USE OF A POUR FOR POURING INTO A BASE ELEMENT

Description

[0001] The present invention relates to the use of a feedthrough for casting into a floor element and passing a line through it.

[0002] The penetration in question can be used as a building entry point, allowing the pipe to be routed through the floor slab into the building without a basement. The penetration is first positioned on site and aligned using, for example, a batter board. When the floor slab is poured, it is embedded in the floor slab, providing a clear passage for the pipe(s).

[0003] DE 10 2005 041 176 A1 discloses a bushing with a box that is cast into a base plate. The box is constructed from several stacked frame sections.

[0004] DE 20 2013 007 621 U1 also discloses a bushing with a box constructed from frame parts. These frame parts are clipped together, i.e., held together in a form-fitting manner.

[0005] EP 3 288 130 A1 shows a building inlet for installation in an external wall of a building, wherein an empty conduit is attached as an extension to a dividing element with several passage openings.

[0006] The body disclosed in US 2016 / 0090738 A1 is cast into a ceiling or wall element within a building as a pipe fixation.

[0007] From DE 20 2012 009 132 U1 an attachment piece is known which is attached to a cable and in whose cavity the cable can be pulled diagonally.

[0008] The present invention is based on the technical problem of specifying a particularly advantageous implementation as the subject of such a use.

[0009] This is achieved according to the invention with the features of claim 1. The feedthrough comprises a casing pipe and a casting body, the latter made of a foamed plastic material. Due to its nature, this is accessible to mechanical processing, e.g. cutting, by a fitter on site (the foam material has a cellular structure and lower density than the underlying plastic material itself). The casting body is then cast into the floor element in such a way that it protrudes above an upper edge of the floor element, i.e., protrudes upwards. The casing pipe extends below in the floor element or soil, and the casting body keeps an area above or at the upper end of the casing pipe free of the casting material of the floor element. The casing pipe can protrude upwards into the casting body or extend entirely below it.

[0010] After the floor element is cast, an upper section of the casting body is removed, and a mounting attachment is positioned in a mounting position relative to the casing pipe. Because the upper section is removed, which is possible without excessive force or tool expenditure due to the foamed plastic material, the mounting attachment can be positioned relatively close to or flush with the upper edge of the floor element. This can delay or prevent, as far as possible, a penetration of the gas line, for example, during a fire in the building. With a mounting attachment that is essentially flush with the floor in its installed position, the casing pipe below can be partially shielded from the building's interior. By comparison, if the upper section of the casting body were not removed, the protruding foam material could melt relatively quickly in the event of a fire, thus creating a "channel" to the gas line.

[0011] A pipe socket of the mounting attachment sits on or in the casing pipe in the installed position, extending the casing pipe upwards. The actual pipe can then be laid through the pipe socket and the casing pipe.

[0012] Preferred embodiments can be found in the dependent claims and the entire disclosure, whereby the presentation of the features does not always distinguish in detail between process, use, or device aspects; in any case, the disclosure is implicitly to be read with regard to all claim categories. For example, if a use of the implementation is described, this should always also be read as a disclosure of an implementation designed for a corresponding use.

[0013] The described advantages can already be realized if only a single line is routed through the penetration. This line could be a gas line, for example, but the described problem of "breakthrough" can also arise with another line (e.g., electrical or data). For example, leaking gas may be present in the jacket pipe of this line due to an incident or damage on the outside of the building. The penetration is preferably designed to carry multiple lines, for which purpose it preferably has multiple jacket pipes (see details below). These can then be used for the individual lines (water, gas, electrical or data, etc.).

[0014] The projection of the cast-in casting body refers to the vertical direction. For example, the upper end of the casting body can protrude from the upper edge of the floor element by at least 5 cm, 10 cm, or 15 cm, in increasing order of preference. The upper edge is at the surface of the floor element. In principle, the casting body could protrude any distance before cutting to length; however, for handling reasons, upper limits can be set at a maximum of 80 cm, 60 cm, or 50 cm, respectively.

