Rear auxiliary frame and vehicle

Abstract

The utility model discloses a rear sub-frame and a vehicle. The rear sub-frame comprises at least one frame cross beam, at least one rear sub-frame and at least one rear sub-frame, the two vehicle frame longitudinal beams are distributed in the transverse direction of the vehicle at intervals, and at least one vehicle frame cross beam is connected between the two vehicle frame longitudinal beams; wherein an electric drive containing space is formed between the two frame longitudinal beams, each frame longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section, at least part of each longitudinal beam front section is constructed into an arch structure, and each arch structure is constructed to arch upwards so that an avoiding space can be formed below the arch structure; the avoiding space communicates with the electric drive containing space and is used for avoiding a driving shaft of an electric drive assembly. According to the rear auxiliary frame, interference or collision between the driving shaft and the frame longitudinal beam is effectively avoided, the driving shaft can keep a stable motion state under any working condition, and therefore stable and safe driving of a vehicle is guaranteed.

Description

TECHNICAL FIELD

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

[0002] The rear subframe is an important part of the vehicle, which can bear the weight of the vehicle body and transmit force. The rear subframe includes a frame cross beam and a frame longitudinal beam. The frame longitudinal beam extends along the longitudinal direction of the vehicle. When installing the rear subframe, the frame longitudinal beam is likely to interfere with the drive shaft of the electric drive assembly extending along the transverse direction of the vehicle, which needs to be improved. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, the utility model provides a rear subframe, which effectively avoids interference or collision between the drive shaft and the frame longitudinal beam, so that the drive shaft can maintain a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0004] The rear subframe according to the utility model embodiment comprises at least one frame cross beam, two frame longitudinal beams, and at least one frame cross beam connected between the two frame longitudinal beams. The two frame longitudinal beams are spaced apart along the transverse direction of the vehicle. Each frame longitudinal beam comprises a front section and a rear section. At least part of the front section is configured as an arch-shaped structure. The arch-shaped structure is configured to arch upward to form an avoidance space below the arch-shaped structure. The avoidance space is in communication with the electric drive accommodation space and is used to avoid the drive shaft of the electric drive assembly.

[0005] The rear subframe according to the utility model embodiment has at least part of the front section of the frame longitudinal beam configured as an arch-shaped structure, and an avoidance space is formed below the arch-shaped structure to avoid the drive shaft of the electric drive assembly. This not only ensures the normal installation of the drive shaft of the electric drive assembly, but also provides sufficient movement space for the drive shaft of the electric drive assembly. Therefore, interference or collision between the drive shaft and the frame longitudinal beam is effectively avoided, so that the drive shaft can maintain a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0006] According to some embodiments of the utility model, the electric drive containing space includes a front containing space and a rear containing space, the front containing space is communicated with the front side of the rear containing space, the front containing space is formed between the front section of the two frame longitudinal beams, the rear containing space is formed between the rear section of the two frame longitudinal beams, the front containing space is used for containing the reducer and the drive shaft, the avoiding space is communicated with the front containing space, and the rear containing space is used for containing the driving motor.

[0007] According to some embodiments of the utility model, the front section of the two frame longitudinal beams is symmetrically distributed, and the avoiding space of the two frame longitudinal beams is symmetrically communicated with the two sides of the front containing space.

[0008] According to some embodiments of the utility model, the front section of the longitudinal beam further includes a front end structure, the rear end of the arc-shaped structure is connected with the front end of the rear section of the longitudinal beam, the front end structure is connected with the front end of the arc-shaped structure, and the front end structure is configured to be inclined forward and downward relative to the arc-shaped structure.

[0009] According to some embodiments of the utility model, the front end structure is arranged to be lower than the rear section of the longitudinal beam, and the height difference H between the front end of the front end structure and the rear section of the longitudinal beam satisfies: 100mm≤H≤120mm.

[0010] According to some embodiments of the utility model, the vehicle cross beam is two and is a front cross beam and a rear cross beam respectively, the front cross beam is connected between the front end structures of the two frame longitudinal beams, and the rear cross beam is connected between the rear sections of the two frame longitudinal beams.

[0011] According to some embodiments of the utility model, the front cross beam is provided with a front motor suspension mounting point, each frame longitudinal beam is provided with a rear motor suspension mounting point at the connection position of the arc-shaped structure and the rear section of the longitudinal beam, and the front motor suspension mounting point and the two rear motor suspension mounting points are distributed in an isosceles triangle shape.

[0012] According to some embodiments of the utility model, the distance from the center of the avoiding space to the front end of the front section of the longitudinal beam is L1, and satisfies: 300mm≤L1≤350mm; and / or, the distance from the center of the avoiding space to the rear end of the rear section of the longitudinal beam is L2, and satisfies: 450mm≤L2≤490mm.

