Components for vehicles

Abstract

A component for a vehicle comprises a crossbeam, a retaining device, and a plate-type instrument. The crossbeam is configured to be connected to two columns that are opposite each other relative to the x-z plane of the vehicle. The retaining device is connected to the crossbeam and comprises two brackets spaced apart from each other in the y-direction. The two brackets are designed as supporting structure brackets, each having an upper chord and a lower chord. The two chords each have two side walls that adjoin each other at an angle, one side wall being in the y-z plane and the other side wall being in the x-y plane. The two chords are arranged obliquely relative to each other so that the two chords are at a greater distance from each other on the instrument connection side than at their ends facing the crossbeam. At least one of the two chords has at least one nominal bending point between its two connection points, provided by the geometry of the chord, which chord bends in the z-direction and / or the y-direction at the nominal bending point under load in the x-direction.

Description

Technical Field

[0001] The present invention relates to a component for a vehicle, comprising a crossbeam, a holding device and a plate-type instrument, in particular a display, wherein the crossbeam is arranged to be connected to two pillars opposite to each other relative to the xz plane of the vehicle, the holding device is connected to the crossbeam and protrudes radially from the crossbeam and comprises two brackets spaced apart from each other in the y direction, the holding device has a connecting piece on the end side, the plate-type instrument is connected to the connecting piece of the holding device at a position spaced apart from the upper terminal of the plate-type instrument, and the plate-type instrument is held so that the operating surface of the plate-type instrument points toward the passenger compartment of the vehicle in the x direction. Background Art

[0002] Ever-larger display and operating units, or monitors, are being installed in motor vehicles. These units are panel-type instruments. In many cases, they are located approximately centrally in the instrument panel area as central displays. These monitors face the vehicle's passenger compartment with their display or operating surfaces, allowing the driver and front passenger to read the information displayed. In most cases, these monitors also serve as input units. In these cases, the monitors are touch-sensitive. Due to their size, the often limited available space, and also for reasons of comfort and ergonomics, these monitors cannot always be integrated into the instrument panel, but instead protrude from the upper end of the instrument panel. Designs are also known in which these monitors, which protrude beyond the instrument panel, can be lowered when in use.

[0003] This type of panel-type instrument, especially when it protrudes completely or partially from the upper end of the instrument panel, must be secured so that it does not increase the risk of injury to vehicle occupants in the event of an accident. To this end, EP 3 045 340 B1 recommends placing this type of display on a support element extending relative to the back of the display. This support element is designed to be angled. The display is connected to arms extending in the height direction (yz direction). On the outer side relative to this angled shape, the two arms are connected by a metal connecting plate made of a metal leaf spring material. The support element is designed so that when the load acting on the upper area of ​​the display exceeds a certain force, the support element breaks and the display folds in the direction of travel. For panel-type instruments that protrude from the surface of the instrument panel in at least one section, it is also necessary to ensure that the retaining device can withstand the loads that would be applied to the instrument panel if a person, for example, grasps the upper side of the display as a handle to help lift it, and pulls themselves upward. This load situation, also known as misuse, must not result in damage or destruction of the retaining device.

[0004] Document DE 10 2016 004 156 A1 discloses a mounting device for a display device in a vehicle interior. In this mounting device, the display device is located in front of the steering wheel. If the steering column is adjusted upward due to an accident, the display device becomes unfastened from its mounting device. Due to this steering column movement, the display device becomes unfastened from the mounting device and, since it is no longer connected to the support, no longer presents an injury risk.

[0005] JP 2008-290508 A discloses another mounting device for a display in a motor vehicle. This mounting device comprises two separate, spaced-apart brackets connected at one end to an instrument panel cross member. The mounting device protrudes upward from the instrument panel cross member in the z-direction. This is considered necessary to provide sufficient energy absorption within the available installation space. In addition to an arm extending in the z-direction and connected at one end to the cross member, this bracket also includes a V-shaped bracket element formed at an angle, resulting in this section of the bracket having an N-shaped design in side view. An audio unit integrated into the instrument panel is connected to shorter, parallel bracket arms, which also extend in the z-direction. Due to this bracket design, when forces act on the audio unit in the x-direction, the distance between the two arms extending in the z-direction decreases. The associated deformation work absorbs the energy. To maintain the vertical orientation of the connected audio unit even under deformation, a nominal bending strength is introduced by weakening the material between the connection of the bracket arm carrying the audio unit and the inclined connecting plate. The bracket is used to hold an audio system that does not protrude above the upper side of the dashboard. Therefore, the bracket does not have to meet the requirements set forth for displays that protrude beyond the dashboard surface.

