EP1232309A1

EP1232309A1 - Soundproofing element and soundproofing wall

Info

Publication number: EP1232309A1
Application number: EP00985091A
Authority: EP
Inventors: Peter Wisniewski
Original assignee: Calenberg Ingenieure planmassig elastisch lagern GmbH
Current assignee: Calenberg Ingenieure planmassig elastisch lagern GmbH
Priority date: 1999-11-25
Filing date: 2000-11-24
Publication date: 2002-08-21
Anticipated expiration: 2020-11-24
Also published as: KR100763076B1; WO2001038643A1; AU2162401A; DE50013475D1; BR0015827A; HUP0203776A2; ATE339555T1; PL355395A1; EP1232309B1; HU227923B1; US20020144861A1; US6609591B2; BR0015827B1; KR20020070442A; PL208332B1

Abstract

The invention relates to a soundproofing element (2) which comprises a first sheet (4) consisting of a flexible material and a second sheet (6) consisting of flexible material. The sheets (4, 6) are positioned at a distance from one another and at least two chambers (14, 16) are formed between said sheets (4, 6) for receiving a filler medium. According to the invention, the first sheet (4) and the second sheet (6) are connected by connection means located on opposing surfaces. Appropriately, the connection means have at least one connecting length (8) consisting of flexible material. The inventive soundproofing element (2) is constructed simply and robustly. When empty, it is easy to handle and transport. In addition, the inventive soundproofing element is suitable for filling with a high-density filler medium, for example sand or similar.

Description

Soundproofing element and soundproofing wall

The invention relates to a soundproofing element of the type mentioned in the preamble of claim 1.

Soundproofing elements are generally known, for example in the form of soundproofing walls, and are used for soundproofing, for example for insulating traffic noise, construction noise or noise in factories.

From DE 30 04 102 C2 and DE 42 30 786 AI soundproofing elements are known which are essentially rigid. These soundproofing elements offer effective sound insulation. The disadvantage, however, is that they are difficult to handle due to their high weight.

A soundproofing element is known from DE 196 52 871 C2, which has a first web made of flexible material and a second web made of flexible material, the webs being spaced apart and a chamber being formed between the webs for receiving a filling medium. In the known soundproofing element, the webs are designed in the form of a flexible envelope that can be inflated with air or other gases as the filling medium. A disadvantage of the known soundproofing element is that the soundproofing effect is low due to the gaseous filling medium. A similar soundproofing element is also through

BESTATIGUNGSKOPIE DE 44 22 585 Cl known.

From DE 83 09 535 Ul a sound-absorbing mat is known which has two layers of plastic film, between which chambers are formed for receiving an insulating material.

From the magazine "Swiss Engineer and Architect", 38/1984, p. 718, a soundproofing element of the type in question is known which has a first web made of flexible material and a second web made of flexible material, the webs being spaced apart and wherein the first web and the second web are connected to each other on facing surfaces by connecting means. In the known soundproofing element, the tracks are formed by a spacer fabric, the spacing threads or pile threads of which form the connecting means for connecting the tracks to one another. The flexible soundproof wall formed in this way has excellent sound insulation properties. The disadvantage, however, is that it is complex and therefore expensive to manufacture. Another disadvantage is that the known soundproofing element can only be produced with a small maximum width.

The invention further relates to a soundproof wall of the type mentioned in the preamble of claim 49. Such a soundproof wall is known from GB 2 305 451 A. It has a first soundproofing element and at least a second soundproofing element, the first soundproofing element and the second soundproofing element being arranged adjacent to one another and additional soundproofing means being provided which span a region in which the first and second soundproofing elements adjoin one another in a soundproof manner , The additional sound insulation medium are formed in the soundproof wall known from the publication by cover plates which are connected by screws or rivets to a support post of the soundproof wall. A disadvantage is that this construction is complex and therefore expensive to manufacture and that the cover plate has only a low soundproofing effect.

Similar soundproof walls are also known from DE 295 13 248 Ul, DE 91 13 416.1 Ul, DE 197 32 904 AI and DE 86 12 223 Ul.

The invention is based on the object of specifying a soundproofing element and a soundproofing wall, the manufacture of which is simplified and therefore more cost-effective and with which a high soundproofing effect can be achieved.

This object is achieved with regard to the soundproofing element by the teaching specified in claim 1 and with regard to the soundproofing wall by the teaching specified in claim 49. The invention is based on the knowledge that an excellent sound-absorbing effect can be achieved by using a filling medium made of solid material with high density, for example sand, granules or the like. Proceeding from this, the invention is based on the idea of connecting the first web and the second web to one another in such a way that at least two chambers are formed and an undesired deformation of the soundproofing element when filled with a filling medium made of solid material is prevented.

