EP2944742B1 - Fixing bracket for stop-end panels - Google Patents

Description

TECHNICAL AREA

The invention relates to a bracket for Abschalelemente in concrete, a concrete formwork and a method for producing a concrete formwork.

STATE OF THE ART

Brackets are often used in concrete construction for fixing and holding Abschalelementen, d. H. used by Abschalplatten or Abschalbrettern. In a typical application, a leg of the L-shaped holding bracket, referred to here as a base leg, is formed by nailing on an already existing casing, e.g. As a horizontal floor or ceiling cladding attached. After attaching the base leg further Abschalelemente on still free leg - here referred to as holding leg - attached. Typically, the attachment of the base leg on a horizontal formwork protrude from the bracket and correspondingly attached to him Abschalelemente thereof from the vertical upward.

US2313880 discloses a bracket whose legs are connected by a hinge and thus adjustable against each other. Retaining grooves are arranged on opposite sides of one of the legs and allow the insertion of Abschalbrettern in mutually aligned arrangement. This document discloses all the technical features of the preamble of claim 1. US5788875 discloses an angle, for example made of plastic, with retaining grooves on one of the legs, which can also be used to insert plates in alignment with each other.

PRESENTATION OF THE INVENTION

Provided for the purpose described here bracket are known from the prior art in various forms and configurations. In addition to basic technical requirements such as stability and safety, the low cost of the holding angle remaining after concrete casting in concrete as well as simple and rapid application are of considerable importance for practical use.

It is an object of the present invention to simplify the use of brackets in the production of formwork in concrete construction and in particular to allow the production of long formwork.

The object is generally achieved by the subject matters of the independent claims. Particular and advantageous embodiments are defined by the dependent claims and by the following description and the figures. The object is achieved by an inventive bracket according to claim 1 for shuttering in concrete. Shuttering elements come in particular shut-off or Abschalbretter into consideration. The bracket comprises a base leg, wherein the base leg mounting holes for rigid fixation comprises on a substrate. The mounting holes may be continuous transverse holes or holes in the base leg for attachment by means of nails.

The bracket further comprises a retaining leg, wherein the base leg and the retaining leg together form an L-shape and represent a basic shape of a retaining bracket according to the invention. The base leg and the holding leg can be made in one piece.

The retaining leg comprises two elongate integral retaining grooves for receiving in each case one end section of a respective Abschalelementes. These integral retaining grooves each have an extension direction parallel to an extension direction of the retaining leg. The integral retaining grooves each define an associated shuttering element direction perpendicular to its direction of extent. The terms "extension" and "direction of extension" are used in this document - unless in individual cases deviating defined - basically to be understood as longitudinal extension or longitudinal direction.

In use, the end portions of the Abschalelemente are inserted or inserted into the retaining grooves. The associated Abschalelement-direction is then the direction of extension of the Abschalelements. For elongated Abschalelemente, in particular Abschalbretter, the Abschalelement direction corresponds to the longitudinal direction or extension direction of the elements or boards.

The integral retaining grooves form integral parts of the retaining leg, so are integrally formed on the holding leg or molded. Their extension directions correspond to an extension direction of the retaining leg.

In some embodiments of the bracket, the integral retaining grooves are arranged to receive one end portion of each one shuttering element in alignment.

In some embodiments of the bracket, the shutter member directions defined by the integral retaining grooves are orthogonal to the extension direction of the base leg. If the integral holding grooves, as described above, are additionally set up for aligned alignment of the respective shut-off elements, the two shut-off elements together with the base leg form a T-shape in the top view during use.

In some embodiments, the holding leg comprises a holding element with along its extension direction H-shaped cross section with two outer webs and a central web. The integral retaining grooves are formed by the two concave inner spaces, the retaining element, separated from the central web. The retaining element is an integral part of the retaining limb pointing away from the base limb.

In some of these embodiments, the outer webs form a right angle with the base leg. Accordingly, the Abschalelement directions are also perpendicular to the extension direction of the base leg. The holding element is preferably symmetrical with respect to a central axis of the base leg. According to the invention, the retaining leg comprises connecting elements, latching elements or snap elements in the form of holes, for producing a rigid connection with a separate retaining rail. The connecting elements of the retaining leg are designed to connect the retaining leg and the retaining rail in at least two alternative, mutually parallel positions. According to the invention, the bracket further comprises a structurally separate from the base leg and holding leg retaining rail. The retaining rail comprises an elongated separate retaining groove. Furthermore, the retaining rail comprises connecting elements, in particular locking elements or snap elements. These connecting elements of the retaining rail correspond to the connecting elements of the retaining leg and are designed for producing a rigid connection with the retaining leg.

