• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A shuttering insert (1) is used to provide a recess (A) in a building structure (G) cast from concrete, the shuttering insert (1) having a shuttering housing (2) with a top wall (3) and a top wall (3) adjoining and around the top wall (3) encompassing side wall (4), the top wall (3) and the side wall (4) defining a cavity (5), wherein in the top wall (3) at least one extends through the top wall (3) along a The opening (6) extending through the central axis (M) is arranged, or wherein break edges (23) are arranged in the top wall (3), along which a part of the top wall (3) can be broken out, in such a way that a central axis (M) through the top wall (3) extending breakthrough can be created. Furthermore, the formwork insert (1) has at least one assembly element (28) that can be cast into the building structure (G), which assembly element (28) is held on the formwork housing (2) in a precisely positioned manner and can be separated from the formwork housing (2), so that when the formwork housing is removed (2) the formwork housing (2) can be separated from the assembly element (28) from the building structure, and / or the formwork housing (2) has at least one marking element (29) for providing a marking on the concrete-poured building structure (G).
    公开号:CH715856B1
    申请号:CH01640/19
    申请日:2019-12-18
    公开日:2020-08-14
    发明作者:Baggenstos Roger
    申请人:Geberit Int Ag；
    IPC主号:
    专利说明:

    TECHNICAL AREA
    The present invention relates to a formwork liner for keeping a recess in a building structure, such as a concrete wall, a concrete floor or a concrete ceiling, in the area of a pipe penetration through the building structure according to the preamble of claim 1.
    STATE OF THE ART
    From CH 687 101 a formwork insert is known which keeps one end of a piece of pipe to be concreted into a floor or wall. The shuttering insert is attached to a shuttering board, the cavity of the shuttering insert being directed towards the shuttering board. When the concrete is then poured, the liquid concrete cannot flow into the formwork insert, as a result of which a cavity or a recess can be provided in the building structure.
    A disadvantage arises from the lack of further functionality of the formwork insert. The formwork insert essentially serves to provide a recess. From the practice of installers, the desire for formwork insert with improved functions has often been expressed.
    DISCLOSURE OF THE INVENTION
    Based on this prior art, the invention is based on an object of specifying a shuttering insert which overcomes the disadvantages of the prior art. In particular, the formwork insert should be designed in such a way that it can be used more efficiently and has further advantageous properties.
    This object is achieved by the subject matter of claim 1. Accordingly, a shuttering insert for providing a recess in a building structure cast from concrete encloses a shuttering housing with a top wall and a side wall adjoining the top wall and surrounding the top wall. The top wall and the side wall define a cavity. In the top wall there is at least one opening extending through the top wall along a central axis. Instead of the opening, break edges can be arranged in the top wall, along which a part of the top wall can be broken out, in such a way that an opening extending through the top wall along a central axis can be created. The formwork insert also has at least one assembly element that can be cast into the building structure and / or a marking element for providing a marking on the building structure cast from concrete. The at least one assembly element is held on the formwork housing in a precisely positioned manner and can be separated from the formwork housing such that the formwork housing can be separated from the assembly element when the formwork insert is removed from the building structure.
    The arrangement of the mounting element or the marking element has the advantage that elements are created on the formwork insert which can be used for the assembly of further elements in the recess. The assembly element can be poured directly into the concrete at the position specified by the formwork housing. In this respect, a correctly positioned mounting element is provided for the elements to be subsequently mounted in the recess. The marking element provides a marking which shows the installer of the following elements the correct position of fastening elements to be positioned, such as dowels and screws. The installer is therefore shown where a hole has to be drilled.
    A pipe section of a pipe or a fitting is typically passed through the opening. Before pouring the concrete, not only the formwork insert, but also the pipe or fitting is positioned accordingly. The pipe section is held in the opening.
    Opposite the top wall, the side wall ends with an end face which lies in one plane. With this end face, the formwork housing rests on a formwork board in use. The end face also surrounds said cavity.
    [0009] The mounting element preferably extends through a bearing opening in the top wall and is held in the bearing opening in a precisely positioned manner. A first section of the mounting element, which can also be referred to as a bearing section, accordingly protrudes over the top wall and a second section of the mounting element, which can also be referred to as a fastening section, protrudes into the cavity of the formwork housing. The first section is encased in concrete and the second section protrudes into the recess in the building structure.
