Subframe, equipment support system and vehicle for a motor vehicle

Abstract

The invention relates to a subframe (10) for a motor vehicle, having a first connection point (12) and a second connection point for connection to a vehicle body (14), and having at least one sleeve (18) for accommodating a device support (38) for supporting a drive device, wherein the first connection point (12) is spaced apart from the second connection point, wherein the connection points are connected to one another in the transverse direction of the vehicle body (14) by a connecting element.

Description

Technical Field

[0001] The present invention relates to a subframe for a motor vehicle having a first connection point and a second connection point for connection to the vehicle body, and at least one sleeve for accommodating a device support for supporting a drive unit, wherein the first connection point and the second connection point are spaced apart, and wherein the connection points are connected to each other in the transverse direction of the vehicle by connecting elements.

[0002] Furthermore, the present invention also relates to an equipment support system for vehicles.

[0003] Furthermore, the present invention also relates to a vehicle having at least one electrical device and a device support system. Background Technology

[0004] Various designs of subframes are known in the prior art for the front or rear regions of motor vehicles. The subframe is used to support drive equipment, wheel suspension elements, or similar components. Typically, the equipment is connected to the subframe via damping supports, where the subframe is rigidly connected to the vehicle body. For this purpose, connection points are provided on the left and right sides of the vehicle body, to which the subframe is fixed. Due to the function of the subframe, such as for holding drive equipment, it needs to be designed with corresponding torsional stiffness.

[0005] One drawback of the aforementioned subframes is that these structures are designed only for specialized equipment. Due to the significant differences in geometry and support between different equipment, it is difficult to design a uniform equipment support for different engines.

[0006] In this case, the equipment support device known from the prior art, in which an additional equipment cable tray is implemented, is necessary as an additional mounting component. This increases the installation cost. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is to provide a subframe for a motor vehicle, an equipment support system, and a vehicle having the equipment support system, wherein significantly different equipment can be installed using only a variation of the subframe without the need for additional mounting parts.

[0008] In this invention, the aforementioned technical problem is first solved by a subframe for a motor vehicle, which is provided with a third connection point and a fourth connection point. The first connection point, the first sleeve, and the third connection point are substantially located on a first line or a first straight line along the longitudinal direction of the vehicle in the installed state, and the second connection point, the second sleeve, and the fourth connection point are substantially located on a second line or a second straight line along the longitudinal direction of the vehicle in the installed state. Alternatively, the first connection point, the first sleeve, and the third connection point are substantially located on a first line along the transverse direction of the vehicle body in the installed state, and the second connection point, the second sleeve, and the fourth connection point are substantially located on a second line along the transverse direction of the vehicle body in the installed state.

[0009] The first advantage of the subframe according to the invention is that, since the sleeve is integrated into the subframe, along with the corresponding reinforcing supports, additional mounting components can be eliminated. This reduces production time because the subframe can be supplied separately along with the press-in equipment supports, rather than using a combination of the subframe, equipment axle bracket, and two supports that must be individually screwed together within the axle pre-assembly scope. Greater freedom in selecting the location of the equipment supports is achieved, for example, through double support on the longitudinal beams of the vehicle body, because with sufficient support, a larger lever arm relative to the original connection point of the subframe on the longitudinal beams does not equate to a disadvantage in terms of the subframe's operational strength.

[0010] Within the scope of this invention, a connection point is understood as a fixed point through which the subframe can be connected to the vehicle body. The connection can be achieved through a conventional screw connection or other common fixing methods.

[0011] The vehicle body comprises frames and beams, which are used to connect individual body parts and can also serve as supports. The subframe's connection points can be supported on the frames and beams. The vehicle body also includes, for example, longitudinal beams, on which the subframe can be fixed.

[0012] The sleeve is preferably designed as a hollow cylinder, into which the support device can be inserted and supported. The equipment support device can be inserted into the sleeve accordingly, allowing the equipment to be connected to the subframe via the equipment support device, wherein the subframe can be fixed to the vehicle body via four connection points.

[0013] Equipment support devices are required on both the right and left sides of the vehicle, so that the first and second sleeves are arranged alternately. One sleeve is located in the right-side region of the vehicle, while the second sleeve is located in the left-side region. The two sleeves and their corresponding connection points are indirectly connected to each other in the lateral direction of the vehicle by connecting elements to form a subframe consisting of multiple components.

