Subframe and vehicle

Abstract

This utility model discloses a subframe and a vehicle, relating to the field of vehicle chassis technology. The subframe includes: a frame longitudinal beam, a frame rear crossbeam, and longitudinal and transverse beam reinforcing plates. The end of the frame rear crossbeam is connected to the end of the frame longitudinal beam, and the longitudinal and transverse beam reinforcing plates are respectively connected to the frame longitudinal beam and the frame rear crossbeam; mounting bosses are respectively connected to the frame longitudinal beam, the frame rear crossbeam, and the longitudinal and transverse beam reinforcing plates; and mounting brackets are connected to the mounting bosses. According to this utility model, the subframe avoids the problem of welding discontinuities in the mounting bracket, improves the rigidity and strength performance of the mounting bracket, makes the stress on the mounting bracket more uniform, reduces stress concentration, and ensures that it meets the requirements of the entire vehicle.

Description

Technical Field

[0001] This utility model relates to the field of vehicle chassis technology, and in particular to a subframe and a vehicle having the subframe. Background Technology

[0002] In related technologies, there is a significant height difference at the connection between the rear crossbeam and the longitudinal beam of the vehicle frame. Directly welding the mounting bracket to the longitudinal beam and the rear crossbeam of the vehicle frame will result in significant welding interruptions. The large height difference will also lead to low rigidity of the mounting bracket, uneven stress distribution, and stress concentration, thereby causing the rigidity and strength performance of the mounting bracket to fail to meet the requirements of the whole vehicle. Utility Model Content

[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes a subframe that can avoid the problem of welding discontinuities in the mounting bracket, improve the rigidity and strength performance of the mounting bracket, make the mounting bracket more evenly stressed, and prevent stress concentration, thus ensuring that it meets the requirements of the whole vehicle.

[0004] The subframe according to an embodiment of the present utility model includes: a frame longitudinal beam, a frame rear crossbeam, and longitudinal and transverse beam reinforcing plates, wherein the end of the frame rear crossbeam is connected to the end of the frame longitudinal beam, and the longitudinal and transverse beam reinforcing plates are respectively connected to the frame longitudinal beam and the frame rear crossbeam; a mounting boss, which is respectively connected to the frame longitudinal beam, the frame rear crossbeam, and the longitudinal and transverse beam reinforcing plates; and a mounting bracket, which is connected to the mounting boss.

[0005] According to the subframe of this utility model embodiment, by setting mounting bosses, the rear crossbeam, longitudinal and transverse beam reinforcing plates, and longitudinal beam of the frame are strengthened, thereby improving the rigidity and strength of the connection between the longitudinal beam and the rear crossbeam and preventing excessive deformation of the longitudinal beam and the rear crossbeam. By connecting the mounting bracket to the mounting bosses, a flat welding surface is provided for the mounting bracket, thereby avoiding the problem of welding discontinuity of the mounting bracket due to the height difference between the longitudinal beam and the rear crossbeam. This improves the rigidity and strength performance of the mounting bracket, makes the mounting bracket more evenly stressed, and is less prone to stress concentration, ensuring that it meets the requirements of the whole vehicle.

[0006] According to some embodiments of the present invention, the subframe is welded and fixed above the longitudinal beam of the frame, the rear crossbeam of the frame, and the reinforcing plates of the longitudinal and crossbeams, and the mounting bracket is welded and fixed above the mounting boss.

[0007] According to some embodiments of the present invention, a first welded portion is formed between the mounting boss and the longitudinal beam of the frame, a second welded portion is formed between the mounting boss and the rear crossbeam of the frame, and a third welded portion is formed between the mounting boss and the reinforcing plates of the longitudinal and transverse beams; wherein the first welded portion, the second welded portion and the third welded portion are all spaced apart.