    The mounting element preferably has a bearing portion which, when connected to the formwork housing, protrudes from the top wall opposite the cavity. The bearing section preferably has a retaining structure which provides a mechanical resistance in the cast-in state against a pull-out force acting on the mounting element. As an alternative or in addition, the bearing section has an anti-rotation structure that provides a mechanical resistance in the cast-in state against a rotary movement acting on the mounting element.
    The bearing section with the retaining structure and / or the anti-rotation structure has the advantage that the mounting element can be secured directly in the poured concrete against external forces acting on the mounting element.
    The retaining structure has at least one cone, the diameter of the cone increasing as the distance from the top wall increases. Other retaining structures, such as arm sections protruding laterally from a cylinder, are also conceivable. The anti-rotation structure is, for example, knurling. Other anti-rotation structures are also conceivable.
    Preferably, the mounting element has a fastening portion which, when connected to the formwork housing, protrudes from the top wall into the cavity and can be connected to a fastening element. The fastening element can be a separate component or it can be integrated into the formwork insert.
    Preferably, the mounting element is releasably secured to the formwork housing with the fastening element which cooperates with the fastening section.
    Preferably, an external element, such as a pipe bulkhead or a pipe clamp, is secured to the cast mounting element with the fastening element.
    Preferably, the mounting element has a sealing portion which, when connected to the formwork housing, lies in the region of the bearing opening and provides a seal between the bearing opening and the mounting element, such that when the concrete is poured, no concrete passes through the bearing opening into the cavity can arrive. The sealing section preferably lies between the fastening section and the mounting section.
    The sealing section is preferably slightly conical, so that the tightness can be maintained even with slight displacements to the formwork housing.
    Preferably, the at least one marking element is an elevation which extends away from the top wall opposite the cavity and which, after the concrete has been poured, leaves a recess in the concrete as a drilling mark.
    [0019] The formwork housing can have various basic shapes. A polygonal basic shape, such as a triangular or square basic shape, is preferred, with either a mounting element or a marking element preferably being arranged in each corner. The formwork housing can, however, have a circular cylindrical basic shape, with at least two assembly elements and / or marking elements being arranged in total, which are arranged distributed around the circumference at equal distances from one another.
    A negative structure is preferably arranged from the top wall on the side opposite the cavity in such a way that a positive structure is created in the cast concrete, which provides a guarantee element in the cast concrete. This makes it very easy to determine whether a correct formwork insert authorized by the manufacturer has been used.
    The formwork housing preferably has position markings in the area of the side wall. For example, notches and / or elevations provided as lines or points are provided.
    [0022] The shuttering insert further comprises an optional sleeve element with a central opening for receiving a pipe to be guided through the opening. The sleeve element extends circumferentially around the opening and extends at least partially into the opening along the central axis of the opening. The sleeve element is designed to be completely circumferential. The sleeve element has sound-absorbing and sealing properties.
    With the sleeve element, which is arranged between the formwork housing and the opening, sound transmission from the pipe to the formwork housing is prevented due to its design and a seal between the pipe and the formwork housing is provided so that liquid concrete is not between the pipe and the Breakthrough can get into the cavity. The sleeve element makes the formwork insert easier to use in a shorter time, because there is no need for the hardening foam. In addition, the cavity is not filled with the foam, which prevents it from being scratched out later. All in all, the formwork insert according to the invention can therefore be used more efficiently.
    [0024] The sleeve element is particularly preferably designed to be softer and / or more elastic than the formwork housing. As a result, the sleeve element lies against the outside of the pipe in a good sealing and sound-absorbing manner.
    [0025] The sleeve element preferably extends completely through the opening, viewed along the central axis. The sleeve element thus has an extension, seen in the direction of the central axis, which corresponds at least to the thickness of the top wall.
    The sleeve element particularly preferably extends from the top of the top wall over the top of the top wall. As an alternative or in addition to this, the sleeve element extends from the underside of the top wall over the underside of the top wall. In the latter case, the sleeve extends into the cavity of the formwork housing.
    The top wall is preferably a flat wall and the side wall is angled to this flat wall. The angle between the top wall and the side wall is 90 ° or greater.
