Patent Publication Number: US-2015060619-A1

Title: Solar module bracket

Description:
The invention relates to a solar module bracket having a base support which is fastenable in particular on a roof and a yoke support for holding a module support rail, wherein the yoke support comprises a fastening region which is releasably connected to the base support. 
     A solar module bracket of this type is known from DE 102 13 902 A1. It serves for the purpose of fastening solar modules on a roof of a building. To this end, the base support is fastened on a roof structure, for example on a rafter. The yoke support, which is releasably fastened on the base support, as a result of its curved form, engages around a roof covering, for example a roof tile, such that its free end region lies above the roof covering and is able to hold a module support rail there on which at least one solar module is fastened. As the solar module is exposed to the weather, it is, for example, covered with a load of snow in winter or is acted upon with the force of the wind in a storm. On account of its structure, the known solar module bracket is less suitable to withstand the changes in the different external forces sufficiently over a longer period. 
     Consequently, the object underlying the invention is to provide a solar module bracket which comprises a simple structure, is cost-efficient to produce and has a high degree of stability. In particular, over and above this, it should be suitable to compensate for changes in length caused by temperature fluctuations. 
     Said object is achieved according to the invention in that the fastening region is formed by a yoke portion of the yoke support which comprises several arms, wherein each arm of the yoke portion is releasably connected to the base support. According to the invention, a load which is to be diverted from the yoke support to the base support is consequently discharged via several arms such that each arm only has to accept a part force, thereby producing a very stable structure for the solar module bracket. In addition, several arms prevent the yoke support from tilting in an inadmissible manner as, on account of the arms that are located spaced apart from one another, support points that lie spaced apart from one another are created. 
     According to a further development of the invention, it is provided that the fastening region is associated with a first end region of the yoke support. The fastening of the yoke support on the base support is consequently effected in said first end region. 
     In addition, it is advantageous when the yoke support comprises a yoke center region which merges integrally into a branching region which, in turn, merges integrally into the arms. The yoke center region is developed in an arcuate manner, in particular in an approximately U-shaped manner, in order to engage around the roof covering, for example the named roof tile. Said U-shaped yoke center region merges integrally into the named branching region which forms the common root for the arms which proceed from there and are integrally connected to the branching region. All in all, consequently, there is integrality between the yoke center region and the arms. 
     According to a preferred embodiment of the invention, two arms (precisely two arms) are provided, which results in the branching region being developed as a V-shaped branching region. 
     In addition, it is advantageous when the longitudinal extensions of the arms enclose at least in portions an acute angle. Proceeding from the branching region, the arms realize the named acute angle with respect to one another, which results in the free ends of the arms being located at a spacing from one another and consequently spanning a large and secure standing area. 
     A further development of the invention provides that at least one of the arms is an angled arm. As a result of the angled arm, the arm portion thereof which is associated with the free end is able to assume a parallel position with respect to the other non-angled arm such that the fastening of the two arms on the base support can be realized in the same manner. 
     A further development of the invention provides that the free ends of the arms are connected to the base support by means of slot nut connections. It is provided, in particular, that the free ends of the arms comprise slot nuts and that the base support is provided with receiving grooves, in particular C-profile grooves. By simply pushing the slot nuts into the C-profile grooves, the yoke support can consequently be releasably held on the base support. 
     In particular, the base support is realized as a base plate such that there is a flat but sufficiently large structure with regard to area. As an alternative to this, in a preferred manner the base support comprises a base plate on which are arranged, for example, means which serve for connecting the arms to the base support. 
     A further development of the invention provides that the base support comprises at least one fastening hole which lies between the arms. In order to fasten the base support for example to the mentioned roof of the building, a fastening element, in particular a stainless steel wood screw, is inserted into the fastening hole and then, for example, screwed into the rafters. As the mentioned fastening hole lies between the arms, a high degree of stability is ensured as the fastening element lies close to the arms, namely even between the arms. In a preferred manner, several fastening holes are provided in the base support in order to be able to insert further fastening elements, it being possible for said further fastening holes also to be located at least in part between the arms and/or also outside the region of the base support that is located between the arms in order to make it possible to vary the fastening or screwing position of the base plate on, for example, a rafter, a purlin, a batten and so on. According to an alternative preferred embodiment, at least one fastening hole lies outside a region of the base support which lies between the arms in order to ensure good force distribution and/or simple assembly of the base support. 