[0006] JP 2013-82362 A also discloses a multi-part holding device consisting of three brackets arranged side by side on the display and three brackets that can be coupled thereto and are arranged on a cross member of the instrument panel.

[0007] According to legal requirements for mounting devices for tablet-type devices such as displays, these devices must be designed to be sufficiently flexible so as not to exceed the maximum permissible acceleration acting on the occupant's head. Furthermore, these devices must also withstand abuse without plastic deformation or damage. An abuse force of approximately 300 N is assumed, with the forces in the x-direction (both directions) and the z-direction (directed downward) being particularly relevant. Summary of the Invention

[0008] Against the background of the above-mentioned prior art, the technical problem to be solved by the present invention is to improve the aforementioned type of component for a vehicle in such a way that the component not only meets the requirements of occupant safety, but is also suitable for carrying plate-type instruments, such as displays, which are arranged to extend beyond the upper side of the dashboard by at least one section, and therefore also meets the requirements of misuse and can be installed even if the installation situation is restricted.

[0009] According to the invention, this object is achieved by an assembly of the aforementioned type, wherein the two supports are designed as supporting structure supports, each having an upper chord and a lower chord, the two chords each having two side walls adjoining each other at an angle, one side wall being in the yz plane and the other side wall being in the xy plane, and the two chords being arranged obliquely relative to each other, so that the two chords are at a greater distance from each other on the instrument connection side than at their ends facing the crossbeam, and at least one of the two chords has, between its two connection points, at least one desired bending point provided by the geometry of the chord, at which the chord bends in the z and / or y direction under a load (in the x direction).

[0010] The directional orientation and plane orientation (x, y, z) used within the scope of this embodiment are the directional orientation or plane orientation commonly used in vehicles. Therefore, the x-direction corresponds to the longitudinal extension of the vehicle, the y-direction corresponds to the lateral direction relative to the x-direction, and the z-direction corresponds to the height direction. For the planes related to the spatial positions of the arms of the two wing panels (yz plane and xz plane), they should not be strictly understood from a geometric point of view. Instead, as long as the projection of the actual spatial position (IST-Raumlage) onto a strict geometric plane maps most of the actual spatial position, the spatial position can deviate from the strict geometric plane. The deviation preferably does not exceed ± 40 °. This also applies to the directional data.

[0011] The two brackets of the assembly are designed as support structure brackets. Therefore, each bracket has an upper chord and a lower chord. Each chord consists of two side walls that adjoin each other at an angle, typically at a right angle or at least approximately at a right angle. One of the two side walls of the chord lies in the yz plane, and the other side wall lies in the xy plane.

[0012] According to one design, the side walls of the two chords, located in the yz plane, are designed to point toward each other. The two chords of this bracket are arranged at an angle relative to one another, with the chords being spaced farther apart on the instrument connection side than at their ends facing the crossbar. Consequently, the bracket's connection side to the panel-type instrument, typically a display, has a greater extension in the z-direction than the bracket's end for connection to the instrument panel crossbar. To ensure that the display is adjusted by bending at a defined point in the event of an acceleration acting on the display exceeding a certain level, the at least one chord that bends in this case has a nominal bending point. This nominal bending point is designed so that when an accident-induced load (load direction in the x-direction) acts on the upper end of the display, the chord bends in the z-direction and / or the y-direction. The bending direction of the chord thus extends transversely to the acceleration acting on the chord in the event of an accident.

