Rear auxiliary frame and vehicle

Abstract

The utility model discloses a rear auxiliary frame and a vehicle, the rear auxiliary frame comprises a front cross beam and a rear cross beam, the front cross beam and the rear cross beam are spaced along the longitudinal direction of the vehicle; the two frame longitudinal beams are distributed at intervals in the transverse direction of the vehicle and are connected between the front cross beam and the rear cross beam so as to jointly define an electric drive containing space; the rear lower control arm mounting bracket is respectively connected with the bottom of the frame longitudinal beam and the bottom of the rear cross beam, and a hollow reinforcing cavity is formed in the rear lower control arm mounting bracket. According to the rear auxiliary frame, installation of the electric drive assembly can be achieved through the electric drive containing space, the rear lower control arm installation support is arranged to be connected with the bottom of the frame longitudinal beam and the bottom of the rear cross beam respectively, and the connection strength of the rear lower control arm installation support and the rear auxiliary frame can be improved. Therefore, the connection reliability of the rear lower control arm and the rear auxiliary frame is improved, the vibration of the vehicle during running is reduced, and the riding comfort is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle manufacturing technical field especially relates to a rear subframe and vehicle with the rear subframe. BACKGROUND

[0002] The rear subframe is an important component on the vehicle and can bear the weight of the vehicle body and transmit force, the rear subframe includes a frame crossbeam and a frame longitudinal beam, wherein the structure strength of the rear subframe at the rear lower control arm support is low, which affects the connection reliability of the rear lower control arm and the rear subframe, the vehicle operation performance is poor, and there is room for improvement. SUMMARY

[0003] The utility model aims at solving one of the technical problems in prior art at least, for this purpose, the utility model provides a rear subframe, the rear subframe can realize the installation of electric drive assembly, and the connection strength of rear lower control arm and rear subframe can be improved through rear lower control arm mounting support, so that the vehicle runs stably, and the ride comfort is improved.

[0004] According to the rear subframe of the utility model embodiment, including: front crossbeam and rear crossbeam, the front crossbeam and the rear crossbeam are spaced apart along the vehicle longitudinal direction, two frame longitudinal beams, two frame longitudinal beams are spaced apart and are connected between the front crossbeam and the rear crossbeam to define an electric drive containing space, rear lower control arm mounting support, the rear lower control arm mounting support is connected with the bottom of the frame longitudinal beam and the bottom of the rear crossbeam respectively, and a hollow reinforcing cavity is formed in the rear lower control arm mounting support.

[0005] According to the rear subframe of the utility model embodiment, the electric drive containing space is defined by the front crossbeam, the rear crossbeam and the two frame longitudinal beams, the installation of electric drive assembly can be realized, and the rear lower control arm mounting support is connected with the bottom of the frame longitudinal beam and the bottom of the rear crossbeam respectively, the connection area of the rear lower control arm mounting support and the rear subframe can be increased, the connection strength between the two can be enhanced, the connection reliability of the rear lower control arm and the wheel and the rear subframe can be improved, the vibration generated during the driving of the vehicle can be reduced, the vehicle runs stably, and the ride comfort is improved.

[0006] According to the rear subframe of some embodiments of the utility model, the rear lower control arm mounting support is configured to extend outward from back to front, and at least part of the rear lower control arm mounting support is located at the bottom of the electric drive containing space.

[0007] According to the rear subframe of some embodiments of the utility model, the hollow reinforcing cavity is configured to extend obliquely from back to front, the rear end of the hollow reinforcing cavity is open towards the rear crossbeam, and the front end of the hollow reinforcing cavity is open towards the frame longitudinal beam.

[0008] According to some embodiments of the present invention, the rear subframe has two rear lower control arm mounting brackets, which are symmetrically distributed at the bottom of both ends of the rear crossbeam.

