EP0924960A2 - Suspension pour des arrangements de reproduction sonore selon le principe des ondes de flexion - Google Patents

Suspension pour des arrangements de reproduction sonore selon le principe des ondes de flexion Download PDF

Info

Publication number
EP0924960A2
EP0924960A2 EP98123818A EP98123818A EP0924960A2 EP 0924960 A2 EP0924960 A2 EP 0924960A2 EP 98123818 A EP98123818 A EP 98123818A EP 98123818 A EP98123818 A EP 98123818A EP 0924960 A2 EP0924960 A2 EP 0924960A2
Authority
EP
European Patent Office
Prior art keywords
panel
openings
core layer
cover layers
suspension
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.)
Granted
Application number
EP98123818A
Other languages
German (de)
English (en)
Other versions
EP0924960A3 (fr
EP0924960B1 (fr
Inventor
Wolfgang Bachmann
Gerhard Krump
Hans-Jürgen Regl
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
Nokia Technology GmbH
Harman Becker Automotive 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 Nokia Technology GmbH, Harman Becker Automotive Systems GmbH filed Critical Nokia Technology GmbH
Publication of EP0924960A2 publication Critical patent/EP0924960A2/fr
Publication of EP0924960A3 publication Critical patent/EP0924960A3/fr
Application granted granted Critical
Publication of EP0924960B1 publication Critical patent/EP0924960B1/fr
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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/16—Mounting or tensioning of diaphragms or cones
    • H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
    • H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2307/00—Details of diaphragms or cones for electromechanical transducers, their suspension or their manufacture covered by H04R7/00 or H04R31/003, not provided for in any of its subgroups
    • H04R2307/207—Shape aspects of the outer suspension of loudspeaker diaphragms

