Axle support device for a motor vehicle
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- DAIMLER TRUCK AG
- Filing Date
- 2024-07-04
- Publication Date
- 2026-05-20
AI Technical Summary
Existing axle support devices for motor vehicles, particularly electrically powered commercial vehicles, face challenges in adapting to higher drive torques and loads due to limited installation space and are not easily adaptable to different types of vehicles, limiting their versatility and effectiveness.
The design features a dual axle carrier housing system with a connecting arrangement that decouples the drive housing function from the support structure, allowing for flexible adaptation to various load capacities, drive powers, and track widths through curved connecting elements, enabling the use of different drive components and accommodating various vehicle types without reducing the drive housing space.
This solution enhances the axle support device's versatility and adaptability, allowing it to handle higher loads and torques while maintaining a compact design, thus improving its suitability for a range of motor vehicles without the need for complex modifications.
Smart Images
Figure EP2024068800_16012025_PF_FP_ABST
Abstract
Description
[0001] Axle support device for a motor vehicle
[0002] The invention relates to an axle support device for a motor vehicle, in particular a commercial vehicle, in particular an electrically powered commercial vehicle, in particular an electrically powered truck.
[0003] Such an axle support device is known from DE 3402 272 A1. The axle support device has a first axle support housing, a second axle support housing, and a support part connecting the two axle support housings—also referred to as an axle support housing connection arrangement. The support part fulfills several functions: Firstly, the support part forms a drive housing in which a differential gear of the motor vehicle is arranged. The maximum size of the differential gear is limited by the size of a cavity in the support part designed as a drive housing. Secondly, the support part is designed as a supporting structure of the axle support device and absorbs the forces that occur, in particular tensile, compressive, and torsional forces. The use of electric motors in commercial vehicles enables higher drive torques to be generated. Therefore, it is necessary to adapt the differential gear to the higher torques, in particular to reinforce it.Due to the limited cavity in the support part designed as a drive housing, this is difficult to implement. Furthermore, the support part must also be adapted to the higher loads, in particular, reinforced, which is difficult to achieve due to the limited installation space beneath the vehicle, particularly due to the presence of electric drive components. Furthermore, the axle support device is designed only for a specific vehicle type, specifically for the vehicle's load capacity, drive power, and track width, and therefore cannot be readily used with other vehicle types.
[0004] The invention is therefore based on the object of providing an axle support device for a motor vehicle, wherein the aforementioned disadvantages are reduced, preferably eliminated. This object is achieved by providing the present technical teaching, in particular the teaching of the independent claims and the preferred embodiments disclosed in the dependent claims and the description.
[0005] The object is achieved in particular by providing an axle support device, in particular a rear axle support device, for a motor vehicle, in particular a commercial vehicle, in particular an electrically powered commercial vehicle, in particular an electrically powered truck. The axle support device has a first axle support housing, a second axle support housing different from the first axle support housing, and an axle support housing connection arrangement, in particular an axle support housing bridge. The first axle support housing has a first axle bearing device for a drive element, in particular a drive shaft, in particular for driving wheels of the motor vehicle. The second axle support housing has a second axle bearing device for the drive element. The first axle bearing device and the second axle bearing device are arranged in alignment with one another along a bearing axis.The axle carrier housing connection arrangement, in particular the axle carrier housing bridge, is connected, in particular detachably or permanently, to the first axle carrier housing and the second axle carrier housing. The axle carrier housing connection arrangement has two first connecting elements, in particular curved in some regions, in particular doubly curved in some regions, in particular curved in two different regions, which each extend from the first axle carrier housing to the second axle carrier housing, are spaced apart from one another in some regions, and delimit, in particular define, in particular partially enclose, a drive housing receiving space between them, in particular arranged in the bearing axis direction between the first axle carrier housing and the second axle carrier housing.The axle carrier housing connection arrangement is designed such that a drive housing, in particular a differential gear housing, in particular of an electric drive, can be arranged in the drive housing receiving space, and that the drive element emerging from the drive housing on both sides can pass through the first axle bearing device and the second axle bearing device to drive the motor vehicle.