[0009] According to some embodiments of the present invention, the rear subframe further includes a front upper control arm bracket and / or a front lower control arm bracket. The front upper control arm bracket is mounted on the upper side of the end of the front crossbeam, and the front lower control arm bracket is mounted on the lower side of the end of the front crossbeam. The front upper control arm bracket and / or the front lower control arm bracket are connected to the front end of the longitudinal beam of the frame.

[0010] According to some embodiments of the present invention, the rear subframe also includes a rear upper control arm bracket, which is mounted on the upper side of the end of the rear crossbeam.

[0011] According to some embodiments of the present utility model, the rear subframe, the front crossbeam is an integrally formed beam;

[0012] And / or, the rear crossbeam is a one-piece molded beam;

[0013] And / or, at least a portion of the rear crossbeam is configured to gradually decrease in thickness toward the ends in the vertical direction of the vehicle.

[0014] According to some embodiments of the present invention, each of the longitudinal beams of the frame is formed with a clearance through hole that runs laterally through the vehicle. The clearance through hole is connected to the electric drive housing space and is used to pass through the drive shaft of the electric drive assembly.

[0015] According to some embodiments of the present invention, the rear subframe of the front crossbeam and at least one of the two frame longitudinal beams are provided with motor mounting points.

[0016] This utility model also proposes a vehicle.

[0017] The vehicle according to the present invention includes the rear subframe of any of the above embodiments.

[0018] The vehicle and the aforementioned rear subframe have the same advantages over the prior art, which will not be repeated here.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1This is a structural schematic diagram of the rear subframe according to an embodiment of the present utility model;

[0022] Figure 2 This is a top view of the rear subframe according to an embodiment of the present utility model;

[0023] Figure 3 This is a partial schematic diagram of the bottom of the rear subframe according to an embodiment of the present utility model;

[0024] Figure 4 This is a rear view of the rear subframe according to an embodiment of the present utility model.

[0025] Figure label:

[0026] Rear subframe 100,

[0027] Front crossbeam 11, rear crossbeam 12, mounting position 13, frame longitudinal beam 2, electric drive housing space 21, clearance perforation 22, motor suspension mounting point 24, front upper control arm bracket 3, front lower control arm bracket 4, rear upper control arm bracket 5, rear lower control arm mounting bracket 6, hollow reinforcing cavity 61, front toe rod mounting bracket 62. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0032] The following is for reference. Figures 1-4 The rear subframe 100 according to an embodiment of the present invention defines an electric drive housing space 21 by means of a front crossbeam 11, a rear crossbeam 12, and two frame longitudinal beams 2, which can realize the installation of the electric drive assembly. The rear lower control arm mounting bracket 6 is provided and connected to the bottom of the frame longitudinal beam 2 and the bottom of the rear crossbeam 12 respectively, which can increase the connection area between the rear lower control arm mounting bracket 6 and the rear subframe 100, thereby enhancing the connection strength between the two and improving the connection reliability between the rear lower control arm and the wheels and the rear subframe 100. This can reduce the vibration generated during vehicle operation, so as to make the vehicle run stably and improve the ride comfort.

[0033] like Figures 1-4 As shown, the rear subframe 100 according to one embodiment of the present utility model includes: a front crossbeam 11, a rear crossbeam 12, a frame longitudinal beam 2, and a rear lower control arm mounting bracket 6.

[0034] The front crossbeam 11 and the rear crossbeam 12 are spaced apart along the longitudinal direction of the vehicle, and the two frame longitudinal beams 2 are spaced apart along the transverse direction of the vehicle and are connected between the front crossbeam 11 and the rear crossbeam 12 to jointly define the electric drive housing space 21.

[0035] Specifically, the front crossbeam 11 and the rear crossbeam 12 both extend laterally along the vehicle to transmit and dissipate lateral forces. The two frame longitudinal beams 2 extend longitudinally along the vehicle to transmit and dissipate longitudinal forces. The front crossbeam 11 and the rear crossbeam 12 are spaced apart in the front-rear direction of the vehicle, and the two frame longitudinal beams 2 are spaced apart laterally along the vehicle. The two frame longitudinal beams 2 are connected between the front crossbeam 11 and the rear crossbeam 12. In this way, the front crossbeam 11, the rear crossbeam 12 and the two frame longitudinal beams 2 can jointly define the electric drive housing space 21 for the installation of the electric drive assembly.

