Connecting Device for Mounting a Wooden Construction Element

Abstract

The invention relates to a connecting device (3) for mounting a wooden construction element (1), in particular in the form of a panel or beam, on a support (2a), wherein the connecting device (3) has a mounting node (4), which is designed for mounting the connecting device (3) on the support (2a), and a coupling arrangement (5), which is connected to the mounting node (4) and which, in the installed state, while projecting from the mounting node (4) on an upper side (1a) of the wooden construction element (1) can be connected to the latter by fastening members (7), which at least partially pass through the wooden construction element (1), wherein the mounting node (4) and the coupling arrangement (5) are each produced from a material which has a higher strength than that of the wooden construction element (1). The invention further relates to a wooden construction arrangement having a connecting device (3) according to the invention and to a structure having such a wooden construction arrangement.

Claims

1. A connecting device (3) for mounting a wooden construction element (1), in particular in the form of a panel or beam, on a support (2a), the connecting device (3) comprising a mounting node (4), which is designed for mounting the connecting device (3) on the support (2a) and a coupling arrangement (5), which is connected to the mounting node (4) and which, in the installed state, while projecting from the mounting node (4) on an upper side (1a) of the wooden construction element (1), can be connected to the latter using fastening members (7), which at least partially pass through the wooden construction element (1), wherein the mounting node (4) and the coupling arrangement (5) are each produced from a material which has a higher strength than that of the wooden construction element (1).

2. The connecting device (3) according to claim 1, wherein the coupling arrangement (5) has at least one coupling finger (8), which is adjustably connected to the mounting node (4), in particular in pivotal fashion via a joint, and is adjustable between a space-saving rest position and a work position.

3. The connecting device (3) according to claim 1 or 2, wherein the coupling arrangement (5) is designed in such a way that it can be connected to the wooden construction element (1) in each case along a fastening member axis (7c) by means of screw-shaped, pin-shaped or nail-shaped fastening members (7), in particular a self-drilling wood screw, the coupling arrangement (5) has fastening member bores (9), which determine the position and direction of the fastening member axes (7c), wherein these fastening member bores (9) are designed in such a way that, in the installed state, the fastening member axis (7c) encloses together with a normal vector n extending from the underside (5a) of the coupling arrangement (5) one angle of inclination each, which is 0 to 80, 30 to 60 or about 45, and a direction vector s of the projection of the fastening member axis (7c) on a coupling plane (6) defined by the underside (5a) of the coupling arrangement (5) encloses together with a radial vector r lying in the coupling plane (6) a horizontal angle , wherein the radial vector r runs from a center O of the mounting node (4) that is disposed in the coupling plane (6) to a point of intersection P, in which the fastening member axis (7c) intersects the coupling plane (6), and wherein the horizontal angle is 0 to 180 or 45 to 135 or 45 to 135.

4. The connecting device (3) according to any of the preceding claims, wherein the connecting device (3) has at least one fastening member block (11), which, in the installed state, is arranged on an upper side (5b) of the coupling arrangement (5), and has one or more fastening member bores (9), which determine the position and direction of the fastening member axes (7c).

5. The connecting device (3) according to any of the preceding claims, wherein the mounting; node (4) comprises a coupling node (4a), to which the coupling arrangement (5) is connected in the installed state, a lower support body (4b), which, in the installed state, projects downwards and which, in the installed state, is connected to the coupling node (4a) and passes through the wooden construction element (1), a lower mounting body (4c), which, in the installed state, is connected to the lower mounting body (4b) and is designed for mounting or the assembly on the support (2a).

6. The connecting device (3) according to claim 5, wherein the mounting node (4) additionally comprises an upper support body (4d), which, in the installed state, projects upwards and which, in the installed state, is connected to the coupling node (4a), and an upper mounting body (4e), which, in the installed state, is connected to the upper support body (4d) and is designed for mounting a further support (2b).

7. The connecting device (3) according to claim 5 or 6, wherein the coupling node (4a), the lower support body (4b) and the lower mounting body (4c) are designed in such a way that the distance between the coupling node (4a) and the lower mounting body (4c) can be adjusted and/or the coupling node (4a), the upper support body (4d) and the upper mounting body (4e) are designed in such a way that the distance between the coupling node (4a) and the upper support body (4e) can be adjusted.

8. The connecting device (3) according to any of the preceding claims, wherein a plurality of the components and/or members of the connecting device (3), which, in the installed state, are connected to one another, are all detachably connected to one another, in particular via screw, clamp, bolt, splint or bayonet connections.

