Wall anchor

Abstract

A wall anchor (1) stamped from a stainless steel sheet, which in the installed state provides at its far end an embedding part (2) that can be embedded in the outer shell (3) of a cavity wall and is designed as a trapezoid with two sloping sides, the center line (cc) of which runs parallel to the longitudinal direction of the wall anchor (1), and with a trapezoidal base extending perpendicular to the center line (cc), wherein the wall anchor (1) at its other end, which is located on the inside in the installed state, is designed as a first gripping part (4) which has a recess (5) on one side that can receive the end of a flange (12) of a support installed in the cavity (10) behind the outer shell (3), wherein the recess (5) provides a bearing surface (D1) extending substantially perpendicular to the longitudinal direction of the wall anchor (1) and a stop surface (B1) extending substantially parallel to the longitudinal direction of the wall anchor at the bottom of the recess (5).wherein the stop surface (B1) and the bearing surface (D1) form a right angle with each other, wherein an elastic element (C1) is provided opposite the bearing surface (D1) which serves to hold the bearing surface (D1) very close to the flange (12) of the steel support, and wherein the first gripping part (4) is formed on the side opposite the recess (5) with a projecting stop surface (A1) which extends parallel to the longitudinal direction of the wall anchor (1), characterized in that the wall anchor (1) is extended after the first gripping part (4) in the direction of the center line (cc), that a second gripping part (6) is formed in the extended part of the wall anchor after the first gripping part (4), and a third gripping part (8) is formed in the extended part of the wall anchor after the second gripping part (6), furthermore that the second gripping part (6) and the third gripping part (8) each have a recess (7, 9) with a bearing surface (D2 and D3),which each extend substantially perpendicular to the centerline (cc) of the wall anchor (1), and wherein the recesses (7, 9) each contain a stop surface (B2, B3) which extend substantially parallel to the longitudinal direction of the wall anchor (1), and wherein an elastic element (C2, C3) is provided opposite each of the bearing surfaces (D2 and D3), wherein the respective elastic elements (C1, C2, C3) are provided at a distance from the bearing surfaces (D1, D2 and D3) wherein the distance is slightly less than the thickness of the flange (12) of a support, and wherein the distance is designed to press the flange (12) either between the bearing surface (D1) and the elastic element (C1) of the first gripping part (4) until the flange edge abuts the stop surface (B1) of the first gripping part (4), or between the bearing surface (D2) and the elastic element (C2) of the second gripping part (6),until the flange edge rests against the stop surface (B2) of the second gripping part (6), or to press between the support surface (D3) and the elastic element (C3) of the third gripping part (8) until the flange edge rests against the stop surface (B3) of the third gripping part (8), and that the wall anchor (1) is formed with projecting stop surfaces (A1, A2, A3) on the side of the wall anchor (1) opposite the recesses (5, 7, 9).

Description

[0001] The present invention relates to a wall anchor stamped from stainless steel sheet according to the preamble of claim 1.

[0002] Such a wall anchor is known from the description of utility model no. DK 93 00 461 U4.

[0003] The invention is explained in more detail below with reference to the accompanying drawing sketches, of which Fig. 1 shows a known wall anchor and Fig. 2 and Fig. 3 show a wall anchor according to the invention.

[0004] In buildings with double-shell wall construction and large, fully enclosed facades 3, steel columns made of profiled steel are used to support the masonry. These columns are installed in the cavity 10 between the shells. The steel columns are anchored at the bottom in the foundation and at the top to the roof truss or a frame structure. One end of the wall anchor 1 is held against a flange 12 of a steel column by means of a gripping element 4. At the other end of the wall anchor 1, an embedding element is provided for embedding it in the outer shell 3 of the cavity wall. The known wall anchors are of such a length that the distance of the column to which the wall anchor is to be attached from the inside of the outer shell must not exceed 35 mm.In recent years, as double-leaf wall constructions have become increasingly thicker to meet higher thermal insulation requirements, there has been a need for wall anchors with greater lengths than conventional anchors. HEB100 and HEB120 supports are typically used. The supports are installed quite close to the outer leaf of the cavity wall and usually with minimal vertical tolerance. However, if this tolerance is somewhat larger, as sometimes happens, for example, if the distance between the supports and the masonry is 7 cm at the bottom and 3 cm at the top, the wall anchors will gradually protrude from the masonry, assuming the anchor length remains constant.Often, it is only during the execution of the masonry work that it is discovered that the supports installed to reinforce the masonry are not perfectly vertical. In this case, the masons might be tempted to use wall anchors that are too long and gradually penetrate the facade wall, if such anchors are the only ones available. If the ends of the wall anchors are covered with only a few millimeters of mortar, there is a high probability that the mortar joints at the level of the wall anchors will crumble or be destroyed.

