EP2236692B1 - Facades cladding system with facade panels and attachment elements as well method for fixing a facades cladding system - Google Patents

Description

TECHNICAL AREA

The present invention relates to a facade cladding system according to claim 1 and a method of assembling a cladding system according to claim 13.

STATE OF THE ART

From the prior art, a variety of systems for mounting facade panels to substructures, such as a support structure or on a wall, known.

For example, a system from the US 2005/0262797 known in which the facade panels are firmly nuggeted with the substructure.

In the course of the ever shorter construction times, which is required by the respective client, but has shown in terms of efficiency of assembly that this must be better. Furthermore, the type of installation from top to bottom has proved to be disadvantageous in some buildings.

Due to the fixed mounting by the screw, the expansion due to the thermally induced deformations is only possible on one side, in the case upwards.

PRESENTATION OF THE INVENTION

Starting from the prior art, the invention has for its object to provide an alternative system for fixing a facade panels. Furthermore, it is an object of the present invention to provide a fastening element for facade panels, which allows a simple and efficient installation. Another object of the invention is to provide a fastener, which allows mounting from bottom to top, ie opposite to the direction of gravity.

Such a problem is solved by a fastening element according to claim 1. Accordingly, a fastening element for fastening facade panels to a substructure with a surface has a fastening section and a retaining section adjoining the fastening section. The attachment portion has a front and a back, which is aligned against the substructure. The holding section has a front side and a rear side, which rear side is offset from the rear side of the holding section, so that there is a gap between the fastening element and the plane defined by the surface of the substructure, in which parts of the facade panels can protrude ,

The gap is thus provided by the substructure and the fastener. Such fasteners can be attached to the substructure in a simple manner, the facade panels can then be hung.

Preferably, the holding portion on a stop surface, which is arranged opposite the mounting portion, wherein parts of the facade panels rest on this abutment surface.

Advantageously, the holding portion has a variable thickness, wherein the thickness in a the abutment surface adjoining portion for static reasons is greatest. As a result, the facade panels can be hung particularly well.

A facade cladding system for attachment to a substructure comprises a Variety of stacked and / or juxtaposed facade panels and a variety of fasteners. The cladding panels include an upper hanger portion, a panel portion adjacent thereto, and a lower hanger portion, portions of the upper hanger portion projecting into a space created by an upper fastener, and portions resting on the abutment surface of said fastener. The lower Einhängabschnitt protrudes into a space created by a lower fastener space.

According to a method for assembling a facade cladding system comprising a plurality of facade panels and fastening elements, the fastening elements are fastened to a substructure in a first step, so that the interspaces are provided. In a subsequent step, the lowermost facade panels are hung, and in a subsequent step, the facade panels to be arranged above the lowermost facade panels are hooked in sequence.

The substructure preferably has a multiplicity of openings arranged in a grid, into which the fastening element can protrude or protrude, thus providing the connection between the fastening element and the substructure.

Further embodiments are described in the dependent claims.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine Seitenansicht eines auf einer Unterkonstruktion montierten Fassadenbekleidungssystems mit Fassadenpaneelen und Befestigungselementen gemäss der vorliegenden Erfindung;

Fig. 2

eine Detailansicht von Figur 1;

Fig. 3

eine Detailansicht von Figur 2;

Fig. 4

eine perspektivische Ansicht von zwei Fassadenpaneelen im Eingriff mit einem Befestigungselement;

Fig. 5

eine perspektivische Ansicht des Befestigungselementes nach den vorhergehenden Figuren;

Fig. 6

eine Seitenansicht des Befestigungselementes nach Figur 4;

Fig. 7

eine Ansicht von vorne des Befestigungselementes nach Figur 4;

Fig. 8

eine Seitenansicht des Fassadenbekleidungssystems mit einer Fassadenpaneele einer anderen Ausführungsform; und

Fig. 9

eine Detailansicht nach Figur 8.

