Spring support for a motor vehicle

Abstract

The invention relates to a spring support for a motor vehicle, the spring support comprising a lower flange in the motor vehicle height direction for fastening the spring support to a motor support, the motor support extending in the motor vehicle longitudinal direction in the front compartment structure of the motor vehicle, an upper flange in the motor vehicle height direction is used for fastening the spring support to a longitudinal beam, the longitudinal beam extends in the front compartment structure of the motor vehicle in the motor vehicle longitudinal direction, and the longitudinal beam is arranged above the motor support in the motor vehicle height direction. And a base body connecting the lower flange and the upper flange for accommodating a spring strut for a front wheel of the motor vehicle. In at least one partial region in the longitudinal direction of the motor vehicle, the base body extends upwards in the height direction of the motor vehicle starting from the lower flange without bending in the width direction of the motor vehicle.

Description

Technical Field

[0001] The invention relates to a spring support for a motor vehicle, a front compartment structure of a motor vehicle having the spring support, and a motor vehicle having the front compartment structure. Background Art

[0002] Spring supports of the type mentioned are known from the prior art for motor vehicles.

[0003] In this regard, DE 10 2011 085 823 A1 relates to a motor compartment structure, comprising a side part of the motor compartment, a bottom part extending from the side part toward the vehicle interior, a spring strut receiving part extending upward from the bottom part, and a bracket, which surrounds the corner section formed by the side part, the bottom part and the front part of the spring strut receiving part and to which the motor suspension can be connected. The bracket has a first, a second, a third and a fourth flange along its edge. Each of these flanges is connected to another adjacent flange in an L-shaped manner at a position including at least a pair of opposite corners that are substantially rectangular when viewed from above.

[0004] DE 10 2019 206 041 A1 relates to a front body structure for a two-wheel track vehicle, the front body structure having an A-pillar, an upper wheel house longitudinal beam protruding from the A-pillar in the vehicle longitudinal direction toward the vehicle front, and a lower body longitudinal beam offset in the vehicle interior relative to the upper wheel house longitudinal beam protruding from the A-pillar in the vehicle longitudinal direction toward the vehicle front, wherein a transverse component extends in the vehicle transverse direction, and a spring strut cover is arranged in the inner corner region between the transverse component and the upper wheel house longitudinal beam, a wheel house panel defining the wheel house interior is connected to the spring strut cover in the vehicle longitudinal direction toward the vehicle front and in the vehicle height direction toward the vehicle bottom, the wheel house panel connecting the lower body longitudinal beam to the upper wheel house longitudinal beam, wherein in a frontal collision, in particular a frontal collision with a small lateral overlap, the spring strut cover is loaded with collision forces in the vehicle longitudinal direction. The front body structure has a plate-type traction belt that connects the spring strut cover to the lower body longitudinal beam in a force-transmitting manner. In the event of a frontal impact, the plate-type towing strap provides a load path through which a tensile force acting in opposition to the impact force acts on the spring strut cover.

[0005] WO 2017 / 175585 A1 describes a sheet made of an aluminum alloy, which is stretched or bent to form a first intermediate molded body of a suspension tower. The first intermediate molded body is stretched to form a second intermediate molded body having a shape close to the suspension tower. The second intermediate molded body is formed into a finished shape of the suspension tower. The finished suspension tower is connected to a front longitudinal beam and an upper longitudinal beam.

[0006] DE 10 2013 209 099 A1 describes a spring support for a motor vehicle, comprising a spring strut pot made of a metal material and three shell components made of a fiber composite material. The spring strut pot is joined to the shell components in such a way that a first shell component clamps a bend from the outside of the motor mount to the underside of the support beam, and the spring strut pot is fastened to the first shell component from below with its edge. A second shell component connects the upper side of the support beam, the upper side of the first shell component and the outer upper side of the spring strut pot to one another, and a third shell component is fastened to the inner side of the motor mount and to the upper side of the motor mount and to the inner side of the first shell component and to the inner upper side of the spring strut pot.