Definitions

  • the invention is concerned with mountings for sound reproduction devices according to the principle of flexible shafts, especially those suspensions which allow any integration of such arrangements in installation openings without the To prevent bending wave propagation.
  • the panel is built on the sandwich principle, by two each other opposite surfaces of a very light core layer each with a thin cover layer are connected for example by gluing. So that Panel has good sound reproduction properties, the material for the Top layer have a particularly high expansion shaft speed.
  • Suitable Cover layer materials are, for example, thin metal foils or fiber-reinforced plastic films.
  • the core layer There are also special requirements for the core layer. That's the way it is necessary that the materials that can be used initially have a low mass density and have low damping.
  • the materials for the Core layer as high a shear modulus perpendicular to the surfaces have, which are provided with the cover layers. After all, it is in the sense A main requirement is that the core layers can be used Materials in the direction in which they are later made from this material formed core layer has its greatest extent, a very small Possess modulus of elasticity. This in relation to the last two requirements At first glance, contradictory prerequisites are most likely to be caused by a core layer that has a hole structure with between the two for the Coating with the surfaces provided for the top layers Breakthroughs with preferably a small cross section.
  • Core layer materials can be used because they are isotropic Material properties still suitable shear and elasticity modules exhibit. It should not go unmentioned in this context that the Use of rigid foams as the material for the core layer Cover layers have the task of the required anisotropic behavior of the To manufacture panels.
  • the invention has for its object a suspension for Sound reproduction arrangements according to the bending wave principle indicate which avoids the disadvantages existing in the prior art.
  • the inventive step of the present application is to be recognized have that the components used to manufacture the panel for Making an elastic connection with a bracket are suitable.
  • the core layer has a hole structure, each Breakthrough of this perforated structure runs perpendicular to the two cover layers, and is to realize a fastening of the panel with the bracket at least one of the openings inserted a fastener, the anyway elastic hole structure of the core material for elastic attachment be used if at least one of the two cover layers to the or with the fastening part provided breakthrough or breakthroughs maintains lateral distance A1 by a plurality of the to or with the Fastening part provided openings immediately adjacent to the side Breakthroughs are not covered by the cover layer or layers. Whether that respective fastening part parallel or transverse to the direction of the Breakthroughs is irrelevant.
  • the breakthrough or breakthroughs which are provided with the fastening part, and / or the openings which lateral to the or the openings provided with the fastening part adjacent be foamed with a plastic material.
  • At least one of the two cover layers should also be added to the openings foamed with plastic material a distance A2 adhere.
  • a further improved spring action is achieved if - as in claim 5 specified - the or the openings which receive a fastening part, and / or breakthroughs that are not or only with one of the two Cover layers are covered, opposite the breakthroughs in the rest Core layer have a reduced length.
  • the sound reproduction arrangement is particularly space-saving when the Electronic components for driving the panel at a distance A between Bracket and panel are arranged. Are the electronic components with the Bracket connected, they do not increase the vibrating mass. Besides, will by attaching the electronic components to the bracket for one improved heat dissipation from the electronic components
  • the respective panel also by means of a combination of core layer and top layer suspension can be attached, for example, by one of the cover layers for mounting is guided and the panel removed from the edge area with the participation of Core layer is supported.
  • the panel 10 shown in top view in FIG. 1 is made up of a core layer 11, an upper cover layer 12.1 and a lower cover layer not visible in FIG. 1 Cover layer 12.2 is formed, the two cover layers 12 each mutually opposite surfaces of the core layer 11 with this are connected.
  • the core layer 11 has a hole structure, which in the present case a plurality of openings 20 with a honeycomb shape Cross section is formed.
  • the honeycomb openings 20 run vertically to the planes of the two cover layers 12 which have their greatest extent.
  • openings 20 shown in the exemplary embodiments are all have a honeycomb-shaped cross section is not limited to this Cross-sectional shape connected. This means that in other embodiments the openings 20 can also have round or angular cross sections.
  • the core layer 11 is not complete covered with the two deck views 12. Rather, in the two Cover layers 12 left an area 13 uncovered, through which the Core layer 11 is visible. In the middle (the one visible in Figure 1) Openings 20 is a fastening part in the form of a screw 14 plugged in.
  • the head 15 of the screw 14 lies on the core layer 11 If necessary, between the core layer 11 and the head 15 Screw 14 also a washer - for example made of foam (not shown).
  • Figure 2 can also be seen that the on the with the shaft 16 of the screw 14 provided opening 20 and the side opposite breakthroughs 20 directly adjacent to this opening 20 the remaining openings 20 of the core layer which have a length of L1 11 have a reduced length L2. This reduced length L2 of the Breakthroughs 20 cause them to be opposite the openings 20 a length L1 more easily transverse to the direction of the shaft 16 of the screw 14 deformed.
  • FIGS. 3a-c show one of the suspensions according to FIGS. 1 and 2 shown completely different suspension, although both types of suspension a panel 10 can also be used in combination for suspension.
  • the panel 10 is with side Distance A surrounded by a bracket 17.
  • This bracket 17 is present formed as a U-profile, the free legs 18 of this profile in the direction of the panel 10 show.
  • the legs 18 can also have a toothed contour (not shown).
  • the corresponding cover layer 12 is formed on a toothed Leg 18 of the circumferential bracket 17 placed and by means of a complementary toothed tool pressed on the leg 18, a Stress built up in the cover layer 12, which, for example, after Obtain setting of the adhesive between leg 18 and cover layer 12 remains.
  • other methods known to the person skilled in the art for Build-up of tension in the cover layer 12 connected to the holder 17 be used.
  • reference numeral 19 is one Electronics is designated, which with or the drive systems (not for the panel 10 cooperates. This electronics 19 is with the Bracket 17 connected, whereby good heat dissipation from the panel 10 is achieved becomes.
  • the embodiment according to FIG. 4 is linked to the embodiment according to Figures 1 and 2.
  • the fastening part in the form of a tab 14 'transverse to Direction of extension of the openings 20 connected to the panel 10.
  • the openings 20 'to 20 "' are neither with one upper still with a lower cover layer 12.1, 12.2. to the Mobility of the through holes 20 "and 20" '' transversely to their direction of extension to improve. Addition remains in connection with the embodiment according to FIG. 4, only that the distances A1 and A2 shown are not only transverse apply to the direction of view of this figure but perpendicular to it.
  • the tab 14 'at a distance A' between the panel and the Bracket 17 can be made elastic.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Building Environments (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Body Structure For Vehicles (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Laminated Bodies (AREA)
EP98123818A 1997-12-20 1998-12-15 Suspension pour des arrangements de reproduction sonore selon le principe des ondes de flexion Expired - Lifetime EP0924960B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19757098 1997-12-20
DE19757098A DE19757098C2 (de) 1997-12-20 1997-12-20 Aufhängung für Schallwiedergabeanordnungen nach dem Biegewellenprinzip

Publications (3)

Publication Number Publication Date
EP0924960A2 true EP0924960A2 (fr) 1999-06-23
EP0924960A3 EP0924960A3 (fr) 2005-04-13
EP0924960B1 EP0924960B1 (fr) 2009-11-25

Family

ID=7852892

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98123818A Expired - Lifetime EP0924960B1 (fr) 1997-12-20 1998-12-15 Suspension pour des arrangements de reproduction sonore selon le principe des ondes de flexion

Country Status (4)