[0015] The mounting attachment can preferably have a flange plate, i.e. an outwardly protruding flange, particularly preferably a fully circumferential flange which, in the mounted position, has a lateral overlap with the surface of the floor structure (a vertical projection of the flange lies at least partially in the surface of the floor structure); preferably, the flange sits on the surface of the floor structure. The flange plate is preferably made of plastic, in particular fiber-reinforced plastic, such as glass-fiber-reinforced polyamide. The mounting attachment can then also serve, in particular, as a pull-out protection, i.e. hold the cable axially in position (against a force directed downwards or towards the outside of the building) if the cable is subjected to tensile stress, for example during later excavation work with an excavator bucket (the excavator reaches into the cable string).

[0016] A through-opening is preferably provided in the flange plate through which the installed line then extends into the building interior. The through-opening is aligned downwards with the pipe socket. The line is then preferably sealed against the mounting attachment with a sealing element, e.g. made of an elastomer material. This ideally means that there is no fluid connection between the interior of the casing pipe and the interior of the building, and no gas or leaking gas, for example, can enter the building interior. The casing pipe generally serves as a covering or empty conduit for the actual line, which is usually only laid after the floor slab has been poured or the floor structure has been created. The casing pipe forms or is part of a protective conduit system that extends from the building to, for example, a street-side connection point (supply line).

[0017] This protective conduit system is then installed, at least in part, preferably in its entirety (up to the connection point), before the floor element is poured. When the floor element is poured, the trench can preferably already be refilled (including between the building and the connection point). The actual line, for example, a pipe (gas, water, or district heating) or a cable (electrical or data), can then be installed subsequently, namely by inserting it through the protective conduit system from inside the building or from the connection point. The aforementioned seal between the line and the mounting attachment can then be created.

[0018] The terms "top" / "bottom" refer to the vertical direction, i.e., the position in which the feedthrough is installed. Unless expressly stated otherwise, terms such as "side" or "inside" / "outside" refer to the directions perpendicular to a vertical axis of the feedthrough and away from it (these are horizontal).

[0019] Cutting the casting body to length after pouring reflects the fact that the height of the floor structure that will later be built on top of it is usually not yet known when the floor slab is poured. This means that the casing pipe cannot be positioned at a height before the floor slab is poured that would result in it being flush with the surface of the finished floor. The casting body creates a certain adaptability to different heights. The foamed plastic material is not only easy to cut to length, it can also be more cost-effective to produce than a hard plastic part, especially an injection-molded part. An integral, one-piece design of the casting body can also be advantageous, so that an excessive number of individual parts do not have to be assembled or disassembled during production or when adjusting the height.The casting body does not have to be disassembled into individual parts when adjusting the height, but can be cut to length relatively easily.

[0020] In a preferred embodiment, the foamed plastic material is polypropylene, preferably expanded polypropylene. This can offer a good compromise between separability on the one hand and sufficient stability during casting on the other. In general, expanded polystyrene, for example, would also be conceivable. In general, the foamed plastic material can have a bulk density (also called geometric density or volume weight) of, for example, a maximum of 300 kg / m 3< , 200 kg / m 3< , 150 kg / m 3< or 100 kg / m 3< , with possible (independent) lower limits of, for example, at least 15 kg / m 3< , 20 kg / m 3< or 25 kg / m 3< .

[0021] In a preferred embodiment, the casting body covers the casing pipe at the top before the upper section of the casting body is removed. In other words, the casting body forms a cover that is removed when the upper section is removed. Alternatively, a separate cover could generally be provided and placed on the casting body, e.g., glued. The casing pipe is thus reliably and clearly protected (simple visual inspection) against the ingress of contaminants during the shell construction phase.

[0022] In a preferred embodiment, the casing pipe and the casting body are cast into the floor element without the mounting attachment, meaning the latter is only added subsequently. The casting body and the casing pipe form or are part of a shell component that is structurally integrated during the casting of the floor element. The mounting attachment is then only added subsequently, once the casting material of the floor element has hardened, typically during the cable installation. Prior to this, the upper section of the casting body is removed.

