DE202012102863U1 - Fastening device for a surface element on a C-profile - Google Patents

Abstract

Fastening device for the non-positive connection of a surface element (50) to a C-profile (2) of a carrier rail (1), comprising a holding element which can be fastened to the C-profile (2) by means of a screw (4) and a sliding block (5) with a threaded hole is which holding element presses the surface element (50) onto the top (3) of the C-profile (2), characterized by an insert which can be inserted into the C-profile (2) and which is narrower than the opening width (X) of the C- Profile (2) and at least one wall (7) with at least one through opening for passing the screw (4) and a receptacle (9) for the sliding block (5), which sliding block (5) and / or which receptacle (9) through Pressure can be exerted on the screw (4) screwed into the threaded bore of the sliding block (5) against the force of a spring device (35) in the direction of the base (11) of the C-profile (2), and by means of a pivotable sliding block mounted in the insert (5) with a lock gselement, which is pivotally mounted in use, depending on the ...

Description

The invention relates to a fastening device for non-positive connection of a surface element to a C-profile of a carrier rail, comprising a holding element which can be fastened by means of a screw and a sliding block with threaded bore on the C-profile, which holding element presses the surface element on the top of the C-profile ,

It is known to provide in a substructure for solar modules, which are mounted on a roof, longitudinal or transverse profile rails with a C-profile, in which nuts with a thread can be inserted. In this sliding blocks connecting screws can be screwed, which are screwed into through holes in the holding elements, which grip as a screw clamping elements on the frame. This allows the photovoltaic module to be kept secure. Each clamping element consists of a U-profile, for example, made of aluminum, and has on the upper side of the leg walls attached externally clamping walls, which engage with the lower sides of the frame sections of the solar module, which rests on the profile support. The arrangement is made so that the fixation on the base frame with the corresponding profiles by tightening the retaining element. The slot nut inserted in the C-profile suppresses the longitudinal rails of the C-profile and is clamped to it. This embodiment has the disadvantage that the sliding block has to be inserted into the C-profile, the position has to be selected provisionally and then the clamping screw has to be laboriously inserted into the threaded hole in order to fix the retaining element to the C-profile.

Such fasteners are suitable for fastening spars or strips to the frame of other modules. However, the fastening device is complicated to handle, since the parts are handled individually and the composite is formed only by threading the screw. Since the photovoltaic modules are processed on roofs, this means that a cumbersome securing of the modules and a time-consuming, expensive attachment is given.

In addition, it is often problematic to attach surface elements, such as solar or photovoltaic modules, to a C-profile, when the surface element is arranged in a composite of a plurality of surface elements at the edge. This is because many of the fastening devices known from the prior art are designed in such a way that they pick up on two adjacent surface elements. If such a fastening device is used only for fastening a surface element, an uneven loading of the fastening device takes place. This can lead to the destruction of the fastening device or a deterioration of the connection between the fastening device and the surface element (release of the connection, deformation or breakage of the fastening device). Such problems also occur in sections in a composite of a plurality of surface elements, wherein in such a section, for example because of a chimney on a roof, a surface element (eg solar module) is omitted.

From the WO 2009/091238 A1 a fastening device for fixing solar panels to a C-profile is known, which has a sliding block mounted in the C-shaped sliding block in which a screw is screwed and which is connected to a picking up the C-profile cover plate. The screw engages a clamping head, which is elongated and can be rotated by 90 ° so as to be able to pick up the two side sections on the applied solar modules. By tightening the screw a positive connection is given. The mounting head is pushed up by a coil spring surrounding the screw. This device is not easy to install. The devices must first be inserted and positioned in the C-profile. A simple assembly is not achievable here. A similar device is from the WO 03/098126 A1 known.

From the DE 10 2008 000 293 A1 Also, a fastening device for the attachment of plate-shaped elements on a mounting rail is known, which has a first holding part and a second holding part, between which a receiving space for receiving the plate-shaped element is provided. As a fastening element, a screw is provided, which is screwed into a nut, which is arranged in a holder and hereby forms a sliding block. This device also assumes that the holder is pushed with the threaded part in the C-profile.

From the EP 1 826 507 A2 a fastening device for the attachment of solar panels to a mounting rail is known, which has a hold-down element, an insertable into a receiving groove of the mounting rail and rotatable therein rear engagement part, a fastening screw and a coil spring. The fastening screw has a screw shank, which is partially provided with an external thread and can be brought into engagement with an internal thread in an opening in the rear engagement part. The coil spring extends along the screw shaft and is arranged between the hold-down element and the rear engagement part. The coil spring is on held a first bearing point on the hold-down element and at a second bearing point on the rear grip part. In addition, the winding of the coil spring extends in the direction of rotation of the external thread of the fastening screw and is arranged without play on the screw shaft. By rotation of the hold-down element can be pivoted so after the insertion of the rear grip part in the C-profile, that a sliding seat is given in the C-profile. The composite can be secured with the screw. This fastening device is not comfortable, since a rotation of the hold-down element must be completed in order to push the panel under the overlapping legs and to cause the sliding fit of the rear grip part.