Preferred embodiments of the invention will be described below with reference to the drawings, which are given by way of illustration only and are not to be interpreted as limiting. In the drawings show:

Fig. 1

a side view of a mounted on a substructure facade cladding system with facade panels and fasteners according to the present invention;

Fig. 2

a detailed view of FIG. 1 ;

Fig. 3

a detailed view of FIG. 2 ;

Fig. 4

a perspective view of two facade panels in engagement with a fastener;

Fig. 5

a perspective view of the fastener according to the preceding figures;

Fig. 6

a side view of the fastener after FIG. 4 ;

Fig. 7

a view from the front of the fastener after FIG. 4 ;

Fig. 8

a side view of the facade cladding system with a facade panels of another embodiment; and

Fig. 9

a detailed view after FIG. 8 ,

DESCRIPTION OF PREFERRED EMBODIMENTS

In the FIG. 1 For example, a cladding system according to one embodiment of the present invention is shown. The facade cladding system comprises a plurality of stacked facade panels 1 and fasteners 2. In the FIG. 1 four facade elements 1 or 1a, 1b, 1c, 1d are shown by way of example. With the facade cladding system, a facade can be provided on a substructure 3. The design of the substructure 3 is immaterial, but it is important that the fasteners 2 can be attached to the substructure. The substructure 3 is typically a profiled metal scaffold or a flat wall of a building. In the present embodiment, a metal frame composed of profiles serves as a substructure 3. The substructure 3 essentially comprises a surface 32 which is to be covered by the facade panels 2.

The fastening elements 2, the training of which is described below, are here connected to the substructure 3 at regular intervals by means of screws 4. Alternatively, rivets can be used. The fastening elements 2 provide a gap 5 between the fastening element 2 and the substructure 3. Accordingly, this intermediate space 5 is bounded by the substructure 3, in particular the surface 32 and by the fastening element 2, and serves to receive parts of the facade panels 1. Accordingly, the parts of the facade panels 1 protrude into the intermediate space 5 and are thus connected to the substructure 3.

The lowermost facade element 1a is fastened at the top with an upper fastening element 2a and at the bottom with a screw 4 to the substructure. In this case, the fastening element 2a is attached to the substructure in a first step and then the lowest façade panels 1a can be hung on the fastening element 2a. The last step is still the installation of the screw 4, which connects the bottom facade panels 1 a with the substructure 3. Alternatively, instead of the screw 4, a fastening element 2 may be provided in the region of the lowermost facade panels. Accordingly, all lying at the same height and successively arranged facade panels are bolted to the substructure.

For all other façade panels 1b, 1c and 1d arranged above the lowest facade panels 1a, an upper fastening element 2b, 2c, 2d is provided in each case. In this case, the corresponding facade panels 1 with the corresponding fastening element 2 and the fastening element 2 of the arranged below the corresponding facade panels 1 facade panels 1 in conjunction. For the façade panels 1b, this means that they are in communication with the fastening element 2b upwards and with the fastening element 2a downwards.

The FIGS. 5 to 7 show a fastener 2 according to an embodiment of the present invention. The fastening element 2 essentially comprises a fastening section 20 and a retaining section 21 adjoining the fastening section 20.

The attachment section 20 essentially serves to fasten the attachment element 2 to the substructure 3. In the present embodiment, the attachment section 20 has a front side 22 and a rear side 23. An opening 26 penetrates the attachment portion 20 from the front 22 to the rear 23. The opening serves to receive a fastener, such as a screw 4 or a rivet, which protrudes through the attachment portion 20 and can be associated with the substructure 3.

The holding section 21 likewise comprises a front side 24 and a rear side 25. The rear side 25 of the holding section 21 is arranged offset from the rear side 23 of the fastening section 20. This means that the two back sides 23, 25 do not lie in a common plane. Due to the staggered arrangement of the two backs of the gap 5 between the holding portion 21 and the substructure 3 is created. In other words, it can also be said that the holding portion 21 is formed bent from the fixing portion 20. The surface of the substructure 3 is in the FIG. 6 shown schematically by a dashed line. It can be seen how the gap 5 between the back 25 and the substructure 3 is provided. The offset between the rear side 25 and the rear side 23 at the same time defines the inside width S of the intermediate space 5.

The holding portion 21 is bounded by a stopper surface 33, which is disposed opposite to the fixing portion 20. On the stop surface 33 parts of the facade panels can rest.

Optionally, the fastening element 2 may have a support section 27. The supporting portion 27 adjoins the fixing portion 20 on the side opposite to the holding portion 21. The supporting section 27 essentially serves to support the fastening element 21 with respect to the substructure 3. The surface 30 facing the substructure 3 can have the surface 30 partially overlapping the recess 31. Due to the arrangement of the recess 31, the supporting effect on the substructure can be ensured.

