DE102011085188A1 - Fastening clip for use in mounting system for fastening surface elements i.e. photovoltaic thin-layer elements, of photovoltaic module to e.g. greenhouse, has spreading medium i.e. screw, guided through opening for spreading bracket - Google Patents

Abstract

The clip (1) has a cover strip (6), and a spreading bracket (7) extending away from the strip and formed as a single-piece with the strip. An opening is formed at a point of the strip, and a spreading medium i.e. screw (5), is guided through the opening for spreading the bracket, where the clip is designed as a profile section. The strip and the bracket are extended in a longitudinal direction of the profile. A joint groove is formed between the strip and the bracket, and a counter support (8) is arranged at a distance from the bracket, where the clip is made from aluminum. Independent claims are also included for the following: (1) a mounting system (2) a method for fastening surface elements to a building.

Description

Field of the invention

The present invention relates to a retaining clip for attaching one or more surface elements to a building. It also relates to a mounting system comprising the retaining clip. Finally, the invention relates to a method for attaching one or more surface elements to a building.

Background of the invention

From the publication DE 199 34 059 A1 a device for fixing solar modules on a support profile by means of a non-positive connection is known. The support profile is on the side on which a solar module is to be arranged repeatedly T-slotted. In this case, a T-slot recessed for receiving a shaft of a fastener. After assembly, fastener and support profile should form a latching or clamping connection, wherein the fastening means engages over an edge of the solar module resting on the support profile in order to press the solar module onto the support profile. Further T-slots are used to attach a support for the solar modules.

The publication DE 10 2005 039 495 A1 discloses a support structure for photovoltaic modules in which the photovoltaic modules on the top of a metal profile element on both sides of a projection of this metal profile element with the interposition of a sealing strip. The end portions of the photovoltaic modules are clamped by means of a cover profile and a fixing screw with the metal profile element. For this purpose, the fixing screw engages in a screw provided in the projection of the metal profile element.

The problem underlying the invention

The invention has for its object to provide an improved retaining clip for attaching one or more surface elements to a building. Also, an improved mounting system to be provided with the retaining clip. Finally, an improved method for attaching one or more surface elements to a building is to be provided.

With the invention, in particular, a simple and secure installation of the surface elements to be ensured on the building. It should be avoided that too much pressure is exerted on the surface element by the mounting means. Such too high a pressure could negatively affect the mechanical properties of the mounted surface elements and force, z. B. by wind, even lead to damage or destruction of the surface elements.

Inventive solution

The solution of the object is achieved by a retaining clip for attaching one or more surface elements to a building having a cover strip and extending away from the cover strip first expansion leg, wherein at least one point of the cover strip an opening is arranged through which a spreading can be introduced to spread the first expansion leg. By means of the expansion leg according to the invention, it is possible to easily and securely fix the retaining clip in a mounting groove of a wearer by spreading. It is an achievable advantage of the invention that the number of items required for mounting can be reduced. In particular, on a sliding block, as in the prior art u. a. is used, be waived. To spread the first expansion limb, e.g. a screw introduced as a spreading agent through the opening in the cover strip.

The invention task is also solved by a mounting system comprising the holding clamp and a carrier having a mounting groove, in which the holding clamp is used in unexpanded state of the first expansion leg and in which it can be fixed by spreading the spreader leg.

Finally, the object of the invention is achieved by a method for fastening one or more surface elements to a building, in which the surface element is placed on a support surface of a support, a holding clamp is inserted into a retaining groove of the support in such a way that an edge portion of the surface element between the Support surface and the support surface comes to rest, and the retaining clip is determined by spreading at least a first expansion limb in the retaining groove.

The carrier is either in turn attached to the building, z. B. by screws or welding, or he is part of the building, eg. B. a bolt or post profile. The invention is particularly suitable for mounting the surface elements on a building facade or a building roof or as part of a facade or a roof. In principle, the surface elements in the attached state can be vertical, horizontal or inclined.