[0036] Furthermore, the front ends of the two frame longitudinal beams 2 are supported and connected by the front crossbeam 11, which can improve the structural stability of the front end of the frame longitudinal beams 2. The rear ends of the two frame longitudinal beams 2 are supported and connected by the rear crossbeam 12, which can improve the structural stability of the rear end of the frame longitudinal beams 2. This improves the structural stability of the rear subframe 100, thus providing reliable installation conditions for the electric drive assembly and facilitating the reliable installation of the suspension system structure, thereby improving the stability of vehicle operation.

[0037] The rear subframe 100 is a crucial chassis component of the vehicle. Located at the rear of the vehicle, it securely fastens internal and rear components to the chassis, ensuring stability during vehicle operation. Furthermore, in the event of a collision, the external force is transmitted and dispersed along the two longitudinal beams 2, the front crossbeam 11, and the rear crossbeam 12 of the rear subframe 100, reducing deformation and maintaining vehicle stability and safety.

[0038] Furthermore, the two transverse ends of the front crossbeam 11 are welded to the front ends of the two frame longitudinal beams 2, and the two transverse ends of the rear crossbeam 12 are welded to the rear ends of the two frame longitudinal beams 2, respectively. This results in high welding strength and improves the overall strength of the rear subframe 100. The two transverse ends of the front crossbeam 11 and the rear crossbeam 12 can be connected to the two frame longitudinal beams 2 respectively via bolts or other connecting components.

[0039] The rear lower control arm mounting bracket 6 is connected to the bottom of the longitudinal beam 2 and the bottom of the rear cross beam 12 of the vehicle frame, and a hollow reinforcing cavity 61 is formed inside the rear lower control arm mounting bracket 6.

[0040] Specifically, such as Figure 1 and Figure 2 As shown, the rear lower control arm mounting bracket 6 is disposed at the bottom of the rear subframe 100. At least a portion of the rear lower control arm mounting bracket 6 can be connected to the bottom of the frame longitudinal beam 2, and another portion can be connected to the bottom of the rear crossbeam 12. This allows the rear lower control arm mounting bracket 6 to connect to both the frame longitudinal beam 2 and the rear crossbeam 12, increasing the connection area of ​​the rear lower control arm mounting bracket 6 and improving the connection strength between the rear lower control arm mounting bracket 6 and the rear subframe 100. The rear lower control arm mounting bracket 6 can be connected to the rear area of ​​the frame longitudinal beam 2 or the rear crossbeam 12, or it can be connected to the junction of the frame longitudinal beam 2 and the rear crossbeam 12.

[0041] In this way, one end of the rear lower control arm can be connected to the lower end of the rear subframe 100 via the rear lower control arm mounting bracket 6, and the other end of the rear lower control arm can be connected to the wheel, thus realizing the connection between the wheel and the rear subframe 100. The force transmission between the wheel and the rear subframe 100 can be achieved through the rear lower control arm to ensure stable wheel operation. Furthermore, the rear lower control arm mounting bracket 6 can be provided with rear connection holes for mounting the rear lower control arm.

[0042] The rear lower control arm mounting bracket 6 can be connected to the rear crossbeam 12 and the frame longitudinal beam 2 by welding, which can make the rear lower control arm mounting bracket 6, the rear crossbeam 12 and the frame longitudinal beam 2 integrated, thereby improving the connection reliability between the rear lower control arm and the rear subframe 100.

