DE1039759B - Sound absorbing protective cover for machines - Google Patents

Sound absorbing protective cover for machines

Info

Publication number
DE1039759B
DE1039759B DEL13713A DEL0013713A DE1039759B DE 1039759 B DE1039759 B DE 1039759B DE L13713 A DEL13713 A DE L13713A DE L0013713 A DEL0013713 A DE L0013713A DE 1039759 B DE1039759 B DE 1039759B
Authority
DE
Germany
Prior art keywords
protective cover
sound
absorbing protective
machines
layers
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.)
Pending
Application number
DEL13713A
Other languages
German (de)
Inventor
Dr-Ing Heinz Jordan
Dr Phil Nat Hellmuth Etzold
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DEL13713A priority Critical patent/DE1039759B/en
Publication of DE1039759B publication Critical patent/DE1039759B/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Description

Schalldämpfende Schutzhülle für Maschinen Die Erfindung bezieht sich auf eine schalldämpfende Schutzülle für 1Iaschinen. In dem Hauptpatent ist bereits eine schalldämpfende Schutzhülle für Maschinen, bestehend aus einer biegeweichen Haut, auf die zusätzliche blassen aufgebracht sind, vorgeschlagen worden. die dadurch gekennzeichnet ist, daß die Massen in voneinander unabhängige Plättchen unterteilt sind. Die biegeweichen Träger dieser Massen dienen einerseits zum Zusammenhalt und andererseits dazu, eine Hülle zu schaffen, die der wechselnden äußeren Gestalt des Strahlers angepaßt werden kann.Sound absorbing protective cover for machines The invention relates to on a sound-absorbing protective cover for machines. In the main patent is already a sound-absorbing protective cover for machines, consisting of a flexible one Skin with additional pale applied has been suggested. the thereby is characterized in that the masses are divided into independent platelets are. The pliable supports of these masses serve on the one hand for cohesion and on the other hand, to create a shell that conforms to the changing external shape of the Emitter can be adjusted.

Die Wirksamkeit einer schalldämpfenden Schutzhülle für Maschinen aus wenigstens einer biegeweichen Haut, in die nach Patent 967 519 voneinander unabhängige Massen eingebettet sind, die je nach dem zu entstörenden Frequenzbereich so abgeglichen sind, daß das Maximum der Dämpfung in diesem Gebiet liegt, läßt sich nach der Erfindung dadurch verbessern, daß diese Haut von Schichten unterschiedlicher Dichte und nach außen abnehmender Steifigkeit umgeben und mit ihnen verbunden ist.The effectiveness of a sound-absorbing protective cover for machines at least one pliable skin, in which, according to patent 967 519, are independent of one another Masses are embedded, which are adjusted according to the frequency range to be suppressed are that the maximum attenuation is in this area, can be according to the invention by improving this skin by layers of different densities and gradually outside of decreasing stiffness surrounded and connected to them.

In zweckmäßiger Weiterbildung der Erfindung ist es besonders vorteilhaft, wenn mehrere Häute abwechselnd mit weniger steifen Schichten in Fortpflanzungsrichtung des Schalles hintereinander vorgesehen sind.In an expedient development of the invention, it is particularly advantageous when several skins alternate with less stiff layers in the direction of propagation of the sound are provided one behind the other.

Ein Ausführungsbeispiel für den Aufbau einer derartigen Schicht ist in der Zeichnung Fig. 1 schematisch dargestellt. Die Hülle besteht aus einer mittleren Schicht 1, die in verteilter Form Massekörper, z. B. Bleiplättchen, Schrotkörner od. dgl., enthält. Zur Einbettung dieser Massekörper wird z. B. eine Schicht aus verhältnismäßig festem und tragfähigem Gummi verwendet. Zu beiden Seiten sind weitere Schichten 2 aus weicherem Gummi angebracht und zweckmäßig durch Vulkanisieren verbunden. Links und rechts hiervon sind weitere Schichten 3 aus noch weicherem, gegebenenfalls auch porösem Gummi, Schaumgummi. Kunststoffen od. dgl. vorhanden. Falls erforderlich, können der so aufgebauten Hülle weitere Schichten immer größerer Elastizität zugefügt werden.An exemplary embodiment for the construction of such a layer is in the drawing Fig. 1 is shown schematically. The shell consists of a middle one Layer 1, the mass body, z. B. lead flakes, shot pellets or the like. Contains. To embed this mass body z. B. a layer relatively strong and stable rubber used. There are others on either side Layers 2 of softer rubber attached and suitably connected by vulcanization. To the left and right of this are further layers 3 made of even softer, if necessary also porous rubber, foam rubber. Plastics or the like. Available. If required, Further layers of ever greater elasticity can be added to the shell constructed in this way will.

Eine Hülle dieser Art hat einen Dichteverlauf über der Dickenrichtung d, wie sie in Fig. 2 schematisch dargestellt ist. Gegebenenfalls kann man nun eine Hülle aus mehreren Schichten der angegebenen Art so aufbauen, daß in der Hülle in einigem Abstand nebeneinanderliegend mehrere Schichten 1 mit daz-,vischenliegenden Schichten 2 und 3 vorhanden sind, so daß sich der in Fig. 3 dargestellte Verlauf ergibt.A shell of this type has a density profile over the thickness direction d, as shown schematically in FIG. If necessary, you can now do a Build shell from several layers of the specified type so that in the shell in Several layers 1 lying next to one another at a certain distance with adjacent, interposed layers Layers 2 and 3 are present, so that the course shown in Fig. 3 is results.