    The sleeve element preferably comprises a circumferential groove on its outside into which the top wall protrudes. The groove width of the groove corresponds essentially to the thickness of the top wall or the groove width is greater or smaller than the thickness of the top wall. The sleeve element can be stored in the opening in the formwork housing via the groove.
    The sleeve element preferably has on its inside at least one circumferential sealing lip which can be placed against an outside surface of the pipe. Any gap between the outer surface of the pipe and the sleeve element is bridged over the sealing lip and a sealing point, particularly tight with respect to fluids and solids, can be provided between the pipe and the sleeve element.
    Preferably, the sealing lip extends from the inside into the central opening and reduces the diameter of the central opening. The clear width in the area of the sealing lip is then preferably smaller than the outer diameter of the pipe. The sealing lip is preferably oriented at an angle to the central axis. The sealing lip is particularly preferably oriented in such a way that it has a type of inlet section for the pipe and can be moved against the inside of the sleeve element when the pipe is pushed in.
    Alternatively, the sealing lip can also be dispensed with, in which case a circumferential contact between the outer surface of the pipe and the opening in the sleeve element must be ensured, so that a seal between the pipe and the sleeve is ensured. For this purpose, for example, planar contact can be provided between the inside of the sleeve element and the pipe, or there can be a circumferential bead on the inside which can be brought into contact with the pipe.
    Particularly preferably, the cuff element has a conically shaped inlet area, the diameter of which, viewed from the end face of the cuff element, decreases along the central axis with increasing distance from the end face. This conical inlet area preferably extends from the top of the top wall away from the top wall. This means that the string side is at a distance from the top.
    [0033] The sleeve element is particularly preferably designed to protrude over the top of the top wall with respect to its external shape. When viewed in cross section, the projection preferably has the shape of a concave recess extending around the central axis.
    Preferably, the sleeve element is molded onto the formwork housing. It is also possible to speak of an integral connection which can be produced, for example, using a two-component injection molding process. It is a non-releasable connection between the formwork housing and the sleeve element.
    Alternatively, the sleeve element can be mechanically connected to the formwork element. Preferably via a form fit or a force fit. Here, the sleeve element is releasably connected to the formwork housing.
    [0036] The sleeve element is preferably an elastomer body. The sleeve element made of ethylene-propylene-diene rubber (EPDM) is particularly preferred. In particular, the sleeve element has a hardness in the range from 50 to 70 IRHD, in particular 60 IRHD. IRHD (international rubber hardness degrees) is measured according to the ISO 48 standard. The sleeve element is preferably designed in one piece. The same can be said for the formwork housing.
    Seen in cross section, the sleeve element has the shape of a profile which extends around the opening.
    The opening preferably has a circular cross section. For use in a circular opening, the sleeve element is designed to be rotationally symmetrical with respect to a central axis.
    A building structure comprises a recess which is provided with a shuttering insert according to the above description, wherein the at least one mounting element is poured into concrete; and / or wherein a marking is provided in the concrete with the marking element.
    Preferably, the building structure further comprises a pipe bulkhead and a pipe, which pipe bulkhead can be placed in the recess, the pipe bulkhead being attached to the mounting element and surrounding the pipe section of the pipe that protrudes into the recess, and / or wherein the pipe bulkhead closes a fastener positioned at the location of the marking is attached.
    A method is used to provide a recess in a poured concrete building structure, wherein a form liner according to one of the preceding claims is positioned and fixed on a form board, wherein in a subsequent step concrete is poured around the form liner, and the form liner according to removed after the concrete has dried, the mounting element and / or the marking remaining on the building structure.
    [0042] Further embodiments are given in the dependent claims.
    BRIEF DESCRIPTION OF THE DRAWINGS
    Preferred embodiments of the invention are described below with reference to the drawings, which are only used for explanation and are not to be interpreted restrictively. In the drawings show:<tb> Fig. 1 <SEP> is a perspective view of a formwork insert according to a first embodiment from above;<tb> Fig. 2 <SEP> the formwork insert according to Figure 1 from below;<tb> Fig. 3 <SEP> is a perspective exploded view of the formwork insert according to FIG. 1 from above;<tb> Fig. 4 <SEP> a sectional view of a partial area of the formwork insert according to FIGS. 1 to 3;<tb> Fig. 5 <SEP> a perspective view of a formwork insert according to a second embodiment from above;<tb> Fig. 6 <SEP> the formwork insert according to FIG. 5 from below;<tb> Fig. 7 <SEP> the formwork insert according to FIGS. 1 to 4 mounted on a formwork board for the production of a building element;<tb> Fig. 8 <SEP> the formwork insert according to FIGS. 1 to 4 after the concrete has been poured;<tb> Fig. 9 <SEP> the building element after removing the formwork insert; and<tb> Fig. 10 <SEP> the building element according to FIG. 9 with a pipe bulkhead.
