Auxiliary frame assembly and vehicle

Abstract

The invention discloses an auxiliary frame assembly and a vehicle. The auxiliary frame assembly comprises a first cross beam, a second cross beam, a longitudinal beam and a circular tube beam, wherein the first cross beam and the second cross beam are spaced from each other; the longitudinal beams are connected with the first cross beam and the second cross beam respectively, and the two longitudinal beams are arranged in a spaced mode; the circular tube beam is arranged on the side, away from the first cross beam, of the second cross beam and connected with the two longitudinal beams. The first cross beam is provided with a suspension support integrally formed with the first cross beam and a first installation area integrated on the surface of the first cross beam. A second mounting area integrated on the surface of the longitudinal beam is arranged on the longitudinal beam; and a weight reduction area is formed between the circular tube beam and the second cross beam. According to the auxiliary frame assembly, the weight reduction area is arranged between the circular tube beam and the second cross beam, and the suspension support on the first cross beam, the first installation area, the second installation area on the longitudinal beam and other positions are integrally formed, so that the weight of the auxiliary frame assembly is reduced, and light weight of a vehicle can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of vehicles, and more particularly to a subframe assembly and a vehicle. Background Art

[0002] The subframe can improve the body rigidity and suspension performance, and reduce the noise and vibration of the vehicle. However, the subframe structure in the related art is complex and heavy, which is not conducive to the lightweight of the whole vehicle. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, an object of the present invention is to provide a subframe assembly and a vehicle. According to the subframe assembly of the present invention, through the integrated molding design of the weight reduction area between the circular tube beam and the second cross beam, the suspension bracket and the first mounting area on the first cross beam, and the second mounting area on the longitudinal beam, etc., the weight and structural complexity of the subframe assembly are reduced, which helps to achieve the lightweight of the vehicle.

[0004] The present invention also provides a vehicle including the above subframe assembly.

[0005] The subframe assembly according to the present invention includes a first cross beam, a second cross beam, longitudinal beams, and a circular tube beam. The first cross beam and the second cross beam are spaced apart from each other. The longitudinal beams are respectively connected to the first cross beam and the second cross beam, and the longitudinal beams are configured to be two spaced apart from each other. The circular tube beam is disposed on a side of the second cross beam away from the first cross beam and is respectively connected to the two longitudinal beams. Wherein, a suspension bracket integrally formed with the first cross beam and a first mounting area integrated on the surface of the first cross beam are provided on the first cross beam. A second mounting area integrated on the surface of the longitudinal beam is provided on the longitudinal beam. A weight reduction area is formed between the circular tube beam and the second cross beam.

[0006] According to the subframe assembly of the present invention, the mounting bracket is integrally formed with the first cross member. The process is simple, and the assembly of the vibration damping mount can be satisfied without an additional support structure, simplifying the complexity of the mounting bracket structure, reducing the material and manufacturing costs, reducing the number of components, and thus reducing the weight of the overall subframe assembly. The first cross member is integrated with the first mounting area, and the longitudinal beam is integrated with the second mounting area. The assembly of the subframe assembly is realized through the first mounting area and the second mounting area, without an additional mounting plate structure, reducing the number of components, reducing the weight and cost of the subframe assembly, and facilitating the lightweight of the vehicle. In addition, a circular tube beam is used instead of the structure where two plates are buckled in the traditional subframe, reducing the structural complexity and weight. Moreover, the form of a single circular tube beam has higher structural strength, improving the structural strength of the entire subframe assembly. At the same time, a weight reduction area is formed between the circular tube beam and the second cross member. The weight reduction area can be a hollowed-out structure, that is, hollowed out between the circular tube beam and the second cross member on the premise of ensuring the structural strength and function, which can more effectively reduce the weight of the subframe assembly, contribute to reducing the overall mass of the vehicle, realizing the lightweight of the vehicle, and improving the fuel economy and power performance.

[0007] According to an embodiment of the present invention, a battery power module is provided at the rear side of the subframe assembly, an electric drive assembly is provided at the top of the subframe assembly, a battery wiring harness that crosses the subframe assembly and is connected to the electric drive assembly is provided on the battery power module, and a gap suitable for the deformation of the battery wiring harness is formed between the circular tube beam and the power battery module.

[0008] According to an embodiment of the present invention, a positioning line is formed on the longitudinal beam at the rear side of the second mounting area, and the distance between the circular tube beam and the positioning line is d, and it satisfies: 15mm ≤ d ≤ 25mm.