[0006] Advantageously, in particular, a drive housing function and a supporting structure function of the axle carrier device are decoupled from one another. In particular, the supporting structure function is assumed by the axle carrier housing connection arrangement, in particular by the two first connecting elements, as well as the first axle carrier housing and the second axle carrier housing. Advantageously, the axle carrier housing connection arrangement can be flexibly adapted to different load-bearing capacities, drive powers, and track widths of different motor vehicles. This is possible in particular due to the curved, in particular doubly curved, first connecting elements, and this without reducing the drive housing receiving space. Advantageously, in particular, the drive housing function is realized by means of a separate drive housing, which can be arranged in the drive housing receiving space.Advantageously, various drive components, in particular a differential gear designed for a specific drive power, and electric drive components, in particular an electric drive and a transmission for the electric drive, can be arranged in the drive housing receiving space. Advantageously, the axle carrier device can be used for various motor vehicle types, in which case only the axle carrier housing connection arrangement, in particular its two connecting elements, need to be adapted to the different load-bearing capacities, drive powers, and track widths. In particular, the axle carrier housing connection arrangement, in particular the two first connecting elements, forms a first module. In particular, the first axle carrier housing and the second axle carrier housing form a second module.
[0007] In particular, the axle support device is designed as a rigid axle.
[0008] In the context of the present technical teaching, a connecting element is understood to be a load-bearing element, in particular a connecting support element. Such a connecting support element has a longitudinal extension and a profile oriented transversely to the longitudinal extension—in a transverse extension. The transverse extension is, in particular, smaller than the longitudinal extension.
[0009] In particular, the first axle carrier housing and the second axle carrier housing each have a spring saddle. In particular, the spring saddle is designed and configured to accommodate, in particular to support, a chassis spring and / or a chassis damper of the motor vehicle.
[0010] In particular, the first axle carrier housing and the second axle carrier housing each have a brake device connection. In particular, the brake device connection is designed and configured to accommodate a brake device. In particular, the brake device is attached to the brake device connection.
[0011] In particular, the first axle carrier housing and the second axle carrier housing each have a wheel hub. In particular, the two wheel hubs are each designed and configured to accommodate a wheel, in particular a dual-tire wheel. In particular, a first wheel hub of the two wheel hubs is rotatably mounted relative to the first axle carrier housing by means of the first axle bearing device. In particular, a second wheel hub of the two wheel hubs is rotatably mounted relative to the second axle carrier housing by means of the second axle bearing device.
[0012] In particular, the two first connecting elements are each formed in one piece, in particular from the same material. This means, in particular, that the two first connecting elements are not each assembled, plugged, or screwed together from a plurality of partial connecting elements, in particular hollow profile elements. In particular, the connecting elements can each be produced from a single piece, for example by forming. Alternatively, the two first connecting elements can each be joined together from a plurality of partial connecting elements, in particular hollow profile elements, in particular in a non-detachable manner, in particular joined by a material bond, in particular welded together.
[0013] According to a further development of the invention, the axle carrier housing connection arrangement is arranged, in particular in the bearing axis direction, between the first axle carrier housing and the second axle carrier housing and has at least two first carriers as the first connecting elements. The at least two first carriers each have a first carrier end and a second carrier end opposite the first carrier end. The at least two first carriers are fastened to the first axle carrier housing with the respective first carrier end. The at least two first carriers are fastened to the second axle carrier housing with the respective second carrier end. In this way, the two first carriers are advantageously fastened to the first axle carrier housing and the second axle carrier housing in a particularly simple manner.
[0014] In one embodiment, at least one first connecting element is designed as a first carrier; in particular, all first connecting elements are each designed as a first carrier. However, it is also possible for at least one of the first connecting elements to be formed from a plurality of first carriers, or for a first carrier to be formed from a plurality of first carrier elements.
[0015] In the context of the present technical teaching, a beam is understood to mean, in particular, a load-bearing component, in particular a support component. Such a beam component has a longitudinal extent and a profile oriented transversely to the longitudinal extent - in a transverse extent - also referred to as a beam profile. The transverse extent is in particular smaller than the longitudinal extent. In particular, such a beam can be a T-beam, I-beam, also referred to as a double-T-beam, U-beam, Z-beam or L-beam. In one embodiment, the two first beams are fastened to one another by their respective first beam ends and / or by their respective second beam ends, in particular by welding, screwing and / or riveting.
[0016] In one embodiment, the axle support device comprises exactly two first supports as the at least two first supports. In another embodiment, the axle support device comprises exactly four first supports as the at least two first supports.