[0008] According to some embodiments of the present invention, a fourth welding portion is formed between the mounting boss and the mounting bracket in the subframe; wherein the ends of the second welding portion, the third welding portion and / or the fourth welding portion have bent and extended welding extension portions, the length of the welding extension portion is not less than L, and satisfies: 4.5mm≤L≤5.5mm.

[0009] According to some embodiments of the present invention, the first welded portion and the second welded portion are spaced apart and form a welding clearance notch, wherein the width of the welding clearance notch is not less than D and satisfies: 7.5mm≤D≤8.5mm.

[0010] According to some embodiments of the present invention, the subframe of the vehicle frame includes a central boss plate and a connecting flange, wherein the connecting flange is arranged around the central boss plate; wherein the connecting flange is connected to the longitudinal beam of the vehicle frame, the rear crossbeam of the vehicle frame and the reinforcing plates of the longitudinal and crossbeams respectively, and the mounting bracket is connected to the central boss plate.

[0011] According to some embodiments of the present invention, in the subframe, the connecting flange is bent relative to the intermediate boss plate, and the frame longitudinal beam, the frame rear crossbeam and the longitudinal and transverse beam reinforcing plates are all spaced apart from the intermediate boss plate so as to define the central reinforcing cavity together with the connecting flange.

[0012] According to some embodiments of the present invention, in the subframe, at least a portion of the intermediate boss plate is constructed as a planar region, and at least a portion of the mounting bracket is welded to the planar region.

[0013] According to some embodiments of the present invention, the subframe has two longitudinal beams, which are respectively connected to the rear crossbeam of the frame. The outer side of each longitudinal beam is connected to the rear crossbeam of the frame through the longitudinal and transverse beam reinforcing plates. Each longitudinal beam is provided with the mounting boss and the mounting bracket.

[0014] This utility model also proposes a vehicle.

[0015] The vehicle according to the present invention includes a subframe according to any of the above embodiments.

[0016] The vehicle and the aforementioned subframe have the same advantages over the prior art, which will not be repeated here.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 2 ;

[0021] Figure 3 This is a partial structural diagram of the subframe according to an embodiment of the present utility model. Figure 1 ;

[0022] Figure 4 This is a partial structural diagram of the subframe according to an embodiment of the present utility model. Figure 2 ;

[0023] Figure 5 This is a partial cross-sectional view of the subframe according to an embodiment of the present utility model;

[0024] Figure 6 This is a structural schematic diagram of the mounting boss component according to an embodiment of the present utility model;

[0025] Figure 7 This is a schematic diagram of the mounting bracket according to an embodiment of the present utility model.

[0026] Figure label:

[0027] Subframe 100,

[0028] Frame longitudinal beam 1, frame rear crossbeam 2, longitudinal and crossbeam reinforcement plates 3, mounting boss 4, intermediate boss plate 41, connecting flange 42, stress relief hole 43.

[0029] Mounting bracket 5, first welding part 61, second welding part 62, third welding part 63, fourth welding part 64, welding extension part 65, clearance notch 66, central reinforcing cavity 7. Detailed Implementation

[0030] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0031] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0034] The following is for reference. Figures 1-7 The subframe 100 according to an embodiment of the present utility model can avoid the problem of welding interruption in the mounting bracket 5, improve the rigidity and strength performance of the mounting bracket 5, make the mounting bracket 5 more uniformly stressed, and prevent stress concentration, thus ensuring that it meets the requirements of the whole vehicle.

[0035] like Figures 1-7 As shown, a subframe 100 according to an embodiment of the present invention includes: a frame longitudinal beam 1, a frame rear crossbeam 2, longitudinal and crossbeam reinforcing plates 3, mounting bosses 4, and mounting brackets 5.

[0036] The subframe 100 is a support bracket for the axle and suspension, which can improve suspension stiffness, change ride firmness, and block vibration and noise. The subframe 100 can connect the suspension and axle and then connect to the main frame, thereby improving the comfort and stability of the vehicle. The subframe 100 of this utility model can be a front subframe 100 at the front of the vehicle or a rear subframe 100. The following description takes the rear subframe 100 as an example. The rear subframe 100 is located at the rear of the vehicle and is an important part of the rear axle. The subframe 100 can support the rear suspension system of the vehicle and is rigidly connected to the vehicle body through shock absorbers to enhance the stability, comfort and handling of the vehicle.

[0037] The subframe 100 includes a frame longitudinal beam 1, a frame rear crossbeam 2, and longitudinal and transverse beam reinforcing plates 3. The frame longitudinal beam 1 extends along the front-rear direction of the vehicle to form longitudinal support for the subframe 100, and the frame rear crossbeam 2 extends along the left-right direction of the vehicle to form lateral support for the subframe 100. The longitudinal and transverse beam reinforcing plates 3 are used to reinforce the frame longitudinal beam 1 and the frame rear crossbeam 2, improve the structural strength and rigidity of the frame longitudinal beam 1 and the frame rear crossbeam 2, thereby improving the overall strength and stability of the subframe 100 and preventing excessive deformation of the frame rear crossbeam 2 and the frame longitudinal beam 1 in the event of a vehicle collision.

[0038] Reference Appendix Figure 1 As shown, the end of the rear crossbeam 2 of the frame is connected to the end of the longitudinal beam 1 of the frame, so that the connection between the rear crossbeam 2 and the longitudinal beam 1 of the frame can support and reinforce each other, which is conducive to forming a stable subframe 100 structure. The longitudinal and transverse beam reinforcing plates 3 are connected to the longitudinal beam 1 and the rear crossbeam 2 of the frame respectively. That is, one end of the longitudinal and transverse beam reinforcing plates 3 is connected to the longitudinal beam 1 of the frame, and the other end of the longitudinal and transverse beam reinforcing plates 3 is connected to the rear crossbeam 2 of the frame. Thus, the longitudinal and transverse beam reinforcing plates 3, the longitudinal beam 1 and the rear crossbeam 2 of the frame are connected into an integral structure, which improves the structural strength and rigidity of the longitudinal beam 1 and the rear crossbeam 2 of the frame, making the subframe 100 structure more stable.

[0039] Furthermore, the subframe 100 also includes a mounting boss 4 and a mounting bracket 5. The mounting boss 4 is connected to the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 of the frame, respectively, and the mounting bracket 5 is connected to the mounting boss 4.

[0040] Specifically, the mounting bracket 5 is used to install the rear upper control arm to ensure its stable movement. The mounting bracket 5 is connected to the mounting boss 4, meaning the mounting boss 4 connects to the mounting bracket 5 to ensure its installation stability. The mounting boss 4 is connected to the frame longitudinal beam 1, the frame rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3, respectively. This allows the frame longitudinal beam 1, the frame rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 to provide stable support for the mounting boss 4, ensuring its installation stability. Simultaneously, the mounting boss 4 further strengthens the frame rear crossbeam 2, the longitudinal and transverse beam reinforcing plates 3, and the frame longitudinal beam 1, further improving the rigidity and strength at the connection between the frame longitudinal beam 1 and the frame rear crossbeam 2, preventing excessive deformation of the frame longitudinal beam 1 and the frame rear crossbeam 2. In actual design, the mounting boss 4 can be welded to the frame longitudinal beam 1, the frame rear crossbeam 2 and the longitudinal and transverse beam reinforcing plates 3, and the mounting bracket 5 can be welded to the mounting boss 4 to ensure the stability and reliability of the connection between the mounting boss 4 and the mounting bracket 5.

[0041] It should be noted that in the prior art, the mounting bracket 5 is directly welded to the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and crossbeam reinforcing plates 3 of the frame. Due to the large height difference at the connection between the rear crossbeam 2 and the longitudinal beam 1, directly welding the mounting bracket 5 to the longitudinal beam 1 and the rear crossbeam 2 will result in a large welding interruption. The large height difference will also make the mounting bracket 5 less rigid, unevenly stressed, and cause stress concentration, thus causing the rigidity and strength performance of the mounting bracket 5 to fail to meet the requirements of the whole vehicle.

[0042] This application provides a flat welding surface for the mounting bracket 5 by setting a mounting boss 4, thereby avoiding the problem of welding discontinuity in the mounting bracket 5 caused by the height difference between the longitudinal beam 1 and the rear cross beam 2 of the frame. This improves the rigidity and strength performance of the mounting bracket 5, makes the force on the mounting bracket 5 more uniform, and makes it less prone to stress concentration, thus ensuring that it meets the requirements of the whole vehicle.

[0043] According to the subframe 100 of this utility model embodiment, by setting the mounting boss 4, the rear crossbeam 2, the longitudinal and transverse beam reinforcing plates 3, and the longitudinal beam 1 of the frame are strengthened, thereby improving the rigidity and strength of the connection between the longitudinal beam 1 and the rear crossbeam 2 of the frame and preventing excessive deformation of the longitudinal beam 1 and the rear crossbeam 2 of the frame; by connecting the mounting bracket 5 to the mounting boss 4, a flat welding plane is provided for the mounting bracket 5, thereby avoiding the problem of welding discontinuity of the mounting bracket 5 due to the height difference between the longitudinal beam 1 and the rear crossbeam 2 of the frame, thereby improving the rigidity and strength performance of the mounting bracket 5, making the mounting bracket 5 more evenly stressed, less prone to stress concentration, and ensuring that it meets the requirements of the whole vehicle.

[0044] In some embodiments, the mounting boss 4 is welded and fixed above the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 of the vehicle frame, and the mounting bracket 5 is welded and fixed above the mounting boss 4.

[0045] Specifically, such as Figure 1 and Figure 2 As shown, the mounting boss 4 is welded and fixed above the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 of the frame. That is, the mounting boss 4 is welded to the upper surface of the longitudinal beam 1, the upper surface of the rear crossbeam 2, and the upper surface of the longitudinal and transverse beam reinforcing plates 3 to achieve fixed installation of the mounting boss 4, ensure the connection strength and stability between the mounting boss 4 and the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3, and prevent the mounting boss 4 from separating from the longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3.

[0046] like Figure 3 and Figure 4 As shown, the mounting bracket 5 is welded and fixed to the upper part of the mounting boss 4, that is, the mounting bracket 5 and the upper surface of the mounting boss 4 are welded together to achieve the fixed installation of the mounting bracket 5, ensure the connection strength and stability between the mounting bracket 5 and the mounting boss 4. At the same time, the upper surface of the mounting boss 4 can provide a flat overlapping surface for the welding position of the mounting bracket 5, thereby improving the strength and rigidity of the mounting bracket 5, preventing local stress concentration and easy breakage, and thus extending the service life of the mounting bracket 5.

[0047] In some embodiments, a first welded portion 61 is formed between the mounting boss 4 and the longitudinal beam 1 of the frame, a second welded portion 62 is formed between the mounting boss 4 and the rear crossbeam 2 of the frame, and a third welded portion 63 is formed between the mounting boss 4 and the longitudinal and transverse beam reinforcing plates 3.

[0048] Specifically, such as Figure 4As shown, a first welding part 61 is formed between the mounting boss 4 and the longitudinal beam 1 of the frame, that is, at the outer edge where the mounting boss 4 connects to the longitudinal beam 1 of the frame, the mounting boss 4 and the longitudinal beam 1 of the frame are welded together through the first welding part 61. A second welding part 62 is formed between the mounting boss 4 and the rear crossbeam 2 of the frame, that is, at the outer edge where the mounting boss connects to the rear crossbeam 2 of the frame, the mounting boss and the rear crossbeam 2 of the frame are welded together through the second welding part 62. A third welding part 63 is formed between the mounting boss 4 and the longitudinal and transverse beam reinforcing plates 3, that is, at the outer edge where the mounting boss 4 connects to the longitudinal and transverse beam reinforcing plates 3, the mounting boss 4 and the longitudinal and transverse beam reinforcing plates 3 are welded together through the third welding part 63.

[0049] Furthermore, the first welding part 61, the second welding part 62 and the third welding part 63 are all distributed at intervals.

[0050] Specifically, such as Figure 4 As shown, the first welded part 61 is located on the longitudinal beam 1 of the frame, extending obliquely from front to back along the length of the longitudinal beam 1, i.e., the front-rear direction of the vehicle. The third welded part 63 is located on the longitudinal and transverse beam reinforcing plate 3, also extending obliquely from front to back, and the first welded part 61 and the third welded part 63 form an angle. The first welded part 61 and the third welded part 63 are distributed separately. This not only increases the welding area between the mounting boss 4 and the longitudinal beam 1 and the longitudinal and transverse beam reinforcing plate 3, making the connection between the mounting boss 4 and the longitudinal beam 1 and the longitudinal and transverse beam reinforcing plate 3 more firm and reliable, but also avoids the concentrated distribution of the first welded part 61 and the third welded part 63, which would lead to stress concentration. This disperses the stress at the connection between the mounting boss 4 and the longitudinal beam 1 and the longitudinal and transverse beam reinforcing plate 3, improving the overall load-bearing capacity of the structure. It also avoids the heat effect between the first welded part 61 and the third welded part 63 during the welding process, which would affect the structure of the mounting boss 4.

[0051] The second weld 62 is located on the rear crossbeam 2 of the frame. The second weld 62 extends and bends along the length of the rear crossbeam 2 of the frame, and is spaced apart from the first weld 61 and the third weld 63. This increases the welding area between the mounting boss 4 and the rear crossbeam 2 of the frame, making the connection between the mounting boss 4 and the crossbeam more secure and reliable. It also avoids the second weld 62 being too close to the first weld 61 and the third weld 63, which would cause stress concentration. This disperses the stress at the connection between the mounting boss 4 and the rear crossbeam 2 of the frame, and at the connection between the mounting boss 4 and the longitudinal and transverse beam reinforcing plates 3, improving the overall load-bearing capacity of the structure. It also avoids the heat effect between the second weld 62 and the first weld 61 and the third weld 63 during the welding process, which would affect the structure of the mounting boss 4.

[0052] Therefore, by distributing the first welded part 61, the second welded part 62 and the third welded part 63 at intervals, the stress is effectively dispersed, excessive local stress is avoided, and the load-bearing capacity of the mounting boss 4 is improved.

[0053] In some embodiments, a fourth welded portion 64 is formed between the mounting boss 4 and the mounting bracket 5.

[0054] Specifically, such as Figure 4 As shown, a fourth welding part 64 is formed between the mounting boss 4 and the mounting bracket 5, that is, at the outer edge where the mounting boss 4 and the mounting bracket 5 are connected, the mounting boss 4 and the mounting bracket 5 are welded together by the fourth welding part 64.

[0055] Furthermore, the ends of the second welding part 62, the third welding part 63 and / or the fourth welding part 64 have a bent and extended welding extension 65, the length of which is not less than L and satisfies: 4.5mm≤L≤5.5mm.

[0056] Specifically, such as Figure 4 As shown, the ends of the second welded part 62, the third welded part 63, and the fourth welded part 64 are all provided with bent and extended weld extensions 65. In this way, the welding direction of the ends of the second welded part 62, the third welded part 63, and the fourth welded part 64 can be changed by the weld extensions 65, so as to reduce the stress concentration problem at the ends of the second welded part 62, the third welded part 63, and the fourth welded part 64, improve the durability of the ends of the second welded part 62, the third welded part 63, and the fourth welded part 64, thereby improving the reliability and stability of the connection between the mounting boss 4 and the frame longitudinal beam 1, the frame rear cross beam 2, and the longitudinal and transverse beam reinforcing plates 3.