9. The connecting device (3) according to any of the preceding claims, wherein the connecting device (3) has a structure-borne sound insulating unit (20a20e), which is designed in such a way that, in the installed state, the structure-borne sound insulating transmission is insulated or attenuated from the wooden construction element (1) via the connecting device (3) to the lower support (2a) and/or to the upper support (2b).

10. The connecting device (3) according to any of the preceding claims, wherein the connecting-device (3) is designed in such a way that, in the installed state, at least part of the flow of forces is passed via at least one insulating element (20a20e) in each case, which is designed for insulating or attenuating the structure-borne sound transmission.

11. The connecting device (3) according to any of the preceding claims, wherein, in the installed

state, the connecting device (3) comprises at least one of the following insulating elements (20a20e) an insulating element (20a), which is arranged between the upper side (1a) of the wooden construction element (1) and the underside (5a) of the coupling arrangement (5) and/or an insulating element (20b), which is arranged between the upper side (5b) of the coupling arrangement (5) and an underside (11a) of the fastening member block (11) and/or an insulating element (20c), which is arranged between the underside (1b) of the wooden construction element (1) and the lower mounting body (4c) and/or an insulating element (20d), which is arranged between the mounting node (4) and the lower support (2a) or between the lower support body (4c) and the lower support (2a) and/or an insulating element (20e), which is arranged between the mounting node (4) and the upper support (2b) or between the upper support body (4e) and the upper support (2b).

12. A wooden construction arrangement having a connecting device (3) according to any of the preceding claims, comprising a support (2a) and a wooden construction element (1), which is made in particular from cross laminated timber, wherein the connecting device (3) is mounted on the support (2a) and the wooden construction element (1) is attached to the connecting device (3) in suspended fashion or the connecting device (3) is connected to the wooden construction element (1) on the upper side (1a) thereof.

13. A structure comprising a wooden construction arrangement according to claim 12.

Description

BRIEF DESCRIPTION OF THE DRAWING

[0081] Embodiments of the invention are now described by way of example and with reference to the drawings, wherein:

[0082] FIG. 1 shows a schematic illustration of a sectional side view of a connecting device according to the invention which is mounted on the support and is connected to the wooden construction element,

[0083] FIG. 2 shows an oblique view of a connecting device according to the invention with circular coupling arrangement,

[0084] FIG. 3 shows a sectional side view of a connecting device according to the invention, the coupling arrangement of winch has pivotable coupling fingers,

[0085] FIG. 4 shows a schematically outlined top view of a further embodiment of a connecting device according to the invention with pivotable coupling fingers,

[0086] FIG. 5a shows a schematically illustrated oblique view of a section of the connecting device according to the invention, in which the coupling arrangement is designed in such a way that it can be connected to the wooden construction element by means of screw-shaped, pin-shaped or nail-shaped fastening member and in which, in the installed state, the fastening member axis is guided by an angle of inclination and the horizontal angle ,

[0087] FIG. 5b shows a top view of the points, vectors and angles shown in FIG. 5a for the illustrating explanation of the horizontal angle ,

[0088] FIG. 6 shows a schematically outlined top view of a connecting device according to the invention, in which the coupling arrangement is formed of six radially arranged coupling fingers with fastening member blocks,

[0089] FIG. 7 shows an oblique view of a connecting device according to the invention with coupling fingers as in FIG. 6, wherein the mounting node here has a coupling node, a lower support body and a lower mounting body as well as an upper support body and an upper mounting body.

[0090] FIG. 8 shows a sectional side view of the connecting device according to FIG. 7 in the installed state,

[0091] FIG. 9 shows a schematically illustrated top view of various use examples or associated embodiments of the connecting device according to the invention for mounting wooden construction elements in the form of panels,

[0092] FIG. 10 shows a schematically outlined top view of various examples of use or associated embodiments of the connecting device according to the invention for mounting wooden construction elements in the form of beams,

[0093] FIG. 11 shows an oblique view of a connecting device according to the invention that is similar to that in FIG. 8, which is designed for mounting a wooden construction element in the form of a panel on a corner or designed for mounting three wooden construction elements in the form of beams, in pairs enclosing an angle of 45,

[0094] FIG. 12 shows an oblique view of a connecting device according to the invention, which is designed for mounting two wooden construction elements in the form of beams, which abut in flush fashion,

[0095] FIG. 13a shows a sectional side view of a connecting device according to the invention in the installed state with a plurality of insulating elements, and

[0096] FIG. 13b shows an enlarged detailed view of FIG. 13a within the range of a fastening member block.