[0005] From DE 25 38 949 A1 a wall anchor is known which contains several rear and opposite gripping parts with differently sized recesses, of which only one gripping part is used to connect the masonry to a steel support.

[0006] The object of the present invention is to create a wall anchor that can be used in the case of larger cavity wall thicknesses and / or in the case of assembly inaccuracies of built-in steel supports.

[0007] This problem is solved using the subject matter of the features of claim 1.

[0008] Preferably, the features of claim 2 achieve that one and the same wall anchor can be used for mounting on steel supports that are placed at intervals of 35-175 mm from the masonry, while at the same time always maintaining an installation depth of 100 mm.

[0009] Preferably, the features of claim 3 ensure that the upper gripping area (B3, D3 and C3) does not conflict with the inner flange of an HEB 100-120 steel column if the wall anchor is mounted on the outer flange of the column in the lower gripping area (B1, D1 and C1).

[0010] Preferably, with the features of claim 4, the wall anchor according to the invention can be designed in a simpler and more robust manner than the known wall anchors.

[0011] Preferably, the features of claim 5 ensure that the wall anchor according to the invention does not deform or is destroyed when a hammer is used on the contact surfaces.

[0012] As in Fig.As shown in Figure 2, the wall anchor according to the invention provides an embedding part 2 at one end, which is shaped like a trapezoid with two sloping sides and a center line cc extending parallel to the longitudinal direction of the wall anchor 1. The installation depth a of the embedding part is at least 50 mm and at most 100 mm. Further forward, the wall anchor 1 is formed with a first gripping part 4, which has a recess 5 on one side that can receive the end of the flange 12 of a support installed in the cavity behind the outer shell 3.

[0013] The recess 5 provides a bearing surface D1 extending substantially perpendicular to the longitudinal direction of the wall anchor 1, or a stop surface B1 extending substantially parallel to the longitudinal direction of the wall anchor 1, at the bottom of the recess 5. Opposite the bearing surface D1, an elastic element C1 is provided, which serves to hold the bearing surface D1 tightly against the flange 12 of the steel support. The first gripping element 4 is arranged such that the bearing surface D1 can be positioned at a distance b of at least 35 mm and at most 85 mm from the inner side 3i of the outer shell.

[0014] The wall anchor 1 according to the invention is extended in the direction of the center line cc after the first gripping part 4. In the extended part of the wall anchor 1, a second gripping part 6 is formed at a distance from the first gripping part 4, which has a recess 7 on one side that can receive the end of the flange 12 of a support.

[0015] The gripping part 6 is arranged such that the support surface D2 of the second gripping part can be placed at a distance c of at least 80 mm and at most 130 mm from the inside 3i of the outer shell 3.

[0016] After the second gripping element 6, the wall anchor 1 has been extended in the direction of the center line cc. In the extended part of the wall anchor, a third gripping element 8 is formed at a distance from the second gripping element 6, which has a recess 9 on one side that can receive the end of the flange 12 of a support.

[0017] The gripping part 8 is arranged such that the support surface D3 of the third gripping part can be placed at a distance of at least 125 mm and at most 175 mm from the inside 3i of the outer shell 3.

[0018] The third gripping element 8 is offset by 180° relative to gripping elements 4 and 6 by a line parallel to the center line cc, so that the recess 9 is formed in the opposite direction to recesses 5 and 7. This ensures that the third gripping element 8 does not interfere with the inner flange of an HEB 100-120 steel column if the wall anchor is attached to the outer flange of the column using the first gripping element 4.

[0019] The wall anchor 1 is designed on the side of the wall anchor 1 opposite the recesses 5, 7 and 9 with projecting stop surfaces A1, A2 and A3, which serve to hammer in the recesses over the flange 12 of a support.

[0020] The elastic elements C1, C2 and C3 are designed as stirrups, the distance of which from the opposite surfaces D1, D2 and D3 is less than the thickness of the flange 12 of a support.