Such fasteners have, in addition to the disadvantages already mentioned also the disadvantage that no secure and permanent attachment of a surface element to a C-profile is possible when the surface element is arranged at the edge of a composite of a plurality of surface elements. Often, by the design of the fasteners and the pressure or the force acting on the fastening device, this bent or permanently destroyed. As a result, for example, a solar module is no longer sufficiently held on a support rail, which can also lead to damage or destruction of the solar module.

Based on the prior art, the present invention has the object, a fastening device of the generic type so that it can be used as an interchangeable unit in conjunction with a substructure of carrier rails with C-profile and easy to assemble, said on the Should be surface element pressing element integrated component and must not be twisted to effect a backup of the fastening device in the C-profile and a secure and permanent attachment of a surface element to a C-profile is possible, even if the surface element at the edge of a composite a plurality of surface elements is arranged and to be fastened by the fastening means only a surface element or a side of the surface element.

The object is achieved by the invention by designing the fastening device according to the technical teaching given in claim 1.

Advantageous developments of the invention are specified in the dependent claims in detail.

Here, a deployable in the C-profile insert is provided, which is narrower than the opening width of the C-profile, so that the use of top or bottom - depending on how the C-profile is aligned - can be used. The insert can also be pulled out again. The insert itself has at least one wall with at least one passage opening for passing through the screw, and also a receptacle for the sliding block. The nut and the recording must not be wider than the gap, otherwise the insert would not be used. The nut and / or the receptacle is displaceable by applying pressure to the screwed into the threaded bore of the sliding block screw against the force of a spring device in the direction of the bottom of the C-profile. At the same time, however, a locking element is also carried along and drives over at least one position-securing stop or securing pin on the underside of the wall and is then pivoted so far by the force of a spring supported on or in use, that the locking element is under a side rail of the C Profile, so that a deduction is given. If, in this position, the screw is tightened while the holding element is being picked up on the surface element resting on the C profile, ie screwed into the sliding block, then it presses against the locking element, which engages under the side rail of the C profile in a non-positive manner and secures so the composite. The sliding block is therefore no longer inserted loosely into the C-profile, but is mounted in the insert, which can be pressed into the slot perpendicular to the longitudinal axis.

The sliding block is pivotally mounted in use and has an attached or molded locking element which engages after pivoting under at least one side rail of the C-profile. The pivoting movement is released when pushed by pressure on the screw of the nut on at least one intended stop or securing pin on the underside of the wall and the spring can act in use on the nut.

Moreover, in the fastening device according to the invention, the holding element is a bow-shaped part whose first end is supported in a mounting position on the upper side of the surface element in the edge region and the second end rests in the mounting position with a support portion on the support rail, wherein the bow-shaped part on the connecting portion between a holding portion and the support portion is pivotally mounted on the spring means, and wherein the screw extends from the connecting portion via the spring means to the sliding block. The design of the retaining element as a bow-shaped part ensures a secure and durable connection of a surface element to a carrier rail with C-profile, wherein a release of the bow-shaped part Of course, also possible. However, this embodiment allows for the attachment of a surface element at the edge of a composite of a plurality of surface elements that the holding element is not biased on one side or that a load occurs, which dissolves the connection between the holding element and surface element and / or damaged the retaining element or even permanently destroyed.

In order to combine the bow-shaped part with the use of the screw and the locking element and / or the sliding block to a assembly-friendly unit, is provided in a further embodiment, that the wall of the insert via a spring device, in particular one on the underside of the bow-shaped part supporting ironing or annular shaped spring is supported, which engages with the side legs in sections in the longitudinal gap of the C-profile, so that an anti-rotation of the insert during insertion is additionally given. The shaped spring may for example have two legs, which are supported on the underside of the bow-shaped part and rest with a connecting part on the insert. Through a central bore of this connecting portion, the screw may be passed, it is expedient, however, to provide a bulbous form spring, which is either molded out of the wall or attached to this and with an upper leg or an upper bridge portion at the bottom of the holding or clamping element supported. In principle, any desired shape springs can be used here in order to maintain a necessary distance and at the same time to exert a lateral positional fixation on insertion into the gap of the C-profile.

If the insert and the wall are made of plastic, it is advisable to inject the spring legs of the spring directly with. This can also be a closed annular spring. At this recesses or other locking means may be provided to accommodate, for example, a leg of a double-sided coil spring, which is mounted for pivoting of clamping means or the sliding block with clamping means in use. The abutment can also in use itself, z. B. formed by a rib, may be provided.

If the sliding block is provided simultaneously with the clamping means or clamping element or an extension in order to be used as a clamping element, it is recommended to provide on the sliding block a guide portion which engages from below through the wall of the insert and is pivotally mounted therein. The guide portion may be round or else rectangular in shape and rectangular shape of the receptacle and tubular, preferably also have a parallelogram structure with rounded corners, so that within the rectangular and tubular receptacle of the thus formed guide portion can be spent at least in two rotational positions. Since the guide section and the shaped block form a unit, it can be seen that by pivoting with a correspondingly elongated formation of the molded block, it can be brought into a position in which it runs axially parallel to the longitudinal direction of the insert and can be introduced into the gap, and that it is ingested a rotational position with the clamping element engages under at least one of the two side rails of the C-profile.

