Line leadthrough for the leadthrough of lines through a component

A line penetration for routing a line through a passage opening of a building part that includes a first and a second building-part wall, between which an intermediate space is provided. The line penetration has a closure element that includes: an inner part for filling the intermediate space in the region of the passage opening; holding parts, with cross section smaller than that of the inner part, disposed on both sides of the inner part; a straight-through line opening, which penetrates the inner part and the holding parts in the direction in which they are disposed; and a sliding device, which is formed in order to guide the line slidingly and gas-tightly through the line opening.

TECHNICAL FIELD

The invention relates to a line penetration for routing a line through a building part, especially through a building wall or building ceiling. In particular, the present invention relates in general to fire-protection measures for routing lines through a building part.

TECHNICAL BACKGROUND

In buildings and installations, lines routed through a building part, such as a wall or a ceiling, for example, must satisfy fire-protection requirements. For example, one essential requirement is that combustion gases or even fire must not be permitted to penetrate the building part, i.e. must not be permitted to travel from one room in a building to the next.

For this reason, it is customary, in the case of line penetrations through walls, to fill the intermediate space situated between the line and an inner wall of a passage opening with a flexible and rigid filling material, such as with mortar, PU bricks, acrylate sealing compound, mineral wool, especially in combination with spray coatings and the like.

In the fire situation, stresses may be caused by heat generation, in turn leading to strong mechanical forces between the wall and the line routed through it. Thereby a relative offset may develop between the line and the wall, whereby cracks and gaps may be formed in the filling material. This leads to permeability, possibly permitting combustion gases and fire to pass through.

In particular, considerable displacements between the line and the wall may develop during earthquakes, so that the previous approach of simply filling the intermediate space between the line and the inner wall of the passage opening with a filling material is not optimum. The filling material may detach, tear or break due to the occurring stresses, whereby the required impermeability is impaired. In particular, a relative displacement of the line perpendicular to the wall may lead to partial or complete detachment of the filling material from the line and/or from the passage opening or to tearing of the filling material.

Cable boxes common on the market are intended to route the line either through a combination of solid plastic and sealing material, although thereby the relative mobility of the line is considerably restricted, and so, in the event of violent shaking, damage to the cable box is almost unavoidable and impermeability to gas is no longer assured.

Furthermore, intumescent lamellas may be provided, which indeed ensure improved mobility of the routed line but do not have adequate impermeability to smoke gas.

A further approach is known, for example, from DE 10 2008 000 420 A1, in which a line penetration is disclosed that has a closed space for routing a line. An insert of intumescent material and at least one sealing element of an elastic material are provided in the housing of the line penetration, in order to achieve sealing in the fire situation.

A line penetration for routing lines through a building part is known from DE 10 2006 000 184 A1. The line penetration has a jacket tube and a base part, which is attached to a first axial end of the jacket tube and comprises a receiving space, surrounding a penetration, for a firestop material. Furthermore, an annular membrane-like sealing element is disposed at the first axial end of the jacket tube. A further membrane-like sealing element is disposed at the second axial end of the jacket tube, in order to seal the line penetration.

It is one object of the present invention to provide a line penetration with which one or more lines can be routed through a building part, for example a wall or a ceiling, so that this is impermeable to smoke gases in a fire situation. Furthermore, it is intended to ensure tolerance to shaking and relative displacements between the line and the building part, so that the impermeability of the line penetration is not impaired even after a relative displacement.

DISCLOSURE OF THE INVENTION

This object is solved by the line penetration according to claim1as well as by the line-penetration arrangement according to the secondary claim.

Further configurations are specified in the dependent claims.

As used within the scope of the present invention, the singular forms “one”, “a” and “an” also include the corresponding plural forms, unless something different can be inferred unambiguously from the relationship. Thus, for example, the term “one” is intended to mean “one or more” or “at least one”, unless otherwise indicated.

The terms “exhibit”, “with” and “have” are intended to be inclusive and mean that elements other than those cited may also be meant.

According to a first aspect, a line penetration is provided for routing a line through a building part, especially a wall or a ceiling of a building, with a first and a second building-part wall between which an intermediate space is provided, with a closure element comprising:an inner part for filling the intermediate space in the region of the passage opening;holding parts, with cross section smaller than that of the inner part, disposed on both sides of the inner part;a straight-through line opening, which penetrates the inner part and the holding parts in the direction in which they are disposed; anda sliding device, which is formed in order to guide the line or lines slidingly and gas-tightly through the line opening.

