AT132343B - Dynamic loudspeaker with a horseshoe-shaped permanent magnet. - Google Patents

Dynamic loudspeaker with a horseshoe-shaped permanent magnet.

Info

Publication number
AT132343B
AT132343B AT132343DA AT132343B AT 132343 B AT132343 B AT 132343B AT 132343D A AT132343D A AT 132343DA AT 132343 B AT132343 B AT 132343B
Authority
AT
Austria
Prior art keywords
horseshoe
permanent magnet
magnet
dynamic loudspeaker
shaped permanent
Prior art date
Application number
Other languages
German (de)
Inventor
Richard Laufer
Original Assignee
Richard Laufer
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 Richard Laufer filed Critical Richard Laufer
Application granted granted Critical
Publication of AT132343B publication Critical patent/AT132343B/en

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Description

  

   <Desc/Clms Page number 1> 
 



  Dynamischer Lautsprecher mit hufeisenförmigem permanenten Magnet. 



   Die Erfindung betrifft einen dynamischen Lautsprecher, dessen permanenter Magnet ohne Pol- schuh hufeisenförmig ist, und sie besteht darin, dass der Transformator zwischen den Magnetschenkeln angeordnet ist, wodurch der Lautsprecher eine gedrängtere Form erhält und zu seiner Herstellung weniger
Material benötigt wird als bei den bekannten dynamischen Lautpsrechern dieser Art. 



   Ein weiteres Erfindungsmerkmal ist in der besonderen Form der Sehwingspulenbrücke gelegen, durch welche störende Eigenschwingungen der Membran vermieden werden. 



   In der Zeichnung ist der Erfindungsgegenstand beispielsweise veranschaulicht, u. zw. zeigt Fig. 1 den Lautsprecher im Vertikalschnitt, Fig. 2 denselben in Vorderansicht und Fig. 3 die   Schwingspulen-   brücke in Vorderansicht. 



   Wie aus Fig. 1 ersichtlich, ist als permanenter Magnet ein   Hufeisenmagnet J ohne Polschuh   vor- gesehen, dessen Schenkel, gemessen in der Richtung vom Polende zum Scheitel des Magneten, ziemlich lang, jedoch von verhältnismässig geringer Dicke sind. Zwischen den Magnetschenkeln ist der Transformator 2 eingebaut, welcher durch seitliche Deckplatten 3 des Magneten 1 sowie durch eine die Polenden desselben   umschliessende     Sehutzkappe   4 vollständig eingekapselt ist. Der Luftspalt wird zwischen dem
Kern und dem einen Magnetschenkel gebildet. Der Magnet 1 trägt an seinem einen Schenkel seitlich die in bekannter Weise ausgebildete Fassung 5 der Membran 6 und vermittels der   Schwingspulenbrücke   7 die Membran 6 selbst.

   Die   Schwingspulenbrücke   7 weist an den Längsenden in der Mitte zwei nach innen springende kurze Arme 8 auf, die in Augen 9 endigen, mittels welcher die Brücke auf Distanzstücken 10 der Fassung 5 bzw. des Magneten   1   aufsitzt und durch Schrauben 11 an diesen befestigt ist. Bei dieser Ausbildung werden störende Schwingungen der Membran vermieden, weil die Arme 8 eine andere Schwin-   g1mgsweite   haben wie die langen Verbindungsteile 12 der Brücke 7 und daher die Schwingungen der Teile   8, 12   einander entgegenwirken. 



   PATENT-ANSPRÜCHE :
1. Dynamischer Lautsprecher mit hufeisenförmigem permanenten Magnet ohne Polschuh, dadurch gekennzeichnet, dass der Transformator zwischen den   Magnetschenkeln   angeordnet ist. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Dynamic loudspeaker with a horseshoe-shaped permanent magnet.



   The invention relates to a dynamic loudspeaker, the permanent magnet of which is horseshoe-shaped without a pole shoe, and it consists in that the transformer is arranged between the magnet legs, whereby the loudspeaker is given a more compact shape and less for its manufacture
Material is required than with the known dynamic loudspeakers of this type.



   Another feature of the invention is the special shape of the voice coil bridge, which avoids disruptive natural vibrations of the membrane.



   The subject matter of the invention is illustrated in the drawing, for example, Between FIG. 1 shows the loudspeaker in vertical section, FIG. 2 shows the same in a front view, and FIG. 3 shows the voice coil bridge in a front view.



   As can be seen from FIG. 1, a horseshoe magnet J without a pole shoe is provided as the permanent magnet, the legs of which, measured in the direction from the pole end to the apex of the magnet, are quite long, but of relatively small thickness. The transformer 2 is installed between the magnet legs and is completely encapsulated by the side cover plates 3 of the magnet 1 and by a protective cap 4 surrounding the pole ends of the magnet. The air gap is between the
Core and one magnetic leg formed. On its one leg, the magnet 1 carries laterally the socket 5 of the diaphragm 6, which is designed in a known manner, and the diaphragm 6 itself by means of the voice coil bridge 7.

   The voice coil bridge 7 has two inwardly jumping short arms 8 at the longitudinal ends in the middle, which end in eyes 9, by means of which the bridge sits on spacers 10 of the holder 5 or the magnet 1 and is fastened to them by screws 11. With this design, disturbing vibrations of the membrane are avoided because the arms 8 have a different vibration width than the long connecting parts 12 of the bridge 7 and therefore the vibrations of the parts 8, 12 counteract one another.



   PATENT CLAIMS:
1. Dynamic loudspeaker with a horseshoe-shaped permanent magnet without a pole piece, characterized in that the transformer is arranged between the magnet legs.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

2. Dynamischer Lautsprecher nach Anspruch 1, dadurch gekennzeichnet, dass die die Membran (6) tragende Sehwingspulenbrücke (7) an den Längsenden zwei kurze nach innen springende Arme (8) aufweist, mittels welcher die Schwingspulenbriieke an Distanzstücken (10) des Magneten aufsitzt, wodurch störende Eigensehwingungen der Membran vermieden werden, indem die Arme (8) eine andere Schwingungsweite haben wie die langen Verbindungsteile (12) der Brücke, so dass die Schwingungen der Teile (8, 12) einander entgegenwirken. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. 2. Dynamic loudspeaker according to claim 1, characterized in that the voice coil bridge (7) carrying the membrane (6) has two short inwardly jumping arms (8) at the longitudinal ends, by means of which the voice coil bridge sits on spacers (10) of the magnet, whereby disruptive natural vibrations of the membrane are avoided in that the arms (8) have a different oscillation range than the long connecting parts (12) of the bridge, so that the vibrations of the parts (8, 12) counteract each other. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT132343D 1932-03-31 1932-03-31 Dynamic loudspeaker with a horseshoe-shaped permanent magnet. AT132343B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT132343T 1932-03-31

Publications (1)

Publication Number Publication Date
AT132343B true AT132343B (en) 1933-03-10

Family

ID=3637362

Family Applications (1)

Application Number Title Priority Date Filing Date
AT132343D AT132343B (en) 1932-03-31 1932-03-31 Dynamic loudspeaker with a horseshoe-shaped permanent magnet.

Country Status (1)

Country Link
AT (1) AT132343B (en)

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