EP1518756B1 - Transducteur électroacoustique pour un dispositif à mains libres - Google Patents

Transducteur électroacoustique pour un dispositif à mains libres Download PDF

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Publication number
EP1518756B1
EP1518756B1 EP20040022881 EP04022881A EP1518756B1 EP 1518756 B1 EP1518756 B1 EP 1518756B1 EP 20040022881 EP20040022881 EP 20040022881 EP 04022881 A EP04022881 A EP 04022881A EP 1518756 B1 EP1518756 B1 EP 1518756B1
Authority
EP
European Patent Office
Prior art keywords
electro
acoustic transducer
sound
pivot arm
arm
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 - Fee Related
Application number
EP20040022881
Other languages
German (de)
English (en)
Other versions
EP1518756A1 (fr
Inventor
Gunter Weidemann
Jochen Wenninger
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.)
Beyerdynamic GmbH and Co KG
Original Assignee
Beyerdynamic GmbH and Co KG
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
Priority claimed from DE10348166A external-priority patent/DE10348166A1/de
Application filed by Beyerdynamic GmbH and Co KG filed Critical Beyerdynamic GmbH and Co KG
Publication of EP1518756A1 publication Critical patent/EP1518756A1/fr
Application granted granted Critical
Publication of EP1518756B1 publication Critical patent/EP1518756B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Definitions