In order to pivot on the sliding block in the various designs, a torque must be exerted by a spring so that after passing over the sliding block via a stop or over several securing pin this performs the necessary rotational movement, wherein a lever can be attached to the cylindrical guide portion working with the spring. The spring may be a tension or compression spring, which then exerts the spring force on the guide portion and the sliding block upon release of the sliding block and causes the rotation, so that the clamping portions of the sliding block can engage under the side rail. The sliding block can be designed on both sides so that a grip under both side rails takes place.

In the case that the guide portion has a polygonal basic structure, for example a parallelogram structure, a spring leg of a double-legged spiral spring may abut against an outer surface. In the prestressed state, the spring abuts against the radius of curvature in the corner region, so that after moving the molded block by a defined stroke, so that it can slide over the securing pin, the spring presses against the contact surface until the sliding block at a desired angle twisted. The spring comes to rest on an outer side surface of the guide portion.

Notwithstanding the prior art, in the present invention, therefore, only by pressure on the screw turning and pivoting of the clamping, locking or lower gripping means or of the sliding block for taking under the side rails of the C-profile released while pivoting by a spring is effected. The guide section should therefore have at least one length which is greater than the necessary displacement path for releasing the sliding block via the securing pin or pins.

Thus, a provision is possible, if necessary, for example, when the screw is loosened and as a solar or photovoltaic module trained surface element is removed, is provided in a further embodiment, that on the guide portion or on the locking element an actuating projection is provided which can be engaged behind with a finger to cause simultaneous depression of the screw after exceeding the securing pin a reverse rotation can. It can be seen that in this way a simple disassembly without the aid of other tools is possible.

By pressing the screw or by return stroke of the same by the spring means locking or clamping means are automatically effective and thus prevent displacement within it C-profile and provide secure attachment z. B. the photovoltaic module on the carrier rail. The insert and the bow-shaped part can be carried out by means of the screw already pre-assembled, so that in use only an insertion into the C-profile is required to fix the frame, for example, a photovoltaic module to the support rail. The clamping screw is then further screwed into the sliding block until the top wall of the insert engages under the lower surfaces of the longitudinal rails of the C-shaped profile. By tightening the screw while the surface element is pressed firmly against the top of the two longitudinal rails of the C-profile and held by traction.

If the insert is narrower than the opening width of the C-profile, the insert with the bow-shaped part can also be pre-assembled and easily pressed into the gap. By pressure on the screw is thereby also achieved that locking and clamping means move under the longitudinal rails, for example by pivoting or moving, so that at the same time a positional assurance is given with the insertion without the pressure walls on the bow-shaped part under tension lie the surface element. Only by tightening the screw is the frictional connection. The bow-shaped part can also be preassembled via connecting parts to the insert. The socket for the sliding block provided in the insert may be a laterally loadable bearing, a tub or a frame-shaped housing which is resiliently supported against the bottom of the C-profile in use.

Above the receptacle is provided in a further embodiment that is provided as locking and clamping means a laterally vorschiebbarer, the width of the gap of the C-profile not exceeding the locking slide or a pivotable locking element, the / a horizontal, ie parallel to the longitudinal axis of the C-profile extending, pivot axis is pivotable or about a perpendicular thereto pivot axis. This depends on the design form. In one case, it may be, for example, a toggle lever, in the other case a simple, cantilevered lever or a double-sided lever pivotable about the screw, so that when turning it one end below the one longitudinal rail and the other end under the other longitudinal rail of the C-profile can grab. These pivotal locking elements are not designed to be wider than the gap in the C-profile, so that the insert can be used with the locking element from above in a simple manner in the gap of the C-profile. Thus, when depressing the screw and the bearing point and / or the sliding block with respect to the bearing or with the same unlocked locking elements can be pivoted or moved in the desired manner, springs are provided for this purpose, which cooperate with the locking elements accordingly, so that upon depression of the sliding block in Direction of the bottom of the C-profile, the released spring force ensures the desired pivoting or moving the locking elements. The locking elements remain in the new orientation, even if the sliding block or the bearing point is returned by releasing the screw back. Likewise, the locking elements remain in the clamping position when tightening the bow-shaped part.

The locking element may be a lever pivotably mounted at least on one side about a screw which pivots under the force of a spring after releasing a securing means when depressing the sliding block laterally under at least one of the longitudinal rails of the C-profile. The lever may also be a double-sided lever, which is guided around the screw or bearing and has two side legs which engage under rotation of the side rails of the C-profile.

As a securing means can project on the underside of the top wall of the insert at least one pin which engages in a bore in the lever and thus prevents pivoting by the spring. Only when the nut is depressed against the force of the spring device, the lever can slide by its own weight or by a spring with its bore from the pin and the spring can be effective, which pivots the lever. If no pressure is exerted on the screw, then causes the bearing of the sliding block or the nut under the cross spring that the bearing with support surfaces or the nut itself to rest against the locking element, eg. B. a lever passes. By tightening the screw then the composite can be secured and the attachment are made non-positively.

The screw may have in its screw head a slot-shaped receptacle or a hexagonal or other conventional inner receptacle for actuation or projecting with an actuating lug from a bore.

