Subframe and vehicle

Abstract

The utility model discloses an auxiliary frame and a vehicle. The auxiliary frame comprises a longitudinal beam and a transverse beam, the mounting bracket is connected to the longitudinal beam, and the mounting bracket is used for connecting the auxiliary frame and a related mounting structure; the reinforcing box is connected with the mounting bracket, and the reinforcing box extends towards one side deviating from the longitudinal beam in the vertical direction and extends towards the inner side of the longitudinal beam in the transverse direction. Therefore, by additionally arranging the reinforcing box on the mounting bracket, the structural strength of the mounting bracket can be improved, and the mounting bracket can participate in energy absorption in advance, so that the safety of passengers is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is a kind of auxiliary frame and vehicle. BACKGROUND

[0002] With the continuous improvement of people's living standards, vehicles have not just meet the needs of transportation tools, people's demand for car safety is increasing, the difficulty of safety star to achieve will increase year by year, to cope with the challenge brought by safety regulations upgrading, auxiliary frame becomes the key part of vehicle safety structure design.

[0003] In the related art, since the existing front auxiliary frame has a large corner, it is easy to bend at the large corner when subjected to force impact, the energy absorption effect is poor, which is not conducive to the safety performance of the vehicle. Moreover, the middle mounting bracket, as a part of the frame, cannot participate in energy absorption during the collision process, resulting in the transmission of collision force to the passenger compartment, which may cause deformation of the passenger compartment and affect the safety of passengers. SUMMARY

[0004] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an auxiliary frame, which can improve the structural strength of the mounting bracket and enable the mounting bracket to participate in energy absorption in advance.

[0005] The utility model further provides a vehicle.

[0006] According to the auxiliary frame of the utility model, the mounting bracket is connected to the longitudinal beam, and the mounting bracket is used to connect the auxiliary frame and the related mounting structure. The reinforcing box is connected with the mounting bracket, and the reinforcing box extends along the vertical direction away from one side of the longitudinal beam and extends along the horizontal direction to the inner side of the longitudinal beam.

[0007] Therefore, by adding the reinforcing box to the mounting bracket, the structural strength of the mounting bracket can be improved, and the mounting bracket can participate in energy absorption in advance, thereby improving the safety of passengers.

[0008] In some examples of the utility model, one side of the reinforcing box towards the mounting bracket is formed with an opening, and the width of the opening gradually decreases in the direction close to the mounting bracket.

[0009] In some examples of the utility model, the reinforcing box is configured in an open shape, and the reinforcing box includes a first bracket, one end of the first bracket is provided with a first bending portion, one end of a second bracket is provided with a second bending portion, the first bending portion is connected with the second bending portion, and the other end of the first bracket and the other end of the second bracket are formed with an opening and connected with the mounting bracket respectively.

[0010] In some examples of the utility model, the reinforcing box is arched with low sides and high middle along the length direction of the box.

[0011] In some examples of the utility model, the two longitudinal beams are arranged in transverse direction, each longitudinal beam comprises: a longitudinal beam front section extending in longitudinal direction; a longitudinal beam middle section connected to the front end of the longitudinal beam front section, the mounting bracket is arranged at the end of the longitudinal beam middle section away from the longitudinal beam front section, the distance between the longitudinal beam middle sections gradually decreases in the direction away from the longitudinal beam front section.

[0012] In some examples of the utility model, the auxiliary frame further comprises: an outer reinforcing plate connected to the two sides of the connection between the longitudinal beam front section and the longitudinal beam middle section, the outer reinforcing plate is located on the inner side of the longitudinal beam.

[0013] In some examples of the utility model, the outer reinforcing plate is formed with a tool via on the side away from the longitudinal beam; and / or the lower side of the outer reinforcing plate and the inner side of the longitudinal beam front section and the longitudinal beam middle section jointly define a gap for liquid drainage, the outer reinforcing plate is connected to the inner side of the longitudinal beam front section and the longitudinal beam middle section respectively, the outer reinforcing plate is connected to the top of the main body section and the bending section in vertical direction respectively; and / or the front part of the outer reinforcing plate is formed with a transition fillet and a reinforcing rib, the reinforcing rib is located below the transition fillet.