     A further development of the invention provides that the yoke support spans a yoke center plane, wherein the arms lie in the yoke center plane. On account of its curved form, in particular U-shaped form, the yoke support spans the mentioned yoke center plane. The arms also lie in the same plane. This means that all or both arms lie in said (same) plane and there is for instance no structure where one arm lies to the right of the named yoke center plane and the other arm lies to the left of said plane. 
     It is advantageous when the yoke support comprises a yoke width which is constant or approximately constant over the entire longitudinal development of the yoke support. Accordingly, the yoke center region, the branching region and the arms are realized with the same width or approximately the same width. It is provided, in particular, that the yoke support is produced as an extruded component which, after extrusion, is simply cut into “disks”, the disk thickness corresponding to the mentioned yoke width. 
     It is advantageous when the yoke support comprises a module holding region which forms a second end region of the yoke support. The module support rail is fastened in said second end region. A clamping holder serves for the fastening—according to a further development of the invention. This means that the module support rail is held on the yoke support as a result of clamping. 
     It is advantageous when at least one of the arms extends in a straight line and is oriented in a perpendicular manner with respect to the plane of the base plate. It is provided in this case in a preferred manner that the angled arm comprises an arm portion which is oriented in a perpendicular manner with respect to the plane of the base plate. In particular, it can be provided in this case that the arm portion is connected to the base support by means of one of the slot nut connections. The above development produces very stable fastening of the yoke support on the base support. 
     According to a further development of the invention, it is provided that the yoke center region comprises a bending to which the branching region connects in a direct manner. As a result, a flat structure of the solar module bracket is achieved in order to be able to engage under the mentioned roofing tile. 
     Finally, it is advantageous when the slot nut connections are realized as displacing connections. This means that they are not secured—for example by way of clamping means—but that the slot nuts are able to move in the receiving grooves, in particular C-profile grooves, in the longitudinal direction of the groove in order to be able to compensate for thermal expansion in this manner. This prevents the build-up of material stresses. 
     Several solar module brackets are preferably always provided in order to hold a module support rail, a stop device which prevents the yoke support of said solar module bracket being able to slip out of the associated base support then being provided at least in the case of one of the solar module brackets. 
     According to a further development of the invention, it is provided that the slot nut connections comprise in each case a slot nut which is provided on the free end of the respective arm and at least one receiving means, in particular receiving groove, for the slot nut, which is provided on the base support. In particular, the receiving groove comprises a longitudinal extension along which the slot nut is arranged so as to be pushable into the receiving groove and displaceable in the receiving groove. A tongue and groove connection between the yoke support and the base support is created therefore as a result of the slot nut connections. In this case, this is a simple and flexible connection as the slot nuts can be displaced into the receiving grooves for adaptation to local conditions in order to adjust a desired positioning of the yoke bracket relative to the base support. In addition, thermal stresses are avoided as a result of said displaceable connection. 
     It is preferably provided that the slot nut is realized as an L-slot nut or a T-slot nut. An L-slot nut is to be understood as an L-shaped slot nut, i.e. the free end of the associated arm is realized “in a kinked manner” such that, all in all, the end region of the arm comprises an L-form. In a corresponding manner, a T-slot nut is to be understood as a T-shaped slot nut, i.e. the end region of the associated arm comprises a T-form. 
