Search

EP-4587668-B1 - SYSTEM FOR ANCHORING BUILDING ELEMENTS

EP4587668B1EP 4587668 B1EP4587668 B1EP 4587668B1EP-4587668-B1

Inventors

  • STENVALL, BO
  • Bergander, Björn

Dates

Publication Date
20260513
Application Date
20230914

Claims (9)

  1. System for anchoring building elements, such as building elements (1) comprising at least one first and one second mutually plane-parallel building element sheets (2, 4) which are interconnected by means of a joint (3) placed in the edge areas of the building element in the form of a string of compliant and/or elastic material, wherein the anchoring system comprises a frame piece (20) and an anchoring device (40) connectable to the frame piece comprising an anchor (41) and a gripper (43) pivotally connected to the anchor which can be brought into engagement with the joint of the building element by pivoting when anchoring the building element in the frame piece, and wherein the anchor (41) can be inserted into a channel (27) running in the longitudinal direction of the frame piece, which is formed by two mutually opposite channel walls (28, 29), a bottom segment (30) and an opening (26) mouthing in the upper side of the frame piece (21), characterized in that the anchor (41) in inserted position in the channel (27) can be fixed in position by means of one or more stop screws (61, 62) which fix the anchor (41) relative to the bottom segment (30), and in that the one or more stop screws (61, 62) are supported in the anchor (41) which, when tightened, are screwed out of the anchor for engagement with the bottom segment (30) of the channel (27) and which apply a force to the anchor (41) directed towards tongues (31, 32) which define the opening (26) of the channel in the upper side of the frame piece (21), with the bottom segment (30) acting as a counter support.
  2. System according to claim 1, wherein the anchor (41) is an elongated body with a symmetrical cross-sectional shape and has two uniform sides each comprising a side segment (57) which passes into a bottom surface (58) via a respective radius (r3), and wherein the largest width (w) of the anchor (41) between the side segments (57) essentially corresponds to an inner width (I) of the channel, between the channel walls (28, 29).
  3. System according to claim 2, wherein the anchor (41) has an upper side comprising a flat surface (54) which is limited by two parallel running ridges (55, 56), and wherein the anchoring device (40) further comprises a beam (42) standing on the upper side of the anchor (42) in which the gripper (43) is pivotably supported on a shaft (45) journalled in the beam.
  4. System according to claim 3, wherein the gripper (43) is mounted in a recess (50) formed in the beam (42), wherein a cam (65) is formed in the recess (50) which in the locking position of the gripper engages a groove (66) formed on the gripper.
  5. System according to any previous claim, wherein the frame piece (20) is designed as a hollow profile with a uniform cross-sectional shape, wherein the frame piece (20) is roll-formed from a sheet metal blank and provides a channel (27) formed by bending which opens into an upper side (21) of the frame piece (20), and wherein the walls (28, 29) of the channel (27) providing internal support beams standing between a bottom side (22) of the frame piece (20) and the opposite upper side (21) of the frame piece, wherein the channel walls (28, 29) are designed and effective for absorbing tensile forces.
  6. System according to claim 5, wherein the channel walls (28, 29) are interconnected by a bottom segment (30) which runs parallel to the bottom side (22) of the frame piece (20).
  7. System according to claim 5 or 6, wherein the opening (26) of the channel (27) in the upper side of the frame piece (21) is defined by two mutually opposite tongues (31, 32) which are formed by double folding of the metal sheet in an outer radius (r1), which connects to the upper side of the frame piece (21), and an inner radius (r2), which connects to the nearby channel wall (28, 29).
  8. System according to claim 7, wherein the curvature of the ridges (55, 56) in the upper side of the anchor (41) is adapted to the radius (r2) in the connection of the tongue (31, 32) to the nearby channel wall (28, 29).
  9. System according to any previous claim, wherein the frame piece (20) and the anchoring means (40) are made of steel or stainless steel.

Description

TECHNICAL FIELD OF THE INVENTION The present invention relates to a system for anchoring building elements of the kind that comprises at least one first and one second mutually plane-parallel building element sheets which are connected to each other by means of a joint placed in the edge areas of the building element comprising a string of compliant and/or elastic material. BACKGROUND AND PRIOR ART Examples of building elements of the current type are multi-layered glass panels intended for installation in window or door openings or for cladding a building. An embodiment of the mounting system is particularly adapted and suitable for mounting glass panels of comparatively greater total thickness, such as glass panels comprising glass sheets of comparatively greater thickness or comprising more than two glass sheets, for example 3- or 4-glazed windows, or glass panels that insulate against cold or heat or glass panels with increased security against burglary. However, the anchoring system according to the present invention is not limited to mounting glass panels, but is also useful for mounting building elements of unspecified material having the general structure as described above. Earlier examples of similar systems for anchoring building elements can be found in SE 524721 C2 and in SE530870 C2. Common to the present mounting system and the known equivalents is that they comprise a straight frame piece which is arranged to be attached to a right-sided, typically rectangular, triangular, polygonal or rhomboid-shaped opening in a building wall, whereby a number of frame pieces form a frame encircling the wall opening. Furthermore, the mounting systems include an anchoring device that can be connected to the frame piece comprising an anchor that can be fixed in the frame piece and a gripper pivotably connected to the anchor, which can be brought into engagement with the joint between the building element sheets by pivoting during mounting of the building element in the frame piece, whereby in the connection between anchors and gripper, a mechanical or form-locking latch is arranged to hold the gripper in the engaging position, and where appropriate also effective to hold the gripper removably in the non-engaging position. In the mentioned known anchoring systems, the frame piece is made in the form of an extruded light metal profile, with homogenous cross-section, having a longitudinal channel intended for inserting and receiving the anchor of the anchoring device via an opening to the channel in the upper side of the frame piece. The opening of the channel has inwardly curved edges. In the known anchoring device, the gripper is connected to the anchor by means of at least one screw which extends through an elastic body consisting of plastic or rubber inserted between the anchor and the gripper. The elastic body is designed so that on the one hand it holds the gripper pivotably from a non-active position and on the other hand effectively fixes the gripper in its active position wherein the gripper engages with a claw in the joint between the building element sheets. In the active position of the gripper, the elastic body exerts a pulling force against the anchor whereby the anchor is lifted into compression against an underside of the inwardly curved edges of the channel opening. It is an inevitable fact that components made of light metal, such as aluminum, have limited ability to withstand such high temperatures as may occur in a fire. It is another inevitable fact that synthetic materials such as plastic or synthetic rubber compounds exposed to large changes in temperature and humidity and exposed to strong UV radiation may lose some of their elasticity over time. It is understood that, under extreme conditions, this can mean a potential risk of jeopardizing the anchoring of the building element. SUMMARY OF THE INVENTION It is a general aim of the invention to provide an alternative system to the known mounting systems for anchoring building elements of the kind mentioned in the introduction above. In particular, the invention aims to provide a system for anchoring building elements that avoids potential risks that may arise under extreme conditions. A specific aim of the invention is to provide a system for anchoring building elements that offers high safety in the event of a fire due to that the components forming the anchoring system can withstand high temperature for a longer period of time without losing their operational ability. These aims are achieved according to the present invention through a system for anchoring building elements designed in accordance with patent claim 1. Advantageous embodiments and combinations of components included in the anchoring system appear in more detail from subordinate patent claims. Briefly, according to the invention, a system for anchoring building elements is disclosed, such as building elements comprising at least one first and one second mutually plane-paral