[0043] Furthermore, a hollow reinforcing cavity 61 is formed within the rear lower control arm mounting bracket 6, which enhances the strength of the rear lower control arm mounting bracket 6 and improves its stability and resistance to deformation. The hollow reinforcing cavity 61 can improve noise and vibration; its internal cavity structure can absorb and disperse vibration energy, reducing the transmission of vibration into the vehicle interior, thereby improving ride comfort. Additionally, in the event of a collision, the hollow reinforcing cavity 61 absorbs a large amount of energy, protecting passenger safety.

[0044] Among them, the hollow reinforcing cavity 61 is a hollow structure. Compared with a solid structure, it can reduce the weight of the rear lower control arm mounting bracket 6 without reducing the structural strength of the rear lower control arm mounting bracket 6, so as to meet the requirements of lightweight design.

[0045] According to the embodiment of this utility model, the rear subframe 100 defines an electric drive housing space 21 through the front crossbeam 11, the rear crossbeam 12, and two frame longitudinal beams 2, which can realize the installation of the electric drive assembly. The rear lower control arm mounting bracket 6 is connected to the bottom of the frame longitudinal beam 2 and the bottom of the rear crossbeam 12, respectively, which can increase the connection area between the rear lower control arm mounting bracket 6 and the rear subframe 100, thereby enhancing the connection strength between the two and improving the connection reliability between the rear lower control arm and the wheels and the rear subframe 100. This can reduce the vibration generated during vehicle operation, so as to make the vehicle run stably and improve the ride comfort.

[0046] In some embodiments, the rear lower control arm mounting bracket 6 is configured to extend outward from rear to front, and at least a portion of the rear lower control arm mounting bracket 6 is located at the bottom of the electric drive accommodating space 21.

[0047] Specifically, such as Figure 3As shown, the rear lower control arm mounting bracket 6 is connected to the rear crossbeam 12 and the frame longitudinal beam 2. The rear lower control arm mounting bracket 6 does not extend in the front-rear or left-right direction; instead, it extends outwards from rear to front. This allows the rear lower control arm mounting bracket 6 to support the connection between the rear crossbeam 12 and the frame longitudinal beam 2, increasing the connection range between them and improving the connection strength. At least a portion of the rear lower control arm mounting bracket 6 is located at the bottom of the electric drive housing 21, preventing interference between this portion of the bracket and the electric drive assembly. This facilitates the layout and installation of the electric drive assembly and also provides shelter from the bottom of the electric drive housing 21.

[0048] Therefore, by setting the rear lower control arm mounting bracket 6 to extend in the inclined direction, the rear crossbeam 12 and the frame longitudinal beam 2 can transmit force through the rear lower control arm mounting bracket 6 in the inclined direction. This adds a force transmission path between the rear crossbeam 12 and the frame longitudinal beam 2, which is conducive to the rapid dissipation of force and can improve the stability of the driving process.

[0049] In some embodiments, the hollow reinforcing cavity 61 is configured to extend obliquely from rear to front, with the rear end of the hollow reinforcing cavity 61 opening toward the rear crossbeam 12 and the front end of the hollow reinforcing cavity 61 opening toward the frame longitudinal beam 2.

[0050] Specifically, the rear lower control arm mounting bracket 6 can be connected to the frame longitudinal beam 2 and the rear cross beam 12 by stamping and welding. A hollow reinforcing cavity 61 is formed inside the rear lower control arm mounting bracket 6. The extension direction of the hollow reinforcing cavity 61 is the same as the extension direction of the rear lower control arm mounting bracket 6. Both are constructed to extend outward from the rear to the front, which allows the hollow reinforcing cavity 61 to absorb and disperse vibration energy in the inclined direction. Compared with a straight setting, it can increase the absorption and dispersion path of vibration energy, effectively reduce the transmission of vibration to the vehicle interior, and thus improve ride comfort.