DESCRIPTION OF EMBODIMENTS

[0097] FIG. 1 shows in a schematic outline a sectional side view of a connecting device 3 according to the invention in an installed state, i.e. mounted on the support 2a and connected to the wooden construction element 1. The mounting node 4 is mounted on the upper end face of the support 2a and attached to the head of the support 2a by means of screw 32. (Of course, other possibilities of fastening the mounting node 4 to the head of the support 2a are also conceivable and provided.)

[0098] The coupling arrangement 5 is connected to the mounting node 4 and, in the installed state, projects from the mounting node 4 and comes to lie via its underside on the upper side 1a of the wooden construction element 1 as well as is designed in such a way that it can be connected to the wooden construction element by fastening members 7. Here, basically all known connecting and/or fastening members suitable for connecting wooden construction elements to e.g. metal members come into consideration, such as screw-shaped, pin-shaped, strip-shaped or nail-shaped fastening members, which can be screwed, hammered and/or also (additionally) adhered into the wooden construction element. Brackets or additional fittings can also be provided. They are separately connected to the wooden construction element and are connected to the coupling element according to the invention e.g. via a suitable positive engagement. Full adhesion is also conceivable and provided according to the invention.

[0099] In the embodiment shown as a schematic outline in FIG. 1, in particular self-drilling wood screws are provided as fastening members 7, which are screwed through the fastening member bores 9 into the wooden construction element 1.

[0100] FIG. 1 shows that, in the installed state, the wooden construction element 1 is mounted on the coupling apparatus 5 in suspended fashion. The support force acting upwards is introduced via the mounting node 4 made of a resilient material. The flow of forces introduced into the mounting node 4 at the comparatively small mounting area is distributed via the fastening members 7 (here: wood screws) arranged in a larger area over a comparatively large volume of the wooden construction element.

[0101] FIG. 1 also shows that no further components come to lie on the underside of the wooden construction element. The components on the upper side 1a are covered e.g. in the case of ceiling constructions by the floor structure of the story thereabove.

[0102] FIG. 2 shows an oblique view of a connecting device 3 according to the invention, wherein here the coupling arrangement 5 is designed as a circular disk to be produced in an easy and cost-effective way. Of course, other, more complex designs of the coupling arrangement 5right up to any conceivable free formare also provided according to the invention.

[0103] However, the coupling arrangement 5 shall, in the installed state, (at least with partial areas on the underside thereof) abut on the upper side 1a of the wooden construction element 1 and be connectable to the wooden construction element 1 by fastening members 7. In the embodiment illustrated in FIG. 2, the coupling arrangement 5 also has fastening member bores 9, such that it can be connected by means of screw-shaped, pin-shaped or nail-shaped fastening members 7, such as wood screws, to the wooden construction element 1 (not shown in FIG. 2). In the embodiment shown in FIG. 2, the mounting node 4 is designed in such a way that, in the installed state, it is not the support (not shown herein) that passes through the wooden construction element 1 but the mounting node 4, which can be designed in a particularly resilient way.

[0104] FIG. 3 shows a sectional side view of a connecting device 3 according to the invention, in which coupling arrangement 5 has (elongate) coupling fingers 8, which are pivotally connected to the mounting node 4 via a respective joint and can be pivoted between a space-saving packaging or transport position (rest position) and the installation position (i.e. the work position in the installed state), which is advantageous for both packaging, storage as well as transport and the on-site handling and assembly at the building site. In the installed position, the coupling fingers 8 run parallel to the coupling plane 6. In the packaging or transport position, the coupling fingers 8 run parallel to the vertical axis 4f of the mounting node 4, and the coupling fingers 8 can thus be folded into a space-saving bundle.

[0105] FIG. 4 shows a further embodiment of a connecting device 3 according to the invention with pivotable coupling fingers 8. In contrast to FIG. 3, the coupling fingers 8 in FIG. 4 run parallel to the coupling plane in both the installed position and the packaging or transport position. However, here too, the coupling fingers 8 can be pivoted in such a way that, in the packaging or transport position, they are placed parallel to one another as a space-saving bundle (dashed illustration).

