Subframe and vehicle

Abstract

This disclosure provides a subframe and a vehicle, belonging to the field of automotive parts technology. The subframe includes an upper plate assembly, a lower plate assembly, and a reinforcing plate. The upper plate assembly and the lower plate assembly are connected, and a cavity is formed between the upper plate assembly and the lower plate assembly. The reinforcing plate includes a top plate, a connecting plate, and a bottom plate. The reinforcing plate is located in the cavity, with the top plate connected to the upper plate assembly and the bottom plate connected to the lower plate assembly. When the upper plate assembly is subjected to forces applied by other components, the upper plate assembly can sequentially transmit the forces to the reinforcing plate and the lower plate assembly. This allows for a more uniform stress distribution on the subframe, resulting in both the upper and lower plate assemblies bearing smaller forces, thereby preventing deformation of the subframe and improving its stiffness. Therefore, the modal, stiffness, and strength properties of the reinforced subframe can be improved. Furthermore, under the same performance requirements, the thickness of the upper or lower plate assembly can be reduced, thereby reducing the weight of the subframe.

Description

Technical Field

[0001] This disclosure relates to the field of automotive parts technology, and in particular to a subframe and vehicle. Background Technology

[0002] The subframe is a crucial structural component in automotive design. Connected to the vehicle body, it serves as a vital support structure for components such as the stabilizer bar, steering gear, engine mounts, and control arms. During operation, vehicles are subjected to impacts from the ground in various directions and engine loads, necessitating sufficient strength from the subframe. In terms of comfort, the subframe needs to isolate vibrations and noise, reducing their transmission to the passenger compartment; therefore, its modal characteristics and stiffness are extremely important.

[0003] In related technologies, the subframe includes an upper plate assembly and a lower plate assembly, and a cavity is formed between the upper plate assembly and the lower plate assembly. The upper plate assembly is used to support components such as engine mounts.

[0004] However, the subframe in the relevant technology has a weak load-bearing capacity, making it prone to deformation. Summary of the Invention

[0005] This disclosure provides a subframe and a vehicle that can solve the technical problems existing in the related art. The technical solutions of the subframe and the vehicle are as follows.

[0006] In a first aspect, this disclosure provides a subframe, the subframe including an upper plate assembly, a lower plate assembly, and a reinforcing plate;

[0007] The upper plate assembly is connected to the lower plate assembly, and a cavity is formed between the upper plate assembly and the lower plate assembly;

[0008] The reinforcing plate includes a top plate, a connecting plate, and a bottom plate. The two ends of the connecting plate are connected to the top plate and the bottom plate, respectively. The top plate, the connecting plate, and the bottom plate are located in the cavity. The top plate is connected to the upper plate assembly, and the bottom plate is connected to the lower plate assembly.

[0009] In one possible implementation, the upper plate assembly includes a left longitudinal beam upper plate, a right longitudinal beam upper plate, a front crossbeam upper plate, a middle crossbeam upper plate, and a rear crossbeam upper plate. The two ends of the front crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The two ends of the middle crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The two ends of the rear crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The middle crossbeam upper plate is located between the front crossbeam upper plate and the rear crossbeam upper plate.

[0010] The lower plate assembly includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, a front crossbeam lower plate, a middle crossbeam lower plate, and a rear crossbeam lower plate. The two ends of the front crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the middle crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the rear crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The middle crossbeam lower plate is located between the front crossbeam lower plate and the rear crossbeam lower plate.

[0011] The upper plate of the middle crossbeam is connected to the lower plate of the middle crossbeam, the top plate is connected to the upper plate of the middle crossbeam, and the bottom plate is connected to the lower plate of the middle crossbeam.

[0012] In one possible implementation, the upper plate of the middle crossbeam has multiple mounting holes;

[0013] The reinforcing plate includes multiple top plates, and the number of top plates is the same as the number of mounting holes, with each top plate connected to a mounting hole.

[0014] In one possible implementation, the number of mounting holes and the top plate is three.

[0015] In one possible implementation, the reinforcing plate includes a plurality of connecting plates, the number of which is the same as the number of the top plate, and each connecting plate is connected to the top plate.

[0016] In one possible implementation, there is one connecting plate, and multiple top plates are connected to the connecting plate.

[0017] In one possible implementation, the lower plate of the middle crossbeam has a plurality of welding holes, the number of which is the same as the number of the connecting plates;

[0018] The base plate is welded to the welding hole.

[0019] In one possible implementation, the connection between the connecting plate and the base plate is arc-shaped, the welding hole is an arc-shaped strip, and the connection between the connecting plate and the base plate is welded to the welding hole.

[0020] In one possible implementation, the length of the weld hole is 45mm-55mm.

[0021] In one possible implementation, the connecting plate is bent and arranged with the bottom plate, the top plate is bent and arranged with the connecting plate, and the top plate extends in a direction away from the bottom plate.

[0022] In one possible implementation, the reinforcing plate is formed by stamping.

[0023] In one possible implementation, the radius of the chamfer at the connection between the connecting plate and the base plate is not less than 8 mm.

[0024] In one possible implementation, the radius of the chamfer at the connection between the connecting plate and the top plate is not less than 6 mm.

[0025] In one possible implementation, the upper plate assembly includes a left longitudinal beam upper plate, a right longitudinal beam upper plate, a front crossbeam upper plate, a middle crossbeam upper plate, and a rear crossbeam upper plate. The two ends of the front crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The two ends of the middle crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The two ends of the rear crossbeam upper plate are connected to the left longitudinal beam upper plate and the right longitudinal beam upper plate. The middle crossbeam upper plate is located between the front crossbeam upper plate and the rear crossbeam upper plate.

[0026] The lower plate assembly includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, a front crossbeam lower plate, a middle crossbeam lower plate, and a rear crossbeam lower plate. The two ends of the front crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the middle crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the rear crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The middle crossbeam lower plate is located between the front crossbeam lower plate and the rear crossbeam lower plate.

[0027] The upper plate of the rear crossbeam is connected to the lower plate of the rear crossbeam, the top plate is connected to the upper plate of the rear crossbeam, and the bottom plate is connected to the lower plate of the rear crossbeam.

[0028] In one possible implementation, the top plate is connected to the upper plate of the left longitudinal beam, and the bottom plate is connected to the lower plate of the left longitudinal beam; and / or,

[0029] The top plate is connected to the upper plate of the right longitudinal beam, and the bottom plate is connected to the lower plate of the right longitudinal beam; and / or,

[0030] The top plate is connected to the upper plate of the front crossbeam, and the bottom plate is connected to the lower plate of the front crossbeam.

[0031] In a second aspect, embodiments of this disclosure provide a vehicle that includes a subframe as described in any of the first aspects.

[0032] The technical solution provided in this disclosure includes at least the following beneficial effects:

[0033] This disclosure provides a subframe with a reinforcing plate between its upper and lower plate assemblies. When the upper plate assembly of the subframe is subjected to forces from other components, it can transfer the force to the reinforcing plate, which then transfers the force to the lower plate assembly. This results in a more even distribution of stress across the subframe, allowing both the upper and lower plate assemblies to bear smaller forces, thereby preventing deformation of the subframe and improving its stiffness. Therefore, the reinforcing plate enhances the subframe's modal characteristics, stiffness, and strength.

[0034] Furthermore, since the reinforcing plate can distribute the external forces on the subframe more reasonably, the thickness of the upper or lower plate assembly can be reduced under the same performance requirements (such as the stiffness and modal characteristics of the subframe), thereby reducing the weight of the subframe.

[0035] It should be understood that the following general description and the detailed description that follow are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0036] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. In the drawings:

[0037] Figure 1 This is a schematic diagram of a subframe structure shown in an embodiment of this disclosure;

[0038] Figure 2 This is a partial structural schematic diagram of a subframe according to an embodiment of the present disclosure;

[0039] Figure 3 This is a schematic diagram of the structure of the upper plate of a middle crossbeam shown in an embodiment of this disclosure;

[0040] Figure 4 This is a schematic diagram of the structure of a lower plate of a middle crossbeam according to an embodiment of this disclosure;

[0041] Figure 5 This is a schematic diagram of the structure of a reinforcing plate shown in an embodiment of this disclosure.

