DE612120C - Electrical apparatus, in particular telecommunication device, with a capsule serving as a membrane - Google Patents
Electrical apparatus, in particular telecommunication device, with a capsule serving as a membraneInfo
- Publication number
- DE612120C DE612120C DEL77163D DEL0077163D DE612120C DE 612120 C DE612120 C DE 612120C DE L77163 D DEL77163 D DE L77163D DE L0077163 D DEL0077163 D DE L0077163D DE 612120 C DE612120 C DE 612120C
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- capsule
- electrical apparatus
- shrink
- telecommunication device
- 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
Links
- 239000002775 capsule Substances 0.000 title claims description 21
- 239000012528 membrane Substances 0.000 title claims description 16
- 239000000463 material Substances 0.000 claims description 3
- 210000000867 larynx Anatomy 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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
- H04R7/24—Tensioning by means acting directly on free portions of diaphragm or cone
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Prostheses (AREA)
Description
Die Erfindung bezieht sich auf eine neuartige Verwendung der bekannten Schrumpfkapseln. Solche Schrumpfkapseln werden im aufgeweichten Zustande, in welchem sie plastisch sind, über den zu kapselnden Gegenstand gebracht und ziehen sich dann beim Trocknen derart zusammen, daß sie einen sicheren Abschluß des gekapselten Gegenstandes bewirken.The invention relates to a novel use of the known shrink capsules. Such shrink capsules are in the softened state in which they are plastic over the object to be encapsulated brought and then contract during drying in such a way that they provide a secure seal for the encapsulated object cause.
Solche Schrumpfkapseln sind besonders als Verschluß von Flaschen o. dgl. bekanntgeworden. Man hat auch bereits vorgeschlagen, Schrumpfkapseln als isolierende Schutzhülle für Spulen und Magnetkerne zu verwenden.Such shrink capsules are particularly known as closures for bottles or the like. It has also already been proposed to use shrink capsules as an insulating protective cover for coils and magnetic cores.
Die Erfindung erschließt ein weiteres Anwendungsgebiet für die Schrumpfkapsel dadurch, daß vorgeschlagen wird, eine Schrumpfkapsel als Membran für elektrische Apparate, insbesondere Fernmeldegeräte, zu verwenden.The invention opens up a further field of application for the shrink capsule in that that it is proposed to use a shrink capsule as a membrane for electrical equipment, especially telecommunication devices.
Es sei erwähnt, daß elektrische Apparate mit einer als Membran dienenden Kapsel aus Metall bekannt sind.It should be mentioned that electrical apparatus is made with a capsule serving as a membrane Metal are known.
Durch die Verwendung einer durch Schrumpfung von hygroskopischem Material entstandenen Kapsel (Schrumpfkapsel) als Membran wird die Herstellung des Apparates wesentlich vereinfacht, insbesondere kommt der Ziehvorgang für die Herstellung der Kapsel in Fortfall. Ferner wird das Gewicht des Apparates wesentlich vermindert und eine zuverlässigere Abdichtung gegen Feuchtigkeit und Staub und dabei gleichzeitig eine gute elektrische Isolierung erzielt.By using a material created by the shrinkage of hygroscopic material Capsule (shrink capsule) as a membrane, the manufacture of the apparatus becomes essential simplified, in particular the drawing process for the production of the capsule comes in Elimination. Furthermore, the weight of the apparatus is significantly reduced and it is more reliable Sealing against moisture and dust and at the same time a good electrical one Isolation achieved.
Ein Ausführungsbeispiel der Erfindung sei im folgenden an Hand der Abb. 1 und 2 beschrieben. Abb. ι zeigt einen Schnitt durch das Mikrophon. 1 ist die Schrumpfkapsel, die gleichzeitig als Membran dient. Die Kohlekörnermasse 2 des Mikrophons liegt zwischen der festen Elektrode 3 und der Kohlemembran 4 und ist durch einen Filzring 5 abgeschlossen. Über der Membran 4 liegt eine weitere Membran 6. Beide Membranen sind durch einen Ring 7 voneinander getrennt. Die Schrumpfkapsel 1 hält die einzelnen Teile miteinander zusammen und schließt zugleich die ganze Kapsel dicht ab. Infolge der Elastizität der Kapsel werden die Schwingungen durch diese ohne weiteres weitergegeben. Die Membran 6 könnte sogar vollständig fehlen. Die Membran 4 ist in der Abb, 2 für sich herausgezeichnet. Man erkennt, daß dieselbe vier Löcher aufweist, durch welche sich der Luftdruck vor und hinter der Membran 4 ausgleichen kann. Es hat sich gezeigt, daß durch die Anordnungen dieser Löcher die Empfindlichkeit des Mikrophons wesentlich erhöht wird.An exemplary embodiment of the invention is described below with reference to FIGS. 1 and 2. Fig. Ι shows a section through the microphone. 1 is the shrink capsule, which also serves as a membrane. The carbon grain mass 2 of the microphone lies between the fixed electrode 3 and the carbon membrane 4 and is closed off by a felt ring 5. Another membrane 6 lies above membrane 4. Both membranes are separated from one another by a ring 7. The shrink capsule 1 holds the individual parts together and at the same time seals the entire capsule tightly. Due to the elasticity of the capsule, the vibrations are easily passed on through it. The membrane 6 could even be completely absent. The membrane 4 is shown in Fig, 2 for itself. It can be seen that the same has four holes through which the air pressure in front of and behind the membrane 4 can equalize. It has been shown that the arrangement of these holes significantly increases the sensitivity of the microphone.
Von besonderem Vorteil ist die beschriebene Kapselung für Kehlkopfmikrophone, weil das Mikrophon durch die Kapsel eine saubere und fugenlose Außenhaut erhält.The described encapsulation for larynx microphones is particularly advantageous, because the capsule gives the microphone a clean and seamless outer skin.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL77163D DE612120C (en) | Electrical apparatus, in particular telecommunication device, with a capsule serving as a membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEL77163D DE612120C (en) | Electrical apparatus, in particular telecommunication device, with a capsule serving as a membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE612120C true DE612120C (en) | 1935-04-13 |
Family
ID=7284137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEL77163D Expired DE612120C (en) | Electrical apparatus, in particular telecommunication device, with a capsule serving as a membrane |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE612120C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE934896C (en) * | 1950-10-11 | 1955-11-10 | Int Standard Electric Corp | Electroacoustic converter |
| DE1242482B (en) * | 1966-04-28 | 1967-06-15 | Bosch Gmbh Robert | Electromagnetic horn, especially for motor vehicles |
-
0
- DE DEL77163D patent/DE612120C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE934896C (en) * | 1950-10-11 | 1955-11-10 | Int Standard Electric Corp | Electroacoustic converter |
| DE1242482B (en) * | 1966-04-28 | 1967-06-15 | Bosch Gmbh Robert | Electromagnetic horn, especially for motor vehicles |
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