  • the invention relates to an electroacoustic transducer unit for a hands-free device according to the preamble of claim 1.
  • a generic electro-acoustic transducer unit preferably with a loudspeaker, for a hands-free system of a mobile phone in an automobile, which is attachable in the upper seat back region, for example, goes from the EP 0 917 988 A1 out.
  • This transducer unit is mounted between a seat back and a headrest on or between two headrest supports. The attachment takes place for example as an entrapment between the headrest supports by a longitudinal suspension or a Searchnver sectionerie a part of the converter unit.
  • the housing next to a speaker as a converter still has a microphone holder with a flexible arm. The problem with this converter unit is the arrangement of the speaker between the two headrest supports.
  • Electroacoustic transducer units in which loudspeakers in the headrest of a seat and a microphone are arranged on a support fixed to the headrest, also go out of the JP 11-113080 as well as the EP 0 715 575 B1 out.
  • a vehicle hands-free device in which the loudspeaker is arranged at the top of a seat back.
  • the DE 100 43 918 A1 discloses a vehicle speakerphone device in which both the speaker and the microphone are located at the top of a rear seatback.
  • the loudspeaker is behind the head of a person sitting on the seat. This arrangement of the speaker leads to an unfavorable sound transmission.
  • a hands-free device for telephone devices out which has a speaker and a microphone in at least one preferably adjustable by means of a drive hearing device.
  • the hearing aid can be arranged laterally on a head restraint of a vehicle seat, wherein a microphone is integrated in a swing-out front element at one position and a speaker at another position. In this way, the hearing aid attaches itself to the ear of a user similar to a listener, so that listening to the loudspeaker reproduction is not possible for other passengers of the vehicle.
  • This hands-free device has a complex structure with two pivot joints, which can lead to an unfavorable sound transmission behavior, especially with regard to prevailing in a vehicle vibrations, vibrations and the like.
  • the distance between the speaker and the microphone is fixed and so not adjustable to different head measurements of a person.
  • the microphone is in this handsfree construction by design side by side with the head, and can not be in front of the Mouth be swung. Even in the case of an accident, this device is problematic, since the rigidly trained hearing aid can cause injuries by a vehicle crash on the head.
  • a hands-free device for a mobile phone in a motor vehicle comprising a tubular bifurcated bracket, the first end is fixedly connected to a mounting arrangement and having a second and third end, wherein an earphone is attached to the second end of the tubular forked support and a Microphone is attached to the third end of the tubular forked bracket.
  • the hands-free device is attached to a headrest support of a motor vehicle seat. Also in this speakerphone the distance between the microphone and earphones is fixed and therefore not adjustable to the head dimensions of different people.
  • the tubular holder allows an adverse structure-borne sound transmission from the speaker to the microphone. The attachment of the speakerphone by means of a single flexible support on the headrest support can eventually lead to adverse vibrations of the entire speakerphone in case of shocks.
  • the invention has for its object to improve in an electroacoustic transducer unit for a speakerphone of a vehicle, the acoustic transmission behavior to the effect that in particular the noise nuisance for other people and the transmission of disturbing driving and vehicle noise minimized while improving speech intelligibility. Furthermore, the risk of accidents emanating from such a converter unit should be minimized.
  • a deformable, in particular elastically formed pivot arm on which at least one sound transmission means is arranged, and by a arranged on the pivot arm flexible arm on which at least one sound receiving means is arranged can by variations of the spatial arrangement of the microphone and sound outlet, the functionality of a telephone very be simulated advantageous.
  • the deformable, especially elastic trained swing arm also reduces the risk of injury in the event of an accident.
  • the swivel arm is arranged on a holding arrangement, which in turn, when used in a vehicle, is fastened to, for example, the headrest, the seat back or a body part of the vehicle.
  • the arrangement of the electro-acoustic transducer unit on the headrest has the great advantage of automatic height adjustment for different body sizes of persons using the hands-free device. In conjunction with the deformable, in particular elastically designed pivoting arm and the flexible arm, this also reduces the influence of external vibrations and vibrations on the microphone.
  • the swivel arm preferably has a swiveling axis which is displaceable in the longitudinal direction. This advantageously allows not only the angular arrangement of the pivoting arm, but also the adjustment of the distance of the sound transmission means and the sound receiving means of the attachment point of the transducer unit, for example on a headrest of a vehicle.
  • the sound transmission means may for example be at least one loudspeaker arranged in or on the swivel arm.
  • the at least one sound transmission means is at least one sound outlet opening at least one arranged in the pivot arm sound guide channel, which is schal facedd connected to at least one arranged in or on the holding device loudspeaker.
  • the speaker is arranged separately from the sound outlet.
  • the sound guide channel is schal consideredd connected to at least one arranged in or on the pivot arm loudspeaker.
  • the speaker is part of the swivel arm.
  • the sound outlet is advantageously covered with an acoustically permeable material to avoid contamination.
  • This material may be, for example, a foam, a mesh or a fabric.
  • a plurality, preferably arranged in the longitudinal direction of the pivot arm sound outlet openings are provided, which are at least partially closed by blind plugs.
  • the sound receiving means is preferably a microphone.
  • microphones without directivity can be used.
  • microphones are used with directivity, which can be optimally aligned on the mouth of a person due to the flexible arm.
  • the pivot arm is connected to the holding device both electrically and mechanically detachable, for example by plug or the like.
  • At least one pressure equalization opening is provided in the vicinity of the loudspeaker, preferably opposite the at least one sound outlet opening.
  • electronic circuits are arranged in the pivoting arm and / or in the holding device, so that not only a mounting of separate circuit arrangements can be omitted, but in particular the laying of interference-sensitive signal lines, for example, in the seat back or the like can be omitted. In this way, then only supply lines or interference-insensitive signal lines, for example in the seat back and in the headrest supports, must be provided.
  • the pivot arm to the holding device so that it can be locked in any desired angular positions and with an arbitrarily longitudinally displaced pivot axis.
  • the pivot arm on the holding device in predetermined positions, which are also adapted to standard body dimensions of persons, can be arranged.
  • An electroacoustic transducer unit for a hands-free unit in a vehicle shown in FIG Fig. 1 and Fig. 2 , comprises a holding plate 210 arranged on a headrest 100 of a vehicle (not shown) to which a housing element 220 can be fastened.