The spring device, which acts directly or indirectly on the sliding block, may be an upwardly biased, one-sided or two-sided mounted, resiliently formed bottom plate of the insert. In one-sided storage, the end is attached to a side wall of the insert. In two-sided storage is to ensure that when pressing the side walls are elastic enough to follow the exercise of pressure on the nut of the changing effective length of the bottom wall accordingly. Also, film hinges can be provided between the side walls of the insert and the bottom plate, which create this balance or perceive the spring function itself. In the case of one-sided storage of the bottom plate as a spring element this is preferably carried out bent. The parts can all be made of plastic. On the bottom plate may also be mounted a pin, as well as on the upper wall of the insert, on which a coil spring is mounted, which stands with a leg in engagement with pivotable locking or clamping means or with the locking element.

In order to enable a disassembly or withdrawal of the insert used in case of need, is provided in a further embodiment that in the upper wall of the insert at least one breakthrough is available, through which the locking or clamping means is accessible and can be swung back when through Pressure the dissolved, but still engaging in the thread in the sliding block screw is depressed simultaneously. For this purpose, the screw must first be pushed out until a depression is even possible.

Also may be provided for guiding the movable receptacle for the sliding block, that in the longitudinal direction of the two side walls of the recording guide parts, for. B. rectangular columns, are provided which are guided guided in openings in the upper wall. The guide columns may also be mounted transversely to the longitudinal direction of the C-profile on the support plate, wherein the bow-shaped part is arranged transversely to the C-profile.

The bow-shaped part with the fastening device can be pre-assembled with the insert, can be pressed directly into the gap of a C-profile unit.

In this case, the locking or clamping element can be automatically released, with a fitter on the roof fixing in a simple manner by namely the entrained fastener simply presses on a module and in the C-profile of the support rail, so that the cooperating spring this pivoted or moved under the longitudinal rails of the C-profile, so that the unit is already fixed in position and also holds the module. To further secure clamping the screw is only tightened, so that a releasable positive connection is given.

Further, the connecting portion of the bow-shaped part may have an elongated recess extending in the longitudinal direction of the bow-shaped part, the depth of which extends over the entire connecting portion and which merges into at least partially circumferential bearing surfaces for a screw head of the screw, wherein the elongated recess and the bearing surfaces so are formed, that in different positions of the bow-shaped part, the underside of the screw head rests on the bearing surfaces and fixes the position of the bow-shaped part. As a result, the screw is securely mounted on / in the bow-shaped part and is also not on the bow-shaped part out.

Also may be arranged on the connecting portion, a sheet having at least two openings which substantially correspond to the diameter of the screw and in which the screw for fixing the fastening position of the bow-shaped part is screwed, wherein through the openings two or more mounting positions of the bow-shaped part are defined. An opening can also serve to receive a locking part which connects the bow-shaped part to the spring device via further means arranged on the locking part (eg via a hook) or defines a specific position or position of the bow-shaped part on the spring device sets.

The metal sheet may extend over the elongate receptacle or it may be provided via the connecting portion channels extending from the openings of the sheet through the connecting portion and are configured so that at least the screw can be inserted. As a result, fixed channels are provided for the screws, which define the positions of the bow-shaped part relative to the spring device. This also prevents slippage of the screw, the bow-shaped part or other parts relative to other components of the fastening device.

Furthermore, channels can also be provided in the connecting section, which proceed extend from openings in the top of the connecting portion through the connecting portion and are configured so that at least the screw can be inserted, wherein the openings define different mounting positions. On the connecting portion may also be arranged a sheet having an elongated, extending in the longitudinal direction of the bow-shaped part opening whose width substantially corresponds to the diameter of the screw and in which the screw for fixing in the fastening position of the bow-shaped part is screwed, wherein two or more attachment positions of the bow-shaped part can be defined by the opening. This also serves to secure storage or recording of the screw and prevents slipping or unintentional adjustment of the components of the fastening device to each other.

As already stated above, the spring device may be formed as a shape spring and having an annular structure, wherein in addition a part of the shape spring on an underside of the bow-shaped part and an opposite part of the form spring can be supported on the support rail.

In further embodiments, the holding portion of the bow-shaped part may be connected at an angle between 100 ° and 150 ° with the support portion of the bow-shaped part.

Moreover, the holding portion may be connected to a center portion at an angle between 140 ° and 160 °, and the center portion may be connected to the support portion at an angle between 140 ° and 160 °, the connecting portion extending over a portion of the holding portion and at least a portion of the Center section extends.

Also, on the side facing the spring device, the connecting section may have a substantially rectangular cut extending transversely to the longitudinal direction of the bow-shaped part, the side walls of the right-angled cut contacting the upper side of the spring device at an end fastening position.

The bow-shaped part may also have recesses which extend transversely to the longitudinal direction of the bow-shaped part. As a result, the bow-shaped part can be made lighter and, moreover, material is thereby saved. This also has a cost effect on the fastening device.

In further embodiments, the first end of the retaining portion may have a projection substantially perpendicular to the wall of the first end of the retaining portion, the wall of the first end of the retaining portion and the underside of the projection in an end mounting position of the bow-shaped portion abut an edge of the surface element and the adjoining side surfaces.