[0013] In the described retaining device, the forces acting on each bracket are coupled to two spaced-apart chords that protrude from the crossbeam in the x-direction. The crossbeam thus forms a stable component, resisting accelerations acting on the display that must be absorbed by bending, thereby achieving the desired display adjustment. The upper end of the panel-type instrument is spaced apart from the upper chord of the bracket in the z-direction. If the display's height might protrude from the upper side of the instrument panel, the bracket is connected to the lower area of ​​the display. Because the chords converge toward the crossbeam, accelerations acting on the display cause bending loads in the upper chords. Consequently, when a corresponding force is applied, typically caused by a head impact from a vehicle occupant in an accident, the upper chords bend at a predetermined nominal bending point. Therefore, in a preferred embodiment, at least the upper chord of each bracket has such a nominal bending point. When forces are applied to the display in this manner, the connection between the display and the lower chord functions like a hinge due to the tensile forces coupled into the lower chord. The nominal bending point is provided by the geometry of the chords in the area of ​​the nominal bending point. If the upper chord is to bend in the z-direction, that is, about a bending axis extending in the y-direction, this can be controlled by the height of the chord in the z-direction and, therefore, by the design of its sidewalls in the yz plane. The bending direction is also predetermined by the geometry. The bending of the upper chord should occur upward in the z-direction. To this end, the upper chord has a concave shape in the area of ​​the desired bending point, with the height of the sidewalls in the yz plane being minimum in the area of ​​the apex of the shape. Advantageously, this geometry for providing the desired bending point is designed to react to appropriate accelerations or forces acting thereon, but not to misuse, such as when an occupant grasps the upper edge of the display to straighten themselves, which can act particularly as tensile forces but also as compressive forces. Due to the unique geometry of the bracket, if accelerations act on the panel-type instrument in the event of an accident, the bracket reacts by absorbing the energy accordingly, thereby achieving deceleration and thus preventing serious injuries.

[0014] To ensure flexibility even when accelerations or forces act on the panel-type instrument in the event of an accident, coupled to the two chords, the chords are provided with a setpoint bending point, at which the chord section closer to the display, relative to the setpoint bending point, bends or curves in the y-direction relative to the chord section located on the other side of the setpoint bending point. This is achieved by a flexure in the two chords. As a result, the two chord sections separated by the flexure are offset relative to each other in the y-direction when their longitudinal extensions are aligned, and the chord sections offset by the flexure do not overlap in the y-direction when aligned. Under loads acting on this bracket in the x-direction toward the crossbeam, the flexure acts as a hinge. The axis of the flexure typically extends in the z-direction. In this design, the chord section carrying the connecting element can be tilted opposite the deflection direction of the flexure, thereby providing a specific setting for activating the setpoint bending point. Depending on the bracket design, an inclination angle of between 7 and 11 degrees is sufficient. The corresponding other chord section does not necessarily have to have such a setting. The deflection is preferably located outside the center of the longitudinal extension of the chord, specifically offset toward the connection between the support and the crossbeam. In this case, the chord section of the support plate-type device is longer and acts with a correspondingly greater leverage on the desired deflection. The response of the desired deflection can thus also be influenced by the length of this chord section.

[0015] The two chords converge before being connected to the crossbeam. This design of the bracket is advantageous in that the side walls lying in the xz plane converge, and the two other side walls of the two chords are thus connected to each other via a common connecting plate. The section adjacent to the bracket's connection to the crossbeam has a higher bending stiffness than the section where the two chords are spaced apart. This way, the bending support is displaced from the crossbeam toward the desired bending position.

[0016] Designing the chord with side walls adjoining each other at an angle and with a recess between the two chords allows for individual adaptation to different requirements, as the stiffness or bending properties can be influenced simply by varying the side wall height or width. Other measures for influencing the bending properties, such as different material thicknesses, the formation of different metal structures, etc., are also possible.

[0017] It should also be emphasized that the holding device only needs to be connected to the instrument panel cross member. This is also the case in the preferred embodiment. Therefore, the holding device is suitable for forming an assembly of the above-mentioned type, in which case only a relatively small installation space can be used.

[0018] Typically, the ends of the two chords on the connecting element side are also connected to one another via a connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will now be described with reference to the accompanying drawings, in which:

[0020] Figure 1 A perspective view showing an assembly for a vehicle, the assembly comprising a crossbar and a display connected to the crossbar by a retaining device;

[0021] Figure 2 The holding device is shown in Figure 1 Side view of the bracket on the left side of the center;

[0022] Figure 3 Show Figure 2 A top view of the bracket;

[0023] Figure 4 a perspective view showing the bracket of the preceding figures; and

[0024] Figure 5 The brackets of the aforementioned figures are shown in perspective views from different directions. DETAILED DESCRIPTION

