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DE102005020746B4 - magnet system - Google Patents

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Publication number
DE102005020746B4
DE102005020746B4 DE200510020746 DE102005020746A DE102005020746B4 DE 102005020746 B4 DE102005020746 B4 DE 102005020746B4 DE 200510020746 DE200510020746 DE 200510020746 DE 102005020746 A DE102005020746 A DE 102005020746A DE 102005020746 B4 DE102005020746 B4 DE 102005020746B4
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DE
Germany
Prior art keywords
magnets
pole plates
membrane
magnetic system
magnet
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 - Fee Related
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DE200510020746
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German (de)
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DE102005020746A1 (en
Inventor
Raimund Mundorf
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Individual
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Priority to DE200510020746 priority Critical patent/DE102005020746B4/en
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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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
    • H01F1/047—Alloys characterised by their composition
    • H01F1/053—Alloys characterised by their composition containing rare earth metals
    • H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
    • H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0273—Magnetic circuits with PM for magnetic field generation
    • H01F7/0289—Transducers, loudspeakers, moving coil arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles

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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)

Abstract

Magnetsystem zur Erzeugung von Schallwellen mit mindestens zwei Magneten (5 und 6) zur Erzeugung eines Magnetfeldes und einer zwischen zwei Polplatten (7 und 8) und den Magneten (5 und 6) angeordneten Membran (9), wobei das von den Magneten (5 und 6) erzeugte Magnetfeld so ausgebildet ist, dass das Magnetfeld im wesentlichen senkrecht zu den auf der Membran (9) aufgebrachten Leiterbahnen steht, dadurch gekennzeichnet, dass der Luftspalt durch die zwei Polplatten (7 und 8) und seitlich angeordnete Magnete (5 und 6) begrenzt ist, dass die zwei Polplatten (7 und 8) bogenförmig und gleichsinnig gebogen ausgebildet sind und einen bogenförmigen Luftspalt begrenzen, so dass eine kreisförmige und/oder zylinderförmige Schallwelle erzeugbar ist.Magnetic system for generating sound waves comprising at least two magnets (5 and 6) for generating a magnetic field and a membrane (9) arranged between two pole plates (7 and 8) and the magnets (5 and 6), the magnet (5 and 6) being arranged in such a way 6) is formed so that the magnetic field is substantially perpendicular to the on the membrane (9) applied conductor tracks, characterized in that the air gap through the two pole plates (7 and 8) and laterally arranged magnets (5 and 6) is limited, that the two pole plates (7 and 8) are curved and curved in the same direction and define an arcuate air gap, so that a circular and / or cylindrical sound wave can be generated.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft ein Magnetsystem nach den Merkmalen des Oberbegriffes des Patentanspruches 1.The The invention relates to a magnet system according to the features of the preamble of claim 1.

Bisherige-flache-Konstruktionen weisen die Eigenschaft auf, zu höheren Frequenzen hin den Schall zu bündeln. Dieses Verhalten ist allen Flächenstrahlern mit ebenen Membranen gemeinsam. Der Bündelungseffekt tritt in Abhängigkeit von der Membranbreite ab einer bestimmten Frequenz auf.Previous-flat constructions have the property to higher Frequencies towards the sound bundle. This behavior is all surface radiators common with flat membranes. The bundling effect is dependent of the membrane width from a certain frequency on.

Fundstellen der bisher erteilten oder veröffentlichen Patenten zu diesem Thema Membran sind:

  • 4.056.697 USA 1977
  • 4.039.044 USA 1977
  • 4.107.479 USA 1978
  • 4.354.066 USA 1982
  • 5.325.439 USA 1994, und
  • DE 2003950 A .
References to the patents issued or published so far on this subject membrane are:
  • 4056697 USA 1977
  • 4039044 USA 1977
  • 4107479 USA 1978
  • 4354066 USA 1982
  • 5325439 USA 1994, and
  • DE 2003950 A ,

In vielen Fällen ist dieser Bündelungseffekt unerwünscht. Diese zuvor genannte Problematik ist nun durch die Merkmale des Kennzeichnungsteils des Patentanspruches 1 gelöst. Das erfindungsgemäße Magnetsystem behebt diesen Mangel dadurch, dass es auch für hohe Frequenzen kreisförmige Wellenfronten erzeugt. Je nach gewählter Ausführung lässt sich der Öffnungswinkel der Schallwelle dem Bedarfsfall anpassen.In many cases this bundling effect is undesirable. These The aforementioned problem is now due to the features of the characterizing part of Claim 1 solved. The magnet system according to the invention fixes this defect by providing circular wavefronts even for high frequencies generated. Depending on the selected execution let yourself the opening angle adjust the sound wave to the case of need.

