Support assembly for supporting a device of a motor vehicle on a structural component of the motor vehicle

Abstract

The invention relates to a support assembly for supporting a device (8) of a motor vehicle. The support assembly comprises at least two first supports (2), each of which comprises a pipeline (4) and a connecting element (6). The pipeline (4) is connected to the device (8) at a pipeline connection point (10). The pipeline (4) is fixed to a structural component of the motor vehicle by means of the connecting element (6). The first supports (2) each have such a support rigidity that the forces caused by the rotation of the device (8) and introduced into the structural component of the vehicle via the first supports (2) cancel each other out.

Description

Technical Field

[0001] The invention relates to a bearing arrangement or a device mount for mounting a device of a motor vehicle on a structural component of the motor vehicle. Background Art

[0002] Support assemblies for supporting a device of a motor vehicle on a structural component of the motor vehicle are known from the prior art in various embodiments.

[0003] DE 102018131998 A1 describes a device fastening for fastening a device to a vehicle body in a vibration-capable manner. The device fastening comprises a first support part, a second support part and an elastic damping element. The forces introduced into the vehicle body via the device fastening are reduced by means of the elastic damping element. The softer or more elastically deformable the damping element is, the better the damping effect of the damping element is.

[0004] Furthermore, fastening devices are known from the prior art for fastening lines, via which fluids are supplied to or discharged from the device.

[0005] DE 20020829 U1 describes an apparatus support for supporting an apparatus, which apparatus support comprises a receptacle for a pipeline of the apparatus. In order to fix the pipeline on the apparatus support, the pipeline is pressed against the apparatus support by means of a fixing element.

[0006] In both known bearing assemblies for mounting a device on a structural component of a motor vehicle and known fastening devices for fastening a line to a structural component of a motor vehicle, forces caused by the rotational movement of the device are introduced into the structural component of the motor vehicle via the bearing assemblies or the fastening devices. These forces cause vibrations in the structural component. The vibrations of the structural component in turn lead to undesirable acoustic properties of the structural component or disturbing noises. Summary of the invention

[0007] Starting from DE 20020829 U1, the object of the present invention is to provide a bearing arrangement which reliably supports or fixes devices and lines for supplying and draining fluids and at the same time optimizes or minimizes the influence of the rotational movement of the device on the acoustic properties of components of a motor vehicle.

[0008] This object is achieved by a mounting arrangement for mounting a device of a motor vehicle on a structural component of the motor vehicle.

[0009] Therefore, according to the present invention, a support assembly for supporting a device of a motor vehicle, in particular an electric coolant compressor or an air conditioning compressor, on a structural component of the motor vehicle is provided, the support assembly comprising at least two first supports. Each of the first supports comprises a pipeline or a hose and a rigid connecting element. The pipelines each comprise a pipeline connection point at one end, at which the pipeline is connected to the device or connected to the device. The connecting element fixes the pipeline to the structural component of the motor vehicle. The first supports each have such a support rigidity that the forces caused by the rotation of the device and introduced into the structural component of the vehicle via the first supports cancel each other out.

[0010] In the bearing assembly according to the invention, the lines for supplying and draining the fluid are themselves an integral part of the bearing assembly of the bearing device. Therefore, no additional fastening means are required to fasten the lines to the structural components of the motor vehicle. This reduces the number of regions into which forces caused by the rotation of the device are introduced into the structural components of the motor vehicle.

[0011] Furthermore, the forces introduced into the component are at least largely compensated for by the first bearing being designed in such a way that it has a bearing rigidity that acts symmetrically with respect to the center of gravity of the device.

[0012] Thus, by means of the bearing arrangement according to the invention, devices and lines can be reliably supported or fastened to the structural component, while at the same time minimizing the influence of the rotational movement of the device on the structural component of the motor vehicle and thus optimizing the acoustic properties of the structural component.

[0013] In a preferred embodiment of the bearing arrangement according to the invention, the first bearing element has a bearing rigidity which acts symmetrically with respect to the center of gravity, in particular the center of mass or the mass center, of the device.

[0014] In an exemplary embodiment of the bearing assembly according to the invention, the first bearing has a rotational rigidity acting symmetrically with respect to the center of gravity of the device about a rotational axis extending towards the center of gravity of the device.

[0015] The rigidity of the first bearing part is defined, for example, by the material rigidity and geometry of the connecting element and by the material rigidity and geometry of the line.

[0016] In a preferred embodiment of the support arrangement according to the invention, the lines are shaped hoses, ie the lines are pre-shaped in such a way that they have arched or curved extensions or partial regions.

[0017] The pipeline comprises, for example, a U-shaped partial region.

[0018] In an exemplary embodiment of the bearing arrangement according to the invention, the lines each have such a rigidity, in particular a bending rigidity and a torsional rigidity, that the forces caused by the rotational movement of the device and introduced into the structural component of the vehicle via the bearing element cause vibrations of the structural component to cancel each other out. This further reduces the influence of the rotational movement of the device on the acoustic properties of the structural component of the motor vehicle.