Furthermore, the fastening element 2 can comprise anti-rotation elements 28. In the present embodiment, the anti-rotation elements 28 are arranged in the region of the support section 27. The anti-rotation elements 28 shown here find good application, for example, in a substructure 3 formed from profiles. The anti-rotation elements 28 are arranged on the outer edge of the support portion 27 and are formed such that the anti-rotation elements 28 on the plane of the back 23 of the holding portion 22nd extend. The clear width B between the two anti-rotation elements 28 substantially corresponds to the corresponding width of the profile used in the substructure 3. The two anti-rotation elements 28 stand on the left or right side of the profile, whereby it can be prevented that the fastening element 2 can rotate about the central axis of the opening 26 during the assembly process and in the mounted state.

In an alternative embodiment, which can be used for example in flat walls, the anti-rotation element has the shape of another opening and not shown here. The opening may be arranged, for example, in the attachment section or in the support section 27. In order to obtain the anti-rotation effect, an additional screw is passed through this opening, wherein the screw is then in communication with the substructure 3.

At the upper end of the holding section 21, the holding section 21 has a leg 29 which extends over the front side 24. The function of the leg 29 is described below in conjunction with the FIGS. 2 to 4 described.

With the help of Figures 2 and 4 Now the embodiment of a possible facade panels 1 is set forth. The facade panels 1 has the shape of a profile which extends along a longitudinal axis L. In the Figures 2 and 3 the facade panels 1 are shown in a side view, in which case the longitudinal axis extends perpendicular to the page plane.

The facade panels 1 essentially comprises an upper hooking section 10, a panel section 11 and a lower hooking section 12. The panel section 11 is arranged between the upper hooking section 10 and the lower hooking section 12.

The panel section 11 is substantially flat, so that in the mounted state, the facade panels give a flat surface. Other shapes are also conceivable.

The upper Einhängabschnitt 10 extends with a first leg 13a perpendicular to the panel portion 11. The leg 13a is followed by another leg 13b, which extends in substantially the same direction as the panel portion 11. At the end of the leg 13b a Einhängschenkel 13c is arranged, which in turn extends perpendicular to the leg 13b and is bent at the end with a portion 13d. The section 13d then projects into the intermediate space 5 between the fastening element 2 and the substructure 3, while the leg 13c rests on the abutment surface 33 of the fastening element 2.

In other words, it can be said that the leg 13b, 13c and the portion 13d form a gap 17 which can receive the holding portion 21 of the fastening element 2. The facade panels 1 is located with the gap 17 associated leg 13c on the abutment surface 33 of the holding portion 21.

The fastening element 2 has in the region which comes to lie in the intermediate space 17 at partial sections to a thickness which substantially corresponds to the clear width of the intermediate space 17. In the present embodiment, the distance from the back 25 to the front 24 of the leg 29 corresponds to the corresponding distance. In other words, it can also be said that the holding section 21 has a variable thickness, wherein the thickness is greatest in a section adjoining the abutment surface 33. The subsequent section is provided here essentially by the leg 29. The thickness can be defined essentially by the distance between the front 24 and the back 25 of the holding portion.

The lower hanging portion is formed substantially the same as the upper hanging portion. This means that a first leg 14a extends perpendicularly from the panel section 11 and is followed by a second leg 14b, which in turn is perpendicular to the first leg 14a. A Einhängschenkel 14c joins the leg 14b and extends substantially perpendicularly from this. The hooking leg 14c is followed by a bent portion 14d. Of the Einhängschenkel 14 c and the portion 14 d create a gap 16, which projects beyond the Einhängabschnitt 10 and the fastener 2 of the adjacent Fassadenpaneels.

Like from the FIG. 3 can be well recognized, the gap 18, which is part of the gap 16 and is bounded by the two legs 14c and 13c, dimensioned such that this is present after installation of the facade panels, so that expansions by heat, such as sunlight, can be compensated. In other words, this means that the facade panels are not mounted on shock, but a gap 18 between the adjacent panels, wherein the gap 18 between the two panels is formed by the gap 16 of the lower Einhängabschnittes 12.