The invention is particularly suitable for surface elements for energy, z. B. Photovoltaic elements, in particular thin-film or silicon-based. But of course, the surface element can basically also be any other planar elements, for. As decorative panels that can blind an underlying building wall or an underlying roof, or transparent panels, such as in cases where the building is a greenhouse or a winter garden or the panels are to serve the sound insulation.

The invention is particularly suitable for non-framed surface elements, for. B. photovoltaic thin-film elements, the z. B. consist of a glass plate with one or more photosensitive coatings. Preferred materials of the sheet element are besides glass, which is particularly preferably coated, plastics, metals, natural stone including marble or artificial stone, concrete or a combination of the aforementioned materials.

Preferred embodiment of the invention

Advantageous embodiments and developments, which can be used individually or in combination with each other, are the subject of the dependent claims. The reference numerals in all claims have no limiting effect, but are only intended to improve their readability.

The preferred retaining clip is elongated, wherein the cover strip and the first expansion leg extend in the longitudinal direction of the carrier and the first expansion leg extends, seen in the cross-section of the carrier perpendicular to the longitudinal direction, away from the cover strip. Particularly preferably, the retaining clip is formed as a profile section, wherein the cover strip and the first expansion leg extending in the longitudinal direction of the profile and extending in the cross section of the profile of the first expansion limb away from the cover strip. The formation of the retaining clip as a profile section allows a particularly simple and inexpensive production of the retaining clip.

Preferably, the first expansion leg is formed integrally with the top surface, particularly preferably of a uniform material. A preferred material for the expansion leg and / or the cover strip, particularly preferably for the entire holding clamp, is a metal, particularly preferably aluminum or an aluminum alloy. In principle, however, other materials come into question, for. B. plastics.

The spreading of the spreader leg is preferably achieved by deforming the material at a joint between the top surface and expansion leg. For this purpose, a joint groove is preferably provided between the cover strip and the first expansion leg, on which the retaining clip can be deformed for spreading the first expansion leg. The hinge groove preferably extends in the longitudinal direction of the retaining clip over its entire length. In the area of the hinge groove, the strength of the material of the retaining clip is reduced compared to the adjacent areas. As a result, it can be advantageously achieved that the deformation of the holding clamp takes place substantially only in the area of the joint groove.

Furthermore, the strength of the material at the hinge groove and the length of the hinge groove can be used to precisely determine the force required to spread. Preferably, the thickness of the material of the retaining clip at the hinge groove is less than 2 mm, particularly preferably less than 1 mm. The thickness of the material of the retaining clip on the hinge groove is preferably greater than 0.1 mm. In principle, of course, other embodiments of the invention are conceivable in which the first leg and the cover strip are individual parts which are hinged together, preferably pivotally.

The preferred holding clamp also has a spaced from the first expansion leg abutment, wherein in non-expanded state of the inner clamping surface of the first expansion leg and the anvil with increasing distance from the top surface converge and the abutment is arranged so that the spreading means through the opening between the counter bearing and the first expansion limb can be introduced. For the purposes of the present invention, the inner surfaces are the mutually facing surfaces of the expansion limb and the anvil. This makes it possible to achieve that the expansion means can be supported on the abutment while it pushes the first expansion leg to spread it.

Particularly preferably, the abutment is designed as a second expansion leg, which can be spread apart by the spreading. Preferably, the second expansion leg is formed integrally with the top surface. Particularly preferably, the entire holding clamp consists of one piece. As in the case of the first expansion leg, the spreading is preferably carried out by deforming the metal at a hinge point. For this purpose, a second hinge groove is preferably provided between the cover strip and the second expansion limb, on which the retaining clip can be deformed for spreading apart the second expansion limb. This second hinge groove also preferably extends in the longitudinal direction of the retaining clip over its entire length. For the second joint groove, the same preferred dimensions apply with regard to the thickness of the material of the retaining clip on the second joint groove as for the first articular groove. As in the case of the first expansion leg, it is of course conceivable, in principle, also in the case of the second expansion leg, that it is an item hinged to the cover strip, preferably pivotably articulated. Preferably, the spreading means spreads the second expansion limb by pushing it in a spreading direction. Particularly preferably, the spreading directions of the first and the second expansion limb are just opposite.