In order to use the bow-shaped part for different heights of the surface elements, as well as to allow easy mounting, the second end of the support portion may be rounded. Furthermore, the bow-shaped part made of a plastic, a metal or a metal alloy.

Further advantages and features as well as embodiments of the invention will become apparent from the figures illustrated in the drawings, which show by way of example different embodiments of the invention. The illustrated embodiments and scales are not intended to be limiting and are merely illustrative of the invention. In addition, it is omitted to present components and to explain which are not essential to the understanding of the invention.

In the drawings show:

1 an example of a fastening device in perspective view with an annular spring as a spring device in an oblique plan view;

2 this in 1 illustrated embodiment of a fastening device in a perspective bottom view;

3 a perspective view of a connected via a bow-shaped part and a spring device with a support rail surface element;

4 a further perspective view of a connected via a bow-shaped part and a spring device with a support rail surface element;

5 a side view of a connected via a bow-shaped part and a spring device with a support rail surface element; and

6 a further side view of a connected via a bow-shaped part and a spring device with a support rail surface element.

The 1 and 2 show in perspective views a part of the fastening device without the bow-shaped part 52 , This is the bow-shaped part 52 on frame bars, not shown, adjacent photovoltaic modules put on, with the undersides on a not shown, across the bow-shaped part 52 extending carrier rail with a C-profile 2 rest.

A screw 4 has a lower threaded portion which is threaded into a sliding block 5 intervenes.

The nut 5 is a molding 34 and has a parallelogram-shaped structure in the plan view, as both 1 as well as out 2 is visible in the rotated position. The molding 34 has a guide section 39 on, which has the same basic structure, ie a parallelogram structure. The threaded hole also penetrates this part. It can be seen that by the parallelogram structure a bearing point for the guide section 39 must be created to pivot the sliding block 5 to allow a defined angle, so that at the ends in the longitudinal direction molded clamping sections 40 by spending the sliding block 5 in the rotational position, as in 2 is shown under the side rails of the C-profile 2 can grab. The recording 9 thus has a rectangular opening with rounded corners, so that this movement of the guide portion 39 is possible. In the wall of the recording 9 is also a groove 41 introduced running over a corner area, so that the one leg 43 the feather 14 that on the one approach 32 is placed against the associated outer edge of the guide portion 39 can grab. About this groove 41 is at the same time a position assurance of the spring leg 43 and thus the spring 14 given. The second leg 44 the feather 14 however, is on the abutment 38 or at a recess in the side leg 36 the spring device 35 supported as a shaped spring on the wall 7 is formed and has an annular structure, which is made 2 it can be seen that the upper section is at the bottom of the bow-shaped part 52 can support.

The wall 7 with the recording 9 and the spring device 35 is made of plastic by injection molding as a molded part, so that even here a simplified production is possible. So now a pivoting of the sliding block 5 through the spring 14 is prevented, are on both sides securing pin 37 formed on the underside against which the narrow side surfaces of the sliding block 5 to grab. Now by pressure on the bow-shaped part 52 the screw 4 after inserting the sliding block 5 into the slot of the C-profile 2 depressed, so the guide section 39 moved down. The molded sliding block 5 also shifts down so that it is flush with the surface under the securing pins 37 arrives. Now the spring 14 unfold their spring force. The thigh 43 causes a rotation of the guide portion 39 in the recording 9 by a defined angle, for example 30 °, so that the clamping section 40 can reach under the not shown side rails of the C-profile. The nut 5 takes the in 2 shown position.

If in this position continue to screw 4 is tightened, it can be seen that a solid bond between the support rail 1 with the C-profile 2 and the overlying inguinal or frame parts on the pressure walls of the bow-shaped part 52 can be produced. It can also be seen that the fastening device can be pre-assembled in the illustrated form, so that the fitter on the roof, for example, only by pressing a temporary backup and by tightening the screw 4 can cause additional assurance of non-positive connection.

The representation in the 1 and 2 further shows that on the guide section 39 an operating lever 42 molded or attached. It can be seen that the composite can be dissolved again after removal of a photovoltaic module via this lever. If the screw 4 Turned off slightly, is caused by the simultaneous pressure on the bow-shaped part 52 the nut 5 is moved down so that it is flush with the surface under the end faces of the safety pin 37 passes and by pressing the operating lever 42 back to the starting position is back, as out 1 seen. When releasing the bow-shaped part 52 it automatically becomes the nut 5 through the spring device 35 pulled upwards and engages with the narrow side surfaces of the clamping section 40 the safety pins 37 , The height of the operating lever 42 is placed so that the displacement of the guide section 39 so high is that slipping over the safety pin 37 is possible.

The embodiment in the 1 and 2 also shows that even in this case a structural unit is given exclusively by pressure on the bow-shaped part 52 in a simple way in a C-profile 2 can be locked, then by the non-positive screw the frame parts on the C-profile 2 the carrier rail 1 to be able to fix. The pivoting movement of the sliding block 5 , which also serves as a clamping element here, is also in this embodiment by a separate spring 14 causes and is independent of the rotational positions of the screw 4 ,

The 3 to 6 show a fastening device with a bow-shaped part 52 which is a surface element 3 or a part thereof, wherein in the figures, for purposes of illustration only an elongate block is shown, on a carrier rail 1 attached. It is in the following Description on the 1 to 6 Reference is made, wherein not all parts in the individual figures are provided with corresponding reference numerals, provided that the combination of the figures, which parts are meant or how they are formed and arranged and what their function.