[0014] In some examples of the utility model, the longitudinal beam is formed with an inner cavity, the auxiliary frame further comprises: an inner reinforcing plate connected to the longitudinal beam and arranged in the inner cavity, the inner reinforcing plate is located at least one of close to the longitudinal beam front section and close to the longitudinal beam middle section.

[0015] In some examples of the utility model, the inner reinforcing plate comprises: a top plate arranged in vertical direction with the top wall of the inner cavity; side plates connected to the two sides of the top plate, the side plates are connected to the side walls of the inner cavity; wherein, the side plates on the two sides are configured as inclined plates inclined to the top plate and away from each other; or the top plate and the side plates on the two sides are integrally formed.

[0016] The vehicle according to the second aspect of the utility model comprises the auxiliary frame.

[0017] Additional aspects and advantages of the utility model will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the references to the following drawings, of which:

[0019] Figure 1 is a partial structure schematic diagram of a subframe according to an embodiment of the present application;

[0020] Figure 2 is another partial structure schematic diagram of a subframe according to an embodiment of the present application;

[0021] Figure 3 is a structure schematic diagram at an outer reinforcing plate according to an embodiment of the present application;

[0022] Figure 4 is a structure schematic diagram at an inner reinforcing plate according to an embodiment of the present application;

[0023] Figure 5 is a structure schematic diagram of a reinforcing box according to an embodiment of the present application;

[0024] Figure 6 is a structure schematic diagram of another angle of a reinforcing box according to an embodiment of the present application;

[0025] Figure 7 is a structure schematic diagram of an outer reinforcing plate according to an embodiment of the present application;

[0026] Figure 8 is a structure schematic diagram of an inner reinforcing plate according to an embodiment of the present application;

[0027] Figure 9 is a structure schematic diagram of another angle of an inner reinforcing plate according to an embodiment of the present application.

[0028] Reference signs:

[0029] 100, subframe;

[0030] 1, longitudinal beam; 11, longitudinal beam front section; 12, longitudinal beam middle section; 13, inner cavity;

[0031] 2, mounting bracket;

[0032] 3, reinforcing box; 31, opening; 32, first bracket; 321, first bending part; 33, second bracket; 331, second bending part;

[0033] 4, outer reinforcing plate; 41, tool via hole; 42, transition fillet; 43, reinforcing rib;

[0034] 5, inner reinforcing plate; 51, top plate; 52, side plate. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0036] The following is for reference. Figures 1-9 The subframe 100 according to the embodiment of the present utility model can improve the structural strength of the mounting bracket 2 and enable the mounting bracket 2 to participate in energy absorption in advance.

[0037] Combination Figures 1-9 As shown, the subframe 100 according to the first aspect of this utility model includes a longitudinal beam 1, a mounting bracket 2, and a reinforcing box 3. The longitudinal beam 1 extends generally in the longitudinal direction (i.e., the vehicle's front-to-back direction) and is the main load-bearing structural component of the subframe 100. The mounting bracket 2 connects the subframe 100 and related mounting structures (such as the vehicle frame, body, etc.), connecting them into a single unit. The reinforcing box 3 is generally box-shaped, with a cavity inside, which extends the structural outline of the mounting bracket 2 and effectively enhances its structural strength.

[0038] Specifically, the mounting bracket 2 is bent and connected to the longitudinal beam 1. The mounting bracket 2 is used to connect the subframe 100 and related mounting structures. The reinforcing box 3 is connected to the mounting bracket 2. The reinforcing box 3 extends vertically toward the side away from the longitudinal beam 1 and extends laterally toward the inside of the longitudinal beam 1.

[0039] Specifically, along the vertical direction (i.e., up and down), the mounting bracket 2 is connected between the relevant mounting structure and the longitudinal beam 1. This helps to provide a supporting force carrier for the subframe 100 and ensure the installation stability of the subframe 100. Since the reinforcing box 3 is connected to the mounting bracket 2, the reinforcing box 3 can increase the structural space occupied by the mounting bracket 2 in both the vertical and horizontal directions. This makes the moving joint of the drive shaft closer to the mounting bracket 2 in the longitudinal direction. Therefore, when the vehicle is subjected to longitudinal collision force, the moving joint of the drive shaft can contact the reinforcing box 3 in advance. The reinforcing box 3 then disperses the collision force to the mounting bracket 2 in a timely manner, thereby enabling the mounting bracket 2 to participate in collision energy absorption in advance and reducing the risk of deformation of the passenger compartment.