[0025] An assembly 1 for a vehicle comprises an instrument panel cross member 2, Figure 1 Only a part of the instrument panel crossbeam is shown in the figure. For simplicity, the crossbeam 2 is designed as a tube in the figure. The crossbeam can also have other cross-sectional geometries and can also consist of two shells, for example, in order to build the cavity profile required for such a crossbeam. In addition to the crossbeam 2, the component 1 also includes a holding device 3. The holding device has two brackets 4, 4.1. The two brackets 4, 4.1 are mirror-symmetrical with respect to the yz plane. The brackets 4, 4.1 are connected to the crossbeam 2 at one end, more precisely by welding. The welded connection follows the contour of the brackets 4, 4.1 on the outside. The crossbeam 2 and the brackets 4, 4.1 are both steel parts. The brackets 4, 4.1 are arranged at intervals from each other in the y direction. At the end of the bracket opposite the crossbeam 2, the brackets 4, 4.1 of the holding device 3 are connected to the back of the display 5 of the exemplary panel instrument. As shown in Figure 1 As can be seen in the figure, the connection of the holder 4, 4.1 to the display 5 is realized at a small distance from the lower end in the lower half of the display. The display 5 is thus connected eccentrically in the height direction (z direction) to the holding device 3. The distance of the holder 4, 4.1 from the upper end 6 of the display 5 in the z direction is significantly greater than the distance of the holder 4, 4.1 from the lower end 7 of the display.

[0026] As explained below with reference to bracket 4, brackets 4, 4.1 have a predetermined curvature so that if the upper end 6 of display 5 is subjected to acceleration, for example due to a collision with an occupant's head, the display 5 bends at its upper end 6 toward cross member 2 to avoid or reduce the risk of injury. If an impact on the operating surface of the display 5 from the direction of the passenger compartment acts less as a tilting load, thereby inducing a bending moment into the respective bracket, but acts more strongly as a load in the x-direction at the height of the display 5, brackets 4, 4.1 bend, thereby reducing the distance between display 5 and cross member 2. Brackets 4, 4.1 thus serve to absorb energy and are designed not to break in the event of bending.

[0027] The brackets 4, 4.1 are spaced relatively far apart in the y-direction relative to the extension of the display 5 in this direction and are connected to the display only at a small distance from the side ends of the display 5 pointing in the y-direction. The brackets 4, 4.1 protrude from the crossbar 2 in the x-direction.

[0028] The following description of the support 4 also applies to the support 4 . 1 which is designed to be mirror-symmetrical with respect to the support 4 .

[0029] The support 4 is designed in the manner of a load-bearing structure and has an upper chord 8 and a lower chord 9 spaced apart from the upper chord in the z-direction. The display 5 is connected to the connection side 10, with the spacing of the chords 8, 9 decreasing from the connection side 10 towards the crossbar connection 11 of the display. Figure 4 As can be seen from a perspective view of the center support 4, looking inward, each chord is composed of two side walls 12, 12.1; 13, 13.1, arranged at right angles to one another. The side walls 12, 12.1 lie in the xy plane. The side walls 13, 13.1 lie in the yz plane. The side walls 13, 13.1 of the two chords 8, 9 face each other and delimit a recess 14. In addition to the side walls 13, 13.1, the recess 14 is bounded in the region of the connecting side 10 by a web 15 connecting the side walls 13, 13.1. On the side facing the crossbeam 2, the recess 14 is bounded by the convergence of the side walls 13, 13.1, forming a web 16 connecting the chords 8, 9. The side walls 12, 13, 12.1, 13.1 abut one another at right angles, forming a radius. This radius is a result of the manufacturing process of the support 4, which is produced as a punched and bent part made of sheet steel. At the connecting side 10, the horizontal side walls 12, 12.1 are widened in their end sections (see Figure 3 and Figure 4 ) so that the side walls can be fitted with connectors to enable the display 5 to be connected thereto. In the embodiment shown, these connectors are circular openings 17, 17.1 for passing bolt fasteners (not shown in the figure). Figure 5It can be seen that a compression nut 18 is connected to the underside of the corresponding widening of the side wall 12 . 1 of the lower chord 9 , into the internal thread of which a screw fastener can be fastened, wherein the screw fastener with its shank passes through the opening 17 in the side wall 12 of the upper chord 8 and the connecting piece 19 of the display 5 .