One idea for the above line penetration consists in providing an insert for a hollow building part, especially for a drywall, which permits nondestructive absorption of relative movements between a line routed through the building part and the building part itself. In this way, it is intended that impermeability to gases will be preserved, in order to suppress access of smoke gases through the passage opening in the building part in the fire situation. This is achieved by providing a closure element for a cavity between two building-part walls, in which two oppositely disposed wall openings are provided through the building-part walls.

The closure element has an inner part and holding parts connected thereto on both sides. The holding parts are designed to be received in the oppositely disposed wall openings. The holding parts and the inner part have a straight-through line opening, which extends in the direction in which the holding parts and the inner part are disposed, and in which the line to be routed through the building part is inserted.

The line or lines is/are guided slidingly in the line opening, so that forces oriented in the direction of axial extent of the line or lines or parallel to a surface direction of the building part can be absorbed.

The inner part is shaped such that, in the intermediate space, either it is movable in the direction transverse to the direction of axial extent of the line or lines or is so flexible that it permits corresponding movement of the line or lines. The holding parts, which are disposed in the building-part openings situated opposite from one another, respectively surround the line opening and have a size which, transverse to the direction of axial extent of the line opening, is smaller than the size of the wall openings. Thereby the holding parts prevent displacement of the closure element in the direction of a surface direction of the building part or transverse to the direction of axial extent of the line, so that overloading of the material of the inner part by compression or elongation can be avoided. In this way, impermeability to gas is ensured even after occurrence, for example, of an earthquake, which displaces the closure element in the building part.

Furthermore, an insert element may be provided that has an intumescent material and is disposed in at least one of the holding parts.

In particular, the insert element may surround the line opening and/or be disposed directly on the line opening.

It may be provided that the sliding device has, disposed in the line opening, a sheath and/or a coil of sliding film and/or a pasty slippery substance and/or a solid slippery material, which if necessary is mixed with at least one fire-protection additive and/or has been modified in a manner relevant to fire protection.

Furthermore, one or more cover parts may be provided, which are provided on the holding parts on one side or both sides of the closure element and in particular are formed in one piece with the holding parts and the inner part.

Furthermore, the inner part and the holding parts may be formed in one piece.

According to one embodiment, a clamp may be provided which has circlips that circumferentially surround the holding parts, in order to hold the closure element on the line or lines, wherein especially the circlips have, in the direction of axial extent, a width that corresponds substantially to the width of the holding parts.

The closure element may be formed from a flexible or solid material that is incombustible or fire-retardant.

Furthermore, the closure element may be formed either in one piece with a slit extending in the direction of axial extent of the line opening or in multiple pieces. This permits simple mounting of closure element5around line4.

According to a further aspect, a line-penetration arrangement is provided that comprises the above line penetration and a line, wherein the line opening has an inside cross section that corresponds substantially to the cross section of the line.

Furthermore, a building part may be provided with a first and a second building-part wall, which in particular are disposed with surfaces parallel to one another and between which an intermediate space is provided, wherein the inner part is disposed in the intermediate space and there is held displaceably, preferably transverse to the direction of axial extent of the line opening.

Alternatively, a building part may be provided with a first and a second building-part wall, which in particular are disposed with surfaces parallel to one another and between which an intermediate space is provided, wherein the inner part and the holding elements are formed flexibly and the inner part is fixed, especially clamped, in the intermediate space.

Furthermore, the holding parts may have a cross section that is smaller than the cross section of the wall opening in question.

DESCRIPTION OF EMBODIMENTS

FIG. 1schematically illustrates a cross-sectional diagram of a line penetration1through a building part2, such as through a wall or ceiling of a building.FIG. 2shows line penetration1without building part2, andFIG. 3shows a perspective diagram of line penetration1inserted into building part2.

Building part2has a first building-part wall21and a second building-part wall22, which are disposed opposite one another with a spacing and form an intermediate space Z. Building-part walls21,22are preferably disposed with surfaces parallel to one another. As an example, such a building part2may be a drywall, wherein these building-part walls21,22are frequently gypsum boards or the like.

Building-part walls21,22have a first or a second wall opening31or32, which are disposed opposite one another relative to intermediate space Z. A passage opening through building part2is formed by wall openings31,32. In the present exemplary embodiment, wall openings31,32have round cross sections, but wall openings31,32may also be provided with cross sections differing therefrom.

