Auxiliary frame, auxiliary frame assembly and automobile with auxiliary frame assembly

Abstract

The utility model provides an auxiliary frame, an auxiliary frame assembly and an automobile. The auxiliary frame is of an integrated aluminum structure. The auxiliary frame comprises a body, a plurality of connecting pieces and a plurality of connecting pieces, the energy absorption mounting structure is arranged at the front end of the body in the width direction of the body; the first force transmission mounting structure is arranged at the rear end of the body in the width direction of the body; the second force transmission mounting structure is arranged at the rear end of the body in the width direction of the body; the first force transmission installation structure and the second force transmission installation structure are arranged in the height direction of the body. According to the auxiliary frame and the auxiliary frame assembly, light weight is achieved, and collision force is effectively reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a subframe, a subframe assembly and a vehicle thereof. Background Art

[0002] The subframe is an important part of the automobile chassis. It connects the body and suspension, transfers wheel loads, improves body rigidity, blocks vibration and noise, and reduces their direct entry into the car compartment.

[0003] Traditional subframes are made of steel materials by stamping and welding, which are heavy and do not conform to lightweight design. In addition, the welding deformation is large, the dimensional stability is poor, and it is easy to cause problems such as difficulty in loading and cracking of welds. In addition, the subframe structure is too strong, which is not conducive to collision energy absorption, and there are few force transmission channels, so it is difficult to reduce the collision stress, which makes the force transmitted to the car through the subframe too large. Utility Model Content

[0004] Based on this, it is necessary to provide a lightweight subframe, a subframe assembly and a vehicle thereof that can reduce collision force.

[0005] A subframe, the subframe is an integrated aluminum structure, and the subframe comprises:

[0006] ontology;

[0007] An energy absorbing mounting structure, along the width direction of the body, the energy absorbing mounting structure is arranged at the front end of the body;

[0008] A first force transmission installation structure, along the width direction of the body, the first force transmission installation structure is arranged at the rear end position of the body;

[0009] The second force transmission installation structure is arranged along the width direction of the body at the rear end of the body; the first force transmission installation structure and the second force transmission installation structure are arranged along the height direction of the body.

[0010] In one of the embodiments, the energy absorbing mounting structure includes a mounting portion protruding from the body and a mounting hole, the mounting portion protruding from the body along the width direction of the body, and the mounting hole is provided on the mounting portion.

[0011] In one embodiment, the first force transmission installation structure includes a first force transmission portion protruding from the body and a first connecting hole, and the first connecting hole is provided on the first force transmission portion.

[0012] In one embodiment, the second force transmission installation structure includes a second force transmission portion and a second connecting hole, the second force transmission portion is arranged on the first force transmission portion, and the second connecting hole is arranged on the second force transmission portion.

[0013] In one embodiment, the first force transmission portion protrudes from the end wall of the body along the width direction of the body, and / or the second force transmission portion protrudes from the side wall of the first force transmission portion along the width direction of the body.

[0014] In one of the embodiments, an energy absorbing portion is provided on the main body, and the energy absorbing portion is used to deform when subjected to an external force.

[0015] In one embodiment, the body includes an integrated front cross beam, a rear cross beam, a left longitudinal beam, and a right longitudinal beam, the front cross beam and the rear cross beam are arranged along the width direction of the body, and the left longitudinal beam and the right longitudinal beam are arranged along the length direction of the body; the energy absorption part is arranged on the left longitudinal beam and the right longitudinal beam.

[0016] In one embodiment, a depression is provided on the left longitudinal beam to form the energy absorbing portion, and a depression is provided on the right longitudinal beam to form the energy absorbing portion.

[0017] In one of the embodiments, a swing arm mounting frame and reinforcing ribs are provided on the main body, and the reinforcing ribs are partially connected to the swing arm mounting frame.