[0017] Preferably, at least one first support of the at least two first supports is fastened, in particular welded, screwed, and / or riveted, with a support end selected from the first support end and the second support end, to an end face of the axle support housing assigned to the support end, said end facing the drive housing receiving space. Alternatively or additionally, it is preferably provided that at least one first support of the at least two first supports is fastened, in particular welded, screwed, riveted, and / or clamped, with a support end selected from the first support end and the second support end, to at least one lateral surface, in particular encompassing the bearing axle, of the axle support housing assigned to the support end.
[0018] In one embodiment, the at least two first supports are fastened to the first axle support housing by means of a first clamping arrangement and to the second axle support housing by means of a second clamping arrangement. In particular, the clamping arrangements each have a first clamping element, in particular referred to as a counter bearing, and a second clamping element, in particular referred to as a spring bearing block. In particular, the spring bearing block is designed as the spring saddle and is configured to receive, in particular to mount, a chassis spring and / or a chassis damper of the motor vehicle. In particular, the at least two first supports have the first clamping element at the selected support end or are designed as the first clamping element.In particular, the first clamping element—when the axle support device is installed as intended in a motor vehicle—is arranged on an underside of the axle support housing, while the second clamping element is arranged on an upper side of the axle support housing. In particular, the clamping arrangements form a third module.
[0019] According to a further development of the invention, the axle carrier housing connection arrangement is arranged, in particular in the bearing axis direction, between the first axle carrier housing and the second axle carrier housing and has at least two first carriers as the first connecting elements. The at least two first carriers each have a first carrier end and a second carrier end opposite the first carrier end. Two identical carrier ends, selected from the first carrier ends and the second carrier ends, are designed such that they form an axle carrier housing assigned to the carrier ends, selected from the first axle carrier housing and the second axle carrier housing. In this way, the axle carrier device has a particularly simple and cost-effective design.
[0020] According to a further development of the invention, it is provided that a first carrier distance between the first carrier and the bearing axis, measured at a measuring carrier end, selected from the first carrier end and the second carrier end of a first first carrier of the at least two first carriers, perpendicular to the bearing axis, is smaller than a second carrier distance between the first carrier and the bearing axis, measured at an imaginary measuring point arranged along the bearing axis between the first axle carrier housing and the second axle carrier housing, in particular in a carrier longitudinal center of the first first carrier, in particular at the center point, perpendicular to the bearing axis. The first first carrier is curved in some regions between the measuring carrier end and the imaginary center point, in particular doubly curved.
[0021] In particular, the at least two first supports are arranged at least partially below, in particular diagonally below, the bearing axis when the axle support device is installed as intended in a motor vehicle. In particular, a first support of the at least two first supports is arranged at the front below the bearing axis in the direction of travel of the motor vehicle. In particular, a second support of the at least two first supports is arranged at the rear below the bearing axis in the direction of travel of the motor vehicle.
[0022] In particular, the at least two first supports bulge downwards, in particular diagonally downwards, in particular in the direction of a roadway, in particular diagonally in the direction of the roadway on which the motor vehicle is located.
[0023] According to a further development of the invention, the axle carrier housing connection arrangement additionally comprises at least one second carrier, which in particular has two opposing carrier ends. The at least one second carrier is connected, in particular welded, screwed and / or riveted, in particular by means of the two carrier ends, to the first axle carrier housing and to the second axle carrier housing and / or to at least one first carrier of the at least two first carriers. In particular, the second carrier is formed in one piece, in particular from the same material. This means in particular that the second carrier is not composed of a plurality of second carrier elements, in particular assembled, plugged together or screwed together. In particular, the second carrier can be produced from one piece, for example by forming.Alternatively, the second carrier can be made up of a plurality of second carrier elements, in particular non-detachably joined to one another, in particular joined by a material bond, in particular welded to one another.
[0024] In one embodiment, the axle carrier device has exactly one second carrier as the at least one second carrier.
[0025] In particular, the at least one second support—when the axle support device is installed as intended in a motor vehicle—is arranged at least partially above the bearing axle. In particular, the at least one second support bulges upwards, in particular straight upwards, in particular toward the upper side of the motor vehicle.
[0026] In one embodiment, the at least one second carrier has the second clamping element, in particular the spring bearing block, at its carrier ends or is designed as the second clamping element, in particular as the spring bearing block.
[0027] According to a further development of the invention, the at least one second support has a stabilizing connection. Alternatively or additionally, the at least one second support is connected, in particular welded, screwed, and / or riveted, to the at least one first support of the at least two first supports.