Here is a section of a support rail 1 shown, wherein the support rail 1 on the top a C profile 2 comprising, that of elongated side walls of the support rail 1 on the one hand and from overhead longitudinal rails 12a and 12b exists, which extend at a certain distance X to each other and form a continuous gap. Such C-profiles 2 are also known, for example, from curtain rails. The C-profiles 2 are particularly suitable for easy installation of various items to be inserted.

A surface element 50 lies on the top 3 a carrier rail 1 up and over a spring device 35 and the bow-shaped part 52 on the carrier rail 1 attached. The bow-shaped part 52 has a holding section 58 on, the surface element 50 on the carrier rail 1 holding. The holding section 58 extends at a certain angle to a connecting portion 52 which in turn extends at a certain angle to a support section. The angles between the holding section 58 , the connecting section 62 and the rest section 60 are in 5 indicated on the axes B, C and D and the angles α and β.

In the in 5 the embodiment shown, the holding section 58 with an investment area 72 such on a first and a second support part 54 . 56 on that a surface element 50 on top 3 the carrier rail 1 is pressed and held. The first edition part 54 and the second edition part 56 serve only to transmit the power and to protect the surface element 50 , which is vulnerable to damage in the design as a solar or photovoltaic module. Therefore, for example, the second edition part 56 be formed rubbery and the first edition part 54 consist of a sheet.

The bow-shaped part 52 also has cutouts 78 on, which is transverse to the longitudinal axis of the bow-shaped part 52 extend. These serve to the weight of the bow-shaped part 52 to reduce, which is beneficial both to the total weight of a fastening device as well as the load on the support rail 1 and the cost of the fastening device.

Due to the design of the bow-shaped part 52 in the edition section 60 , wherein the Auflageendabschnitt 70 rounded, there is the possibility of the bow-shaped part 52 in different applications (eg different heights for surface elements 50 ) (see 5 and 6 ), with the bow-shaped part 52 or the support section 60 always in the support area 74 opposite the top 3 the carrier rail 1 is supported or on the top 3 the carrier rail 1 supported.

Above the holding section 58 and the connection section 62 is partly a sheet metal part 68 on which a Aufnehmung 80 and an opening 82 having. In the opening 82 is a locking part 84 used, which serves the bow-shaped part 52 with the spring device 35 to connect or the position of the bow-shaped part 52 to the spring device 35 to secure or only as a fastener for the connection between the bow-shaped part 52 and the sheet metal part 68 to serve. For the embodiments described above, the locking member 84 a hook 86 on, like in the 5 and 6 shown.

The connecting section 62 of the bow-shaped part 52 each extends over areas 64 and 66 to the holding section 58 and to the holding section 60 , Opposite the connecting section 62 is at the spring device 35 facing side of the bow-shaped part 52 a rectangular cut 76 provided, which can serve to the position or position of the spring device 35 (as in 5 shown).

In the recess 80 is the screw 4 can be used, with the screw 4 completely in the bow-shaped part 52 is retractable.

The embodiment shown in FIGS a holding element as a bow-shaped part 52 ensures a secure connection of surface elements 50 on a carrier rail 1 or a positioning and fixing a surface element 50 on a carrier rail 1 , Especially if only a surface element 50 or one side of a surface element 50 is to be held by a fastening device, a secure attachment is achieved by the fastening device shown and described. After inserting the fastener into the C-profile 2 the carrier rail 1 As described above, the fastening device is within the C-profile 2 added. Subsequently, by pressing on the bow-shaped part 52 or on the holding section 58 or the connecting section 62 of the bow-shaped part 52 the fastening device within the C-profile 2 be locked. In this case, the spring device 35 cocked and the bow-shaped part 52 around a certain amount towards the top 3 the carrier rail 1 emotional. Then the bow-shaped part lies 52 or the holding section 58 of the bow-shaped part 52 on an edge of the surface element 50 on or, thereby already a fixation of the surface element 50 can be done. After that, the screw 4 further twisted so that a secure connection is given or the connection is locked. A pivoting of the bow-shaped part 52 the spring device 35 and slipping of the surface element 50 around the axis A or in the direction parallel to the axis A is excluded because the pressure or the force on the bow-shaped part 52 can be absorbed evenly or because the bow-shaped part 52 over the holding section 58 on the surface element 50 and at the same time over the support section 60 on the top 3 the carrier rail 1 is supported.

A release of the bow-shaped part 52 from the surface element 50 or the surface element 50 from the carrier rail 1 takes place as above with reference to 1 and 2 described.

The bow-shaped part 52 can be made of plastic or metal, in one embodiment of plastic, the sheet metal part 68 by ultrasonic welding to the bow-shaped part 52 can be applied. Alternatively, a connection or locking via the locking part 84 whose hook 86 in a corresponding recess or receptacle in the bow-shaped part 52 engages done.

