Support assembly for supporting a motor vehicle assembly on the structural components of the motor vehicle.

Abstract

The present invention relates to a support assembly for supporting a motor vehicle assembly (8) on a structural component of the motor vehicle, the support assembly comprising four support members (4), each support member having an elastic center (22). The four support members (4) are arranged on the structural component of the motor vehicle such that the elastic centers (22) of the four support members together unfold into a two-dimensional plane (20), in which the center of mass (12) of the assembly (8) to be supported is arranged.

Description

TECHNICAL FIELD

[0001] The invention relates to a bearing assembly or assembly bearing for bearing an assembly of a motor vehicle on a structural component of the motor vehicle, comprising four bearings with an elastic center. BACKGROUND

[0002] Bearing assemblies for bearing an assembly on a structural component of a motor vehicle are known in different embodiments from the prior art.

[0003] DE 102 018 131 998 A1 describes an assembly fixture for vibrationally fixing an assembly on a vehicle body. The assembly fixture comprises a first bearing, a second bearing and an elastic vibration damping element. The force introduced into the vehicle body via the assembly fixture is reduced by means of the elastic vibration damping element. The softer or more elastically deformable the vibration damping element is configured, the better the damping effect of the vibration damping element.

[0004] In the assembly fixture disclosed by DE 102 018 131 998 A1, forces generated by the assembly rotating are introduced into the vehicle body and cause disturbing vibrations in the vehicle body, thus reducing the likelihood of relative movement between the assembly and the structural component.

[0005] However, the elasticity of the vibration damping element or the relative movement of the assembly with respect to the vehicle body is limited in order to prevent the assembly from impacting on the vehicle body in an undesirable manner. The achievable damping effect of the assembly fixture known from DE 102 018 131 998 A1 is therefore limited. Furthermore, even small forces or damped forces cause vibrations in the vehicle body which result in negative acoustic properties of the vehicle body or disturbing noises. SUMMARY

[0006] Starting from the assembly fixture known from DE 102 018 131 998 A1, it is an object of the present invention to provide a bearing assembly for bearing an assembly of a motor vehicle on a structural component of the motor vehicle, which reliably bears the assembly and at the same time eliminates or at least minimizes or reduces the influence of rotational movements of the assembly on the acoustic properties of the structural component.

[0007] The object is achieved by a bearing assembly according to the invention.

[0008] According to the application, therefore, a support assembly for supporting an assembly of a motor vehicle, in particular an electric refrigerant compressor or an air-conditioning compressor, at a structural component of the motor vehicle is provided. The support assembly comprises four supports having elastic centers. The four supports can be arranged on the structural component or on a partial region of the structural component such that the elastic centers of the four supports together spread out a flat or two-dimensional plane in which the mass center or the center of mass of the assembly to be supported is located.

[0009] According to the application, therefore, a support assembly for supporting an assembly of a motor vehicle, in particular an electric refrigerant compressor or an air-conditioning compressor, at a structural component of the motor vehicle is provided. The support assembly comprises four supports having elastic centers. The four supports can be arranged on the structural component or on a partial region of the structural component such that the elastic centers of the four supports together spread out a flat or two-dimensional plane in which the mass center or the center of mass of the assembly to be supported is located.

[0010] Within the scope of the application, the term "elastic center" is to be understood as the point of an object at which the elastic support axes of the object at least approximately intersect.

[0011] In a preferred embodiment of the support assembly according to the application, the spread-out two-dimensional plane comprises two axes of symmetry.

[0012] The axes of symmetry can extend orthogonally to one another. The axes of symmetry can also intersect in the center of mass of the assembly to be supported.

[0013] The four supports can have the same support stiffness.

[0014] In an advantageous embodiment of the support assembly according to the application, a first support of the supports is arranged displaced toward or away from the center of mass of the assembly in the direction of the center of mass of the assembly starting from an arrangement of the supports in which the elastic centers spread out a two-dimensional plane comprising at least two axes of symmetry extending orthogonally to one another and intersecting in the center of mass of the assembly. The support stiffness of the supports is designed such that vibrations of the vehicle structure produced by forces introduced into the vehicle structure by the support assembly and produced by the rotational movement of the assembly cancel one another out.