[0028] Alternatively or additionally, it is provided that the at least one second carrier is connected, in particular welded, screwed and / or riveted, to at least one first carrier of the at least two first carriers by means of at least one third carrier.
[0029] In particular, the at least one third carrier is arranged between the first axle carrier housing and the second axle carrier housing, in particular in a carrier longitudinal center of a first carrier of the at least two first carriers.
[0030] In particular, the stabilizing connection is designed and configured to be connected to at least one stabilizing element, in particular to receive, in particular to mount, in particular to pivotally mount the at least one stabilizing element. In particular, the at least one stabilizing element is designed as a control arm, in particular a longitudinal and / or transverse control arm. In particular, the at least one stabilizing element has a first control arm connection and a second control arm connection, optionally a third control arm connection. In particular, the first control arm connection is connected to the stabilizing connection, in particular is received by the stabilizing connection, in particular is mounted on the stabilizing connection, in particular is pivotally mounted.In particular, the second handlebar connection and optionally the third handlebar connection are connected to a body of the motor vehicle, in particular received by the body, in particular mounted on the body, in particular pivotably mounted. In particular, the at least one stabilizing element is designed and configured to be compressed and expanded in one direction, in particular such that a distance between the first handlebar connection and / or the second handlebar connection and / or the third handlebar connection is changed, in particular increased or decreased. In particular, the at least one stabilizing element comprises a damper device and / or a spring device.
[0031] According to a further development of the invention, the axle support device further comprises the drive housing. The drive housing is arranged in the drive housing receiving space. The drive housing is connected, in particular welded, screwed, and / or riveted, to the at least two first supports and / or to the first axle support housing and / or to the second axle support housing. In particular, the drive housing is connected, in particular welded, screwed, and / or riveted, to the at least one second support.
[0032] In particular, the at least two first supports and the drive housing have corresponding first recesses and first protrusions, wherein the drive housing is mounted on the at least two first supports in such a way that the first recesses and the first protrusions form a positive connection between the at least two first supports and the drive housing. In particular, this advantageously increases the torsional strength of the axle support housing.
[0033] In particular, the at least one second support and the drive housing have corresponding second recesses and second protrusions, wherein the drive housing is arranged on the at least one second support such that the second recesses and the second protrusions form a positive connection between the at least one second support and the drive housing. In particular, this advantageously further increases the torsional strength of the axle support housing. According to a development of the invention, it is provided that the drive housing has a stabilizing connection. Alternatively or additionally, it is provided that the drive housing has a damping device. In particular, the damping device is designed to dampen a drive device arranged in the drive housing.
[0034] The previous description concerning the stabilization connection of the at least one second carrier applies accordingly to the stabilization connection of the drive housing.
[0035] According to a further development of the invention, the axle carrier housing connection arrangement comprises a stiffening cover element. The stiffening cover element is connected to the at least two first supports, in particular by welding, screwing, and / or riveting. The torsional strength of the axle carrier device can advantageously be further increased by means of the stiffening cover element.
[0036] In particular, in one embodiment, the drive housing is a closed housing. In another embodiment, the drive housing is a drive housing cover that is open on one side, particularly—when the axle support device is installed as intended in a motor vehicle—at the bottom, with the open side being covered by the stiffening cover element. In particular, the drive housing cover and the stiffening cover element form a closed housing.
[0037] According to a further development of the invention, it is provided that a support selected from the two first supports, the at least one second support and the at least one third support has a profile selected from a group consisting of: a polygon, a rectangle, a square, a circle, an oval, a T-profile, a U-profile, a Z-profile, an L-profile and a double-T-profile.
[0038] The invention is explained in more detail below with reference to the drawings, which show:
[0039] Fig. 1 is a schematic representation of a first embodiment of an axle support device in a first view,
[0040] Fig. 2 is a schematic representation of the first embodiment of the axle support device in a second view,
[0041] Fig. 3 is a schematic representation of the first embodiment of the axle carrier device in a third view and Fig. 4 is a schematic representation of the first embodiment of the axle carrier device with the drive element shown.
[0042] Figure 1 shows a schematic representation of a first embodiment of an axle support device 1 in a first - isometric - view for a motor vehicle, not shown, in particular a commercial vehicle, in particular an electrically powered commercial vehicle, in particular an electrically powered truck.