[0018] The present application also provides a subframe assembly, which includes an energy absorption box, a first force transmission member, a second force transmission member and a subframe as described in any of the above embodiments, wherein the energy absorption box is connected to the energy absorption mounting structure, the first force transmission member is connected to the first force transmission mounting structure, and the second force transmission member is connected to the second force transmission structure.

[0019] In one embodiment, the axis of the first force transmission member is arranged to intersect with the axis of the second force transmission member.

[0020] In one embodiment, the second force transmission member is provided with a plurality of hollow portions, and the plurality of hollow portions are arranged at intervals along the width direction of the second force transmission member; along the length direction of the second force transmission member, the plurality of hollow portions penetrate the second force transmission member.

[0021] Compared with the prior art, the subframe adopts an integrated aluminum structure, which reduces weight by 36% compared with the traditional sheet metal subframe, meeting the lightweight requirements; and no welding is required, effectively avoiding the problem of welding deformation, with high dimensional accuracy and less prone to assembly problems. Through the setting of the energy absorption mounting structure, the front end of the subframe can be connected to the energy absorption box to absorb energy during a collision and reduce the collision stress on the subframe. At the same time, through the setting of the first force transmission mounting structure and the second force transmission mounting structure, the subframe can be connected to the force transmission bracket, force transmission rod and other components used for force transmission, thereby forming multiple force transmission channels, transmitting the collision stress on the subframe outward, and reducing the force transmitted from the subframe to the body floor and the compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 Schematic diagram of the subframe structure provided for this application.

[0024] Figure 2 Front view of the subframe provided for this application.

[0025] Figure 3 Rear view of the subframe provided for this application.

[0026] Figure 4 Side view of the subframe provided for this application.

[0027] Figure 5 This is a schematic diagram of the subframe assembly structure provided for this application.

[0028] Figure 6 Front view of the subframe assembly provided for this application.

[0029] Figure 7 for Figure 6 Sectional view along line AA.

[0030] 1. The vehicle body is provided with a plurality of supporting members, each of which is provided with a plurality of supporting members, and each of which is provided with a plurality of supporting members. 2. The vehicle body is provided with a plurality of supporting members, each of which is provided with a plurality of supporting members. 3. The vehicle body is provided with a plurality of supporting members, each of which is provided with a plurality of supporting members. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0032] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0036] See also Figures 1 to 7The present application provides a subframe assembly, which includes an energy absorbing box 20, a first force transmitting member 30, a second force transmitting member 40 and a subframe 10. The energy absorbing box 20 is connected to the energy absorbing mounting structure 12, the first force transmitting member 30 is connected to the first force transmitting mounting structure 13, and the second force transmitting member 40 is connected to the second force transmitting structure.

[0037] See also Figures 1 to 4 The subframe 10 is an integrated aluminum structure. The subframe 10 includes a body 11, an energy absorbing mounting structure 12, a first force transmitting mounting structure 13, and a second force transmitting mounting structure 14. The width direction of the body 11 is defined as the X direction, the length direction of the body 11 is defined as the Y direction, and the height direction of the body 11 is defined as the Z direction. Along the width direction X of the body 11, the energy absorbing mounting structure 12 is arranged at the front end position of the body 11. Along the width direction X of the body 11, the first force transmitting mounting structure 13 is arranged at the rear end position of the body 11. Along the width direction X of the body 11, the second force transmitting mounting structure 14 is arranged at the rear end position of the body 11.

[0038] In one embodiment, the energy absorbing box 20 is connected to the energy absorbing mounting structure 12 , the first force transmitting member 30 is connected to the first force transmitting mounting structure 13 , and the second force transmitting member 40 is connected to the second force transmitting structure.

[0039] During the driving of the car, vibrations, collisions, etc. are first absorbed by the energy absorbing box 20, and then transmitted to the subframe 10, and then transmitted outward through the first force transmission member 30 and the second force transmission member 40. During the whole process, vibrations and collisions are absorbed and weakened to a great extent, and finally the force transmitted to the vehicle body floor and the vehicle compartment through the subframe 10 is relatively small, thereby improving the collision performance and comfort of the whole vehicle.