[0013] According to some embodiments of the utility model, the height difference between the highest point of the avoiding space and the lowest point of the front end of the front section of the longitudinal beam is L3, and satisfies: 125mm≤L3≤145mm.

[0014] The utility model also proposes a vehicle.

[0015] According to the vehicle of the utility model embodiment, including electric drive structure and the rear subframe of any one embodiment described above, the electric drive structure includes drive motor and speed reducer, the drive motor and the speed reducer are located in the electric drive containing space, the drive shaft of electric drive assembly passes through the avoiding space.

[0016] The vehicle and the rear subframe described above have the same advantages as the prior art, which will not be repeated here.

[0017] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the utility model will become apparent and easy to understand from the description of the embodiments combined with the following drawings, in which:

[0019] Figure 1 It is the structure schematic of rear subframe according to the utility model embodiment Figure One ;

[0020] Figure 2 It is the structure schematic of rear subframe according to the utility model embodiment Figure Two ;

[0021] Figure 3 It is the structure schematic of rear subframe according to the utility model embodiment Figure Three ;

[0022] Figure 4 It is the structure schematic of rear subframe according to the utility model embodiment Figure Four ;

[0023] Figure 5 It is the structure schematic of rear subframe according to the utility model embodiment Figure Five ;

[0024] Figure 6 It is the structure schematic of electric drive structure and rear subframe according to the utility model embodiment.

[0025] REFERENCE NUMERALS:

[0026] Rear subframe 100,

[0027] Frame crossbeam 1, front crossbeam 11, front motor suspension mounting point 111, rear crossbeam 12, rear motor suspension mounting point 121,

[0028] Frame rail 2, rail front section 21, arched structure 211, avoidance space 2111, front end structure 212, rail rear section 22,

[0029] Electric drive accommodation space 3, front accommodation space 31, rear accommodation space 32,

[0030] Electric drive structure 4, drive motor 41, drive shaft 411, speed reducer 42. DETAILED DESCRIPTION

[0031] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0033] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0034] Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle, i.e. the X direction; the left-right direction is the lateral direction of the vehicle, i.e. the Y direction; and the up-down direction is the vertical direction of the vehicle, i.e. the Z direction.

[0035] The following will be described with reference to Figures 1-6The rear subframe 100 according to the embodiment of the utility model, the rear subframe 100 effectively avoids the interference or collision of the drive shaft 411 and the frame longitudinal beam 2, so that the drive shaft 411 can keep a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0036] As Figures 1-6 The rear subframe 100 according to one embodiment of the utility model comprises at least one frame cross beam 1 and two frame longitudinal beams 2.

[0037] The frame cross beam 1 is used for connecting and reinforcing the two frame longitudinal beams 2 to improve the overall strength and rigidity of the rear subframe 100, thereby improving the overall stability and reliability of the rear subframe 100. The number of frame cross beams 1 can be one, two or more. The arrangement of multiple frame cross beams 1 can make the connection of the frame longitudinal beams 2 more stable, thereby further improving the overall strength and rigidity of the rear subframe 100.

[0038] The two frame longitudinal beams 2 are spaced apart along the lateral direction of the vehicle, that is, the two frame longitudinal beams 2 are spaced apart by a certain distance in the left-right direction of the vehicle. One frame longitudinal beam 2 is located on the left side, and the other frame longitudinal beam 2 is located on the right side to bear the frame on both sides and better transfer and disperse the force received by the vehicle under various working conditions. At least one frame cross beam 1 is connected between the two frame longitudinal beams 2, that is, the left end of the frame cross beam 1 is connected to the left frame longitudinal beam 2, and the right end of the frame cross beam 1 is connected to the right frame longitudinal beam 2. Therefore, the frame cross beam 1 is connected between the two frame longitudinal beams 2 to connect the two frame longitudinal beams 2 and reinforce the frame longitudinal beams 2 while supporting the frame in the lateral direction, thereby improving the overall strength and rigidity of the rear subframe 100. One, two or more frame cross beams 1 can be arranged between the two frame longitudinal beams 2 to form a more stable frame structure with the frame longitudinal beams 2, thereby further improving the overall stability and load capacity of the rear subframe 100.

[0039] Further, an electric drive containing space 3 is formed between the two frame longitudinal beams 2, as Figure 1 Since the two frame longitudinal beams 2 are spaced apart by a certain distance, a certain space, that is, the electric drive containing space 3, is formed between the two frame longitudinal beams 2. The electric drive containing space 3 is used to contain the electric drive structure 4 to ensure the normal operation of the electric drive structure 4 and its heat dissipation effect.