[0040] In addition, the reinforced box 3 is an independent structure, which makes it easy for other platform models to borrow it as a whole or use it after partial modification, thereby improving the platform commonality effect and reducing R&D costs.

[0041] Therefore, by adding a reinforcing box 3 to the mounting bracket 2, the structural strength of the mounting bracket 2 can be improved, and the mounting bracket 2 can also participate in energy absorption in advance, thereby improving the safety of the occupants.

[0042] According to some optional embodiments of the present invention, combined withFigure 1 , Figure 2 and Figure 6 As shown, the reinforcing box 3 has an opening 31 on the side facing the mounting bracket 2, and the width of the opening 31 gradually decreases in the direction close to the mounting bracket 2.

[0043] The above arrangement allows the reinforcing box 3 to occupy a certain amount of space to meet the requirements of the extended size without adding too much weight (that is, to ensure a large contact area with the moving joint of the drive shaft), thereby improving its practicality and economy.

[0044] In particular, since the width of the opening 31 on the reinforcing box 3 gradually decreases in the direction close to the mounting bracket 2, the force can be gradually transferred from the wider end of the opening 31 to the narrower end of the opening 31. This reduces sudden changes in force and stress concentration, thereby improving the overall structural stability of the reinforcing box 3. It can also enhance the rigidity of the connection between the reinforcing box 3 and the mounting bracket 2 without affecting the overall structural strength, preventing deformation and reducing resonance frequency, thereby improving structural strength, reducing vibration amplitude, and thus improving the NVH performance of the vehicle.

[0045] According to some optional embodiments of the present invention, combined with Figure 1 , Figure 2 and Figure 5 As shown, the reinforcing box 3 is constructed in an open shape. The reinforcing box 3 includes a first support 32 and a second support 33. One end of the first support 32 is provided with a first bending portion 321, and one end of the second support 33 is provided with a second bending portion 331. The first bending portion 321 is connected to the second bending portion 331. The other end of the first support 32 and the other end of the second support 33 form an opening 31 and are respectively connected to the mounting bracket 2.

[0046] Specifically, the first bending portion 321 and the second bending portion 331 can respectively change the extension direction of the outline of the first bracket 32 ​​and the second bracket 33, which facilitates the increase of the spatial modes of the two brackets, thereby improving their bending and torsional stiffness; the first bending portion 321 and the second bending portion 331 are connected to each other, which facilitates the construction of the opening 31 of the reinforcing box 3, and the other end of the first bracket 32 ​​and the other end of the second bracket 33 are respectively connected to the mounting bracket 2, so that the first bracket 32 ​​and the second bracket 33 can be firmly connected and fixed on the mounting bracket 2.

[0047] For example, the first bending part 321 and the second bending part 331 are overlapped and welded. Since the width of the opening 31 formed by the first bracket 32 ​​and the second bracket 33 gradually decreases in the direction towards the mounting bracket 2, and the first bracket 32 ​​and the second bracket 33 are two sheet metal welded structures, the problem of the narrow opening reinforcing box 3 structure being unable to be demolded in one molding can be effectively avoided.

[0048] According to some optional embodiments of the present application, as shown in Figure 1 , Figure 2 and Figure 5 , the reinforcing box 3 is arched with low sides and high middle along the length direction of itself.

[0049] Further, the structural strength and lightweight design effect of the reinforcing box 3 can be considered by concentrating the material in the more critical central position (main stress area) while reducing the amount of material at both ends.

[0050] According to some optional embodiments of the present application, as shown in Figure 1 and Figure 2 , the two longitudinal beams 1 are arranged in transverse direction, each longitudinal beam 1 includes a longitudinal beam front section 11 and a longitudinal beam middle section 12, the longitudinal beam front section 11 extends in longitudinal direction, the longitudinal beam middle section 12 is connected to the rear end of the longitudinal beam front section 11, the mounting bracket 2 is arranged at the end of the longitudinal beam middle section 12 away from the longitudinal beam front section 11, and the spacing between the longitudinal beam middle sections 12 gradually decreases in the direction away from the longitudinal beam front section 11.