[0014] Two connection points and one sleeve are respectively provided on the corresponding sides of the vehicle, namely the right and left sides. The two connection points and one sleeve are respectively located approximately on a line on the left side of the vehicle or body, and the other two connection points and the second sleeve are located approximately on a longitudinal line on the right side of the body.

[0015] Other preferred embodiments of the present invention are constituted by other features described in the dependent claims.

[0016] In a first design of the subframe according to the invention, a first sleeve is arranged between a first connection point and a third connection point, and / or a second sleeve is arranged between a second connection point and a fourth connection point. This means that the two connection points are respectively located outside the corresponding sleeves. The sleeves are fixed to the vehicle body on a lever, which is kept as short as possible to achieve optimal force transmission or optimal support capability, thereby integrating the subframe into the vehicle body accordingly.

[0017] In another advantageous design of the subframe according to the invention, the first connection point, the first sleeve, and the third connection point are interconnected by a reinforcing structure, and / or the second connection point, the second sleeve, and the fourth connection point are interconnected by a reinforcing structure. The reinforcing structure strengthens the subframe's construction. The combination of bending and torsional rigidity ensures that the subframe hardly yields in the sleeve region, achieving a precise connection between the equipment and the subframe. Possible compensation for vibrations caused by these vibrations can be achieved through vibration-damping equipment support devices.

[0018] To improve the stability of the reinforced structure, in another design of the present invention, the reinforced structure is specified to include multiple plate structures. The first plate structure is connected to the first connection point and the first sleeve by welding. The second plate structure is connected to the third connection point and the first sleeve by welding. And / or the third plate structure is connected to the second connection point and the second sleeve by welding. The fourth plate structure is connected to the fourth connection point and the second sleeve by welding.

[0019] Therefore, the connection between the sleeve and the plate used for support and housing is achieved through welding. This fixing method ensures sufficient support for the equipment load during operation. Furthermore, the stress on critical areas of the subframe in terms of operational strength is reduced. Additionally, extra mounting components and therefore screwing points can be eliminated. Another advantage of this invention is the degree of freedom in selecting or determining the location of the equipment support device.

[0020] For more effective support, in another advantageous design of the subframe according to the invention, at least one of the plate structures comprises a plurality of plate elements, and each plate element is individually welded to a first sleeve or a second sleeve. The number of support points on the sleeves is thus increased, and the forces acting on each individual plate element are correspondingly distributed.

[0021] To further enhance flexibility in terms of intended use, in another design of the subframe according to the invention, at least one first engine bearing sleeve and a second engine bearing sleeve are provided. The first engine bearing sleeve is arranged between a first connection point and a third connection point, while the second engine bearing sleeve is arranged between a second connection point and a fourth connection point.

[0022] Depending on the available mounting space and the required screwing direction of the engine bearing, similar to additional supports, such as those on the longitudinal beams of the vehicle body, it is also feasible to have supports directly on the subframe. Therefore, the support is not upwards, but downwards onto the existing subframe geometry, but this is also in the longitudinal direction of the vehicle or body. Thus, the engine bearing can still be screwed in the transverse direction of the vehicle.

[0023] The aforementioned technical problem is also solved by an equipment support system for a vehicle with a body having at least one longitudinal beam. Furthermore, the equipment support system includes a subframe designed according to the invention and corresponding equipment support devices arranged in a first sleeve and a second sleeve. The above description of the subframe according to the invention also applies accordingly to the equipment support system according to the invention.

[0024] The equipment support system can be correspondingly fixed to the vehicle or body. The body involves frames and beams, which are provided for connecting the individual body components, and the subframe connection points can be supported on them.

[0025] In a favorable first design of the equipment support system, the first, second, third, and fourth connection points are fixed, preferably welded, to at least one longitudinal beam of the vehicle body. The connection between the subframe and the vehicle body can also be achieved, for example, by screwing. The subframe can be fixed flat to the longitudinal beam. Furthermore, the fixing can be performed in the direction of gravity, such that the downward force is not primarily a load on the connections on the longitudinal beam.

[0026] In another design of the equipment support system according to the invention, the third and / or fourth connection points are fixed, preferably welded to the vehicle body. The connection can also be achieved, for example, by screwing. It is conceivable that, alternatively to fixing the subframe to the longitudinal beams, the subframe is fixed to other locations on the vehicle body. Therefore, on the one hand, the direction of the supporting force at the connection points can be advantageously influenced for individual cases. On the other hand, narrow installation spaces can be avoided, and advantageous installation locations for connecting the subframe can be found.