  • the attachment of the holding plate 210 is effected for example by screw 217 provided in the holding plate 210 curved slots 214 that allow attachment at an angle to the vertical of the holding plate 210 to the headrest 100.
  • a further housing element 230 is arranged on the housing element 220.
  • the housing element 220 can be arranged on the holding plate 210 in different angular positions and thus adapted to the dimensions of a head 500 of a person, in particular to the ear 510 of this person.
  • angularly offset provided, for example, threaded holes 222 in the housing member 220, in the on the retaining plate provided screws 212 engage.
  • a speaker 240 is arranged in the housing member 230.
  • Circuit arrangements for example preamplifiers, equalizers, signal processing circuits or the like (not shown) can furthermore be arranged in the housing element 220 as well as in the housing element 230.
  • a sound guide channel 310 is arranged in the elastic pivot arm 300 and is connected in a sound conducting manner to the loudspeaker 240.
  • the acoustic signals emitted by the loudspeaker are transmitted through the sound guide channel 310 to a sound outlet 320 located adjacent to the person's ear 510 ( Fig. 2 ).
  • the sound outlet 320 is covered, for example, with an acoustically permeable material, such as a foam, a grid or a fabric, so as to prevent the ingress of dirt into the sound guide channel 310.
  • a pressure equalization port 236 serves to avoid adverse pressure conditions of the built-in speaker 240.
  • the flexible arm 400 is adjoined by a flexible arm 400, which carries a sound receiving means in the form of a microphone 410 at its front end.
  • a flexible arm 400 which carries a sound receiving means in the form of a microphone 410 at its front end.
  • the microphone 410 can be placed in a favorable position with respect to the sound transmission behavior in front of the mouth 520 of the person ( Fig. 2 ).
  • this flexible arm 400 in particular microphones with directivity can be advantageously used and positioned.
  • the swing arm 300 may, as in Fig. 3 shown having an axis 350 which in the in Fig. 3 is longitudinally displaceable with A directions. He is also along the direction indicated by double arrow W directions pivotable and adaptable to different spatial positions.
  • the microphone 410 is rotatably positionable by means of the flexible, for example, formed as a gooseneck arm 400 along the directions designated P.
  • the flexible for example, formed as a gooseneck arm 400 along the directions designated P.
  • a plurality of sound outlet openings can be provided, some of which can be closed, for example, by blind plugs 321, 322. This allows an optimal spatial arrangement of the non-closed sound outlet 320 relative to the ear of a person without the pivot arm 300 must be adjusted, for example, rotated or moved.
  • the pivot arm 300, the housing parts 220, 230 and the holding plate 210 may, as in Fig. 1 shown, consist of separate parts, but also be wholly or partially formed in one piece.
  • the sound conduction through the sound guide channel 310 in the swing arm and the arrangement of the speaker 240 in the housing part 230 is advantageous not only in terms of an improved visual appearance. This arrangement also significantly reduces the risk of accidents, since the speaker, which regularly has a larger and heavier design than, for example, the microphone 410, is not located near the ear and so can not contribute to injuries, for example in a vehicle crash.
  • the microphone 410 is arranged on the flexible arm 400 and can thus avoid an accident.
  • the sound guide channel 310 and the sound outlet 320 may also be provided to arrange a speaker directly in the vicinity of the ear.
  • electrical connecting lines to the loudspeaker extend inside the deformable elastic swivel arm 300. Due to the deformable, elastic design the swing arm 300 also in this case minimizes the risk of injury to rigid assemblies known in the art.
  • the arrangement of the elastic pivot arm 300 which, as in Fig. 2 schematically, can be optimally adjusted to the connection axis between the mouth 520 and the ear 510
  • the arrangement of the microphone 410 on the elastic arm 400 can provide the spatial arrangement of a microphone and a sound outlet of a telephone handset with all the advantages of sound transmission quality; which has a telephone handset to be simulated. Due to the arrangement of the sound outlet in the immediate vicinity of the ohm, only a small noise pollution of other persons arises. In addition, there is only a small risk of feedback due to sufficient distance to the microphone 410. This minimizes in particular the case of hands-free devices that are transmitted, for example via speakers in the vehicle interior, resulting Hall effects. As a result, a very good spatial location of the sound signal and thus increased speech intelligibility is possible.
  • the speaker 240 can be mounted on the housing part 230 by snap-in contact simultaneously mechanically and electrically and disassembled and can also be retrofitted. Furthermore, it can be provided that the housing part 230 with the housing part 220 and / or the housing part 220 with the mounting plate 210 via contact connections 224, 234, for example, plug contacts or spring contacts, is electrically connected.
  • the invisible electrical conduit means for example a cable 227, pass directly through the pivoting arm 300 via the housing members 230, 220 and 210, for example through an opening 213 in the retaining plate 210 and a corresponding opening in the headrest 100 into the headrest 100 and from there, for example by a headrest support 110 in the seat back and from this to other electrical equipment of the vehicle.
  • the electroacoustic transducer unit is not on the right side of the headrest, as in Fig. 2 shown, but can also be arranged on the left side.
  • the device can be arranged purely in principle in the upper seat back region or on a body part of the vehicle, for example on the B-pillar.
  • the holding plate 210 may already be provided on the seat factory, so that retrofitting a prescribed hands-free device is possible at any time.
  • FIG. 4 illustrated embodiment of an electroacoustic transducer unit are the same elements with the same reference numerals, so that with respect to their description to the above reference is made.
  • the pivot arm 300 ' is formed as a very thin, tubular part, to which the flexible arm 400, which carries the microphone 410, connects.
  • the pivot arm 300 'as the support arm 400 flexible. In this case fall arm 300 'and arm 400 together.
  • the sound conduction channel 310 ' can be formed, for example, by a flexible hose, which is attached to the pivot arm 300' and optionally the support arm 400.
  • the above-described electro-acoustic transducer unit for a hands-free device can be used in different vehicles, such as motor vehicles, commercial vehicles such as trucks, buses, but also in construction machinery, such as excavators, cranes and the like, but also in rail vehicles or in ships or aircraft.
  • the hands-free device can be used in telephony, or as a paging system, for example in buses or as an input system for navigation systems with voice output or for voice operation of communication devices in vehicles, for example, to operate radios, CD players or other entertainment media in vehicles.
  • the hands-free device can also be used to reproduce the signals of these devices or systems.
  • the electroacoustic transducer unit can also be used at any other locations, for example for voice control of a machine.
  • she can, as in Fig. 5 represented, for example, on a wall 600 or a machine part or the like. Be arranged.
  • the pivot arm 300 "has a multi-curved shape, so that the sound outlet opening 320" and the microphone 410 are optimally adapted to the ear 510 and the mouth of a person 500.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Telephone Set Structure (AREA)

