Closure for a wall element or floor element

Abstract

The invention relates to the use of a closure (1), the closure (1) having an elastomer body (10) and the elastomer body (10) being an additively manufactured part and having a cavity (50), for sealing a wall element or floor element (2) of a building.

Description

[0001] Closure for a wall or floor element

[0002] The present invention relates to a closure for sealing against a wall or floor element and / or against a pipe.

[0003] In some versions, the closure has an elastomer body for sealing purposes. This can, for example, be pushed axially into an opening in the wall or floor element. The closure or elastomer body can create a seal both against the wall or floor element and against a pipe passing through the opening. For this purpose, the elastomer body can be provided with a through-opening through which the pipe is laid. By clamping or pressing, the elastomer body can then, for example, form a radial inward seal against the pipe and a radial outward seal against a reveal bordering the opening in the wall or floor element, e.g. the reveal of a core drill hole or a concreted-in casing. This is intended to illustrate a typical application environment.

[0004] The present invention is based on the technical problem of providing an advantageous closure for sealing against a wall or floor element or a pipe.

[0005] This is achieved with the closure according to claim 1. As explained in detail below, the closure body can, on the one hand, be an elastomer body, which can, for example, be produced additively or assembled from elastomer body parts. Alternatively, however, the closure body can also be formed (partially) from a harder material. Specifically, an elastomer part can form a jacket wall of the closure body, whereas a comparatively harder pressed body forms an end wall.

[0006] Regardless of this detailed design variation, the closure body is preferably provided with an interior in all variants, i.e., with a hollow or empty space within it. The interior can, for example, reduce the material requirements and also the weight, which can be advantageous with regard to transport, etc. A conventional closure body, in particular an elastomer body, is cut from a comparatively thick plate, for example, and is therefore a solid body with a comparatively high weight, especially since there may be offcuts.

[0007] If the elastomer body is constructed generatively, i.e., if it is or is being constructed layer by layer from a previously formless or form-neutral material based on a computer model, production may be somewhat more complex. However, due to the geometric design freedom, the elastomer body and its interior can be designed in such a way that the advantages realized with the new geometry outweigh the disadvantages (e.g., reduced material requirements or waste, reduced weight, or even a possible "additional function"; see below for details).

[0008] The interior of the closure body, in particular of the elastomer body, can, in contrast to a through-opening for the line, be closed axially on both sides, e.g. at least over one area. The interior therefore does not necessarily have to be hermetically sealed; there can, for example, be an opening or openings for the discharge of non-solidified material. Furthermore, there can also be one or more injection openings, e.g. if the interior is pressurized with a fluid or injection material for assembly of the closure (see details below). In summary, there can also be points in the interior where it is open on one axial side, but conversely there can be at least one area in which the interior is closed in both axial directions.

[0009] In other words, the interior space is delimited axially on both sides by an end wall of the closure body, in particular an elastomer body, at least in certain regions. As discussed in detail below, an outer casing wall can enclose the interior space radially outwards, whereby in the case of a closure body, in particular an elastomer body, with a through-opening for the line, there can also be an inner casing wall (which delimits the interior space radially inwards). The reference to the “closure body” or “elastomer body” relates, for example, to a one-piece, coherent part which, being constructed from the layers, cannot be separated without destruction. In general, in the context of the present disclosure, the terms “axial”, “radial” or “circumferential” and the associated directions (“axial direction” etc.) refer, for example, to a longitudinal axis of the opening in the wall or base element or to an axis around which, for example,an outer shell wall surface of the outer shell wall is at least rotationally or in particular rotationally symmetrical.

[0010] In general, however, the term "radial" does not necessarily imply a circular shape; the closure body, in particular an elastomer body, can also have a polygonal, in particular rectangular, outer shape in cross-section (and can be inserted into a frame, for example, together with other "block-shaped" closure bodies, in particular elastomer bodies); alternatively or additionally, the cable, for example, can also have an outer shape that deviates from a circular shape, e.g., in the case of a flat cable. A circular geometry can nevertheless be preferred, i.e., the radially outer surface of the outer jacket wall and / or the radially inner surface of the jacket wall can have a circular shape in a section perpendicular to the axial direction.

[0011] The closure body, in particular the elastomer body, can, for example, be smaller in the axial direction than in the radial direction. Its axial length, measured between the end faces, can, for example, amount to a maximum of 90%, 80%, 70%, 60%, or 50% of its radial diameter (with possible lower limits of, for example, 5% or 10%). In other words, the closure body / elastomer body can have a relatively flat disc shape. Reference to a "diameter" does not necessarily imply a circular shape, but is generally to be interpreted as an average of the smallest and largest dimensions, which, in the preferred case of a circular shape, corresponds to the diameter of the circle. The interior space can represent a coherent, fluidically connected volume, or it can be subdivided into several separate, separate volumes (see, for example, the "cavity" variants discussed below).Relative to the external volume of the closure body, in particular the elastomer body, which is taken, for example, axially between its end faces and radially outward to the outer surface, subtracting a through-hole for the line (if present), the volume of the interior space can be, for example, at least 5%, 10%, 20%, 30%, 40%, or 50% (with possible upper limits of, for example, a maximum of 90% or 80%). Specifically, the volume content can also depend on the function or use of the interior space, for example, on the type of bracing of the closure body, in particular the elastomer body.

[0012] The "elastomer material" of the elastomer body, elastomer part, or elastomer body part is generally a plastic with elastic properties. Its Shore hardness (Shore A) can be, for example, a maximum of 90 Shore, 80 Shore, 75 Shore, or 70 Shore, and (independently of this) a minimum of 20 Shore, 25 Shore, or 30 Shore. It can be, for example, a polymerized resin (see in particular the comments on stereolithography), but also a thermoplastic elastomer (TPE) or a silicone-based material, e.g., silicone elastomer.

[0013] In a preferred embodiment, the interior space is provided in such a way that the closure body, in particular the elastomer body, can be expanded more easily radially than axially. In other words, the structure of the closure body, in particular the elastomer body, which delimits or penetrates the interior space is provided in such a way that radial expansion can be achieved more easily than axial expansion under the action of an internal and / or external force. With the radial expansion, the closure body, in particular the elastomer body, lies in sealing contact, for example with its outer casing wall surface against a reveal delimiting the opening and / or with its inner casing wall surface against the line. Because the internal structure of the closure body, in particular the elastomer body, promotes expansion in this direction, the force required to apply the necessary pressing force during clamping can be lower, which can, for example,This can also allow for finer adjustment of the contact force or prevent damage (e.g., to the cable). For this purpose, the internal structure of the closure body, particularly the elastomer body, can provide, for example, more and / or stronger connections between the end walls than, for example, between the inner and outer jacket walls.