[0040] As Figure 1As shown, each vehicle frame rail 2 comprises a front rail section 21 and a rear rail section 22, at least part of the front rail section 21 is configured as an arch structure 211, the arch structure 211 is configured to arch upwards to form an avoidance space 2111 below the arch structure 211, the avoidance space 2111 is communicated with the electric drive containing space 3 and is used to avoid the drive shaft 411 of the electric drive assembly. Therefore, the drive motor 41 can be installed in the electric drive containing space 3 to ensure the normal operation of the drive motor 41, and the avoidance space 2111 can provide sufficient installation space for the drive shaft 411 of the electric drive assembly, so that the drive shaft 411 of the electric drive assembly can smoothly pass through the avoidance space 2111 to be power-connected with the wheel, thereby realizing the stable installation of the drive shaft 411, avoiding the installation interference between the drive shaft 411 and the vehicle frame rail 2, and improving the performance and efficiency of the electric drive structure 4.

[0041] It should be noted that, during the driving of the vehicle, when the wheel moves, the drive shaft 411 will also move due to the bouncing of the suspension system and the wheel, and the space and position that the drive shaft 411 may occupy under various working conditions, i.e. the movement envelope of the drive shaft 411, need to be considered. In other words, all the space and position that the drive shaft 411 may occupy due to the bouncing and steering of the wheel need to be considered, and the size of the avoidance space 2111 can be set according to the movement envelope of the drive shaft 411 to leave sufficient movement space for the drive shaft 411, i.e. the avoidance space 2111 can fully accommodate the movement range of the drive shaft 411, thereby effectively avoiding the movement interference or collision between the drive shaft 411 and the vehicle frame rail 2, so that the drive shaft 411 can maintain a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0042] Therefore, the setting of the avoidance space 2111 not only ensures the normal installation of the drive shaft 411 of the electric drive assembly, but also provides sufficient movement space for the drive shaft 411 of the electric drive assembly, thereby effectively avoiding the interference or collision between the drive shaft 411 and the vehicle frame rail 2, so that the drive shaft 411 can maintain a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0043] According to the rear subframe 100 of the embodiment of the utility model, by configuring at least part of the front rail section 21 as an arch structure 211 and forming an avoidance space 2111 below the arch structure 211 for avoiding the drive shaft 411 of the electric drive assembly, not only the normal installation of the drive shaft 411 of the electric drive assembly is ensured, but also sufficient movement space is provided for the drive shaft 411 of the electric drive assembly, thereby effectively avoiding the interference or collision between the drive shaft 411 and the vehicle frame rail 2, so that the drive shaft 411 can maintain a stable movement state under any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0044] In some embodiments, as shown in Figure 1 and Figure 5 The electric drive accommodation space 3 includes a front accommodation space 31 and a rear accommodation space 32, the front accommodation space 31 is communicated with the front side of the rear accommodation space 32, that is, the front accommodation space 31 is located at the front side, the rear accommodation space 32 is located at the rear side, and the front accommodation space 31 is communicated with the rear accommodation space 32 to facilitate the installation of structural components in the front accommodation space 31 and the rear accommodation space 32, respectively.

[0045] Further, as shown in Figure 1 and Figure 6 The front accommodation space 31 is formed between the front sections 21 of the two frame longitudinal beams 2, that is, the front accommodation space 31 is a space formed between the front sections 21 of the two frame longitudinal beams 2, and the front accommodation space 31 is used to accommodate the reducer 42 and the drive shaft 411, that is, the reducer 42 and the drive shaft 411 are installed and accommodated in the front of the rear subframe 100, the reducer 42 is an important structural component in the electric drive structure, used to reduce the rotational speed of the drive motor 41 and increase the torque to drive the wheels, the output torque of the reducer 42 can be transmitted to the wheels through the drive shaft 411 to ensure the stable driving of the vehicle.

[0046] The avoidance space 2111 is communicated with the front accommodation space 31, because the front section 21 of the longitudinal beam is an arch-shaped structure 211, which arches upward to form an avoidance space 2111 below, by communicating the avoidance space 2111 with the front accommodation space 31, the size of the front accommodation space 31 is increased to some extent, which is beneficial to better install and accommodate the reducer 42 and the drive shaft 411, at the same time, the drive shaft 411 is avoided from the frame longitudinal beam 2 so that it can be smoothly connected with the wheels to transmit power, and the drive shaft 411 can move freely in the avoidance space 2111 without being hindered by the frame longitudinal beam 2, interfering or colliding with the frame longitudinal beam 2, thereby ensuring the normal and stable operation of the reducer 42 and the drive shaft 411, reducing the friction loss of the drive shaft 411, especially when the wheels jump upward to drive the drive shaft 411 to move upward, which can effectively avoid the drive shaft 411 from moving upward to hit the front section 21 of the longitudinal beam to produce noise, damage, etc., and can also prevent the drive shaft 411 from moving forward and backward or in other directions to hit the front section 21 of the longitudinal beam to produce noise, damage, etc.