[0040] In one embodiment, the subframe 10 is an integrated aluminum structure, which means that the subframe 10 is made of aluminum alloy material, and the entire subframe 10 is an integrated structure. In this way, the lightweight requirement is met, and no welding is required, which effectively avoids the problem of welding deformation, has high dimensional accuracy, and is not prone to assembly problems. The integrated structure can be obtained by casting, low-pressure casting, high-pressure casting, laser processing, etc. This embodiment adopts a low-pressure casting method to further improve product accuracy.

[0041] Preferably, the body 11 is a hollow structure, so that the weight of the entire subframe 10 is lighter, meeting the lightweight requirement.

[0042] Specifically, the number of the energy-absorbing mounting structure 12, the first force-transmitting mounting structure 13, and the second force-transmitting mounting structure 14 can be set to one, two, or more than two. In the present embodiment, the energy-absorbing mounting structure 12, the first force-transmitting mounting structure 13, and the second force-transmitting mounting structure 14 are each provided with two, preferably symmetrically arranged, so that the absorption and transmission of force are more balanced and the effect is better. In one embodiment, the two energy-absorbing mounting structures 12 are arranged along the length direction Y of the body 11, specifically, they are respectively arranged at the left and right ends of the front end of the body 11, and the two energy-absorbing mounting structures 12 are symmetrically arranged along the axial direction of the body 11. The two first force-transmitting mounting structures 13 are arranged along the length direction Y of the body 11, specifically, they are respectively arranged at the left and right ends of the rear end of the body 11, and the two first force-transmitting mounting structures 13 are symmetrically arranged along the axial direction of the body 11. The two second force-transmitting mounting structures 14 are arranged along the length direction Y of the body 11, specifically, they are respectively arranged at the left and right ends of the rear end of the body 11, and the two second force-transmitting mounting structures 14 are symmetrically arranged along the axial direction of the body 11.

[0043] The first force transmission installation structure 13 and the second force transmission installation structure 14 are arranged along the height direction Z of the body 11. That is, the positions of the first force transmission installation structure 13 and the second force transmission installation structure 14 are arranged up and down. In this embodiment, the first force transmission installation structure 13 is arranged above the second force transmission installation structure 14. In other embodiments, the first force transmission installation structure 13 can also be arranged below the second force transmission installation structure 14. The two channels for the sub-frame 10 to transmit force outward are inconsistent in the height direction, and the transmission of the corresponding force is more dispersed, thereby improving the stress reduction effect.

[0044] Further, after installation, the axis of the first force transmission member 30 intersects with the axis of the second force transmission member 40, that is, there is an angle between the axis of the first force transmission member 30 and the axis of the second force transmission member 40. Here, the angle can be an obtuse angle or an acute angle. In this embodiment, it is set to an acute angle. Under the premise of inconsistent heights, the transmission directions of the two channels are also inconsistent, and the dispersion of force transmission is more obvious.

[0045] Specifically, the first force transmission installation structure 13 includes a first force transmission portion 131 and a first connection hole 132, and the first force transmission portion 131 is arranged protruding from the main body 11. The first force transmission portion 131 is an integral structure with the main body 11, and is specifically a convex portion extending outwardly from a position corresponding to the rear side of the main body 11 along the width direction X of the main body 11. Of course, in other embodiments, the first force transmission portion 131 can also be fixedly connected to the main body 11 by welding, screwing, etc. The first connection hole 132 is provided on the first force transmission portion 131, and penetrates the first force transmission portion 131 along the Y direction.