In such embodiments with a separate retaining rail, the retaining bracket is accordingly (at least) two-piece and consists (at least) of a base angle in the form of a retaining bracket as described above and the additional retaining rail. As will be shown in more detail below, but also several retaining rails may be present.

The connecting elements of the retaining leg and the retaining rail attach in the connected state, the orientation of the retaining rail with respect to the retaining leg. Thus, the connecting elements of the retaining rail can be formed by protruding from a base of the retaining rail locking lugs and the connecting elements of the retaining leg by corresponding transverse bores or holes in the retaining leg, wherein a positive connection is formed by the locking.

In some embodiments, the retaining rail is formed by a U-profile Here, a concave interior of the U-profile forms the separate retaining groove.

In some embodiments, with the support rail in the connected state, an extending direction of the separate retaining groove is parallel to the extending direction of the integral retaining grooves.

In some embodiments with a retaining rail, a shut-off element direction defined by the separate retaining groove is parallel to the longitudinal direction of the base leg. The retaining groove can be aligned both with the base leg and have a transverse offset to the base leg.

In some embodiments, the retaining bracket is made of plastic, in particular injection molded plastic. As a suitable material is about PE (polyethylene) into consideration.

According to a further aspect, the object is achieved by a concrete formwork. A concrete formwork according to the invention comprises at least one retaining bracket according to the invention as previously and subsequently disclosed with and in the figures. The concrete formwork further comprises at least two Abschalelemente. In this case, an end portion of a Abschalelementes is received by one of the integral retaining groove.

An end portion of the second Abschalelementes is included in the second integral retaining groove, or possibly the separate retaining groove of the retaining rail.

According to a further aspect, the object is achieved by a method for producing a concrete casing. The method comprises providing a support bracket, a support bracket according to the invention as previously and subsequently disclosed with and in the figures. The method further comprises providing at least two shut-off elements. The method further includes rigidly mounting the base leg to the ground. The method further comprises inserting an end portion of a shuttering member into an integral retaining groove. The method further comprises inserting an end portion of another Abschalelementes in the second integral retaining groove or possibly in the separate retaining groove of the retaining rail.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1a

shows an inventive bracket (holding rail not shown) in a side view.

FIG. 1b

shows the bracket of FIG. 1 a in a view from above.

FIG. 1c:

shows the bracket of Figure 1 a, 1 b in a view from the left.

FIG. 2:

shows the bracket of Figure 1 a, 1 b, 1 c in perspective view.

3, 3b, 3c:

shows a separate retaining rail in three orthogonal views.

FIG. 4:

shows an inventive bracket with connected support rail in a perspective view.

FIGS. 5a, 5b, 5c, 5d

FIG. 2 schematically shows different configurations of a holding bracket according to the invention together with shuttering elements. FIG.

WAYS FOR CARRYING OUT THE INVENTION

Hereinafter, exemplary ways of carrying out the invention will be described with reference to the figures. In the figures, for reasons of clarity, multiply existing elements are referenced only once.

Relative location and directional indications used in the following description, such as "top", "bottom", "left", "right", refer to the figures and are for guidance only.

The following is first on the FIGS. 1 a, 1 b Reference is made, which a bracket 1 in a side view ( FIG. 1a ) as well as a supervision ( FIG. 1b ) demonstrate. The bracket 1 has a base leg 10 and a right leg 10 to the base leg holding leg 11. The base leg 10 and the holding leg 11 are integrally formed. In its typical position in the application, the bracket is 1 - as in FIG. 1a shown - oriented so that the base leg 10 is aligned horizontally and the holding leg 11 points vertically upwards. Other orientations are also possible. Thus, the base leg 10 depending on the application in particular vertically and the retaining legs 11 may be aligned horizontally accordingly. The bracket 1 is designed as a plastic injection molded part.

The base leg 10 has a basically flat underside 100, which in use a substrate - usually a casing - facing, on which the base leg 10 of the bracket 1 is mounted. However, the bottom 100 is not over the entire surface on the ground. From the bottom 100 protrude down a series of transverse webs 104, which serve as a spacer for resting on the Serve underground. Thus, in the assembled state, the underside 100 - apart from the transverse webs 104 - at a distance from the ground, which reduces the optical visibility of the remaining concrete in the bracket 1 in a desired manner.

For mounting on the ground a number of example 5 continuous mounting holes 101 is present, by means of which the base leg 10 is nailed. For reasons of stability, the base leg 10 has a longitudinal rib 102 and a series of struts 103.

