EP0525400B1 - Membrane für Konuslautsprecher - Google Patents

Membrane für Konuslautsprecher Download PDF

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Publication number
EP0525400B1
EP0525400B1 EP92110869A EP92110869A EP0525400B1 EP 0525400 B1 EP0525400 B1 EP 0525400B1 EP 92110869 A EP92110869 A EP 92110869A EP 92110869 A EP92110869 A EP 92110869A EP 0525400 B1 EP0525400 B1 EP 0525400B1
Authority
EP
European Patent Office
Prior art keywords
cone
stabilizing element
diaphragm
voice coil
membrane
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
Application number
EP92110869A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0525400A2 (de
EP0525400A3 (enrdf_load_stackoverflow
Inventor
Leander Dipl.-Ing. Scholz
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 Deutschland GmbH
Original Assignee
Nokia Deutschland 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 Deutschland GmbH filed Critical Nokia Deutschland GmbH
Publication of EP0525400A2 publication Critical patent/EP0525400A2/de
Publication of EP0525400A3 publication Critical patent/EP0525400A3/xx
Application granted granted Critical
Publication of EP0525400B1 publication Critical patent/EP0525400B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone

Definitions

  • the invention is concerned with the improvement of cone speakers, in particular with the improvement of the membrane stability.
  • the cone loudspeaker specified in the preamble of claim 1 requires no explanation beyond the explanation given in the preamble because of its tens of thousands of times and the associated general awareness.
  • the membrane of such a cone loudspeaker must meet two important requirements: It must be light in order to be able to follow steep signal edges without delay, and it must have such rigidity so that it can follow the signal evenly over the entire surface. The last requirement cannot always be met, especially when it comes to loudspeakers with a large diaphragm diameter. With these speakers, the electrical signals are not uniform Lifting movement of the entire membrane surface implemented, but the membrane suffers deformation on its surface due to partial vibrations. These deformations lead to sound pressure waves that do not correspond to the driving electrical signal.
  • the input signal is falsified.
  • the disadvantage just discussed can be remedied by manufacturing the membrane from an extremely rigid material.
  • there are limits to this possibility of improving the rigidity of the membrane since above a certain rigidity materials and wall thicknesses are required which are no longer tolerable under the criterion of the lightness of the membrane.
  • the invention is therefore based on the object of creating a cone loudspeaker which is distinguished, on the one hand, by a light diaphragm construction and, on the other hand, has an extraordinarily high rigidity and freedom from partial vibrations of the diaphragm.
  • a conical stabilizing element is arranged between the underside of the membrane and the magnetic pot, the end of which is connected to the larger diameter of the underside of the membrane and the other end is connected to the outer surface of the voice coil bobbin.
  • Decoupling is understood to mean the occurrence of partial vibrations, which change frequency-dependent to phase oscillation and reduce the effective - rigid - radiation area of the loudspeaker. This reduction is counteracted by the arrangement of the stabilizing element which, together with part of the voice coil former and part of the membrane, forms a rigid triangular construction.
  • the stabilizing element and the centering membrane are glued in the same place on the voice coil former, a separate gluing of the stabilizing element to the voice coil former can even be omitted.
  • the cone loudspeaker shown in FIG. 1 is essentially formed by magnet system 10 and the associated cone-shaped loudspeaker basket 11.
  • the conical membrane 12 is also inserted in the loudspeaker basket 11.
  • the membrane 12 is connected to the upper edge of the speaker basket 11 by means of a circumferential bead 13.
  • the other end of the membrane 12 is connected to the tubular voice coil former 14 with the adhesive seam K1.
  • the voice coil support 14 is connected with its outer surface 17 via an accordion-shaped centering membrane 18 to the loudspeaker basket 11.
  • the connection between the voice coil former 14 and the centering membrane 18 is realized by the adhesive seam K2.
  • one end of the stabilizing element 19 is also connected to the voice coil former 14.
  • the other end of the stabilizing element 19 is glued to the underside 20 of the membrane 12 by means of the further adhesive seam K3.
  • the geometry of the stabilizing element 19 is dimensioned such that the end which is connected to the membrane 12 has a diameter such that this end supports the membrane at a location where the first radial vibration mode occurs. Compliance with the upper diameter of the stabilizing element 19 just discussed has the effect that the area of the radiation area of the membrane 12 is enlarged, since the support of the membrane 12 at this location greatly reduces partial vibrations.
  • the loudspeaker shown in FIG. 2 differs from that shown in FIG. 1 only in that the stabilizing element 19 in FIG. 2 has a different shape.
  • This changed shape consists in that the membrane 12 is connected on its underside 20 in the area between the adhesive seams K1 and K3 by the reinforcing element 21 to the stabilizing element 19 via the adhesive seams K4 and K5.
  • the stabilizing element 19 and the reinforcing element 21 can also be formed in one piece, for example as a film pulling part. In this case, only one adhesive seam is required, which connects the reinforcing element 21 to the underside 20 of the membrane 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP92110869A 1991-07-31 1992-06-26 Membrane für Konuslautsprecher Expired - Lifetime EP0525400B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9109452U DE9109452U1 (de) 1991-07-31 1991-07-31 Konuslautsprecher
DE9109452U 1991-07-31

Publications (3)

Publication Number Publication Date
EP0525400A2 EP0525400A2 (de) 1993-02-03
EP0525400A3 EP0525400A3 (enrdf_load_stackoverflow) 1994-01-05
EP0525400B1 true EP0525400B1 (de) 1995-01-11

Family

ID=6869826

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92110869A Expired - Lifetime EP0525400B1 (de) 1991-07-31 1992-06-26 Membrane für Konuslautsprecher

Country Status (7)