     It is advantageous when the receiving groove is realized as a push-in receiving groove or a hook-in receiving groove. A push-in receiving groove is to be understood as a receiving groove into which the associated slot nut can be inserted by pushing it in the direction of the longitudinal extension of the receiving groove. Due to the dimensioning of the longitudinal opening and of the slot nut, it is not possible to insert the slot nut into the push-in receiving groove through its longitudinal opening. In particular, the width of the longitudinal opening is smaller than the width of the slot nut. A hook-in receiving groove is to be understood as a receiving groove, the longitudinal opening of which is dimensioned in such a manner that it is possible to insert the associated slot nut into the receiving groove through the longitudinal opening thereof, as a result of which the assembly is able to be made easier. In particular, the width of the longitudinal opening is greater than the width of the slot nut. In order to achieve a tongue and groove system between the slot nut and the hook-in receiving groove during assembly, it is first of all necessary to insert the slot nut into the longitudinal opening of the receiving groove. This is effected transversely with respect to the longitudinal extension of the receiving groove. The slot nut then has to be moved in the receiving groove. The moving is effected transversely with respect to the insertion movement and transversely with respect to the longitudinal extension of the receiving groove. As a result, a tongue and groove system between the slot nut and the hook-in receiving groove is ensured overall. The yoke support is therefore connected to the base support by hooking the slot nut into the hook-in receiving groove or is separated from said base support by unhooking it. Naturally, the slot nut can also be inserted into the hook-in receiving groove as a result of pushing it in (in the direction of the longitudinal extension of the hook-in receiving groove) or can be removed therefrom as a result of pushing it out. 
     According to an advantageous further development of the invention, it is provided that several receiving grooves, which are at different height intervals from the plane of the base plate, are provided on the base support for each groove. Height adjustability of the yoke support relative to the base support and in particular to the roof on which the base support is fastened is achieved as a result of the several receiving grooves per slot nut. Consequently, the solar module bracket can be adapted to the specific conditions of the roof in order to ensure always that the roof covering is able to be engaged around by the yoke support. The solar module bracket can also be used in a versatile manner as a result of said realization, in particular on different types of roof structures and roof coverings. 
     A further development of the invention provides that the several receiving grooves are provided arranged one above another on a holder which is provided on the base plate. The receiving grooves are realized for the at least two slot nuts as a result of the holder and/or the holder in combination with the base plate. The base support is preferably realized integrally with the base plate and the holder, in particular as an extruded component. 
     According to a preferred further development of the invention, it is provided that the holder comprises two longitudinal walls, which project away from the base plate in a perpendicular manner and are parallel to one another, with in each case several cross walls, wherein the receiving grooves are realized between the base plate and two of the cross walls as well as between the further cross walls. In a preferred manner the cross walls project away from each of the longitudinal walls in a perpendicular manner such that the cross walls extend parallel to the base plate and parallel to one another. The distance between the base plate and the adjacent cross walls as well as the distance between adjacent cross walls is preferably the same size such that identical receiving grooves are realized. 
     It is provided in particular that a support strut, which is associated with the base support, for the arms is arranged between the longitudinal walls. In an advantageous manner, the arms are guided along the support strut when the slot nuts are pushed into the receiving grooves, as a result of which the slot nuts are prevented from canting in the receiving grooves. The support strut preferably defines the receiving grooves. In a preferred manner, the support strut is preferably also produced during the extrusion of the base support. 
     In particular, at least one clamping safety device is provided for effectively securing the relative position of the yoke support and the base support with respect to one another in particular in the direction of the longitudinal extensions of the receiving grooves. Therefore, the yoke support is held fixedly on the base support and the slot nuts are prevented from being pushed into the receiving grooves by means of the clamping safety device. The clamping safety device also prevents the slot nuts from slipping out of the receiving grooves or—where the receiving groove is realized as a hook-in receiving groove—from being able to unhook by releasing the tongue and groove system. 
     According to a preferred further development of the invention, it is provided that the clamping safety device comprises at least one clamping screw which is screwed into a threaded bore of the base support and is supported on the yoke support and/or at least one clamping screw which is screwed into a threaded bore of the yoke support and is supported on the base support. A clamping force, which acts onto the yoke support transversely with respect to the push-in direction (or longitudinal extension of the receiving grooves) and/or insertion direction (with reference to the hook-in receiving groove), is generated as a result of the clamping screw, as a result of which said yoke support is secured relative to the base support. 
     In addition, according to a further development of the invention, it is provided that the clamping safety device comprises at least one locating screw which, by way of its thread, is screwed into a screw channel which is realized between an arm and a longitudinal web of the base support which proceeds from the base plate and defines at least one of the receiving grooves in regions. The receiving groove is preferably a hook-in receiving groove. The locating screw then serves for the purpose of locating the slot nuts in the receiving grooves in their tongue and groove position. To this end, as a result of the diameter of the locating screw a force is exerted onto at least one of the arms such that the slot nuts are urged into their tongue and groove position. The locating screw prevents, on the one hand, the slot nuts being displaced along the longitudinal extension of the receiving grooves and, on the other hand, the tongue and groove system being released and the slot nuts slipping out of the longitudinal opening of the respective receiving groove. 