The expansion limb and / or the anvil preferably have a wave-like profile on their inside in cross-section. Here, the inside is the side of the expansion limb or thrust bearing, which faces the other of these two elements. The wave-like profile is in the longitudinal direction of the retaining clip as parallel notches, in which advantageously a thread of a screw can act as a spreading means to fix the screw between the first expansion limb and the anvil. Preferably, both the first expansion limb and the anvil have such a wave-like profile, wherein particularly preferably an increase on the inside of the first expansion leg of a recess on the inside of the anvil opposite and vice versa. This takes into account that even with an ordinary screw, the thread on opposite sides is just offset by half the thread pitch.

The preferred spreading means for spreading the spreading leg or legs of the retaining clip is a screw. The preferred screw can be screwed into the holding clamp to spread the spreader leg or legs. The preferred screw has a substantially cylindrical bolt. The preferred bolt is just so wide that the inside (s) of the spreader leg (s) in the expanded state is substantially parallel to the bolt axis. The screw axis preferably runs in the screwed state perpendicular to the support surface.

The preferred retaining clip is longer than 20 mm, more preferably longer than 40 mm. It is preferably shorter than 200 mm, more preferably shorter than 100 mm, e.g. 70 mm. The retaining clip can, in particular if it is more than 100 mm long, with two or more, in the longitudinal direction of the retaining clip from each other offending openings are provided, through each of which a spreading can be introduced. As a result, an effective spreading over the entire length of the retaining clip can advantageously be achieved.

The retaining clip is preferably made of aluminum or plastic. A particularly preferred plastic is an EPDM-based plastic. The Shore hardness of the plastic is preferably 50 or harder, more preferably 60 or harder, more preferably 70 or harder.

The attachment of the retaining clip to the carrier can always be non-positive or positive. Preferably, it is both positive and positive. In this case, preferably prevents a positive connection, a release of the retaining clip in the mounting direction, particularly preferably in all directions except the longitudinal direction of the carrier. On the other hand, preferably a traction prevents a relative displacement between the holding clamp and the carrier in the longitudinal direction of the carrier. Particularly preferably, the expansion limb and / or the abutment has a projection in cross-section on its outer side. Here, the outside is the side of the leg which faces away from the other leg.

The protrusion preferably protrudes in a substantially spreading direction from the outside of the expansion limb and / or abutment. It preferably extends in the longitudinal direction of the retaining clip over the entire length of the expansion limb and / or thrust bearing. With the projection, the retaining clip can advantageously engage behind a guide cheek a mounting groove of the wearer. In this way it is possible to fix the holding clamp by spreading the mold liquid in the mounting groove of the wearer. For this purpose, both the first expansion limb and the anvil particularly preferably have such a projection, in particular if the abutment is designed as a second expansion limb.

Preferably, the facing away from the cover strip end of the expansion leg and / or the thrust bearing is equipped on its outer side with a run-on slope to be able to be used with rest in the mounting groove of the wearer can. In cross-sectional view of the holding clamp, the run-up slope runs towards a center plane of the holding clamp extending in the mounting direction and extending in the longitudinal direction of the holding clamp. The preferred run-on slope forms the part of the projection facing away from the cover strip. In the longitudinal direction, the preferred run-up slope extends over the entire length of the or the expansion leg.