[0014] According to a preferred embodiment, the closure body, in particular an elastomer body, has an axial strut that extends axially through the interior. In general, it does not necessarily have to be parallel to the axial direction, but can, for example, also be inclined in the radial and / or circumferential direction. Compared to the other directions, however, the extension of the axial strut has, for example, at least the largest portion in the axial direction, and it is particularly preferably parallel to it. Independent of its individual orientation / alignment, the axial strut can, on the one hand, be rod-shaped, i.e., essentially extend one-dimensionally. On the other hand, it can, for example, also have a lamellar shape, for example, being provided as a wall penetrating or dividing the interior. Viewed in a section perpendicular to the axis, the rod-shaped strut can be essentially point-shaped, whereas the lamellar strut can describe a linear shape.

[0015] Irrespective of these details, the axial strut is part of the closure body, in particular the elastomer body, and is therefore, for example, constructed generatively together with the remaining closure body, in particular the elastomer body (or otherwise manufactured integrally or monolithically therewith). Preferably, a plurality of such axial struts can be provided distributed over the interior, for example distributed in the circumferential and / or radial direction. In the context of this disclosure, "a" and "an" are to be read as indefinite articles and thus always as "at least one" or "at least one" unless expressly stated otherwise. The closure body, in particular the elastomer body, can therefore, for example, also be provided with multiple through-openings, i.e., be designed for the passage of multiple lines.

[0016] The axial strut(s) is / are preferably connected by its two axial ends to an end wall of the closure body, in particular the elastomer body. Specifically, the respective axial strut extends into an inner wall surface of the respective end wall, which inner wall surface axially delimits the interior space.

[0017] According to a preferred embodiment, the axial strut extends between its two axial ends, with which it is connected to the respective end wall, without being connected to a casing wall of the closure body, in particular the elastomer body. The axial strut is therefore not connected to the outer casing wall and, if present, also not to any inner casing wall that delimits a through-opening for the line. If a plurality of struts are provided, this criterion can be met, for example, for at least the majority of the struts, i.e., for at least 60%, 70%, or 80% of the struts (100% is also possible).

[0018] The embodiments discussed above relate to all closure body variants, whereas the following variants primarily concern the elastomer body variant. In the latter case, the elastomer body itself forms the interior, i.e., this is a hollow space within the elastomer body. In other words, the elastomer body can define the hollow space radially and axially.

[0019] As mentioned at the beginning, such an elastomer body can be produced by additive manufacturing, i.e. by selectively solidifying a previously formless or neutral material layer by layer. Alternatively, the elastomer body can also be assembled from several elastomer body parts that are previously manufactured separately and then joined together. The individual elastomer body parts can be manufactured in a conventional manner, such as by pressing into a mold or injection molding. In this way, too, if the elastomer body is subdivided into elastomer body parts with one or more parting planes, complex geometries with undercuts, etc. can be produced. Accordingly, all of the following embodiments relating to geometric details of the interior can be of interest for the elastomer body, regardless of whether it is manufactured additively or by assembling parts.

[0020] According to a preferred embodiment, the interior space has a circumferential cavity. This cavity can preferably be circumferentially self-contained, i.e., form a circumferential, fluidically coherent volume. The elastomer body preferably has a through-opening for a line, with the cavity extending circumferentially around this opening (in the case of multiple through-openings, preferably around this plurality). The circumferential cavity can preferably be used to brace or press the elastomer body, namely, to apply pressure so that the outer jacket wall surface is pressed outward and, if present, the inner jacket wall surface is pressed radially inward.

[0021] Pressurization can be achieved, for example, by introducing a gas, a liquid, or an injection material; see below for details. The interior space can then not only save material and weight, but also, alternatively or additionally, provide a different form of bracing (pressure application from the inside rather than the outside).

[0022] According to a preferred embodiment, an outer intermediate space is provided radially between the circumferential cavity and the outer shell wall surface and / or an inner intermediate space is provided radially between the circumferential cavity and the inner shell wall surface. The intermediate space(s) are also part of the interior space, but are radially offset from the circumferential cavity. The intermediate space(s) can be used, for example, to adjust the radial pressing force or to reduce the amount of fluid required for clamping, see below for details. According to a preferred embodiment, the elastomer body comprises a radial strut which is generatively constructed in one piece with the rest of the elastomer body. The radial strut extends radially through a respective intermediate space, i.e. through the inner or outer intermediate space.In general, it can also have a certain tilt relative to the corresponding radial direction or, preferably, lie parallel to it. Preferably, there are a plurality of radial struts distributed throughout the respective intermediate space, for example, at least 4, 8, or 12 radial struts, allowing a pressing force to be transmitted evenly radially inward or outward (the number of radial struts can also depend on the size of the elastomer body; possible upper limits per intermediate space can be, for example, 500, 400, 300, or 200 radial struts). To promote its radial expansion, the circumferential cavity can, for example, be provided with a smaller number of radial struts compared to a respective intermediate space; preferably, it has no radial bracing at all.

[0023] In a preferred embodiment, the circumferential cavity and a respective intermediate space are fluidically decoupled, meaning they do not form a contiguous volume. For example, when pressurized with a low-viscosity gas or liquid, only the circumferential cavity needs to be filled with it, reducing the amount of fluid required for clamping. However, with a viscous injection material as the fluid, despite a certain fluidic connection, essentially only the circumferential cavity can be filled if the curing injection material effectively seals the connection itself.

[0024] According to a preferred embodiment, the cavity comprises a chamber structure. This can comprise multiple chambers, i.e., sub-volumes that are still fluidly connected to one another. For this purpose, each chamber can, for example, be enclosed by elastomer body material over the majority of its outer circumference, but not completely. By maintaining connecting channels between the individual chambers, for example, unsolidified material can be drained during additive manufacturing and / or a pressure distribution can be adjusted, for example, during clamping (for example, a desired direction can be specified for expanding injection material).

[0025] In a preferred embodiment, the construction direction of the elastomer body is tilted relative to the axial direction, e.g., by at least 5° or 10° and no more than 45° or 35°. In the construction direction, for example, the individual layers are arranged consecutively, so each layer is perpendicular to the construction direction. The tilt relative to the axial direction can be advantageous, for example, in that the portion to be consolidated per layer on the end face is not too large.

[0026] According to a preferred embodiment, a stiffening element is provided in at least one end wall of the elastomer body, in particular integrated into the elastomer material. It can, for example, be surrounded by the elastomer material during additive manufacturing or, for example, be overmolded as an insert during injection molding. The stiffening element is made of a harder material than the elastomer body, e.g., metal or preferably hard plastic (see the definition below).

[0027] According to a preferred embodiment, the closure has a pressed body on at least one end face of the elastomer body. This pressed body can be made of a material that is harder than the elastomer body, for example, a material with a higher Shore hardness. The pressed body can protect the end face (e.g., against insect damage) and / or stabilize it, for example, preventing axial bulging. The pressed body can be made of a hard plastic, for example, or generally also of metal. A "hard plastic," for example, can have a Shore hardness (D) of at least 50 Shore, 60 Shore, or 70 Shore, with possible upper limits of 85 Shore or 80 Shore, respectively. Possible materials include acrylonitrile butadiene styrene (ABS) or polypropylene (PP).

