Sealing arrangement for a formwork panel

Abstract

Sealing arrangement (20; 40) of a formwork panel (12; 12a) having at least one opening (14) for fastening a formwork anchor (16), wherein the sealing arrangement (20; 40) is arranged in the opening (14) and seals the area between the inner wall (18; 42) of the opening (14) and the formwork anchor (16), wherein the sealing arrangement comprises an annular elastic sealing element (24) for sealing the opening (14), the inner edge of which is designed to abut the formwork anchor (16), characterized in that the sealing arrangement consists only of the elastic sealing element (24) or only of a one-piece sleeve (22) inserted into the opening (14) and the elastic sealing element (24), and that in the inner wall (18; 42) of the opening (14) or in the inner wall of the Sleeve (22) is formed with a profile (28; 44) which interacts with a complementary profile (32) formed directly on the elastic sealing element (24).

Description

[0001] The present invention relates to a sealing arrangement for a formwork panel, which has at least one opening for fastening a formwork anchor. The sealing arrangement is located in the opening and seals the area between the inner wall of the opening and the formwork anchor. It has an elastic sealing element, the inner edge of which is designed to abut the formwork anchor.

[0002] The formwork anchor secures the formwork panel relative to a support frame or to another formwork panel, e.g., in the case of parallel inner and outer formwork. The sealing arrangement ensures that no concrete escapes through the opening when the formwork is filled.

[0003] Such a sealing arrangement is described in DE 10 2010 011 173 A1. There, the sealing arrangement comprises an outer sleeve and an inner sleeve held within the outer sleeve by means of reciprocal profiling. An elastic sealing element is held in the inner sleeve, for example, vulcanized to it. Such a sealing arrangement is very complex in design and therefore costly. Furthermore, if the sealing element is replaced, the inner sleeve must also be replaced.

[0004] It is therefore the objective of the invention to create a sealing arrangement that is easier to manufacture and easier to replace. This objective is achieved by a sealing arrangement with the features of claim 1. Advantageous further developments of the invention are the subject of the dependent claims. Advantageous further developments of the invention are also described in the description and in the drawings.

[0005] While in the aforementioned prior art an inner sleeve is attached to the profile of the sleeve, which in turn carries the sealing element, the sealing arrangement according to the invention comprises either only the elastic sealing element held directly in the opening or a one-piece sleeve attached in the opening of the formwork panel, in which the elastic seal is attached, in particular in a form-fitting manner, by means of a profile. According to the invention, the profile is formed either in the inner wall of the opening of the formwork panel or in the sleeve and interacts, in particular in a form-fitting manner, with a complementary profile, which is arranged directly in the annular elastic sealing element of the sealing arrangement. The inner edge of the sealing element is again designed to abut the formwork anchor.

[0006] The sealing arrangement is thus formed either solely by the elastic sealing element or by a sleeve inserted into the opening and the elastic sealing profile. The sealing element is held securely in the sleeve or opening by the profile grip, allowing for easy replacement. An advantage of this is that only the elastic sealing element of the sealing arrangement needs to be replaced, and not other parts of the sleeve, such as an inner sleeve as in the prior art. This is, among other things, more environmentally friendly.The profile engagement ensures, on the one hand, a secure hold of the sealing element in the opening or in the sleeve and, on the other hand, easy replacement, since after the removal of the formwork containing the formwork panel from the concrete, the elastic sealing element can be easily detached from the profile engagement due to its good deformability.

[0007] In an advantageous embodiment of the invention, the profile and the complementary profile are designed such that the sealing element can be removed in one axial direction, particularly towards the concrete side of the opening, and is fixed in the opposite axial direction, particularly towards the air side of the opening, by the interlocking of the profile of the sleeve or the formwork panel on the inner wall of the opening with the complementary profile on the outer edge of the seal. In this way, when the formwork is filled with concrete, the sealing element cannot be forced outwards, but the sealing element can be easily removed from the opening towards the concrete side after the formwork has been removed. Such a solution is easy to handle and allows for quick replacement of the sealing element.