The bent portion 14 d of the lower Einhängabschnitt 12 has a length so that it protrudes deeper into the gap 5 between the holding portion 21 and the substructure 3, as the portion 13 d of the upper Einhängabschnitt 10. Equally long formed sections are also conceivable. In addition, it is also conceivable that the portion 14d is formed shorter than the portion 13d.

Preferably, the cranked portion 14d has longitudinally extending bends or grooves 19, which mechanically supports the connection between the lower facade element 1 and the fastening element 2. The folds 19 also provide a spring force perpendicular to the substructure 3 ready. The folds 19 further prevent the fold does not throw waves during profiling, that is, that no corresponding deformations form.

The intermediate space 16 essentially serves to receive parts of the upper hooking section 12 of the facade panels arranged below the corresponding facade panels 1.

The upper Einhängabschnitt 10 and the lower Einhängabschnitt 12 are formed such that in the assembled state, the gap 18 between the two legs 13c and 14c is formed. In other words, that the facade panels 1 by the upper fastening element 2 substantially against movement parallel and perpendicular to the substructure 3 and secured by the lower fastening element 2 substantially against movement perpendicular to the substructure 3.

The gap 18 is used essentially to absorb changes in length due to thermal influences, such as sunlight. As already mentioned, the facade panels 1 are not firmly screwed to the substructure apart from the optional screwing the bottom facade panels 1a. Therefore, such changes in length can be compensated for particularly well without the panel section 11 deforming.

As can also be seen in the figures, the panels are designed such that between the first leg 13a of the lower panel 1a and the first leg 14a of the upper panel 1b, a space 34 visible from the front can arise.

In the perspective view of FIG. 4 can be well recognized how the anti-rotation elements 28 act, which extend here on both sides of the profile of the substructure 3.

The number of fasteners 2 to be used per facade panel 1 is essentially dependent on the length of the individual facade panels. For example, it is conceivable for a facade panels with a length of 4 m two to four upper fasteners 2 to order. Typically, a fastening element 2 is arranged every 1 to 1.5 m. The distance between two adjacent fastening elements 2 depends essentially on the weight of the facade panels 1 and on the expected wind suction or wind pressure load. Basically, as from the FIG. 1 it can be seen per facade panels 1 at least two fasteners 2 arranged, namely a fastener 2 for receiving the lower Einhängabschnittes 12 and a fastener 2 for the upper Einhängabschnitt.

The manner of mounting the cladding system as described above has a number of advantages over prior art systems. By the prior attachment of the fasteners 2, a mounting structure can be created, which allows a safer installation, since the facade panels 1 can be mounted in the already connected to the substructure 3 fasteners 2. By the process of hanging the facade panels are already secured against falling down. This is in contrast to systems of the prior art, where the top panel is mounted first, and all other panels are pushed from below to the respective upper panels and must be secured after positioning with screws. There is a risk of the panels falling down during assembly.

In addition, the mounting from below also allows greater flexibility in the flexibility of the facade design.

If the substructure 3 is assembled from profile elements, then these profile elements can be provided at the factory with a multiplicity of mutually spaced openings, so that an assembly of the fastening elements 2 is further facilitated. In this case, the screws 4 would be self-tapping screws with which the corresponding thread in the opening is cut.

The fastener 2 is preferably made of a metallic material, such as a light metal. Preferably, the fastener 2 is made of aluminum. In this case, a profile with the cross section of the fastening element 2 can be produced by means of an extrusion process. Subsequently, the profile can be post-processed mechanically. The mechanical reworking is understood to mean the cutting to length of the individual fastening elements 2, as well as the attachment of the opening 26 and the punching of the anti-rotation elements 28.

In summary, some of the key advantages of the fastener or cladding system described herein are set forth herein.

The fastening element has a higher load capacity or load capacity, in particular in the case of wind suction / wind pressure loading, than comparable systems from the prior art. In other words, it can also be said that larger spans can be provided between the fasteners at the same capacity.

Further, the degree of waviness in the panels between the individual fasteners can be reduced, resulting in quality improvement.

Damaged facade panels are easier to replace because they are not bolted directly to the substructure.

The FIGS. 8 and 9 show a further embodiment of the facade cladding system. Identical elements are provided with the same reference numerals. The fastening element 2 is identical to the fastening elements 2 according to the embodiments described above. The fastener 2 is connected via a screw 4 to the substructure 3 and provides between the substructure 3 and the mounting portion 21, a gap 5, in which parts of the facade panels 1 can protrude.

