EP0821540A2 - Assemblage de contacts pour bobine mobile - Google Patents

Assemblage de contacts pour bobine mobile Download PDF

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Publication number
EP0821540A2
EP0821540A2 EP19970111946 EP97111946A EP0821540A2 EP 0821540 A2 EP0821540 A2 EP 0821540A2 EP 19970111946 EP19970111946 EP 19970111946 EP 97111946 A EP97111946 A EP 97111946A EP 0821540 A2 EP0821540 A2 EP 0821540A2
Authority
EP
European Patent Office
Prior art keywords
voice coil
parts
permanent magnet
arrangement
contact
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Withdrawn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
EP19970111946
Other languages
German (de)
English (en)
Inventor
Gerhard 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.)
Nokia Technology GmbH
Original Assignee
Nokia Technology 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 Nokia Technology GmbH filed Critical Nokia Technology GmbH
Publication of EP0821540A2 publication Critical patent/EP0821540A2/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Withdrawn legal-status Critical Current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
    • H04R9/045—Mounting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads

Definitions

  • the invention is concerned with the contacting of voice coils, in particular with the simplification of the electrically conductive connections between Voice coil and connecting cables.
  • voice coils which are in Magnet systems are arranged by means of so-called strands with the To connect connecting lines in an electrically conductive manner. Because the voice coil carries out lifting movements in accordance with their intended purpose in the magnet system it is essential that the strands neither hinder the stroke of the voice coil, nor under operating conditions on vibrating parts of the system, such as the (Speaker) membrane, strike. These relationships are according to the state The technology ensures that those connected to the voice coil Leads from this arc-shaped to a fixedly arranged terminal block be performed and electrically connected there with the connecting lines are. If the voice coil is one in one Speakers are used, the terminal block is usually as a separate Component executed and connected to the speaker basket.
  • the electrical Contact between the strands and the terminal strips is designed so that the terminal strips are provided with electrically conductive contact pieces and - In the simplest case - each strand with a connecting line via a contact piece is conductively connected.
  • the terminal block can also be realized in that corresponding contact pieces in the speaker basket are pressed in.
  • the magnet system in which the voice coil is arranged is in the essentially formed by a permanent magnet and a yoke arrangement, which the magnetic lines of force emanating from the permanent magnet onto an im Magnetic system concentrated air gap.
  • the yoke arrangement mostly made of soft iron has two pole disks has, each with one of the two annular surfaces of the annular trained permanent magnets are connected.
  • the lower pole disc is with one so-called pole core connected, which in the assembled state of the Magnet system from the inner jacket of the permanent magnet with a radial distance is edged.
  • the air gap of the magnet system in which the voice coil immersed between the free end of the pole core and the upper pole disc formed which is also circular.
  • the electrically conductive connection between the strands and the Connection lines and the parts of each used as a contact piece Yoke arrangement can be designed as a solder connection.
  • the appropriate and parts of the yoke arrangement used as a contact piece for example Provide tabs
  • the respective conductive connection between the corresponding parts of the yoke arrangement and the connecting lines and / or the strands can also be designed as a plug connection.
  • a separate strain relief can be used be dispensed with if, according to claim 4, the respective connection cable between the part of the yoke arrangement serving as a contact piece and the permanent magnet while simultaneously establishing an electrically conductive connection is jammed. In this case it is possible to start the production of the Magnet system a permanent and tensile connection of the connecting cables easy to manufacture.
  • FIG. 1 shows a magnet system 10 in section AA according to FIG. 2.
  • This Magnet system 10 is composed of a permanent magnet 11 and a yoke arrangement 12 educated.
  • the permanent magnet 11 is annular and consists of Ferrite material.
  • the yoke arrangement 12 comprises an upper pole disk 12.1 and one lower pole disc 12.2.
  • the lower one Pole disk 12.2 integrally connected to a pole core 12.3.
  • the upper Pole disk 12.1, which is essentially annular, is - like Fig. 2 clearly shows - divided into two parts 13.1 and 13.2.
  • Each of the two Pole plates 12.1, 12.2 is with one of the annular surfaces of the permanent magnet 11 connected, the Polkem 12.3 from the inner surface of the permanent magnet 11 with radial distance is bordered.
  • the electrical contacting of the voice coil 17 is in the present Embodiment solved so that from the voice coil 17 two strands 18 to upper pole plate 12.1 are guided. Each of these two strands 18 is included one of the two parts 13.1, 13.2 of the upper pole plate 12.1 conductive by soldering connected.
  • the two connecting lines 19 are each one of the two Parts 13.1, 13.2 guided and connected. So that the contacting of the Connecting lines 19 with the two parts 13.1, 13.2 is simplified, are the both parts 13.1, 13.2 each provided with a tab 20 which over the Extend the outside diameter of the permanent magnet 11.
  • the connecting lines 19 are threaded and soldered into openings 21 of the tabs 20.
  • the electrical insulation of the ferrite material has the Advantage that despite the use of parts of the yoke assembly 12 as electrical Conductor no additional electrical and reducing the induction in the air gap 15 Isolation between the parts of the yoke arrangement carrying the signal voltage 12 and the permanent magnet 11 must be executed.
  • Fig. 1 and Fig. 2 can be clearly seen that according to the invention Contact between the voice coil 17 and the two parts 13.1, 13.2 in very simply symmetrical to the intersection of the center lines (Fig. 2) can be trained. With conventional magnet systems this is symmetrical arrangement of the respective connection contact likewise executable. In practice, however, a symmetrical connection is used with regard to the resulting work steps and components Realized very rarely due to cost reasons. Instead, the two strands 18 in direct spatial relationship away from the voice coil 17 and sometimes to avoid the resulting unbalance Balance weights, for example on the voice coil former 16 and / or the membrane (not shown in Fig. 1 and Fig. 2), which, however, the weight of the increase vibrating mass.
  • FIG. 3 shows an upper pole disk 12.1, which also consists of two parts 13.1, 13.2 is formed. These parts 13.1, 13.2 are also through a narrow gap 22 physically separated. In extension of the two facing surfaces of the A flap 20 is arranged on each of the two parts 13.1, 13.2 common plug 23 for electrical contacting of the two parts 13.1, 13.2 can be pushed on and locked with the connecting lines 19. Only the For completeness, it should be noted that in another - not illustrated - embodiment of each of the tabs 20 of one (standard) Plug can be contacted.
  • FIG. 4 differs from the arrangement according to FIG. 1 characterized in that in this embodiment, the upper pole plate 12.1 undivided is formed and for electrical contacting only one of the two Connection lines 19 is used.
  • the other connecting line 19 is connected to the lower one Pole disk 12.2 conductively connected.
  • the contacting of the voice coil 17 is like this solved, according to a strand 18 to conductive with the lower pole plate 12.2 Connected standing pole core 12.3 and is conductively connected to this, while the other strand 18 in conductive contact with the upper pole plate 12.1 stands.
  • FIG. 6 shows an embodiment in which the unit from the bottom Pole disk 12.2 and pole core 12.3 by dividing into two parts 13.1 ', and 13.2' is used to contact the voice coil 17.
  • they are two strands 18 each with the two parts 13.1 ', 13.2' at the free end 14 of the Polkerns 12.3 conductively connected.
  • This type of electrical contacting offers when, by using a prefabricated vibration unit, which in the present case a voice coil carrier 16 with a voice coil 17, a Centering membrane 25 and a membrane 26 includes the upper pole plate 12 not more is accessible from above the membrane 26.
  • the Opening 27 in the voice coil former 16 for contacting the strands 18 with the Polkern 12.3 can be used without any problems.
  • the gap 22 ' which is the two Parts 13.1 'and 13.2' physically separated from each other, also to accommodate one appropriately designed connector (not shown in Fig. 6) can be used.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP19970111946 1996-07-26 1997-07-14 Assemblage de contacts pour bobine mobile Withdrawn EP0821540A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19630169 1996-07-26
DE1996130169 DE19630169A1 (de) 1996-07-26 1996-07-26 Schwingspulenkontaktanordnung