Preferably, the outer distance of the ends facing away from the cover strip of the expansion legs in the unexpanded state is slightly less than the width of the retaining groove. On the other hand, in the cross section of the non-splayed retaining clip, the outer spacing of the projections is preferably slightly larger than the width of the retaining groove of the wearer. The oversize is preferably less than 5 mm, more preferably less than 3 mm. It is preferably more than 0.5 mm, more preferably more than 1 mm, z. B. 2 mm. As a result, the holding clamp can be inserted into the retaining groove with a slight yielding of the expansion limb or inwardly (ie, counter to the spreading direction) and thus provisionally secured against falling out of the holding groove.

The preferred carrier is elongated, more preferably it is formed as a profile section. The formation of the carrier as a profile section enables a particularly simple and inexpensive production of the carrier. The longitudinal direction of the holding clamp extends in the mounted state, preferably parallel to the longitudinal direction of the carrier.

The preferred carrier has a support surface on which the edge of a surface element can be placed. Preferably, the carrier has a bearing surface on both sides of the retaining groove when viewed in cross-section. The preferred holding clamp has a holding surface, which is arranged such that, when the holding clamp is fixed in the mounting groove, at least a part of the holding surface lies opposite a part of the support surface. Particularly preferably, when viewed in cross-section, the retaining clip has a bearing surface on each side of the opening for the expansion element, so that at least one part of each retaining surface is located at a distance from a part of an associated bearing surface when the retaining clip is fixed in the mounting groove. In this way, the edge of the surface element between the two surfaces is determined. In this case, these surfaces do not necessarily have to be directly opposite, but can also be opposite offset, as z. B. in the utility model DE 20 2010 011 235 U1 is disclosed. The local rear pressure surface 320 corresponds to the present bearing surface and the local support surface 510 of the present holding surface. The relevant content of DE 20 2010 011 235 U1 is by reference part of the present disclosure.

Particularly preferably, the surface element is not directly on the support surface and the support surface, but it is a protective element interposed. The preferred protective element has a U-shaped cross-section and surrounds the edge of the surface element. The protective element is preferably made of an elastically deformable material, e.g. a synthetic rubber. In order to enable a better contact between the holding surface and / or the support surface and the protective element, the holding surface and / or the support surface are preferably provided with at least one protruding in the direction of the surface element bead. The preferred bead extends in the longitudinal direction of the holding clamp or in the longitudinal direction of the carrier. When mounted with protective element surface element, the bead is preferably at least partially pressed into the protective element.

Alternatively or additionally, in a preferred embodiment of the invention, an elastic anti-slip tape is fastened to the support surface and / or the holding surface in order to prevent displacement of the surface element and / or the protective element in the longitudinal direction of the carrier or holding clamp. The anti-slip tape is preferably fixed in a groove, particularly preferably a T-groove, which extends in the longitudinal direction of the carrier or the holding clamp, particularly preferably over the entire length thereof. The preferred anti-slip tape is made of an elastically deformable material, e.g. Made of rubber.

By inserting and fixing the spreading in the expansion of the spreader leg or the retaining clip in the mounting groove is so pressed that a defined distance between the support surface of the carrier on the one hand and the holding surface of the holding clamp is set on the other. This distance can not be reduced by a further introduction of the spreading no longer. This ensures that no excessive force is applied to the surface element.

The preferred retaining groove of the carrier into which the retaining clip is inserted is a T-slot. In this case, the distance of the projection and the end of the expansion leg or just the height of the retaining groove from the groove bottom to the respective expansion leg associated guide cheek. By this measure, the position of the retaining clip in the mounting direction of the retaining clip and thus the distance between the support surface and the support surface is determined without the need for a special adjustment during assembly. This distance can be matched with the invention to the thickness of the surface elements that excessive force exerted by the mounting system is prevented on the edge of the surface element.

