EP0538702B1 - Konuslautsprecher - Google Patents

Konuslautsprecher Download PDF

Info

Publication number
EP0538702B1
EP0538702B1 EP92117391A EP92117391A EP0538702B1 EP 0538702 B1 EP0538702 B1 EP 0538702B1 EP 92117391 A EP92117391 A EP 92117391A EP 92117391 A EP92117391 A EP 92117391A EP 0538702 B1 EP0538702 B1 EP 0538702B1
Authority
EP
European Patent Office
Prior art keywords
basket
loudspeaker
magnet system
pole plate
upper pole
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 - Lifetime
Application number
EP92117391A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0538702A2 (de
EP0538702A3 (enrdf_load_stackoverflow
Inventor
Jörg Prokisch
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 EP0538702A2 publication Critical patent/EP0538702A2/de
Publication of EP0538702A3 publication Critical patent/EP0538702A3/xx
Application granted granted Critical
Publication of EP0538702B1 publication Critical patent/EP0538702B1/de
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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • 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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit

Definitions

  • the invention is concerned with the construction of cone loudspeakers, in particular with the environmentally friendly connection of loudspeaker basket and magnet system.
  • cone loudspeakers have long been known in the prior art and therefore do not need to be discussed in detail with regard to their structure and mode of operation.
  • the conical speaker basket is conventionally made of either metal or plastic.
  • the magnet system consists of a ring-shaped permanent magnet, a likewise ring-shaped, upper pole plate made of metal and a circular, also made of metal lower pole plate. The two pole plates are connected to the circular surfaces of the permanent magnet.
  • the basket of the loudspeaker is connected to the surface facing away from the permanent magnet.
  • this connection is realized as a riveted connection if the loudspeaker basket is made of metal.
  • so-called rivet slugs are formed on the surface of the upper pole plate facing away from the permanent magnet, which are passed through corresponding openings in the basket base.
  • the area of the respective rivet that protrudes from the basket base is widened by means of riveting and therefore presses the basket base against the upper pole plate.
  • the top pole plate is centered on the speaker basket by the rivet studs.
  • the loudspeaker basket is glued to the magnet system.
  • two-component adhesives are usually used, which, in order to maintain production, require large amounts of solvents and detergents to keep the adhesive nozzle free.
  • the invention is therefore based on the object of specifying a cone loudspeaker which avoids the disadvantages of the previously mentioned loudspeakers and also firmly connects the magnet system to the loudspeaker basket in the case of large and heavy magnet systems.
  • connection between loudspeaker basket and magnet system is designed according to the invention, large and heavy magnet systems of cone loudspeakers with a diameter of up to 20 cm can also be securely and firmly connected to the loudspeaker basket. As case tests have shown, despite the simple and residue-free possibility of separating the loudspeaker basket from the magnet system, there is no fear that the magnet system will become detached from the loudspeaker basket during operation of the loudspeaker.
  • the cone loudspeaker 10 shown in FIG. 1 is essentially formed by the magnet system 11, a conically shaped loudspeaker basket 12 made of plastic and a membrane 13.
  • the magnet system 11 is conventionally designed and consists of a circular pole plate 14, an annular permanent magnet 15, a likewise circular upper pole plate 16 and a round pole core 17 and connected.
  • the pole core 17 is connected to the lower pole plate 14 and is sheathed at a distance from the inner contours of the permanent magnet 15 and the upper pole plate 16 over its entire height.
  • the speaker basket 12 is placed with its basket base 18 on the side of the upper pole plate 16 facing away from the permanent magnet 15. How the upper pole plate 16 is connected to the loudspeaker basket 12 is explained in more detail below.
  • the conical membrane 13 is inserted into the speaker basket 12, wherein the larger diameter of the membrane 13 is connected to the upper edge of the speaker basket 12.
  • Connected to the other end of the membrane 13 is the tubular voice coil support 19, the free end of which is coated with the voice coil 20.
  • the overall length of the voice coil bobbin 19 is dimensioned such that its free end in the rest position of the loudspeaker projects into the distance formed by the pole core 17 on one side and by the upper pole plate 16 and the permanent magnet 15 on the other side.
  • the basket base 18 is connected to the outer jacket of the voice coil bobbin 19 by means of an accordion-shaped centering membrane 21.
  • a dust protection cap 22 is glued to the inner contour of the membrane 13.
  • the upper pole plate 16 has upstanding pins 23 on the surface facing away from the permanent magnet 15. These pins 23 are inserted into corresponding openings 24 in the basket base 18 when the basket base 18 is placed on the upper pole plate 16. These pins 23 and the openings 24 have no fastening function, but only serve to fix the position of the speaker basket 12 on the upper pole plate 16.
  • the speaker basket 12 and the magnet system 11 are connected as follows:
  • a circumferential edge 25 is formed on the surface of the basket base 18 which faces the magnet system, the inside diameter of which slightly exceeds the outside diameter of the upper pole plate and the height of which projects below the thickness of the upper pole plate 16.
  • This edge 25 is in two by a plurality of slots 26 guided parallel to the loudspeaker center axis Types of segments 27.1 and 27.2 divided. Every second segment 27.2 is designed as a latching hook 28. For this purpose, the free end region of these segments 27.2 is provided with a sawtooth-shaped configuration directed towards the loudspeaker center axis.
  • the areas of the saw teeth running at right angles to the loudspeaker center axis engage in projections 29 of the magnet system 11 and press the magnet system 11 with the upper pole plate 16 lightly against the basket base 18 of the loudspeaker basket 12.
  • the projections 29 are realized in this embodiment in that the upper pole plate 16 has an enlarged outer diameter compared to the permanent magnet 15.
  • This structural design of the upper pole plate 16 in comparison to the permanent magnet 15 means that there is no need for separate projections 29 on the outer jacket of the magnet system 11.
  • the assembly of the loudspeaker basket 12 and the magnet system 11 is greatly simplified by the inventive design of the loudspeaker basket 12.
  • the segments 27.2 which are designed as latching hooks 28, initially deflect in the direction of arrow P1 of the projecting upper pole plate 16 and then when the loudspeaker basket 12 reaches its end position on the magnet system 11 has found, grip the upper pole plate 16 and press against the basket base 18.
  • a clamp 30 is placed around the outer jacket of all segments 27.1, 27.2, which presses the segments 27.1, 27.2 against the outer jacket of the magnet system 11.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP92117391A 1991-10-19 1992-10-12 Konuslautsprecher Expired - Lifetime EP0538702B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9113037U 1991-10-19
DE9113037U DE9113037U1 (de) 1991-10-19 1991-10-19 Konuslautsprecher