[0051] The spacing between the two longitudinally spaced longitudinal beam middle sections 12 gradually decreases in the direction from front to back. In this way, on the one hand, the space position of the relevant structure (close to the relevant structure in the transverse and longitudinal directions) mounted on the auxiliary frame 100 can be matched, thereby providing more convenient installation conditions for the relevant structure, and on the other hand, the wider spacing of the front part of the longitudinal beam middle section 12 can better disperse the torsional load, while the narrower spacing of the rear part of the longitudinal beam middle section 12 helps to concentrate the transmission of torsional force, thereby improving the overall torsional rigidity.

[0052] For example, when the auxiliary frame 100 is subjected to force collision, the wider spacing of the front part of the longitudinal beam middle section 12 can absorb more collision impact force, reducing the impact on the passenger compartment; while the narrower spacing of the rear part helps to disperse the impact force, protecting the safety of the passengers.

[0053] Specifically, as shown in Figure 2 , Figure 3 and Figure 7 , the mounting bracket 2 is arranged at the end of the longitudinal beam middle section 12 away from the longitudinal beam front section 11, and the spacing between the longitudinal beam middle sections 12 gradually decreases in the direction away from the longitudinal beam front section 11.As shown, the auxiliary frame 100 further comprises an outer reinforcing plate 4, which is connected on both sides of the connection between the front section 11 and the middle section 12 of the longitudinal beam 1, and is located on the inner side of the longitudinal beam 1. In this way, the outer reinforcing plate 4 is connected to the front section 11 and the middle section 12 of the longitudinal beam 1 as a whole, thereby increasing the weight and the space modal of the front section 11 and the middle section 12 of the longitudinal beam 1, and improving the structural strength and the bending and torsional stiffness of the two sections. In addition, the outer reinforcing plate 4 can mainly strengthen the local rigidity of the connection between the front section 11 and the middle section 12 of the longitudinal beam 1, effectively reducing the deformation of the stress-weak area when it is stressed, avoiding the stress concentration problem in this area, and more evenly distributing the load from the front and middle parts, thereby improving the overall structural reliability of the longitudinal beam 1, and further reducing the impact force on the passenger compartment and improving the safety of the passengers.

[0054] Further, as shown in Figure 2 , Figure 3 and Figure 7 , the outer reinforcing plate 4 is formed with a tool through hole 41 on the side away from the longitudinal beam 1. In this way, the tool through hole 41 can facilitate the operator to perform the fastening work of the relevant structure on the inner surface of the part of the longitudinal beam 1 that is blocked by the outer reinforcing plate 4 through the tool through hole 41 (for example, the operator uses a tool to extend into the longitudinal beam 1 through the tool through hole 41 to perform the fastening work between the swing arm shaft sleeve and the longitudinal beam 1), thereby improving the arrangement rationality.

[0055] Alternatively, the lower side of the outer reinforcing plate 4 and the inner sides of the front section 11 and the middle section 12 of the longitudinal beam 1 jointly define a gap for draining liquid. The outer reinforcing plate 4 is connected to the inner sides of the front section 11 and the middle section 12 of the longitudinal beam 1, respectively, and is connected to the top of the front section 11 and the middle section 12 of the longitudinal beam 1 in the vertical direction, respectively.

[0056] For example, the outer reinforcing plate 4 is welded to the front section 11 and the middle section 12 of the longitudinal beam 1 in the longitudinal direction, respectively, and is welded to the front section 11 and the middle section 12 of the longitudinal beam 1 in the vertical direction, respectively. In this way, the structural strength of the connection between the front section 11 and the middle section 12 of the longitudinal beam 1 can be effectively improved, so that the failure torque at this position can be improved during the energy absorption process of the auxiliary frame 100 in the stress collision, thereby improving the energy absorption effect of the auxiliary frame 100 and the safety of the passengers. In addition, the lower side of the outer reinforcing plate 4 in the vertical direction is not welded to the lower end of the longitudinal beam 1, and a gap for draining liquid is left. In this way, the electrophoresis effect of the outer reinforcing plate 4 can be ensured, and the outer reinforcing plate 4 is not easy to rust.