Claims (15)

  1. Transducteur électroacoustique pour une installation à mains libres, le transducteur étant réalisé pour être installé dans la région de la tête et il comporte un bras souple (400) muni d'au moins un moyen de prise de son (410),
    caractérisé par
    un bras pivotant (300 ; 300' ; 300") déformable élastiquement, portant au moins un moyen de transmission de son et
    le bras souple (400) est prévu sur le bras pivotant (300 ; 300' ; 300").
  2. Transducteur électroacoustique selon la revendication 1,
    caractérisé en ce que
    le bras pivotant (300 ; 300' ; 300") est relié de manière amovible à l'installation de fixation (210, 220).
  3. Transducteur électroacoustique selon la revendication 1 ou 2,
    caractérisé en ce que
    le bras pivotant (300 ; 300' ; 300") comporte un axe de pivotement (350) coulissant dans la direction longitudinale (A).
  4. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé par
    au moins un moyen de transmission de son est un haut-parleur prévu sur ou dans le bras pivotant (300 ; 300' ; 300").
  5. Transducteur électroacoustique selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    au moins un moyen de transmission de son comporte au moins un orifice de sortie de son (320 ; 320' ; 320") d'un canal de conduction phonique (310) prévu dans ou sur le bras pivotant (300 ; 300' ; 300"), ce canal étant relié en conduction sonore avec au moins un haut-parleur (240) prévu dans ou sur l'installation de fixation.
  6. Transducteur électroacoustique selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    au moins un moyen de transmission de son est constitué par au moins un orifice de sortie de son (320 ; 320' ; 320") d'au moins un canal de conduction phonique (310) prévu dans ou sur le bras pivotant (300 ; 300' ; 300"), ce canal étant en liaison de conduction phonique avec au moins un haut-parleur (240) prévu dans ou sur le bras pivotant (300 ; 300' ; 300").
  7. Transducteur électroacoustique selon la revendication 5 ou 6,
    caractérisé en ce qu'
    au moins un orifice de sortie de son (320 ; 320' ; 320") est couvert par une matière transparente du point de vue acoustique.
  8. Transducteur électroacoustique selon la revendication 7,
    caractérisé en ce que
    la matière transparente du point de vue acoustique est une mousse, une grille ou un tissu.
  9. Transducteur électroacoustique selon l'une des revendications précédentes
    caractérisé par
    plusieurs orifices de sortie de son (320 ; 320' ; 320") prévus de préférence dans la direction longitudinale du bras pivotant (300 ; 300' ; 300"), ces orifices pouvant être au moins partiellement fermés par des bouchons borgnes (321, 322).
  10. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé en ce qu'
    au moins un moyen de prise de son est un microphone (410).
  11. Transducteur électroacoustique selon la revendication 10,
    caractérisé en ce qu'
    au moins un microphone (410) est directionnel.
  12. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé en ce que
    le bras pivotant (300 ; 300' ; 300") est relié de manière amovible électriquement et mécaniquement à l'installation de fixation.
  13. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé par
    au moins un orifice d'équilibrage de pression (236) prévu à proximité du haut-parleur (240), de préférence en regard d'au moins un orifice de sortie de son (320 ; 320' ; 320").
  14. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé par
    des circuits électroniques installés dans le bras pivotant (300 ; 300' ; 300") et/ou dans l'installation de fixation.
  15. Transducteur électroacoustique selon l'une des revendications précédentes,
    caractérisé en ce que
    le bras pivotant (300 ; 300' ; 300") de l'installation de fixation se monte dans des positions prédéfinies.
EP20040022881 2003-09-25 2004-09-24 Transducteur électroacoustique pour un dispositif à mains libres Expired - Fee Related EP1518756B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10344746 2003-09-25
DE10344746 2003-09-25
DE10348166 2003-10-16
DE10348166A DE10348166A1 (de) 2003-09-25 2003-10-16 Elektroakustische Wandlereinheit für eine Freisprecheinrichtung

