EP0015013A1 - Universelles Kalottenlautsprecher-Bauelement - Google Patents

Universelles Kalottenlautsprecher-Bauelement Download PDF

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Publication number
EP0015013A1
EP0015013A1 EP80200068A EP80200068A EP0015013A1 EP 0015013 A1 EP0015013 A1 EP 0015013A1 EP 80200068 A EP80200068 A EP 80200068A EP 80200068 A EP80200068 A EP 80200068A EP 0015013 A1 EP0015013 A1 EP 0015013A1
Authority
EP
European Patent Office
Prior art keywords
permanent magnet
dome
magnet system
molded part
voice coil
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Withdrawn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
EP80200068A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kurt Kolbe
Hermann Gruber
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.)
Alcatel Lucent Deutschland AG
International Standard Electric Corp
Original Assignee
Alcatel SEL AG
Standard Elektrik Lorenz AG
International Standard Electric Corp
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 Alcatel SEL AG, Standard Elektrik Lorenz AG, International Standard Electric Corp filed Critical Alcatel SEL AG
Publication of EP0015013A1 publication Critical patent/EP0015013A1/de
Withdrawn legal-status Critical Current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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers

Definitions

  • the invention relates to a spherical speaker, consisting of a permanent magnet system, a membrane holder arranged on the permanent magnet system, to which a spherical membrane with a voice coil is to be attached.
  • dome loudspeakers are known (DE-PS 21 10 446 and catalog "Loudspeaker 1978/79 of ITT Baurii Group Europe pages 112 to 120).
  • the membrane holder is designed as a disk-shaped loudspeaker basket, in which the fastening openings, the sound opening and Limiting webs for the installation of the spherical speaker are integrated into a baffle from the front or rear.
  • a disadvantage of the known dome speaker regardless of whether it is designed as a tweeter or mid-range dome speaker, is that its installation dimensions are fixed. But especially in the main area of application of the dome loudspeakers, namely when installed in loudspeaker boxes, the manufacturers of loudspeaker boxes would prefer dome loudspeakers whose installation dimensions are neutral with regard to the dimensions and / or the design of the loudspeaker box. This can be achieved with the known dome loudspeakers only with considerable effort because a large number of disk-shaped loudspeaker baskets of the type mentioned at the beginning Art would have to be produced, each requiring its own expensive tool.
  • the object on which the invention is based is therefore to create a dome loudspeaker component which, although a fully functional dome loudspeaker, has no fastening plate, no three-dimensionally designed sound opening and no boundary webs.
  • the membrane holder is designed as a flat molded part, which is matched on its inside to the pole plate of the permanent magnet system, with the circular central opening of which the spherical membrane is permanently connected to the voice coil.
  • the new dome loudspeaker component is, within very wide limits, independent of its later use, for example in a loudspeaker box.
  • it can be attached to a baffle directly from the rear without a mounting plate, wherein an individually dimensioned sound opening can be incorporated into the baffle.
  • the new dome speaker component can also be supplemented by an individually designed mounting plate according to the physical conditions or aesthetic requirements of the product.
  • several dome loudspeaker components for example two tweeters or one tweeter and one mid-range speaker, can be attached to a common, individually designed fastening plate.
  • the new dome loudspeaker component can be optimally dimensioned - regardless of its later location - and in large quantities - and therefore economically.
  • the dome loudspeaker component has a known permanent magnet system 1, consisting of an annular ceramic permanent magnet ring, the pole core inserted into the base plate and the annular disk-shaped pole plate.
  • the dome loudspeaker component only consists of the molded part 3 serving as a diaphragm holder, in the central circular opening of which the dome diaphragm 5 is fixed, for example glued, with a voice coil 6.
  • the molded part is made of non-magnetizable metal, such as aluminum or high-temperature-resistant plastic, such as polyamide.
  • annular recess is formed on the back of the molded part 3, which forms an annular channel 7 in the finished dome loudspeaker component, which on three sides of the recess of the molded part 3 and is bounded on the fourth side by the surface of the pole plate.
  • the annular channel 7 is connected to the air gap via a few slots 11 (FIG. 2) in its boundary wall facing the air gap.
  • the molded part is provided with fastening openings 10 so that it can be fastened to the permanent magnet system by means of screws or rivets.
  • the lead-out of the voice coil connections takes place in that connecting leads 9 are embedded in flat, radially running grooves in the completely flat molded part outer surface, which are connected at one end to the connecting eyes 4 and at the other end to the connections of the voice coil.
  • the pole core of the permanent magnet system 1 can be provided with a cup-shaped cavity 8, the opening of which is closed with an air-permeable disk 2, for example made of foamed plastic.
  • the air volume located in the cavity 8, together with the air volume in the air gap and the annular channel 7, causes the calotte membrane 5 to be guided smoothly and counteracts an increase in impedance at the resonance frequency.
  • the proposed dome loudspeaker component is a fully functional dome loudspeaker, although of a very simple construction and therefore inexpensive to manufacture. It can be unchanged from the back into one Baffle to be installed. However, it can also be attached individually or in groups to an individually designed mounting plate and arranged together with this on a baffle.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Saccharide Compounds (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Steroid Compounds (AREA)
EP80200068A 1979-02-14 1980-01-24 Universelles Kalottenlautsprecher-Bauelement Withdrawn EP0015013A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2905566 1979-02-14
DE2905566A DE2905566A1 (de) 1979-02-14 1979-02-14 Universelles kalottenlautsprecher- bauelement