[0106] FIG. 5a shows an oblique view of a section of a connecting device 3 according to the invention. The coupling arrangement 5 is designed as a coupling finger 8. The coupling arrangement 5 or the coupling finger 8 is designed in such a way that it can be connected to the wooden construction element 1 by means of screw-shaped, pin-shaped or nail-shaped fastening members 7 and has a fastening member bore 9, which defines the position, the angle of inclination and the horizontal angle of the fastening member axis 7c.

[0107] The direction vector s of the fastening member axis 7c and the normal vector n enclose the angle of inclination towards the underside of the coupling arrangement 5.

[0108] The radial vector r runs from the center O of the mounting node 4 that is situated in the coupling plane 6 to the point of intersection P, in which the fastening member axis 7c intersects the coupling plane 6 (i.e. r=PO, wherein P and O are the position vectors of said points). The vector s is the projection of the direction vector s of the fastening member axis 7c on the coupling plane 6, and, together with the radial vector r, encloses the horizontal angle , which can assume any value between 0 and 360. Ifas is common practice is associated clockwise with positive values and counterclockwise with negative values, the horizontal angle can assume any value between 0 and 180.

[0109] FIG. 5b shows byway of diagram the projection of the points, vectors and angles on the coupling plane 6, as illustrated in FIG. 5a. The consideration of FIG. 5a and FIG. 5b in combination shows that the horizontal angle can assume any values between 0 and 360 or between 0 and 180. As explained below, the horizontal angles can, however, assume values in the quadrant between 45and +45 or in the quadrant between +135 and 135in particular in embodiments in which the coupling arrangement 5 is designed in the form of elongate coupling fingers 8.

[0110] FIG. 6 shows a top view of a connecting device 3 according to the invention, in which the coupling arrangement 5 consists of six radially arranged coupling fingers 8, each having fastening member blocks 11. In the installed state, the fastening members 7 pass through the fastening member blocks 11, which are designed in such a way that they basically (i.e. on the basis of typical tolerances) define the position of the fastening member axes 7c and/or the respective angle of inclination and the respective horizontal angle . In this FIG. 6, the fastening members 7 (or the fastening member axes 7c) are shown as lines in simplified symbolized fashion.

[0111] The illustrated arrangement, in which the fastening members 7 do not extend below the (comparatively narrow) coupling fingers 8 but are respectively twisted in relation to the longitudinal axes 8a of the coupling fingers about a horizontal angle (i.e. unequal 0 and unequal 180, effect a more widely distributed load introduction via the fastening members 7 into the wooden construction element 1 and into a volume range which is markedly larger than the one directly below the coupling fingers 8.

[0112] FIG. 7 shows an oblique view of a connecting device 3 according to the invention with coupling fingers 8 as in FIG. 6. In the embodiment shown in FIG. 7, the mounting node 4 includes the following: [0113] a coupling node 4a, to which the coupling arrangement 5 (or here: coupling finger 8) is connected, [0114] a lower support body 4b projecting downwards in the installed state, which, in the installed state, is connected to the coupling node 4a, [0115] a lower support body 4c, which, in the installed state, is connected to the lower support body 4b and is designed for the mounting or the assembly on the (lower) support 2a, [0116] an upper support body 4d projecting upwards in the installed state, which, in the installed state, is connected to the coupling node 4a, [0117] an upper mounting body 4c, which, in the installed state, is connected to the upper support body 4d and is designed for the mounting or the assembly on the upper support 2a.

[0118] In the embodiment shown in FIG. 7, the lower mounting body 4c and the upper mounting body 4e are furthermore designed in such a way thatbased on the respective mounting areathey can be connected to the respective support 2a, 2b by means of obliquely guided screws 32.

[0119] FIG. 7 also shows that the obliquely guided fastening members 7 (here: wood screws) are come to lie outside the volumes which are disposed below thecomparatively narrowcoupling fingers, which improves the load introduction into the wooden construction element 1 (not shown herein).

[0120] FIG. 8 is a sectional side view of a connecting device 3 similar to that in FIG. 7 in the installed state. The mounting node 4 and/or, in this case, its component, mounting body 4c, is mounted on the lower support 2a and attached to the head of the lower support 2a by means of screws 32.

[0121] The lower support body 4b is detachably connected to the mounting body 4c via a screw connection. The lower support body passes through the wooden construction element 1 and is detachably connected to the coupling node 4a via a screw connection. The coupling node 4a is detachably connected to the lower support body 4b via a screw connection and protrudes upwards to the upper mounting body 4e, which is detachably connected to the upper support body via a screw connection.