Schutzhüllen der angegebenen Art sind genügend steif, um gewölbte, selbsttragende Flächen zu bilden, z. B. beim Einbau in das Gehäuse elektrischer 1laschinen. Sie enthalten sowohl die notwendigen Massen als auch die federnden Schichten, welche die Rückstellkräfte ergeben, um die gewünschte Schalldämmung zu erhalten.Protective covers of the specified type are sufficiently rigid to accommodate curved, to form self-supporting surfaces, e.g. B. when installing in the housing electrical 1machines. They contain both the necessary masses and the resilient layers, which result in the restoring forces in order to obtain the desired sound insulation.

Claims (2)

PATENTANSPRÜCHE: 1. Schalldämpfende Schutzhülle für Maschinen aus wenigstens einer biegeweichen Haut, in die voneinander unabhängige Massen in Form von Plättchen eingebettet sind nach Patent 967519, wobei diese Massen je nach dein zu entstörenden Frequenzbereich so abgeglichen sind, daß das Maximum der Dämpfung in diesem Gebiet liegt, dadurch gekennzeichnet, daß diese Haut von Schichten unterschiedlicher Dichte und nach außen abnehmender Steifigkeit umgeben und mit ihnen verbunden ist. PATENT CLAIMS: 1. Sound-absorbing protective cover for machines made of at least one flexible skin, in which independent masses in the form of platelets are embedded according to patent 967519, these masses being adjusted depending on the frequency range to be suppressed so that the maximum damping in this area is, characterized in that this skin is surrounded by layers of different density and outwardly decreasing stiffness and is connected to them. 2. Schalldämpfende Schutzhülle nach Anspruch 1, dadurch gekennzeichnet, daß mehrere der mit eingebetteten unabhängigen 1-Iassenplättchen versehenen Häute abwechselnd mit weniger steifen Schichten in Fortpflanzungsrichtung des Schalles hintereinander vorgesehen sind. In Betracht gezogene Druckschriften: Deutsche Patentschriften \7r. 815 08-1, 600 692, 668539. 2. Sound-absorbing protective cover according to claim 1, characterized in that several of the skins provided with embedded independent 1-Iassenplättchen are provided alternately with less rigid layers in the direction of propagation of the sound one behind the other. Considered publications: Deutsche Patentschriften \ 7r. 815 08-1, 600 692, 668539.
DEL13713A 1952-10-27 1952-10-27 Sound absorbing protective cover for machines Pending DE1039759B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL13713A DE1039759B (en) 1952-10-27 1952-10-27 Sound absorbing protective cover for machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL13713A DE1039759B (en) 1952-10-27 1952-10-27 Sound absorbing protective cover for machines

Publications (1)

Publication Number Publication Date
DE1039759B true DE1039759B (en) 1958-09-25

Family

ID=7259589

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL13713A Pending DE1039759B (en) 1952-10-27 1952-10-27 Sound absorbing protective cover for machines

Country Status (1)

Country Link
DE (1) DE1039759B (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094284B (en) * 1958-12-18 1960-12-08 Krauss Maffei Ag Sound-absorbing wall in superstructures of rail locomotives, especially diesel locomotives
DE1125466B (en) * 1958-12-18 1962-03-15 Krauss Maffei Ag Sound-reducing wall for superstructures of rail vehicles, especially for diesel locomotives
DE1253434B (en) * 1959-03-06 1967-11-02 Bolt Beranek & Newman Sound-absorbing, flat, in particular plate-shaped component
DE1484966B1 (en) * 1961-12-08 1973-08-16 Steve Sedlak FLEXIBLE PLATE
DE2930966A1 (en) * 1979-07-31 1981-02-12 Teroson Gmbh METHOD FOR PRODUCING A MOLDED PART AND A MOLDED PART HAVING A FOAM LAYER
US6766879B2 (en) * 2001-09-05 2004-07-27 Brett Eilers Sound reducing device for a coffee grinder and other kitchen appliances

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600692C (en) *
DE668539C (en) * 1933-10-10 1938-12-05 Waldemar Oelsner & Co Sound absorbing and sound absorbing component
DE815084C (en) * 1949-07-27 1951-09-27 Gruenzweig & Hartmann G M B H Soundproofing panel made of mineral wool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE600692C (en) *
DE668539C (en) * 1933-10-10 1938-12-05 Waldemar Oelsner & Co Sound absorbing and sound absorbing component
DE815084C (en) * 1949-07-27 1951-09-27 Gruenzweig & Hartmann G M B H Soundproofing panel made of mineral wool

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1094284B (en) * 1958-12-18 1960-12-08 Krauss Maffei Ag Sound-absorbing wall in superstructures of rail locomotives, especially diesel locomotives
DE1125466B (en) * 1958-12-18 1962-03-15 Krauss Maffei Ag Sound-reducing wall for superstructures of rail vehicles, especially for diesel locomotives
DE1253434B (en) * 1959-03-06 1967-11-02 Bolt Beranek & Newman Sound-absorbing, flat, in particular plate-shaped component
DE1484966B1 (en) * 1961-12-08 1973-08-16 Steve Sedlak FLEXIBLE PLATE
DE2930966A1 (en) * 1979-07-31 1981-02-12 Teroson Gmbh METHOD FOR PRODUCING A MOLDED PART AND A MOLDED PART HAVING A FOAM LAYER
US6766879B2 (en) * 2001-09-05 2004-07-27 Brett Eilers Sound reducing device for a coffee grinder and other kitchen appliances
US7481296B2 (en) * 2001-09-05 2009-01-27 Brett Eilers Sound reducing device for a coffee grinder and other kitchen appliances

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