The facade panels 1 here also comprises an upper Einhängabschnitt 10, an adjoining panel section 11 and a lower Einhängabschnitt 12. The panel section 11 here has the shape of a plate to which the upper Einhängabschnitt 10 and the lower Einhängabschnitt 12 are attached. The Einhängabschnitte 10, 12 are separately formed parts. In the present embodiment, the panel section 11 is made of a glass plate, for example, and the two hooking sections 10, 12 are connected to the panel section 11 via a joint 35, here in the form of a splice. The suspension sections 10, 12 are preferably profiles of a metallic material which can be cut to the desired length. This also allows the use of other materials for the panel section 11.

For example, it is conceivable to produce the panel section 11 from wood or plastic, in which case the hooking sections 10, 12 are fastened to the panel section 11. It would also be conceivable, the Einhängabschnitte 10, 12 with fastening means, such as a screw on the panel section 11 to Fasten.

Based on FIG. 9 showing a detail view of a fastener 2, the upper hanger portion 10 and the lower hanger portion 12 will be described in greater detail.

The upper Einhängabschnitt 10 has substantially the same structure as the upper Einhängabschnitt 10 of the previously described facade panels. In addition, here comprises the upper Einhängabschnitt 10 a connecting leg 13e, which is integrally formed on the first leg 13a. About the connecting leg 13e, the facade panels is connected to the upper Einhängabschnitt 10. The upper Einhängabschnitt 10 thus extends with the connecting leg 13e parallel to the panel section 11. The connecting leg is then followed by the first leg 13a, which extends here at an angle to the panel section 11. The leg 13a is followed by another leg 13b, which extends in substantially the same direction as the panel section 11. At the end of the leg 13b a Einhängschenkel 13c is arranged, which in turn extends perpendicular to the leg 13b and is bent at the end with a portion 13d. The section 13d then projects into the intermediate space 5 between the fastening element 2 and the substructure 3, while the leg 13c rests on the abutment surface 33 of the fastening element 2.

Also, the lower Einhängabschnitt 12 has a substantially similar structure to the lower Einhängabschnitt 12 of the previously described facade panels. This means that a first leg 14a extends perpendicularly from the panel section 11 and is followed by a second leg 14b, which in turn is perpendicular to the first leg 14a. A Einhängschenkel 14c joins the leg 14b and extends substantially perpendicularly from this. The hooking leg 14c is followed by a bent portion 14d. The Einhängschenkel 14 c and the portion 14 d create a gap 16, which projects beyond the Einhängabschnitt 10 and the fastener 2 of the adjacent Fassadenpaneels. The first leg 14a in this case has a length of the leg 14b, which is shorter than the thickness of the panel section 11 and optionally the adhesive layer, so that the first leg 14a does not have the front Side 11a of the panel section 11 protrudes. The first leg 14a could also serve as a stop element for the panel section here.

Also in this embodiment, the facade panels 1 can be arranged to each other so that a gap 34 between two adjacent facade panels 1 is present, with the above-mentioned advantages also come into play.

The facade panels after the FIGS. 8 and 9 Can along with the facade panels after the FIGS. 1 to 7 be used in a common facade cladding system, which is particularly advantageous because a flexible design of the facade with different materials and colors is possible.

LIST OF REFERENCE NUMBERS

1

wall panels

2

fastener

3

substructure

4

screw

5

gap

10

upper hanging section

11

panel section

12

lower hanging section

13

Parts of the upper Einhängabschnitt

14

Parts of the lower hanging section

16

Space in the upper Einhängabschnitt

17

Space in the lower Einhängabschnitt

18

gap

19

bends

20

attachment section

21

holding section

22

front

23

back

24

front

25

back

26

opening

27

support section

28

anti-rotation

29

leg

30

surface

31

deepening

32

Surface of the substructure

33

abutment surface

34

gap

35

junction

L

longitudinal direction

B

Distance between 28

S

Clear width of the gap 5

Claims (13)