LIST OF REFERENCE NUMBERS

1

support rail

2

C-section

3

top

4

screw

5

sliding block

7

upper wall

9

admission

10

spring means

11

ground

12a

side rails

12b

side rails

14

feather

32

approach

34

molding

35

spring means

36

side leg

37

Security bolt

38

abutment

39

guide section

40

clamping section

41

groove

42

actuating lever

43

spring leg

44

spring leg

50

surface element

52

bow-shaped part

54

first edition part

56

second edition part

58

holding section

60

bearing section

62

connecting portion

64

Area

66

Area

68

sheet metal part

70

Auflageendabschnitt

72

plant area

74

support area

76

incision

78

recess

80

recess

82

opening

84

locking member

86

hook

A

axis

B

axis

C

axis

D

axis

X

opening width

α

angle

β

angle

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

• WO 2009/091238 A1 [0005]
• WO 03/098126 Al [0005]
• DE 102008000293 A1 [0006]
• EP 1826507 A2 [0007]

Claims (26)

Fastening device for non-positive connection of a surface element ( 50 ) on a C-profile ( 2 ) a carrier rail ( 1 ), comprising a holding element, which by means of a screw ( 4 ) and a sliding block ( 5 ) with threaded hole on the C-profile ( 2 ), which retaining element is the surface element ( 50 ) on the top ( 3 ) of the C-profile ( 2 ), characterized by a in the C-profile ( 2 ) usable insert, which is narrower than the opening width (X) of the C-profile ( 2 ) and at least one wall ( 7 ) with at least one passage opening for passing the screw ( 4 ) and a recording ( 9 ) for the sliding block ( 5 ), which sliding block ( 5 ) and / or which recording ( 9 ) by applying pressure to the threaded hole in the sliding block ( 5 ) screwed in ( 4 ) against the force of a spring device ( 35 ) in the direction of the ground ( 11 ) of the C-profile ( 2 ) is displaceable, and by a pivotable, in use mounted sliding block ( 5 ) with a locking element, which is pivotally mounted in the insert, wherein, as a function of the pressure on the screw ( 4 ) caused movement of the sliding block ( 5 ) the locking element under at least one side rail ( 12a . 12b ) of the C-profile ( 2 ) and at least one stop or securing pin ( 37 ) on the underside of the wall and the pivoting movement by a spring supported on or in use ( 14 ) is releasable, and the holding element is a bow-shaped part ( 52 ), whose first end is in an attachment position on the top ( 3 ) of the surface element ( 52 ) is supported in the edge region and the second end in the attachment position with a support portion ( 60 ) on the carrier rail ( 1 ), wherein the bow-shaped part ( 52 ) via a connecting section ( 62 ) between a holding section ( 58 ) and the support section ( 60 ) pivotable on the spring device ( 35 ) is arranged, and wherein the screw ( 4 ) from the connecting section ( 62 ) via the spring device ( 35 ) to the nut ( 5 ). Fastening device according to claim 1, characterized in that the wall ( 7 ) via a spring device ( 35 ), in particular a at the bottom of the bow-shaped part ( 52 ) supporting ironing or annular shape spring is supported, which with the side legs ( 36 ) in sections in the longitudinal gap of the C-profile ( 2 ) engages with the opening (X). Fastening device according to claim 2, characterized in that the side legs ( 36 ) of the spring device ( 35 ) on the wall ( 7 ) or the insert are fixed and form a unit with this and at the bottom of the bow-shaped part ( 52 ) are supported. Fastening device according to claim 3, characterized in that the wall ( 7 ), the receptacle 9, the spring legs ( 36 ) and a connecting part under the bow-shaped part ( 52 ) consists of plastic insert and is made as an annular resilient assembly. Fastening device according to claim 2, characterized in that the receptacle ( 9 ) has a rectangular and tubular structure or a round bearing bush into which a guide section ( 39 ) of the formed as a molded part sliding block ( 5 ) engages, and that on the guide section ( 39 ) a lever or a button is attached to or with which a spring ( 14 ) cooperates such that the sliding block ( 5 ) after passing over the at least one lug or locking pin ( 37 ) rotates at a defined angle and with an attached clamping section ( 40 ) the side rails ( 12a . 12b ) of the C-profile ( 2 ). Fastening device according to claim 5, characterized in that the guide section ( 39 ) of the formed as a molded part sliding block ( 5 ) has a substantially parallelogram-shaped structure with rounded corners that the sliding block ( 5 ) has at least one extended parallelogram-shaped configuration and in the unlocked state with the longitudinal sides in the longitudinal direction of the bow-shaped part ( 52 ) and with the short oblique sides on at least one securing pin ( 37 ) lesser height is supported, that at least at a corner region of the guide section ( 39 ) of the molded part is a spring leg ( 43 ) of a two-legged coil spring ( 14 ) and that when pressure is exerted on the screw ( 4 ) the nut ( 5 ) over the securing pin ( 37 ) and so far through the spring ( 14 ) is pivotable until the molded clamping sections ( 40 ) the side rails ( 12a . 