     The screw channel can be formed by a toothing provided on the longitudinal web of the base support and a toothing provided on the arm such that overall there is a type of internal thread for the locating screw. As an alternative to this, it can also be a self-tapping locating screw which generates a threaded toothing in the screw channel itself. 
    
    
     
       The drawings illustrate the invention by way of an exemplary embodiment, in which: 
         FIG. 1  shows a perspective representation of a solar module bracket according to a first exemplary embodiment, 
         FIG. 2  shows a cross section through the solar module bracket of  FIG. 1  with a module support rail, 
         FIG. 3  shows a perspective representation of a solar module bracket according to a second exemplary embodiment in a first position, 
         FIG. 4  shows a cross section through the solar module bracket of  FIG. 3  in a second position, 
         FIG. 5  shows a top view of the solar module bracket of  FIG. 3 , 
         FIG. 6  shows a perspective view of a part shown solar module bracket according to a third exemplary embodiment, 
         FIG. 7  shows a cross section though the solar module bracket of  FIG. 6 , 
         FIG. 8  shows a perspective view of a part shown solar module bracket according to a fourth exemplary embodiment, and 
         FIG. 9  shows a cross section through the solar module bracket of  FIG. 8 . 
     
    
    
       FIG. 1  shows a solar module bracket  1  according to a first exemplary embodiment which comprises a base support  2  and a yoke support  3 . The yoke support  3  comprises a fastening region  4 , by way of which it is fastened releasably on the base support  2 . The fastening region  4  is associated with a first end region  5  of the yoke support  3 . The yoke support  3  comprises a second end region  6  which forms a module holding region  7 . The module holding region  7  has a clamping holder  8  ( FIG. 2 ) for a module support rail  9 . The clamping holder  8  has a first clamping holder part  10  which is only shown in  FIG. 2  and not, however, in  FIG. 1 . A second clamping holder part  11  which is associated with the clamping holder  8  is formed by an end piece  12  of the yoke support  3 . 
     The yoke support  3  has a yoke center region  13  which is developed in a substantially U-shaped manner and which serves the purpose of engaging around a roof covering, for example a roof tile, in such a manner that the fastening region  4  lies below the roof covering and the module holding region  7  lies above the roof covering. The fastening region  4  comprises a branching region  14  from which two arms  15  and  16  proceed. The branching region is developed in a V-shaped manner, therefore forms a V-branching region  17 . The branching region  14  is integrally connected to a bending  18  of the yoke center region  13 . The arms  15  and  16  are also connected integrally to the branching region  14  and consequently also to the bending  18  and to the yoke center region  13 . The arms  15  and  16  form a yoke portion  19  of the yoke support  3 . The arm  15  comprises a straight-lined development, i.e. it extends in a straight line between the branching region  14  and the base support  2 . The arm  16  is realized as an angled arm  20  which has an arm part  21  and an arm portion  22  which enclose an obtuse angle. The arm portion  22  extends parallel to the longitudinal extension of the arm  15 . The arm part  21  encloses an acute angle with the arm  15 . 
     The free ends  23  and  24  of the arms  15  and  16  are releasably connected to the base support  2  by means of slot nuts  25  and  26 . The slot nut connections  25  and  26  comprise slot nuts  27  and  28  which are connected integrally to the arms  15  and  16  and are pushed into receiving grooves  29  and  30  of the base support  2 . The receiving grooves  29  and  30  are developed as C-profile grooves. In particular, they are realized as push-in receiving grooves  73 . The pushing in is effected in the direction of the longitudinal extension of the push-in receiving grooves  73 . The slot nuts  27  and  28  are realized as T-slot nuts  101  and  102 . 
