EP0280162A2 - Enceinte acoustique avec boîtier hermétique - Google Patents

Enceinte acoustique avec boîtier hermétique Download PDF

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Publication number
EP0280162A2
EP0280162A2 EP88102253A EP88102253A EP0280162A2 EP 0280162 A2 EP0280162 A2 EP 0280162A2 EP 88102253 A EP88102253 A EP 88102253A EP 88102253 A EP88102253 A EP 88102253A EP 0280162 A2 EP0280162 A2 EP 0280162A2
Authority
EP
European Patent Office
Prior art keywords
housing part
housing
box according
seal
ribs
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Withdrawn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
EP88102253A
Other languages
German (de)
English (en)
Other versions
EP0280162A3 (fr
Inventor
Karl-Heinz Dipl.-Phys. Thiele
Werner Ing. Grad. Stehn
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.)
EWD Electronic-Werke Deutschland GmbH
Original Assignee
EWD Electronic-Werke 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 EWD Electronic-Werke Deutschland GmbH filed Critical EWD Electronic-Werke Deutschland GmbH
Publication of EP0280162A2 publication Critical patent/EP0280162A2/fr
Publication of EP0280162A3 publication Critical patent/EP0280162A3/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Withdrawn legal-status Critical Current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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/025—Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture
    • 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
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Definitions

  • a muffled loudspeaker box must be airtight on all sides, otherwise there may be acoustic short circuits for certain frequencies and turbulence and interference noises may arise through air openings. Several constructive measures are generally required to achieve the airtight seal.
  • the invention has for its object to provide an airtight sealed speaker box, which consists of a small number of components and is particularly quick and easy to assemble.
  • the loudspeaker box according to the invention essentially consists of only three parts, namely the loudspeaker, a housing upper and lower part. These parts are assembled manually or mechanically using a positive locking connection, a so-called snap-in. Through this assembly, the airtight closure of the parts mentioned is achieved at the same time to form an airtight sealed speaker box.
  • the parts can be assembled by means of a pure translational movement and can therefore be carried out easily, in particular with automatic machines. Subsequent measures to achieve the airtight seal are not necessary.
  • the shape of the entire loudspeaker box is preferably designed such that walls of the box lying opposite one another are not parallel to one another. This causes asymmetry achieved reflection surfaces and a diffuse sound field and standing waves, which can lead to noise during playback, are avoided.
  • the box is preferably provided on the inner wall of the housing or of the rear housing part with a multiplicity of ribs, which on the one hand serve to stiffen and in addition to generate a diffuse sound field and also to avoid standing waves which occur in a e.g. cuboid box occur.
  • Ribs preferably run in the front housing part approximately in the radial direction to the center of a woofer, while in the rear housing part rectangular structures are arranged with respect to the plane perpendicular to the direction of radiation of the loudspeaker.
  • the ribs are arranged on the front and rear housing parts so differently that they act as diffusers on the sound field inside the box.
  • the projection of the ribs of the front and rear housing parts preferably have different angular positions in relation to the direction of radiation of the loudspeaker.
  • the airtight seal is only necessary for the frequency range of the audible sound signals, that is to say down to a frequency of 50 Hz.
  • the loudspeaker box does not need to be statically airtight, ie to keep a certain overpressure or underpressure indefinitely.
  • Preferred two The shape of the loudspeaker box is adapted to the shape of the picture tube in a television receiver. As a result, the relatively narrow available space between the picture tube and the side wall in a television receiver can be optimally used. Despite the relatively small dimensions of the space available for the box, a sufficiently large volume is created for the box, which is necessary for sufficient damping.
  • the loudspeaker box contains a housing 1.
  • the loudspeaker 3 is inserted from the front, that is to say from the left, and is positively held on the front wall 2 via a latching connection 4.
  • the locking connection 4 is formed in that resilient lugs 5 engage on the front wall 2 behind rigid edges on the loudspeaker frame.
  • the airtight seal between the front flange 6 of the loudspeaker 3 and the front wall 2 is formed by an inserted seal 7, for example made of rubber.
  • the housing part 8 is placed in the direction 9 on the rear end of the housing 1 and is positively held on the housing 1 by a plurality of form-fitting snap-in connections 10 distributed over the circumference.
  • the airtight seal is formed by the inserted seal 11 between the housing 1 and the rear housing part 8.
  • the rear housing part 8 is provided with a multiplicity of ribs 12, which serve for stiffening and, in addition, through multiple reflections to generate a diffuse sound field and thus to avoid standing waves.
  • On its front is the housing 1 with the interposition of a grid 13 attached to the side wall 14 of a television receiver housing.
  • the outer shape of the rear housing part 8 is adapted to the shape of the picture tube 15 provided in the television receiver. This results in an optimal utilization of the relatively narrow space present in a television receiver between the side wall 14 and the picture tube 15.
  • Fig. 2 shows a view of the open side of the housing part 8 alone.
  • the housing part 8 is provided on its inside with a plurality of ribs 12 which form a mosaic-like field with surfaces delimited by ribs.
  • the ribs 12 serve on the one hand to stiffen the housing part 8 and on the other hand in the manner described to promote a diffuse sound field inside the box and to avoid standing waves.
  • the housing part 8 On its peripheral edge, the housing part 8 contains a peripheral groove 16 into which the seal 11, e.g. in the form of a round rubber piping, is inserted manually.
  • the seal 11 is not designed as a closed ring, but rather as a meter with two ends.
  • the circumferential groove 16 contains two short regions 16a and 16b which are located directly next to one another.
  • the two ends of the inserted seal 11 lie directly next to one another in the sections 16a, 16b and, after the parts 1, 8 have been assembled, bring about a continuous airtight seal like an annular, endless seal.
  • Tappers 17 are provided on the peripheral edge of the groove 16. These serve to guide the seal 11 to be inserted into the groove 16 during manual insertion and to facilitate the insertion of the seal 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
EP19880102253 1987-02-26 1988-02-17 Enceinte acoustique avec boítier hermétique Withdrawn EP0280162A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873706158 DE3706158A1 (de) 1987-02-26 1987-02-26 Lautsprecherbox mit einem luftdicht abgeschlossenen gehaeuse
DE3706158 1987-02-26