[0007] DE 10 2014 015 539 A1 describes a load-bearing component for connecting a spring strut to a vehicle body, which has at least one connecting section for connection to the vehicle body and at least one flange section which is designed for fastening a spring strut receptacle on which the spring strut is mounted. Summary of the invention

[0008] Against the background of the prior art, the purpose of the present disclosure is to propose a device suitable for enriching the prior art.

[0009] This object is achieved by the features of the independent claim. The dependent claims contain a number of optional developments of the disclosure.

[0010] Accordingly, the object is achieved by a spring support for a motor vehicle. The spring support can also be referred to as a spring strut receptacle or a spring strut dome.

[0011] The spring support comprises a lower flange in the height direction of the motor vehicle for fastening the spring support to a motor mount which extends in the longitudinal direction of the motor vehicle in a front compartment structure of the motor vehicle.

[0012] The spring support comprises an upper flange in the vehicle height direction for fastening the spring support to a longitudinal beam extending in the vehicle longitudinal direction in a front compartment structure of the vehicle and arranged above the motor bracket in the vehicle height direction.

[0013] For example, a spot welding method can be used to connect the spring support to the body component.

[0014] The spring support comprises a base connecting the lower flange and the upper flange for accommodating a spring strut for a front wheel of a motor vehicle.

[0015] The base body extends in at least one partial region in the longitudinal direction of the vehicle, starting from the lower flange, in the vehicle width direction, upwardly in the vehicle height direction without being bent.

[0016] In other words, the partial region of the base body and the lower flange may be arranged on the same plane such that a normal vector perpendicular to the partial region extends parallel to a normal vector perpendicular to the lower flange.

[0017] That is, the flange surface facing the motor mount is drawn into the free spring support surface, referred to as the base body. This ensures an optimal load transfer. It is conceivable to determine the best possible implementation of the shape at this point and implement it in the design using a generative development method of numerical free form optimization.

[0018] Thus, by avoiding bending of the spring support in the transition area between the lower flange and the base body, functional advantages can be achieved in the structural design, for example in terms of operating strength and driving dynamics. In contrast to conventional front body structures, no additional sheet metal structures (so-called panels) are used here to achieve this functional improvement. In particular, the service life and rigidity can be increased by the proposed design of the spring support, with this being done essentially in a weight-neutral manner.

[0019] Possible improvements to the above-mentioned spring support are described in detail below.

[0020] The spring support can be designed as a sheet metal component. It is conceivable that the spring support is designed as a two-part sheet metal component.

[0021] The sheet metal component can have a wall thickness of between 0.7 mm and 3.0 mm, optionally 1.6 mm, at least in the region of the base body. In addition to the rigidity requirements, requirements for (vibration) acoustic properties can thus also be met.

[0022] The sub-region is designed to be U-shaped. That is to say, the sub-region tapers from bottom to top, wherein this can be done without forming edges.

[0023] The base body can extend from the U-shaped partial area upward in the vehicle height direction and outward in the vehicle width direction in a dome-shaped manner toward the upper flange. As a result, the base body can accommodate the spring support in the dome-shaped area (which is open outward in the vehicle width direction) and surround the spring support at the front and rear in the vehicle longitudinal direction and at the inside in the vehicle width direction. This dome-shaped area can be designed in a U-shaped cross section in a plane, the vehicle height direction being perpendicular to this plane.

[0024] The partial region and the lower flange can be arranged substantially in a plane spanned by the longitudinal direction of the motor vehicle and the height direction of the motor vehicle. In other words, the motor vehicle width direction can be perpendicular not only to the flange but also to the partial region.

[0025] The partial region can be arranged completely above the motor mount in the vertical direction of the motor vehicle.