     The base support  2  is realized as a base plate  31 . The underside  32  of the base plate  31  forms a fastening plane  33 . The two receiving grooves  29  and  30  extend parallel to one another and extend over the entire width of the base plate  31  such that it is possible to push the slot nuts  27  and  28  of the arms  15  and  16  in at the side. For fastening the base support  2  or the base plate  31 , said base support or base plate comprises several fastening holes  34 , the arrangement being in such a manner that several fastening holes  34  lie between the receiving grooves  29  and  30  and consequently between the arms  15  and  16 . The fastening holes  34  which are situated between the receiving grooves  29  and  30  are realized in a preferred manner as elongated holes. The remaining fastening holes  34  are developed as circular holes and are arranged in rows, the fastening holes  34  which are developed as elongated holes also being arranged in rows with respect to one another, the two rows of holes extending parallel to one another and parallel to the receiving grooves  29 ,  30 . With regard to the fastening holes  34  which are realized as elongated holes, it must be mentioned that only two fastening holes  34  can be seen in  FIG. 1 . However, there is also a third fastening hole  34  which is covered by the arm  16  and is located centrally between the two that are visible. The receiving groove  29  extends along a side edge of the base plate  31 . The receiving groove  30  extends approximately in the center of the base plate  31 . The circular fastening holes  34  are situated in the vicinity of the side edge  36  which is located opposite the side edge  35 . 
     The first clamping holder part  10  is realized as an angle bracket  37  and has a first leg  38  and a second leg  39  which is arranged at an angle with respect to said first leg. The leg  38  comprises a fastening hole  40  which is passed through by a clamping screw  41  which is screwed into a threaded bore  42  of the yoke support  3 . The angle bracket  37  comprises a clamping hook  43  which interacts with a retaining hook  44  of the module support rail  9  which is H-shaped in cross section. When the clamping screw  41  is tightened, the angle bracket  37  is moved in the direction of the yoke support  3 , as a result of which the clamping hook  43  tensions the retaining hook  44  in the direction of the end piece  12 , as a result of which the module support rail  9 , which is supported on the top surface  45  of the end piece  12  and preferably also on a side wall  46  of the angle bracket  37 , is secured. 
     Several solar module brackets  1 , which are all connected to the same module support rail  9 , are preferably arranged on the roof spaced apart from one another. One solar module bracket or several solar module brackets can then be fastened on the module support rail  9 . 
     According to  FIG. 1 , the solar module bracket  1  or the yoke support  3  comprises a yoke center plane  47 . The sectional representation in  FIG. 2  lies in said yoke center plane  47 . It can be seen that the fastening plane  33 , which is formed by the underside  32  of the base plate  31 , is oriented perpendicularly on the yoke center plane  47 , the longitudinal extensions of the receiving grooves  29  and  30  (arrow  48 ) extending parallel to the fastening plane  33  and lying perpendicular to the yoke center plane  47 . 
     It can be seen in  FIGS. 1 and 2  that the two arms  15  and  16  lie in the yoke center plane  47 . The yoke support  3  comprises a yoke width b which is the same size overall, that is constant, both in the region of the end piece  12 , in the yoke center region  13 , in the region of the bending  18 , in the branching region  14  and in the arms  15  and  16  and also in the regions of the slot nuts  27  and  28  such that the latter extend over the entire yoke width b. It can be seen in  FIG. 1  that the width of the base plate  31  is greater than the width of the yoke support  3  such that the yoke support  3  is able to be displaced along the longitudinal extension of the receiving grooves  29  and  30  (arrow  48 ). Regarding the integrality of the yoke support  3 , it must also be said that that the yoke center region  13  merges integrally into the second end region  6  and consequently also into the end piece  12 . 
     When assembling the solar module bracket  1  according to the invention, the procedure is as follows: First of all, the base support  2  is fastened on the roof, in particular on a rafter, a purlin and/or a batten, by at least one fastening means being screwed into a fastening hole  34  of the row of holes lying between the arms  15  and  16 . In addition, at least one further fastening means can be inserted into one of the other fastening holes  34 , in particular a fastening hole  34  of the other row of holes. The yoke support  3  is then assigned to the base support  2  by the slot nuts  27  and  28  being inserted into the receiving grooves  29  and  30 , care being taken to ensure that the yoke center region  13  engages around a roof covering, for example a roof tile. As a result, the module holding region  7  comes to lie above the roof tile such that the module support rail  9  is able to be held there as a result of clamping. At least one solar module bracket is then fastened on the module support rail  9 . 