[0043] The axle carrier device 1 has a first axle carrier housing 3.1, a second axle carrier housing 3.2 different from the first axle carrier housing 3.1, and an axle carrier housing connection arrangement 7, in particular an axle carrier housing bridge. The first axle carrier housing 3.1 has a first axle bearing device 9.1 for a drive element 33 (not shown here with reference to Figure 4), in particular a drive shaft, in particular for driving wheels of the motor vehicle. The second axle carrier housing 3.2 has a second axle bearing device 9.2 for the drive element 33. The first axle bearing device 9.1 and the second axle bearing device 9.2 are arranged in alignment with one another along a bearing axis 13 shown in dashed lines. The axle carrier housing connection arrangement 7, in particular axle carrier housing bridge, is connected to the first axle carrier housing 3.1 and the second axle carrier housing 3.2, in particular detachably or non-detachably.The axle carrier housing connection arrangement 7 has two first connecting elements 15, which are in particular curved in some regions, in particular doubly curved in some regions, in particular curved in two different regions, which each extend from the first axle carrier housing 3.1 to the second axle carrier housing 3.2, are spaced apart from one another in some regions - shown by the arrow A - and between them delimit, in particular define, in particular enclose in some regions a drive housing receiving space 17 shown in dashed lines, which is arranged in particular in the bearing axis direction between the first axle carrier housing 3.1 and the second axle carrier housing 3.2.The axle carrier housing connection arrangement 7 is designed such that a drive housing (not shown here), in particular a differential gear housing, in particular of an electric drive, can be arranged in the drive housing receiving space 17, and that the drive element 33 (not shown here) emerging from the drive housing on both sides can reach through the first axle bearing device 9.1 and the second axle bearing device 9.2 to drive the motor vehicle.
[0044] In particular, the first axle carrier housing 3.1 and the second axle carrier housing 3.2 each have a spring saddle 19. In particular, the spring saddle 19 is designed and configured to receive, in particular to support, a chassis spring and / or a chassis damper (not shown here) of the motor vehicle.
[0045] In particular, the first axle carrier housing 3.1 and the second axle carrier housing 3.2 each have a brake device connection 21. In particular, the brake device connection 21 is designed and configured to accommodate a brake device (not shown here).
[0046] In particular, the first axle carrier housing 3.1 and the second axle carrier housing 3.2 each have a wheel hub 23. In particular, the two wheel hubs 23 are each designed and configured to accommodate a wheel (not shown here), in particular a dual-tire wheel. In particular, a first wheel hub 23.1 of the two wheel hubs 23 is rotatably mounted relative to the first axle carrier housing 3.1 by means of the first axle bearing device 9.1.
[0047] In particular, a second wheel hub 23.2 of the two wheel hubs 23 is rotatably mounted relative to the second axle carrier housing 3.2 by means of the second axle bearing device 9.2.
[0048] In this embodiment, the two first connecting elements 15 are each made up of two partial connecting elements 15.1, 15.2, which are joined in a material-to-material manner, in particular welded.
[0049] In this embodiment, it is provided that the axle carrier housing connection arrangement 7 is arranged, in particular in the bearing axis direction, between the first axle carrier housing 3.1 and the second axle carrier housing 3.2 and has at least two first carriers 25 as the first connecting elements 15. The at least two first carriers 25 each have a first carrier end 27.1 and a second carrier end 27.2 opposite the first carrier end 27.1. The at least two first carriers 25 are fastened to the first axle carrier housing 3.1 by the respective first carrier end 27.1. The at least two first carriers 25 are fastened to the second axle carrier housing 3.2 by the respective second carrier end 27.2.
[0050] In this embodiment, the axle support device 1 has exactly two first supports 25 as the at least two first supports 25.
[0051] Preferably, at least one first support 25—here, both first supports 25—of the at least two first supports 25 is fastened, in particular welded, screwed, and / or riveted, to a support end 27, selected from the first support end 27.1 and the second support end 1.1, on an end face 29 of the axle support housing 3 assigned to the support end 27, facing the drive housing receiving space 17. A second view along arrow B is shown in Figure 2.
[0052] Figure 2 shows a schematic representation of the first embodiment of the axle support device 1 in a second view along the arrow B in Figure 1.
[0053] The second view corresponds to a view—when the axle support device 1 is properly installed in the motor vehicle—in the direction of travel of the motor vehicle. In another embodiment, the second view corresponds to a view opposite to the direction of travel of the motor vehicle.