A preferred mounting system further comprises a slip-off device for securing the surface element or elements to the building against slipping in a direction lying in the plane of the surface element. The slip-off comprises a profile section and a hammer head screw with a nut or a hammer head nut with a screw, wherein the profile section has an opening for the bolt of the screw or hammer head screw and a rotation lock for rotationally secure attachment of the profile section on the support. Thanks to the hammer head screw or hammer head nut Abrutschsicherung invention can be inserted into the retaining groove of the carrier and fixed by turning the guide cheek of the retaining. The rotation lock is preferably formed by a step in the cross section of the profile section. This can be prevented be that the slip-off avoids rotating. Furthermore, the anti-slip device preferably has at least one support surface for supporting the surface element. In the assembled state of the anti-slip device, the support surface preferably extends in cross-section into the region or areas of the support in which the modules are intended to rest on the support surface (s) of the support. The support surfaces are preferably equipped to protect the surface elements with U-shaped buffers made of an elastically deformable material.

The anti-slip device is preferably attachable to the carrier so as to prevent slipping in the longitudinal direction of the carrier. This is particularly useful when the carrier is inclined or even perpendicular to the building. The preferred anti-slip device has two support surfaces. Preferably, the two support surfaces of the Abrutschsicherung extend on both sides of the opening and in the assembled state particularly preferably on both sides of the carrier in order to support a surface element on each side.

The preferred carrier has in addition to the retaining groove on a mounting area, with which it is attached to a surface, for. B. a facade surface or a roof surface can be attached, for. B. by screws. The preferred attachment region, viewed in cross-section, comprises at least one, preferably two, legs which extend away from the wearer and are particularly preferably provided with one foot each. Feet and legs preferably extend longitudinally over the entire length of the wearer. The feet continue to extend preferably parallel to the support surface and are particularly preferably equipped with a projection to which for fixing to the building clamping pieces can be used.

Brief description of the drawing

Further advantageous embodiments will be described in more detail below with reference to the embodiment illustrated in the drawings, to which the invention is not limited.

They show schematically:

1 A mounting system according to the invention with holding clamp spread by a spreading means, carrier and photovoltaic module fixed between holding clamp and carrier;

2 : The retaining clamp of the 1 in an unexpanded state; and

3 : An attached to the carrier, anti-slip device according to the invention.

Detailed description based on the embodiment

In the following description of a preferred embodiment of the present invention, like reference characters designate the same or similar components.

This in 1 The mounting system shown in cross-section perpendicular to the longitudinal direction comprises a holding clamp designed as a profile section 1 and a carrier formed as a longitudinal profile 2 , The carrier 2 has a T-shaped mounting groove 3 on, in which the holding clamp 1 used and fixed by spreading. As a spreading agent serves the cylindrical bolt 4 a screw 5 ,

The retaining clip 1 has a cover strip 6 on, from which two spreader legs 7 . 8th extend away. Between the spreader legs 7 . 8th is located in the cover strip 6 a round opening, not shown, through which the bolt 4 the screw 5 can be introduced to the expansion legs 7 . 8th spread apart. The figure shows the retaining clip 1 in a spread state.

A view of the retaining clip 1 in the unspread state is in 2 to see. The entire holding clamp is made in one piece from aluminum. There, where the spreader legs 7 . 8th on the cover strip 6 are arranged, there is ever a joint groove 9 . 10 , At the joint grooves 9 . 10 becomes the retaining clip 1 for spreading apart the expansion limbs 7 . 8th deformed. For this purpose, the strength of the material of the retaining clip 1 At this point lower than at the other points and is only about 1 mm. The inner surfaces of the expansion legs 7 . 8th run with increasing distance from the cover strip 6 towards each other. In addition, the inner sides of a wave-like profile, in the longitudinal direction of the clamp 1 running notches forms. Exactly there is an increase 11 on the inside of a thigh 7 a depression 12 on the inside of the other thigh 8th opposite and vice versa. In these grooves, the thread of the bolt 4 the screw 5 engage so that they pass through the opening between the expansion legs 7 . 8th can be screwed. She displaces the spreader legs 7 . 8th outward and spreads them in this way. In the spread state, the two expansion limbs run 7 . 8th then parallel to each other and to the longitudinal axis of the screw 5 as well as perpendicular to the cover strip 6 , as again best in 1 you can see.