[0047] As shown in Figure 1 and Figure 6As shown, the rear accommodation space 32 is formed between the rear sections 22 of the two frame longitudinal beams 2, that is, the rear accommodation space 32 is a space formed between the rear sections 22 of the two frame longitudinal beams 2, and the rear accommodation space 32 is used to accommodate the drive motor 41, that is, the drive motor 41 is installed and accommodated in the rear part of the rear subframe 100, the drive motor 41 is the core component of the electric drive structure 4, and is used to provide power to drive the vehicle forward. The drive motor 41 can transmit power to the speed reducer 42, and then the power is reduced and increased in torque by the speed reducer 42, and then transmitted to the drive shaft 411, and the drive shaft 411 drives the wheels to rotate to realize the forward movement of the vehicle.

[0048] Therefore, by installing and accommodating the speed reducer 42 and the drive shaft 411 in the front accommodation space 31, and installing and accommodating the drive motor 41 in the rear accommodation space 32, the space between the frame longitudinal beams 2 is fully utilized to realize the reasonable distribution and installation of the electric drive structure 4 and the drive shaft 411, improve the space utilization, make the layout of the electric drive structure 4 more compact, and facilitate installation, disassembly and maintenance.

[0049] In some embodiments, the front sections 21 of the two frame longitudinal beams 2 are symmetrically distributed, that is, the shapes and sizes of the front sections 21 of the two frame longitudinal beams 2 are the same, and the positions are symmetrically distributed along the left-right direction. In this way, at least part of the front sections 21 of the two frame longitudinal beams 2 are configured as an arched structure 211, and an avoidance space 2111 is formed below the arched structure 211 of the front section 21 of the two frame longitudinal beams 2.

[0050] In addition, the avoidance spaces 2111 of the two frame longitudinal beams 2 are symmetrically communicated to the two sides of the front accommodation space 31, that is, the front accommodation space 31 is surrounded by the avoidance spaces 2111 on the left and right sides, and since the two avoidance spaces 2111 are communicated with the front accommodation space 31, the left and right two drive shafts 411 in the front accommodation space 31 can smoothly pass through the avoidance spaces 2111 to be power-connected with the left and right two wheels.

[0051] Therefore, by symmetrically distributing the front sections 21 of the frame longitudinal beams 2, the overall rigidity and stability of the rear subframe 100 are improved, so that the rear subframe 100 can better resist the influence of external force and torque during vehicle driving, and the generation of vibration and noise is reduced. By communicating the avoidance spaces 2111 of the two frame longitudinal beams 2 with the two sides of the front accommodation space 31, the two avoidance spaces 2111 and the front accommodation space 31 are communicated as one space, realizing efficient utilization of the internal space of the frame, providing sufficient avoidance space 2111 for the left and right two drive shafts 411, so that the left and right two drive shafts 411 can pass through the left and right two avoidance spaces 2111 respectively to be power-connected with the left and right two wheels.

[0052] In some embodiments, as shown in FIG. 1,Figure 1 、 Figure 2 、 Figure 4 and Figure 6 As shown in FIG. 1, the front end structure 212 is connected to the rear end of the arch structure 211, and the front end structure 212 is connected to the front end of the rear section 22 of the longitudinal beam 2, so that the arch structure 211, the front end structure 212, and the rear section 22 of the longitudinal beam 2 are connected as a whole, and the arch structure 211 is tightly connected between the rear section 22 of the longitudinal beam 2 and the front end structure 212 to form a whole structure of the longitudinal beam 2 of the vehicle frame, thereby ensuring the structural continuity of the rear subframe 100, and facilitating the improvement of the overall rigidity and stability of the rear subframe 100.

[0053] In some embodiments, as shown in FIG. 1, the front end structure 212 is connected to the rear end of the arch structure 211, and the front end structure 212 is connected to the front end of the rear section 22 of the longitudinal beam 2, so that the arch structure 211, the front end structure 212, and the rear section 22 of the longitudinal beam 2 are connected as a whole, and the arch structure 211 is tightly connected between the rear section 22 of the longitudinal beam 2 and the front end structure 212 to form a whole structure of the longitudinal beam 2 of the vehicle frame, thereby ensuring the structural continuity of the rear subframe 100, and facilitating the improvement of the overall rigidity and stability of the rear subframe 100.