The soundproofing element according to the invention thus enables the use of filling media made of solid materials which have a considerably higher density and thus a considerably higher sound-insulating effect than gaseous media. An excellent sound-insulating effect is thus achieved with the soundproofing element according to the invention.

The soundproofing element according to the invention has a low weight in the unfilled state and is therefore easy to handle. It can therefore be used in many different ways, for example as a mobile soundproofing element for temporary sound insulation, for example in the area of construction sites. After setting up the soundproofing element, it is filled with the filling medium so that the desired soundproofing effect is achieved.

After use, the filling medium can be removed from the soundproofing element again, so that the same advantages with regard to the handling when dismantling the soundproofing element result as when installing.

The connecting means can be designed in any suitable manner, as long as the required connection between the first track and the second

Web is guaranteed. For example, the connecting means can have essentially rigid connecting elements. An advantageous further development provides that the connecting means at least have a connecting track made of flexible material. The connecting track ensures a secure connection of the first track to the second track, the weight of the soundproofing element being kept low by dispensing with essentially rigid connecting elements, for example made of metal. The connecting sheet can be made of the same material as the first sheet and the second sheet. However, it can also consist of a different material.

An extremely advantageous further education In the aforementioned embodiment, the connecting path is alternately connected to the first path and the second path along the width dimension of the first path and the second path or along the height dimension of the first path and the second path. In this way, there is a uniform connection along the width or along the height of the webs and thus, when filled, the sound insulation element is evenly loaded by the filling medium. Because of uneven

Deformations or damage to the soundproofing element caused by loads are reliably avoided in this way.

In the aforementioned embodiment, the connecting web expediently connects the first web to the second web in cross section essentially in a zigzag or meandering manner. In this way, the uniformity of the connection of the first web with the second web is further improved. In principle, the connecting track can have any suitable shape. For example, the connecting web can only extend over part of the width of the first web and / or the second web, so that the two webs are connected to one another only over part of their width, which may be sufficient depending on the application. It is also possible to provide a plurality of connecting tracks that are adjacent to or spaced apart from one another. However, the connecting track advantageously extends over a substantial part of the width of the first and / or the second track, preferably essentially over the entire width of the first track and / or the second track. In this embodiment, the first web with the second web is over a substantial part of the pulp te or the entire width of the webs connected. In this way, the soundproofing element is highly stable even when it is filled with filling media of higher density. Basically, it is sufficient if the

The connecting track extends only over part of the height of the first track and / or the second track. However, the stability of the soundproofing element can be further improved in that the connecting track extends over a substantial part of the height of the first track and / or the second track, preferably essentially over the entire height of the first track and / or the second track, how this is provided for by further training. The connecting path is expediently connected to the first path and the second path at connecting points which are spaced apart from one another, preferably substantially equally spaced from one another.

The connection points can be designed in any suitable manner, for example in a punctiform manner. An advantageous development provides that the connection points are linear or striped and are preferably parallel to one another. The linear or strip-shaped connection reliably prevents the webs from tearing apart from one another even when filled with a high-density filling medium.

A further development of the aforementioned embodiment provides that the line or strip-shaped connection points run essentially vertically. Another embodiment provides that the connecting track is connected to the first track and the second track in such a way that a plurality of adjacent, upwardly open chambers are formed is. In this embodiment, the filling of the soundproofing element with the filling medium is particularly simple. It is done by pouring the filling medium into the chambers from above. The chambers can communicate with each other. In order to ensure a uniform distribution of the filling medium over the chambers, it is advisable that the chambers are separated from one another.

Expediently, however, the filling openings can be closed by closing means connected to the soundproofing element, in particular molded onto it.

In the aforementioned embodiment, the closing means can be designed in any suitable manner. A further development provides that the closing means have at least one flap or tab made of flexible material, which can be fixed in its closed position. This embodiment is simple and therefore inexpensive to manufacture. In this case, a common flap or tab can be provided to close at least some of the filling openings. In this way, the construction of the soundproofing element is further simplified and thus made even more cost-effective. In the aforementioned embodiments, the flap or tab can be fixed in its closed position in any suitable manner, for example by means of push buttons or the like. Advantageously, the flap or tab can be fixed in its closed position by means of a Velcro fastener, as one embodiment provides. In this way, the closing of the filler openings is made easier.