    DESCRIPTION OF PREFERRED EMBODIMENTS
    In Figures 1 to 4, a first embodiment of a shuttering insert 1 and in Figures 5 and 6, a second embodiment of a shuttering insert 1 is shown. The same parts have the same reference symbols. The formwork inserts are shown in Figures 1 to 6 in the non-installed state.
    The formwork insert 1 is used to provide a recess A or a cavity in the area of a pipe passage through a building structure G, such as a wall or a ceiling. For example, a pipe bulkhead or another component can be arranged in the recess. The building structure G is typically poured through liquid concrete.
    The formwork liner 1 according to both embodiments comprises a formwork housing 2 with a top wall 3 and a side wall 4 that is attached to the top wall 3 and encircles the top wall 3. The top wall 3 and the side wall 4 delimit or define a cavity 5. This cavity 5 essentially corresponds to the cavity in which the pipe bulkhead 40 comes to lie. The side wall 4 extends completely around the top wall 3. In other words, the side wall 4 runs along the delimiting edge of the top wall 3. The side wall 4 runs at an angle to the top wall 3. The angle bears the reference symbol α in FIG. 4 and is typically 90 ° or greater. The angle is particularly preferably approximately 91 ° to 95 °. The side wall 4 ends opposite the top wall 3 with an end face 25 which is flush with the building structure G in the installed state. Before it is cast with concrete, the formwork insert rests on a formwork board via the end face 25.
    In the first embodiment, an opening 6 is arranged in the top wall 3. The opening 6, which can also be referred to as an opening, has a circular cross section here. However, the cross section can also have a different shape. The shape of the opening preferably corresponds to the cross-sectional shape of the pipe. The opening 6 extends along a central axis M completely through the top wall 3 from its top 10 to the bottom 11. The opening 6 is delimited by a jacket surface 27 provided by the top wall 3. The tube 9 is guided through the top wall 3 into the cavity 5 via this opening 6.
    In the second embodiment, breaking edges 23 are arranged. A part of the top wall 3 can be broken out along these breaking edges 23, so that an opening can be created. It is of course also possible for the opening to be present in the second embodiment according to FIGS. 5 and 6 and the breaking edges in the first embodiment according to FIGS. 1 to 4.
    The formwork insert 1 according to the first embodiment comprises at least one mounting element 28 which can be cast into the building structure. In the embodiment shown, there are four mounting elements 28. The number of mounting elements 28 can also be larger or smaller, depending on the design. The at least one mounting element 28 is mounted on the formwork housing 2 in a precisely positioned manner and can be separated from the formwork housing 2. After the concrete has hardened, the formwork housing 2 can be separated from the concrete, the mounting elements 28 cast in the concrete also being separated from the formwork housing 2 and remaining on or in the cast concrete. In this way, a mounting element 28 can be fixed in a simple manner at the correct position, in particular with respect to the pipe lead-through which is defined by the opening 6.
    FIGS. 3 and 4 show that the mounting element 28 extends through a bearing opening 30 in the top wall 3 and is held in the bearing opening 30 in a precisely positioned manner. The bearing opening 30 extends through the top wall 3.
    The mounting element 28 has a bearing section 31. When connected to the formwork housing 2, the bearing section 31 extends away from the top wall 3 opposite the cavity 5 away from the top wall 3. The bearing section 31 is cast around by the concrete. The bearing section 31 preferably has a retaining structure 32 and / or an anti-rotation structure.
    The retaining structure 32 provides a mechanical resistance to a pull-out force acting on the mounting element 28. In the embodiment shown, the retaining structure 32 is thus formed as a cone 33, the diameter of which increases as the distance from the top wall 3 increases. The cone 33 here also has a cylindrical end region 41 which is arranged at the free end of the cone 33 and further increases the diameter.