[0054] Identical and functionally equivalent elements are provided with the same reference symbols in all figures, so that reference is made to the preceding description in each case.
[0055] In this embodiment, it is provided that a first carrier distance - arrow C - measured at a measuring carrier end 27.3, selected from the first carrier end 27.1 and the second carrier end 27.2 of a first first carrier 25.1 of the at least two first carriers 25, perpendicular to the bearing axis 13 between the first first carrier 25.1 and the bearing axis 13 is smaller than a second carrier distance - arrow D - measured at an imaginary measuring point arranged along the bearing axis 13 between the first axle carrier housing 3.1 and the second axle carrier housing 3.2, in particular in a carrier longitudinal center of the first first carrier 25.1, in particular at the center point 31, perpendicular to the bearing axis 13 between the first first carrier 25.1 and the bearing axis 13. The first first carrier 25.1 is curved in regions between the measuring carrier end 27 and the imaginary center point 31.
[0056] A third - side - view along the arrow E is shown in Figure 3.
[0057] Figure 3 shows a schematic representation of the first embodiment of the axle support device 1 in a third - side - view along the arrow E in Figure 2.
[0058] The third view corresponds to a view in the direction of the bearing axis 13.
[0059] In this embodiment, the at least two first supports 25 are arranged - when the axle support device 1 is installed as intended in the motor vehicle - at least partially below, in particular diagonally below, the bearing axle 13. In particular, a second first support 25.2 of the at least two first supports 25 is arranged - in the direction of travel of the motor vehicle - at the front below - represented by the arrow F - the bearing axle 13. In particular, the first first support 25.1 of the at least two first supports 25 is arranged - in the direction of travel of the motor vehicle - at the rear below - represented by the arrow G - the bearing axle 13. In particular, the at least two first supports 25 bulge downwards, in particular diagonally downwards, in particular in the direction of a roadway 26 represented by a line, in particular diagonally in the direction of the roadway 26 on which the motor vehicle is located.
[0060] In an embodiment not shown here, it is provided that the axle carrier housing connection arrangement 7 additionally comprises at least one second carrier, which in particular has two opposing carrier ends. The at least one second carrier is connected, in particular welded, screwed, and / or riveted, to the first axle carrier housing 3.1 and to the second axle carrier housing 3.2 and / or to at least one first carrier 25 of the at least two first carriers 25, in particular by means of the two carrier ends.
[0061] In an embodiment not shown here, it is provided that the at least one second support has a stabilizing connection. Alternatively or additionally, it is provided that the at least one second support is connected, in particular welded, screwed, and / or riveted, to at least one first support 25 of the at least two first supports 25 by means of at least one third support.
[0062] In an embodiment not shown here, the axle carrier housing connection arrangement 7 comprises a stiffening cover element. The stiffening cover element is connected to the at least two first supports 25, in particular welded, screwed, and / or riveted.
[0063] In this embodiment, it is provided that the two first supports 25 have a double-T profile.
[0064] In an embodiment not shown here, it is provided that a carrier selected from the two first carriers 25, the at least one second carrier and the at least one third carrier has a profile selected from a group consisting of: a polygon, a rectangle, a square, a circle, an oval, a T-profile and a double-T profile.
[0065] Figure 4 shows a schematic representation of the first embodiment of the axle support device 1 in the first - isometric - view. In this representation, compared to Figure 1, the drive element 33, in particular the drive shaft, is also shown. It can also be seen that the drive element 33 extends through the first axle bearing device 9.1 and the second axle bearing device 9.2 to drive the motor vehicle.
[0066] A drive transmission element 35, in particular a gear, for example of a differential gear or a gear of the electric drive, is arranged in the drive housing receiving space 17.
[0067] In one embodiment, the axle carrier device has a drive housing (not shown here), in which, for example, the differential gear or the gear of the electric drive is arranged.
