DE538586C - Sound box for speaking machines - Google Patents

Sound box for speaking machines

Info

Publication number
DE538586C
DE538586C DEP61509D DEP0061509D DE538586C DE 538586 C DE538586 C DE 538586C DE P61509 D DEP61509 D DE P61509D DE P0061509 D DEP0061509 D DE P0061509D DE 538586 C DE538586 C DE 538586C
Authority
DE
Germany
Prior art keywords
sound box
sound
membrane
housing
machines
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
Application number
DEP61509D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
Publication date
Priority to DEP61509D priority Critical patent/DE538586C/en
Application granted granted Critical
Publication of DE538586C publication Critical patent/DE538586C/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Description

Schalldose für Sprechmäschinen Den Gegenstand der Erfindung bildet eine Schalldose für Sprechmaschinen, bei welcher zwischen der Dosenrückwand und der Membran eine Schallblende eingebaut ist, die in der Mitte eine Austrittsöffnung für die Schallwellen hat. Derartige Schalldosen sind bereits bekannt.Sound box for speech machines forms the subject of the invention a sound box for speaking machines, in which between the back wall of the box and A sound screen is built into the diaphragm with an outlet opening in the middle for the sound waves. Such sound boxes are already known.

Das Neue und Wesentliche beruht gemäß der Erfindung darin, daß die Schallblende zwischen. der Dosenrückwand und der Membran sowohl von der Membran wie von dem Gehäuse mittels einer oder mehrerer Scheiben isoliert ist. Gegebenenfalls können diese Scheiben mit Versteifungsrippen versehen sein. Diese Scheiben haben Rohransätze, von welchen die Schallwellen ohne Berührung des Dosengehäuses abgeleitet werden können. Durch diese Ausbildung wird erreicht, daß die akustischenSchwingungen von dem Schalldosengehäuse getrennt sind, wodurch die Tonwiedergabe verbessert wird.According to the invention, the new and essential thing is that the Sound screen between. the back wall of the can and the membrane both from the membrane as is isolated from the housing by means of one or more discs. Possibly these discs can be provided with stiffening ribs. Have these disks Pipe sockets from which the sound waves are derived without touching the can body can be. This design ensures that the acoustic vibrations are separated from the sound box body, whereby the sound reproduction is improved.

Die Zeichnung zeigt Ausführungsbeispiele des Gegenstandes der Erfindung, und zwar: Abb. i einen senkrechten Mittelschnitt durch die innere Schalldose und Abb. a eine veränderte Ausführungsform in gleicher Darstellung.The drawing shows exemplary embodiments of the subject matter of the invention, namely: Fig. i a vertical middle section through the inner sound box and Fig. A a modified embodiment in the same representation.

In Abb. i ist die Membran i in dem Gehäuse 3 der Schalldose federnd, vorteilhaft mittels eines aufgeschlitzten Gummiringes z, gelagert. Zwischen der Membran i und der Rückseite .4 des Schalldosengehäuses 3 liegt die isolierte Blende 5, welche in gleicher Weise befestigt -ist wie die Membran i. Diese Blende 5 hat in der Mitte eine öffnung. Auf dieser Blende 5 liegt eine Isolierscheibe 6, welche gegebenenfalls mit Rillen oder Rippen 7 versehen sein kann. Die Scheibe 6 hat einen Rohransatz 8 in der Mitte, welcher der Mittelöffnung in der Blende 5 entspricht und zu dem nicht dargestellten Tonarm führt.In Fig. I the membrane i is resilient in the housing 3 of the sound box, advantageously by means of a slit rubber ring z, stored. Between the Membrane i and the back .4 of the sound box housing 3 is the insulated screen 5, which is attached in the same way as the membrane i. This aperture has 5 an opening in the middle. On this cover 5 is an insulating disk 6, which may optionally be provided with grooves or ribs 7. The disc 6 has one Pipe socket 8 in the middle, which corresponds to the central opening in the diaphragm 5 and leads to the tonearm, not shown.

In Abb. z ist die Scheibe 6 tellerförmig ausgebildet und in derselben Gummilagerung z zusammen mit der Membran i gelagert. Die Blende 5 ist an der Scheibe 6 befestigt, ohne direkt mit dem Gehäuse 3 in Verbindung zu stehen. Aus der Darstellung ergibt sich, daß die akustischen Schwingungen, welche durch die Bewegung der Membran i hervorgerufen werden, vollständig von dem Schalldosengehäuse getrennt sind und infolgedessen die Schalldose 3 selbst nicht zum Mitschwingen bringen können. Die Schwirgungen werden vollständig durch die Blende 5 und die aufgelagerte Isolierscheibe 6 abgefangen und treten in den Tonarm durch den Rohransatz8 ein, ohne das Schalldosengehäuse zu berühren.In Fig. Z, the disc 6 is plate-shaped and in the same Rubber bearing z stored together with the membrane i. The aperture 5 is on the disc 6 attached without being directly connected to the housing 3. From the representation it follows that the acoustic vibrations caused by the movement of the membrane i are completely separated from the sound box housing and as a result, the sound box 3 itself cannot resonate. the Oscillations are completely eliminated by the cover 5 and the insulating washer on top 6 are intercepted and enter the tonearm through the socket 8 without the sound box housing to touch.

Claims (1)

PATENTANSPRUCH: Schalldose für Sprechmaschinen mit zwischen ihrer Rückwand und der Membran vorgesehener, in der Mitte eine Austrittsöffnung für die Schallwellen aufweisender Schallblende, dadurch gekennzeichnet, daß die sowohl von der Membran (i) wie vom Gehäuse "(3) isolierte Blende (5) mit einer oder mehreren Scheiben (6), die gegebenenfalls mit Versteifungsrippen (7) versehen sind, fest verbunden ist, und daß diese Scheiben (6) Rohransätze (8) haben, mittels deren sie gegenseitig isoliert ineinandergeschachtelt sind.PATENT CLAIM: Sound box for speaking machines with a sound screen provided between its rear wall and the membrane and having an exit opening in the middle for the sound waves, characterized in that the screen (5) isolated from both the membrane (i) and the housing "(3) with one or more disks (6), which are optionally provided with stiffening ribs (7) , is firmly connected, and that these disks (6) have tube attachments (8) by means of which they are mutually insulated and nested.
DEP61509D Sound box for speaking machines Expired DE538586C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP61509D DE538586C (en) Sound box for speaking machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP61509D DE538586C (en) Sound box for speaking machines

Publications (1)

Publication Number Publication Date
DE538586C true DE538586C (en) 1931-11-14

Family

ID=7389727

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP61509D Expired DE538586C (en) Sound box for speaking machines

Country Status (1)

Country Link
DE (1) DE538586C (en)

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