    The anti-rotation structure is not shown in the figures. The anti-rotation structure provides a resistance against twisting of the mounting element 28.
    The mounting element 28 also has a fastening section 34 which, when connected to the formwork housing 2, protrudes from the top wall 3 into the cavity 5. After the shuttering housing has been removed, the fastening section 34 protrudes into the recess in the building structure G and is accessible. The fastening section 34 can be connected to a fastening element 35. In the embodiment shown, the fastening element 35 also serves to detachably fasten the mounting element 28 to the formwork housing 2. For this purpose, a fastening element 35 in the form of a nut is arranged. The fastening section 34 and the fastening element 35 have threaded structures via which the two elements can be connected to one another.
    In the embodiment shown, the fastening element 35 has a flange section 42 with which the fastening element rests on the formwork housing 2.
    The mounting element 28 also has a sealing section 36, which lies between the fastening section 34 and the bearing section 31. With the sealing section 36, a seal can be provided between the mounting element 28 and the bearing opening 30, so that when the concrete is poured, no concrete can get through the bearing opening 30 into the cavity 5. In the embodiment shown, the sealing section 36 has a conical outer shape. The conical outer shape of the sealing section is pressed against the bearing opening, thereby providing a sealing effect. The bearing opening 30 is also slightly conical here.
    In the second embodiment according to FIGS. 5 and 6, the hose housing 2 has at least one marking element 29 for providing a marking on the building structure G cast from concrete. In the embodiment shown, four marking elements are arranged. The marking elements 29 are at a certain distance from the opening 6 or here from the breaking edges 23. The marking elements 29 create a marking on which, for example, a dowel with a screw for fastening a pipe bulkhead 40 is to be arranged in the recess.
    The at least one marking element 29 is preferably an elevation 37 which extends away from the top wall 3 opposite the cavity 5 and which, after the concrete has been poured, leaves a recess in the concrete as a drilling mark.
    In a third embodiment, not shown in the figures, it is also possible to arrange the assembly elements 28 in combination with the marking elements 29.
    In all embodiments, a negative structure 38 extending away from the top wall 3 and arranged on the side opposite the cavity 5 is placed. The negative structure 38 creates a positive structure in the cast concrete, which provides a guarantee element in the cast concrete. The negative structure 38 is optional.
    The formwork housing 2 also has position markings 39 in the area of the side wall 4. These position markings help to position the formwork insert.
    The formwork housing 2 has further openings 18 for the storage of fastening elements 19, such as fastening nails 19. The shuttering housing 2 can be fastened to a shuttering board via these fastening nails. The formwork housing 2 rests with its end face 25 on the formwork board and the fastening elements 19 are connected to the formwork board. The fastening elements 19 are torn out of the shuttering housing after the shuttering board has been removed.
    The formwork insert 1 further comprises a sleeve element 7 which is arranged in the region of the opening 6. The sleeve element 7 has a central opening 8 which serves to receive the tube 9 to be passed through the opening 6. The sleeve element 7 extends circumferentially around the opening 6. Circumferential is understood to mean complete circulation. The cuff element 7 therefore has no interruption. Viewed along the central axis M, the sleeve element 7 extends at least partially into the opening 6. In the embodiment shown, the sleeve element 7 extends completely through the opening 6 and also above it, namely over the top 10 and the bottom 11 of the top wall 3.
    The sleeve element 7 has sound-absorbing properties and properties that seal against liquids and solids. On the one hand, the cuff element 7 has the function of preventing sound coupling from the pipe 9 to the formwork housing 2. This is particularly important in later use. On the other hand, the sleeve element 7 serves as a sealing element between the opening 6 and the pipe 9. The sleeve element 7 prevents liquid concrete or concrete milk from entering through the area between the opening 6 and the outer surface of the pipe 9. As a result, the cavity 5 is created during the production of the building structure G not filled with concrete or concrete milk.
    The cuff element 7 is particularly preferably softer and more elastic than the formwork housing 2. Consequently, the cuff element 7 can be easily deformed with respect to the formwork housing 2.
