DE1816745U - HARD FOAM MEMBRANE FOR SPEAKER. - Google Patents
HARD FOAM MEMBRANE FOR SPEAKER.Info
- Publication number
- DE1816745U DE1816745U DE1959ST011886 DEST011886U DE1816745U DE 1816745 U DE1816745 U DE 1816745U DE 1959ST011886 DE1959ST011886 DE 1959ST011886 DE ST011886 U DEST011886 U DE ST011886U DE 1816745 U DE1816745 U DE 1816745U
- Authority
- DE
- Germany
- Prior art keywords
- membrane
- hard foam
- speaker
- foam membrane
- membranes
- 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
- 239000012528 membrane Substances 0.000 title claims description 21
- 239000006260 foam Substances 0.000 title claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000004049 embossing Methods 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 229920006255 plastic film Polymers 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002984 plastic foam Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
Description
Die Membrane muss einerseits sehr leicht sein, um die Einschwingvorgänge recht klein zu halten, andererseits muss die Membrane aber eine so hohe innere Steifigkeit haben, dass unerwünschte Teilschwingungen der Membrane, die Anlass zur Bildung von Harmonischen bzw. Subharmonischen einzelner Frequenzen sein können, auf ein Minimum herabgedrückt werden.On the one hand, the membrane must be very light in order to cope with the transient processes to be kept quite small, but on the other hand the membrane must have such a high internal stiffness have that unwanted partial vibrations of the membrane that give rise to the formation of Harmonics or subharmonics of individual frequencies can be to a minimum be depressed.
Die gebräuchlichen Membranen werden vorzugsweise im Fasergussverfahren hergestellt und erreichen dabei eine in den meisten Fällen ausreichende Qualität und Festigkeit. Es sind auch Membranen bekannt, bei denen auf einem segmentartig zusammengesetzten Aluminiumträger in einer festen Form eine Hartschaumschicht aufgeschäumt wird. Diese Membranen haben durch ihren netzartig vermaschten Aufbau des erhärteten Kunststoffschaumes eine hohe Steifigkeit und dadurch auch geringe störende Teilschwingungen.The common membranes are preferably made using the fiber casting process and in most cases achieve a sufficient quality and strength. There are also membranes known in which on a segment-like composite aluminum carrier foamed a rigid foam layer in a solid form will. Due to their mesh-like structure, these membranes have hardened Plastic foam has a high rigidity and therefore also low disruptive partial vibrations.
An die Membranenbasis solcher Hartschaum-Membranen wird eine kreisförmig angeordnete Rillenpartie geklebt, die den zentrischen Sitz der Membranen im Lautsprecher gewährleistet und eine freie Beweglichkeit der Membrane in axialer Richtung sichert. Membranen, die nach dem beschriebenen Verfahren hergestellt werden, sind verhältnismässig teuer und zeitraubend in der Fertigung.A circular shape is attached to the membrane base of such rigid foam membranes arranged grooves glued, which the central seat of the membranes in the loudspeaker and ensures free mobility of the membrane in the axial direction. Membranes made by the method described are proportionate expensive and time consuming to manufacture.
Um diese Nachteile zu vermeiden, wird neuerungsgemäss vorgeschlagen,
dass auf einen aus Kunststoff-Folie bestehenden und im Tiefzieh-oder
Die Abbildung zeigt ein Ausführungsbeispiel der Neuerung. Der Träger 1 für die Hartschaumschicht besteht aus einer Kunststoff-Folie, und die Membranenform wird durch ein Tiefzieh-oder @rägeverfahren erhalten. Die Rillenpartie 2 wird in demselben Arbeitsar. mit hergestellt.The figure shows an embodiment of the innovation. The carrier 1 for the rigid foam layer consists of a plastic film, and the membrane shape is obtained by a deep-drawing or embossing process. The groove section 2 is in same job. made with.
Auf diesen Träger wird die Hartschaumschicht 3 aufgeschäumt.The hard foam layer 3 is foamed onto this carrier.
1 Schutzanspruch 1 Bl. Zeichng., 1 Fig.1 protection claim 1 sheet drawing, 1 Fig.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1959ST011886 DE1816745U (en) | 1959-12-08 | 1959-12-08 | HARD FOAM MEMBRANE FOR SPEAKER. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1959ST011886 DE1816745U (en) | 1959-12-08 | 1959-12-08 | HARD FOAM MEMBRANE FOR SPEAKER. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1816745U true DE1816745U (en) | 1960-08-18 |
Family
ID=32942926
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1959ST011886 Expired DE1816745U (en) | 1959-12-08 | 1959-12-08 | HARD FOAM MEMBRANE FOR SPEAKER. |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1816745U (en) |
-
1959
- 1959-12-08 DE DE1959ST011886 patent/DE1816745U/en not_active Expired
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