The two expansion legs each have a projection on their outer side 13 . 14 on, each one associated with him guide cheek 15 . 16 the holding groove 3 of the carrier 2 engages behind. Here are the guide cheeks 15 . 16 tilted at the same angle to that of the cover strip 6 facing sides of the projections 13 . 14 are inclined. More exactly, the guide cheeks 15 . 16 in the direction of the retaining groove 3 out to each other. As a result, the expansion legs 7 . 8th when spreading by means of the screw 5 not only against the guide cheeks 15 . 16 but also against the bottom of the groove 17 pressed. In this way can be determined by the length of the expansion leg 13 . 14 the vertical position of the cover strip 6 relative to the carrier 2 forecast. This height is in the manner of the thickness of the photovoltaic modules to be fastened 18 . 19 including U-shaped protective elements (of which only one 20 is shown) that not too much force on the module edge 21 . 22 , works. The cover strip 6 forms holding surfaces with their foothills 23 . 24 , the bearing surfaces 25 . 26 of the carrier 2 opposite to each one photovoltaic module between them 18 . 19 with U-shaped protective element 20 take. Next is at each holding surface 23 . 24 one in the longitudinal direction of the retaining clip 1 extending bead (only on one side with reference numerals 27 shown), in which the protective element 20 pushed in to achieve an even greater resistance to slippage in the longitudinal direction of the arrangement. Instead of the U-shaped anti-slip device, it would also be conceivable in a T-slot 28 . 29 the bearing surface 25 . 26 to use an anti-slip tape.

To further protect against slipping is in 3 illustrated slip-off protection 30 provided, consisting of a profile section and a hammer head screw 31 with a mother 32 consists, with which the profile section on the retaining groove 3 is attached. The hammer head engages behind the horizontally extending sections 33 . 34 the guide cheeks. Due to its stepped cross section of the profile section is against rotation relative to the carrier 2 secured. Next, the anti-slip backup surfaces 35 . 36 on that in the area of the bearing surfaces 25 . 26 to the perpendicular to the longitudinal direction of the carrier 2 extending edges of the photovoltaic modules 18 . 19 attack. 0U-shaped buffers 37 . 38 on the supporting edges 35 . 36 are attached, damage the photovoltaic modules 18 . 19 opposite.

The features disclosed in the foregoing description, the claims and the drawings may be of importance both individually and in any combination for the realization of the invention in its various forms.

LIST OF REFERENCE NUMBERS

1

retaining clip

2

carrier

3

mounting groove

4

bolt

5

screw

6

cover strip

7, 8

expansion limbs

9, 10

joint grooves

11

increase

12

deepening

13, 14

head Start

15, 16

guide cheeks

17

groove base

18, 19

photovoltaic module

20

protection element

21, 22

module edge

23, 24

holding surface

25, 26

bearing surface

27, 39

bead

28, 29

T-slot

30

slip guard

31

T-head bolt

32

mother

33, 34

horizontally extending sections of the guide cheeks

35, 36

support edges

37, 38

buffer

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19934059 A1 [0002]
• DE 102005039495 A1 [0003]
• DE 202010011235 U1 [0028]

Claims (14)

