EP0582120A1 - Dispositif des haut-parleurs coaxials - Google Patents

Dispositif des haut-parleurs coaxials Download PDF

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Publication number
EP0582120A1
EP0582120A1 EP93111524A EP93111524A EP0582120A1 EP 0582120 A1 EP0582120 A1 EP 0582120A1 EP 93111524 A EP93111524 A EP 93111524A EP 93111524 A EP93111524 A EP 93111524A EP 0582120 A1 EP0582120 A1 EP 0582120A1
Authority
EP
European Patent Office
Prior art keywords
speaker
loudspeaker
pole core
coaxial
cone
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
EP93111524A
Other languages
German (de)
English (en)
Other versions
EP0582120B1 (fr
Inventor
Ulrich Kizak
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 Technology GmbH
Original Assignee
Nokia Technology 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 filed Critical Nokia Technology GmbH
Publication of EP0582120A1 publication Critical patent/EP0582120A1/fr
Application granted granted Critical
Publication of EP0582120B1 publication Critical patent/EP0582120B1/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges

Definitions

  • the invention is concerned with coaxial loudspeaker arrangements, in particular with the assignment of the loudspeakers forming the coaxial loudspeaker system to one another and their contacting.
  • Coaxial loudspeaker arrangements have long been known in the prior art, so that a further discussion of this arrangement can be dispensed with here.
  • a further loudspeaker is arranged within the horn of a first (cone) loudspeaker. Since the cone loudspeaker is a woofer in the usual applications and the additional loudspeaker arranged in the horn is a tweeter, this type of assembly is intended of a coaxial speaker system can be maintained for the following discussion. However, this does not imply a limitation of the equipment to the type discussed above. Rather, the cone speaker can also be designed as a mid-range speaker.
  • the second (tweeter) loudspeaker arranged in the horn can be designed both as a cone and as a dome tweeter.
  • the tweeter with its magnet system is placed directly on the pole core of the cone speaker.
  • the connection of the two aforementioned components is usually designed as an adhesive connection.
  • the contacting of the tweeter with the terminal block of the speaker system is usually solved so that the connection cable of this speaker to the soldering points arranged in the cone speaker and are soldered there.
  • this type of contacting the tweeter is disadvantageous because the connection lines of the tweeter and the soldering point are not insignificantly mechanically stressed by the movement of the cone membrane.
  • this type of contacting requires a number of complex work steps.
  • the connecting wires for the tweeter are threaded through a hole which is embedded in the pole core of the cone speaker.
  • this type of contacting is very complex with regard to the automated production of coaxial loudspeaker arrangements. This is because the tweeter must be held by a tool during the connection to the cone speaker and another tool must be available which is able to thread the connecting cables connected to the tweeter through the hole in the pole core.
  • the crossover is arranged either on the housing of the tweeter or on the housing of the cone loudspeaker, depending on the design of the previously specified cable routing for the tweeter. As can be easily seen, the arrangement of the crossover at the specified locations not only requires special space but also additional soldering work.
  • coaxial loudspeaker arrangements are also known in which the tweeter is inserted into a molded part.
  • the molded part is connected to the edge of the cone speaker, so that the tweeter is arranged by means of the molded part above the cone membrane in the horn.
  • Tweeter is made via connecting cables, which are laid in the molded part or in the housing of the cone speaker.
  • the crossover can be integrated into the molded part or the webs of the molded part.
  • the invention is therefore based on the object of specifying a coaxial loudspeaker arrangement which can be manufactured automatically in a simple manner and which have an increased sound reproduction behavior.
  • pole core of the first loudspeaker is tubular, that the second loudspeaker is connected to a holding mandrel and that the shaft of the holding mandrel is inserted into the bottom of the pole core of the first loudspeaker and is firmly connected to it .
  • the second (tweeter) speaker is connected to the arbor, it is possible to manufacture the tweeter unit completely separately and to connect it to the cone speaker in a simple manner.
  • the latter is therefore particularly simple and therefore easy to automate because the tweeter arranged on the mandrel for connecting the two speakers need only be inserted with the shaft of the mandrel into the pole core of the cone speaker.
  • a penetration of particles into the air gap of the cone loudspeaker is excluded if, according to claim 4, the cone loudspeaker has its largest diameter spanned with a plastic fabric.
  • This plastic fabric does not impair the reproduction quality of the coaxial system if, according to claim 5, the sum of all thread areas that span the bell is a maximum of 25% of the covered area of the bell.
  • FIG. 1 shows a coaxial loudspeaker arrangement 10.
  • This arrangement 10 is formed by a cone loudspeaker 11 and a dome tweeter loudspeaker 12.
  • the essential components of the cone loudspeaker 11 are the magnet system 13, the loudspeaker basket 14 and the membrane 15.
  • the magnet system 13 is formed by ferrite ring 16 and the pole core 17.
  • the voice coil former 18 protrudes with its one end, on which the voice coil 19 is arranged, into the air gap 20 of the cone loudspeaker 11 and is connected at its other end to the membrane 15.
  • the terminal block 21 for the coaxial speaker system 10 is arranged on the side of the speaker basket 14.
  • the pole core 17 is essentially tubular.
  • the dome tweeter 12 is connected to the upper plastic mandrel 22.
  • the shaft 23 of the holding mandrel 22 is inserted to the bottom of the pole core 17 and connected to it.
  • the design of the holding mandrel 22 is shown in more detail in FIG. 2. It can be clearly seen that the connecting lines 24, which are connected to the connecting terminals 25 of the dome tweeter 12, are led through the interior of the hollow shaft 23 to the bottom 26 and emerge from the bottom 26 there.
  • the capacitor 27 forming the crossover is integrated in the interior of the shaft 23 and switched on in the signal path of the connecting lines 24. If it is necessary, the capacitor 27 can also be omitted in another embodiment, not shown here. In this case, the connecting lines 24 are led directly to the bottom 26 of the mandrel 22.
  • An annular thickening 28 is formed on the outer circumference of the otherwise smooth shaft 23. If the holding mandrel 22 of the type shown in FIG. 2 is inserted with the shaft 23 into the tubular opening of the pole core 17 in the thus completed state, the thickening 28 has the task of locking the shaft 23 in a groove of the pole core 17.
  • This latching is shown in FIG. 1 and shows how the shaft 23 in its end position in the pole core 17 engages with the thickening 28 in a hollow-throat shape on the inside of the pole core 17.
  • the connection between the shaft 23 and the pole core 17 can also be designed as a pure adhesive connection.
  • the connecting lines 24, which emerge from the bottom 26 of the holding mandrel 22, are designed as flexible lines. As emphasized in FIG. 1, this allows the connection lines 24 to be connected directly to the terminal block 21 of the system 10.
  • the contact part led out of the bottom 26 can also be designed as a rigid contact tongue (not shown).
  • Such contact tongues allow the coaxial speaker 12 to be contacted by means of corresponding plugs (not shown).
  • the horn 29 of the cone loudspeaker 11 is covered at its largest diameter by means of a plastic mesh 30.
  • a plastic mesh 30, which has a thread thickness of 0.23 mm and a chain of 9 threads per cm and a weft of 14 threads per cm, has proven to be particularly advantageous as a cover.
  • the braid 30 is capable of effectively preventing particles from entering the air gap 20 without adversely affecting the acoustic effect of the system 10, since the sum of all the thread surfaces of this type of fabric covers the surface of the horn 29 only by less than 25%.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
EP93111524A 1992-08-05 1993-07-19 Dispositif des haut-parleurs coaxials Expired - Lifetime EP0582120B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9210463U 1992-08-05
DE9210463U DE9210463U1 (de) 1992-08-05 1992-08-05 Koaxiallautsprecheranordnung