[0015] Thus, if the first bearing is arranged to be displaced in the direction of the mass center of the assembly, the bearing stiffness of the first bearing is greater than the bearing stiffness of the remaining or other bearings. If, however, the first bearing is arranged to be displaced away from the mass center of the assembly, that is to say, the first bearing is more remote from or further away from the mass center of the assembly than the other bearings, the bearing stiffness of the first bearing is less than or lower than the bearing stiffness of the remaining bearings.

[0016] Thus, the asymmetry in the bearing arrangement is compensated by means of the bearing stiffness, such that the vibrations of the structural component caused by the rotation of the assembly and introduced into the structural component by the bearing assembly cancel each other out or balance.

[0017] In a preferred embodiment of the bearing assembly according to the application, the closer a bearing is to the mass center of the assembly, the greater or stiffer the bearing stiffness of said bearing is. Thereby, it is ensured that the bearing assembly guarantees sufficient bearing reliability or that the assembly does not collide in an undesired manner on the structural component.

[0018] In an exemplary embodiment of the bearing assembly according to the application, the bearings which are opposite each other with respect to the mass center of the assembly to be supported are attached on the same structural component of the motor vehicle, in particular on the same partial region of the structural component of the motor vehicle.

[0019] In a preferred embodiment of the bearing assembly according to the application, the bearings are attached on the same structural component of the motor vehicle, in particular on the same partial region of the structural component of the motor vehicle.

[0020] The structural component of the motor vehicle or the partial region of the structural component of the motor vehicle on which the bearings are arranged is thus the same structural component or partial region. At the same time, the acoustic transfer action or the structural component sensitivity is also the same or at least similar for all bearing points, thereby ensuring a compensation effect on the vibrations of the structural component.

[0021] The structural component of the motor vehicle is for example a longitudinal beam. The longitudinal beam can comprise a U-shaped or rectangular profile. The longitudinal beam can also have a hollow profile.

[0022] In a preferred embodiment, the bearing assembly according to the application comprises at least two further bearings.

[0023] The total number of bearings is for example even. Thus, a symmetrical configuration of the bearing assembly is possible.

[0024] The two-dimensional surface which is developed by each elastic center is for example rectangular, square, diamond-shaped or polygonal with an even number of corners.

[0025] In an exemplary embodiment of the bearing assembly according to the application, the bearings are sleeve bearings.

[0026] Support components can be attached to structural members using rigid bracket structures. Therefore, support assemblies can be easily adapted to structural space conditions.

[0027] The support structure can have a stiffness corresponding to that of the structural components. Attached Figure Description

[0028] The invention will now be described in detail with reference to embodiments shown in the accompanying drawings. In the drawings:

[0029] Figure 1 A schematic diagram of a support assembly according to the invention is shown in a side view, the support assembly supporting a motor vehicle assembly on a structural component of the motor vehicle;

[0030] Figure 2 Shown in front view Figure 1 A schematic diagram of the support assembly according to the present invention; and

[0031] Figure 3 Shown by Figure 1 A schematic diagram of the two-dimensional surfaces of each support member of the support assembly according to the present invention. Detailed Implementation

[0032] Figure 1 and Figure 2 A support assembly 2 is shown for supporting the motor vehicle assembly 8 on the rigid longitudinal beam 14 of the motor vehicle. The support assembly 2 includes four support members 4 with elastic centers 22 and a bracket structure 6 for attaching the support members 4 to the longitudinal beam 14.

[0033] Assembly 8 is an electric refrigerant compressor or an air conditioning compressor.

[0034] Longitudinal beam 14 is a rigid structural component of the vehicle body. For example... Figure 2 As shown, the longitudinal beam 14 has a rectangular hollow profile.

[0035] The support member 4 is arranged on the longitudinal beam 14 via the bracket structure 6. The stiffness of the bracket structure 6 corresponds to the stiffness of the longitudinal beam 14.