Publications (2)

Publication Number Publication Date
EP0280162A2 true EP0280162A2 (fr) 1988-08-31
EP0280162A3 EP0280162A3 (fr) 1990-12-12

Family

ID=6321798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880102253 Withdrawn EP0280162A3 (fr) 1987-02-26 1988-02-17 Enceinte acoustique avec boítier hermétique

Country Status (4)

Country Link
EP (1) EP0280162A3 (fr)
JP (1) JPS63296598A (fr)
KR (1) KR880010620A (fr)
DE (1) DE3706158A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819217A1 (de) * 1988-06-06 1989-12-07 Meggl Friedemann Lautsprechersystem
EP0462571A1 (fr) * 1990-06-21 1991-12-27 Matsushita Electric Industrial Co., Ltd. Arrangement de haut-parleurs dans le coffret d'un téléviseur
DE9307838U1 (de) * 1993-05-25 1993-07-22 Nokia (Deutschland) GmbH, 7530 Pforzheim Fernsehgerät
GB2312130A (en) * 1996-04-09 1997-10-15 Lg Electronics Inc A resilient gasket attenuates vibrations from a loudspeaker in the housing of a video display apparatus
EP1773092A2 (fr) * 2005-10-04 2007-04-11 Gealan Formteile GmbH Enceinte avec dispositif d'étanchéité

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7876923B2 (en) 2006-02-27 2011-01-25 Finnegan Brendan J Loudspeaker gasketing
DE202009003630U1 (de) 2009-03-14 2009-06-25 Poremba, Damian, Dipl.-Volksw. Lautsprecherbox mit Druckunterschied
JP6282172B2 (ja) * 2014-05-19 2018-02-21 シャープ株式会社 スピーカボックスおよびテレビ受信装置
JP6619464B2 (ja) * 2018-01-23 2019-12-11 シャープ株式会社 スピーカボックスおよびテレビ受信装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7502568U (de) * 1975-11-06 Blaupunkt Werke Gmbh Dynamischer Lautsprecher
GB1229451A (fr) * 1968-01-18 1971-04-21
DE1930444A1 (de) * 1969-06-14 1970-12-23 Demag Zug Gmbh Bremse mit einer Einrichtung zum UEberwachen der Bremsstellung und des Verschleisszustandes eines Bremsbelages
DE2139063C3 (de) * 1971-08-04 1975-05-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Abdeckhaube für Lautsprecher
US3953675A (en) * 1972-05-08 1976-04-27 Babbco, Ltd. Audio speaker system
US3835256A (en) * 1973-07-09 1974-09-10 H Wieder Loudspeaker enclosure
FR2371846A1 (fr) * 1976-09-14 1978-06-16 Estoueig Pierre Systeme d'enceinte acoustique
DE2920395A1 (de) * 1979-05-19 1980-11-27 Michele Orsogna Halterung fuer lautsprecher in lautsprecherboxen
US4289929A (en) * 1979-09-11 1981-09-15 Epicure Products, Inc. Loudspeaker and enclosure combination
DE3128462C2 (de) * 1981-07-18 1983-07-07 Standard Elektrik Lorenz Ag, 7000 Stuttgart Fernsehempfangsgerät für stereophone Tonwiedergabe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3819217A1 (de) * 1988-06-06 1989-12-07 Meggl Friedemann Lautsprechersystem
EP0462571A1 (fr) * 1990-06-21 1991-12-27 Matsushita Electric Industrial Co., Ltd. Arrangement de haut-parleurs dans le coffret d'un téléviseur
US5604337A (en) * 1990-06-21 1997-02-18 Matsushita Electric Industrial Co., Ltd. Loudspeaker arrangement in television receiver cabinet
DE9307838U1 (de) * 1993-05-25 1993-07-22 Nokia (Deutschland) GmbH, 7530 Pforzheim Fernsehgerät
GB2312130A (en) * 1996-04-09 1997-10-15 Lg Electronics Inc A resilient gasket attenuates vibrations from a loudspeaker in the housing of a video display apparatus
EP1773092A2 (fr) * 2005-10-04 2007-04-11 Gealan Formteile GmbH Enceinte avec dispositif d'étanchéité

Also Published As

Publication number Publication date
DE3706158A1 (de) 1988-09-29
KR880010620A (ko) 1988-10-10
EP0280162A3 (fr) 1990-12-12
JPS63296598A (ja) 1988-12-02

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