[0046] Specifically, the second force transmission installation structure 14 includes a second force transmission part 141 and a second connecting hole 142. The second force transmission part 141 is arranged on the first force transmission part 131, and the second connecting hole 142 is arranged on the second force transmission part 141. In this embodiment, along the Z direction, the second force transmission part 141 is arranged at the lower position of the first force transmission part 131, and the second force transmission part 141 protrudes from the side wall of the first force transmission part 131 along the X direction. The second force transmission part 141 can be connected to the body 11 by welding, screwing, integral molding, etc. In this embodiment, the second force transmission part 141 and the first force transmission part 131 are an integral structure. The second connecting hole 142 is arranged on the second force transmission part 141, and penetrates the second force transmission part 141 along the Z direction.

[0047] In one embodiment, the energy absorbing mounting structure 12 includes a mounting portion 121 and a mounting hole 122. The mounting portion 121 protrudes from the rear side of the body 11 along the width direction X of the body 11. The mounting hole 122 is provided on the mounting portion 121, and the mounting hole 122 penetrates the mounting portion 121 along the Z direction. The mounting portion 121 can be connected to the body 11 by welding, screwing, integral molding, etc. In this embodiment, the mounting portion 121 and the body 11 are integrally molded.

[0048] Furthermore, the body 11 is provided with an energy absorbing portion 15, which is used to deform when subjected to external force, thereby reducing the strength and rigidity of the body 11. When a collision occurs, the energy absorbing portion 15 deforms to absorb energy, thereby reducing the force transmitted to the vehicle body through the subframe 10. The energy absorbing portion 15 can be formed in a variety of ways, such as a depression, a groove, or partial hollowing, so that the thickness or rigidity of the energy absorbing portion 15 is reduced compared to the body 11, thereby achieving a certain deformation effect. In this embodiment, the weakening portion is formed in a concave manner.

[0049] See also Figure 2 , Figure 3 The body 11 includes an integrated front cross beam 111, a rear cross beam 112, a left longitudinal beam 113, and a right longitudinal beam 114. The front cross beam 111 and the rear cross beam 112 are arranged along the width direction X of the body 11, and the left longitudinal beam 113 and the right longitudinal beam 114 are arranged along the length direction Y of the body 11. The energy absorbing part 15 can be arranged on the front cross beam 111, the rear cross beam 112, the left longitudinal beam 113, and the right longitudinal beam 114. In this embodiment, the energy absorbing part 15 is only arranged on the left longitudinal beam 113 and the right longitudinal beam 114, which ensures a certain degree of deformation without losing rigidity, thereby achieving both a good supporting connection effect and a good collision energy absorption effect.

[0050] Corresponding to the Z direction, the lower surface of the left longitudinal beam 113 is provided with a recess to form an energy absorbing portion 15, which is set in the middle position of the left longitudinal beam 113 and is a recess from bottom to top. The recess can be formed synchronously when the body 11 is processed as a whole, and the processing operation is simple. Corresponding to the Z direction, the lower surface of the right longitudinal beam 114 is provided with a recess to form an energy absorbing portion 15, which is set in the middle position of the right longitudinal beam 114 and is a recess from bottom to top. The recess can be formed synchronously when the body 11 is processed as a whole, and the processing operation is simple.

[0051] Corresponding to the Z direction, a plurality of swing arm mounting brackets 16 are provided on the lower surface of the main body 11, specifically four of them, which are respectively arranged at the connection points between the front cross beam 111 and the left longitudinal beam 113, the left longitudinal beam 113 and the rear cross beam 112, the rear cross beam 112 and the right longitudinal beam 114, and the right longitudinal beam 114 and the front cross beam 111, and the swing arm can be connected to the swing arm mounting bracket 16.

[0052] Furthermore, a reinforcing rib 17 is provided on the lower surface of the body 11 at a position corresponding to the swing arm mounting frame 16, and a portion of the reinforcing rib 17 is connected to the swing arm mounting frame 16 to improve the strength of the swing arm mounting frame 16. In this embodiment, the swing arm mounting frame 16 is only connected to the reinforcing rib 17 at the connection position between the left longitudinal beam 113 and the rear cross beam 112, and the rear cross beam 112 and the right longitudinal beam 114, and the reinforcing rib 17 extends along the X direction.