[0023] In general, the pipe socket (of the mounting attachment) can also be pushed onto the casing pipe during the "attachment" to the casing pipe; preferably, the attachment is to be understood as an insertion (the inserted pipe socket can advantageously also extend downwards beyond the base body in the casing pipe).

[0024] In general, however, the feedthrough can also be cast into the floor element together with the mounting attachment. The mounting attachment is already arranged on the casting body, but not yet in the mounting position. It can be arranged above the mounting position during casting and then moved downwards into the mounting position. In this context in particular, it is also conceivable that the upper section of the casting body is not separated or cut off separately, but is removed more or less automatically when the mounting attachment is moved downwards into the mounting position. In particular, if the casting body is designed as a comparatively thin-walled sleeve, e.g. made of expanded polystyrene, the upper section could simply be broken if the mounting attachment is moved downwards.Preferably, however, the upper section is separated on site using a separating process, in particular by cutting, for example with a knife.

[0025] The mounting attachment has a downward-facing pipe socket which, in the installed position, sits on the casing pipe of the penetration. In principle, a pipe socket pushed onto the casing pipe is also conceivable; preferably, the pipe socket is pushed into the casing pipe in the installed position. The pipe socket and the casing pipe are preferably sealed against one another, preferably with a seal arranged at the upper end of the casing pipe and / or a seal arranged at the lower end of the pipe socket (preferably with both). Towards the interior of the building, this duct is then preferably closed off with the aforementioned seal between the mounting attachment and the pipe. If the corresponding section is not initially occupied, the duct can be closed off with a blind plug.

[0026] In a preferred embodiment, the feedthrough additionally has a base body on which the casting body sits, i.e., the base body is arranged below the casting body. The base body can, for example, increase the stability of the feedthrough before / during casting or also serve to relatively fix different components of the feedthrough. If, for example, several jacket pipes are provided, the base body can hold them together. In general, a metallic base body is also conceivable; a plastic part, in particular made of a hard plastic, in particular an injection-molded part, is preferred. The casting body and the base body are assembled; in the vertical direction, the two can be held together in a form-fitting and / or force-fitting manner. In particular, an adhesive connection is possible (also in combination with a form-fitting connection), which can also create a certain degree of sealing (e.g., against the penetration of concrete slurry).

[0027] In general, it is also conceivable for the base body itself to form the jacket tube or a section thereof, i.e., to be shaped with a hose-like extension. Preferably, however, the base body and the jacket tube are assembled parts. In principle, the jacket tube could also be held in the casting body itself, e.g., in a form-fitting manner (e.g., latched) or glued in. Preferably, however, the base body serves for relative fixation, namely, the casting body is placed on top and the jacket tube is attached from below, in particular, inserted through a base part of the base body. The jacket tube is preferably held in a form-fitting manner (latched) on the base body.

[0028] The base body preferably forms a cavity that is open at the top, i.e. it has a base part and a side wall. More preferably, the casing pipe extends from below into this cavity. The upper end of the casing pipe is above the base part, but preferably below the upper end of the side wall. The casing pipe can thus be reliably inserted and is easily accessible, but on the other hand does not have to be cut to length even if, in exceptional cases, the entire casting body is removed. The side wall of the base body preferably forms a collar that encloses the casting body on the outside. The side wall is preferably shaped with a step on which the casting body sits. The collar is then arranged on this step and encloses it on the outside.The inner volume (cavity) of the feedthrough is then defined solely by the side wall in a lower area and solely by the encapsulated body in an upper area; the step marks the transition. Generally, the encapsulated body could also rest on a base section of the base body, for example, so that the entire side wall forms a collar. The collar is generally advantageous in terms of stability, as it holds the encapsulated body in place during positioning of the feedthrough and during encapsulation.

[0029] In general, a base body with a side wall is preferably cast into a base plate such that its upper edge is at the upper end of the side wall. The upper end of the side wall should be offset vertically by no more than 5 cm, 4 cm, 3 cm, or 2 cm from the upper edge, for example. Particularly preferably, the upper end is at the same height as the upper edge, i.e., flush, within the limits of technically acceptable accuracy.