[0009] According to an embodiment of the present invention, a fixing bracket for fixing the battery wiring harness is provided on the circular tube beam.

[0010] According to an embodiment of the present invention, a plurality of the mounting brackets are configured to be spaced apart on the first cross member. Each mounting bracket includes: a bracket body, the bracket body is configured to be two symmetrically arranged, and the two bracket bodies are respectively integrally formed with the first cross member, and a mounting position for mounting a vehicle vibration damping mount is formed between the two bracket bodies.

[0011] According to an embodiment of the present invention, a reinforcing flange is formed on the bracket body, the reinforcing flange is integrally formed with the first cross member, and the reinforcing flanges of adjacent two bracket bodies extend in directions away from each other.

[0012] According to an embodiment of the present invention, the first mounting area is adjacent to the end of the first cross beam, and a first mounting hole for the assembly of the subframe assembly is formed in the first mounting area.

[0013] According to an embodiment of the present invention, the second mounting area is adjacent to the connection area between the longitudinal beam and the circular tube beam, and a second mounting hole for the assembly of the subframe assembly is formed in the second mounting area.

[0014] According to an embodiment of the present invention, a deformation area is formed on the surface of the longitudinal beam between the second mounting area and the second cross beam, and the deformation area penetrates the longitudinal beam in the width direction.

[0015] The vehicle according to the present invention will be briefly described below.

[0016] The vehicle according to the present invention includes the subframe assembly in the above embodiment. Since the vehicle according to the present invention is provided with the subframe assembly in the above embodiment, the subframe assembly reduces its own weight through the weight reduction area between the circular tube beam and the second cross beam, as well as the design of the suspension bracket and the two mounting areas, realizing the lightweight of the vehicle.

[0017] The additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. Brief Description of the Drawings

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and be easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural diagram of a subframe assembly according to an embodiment of the present invention;

[0020] Figure 2 is an assembly schematic diagram of a subframe, a power battery module and an electric drive assembly according to an embodiment of the present invention;

[0021] Figure 3 is a schematic diagram of an engine under shield and a body chassis shield according to an embodiment of the present invention.

[0022] Reference Signs:

[0023] Subframe assembly 1;

[0024] First cross beam 11, suspension bracket 111, bracket body 1111, reinforcing flange 1112, suspension mounting position 1113, first mounting area 112, first mounting hole 1121;

[0025] Second cross beam 12;

[0026] Longitudinal beam 13, second installation area 131, second installation hole 1311, deformation area 132;

[0027] Round tube beam 14, fixed bracket 141;

[0028] Weight reduction area 15;

[0029] Battery power module 16, battery wiring harness 161, electric drive assembly 17;

[0030] Positioning line 10;

[0031] Engine under shield 21, vehicle body chassis shield 22. Specific embodiments

[0032] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where 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 drawings are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0033] The subframe can improve the body rigidity and suspension performance, and reduce the noise and vibration of the vehicle. However, the subframe structure in the related art is complex and heavy, which is not conducive to the lightweight of the whole vehicle.

[0034] Reference will be made below Figures 1 - 3 to describe a subframe assembly according to an embodiment of the present invention.

[0035] The subframe assembly 1 according to the present invention includes a first cross beam 11, a second cross beam 12, longitudinal beams 13 and round tube beams 14. The first cross beam 11 and the second cross beam 12 are spaced apart from each other; the longitudinal beams 13 are respectively connected to the first cross beam 11 and the second cross beam 12, and the longitudinal beams 13 are configured to be two spaced apart from each other; the round tube beams 14 are disposed on a side of the second cross beam 12 away from the first cross beam 11 and are respectively connected to the two longitudinal beams 13; wherein, a suspension bracket 111 integrally formed with the first cross beam 11 and a first installation area 112 integrated on the surface of the first cross beam 11 are provided on the first cross beam 11; a second installation area 131 integrated on the surface of the longitudinal beam 13 is provided on the longitudinal beam 13; a weight reduction area 15 is formed between the round tube beam 14 and the second cross beam 12.

[0036] According to the subframe assembly 1 of the present invention, a first cross beam 11 and a second cross beam 12 are arranged at intervals from each other. One end of the first cross beam 11 and one end of the second cross beam 12 are respectively connected to a longitudinal beam 13, and the other end of the first cross beam 11 and the other end of the second cross beam 12 are respectively connected to another longitudinal beam 13. At the same time, a round tube beam 14 is arranged on the side of the second cross beam 12 away from the first cross beam 11 and is respectively connected to the two longitudinal beams 13, jointly forming a stable frame structure, improving the overall strength and stability of the subframe assembly 1, and helping to better withstand various forces and vibrations during vehicle driving.