In principle, the filling medium can be removed again through the filling opening, for example by pouring out. An advantageous further development provides that at least one closable outlet opening for the filling medium is provided at a distance from the filling opening. In this embodiment, the removal of the filling medium is made easier.

In the aforementioned embodiment, a common outlet opening can be provided for all chambers. However, a closable outlet opening for the filling medium is expediently provided for each chamber. In this embodiment, the filling medium can be removed or discharged separately from the individual chambers.

According to the respective requirements, closing means for closing the outlet openings can be designed in any suitable manner. A particularly advantageous development provides that the or each outlet opening can be closed by means of a screw cap. In this way, the draining of the filling medium from the soundproofing element is further facilitated.

The flexible material of the first web and the second web and the connecting web can be selected within wide limits in accordance with the respective requirements, the webs being able to consist of the same flexible material or of different materials, for example plastic films or tarpaulins. According to a particularly advantageous development, the flexible material of the first web and / or the second web and / or the connecting web is a woven or knitted fabric. Due to the woven or knitted structure, damage to the webs is avoided even when filling high-density filling media and frequent use of the soundproofing element. In this way, the soundproofing element is particularly resistant and durable.

Basically, it is sufficient if the flexible material is uncoated. However, the properties of the soundproofing element can be further improved in that the first web and / or the second web and / or the connecting web has or have a one-sided or two-sided coating.

In the aforementioned embodiment, the coating can have a layer of PVC, as is provided by a further development. The flammability of the soundproofing element is made more difficult by the layer of PVC. The thermal stability and UV resistance are also improved.

In addition to or instead of the layer of PVC, the coating can have a layer of a flame-retardant material, as another embodiment provides. In this way, flame protection is further improved.

The coating expediently has a lacquer layer on its surface, so that the surface of the soundproofing element is designed to be scratch-resistant and dirt-repellent. It also makes it difficult for dirt and microorganisms to enter the web. In order to make the soundproofing element more visually appealing, the lacquer layer can be printed, for example. B. with an advertising imprint. Any varnish can be used, for example acrylates and fluoropolymer systems. Another advantage of the lacquer layer is that the weather resistance of the soundproofing element is improved.

The connecting path can be connected to the first path and the second path in a variety of ways, for example in a form-fitting manner by riveting. Conveniently, however, the connecting sheet is welded or glued to the first sheet and the second sheet. This simplifies the manufacture of the soundproofing element according to the invention. With appropriate sealing of the or each chamber of the soundproofing element, a gaseous or liquid medium can be used as the filling medium. However, the filling medium is expediently a pourable medium. In this way, the filling of the soundproofing element is simple and the escape or leakage of the filling medium is reliably prevented. Filling media with a high density are particularly preferred, which have a particularly good sound-absorbing effect. The filling medium can, for example, have sand, granules or the like, as is provided by another development. A mixture of different filling media, for example sand with crushed scrap, can also be used. With a corresponding design of the soundproofing element and use of a suitable filling medium, the soundproofing element according to the invention can be designed to be self-supporting. In particular when using high-density filling media, however, it is advantageous that a support structure is provided for holding the soundproofing element. In this way, large-area soundproofing elements can be realized even when using such filling media.

In the aforementioned embodiment, the supporting structure can be designed in a variety of ways, for example frame-like, in accordance with the respective requirements. A further development provides that the supporting structure has two side supports spaced apart from one another. In this embodiment the soundproofing element is held laterally, so that there is a stable structure.

The stability can be further improved if the supporting structure has a cross member that connects the side supports.

In the aforementioned embodiments, the soundproofing element can be held in any suitable manner on the side supports or on the cross member, for example by means of eyelets attached to hooks which are attached to the supports or the cross member. A particularly advantageous embodiment provides that the soundproofing element is connected to the side supports and / or the cross member by means of a key / groove connection. In this way, a positive connection between the soundproofing element and the

Support structure achieved so that the soundproofing element is held particularly securely on the support structure.

An extremely advantageous development of the teaching according to the invention provides clamping means for tensioning the soundproofing element. In this embodiment, because of the tensioning action of the tensioning means, a particularly uniform distribution of the filling medium in the soundproofing element can be achieved, and the risk of undesired deformations of the soundproofing element during filling is further reduced.

In the aforementioned embodiment, the soundproofing element can be tensioned in the vertical and / or horizontal direction by means of the tensioning means. According to another embodiment, the tensioning means have a first part for holding the soundproofing element at one edge and a second part for holding the soundproofing element at an edge opposite in a tensioning direction, the the first part and the second part for tensioning the soundproofing element are adjustable relative to one another and can be fixed in their respective adjustment positions. This embodiment is simple in construction and therefore inexpensive to manufacture.