Publications (2)

Publication Number Publication Date
EP1518756A1 EP1518756A1 (fr) 2005-03-30
EP1518756B1 true EP1518756B1 (fr) 2008-11-05

Family

ID=34195772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040022881 Expired - Fee Related EP1518756B1 (fr) 2003-09-25 2004-09-24 Transducteur électroacoustique pour un dispositif à mains libres

Country Status (1)

Country Link
EP (1) EP1518756B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107071619A (zh) * 2017-05-02 2017-08-18 杨小龙 一种头枕安装三轴定位旋转式车载蓝牙耳机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4151468A (en) * 1977-08-25 1979-04-24 Kerr Leslie I Microphone holder attachment and switch control therefor
US4215250A (en) * 1978-10-18 1980-07-29 Western Electric Company, Inc. Microphone support with simultaneous adjustment of plural degrees of freedom
US5446788A (en) * 1992-09-29 1995-08-29 Unex Corporation Adjustable telephone headset
FR2714875B1 (fr) * 1994-01-10 1998-08-28 Claude Collet Insert téléphonique main libre de voiture.
US5761298A (en) * 1996-05-31 1998-06-02 Plantronics, Inc. Communications headset with universally adaptable receiver and voice transmitter
US6108566A (en) * 1998-03-23 2000-08-22 Albanese; Thomas J. Hands-free mobile telephone
DE29909964U1 (de) * 1999-06-08 1999-09-02 Wang Chin Yang Freisprecheinrichtung
US20030003969A1 (en) * 2001-06-29 2003-01-02 Eric Tong Cellular telephone headset

Also Published As

Publication number Publication date
EP1518756A1 (fr) 2005-03-30

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