[0008] In an advantageous embodiment of the invention, the profile is designed as a single projection or a single rib. The complementary profile on the outer circumference of the sealing element is then designed as a corresponding recess. Such a profile and complementary profile are easy to manufacture and can therefore be produced cost-effectively. Furthermore, a single rib or projection, which is somewhat larger, is mechanically less susceptible to damage than a profile or profiling consisting of a multitude of smaller ribs or the like. Especially in construction, formwork panels are often subjected to harsh mechanical stresses.

[0009] A single larger protrusion or stu⍰e is less likely to be mechanically damaged than a rib profile or the like.

[0010] Preferably, the projection has, in the axial direction of the opening, a stud extending towards the plane of the formwork panel on one side and a ramp on the opposite side. In this way, the seal is fixed in one direction, for example in the air direction of the formwork panel, by the stud, but can be easily pulled out of the opening towards the concrete side of the formwork panel by means of the ramp of the projection. In this context, it should be noted that the elastic property of the sealing element further facilitates the sliding along the ramp.

[0011] Preferably, the sleeve is made of metal. It is possible in principle to manufacture the sleeve from plastic, but plastic is more susceptible to mechanical damage than a metal sleeve under the harsh conditions of a construction site. In any case, the sleeve is made of a material that is inelastic compared to the sealing element.

[0012] In an advantageous further development of the invention, the sleeve has an outwardly projecting collar on its concrete side that rests against the formwork panel. This ensures that the sleeve is securely held against the formwork panel in the opening in the direction of airflow.

[0013] Preferably, the sealing element consists of an elastomer, in particular rubber. Such a sealing element can conform well and elastically to the profile on the inner wall of the opening in the formwork panel or sleeve and simultaneously elastically conform to the formwork anchor, thus enabling a reliable seal of the opening. Furthermore, the elastic properties of the elastomer facilitate the replacement of the sealing element.

[0014] It is particularly advantageous if, in a section of the elastomeric sealing element running parallel to the formwork panel, its thickness decreases towards the formwork anchor, so that the sealing element can be easily stretched in the contact area and thus fits elastically and tightly against the formwork anchor.

[0015] In an advantageous embodiment of the invention, the sleeve is cup-shaped, with the bottom of the cup having a central perforation penetrated by the formwork anchor. In this way, the sleeve supports the elastic sealing element over a large part of the distance between the inner wall of the opening and the formwork anchor, so that the sealing element only has to withstand the pressure of the concrete poured into the formwork in the contact area with the formwork anchor.

[0016] The invention relates to a formwork arrangement with several formwork panels, with formwork anchors that penetrate openings in the formwork panels in order to secure them, and with sealing arrangements of the above type arranged in the openings of the formwork panels.

[0017] It is obvious to the person skilled in the art that the above design variants of the sealing arrangement can be combined with each other in any way.

[0018] The invention will now be described, for example, with reference to the schematic drawing. This drawing shows: Fig. 1 a cross-section through a formwork arrangement with formwork panel, formwork anchor and sealing arrangement in a first form⍰stiring⍰form, Fig. 2 a detail III from Fig. 1, Fig. 3 a cross-sectional view of a second version of a formwork arrangement consisting of formwork panel, formwork anchor and sealing arrangement, which here consists solely of a sealing element, and Fig. 4 a cross-section through a formwork arrangement with formwork panel, formwork anchor and sealing arrangement in a third version.

[0019] Fig. Figure 1 shows a formwork arrangement 10 consisting of a formwork panel 12 having a circular opening 14 through which a formwork anchor 16, for example a threaded rod, passes. This anchor, in conjunction with appropriate screws, secures the formwork panel in a formwork. The screws are not shown for clarity. In the drawing, the concrete side of the formwork panel 12 is shown at the top and the air side at the bottom. To seal the area between the formwork anchor 16 and the inner wall 18 of the opening 14, a sealing arrangement 20 is arranged in the opening 14. This sealing arrangement 20 consists of a sleeve 22 and a sealing element 24 inserted into the sleeve. This sealing arrangement 20 is now described using the following: Fig. 2, which is an excerpt II from Fig. Figure 1 shows, in more detail. The enlarged section shows the area to be sealed of the opening 14 between the formwork panel 12 and the formwork anchor 16.