Das erfindungsgemäße Magnetsystem und Treiber ist für folgende Einsatzgebiete gedacht: Der Hifi- und High-End-Bereich, Car Hifi-Bereich und der professionelle Beschallungsbereich.The Magnetic system according to the invention and driver is for the following areas of application: the hi-fi and high-end sector, Car hi-fi area and the professional PA area.

Ausführungsbeispiel:Embodiment:

In den Zeichnungen ist ein erfindungsgemäßes Ausführungsbeispiel sowie eine abgewandelte Umsetzung dieses Prinzips schematisch dargestellt und mit dem Stand der Technik verglichen.In The drawings is an inventive embodiment and a modified implementation this principle is shown schematically and with the prior art compared.

1: Ein herkömmlicher, nach dem Air-Motion-Prinzip arbeitender, Treiber 1 erzeugt ab einer bestimmten Frequenz (U2 kleiner als Membranbreite) eine ebene Wellenfront 2. 1 : A conventional, air-motion-based driver 1 generates a plane wavefront from a certain frequency (U2 smaller than membrane width) 2 ,

2: Der erfindungsgemäße Treiber erzeugt für alle Frequenzen den Abschnitt einer kreisförmigen Welle. Der Öffnungswinkel ist abhängig vom durch den Treiber gebildeten Kreisbogen. 2 The driver according to the invention generates the section of a circular wave for all frequencies. The opening angle depends on the arc formed by the driver.

3: Der erfindungsgemäße Treiber in der Draufsicht. Die Membran 9 befindet sich zwischen den Polplatten 7 und 8. Diese leiten das von den Magneten 5 und 6 erzeugte Magnetfeld so um, dass das Magnetfeld senkrecht zu den auf der Membran aufgebrachten Leiterbahnen steht. 3 : The driver according to the invention in plan view. The membrane 9 is located between the pole plates 7 and 8th , These guide that from the magnets 5 and 6 generated magnetic field so that the magnetic field is perpendicular to the printed conductors applied to the membrane.

4: Der erfindungsgemäße Treiber in der Vorderansicht. 4 : The driver according to the invention in front view.

5: Eine Variante des erfindungsgemäßen Treibers in der Draufsicht. Der kreisbogenförmige Verlauf des Magnetsystems 10 wird durch zwei oder mehr gerade Segmente näherungsweise nachgebildet. 5 : A variant of the driver according to the invention in plan view. The arcuate course of the magnet system 10 is approximated by two or more straight segments.

6: Zeigt die aus dem Treiber 11 hervorgehenden Wellenfronten 12. 6 : Shows the from the driver 11 emergent wavefronts 12 ,

Claims (8)