1. Façade cladding system for fastening to a substructure (3), wherein the façade cladding system comprises a plurality of façade panels (1, 1a, 1b, 1c, 1d) arranged above one another and/or next to one another and a plurality of fastening elements (2, 2a, 2b, 2c, 2d), wherein the fastening element (2) has a fastening portion (20) and a holding portion (21) adjoining the fastening portion (20), wherein the fastening portion has a front side (22) and a rear side (23) which is able to be aligned with respect to the substructure (3), and wherein the holding portion (21) has a front side (24) and a rear side (25) which is arranged offset from the rear side (23) of the fastening portion, with the result that there is an interspace (5) between the fastening element (2) and the plane which is defined by the surface (32) of the substructure (3), into which interspace parts of the façade panels (1) can project, and wherein the façade panels (1) comprise an upper suspension portion (10), an adjoining panel portion (11) and a lower suspension portion (12), wherein parts (13d) of the upper suspension portion (10) project into an interspace (5) created by an upper fastening element (2), and wherein parts (13c) rest on the abutment surface (33) of the said fastening element (2), and wherein the lower suspension portion (12) projects into an interspace (5) created by a lower fastening element (2), characterized in that an interspace (18, 34) for compensating for thermally induced expansions of the façade panels (1) in a parallel direction to the substructure (3) is present between the upper suspension portion (10) of a lower façade panel (1; 1a) and the lower suspension portion (12) of an upper façade panel (1; 1b) arranged directly above the lower façade panel (1; 1a).
2. Façade cladding system according to Claim 1, characterized in that the upper suspension portion (10) comprises an interspace (17) whose clear width substantially corresponds to the maximum thickness of the holding portion (21), wherein the holding portion (21) projects into the interspace (17).
3. Façade cladding system according to either of the preceding claims, characterized in that the lower suspension portion (12) comprises a downwardly open interspace (16) into which the upper suspension portion (10) projects.
4. Façade cladding system according to one of the preceding claims, characterized in that the thickness of the façade panels (1) in the region of the suspension portions (10, 12) substantially corresponds to half the clear width of the interspace (5).
5. Façade cladding system according to one of the preceding claims, characterized in that at least two, preferably three, four or five, fastening elements (2) are arranged per four linear metres of façade panels (1).
6. Façade cladding system according to one of the preceding claims, characterized in that the lowermost façade panel (1a) is fixedly connected via the lower suspension portion (12) to the substructure (3) and is connected via the upper suspension portion (10) to at least one fastening element (2), and in that all façade panels (1b, 1c and 1d) situated above the lower façade panel (1a) are exclusively connected to the substructure (3) by being suspended in the fastening elements (2).
7. Façade cladding system according to one of the preceding claims, characterized in that the upper suspension portion (10), the panel portion (11) and the lower suspension portion (12) are formed in one piece, or in that the upper suspension portion (10) and/or the lower suspension portion (12) are designed as separate elements which are connected to the panel portion (11) via in each case a connection (35).
8. Façade cladding system according to one of the preceding claims, characterized in that the holding portion (21) has an abutment surface (33) which is arranged opposite to the fastening portion (20), wherein parts of the façade panel (1) rest on this abutment surface (33).
9. Façade cladding system according to one of the preceding claims, characterized in that the holding portion (21) has a variable thickness, wherein the thickness in a portion adjoining the abutment surface (33) is the largest.
10. Façade cladding system according to one of the preceding claims, characterized in that at least one opening (26) for receiving a screw (4) extends from the front side (22) to the rear side (23) through the fastening portion (20).
11. Façade cladding system according to one of the preceding claims, characterized in that the fastening portion (20) is adjoined on the side opposite to the holding portion (21) by a supporting portion (27).
12. Façade cladding system according to one of the preceding claims, characterized in that anti-rotation elements (28) are arranged on both sides of the supporting portion (27) and extend from the supporting portion (27) beyond the plane of the rear side (23) of the holding portion (22), wherein the anti-rotation elements (28) are arranged at a distance from one another.
13. Method for mounting a façade cladding system comprising a plurality of façade panels and fastening elements according to one of Claims 1 to 12, characterized in that, in a first step, the fastening elements (2) are fastened to a substructure (3), with the result that the interspaces (5) are provided, and in that, in a subsequent step, the lowermost façade panel (1a) is suspended, and in that, in a subsequent step, the façade panels to be arranged above the lowermost façade panel (1a) are suspended in sequence.

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