[0030] In a preferred embodiment, the mounting attachment is or is screwed to the base body in the mounting position. It can be brought into the mounting position, preferably by screwing, into contact with the surface of the floor element. For example, a thread can be cut into the base body, or a corresponding insert can be inserted or molded into it, such as a threaded sleeve or nut. Overall, the relative fixation of the mounting attachment and base body can be advantageous, especially with regard to pull-out protection.

[0031] As already mentioned, in a preferred embodiment, the bushing has a mounting device for positioning and aligning prior to grouting. The mounting device can, for example, comprise a ground spike or stand that is placed in the excavated trench. The casing pipe and the grouting body are suspended from this, preferably via another, height-adjustable stand section.

[0032] The penetration is positioned at the desired height before pouring, using the top edge of the floor slab as a reference. Before pouring the floor slab, its thickness or height and thus the position of the top edge is usually known, in contrast to the thickness of the floor structure that will later be built on top of it. In the case of a base body with a side wall (see above), its upper end is preferably positioned at the level of the top edge of the floor slab (flush). The grouting material of the floor slab then encloses the base body including the side wall, but not the grouting body. The grouting body is then enclosed solely by the screed or the remaining floor structure, which can represent less mechanical stress.

[0033] In a preferred embodiment, a flange is provided on the base body of the feedthrough, which, once cast into the floor slab, lies flush with the upper edge of the floor slab. Before casting, the flange can therefore also be used, for example, to adjust the feedthrough to the correct height. The flange can protrude outwards from the base body by at least 2 cm, preferably at least 3 cm or 4 cm (possible upper limits can be, for example, a maximum of 30 cm, 20 cm or 15 cm). Before the floor structure is created, a surface seal is preferably worked onto the flange, i.e. a surface seal on the floor slab. This is preferably a vapor barrier, which is laid on the floor slab, for example in the form of a film. This film can then be attached to the flange, preferably glued.

[0034] The feedthrough preferably has a plurality of jacket pipes, i.e., at least 2, preferably at least 3. Possible upper limits (independent of this) are, for example, a maximum of 6 or 5 jacket pipes; particularly preferably, 4 jacket pipes are provided. Each section is then assigned its own jacket pipe, whereby the electrical / data sections can also be combined. In a preferred embodiment, the jacket pipes are or are assembled with the base body of the feedthrough (see also above). The base body holds the jacket pipes in a relative position to one another; these can, in particular, be inserted into its base part from below.

[0035] In a preferred embodiment, the bushing additionally has a holding part which is arranged beneath the base body and holds the jacket pipes in a relative position to one another. This can increase stability, for example, when adjusting the bushing before casting the base plate. The erection device (see above) can then be attached, for example, to the holding part and / or the base body, preferably to both. In principle, a holding part made of metal is also conceivable, for example made of bent sheet metal strips into which the jacket pipes can be clipped. However, the holding part is preferably made of a plastic material. Regardless of the material, it is preferably plate-shaped (flat extension in the horizontal direction), and the plate is penetrated by through-holes for the jacket pipes. The jacket pipes can be pushed into the plate, but the plate can also be split and assembled around the jacket pipes.

[0036] In a preferred embodiment, the retaining part is sealed against the casing pipes, for example, with sealing rings pushed onto the casing pipes or a seal molded onto the retaining part. The retaining part can then advantageously also serve as a water barrier flange.

[0037] In a preferred embodiment, the feedthrough with the holding part is adjusted so that the holding part rests on a fill before the floor slab is poured. A surface seal is then preferably applied to the fill or blind layer, i.e. below the subsequently poured floor slab, and worked onto the holding part. A plastic film is preferred as the surface seal, which is more preferably provided with a metal additive, such as aluminum. This arrangement can represent a radon seal (radon gas could be sucked through the building from the ground due to the chimney effect), whereby working onto the holding part in the area around the casing pipes ensures a reliable connection. Especially when there are a large number of casing pipes, the holding part simplifies the work considerably. For this purpose, the holding part is preferably designed as a plate; more preferably, it has an outwardly projecting flange.