[0020] How Fig. As clearly shown in Figure 2, the sleeve 22 has an outwardly projecting collar 26 on its concrete side, which rests against the surface of the formwork panel 12. In this way, the sleeve 22 is securely held in the opening 14 against the pressure of the concrete against the formwork panel. On its inner side, the sleeve 22 has a profile in the form of a projection 28, which is barbed towards the concrete side and has a ramp 30 towards the air side. The elastic sealing element 24 is designed as a rubber seal, which has a recess 32 on its outer side, where it rests against the sleeve, that is complementary to the projection 28. In this way, the rubber seal 24 is held in a form-fitting manner against the sleeve 22. The rubber seal 24 has a section 34 au⍰ that is parallel to the plane of the formwork panel 12, the inner edge of which bears elastically against the formwork anchor 16. This is facilitated by the fact that the thickness of section 34 decreases towards the formwork anchor.In this way, the rubber seal 24 held in the sleeve 22 effectively seals the opening 14 against the passage of concrete.

[0021] Fig. Figure 3 shows another embodiment of the invention. In addition to the previously shown embodiment of the Fig. 1 and Fig. Two identical parts are provided with the same reference numerals. The sealing assembly 40 of the Fig. 3 consists solely of the sealing element 24, which is already in Fig. 1 is shown. In contrast to the one in the Fig. 1 and Fig. The sealing arrangement shown in Figure 2 comprises only the sealing element in the form of the rubber seal 24, which, with its recess 32, is held directly against a protruding profile 44 formed on the inner edge or inner wall 42 of the opening 14 of the formwork panel 12a. This profile in the form of a protruding protruding 44 corresponds to the profile 28 formed on the sleeve 22 from the Fig. 1 and Fig. 2. In this sealing arrangement 40, the rubber seal 24 is therefore not supported in a sleeve, but directly on a circumferential profile 44 on the inner wall 42 of the opening 14 of the formwork panel 12a. In contrast to the one in Fig. 1 and Fig. The formwork panel 12 shown in section 2 must be used for formwork panel 12. Fig. 3 the profile 44 is incorporated into the inner wall 42 of the opening 14.

[0022] Fig. Figure 4 shows a third embodiment of a formwork arrangement with a sealing arrangement 50 similar to Fig. 1 and Fig. 2. Identical or functionally equivalent parts are again designated with identical reference numerals. The sealing arrangement 50 in Fig. 4 comprises a (flared) sleeve 52 held in the inner wall 18 of the opening 14 of the formwork panel 12, in which an elastomeric sealing element 54 is held, the inner edge of which rests against the formwork anchor 16 and has a section 34 extending in the plane of the formwork panel 12a, which closes the space between the inner wall 18 of the opening 14 and the formwork anchor 16. In contrast to the Fig. 1 and Fig. 2 The profile 56 between sleeve 52 and sealing element 54 is designed as a sawtooth profile, the teeth of which point in the direction of the concrete and the ramps of which point in the direction of airflow of the formwork panel 12a. The rubber seal 24 can therefore be easily inserted before the concrete is poured but cannot be displaced from its position by the concrete pressure. The profile 56 between the inner wall 18 of the opening 14 can be roughened in such a way that the elastomeric sealing element 24 is held in it by frictional engagement.