[0030] The geometry of the upper chord 8 is designed so that the upper chord has a first nominal bending point S1, through which the chord 8 bends in the z direction when an acceleration caused by an accident acts on the upper terminal 6 of the display 5, as shown in FIG. Figure 2 As indicated by the arrow in FIG. The rated bending point S1 is provided by the concave section 20 of the extension of the side wall 12. Figure 2 In the side view, this concave design is evident from the correspondingly varying height of the upper chord 8. In the event of bending of the upper chord 8, the crossbeam 2 located in the x-direction behind the desired bending point S1 in the direction of the impact acts as a support. The higher bending stiffness of the bracket 4 in the region of its crossbeam connection 11 and the convergence of the side walls 13, 13.1 to form the connecting plate 16 also serve as a support, defining the desired bending point S1 at which the connecting-side chord section of the upper chord 8 bends or curves relative to the other chord section to absorb energy. To avoid notch stress concentration effects, the mutually directed edges of the side walls 13, 13.1 converge toward the connecting plate 16 at a radius 21. In the illustrated embodiment, the concave section 20 in the upper chord 8 is formed by the transition of the upper chord 8 from a section with a smaller inclination in the section including the cross-beam connection 11 to a section with a larger inclination relative to the horizontal in the chord section extending from the concave section 20 to the connection side 10. The desired bending point S1 is located at the apex of the concave section. In this section, the side wall 12 also lies in the xy plane according to the aforementioned definition, as used within the scope of these embodiments. The bending axis of the desired bending point S1 extends in the y-direction.

[0031] Adjacent to the widened section of the side wall 12 with the opening 17, the upper profile of the upper chord 8 is convexly curved in the section 22. In this respect, as from Figure 2 As can be seen, the side wall 12 has a curved extension along its longitudinal extension.

[0032] from Figure 3As can be seen from the top view of FIG, the bracket 4 is bent into an S-shape in the xy plane, thereby forming a flexure. The deflection of this flexure points in the y direction. The chord sections offset from one another by the flexure do not overlap when aligned (in the x direction). This geometry provides a setpoint bending point S2, S3 in each of the two chords 8, 9, at which the chords 8, 9 bend in the y direction toward the crossbeam 2 when a corresponding force is applied to the display 5 in the x direction. The bending axes of these setpoint bending points S2, S3 extend in the z direction (including permissible deviations).

[0033] The chord sections on the connection side of the crossbeam adjoin the crossbeam 2 at right angles in the yz plane. The chord sections on the connection side, separated from these chord sections by the desired bending points S2, S3, are tilted relative to the connection direction, specifically at an angle α of approximately 8.5° in the illustrated embodiment. This tilt, which is arranged counter to the deflection direction of the flexure, serves to activate the presetting of the desired bending points S2, S3 present in the two chords 8, 9.

[0034] The support 4 therefore has desired bending points S1 to S3 , by means of which it can be bent in two directions in order to absorb energy.

[0035] In this design, the bending force required can be adjusted to the vehicle-specific application by correspondingly adjusting the height of the side walls 13, 13.1, the extent of the recess 14, and the presetting provided by the flexure, so that only the most significant influencing quantities are addressed. Consequently, the brackets 4, 4.1 of the retaining device 3 can be very precisely adjusted to the forces to be absorbed in the event of an accident. The use of two brackets 4, 4.1 also allows them to be designed differently with respect to their respective crash performance. Of course, the retaining device as a whole must meet crash performance requirements. This allows for different bracket designs to accommodate the unique display positions and / or instrument panel crossbar geometries of each vehicle.

[0036] The above-described design of the bracket 4, 4.1 of the holding device 3 clearly shows that tensile forces acting on the upper end 6 of the display 5 do not lead to deformation of the bracket 4, 4.1 or one of its chords 8 or 9, at least not by such forces, which are coupled into the display 5 in the event that the user mistakenly uses the upper end 6 of the display 5 as a handle to stand up.

[0037] In the embodiment, the bracket described with reference to the accompanying drawings is made of steel plate. Of course, as an alternative to this material, other materials, such as aluminum alloy, can also be used. Of course, non-metallic materials can also be used.