[0054] In some embodiments, as shown in FIG. 1, the front end structure 212 is connected to the rear end of the arch structure 211, and the front end structure 212 is connected to the front end of the rear section 22 of the longitudinal beam 2, so that the arch structure 211, the front end structure 212, and the rear section 22 of the longitudinal beam 2 are connected as a whole, and the arch structure 211 is tightly connected between the rear section 22 of the longitudinal beam 2 and the front end structure 212 to form a whole structure of the longitudinal beam 2 of the vehicle frame, thereby ensuring the structural continuity of the rear subframe 100, and facilitating the improvement of the overall rigidity and stability of the rear subframe 100. Figure 2 In some embodiments, as shown in FIG. 1, the front end structure 212 is connected to the rear end of the arch structure 211, and the front end structure 212 is connected to the front end of the rear section 22 of the longitudinal beam 2, so that the arch structure 211, the front end structure 212, and the rear section 22 of the longitudinal beam 2 are connected as a whole, and the arch structure 211 is tightly connected between the rear section 22 of the longitudinal beam 2 and the front end structure 212 to form a whole structure of the longitudinal beam 2 of the vehicle frame, thereby ensuring the structural continuity of the rear subframe 100, and facilitating the improvement of the overall rigidity and stability of the rear subframe 100.

[0055] Figure 2 In some embodiments, as shown in FIG. 1, the front end structure 212 is connected to the rear end of the arch structure 211, and the front end structure 212 is connected to the front end of the rear section 22 of the longitudinal beam 2, so that the arch structure 211, the front end structure 212, and the rear section 22 of the longitudinal beam 2 are connected as a whole, and the arch structure 211 is tightly connected between the rear section 22 of the longitudinal beam 2 and the front end structure 212 to form a whole structure of the longitudinal beam 2 of the vehicle frame, thereby ensuring the structural continuity of the rear subframe 100, and facilitating the improvement of the overall rigidity and stability of the rear subframe 100.

[0056] ​In other words, the height difference H between the front end of the front structure 212 and the rear section 22 of the longitudinal beam can be set to 100mm, 102mm, 104mm, 106mm, 108mm, 109mm, 110.5mm, 111mm, 112mm, 114mm, 116mm, 118mm, 120mm, or other values ​​within the range of 100mm to 120mm. It can be understood that the larger the height difference H between the front end of the front structure 212 and the rear section 22 of the longitudinal beam, the lower the height of the front end of the front structure 212 and the higher the height of the rear section 22 of the longitudinal beam. Conversely, the smaller the height difference H between the front end of the front structure 212 and the rear section 22 of the longitudinal beam, the closer the heights of the front end of the front structure 212 and the rear section 22 of the longitudinal beam are.

[0057] It should be noted that the front upper control arm and the front lower control arm are installed on the front section 21 of the longitudinal beam, and the rear upper control arm, the rear lower control arm, and the rear suspension toe bar are installed on the rear section 22 of the longitudinal beam. The height difference H between the front end of the front structure 212 and the rear section 22 of the longitudinal beam depends on the relative positions of the front upper control arm and the front lower control arm, the rear upper control arm and the rear lower control arm, and the rear suspension toe bar. That is, it is necessary to ensure the normal installation and stable movement of the front upper control arm and the front lower control arm, the rear upper control arm and the rear lower control arm, and the rear suspension toe bar, and to avoid motion interference between them.

[0058] Therefore, by setting the height difference H between the front end of the front end structure 212 and the rear section 22 of the longitudinal beam within a reasonable range of 100mm to 120mm, the front end structure 212 can be smoothly and reliably connected to the vehicle body. This also ensures the normal installation and stable movement of the front upper control arm and front lower control arm, the rear upper control arm and rear lower control arm, and the rear suspension toe bar, avoiding movement interference between them, thereby ensuring the stable and safe driving of the vehicle.

[0059] In some embodiments, such as Figure 1 and Figure 4 As shown, there are two crossbeams 1 of the frame, namely a front crossbeam 11 and a rear crossbeam 12. The front crossbeam 11 is located on the front side, and the rear crossbeam 12 is located on the rear side, with a certain distance between them. The front crossbeam 11 connects between the front end structures 212 of the two frame longitudinal beams 2 to connect and reinforce the front part of the two frame longitudinal beams 2, thereby improving the structural strength and rigidity of the front part of the frame longitudinal beams 2. In addition, since the front crossbeam 11 is connected between the front end structures 212 of the two frame longitudinal beams 2, that is, in front of the clearance space 2111, it can avoid interference of the front crossbeam 11 with the installation of the drive shaft 411.