Country Link
US (1) US5323469A (enrdf_load_stackoverflow)
EP (1) EP0525400B1 (enrdf_load_stackoverflow)
JP (1) JPH05268694A (enrdf_load_stackoverflow)
CZ (1) CZ281054B6 (enrdf_load_stackoverflow)
DE (2) DE9109452U1 (enrdf_load_stackoverflow)
DK (1) DK0525400T3 (enrdf_load_stackoverflow)
PL (1) PL54120Y1 (enrdf_load_stackoverflow)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9109452U1 (de) * 1991-07-31 1991-10-17 Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim Konuslautsprecher
EP0685979A3 (de) * 1994-06-01 1997-04-23 Nokia Technology Gmbh Zentriermembran.
DE4419312A1 (de) * 1994-06-01 1995-12-07 Nokia Deutschland Gmbh Lautsprecher
US5734734A (en) * 1995-12-29 1998-03-31 Proni; Lucio Audio voice coil adaptor ring
US5734132A (en) * 1996-07-19 1998-03-31 Proni; Lucio Concentric tube suspension system for loudspeakers
JP3599954B2 (ja) * 1996-12-11 2004-12-08 有限会社ベルテック スピ−カ
US6031925A (en) * 1998-06-25 2000-02-29 U.S. Philips Corporation Telescoping loudspeaker has multiple voice coils
US6351544B1 (en) 1999-12-10 2002-02-26 Harman International Industries Incorporated Regressively hinged spider
US6700987B2 (en) * 2000-08-25 2004-03-02 Matsushita Electric Industrial Co., Ltd. Loudspeaker
US7209570B2 (en) * 2001-06-11 2007-04-24 Matsushita Electric Industrial Co., Ltd. Speaker
USD472891S1 (en) 2001-09-13 2003-04-08 Jl Audio, Inc. Loudspeaker frame
USD480709S1 (en) 2002-06-03 2003-10-14 Jl Audio, Inc. Loudspeaker
JP4243499B2 (ja) * 2002-06-11 2009-03-25 富士通株式会社 貼合せ基板製造装置及び貼合せ基板製造方法
US7197154B2 (en) * 2002-08-21 2007-03-27 Sahyoun Joseph Y Method and audio speaker with minimization of wobble of the voice coil
JP3651470B2 (ja) * 2003-03-31 2005-05-25 松下電器産業株式会社 スピーカ
CN101138271A (zh) * 2005-01-06 2008-03-05 Pss比利时股份有限公司 具有可移动的锥形主体的扬声器
USD570336S1 (en) * 2006-03-28 2008-06-03 Matsushita Electric Industrial Co., Ltd. Frame for loudspeaker
USD544857S1 (en) * 2006-05-31 2007-06-19 Elemental Designs Ben Milne Speaker basket
JP4726090B2 (ja) * 2006-08-24 2011-07-20 パイオニア株式会社 スピーカ装置
USD582399S1 (en) * 2007-10-26 2008-12-09 Magna Aftermarket Inc. Exciter bracket for audio speakers
US8204269B2 (en) * 2008-08-08 2012-06-19 Sahyoun Joseph Y Low profile audio speaker with minimization of voice coil wobble, protection and cooling
JP5372012B2 (ja) * 2008-11-19 2013-12-18 パナソニック株式会社 スピーカと、スピーカを備えた電子機器
GB2470362B (en) * 2009-05-19 2013-03-20 Gp Acoustics Uk Ltd Cone loudspeaker
GB2480457B (en) * 2010-05-19 2014-01-08 Gp Acoustics Uk Ltd Loudspeaker
USD783577S1 (en) * 2015-09-16 2017-04-11 Stillwater Designs And Audio, Inc. Subwoofer
JP1602158S (enrdf_load_stackoverflow) * 2017-09-05 2018-04-16
JP1602162S (enrdf_load_stackoverflow) * 2017-09-12 2018-04-16
JP2023019839A (ja) * 2021-07-30 2023-02-09 パナソニックＩｐマネジメント株式会社 電気音響変換器

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB253687A (en) * 1925-05-14 1926-06-24 Patrick Joseph Mullaly Improvements in telephone receivers, sound reproducers and like instruments
FR687655A (fr) * 1929-12-24 1930-08-12 Lissen Ltd Perfectionnements aux hauts-parleurs téléphoniques
US1897294A (en) * 1930-08-14 1933-02-14 Radio Electr Soc Fr Loud speaker and like apparatus
GB378986A (en) * 1931-05-27 1932-08-25 Fred Umpleby Improvements in and relating to sound reproducing instruments
GB440041A (en) * 1934-06-19 1935-12-19 Robert Rodger Glen Improvements in or relating to loud-speakers and the like
US2641329A (en) * 1950-05-29 1953-06-09 Univ Loudspeakers Inc Loud-speaker diaphragm with transversely arched stiffener means
FR1079073A (fr) * 1953-02-26 1954-11-25 Bouyer Paul & Cie Haut-parleur
DE3929266C1 (enrdf_load_stackoverflow) * 1989-09-02 1991-01-03 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE9109452U1 (de) * 1991-07-31 1991-10-17 Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim Konuslautsprecher

Also Published As

Publication number Publication date
JPH05268694A (ja) 1993-10-15
EP0525400A2 (de) 1993-02-03
DE59201179D1 (de) 1995-02-23
DE9109452U1 (de) 1991-10-17
PL54120Y1 (en) 1996-05-31
US5323469A (en) 1994-06-21
DK0525400T3 (da) 1995-04-24
CZ281054B6 (cs) 1996-06-12
EP0525400A3 (enrdf_load_stackoverflow) 1994-01-05
CZ236592A3 (en) 1993-02-17

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