[0028] Regardless of the specific material, a compression body can also be arranged on each of the two axially opposite end faces of the elastomer body, generally regardless of the axial relative clamping capability of the opposing compression bodies. Even if the compression bodies are arranged statically at a defined relative distance from each other (i.e., they are not moved toward each other for clamping), they can then counteract, for example, an axial expansion of the elastomer body if the clamping force is applied by fluid pressure to the interior.

[0029] In a preferred embodiment, the pressed body is also a generatively constructed part, preferably it is constructed in one piece with the elastomer body.

[0030] According to a preferred embodiment, the pressed body is part of a clamping device with a clamping bolt, wherein the pressed body can be clamped by tightening the clamping bolt. In general, the clamping bolt can, for example, also be arranged radially outside the elastomer body and, for example, be screwed opposite the wall or floor element. The clamping bolt preferably extends at least into the elastomer body, where it can generally engage, for example, in an integrated nut. Particularly preferably, it passes through the elastomer body and is operatively connected to another pressed body arranged on the opposite end face of the elastomer body. By tightening the clamping bolt, the pressed bodies can then be moved towards one another and the elastomer body can thus be axially compressed so that it contacts the reveal in a radially outward sealing manner and, in the case of a through opening, in a radially inward sealing manner against the line.

[0031] According to a preferred embodiment, the elastomer body has an injection opening, via which at least part of the interior space can be or is pressurized with a fluid to press the elastomer body against it. The latter can be, for example, a gas or a liquid, in particular also injection material. The fluid can be supplied to the entire interior space or just a part of it, for example, the circumferential cavity discussed above. The invention also relates to a manufacturing method in which the elastomer body is constructed generatively. This can be done, for example, in a stereolithography process, which is fundamentally based on selective or targeted polymerization. For this purpose, a liquid resin can be provided, which is selectively solidified layer by layer by irradiation in certain areas, for example by UV irradiation. The irradiation can, for example,with a laser, whereby the laser beam can then be used to scan the area to be irradiated for each layer. As an alternative to stereolithography, production can also be carried out, for example, by polymer printing or by selective joining or bonding, such as in a powder-binder process, or by selective application of thermally activated phases (fused layer manufacturing).

[0032] Furthermore, the invention relates to a use of the closure for sealing against a wall or floor element and / or against a line. The wall or floor element can be, for example, a building wall or a building floor, in particular an external building wall or a floor slab of the building, i.e. a foundation slab. The term "building" can also include technical buildings, e.g. transformer stations or the like. Irrespective of these details, the wall or floor element can be made of stone or, in particular, concrete, for example, whereby the opening then sealed with the closure can be drilled or cut or can be kept free during the manufacture of the wall or floor element, for example can be formed by a casing pipe or a bushing.

[0033] The line can be the media-carrying line itself or, for example, a conduit in which the actual line is or is laid. A media-carrying line can be, for example, a pipe, for example, for water, district heating, or gas, or a cable, for example, for electrical or data transmission.

[0034] According to a preferred embodiment, the elastomer body is clamped by tightening a clamping bolt. This can, in particular, interact with a pressed body or pressed bodies (see above), but alternatively, it can also be part of a radial clamping device. This can, for example, be placed in a frame together with several elastomer bodies, each with a polygonal or rectangular cross-section, and then pressed radially against the stacked or adjacent elastomer bodies.

[0035] According to a preferred embodiment, the elastomer body is clamped by introducing a fluid into at least part of the interior space; see the above comments for details. After introducing the fluid, an injection nozzle can be closed (e.g., by clamping it shut). Likewise, the fluid can be introduced, for example, via a valve, which then automatically closes the interior space.

[0036] In a preferred embodiment, the fluid is an injection material that hardens after injection. It may therefore be flowable upon injection, but its flowability decreases after injection. This curing can occur, for example, in response to temperature or as a result of a reaction with another component, such as in the case of a two-component material, such as a polyurethane-based material. Regardless of these details, the application of the fluid and clamping with clamping bolts can represent alternatives or even be combined.

[0037] The variants with a generatively constructed elastomer body can also be summarized in the following aspects:

[0038] 1. Closure (1) for sealing against a wall or floor element (2) and / or against a line (3), with an elastomer body (10), wherein the elastomer body (10) is a generatively constructed part and is preferably provided with an interior space (50).

[0039] 2. Closure (1) according to aspect 1, in which the interior space (50) is provided in such a way that the elastomer body (10) can be expanded more easily radially than axially. Closure (1) according to one of the preceding aspects, in which the elastomer body (10) has an axial strut (25) which extends axially through the interior space (50). Closure (1) according to aspect 3, in which the axial strut (25) is connected by its two axial ends to an end wall (11 a, b) of the elastomer body (10). Closure (1) according to aspect 4, in which the axial strut (25) extends between its two axial ends without being connected to a jacket wall (15, 16) of the elastomer body (10). Closure (1) according to one of the preceding aspects, in which the interior space (50) is provided with a circumferential cavity (55).Closure (1) according to aspect 6, in which the interior space (50) comprises an outer intermediate space (57) which is arranged radially between the circumferential cavity (55) and an outer jacket wall surface (16.2). Closure (1) according to aspect 6 or 7, in which the elastomer body (10) has a through-opening (9) for the passage of a line (3), wherein the interior space (50) comprises an inner intermediate space (56) which is arranged radially between the circumferential cavity (55) and an inner jacket wall surface (15.1). Closure (1) according to aspect 7 or 8, in which the elastomer body (10) has a radial strut (26, 27) which extends radially through the outer intermediate space (57) and / or the inner intermediate space (56). Closure (1) according to one of aspects 7 to 9, in which the circumferential cavity (55) is fluidically decoupled from the outer intermediate space (56) and / or the inner intermediate space (56).Closure (1) according to one of the preceding aspects, in which the interior (50) comprises a chamber structure (60), namely a plurality of chambers (61), which are still fluidically connected to one another. Closure (1) according to one of the preceding aspects, in which a construction direction (300) of the elastomer body (10) is tilted relative to an axial direction. Closure (1) according to one of the preceding aspects, in which a pressed body (105a, b) made of a material that is harder than the elastomer body (10) is provided on at least one end face (10a, b) of the elastomer body (10). Closure (1) according to aspect 13, in which the pressed body (105a, b) is also a generatively constructed part, in particular is constructed integrally with the elastomer body (10).Closure (1) according to aspect 13 or 14, in which the pressed body (105a, b) is part of a clamping device (100) with a clamping bolt (106), and the pressed body (105a, b) and thus the elastomer body (10) can be clamped by tightening the clamping bolt (106). Closure (1) according to one of the preceding aspects, in which the elastomer body (10) has an injection opening (45) via which at least part of the interior (50) can be pressurized with a fluid in order to press the elastomer body (10) against it. 17. Method for producing a closure (1) according to one of the preceding aspects, in which the elastomer body (10) is constructed generatively.

[0040] 18. Use of a closure (1) according to one of aspects 1 to 16 for sealing against a wall or floor element (2) and / or against a line (3).

[0041] 19. Use according to aspect 18, wherein the elastomer body (10) is clamped by tightening a clamping bolt (106).

[0042] 20. Use according to aspect 18 or 19, wherein the elastomer body (10) is tensioned by introducing a fluid into at least part of the interior space (50).

[0043] 21 . Use according to aspect 20, wherein the fluid is an injection material which hardens after introduction into at least part of the interior space (50).

[0044] Below, closure body variants are discussed in which an elastomer part and a comparatively harder pressed body together form the closure body, i.e. the interior is (also) limited by the harder pressed body.

[0045] The interior space can be advantageous, for example, with regard to the mounting options for the closure body, which can be pressed into place by applying pressure to the interior. Alternatively or additionally, the interior space can also be of interest for weight reasons, for example, reducing transport costs for large quantities.

[0046] In the variant discussed below, the closure body comprises an elastomer part made of elastomer material (see the definition above). This elastomer part can be constructed additively or, preferably, manufactured using a molding process, such as by compression molding or injection molding. Regardless of these details, the closure body additionally comprises a molded body made of a harder material than the elastomer part.

[0047] In a preferred embodiment, the compact axially defines the interior space, meaning it is not attached to an end wall from the outside (unlike the above variants). In other words, the harder compact forms the axial end wall of the closure body, whereas the inner and / or outer shell wall is / are formed by (an) elastomer part(s). This allows, for example, the deformation characteristic described above to be achieved, such as greater radial than axial expansion.

[0048] In general, the pressed body(s) can also be made of metal, for example. However, a hard plastic is preferred; see the above definition and possible material details. Preferably, the pressed body(s) are provided as injection-molded parts.

[0049] Viewed in the axial direction, the pressed body can have a shape corresponding to the opening in the wall or base element, for example, generally polygonal (e.g., rectangular) or, in particular, round, preferably circular. Furthermore, if the closure is designed for the passage of a line, a through-opening can be provided in the pressed body (an elastomer part can be arranged in this opening, see below). As mentioned above, the closure can also be designed for multiple lines, meaning there can be multiple through-openings.

[0050] According to a preferred embodiment, both end faces of the closure body are each formed by a pressed body made of a material that is harder than the elastomer part, i.e. the interior is preferably delimited axially on both sides by a pressed body. To distinguish them, these pressed bodies are also referred to below as front and rear pressed bodies; the front pressed body can then delimit the interior in one axial direction and the rear pressed body in the opposite axial direction. The elastomer part can form an outer casing wall of the closure body, i.e. can be pressed or sealed against a reveal during assembly. However, it can also form an inner casing wall, i.e. be arranged in a through-opening of the pressed body(ies) and seal or be pressed against the line.

[0051] In general, a variant is also conceivable in which only an inner elastomer part is provided, with the closure body being sealed to the wall or floor element by other means, for example, by directly applying filler material to the interior. However, there is preferably at least one elastomer part forming the outer shell wall, particularly preferably in combination with another elastomer part forming an inner shell wall.

[0052] In general, the pressed bodies are preferably fixed in their relative position, preferably even beyond their mounting on the elastomer part. In other words, the elastomer part alone can generally provide relative positioning of the pressed bodies, but preferably there is an additional positioning means.

[0053] In a preferred embodiment, the pressed bodies are connected to one another via a strut, which is preferably made of a hard plastic. A total of several or a plurality of struts can be provided, via which the pressed bodies are connected to one another. Express reference is made to the above information regarding possible shapes; the respective strut(s) can be designed, for example, as a rod or wall-like structure.

[0054] In a preferred embodiment, the strut(s) is / are made of the same material as at least one of the pressed bodies, preferably hard plastic. Preferably, they are / are formed monolithically with one of the pressed bodies, i.e., from the same continuous material. The strut can be monolithic with the pressed body, either entirely or just an axial section. In the latter case, the adjacent axial section of the strut can be formed monolithically with the other pressed body (i.e., a dividing plane can pass through the strut; see below for details).

[0055] Regardless of the exact position of the parting plane, the pressed bodies can preferably be connected to each other. This can be achieved by a form-fitting connection, i.e., with an axial undercut (e.g., by locking). Alternatively or additionally, a material-to-material connection is possible; the pressed body parts can be welded together, for example, by friction or ultrasonic welding; adhesive bonding is also possible.

[0056] The same applies to the attachment of the elastomer part to the pressed bodies; it can be glued or vulcanized, for example. Preferably, the elastomer part is held axially in a form-fitting manner on the pressed body(s), thus encompassing the pressed body(s). Viewed axially, the elastomer part then forms, for example, a radially inwardly projecting collar whose inner diameter is smaller than the outer diameter of the respective pressed body.

[0057] Preferably, the elastomer part, whether inner or outer, is additionally held in a radially positive-locking manner, i.e., there is also an undercut in the radial direction. For this purpose, an axially protruding collar can be formed on the respective pressed body, for example, at its radially outer end, which engages in a complementary groove in the elastomer part.

[0058] In the preferred embodiment, which relates to the inner elastomer part (which forms the inner casing wall), this elastomer part has a collar that projects radially outwards. This can be continuous, although this is not mandatory (which also applies to the collars discussed above). The collar serves for fastening or relative positioning to the pressed body; for example, it can lie against the side surface thereof facing the interior and / or be integrally connected to it (e.g. vulcanized or glued). The inner elastomer part preferably has a front and a rear collar, wherein the front collar lies against / is fastened to the front pressed body and the rear collar lies against / is fastened to the rear pressed body. In general, the collar(s) canThe collars can also be arranged outside the interior (on the outer end wall surface), but an arrangement in the interior (on the inner end wall surface) is preferred.

[0059] In a preferred embodiment, an injection opening is provided in at least one compact, through which the interior is accessible. This can be used for pressurization, but alternatively or additionally, pressure measurement is also possible. A valve insert can be arranged in the injection opening, which serves, for example, as a connection and / or contains a check valve and / or has an actuatable closure function (e.g., a screw cap).

[0060] In a preferred production process, the closure body with the elastomer part and the molded part are manufactured separately and then assembled. The molded part(s) are preferably injection-molded. The elastomer part(s) can also be injection-molded (e.g., from TPE), but alternatively, production as an extrusion is also possible (which is then formed into a ring shape and the ends are joined together, e.g., glued).

[0061] According to a preferred embodiment, the pressed bodies are manufactured separately, particularly preferably as injection-molded parts. They are then assembled and preferably bonded to one another, particularly by a material and / or form-fitting connection. Combinations are also possible; a form-fitting connection, for example, can determine the correct assembly position, in which the form-fitting connection then hardens (e.g., an adhesive).

[0062] With regard to a preferred installation of the closure body in a wall or floor element, explicit reference is made to the above disclosure. The variants with a closure body made of an elastomer part and pressed body(s) can also be summarized in the following aspects:

[0063] 1 . Closure for sealing against a wall or floor element and / or against a pipe, with a closure body, wherein the closure body is provided with an interior space.

[0064] 2. Closure according to aspect 1, wherein the closure body has an elastomer part which forms at least one outer jacket wall of the closure body or at least one inner jacket wall of the closure body.

[0065] 3. Closure according to aspect 2, in which at least one end wall of the closure body is formed by a pressed body made of a material which is harder than the elastomer part.

[0066] 4. Closure according to aspect 3, in which the compact axially delimits the interior space.

[0067] 5. Closure according to one of the preceding aspects, in which both end walls of the closure body are each formed by a pressed body made of a material which is harder than the elastomer part, wherein the pressed bodies are preferably connected to one another via a strut which extends through the interior.

[0068] 6. Closure according to aspect 5, wherein the strut is formed from the same material as at least one of the pressed bodies, preferably is monolithic with the at least one pressed body.

[0069] 7. Closure according to one of aspects 2 to 6, in which both end walls of the closure body are each formed by a pressed body made of a harder material than the elastomer part, wherein the elastomer part forms at least the outer jacket wall of the closure. Closure according to aspect 7, in which the elastomer part sits positively and / or non-positively on at least one of the pressed bodies, preferably viewed in an axial section forming an axial and / or radial positive connection with the at least one pressed body. Closure according to one of aspects 2 to 6, in which both end walls of the closure body are each formed by a pressed body made of a harder material than the elastomer part, wherein the elastomer part forms at least the inner jacket wall of the closure.Closure according to aspect 9, in which the elastomer part has a radially projecting collar which rests against at least one of the pressed bodies and / or is integrally connected thereto. Closure according to one of aspects 3 to 10, in which at least one pressed body has an injection opening via which at least part of the interior can be pressurized with a fluid in order to press the elastomer part on. Method for producing a closure according to one of aspects 3 to 11, in which the elastomer part and the at least one pressed body are produced separately and then assembled. Method according to aspect 12 for producing a closure according to one of aspects 5 to 8, wherein the pressed bodies are produced separately and then assembled; the elastomer part is assembled with the pressed bodies. 14. Method according to aspect 13, in which the pressed bodies are integrally connected to one another and / or reinforced with one another.

[0070] 15. Use of a closure according to any one of aspects 1 to 14 for sealing against a wall or floor element and / or against a pipe.

[0071] 16. Use according to aspect 15, in which the closure body is clamped by introducing a fluid into at least part of the interior, in particular the elastomer part is pressed radially outwards or inwards.

[0072] 17. Use according to aspect 16, wherein the fluid is an injection material which hardens after introduction into at least part of the interior space.

[0073] Overall, various closure body variants, which can then concern both designs with an elastomer body (e.g. manufactured additively or from assembled parts) and designs with an elastomer part and pressed bodies, can be summarized in the following aspects:

[0074] 1. Closure (1) for sealing against a wall or floor element (2) and / or against a line (3), with a closure body (600), wherein the closure body (600) is provided with an interior space (50).

[0075] 2. Closure (1) according to aspect 1, in which the interior space (50) is provided in such a way that the closure body (600) can be expanded more easily radially than axially.

[0076] 3. Closure (1) according to one of the preceding aspects, in which the closure body (600) has an axial strut (25, 625) which extends axially through the interior (50). Closure (1) according to aspect 3, in which the axial strut (25) is connected by its two axial ends to an end wall (11 a, b) of the closure body (600). Closure (1) according to aspect 4, in which the axial strut (25) extends between its two axial ends without being connected to a jacket wall (15, 16) of the closure body (600). Closure (1) according to one of the preceding aspects, in which the closure body (600) is an elastomer body (10). Closure (1) according to aspect 6, in which the elastomer body (10) is a generatively constructed part. Closure (1) according to aspect 7, in which a construction direction (300) of the elastomer body (10) is tilted to an axial direction.Closure (1) according to aspect 6, in which the elastomer body (10) is composed of a first elastomer body part (10.1) and a second elastomer body part (10.11). Closure (1) according to one of aspects 6 to 9, in which the interior space (50) is provided with a circumferential cavity (55). Closure (1) according to aspect 10, in which the interior space (50) comprises an outer intermediate space (57) which is arranged radially between the circumferential cavity (55) and an outer jacket wall surface (16.2). Closure (1) according to aspect 10 or 11, in which the elastomer body (10) has a through-opening (9) for the passage of a line (3), wherein the interior space (50) comprises an inner intermediate space (56) which is arranged radially between the circumferential cavity (55) and an inner jacket wall surface (15.1).Closure (1) according to aspect 11 or 12, in which the elastomer body (10) has a radial strut (26, 27) which extends radially through the outer intermediate space (57) and / or the inner intermediate space (56). Closure (1) according to one of aspects 11 to 13, in which the circumferential cavity (55) is fluidically decoupled from the outer intermediate space (56) and / or the inner intermediate space (56). Closure (1) according to one of aspects 6 to 14, in which the interior space (50) comprises a chamber structure (60), namely a plurality of chambers (61), which are still fluidically connected to one another. Closure (1) according to one of aspects 6 to 15, in which a stiffening element (505a, 505b) made of a harder material than the elastomer body (10) is provided in at least one end wall (11a, b) of the elastomer body (10).Closure (1) according to one of aspects 6 to 16, in which a pressed body (105a, b) made of a harder material than the elastomer body (10) is provided on at least one end face (10a, b) of the elastomer body (10). Closure (1) according to aspect 17, in which the pressed body (105a, b) is also a generatively constructed part, in particular constructed integrally with the elastomer body (10). Closure (1) according to aspect 17 or 18, in which the pressed body (105a, b) is part of a clamping device (100) with a clamping bolt (106), and the pressed body (105a, b) and thus the elastomer body (10) can be clamped by tightening the clamping bolt (106). Closure (1) according to one of aspects 6 to 19, in which the elastomer body (10) has an injection opening (45) via which at least a part of the interior (50) can be acted upon with a fluid in order to press the elastomer body (10) against it.Closure (1) according to one of aspects 1 to 5, in which the closure body (600) has an elastomer part (610, 710) and a pressed body (620, 620a, 620b), wherein the elastomer part (610, 710) forms at least one outer jacket wall (16) of the closure body (600) or at least one inner jacket wall (15) of the closure body (600), and wherein the pressed body (620, 620a, 620b) axially delimits the interior space (50). Closure (1) according to aspect 21, in which both end walls (11a, 11b) of the closure body (600) are each formed by a pressed body (620, 620a, 620b), and an outer elastomer part (610) forms the outer jacket wall (16) of the closure (1), and an inner elastomer part (710) forms the inner jacket wall (15) of the closure (1). A method for producing a closure (1) according to any one of aspects 6 to 20, excluding aspect 9, in which the elastomer body (10) is constructed generatively.Use of a closure (1) according to one of aspects 1 to 22 for sealing against a wall or floor element (2) and / or against a line (3). Use according to aspect 24 of a closure (1) according to one of aspects 6 to 20, in which the elastomer body (10) is clamped by tightening a clamping bolt (106). 26. Use according to aspect 24 or 25, in which the closure body (600), in particular the elastomer body (10), is clamped by introducing a fluid into at least part of the interior space (50).