    In FIGS. 1 and 2 it is shown that the sleeve element 7 extends completely through the opening 6 as seen along the central axis M. The sleeve element 7 also extends from the top side 10 of the top wall 3 beyond the top side 10 of the top wall 3. The same can be said with regard to the underside 11 of the top wall 3. The sleeve element 7 extends from the underside 11 of the top wall beyond the bottom 11 of the top wall. The sleeve element 7 thus protrudes into the cavity 5.
    Other designs are also conceivable. For example, it is possible that the cuff element 7, viewed from the opening 6, extends exclusively through the opening 6 and over the top 10, or that the cuff element 7, viewed from the opening 6, extends exclusively out of the opening 6 over the underside 11 of the top wall 3 extends out.
    As shown in FIG. 3, the sleeve element 7 has a circumferential groove 13 on its outer side 12. The top wall 3 protrudes into this circumferential groove 13. The groove 13 has a groove width R. The groove width R here is greater than the thickness D of the cover wall 3. Consequently, the sleeve element 7 is supported in the formwork housing 2 with axial play in the direction of the central axis M. In alternative embodiments, the groove width R can also correspond to the thickness D of the top wall or else be smaller than the thickness D. The sleeve element 7 would then be clamped to the formwork housing 2 here.
    The groove 13 is adjoined, here in the area of the underside 11, by a conical surface 26. This conical surface 26 essentially serves as an assembly aid when assembling the cuff element 7 in the opening 6. The cuff element 7 can be positioned on the conical surface 26 on the opening 6 and then pushed into the opening 6 until the groove 13 is level the top wall 3 comes to rest and the top wall 3 extends into the groove 13.
    On its inside 14, the sleeve element 7 has at least one circumferential sealing lip 15. The sealing lip 15 can be placed against an outer surface of the pipe 9 when the pipe 9 protrudes through it and provides a corresponding sealing effect. In the present embodiment, exactly a single sealing lip 15 is shown, which is at an angle to the central axis M. In alternative embodiments, however, a plurality of sealing lips can also be arranged at a distance from one another in the direction of the central axis M. The sealing lip 15 or the sealing lips extend completely circumferentially around the central axis M. The sealing lip 15 or the sealing lips therefore have no interruption. The sealing lip 15 is molded onto the cuff element, the cuff element 7 being formed in one piece.
    Alternatively, it would also be possible that the sealing lip is dispensed with and that the sleeve element 7 acts only with its inner side 14 on the outer surface of the tube 9 and thus provides a sealing effect. Furthermore, the sealing effect could also be provided by one or more sealing beads that stand out from the inside 14.
    The sealing lip 15 or the sealing point is preferably arranged in such a way that it is in the region of the lateral surface 27 of the opening 6 when the sleeve element 7 in the opening 6 is in the ready-to-use position. The jacket surface provides a stop for the sleeve element 7 so that it cannot expand radially to the central axis M when the pipe 9 protrudes through it.
    Above the upper side 10, the sleeve element 7 has a conically shaped inlet area 16 on its inside 14. The diameter of the inlet area 16 decreases with increasing distance from the end face 17 of the sleeve element 7 along the central axis M. The conical inlet area 16 essentially serves to position the pipe 9 in relation to the opening 8 of the sleeve element 7, so that the pipe passes centrally through the opening 8 to be led. This enables the tube 9 to be positioned as precisely as possible in the central opening 8. This improves the effect of the sealing lip 15 or of the collar element 7 on the pipe.
    With regard to its external shape, the sleeve element 7 is designed to protrude over the top 10 of the top wall 3. The diameter of the outside 12 of the cuff element 7 is thus increased with increasing distance from the top 10. This projection has the advantage that the sleeve element 7 can work together optimally with the tube 9, as is explained below with reference to FIGS. 6 to 8.
    The sleeve element 7 can be molded onto the formwork housing 2. This is preferably a material connection between the sleeve element 7 and the shuttering housing 2. The sleeve element 7 and the shuttering housing 2 are particularly preferably produced using a two-component injection molding process. Alternatively, the sleeve element 7 can also be glued to the formwork housing 2. This embodiment provides a one-piece shuttering insert 1, which is composed of the shuttering housing 2 and the sleeve element 7. The sleeve element 7 is connected to the formwork housing 2 in a non-releasable manner.