12b ). Fastening device according to claim 6, characterized in that the spring ( 14 ) on an approach ( 32 ) on the insert or the wall ( 7 ) and with one leg ( 43 ) in a groove-shaped cutout ( 41 ) in the recording ( 9 ) engages and at a surface portion of the guide portion ( 39 ), while the other leg ( 44 ) abut against an abutment in the insert, the wall ( 7 ) or on the one leg ( 36 ) of the spring device ( 35 ) is supported. Fastening device according to claim 5 or 6, characterized in that the guide section ( 39 ) has at least one length which is greater than the necessary displacement to Release of the sliding block ( 5 ) over the securing pin ( 37 ). Fastening device according to one of claims 5 to 8, characterized in that on the guide section ( 39 ) an actuating lug or an actuating lever ( 42 ) is formed. Fastening device according to one of the preceding claims, characterized in that the surface element ( 3 ) is a solar or photovoltaic module. Fastening device according to one of the preceding claims, characterized in that on the bow-shaped part ( 52 ) in the connecting section ( 62 ) resilient latching lugs are provided with locking lugs, which pass through holes in the spring device ( 35 ) are pluggable and with locking surfaces on the locking lugs an inner side of the spring device ( 35 ) under attack. Fastening device according to one of the preceding claims, characterized in that the parts of the fastening device with the exception of the spring ( 14 ) consist of plastic. Fastening device according to one of the preceding claims, characterized in that the bow-shaped part ( 52 ) with the fastening device is a preassembled unit and the insert directly in the column of the C-profile ( 2 ) is depressible. Fastening device according to one of the preceding claims, characterized in that the connecting portion ( 62 ) of the bow-shaped part ( 52 ) in the longitudinal direction of the bow-shaped part ( 52 ) extending elongate recess ( 80 ) whose depth extends over the entire connecting section ( 62 ) and which in at least partially circumferential bearing surfaces for a screw head of the screw ( 4 ), wherein the elongated recess ( 80 ) and the bearing surfaces are formed so that in different positions of the bow-shaped part ( 52 ) the bottom of the screw head rests on the support surfaces and the position of the bow-shaped part ( 52 ) fixed. Fastening device according to one of the preceding claims, characterized in that on the connecting portion ( 62 ) is arranged a metal sheet, which has at least two openings which substantially the diameter of the screw ( 4 ) and in which the screw ( 4 ) for fixing the fastening position of the bow-shaped part ( 52 ) is screwed, wherein through the openings two or more mounting positions of the bow-shaped part ( 52 ) are defined. Fastening device according to claim 15, characterized in that the sheet metal over the elongated recess ( 80 ) or that in the connecting section ( 62 ) Channels are provided, which extend from the openings of the sheet through the connecting portion ( 62 ) and are designed such that at least the screw ( 4 ) can be used. Fastening device according to one of the preceding claims, characterized in that in the connecting portion ( 62 ) Channels are provided which, starting from openings in the upper side of the connecting portion ( 62 ) through the connecting section ( 62 ) and are designed such that at least the screw ( 4 ), wherein the openings define different attachment positions. Fastening device according to one of the preceding claims, characterized in that on the connecting portion ( 62 ) a sheet is arranged, which is an elongated, in the longitudinal direction of the bow-shaped part ( 52 ) extending opening whose width substantially to the diameter of the screw ( 4 ) and into which the screw ( 4 ) for fixing the fastening position of the bow-shaped part ( 52 ) is screwed, wherein through the opening two or more mounting positions of the bow-shaped part ( 52 ) are definable. Fastening device according to one of the preceding claims, characterized in that the spring device ( 35 ) is formed as a shape spring and has an annular structure, wherein a part of the shape spring at an underside of the bow-shaped part ( 52 ) and an opposite part of the shaped spring on the support rail ( 1 ) is supported. Fastening device according to one of the preceding claims, characterized in that the holding section ( 58 ) at an angle between 100 ° and 150 ° with the support section ( 60 ) connected is. Fastening device according to one of the preceding claims, characterized in that the holding section ( 58 ) is connected to a center section at an angle between 140 ° and 160 ° and the center section is connected to the support section at an angle of between 140 ° and 160 °, wherein the connecting section (FIG. 62 ) over a part of the holding section ( 58 ) and at least part of the middle section. Fastening device according to one of the preceding claims, characterized that the connecting section ( 62 ) on the spring device ( 35 ) side facing a substantially rectangular incision ( 76 ), which is transverse to the longitudinal direction of the bow-shaped part ( 52 ), wherein in an end mounting position, the side walls of the rectangular incision ( 76 ) at the top of the spring device ( 35 ) and at a side portion of the spring device ( 35 ) issue. Fastening device according to one of the preceding claims, characterized in that the bow-shaped part ( 52 ) Recesses ( 78 ) transversely to the longitudinal direction of the bow-shaped part ( 52 ). Fastening device according to one of the preceding claims, characterized in that the first end of the holding portion ( 58 ) has a projection which is substantially perpendicular to the wall of the first end of the holding portion (FIG. 58 ), wherein the wall of the first end of the holding portion ( 58 ) and the underside of the projection in an end mounting position of the bow-shaped part ( 52 ) on an edge of the surface element ( 50 ) and abut the adjacent side surfaces. Fastening device according to one of the preceding claims, characterized in that the second end of the support portion ( 60 ) is rounded. Fastening device according to one of the preceding claims, characterized in that the bow-shaped part ( 52 ) consists of plastic, a metal or a metal alloy.

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