[0077] 27. Use according to aspect 26, wherein the fluid is an injection material which hardens after introduction into at least part of the interior space (50).

[0078] In the following, the invention is explained in more detail using exemplary embodiments, whereby no distinction is made in detail between the different claim categories.

[0079] In detail,

[0080] Figure 1 shows a closure with an elastomer body in an opening in a wall or floor element through which a line passes;

[0081] Figure 2 shows a closure with an elastomer body and a clamping device alternative to Figure 1;

[0082] Figure 3 shows a further closure with an elastomer body, in a modified embodiment to Figure 2;

[0083] Figure 4a shows a first elastomer body in a sectional side view (longitudinal section);

[0084] Figure 4b shows the first elastomer body in a section perpendicular to the axis;

[0085] Figure 5a shows a second elastomer body in a sectioned side view (longitudinal section);

[0086] Figure 5b shows the second elastomer body in a perpendicular section;

[0087] Figure 6a shows a third elastomer body in a sectioned side view (longitudinal section);

[0088] Figure 6b shows the third elastomer body in a perpendicular section;

[0089] Figure 7 shows a schematic representation of a method for producing one of the elastomer bodies of Figures 4a-6b; Figure 8 shows an elastomer body in an axial section, which is also provided with an interior space, but was produced alternatively;

[0090] Figure 9 shows an intermediate step in the production of the elastomer body according to Figure 8;

[0091] Figure 10 shows an intermediate step in the production of an elastomer body which is additionally equipped with stiffening elements;

[0092] Figure 11 shows a part of the elastomer body according to Figure 10 in an axial view;

[0093] Figure 12 shows a closure constructed from pressed bodies and an elastomer part in an axial section;

[0094] Figure 13 shows a closure which, in comparison to Figure 12, has a further elastomer part and forms a through opening.

[0095] Figure 1 shows a closure 1 for sealing against a wall or floor element 2 and against a pipe 3. The closure 1, which is designed as a so-called press seal in Figure 1, is inserted into an opening 5 in the wall or floor element 2 and seals radially outwards against a reveal 2.1 radially delimiting the opening 5 and radially inwards against an outer wall surface 3.1 of the pipe 3. For this purpose, the closure 1 has an elastomer body 10 and a tensioning device 100 with which the elastomer body 10 can be axially compressed and consequently radially pressed.

[0096] The elastomer body 10 is a generatively constructed part, i.e., built up layer by layer from a previously formless or neutral material, see below for details. The elastomer body 10 is constructed with an interior space 50, i.e., it has a hollow space within it. This space can be filled with unsolidified material during production, which is then emptied at the end of the generative construction through an opening (not shown here), which is then closed. In the present example, the interior space 50 is positioned relatively closer to the line 3 than to the reveal 2.1, which can, for example, reduce the contact force acting on the line 3 (and, for example, prevent damage to a sensitive line 3).In the variant according to Figure 1, the clamping device 100 has a pressing body 105a, 105b on each end face 10a, b of the elastomer body 10, as well as a clamping bolt 106 connecting the pressing bodies 105a, 105b to one another. By tightening the clamping bolt 106, the pressing bodies 105a, b can be moved axially toward one another, and the elastomer body 10 can thus be axially compressed and thus radially pressed. As can be seen from the sectional view, there can be several clamping bolts distributed around the circumference, and the pressing bodies 10a, b can also be segmented around the circumference (not shown or visible in Figure 1).

[0097] Figure 2 also shows a closure 1 with an elastomer body 10, on whose end faces 10a, b a pressing body 105a, b is arranged. These pressing bodies 105a, b are also connected to one another via bolts 107, but unlike Figure 1, they are arranged in a static arrangement. The bolt 107 thus defines a defined axial spacing between the pressing bodies 105a, b, while the contact force is achieved by applying pressure to the interior space 50.

[0098] For this purpose, the clamping device 100 has a pressurizing means 120, shown schematically here, which is connected to an injection opening 45 of the elastomer body 10 via a connecting piece 125. The pressurizing means 120 can be, for example, a pump, via which a defined overpressure can be set in the interior space 50. Alternatively, however, the pressurizing means 120 can also be, for example, a gas cartridge (not shown here), which can be connected via the connecting piece 125 and then activated, e.g., by breaking open a predetermined breaking point.

[0099] As an alternative to pressurizing with air or gas, a liquid can generally also be introduced into the interior space 50. Regardless of the fluid in detail, the connection piece 125 can be provided, for example, in the form of a one-way valve, which then automatically closes the pressurized interior space 50. Another possibility for pressurizing consists in the introduction of an injection material that is still flowable upon introduction but hardens in the interior space 50. For this purpose, for example, a two-component material, such as a resin or polyurethane-based material, can be provided, the components of which are brought together immediately before introduction into the interior space 50 and then harden in the interior space 50.

[0100] Compared to Figure 1, the interior space 50 of Figure 2 has a larger volume in relation to the elastomer body 10. However, structures not shown in the schematic representation according to Figure 2 may be present in the interior space 50, see below in detail.

[0101] This also applies to the elastomer body 10 of the closure 1 according to Figure 3, on whose end faces 10a, 10b no pressed bodies 105a, 105b are arranged. However, the interior 50 of the elastomer body 10 is traversed by a structure 20, indicated only schematically here, which causes a directed deformation of the elastomer body 10 when pressure is applied to the interior 50. The structure 20 creates a stronger connection between the two end walls 11a, 11b of the elastomer body 10 than between the inner jacket wall 15, which forms the through-opening 9 for the line 3, and the outer jacket wall 16, whose outer jacket wall surface 16.2 is pressed against the reveal of the opening 5 (not shown here).

[0102] Figure 4a shows one possible design for an elastomer body 10 with an internal structure 20 in detail. Shown is a sectional side view, wherein the sectional plane includes an axis 200 around which the outer jacket wall surface 16.2 is rotationally symmetrical (representation analogous to Figures 1-3). The elastomer body 10 has a plurality of axial struts 25 that pass through the interior 50, wherein in Figure 4a some of the axial struts 25 are shown in section and others in side view. The axial struts 25 are each connected to the end walls 11a, 11b, but not to the jacket walls 15, 16. Accordingly, the axial expansion is limited and the radial expansion is promoted. Figure 4b shows the same elastomer body 10, wherein the sectional plane in this case is perpendicular to the axis 200. The view thus falls axially into the interior 50, and the individual axial struts 25 can be seen as essentially point-shaped when cut.Alternatively, a respective axial strut 25 could, for example, also have an elongated shape in the section, such as an elliptical or linear shape, thus extending in a lamella-like manner between the end walls 11 a, b.