Magnetsystem zur Erzeugung von Schallwellen mit mindestens zwei Magneten (5 und 6) zur Erzeugung eines Magnetfeldes und einer zwischen zwei Polplatten (7 und 8) und den Magneten (5 und 6) angeordneten Membran (9), wobei das von den Magneten (5 und 6) erzeugte Magnetfeld so ausgebildet ist, dass das Magnetfeld im wesentlichen senkrecht zu den auf der Membran (9) aufgebrachten Leiterbahnen steht, dadurch gekennzeichnet, dass der Luftspalt durch die zwei Polplatten (7 und 8) und seitlich angeordnete Magnete (5 und 6) begrenzt ist, dass die zwei Polplatten (7 und 8) bogenförmig und gleichsinnig gebogen ausgebildet sind und einen bogenförmigen Luftspalt begrenzen, so dass eine kreisförmige und/oder zylinderförmige Schallwelle erzeugbar ist.Magnetic system for generating sound waves with at least two magnets ( 5 and 6 ) for generating a magnetic field and between two pole plates ( 7 and 8th ) and the magnet ( 5 and 6 ) arranged membrane ( 9 ), whereas that of the magnets ( 5 and 6 ) is formed so that the magnetic field is substantially perpendicular to that on the membrane ( 9 ) is applied, characterized in that the air gap through the two pole plates ( 7 and 8th ) and laterally arranged magnets ( 5 and 6 ) is limited, that the two pole plates ( 7 and 8th ) arcuate and in the same direction bent and define an arcuate air gap, so that a circular and / or cylindrical sound wave can be generated. Magnetsystem nach Anspruch 1, dadurch gekennzeichnet, dass der bogenförmige Luftspalt durch mehrere gerade verlaufende Polplatten nachgebildet ist.Magnet system according to claim 1, characterized that the arcuate Air gap is modeled by several straight pole plates. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Magnete (5 und 6) als zwei gleichgepolte (N + S) Stabmagnete ausgebildet sind und die Membran (9) wellenförmig ausgebildet und mit einer mäanderförmigen Leiterbahn versehen ist.Magnet system according to one or more of the preceding claims, characterized in that the magnets ( 5 and 6 ) are formed as two equal-poled (N + S) bar magnets and the membrane ( 9 ) is wave-shaped and provided with a meander-shaped conductor track. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Front-/Montageplatte vorgesehen ist.Magnetic system according to one or more of the preceding Claims, characterized in that a front / mounting plate provided is. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Magnetsystem beidseitig offen ist und dadurch zu beiden Seiten Schall abstrahlt.Magnetic system according to one or more of the preceding Claims, characterized in that the magnet system is open on both sides and thereby emits sound on both sides. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Magnetsystem ein rückseitiges, geschlossenes Gehäuse aufweist.Magnetic system according to one or more of the preceding Claims, characterized in that the magnet system is a back, closed housing having. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Magnete (5 und 6) aus beschichtetem bzw. oberflächenbehandelten oder unlackiertem bzw. lackiertem Neodym-Eisen, Neodym-Eisen-Bor, Seltende-Erden-Cobalt (SmCo5 oder Sm2Co17), Samarium-Cobalt oder Hartferriten hergestellt sind.Magnetic system according to one or more of preceding claims, characterized in that the magnets ( 5 and 6 ) made of coated or unpainted neodymium iron, neodymium iron boron, rare earth earth cobalt (SmCo5 or Sm2Co17), samarium cobalt or hard ferrite. Magnetsystem nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Schallvorzugsrichtung sowohl konkav als auch konvex ausgeformt sein kann.Magnetic system according to one or more of the preceding Claims, characterized in that the sound preferred direction both concave may also be convex.
DE200510020746 2005-05-02 2005-05-02 magnet system Expired - Fee Related DE102005020746B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007062424B4 (en) * 2007-12-20 2010-02-04 Mundorf Eb Gmbh Magnetic drive device for a sound transducer or loudspeaker arrangement with at least one AMT loudspeaker unit

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003950A1 (en) * 1969-02-19 1970-09-10 Oskar Heil Acoustic converter
US4039044A (en) * 1974-11-25 1977-08-02 Oskar Heil Low frequency electro-acoustic transducer with interconnected diaphragms interleaved with fixed diaphragms
US4056697A (en) * 1976-09-03 1977-11-01 Oskar Heil Movable diaphragm connector method flexible hinge diaphragm surround and electro-acoustic transducer with folded diaphragm with intermediate flexible portions
US4107479A (en) * 1976-09-03 1978-08-15 Oskar Heil Electro-acoustic transducer
US4354066A (en) * 1980-09-15 1982-10-12 Necoechea Robert W Rigid-diaphragm transducer with plural coils
US5325439A (en) * 1993-10-13 1994-06-28 Smiley Jack R Loudspeaker apparatus
DE20207154U1 (en) * 2002-05-07 2002-09-19 Gerkinsmeyer, Norman, 89231 Neu-Ulm Magnet system and driver

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2003950A1 (en) * 1969-02-19 1970-09-10 Oskar Heil Acoustic converter
US4039044A (en) * 1974-11-25 1977-08-02 Oskar Heil Low frequency electro-acoustic transducer with interconnected diaphragms interleaved with fixed diaphragms
US4056697A (en) * 1976-09-03 1977-11-01 Oskar Heil Movable diaphragm connector method flexible hinge diaphragm surround and electro-acoustic transducer with folded diaphragm with intermediate flexible portions
US4107479A (en) * 1976-09-03 1978-08-15 Oskar Heil Electro-acoustic transducer
US4354066A (en) * 1980-09-15 1982-10-12 Necoechea Robert W Rigid-diaphragm transducer with plural coils
US5325439A (en) * 1993-10-13 1994-06-28 Smiley Jack R Loudspeaker apparatus
DE20207154U1 (en) * 2002-05-07 2002-09-19 Gerkinsmeyer, Norman, 89231 Neu-Ulm Magnet system and driver

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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee