EP2899354A1 - Front wall assembly system for partially projecting construction elements and wall structure with front wall assembly system - Google Patents

Abstract

The invention relates to a wall mounting system for teilauskragende components (B), such as windows (F) and doors, in a wall opening (4) an outer wall (5) with outside insulation (W), wherein the wall opening (4) has a reveal (6) to which the respective partially projecting component (B) is determined load-bearing. So that a component (B) can be mounted without difficulty and avoiding further thermal bridges from the wall opening (4) on the soffit (6), it is proposed that on the outside on the outside wall (5) and in alignment or approximately flush, ie in particular at least Aligning substantially, to the soffit (6) a header element (2) for lateral stabilization of the soffit (6) is provided.

Description

The invention relates to a wall mounting system for teilauskragende components, such as windows and doors, in a wall opening an outer wall with outside insulation, wherein the wall opening has a soffit on which the teilauskragende device is determined load-bearing. The invention further relates to a wall structure with the pre-wall mounting system.

One problem with the choice of the mounting position of the window in the wall is a possible mold formation, which can occur under normal conditions even after prolonged relative humidity of 80% in near-surface areas of a wall structure. As a criterion for the critical conditions for mold formation, a so-called 13 ° C isotherm is used in a wall construction, in the range of which the dew point can be fallen below with the risk of mold growth. Therefore, it is essential that the 13 ° C isotherm is outside the outside wall and, if present, outside a sealing plane of a wall-mounted seal. Furthermore, the device should be arranged in the level of thermal insulation. Depending on the strength of the proposed insulation, therefore, the component is more or less strongly cantilevered at the wall opening established.

A common definition of the teilauskragenden device on the soffit by means of screw comes to its limits, since they must be set by the partial overhang of the device close to the outside edge of the soffit, which breaks out easily.

A common solution is the use of special anchors, by means of which a determination of the component can be done in the middle of the soffit. When installed, these anchors have a relatively large unsupported length, whereby the risk of a floating fixing of the component is given.

Another solution will be in the DE 298 16 780 U1 described, according to the rigid for attachment of the component rails are provided which engage the component and the wall opening and are arranged to vote on the insulation with respect to their relative position perpendicular to the wall opening adjustable. Both of the latter solutions are complex and also form easily thermal bridges.

The object of the invention is to provide a generic Vorwandmontagesystem, by means of which a component can be mounted without difficulty and while avoiding further thermal bridges from the wall opening teilauskragend to the soffit.

The stated object is achieved by the features of claim 1. Advantageous developments are described in the subclaims. The stated object is already achieved in that on the outside of the outer wall and in alignment or approximately flush, so in particular at least substantially aligned, to the reveal an attachment element for lateral stabilization of the soffit is provided.

Thanks to this additional attachment element, the soffit can be fracture-mechanically stabilized. The attachment element acts as a wall reinforcement, but this reinforcement is used very specifically to the critical area or possibly at the critical areas of the soffit of the wall opening, namely where the relevant teilauskragende device, such as windows and door, load-bearing supported. Our own experiments confirm this positive assessment, according to which the component can be fixed by means of screw elements in the outer edge region of the respective soffit and even close to the outer soffit edge of the soffit.

Thus, the teilauskragende component with up to half its depth and beyond the wall opening protrude. The device can protrude with up to a quarter, preferably up to a half or up to two thirds and more of its depth. Nevertheless, its attachment to the outer wall in the reveal of the wall opening can be done. With the depth of the component, the dimension is meant in which the component extends in the installed position perpendicular to a wall opening plane. This also applies to the soffit. Since the reinforcement of the outer wall takes place by means of the attachment element from the outside, this can not result in a corresponding additional thermal bridge. The term soffit should also include that of the garb.

With the aligned or approximately aligned, so in particular at least substantially aligned arrangement is meant that in terms of thermal insulation and the general structure of the wall opening or the soffit is advantageous that the arrangement is in alignment, about this in a non-aligned recessed arrangement no thermal bridges or to not create a projection or step into the window opening when the arrangement is not aligned above the soffit. The aligned arrangement includes possible deviations due to dimensional and / or installation tolerances. Possible However, with regard to the function of the attachment element, in particular with regard to the prevention of breaking out of the outer wall during the introduction of the bore, is also an approximately or substantially aligned arrangement.

The attachment element can be arranged laterally at the level of at least sections of the reveal, which are provided for the determination of the respective partially projecting component. The attachment element can thus be arranged in the amount of an intended attachment region for the component and thus counteract an immediate danger of breakage when introducing, for example, a bore for fixing a mechanical fastening element for the projecting component to the soffit. These sections can thus be provided adjacent to the fastening element on the outside on the outer wall. The attachment element may also be arranged below and / or above the component in each case at the level of at least these sections of the soffit. Advantageously with respect to a similar structure over the circumference of the wall opening, the attachment element can be provided on all sides of the wall opening. They can cover the entire component. In this case, the attachment element arranged below and above the wall opening can overhang the laterally arranged attachment elements. Preferably, the attachment elements are frictionally against each other. As a result, the attachment elements can be combined into one unit and support each other.

The soffit can have laterally arranged regions with the sections for mounting the intended partially projecting component. Constructively advantageous, the attachment element can extend over the entire length of the respectively associated region of the soffit.

The assembly of the intended teilauskragenden component may laterally to perpendicular or approximately perpendicular Sections of the soffit or circumferentially provided for soffit. These perpendicular or approximately perpendicularly arranged reveal segments are in a conventional polygonal wall opening vertical reveal sides, which are arranged at an angle to the adjacent reveal side. That is, in a right-angled wall opening, the soffit sides adjacent to the vertical reveal side are arranged horizontally.

The attachment element can thus rest flat on the outside of the support wall. For this purpose, the attachment element can have an attachment side face on which the attachment element is fixed on the outer wall. This system side surface may be formed adapted to a contour of the outer wall. This can be counteracted over the entire contact surface of a possible breaking out of the outer wall. Preferably, attachment element and outer wall abut each other in an un-curved plane. In the installation position, the attachment element is preferably located directly on the outside of the outer wall. It can indirectly rest for example via a sealing film on the outside of the outer wall.

In principle, the attachment element can have any contour which is suitable for achieving a desired mechanical stabilization by means of the attachment element mounted on the outside. Preferably, the attachment element may have an uncurved contact side surface.

The attachment element may have a prismatic basic shape, preferably the shape of a straight prism. In a simplified construction, the attachment element can have a rectangular, preferably non-square cross-section. In a non-square cross-section with two larger and two smaller sides, the contact surface may be one of the two major sides. The attachment element can also have a square cross-section. The prismatic shape of the attachment element can also be an approximately triangular Base surface and have three side surfaces. Preferably, two of these three side surfaces can be arranged perpendicular to each other. One of these two mutually perpendicular side surfaces can be applied as an abutment side surface for abutment against the outer wall and the other of these two side surfaces can be arranged parallel to the associated reveal.

In a wall construction, a width of the attachment element pointing toward the outer wall may be greater than a depth of the attachment element arranged perpendicular to the outer wall. Furthermore, the height of the attachment element can be made larger than the width. Preferably, the width of the attachment element is greater than a depth of the introduced for fixing the intended component in the soffit hole. In this way, the risk can be counteracted that, for example, as a result of increased drilling pressure in the bottom of the hole, in the areas of the outer wall projecting the bore outbreaks occur. In this case, the width of the attachment element by at least 5%, preferably by at least 20% or at least 40% greater than the hole depth of the hole for fixing the window F at the soffit.

The depth of the attachment element may be equal to or about equal to a thickness of the arranged on the outside of the outer wall thermal insulation. Thus, the thermal insulation can be arranged in a wall structure with the inventive prewall mounting system without offset directly to the attachment element subsequently. Preferably, the depth of the attachment element is less than the thickness of the disposed on the outside of the thermal insulation. This can form an offset on the outside in the transition from the attachment element to the thermal insulation out, which can be compensated with further thermal insulation. The attachment element can thus be coated on the outside. This has the advantage that the thermal insulation behavior of the attachment element that of the outside attached thermal insulation can be adjusted. Preferably, the depth of the attachment element is at most 80%, preferably at most 60% or at most 50% of the thickness of the thermal insulation. The thermal insulation material can be self-supporting.

The attachment element may be formed in one piece. It can be made of a preferably filled load-removing rigid foam material, in particular polyurethane-based. For example, it may be made of Styrodur, Styrofoam, Styrofoam or Neopur, preferably with embedded carbon.

The header may be formed of a composite material having a region of a stiffer material, such as fiber cement. In this way, a desired strength of the attachment element can be adjusted specifically. This area can be assigned in installation position of the outer wall. He may have the plant side surface, with which it rests in the installed position on the outside of the outer wall. This design of the attachment element is, for example, favorable when the same, for example due to intended insulation, has a smaller depth and yet should have a certain strength for reinforcing the outer wall against outbreaks when screwing the window frame close to the edge soffit / outside. The area may be wedge-shaped, for example, and this tapers in the installed position down to a preferably flattened tip. This wedge shape allows a sliding transition of the attachment element in its thermal insulation and / or strength behavior. The wedge-shaped portion may have a substantially triangular longitudinal section at a right angle or approximately right angle. It can be flattened the tapered corners. Constructively simple and easy to manufacture, the area can also be plate-shaped. preferably preferably made of a rigid plate, wherein the attachment element rests with the rigid plate on the outer wall. The residual body of the attachment element may be formed from the rigid foam material. Rest body and plate can be glued together.

Preferably, the depth of the area or, in the case of a non-plate-like formation of the area, an average depth, based on a total depth of the attachment element, a maximum of 80%, preferably at most 50% or at most 30% of the depth of the rest body.

The attachment element can also serve as a thermal insulation element in relation to the wall structure, in particular on the outer wall. In this way it can be avoided that the attachment element acts as a thermal bridge. The attachment element can have a thermal conductivity of ≤0.15 W / mK. Its thermal conductivity may be ≤0.1 to 0.12 W / mK, preferably ≤0.06 to 0.08 W / mK. It can easily be in a range typical for thermal insulation materials of 0.035 to 0.04 W / mK.

In a further embodiment of the prewall mounting system, the attachment element is adhesively bonded to the outer wall. In this case, an adhesive material used for bonding can be formed at the same time as a vapor barrier and as an air seal against a passage of moisture or air from the outside. The bonding is preferably carried out flat. Thus, a force transmitted via the bond can be transmitted via a voltage corresponding to the gluing surface. This is advantageous in, for example, exterior walls with somewhat less strength. For these, the pretext element per se is suitable.

Alternatively or additionally, the attachment element can be fixed on the outside wall by means of a mechanical fastening element, in particular by means of a Schaub element. This is easier, especially for an untrained user. Furthermore, greater forces can be achieved for attachment than in the bond. Further is this attachment essentially weather independent. Here, the mechanical attachment can serve purely as a backup in case of adhesive failure. The mechanical attachment can also serve to fix the position of the freshly glued attachment element until the adhesive used has hardened.

The attachment element may have a through hole, preferably designed as a stepped bore, for the fastening element, in particular the screw element. Through the stepped bore, the screw with screw head can be completely absorbed in the Durchgansbohrung. Preferably, the passage bore is introduced perpendicular or approximately perpendicular to the outer wall in the attachment element. The through-hole can be covered with a thermal insulation material towards the outside of the wall structure.

In an alternative solution, an already mentioned above wall structure with the wall opening having outer wall with outside insulation and a header element having a prewall mounting system may be provided according to one of the embodiments described above. The wall opening may have a receiving space for the teilauskragende component. The attachment element can be fixed on the outside of the outer wall and in the longitudinal direction of the soffit and with respect to a direction perpendicular to the window plane in alignment with the soffit.

The component can be arranged by means of connecting elements inside the wall opening at a lateral distance to the reveal on the same held in the receiving space. The connecting elements may be screw elements or anchor elements.

In a development of the wall structure can be provided that a pointing to the wall opening width of the attachment element is greater than or equal to a perpendicular to the outer wall arranged depth of the attachment element is.

Further, in the wall structure, the depth of the attachment member may be equal to or approximately equal to the thickness of the thermal insulation disposed on the outside of the outer wall. The depth of the attachment element may also be less than the thickness of the arranged on the outside of the outer wall thermal insulation. In this case may be provided to improve the thermal insulation on the attachment element, that the attachment element is covered from the outside with an insulating material. This can then preferably connect flush to the preferably flush with the attachment element thermal insulation. The ratio between the depth of the attachment element to the thickness of the externally applied thermal insulation, for example, be greater than 1/4, preferably greater than 1/3 or 1/2. The depth of the attachment element can also be greater than that of the thermal insulation.

FIG. 1

eine Frontansicht eines Wandaufbaus mit einer ersten Ausführungsform eines Vormontagesystems mit Vorsatzelement,

FIG. 2

eine Schnittansicht gemäß dem Schnittverlauf II-II in Figur 1,

FIG. 3a und 3b

jeweils eine Seitenansicht des Vorsatzelements,

FIG. 4

eine Schnittansicht gemäß dem Schnittverlauf II-II in Figur 1, jedoch mit einer zweiten Ausführungsform des Vormontagesystems mit Vorsatzelement,

FIG. 5

eine Schnittansicht gemäß dem Schnittverlauf II-II in Figur 1, jedoch mit einer dritten Ausführungsform des Vormontagesystems mit Vorsatzelement und

FIG. 6a und 6b

jeweils eine Seitenansicht einer Ausführungsform des Vorsatzelementes.

The present invention will be explained in more detail below with reference to an embodiment of the pre-wall mounting system shown in a drawing. In the drawing show:

FIG. 1

a front view of a wall structure with a first embodiment of a pre-assembly system with attachment element,

FIG. 2

a sectional view according to the section line II-II in FIG. 1 .

FIG. 3a and 3b

each a side view of the attachment element,

FIG. 4

a sectional view according to the section line II-II in FIG. 1 but with a second embodiment of the pre-assembly system with attachment element,

FIG. 5

a sectional view according to the section line II-II in FIG. 1 but with a third embodiment the pre-assembly system with attachment element and

FIG. 6a and 6b

each a side view of an embodiment of the attachment element.

In the FIGS. 1 . 2 . 4 and 5 In each case, a view of a pre-wall mounting system 1 with a header element 2 for teilauskragende components B is shown here in connection with a wall structure 3. The component B is designed here as a window F, which is inserted into a wall opening 4 of an outer wall 5 of the wall structure 3. The wall opening 4 here has a conventional reveal 6, which can also be designed as garments. At this reveal 6, the window F is determined load-bearing, whereby it exemplarily here with about one third of its window frame depth ft protrudes from the wall opening 4. The intent element 2 is defined from the outer wall 5 and here in alignment with the soffit 6. As a result, the outer wall 5 and thus the soffit 5 in the region of the attachment element 2 is mechanically stabilized. This makes it possible that, as in FIG. 2 it can be seen that the window can be fixed close to the soffit 6 and outer side 7 of the outer wall 5 formed edge 8 without an outbreak at the edge 8 is to be feared.

In the figures, except for one provided in the wall structure 3 on the outside of the outer wall 5 thermal insulation W, all other insulation and cleaning measures on the window F omitted for clarity, so that the window F spaced to the reveal 6 is shown held. All figures are shown purely schematically and omitting details that are not relevant to the invention.

In FIGS. 3a and 3b the attachment element 2 is shown in each case in a side view. The attachment element 2 has a prismatic basic shape with side surfaces 9 arranged at right angles to one another, of which one is provided as an attachment side surface 9.1. The attachment element 2 has a right-angled non-square cross section. It is integrally formed. The attachment element 2 is made of a filled load-removing rigid foam material based on polyurethane.

The soffit 6 of the right-angled wall opening 4 has two vertically extending lateral regions 10 with the sections 12, in which the window F is fixed in each case. Here, the fixing takes place in each case by means of a screw 11 in two sections 12 of each area 10 (FIG. FIG. 1 ). For this purpose, in the reveal 6 in each case a bore 13 for receiving a fastener 11 formed here as a screw member which connects the window F with the support wall 5 load-bearing.

In the wall structure 3, a height h of the attachment element 2 facing the wall opening 4 is greater than a depth t of the attachment element 2 arranged perpendicular to the outer wall 5. The width b of the attachment element 2 is greater than a borehole depth bt of the introduced into the soffit hole 13. This effectively counteracts the risk of breaking out on the outer wall in height of the borehole bottom.

There is associated with each lateral region 8 of the soffit 6 an attachment element 2 which extends in reinforcement of the outer wall 5 in the respective region 8 over the entire length of the lateral region 8. The soffit 6 extends perpendicular to the outer side 7 of the outer wall. 5

The intent element 2 lies with its non-curved system side surface 9.1 outside on the entire surface of the outer wall 5 at. The attachment element 2 closes the front side and with a side surface 9 facing away from the wall opening 4 on the heat insulation W provided on the outside.

According to FIGS. 2, 3 and 4 is the attachment 2 under training a first adhesive layer 14.1 extending over the contact side surface 9.1 is adhesively bonded to the outer wall 5, the first adhesive layer 14.1 being formed here both as a vapor barrier and as an air seal against a passage of moisture or air from the outside. The thermal insulation W is glued by means of a conventional adhesive to form a second adhesive layer 14.2 with the outside 7 of the outer wall 5.

According to FIG. 4 the attachment element 2 is additionally fixed on the outside wall 5 on the outside by means of mechanical fastening elements, which are also designed here as shielding elements 11. This screw connection of the attachment element 2 with the outer wall 5 serves primarily as a fixing aid for the attachment element 2 during a curing time of the adhesive in the adhesive layer 14.1. The attachment element 2 has, for each screw element 11 provided here, a through hole 15 designed as a stepped bore, which is introduced into the attachment element 2 perpendicular to the attachment side face 9.1. How out FIG. 1 it can be seen, two through holes 15 and two holes 13 are provided for a region 10 and thus per attachment element 2, wherein these are arranged alternately to each other. The running as a stepped bore through holes 15 are filled after screwing the attachment element 2 with the outer wall 5 with insulating material 16, which covers the sunk each screwed element 11 at the head.

In both embodiments of the front wall mounting system 1 and the wall structure 3 according to the FIGS. 2 and 3 the thermal insulation W is applied laterally to the respective attachment element 2. While according to the embodiment of the wall structure 3 in FIG. 2 the depth t of the attachment element 2 is equal to the thickness d of the thermal insulation W, so that the attachment element 2 and the thermal insulation W are flush against each other, according to the embodiments of the wall structure 3 in FIG FIG. 4 and FIG. 5 the Depth t of the attachment element 2 here about 40% smaller than the thickness d of the thermal insulation W. To the heat insulation of the attachment element 2, the same is here additionally covered by a tailor-made heat-insulating strip 17 from the outside. In this case, strips 17 and thermal insulation W are made of the same material and are self-supporting.

In FIG. 5 is a further sectional view of the wall structure 3 with the pre-wall mounting system 1 according to the section line II-II in FIG. 1 , but here with a third embodiment of the pre-assembly system 1 with attachment element 2 shown. In this case, this embodiment differs from the according to FIG FIG. 3 in that the attachment element 2 in FIG. 5 is designed as a composite piece. It has a region 18, which is formed of a stiffer material, here fiber cement, as the rigid foam material. As in FIG. 5 can be seen, this area 18 is here plate-shaped and facing in the installed position of the outside of the outer wall 5, wherein the area 18 has the plant side surface 9.1. The remaining body 19 of the attachment element 2 is made of the rigid foam material. Here, the area extends over approximately 30% of the depth t of the attachment element 2.

In Figures 6a and 6b an embodiment of the attachment element 2 described under Figure 5 is shown in a side view. In this case, the region 18 of fiber cement is wedge-shaped, wherein the residual body 19 is also wedge-shaped in addition to a cuboid overall shape. This wedge shape is essentially triangular in section here.

In installation position in the wall structure 3, the wedge shape of the area 18 widens towards the soffit 6. This is indicated in the figures 6a and 6b by dashed lines of soffit 6 and outside 7 of the outer wall 5. Thus, the particularly vulnerable to breaking edge 8 is more protected. According to FIG. 6b the wedge-shaped shape of the region 18 is flattened at the pointed corners, whereby they are protected against breakage before or during their installation.