[0051] Furthermore, the volume of the hollow reinforcing cavity 61 gradually increases from rear to front and outward, which makes the cavity shape of the hollow reinforcing cavity 61 orderly and stable, facilitating the stable transmission of vibration energy. The rear end of the hollow reinforcing cavity 61 opens towards the rear crossbeam 12, allowing heat within the hollow reinforcing cavity 61 to be transferred rearward through the opening, while the front end of the hollow reinforcing cavity 61 opens towards the frame longitudinal beam 2, allowing heat within the hollow reinforcing cavity 61 to be transferred forward through the opening, thus reducing heat accumulation.

[0052] In some embodiments, there are two rear lower control arm mounting brackets 6, and the two rear lower control arm mounting brackets 6 are symmetrically distributed at the bottom of both ends of the rear crossbeam 12.

[0053] Specifically, such asFigure 1 and Figure 2 As shown, two rear lower control arm mounting brackets 6 are respectively connected to both ends of the rear crossbeam 12 and are symmetrically distributed in the transverse direction of the vehicle. The two transverse ends of the rear crossbeam 12 are welded to the rear ends of the frame longitudinal beams 2. The symmetrically distributed rear lower control arm mounting brackets 6 allow the two transverse ends of the rear crossbeam 12 to be connected to the frame longitudinal beams 2, enhancing the connection strength between the rear crossbeam 12 and the two frame longitudinal beams 2. During force transmission, the transverse force at the rear crossbeam 12 can be transmitted transversely to the frame longitudinal beams 2, and can also be transmitted obliquely from the two rear lower control arm mounting brackets 6 to the two frame longitudinal beams 2, increasing the force transmission paths between the rear crossbeam 12 and the two frame longitudinal beams 2, thus facilitating the rapid diffusion of vibration energy.

[0054] Furthermore, the rear lower control arm mounting bracket 6 is used to install the rear lower control arm. By symmetrically arranging the two rear lower control arm mounting brackets 6, the rear lower control arms can be symmetrically installed at the bottom of the lateral ends of the rear crossbeam 12, making the rear subframe 100 structurally symmetrical. The rear subframe 100 is connected to the left and right wheels through the two symmetrical rear lower control arms, which makes the connection stability between the rear subframe 100 and the left and right wheels better and helps to improve the overall driving comfort of the vehicle.

[0055] Among them, such as Figure 3 As shown, the two rear lower control arm mounting brackets 6 are also connected to front toe rod mounting brackets 62. The front toe rod mounting brackets 62 are used to mount the front toe rod, which connects the left and right rear wheels of the vehicle, allowing the left and right rear wheels to rotate synchronously during driving. This synchronicity helps reduce tire wear and improves vehicle stability. The front toe rod mounting brackets 62 are configured in the same way as the rear lower control arm mounting brackets 6, both extending outwards from rear to front. The front toe rod mounting brackets 62 are welded to the rear lower control arm mounting brackets 6 and also welded to the rear crossbeam 12 or the frame longitudinal beam 2, which increases the connection strength of the front toe rod mounting brackets 62. The front toe rod mounting brackets 62 are also provided with connection holes for mounting the front toe rod.

[0056] In some embodiments, the rear subframe 100 further includes a front upper control arm bracket 3 and / or a front lower control arm bracket 4. The front upper control arm bracket 3 is mounted on the upper side of the end of the front crossbeam 11, and the front lower control arm bracket 4 is mounted on the lower side of the end of the front crossbeam 11. The front upper control arm bracket 3 and / or the front lower control arm bracket 4 are connected to the front end of the frame longitudinal beam 2.

[0057] In other words, the upper front control arm bracket 3 and / or the lower front control arm bracket 4 can be respectively installed on the upper and lower sides of the front end of the front crossbeam 11, or the upper front control arm bracket 3 and / or the lower front control arm bracket 4 can be respectively installed on the upper and lower sides of the front end of the frame longitudinal beam 2, or one of the upper front control arm bracket 3 and / or the lower front control arm bracket 4 can be installed on the front crossbeam 11 and the other on the frame longitudinal beam 2. The installation methods are diverse and can be flexibly selected.