The holding leg 11 has a first part 110 and a second part 111 connected to the first part 110, wherein the first part 110 and the second part 111 have a common longitudinal direction or parallel longitudinal directions. The second part 111 represents a holding element. The first part 110 is a hollow profile of exemplary square cross-section. The second part 111 has an H-shaped cross section. A first outer web 110a is in this case together with a wall of the first part 110. A second outer web 111b is parallel to the first outer web 110a, wherein the two outer webs 110a, 111b are connected by a central web 111a. Between the outer webs 110a, 111b, this results in two concave inner spaces separated by the central web 111a, which constitute integral retaining grooves 112a, 112b.

The two integral retaining grooves 112a, 112b define mutually opposed Abschalelement-directions A, A 'at right angles to its longitudinal axis and at right angles to the leg 111a.

The first part 110 of the retaining leg 11 also has an optional length scale 114, which facilitates cutting the retaining leg 11 to a length required in the respective application.

The following is in addition to Figure 1c Reference is made showing the bracket 1 in a view "from the left", with a view along the longitudinal direction of the base leg 10. The outer web 111 b has a series of connecting elements in the form of two along its longitudinal direction aligned and mutually parallel rows of holes with holes 113 a, 113 b, wherein the holes 113 a, 113 b form negative locking elements, as dargstellt below.

In a holding leg 11 facing part of the base leg 10 is also an open-front optional optional hole 115 incorporated with Dywidag thread.

FIG. 2 represents the above-described bracket 1 complementarily in a perspective view, wherein the mounting holes 101 are not shown.

The following is in addition to the FIGS. 3a, 3b, 3c Reference is made, which shows a holding machine 2 in three mutually orthogonal views.

The holding machine 2 is formed by a preferably made of plastic U-profile. The holding line 2 has parallel side walls 20 and a rear wall 21 perpendicular to the side walls 20. Together, the side walls 20 and the rear wall 21 define a separate retaining groove 22. The retaining groove 22 defines a Abschalelementrichtung B parallel to the side walls 20 and perpendicular to the rear wall 21st

On its outer side, ie pointing away from the separate retaining groove 22, the rear wall 21 has a series of positive locking elements 23 and locking lugs, which for Forming a latching or snap connection in cooperation with the negative latching elements, so alternatively the holes 113a or 113b are designed.

The following is in addition to FIG. 4 Referenced. FIG. 4 shows a further bracket, which is the bracket 1 as described above and the mounting bracket 2 mounted on the bracket 1 or formed.

In this case, the additional bracket 1 and the holding machine 2 are connected such that the detents 23 are latched to the holes 113b. Accordingly, the separate retaining groove 22 away from the base leg 10 and the longitudinal extension of the retaining leg 11 with the integral retaining grooves 112a, 112b is parallel to the longitudinal extension of the separate retaining rail 2 with the separate retaining groove 22. The arrangement of a plurality of holes 113b and locking lugs 23 is the Orientation of the holding machine 2 to the holding leg 11 firmly defined.

Instead of with the holes 113b, the locking lugs 23 could be locked in the same way with the holes 113a, resulting in a positioning of the holding machine 2, which for in FIG. 4 shown positioning is parallel. In both cases, the retaining rail 2 and separate retaining groove 22 in the top view (along the retaining leg 11) on an offset to the extension direction of the base leg 10.

The following is in addition to the Figures 5a, 5b, 5c, 5d Reference is made, which in each case show a holding bracket 1 according to the invention and partial holding rail (s) 2 as described above together with shuttering elements in the form of shuttering boards 3, 3a in a schematic plan view. In this case, the shut-off elements accommodated in integral holding grooves are each referenced with 3 'with 3 and in separate holding grooves taken up in each case with 3'. After the bentonite concrete filled areas are also marked with an "X" and after the concrete casting non-concrete filled areas with "Y". The boundary between concrete-filled and non-concrete-filled areas results in each case from the arrangement of the shuttering elements 3, 3 '. The bracket 1 is cast in all applications shown, so it is in a concrete-filled area.

FIG. 5a shows a configuration for the recess of a corner in concrete casting, wherein a Abschalelement 3 is held by an integral retaining groove and a further Abschalelement 3 'by a separate retaining groove. The holding machine 2 is advantageously secured so that their connecting elements, ie z. B. locking lugs, project into that of the integral retaining grooves, which receives no Abschalelement 3.

FIG. 5b shows an analogous configuration, wherein the Abschalelement 3 is held by the second of the two integral retaining grooves and the holding machine 2 is mounted with the other Abschalelement 3 'in the other of its two possible positions.

FIG. 5c shows a configuration not according to the invention, in which only the bracket 1 in its basic form is used and no holding machine 2 is needed. In this case, two Abschalelemente 3 are held by the two integral retaining grooves in alignment. Such a configuration may be used, for example, instead of a single longer shut-off element to increase the stability and rigidity.