[0026] In addition, a front compartment structure of a motor vehicle is provided, which comprises the above-mentioned spring support, a motor bracket extending in the longitudinal direction of the motor vehicle, and a longitudinal beam extending in the longitudinal direction of the motor vehicle, wherein the lower flange of the spring support is fastened to the motor bracket, the longitudinal beam is arranged above the motor bracket in the height direction of the motor vehicle, and the upper flange of the spring support is fastened to the longitudinal beam.

[0027] The spring support can have a spring support upper part for fastening a spring strut for a front wheel of a motor vehicle, which spring support upper part terminates the spring support upward in the vertical direction of the motor vehicle. This component can also be referred to as a hood support.

[0028] The above description concerning the spring support also applies mutatis mutandis to the front compartment structure and vice versa.

[0029] Furthermore, a motor vehicle having the above-mentioned front compartment structure is provided.

[0030] The motor vehicle can have a drive assembly fastened to the motor mount, which drive assembly can optionally have an internal combustion engine, an electric motor and / or a fuel cell.

[0031] The motor vehicle may be a passenger vehicle, in particular a car and / or a commercial vehicle.

[0032] The above description regarding the spring support and the front compartment structure also applies mutatis mutandis to the motor vehicle and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following reference Figure 1 and 2 An implementation scheme is described.

[0034] Figure 1 A front compartment structure of a motor vehicle with a spring support according to the disclosure is shown schematically and in perspective, and

[0035] Figure 2 The spring support is shown schematically and in perspective alone. DETAILED DESCRIPTION

[0036] exist Figure 1 and Figure 2, a Cartesian coordinate system is shown, whose X-axis extends along the longitudinal direction X of the vehicle, whose Y-axis extends along the width direction Y of the vehicle and whose Z-axis extends along the height direction of the vehicle. All axes respectively enclose an angle of 90° with respect to one another. The longitudinal direction X and the width direction Y of the vehicle define an essentially horizontal plane, to which the height direction Z of the vehicle, which runs essentially parallel to the vertical, is perpendicular. The longitudinal direction X of the vehicle extends from the front of the vehicle (not shown in any more detail) to the rear and is therefore opposite to its main direction of travel.

[0037] In addition to the spring support 2 , the front body structure 1 has a motor mount 3 extending in the front body structure 1 in the longitudinal direction X of the vehicle and a longitudinal beam 4 also extending in the front body structure 1 in the longitudinal direction X of the vehicle and arranged in the height direction Z of the vehicle above the motor mount 3 .

[0038] If especially by Figure 2 As can be seen, the spring support 2 includes a lower flange 21 in the vehicle height direction Z for fastening the spring support 2 to the motor bracket 3; and the spring support includes an upper flange 22 in the vehicle height direction Z for fastening the spring support 2 to the longitudinal beam 4.

[0039] exist Figure 1 In the state shown in FIG. 2 , the spring support is connected or fastened to the two supports 3 , 4 via corresponding flanges 21 , 22 .

[0040] The spring support 2, which is designed as a sheet metal component, further comprises a base 23 connecting the lower and upper flanges 21, 22, which serves to accommodate a spring strut (not shown) for a front wheel (also not shown) of the motor vehicle, wherein the spring support has a wall thickness of between 0.7 mm and 3.0 mm, optionally 1.6 mm. A spring support upper part 25 for fastening the spring strut closes the spring support upward in the height direction of the motor vehicle.

[0041] If not only Figure 1 And by Figure 2It can be seen that the base body 23 extends upward in the vehicle height direction Z from the lower flange 21 in the partial region 24 in the vehicle longitudinal direction X without bending in the vehicle width direction Y, that is, the partial region 24 and the lower flange 21 are basically arranged in a plane spanned by the vehicle longitudinal direction X and the vehicle height direction Z. The partial region 24 is arranged completely above the motor support 3 as an extension of the lower flange 21. As seen in the vehicle width direction Y, the partial region 24 extending the lower flange upward into the free surface of the base body 23 is configured in a U-shape. Starting from the U-shaped partial region 24, the base body 23 extends upward in the vehicle height direction Z and outward in the vehicle width direction Y toward the upper flange 22 and toward the spring support upper part 25. As seen from above in the vehicle height direction Z, the spring support 2 therefore has a substantially upwardly expanding U-shaped cross section in the region above the partial region 24.