[0058] Specifically, the upper front control arm bracket 3 is used to install the upper front control arm, and the lower front control arm bracket 4 is used to install the lower front control arm. The upper front control arm bracket 3 can connect one end of the upper front control arm to the upper end of the rear subframe 100, and the other end of the upper front control arm can be connected to the wheel. The lower front control arm bracket 4 can connect one end of the lower front control arm to the lower end of the rear subframe 100, and the other end of the lower front control arm can be connected to the wheel. This achieves the connection between the wheel and the rear subframe 100. The upper front control arm and the lower front control arm can achieve the force transmission between the wheel and the rear subframe 100 to ensure the stable operation of the wheel.

[0059] The upper front control arm bracket 3 and the lower front control arm bracket 4 can be connected to the front crossbeam 11 or the longitudinal beam of the frame 2 by welding. Furthermore, the upper front control arm bracket 3 and the lower front control arm bracket 4 can each be provided with front connection holes for mounting the upper front control arm and the lower front control arm.

[0060] In some embodiments, the rear subframe 100 further includes a rear upper control arm bracket 5, which is mounted on the upper side of the end of the rear crossbeam 12. The rear upper control arm bracket 5 can also be mounted on the upper side of the end of the frame longitudinal beam 2, and the rear upper control arm bracket 5 can also be mounted on the upper side of the connection between the frame longitudinal beam 2 and the rear crossbeam 12. The mounting methods are diverse and can be flexibly selected.

[0061] Specifically, the upper rear control arm bracket 5 is used to install the upper rear control arm. One end of the upper rear control arm can be connected to the upper end of the rear subframe 100 through the upper rear control arm bracket 5, and the other end of the upper rear control arm can be connected to the wheel. Similarly, one end of the lower rear control arm can be connected to the lower end of the rear subframe 100 through the lower rear control arm bracket 6, and the other end of the lower rear control arm can be connected to the wheel. This enables the connection between the wheel and the rear subframe 100. The upper rear control arm and the lower rear control arm can transmit force between the wheel and the rear subframe 100 to ensure stable wheel operation.

[0062] The rear upper control arm bracket 5 can be connected to the rear crossbeam 12 and / or the frame longitudinal beam 2 by welding. Furthermore, the rear upper control arm bracket 5 can be provided with rear connection holes for mounting the rear upper control arm.

[0063] In some embodiments, the front crossbeam 11 is a one-piece molded beam. The front crossbeam 11 can be integrally formed by stamping, resulting in high overall structural strength and a more uniform overall structure, reducing the likelihood of localized deformation or cracking. This allows the front crossbeam 11 to maintain good stability and durability under heavy loads or other external forces. Furthermore, the one-piece molding reduces the need for additional connecting structures within the front crossbeam 11, simplifying installation and lowering costs.

[0064] In other embodiments, the rear crossbeam 12 is a one-piece molded beam, similar to the front crossbeam 11. The rear crossbeam 12 can be integrally molded by stamping, resulting in high overall structural strength. Furthermore, the integrally molded rear crossbeam 12 has a more uniform overall structure, making it less prone to localized deformation or cracking. This allows the rear crossbeam 12 to maintain good stability and durability under heavy loads or other external forces. The one-piece molding also reduces the need for additional connecting structures within the rear crossbeam 12, simplifying the installation process and lowering installation costs.

[0065] In other embodiments, at least a portion of the rear crossbeam 12 is configured to gradually decrease in thickness in the vertical direction of the vehicle towards the ends.