FIG. 5d shows finally a configuration with four Abschalelementen, wherein each two Abschalelemente 3 are held by the two integral retaining grooves and two other Abschalelemente 3 'by a respective separate holding in each case a separate holding machine. REFERENCE NUMBERS 1 bracket 2 retaining rail 3, 3 ' formwork 10 base leg 11 holding leg 20 Sidewall of retaining rail 21 Base of retaining rail 22 separate holding groove 23 Locking lugs / positive locking elements 100 Bottom of base leg 101 mounting hole 102 longitudinal strut 103 cross brace 104 Bridge / spacer 110 first part 110a Wall of first part; Outer bridge of second part 111 second part; retaining element 111 center web 111b outer web 112a, 112b integral holding groove 113a, 113b Holes / negative locking elements 114 length scale 115 Threaded blind bore

Claims (10)

1. An angle bracket (1) for shuttering elements (3, 3') in concrete construction, the angle bracket (1) comprising a basic leg (10) and a retaining leg (11), the angle bracket (1) further comprising a retaining rail (2) structurally separate from the basic leg (10) and the retaining leg (11);
   wherein the basic leg (10) comprises mounting holes (101) for the rigid mounting on an underground;
   wherein the basic leg (10) and the retaining leg (11) together form a L-shape;
   wherein the retaining leg (11) comprises two elongated integral retaining grooves (112a, 112b) for receiving an end section each of a shuttering element (3, 3') each, as well as negative locking elements or snap elements in the form of holes (113a, 113b) for establishing a rigid connection with the retaining rail (2) ;
   wherein the integral retaining grooves (112a, 112b) each comprise an extension direction parallel to an extension direction of the retaining leg (11); and
   wherein the integral retaining grooves (112, 112b) each define an associated shuttering element direction at right angles to their extension direction and
   the holes (113a, 113b) of the retaining leg (11) are configured for connecting the retaining leg (11) and the retaining rail (2) in at least two alternative positions parallel to each other;
   wherein the retaining rail (2) comprises parallel side walls (20) and a rear wall (21) at right angles to the side walls (20), and wherein the side walls (20) and the rear wall (21) delimit a separate retaining groove (22), which defines a shuttering element direction B parallel to the side walls (20) and vertically to the rear wall (21),
   characterised in that
   the retaining rail (2) comprises a number of positive locking elements (23) or locking tabs, which are arranged on the outside of the rear wall (21) facing away from the separate retaining groove (22), wherein the locking elements (23) or locking tabs are configured to form a lock-and-snap connection in combination with the holes (113a, 113b).
2. The angle bracket (1) according to claim 1, wherein the integral retaining grooves (112a, 112b) for receiving an end section each of a shuttering element (3) in an aligned manner.
3. The angle bracket (1) according to one of claims 1 or 2, wherein the shuttering element directions defined by the integral retaining grooves (112a, 112b) are at right angles to the extension direction of the basic leg (10).
4. The angle bracket (1) according to one of claims 1 to 3, wherein the retaining leg (11) comprises a retaining element (111) of H-shaped cross-section along its extension direction with two outer supports (110a, 110b) and a central support (111a) and the integral retaining grooves (112a, 112b) are formed by two concave interior spaces of the retaining element separated from the central support (111a).
5. The angle bracket (1) according to claim 4, wherein the outer supports (110a, 111b) form a right angle with the basic leg and the retaining element is symmetrical relative to a centre axis of the basic leg (10).
6. The angle bracket (1) according to one of the preceding claims, wherein, in the connected state, an extension direction of the separate retaining groove (22) is parallel to the extension direction of the integral retaining grooves (112a, 112b).
7. The angle bracket (1) according to one of the preceding claims, wherein a shuttering element direction defined by the separate retaining groove (22) is parallel to the longitudinal direction of the basic leg (10).
8. The angle bracket (1) according to one of the preceding claims, wherein the angle bracket (1) is fabricated from plastic, in particular from injection-moulded plastic.
9. A concrete shuttering comprising:

   at least one angle bracket (1) according to one of claims 1 to 8;

   at least two shuttering elements (3, 3');

   wherein an end section of a shuttering element (3) is received in an integral retaining groove (112a) and an end section of a further shuttering element (3, 3') is received in the further integral retaining groove (12a, 12b) or in the separate retaining groove (22).
10. A method for producing a concrete shuttering, the method comprising:

    - providing an angle bracket according to one of claims 1 to 8;

    - providing at least two shuttering elements (3, 3');

    - rigidly mounting the basic leg (10) on the underground;

    - fitting an end section of a shuttering element (3) into an integral retaining groove (112a) and fitting an end section of a further shuttering element (3, 3') into the further integral retaining groove (12a, 12b) or the separate retaining groove (22).

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