[0042] Legend:

[0043] 1. Upper plate assembly, 11. Upper plate of left longitudinal beam, 12. Upper plate of right longitudinal beam, 13. Upper plate of front cross beam, 14. Upper plate of middle cross beam, 141. Installation holes, 15. Upper plate of rear cross beam;

[0044] 2. Lower plate assembly, 21. Middle crossbeam lower plate, 211. Welding hole;

[0045] 3. Reinforcing plate, 31. Top plate, 32. Connecting plate, 33. Bottom plate.

[0046] The following figures illustrate specific embodiments of this disclosure, which will be described in more detail below. These figures and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this disclosure to those skilled in the art by reference to particular embodiments. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings.

[0048] The terminology used in the embodiments of this disclosure is for illustrative purposes only and is not intended to limit the disclosure. Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” “third,” and similar terms used in the patent application specification and claims of this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “a” or “one,” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising,” “including,” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected,” “linked,” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “lower,” “left,” “right,” etc., are used only to indicate relative positional relationships, and these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0049] The subframe is a crucial structural component in automotive design. Connected to the vehicle body, it serves as a vital support structure for components such as the stabilizer bar, steering gear, engine mounts, and control arms. During operation, vehicles are subjected to impacts from the ground in various directions and engine loads, necessitating sufficient strength from the subframe. In terms of comfort, the subframe needs to isolate vibrations and noise, reducing their transmission to the passenger compartment; therefore, its modal characteristics and stiffness are extremely important.

[0050] In related technologies, the subframe includes an upper plate assembly and a lower plate assembly, and a cavity is formed between the upper plate assembly and the lower plate assembly. The upper plate assembly is used to support components such as engine mounts.

[0051] However, the subframe in the relevant technology has a weak load-bearing capacity, which makes it prone to deformation.

[0052] In view of the above-mentioned technical problems, this disclosure provides a subframe that can improve the load-bearing capacity of the subframe. The subframe will now be described by way of example.

[0053] like Figure 1 and Figure 2 As shown, the subframe includes an upper plate assembly 1, a lower plate assembly 2, and a reinforcing plate 3. The upper plate assembly 1 is connected to the lower plate assembly 2, and a cavity is formed between the upper plate assembly 1 and the lower plate assembly 2. The reinforcing plate 3 includes a top plate 31, a connecting plate 32, and a bottom plate 33. The two ends of the connecting plate 32 are connected to the top plate 31 and the bottom plate 33, respectively. The top plate 31, the connecting plate 32, and the bottom plate 33 are located in the cavity. The top plate 31 is connected to the upper plate assembly 1, and the bottom plate 33 is connected to the lower plate assembly 2.

[0054] Among them, the reinforcing plate 3 can be placed at the position where the upper plate assembly 1 and the lower plate assembly 2 are subjected to greater force, and the top plate 31 is connected to the force-bearing point of the upper plate assembly 1, so that the top plate 31 can effectively support the upper plate assembly 1.

[0055] The technical solution provided in this disclosure includes a reinforcing plate 3 between the upper plate assembly 1 and the lower plate assembly 2 of the subframe. When the upper plate assembly 1 of the subframe is subjected to force applied by other components, the upper plate assembly 1 can transmit the force to the reinforcing plate 3, and then the reinforcing plate 3 can transmit the force to the lower plate assembly 2. This allows for a more uniform stress distribution on the subframe as a whole, resulting in both the upper plate assembly 1 and the lower plate assembly 2 bearing less force, thereby preventing deformation of the subframe. Therefore, the reinforcing plate 3 can enhance the modal, stiffness, and strength properties of the subframe.

[0056] Furthermore, since the reinforcing plate 3 can distribute the external forces on the subframe more reasonably, the thickness of the upper plate assembly 1 or the lower plate assembly 2 can be reduced under the same performance requirements (such as the stiffness, modality, and strength of the subframe), thereby reducing the weight of the subframe and also reducing the manufacturing cost of the subframe.

[0057] The following is an exemplary description of the implementation method and installation location of the reinforcing plate 3.

[0058] In some examples, such as Figure 1 and Figure 2 As shown, the upper plate assembly 1 includes a left longitudinal beam upper plate 11, a right longitudinal beam upper plate 12, a front crossbeam upper plate 13, a middle crossbeam upper plate 14, and a rear crossbeam upper plate 15. The two ends of the front crossbeam upper plate 13 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12, the two ends of the middle crossbeam upper plate 14 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12, and the two ends of the rear crossbeam upper plate 15 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12. The middle crossbeam upper plate 14 is located between the front crossbeam upper plate 13 and the rear crossbeam upper plate 15.

[0059] The lower plate assembly 2 includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, a front crossbeam lower plate, a middle crossbeam lower plate 21, and a rear crossbeam lower plate. The two ends of the front crossbeam lower plate are connected to the left and right longitudinal beam lower plates. The two ends of the middle crossbeam lower plate are also connected to the left and right longitudinal beam lower plates. The two ends of the rear crossbeam lower plate are connected to the left and right longitudinal beam lower plates. The middle crossbeam lower plate 21 is located between the front and rear crossbeam lower plates. The middle crossbeam upper plate 14 is connected to the middle crossbeam lower plate 21, the top plate 31 is connected to the middle crossbeam upper plate 14, and the bottom plate 33 is connected to the middle crossbeam lower plate 21.

[0060] like Figure 2 As shown, the edges of the upper plate 14 and the lower plate 21 of the middle crossbeam have folded edges. Therefore, the folded edges of the upper plate 14 and the lower plate 21 can be fastened together, and then welded to form the middle crossbeam. It is understood that the upper and lower plates of other beams in the subframe can also be connected in the same way to form the left longitudinal beam, right longitudinal beam, front crossbeam, and rear crossbeam.

[0061] The upper crossbeam plate 14 supports the engine mount, which exerts a significant load on it. If no reinforcing plate 3 is provided between the upper crossbeam plate 14 and the lower crossbeam plate 21, they are only connected at the edges, making it difficult to transfer the load on the upper crossbeam plate 14 to the lower crossbeam plate 21. This results in the upper crossbeam plate 14 bearing a large force, making it prone to deformation.

[0062] By installing a reinforcing plate 3 between the upper plate 14 and the lower plate 21 of the middle crossbeam, the connection between them is strengthened, allowing the load on the upper plate 14 to be transferred to the lower plate 21 via the reinforcing plate 3. This disperses the force applied by the engine mount across the upper plate 14, the reinforcing plate 3, and the lower plate 21, reducing the force on the upper plate 14 and thus lowering the risk of subframe deformation. Furthermore, the top plate 31 of the upper plate 14 and the reinforcing plate 3 forms a double-layer structure, significantly improving the local installation strength and rigidity of the upper plate 14.

[0063] In addition, under the same requirements for subframe modality, stiffness and strength performance, the thickness of the upper plate 14 and the lower plate 21 of the middle crossbeam can be reduced by setting the reinforcing plate 3, thereby achieving the effect of weight reduction and cost reduction.

[0064] In some examples, such as Figure 2 and Figure 3As shown, the upper plate 14 of the middle crossbeam has multiple mounting holes 141. The reinforcing plate 3 includes multiple top plates 31, and the number of top plates 31 is the same as the number of mounting holes 141. Each top plate 31 is connected to a mounting hole 141. The mounting holes 141 are used to mount the engine mount. Correspondingly, the reinforcing plate 3 is provided with multiple bolt holes, so that the engine mount, the upper plate 14 of the middle crossbeam, and the top plate 31 are fixedly connected by bolts.

[0065] Multiple top plates 31 are arranged separately, and the specific position of each top plate 31 is determined according to the position of the mounting holes 141 on the upper plate 14 of the middle crossbeam. For example... Figure 2 and Figure 5 As shown, the mounting holes 141 on the upper plate 14 of the middle crossbeam are arranged in a triangular pattern. Correspondingly, the multiple top plates 31 are also arranged in a triangular pattern, so that the bolt holes on the top plates 31 correspond one-to-one with the mounting holes 141.

[0066] It is understandable that if multiple mounting holes 141 are arranged in a straight line, then multiple top plates 31 are also arranged in a straight line.

[0067] For example, such as Figure 2 and Figure 3 As shown, there are three mounting holes 141 and three top plates 31. The specific number of mounting holes 141 and top plates 31 needs to be set according to the mounting points of the engine mount, and the number of mounting holes 141 and top plates 31 is the same as the number of mounting points of the engine mount.

[0068] Of course, in another example, the reinforcing plate 3 may have a top plate 31 with multiple bolt holes, thereby connecting the top plate 31 to the upper plate 14 of the middle crossbeam. This disclosure does not specifically limit the number of top plates 31.

[0069] In some examples, such as Figure 2 As shown, the reinforcing plate 3 includes multiple connecting plates 32, the number of which is the same as the number of top plates 31. Each connecting plate 32 is connected to the top plate 31. Each top plate 31 is connected to the bottom plate 33 via the connecting plates 32. The reinforcing plate 3 is claw-shaped. In this way, the force borne by each mounting hole of the upper plate 14 of the middle crossbeam is transmitted to the top plate 31, and each top plate 31 can transmit the force to the bottom plate 33 via the connecting plates 32.

[0070] It should be noted that the heights of the multiple connecting plates 32 can be the same or different. The height of the connecting plates 32 needs to be determined based on the distance between the lower plate 21 of the middle crossbeam and the mounting holes 141. If the distance between the lower plate 21 of the middle crossbeam and each mounting hole 141 is the same, then the heights of the multiple connecting plates 32 are the same. If the distance between the lower plate 21 of the middle crossbeam and each mounting hole 141 is different, then the heights of the multiple connecting plates 32 are different.

[0071] Of course, in other examples, there may be only one connecting plate 32, such as the bottom of the connecting plate 32 being connected to the center of the bottom plate 33, and each top plate 31 being connected to the same connecting plate 32.

[0072] In some examples, such as Figure 2 and Figure 5 As shown, the lower plate 21 of the middle crossbeam has multiple welding holes 211, the number of which is the same as the number of connecting plates 32. The base plate 33 is welded to the welding holes 211. This allows for a high connection strength between the base plate 33 and the lower plate 21 of the middle crossbeam, and the welding connection is low-cost and easy to operate.

[0073] The positions of the multiple welding holes 211 can be set according to the positions of the multiple top plates 31 to ensure a high connection strength between the bottom plate 33 and the lower plate 21 of the middle crossbeam, and to prevent the bottom plate 33 from detaching from the lower plate 21 of the middle crossbeam.

[0074] In other examples, the number of weld holes 211 may be greater than the number of connecting plates 32.

[0075] In some examples, such as Figure 2 , Figure 4 and Figure 5 As shown, the connection between the connecting plate 32 and the base plate 33 is arc-shaped, and the welding hole 211 is an arc-shaped strip. The connection between the connecting plate 32 and the base plate 33 is welded to the welding hole 211. In this way, the shape of the welding hole 211 and the edge of the base plate 33 can be more closely matched, thereby enhancing the connection strength between the base plate 33 and the lower plate 21 of the middle crossbeam.

[0076] In other examples, the welding hole 211 may also be in other shapes, such as circular, straight strip, etc., and the embodiments disclosed herein do not specifically limit this.

[0077] In some examples, the length of the weld hole 211 is 45mm-55mm. If the length of the weld hole 211 is too small, it will be difficult to process. If the length of the weld hole 211 is too long, it may affect the mechanical properties of the weld.

[0078] In other examples, the base plate 33 can also be connected to the lower plate 21 of the middle crossbeam in other ways, such as by bolts.

[0079] In some examples, such as Figure 2 As shown, the connecting plate 32 and the bottom plate 33 are arranged in a bent configuration, and the top plate 31 and the connecting plate 32 are also arranged in a bent configuration, with the top plate 31 extending in a direction away from the bottom plate 33. This makes the structure of the reinforcing plate 3 simpler and easier to process.

[0080] In some examples, the reinforcing plate 3 is formed by stamping. The reinforcing plate 3 is made of high-strength steel. For example... Figure 5 As shown, in order to ensure that the reinforcing plate 3 can be stamped, the radius R1 of the chamfer at the connection between the connecting plate 32 and the bottom plate 33 is not less than 8mm, and the radius R2 of the chamfer at the connection between the connecting plate 32 and the top plate 31 is not less than 6mm.

[0081] In some examples, the upper plate assembly 1 includes a left longitudinal beam upper plate 11, a right longitudinal beam upper plate 12, a front crossbeam upper plate 13, a middle crossbeam upper plate 14, and a rear crossbeam upper plate 15. The two ends of the front crossbeam upper plate 13 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12, the two ends of the middle crossbeam upper plate 14 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12, and the two ends of the rear crossbeam upper plate 15 are connected to the left longitudinal beam upper plate 11 and the right longitudinal beam upper plate 12. The middle crossbeam upper plate 14 is located between the front crossbeam upper plate 13 and the rear crossbeam upper plate 15.

[0082] The lower plate assembly 2 includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, a front crossbeam lower plate, a middle crossbeam lower plate 21, and a rear crossbeam lower plate. The two ends of the front crossbeam lower plate are connected to the left and right longitudinal beam lower plates. The two ends of the middle crossbeam lower plate are also connected to the left and right longitudinal beam lower plates. The two ends of the rear crossbeam lower plate are connected to the left and right longitudinal beam lower plates. The middle crossbeam lower plate 21 is located between the front and rear crossbeam lower plates. The rear crossbeam upper plate 15 is connected to the rear crossbeam lower plate, the top plate 31 is connected to the rear crossbeam upper plate 15, and the bottom plate 33 is connected to the rear crossbeam lower plate.

[0083] The upper plate 15 and the lower plate of the rear crossbeam are connected to form the rear crossbeam, which supports the steering gear. When the steering gear applies a force to the rear crossbeam, the upper plate 15, the reinforcing plate 3, and the lower plate of the rear crossbeam all bear the force, making the rear crossbeam less prone to deformation.

[0084] In some examples, the reinforcing plate 3 may also be connected to the upper plate 11 of the left longitudinal beam and the lower plate of the left longitudinal beam, and / or to the upper plate 12 of the right longitudinal beam and the lower plate of the right longitudinal beam, and / or to the upper plate 13 of the front crossbeam and the lower plate of the front crossbeam.

[0085] The specific number and position of the top plate 31 of the reinforcing plate 3 can be arranged according to the stress points (mounting holes) of the upper plate 11 of the left longitudinal beam, the upper plate 12 of the right longitudinal beam, and the upper plate 13 of the front cross beam, so that the reinforcing plate 3 can effectively support the upper plate assembly 1 and the lower plate assembly 2.

[0086] This disclosure also provides a vehicle that includes the aforementioned subframe.

[0087] The subframe is connected to the vehicle body.

[0088] The technical solution provided in this disclosure includes a reinforcing plate between the cavity formed by the upper plate assembly and the lower plate assembly of the subframe. This enhances the load-bearing capacity of the subframe and makes the load distribution on the subframe more reasonable, thereby improving the modal, stiffness, and strength properties of the subframe and ultimately increasing the connection strength between the subframe and other components of the vehicle.

[0089] The following description is merely an optional embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A subframe, characterized in that, The subframe includes an upper plate assembly (1), a lower plate assembly (2), and a reinforcing plate (3); The upper plate assembly (1) is connected to the lower plate assembly (2), and a cavity is formed between the upper plate assembly (1) and the lower plate assembly (2); The upper plate assembly (1) includes a left longitudinal beam upper plate (11), a right longitudinal beam upper plate (12), and a front crossbeam upper plate (13), a middle crossbeam upper plate (14), and a rear crossbeam upper plate (15) arranged in sequence. The two ends of the front crossbeam upper plate (13), the two ends of the middle crossbeam upper plate (14), and the two ends of the rear crossbeam upper plate (15) are respectively connected to the left longitudinal beam upper plate (11) and the right longitudinal beam upper plate (12). The lower plate assembly (2) includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, and a front crossbeam lower plate, a middle crossbeam lower plate (21), and a rear crossbeam lower plate arranged in sequence. The two ends of the front crossbeam lower plate, the two ends of the middle crossbeam lower plate, and the two ends of the rear crossbeam lower plate are respectively connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The middle crossbeam upper plate (14) is connected to the middle crossbeam lower plate (21). The reinforcing plate (3) is located in the cavity and includes a top plate (31), a connecting plate (32) and a bottom plate (33) connected in sequence. The upper plate (14) of the middle crossbeam has multiple mounting holes (141). The number of top plates (31) is the same as the number of mounting holes (141). Each top plate (31) is connected to the mounting hole (141). The bottom plate (33) is connected to the lower plate (21) of the middle crossbeam.

2. The subframe according to claim 1, characterized in that, The reinforcing plate (3) includes a plurality of connecting plates (32), the number of which is the same as the number of the top plate (31), and each connecting plate (32) is connected to the top plate (31).

3. The subframe according to claim 2, characterized in that, The lower plate (21) of the middle crossbeam has a plurality of welding holes (211), the number of which is the same as the number of the connecting plate (32); The base plate (33) is welded to the welding hole (211).

4. The subframe according to claim 3, characterized in that, The connection between the connecting plate (32) and the base plate (33) is arc-shaped, and the welding hole (211) is an arc-shaped strip. The connection between the connecting plate (32) and the base plate (33) is welded to the welding hole (211).

5. The subframe according to any one of claims 1-4, characterized in that, The connecting plate (32) is bent and arranged with the bottom plate (33), the top plate (31) is bent and arranged with the connecting plate (32), and the top plate (31) extends in a direction away from the bottom plate (33).

6. The subframe according to any one of claims 1-4, characterized in that, The reinforcing plate (3) is formed by stamping.

7. The subframe according to any one of claims 1-4, characterized in that, The upper plate assembly (1) includes a left longitudinal beam upper plate (11), a right longitudinal beam upper plate (12), a front crossbeam upper plate (13), a middle crossbeam upper plate (14), and a rear crossbeam upper plate (15). The two ends of the front crossbeam upper plate (13) are connected to the left longitudinal beam upper plate (11) and the right longitudinal beam upper plate (12). The two ends of the middle crossbeam upper plate (14) are connected to the left longitudinal beam upper plate (11) and the right longitudinal beam upper plate (12). The two ends of the rear crossbeam upper plate (15) are connected to the left longitudinal beam upper plate (11) and the right longitudinal beam upper plate (12). The middle crossbeam upper plate (14) is located between the front crossbeam upper plate (13) and the rear crossbeam upper plate (15). The lower plate assembly (2) includes a left longitudinal beam lower plate, a right longitudinal beam lower plate, a front crossbeam lower plate, a middle crossbeam lower plate (21), and a rear crossbeam lower plate. The two ends of the front crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the middle crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The two ends of the rear crossbeam lower plate are connected to the left longitudinal beam lower plate and the right longitudinal beam lower plate. The middle crossbeam lower plate (21) is located between the front crossbeam lower plate and the rear crossbeam lower plate. The upper plate (15) of the rear crossbeam is connected to the lower plate of the rear crossbeam, the top plate (31) is connected to the upper plate (15) of the rear crossbeam, and the bottom plate (33) is connected to the lower plate of the rear crossbeam.

8. A vehicle, characterized in that, The vehicle includes a subframe as described in any one of claims 1-7.

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