[0027] The aforementioned technical problems are also solved by means of transportation, particularly motor vehicles, which have at least one electrical device and an equipment support system, wherein the device is fixed to the means of transportation via the equipment support system. The specified equipment support system is designed according to the invention. The above descriptions regarding the subframe according to the invention and the equipment support system according to the invention also apply accordingly to means of transportation according to the invention.

[0028] The different embodiments of the invention mentioned in this application can be advantageously combined with each other, unless otherwise stated in individual cases. Attached Figure Description

[0029] The invention is described below with reference to the accompanying drawings and embodiments.

[0030] Figure 1 A schematic diagram is shown of a subframe or equipment support system with four connection points on the vehicle body.

[0031] Figure 2 A schematic diagram illustrating an embodiment of the equipment support system according to the invention in a vehicle body having an additional plate structure is shown.

[0032] Figure 3 A schematic diagram of a subframe with an additional engine bearing sleeve is shown. Detailed Implementation

[0033] Figure 1 A subframe 10 for a motor vehicle is shown. The subframe 10 is first fixed to the vehicle body 14 via a first connection point 12. Furthermore, the subframe 10 is fixed via a second connection point, a third connection point 16 (not shown) on the opposite side of the vehicle body 14, and a fourth connection point (not shown) on the opposite side of the vehicle body 14. The vehicle body 14 comprises frames and beams, which are provided for connecting individual vehicle body components and can also serve as supports; the connection points of the subframe 10 can be supported on these supports. Connection points are fixing points through which the subframe 10 can be connected to the vehicle body 14. In this example, the connection is formed by welding. Alternatively, the connection can also be achieved by screwing.

[0034] A first sleeve is arranged between the first connection point 12 and the third connection point 16. On the opposite side of the vehicle body 14, a second sleeve (not shown) is arranged between the second connection point and the fourth connection point. The first sleeve 18 is designed as a hollow cylinder into which a support device can be inserted and supported. The first connection point 12, the first sleeve 18, and the third connection point 16 are located on a first line 20 along the longitudinal direction of the vehicle body 14 in a top view of the vehicle body 14.

[0035] The first connection point 12, the first sleeve 18, and the third connection point 16 are interconnected by a reinforcing structure 22. The reinforcing structure 22 strengthens the construction of the subframe 10. The connection of bending and torsional rigidity ensures that the subframe 10 is virtually non-yielding in the region of the first sleeve 18, achieving a precise fit between the equipment and the vehicle body 14. Possible compensation for vibrations caused by these vibrations can be achieved through vibration-damping equipment supports. The reinforcing structure 22 includes a first plate structure 24, which is connected to the first connection point 12 and the first sleeve 18 via a weld 26. Furthermore, the reinforcing structure 22 has a second plate structure 28, which is connected to the third connection point 16 and the first sleeve 18 via a weld 26.

[0036] The subframe 10 is part of the equipment support system 34. Here, the first connection point 12 and the third connection point 16 are arranged and fixed to the longitudinal beam 36 of the vehicle body 14. The first sleeve 18 is connected to the equipment support device 38. The equipment support device 38 is inserted into the first sleeve 18 such that equipment (not shown) is connected to the subframe 10 via the equipment support device 38, wherein the subframe 10 is correspondingly fixed to the vehicle body 14 via four connection points.

[0037] Figure 2 Showing the basis from another perspective Figure 1 Examples of implementations. Figure 2 As can be seen, the first plate structure 24 of the reinforcing structure 22 includes multiple plate elements 30. This allows for more effective support. Each plate element 30 is individually welded to the first sleeve 18, or the second sleeve on the opposite side of the subframe 10. The number of support points on the first sleeve 18 is thus increased, and the forces acting on each individual plate element 30 are distributed accordingly.

[0038] Figure 3 A further embodiment of the subframe 10 according to the invention is shown as part of an equipment support system 34 for a motor vehicle. A first engine bearing sleeve 32 is provided to further enhance flexibility in terms of intended use. In this drawing, the screwing of the equipment is performed in the longitudinal direction of the vehicle, i.e., in the longitudinal direction of the vehicle body 14, and correspondingly, both the first sleeve 18 and the second sleeve 32 are shown. Figure 3 and Figure 1 and Figure 2 The main difference lies in the direction of rotation of the equipment. Figure 1 and Figure 2 In the diagram, equipment (not shown) is mounted transversely on the vehicle. Correspondingly, the first connection point 12, the first sleeve 18, and the third connection point 16 are located on a line 20 along the longitudinal direction of the vehicle body. Figure 3In this embodiment, the first connection point 16, the first sleeve 18, and the third connection point 16 are located on a line along the transverse direction of the vehicle body 14. Correspondingly, the second connection point, the second sleeve 32, and the fourth connection point are located on a line 20 along the transverse direction of the vehicle body 14. In this embodiment, the reinforcing structure 22 is composed of a single plate element 30.