    In an alternative embodiment, the sleeve element 7 can also be mechanically connected to the formwork housing 2, in particular in a form-fitting or force-fitting manner. With regard to the mechanical connection, the groove 13 is advantageously arranged. The sleeve element 7 is detachably connected to the formwork housing 2.
    The cuff element 7 is preferably an elastic body. In particular an elastomer body. In the particularly preferred embodiment, the sleeve element is made of ethylene-propylene-diene rubber and preferably has a hardness in the range from 50 to 70 IRHD, in particular 60 IRHD.
    The cross section of the tube 9 is preferably the same as the cross section of the opening 6 and the central opening 7. Circular cross sections are particularly preferred.
    In the figures 7 to 10 the individual steps of the production of the recess in the building structure G are shown. According to FIG. 7, in a first step the formwork insert 1 with a pipe 9, here in the form of a branch, is firmly positioned on a formwork board 43. The concrete is then poured onto the shuttering board 43.
    In FIG. 8, the structure is shown with the shuttering board removed. The formwork insert 1 lies in the recess A. The formwork insert 1 can then be removed from the recess A, the assembly elements 28 remaining in the recess A here, as shown in FIG. In other embodiments, the markings remain in recess A.
    In FIG. 10 it is shown how a pipe bulkhead 40 is placed in the recess A and can be connected to the assembly elements 28. The pipe bulkhead is brought into contact with the pipe 9.
    In a method for providing a recess A in a building structure G cast from concrete, a shuttering liner 1 is positioned and fixed on a shuttering board 43 as described above, with concrete being poured around the shuttering liner 1 in a subsequent step, and the shuttering liner removed after the concrete has dried, the mounting element 28 and / or the marking 29 remaining on the building structure G.
    REFERENCE LIST
    1 shuttering insert 2 shuttering housing 3 top wall 4 side wall 5 cavity 6 breakthrough 7 sleeve element 8 central opening 9 tube 10 top 11 bottom 12 outside 13 groove 14 inside 15 sealing lip 16 inlet area 17 front side 18 openings 19 fastening elements 23 breaking edge 25 front side 26 surface 27 outer surface 28 Mounting element 29 Marking element 30 Bearing opening 31 Bearing section 32 Retaining structure 33 Cone 34 Fastening section 35 Fastening element 36 Sealing section 37 Elevation 38 Negative structure 39 Position markings 40 Pipe bulkhead 41 End area 42 Flange section 43 Formwork board A Recess D Thickness R Groove width G Building structure α angle
    权利要求:
    Claims (15)
    [1]
    1. Formwork insert (1) to provide a recess (A) in a building structure (G) cast from concrete,wherein the formwork insert (1) comprises a formwork housing (2) with a top wall (3) and a side wall (4) adjoining the top wall (3) and running around the top wall (3),wherein the top wall (3) and the side wall (4) define a cavity (5), at least one opening (6) extending through the top wall (3) along a central axis (M) being arranged in the top wall (3) or wherein breaking edges (23) are arranged in the top wall (3) along which a part of the top wall (3) can be broken out in such a way that an opening can be created that extends through the top wall (3) along a central axis (M),characterized,that the shuttering insert (1) furthermore has at least one assembly element (28) that can be cast into the building structure (G), which assembly element (28) is held on the shuttering housing (2) in a precisely positioned manner and can be separated from the shuttering housing (2), such that when the shuttering housing is removed (2) the formwork housing (2) can be separated from the assembly element (28) from the building structure,and orthat the formwork housing (2) has at least one marking element (29) for providing a marking on the building structure (G) cast from concrete.
    [2]
    2. Formwork insert according to claim 1, characterized in that the mounting element (28) extends through a bearing opening (30) in the top wall (3) and is held in the bearing opening (30) in a precisely positioned manner.
    [3]
    3. Formwork insert according to claim 1 or 2, characterized in that the mounting element (28) has a bearing section (31) which, when connected to the formwork housing (2), protrudes from the top wall (3) opposite the cavity (5),wherein the bearing section preferably has a retaining structure (32) which provides and / or a mechanical resistance in the cast-in state against an extraction force acting on the mounting element (28)wherein the bearing section (31) preferably has an anti-rotation structure, preferably a retainer, which provides a mechanical resistance in the cast-in state against a rotary movement acting on the mounting element (28).
