AT63874B - Sound box for speaking machines and other acoustic instruments. - Google Patents
Sound box for speaking machines and other acoustic instruments.Info
- Publication number
- AT63874B AT63874B AT63874DA AT63874B AT 63874 B AT63874 B AT 63874B AT 63874D A AT63874D A AT 63874DA AT 63874 B AT63874 B AT 63874B
- Authority
- AT
- Austria
- Prior art keywords
- membrane
- sound box
- acoustic instruments
- box according
- edges
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
- Casings For Electric Apparatus (AREA)
Description
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Damit sich die Membrane 2 wesentlich gleichförmig auf ihre volle Breite durchbiegt, ist sie mit einem wesentlich starren, flachen Steg 14 versehen, der in einer zur Membrane senkrechten Ebene aufwärtsreicht und in der Mitte zwischen den Rändern der Membrane, parallel zu ihnen angeordnet ist. Der Steg ist vorteilhaft aus Stahlblech hergesteltl und an seiner inneren Kante mit einem flachen schmalen Flansch 141 versehen, der mittels Nieten, die durch ihn und die Membrane hindurchreichen, an dieser befestigt ist. überdies kann zwischen dem Flansch und der Membrane eine Schicht Leim, Kitt oder dgl. aufgebracht sein. Die Breite des Steges nimmt vorteilhaft von dessen Mitte nach aussen ab und seine Aussenkante ist vorteilhaft von Ende zu Ende gekrümmt, wobei er über die volle Breite der Membrane reicht.
Der Nadelträger 3 ist an seinem inneren, abgeschwächten Ende mit dem Steg 14 und der Membrane 2 mittels eines metallstreifens 15 verbunden, der auf der Oberseite des Steges 14 aufliegt und mit demselben durch Lötung oder sonstwie verbunden ist.
Der Nadelträger 3 ist so angebracht, dass er in bezug auf das Gehäuse 1 in irgend einer geeigneten Weise schwingen kann.
Es ist klar, dass sich bei Betätigung dieser Schalldose die Membrane zwischen den zwei Paaren von Dichtungen entsprechend den Schwingungen des Nadelträgers durchbiegt, wobei sich die zurückgehaltenen Ränder der Membrane abwechselnd einander nähern und voneinander entfernen. Ebenso ist es klar, dass sich die Membrane hauptächlich längs der Linie des Stegen 14 und wesentlich gleichförmig über ihre ganze Breite durchbiegen wird.
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So that the membrane 2 bends substantially uniformly to its full width, it is provided with a substantially rigid, flat web 14 which extends upwards in a plane perpendicular to the membrane and is arranged in the middle between the edges of the membrane, parallel to them. The web is advantageously made of sheet steel and is provided on its inner edge with a flat, narrow flange 141 which is fastened to the latter by means of rivets which extend through it and the membrane. Furthermore, a layer of glue, putty or the like can be applied between the flange and the membrane. The width of the web advantageously decreases outwards from its center and its outer edge is advantageously curved from end to end, extending over the full width of the membrane.
The needle carrier 3 is connected at its inner, weakened end to the web 14 and the membrane 2 by means of a metal strip 15 which rests on the top of the web 14 and is connected to the same by soldering or otherwise.
The needle carrier 3 is mounted so that it can oscillate with respect to the housing 1 in any suitable manner.
It is clear that when this sound box is actuated, the membrane between the two pairs of seals flexes in accordance with the vibrations of the needle carrier, with the retained edges of the membrane alternately approaching and moving away from each other. It is also clear that the membrane will bend mainly along the line of the web 14 and substantially uniformly over its entire width.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR443172T | 1911-07-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT63874B true AT63874B (en) | 1914-03-10 |
Family
ID=1484274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT63874D AT63874B (en) | 1911-07-07 | 1912-07-03 | Sound box for speaking machines and other acoustic instruments. |
Country Status (4)
Country | Link |
---|---|
AT (1) | AT63874B (en) |
FR (1) | FR443172A (en) |
GB (1) | GB191215530A (en) |
NL (1) | NL553C (en) |
-
1911
- 1911-07-07 FR FR443172A patent/FR443172A/en not_active Expired
-
1912
- 1912-07-03 AT AT63874D patent/AT63874B/en active
- 1912-07-03 NL NL658A patent/NL553C/en active
- 1912-07-03 GB GB191215530D patent/GB191215530A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR443172A (en) | 1912-09-18 |
GB191215530A (en) | 1912-11-21 |
NL553C (en) | 1915-03-01 |
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