[0037] A suspension bracket 111 integrally formed with the first cross beam 11 is arranged on the first cross beam 11. The suspension bracket 111 is a structure for the subframe to assemble a vibration damping suspension. In the existing subframes, a bracket for assembling a vibration damping suspension is usually provided. However, when setting the bracket for the vibration damping suspension in the existing subframes, a split form is usually adopted, that is, a bracket is fixed to the cross beam, and at the same time, two supporting structures support on both sides of the bracket. Such a form complicates the overall structure of the bracket, increases the material usage and manufacturing cost. The suspension bracket 111 of the present invention is integrally formed with the first cross beam 11, with a simple process, and can meet the assembly of the vibration damping suspension without an additional supporting structure, simplifying the complexity of the structure of the suspension bracket 111, reducing the material and manufacturing cost, reducing the number of parts, and thus reducing the weight of the overall subframe assembly 1.

[0038] A first installation area 112 is also integrated on the first cross beam 11. The first installation area 112 is mainly used for the assembly of the subframe and the vehicle body or the assembly of the subframe and other structures. In the related art, in common subframes, an additional mounting plate is usually provided, and holes or other structures for assembly are machined on the mounting plate. However, the additional mounting plate structure will increase the weight of the entire subframe. In the subframe assembly 1 of the present invention, by integrating the first installation area 112 on the first cross beam 11, the assembly of the subframe assembly 1 is realized through the first installation area 112, without an additional mounting plate structure, reducing the number of parts, reducing the weight and cost of the subframe assembly 1, and being beneficial to realizing the lightweight of the vehicle. Similarly, a second installation area 131 integrated on the surface of the longitudinal beam 13 is arranged on the longitudinal beam 13. The second installation area 131 is similar to the first installation area 112 and can also be used for the assembly of the subframe assembly 1 itself or the assembly with other structures. The integrated design reduces unnecessary installation structures, realizes the lightweight of the subframe assembly 1, and moreover, the specific installation area is convenient for the staff to operate and can improve the assembly efficiency of the subframe assembly 1.

[0039] In addition, in the related art, the subframe assembly 1 usually adopts a form of buckling upper and lower plates at the position of the round tube beam 14, and the two buckled plates are connected to the second cross beam 12. In the present invention, the round tube beam 14 is used to replace the structure of the two buckled plates, reducing the structural complexity and weight, and the structural strength of the form of a single round tube beam 14 is higher. At the same time, a weight reduction area 15 is formed between the round tube beam 14 and the second cross beam 12. The weight reduction area 15 can be a hollowed-out structure, that is, under the premise of ensuring the structural strength and function, the area between the round tube beam 14 and the second cross beam 12 is hollowed out, which can more effectively reduce the weight of the subframe assembly 1, contribute to reducing the overall mass of the vehicle, achieving the lightweight of the vehicle, and improving the fuel economy and power performance.

[0040] According to an embodiment of the present invention, a battery power module 16 is disposed at the rear side of the subframe assembly 1, an electric drive assembly 17 is disposed on the top of the subframe assembly 1, a battery wire harness 161 that crosses the subframe assembly 1 and is connected to the electric drive assembly 17 is disposed on the battery power module 16, and a gap suitable for the deformation of the battery wire harness 161 is formed between the round tube beam 14 and the power battery module.

[0041] During the assembly of the whole vehicle, the battery power module 16 can be disposed at the rear side of the subframe assembly 1, and the electric drive assembly 17 can be disposed on the top. This layout makes full use of the space at the bottom of the vehicle, realizes the compact integration of the power system and the energy storage system, and helps to improve the overall layout efficiency and space utilization rate of the vehicle. The battery wire harness 161 that crosses the subframe assembly 1 and is connected to the electric drive assembly 17 is disposed on the battery power module 16, ensuring the stable and reliable electrical connection between the battery power module 16 and the electric drive assembly 17, reducing the length and complexity of the wire harness, reducing the failure risk, and improving the reliability and safety of the system. As Figure 2 shown, a gap suitable for the deformation of the battery wire harness 161 is formed between the round tube beam 14 and the power battery module. Since the battery wire harness 161 extends from the battery power module 16 to the electric drive assembly 17 on the top of the subframe assembly 1, that is, the battery wire harness 161 will bend in space. Therefore, the gap between the round tube beam 14 and the power battery module can provide a deformation space for the battery wire harness 161, avoiding the interference of the subframe assembly 1 on the battery wire harness 161, and preventing the battery wire harness 161 from rubbing against the subframe assembly 1. It also allows the additional deformation of the battery wire harness 161 caused by factors such as vibration during the driving of the vehicle to be released, avoiding the damage of the wire harness due to excessive stretching or compression, and improving the safety of the vehicle.

