If you assume that the centering membrane itself has sufficient flexibility and therefore none There is a risk that the voice coil at the same diameter ratio Postponing the centering membrane would damage if the Centering membrane has reached its end position on the voice coil former, close to Fit voice coil former.
  • a complete automatability of a method for producing a voice coil arrangement according to one of claims 1-5 is given according to claim 7 if - afterwards the voice coil with the voice coil former and the voice coil wires
  • the centering membrane from the lower end is connected to the strands via the soldering points the voice coil former from the voice coil onto the voice coil former is pushed open, then the adhesive seam between the first area of the centering membrane and the voice coil former is formed and then the membrane with the Voice coil former is connected.
  • the slide open Centering membrane because of their realistically large thickness as a height stop for the centering membrane.
  • this procedure does not require a complex process Thread the voice coil wires or strands, as these are pushed on by the Fix the centering membrane from the lower end of the voice coil former.
  • the centering membrane has reached its end position on the voice coil former, lie the solder points between the first area of the respective contour of the centering membrane and the voice coil bobbin so that to make a permanent connection of Centering membrane, solder points and voice coil former only one adhesive seam in the Gap between the voice coil bobbin and the first area must be formed.
  • solder points in the space between the Voice coil carrier and the first region of the centering membrane can be arranged the adhesive seam between the centering membrane and the voice coil former also for fastening the solder points are used.
  • the voice coil wires and those connected to them Strands fixed according to claim 9 above the upper end of the voice coil former and / or be taut. Is the centering membrane with the voice coil former still not firmly connected, this causes a close concern. Likewise, with a Tightening connected slight sideways movement of the strands into the solder points Pull the adhesive seam, with which unavoidable tolerances in the distance from the solder points to Voice coil can be compensated and in any case it is ensured that the There are solder points in the adhesive seam.
  • a particularly advantageous procedure is given according to claim 10 if - Before the adhesive seam has hardened - the strands are essentially arched over the surface of the centering membrane facing away from the voice coil. This arcuate guiding of the strands causes the strands to relate to their later course after the adhesive seam has hardened in the area of the connection of the voice coil former, Solder points and centering membrane are given a preferred direction. In addition, the The fact that the first area of the centering membrane is towards the upper end of the Voice coil former opens, bringing about the preferred direction without sharp Transitions.
  • a centering membrane 10 is shown in a sectional view. It is clear this representation can be seen that the centering membrane 10 is an accordion-shaped Has contour and has an opening 11 centrally. The opening 11 immediately bordering area of the centering membrane 10 is the one in this application is designated as the first region 12. Since in the present case the contour of the centering membrane 10 is accordion-shaped, the first region 12 has with respect to the center line an oblique course.
  • a voice coil bobbin 13 is shown, which is tubular. This voice coil bobbin 13 is arranged on a working mandrel 14 which fills a space 15 encased by the voice coil bobbin 13 and exits the voice coil bobbin 13 at the upper end 16 thereof. Near the bottom 16 of the voice coil bobbin 13, the voice coil 18 is attached to the voice coil bobbin 13.
  • the two voice coil wires 19, which are connected to the voice coil 18, are on the outer jacket 20 of the voice coil bobbin 13 in the direction of the upper end 16 of the Voice coil former 13 is guided along and in each case by means of a soldering point 21 with the likewise on the outer jacket 20 of the voice coil bobbin 13 along strands 22 conductively connected.
  • the contact of the coil wires 19, the soldering points 21 and the strands 22 on the outer jacket 20 of the voice coil bobbin 13 was achieved in that the strands 22 in notches 23 arranged at the upper end of the working dome 14 and were pulled tight.
  • the notches 23 are only mentioned as examples. Rather, it can Tightening and fixing the strands 22 also in another familiar to the person skilled in the art Way. It is particularly advantageous if the stranded wire is on the voice coil former attached notches.
  • FIG. 2a For better representation, the voice coil bobbin 13 has been rotated by 90 ° in the clockwise direction compared to FIG. 1b in FIG. 2a. 2a that the inner edge 24 of the centering membrane 10 bears on the outer jacket 20 of the voice coil bobbin 13 up to a small distance A and that the first region 12 of the centering membrane 10 opens in the direction of the upper end 16 of the voice coil bobbin 13 .
  • This small distance from the edge 24 is necessary in order to avoid damage to the voice coil 18 when the centering membrane 10 is pushed onto the voice coil former 13 from the lower end 16 'thereof.
  • the centering membrane 10 can also be pushed onto the voice coil former 13 from the upper end 16 thereof, since the soldering points 21 are relatively relative to the distance relationships between the centering membrane 10 and the voice coil former 13 when pushed in this direction can be easily overcome. If the centering membrane 10 is to lie largely without distance on the voice coil support 13 to reduce the use of adhesive and nevertheless damage to the voice coil 18 or the soldering points 21 is to be excluded when the centering membrane 10 is pushed on, the centering membrane 10 is at its edge 24 as shown in FIG.
  • FIG. 2a shows the situation only schematically, in FIG. 2a the illustration of the tight fit of the coil wires 19 and strands 22 on the voice coil former 13 caused by the pulling of the strands 23 has been omitted in FIG. 2a.
  • the visible soldering point 21 lies between the first area 12 of the centering membrane 10 and the outer jacket 20 of the voice coil bobbin 13.
  • the gluing between the voice coil bobbin 13, the centering membrane 10 and the soldering point 21 was realized such that in the space 25 between the first area 12 and an adhesive seam 26 was formed on the outer jacket 20 of the voice coil bobbin 13.
  • the adhesive seam 26 at least partly in another - not shown - embodiment even before Sliding the centering membrane 10 onto the voice coil bobbin 13 or fixing and tightening the strands 22 on the voice coil bobbin 13 can be formed.
  • the centering membrane 10 is then pushed into the adhesive seam 26.
  • This previous application of the adhesive seam 26 has the advantage that complete gluing the soldering points 21 is ensured.
  • the centering membrane 10 has its end position shown in FIG. 2a on the voice coil former 13 taken and the adhesive seam 26 is formed, the strands 22 should Notches 23 taken or in another - not shown - embodiment the respective clamping and fixing arrangement in the direction of arrow P2 in an arc over the Top 27 of the centering membrane 10 are guided. Then the adhesive seam 26 hardens, the strands 22 already have a certain preferred direction with respect to their later ones Attachment points on the speaker basket (everything not shown in Fig. 2a).
  • FIG. 2b shows a membrane 28 which has a neck 29. Is the Inner diameter greater than / equal to the outer diameter of the voice coil former 13 and the membrane 28 is lowered onto the voice coil bobbin 13 in the direction of the arrow P3, conditions arise, which are shown schematically in FIG. 4.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP99111830A 1998-06-23 1999-06-19 Ensemble bobine mobile et procédé pour sa mise en oeuvre Withdrawn EP0967831A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998127793 DE19827793A1 (de) 1998-06-23 1998-06-23 Schwingspulenanordnung und Verfahren zu ihrer Herstellung
DE19827793 1998-06-23