[0066] Specifically, such as Figure 4 As shown, the vertical thickness of at least a portion of the middle of the rear crossbeam 12 can be set to be relatively large, which can improve the structural strength of the middle region of the rear crossbeam 12, thereby improving the overall load-bearing capacity and bending resistance of the rear crossbeam 12. Furthermore, other structures can be installed and laid out in the middle position of the rear crossbeam 12, thus improving the installation strength of these structures on the rear crossbeam 12. Moreover, the vertical thickness of at least a portion of the left end of the rear crossbeam 12 gradually decreases towards the left end, and the vertical thickness of at least a portion of the right end of the rear crossbeam 12 gradually decreases towards the right end. That is, the vertical thickness of the left and right ends of the rear crossbeam 12 is relatively small, which can reduce its vertical space occupation, avoid interference with other structures, and play a role in avoidance. Furthermore, the structure of the rear crossbeam 12 can be symmetrically distributed along the transverse direction, facilitating the processing and forming of the rear crossbeam 12.

[0067] Furthermore, the above-mentioned design allows for a more stable and natural change in vertical height from the middle region of the rear crossbeam 12 to both ends, resulting in a more uniform variation in structural strength and improved mechanical properties of the rear crossbeam 12. It also reduces the weight of at least a portion of the structure at both ends of the rear crossbeam 12, thereby lowering the overall weight of the rear crossbeam 12 and meeting lightweight design requirements.

[0068] In some embodiments, each frame longitudinal beam 2 is formed with a clearance through hole 22 that runs laterally through the vehicle. The clearance through hole 22 communicates with the electric drive housing space 21 and is used to pass through the drive shaft of the electric drive assembly.

[0069] Specifically, each frame longitudinal beam 2 has a clearance hole 22. The clearance hole 22 is used to avoid the drive shaft of the electric drive assembly, and it runs through the vehicle laterally. The clearance hole 22 is connected to the electric drive housing space 21, allowing the drive shaft of the electric drive assembly in the electric drive housing space 21 to extend from the clearance hole 22 along the vehicle's lateral direction, thus facilitating the arrangement of the electric drive assembly. Therefore, the clearance hole 22 can prevent interference between the drive shaft of the electric drive assembly and the frame longitudinal beam 2, thereby improving the stability and safety of the electric drive assembly operation.

[0070] The electric drive assembly serves as the driving source and may include a drive motor and a reduction gear structure. Power is output through the cooperation of the drive motor and reduction gear structure. The electric drive assembly is installed within the electric drive housing 21 and has two drive shafts that extend laterally out of the electric drive housing 21. Each drive shaft can be connected to one of the two wheel axles of the vehicle, thus driving the wheels to rotate.

[0071] In some embodiments, at least one of the front crossbeam 11 and the two frame longitudinal beams 2 is provided with a motor mounting point 24. That is, the motor mounting point 24 can be provided in one of the front crossbeam 11 and the two frame longitudinal beams 2. Specifically, the motor mounting point 24 can be provided in the front crossbeam 11, and it can be provided in either the left or right frame longitudinal beam 2. Alternatively, the motor mounting point 24 can be provided in both the front crossbeam 11 and the two frame longitudinal beams 2. Through these various configuration methods, the electric drive assembly can be installed and laid out using the motor mounting point 24. The configuration methods are diverse and can be flexibly selected.

[0072] Specifically, in this embodiment, motor mounting points 24 are respectively provided on the front crossbeam 11 and the two frame longitudinal beams 2. The electric drive assembly can be connected to the front crossbeam 11 and the two frame longitudinal beams 2 through the motor mounting points 24, thereby enabling the electric drive assembly to be installed on the rear subframe 100. Furthermore, this arrangement allows the electric drive assembly to be installed in three different directions and positions, improving the connection strength of the electric drive assembly and ensuring stable and reliable operation.

[0073] The front crossbeam 11 and the frame longitudinal beam 2 can each be equipped with one motor mounting point 24, or two motor mounting points 24 can be provided, etc.

[0074] Furthermore, the motor mount mounting point 24 is used for press-fitting the motor mount. Press-fitting the motor mount at the motor mount mounting point 24 can be used for the installation of the electric drive assembly, which is suitable for two-wheel drive, rear-wheel drive and four-wheel drive modes. When the vehicle is in front-wheel drive mode, the motor mount is not pressed at the motor mount mounting point 24, that is, the electric drive assembly is not installed. Thus, it can be adapted to different types of vehicles and expand the scope of use.