[0019] The pipeline connection points can be arranged symmetrically to each other about the center of gravity of the device, ie at the same distance from the device. In this way, two identical first supports can be used.

[0020] In a preferred embodiment, the support assembly according to the present invention comprises two second supports. The centers of the pipeline connection points of the two first supports and the elastic centers or surface gravity centers of the two second supports form a plane or a two-dimensional surface, and the center of gravity of the device is arranged in the two-dimensional surface.

[0021] Within the scope of the present invention, the term “elastic center” is to be understood as the point of an object at which the axes of elastic bearing of the object at least approximately intersect.

[0022] The formed two-dimensional surface may include at least two symmetry axes. The two symmetry axes may extend perpendicularly to each other and intersect at the center of gravity of the device. The first support and the second support may be constructed symmetrically to each other and have the same support rigidity. Therefore, only two supports are required, namely a first support and a second support.

[0023] The formed two-dimensional surface is, for example, a rectangle, a square or a rhombus.

[0024] The second bearing element may be a bushing bearing element.

[0025] In a preferred embodiment of the bearing assembly according to the invention, the connecting element of the first bearing can be connected to the same structural component of the motor vehicle. In particular, the connecting element of the first bearing can be connected to the same partial area of ​​the structural component of the motor vehicle. As a result, the acoustic transfer function or the sensitivity of the structural component at the connection point of the bearing point on the structural component is the same or at least similar, thereby ensuring a compensation effect of vibrations of the structural component.

[0026] The second support element can also be connected to the same structural component of the motor vehicle, in particular to the same partial area of ​​the structural component. The structural component sensitivity of the connection point of the second support element on the structural component is therefore the same, thereby ensuring a compensating effect for vibrations of the structural component.

[0027] In an exemplary embodiment of the bearing assembly according to the invention, the first bearing element and the second bearing element can be connected to the same rigid structural component of the motor vehicle. This further increases the vibration compensation effect.

[0028] The connecting element of the first support and / or the second support can be connected to the structural component of the motor vehicle via a rigid bracket structure. Therefore, the support assembly can be adapted to the installation space conditions in a simple manner.

[0029] The support structure may have a rigidity corresponding to that of the structural component.

[0030] The structural component of the motor vehicle can be a longitudinal beam. The longitudinal beam can have a hollow profile. The longitudinal beam can also have an O-shaped, rectangular or U-shaped profile.

[0031] The conduit may comprise an elastomer. Thus, the conduit is elastically deformable, whereby the geometry of the conduit can be reversibly changed and the rigidity of the associated first support can be adjusted or varied by changing the geometry of the conduit.

[0032] The pipeline can also be a fiber-plastic composite, i.e., it comprises reinforcing fibers and a plastic matrix. The plastic matrix surrounds the fibers, which are bonded to the plastic matrix by adhesive interactions. The reinforcing fibers give the pipeline a high dynamic load capacity and are also resistant to aging and corrosion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings. The accompanying drawings are as follows:

[0034] Figure 1 shows a schematic front view of a support assembly according to the invention, which supports a device of a motor vehicle on a longitudinal beam of the motor vehicle; and

[0035] Figure 2 Show Figure 1 A schematic side view of a support assembly is shown in FIG. DETAILED DESCRIPTION

[0036] exist Figure 1 , a bearing arrangement is shown which supports a device 8 on a rigid longitudinal beam 14 of a motor vehicle. The bearing arrangement comprises two first bearing parts 2. The two first bearing parts 2 each have a pipeline 4 and a rigid connecting element 6.

[0037] The device 8 is an electric refrigerant compressor or air-conditioning compressor.

[0038] The rigid connecting elements 6 each fix the associated pipeline 4 to a rigid support structure 12, which in turn is fixed to a rigid longitudinal beam 14. The rigid longitudinal beam 14 has a rectangular hollow profile. It is also conceivable that the longitudinal beam 14 has a U-shaped profile.

[0039] The pipelines 4 are made of a fiber-reinforced elastomer with defined rigidity. The rigidity of the first support 2 is increased by the geometric deformation or geometric arrangement of the pipelines 4. For this purpose, the pipelines 4 are bent in such a way that they have semicircular or U-shaped partial areas. The pipelines 4 have the same geometric design, in particular the curvature, and are made of the same material. The pipelines thus have the same rigidity.

[0040] The pipelines 4 are connected to the device 8 at the pipeline connection points 10 in such a way that the pipelines can supply fluid to the device 8 and discharge fluid from the device 8. The pipeline connection points 10 are arranged symmetrically with respect to the center of gravity of the device 10. Due to this symmetrical arrangement and due to the fact that the first supports 2 have the same rigidity, the vibrations caused by the forces generated by the rotational movement of the device 8 and introduced into the support structure 12 by the two first supports 2 interfere with each other in such a way that the vibrations of the support structure 12 are offset or balanced. As a result, the generation of vibrations or disturbing noises is prevented or at least minimized.