       FIGS. 3 to 5  show a solar module bracket  1  according to a second exemplary embodiment. Said solar module bracket  1  is realized in a similar manner to the solar module bracket  1  according to the first exemplary embodiment such that, in this respect, reference is made to the description concerning  FIGS. 1 and 2  and purely the differences will be discussed below. The clamping bracket  8  is certainly not shown in  FIGS. 3 to 5 , but the clamping bracket  8  is naturally also provided here—as is shown in  FIG. 2 . 
     The arm  15  comprises a substantially straight-lined development, that is it extends in a straight line between the branching region  14  and the base support  2 . It comprises a curvature purely in the vicinity of the branching region  14 . The arm  16  comprises—proceeding from the branching region  14 —a curved arm portion  49  and an arm portion  50  which extends in a straight line and connects thereto. The lineally extending arm portion  50  of the arm  16  extends parallel to the lineal region of the arm  15 . The slot nuts  27  and  28  ( FIG. 4 ), which are provided on the free ends  23  and  24  of the arms  15  and  16 , are realized as L-slot nuts  51  and  52 . The L-slot nuts  51  and  52  comprise in each case a slot nut web  53 ,  54  which proceeds in a perpendicular manner from the respective arm  15 ,  16 , the slot nut webs  53  and  54  projecting away from the arms  15  and  16  in opposite directions and pointing away from one another. A connecting web  55 , which connects the arms  15  and  16  and is realized integrally with the arms  15  and  16 , is provided between the arms  15  and  16 . The connecting web  55  is provided approximately half way up the arms  15  and  16 . The connecting web  55  comprises on its underside  56 , which faces the free ends  23  and  24  of the arms  15  and  16 , two longitudinal notches  57  and  57 ′ which extend in a parallel manner. In each case one side of the longitudinal notches  57  and  57 ′ is defined by the arms  15 ,  16 . A threaded bore  58  is additionally provided in the connecting web  55 . The threaded bore  58  is provided in particular centrally in the connecting web  55 . An opening  59  is provided in the arm  16 , in the curved arm portion  49  thereof. The opening  59  is in alignment with the threaded bore  58 . 
     The base support  2  comprises a base plate  31 . A holder  60  is provided on the base plate  31 . The holder  60  comprises two longitudinal walls  61  and  62  which project away from the base plate  31  at a right angle and extend in a parallel manner. The one longitudinal wall  61  is arranged on a longitudinal edge  63  of the base plate  31  and the other longitudinal wall  62  is arranged approximately centrally on the base plate  31 . Three cross walls  64  project in each case away from the longitudinal walls  61  and  62  in a perpendicular manner. The cross walls  64  project away from the respective longitudinal wall  61 ,  62  in the direction of the other longitudinal wall  62 ,  61 . The distance between the base plate and the next cross wall  64  and the distance between adjacent cross walls  64  and a longitudinal wall  61 ,  62  is always the same size. A support strut  65  of the base support  2  is arranged on the base plate  31  between the longitudinal walls  61  and  62 . The support strut  65  comprises two side walls  66  and  67 , which project away from the base plate  31  in a perpendicular manner and extend parallel to the longitudinal walls  61  and  62 , and one cover wall  68  which connects the side walls  66  and  67  at their free ends. Two longitudinal projections  70  and  71 , which extend parallel to one another and are able to engage in longitudinal notches  57  and  57 ′ of the connecting web  55 , are realized on the top side  69  of the cover wall  68  in the edge regions thereof. 
     Receiving grooves  72  and  72 ′, which are realized as push-in receiving grooves  73 , are defined by the base plate  31 , the longitudinal walls  61  and  62  and the cross walls  64 . Each longitudinal wall  61  or  62  has associated therewith therefore three receiving grooves  72  or  72 ′ which are at different height distances from the base plate  31 . A space is realized in each case between the free ends of the cross walls  64  and the side walls  66  and  67  of the support strut  65 . The receiving grooves  72  and  72 ′ and the spaces are dimensioned in such a manner that the L-slot nuts  51  and  52  are able to engage in each case in one of the receiving grooves  72 ,  72 ′ and that the L-slot nuts  51  and  52  are held in the respective receiving groove  72 ,  72 ′ and the arms  15  and  16  in the spaces so as to be displaceable (in the direction of the longitudinal extension of the receiving grooves  72  and  72 ′). 