[0038] In a preferred embodiment of the feedthrough with multiple jacket pipes, the casting body is provided with a bracing element inside. This element stabilizes the laterally opposing outer wall sections of the casting body. However, the bracing leaves passages that are vertically aligned with the jacket pipes. If the mounting attachment is installed with a pipe socket, the bracing element in the lower section of the casting body does not need to be removed first.

[0039] As already mentioned, the penetration is preferably installed in a floor element comprising a floor slab and a floor structure. The floor slab is poured onto the ground, usually on a special underlay or fill, in particular on a blinding layer. Concrete is the preferred casting material. The floor structure is then built on top of the floor slab, which defines the subfloor and functionally forms the foundation of the building. The floor structure can, in particular, include a screed layer; additional layers, such as thermal insulation and / or underfloor heating, are optional. Typically, a floor covering forms the upper finish (e.g., tiles, etc.). In any case, the penetration is cast into the floor slab and usually into a screed layer; the other layers are generally not cast layers.When we talk about pouring into the floor element, this means pouring into at least one layer of it (the floor slab).

[0040] Also intended to be disclosed is a method for assembling a bushing, which results from the features of the use according to claim 1, preferably in combination with one or more of the dependent claims. Likewise, a method for producing a floor element with a floor panel and floor structure thereon is intended to be disclosed, which results from the features of the use according to claim 1, preferably in combination with one or more of the dependent claims. Short description of the drawings

[0041] In the following, the invention is explained in more detail using an exemplary embodiment, whereby the individual features within the scope of the independent claims can also be essential to the invention in other combinations and no distinction is made in detail between the different claim categories.

[0042] In detail, Figure 1 shows a feedthrough for pouring in an oblique view from below; Figure 2 shows the feedthrough according to Figure 1 in a side view in an installation situation; Figure 3 the adaptation of the casting body of the feedthrough to the height of the floor structure in a schematic representation; Figure 4 the base body without casting body in an oblique view from above; Figure 5 a mounting attachment with pipe socket subsequently attached from above in a side view; Figure 6 the casting body without base body in an oblique view from below. Preferred embodiment of the invention

[0043] Figure 1shows a bushing 1 in an oblique view from below. The bushing 1 has four jacket tubes 2, which are inserted from below into a base body 3. The upper ends of the jacket tubes 2 lie vertically within the base body 3, compare also Figure 4 For illustration purposes. Below the base body 3, multi-web seals (not shown here) are arranged on the outside of the casing pipe 2. A potting body 4, which is made of expanded polypropylene, is arranged on the base body 3. The potting body 4 is box-shaped, having four side walls and a lid formed integrally therewith, wherein Figure 1 only two side walls are visible. Figure 2shows the penetration 1 in an installation situation; a trench 21 has been excavated in the ground 20. Above this trench, the floor slab will later be poured and the building will be erected. The penetration 1 is set up with a mounting device 22, in this case a height-adjustable ground spike, at such a height that the upper end of the base body 3 coincides with the upper edge 23 of the subsequently cast floor slab. A protective pipe 24 is connected to each of the casing pipes 2 (one of which is sketched), which

[0044] Protective pipes 24 run in the trench 21 to a junction at the road.

[0045] After filling the trench 21, the base plate 30 is concreted, see Figure 3. On the floor slab 30, from its upper edge 23 upwards, a floor structure 31 (screed, etc.) is applied. Its upper edge 32 is the upper edge of the floor element 23 (which consists of the floor slab 30 and the floor structure 31). The base body 3 sits in the floor slab 31, the casting body 4 in the floor structure 31, but an upper section 4.1 protrudes (only the lower section 4.2 is enclosed laterally by the floor structure 31). During further assembly, the upper section 4.1 is severed, e.g., with a knife. This makes the interior of the base body 3 accessible (only a circumferential side wall of the casting body 4 remains, see also Figure 6 for illustration.