[0103] In the section according to Figure 4b, the inner and outer casing walls 15, 16 can also be seen as walls that are each closed in the circumferential direction 201. The front end wall 11a shown in Figure 4a is not visible in Figure 4b; the focus is on the rear end wall 11b. In general, within the scope of the present disclosure, the same reference numerals designate the same parts or parts with a comparable function, and reference is therefore always made to the description of the respective other figures.

[0104] Figure 5a shows an elastomer body 10 in a sectional side view similar to Figure 4a. The interior space 50 in this case is subdivided, comprising, on the one hand, a circumferentially enclosed cavity 55, whereby reference is also made below to the axially perpendicular section according to Figure 5b for illustration. In addition to the cavity 55, the interior space 50 comprises an inner intermediate space 56 and an outer intermediate space 57.

[0105] With respect to the radial directions 202 perpendicular to the axis 200 (shown in Figure 5a), the inner intermediate space 56 is arranged between the inner shell wall surface 15.1 and the cavity 55, and the outer intermediate space 57 is arranged between the cavity 55 and the outer shell wall surface 16.2. The intermediate spaces 56, 57 are fluidically decoupled from the cavity 55; when pressure is applied to the cavity 55 with a fluid, the fluid does not enter the intermediate spaces 56, 57. To transmit the contact pressure radially inward and radially outward, a plurality of radial struts 26, 27 each pass through the respective intermediate space 56, 57. These, like the axial struts 25 in Figures 4a, b, are constructed in one piece with the rest of the elastomer body, i.e., during the generative production process, they are constructed from the same elastomer material.

[0106] In the variant according to Figure 6a, the interior space 50 of the elastomer body 10 comprises a chamber structure 60, namely a plurality of chambers 61. These are connected to one another via connecting channels 62, both axially (cf. the axially parallel section according to Figure 6a) and in the circumferential direction 201 (cf. the axially perpendicular section according to Figure 6b). Since the chambers 62 are also connected circumferentially, they likewise form a circumferential cavity 55 (which also applies to Fig. 4a / 4b). Furthermore, the variant according to Figures 6a, b also has an inner intermediate space 56 and an outer intermediate space 57. However, in contrast to the variant according to Figures 5a, b, these intermediate spaces 56, 57 are not fluidically decoupled from the circumferential cavity 55 or the chamber structure 60, but are connected to it via radial channels 63.

[0107] Figure 7 schematically illustrates one possibility for producing an elastomer body 10 discussed here. The elastomer body 10 is constructed on a build platform 310, which can be raised and lowered relative to a tray 315. The tray 315 is filled with a liquid resin, which cures under the influence of UV radiation. The UV irradiation occurs through the transparent tray bottom, whereby the irradiation unit 325 is shown only schematically here. It comprises a laser source 326 and a tiltably mounted mirror 327. With the latter, the laser beam 330 can be moved in a scanning manner across the tray bottom, i.e., across the lowered build platform 310 or the part of the elastomer body 10 that has already been constructed at a given time. The resin 320 polymerizes and solidifies only where UV irradiation occurs.

[0108] The elastomer body 10 is built layer by layer, i.e., sequentially from layers 10.1-10.3. The first layer 10.1 rests on the build platform 310, with the build platform then being raised slightly after selective solidification within the first layer 10.1. Subsequently, the second layer 10.2 is built up before the build platform 310 is raised again for the third layer 10.3, and so on. In the present schematic representation, a build direction 300, in which the layers 10.1-10.3 follow one another, is parallel to the axial direction of the elastomer body 10. However, it is preferably arranged tilted relative to its axis 200 (see the schematic sketch), so that the elastomer body 10 sits slightly tilted on the build platform 310.

[0109] In detail, the construction is carried out using a computer model 400 of the elastomer body 10, which is divided into individual layers (slicing) to generate the control signals 330 for the production device 350, resulting in the area to be solidified and thus irradiated in each layer 10.1 - 10.3.

[0110] Figure 8 shows an elastomer body 10, which is also provided with an interior space 50. An axial section is shown, with axis 200 thus lying in the section plane. The illustrated elastomer body 10 is intended for a blind closure, namely for closing an opening without a cable. Alternatively, however, it could also be provided with a through-opening, for example, analogous to Figures 4a, b, additionally having an inner jacket wall (which forms a through-opening for the cable to pass through).

[0111] In the assembled state, the elastomer body 10, with its outer shell wall 16, specifically its outer shell wall surface 16.2, forms a sealing fit against a reveal defining the opening (not shown here; see Figure 1 for illustration). The elastomer body 10 can be assembled, for example, analogously to Figure 1, by clamping press bodies arranged at the front, i.e., axially compressed and consequently radially pressed. Alternatively, the interior space 50 can also be pressurized with a fluid; see Figures 2 and 3 with the associated description.

[0112] The interior space 50 is formed as a continuous whole; however, in Figure 8, the sectional plane runs through several axial struts 25. In the present example, these are each rod-shaped, i.e., viewed axially, they are point-shaped, see Figure 4b. Alternatively, the axial struts 25 can also be provided with a certain extension in the circumferential direction, i.e., in the form of walls.

[0113] The elastomer body 10 according to Figure 8 is not constructed additively from the elastomer material, but rather consists of a first elastomer body part 10.1 and a second elastomer body part 10.11 (see also Figure 9 for illustration). The first elastomer body part 10.1 forms the front end wall 11a. The second elastomer body part 10.11 forms the rear end wall 11b, but also the outer shell wall 16 and the axial struts 25. However, the second elastomer body part 10.2 is open away from the rear end wall 11b, which is why it can be manufactured using a molding process. This is preferably done by injection molding, e.g., from TPE.

[0114] The first elastomer body part 10.1 can also be manufactured using a molding process (pressing into a mold or injection molding), but it can also be cut out as a disc from a sheet-like elastomer. Regardless of these details, the elastomer body parts 10.1, 10.11 are manufactured separately and then joined together, e.g., glued. This is schematically illustrated in Figure 9 by an adhesive layer 500 applied to the first elastomer body part 10.1.

[0115] Figure 10 shows an elastomer body 10 or elastomer body parts 10.1, 10.11; in this respect, reference is also made to the above description. In Figure 10, however, additional stiffening elements 505a, 505b are arranged in the end walls 11a, 11b. These are enclosed by the elastomer material; they can be overmolded, for example, as inserts during the production of the elastomer body parts 10.1, 10.11. Figure 11 shows the first elastomer body part 10.1 in an axial view and illustrates the shape of the stiffening element 505a (embedded in the elastomer material, therefore shown in dotted lines). Instead of the star shape, a lattice or net shape would also be possible; alternatively, the stiffening element 505a can also be designed as a continuous plate (e.g., circular). Regardless of the individual shape, the stiffening elements 505a, 505b, which are provided, for example, from a hard plastic, can stabilize the end walls 11a, 11b.Thus, for example, when the interior space 50 is subjected to a fluid, the deformation can be directed primarily to the shell wall or walls, thus a higher pressure can be built up radially.