[0122] The upper support 2b is mounted on the upper mounting body 4e and attached by means of screws 32. The coupling fingers 8 are connected to the coupling node 4a and come to lie on the upper side of the wooden construction element 1 and are themselves connected to the wooden construction element 1 by the fastening members 7 (here: self-drilling wood screws). The angle shown in FIG. 8 is the projection of the angle of inclination of the fastening member axis on the image and/or sectional plane of the figure.

[0123] It is also possible for the lower mounting body 4c and/or the upper mounting body 4e to be designed in such a way that they do not require any fixation on the respective support 2a, 2b by the screws 32 or by other fastening members. This can be achieved e.g. by designing the mounting bodies 4c, 4e in such a way that they are laterally fixed to the support axis by a lateral positive engagement with the respective support 2a, 2b, e.g. via a collar enclosing the support head or by spikes penetrating the head. A vertical fixation is often unnecessary due to the weight force occurring in structures.

[0124] In the embodiment shown in FIG. 8, the lower mounting body 4c is designed in such a way that it does not only serve to be mounted on the lower support 2a or a foundation but, in turn, also serves as a mounting for the wooden construction element 1. In a combined consideration with the above described fact that components 4a-4e o the mounting node 4 are detachably connectable to one anotherthis is particularly advantageous as regards the assembly: First, the lower mounting body 4c and the lower support body 4b are attached to the head of the support 2a. Then, the wooden construction element 1 can be mounted provisionally on the lower support body 4c and is already in the installation position without the aid of e.g. auxiliary supports or frameworks. Thereafter, the coupling node 4a is attached from above with the coupling arrangement 5 to the lower support body 4b and the coupling arrangement 5 is subsequently connected to the wooden construction element 1. This assembly possibility from above and without e.g. auxiliary supports is considerably more convenient and safer especially in ceiling constructions than any assembly from below.

[0125] FIG. 9 shows in a schematically outlined top view various examples of use or associated embodiments of the connecting device 3 according to the invention for mounting wooden construction elements in the form of panelshereinafter referred to as panels: [0126] Arrow 41 points to a mounting according to the invention in the panel center of panel 1. [0127] Arrow 42 points to a mounting according to the invention at the corner of panel 1.2. [0128] Arrow 43 points to a mounting according to the invention at an edge of panel 1.3. [0129] Arrow 44 points to a mounting according to the invention at the T-joint of panels 1.3 and 1.4, situated at the edge. [0130] Arrow 45 points to a mounting according to the invention at the longitudinal joint of panels 1.2 and 1.3.

[0131] Arrow 46 points to a mounting according to the invention at the corner of the four panels 1, 1.2, 1.3 and 1.4.

[0132] It is clear from this illustration that not only one panel but a plurality of panels can be mounted by the connecting device according to the invention and that in the case of designs having a lower support body 4b this support body 4b does not necessarily pass through the wooden construction element 1 but can also come to lie on an edge (plus corner) of the wooden construction element 1.

[0133] FIG. 10 shows in a schematically outlined top view various examples of use or associated embodiments of the connecting device 3 according to the invention for mounting wooden construction elements in the form of beamshereinafter referred to as beam. [0134] Arrow 47 points to a mounting according to the invention at the left-hand end of beam 1. [0135] Arrow 48 points to a mounting according to the invention approximately in the center of beam 1. [0136] Arrow 49 points to a mounting according to the invention at the joint of beam 1 and beam 1.2.

[0137] FIG. 11 show's an oblique view of a connecting device 3 according to the invention, designed in a way similar to that in FIG. 7 for mounting a wooden construction element in the form of a panel at a corner or designed for mounting three wooden construction elements in the form of beams, which in pairs enclose an angle of 45 each.

[0138] FIG. 12 shows an oblique view of a connecting device 3 according to the invention, which is designed for mounting two wooden construction elements which abut in flush fashion.

[0139] FIG. 13a shows a sectional side view of a connecting device according to the invention in the installed state, which has insulating elements 20a-20e.

[0140] FIG. 13b shows an enlarged detailed view of FIG. 13a in the vicinity of a fastening member block 11.