[0042] According to an embodiment of the present invention, a positioning line 10 is formed on the longitudinal beam 13 at the rear side of the second installation area 131, and the distance between the round tube beam 14 and the positioning line 10 is d, and it satisfies: 15mm ≤ d ≤ 25mm. As Figure 1As shown, the positioning line 10 can be understood as a reference datum on the longitudinal beam 13, and its function is to make an intuitive comparison with the subframe in the related art. In the existing subframe assembly 1, the round tube beam 14 is usually not provided, but instead, the form of buckling two upper and lower plates is adopted, and the two upper and lower plates are integrally connected to the second cross beam 12. It can also be simply understood that there is a gap between the rear end of the second cross beam 12 (i.e., the position of the positioning line 10 in the present invention) and the battery power module 16 in the existing subframe. However, after the existing subframe is assembled, the width of the gap is small, and the deformation space of the battery harness 161 is small. Therefore, the bending degree of the battery harness 161 is large, which will affect the sealing of the battery harness 161 plug. In the subframe assembly 1 of the present invention, the round tube beam 14 is provided, and a gap is defined between the round tube beam 14 and the battery power module 16, and there is a distance d between the round tube beam 14 and the positioning line 10. It can also be simply understood that the round tube beam 14 is moved forward by d in the vehicle body X, where 15 mm ≤ d ≤ 25 mm. Preferably, d = 20 mm, that is, compared with the existing subframe assembly 1, the round tube beam 14 in the present invention is moved forward and upward by 20 mm in the vehicle body X, increasing the width of the gap, solving the problem of sealing failure of the battery harness 161 plug due to the small gap, and improving the safety of the vehicle.

[0043] According to an embodiment of the present invention, a fixing bracket 141 for fixing the battery harness 161 is provided on the round tube beam 14. The fixing bracket 141 can support the battery harness 161 and provide a fixing point for the battery harness 161, ensuring that the battery harness 161 can remain stable during the driving of the vehicle and will not loosen or shift due to factors such as vibration and bump, thereby improving the reliability and safety of the electrical connection.

[0044] According to an embodiment of the present invention, a plurality of suspension brackets 111 are configured to be spaced apart on the first cross beam 11. Each suspension bracket 111 includes: a bracket body 1111, and the bracket body 1111 is configured to be two symmetrically arranged. The two bracket bodies 1111 are integrally formed with the first cross beam 11 respectively, and a suspension mounting position 1113 for mounting the vehicle shock absorber suspension is formed between the two bracket bodies 1111. As Figure 1As shown, multiple suspension brackets 111 can be provided on the first crossbeam 11. The bracket bodies 1111 of each suspension bracket 111 are configured as two that are symmetrically arranged with each other, and the two bracket bodies 1111 are integrally formed with the first crossbeam 11 respectively, significantly enhancing the structural stability and overall strength of the subframe assembly 1. The integrally formed design reduces the connection points and potential stress concentration points in the traditional connection method, making the subframe more stable and reliable when bearing various forces and vibrations during vehicle driving. The suspension mounting position 1113 formed between the two bracket bodies 1111 provides a dedicated installation space for the vehicle vibration damper suspension, not only making the installation of the vibration damper suspension more convenient and accurate, but also helping to ensure that the vibration damper suspension can work properly during vehicle driving, effectively absorbing and reducing vibrations, and improving ride comfort and vehicle controllability. Since the bracket body 1111 and the first crossbeam 11 adopt an integrally formed design, the connecting parts and assembly steps in the assembly process are reduced, thereby improving production efficiency. At the same time, the integrally formed design also helps to reduce material waste and manufacturing costs, making the subframe assembly 1 more economical and practical while maintaining high performance.