Claims

[1] A wall anchor (1) stamped from a stainless steel sheet, which in the installed state provides at its far end an embedding part (2) that can be embedded in the outer shell (3) of a cavity wall and is designed as a trapezoid with two sloping sides, the center line (cc) of which runs parallel to the longitudinal direction of the wall anchor (1), and with a trapezoidal base extending perpendicular to the center line (cc), wherein the wall anchor (1) at its other end, which is located on the inside in the installed state, is designed as a first gripping part (4) which has a recess (5) on one side that can receive the end of a flange (12) of a support installed in the cavity (10) behind the outer shell (3), wherein the recess (5) provides a bearing surface (D1) extending substantially perpendicular to the longitudinal direction of the wall anchor (1) and a stop surface (B1) extending substantially parallel to the longitudinal direction of the wall anchor at the bottom of the recess (5),wherein the stop surface (B1) and the bearing surface (D1) form a right angle with each other, wherein an elastic element (C1) is provided opposite the bearing surface (D1) which serves to hold the bearing surface (D1) very close to the flange (12) of the steel support, and wherein the first gripping part (4) is formed on the side opposite the recess (5) with a projecting stop surface (A1) which extends parallel to the longitudinal direction of the wall anchor (1), . characterized bythat the wall anchor (1) is extended after the first gripping part (4) in the direction of the center line (cc), that a second gripping part (6) is formed in the extended part of the wall anchor after the first gripping part (4), and a third gripping part (8) is formed in the extended part of the wall anchor after the second gripping part (6), furthermore that the second gripping part (6) and the third gripping part (8) each have a recess (7, 9) with a bearing surface (D2 and D3) which each extend substantially perpendicular to the center line (cc) of the wall anchor (1), and wherein the recesses (7, 9) each contain a stop surface (B2, B3) which extends substantially parallel to the longitudinal direction of the wall anchor (1), and that an elastic element (C2, C3) is provided opposite each of the bearing surfaces (D2 and D3), wherein the respective elastic elements (C1, C2, C3) are at a distance from the bearing surfaces (D1, D2 and D3) are providedwherein the distance is slightly less than the thickness of the flange (12) of a support, and wherein the distance is designed to press the flange (12) either between the bearing surface (D1) and the elastic element (C1) of the first gripping part (4) until the flange edge abuts the stop surface (B1) of the first gripping part (4), or between the bearing surface (D2) and the elastic element (C2) of the second gripping part (6) until the flange edge abuts the stop surface (B2) of the second gripping part (6), or between the bearing surface (D3) and the elastic element (C3) of the third gripping part (8) until the flange edge abuts the stop surface (B3) of the third gripping part (8), and wherein the wall anchor (1) is formed with projecting stop surfaces (A1, A2, A3) on the side of the wall anchor (1) opposite the recesses (5, 7, 9). [2] Wall anchor according to claim 1, characterized by, that the first gripping part (4) is arranged such that the bearing surface (D1) of the first gripping part (4) can be placed at a distance (b) of at least 35 mm and at most 85 mm from the inside (3i) of the outer shell of the hollow wall, that the second gripping part (6) is arranged such that the bearing surface (D2) of the second gripping part (6) can be placed at a distance (c) of at least 80 mm and at most 130 mm from the inside (3i) of the outer shell of the hollow wall, and that the third gripping part (8) is arranged such that the bearing surface (D3) of the third gripping part (8) can be placed at a distance of at least 125 mm and at most 175 mm from the inside (3i) of the outer shell of the hollow wall. [3] Wall anchor according to claim 1, characterized by, that the third gripping part (8) is offset by 180° relative to the first and second gripping parts (4, 6), so that the recess (9) of the third gripping part (8) is formed in the opposite direction to the recesses (5, 7) of the first and second gripping parts (4, 6) and that the wall anchor (1) is formed on the side of the wall anchor (1) opposite the recesses (5, 7, 9) of the first, second and third gripping parts (4, 6, 8) with the projecting stop surfaces (A1, A2, A3). [4] Wall anchors according to claim 1, characterized by , that the elastic elements (C1, C2, C3) of the first, second and third gripping part (4,6,8) are designed as stirrups, the distance of which from the opposite bearing surfaces (D1,D2, D3) is slightly less than the thickness of the flange (12) of a support. [5] Wall anchor according to claim 1, characterized by , that the stop surfaces (A1,A2A3) are arranged directly opposite the first, second and third gripping parts (4,6,8).

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