Claims
Patent claims 1. Axle support device (1) for a motor vehicle, comprising: - a first axle carrier housing (3.1) having a first axle bearing device (9.1) for a drive element (33), - a second axle carrier housing (3.2) different from the first axle carrier housing (3.1) and having a second axle bearing device (9.2) for the drive element (33), wherein the first axle bearing device (9.1) and the second axle bearing device (9.2) are arranged in alignment with one another along a bearing axis (13), - an axle carrier housing connection arrangement (7) connected to the first axle carrier housing (3.1) and the second axle carrier housing (3.2), wherein - the axle carrier housing connection arrangement (7) has two first connecting elements (15) which each extend from the first axle carrier housing (3.1) to the second axle carrier housing (3.2), are spaced apart from one another in some areas and delimit a drive housing receiving space (17) between them, wherein - the axle carrier housing connection arrangement (7) is designed such that a drive housing can be arranged in the drive housing receiving space (17), and that the drive element (33) emerging from the drive housing on both sides can pass through the first axle bearing device (9.1) and the second axle bearing device (9.2) to drive the motor vehicle.
2. Axle support device (1) according to claim 1, wherein - the axle carrier housing connection arrangement (7) is arranged between the first axle carrier housing (3.1) and the second axle carrier housing (3.2) and has at least two first carriers (25) as the first connecting elements (15), wherein - the at least two first supports (25) each have a first support end (27.1) and a second support end (27.2) opposite the first support end (27.1), wherein - the at least two first supports (25) are fastened to the first axle support housing (3.1) with the respective first support end (27.1), wherein the at least two first supports (25) are fastened to the second axle support housing (3.2) with the respective second support end (27.2), wherein preferably - at least one first support of the at least two first supports (25) is fastened with a support end, selected from the first support end (27.1) and the second support end (27.2), to an end face (29) of the axle support housing (3) assigned to the support end, said end facing the drive housing receiving space (17), and / or - at least one first support of the at least two first supports (25) is fastened with a support end, selected from the first support end (27.1) and the second support end (27.2), to at least one lateral surface of the axle support housing (3) assigned to the support end.
3. Axle support device (1) according to claim 1, wherein - the axle carrier housing connection arrangement (7) is arranged between the first axle carrier housing (3.1) and the second axle carrier housing (3.2) and has at least two first carriers (25) as the first connecting elements (15), wherein - the at least two first supports (25) each have a first support end (27.1) and a second support end (27.2) opposite the first support end (27.1), wherein - two identical support ends, selected from the first support ends (27.1) and the second support ends (27.2), are designed such that they form an axle support housing assigned to the support ends, selected from the first axle support housing (3.1) and the second axle support housing (3.2).
4. Axle support device (1) according to claim 2 or 3, wherein - a first carrier distance measured at a measuring carrier end (27.3), selected from the first carrier end (27.1) and the second carrier end (27.2) of a first carrier (25.1) of the at least two first carriers (25), perpendicular to the bearing axis (13), between the first carrier (25.1) and the bearing axis (13) is smaller than a second carrier distance measured at an imaginary measuring point arranged along the bearing axis (13) between the first axle carrier housing (3.1) and the second axle carrier housing (3.2) perpendicular to the bearing axis (13) between the first carrier (25.1) and the bearing axis (13), wherein - the first carrier (25.1) is curved in some areas between the measuring carrier end (27.3) and the imaginary measuring point.
5. Axle support device (1) according to one of claims 2 to 4, wherein - the axle carrier housing connection arrangement (7) additionally comprises at least one second carrier, wherein - the at least one second support is connected to the first axle support housing (3.1) and to the second axle support housing (3.2) and / or to at least one first support (25) of the at least two first supports (25).
6. Axle support device (1) according to claim 5, wherein - the at least one second support has a stabilizing connection, and / or - the at least one second support is connected to at least one first support (25) of the at least two first supports (25) by means of at least one third support.
7. Axle support device (1) according to one of claims 2 to 6, further comprising the drive housing, wherein - the drive housing is arranged in the drive housing receiving space (17), wherein - the drive housing is connected to the at least two first supports (25) and / or to the first axle support housing (3.1) and / or to the second axle support housing (3.2).
8. Axle support device (1) according to claim 7, wherein - the drive housing has a stabilizing connection, and / or - the drive housing has a damping device.
9. Axle carrier device (1) according to one of claims 2 to 8, wherein the axle carrier housing connection arrangement (7) comprises a stiffening cover element which is connected to the at least two first carriers (25).
10. Axle support device (1) according to one of claims 2 to 9, wherein a support selected from the two first supports (25), the at least one second support and the at least one third support has a profile selected from a group consisting of: a polygon, a rectangle, a square, a circle, an oval, a T-profile, a U-profile, a Z-profile, an L-profile and a double-T profile.