Country Link
US (1) US6160898A (fr)
EP (1) EP0924960B1 (fr)
JP (1) JPH11252684A (fr)
DE (2) DE19757098C2 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999052324A1 (fr) * 1998-04-02 1999-10-14 New Transducers Limited Dispositif acoustique ayant recours a l'action d'une onde de flexion
WO1999060818A1 (fr) * 1998-05-15 1999-11-25 Harman Audio Electronic Systems Gmbh Haut-parleur a panneaux
EP1100287A1 (fr) * 1999-11-10 2001-05-16 M- Tech(HK) Co. Ltd Haut-parleur
WO2001047320A1 (fr) * 1999-12-21 2001-06-28 New Transducers Limited Haut-parleurs
WO2002013575A1 (fr) * 2000-08-03 2002-02-14 New Transducers Limited Haut-parleur a ondes de flexion
US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
US6826285B2 (en) 2000-08-03 2004-11-30 New Transducers Limited Bending wave loudspeaker
US6836552B1 (en) 1998-06-10 2004-12-28 Harman Audio Electronic Systems Gmbh Panel loudspeakers
EP1604750A1 (fr) * 2004-06-08 2005-12-14 ACHENBACH BUSCHHÜTTEN GmbH Dispositif pour mesurer la distribution de la tension dans une bande métallique

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19757099A1 (de) * 1997-12-20 1999-06-24 Nokia Deutschland Gmbh Kontaktierung für eine Schallwiedergabeanordnung nach dem Biegewellenprinzip
DE19821862A1 (de) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Schallwiedergabeanordnung
DE19821860A1 (de) 1998-05-15 1999-11-18 Nokia Deutschland Gmbh Treiber für flaches Klangpaneel
DE19843079A1 (de) * 1998-09-19 2000-03-23 Nokia Deutschland Gmbh Multiresonanzplatte
US7225895B2 (en) * 1998-11-30 2007-06-05 Joseph Yaacoub Sahyoun Audio speaker with wobble free voice coil movement
US6044925A (en) * 1998-11-30 2000-04-04 Sahyoun; Joseph Yaacoub Passive speaker
US6675931B2 (en) 1998-11-30 2004-01-13 Joseph Yaacoub Sahyoun Low profile audio speaker
US7185735B2 (en) * 1998-11-30 2007-03-06 Joseph Yaacoub Sahyoun Audio speaker with wobble free voice coil movement
US20040188175A1 (en) * 1998-11-30 2004-09-30 Sahyoun Joseph Yaacoub Audio speaker with wobble free voice coil movement
DE19943084A1 (de) * 1999-09-09 2001-04-05 Harman Audio Electronic Sys Schallwandler
DE10001410C2 (de) * 2000-01-14 2001-12-06 Harman Audio Electronic Sys Flachlautsprecheranordnung
US6751329B2 (en) * 2000-09-21 2004-06-15 New Transducers Limited Loudspeaker driver
US7109959B2 (en) 2002-02-06 2006-09-19 Andersen Corporation Multi-task window
US7180489B2 (en) * 2002-02-06 2007-02-20 Andersen Corporation Automated multi-task window assembly
RU2290771C2 (ru) * 2002-10-25 2006-12-27 Мацусита Электрик Индастриал Ко., Лтд. Подвес
JP4031977B2 (ja) * 2002-11-26 2008-01-09 有限会社ファル 平面型スピーカー及びそれを用いたスピーカーシステム
US8116512B2 (en) * 2006-09-14 2012-02-14 Bohlender Graebener Corporation Planar speaker driver
US8204269B2 (en) * 2008-08-08 2012-06-19 Sahyoun Joseph Y Low profile audio speaker with minimization of voice coil wobble, protection and cooling
US8540049B2 (en) 2010-12-23 2013-09-24 Bose Corporation Acoustic diaphragm suspending
EP2624595A4 (fr) * 2011-05-19 2015-07-01 Tang Band Ind Co Ltd Dispositif à plaque vibrante d'un vibreur électromagnétique et son procédé de fabrication
CN202949560U (zh) * 2012-11-16 2013-05-22 瑞声声学科技(常州)有限公司 发声器
US9788122B2 (en) * 2012-12-26 2017-10-10 Xin Min HUANG Vibrating panel device for electromagnetic vibrator and manufacture method thereof
DE102014012327B3 (de) * 2014-08-20 2015-12-03 Helge Bots Resonanzplatte zur Verbesserung der Klangcharakteristik herkömmlicher Lautsprecherboxen
US9654879B2 (en) 2014-10-24 2017-05-16 Bose Corporation Suspension for acoustic device
US9466280B2 (en) 2014-10-24 2016-10-11 Bose Corporation Acoustic device suspension
MY201278A (en) 2015-09-14 2024-02-14 Wing Acoustics Ltd Improvements in or relating to audio transducers
US9924273B2 (en) 2016-03-31 2018-03-20 Bose Corporation Acoustic device configuration and method
US11166100B2 (en) 2017-03-15 2021-11-02 Wing Acoustics Limited Bass optimization for audio systems and devices
WO2018172944A1 (fr) 2017-03-22 2018-09-27 Wing Acoustics Limited Systèmes, procédés et dispositifs se rapportant à des charnières et à des transducteurs audio
CN111818427A (zh) * 2019-04-10 2020-10-23 鸿富锦精密工业（深圳）有限公司 振动系统、扬声器及振动系统的制作方法