[0045] According to an embodiment of the present invention, a reinforcing flange 1112 is formed on the bracket body 1111. The reinforcing flange 1112 is integrally formed with the first crossbeam 11, and the reinforcing flanges 1112 of adjacent two bracket bodies 1111 extend in directions away from each other. By forming the reinforcing flange 1112 integrally formed with the first crossbeam 11 on the bracket body 1111, the subframe assembly 1 significantly enhances the structural strength of the suspension bracket 111 and the entire subframe assembly 1, ensuring that the connection between the reinforcing flange 1112 and the first crossbeam 11 is firm and reliable, and there are no additional connection points or welds, reducing potential stress concentration points and failure risks. The reinforcing flanges 1112 of adjacent two bracket bodies 1111 extend in directions away from each other, which helps to increase the bending and torsional resistance of the bracket body 1111. When the vehicle is subjected to lateral forces or torques during driving, the reinforcing flange 1112 can provide additional support and resistance, making the subframe assembly 1 more stable and reliable. Moreover, the reinforcing flanges 1112 of the two bracket bodies 1111 extend away from each other and will not interfere with the shock absorber suspension between the two bracket bodies 1111, ensuring the stability of the shock absorber suspension assembly.

[0046] According to an embodiment of the present invention, the first installation area 112 is adjacent to the end of the first cross beam 11. A first installation hole 1121 for assembling the subframe assembly 1 is formed in the first installation area 112. The fact that the first installation area 112 is adjacent to the end of the first cross beam 11 enables the subframe assembly 1 to make more reasonable use of space during assembly, makes the connection with other vehicle components more compact and orderly, can reduce interference and conflicts during the assembly process, and improves the assembly efficiency. The first installation hole 1121 formed in the first installation area 112 provides a firm connection point for the connection between the subframe assembly 1 and other components (such as the vehicle body, engine, etc.). Through these installation holes, fasteners such as bolts and nuts can be used to firmly fix the subframe assembly 1 on the vehicle to ensure its stability and safety during driving.

[0047] According to an embodiment of the present invention, the second installation area 131 is adjacent to the connection area between the longitudinal beam 13 and the round tube beam 14. A second installation hole 1311 for assembling the subframe assembly 1 is formed in the second installation area 131. The fact that the second installation area 131 is adjacent to the connection area between the longitudinal beam 13 and the round tube beam 14 enables the subframe assembly 1 to be additionally reinforced at the key connection part. By arranging the second installation area 131 at the connection position between the round tube beam 14 and the longitudinal beam 13, the load can be effectively dispersed and transmitted, and the stress concentration at the connection can be reduced, thereby significantly improving the overall structural stability of the subframe assembly 1. The second installation hole 1311 formed in the second installation area 131 provides accurate positioning and fixing points for the assembly of the subframe assembly 1. During the assembly process, through these installation holes, the accurate alignment and firm connection between the subframe assembly 1 and other components (such as the vehicle body structure, suspension system, etc.) can be ensured, thereby improving the assembly accuracy and reliability. The setting position of the second installation hole 1311 takes into account the force-bearing situation of the subframe assembly 1 during actual use, which helps to optimize the load transmission path. When the vehicle is subjected to various external forces during driving, the load can be transmitted more directly and effectively to the longitudinal beam 13 and the round tube beam 14 through the second installation hole 1311, dispersing the stress and avoiding damage to the subframe assembly 1 due to local stress concentration, thereby improving the safety of the vehicle.

[0048] According to an embodiment of the present invention, a deformation zone 132 is formed on the surface of the longitudinal beam 13 between the second installation area 131 and the second cross beam 12, and the deformation zone 132 penetrates the longitudinal beam 13 in the width direction. The presence of the deformation zone 132 helps to optimize the stress distribution of the subframe assembly 1 when it is stressed. When an external force acts on the subframe assembly 1, the deformation zone 132 can serve as a stress release channel, dispersing the stress that might otherwise concentrate in a certain local area to the entire deformation zone 132, avoiding material damage or structural failure caused by excessive local stress. In a traditional subframe, a deformation zone 132 is also usually provided. The difference is that the deformation zone 132 of the traditional subframe does not penetrate the longitudinal beam 13, and a strengthening structure is usually provided in the deformation zone 132, which will cause the subframe assembly 1 to not deform well within the deformation zone 132, that is, it hinders the deformation of the subframe and will cause the subframe to be damaged when the force is too large. On the contrary, the deformation zone 132 provided in the subframe assembly 1 of the present invention penetrates the longitudinal beam 13, enabling the subframe assembly 1 to deform more significantly within the deformation zone 132, and thus being able to release greater stress, which can avoid damage to the subframe assembly 1 due to excessive stress and improve the safety of the vehicle.

[0049] The vehicle according to the present invention will be briefly described below.