[0060] The rear cross beam 12 is connected between the rear sections 22 of the two frame longitudinal beams 2 to connect and reinforce the rear portions of the two frame longitudinal beams 2, thereby improving the structural strength and rigidity of the rear portions of the frame longitudinal beams 2. Thus, by connecting the front cross beam 11 and the rear cross beam 12 between the two frame longitudinal beams 2, the overall structural strength and rigidity of the rear subframe 100 are effectively improved.

[0061] In some embodiments, the front cross beam 11 and the rear cross beam 12 are both lower than the inner top point of the avoidance space 2111, i.e., the upper surface of the front cross beam 11 and the rear cross beam 12 is lower than the height of the inner top point of the avoidance space 2111 and is located below the inner top point of the avoidance space 2111. Thus, the size of the avoidance space 2111 in the up-down direction can be increased while ensuring sufficient structural strength of the front cross beam 11 and the rear cross beam 12, which facilitates the free movement of the drive shaft 411 in the avoidance space 2111 and further avoids interference or collision between the drive shaft 411 and the lower surface of the arch structure 211.

[0062] Of course, the front cross beam 11 and the rear cross beam 12 can also be arranged to be higher than the inner top point of the avoidance space 2111, or the height of the front cross beam 11 and the rear cross beam 12 can be the same as that of the inner top point of the avoidance space 2111, which can be flexibly set according to the situation and is not limited to the embodiments described herein.

[0063] In some embodiments, the front cross beam 11 is provided with a front motor suspension mounting point 111, which is mainly used for mounting a front motor suspension, so that the front motor suspension can support the drive motor 41 on the front side and be connected with the front cross beam 11, thereby ensuring that the drive motor 41 can be stably mounted on the vehicle and avoiding movement of the drive motor 41 in the front-rear direction and interference or collision with surrounding parts, thereby ensuring normal operation of the drive motor 41.

[0064] Each frame longitudinal beam 2 is provided with a rear motor suspension mounting point 121 at the connection between the arch structure 211 and the rear section 22 of the longitudinal beam, which is mainly used for mounting a rear motor suspension, so that the rear motor suspension can support the drive motor 41 on the left and right sides and be connected with the two frame longitudinal beams 2, thereby ensuring that the drive motor 41 can be stably mounted on the vehicle and avoiding movement of the drive motor 41 in the left-right direction and interference or collision with surrounding parts, thereby ensuring normal operation of the drive motor 41.

[0065] The front motor suspension mounting point 111 and the two rear motor suspension mounting points 121 are in isosceles triangle distribution, that is, the two rear motor suspension mounting points 121 are symmetrically distributed left and right, and the front motor suspension mounting point 111 is located in the middle of the front cross beam 11, so that the three mounting points are in isosceles triangle distribution. Since the triangle has stability, the overall stability and reliable installation of the driving motor 41 are effectively ensured, the displacement amount of the driving motor 41 in the front-rear direction and the left-right direction is limited, interference or collision between the driving motor 41 and the surrounding parts to cause damage or noise is avoided, the normal work of the driving motor 41 is effectively ensured, and the service life of the driving motor 41 is prolonged.

[0066] In addition, in practice, the centroid of the driving motor 41 can be made to fall within the plane of the isosceles triangle formed by the front motor suspension mounting point 111 and the two rear motor suspension mounting points 121, that is, the centroid of the driving motor 41 is made to be coplanar with the plane of the isosceles triangle formed by the front motor suspension mounting point 111 and the two rear motor suspension mounting points 121, which can further improve the installation stability of the driving motor 41 and further avoid excessive swinging of the driving motor 41 during operation to generate excessive displacement to interfere or collide with surrounding parts.

[0067] Specifically, as shown in Figure 1 and Figure 4 , the front mounting hole is provided at the middle position of the front cross beam 11, the front motor suspension mounting point 111 can be press-fitted in the front mounting hole, the two rear mounting holes are provided at the connection between the arched structure 211 and the longitudinal beam rear section 22, and the two rear mounting holes are symmetrically distributed along the left-right direction, and the two rear motor suspension mounting points 121 can be press-fitted in the rear mounting holes, so that the front motor suspension mounting point 111 and the two rear motor suspension mounting points 121 are in isosceles triangle distribution.

[0068] In some embodiments, as shown in Figure 2 , the distance from the center of the avoidance space 2111 to the front end of the longitudinal beam front section 21 is L1, and satisfies: 300mm≤L1≤350mm.