[0057] The length of the welding extension 65 is not less than L, that is, the length of the welding extension 65 needs to be greater than or equal to L. L can be 4.5mm, 4.6mm, 4.7mm, 4.8mm, 4.9mm, 5.0mm, 5.1mm, 5.2mm, 5.3mm, 5.4mm, 5.5mm, etc. This ensures that the length of the welding extension 65 is long enough to play its role and effectively reduce stress concentration.

[0058] In some embodiments, the first welding portion 61 and the second welding portion 62 are spaced apart and have a welding clearance notch 66. The width of the welding clearance notch 66 is not less than D and satisfies: 7.5mm≤D≤8.5mm.

[0059] Specifically, such as Figure 4As shown, the ends of the first welding part 61 and the second welding part 62 are spaced apart, and a welding clearance notch 66 is formed between the ends of the first welding part 61 and the second welding part 62. Since the height of the frame longitudinal beam 1 is lower than the height of the frame rear crossbeam 2, there is a height difference between the frame longitudinal beam 1 and the frame rear crossbeam 2. Therefore, when the mounting boss 4 is connected to the frame rear crossbeam 2 and the frame longitudinal beam 1, it needs to be bent significantly to achieve the connection with the frame rear crossbeam 2 and the frame longitudinal beam 1. In order to avoid bending process forming problems, the welding clearance notch 66 is provided. That is to say, the welding clearance notch 66 is used to avoid bending process forming problems of the mounting boss 4.

[0060] The width of the welding clearance notch 66 shall not be less than D, that is, the width of the welding clearance notch 66 shall be greater than or equal to D. D can be 7.5mm, 7.6mm, 7.7mm, 7.8mm, 7.9mm, 8.0mm, 8.1mm, 8.2mm, 8.3mm, 8.4mm, 8.5mm or other width values ​​within the range of 7.5mm to 8.5mm. However, the width of the welding clearance notch 66 shall not be too large to avoid affecting the structural strength of the mounting boss 4. Thus, by setting the width of the welding clearance notch 66 to the above range, the mounting boss 4 is guaranteed to have sufficient structural strength while effectively avoiding the problem of welding edge burning.

[0061] In some embodiments, the mounting boss 4 includes a central boss plate 41 and a connecting flange 42, the connecting flange 42 being disposed around the central boss plate 41.

[0062] Specifically, such as Figure 6 As shown, the mounting boss 4 includes a middle boss plate 41 and a connecting flange 42. The connecting flange 42 is arranged around the periphery of the middle boss plate 41. The connecting flange 42 is used to connect the frame longitudinal beam 1, the frame rear cross beam 2 and the longitudinal and transverse beam reinforcing plates 3. The middle boss plate 41 is used to connect the mounting bracket 5.

[0063] Furthermore, the connecting flange 42 is connected to the longitudinal beam 1 of the frame, the rear crossbeam 2 of the frame, and the longitudinal and transverse beam reinforcing plates 3 respectively, and the mounting bracket 5 is connected to the intermediate boss plate 41.

[0064] Specifically, such as Figure 4 and Figure 6As shown, the connecting flange 42 is respectively attached to the upper surface of the frame longitudinal beam 1, the frame rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3, so as to achieve a tight fit between the mounting boss 4 and the frame longitudinal beam 1, the frame rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3, which facilitates the welding and fixing between the mounting boss 4 and the frame longitudinal beam 1, the frame rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3. The mounting bracket 5 also has a connecting flange, which is tightly attached to the upper surface of the intermediate boss plate 41, which facilitates the welding and fixing between the mounting boss 4 and the mounting bracket 5.