A further development of the aforementioned embodiment provides that the first part is a holding part, which holds the soundproofing element stationary at its lower edge, and that the second part is formed by the cross member, which is adjustable relative to the holding part in the tensioning direction, and that Soundproofing element holds at its upper edge. In this embodiment, the soundproofing element is tensioned by adjusting the cross member in the vertical direction relative to the holding part.

The cross member can be adjusted relative to the holding part in any suitable manner. An advantageous embodiment provides that the cross member is connected to the lateral supports by a screw device, in particular an adjusting screw or a spindle, and is adjustable relative to the holding part by means of the screw devices. This embodiment is easy to use and robust in construction. According to another development of the teaching according to the invention, the soundproofing element has on its lower edge a sealing element which surrounds the soundproofing element in a sealing manner from below. The sealing element reliably prevents moisture from penetrating into the webs, so that the weather resistance of the soundproofing element is further improved.

Here, the sealing element is preferably substantially U-shaped in cross section, the The sealing element is expediently formed by a tarpaulin or film, which is connected to the soundproofing element, preferably by gluing or welding. This embodiment is particularly simple and therefore inexpensive to manufacture.

However, the sealing element can also be formed by a coating, as is provided by another embodiment.

The shape and size of the soundproofing element according to the invention can be selected within wide limits. The soundproofing element can, for example, be bent or curved in any way, for example be circular or semicircular in cross section. It can also be designed as a soundproof housing and completely surround a sound source. For this purpose, the soundproofing element can, for example, be cubic or dome-shaped. However, one embodiment provides that the soundproofing element is essentially flat. In order to shield a sound source, in this embodiment several soundproofing elements according to the invention can be grouped next to one another around the sound source and thus form a soundproofing wall.

Another development of the teaching according to the invention further provides that, in addition to the first and the second web, at least one further web is provided and that the further web is spaced apart from the adjacent first or second web and connected to it by connecting means. This results in a multi-layer structure, through which the soundproofing effect is further improved. Here, the connecting means can be designed in the same way as the connecting means for connecting the first web to the second web. In order to improve the soundproofing effect of the soundproofing element in an area in which the soundproofing element adjoins the floor, an expedient further development provides at least one pocket-shaped receptacle for a filling medium or a greening, which is arranged in front of the soundproofing element in an area which the soundproofing element borders on the floor with its lower edge.

The pocket-shaped receptacle is expediently designed to be open at the top and / or consists of a flexible material, as further developments provide.

In order to further improve the sound-absorbing effect through the pocket-shaped receptacle, a further development provides that a pocket-shaped receptacle is provided in front of the soundproofing element on both sides thereof, the receptacles being connected to one another and engaging around the lower edge of the soundproofing element in a substantially positive manner ,

Advantageous and expedient developments of the noise barrier according to the invention are specified in claims 50 to 54.

The invention is explained in more detail below with reference to the attached, highly schematic drawing, in which an exemplary embodiment is shown.

It shows :

1 shows a schematic perspective illustration of a section of a soundproofing element according to the invention, which consists of a first track and a second track which are spaced apart and connected to one another by means of a connecting track, FIG. 2 shows a schematic view from the front 1, which is held by a supporting structure, FIG. 3 shows a schematic section along a line III-III in FIG. 2,

Fig. 4 is a schematic perspective view of a detail in the area of the connection of one of the side supports to the cross member of the supporting structure. 5 shows a highly schematic representation of a horizontal section through a soundproofing wall, which consists of adjacent soundproofing elements according to the invention, additional soundproofing means being formed by an additional soundproofing element, and FIG. 6 a highly schematic representation of a vertical section through a further exemplary embodiment of an invention - Appropriate soundproofing element, in which the additional soundproofing means are formed by pocket-shaped receptacles.

In Fig. 1, a soundproofing element 2 is shown, which has a first sheet 4 and a second sheet 6 made of flexible material, which are spaced apart and are connected to each other on facing surfaces by connecting means, which in this embodiment by a connecting sheet 8 made of flexible Material are formed.

The flexible material of the sheets 4, 6, 8 in this embodiment consists of a polyester fabric. be, which has a coating on both sides. The coating has a layer of PVC, which makes flammability difficult and improves the thermal stability and UV resistance of the sheets 4, 6, 8. On its surface, the coating has a lacquer layer made of a fluoropolymer, by means of which the surface of the soundproofing element 2 is made scratch-resistant and dirt-repellent and prevents dirt and microorganisms from penetrating. The surfaces of the webs 4, 6 facing away from one another can be printed.