[0039] List of reference numerals

[0040] 10 subframes

[0041] 12 First Connection Point

[0042] 14. Body

[0043] 16 Third Connection Point

[0044] 18 First Sleeve

[0045] 20 First line

[0046] 22. Reinforced Structure

[0047] 24 First Plate Structure

[0048] 26 Welding Section

[0049] 28 Second Plate Structure

[0050] 30 board components

[0051] 32 Second Sleeve

[0052] 34 Equipment Support System

[0053] 36 Longitudinal beams

[0054] 38. Equipment support device.

Claims

1. A subframe (10) for a motor vehicle, having a first connection point (12) and a second connection point for attachment to a vehicle body (14), It has at least one sleeve for accommodating a device support (38) used to support the drive equipment. in, The first connection point (12) and the second connection point are spaced apart, wherein the connection points are interconnected in the lateral direction of the vehicle body (14) by connecting elements. Its features are, A third connection point (16) and a fourth connection point are provided. The first connection point (12), the first sleeve (18), and the third connection point (16) are substantially located on the first line (20) along the longitudinal direction of the vehicle body (14) in the installed state, and the second connection point, the second sleeve, and the fourth connection point are substantially located on the second line along the longitudinal direction of the vehicle body (14) in the installed state. Alternatively, the first connection point (12), the first sleeve (18), and the third connection point (16) are substantially located on the first line (20) along the transverse direction of the vehicle body (14) in the installed state, and the second connection point, the second sleeve, and the fourth connection point are substantially located on the second line along the transverse direction of the vehicle body (14) in the installed state. The first connection point (12), the first sleeve (18) and the third connection point (16) are interconnected by a reinforcing structure (22), and / or the second connection point, the second sleeve and the fourth connection point are interconnected by a reinforcing structure (22). The reinforcing structure (22) includes multiple plate structures. The first plate structure (24) is connected to the first connection point (12) and the first sleeve (18) by a welding part (26), and the second plate structure (28) is connected to the third connection point (16) and the first sleeve (18) by a welding part (26).

2. The subframe (10) according to claim 1, characterized in that, The first sleeve (18) is arranged between the first connection point (12) and the third connection point (16), and / or the second sleeve is arranged between the second connection point and the fourth connection point.

3. The subframe (10) according to claim 1, characterized in that, The third plate structure is connected to the second connection point and the second sleeve via a welded part, and the fourth plate structure is connected to the fourth connection point and the second sleeve via a welded part.

4. The subframe (10) according to claim 3, characterized in that, At least one of the plate structures includes a plurality of plate elements (30), and each plate element (30) is individually welded to a first sleeve (18) or a second sleeve.

5. The subframe (10) according to any one of claims 1 to 4, characterized in that, The assembly includes at least one first engine bearing sleeve and a second engine bearing sleeve, with the first engine bearing sleeve arranged between the first connection point (12) and the third connection point (16), and the second engine bearing sleeve arranged between the second connection point and the fourth connection point.

6. An equipment support system (34) for a vehicle having a body (14) having at least one longitudinal beam (36), a subframe (10) according to any one of claims 1 to 5, and equipment support devices (38) respectively arranged in a first sleeve (18) and a second sleeve.

7. The equipment support system (34) according to claim 6, characterized in that, The first connection point, the second connection point, the third connection point and the fourth connection point are fixed to at least one longitudinal beam (36) of the vehicle body (14).

8. The equipment support system (34) according to claim 7, characterized in that, The first connection point, the second connection point, the third connection point and the fourth connection point are welded or screwed onto at least one longitudinal beam (36) of the vehicle body (14).

9. The equipment support system (34) according to claim 6, characterized in that, The third connection point (16) and / or the fourth connection point are fixed to the vehicle body (14).

10. The equipment support system (34) according to claim 9, characterized in that, The third connection point (16) and / or the fourth connection point are welded or screwed onto the vehicle body (14).

11. A means of transport having at least one electrical device and an equipment support system (34) according to any one of claims 6 to 10, wherein, The device is fixed to the vehicle by a device support system (34).

12. The means of transport according to claim 11, characterized in that, The means of transportation is a motor vehicle.

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