A line4is routed through passage opening3. Line4may be a cable, a cable duct, a pipe, a cable route, a ventilation pipe, a ventilation damper or a similar component.

A closure element5is disposed in intermediate space Z between building-part walls21,22. A straight-through line opening6, through which line4is routed or is intended to be routed, extends through closure element5.

Closure element5, which is illustrated in perspective inFIG. 2without building-part walls21,22, has an inner part51, the width B of which corresponds to the spacing of wall parts21,22or to the width of intermediate space Z. In particular, width B of inner part51is adapted to the spacing of building-part walls21,20in such a way that inner part51is able to move in surface direction of building-part walls21,22or transverse to the direction of axial extent A of line opening6.

Holding parts52, which are disposed in wall openings31,32during insertion of closure element5into building part2, are disposed opposite one another over the width of inner part51. Holding parts52are disposed in building-part openings31,32situated opposite from one another, and have a size, which, transverse to the direction of axial extent of line opening6, is smaller than the size of wall openings31,32. Thereby holding parts52prevent displacement of closure element5in the direction of a surface direction of the building part or transverse to the direction of axial extent of line4, so that overloading of the material of the inner part by compression or elongation can be avoided.

Alternatively, inner part51may be clamped between building-part walls21,22, so that movement of closure element5transverse to the direction of axial extent A of line opening6is suppressed. In order to absorb movements of line4transverse to the direction of axial extent A, the material of closure element5may be flexible, so that mobility of the line in line opening6is assured.

Between line4and line opening6, it is possible to provide a sliding device7, which permits sliding of line4in the direction of axial extent A. Sliding device7may be formed by means of a sheath71, which inside closure element5extends in line opening6and which, for line4, is made capable of sliding with a substance capable of sliding, such as a pasty slippery substance, e.g. a lubricant or a gel, or solid slippery materials, such as non-stick tape or PTFE. Alternatively, sliding device7may also provided by providing a substance capable of sliding or a material capable of sliding directly between the inside wall of the line opening in inner part51and holding parts52.

Closure element5may be formed from a solid or elastic material, especially containing polyacryl, building foam and the like, for example, that is formed to be incombustible or fire-retardant.

Especially in the region of holding parts52, an insert element54respectively surrounding line opening6may be provided that contains an intumescent material. Preferably, insert elements54are disposed directly around line opening6in holding parts52. In the fire situation, insert element54expands due to exposure to heat. Thereby line4situated in line opening6can be squeezed. Thereby permeability to gas that may occur in the fire situation due to melting of line4is prevented by building part2.

Closure element5may further have, on one or both sides, cover parts53, which are connected from outside onto holding parts52and have a size sufficient to cover the respective wall opening31,32located between inner part51and cover part53in question. In particular, the size of the respective cover part53is chosen such that, even in the event of a displacement of holding part52inside wall opening31,32, complete coverage of the wall opening in question by cover part53is assured. Cover part53on the one hand may represent protection of wall opening31,32from view and on the other hand, in the fire situation, it may contribute additionally to the impermeability to gases of wall openings31,32.

Furthermore, in the event of expansion of the material of insert element54, cover part53may support the direction of expansion in the direction of line opening6, so that it may be reliably assured that line6will be closed in the fire situation.

In particular, it is possible to form inner part51and holding parts52in one piece and cover parts separately, or to form inner part51, holding parts52and cover parts54in one piece. Closure element5may be formed either in one piece with a slit55extending in the direction of axial extent A of line opening6or in multiple pieces, in order that it can be placed on an existing line4.

In order to hold closure element5around line6, a clamp9, especially of metal, may be provided, as illustrated by way of example inFIG. 4. For each holding part51, clamp9has circlips91, which surround holding parts51and bear thereon, preferably completely circumferentially. Thereby it may be further achieved that the volume expansion of insert elements54in the fire situation preferably takes place inwardly and thus that line4is squeezed in better manner.

To hold circlips91in position more reliably, a bridge element92, likewise preferably metallic, may be provided, which is fastened via screw connections93, which are also used to close circlips91. Bridge element92may then be routed through axially extending slit55of closure element5, formed on one piece or multiple pieces.

Line penetration1is established by first installing first building-part wall21and routing line4through the existing first wall opening31. Line4may be provided with sliding device7, e.g. smeared with a pasty slippery substance. Thereupon closure element5is inserted in first wall opening31, so that the line is routed through straight-through line opening6of closure element5. Now second building-part wall22can be installed, so that it is received in the region of second holding element52between inner part51and cover part54of closure element5.