[0053] First connecting columns 101 are respectively provided on the main body 11 at the connection positions corresponding to the front cross beam 111 and the left longitudinal beam 113, the left longitudinal beam 113 and the rear cross beam 112, the rear cross beam 112 and the right longitudinal beam 114, and the right longitudinal beam 114 and the front cross beam 111, and the subframe 10 is connected to the vehicle body through these first connecting columns 101.

[0054] A plurality of second connection posts 102 are provided on the upper surface of the body 11 corresponding to the connection between the front cross beam 111 and the left longitudinal beam 113, and the compressor is mounted on these second connection posts 102. The above-mentioned plurality of possible values ​​are 2 or 4.

[0055] Furthermore, a plurality of third connecting posts 103 are provided on the lower surfaces of the left longitudinal beam 113 and the right longitudinal beam 114, and the steering gear is mounted on these third connecting posts 103. The above-mentioned plurality of possible values ​​are 2 and 4.

[0056] A fourth connecting column 104 is provided on the lower surface of the rear cross beam 112 at a position corresponding to between the swing arm mounting frame 16 and the first force transmission portion 131, and the stabilizer bar is connected to the fourth connecting column 104. The first connecting column 101, the second connecting column 102, the third connecting column 103, and the fourth connecting column 104 mentioned above are all integrally formed with the body 11, specifically, cylindrical bosses formed on the body 11, and a round hole or a screw hole is provided at the center of the bosses.

[0057] See also Figure 5 The energy absorbing box 20 is hollow inside and has openings at both ends. Corresponding to the Z direction, a through hole 21 is provided on one end of the energy absorbing box 20, which penetrates the energy absorbing box 20 along the Z direction. The end of the energy absorbing box 20 is sleeved on the mounting portion 121, and the position of the mounting hole 122 corresponds to the position of the through hole 21. Screws, bolts, etc. can pass through to achieve the connection between the energy absorbing box 20 and the mounting portion 121.

[0058] Specifically, the first force transmission member 30 may adopt a structure such as an angle code, a joint, a rod, etc. In this embodiment, the first force transmission member 30 adopts a structure similar to an angle code, and a through hole 31 penetrating the first force transmission member 30 is provided on the first force transmission member 30 corresponding to the X direction. When the first force transmission member 30 is sleeved on the first force transmission part 131, the through hole 31 is connected to the first connection hole 132, and screws, bolts, etc. can pass through to realize the connection between the first force transmission member 30 and the first force transmission part 131.

[0059] Specifically, the second force transmission member 40 may be an angle bracket, a joint, a rod, etc. In this embodiment, the second force transmission member 40 is a rod-shaped structure, and an opening is provided on the second force transmission member 40 along the Z direction. When installed, the opening is connected to the second connection hole 142, and screws, bolts, etc. are passed through to achieve the connection between the second force transmission member 40 and the second force transmission part 141.

[0060] See also Figure 7 The second force transmission member 40 is provided with a plurality of hollow portions 45, which are arranged at intervals along the width direction of the second force transmission member 40; along the length direction of the second force transmission member 40, a plurality of hollow portions 45 penetrate the second force transmission member 40. While reducing the overall weight of the second force transmission member 40, the hollow portions 45 also enable the second force transmission member 40 as a whole to have a certain deformation energy absorption capacity, further reducing the collision stress transmitted to the outside by the sub-frame 10.