[0046] Figure 4shows the feedthrough in a view from above, without the casting body. The jacket pipes 2 are inserted into the base body 3 from below, and by removing the upper section 4.1 of the casting body 4, they are accessible from above. From above, the Figure 5 The mounting attachment 50 shown is inserted. This has a flange plate 51 on which downwardly extending pipe sockets 52 are arranged. Each of the pipe sockets 52 is inserted into a respective casing pipe 2 and is sealed against it with a seal (not shown here). The mounting plate 51 sits on the upper edge 32 of the floor structure 31.

[0047] The actual line 53 can then be laid through each of the four pipe systems (consisting of jacket pipe, pipe socket and protective pipe) and sealed against the mounting attachment 50.

[0048] Figure 6shows only the potting body 4 in a view from below, i.e., it is the underside of the lid, and two side walls can also be seen from the inside. In a variant not shown here, webs can also run between the elongated side walls, forming a brace to stabilize the side walls.

Claims

1. Use of a lead-through (1) for molding into a floor element (33) and leading through a line (53), which lead-through (1) has a jacket tube (2) and a molding body (4), which are molded into the floor element (33) in such a way that the jacket tube (2) extends below the molding body (4) and an upper portion (4.1) of the molding body (4) projects beyond an upper edge (32) of the floor element (33), wherein, after the molding, the upper portion (4.1) of the molding body (4) is removed and a mounting attachment (50) with a pipe socket (52) is positioned in a mounting position relative to the jacket tube (2), characterized in that the molding body (4) is provided from a foamed plastic material.

2. Use according to claim 1, in which the foamed plastic material of the molding body (4) is expanded polypropylene.

3. Use according to claim 1 or 2, in which the molding body (4), before the upper portion (4.1) is removed therefrom, covers the jacket tube (2) towards the top.

4. Use according to any one of the preceding claims, in which the mounting attachment (50) is placed against the lead-through (1) only after the jacket tube (2) and the molding body (4) have been molded.

5. Use according to any one of the preceding claims, in which the lead-through (1) has a base body (3) onto which the molding body (4) is placed, wherein a side wall of the base body (3) forms a collar which surrounds the molding body (4) towards the outside.

6. Use according to any one of the preceding claims, in which the lead-through (1) has a base body (3) with a side wall, wherein the lead-through (1) is molded into a floor plate (30) of the floor element (33) at such a height that an upper edge (32) of the floor plate (30) lies at the upper end of the side wall.

7. Use according to any one of the preceding claims, in which the lead-through (1) has a base body (3), wherein the mounting attachment (50) is fastened to the base body (3) in the mounting position.

8. Use according to any one of the preceding claims, in which the lead-through (1) has a base body (3) and a raising device (22) with which the lead-through (1) is placed relative to the ground (20) before the molding of the floor element (33), wherein the raising device (22) is fastened to the base body (3).

9. Use according to any one of the preceding claims, in which the lead-through has a base body (3), wherein a flange is provided on the base body (3), wherein the lead-through (1) is molded into a floor plate (30) of the floor element (33) at such a height that the flange lies flush with an upper edge (32) of the floor plate (30), wherein, before a floor structure (31) is created, a surface seal is worked onto the flange on the floor plate (30).

10. Use according to any one of the preceding claims, in which the lead-through (1) has a base body (3) and a plurality of jacket tubes (2) which are assembled with the base body (3) and are held by the latter in a position relative to one another.

11. Use according to claim 10, in which the lead-through (1) additionally has a holding part (6) which is arranged below the base body (3) and holds the jacket tubes (2) in a position relative to one another.

12. Use according to claim 11, in which the holding part (6) is sealed with respect to the jacket tubes (2).

13. Use according to any one of the preceding claims, in which the lead-through (1) has a plurality of jacket tubes (2) and the molding body (4) is formed in its interior with a strut which stabilizes mutually opposite outer wall regions of the molding body (4) relative to one another, but in the process leaves free passages in the molding body (4) which are aligned vertically with the jacket tubes (2).

14. Use according to any one of the preceding claims, in which the floor element (33) comprises a floor plate (30) and a floor structure (31), wherein an upper edge (32) of the floor structure (31) forms the upper edge (32) of the floor element (33).