Publications (2)

Publication Number Publication Date
EP0967831A2 true EP0967831A2 (fr) 1999-12-29
EP0967831A3 EP0967831A3 (fr) 2006-08-30

Family

ID=7871664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99111830A Withdrawn EP0967831A3 (fr) 1998-06-23 1999-06-19 Ensemble bobine mobile et procédé pour sa mise en oeuvre

Country Status (2)

Country Link
EP (1) EP0967831A3 (fr)
DE (1) DE19827793A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013012907B3 (de) * 2013-08-05 2014-05-22 Beyerdynamic Gmbh & Co. Kg Lautsprecher

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010013764B4 (de) * 2010-03-31 2012-08-16 Kuhnke Automotive Gmbh & Co. Kg Verfahren zum Herstellen einer Tauchspulenanordnung

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2007484A (en) * 1934-04-06 1935-07-09 Magnavox Co Sound reproducing apparatus
DE3640112C1 (en) * 1986-11-24 1988-03-17 Mannesmann Ag Method and device for producing electrodynamic ultrasonic transducer coils
JP2603834B2 (ja) * 1987-09-16 1997-04-23 フオスター電機株式会社 スピーカの製造方法
DE3808017A1 (de) * 1988-03-10 1989-09-21 Siemens Ag Piezokeramischer ultraschallwandler und verfahren zu seiner herstellung
US5014323A (en) * 1989-07-28 1991-05-07 Bose Corporation Voice coil lead dressing
US5641910A (en) * 1994-06-13 1997-06-24 Dynamic Instruments, Inc. Electrodynamic transducer shaker and method for its manufacture
DE4437476A1 (de) * 1994-10-20 1996-05-02 Nokia Deutschland Gmbh Verbindungsleitung
DE19711592A1 (de) * 1997-03-20 1998-09-24 Nokia Deutschland Gmbh Schwingspulenanordnung und Verfahren zu ihrer Herstellung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013012907B3 (de) * 2013-08-05 2014-05-22 Beyerdynamic Gmbh & Co. Kg Lautsprecher

Also Published As

Publication number Publication date
EP0967831A3 (fr) 2006-08-30
DE19827793A1 (de) 1999-12-30

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