The connecting path 8 is connected along the width of the first path and the second path, that is, in Fig. 1 in the direction of an arrow 10 alternately with the first path 4 and the second path 6, such that the connecting path 8 the first path 4 with the second web 6 connects substantially zigzag or meandering. The connection of the connecting track 8 to the first track 4 and the second track 6 is carried out by welding at strip-shaped, essentially vertical connecting points, of which only one connecting point is provided with the reference number 12 in the drawing.

The zigzag or meandering connection of the connecting web 8 of the first web 4 and the second web 6 forms a plurality of adjacent, upwardly open chambers with essentially the same volume, of which only two chambers with the reference numerals 14 in the drawing , 16 are provided, which are formed at their upper end

Filling openings 18, 20 can be filled with a filling medium. In this embodiment, the filling medium is formed by sand, which results in a particularly good sound-absorbing effect. It cannot be seen from the drawing, and it is therefore explained here that the connecting track 8 extends essentially over the entire height, that is to say in FIG. 1 in the direction of an arrow 22, and essentially over the entire width, that is in the direction of arrow 10 in Fig. 1, the first web 4 and the second web 6 extends. In this way, a uniform connection of the webs 4, 6 with one another is achieved essentially over the entire height and the entire width of the first web 4 and the second web 6. The soundproofing element 2, which is designed to be flexible in the exemplary embodiment, therefore has a high stability, so that damage in the area of the connection points 12 is reliably avoided even when filled with high-density filling media. In addition, there is a uniform distribution of the filling medium in the soundproofing element 2 when filled.

2 shows a view from the front of the soundproofing element 2, which in this exemplary embodiment has a supporting structure which consists of two lateral supports 24, 26 and a cross member 28 which connects the supports 24, 26 to one another. Furthermore, the support structure in this exemplary embodiment has a holding part 30 which is firmly connected to the lateral supports 24, 26 and holds the soundproofing element 2 in a stationary manner at its lower edge 32. The cross member 28 holds the soundproofing element 2 at its upper edge and, in a manner explained in more detail below with reference to FIG. 4, is vertically adjustable relative to the holding part 30 in the direction of a double arrow 36 and can be fixed in its respective adjustment position and thus forms tensioning means for tensioning the interconnected tracks 4, 6, 8.

The soundproofing element 2 has on its sides as well as at its upper end piping beads 38, 40, 42, which engage positively in complementarily shaped grooves in the supports 24, 26 and the cross member 28, so that the soundproofing element 2 securely connects to the supporting structure via a piping / groove connection connected is. From FIG. 2 it can be seen that the strip-shaped connection points 12 extend essentially over the entire height of the webs 4, 6, such that the connecting web 8 the webs 4, 6 substantially over the entire height of the webs 4, 6 connects with each other.

In the area of the filler openings 18, 20, the soundproofing element 2 has closing means which are formed by a flap 46 which is connected to the second track 6 and is articulated on its upper edge 44 and can be folded out in FIG closes the filler openings of the adjacent chambers 14, 16 and the further chambers facing the viewer. In its closed position shown in FIG. 2, the flap 46 can be fixed on the second track 6 by means of a Velcro fastener, not shown.

In the region of their lower end, the chambers have outlet openings for the filling medium, which in this exemplary embodiment can be closed by screw closures, of which only one screw closure is provided with the reference symbol 48 in FIG. 2.

FIG. 3 shows a section along a line III-III in FIG. 2. It can be seen that the welt beads 38, 40 of the interconnected tracks 4, 6, 8 into complementarily shaped grooves 48, 50 of the side supports 24, 26 intervene. The side supports 24, 26 are formed by solid profile parts in this embodiment. However, you can also use hollow profile parts be formed.

3 that the connecting web extends essentially over the entire width of the webs 4, 6 and connects them to one another in a zigzag or meandering manner. The chambers facing away from the viewer in FIG. 2, for example the chamber 14, likewise have outlet openings which are closed by screw closures, of which only one screw closure is provided with the reference number 52 in FIG. 3.