[0023] It is self-evident that the invention is not limited to the described embodiments, but can instead vary within the scope of protection of the following claims. Reference symbol list: 10 Formwork arrangement with formwork panel, formwork anchor and sealing arrangement 12 Formwork panels with an opening for receiving a formwork anchor 12a Formwork panel with a profile formed on the inner wall of the opening 14 circular openings in the formwork panel for receiving a formwork anchor 16 formwork anchors 18 Inner wall of the opening of the formwork panel 20 first execution arm of a sealing arrangement comprising a sleeve and an elastic sealing element 22 Sleeve of the sealing arrangement for insertion into the opening of the formwork panel 24 Sealing element - rubber seal 26 Outwardly projecting collar of the sleeve for contact with the ⍰ surface of the formwork plate for axial securing of the sleeve to the formwork plate 28 Profile - nose-like projection on the inner wall of the sleeve 30 Ramp - ramp-like axial end of the projection 32 complementary profile - recess on the sealing element complementary to the projection 34 Section of the elastic sealing element running in the plane of the formwork panel for sealing the opening 40 Second version of a sealing arrangement with an elastic sealing element taken directly into the opening of the formwork panel 42 profiled inner wall of the formwork panel 44 nose-shaped or stud-shaped profile on the inner wall of the opening for axial securing of the sealing element 50 third version of a sealing arrangement with sleeve and sealing element 52 Sleeve or crimp sleeve of the sealing arrangement 54 Elastomeric sealing element held in the sleeve, in particular made of rubber 56 Profile between sleeve and sealing element, designed as a sawtooth profile QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2010 011 173 A1

[0003]

Claims

[1] Sealing arrangement (20; 40) of a formwork panel (12; 12a) which has at least one opening (14) for fastening a formwork anchor (16), wherein the sealing arrangement (20; 40) is arranged in the opening (14) and seals the area between the inner wall (18; 42) of the opening (14) and the formwork anchor (16), wherein the sealing arrangement comprises an annular elastic sealing element (24) for sealing the opening (14), the inner edge of which is designed to abut the formwork anchor (16), characterized by , that the sealing arrangement consists only of the elastic sealing element (24) or only of a one-piece sleeve (22) inserted into the opening (14) and the elastic sealing element (24), and that a profile (28; 44) is formed in the inner wall (18; 42) of the opening (14) or in the inner wall of the sleeve (22) which interacts with a complementary profile (32) formed directly on the elastic sealing element (24). [2] Sealing arrangement (20; 40) according to claim 1, characterized by , that the profile (28; 44) and the complementary profile (32) are designed such that the sealing element (24) can be removed in an axial direction, in particular in the direction of the concrete side of the opening (14), and in the opposite direction, in particular in the direction of the air side of the opening (14), is fixed by the interlocking of the profile (28; 44) of the sleeve (22) or the formwork plate (12; 12a) on the inner wall (18; 42) of the opening (14) with the complementary profile (32) on the outer edge of the sealing element. [3] Sealing arrangement (20; 40) according to claim 1 or 2, characterized by , that the profile (28; 44) is formed as a single projection, and that the complementary profile (32) is formed as a corresponding recess. [4] Sealing arrangement (20; 40) according to claim 3, characterized by, that the projection in the axial direction of the opening (14) has on one side a stu⍰e extending in the direction of the plane of the formwork plate (12; 12a) and on the opposite side a ramp (30). [5] Sealing arrangement (20; 40) according to one of the preceding claims, characterized by , that the sleeve (22) is made of metal. [6] Sealing arrangement (20; 40) according to one of the preceding claims, characterized by , that the sleeve (22) has a collar (26) surrounding the formwork plate (12; 12a) on its concrete side and / or on its air side. [7] Sealing arrangement (20; 40) according to one of the preceding claims, characterized by , that the elastic sealing element (24) consists of an elastomer, in particular rubber. [8] Sealing arrangement (20; 40) according to one of the preceding claims, characterized by, that the sealing element (24) extends a section (34) parallel to the formwork plate (12), the thickness of which decreases towards the formwork anchor (16). [9] Formwork with several formwork panels (12; 12a) which has openings (14) for formwork anchors (16) for securing the formwork panels and sealing arrangements (20; 40) arranged in the openings (14) of the formwork panels (12; 12a) according to one of the preceding claims for sealing the openings (14). [10] Formwork according to claim 9, in which the formwork panels (12; 12a) are arranged in two parallel planes and have opposing openings (14) through which a formwork anchor (16) is penetrated, wherein each opening (14) is sealed against the formwork anchor (16) by the sealing arrangement (20; 40).

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