[0116] Figure 12 shows a closure 1 whose closure body 600 is not, or not exclusively, constructed of elastomer material. Nevertheless, the closure body 600 forms an interior space 50 that can be pressurized with a fluid for assembly of the closure 1. See the above description for details.

[0117] The closure body 600 has an elastomer part 610, which forms an outer casing wall 16. With this or the outer casing wall surface 16.2, the closure body 600 rests against a reveal defining the opening during assembly (see Figures 2 and 3 with the associated description). Furthermore, the closure body 600 has compression bodies 620, in the present example, a front compression body 620a and a rear compression body 620b.

[0118] The pressed bodies 620 are made of a harder material than the elastomer part 610, in this example of hard plastic (e.g., ABS). The pressed bodies 620 axially delimit the interior space 50 and additionally support the elastomer part 610. The front pressed body 620a forms the front end wall 11a of the closure body 600, and the rear pressed body 620b forms the rear end wall 11b. Struts 625, which in this case are also made of hard plastic, extend through the interior space 50. Regarding a possible shape, reference is made to the above description of the elastomer struts; the hard plastic struts can be rod-shaped or wall-like, etc.

[0119] In the exemplary embodiment according to Figure 12, the struts 625 are formed monolithically with the rear pressed body 620b; the component can be manufactured as an injection-molded part. The same applies analogously to the front pressed body 620a. After injection molding, the pressed bodies 620 are assembled and connected to one another, for example, by means of a material bond. This can be done, for example, by ultrasonic welding or adhesive bonding. As an alternative to the illustration shown, an axially centrally arranged parting plane is also possible; the two pressed bodies 620 can then be manufactured using the same mold.

[0120] The elastomer part 610 is or will be pulled onto the assembled pressed bodies 620, i.e., slightly expanded radially, and then axially positioned. As can be seen from the axial section according to Figure 12 (axis 200 lies in the section plane), the elastomer part 610 is held axially positively on the pressed bodies 620, i.e., with an undercut relative to the axial direction. Furthermore, an axially protruding collar 621a, 621b is formed on the radially outer, circumferential ends of the pressed bodies 620, each of which engages in a complementary groove in the elastomer part 610. This additionally creates a radial positive fit.

[0121] The interior space 50 is accessible via an injection opening 645, which is presently formed in the rear press body 620b. A valve insert 650 is arranged in the injection opening 645, via which, for example, a pressurizing means can be connected, e.g., a pump or cartridge gun (see above). However, the valve insert 650 can also be used for pressure measurement to check the correct pressurization of the interior space 50. The valve body 650 can be constructed more complexly than shown here, e.g., it can have a check valve and / or a closure.

[0122] Figure 13 shows another closure 1 with a closure body 600, which is fundamentally comparable to that shown in Figure 12 (in this respect, reference is made to the above description). However, the closure body 600 shown in Figure 13 is not designed as a blind closure, but rather for passing a line (not shown). Thus, the closure body 600 forms a through-opening 9. A further elastomer part 710 is provided for this purpose, forming an inner jacket wall 15 that delimits the through-opening 9.

[0123] During assembly, the line can be routed through the through-hole 9; it can be guided with some play and / or coated with a lubricant. When the interior space 50 is subsequently pressurized with a fluid, the casing wall 15 is pressed toward the line. The inner casing wall surface 15.1 forms a sealing contact with the line. At the same time, the outer casing wall 16 is pressed radially outward against a reveal (see the detail above).

[0124] The elastomer part 710 has a front collar 711a and a rear collar 711b. These collars 711a, 711b rest on the inside of the respective press body 620a, 620b. The collars 711a, 711b can be pressed into the sealing system, for example, solely by applying pressure to the interior space 50; alternatively or additionally, a material connection is also possible.

Claims

Claims 1 . Use of a closure (1), which closure (1) has an elastomer body (10), wherein the elastomer body (10) is a generatively constructed part and is provided with an interior space (50), for sealing against a wall or floor element (2) of a building.

2. Use according to claim 1, wherein the interior space (50) is provided in such a way that the elastomer body (10) can be expanded more easily radially than axially.

3. Use according to one of the preceding claims, wherein the elastomer body (10) has an axial strut (25) which extends axially through the interior space (50).

4. Use according to claim 3, wherein the axial strut (25) is connected with its two axial ends to an end wall (11 a, b) of the elastomer body (10).

5. Use according to claim 4, wherein the axial strut (25) extends between its two axial ends without being connected to a jacket wall (15, 16) of the elastomer body (10).

6. Use according to one of the preceding claims, wherein the interior space (50) is provided with a circumferential cavity (55).

7. Use according to claim 6, wherein the interior space (50) comprises an outer intermediate space (57) which is arranged radially between the circumferential cavity (55) and an outer jacket wall surface (16.2).

8. Use according to claim 6 or 7, wherein the elastomer body (10) has a through-opening (9) for passing a line (3), wherein the interior space (50) comprises an inner intermediate space (56) which is arranged radially between the circumferential cavity (55) and an inner jacket wall surface (15.1).

9. Use according to claim 7 or 8, wherein the elastomer body (10) has a radial strut (26, 27) which extends radially through the outer space (57) and / or the inner space (56).

10. Use according to one of claims 7 to 9, wherein the circumferential cavity (55) is fluidically decoupled from the outer intermediate space (56) and / or the inner intermediate space (56).

11. Use according to one of the preceding claims, wherein the interior (50) comprises a chamber structure (60), namely a plurality of chambers (61), which are, however, still fluidically connected to one another.

12. Use according to one of the preceding claims, wherein a construction direction (300) of the elastomer body (10) is tilted to an axial direction.

13. Use according to one of the preceding claims, in which a pressed body (105a, b) made of a harder material than the elastomer body (10) is provided on at least one end face (10a, b) of the elastomer body (10).

14. Use according to claim 13, wherein the pressed body (105a, b) is also a generatively constructed part, in particular constructed in one piece with the elastomer body (10).

15. Use according to claim 13 or 14, wherein the pressing body (105a, b) is part of a clamping device (100) with a clamping bolt (106) and the pressing body (105a, b) and thus the elastomer body (10) can be clamped by tightening the clamping bolt (106).

16. Use according to one of the preceding claims, wherein the elastomer body (10) has an injection opening (45) via which at least a part of the interior space (50) can be pressurized with a fluid in order to press the elastomer body (10) against it.

17. Use according to one of the preceding claims for sealing against a pipe (3) laid through the wall or floor element (2).

18. Use according to one of the preceding claims, wherein the elastomer body (10) is clamped by tightening a clamping bolt (106).

19. Use according to one of the preceding claims, wherein the elastomer body (10) is tensioned by introducing a fluid into at least part of the interior space (50).

20. Use according to claim 19, wherein the fluid is an injection material which hardens after being introduced into at least part of the interior space (50).

21. A method for producing a closure (1) for use according to one of the preceding claims, in which the elastomer body (10) is constructed generatively.

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