2 shows a perspective view of a detail in the area of the connection of the cross member 28 to the lateral support 24. The support 24 has a U-shaped bracket 56 which is connected to the support 24 by means of plug pins 58, 60. The free end of the cross member 28 is received between the legs of the U-shaped bracket 56 and connected to the support 24 in an adjustable manner in the vertical direction by means of an adjusting screw 60. The functioning of the soundproofing element 2 according to the invention is as follows:

The soundproofing element 2 has a low weight in the unfilled state, so that it can be easily transported and handled. To shield sound, the soundproofing element 2 is in the area of

Sound source positioned accordingly. The chambers 14, 16 and the further chambers are then filled with sand as the filling medium via the associated filling openings 18, 20. In order to avoid the accumulation of the filling medium in the lower area of the chambers, this is

Soundproofing element 2 previously biased by vertical adjustment of the cross member 28 in the vertical direction. In this way there is a "sagging" of the sand and an undesirable accumulation in the lower area of the chambers 14, 16 avoided. Due to the uniform distribution of the sand in the chambers 14, 16 achieved in this way, essentially the same sound-absorbing effect is achieved over the entire surface of the essentially flat soundproofing element 2. In addition, this results in a uniform loading of the connection points 12, so that damage to the soundproofing element 2 is avoided in these areas. After the chambers 14, 16 and the other chambers have been filled with sand, the filler openings 18, 20 and the further filler openings are closed by means of the flap 46 and the flap 46 is fixed in its closed position by means of the Velcro fasteners. In this way, penetration of moisture into the chambers 14, 16 is reliably avoided.

The soundproofing element 2 according to the invention has a particularly good soundproofing effect due to the high density filling medium.

After using the soundproofing element 2, the sand can be drained by opening the screw caps 48, 54 and the further screw caps. The soundproofing element 2 can then be easily handled and transported away again.

5 shows a horizontal section through a soundproofing wall, generally designated 100, which consists of the soundproofing element 2 according to FIGS. 1 to 4 and a further soundproofing element 102. The soundproofing element 102 is constructed as described for the soundproofing element 2 with reference to FIGS. 1-4. The soundproofing elements 2, 102 are arranged adjacent to one another and adjoining one another, the soundproofing element 102 having webs 104, 106, 108 which are connected to one another their side facing the soundproofing element 2 are held on the support 26 and on their side facing away from the soundproofing element 2 on a support 126.

The soundproofing elements 2, 102 have connecting means in the region of their edges for connection to additional soundproofing means, which in this exemplary embodiment are formed by an additional soundproofing element 202. The additional soundproofing element 202 is constructed in a manner corresponding to the soundproofing elements 2, 102 and has tracks 204, 206 which are connected to one another via a connecting track 208. The chambers formed in the soundproofing elements 2, 102 and the additional soundproofing element 202 are filled with a filling medium, for example with water, when the soundproofing wall 100 is used.

In this exemplary embodiment, the connecting means for connecting the soundproofing elements 2, 102 to the additional soundproofing elements 202 are formed by Velcro fasteners which are arranged at 210, 212. The additional soundproofing element 202 can be non-positively and releasably connected to the soundproofing elements 2, 102 by means of the Velcro fasteners which run over the entire height of the soundproofing elements 2, 102. It extends over the entire height of the soundproofing elements 2, 102 and, as can be seen from FIG. 5, completely spans the area in which the soundproofing elements 2, 102 adjoin one another. In this way, the formation of a sound bridge is avoided in the area of the support 26, so that the soundproof wall 100 has a high overall sound-absorbing effect.

In a corresponding manner, further Velcro fasteners can be closing parts 214, 216 may be arranged in order to enlarge the soundproofing wall 100 by adding further soundproofing elements and to add additional soundproofing means, for example in the form of additional soundproofing elements 202, in the areas in which adjacent soundproofing elements adjoin one another.

6 shows a vertical section through a further exemplary embodiment of a soundproofing element 2 according to the invention. In this exemplary embodiment, the additional soundproofing means are formed by two pocket-shaped receptacles 218, 220 which are open at the top and are provided for receiving greening 222, 224. The pocket-shaped receptacles 218, 220 are connected to one another via a material web 226 and encompass the soundproofing element 2 on its lower edge essentially in a form-fitting manner, as can be seen from FIG. In this way, the additional soundproofing means formed by the pocket-shaped receptacles 218, 220 extend into an area in which the lower edge of the soundproofing element 2 abuts the floor. In this way, the formation of a sound bridge is avoided in this area and the sound-absorbing effect is improved.

Claims

claims

1. soundproofing element,

with a first sheet (4) made of flexible material and a second sheet (6) made of flexible material,

wherein the first web (4) and the second web (6) are connected to each other and

wherein the first web (4) and the second web (6) are connected to one another at surfaces facing one another by connecting means,

characterized,

that the soundproofing element (2) has at least two chambers (14, 16) for receiving a filling medium and

that the chambers (14, 16) each have a closable filling opening (18, 20) for the filling medium.