Publications (1)

Publication Number Publication Date
EP0015013A1 true EP0015013A1 (de) 1980-09-03

Family

ID=6062876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80200068A Withdrawn EP0015013A1 (de) 1979-02-14 1980-01-24 Universelles Kalottenlautsprecher-Bauelement

Country Status (5)

Country Link
EP (1) EP0015013A1 (ja)
JP (1) JPS55130300A (ja)
DE (1) DE2905566A1 (ja)
DK (1) DK60880A (ja)
NO (1) NO800275L (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579110B (zh) * 2002-09-04 2010-04-28 松下电器产业株式会社 扬声器

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5950196U (ja) * 1982-09-27 1984-04-03 ティーオーエ株式会社 拡声器駆動部
JPS6372992U (ja) * 1986-10-31 1988-05-16
DE4031742A1 (de) * 1990-10-06 1992-04-09 Nokia Unterhaltungselektronik Kalotten-hochton-lautsprecher
JP3562383B2 (ja) * 1998-06-02 2004-09-08 株式会社村田製作所 スピーカ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079471A (en) * 1961-03-01 1963-02-26 Ampex Loudspeaker
DE1817431A1 (de) * 1967-12-30 1969-08-14 Nippon Musical Instruments Mfg Hochtonlautsprecher
US3780232A (en) * 1971-01-04 1973-12-18 Rola Celestion Ltd Loudspeaker diaphragm
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
GB1371338A (en) * 1971-12-09 1974-10-23 Emi Ltd Loudspeakers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3079471A (en) * 1961-03-01 1963-02-26 Ampex Loudspeaker
DE1817431A1 (de) * 1967-12-30 1969-08-14 Nippon Musical Instruments Mfg Hochtonlautsprecher
US3780232A (en) * 1971-01-04 1973-12-18 Rola Celestion Ltd Loudspeaker diaphragm
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
GB1371338A (en) * 1971-12-09 1974-10-23 Emi Ltd Loudspeakers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1579110B (zh) * 2002-09-04 2010-04-28 松下电器产业株式会社 扬声器

Also Published As

Publication number Publication date
DE2905566A1 (de) 1980-08-28
DK60880A (da) 1980-08-15
JPS55130300A (en) 1980-10-08
NO800275L (no) 1980-08-15

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19811117

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOLBE, KURT

Inventor name: GRUBER, HERMANN