[0069] That is, the distance L1 from the center of the avoidance space 2111 to the front end of the longitudinal beam front section 21 can be set to 300mm, 302mm, 303.5mm, 306mm, 310mm, 314mm, 316.7mm, 320mm, 324mm, 328mm, 330mm, 332mm, 335mm, 339mm, 340mm, 342mm, 344mm, 346mm, 348mm, 350mm or other values within 300mm to 350mm.

[0070] The distance from the center of the avoidance space 2111 to the front end of the front section 21 of the longitudinal beam is L1, which is set depending on the longitudinal position of the drive shaft 411 on the whole vehicle, the size of the drive shaft 411, and the mounting position of the output shaft of the drive motor 41. By setting the distance from the center of the avoidance space 2111 to the front end of the front section 21 of the longitudinal beam as L1 within a reasonable range of 300 mm to 350 mm, the smooth installation and normal operation of the drive shaft 411 and the output shaft of the drive motor 41 can be effectively ensured, and the compactness of the electric drive structure 4 is improved.

[0071] In some embodiments, as shown in FIG. 11, the height difference between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section 21 of the longitudinal beam is L3, and satisfies: 125 mm≤L3≤145 mm. Figure 2

[0072] That is, the distance L2 from the center of the avoidance space 2111 to the rear end of the rear section 22 of the longitudinal beam can be set to 450 mm, 452 mm, 454 mm, 456 mm, 460 mm, 464 mm, 466 mm, 468 mm, 470 mm, 472 mm, 474 mm, 476 mm, 478 mm, 480 mm, 482 mm, 484 mm, 486 mm, 488 mm, 490 mm, or other values within 450 mm to 490 mm.

[0073] The distance L2 from the center of the avoidance space 2111 to the rear end of the rear section 22 of the longitudinal beam is set depending on the longitudinal position of the drive shaft 411 on the whole vehicle, the size of the drive shaft 411, the mounting position of the rear cross beam 12, and the mounting position of the rear upper control arm on the whole vehicle. By setting the distance from the center of the avoidance space 2111 to the rear end of the rear section 22 of the longitudinal beam as L2 within a reasonable range of 450 mm to 4900 mm, the smooth installation of the drive shaft 411, the rear cross beam 12, and the rear upper control arm can be effectively ensured, the space is effectively utilized, installation interference and motion interference of various structural components are avoided, and the compactness of the rear subframe 100 and the electric drive structure 4 is effectively improved, and the normal operation and motion of the drive shaft 411 and the rear upper control arm and other structural components are ensured.

[0074] In some embodiments, as shown in FIG. 11, the height difference between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section 21 of the longitudinal beam is L3, and satisfies: 125 mm≤L3≤145 mm. Figure 2

[0075] ​​That is, the height difference L3 between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section of the longitudinal beam 21 can be set to 125mm, 126mm, 127mm, 128mm, 129mm, 130mm, 131mm, 132mm, 133mm, 134mm, 135mm, 136mm, 137mm, 138mm, 139mm, 140mm, 141mm, 142mm, 143mm, 144mm, 145mm or other values within 125mm to 145mm.

[0076] It can be understood that the greater the height difference L3 between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section of the longitudinal beam 21, that is, the higher the highest point of the avoidance space 2111 and the lower the lowest point of the front end of the front section of the longitudinal beam 21, the larger the avoidance space 2111 will be, but this will cause the arch-shaped structure 211 to arch upward to a greater extent, thereby causing the structure to be complex, the overall size of the rear subframe 100 in the vehicle up-down direction to increase, and the overall weight of the rear subframe 100 to increase.

[0077] Therefore, by setting the height difference L3 between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section of the longitudinal beam 21 within a reasonable range of 125mm to 145mm, the height difference L3 between the highest point of the avoidance space 2111 and the lowest point of the front end of the front section of the longitudinal beam 21 can be made smaller while effectively reducing the overall size of the rear subframe 100 in the vehicle up-down direction, thereby making the structure of the rear subframe 100 simpler and lighter in weight, and improving the load transfer efficiency.

[0078] The utility model discloses still propose a kind of vehicle.

[0079] According to the vehicle of the utility model embodiment, the electric drive structure 4 includes a drive motor 41 and a speed reducer 42, and the drive motor 41 and the speed reducer 42 are located in the electric drive containing space 3.

[0080] The vehicle of the embodiment can be a pure electric vehicle, a plug-in hybrid electric vehicle, a fuel cell electric vehicle and a hybrid electric vehicle, etc.