[0057] Alternatively, as shown in Figure 2 , Figure 3 and Figure 7As shown, the front part of the outer reinforcing plate 4 has a transition fillet 42 and a reinforcing rib 43. The reinforcing rib 43 is located below the transition fillet 42. With this arrangement, the transition fillet 42 is bent and connected to the position where the extension direction of the structure on the outer reinforcing plate 4 changes. This can play a role in uniformly transitioning the force on the extension path of the structure of the outer reinforcing plate 4 itself, avoiding stress concentration problems, and thus improving the overall uniformity of the force on the outer reinforcing plate 4.

[0058] Among them, the reinforcing rib 43 enhances the strength of the weak points on the outer reinforcing plate 4, thereby improving the overall structural strength of the outer reinforcing plate 4.

[0059] Specifically, in combination Figures 1-2 , Figure 4 and Figures 8-9 As shown, the longitudinal beam 1 has an inner cavity 13. The subframe 100 also includes an inner reinforcing plate 5, which is connected to the longitudinal beam 1. The inner reinforcing plate 5 is disposed in the inner cavity 13, and is located at least near one of the front section 11 and the middle section 12 of the longitudinal beam. For example, the inner reinforcing plate 5 can be located on the side of the front section 11 near the middle section 12, or on the side of the middle section 12 near the front section 11, or simultaneously near both the front section 11 and the middle section 12 (that is, on both sides of the connection between the front section 11 and the middle section 12).

[0060] Understandably, the inner reinforcing plate 5 can increase the weight and spatial modes of the longitudinal beam 1, thereby improving the structural strength and bending and torsional stiffness of the longitudinal beam 1, and thus enhancing the deformation resistance of the longitudinal beam 1 and improving the impact and collision resistance of the subframe 100.

[0061] Furthermore, combined Figure 4 , Figures 8-9 As shown, the inner reinforcing plate 5 includes a top plate 51 and side plates 52. The top plate 51 is vertically spaced from the top wall of the inner cavity 13, and the side plates 52 are connected to both sides of the top plate 51 and to the side walls of the inner cavity 13. The side plates 52 are constructed as inclined plates that are relatively inclined to the top plate 51 and far apart from each other. For example, the inner reinforcing plate 5 is constructed in a U-shape from top to bottom, wider at the bottom and narrower at the top.

[0062] As arranged as described above, the top plate 51 of the inner reinforcing plate 5 is spaced from the top wall of the inner cavity 13, and the side plates 52 on both sides of the inner reinforcing plate 5 extend vertically at an inclination. The lower end of the side plates 52 is connected to the side wall of the inner cavity 13. Compared with the arrangement where the top plate 51 and the side plates 52 of the inner reinforcing plate 5 are respectively attached to the top wall and side wall of the inner cavity 13 of the longitudinal beam 1, this arrangement can reduce the material consumed by the inner reinforcing plate 5. Moreover, since the side plates 52 are inclined plates, the spatial modes of the inner reinforcing plate 5 can be effectively increased, thereby improving the stiffness of the inner reinforcing plate 5, increasing the failure moment of the longitudinal beam 1 during the impact process, and improving the structural reliability of the subframe 100.

[0063] In addition, the inner reinforcing plate 5 is provided with a perforation, so that the electrophoresis effect of the inner reinforcing plate 5 can be ensured, and no electrophoresis liquid and water are accumulated, the strength of the auxiliary frame 100 is improved, and the anti-rust function is not affected; the inner reinforcing plate 5 can also reduce the beat frequency resonance of the longitudinal beam 1 itself, reduce the vibration sensitivity of the longitudinal beam 1, and thus improve the NVH performance of the vehicle.

[0064] Optionally, the top plate 51 and the two side plates 52 are integrally formed, so that the arrangement can reduce the number of parts and the assembly time, thereby reducing the assembly process, reducing the manufacturing cost, and improving the production efficiency; the matching error that may occur in the traditional multi-piece assembly can be avoided, thereby improving the precision and consistency of the product; and the stress concentration point (due to no joint and welding point) can be reduced, thereby improving the overall structural strength and rigidity of the inner reinforcing plate 5, and further improving the structural reliability of the auxiliary frame 100.