     In addition, a clamping safety device  74  is provided. The clamping safety device  74  comprises a clamping screw  75  which—in the mounted state of the solar module bracket  1  according to FIG.  4 —passes through the opening  59  provided in the arm  16  and is screwed into the threaded bore  58  of the connecting web  55  and is supported on the cover wall  68 . 
     The fastening holes  34  are provided in the base plate  31  outside the holder  60 , that is outside the region lying between the longitudinal walls  61  and  62 . In this case, in each case three fastening holes  34  form a row of holes which extends parallel to the longitudinal extension (arrow  48 ) of the receiving grooves  72  and  72 ′. In this case, the fastening holes  34  of the one row of holes are realized as circular holes and the fastening holes  34  of the other row of holes are realized as elongated holes. The longitudinal axis of the elongated holes extends transversely, in particular in a perpendicular manner, with respect to the receiving grooves  72  and  72 ′. 
     With regard to the assembly of the solar module bracket  1  according to  FIGS. 3 to 5 , reference is made to the procedure described for  FIGS. 1 and 2 . Deviating from this, in the case of the assignment of the yoke support  3  to the base support  2  the slot nuts  27  and  28  are in each case pushed into a receiving groove  72 ,  72 ′. In this case,—in dependence on the conditions on the roof—two suitable receiving grooves  72  and  72 ′ are chosen at a certain vertical spacing from the base plate  31  such that the yoke support  3  is able to engage around the roof covering.  FIG. 3  shows the solar module bracket  1  in a position in which the slot nuts  27  and  28  are arranged in the two topmost receiving grooves  72  and  72 ′;  FIG. 4  shows the solar module bracket  1  in a position in which the slot nuts  27  and  28  are arranged in the two bottommost receiving grooves  72  and  72 ′. The yoke support  3  is then displaced along the push-in direction (arrow  48 ) up to a desired position. In said position, it is secured by means of the clamping screw  75  by the clamping screw  75 , which has preferably already been screwed in part into the threaded bore  58  of the connecting web  55 , being screwed in further such that the end of the clamping screw  75  is pressed against the cover wall  68  of the support strut  65 . As a result, a force acting in the direction of the longitudinal extension of the clamping screw  75  is exerted onto the arms  15  and  16  such that the slot nuts  27  and  28  are held in a force-fitting manner in the associated receiving grooves  72  and  72 ′ or are wedged in said receiving grooves. 
       FIGS. 6 and 7  show a solar module bracket  1  according to a third exemplary embodiment.  FIG. 6  shows the solar module bracket  1  in the disassembled state and  FIG. 7  in the mounted state. In this case, in each case just the base support  2  and a region of the yoke support  3 , in particular the fastening region  4  thereof, can be seen. The solar module bracket  1  according to  FIGS. 6 and 7  is realized substantially according to  FIGS. 1 and 2  such that reference is made to said figures and the corresponding description and purely the differences will be explained below. 
     Similarly to the case of the second exemplary embodiment, the slot nuts  27  and  28  of the arms  15  and  16  are realized as L-slot nuts  51  and  52  by, in each case, a slot nut web  53 ,  54  projecting in a perpendicular manner away from the associated arm  15 ,  16 . In this case, the slot nut webs  53  and  54  project away in the same direction. 