[0061] Specifically, the second force transmission member 40 includes a top plate 41, a bottom plate 42 and an intermediate plate 43, the intermediate plate 43 is bent and shaped like a wave, the top plate 41 is fixedly connected to the upper surface of the intermediate plate 43, the bottom plate 42 is fixedly connected to the lower surface of the bottom plate, and the top plate 41 and the intermediate plate 43, the bottom plate 42 and the intermediate plate 43 surround the aforementioned hollow portion 45. The aforementioned fixing is achieved by welding, bonding, or screwing, which is not specifically limited here.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A subframe, characterized in that: The subframe (10) is an integrated aluminum structure, and the subframe (10) comprises: Ontology(11); An energy absorbing mounting structure (12) is arranged along the width direction of the body (11), and the energy absorbing mounting structure (12) is arranged at the front end of the body (11); A first force transmission installation structure (13) is arranged along the width direction of the body (11), and the first force transmission installation structure (13) is arranged at the rear end of the body (11); The second force transmission installation structure (14) is arranged along the width direction of the main body (11), and the second force transmission installation structure (14) is arranged at the rear end position of the main body (11); the first force transmission installation structure (13) and the second force transmission installation structure (14) are arranged along the height direction of the main body (11).

2. The subframe according to claim 1, characterized in that: The energy absorbing mounting structure (12) comprises a mounting portion (121) protruding from the body (11) and a mounting hole (122); the mounting portion (121) protrudes from the body (11) along the width direction of the body (11); and the mounting hole (122) is provided on the mounting portion (121).

3. The subframe according to claim 1, characterized in that: The first force transmission installation structure (13) comprises a first force transmission portion (131) protruding from the body (11) and a first connection hole (132), wherein the first connection hole (132) is arranged on the first force transmission portion (131).

4. The subframe according to claim 3, characterized in that: The second force transmission installation structure (14) comprises a second force transmission portion (141) and a second connecting hole (142); the second force transmission portion (141) is arranged on the first force transmission portion (131); and the second connecting hole (142) is arranged on the second force transmission portion (141).

5. The subframe according to claim 4, characterized in that: The first force transmission portion (131) protrudes from the end wall of the main body (11) along the width direction of the main body (11), and / or the second force transmission portion (141) protrudes from the side wall of the first force transmission portion (131) along the width direction of the main body (11).

6. The subframe according to claim 1, characterized in that: The main body (11) is provided with an energy absorbing portion (15), and the energy absorbing portion (15) is used to deform when subjected to an external force.

7. The subframe according to claim 6, characterized in that: The body (11) comprises an integrated front cross beam (111), a rear cross beam (112), a left longitudinal beam (113), and a right longitudinal beam (114); the front cross beam (111) and the rear cross beam (112) are arranged along the width direction of the body (11), and the left longitudinal beam (113) and the right longitudinal beam (114) are arranged along the length direction of the body (11); and the energy absorbing part (15) is arranged on the left longitudinal beam (113) and the right longitudinal beam (114).

8. The subframe according to claim 7, characterized in that: The left longitudinal beam (113) is provided with a recess to form the energy absorbing portion (15), and the right longitudinal beam (114) is provided with a recess to form the energy absorbing portion (15).

9. The subframe according to claim 1, characterized in that: The body (11) is provided with a swing arm mounting frame (16) and a reinforcing rib (17), and the reinforcing rib (17) is partially connected to the swing arm mounting frame (16).

10. A subframe assembly, characterized in that: The subframe assembly comprises an energy absorbing box (20), a first force transmission member (30), a second force transmission member (40), and a subframe (10) according to any one of claims 1 to 9, wherein the energy absorbing box (20) is connected to the energy absorbing mounting structure (12), the first force transmission member (30) is connected to the first force transmission mounting structure (13), and the second force transmission member (40) is connected to the second force transmission mounting structure (14).

11. The subframe assembly according to claim 10, characterized in that: The axis of the first force transmission member (30) and the axis of the second force transmission member (40) are arranged to intersect.

12. The subframe assembly according to claim 10, characterized in that: The second force transmission member (40) is provided with a plurality of hollow portions (45), and the plurality of hollow portions (45) are arranged at intervals along the width direction of the second force transmission member (40); Along the length direction of the second force transmission member (40), a plurality of hollow portions (45) penetrate the second force transmission member (40).

13. A car, characterized in that: It comprises the subframe as described in any one of claims 1 to 9; or the subframe assembly as described in any one of claims 10 to 12.

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