[0065] The vehicle according to the second aspect of the present application comprises the auxiliary frame 100 of the above-mentioned embodiments, so that the vehicle with the auxiliary frame 100 can improve the structural strength of the mounting bracket 2, can make the mounting bracket 2 participate in energy absorption in advance, can effectively improve the local rigidity of the large corner of the longitudinal beam 1, and thus improve the impact resistance and energy absorption effect of the auxiliary frame 100, and further improve the safety of the passengers.

[0066] In the description of the present application, 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", "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 limiting the present application.

[0067] In the description of the present application, it should be understood that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between 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.

[0068] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example", or "some examples" and the like 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 mean the same embodiment or example.

[0069] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A subframe (100), characterized in that, include: Longitudinal beam (1); Mounting bracket (2), the mounting bracket (2) is connected to the longitudinal beam (1), the mounting bracket (2) is used to connect the subframe (100) and related mounting structures; The reinforcing box (3) is connected to the mounting bracket (2). The reinforcing box (3) extends vertically toward the side away from the longitudinal beam (1) and extends laterally toward the inside of the longitudinal beam (1).

2. The subframe (100) according to claim 1, characterized in that, The reinforcing box (3) has an opening (31) on the side facing the mounting bracket (2), and the width of the opening (31) gradually decreases in the direction close to the mounting bracket (2).

3. The subframe (100) according to claim 1, characterized in that, The reinforcing box (3) is configured to be open, and the reinforcing box (3) includes: The first bracket (32) has a first bend (321) at one end. The second bracket (33) has a second bend (331) at one end, the first bend (321) is connected to the second bend (331), and the other end of the first bracket (32) and the other end of the second bracket (33) have openings (31) and are respectively connected to the mounting bracket (2).

4. The subframe (100) according to claim 1, characterized in that, The reinforcing box (3) is constructed in an arch shape that is low on both sides and high in the middle along its own length.

5. The subframe (100) according to any one of claims 1-4, characterized in that, The two longitudinal beams (1) are arranged at a transverse interval, and each longitudinal beam (1) includes: The front section (11) of the longitudinal beam extends longitudinally; The middle section (12) of the longitudinal beam is connected to the rear end of the front section (11) of the longitudinal beam. The mounting bracket (2) is located at the end of the middle section (12) of the longitudinal beam away from the front section (11) of the longitudinal beam. The spacing between the middle sections (12) of the longitudinal beam gradually decreases in the direction away from the front section (11) of the longitudinal beam.

6. The subframe (100) according to claim 5, characterized in that, Also includes: An outer reinforcing plate (4) is connected to both sides of the connection between the front section (11) and the middle section (12) of the longitudinal beam. The outer reinforcing plate (4) is located inside the longitudinal beam (1).

7. The subframe (100) according to claim 6, characterized in that, The outer reinforcing plate (4) has a tool through hole (41) formed on the side opposite to the longitudinal beam (1); and / or The lower side of the outer reinforcing plate (4) together with the inner sides of the front section (11) and the middle section (12) of the longitudinal beam defines a notch for drainage. The outer reinforcing plate (4) is connected to the inner sides of the front section (11) and the middle section (12) of the longitudinal beam, respectively. The outer reinforcing plate (4) is vertically connected to the top of the front section (11) and the middle section (12) of the longitudinal beam, respectively; and / or The front part of the outer reinforcing plate (4) is formed with a transition fillet (42) and a reinforcing rib (43), and the reinforcing rib (43) is located below the transition fillet (42).

8. The subframe (100) according to claim 5, characterized in that, The longitudinal beam (1) has an inner cavity (13), and the subframe (100) further includes: An inner reinforcing plate (5) is connected to the longitudinal beam (1) and disposed in the inner cavity (13). The inner reinforcing plate (5) is located at least one of the longitudinal beam front section (11) and the longitudinal beam middle section (12).

9. The subframe (100) according to claim 8, characterized in that, The inner reinforcing plate (5) includes: Top plate (51), the top plate (51) and the top wall of the inner cavity (13) are vertically spaced apart; Side plate (52), the side plate (52) is connected to both sides of the top plate (51), and the side plate (52) is connected to the side wall of the inner cavity (13); The side plates (52) on both sides are constructed as inclined plates that are inclined relative to the top plate (51) and away from each other; or The top plate (51) and the side plates (52) on both sides are integrally formed.

10. A vehicle, characterized in that, include: The subframe (100) according to any one of claims 1-9.

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