     The base support  2  comprises a base plate  31 . A longitudinal web  76  which projects away from said base plate in a perpendicular manner is provided on the base plate  31 . A strut  78  projects away parallel to the longitudinal web  76  on a side edge  77  of the base plate  31 . An intermediate plate  79 , which extends in regions parallel to the base plate  31  and in regions in parallel elongation with respect to the base plate  31 , connects to said strut  78 . By means of a strut  80  which extends in a perpendicular manner with respect to the intermediate plate  79 , said intermediate plate  79  connects to a base plate extension  81 , which extends in the plane of the base plate  31  and consequently with the base plate  31  spans the fastening plane  33 . The base plate extension  81  merges by means of a strut  82 , which projects in a perpendicular manner away from said base plate extension, into a web  83  which extends parallel to the base plate extension  81 . The web  83  and the intermediate plate  79  lie in one plane. A receiving groove  85  or  86 , which is realized as a hook-in receiving groove  84 , is defined in each case by the intermediate plate  79 , the strut  80 , the base plate extension  81 , the strut  82  and the web  83  or by the longitudinal web  76 , the base plate  31 , the strut  78  and the intermediate plate  79 . The receiving grooves  85  and  86  comprise in each case a longitudinal opening  87 ,  88  which is realized between the web  83  and the intermediate plate  79  or the intermediate plate  79  and the longitudinal web  76 . The width a of the longitudinal openings  87  and  88  is greater than the width c of the L-slot nuts  51  and  52 . 
     Three threaded bores  89  are provided in the longitudinal web  76  of the base support  2 . The longitudinal axis of the threaded bores  89  extends parallel to the base plate  31 . The distance between adjacent threaded screws is preferably smaller than the yoke width b of the yoke support  3 . In each case a clamping screw  91  is screwed into the threaded bores  89 . In the mounted state of the solar module bracket  1  ( FIG. 6 ) one of the clamping screws  91  is supported by way of its free end on the arm  16 , in particular on the arm portion  22  thereof. The threaded bores  89  and the clamping screws  91  form a clamping safety device  90 . 
     The base support  2  comprises six fastening holes  34 . Three of the fastening holes  34  are realized as elongated holes and are provided in the intermediate plate  79 . The longitudinal axis of the longitudinal holes extends transversely, in particular in a perpendicular manner, with respect to the receiving grooves  85  and  86 . The three further fastening holes  34  are provided in the base plate  31  at a spacing from the receiving groove  86  and are realized as circular holes. 
     When the solar module bracket  1  is mounted, after fastening the base support  2  on the roof the slot nuts  27  and  28  are inserted through the longitudinal openings  87  and  88  into the receiving grooves  85  and  86  along the direction marked by the arrow  92 . The slot nuts  27  and  28  are then displaced in the direction of the arrow  93  in the respective receiving groove  85 ,  86  such that a tongue and groove system is achieved. The yoke support  3  can also be displaced in the direction of the longitudinal extension of the receiving grooves  85  and  86  (arrow  48 ) in order to set a desired position of the yoke support  1  relative to the base support  2  and consequently to the roof. Said position is then secured by means of one of the clamping screws  91  by the clamping screw  91  being screwed further into the threaded bore  89  and as a result being pressed by way of its free end against the arm  16 . 
     The fourth exemplary embodiment according to  FIGS. 8 and 9  corresponds substantially to the exemplary embodiment of  FIGS. 6 and 7  such that in this respect reference is made to the description concerning  FIGS. 6 and 7  and purely the differences to  FIGS. 6 and 7  will be explained below. 
     A U-shaped U-holder  94  which extends over the yoke width b is provided on the arm  16  of the yoke support  3  on the transition region thereof from the arm part  21  into the arm portion  22 . The U-holder comprises two legs  95  and  96  and one base  97  which connects the legs  95  and  96 . The one leg is realized integrally with the arm  16 . An opening (not visible) is provided in the base  97 . 
     A side of the longitudinal web  76  of the base support and a side of the arm portion  22  of the arm  16  located opposite said side form a screw channel  98  for a locating screw  99  of the clamping safety device  90 . The locating screw  99 —in the mounted state of the solar module bracket  1 —passes through the opening of the base  97  and is screwed into the screw channel  98  by way of its thread  100 . The screw channel  98  can be formed by a toothing which is provided on the opposite sides of the arm portion  22  and of the longitudinal web  76 , or as a result of screwing in the locating screw  99  which in the latter case is realized as a self-tapping locating screw. 
     The mounting of the solar module bracket  1  of  FIGS. 8 and 9  is effected substantially according to the mounting of the solar module bracket  1  according to  FIGS. 6 and 7 . The locating screw  99  is preferably initially screwed by way of its thread  100  between the legs  95  and  96  such that it is held in a captive manner on the yoke support  3  and consequently is able to be screwed into the screw channel  98  for securing once the yoke support  3  has been positioned on the base support  2 .