[0042] As already described at the outset, the surface of the lower flange 21 is drawn into the free spring support surface or base surface 23 by means of this part area 24, which is designed to be variable in size. This ensures an optimal load transfer. The optimal realization of the shape at this point is determined and implemented in the design by means of a generative development method of numerical free form optimization. Reference numerals list

[0043] 1Front compartment structure

[0044] 2 Spring support

[0045] 21 Lower flange

[0046] 22 Upper flange

[0047] 23 Matrix

[0048] 24 Partial area

[0049] 25 Spring support upper part

[0050] 3 motor longitudinal beam

[0051] 4 Upper longitudinal beam

[0052] X Longitudinal direction of vehicle

[0053] Y Vehicle width direction

[0054] Z vehicle height direction

Claims

1. A spring support (2) for a motor vehicle, wherein: The spring support member (2) comprises: - a lower flange (21) in the vehicle height direction (Z) for fastening the spring support (2) to a motor support (3), the motor support extending in the vehicle longitudinal direction (X) in the front compartment structure (1) of the vehicle, - an upper flange (22) in the vehicle height direction (Z) for fastening the spring support (2) to a longitudinal beam (4), which extends in the vehicle longitudinal direction (X) in the front compartment structure (1) of the vehicle and is arranged above the motor mount (3) in the vehicle height direction (Z), and - a base (23) connecting the lower flange and the upper flange (21, 22) for receiving a spring strut for a front wheel of a motor vehicle, wherein the base body (23) extends in at least one partial region (24) along the longitudinal direction (X) of the vehicle from the lower flange (21) in the vehicle width direction (Y) upwards without being bent, in the vehicle height direction (Z), It is characterized in that The subregion (24) is of U-shaped design, wherein the subregion (24) tapers from bottom to top.

2. The spring support (2) according to claim 1, characterized in that: The spring support (2) is embodied as a sheet metal component.

3. The spring support (2) according to claim 2, characterized in that: The sheet metal component has, at least in the region of the base body (23), a wall thickness of between 0.7 mm and 3.0 mm, optionally 1.6 mm.

4. The spring support (2) according to any one of claims 1 to 3, characterized in that The base body (23) extends from the U-shaped partial region (24) upward in the vehicle height direction (Z) and outward in the vehicle width direction (Y) in a dome-shaped manner toward the upper flange (22).

5. The spring support (2) according to any one of claims 1 to 4, characterized in that The partial region (24) and the lower flange (21) are arranged substantially in a plane spanned by the longitudinal direction (X) of the vehicle and the height direction (Z) of the vehicle.

6. The spring support (2) according to any one of claims 1 to 5, characterized in that The partial region (24) is arranged completely above the motor mount (3) in the height direction (Z) of the motor vehicle.

7. A front compartment structure (1) of a motor vehicle, characterized in that: The front compartment structure (1) comprises: - a spring support (2) according to any one of claims 1 to 6, - a motor support (3) extending in the longitudinal direction (X) of the motor vehicle, to which the lower flange (21) of the spring support (2) is fastened, and - a longitudinal beam (4) extending in the longitudinal direction (X) of the vehicle, said longitudinal beam being arranged above the motor mount (3) in the height direction (Z) of the vehicle and to which the upper flange (22) of the spring support (2) is fastened.

8. The front compartment structure (1) according to claim 7, characterized in that: The spring support (2) has a spring support upper part (25) for fastening a spring strut for a front wheel of a motor vehicle, the spring support upper part closing the spring support (2) upward in a height direction (Z) of the motor vehicle.

9. A motor vehicle, characterized in that: The motor vehicle has a front compartment structure (1) according to claim 7 or 8.

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