[0036] Support member 4 is a sleeve support member. Support member 4 is connected to or supports assembly 8 via protrusion 10 of assembly 8. Support member 4 is attached to longitudinal beam 14 via bracket structure 6, such that the elastic centers 22 of each support member 4 together unfold a two-dimensional surface 20, in which the center of mass 12 of the supported assembly 8 is located.

[0037] Especially as by Figure 3As can be seen, the unfolded two-dimensional surface 20 is rectangular. The unfolded two-dimensional surface 20 includes a first axis of symmetry 16 and a second axis of symmetry 18. The first axis of symmetry 16 and the second axis of symmetry 18 extend orthogonally to each other and intersect at the center of mass 12 of the supported assembly 8.

[0038] The support members 4, which are arranged opposite or point-symmetrically about the center of mass 12 of the supported assembly 8, have the same stiffness. Therefore, the forces generated by the rotation of the assembly 8 and introduced into the longitudinal beam 14 through the point-symmetrically constructed support members 4 about the center of mass 12 interfere with each other, causing these forces to balance or cancel each other out. This eliminates or reduces the effect of the rotation of the assembly 8 on the acoustic characteristics of the longitudinal beam 14.

[0039] List of reference numerals

[0040] 2 Support Components

[0041] 4 Support components

[0042] 6. Support Structure

[0043] 8 Motor vehicle assembly

[0044] 10 protrusions

[0045] 12. Center of gravity of the assembly

[0046] 14 Longitudinal beams

[0047] 16 First axis of symmetry

[0048] 18 Second axis of symmetry

[0049] 20 Two-dimensional surfaces

[0050] 22 Elastic Center

Claims

1. A support assembly for supporting an assembly (8) of a motor vehicle on a structural component of the motor vehicle, the support assembly comprising four supports (4), each of the supports having a resilient centre (22), characterised in that, The four bearings (4) can be arranged on a structural component of the motor vehicle such that the elastic centers (22) of the four bearings together unfold a two-dimensional plane (20) in which a mass center of gravity (12) of the assembly (8) to be supported lies, wherein the unfolded two-dimensional plane (20) comprises two axes of symmetry (16, 18) which extend orthogonally to one another and intersect in the mass center of gravity (12) of the assembly (8) to be supported, and the four bearings (4) have the same bearing stiffness.

2. The support assembly of claim 1, wherein, A first one of the bearings (4) is arranged displaced towards or away from the mass center of gravity (12) of the assembly (8) from an arrangement of the bearings (4) in which the elastic centers (22) unfold a two-dimensional plane (20) which comprises at least two axes of symmetry (16, 18) which extend orthogonally to one another and intersect in the elastic centers (22) of the assembly (8), wherein the bearing stiffness of the bearings (4) is designed such that vibrations of the structural component of the motor vehicle which are caused by forces which are introduced into the structural component of the motor vehicle by the bearing assembly and are produced by the rotational movement of the assembly (8) cancel one another out.

3. The support assembly of claim 1 or 2, wherein, The closer a bearing (4) is to the mass center of gravity (12) of the assembly (8), the greater the bearing stiffness of the bearing.

4. The support assembly of claim 1 or 2, wherein, The bearings (4) which are opposite one another with respect to the mass center of gravity (12) of the assembly (8) to be supported are attached to the same structural component of the motor vehicle.

5. The support assembly of claim 1 or 2, wherein, The bearings (4) are attached to the same structural component of the motor vehicle.

6. The support assembly of claim 1 or 2, wherein, Two further bearings are provided.

7. The support assembly of claim 1 or 2, wherein, The total number of the bearings (4) is even.

8. The support assembly of claim 1 or 2, wherein, The two-dimensional plane (20) is rectangular.

9. The support assembly of claim 1 or 2, wherein, The two-dimensional plane (20) is square.

10. The support assembly of claim 1 or 2, wherein, The two-dimensional plane (20) is diamond-shaped.

11. The support assembly of claim 1 or 2, wherein, The two-dimensional plane (20) is a polygon with an even number of corners.

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