EP0538702A2 - Haut-parleur conique - Google Patents

Haut-parleur conique Download PDF

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Publication number
EP0538702A2
EP0538702A2 EP92117391A EP92117391A EP0538702A2 EP 0538702 A2 EP0538702 A2 EP 0538702A2 EP 92117391 A EP92117391 A EP 92117391A EP 92117391 A EP92117391 A EP 92117391A EP 0538702 A2 EP0538702 A2 EP 0538702A2
Authority
EP
European Patent Office
Prior art keywords
basket
magnet system
loudspeaker
base
pole plate
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
EP92117391A
Other languages
German (de)
English (en)
Other versions
EP0538702A3 (fr
EP0538702B1 (fr
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/fr
Publication of EP0538702A3 publication Critical patent/EP0538702A3/xx
Application granted granted Critical
Publication of EP0538702B1 publication Critical patent/EP0538702B1/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
    • 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

  • 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 formed from 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.
  • a transfer of the connection between the loudspeaker basket and the magnet system to loudspeaker baskets which are formed from plastic is not possible or only possible with considerable disadvantages. This is due to the fact that, on the one hand, the upper pole plate is to be pressed slightly against the basket base by means of the riveting and, on the other hand, the forces required for this on the rivet slug and the basket base during the riveting process are so high that the basket base breaks.
  • the invention is therefore based on the object of specifying a cone loudspeaker which avoids the disadvantages of the aforementioned loudspeakers and also firmly connects the magnet system to the loudspeaker basket in the case of large and heavy magnet systems.
  • 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 of conventional design and consists of a circular pole plate 14, a ring-shaped permanent magnet 15, a likewise ring-shaped upper pole plate 16 and a round pole core 17.
  • the two pole plates 14, 16 are arranged centered on the loudspeaker center axis on the two ring surfaces of the permanent magnet 15 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: On the surface of the basket base 18, which faces the magnet system, a peripheral edge 25 is formed, 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 locking 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 loudspeaker basket 12 If the loudspeaker basket 12 is placed on the upper pole plate 16, 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.
  • the loudspeaker 10 shown in FIG. 2 differs from the loudspeaker shown in FIG. 1 only in another way of fastening the magnet system 11 to the loudspeaker basket 12, so that the general structure of the loudspeaker will no longer be discussed in the context of the discussion of this exemplary embodiment needs.
  • the pot edge 36 is meandering, so that raised and less raised edge segments 37.1 and 37.2 are formed. If the speaker basket 12 is connected to the magnet system 11, the less upstanding edge segments 37.1 stand on the surface of the basket base 18 facing the magnet system 11. In this state, the more upstanding edge segments 37.2 are inserted through corresponding openings 38 in the basket base 18 and are widened in rivet head shape above the basket base 18 by ultrasonic welding, so that the underside of the rivet head 39 rests on the basket base 18.
  • tensile forces act, which are indicated by the force arrows P2. These forces are built up in that when the loudspeaker basket 12 and the magnet system 11 are connected, the curved cup base 32 receives a less pronounced curvature under the action of external forces. If the rivet heads 39 are created by ultrasonic welding and the external force on the pot base 32 is eliminated, the restoring force with which the pot base 32 tries to achieve its original curvature causes the build-up of the tensile forces P2 in the lateral surface 40. By continuing these forces P2 through the pot base 32 and the bead 33 on the lower pole plate 14, the magnet system 11 with its upper pole plate 16 is pressed against the side of the basket base 18 facing this pole plate 16.
  • the basket base 18 is provided on its surface facing the magnet system 11 with a centering ring 41 which closely borders the upper pole plate 16.
  • the figures in FIG. 2 do not show the contacting of the voice coil 20.

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 Haut-parleur conique Expired - Lifetime EP0538702B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=6872423

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117391A Expired - Lifetime EP0538702B1 (fr) 1991-10-19 1992-10-12 Haut-parleur conique

Country Status (5)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632676A1 (fr) * 1993-06-30 1995-01-04 Kabushiki Kaisha Kenwood Haut-parleur et procédé pour sa fabrication
EP0893936A2 (fr) * 1997-07-26 1999-01-27 NOKIA TECHNOLOGY GmbH Panier pour haut-parleur

Families Citing this family (15)

* 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 (fr) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) Gmbh, 7530 Pforzheim, De
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
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
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569929A1 (fr) * 1984-09-03 1986-03-07 Sanden Corp Transducteur dynamique tel que haut-parleur pour les frequences graves et les frequences aigues
EP0198359A2 (fr) * 1985-04-11 1986-10-22 TELEFUNKEN Fernseh und Rundfunk GmbH Unité de haut-parleur
DE3804542A1 (de) * 1988-02-13 1989-09-07 Graetz Nokia Gmbh Lautsprecheranschluss mit zugentlastung
DE9113037U1 (fr) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) Gmbh, 7530 Pforzheim, De

Family Cites Families (3)

* 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
JPH02260799A (ja) * 1989-03-30 1990-10-23 Pioneer Electron Corp スピーカおよびその製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569929A1 (fr) * 1984-09-03 1986-03-07 Sanden Corp Transducteur dynamique tel que haut-parleur pour les frequences graves et les frequences aigues
EP0198359A2 (fr) * 1985-04-11 1986-10-22 TELEFUNKEN Fernseh und Rundfunk GmbH Unité de haut-parleur
DE3804542A1 (de) * 1988-02-13 1989-09-07 Graetz Nokia Gmbh Lautsprecheranschluss mit zugentlastung
DE9113037U1 (fr) * 1991-10-19 1992-01-09 Nokia Unterhaltungselektronik (Deutschland) Gmbh, 7530 Pforzheim, De

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0632676A1 (fr) * 1993-06-30 1995-01-04 Kabushiki Kaisha Kenwood Haut-parleur et procédé pour sa fabrication
US5701657A (en) * 1993-06-30 1997-12-30 Kabushiki Kaisha Kenwood Method of manufacturing a repulsion magnetic circuit type loudspeaker
EP0893936A2 (fr) * 1997-07-26 1999-01-27 NOKIA TECHNOLOGY GmbH Panier pour haut-parleur
EP0893936A3 (fr) * 1997-07-26 2002-07-24 Harman Audio Electronic Systems GmbH Panier pour haut-parleur

Also Published As

Publication number Publication date
DE9113037U1 (fr) 1992-01-09
DE59207044D1 (de) 1996-10-10
DK0538702T3 (da) 1996-11-25
EP0538702A3 (fr) 1994-04-13
EP0538702B1 (fr) 1996-09-04
US5243151A (en) 1993-09-07
JPH05252591A (ja) 1993-09-28

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