[0075] It should also be noted that the rear subframe 100 can be connected and fixed to the vehicle body structure by setting mounting positions 13 at the front and rear ends of the two frame longitudinal beams 2, or by setting mounting positions 13 at the left and right ends of the front crossbeam 11 and the rear crossbeam 12. Both of these methods can be used to connect the rear subframe 100 to the vehicle body structure.

[0076] This utility model also proposes a vehicle.

[0077] The vehicle according to the present invention includes a rear subframe 100 of any of the above embodiments. An electric drive housing space 21 is defined by a front crossbeam 11, a rear crossbeam 12 and two frame longitudinal beams 2, which can realize the installation of the electric drive assembly. The rear lower control arm mounting bracket 6 is provided and connected to the bottom of the frame longitudinal beam 2 and the bottom of the rear crossbeam 12 respectively. This can increase the connection area between the rear lower control arm mounting bracket 6 and the rear subframe 100, thereby enhancing the connection strength between the two and improving the connection reliability between the rear lower control arm and the wheels and the rear subframe 100. This can reduce the vibration generated by the vehicle during driving, so as to make the vehicle run stably and improve the ride comfort.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear subframe, characterized in that, include: A front crossbeam and a rear crossbeam, the front crossbeam and the rear crossbeam being spaced apart along the longitudinal direction of the vehicle; Two frame longitudinal beams are distributed laterally along the vehicle and are both connected between the front crossbeam and the rear crossbeam to jointly define the electric drive accommodation space. The rear lower control arm mounting bracket is connected to the bottom of the longitudinal beam of the vehicle frame and the bottom of the rear cross beam, and a hollow reinforcing cavity is formed inside the rear lower control arm mounting bracket.

2. The rear subframe according to claim 1, characterized in that, The rear lower control arm mounting bracket is configured to extend outward from rear to front, and at least a portion of the rear lower control arm mounting bracket is located at the bottom of the electric drive housing space.

3. The rear subframe according to claim 2, characterized in that, The hollow reinforcing cavity is constructed to extend at an angle from back to front, with its rear end opening toward the rear crossbeam and its front end opening toward the longitudinal beam of the vehicle frame.

4. The rear subframe according to claim 1, characterized in that, There are two rear lower control arm mounting brackets, and the two rear lower control arm mounting brackets are symmetrically distributed at the bottom of both ends of the rear crossbeam.

5. The rear subframe according to claim 1, characterized in that, It also includes a front upper control arm bracket and / or a front lower control arm bracket, wherein the front upper control arm bracket is mounted on the upper side of the end of the front crossbeam, and the front lower control arm bracket is mounted on the lower side of the end of the front crossbeam, and the front upper control arm bracket and / or the front lower control arm bracket are connected to the front end of the frame longitudinal beam.

6. The rear subframe according to claim 1, characterized in that, It also includes a rear upper control arm bracket, which is mounted on the upper side of the end of the rear crossbeam.

7. The rear subframe according to any one of claims 1-6, characterized in that, The front crossbeam is a one-piece molded beam; And / or, the rear crossbeam is a one-piece molded beam; And / or, at least a portion of the rear crossbeam is configured to gradually decrease in thickness toward the ends in the vertical direction of the vehicle.

8. The rear subframe according to any one of claims 1-6, characterized in that, Each of the frame longitudinal beams is formed with a clearance through hole that runs laterally through the vehicle. The clearance through hole communicates with the electric drive housing space and is used to pass through the drive shaft of the electric drive assembly.

9. The rear subframe according to any one of claims 1-6, characterized in that, The front crossbeam and at least one of the two frame longitudinal beams are provided with motor mounting points.

10. A vehicle, characterized in that, Includes the rear subframe as described in any one of claims 1-9.

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