    [4]
    4. Formwork insert according to claim 3, characterized in that the retaining structure (28) has at least one cone (33), the diameter of the cone (33) increasing as the distance from the top wall (3) increases.
    [5]
    5. Formwork insert according to one of the preceding claims, characterized in that the mounting element (28) has a fastening section (34) which protrudes from the top wall (3) into the cavity (5) in the state connected to the formwork housing (2) and with a fastening element (35) can be connected.
    [6]
    6. Formwork insert according to claim 5, characterized in that the mounting element (28) with the fastening element (35), which cooperates with the fastening section, is releasably secured to the formwork housing (2) and / or that the fastening element (35) is an external element , such as a pipe bulkhead or a pipe clamp, can be secured to the cast mounting element (28).
    [7]
    7. Formwork insert according to one of the preceding claims, characterized in that the mounting element (28) has a sealing section (36) which, when connected to the formwork housing (2), lies in the region of the bearing opening (30) and a seal between the bearing opening ( 30) and the mounting element (28) in such a way that when the concrete is poured, no concrete can get through the bearing opening (30) into the cavity (5).
    [8]
    8. Formwork insert according to claim 1 or one of the preceding claims 2 to 7, characterized in that the at least one marking element (29) is a protrusion (37) extending away from the top wall (3) opposite the cavity (5), which after after pouring the concrete, it leaves a recess in the concrete as a drilling mark.
    [9]
    9. Formwork insert according to one of the preceding claims, characterized in that the formwork housing (2) has a polygonal basic shape, wherein either a mounting element (28) or a marking element (29) is preferably arranged in each corner; or that the formwork housing (2) has a circular-cylindrical basic shape, at least two assembly elements (28) and / or marking elements (29) being arranged in total.
    [10]
    10. Formwork insert according to one of the preceding claims, characterized in that a negative structure (38) is arranged from the top wall (3) on the side opposite the cavity (5), such that a positive structure is created in the poured concrete, which in the poured concrete provides a guarantee element; and / or that the formwork housing (2) has position markings (39) in the area of the side wall (4).
    [11]
    11. Formwork insert according to one of the preceding claims, characterized in that the formwork insert (1) further comprises a sleeve element (7) with a central opening (8) for receiving a tube (9) to be passed through the opening (6), wherein the Cuff element (7) extends circumferentially around the opening (6) and extends along the central axis (M) of the opening (6) at least partially into the opening (6), and wherein the cuff element (7) has sound-absorbing and sealing properties.
    [12]
    12. Formwork insert (1) according to one of the preceding claims, characterized in that the cross-sectional shape of the opening (6) or the central opening (8) corresponds essentially to the cross-sectional shape of the pipe (9) to be passed through, said cross-section preferably being circular , and / or that the formwork housing (2) comprises further openings (18) for the storage of fastening elements (19), such as fastening nails.
    [13]
    13. Building structure with a recess, which is provided with a shuttering insert according to one of the preceding claims, wherein the at least one mounting element (28) is cast in concrete; and / or wherein a marking is provided in the concrete with the marking element (29).
    [14]
    14. Building structure (G) according to claim 13, characterized in that the building structure (G) further comprises a pipe partition (40) and a pipe (9), which pipe partition (40) can be placed in the recess, the pipe partition (40) is attached to the mounting element (28), surrounds the pipe section of the pipe which protrudes into the recess; and / or wherein the pipe bulkhead (40) is attached to a fastening element positioned at the location of the marking.
    [15]
    15. A method for providing a recess in a building structure (G) cast from concrete, wherein a shuttering insert (1) according to one of claims 1-12 is positioned and fixed on a shuttering board, with concrete being poured around the shuttering insert in a subsequent step, and wherein the formwork insert is removed after the concrete has dried, the mounting element and / or the marking remaining on the building structure.
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    同族专利:
    公开号 | 公开日
    EP3757315A1|2020-12-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5377602A|1990-03-26|1995-01-03|Keogh; Joseph P.|Installation of safes|
    CH687101A5|1993-11-04|1996-09-13|Schenk & Sohn O|Device for holding end of pipe, with casing concreted into wall or floor|
    JP4951358B2|2007-01-30|2012-06-13|株式会社滝口商店|Roof drain and drain body built into it|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    EP19181943.2A|EP3757315A1|2019-06-24|2019-06-24|Formwork insert|
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