Publications (3)

Publication Number Publication Date
EP0538702A2 EP0538702A2 (de) 1993-04-28
EP0538702A3 EP0538702A3 (enrdf_load_stackoverflow) 1994-04-13
EP0538702B1 true EP0538702B1 (de) 1996-09-04

Family

ID=6872423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117391A Expired - Lifetime EP0538702B1 (de) 1991-10-19 1992-10-12 Konuslautsprecher

Country Status (5)

Country Link
US (1) US5243151A (enrdf_load_stackoverflow)
EP (1) EP0538702B1 (enrdf_load_stackoverflow)
JP (1) JPH05252591A (enrdf_load_stackoverflow)
DE (2) DE9113037U1 (enrdf_load_stackoverflow)
DK (1) DK0538702T3 (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD346878S (en) * 1991-03-25 1994-05-10 Philip Morris Incorporated Electrical cigarette
DE9113037U1 (de) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim Konuslautsprecher
JP3177758B2 (ja) * 1993-04-07 2001-06-18 ミネベア株式会社 スピーカおよびその製造方法
JP3011829B2 (ja) * 1993-06-30 2000-02-21 株式会社ケンウッド スピーカの製造方法及び製造装置
US5566242A (en) * 1994-08-02 1996-10-15 Velodyne Acoustics, Inc. Mechanism for a speaker assembly
US5687247A (en) * 1995-07-13 1997-11-11 Proni; Lucio Surround for a loudspeaker
DE19732185A1 (de) * 1997-07-26 1999-01-28 Nokia Deutschland Gmbh Lautsprecherkorb
JP3416815B2 (ja) * 2000-02-17 2003-06-16 ミネベア株式会社 スピーカおよびその製造方法
JP2001359189A (ja) * 2000-06-16 2001-12-26 Onkyo Corp 分別スピーカ
JP2003061188A (ja) * 2001-08-10 2003-02-28 Minebea Co Ltd スピーカおよびその製造方法
JP2003289596A (ja) * 2002-03-27 2003-10-10 Citizen Electronics Co Ltd スピーカ及びその製造方法
JP4408731B2 (ja) * 2004-03-23 2010-02-03 パイオニア株式会社 スピーカ
JP2005277866A (ja) * 2004-03-25 2005-10-06 Pioneer Electronic Corp 樹脂フレーム、スピーカーユニット及びスピーカー装置
DE202014001433U1 (de) * 2014-02-19 2015-02-20 Harman Becker Automotive Systems Gmbh Lautsprecher
DE202014003034U1 (de) * 2014-04-02 2015-04-07 Harman Becker Automotive Systems Gmbh Lautsprecher
KR102361288B1 (ko) 2015-03-13 2022-02-10 삼성전자주식회사 스피커 장치
USD884683S1 (en) * 2019-01-02 2020-05-19 Alpine Electronics, Inc. Speaker driver frame

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5853299A (ja) * 1981-09-25 1983-03-29 Seiko Instr & Electronics Ltd 動電形スピ−カ
US4387788A (en) * 1982-01-21 1983-06-14 Lectron Products, Inc. Diaphragm pressure ring for tone generators
AU580794B2 (en) * 1984-09-03 1989-02-02 Sanden Corporation Dynamic transducer device
ATE69348T1 (de) * 1985-04-11 1991-11-15 Telefunken Fernseh & Rundfunk Lautsprechereinheit.
DE3804542C2 (de) * 1988-02-13 1995-04-06 Nokia Deutschland Gmbh Lautsprecheranschluß mit Zugentlastung
JPH02260799A (ja) * 1989-03-30 1990-10-23 Pioneer Electron Corp スピーカおよびその製造方法
DE9113037U1 (de) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) GmbH, 7530 Pforzheim Konuslautsprecher

Also Published As

Publication number Publication date
US5243151A (en) 1993-09-07
JPH05252591A (ja) 1993-09-28
DE59207044D1 (de) 1996-10-10
EP0538702A2 (de) 1993-04-28
DK0538702T3 (da) 1996-11-25
DE9113037U1 (de) 1992-01-09
EP0538702A3 (enrdf_load_stackoverflow) 1994-04-13

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