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US2063945A (en) * 1933-08-02 1936-12-15 Pierce George Washington Diaphragm and method
US2744042A (en) * 1951-06-21 1956-05-01 Goodyear Tire & Rubber Laminated panels
NL287574A (fr) * 1962-01-15
DE1132593B (de) * 1965-04-05 1962-07-05 Bolt Beranek & Newman Akustisch wirksame Platte, insbesondere zur Ankopplung an einen elektroakustischen Wandler
DE2112516B1 (de) * 1971-03-16 1972-10-19 Kurtze Guenther Dipl Phys Prof Richtlautsprecher
JPS5379525A (en) * 1976-12-23 1978-07-14 Sony Corp Compound diaphtagm for speakers
JPS5748153Y2 (fr) * 1977-11-26 1982-10-22
JPS603277B2 (ja) * 1978-06-15 1985-01-26 ソニー株式会社 スピーカ装置
JPS5568795A (en) * 1978-11-20 1980-05-23 Sony Corp Speaker
GB2055015B (en) * 1979-06-30 1984-01-04 Pioneer Electronic Corp Voice coil bobbin for a planar diaphragm
JPS5925557B2 (ja) * 1980-02-12 1984-06-19 パイオニア株式会社 スピ−カの平面振動板
US4410768A (en) * 1980-07-23 1983-10-18 Nippon Gakki Seizo Kabushiki Kaisha Electro-acoustic transducer
JPS5767398A (en) * 1980-10-15 1982-04-23 Sony Corp Dynamic speaker
US4471173A (en) * 1982-03-01 1984-09-11 Magnepan, Inc. Piston-diaphragm speaker
JPS619098A (ja) * 1984-06-25 1986-01-16 Hitachi Ltd スピ−カ
US4969197A (en) * 1988-06-10 1990-11-06 Murata Manufacturing Piezoelectric speaker
DE4343324A1 (de) * 1993-12-18 1995-06-22 Nokia Deutschland Gmbh Aufhängung für Konuslautsprecher
CA2230702A1 (fr) * 1995-09-02 1997-03-13 Verity Group Plc Haut-parleurs comprenant un element rayonnant acoustique en forme de panneau
US6044925A (en) * 1998-11-30 2000-04-04 Sahyoun; Joseph Yaacoub Passive speaker

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546106B2 (en) 1996-09-03 2003-04-08 New Transducers Limited Acoustic device
GB2350008A (en) * 1998-04-02 2000-11-15 New Transducers Ltd Acoustic device relying on bending wave action
GB2350008B (en) * 1998-04-02 2001-05-02 New Transducers Ltd Acoustic device
WO1999052324A1 (fr) * 1998-04-02 1999-10-14 New Transducers Limited Dispositif acoustique ayant recours a l'action d'une onde de flexion
WO1999060818A1 (fr) * 1998-05-15 1999-11-25 Harman Audio Electronic Systems Gmbh Haut-parleur a panneaux
US7236601B1 (en) 1998-05-15 2007-06-26 Wolfgang Bachmann Panel loudspeaker
US6836552B1 (en) 1998-06-10 2004-12-28 Harman Audio Electronic Systems Gmbh Panel loudspeakers
EP1100287A1 (fr) * 1999-11-10 2001-05-16 M- Tech(HK) Co. Ltd Haut-parleur
WO2001047320A1 (fr) * 1999-12-21 2001-06-28 New Transducers Limited Haut-parleurs
GB2371941A (en) * 1999-12-21 2002-08-07 New Transducers Ltd Loudspeakers
WO2002013575A1 (fr) * 2000-08-03 2002-02-14 New Transducers Limited Haut-parleur a ondes de flexion
US6826285B2 (en) 2000-08-03 2004-11-30 New Transducers Limited Bending wave loudspeaker
EP1604750A1 (fr) * 2004-06-08 2005-12-14 ACHENBACH BUSCHHÜTTEN GmbH Dispositif pour mesurer la distribution de la tension dans une bande métallique

Also Published As

Publication number Publication date
DE19757098C2 (de) 2003-01-09
EP0924960A3 (fr) 2005-04-13
DE19757098A1 (de) 1999-06-24
JPH11252684A (ja) 1999-09-17
DE59814416D1 (de) 2010-01-07
US6160898A (en) 2000-12-12
EP0924960B1 (fr) 2009-11-25

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