Holding clamp ( 1 ) for fixing one or more surface elements ( 18 . 19 ) on a building, wherein the retaining clip ( 1 ) a cover strip ( 3 ), characterized in that the retaining clip ( 1 ) also from the cover strip ( 3 ) extending away first expansion leg ( 7 ) and at least at one point of the cover strip ( 6 ) an opening is arranged through which a spreading means ( 5 ) can be introduced to the first expansion leg ( 7 ) abzuspreizen. Holding clamp ( 1 ) according to claim 1, characterized in that the retaining clip ( 1 ) is designed as a profile section, the cover strip ( 6 ) and the first expansion leg ( 7 ) extend in the longitudinal direction of the profile and in the cross section of the profile of the first expansion leg ( 7 ) from the cover strip ( 6 ) extends away. Holding clamp ( 1 ) according to one of the preceding claims, characterized in that the first expansion leg ( 7 ) in one piece with the cover strip ( 6 ) is formed. Holding clamp ( 1 ) according to claim 3, characterized in that between cover strip ( 6 ) and first spreader leg ( 7 ) a joint groove ( 9 ) is provided, on which the retaining clip ( 1 ) for spreading the first expansion limb ( 7 ) can be deformed. Holding clamp ( 1 ) according to one of the preceding claims, characterized in that the retaining clip ( 1 ) also one of the first expansion leg ( 7 ) spaced abutment ( 8th ), wherein in not spread state of the retaining clip ( 1 ) Inner surfaces of the first expansion limb ( 7 ) and the counter bearing ( 8th ) with increasing distance from the cover strip ( 6 ) and the abutment is arranged so that the spreading ( 5 ) through the opening between abutments ( 8th ) and first spreader leg ( 7 ) can be introduced. Holding clamp ( 1 ) according to claim 5, characterized in that the abutment ( 8th ) is formed as a second expansion leg, by the spreading means ( 5 ) can be spread. Holding clamp ( 1 ) according to one of the preceding claims, characterized in that the expansion leg ( 7 ) and / or the abutment ( 8th ) has on its inside in cross-section a wave-like profile. Holding clamp ( 1 ) according to one of the preceding claims, characterized in that the expansion leg ( 7 ) and / or the abutment ( 8th ) in cross section on its outside a projection ( 13 . 14 ) having. Mounting system comprising a retaining clip ( 1 ) according to one of the preceding claims and a carrier ( 2 ), which has a mounting groove ( 3 ), in which the retaining clip ( 1 ) in the unexpanded state of the spreading limb ( 7 . 8th ) and in which the retaining clip ( 1 ) by spreading the spreader leg ( 7 . 8th ) is fixable. Mounting system according to claim 9, characterized in that the retaining clip ( 1 ) a holding surface ( 23 . 24 ) and the carrier ( 2 ) a support surface ( 25 . 26 ), so that in the mounting groove ( 3 ) fixed retaining clip ( 1 ) at least a part of the holding surface ( 23 . 24 ) at least part of the bearing surface ( 25 . 26 ) is spaced apart. Mounting system according to claim 9 or 10, characterized in that the carrier ( 2 ) is a rail and the retaining groove ( 3 ) and the bearing surface ( 25 . 26 ) extend in the longitudinal direction of the rail. Mounting system according to one of claims 9 to 11, characterized in that it also a slip-off ( 30 ) for securing the surface element (s) ( 18 . 19 ) on the building against slipping in one direction in the plane of the surface element ( 18 . 19 ), whereby the slip-off protection ( 30 ) a hammer head screw ( 31 ) with a mother ( 32 ) or a screw with a hammerhead nut and the profile section has an opening for the bolt of the screw or hammer head screw ( 31 ) having. Mounting system according to one of claims 9 to 12, characterized in that it also a screw as a spreading ( 5 ). Method for fixing one or more surface elements ( 18 . 19 ) on a building, characterized in that a surface element ( 18 . 19 ) on a support surface ( 25 . 26 ) of a carrier ( 2 ), a retaining clip ( 1 ) in a holding groove ( 3 ) of the carrier ( 2 ) is inserted, so that a border section ( 21 . 22 ) of the surface element ( 18 . 19 ) between the bearing surface ( 25 . 26 ) and a holding surface ( 23 . 24 ) of the retaining clip ( 1 ) comes to rest, and the retaining clip ( 1 ) by spreading at least one first expansion limb ( 7 ) in the retaining groove ( 3 ) is attached.

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