Publications (1)

Publication Number Publication Date
EP0821540A2 true EP0821540A2 (fr) 1998-01-28

Family

ID=7800905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970111946 Withdrawn EP0821540A2 (fr) 1996-07-26 1997-07-14 Assemblage de contacts pour bobine mobile

Country Status (2)

Country Link
EP (1) EP0821540A2 (fr)
DE (1) DE19630169A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8180097B2 (en) 2008-05-23 2012-05-15 Sennheiser Electronic Gmbh & Co. Kg Dynamic electro-acoustic transducer and earphone
WO2013156672A1 (fr) 2012-04-18 2013-10-24 Nokia Corporation Appareil de génération de son
TWI477159B (zh) * 2014-05-27 2015-03-11 Cotron Corp 振動元件
US9628884B2 (en) * 2015-01-30 2017-04-18 Bose Corporation Routing conductors to electro-acoustic transducer voice coils

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19903823B4 (de) * 1999-02-02 2010-04-15 Harman Becker Automotive Systems Gmbh Lautsprecher mit lötfreiem Anschluss

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6028200B2 (ja) * 1979-12-31 1985-07-03 ソニー株式会社 電気音響変換器
DE8017419U1 (de) * 1980-06-28 1980-11-27 Peerless-Mb Gmbh, 6951 Obrigheim Spule fuer lautsprecher o.dgl.
JPS5853299A (ja) * 1981-09-25 1983-03-29 Seiko Instr & Electronics Ltd 動電形スピ−カ
DE4243308C2 (de) * 1992-12-21 1996-08-22 Sennheiser Electronic Dynamischer elektro-akustischer Wandler, insbesondere Kopfhörer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8180097B2 (en) 2008-05-23 2012-05-15 Sennheiser Electronic Gmbh & Co. Kg Dynamic electro-acoustic transducer and earphone
WO2013156672A1 (fr) 2012-04-18 2013-10-24 Nokia Corporation Appareil de génération de son
EP2847873A4 (fr) * 2012-04-18 2016-01-20 Nokia Technologies Oy Appareil de génération de son
TWI477159B (zh) * 2014-05-27 2015-03-11 Cotron Corp 振動元件
US9628884B2 (en) * 2015-01-30 2017-04-18 Bose Corporation Routing conductors to electro-acoustic transducer voice coils

Also Published As

Publication number Publication date
DE19630169A1 (de) 1998-01-29

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