[0050] The vehicle according to the present invention includes the subframe assembly 1 in the above embodiment. Since the vehicle according to the present invention is provided with the subframe assembly 1 in the above embodiment, the subframe assembly 1 reduces its own weight through the weight reduction zone 15 between the round tube beam 14 and the second cross beam 12, as well as the design of the suspension bracket 111 and the two installation areas, achieving the lightweight of the vehicle.

[0051] In some embodiments, an engine under shield 21 and a body chassis shield 22 are usually provided on the vehicle. In a vehicle with a traditional subframe, the engine under shield 21 and the body chassis shield 22 are respectively connected to the subframe and are of a split structure, with high energy consumption. In the present invention, the engine under shield 21 and the body chassis shield 22 can be configured as an integral part, with higher structural strength and can reduce the overall vehicle energy consumption and improve the vehicle's endurance.

[0052] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0053] In the description of the present invention, the "first feature" and "second feature" may include one or more of such features.

[0054] In the description of the present invention, the meaning of "a plurality of" is two or more.

[0055] In the description of the present invention, that the first feature is "above" or "below" the second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but in contact through additional features therebetween.

[0056] In the description of the present invention, that the first feature is "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature.

[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. 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 invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0058] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A subframe assembly, characterized in that: include: A first cross beam (11) and a second cross beam (12), wherein the first cross beam (11) and the second cross beam (12) are spaced apart from each other; A longitudinal beam (13), wherein the longitudinal beam (13) is connected to the first cross beam (11) and the second cross beam (12) respectively, and the longitudinal beam (13) is configured as two longitudinal beams spaced apart from each other; A round tube beam (14), the round tube beam (14) is arranged on a side of the second cross beam (12) away from the first cross beam (11) and is respectively connected to the two longitudinal beams (13); wherein The first crossbeam (11) is provided with a suspension bracket (111) integrally formed with the first crossbeam (11) and a first installation area (112) integrated with the surface of the first crossbeam (11); the longitudinal beam (13) is provided with a second installation area (131) integrated with the surface of the longitudinal beam (13); and a weight reduction area (15) is formed between the circular tube beam (14) and the second crossbeam (12).

2. The subframe assembly according to claim 1, characterized in that: A battery power module (16) is arranged on the rear side of the sub-frame assembly, an electric drive assembly (17) is arranged on the top of the sub-frame assembly, a battery wiring harness (161) is arranged on the battery power module (16) and passes over the sub-frame assembly and is connected to the electric drive assembly (17), and a gap suitable for deformation of the battery wiring harness (161) is formed between the circular tube beam (14) and the power battery module.

3. The subframe assembly according to claim 2, characterized in that: The longitudinal beam (13) is formed with a positioning line (10) located at the rear side of the second installation area (131), and the distance between the circular tube beam (14) and the positioning line (10) is d, and satisfies: 15mm≤d≤25mm.

4. The subframe assembly according to claim 3, characterized in that: The circular tube beam (14) is provided with a fixing bracket (141) for fixing the battery wiring harness (161).

5. The subframe assembly according to claim 1, characterized in that: The suspension bracket (111) is constructed as a plurality of brackets arranged at intervals on the first cross beam (11), and each of the suspension brackets (111) comprises: a bracket body (1111), and the bracket bodies (1111) are constructed as two bracket bodies (1111) arranged symmetrically to each other, and the two bracket bodies (1111) are respectively integrally formed with the first cross beam (11), and a suspension mounting position (1113) for mounting a vehicle vibration-damping suspension is formed between the two bracket bodies (1111).

6. The subframe assembly according to claim 5, characterized in that: A reinforcing flange (1112) is formed on the bracket body (1111), the reinforcing flange (1112) is integrally formed with the first crossbeam (11), and the reinforcing flanges (1112) of two adjacent bracket bodies (1111) extend in directions away from each other.

7. The subframe assembly according to claim 1, characterized in that: The first installation area (112) is adjacent to the end of the first crossbeam (11), and a first installation hole (1121) for assembling a sub-frame assembly is formed in the first installation area (112).

8. The subframe assembly according to claim 1, characterized in that: The second installation area (131) is adjacent to the connection area between the longitudinal beam (13) and the round tube beam (14), and a second installation hole (1311) for assembling a sub-frame assembly is formed in the second installation area (131).

9. The subframe assembly according to claim 8, characterized in that: A deformation zone (132) located between the second installation zone (131) and the second cross beam (12) is formed on the surface of the longitudinal beam (13), and the deformation zone (132) penetrates the longitudinal beam (13) in the width direction.

10. A vehicle, characterized in that: The vehicle comprises a subframe assembly as claimed in any one of claims 1 to 9.

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