2. Soundproofing element according to claim 1, characterized in that the connecting means have at least one connecting track (8) made of flexible material.

3. Soundproofing element according to claim 2, characterized in that the connecting track (8) along the The width of the first track (4) and the second track (6) or along the height of the first track (4) and the second track (6) is alternately connected to the first track (4) and the second track (6).

4. Soundproofing element according to claim 2, characterized in that the connecting web (8) connects the first web (4) with the second web (6) in cross-section essentially zigzag or meandering.

5. Soundproofing element according to claim 2, characterized in that the connecting web (8) over a substantial part of the width of the first web (4) and / or second web (6), preferably substantially over the entire width of the first web (4th ) and / or the second track (6).

6. Soundproofing element according to claim 2, characterized in that the connecting track (8) over a substantial part of the height of the first track (4) and / or the second track (6), preferably substantially over the entire height of the first Web (4) and / or the second web (6) extends.

7. Soundproofing element according to claim 2, characterized in that the connecting web (8) with the first web (4) and the second web (6) at mutually spaced, preferably substantially equally spaced connection points (12) is connected.

8. Soundproofing element according to claim 7, characterized in that the connecting points (12) linear shaped or striped and preferably parallel to each other.

9. Soundproofing element according to claim 8, characterized in that the line or strip-shaped

Junctions (12) run essentially vertically.

10. Soundproofing element according to claim 2, characterized in that the connecting track (8) is connected to the first track (4) and the second track (6) in such a way that a plurality of adjacent chambers (14, 16.) ) is formed.

11. Soundproofing element according to claim 10, characterized in that the chambers (14, 16) are separated from one another.

12. Soundproofing element according to claim 1, characterized in that the filling openings (18, 20) can be closed by means of the closing means connected to the soundproofing element (2), in particular molded onto the latter.

13. Soundproofing element according to claim 12, characterized in that the closing means have at least one flap (46) or tab made of flexible material which can be fixed in its closed position.

14. Soundproofing element according to claim 13, characterized in that a common flap (46) or tab is provided for closing at least some of the filling openings (18, 20).

15. Soundproofing element according to claim 13 or 14, characterized in that the flap (46) or tab can be fixed in its closed position by means of a Velcro fastener.

16. Soundproofing element according to claim 1, characterized in that at least one closable outlet opening is provided for the filling medium.

17. Soundproofing element according to claim 16, characterized in that each chamber (14, 16) has a closable outlet opening for the filling medium.

18. Soundproofing element according to claim 16 or 17, characterized in that the or each outlet opening can be closed by means of a screw cap (48, 54).

19. Soundproofing element according to claim 1, characterized in that the flexible material of the first web (4) and / or the second web (6) and / or the connecting web (8) is a woven or knitted fabric.

20. Soundproofing element according to claim 1, characterized in that the first web (4) and / or the second web (6) and / or the connecting web (8) has or have a one-sided or two-sided coating.

21. Soundproofing element according to claim 20, characterized in that the coating has a layer of PVC.

22. Soundproofing element according to claim 20, thereby indicates that the coating has a layer of a flame-retardant material.

23. Soundproofing element according to claim 20, characterized in that the coating has a lacquer layer on its surface.

24. Soundproofing element according to claim 2, characterized in that the connecting web (8) with the first web (4) and the second web (6) is welded and / or glued.

25. Soundproofing element according to claim 1, characterized in that the filling medium is a pourable medium.

26. Soundproofing element according to claim 25, characterized in that the filling medium comprises sand, granules or the like.

27. Soundproofing element according to claim 1, characterized by a supporting structure for holding the interconnected webs (4, 6, 8).

28. Soundproofing element according to claim 27, characterized in that the supporting structure has two spaced apart lateral supports (24, 26).

29. Soundproofing element according to claim 27, characterized in that the supporting structure has a cross member (28) which connects the lateral supports (24, 26) to one another.

30. Soundproofing element according to claim 28 or 29, characterized in that the soundproofing element (2) is connected to the side supports (24, 26) and / or the cross member (28) by means of a piping / groove connection (38, 40, 42; 50, 52).

31. Soundproofing element according to claim 1, characterized by tensioning means for tensioning the soundproofing element (2).

32. Soundproofing element according to claim 31, characterized in that the soundproofing element (2) can be tensioned in the vertical and / or horizontal direction by means of the tensioning means.