[0038] Reference Signs List

[0039] 1 Component

[0040] 2 Instrument panel crossbeam

[0041] 3 holding device

[0042] 4.4.1 Bracket

[0043] 5. Display

[0044] 6. Go to the terminal

[0045] 7. Open the terminal

[0046] 8 Upper chord

[0047] 9 Lower chord

[0048] 10 Connection side

[0049] 11 Beam connection

[0050] 12.1 Sidewall

[0051] 13.1 Sidewall

[0052] 14 blank space

[0053] 15 Connecting plate

[0054] 16 Connecting plate

[0055] 17.1 Opening

[0056] 18 Compression nut

[0057] 19 Connectors

[0058] 20 concave sections

[0059] 21 Radius

[0060] 22 convex sections

[0061] S1-S3 rated bending

[0062] α angle

Claims

1. A component for a vehicle, comprising a crossbeam (2), a holding device (3) and a plate-type instrument, the crossbeam being configured to be connected to two columns opposite to each other relative to an xz plane of the vehicle, the holding device being connected to the crossbeam (2) and radially projecting from the crossbeam and comprising two brackets (4, 4.1) spaced apart from each other in the y direction, the holding device having a connecting piece (17, 17.1, 18) on the end side, the plate-type instrument being connected to the connecting piece (17, 17.1, 18) of the holding device (3) at a position spaced apart from an upper terminal end of the plate-type instrument, the plate-type instrument being held so that an operating surface of the plate-type instrument points in the x direction toward a passenger compartment of the vehicle, characterized in that The two supports (4, 4.1) are designed as supporting structure supports each having an upper chord (8) and a lower chord (9), the two chords (8, 9) each having two side walls (12, 13, 12.1, 13.1) adjacent to each other at an angle, one side wall being in the yz plane and the other side wall being in the xy plane, and the two chords being arranged obliquely relative to each other so that the two chords are at a greater distance from each other on the instrument connection side than at the ends of the chords facing the crossbeam (2), and at least one of the two chords (8, 9) has at least one rated bending point between its two connection points provided by the geometry of the chord, at which the chord bends in the z and / or y directions under a load in the x direction.

2. The assembly according to claim 1, characterized in that The side walls (13, 13.1) of one of the two chords (8, 9) located in the yz plane are arranged to point in the direction of the other chord.

3. The assembly according to claim 1, characterized in that The two chords (8, 9) of each support (4, 4.1) each have at least one nominal bending point provided by the geometry, at which the chords (8, 9) bend in the z and / or y directions under a load in the x direction.

4. The assembly according to claim 1, wherein The two chords (8, 9) of each bracket (4, 4.1) each have a nominal bending point, at which the chords (8, 9) bend in the y direction under a load in the x direction.

5. The assembly according to claim 4, characterized in that The two chords (8, 9) of each bracket (4, 4.1) have a flexure pointing in the y direction in their projection on the xy plane, and the flexure has such an offset that the two chord sections offset relative to each other by the flexure do not overlap in the y direction when their longitudinal extensions are aligned.

6. The assembly according to claim 5, characterized in that The chord sections of the two chords (8, 9) that carry the connecting element are inclined opposite to the offset direction of the flexure.

7. The assembly according to claim 6, characterized in that The chord sections of the two chords (8, 9) that carry the connecting element are inclined opposite to the offset direction of the flexure, wherein the inclination angle is between 7 and 11 degrees.

8. The assembly according to claim 1, wherein Under load in the x-direction, the upper chord (8) bends in the z-direction at a nominal bending point. To form this nominal bending point, the upper chord (8) has a concave section (20) along its longitudinal extension, the vertex axis of which extends in the y-direction.

9. The assembly according to claim 1, wherein Due to the designed geometry of the support (4, 4.1), the support has a higher bending stiffness at a position spaced apart from at least one desired bending point in the direction of the crossbeam connection (11) of the support than in the region of the desired bending point and in the region from the direction of the connection (17, 17.1, 18) to the chord section located before the desired bending point.

10. The assembly according to claim 9, characterized in that In order to increase the bending stiffness of the two chords (8, 9), the two chords converge toward the crossbeam connection (11) with their side walls (13, 13.1) located in the yz plane, and the two chords (8, 9) are connected to each other by means of a first connecting plate (16) through the convergence of these side walls (13, 13.1).

11. Assembly according to claim 9 or 10, characterized in that In order to increase the bending stiffness of the two chords (8, 9), the side walls (12, 12.1) of the two chords (8, 9) located in the xy plane are designed to have a larger width.

12. The assembly according to claim 1, wherein The two chords (8, 9) of the support (4, 4.1) are connected to one another in the region of the ends of their load-bearing connecting elements (17, 17.1, 18) via a second connecting plate (15).

13. The assembly according to claim 1, wherein The two chords (8, 9) of the support (4, 4.1) have a greater width in the end sections of their load-bearing connections (17, 17.1, 18) than in the chord sections adjacent to the end sections.

14. The assembly according to claim 1, wherein The side walls (12.1) of the lower chord (9) located in the xy plane each have a compression nut as a connecting piece on the outside for fixing a fastening bolt, which passes with its shaft through an opening in the side wall (12) of the upper chord (8) located in the xy plane and a connecting piece (19) of the plate-type instrument arranged between the side walls (12, 12.1) of the two chords (8, 9) located in the xy plane.

15. The assembly according to claim 1, wherein The support (4, 4.1) is produced as a punched and bent part from sheet steel.

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