[0081] Specifically, the output shaft of the drive motor 41 can be power-connected with the input end of the speed reducer 42 to transmit the power output by the drive motor 41 to the speed reducer 42, and the speed reducer 42 is used to reduce the speed and increase the torque, and the output end of the speed reducer 42 can be power-connected with the drive shaft 411 to transmit the power output by the speed reducer 42 to the drive shaft 411, so as to realize the power transmission from the drive motor 41 to the drive shaft 411, and further drive the wheels to rotate.

[0082] As Figure 6 shown, the driving motor 41 and the speed reducer 42 are both located in the electric drive containing space 3 to make full use of the space to realize reasonable arrangement of the driving motor 41 and the speed reducer 42 and efficient transmission of power, wherein the driving shaft 411 of the electric drive assembly penetrates through the avoiding space 2111, that is, passes through the avoiding space 2111 from the electric drive containing space 3, and then is connected with the wheel power to realize driving of the wheel.

[0083] Wherein, by configuring at least part of the longitudinal beam front section 21 as an arch-shaped structure 211, and forming an avoiding space 2111 for avoiding the driving shaft 411 of the electric drive assembly below the arch-shaped structure 211, not only the normal installation of the driving shaft 411 of the electric drive assembly is ensured, but also sufficient movement space is provided for the driving shaft 411 of the electric drive assembly 1, so that interference or collision between the driving shaft 411 and the frame longitudinal beam 2 is effectively avoided, so that the driving shaft 411 can keep stable movement state in any working condition, thereby ensuring the stability and safe driving of the vehicle.

[0084] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A rear subframe, characterized in that, include: At least one frame crossbeam; Two frame longitudinal beams are distributed laterally along the vehicle, and at least one frame crossbeam is connected between the two frame longitudinal beams; An electric drive housing space is formed between the two frame longitudinal beams. Each frame longitudinal beam includes a front section and a rear section. At least a portion of the front section of the longitudinal beam is constructed as an arched structure. The arched structure is constructed to arch upwards to form a clearance space below the arched structure. The clearance space is connected to the electric drive housing space and is used to clear the drive shaft of the electric drive assembly.

2. The rear subframe according to claim 1, characterized in that, The electric drive housing includes a front housing and a rear housing. The front housing is connected to the front side of the rear housing and is formed between the front sections of the two longitudinal beams of the frame. The rear housing is formed between the rear sections of the two longitudinal beams of the frame. The front housing is used to house the reducer and the drive shaft. The clearance space is connected to the front housing and the rear housing is used to house the drive motor.

3. The rear subframe according to claim 2, characterized in that, The front sections of the two frame longitudinal beams are symmetrically distributed, and the clearance spaces of the two frame longitudinal beams are symmetrically connected to both sides of the front accommodating space.

4. The rear subframe according to any one of claims 1-3, characterized in that, The front section of the longitudinal beam also includes a front end structure. The rear end of the arched structure is connected to the front end of the rear section of the longitudinal beam. The front end structure is connected to the front end of the arched structure, and the front end structure is constructed to be inclined forward and downward relative to the arched structure.

5. The rear subframe according to claim 4, characterized in that, The front end structure is set to be lower than the rear section of the longitudinal beam, and the height difference H between the front end of the front end structure and the rear section of the longitudinal beam satisfies: 100mm≤H≤120mm.

6. The rear subframe according to claim 4, characterized in that, The vehicle has two crossbeams, namely a front crossbeam and a rear crossbeam. The front crossbeam is connected between the front end structures of the two frame longitudinal beams, and the rear crossbeam is connected between the rear sections of the two frame longitudinal beams.

7. The rear subframe according to claim 6, characterized in that, The front crossbeam is provided with a front motor mounting point, and each of the frame longitudinal beams is provided with a rear motor mounting point at the connection between the arch structure and the rear section of the longitudinal beam. The front motor mounting point and the two rear motor mounting points are distributed in an isosceles triangle.

8. The rear subframe according to any one of claims 1-3, characterized in that, The distance from the center of the clearance space to the front end of the longitudinal beam is L1, and satisfies: 300mm≤L1≤350mm; And / or, the distance from the center of the clearance space to the rear end of the longitudinal beam is L2, and satisfies: 450mm≤L2≤490mm.

9. The rear subframe according to any one of claims 1-3, characterized in that, The height difference between the highest point of the clearance space and the lowest point of the front end of the longitudinal beam is L3, and satisfies: 125mm≤L3≤145mm.

10. A vehicle, characterized in that, The device includes an electric drive structure and a rear subframe as described in any one of claims 1-9. The electric drive structure includes a drive motor and a reducer, both of which are located within the electric drive housing space. The drive shaft of the electric drive assembly passes through the clearance space.

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