[0141] FIGS. 13a and 13b show that the coupling arrangement 5 comes to lie between the fastening member blocks 11 and the wooden construction element 1 so as to be quasi mounted in floating fashion via the insulating elements 20b and 20c. The coupling arrangement 5 is not connected to the wooden construction element 1 in a rigid or inflexible way but in an elastically damped way and is thus sound-absorbing.

[0142] In the present application and the claims, the terms connect, connected, connection do not only refer to rigid or inflexible connections but also to damped and elastic connections or between the respective members/components. The same also applies, mutatis mutandis, to the terms attach, assembly, mount, mounting, fasten and fastening.

[0143] A consideration of the present explanations and the entire drawings in combination also discloses: [0144] The formation of the components of the invention is not limited to the simple forms shown in the drawings [0145] In particular the coupling arrangement 5 or the coupling fingers 8 can be formed in many ways and can be optimized in many ways in particular with respect to their load-bearing capacity and/or with respect to the relationship between use of material and load-bearing capacity. [0146] The invention can be implemented in such a way that it can be disassembled into all its individual components. [0147] The fastening member blocks 11 do not necessarily have to be connected a priori to the coupling arrangement 5 or to the coupling fingers 8 but can be designed as separate members which come to lie according to the invention in the assembled state for the first time. [0148] Likewise, the insulating elements 20a-20e do not have to be connected a priori to other components but can be designed as separate members which come to lie according to the invention in the installed state for the first time.

[0149] For reasons of ease of presentation, the upper side 1a of the wooden construction element 1 has been assumed to be a continuously flat surface in all explanations and drawings. Of course, it is e.g. also possible to provide the wooden construction element with recesses which allow a recessed installation of the coupling arrangement 5.

[0150] Furthermore, it is also provided to design the connecting arrangement in such a way that a cambered installation as referred to among experts becomes possible: In this case, the coupling arrangement 5 is designed in such a way that prior to the assembly of the fastening members 7 the underside 5a thereof does not yet abut on the wooden construction element 1 but is forced to do so by the attached fastening members 7 for the first time. It is thus possible to introduce tensions into the wooden construction element 1, which counteract e.g. the weight-related sag between two mountings.

LIST OF REFERENCE SIGNS

[0151] 1 wooden construction element [0152] 1a upper side 1a of the wooden construction element 1 [0153] 1b underside 1b of the wooden construction element 1 [0154] 1.2 second wooden construction element [0155] 1.3 third wooden construction element [0156] 1.4 fourth wooden construction element [0157] 2a (lower) support [0158] 2b additional, upper support [0159] 3 connecting device [0160] 4 mounting node [0161] 4a coupling node [0162] 4b lower support body [0163] 4c lower mounting body [0164] 4d upper support body [0165] 4e upper mounting body [0166] 4f vertical axis of the mounting node 4 [0167] 5 coupling arrangement [0168] 5a underside 5a of the coupling arrangement 5 [0169] 5b upper side 5b of the coupling arrangement 5 [0170] 6 coupling plane (defined by the underside 5a of the coupling arrangement 5 or, in the installed state, by the upper side 1a of the wooden construction element 1) [0171] 7 fastening member [0172] 7a coupling segment of the fastening member 7 [0173] 7b fastening member head [0174] 7c fastening member axis [0175] 8 coupling finger [0176] 8a longitudinal axis 8a of the coupling finger 8 [0177] 9 fastening member bore (for the fastening member 7) [0178] 10 head support (for the head of the fastening member 7) [0179] 11 fastening member block [0180] 11a underside 11a of the fastening member block 11 [0181] 11b upper side 11b of the fastening member block 11 [0182] 20a-e insulating element [0183] 32 screw (for attaching the mounting body 4c, 4e to the supports 2a, 2b) [0184] 41-46 embodiment and example of use for mounting wooden construction elements 1 in the form of panels [0185] 47-49 embodiment and example of use for mounting wooden construction elements 1 in the form of beams [0186] angle of inclination of the fastening member axis 7c [0187] projection of the angle of inclination on the image plane of the respective drawing [0188] horizontal angle of the fastening member axis 7c [0189] n normal vector n on the underside 5a of the coupling arrangement 5 [0190] O center O of the mounting node 4 that is disposed in the coupling plane 6 (position vector) [0191] P point of intersection between the fastening member axis 7c and the coupling plane 6 (position vector) [0192] r radial vector r, runs from O to P (i.e. r=PO) [0193] s direction vector s of the fastening member axis 7c [0194] s direction vector s of the projection of the fastening member axis 7c on the coupling plane 6