LIST OF REFERENCE NUMBERS

1

pre-mounting system

2

intent element

3

wall construction

4

wall opening

5

outer wall

6

soffit

7

outside

8th

edge

9

side surface

9.1

Conditioning side face

10

Area

11

screw

12

section

13

drilling

14.1

first adhesive layer

14.2

second adhesive layer

15

Through Hole

16

insulation

17

strip

18

Area

19

Carcass

b

width

bl

Hole depth

d

thickness

ft

A window depth

H

height

bt

Hole depth

t

depth

B

module

F

window

W

thermal insulation

Claims (15)

Front wall mounting system for teilauskragende components (B), such as windows (F) and doors, in a wall opening (4) of an outer wall (5) with external heat insulation (W), wherein the wall opening (4) has a reveal (6) at which the each partially cantilevered component (B) is defined load-bearing, characterized in that on the outside of the outer wall (5) and aligned or approximately aligned, so in particular at least substantially aligned, to the reveal (6) a header element (2) for lateral stabilization of the soffit (6) is provided. Pre-wall mounting system according to claim 1, characterized in that the attachment element (2) is arranged laterally at the level of at least portions (12) of the reveal (6), which are provided for the determination of the respective partially projecting component (B). Pre-wall mounting system according to claim 1 or 2, characterized in that the assembly the intended partially projecting component (B) is provided laterally to the sections (12) of the soffit (6) or circumferentially to the soffit (6) arranged perpendicularly or approximately vertically. Pre-wall mounting system according to claim 2 or 3, characterized in that the reveal (6) has laterally arranged areas (10) with the sections (12) for mounting the intended teilauskragenden component (B) and that the attachment element (2) over the entire length of the respectively assigned area (10) of the soffit (6). Pre-wall mounting system according to one of claims 1 to 4, characterized in that the attachment element (2) has an abutment side surface (9.1) on which the attachment element (2) on the outer wall (5) is fixed. Pre-wall mounting system according to one of claims 1 to 5, characterized in that the attachment element (2) has a polygonal cross-section, in particular a rectangular, triangular or trapezoidal cross-section. Pre-wall mounting system according to one of claims 1 to 6, characterized in that the attachment element (2) is made of a preferably filled, load-removing rigid foam material, in particular polyurethane-based. Pre-wall mounting system according to one of claims 1 to 7, characterized in that the attachment element (2) with the outer wall (5) glued arranged and / or
by means of a mechanical fastening element, in particular by means of a Schaubelementes (11), on the outside is fixed to the outer wall (5). Pre-wall mounting system according to one of claims 5 to 8, characterized in that the attachment element (2) as a composite workpiece with a plant side surface (9.1) having region (18) is made, which is formed from a hard material, such as fiber cement. Pre-wall mounting system according to claim 9, characterized in that the region (18) of the attachment element (2) is plate-like or wedge-shaped. Wall construction with a wall opening (4) having outer wall (5) with outside insulation (W) and a header element (2) having prewall mounting system (1) according to one of claims 1 to 10, wherein the wall opening (4) has a receiving space for a partially projecting Component (B) and the attachment element (2) on the outside (7) of the outer wall (5) and in the longitudinal direction of the soffit (6) and with respect to a direction perpendicular to the window plane is aligned or approximately aligned with the soffit (6). Wall structure according to claim 11, with a in an installed position in the wall opening (4) used component (B), characterized in that component (B) by means of connecting elements inside the wall opening (4) on the reveal (6) is supported. Wall structure according to claim 11 or 12, characterized in that a to the outer wall (5) facing width (b) of the attachment element (2) is greater than or equal to a perpendicular to the outer wall (5) arranged depth (t) of the attachment element (2) , Wall structure according to claim 13, characterized in that that the depth (t) of the attachment element (2) is equal to or approximately equal to a thickness (d) of the on the outside (7) of the outer wall (5) arranged thermal insulation (W). Wall structure according to claim 13, characterized in that the depth (t) of the attachment element (2) is less than the on the outside (7) of the outer wall (5) arranged thermal insulation (W) and that the attachment element is externally covered with thermal insulation.

Images