[0041] like Figure 2 It can be seen that the support assembly further comprises two second supports 16. The second supports 16 are sleeve supports. The second supports 16 are connected to the device 8 via the protrusions 20 or support elements of the device 8 respectively.

[0042] The two second supports 16 each have an elastic center 18. The second supports 16 are arranged on the support structure 12 in such a way that when the device 8 is supported on the longitudinal beam 14 by means of the support assembly, the elastic centers 18 of the two second supports 16 together with the midpoints of the pipeline connection points 10 of the two first supports 2 form a two-dimensional plane, in which the center of gravity of the device 8 is arranged.

[0043] The two-dimensional surface formed includes Figure 2 The first symmetry axis 22 and the second symmetry axis 24 shown in FIG. Figure 1 ). The first symmetry axis 22 and the second symmetry axis 24 extend perpendicularly to each other and intersect at the center of gravity of the device 8. The two-dimensional surface formed is a rectangle.

[0044] The first support member 2 is configured to be axisymmetric or mirror-symmetrical about the first symmetry axis 22. The second support members 16 are axisymmetric about the second symmetry axis 24. Like the first support members 2, each second support member 16 also has the same rigidity.

[0045] Due to the symmetrical arrangement of the first support 2 and the second support 16 and the first support 2 and the second support 16 respectively having the same rigidity, the vibration of the longitudinal beam 14 caused by the force introduced into the longitudinal beam 14 through the first support 2 and the vibration of the longitudinal beam 14 caused by the force introduced into the longitudinal beam 14 through the second support 16 respectively interfere with each other in such a way that the vibrations are balanced or offset. Therefore, the second support 16 also prevents or minimizes the generation of disturbing noise and at the same time improves the load-bearing capacity and reliability of the bearing assembly.

[0046] Reference numerals list

[0047] 2First support member

[0048] 4 pipelines

[0049] 6 Connecting elements

[0050] 8 Equipment

[0051] 10 Pipeline connection points

[0052] 12 support structure

[0053] 14 Stringer

[0054] 16 Second support member

[0055] 18 Elastic Center

[0056] 20 Equipment protrusion

[0057] 22 First axis of symmetry

[0058] 24 Second axis of symmetry

Claims

1. A support assembly for supporting a device (8) of a motor vehicle on a structural component of the motor vehicle, the support assembly comprising two first support elements (2), characterized in that: Each of the first supports (2) comprises a pipeline (4) and a connecting element (6), wherein the pipeline (4) can be connected to the device (8) at one end at a pipeline connection point (10) and can be fixed to a structural component of the motor vehicle by means of the connecting element (6), and each of the first supports (2) has such a support rigidity that the forces caused by the rotation of the device (8) and introduced into the structural component of the vehicle via the first supports (2) cancel each other out.

2. The support assembly according to claim 1, characterized in that Each of the first support members (2) has a support rigidity that acts symmetrically about the center of gravity of the device (8).

3. The support assembly according to claim 1, characterized in that The first support (2) has a rotational rigidity acting symmetrically with respect to the center of gravity of the device (8) about a rotational axis extending toward the center of gravity of the device (8).

4. The support assembly according to any one of claims 1 to 3, characterized in that The rigidity of the first support (2) is defined by the material rigidity of the connecting element (6), the geometry of the connecting element (6), the material rigidity of the pipeline (4) and the geometry of the pipeline (4).

5. The support assembly according to any one of claims 1 to 3, characterized in that The lines (4) each have such rigidity that the forces introduced by the device (8) via the lines (4) and the connecting element (6) into the structural component of the vehicle and caused by the rotational movement of the device (8) cancel each other out.

6. The support assembly according to any one of claims 1 to 3, characterized in that The pipeline connection points (10) are arranged symmetrically to each other with respect to the center of gravity of the device (8).

7. The support assembly according to any one of claims 1 to 3, characterized in that Two second supports (16) are provided, the midpoints of the pipeline connection points (10) of the two first supports (2) and the elastic centers (18) of the two second supports (16) form a two-dimensional surface, and the center of gravity of the device (8) is arranged in the two-dimensional surface.

8. The support assembly according to claim 7, characterized in that The formed two-dimensional surface includes at least two symmetry axes (22, 24) extending perpendicularly to each other and intersecting at the center of gravity of the device (8), and the first support (2) and the second support (16) are symmetrical to each other and have the same support rigidity.

9. The support assembly according to claim 7, characterized in that The two-dimensional surface formed is a rectangle, square or rhombus.

10. The support assembly according to claim 7, characterized in that The resulting two-dimensional surface is a polygon with an even number of angles.

11. The support assembly according to any one of claims 1 to 3, characterized in that The first support element (2) and / or the second support element (16) can be connected to the same rigid structural component of the motor vehicle.

12. The support assembly according to any one of claims 1 to 3, characterized in that The first support element (2) and / or the second support element (16) can be connected to a structural component of the motor vehicle via a support structure (12).

13. The support assembly according to claim 7, characterized in that The second support (16) is a sleeve support.

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