33. Soundproofing element according to claim 31, characterized in that the tensioning means have a first part for holding the soundproofing element (2) at one edge and a second part for holding the soundproofing element (2) at an opposite edge in a clamping direction, the first part and the second part for tensioning the tracks (4, 6, 8) can be adjusted relative to one another and can be fixed in their respective adjustment position.

34. Soundproofing element according to claim 33, characterized in that the first part is a holding part (30) which holds the soundproofing element (2) at its lower edge (32) stationary, and that the second part is formed by the cross member (28) , which is adjustable in the clamping direction relative to the holding part (30) and holds the soundproofing element (2) at its upper edge (34).

35. Soundproofing element according to claim 34, thereby indicates that the cross member (28) is connected to the lateral supports (24, 26) by a screwing device, in particular an adjusting screw (60) or a spindle, and can be adjusted relative to the holding part (30) by means of the screwing devices.

36. Soundproofing element according to claim 1, characterized in that the soundproofing element (2) at its lower edge (32) has a sealing element which surrounds the soundproofing element (2) sealingly from below.

37. Soundproofing element according to claim 36, characterized in that the sealing element is substantially U-shaped in cross section.

38. Soundproofing element according to claim 36, characterized in that the sealing element is formed by a tarpaulin or film which is connected to the webs (4, 6, 8), preferably by gluing or welding.

39. Soundproofing element according to claim 36, characterized in that the sealing element is formed by a coating.

40. Soundproofing element according to claim 1, characterized in that the soundproofing element (2) is substantially planar.

41. Soundproofing element according to claim 1, characterized in that in addition to the first web (4) and the second web (6) at least one further web is provided and that the further web to the adjacent first web (4) or second web (6th ) spaced and is connected to it by connecting means.

42. Soundproofing element according to claim 1, characterized by at least one pocket-shaped receptacle (218, 220) for a filling medium or greenery, which is arranged in front of the soundproofing element (2) in an area in which the soundproofing element (2) with its lower edge on the Floor adjoining.

43. Soundproofing element according to claim 42, characterized in that the or each pocket-shaped receptacle is open at the top.

44. Soundproofing element according to claim 42, characterized in that the or each pocket-shaped receptacle consists of a flexible material.

45. Soundproofing element according to claim 42, characterized in that a pocket-shaped receptacle (218, 220) is provided on both sides of the soundproofing element (2), the receptacles (218, 220) being connected to one another and the soundproofing element (2) on the latter Grip the bottom edge essentially in a form-fitting manner.

46. Soundproofing element according to claim 1, characterized by connecting means for connecting the soundproofing element (2) with additional soundproofing means which, when forming a soundproofing wall consisting of several soundproofing elements (2, 102, 202), an area in which the soundproofing element (2) an adjacent soundproofing element (102, 202) adjoins to span soundproofing.

47. Soundproofing element according to claim 46, characterized in that the connecting means are arranged in the region of an edge of the soundproofing element (2) adjacent to the adjacent soundproofing element (102, 202) when a soundproofing wall is formed.

48. Soundproofing element according to claim 46, characterized in that the connecting means have at least part of a Velcro fastener (210).

49. soundproof wall,

with a first soundproofing element (2) and

with at least one second soundproofing element (102),

wherein the first soundproofing element (2) and the second soundproofing element (102) are arranged adjacent to one another and

additional soundproofing means are provided which span a region in which the first soundproofing element (2) and the second soundproofing element (102) adjoin one another,

characterized,

that the additional soundproofing means have an additional soundproofing element (202) according to one of the preceding claims, which is associated with the first

Soundproofing element (2) and the second soundproofing element (102) can be detachably connected.

50. Acoustic barrier according to claim 49, characterized is characterized in that the first soundproofing element (2) and / or the second soundproofing element is or are formed by a soundproofing element according to one of claims 1 to 45.

51. Soundproofing wall according to claim 49, characterized in that the additional soundproofing element (202) is non-positively connected to the first soundproofing element (2) and / or the second soundproofing element (102).

52. Soundproofing wall according to claim 49, characterized in that the additional soundproofing element (202) is connected to the first soundproofing element (2) and / or the second soundproofing element (102) by means of at least one Velcro fastener.

53. Soundproofing wall according to claim 49, characterized in that the additional soundproofing element (202) is connected by clamping means to the first soundproofing element (2) and the second soundproofing element (102).

54. Soundproofing wall according to claim 49, characterized in that the additional soundproofing element (202) is arranged on the side of the soundproofing wall facing the sound source.