Publications (2)

Publication Number Publication Date
EP0582120A1 true EP0582120A1 (fr) 1994-02-09
EP0582120B1 EP0582120B1 (fr) 1997-01-22

Family

ID=6882352

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93111524A Expired - Lifetime EP0582120B1 (fr) 1992-08-05 1993-07-19 Dispositif des haut-parleurs coaxials

Country Status (4)

Country Link
US (1) US5398288A (fr)
EP (1) EP0582120B1 (fr)
JP (1) JPH0654396U (fr)
DE (2) DE9210463U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003119C2 (nl) * 1996-05-15 1997-11-18 Johan Schouten Beheer B V Luidsprekersysteem.

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5739480A (en) * 1996-09-24 1998-04-14 Lin; Steff Speaker base for alternatively mounting different drivers
US6647122B1 (en) 1998-09-28 2003-11-11 Pioneer Electronics Technology, Inc. Loudspeaker drive unit
DE102006024054B3 (de) * 2006-05-23 2007-09-20 Klaus Reck Koaxiallautsprecher
ATE463132T1 (de) 2007-08-14 2010-04-15 Klaus Reck Koaxiallautsprecher
US9100733B2 (en) 2013-06-05 2015-08-04 Harman International Industries, Inc. Multi-way coaxial loudspeaker with internal magnet motor and permanent magnet cylinder
US9036839B2 (en) 2013-06-05 2015-05-19 Harman International Industries, Inc. Multi-way coaxial loudspeaker with magnetic cylinder

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002843A1 (de) * 1980-01-26 1981-07-30 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn Doppel-ringspalt-magnetsystem fuer dynamische lautsprecher mit unterschiedlichen frequenzbereichen
US4821331A (en) * 1987-06-30 1989-04-11 Pioneer Electronic Corporation Coaxial speaker unit
WO1990005435A1 (fr) * 1988-11-07 1990-05-17 Harman International Industries, Incorporated Haut-parleur peu profond avec structure a aimant a fente

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5850789U (ja) * 1981-09-22 1983-04-06 パイオニア株式会社 車載用複合型スピ−カ
US4465905A (en) * 1982-04-28 1984-08-14 International Jensen Incorporated Loudspeaker assembly
US4837839A (en) * 1987-08-11 1989-06-06 Avm Hess, Inc. Compact speaker assembly with improved low frequency response
US5081684A (en) * 1988-11-07 1992-01-14 Harman International Industries, Incorporated Shallow loudspeaker with slotted magnet structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3002843A1 (de) * 1980-01-26 1981-07-30 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn Doppel-ringspalt-magnetsystem fuer dynamische lautsprecher mit unterschiedlichen frequenzbereichen
US4821331A (en) * 1987-06-30 1989-04-11 Pioneer Electronic Corporation Coaxial speaker unit
WO1990005435A1 (fr) * 1988-11-07 1990-05-17 Harman International Industries, Incorporated Haut-parleur peu profond avec structure a aimant a fente

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1003119C2 (nl) * 1996-05-15 1997-11-18 Johan Schouten Beheer B V Luidsprekersysteem.

Also Published As

Publication number Publication date
EP0582120B1 (fr) 1997-01-22
US5398288A (en) 1995-03-14
JPH0654396U (ja) 1994-07-22
DE59305214D1 (de) 1997-03-06
DE9210463U1 (de) 1992-10-22

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