[0065] In some embodiments, the connecting flange 42 is bent relative to the intermediate boss plate 41, and the frame longitudinal beam 1, the frame rear crossbeam 2 and the longitudinal and transverse beam reinforcing plates 3 are all spaced apart from the intermediate boss plate 41, so as to define the central reinforcing cavity 7 together with the connecting flange 42.

[0066] Specifically, such as Figure 4 , Figure 5 and Figure 6 As shown, the connecting flange 42 bends outward relative to the intermediate boss plate 41. The frame longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 are all spaced a certain distance from the intermediate boss plate 41 and do not contact each other. This allows the frame longitudinal beam 1, the rear crossbeam 2, and the longitudinal and transverse beam reinforcing plates 3 to jointly define the central reinforcing cavity 7 with the intermediate boss plate 41. The central reinforcing cavity 7 can further improve the strength and rigidity of the connection between the frame longitudinal beam 1 and the rear crossbeam 2, making the connection between the frame longitudinal beam 1 and the rear crossbeam 2 more stable and reliable. At the same time, the central reinforcing cavity 7 can also absorb some impact force to reduce the impact energy transmitted to the frame longitudinal beam 1 and the rear crossbeam 2, thereby preventing excessive deformation of the frame longitudinal beam 1 and the rear crossbeam 2, and further improving the overall structural stability of the subframe 100.

[0067] In some embodiments, at least a portion of the intermediate boss plate 41 is configured as a planar region, and at least a portion of the mounting bracket 5 is welded to the planar region.

[0068] Specifically, such as Figure 3 and Figure 6 As shown, at least a portion of the intermediate boss plate 41 is constructed as a planar area to provide a flat welding plane for the mounting bracket 5, so that at least a portion of the mounting bracket 5 can be completely welded to the planar area, avoiding structural abrupt changes that could cause weld discontinuities, stress concentration, and affect the strength and rigidity of the mounting bracket 5.

[0069] In practical design, such as Figure 4As shown in the figure, the arrow points to the main force direction of the upper rear control arm, which causes the connection between the mounting boss 4 and the rear crossbeam 2 of the frame to be under greater stress. This will lead to stress concentration at the end of the second welded part 62 at this location. In order to improve the stress concentration problem, the area of ​​the connecting flange 42 at the end of the second welded part 62 can be increased to open the stress relief hole 43 on the connecting flange 42. This can avoid the stress concentration at the end of the second welded part 62. At the same time, the stress relief hole 43 can also solve the problem of electrophoretic rust prevention, that is, ensure that the electrophoretic coating can fully exert its rust prevention function and effectively protect the mounting boss 4 from corrosion.

[0070] In actual design, the stress relief hole 43 can be set to other shapes such as circle, ellipse, square, etc., and can be flexibly set according to actual needs, not limited to the one described in this embodiment.

[0071] In some embodiments, there are two frame longitudinal beams 1, which are respectively connected to the rear crossbeam 2 of the frame, and the outer side of each frame longitudinal beam 1 is connected to the rear crossbeam 2 of the frame through the longitudinal and transverse beam reinforcing plates 3.

[0072] Specifically, such as Figure 1 As shown, there are two frame longitudinal beams 1, one of which is located on the left side of the vehicle and the other on the right side. The rear ends of the two frame longitudinal beams 1 are connected to the left and right ends of the rear crossbeam 2 of the frame, respectively. The outer side of each frame longitudinal beam 1 is connected to the rear crossbeam 2 of the frame through the longitudinal and transverse beam reinforcing plates 3, thereby reinforcing the connection between the left frame longitudinal beam 1 and the rear crossbeam 2 of the frame, as well as the connection between the right frame longitudinal beam 1 and the rear crossbeam 2 of the frame, so that both frame longitudinal beams 1 can effectively resist external impact forces.

[0073] Furthermore, each longitudinal beam 1 of the frame is provided with a mounting boss 4 and a mounting bracket 5 for the corresponding longitudinal and transverse beam reinforcing plate 3.

[0074] Specifically, such as Figure 1 As shown, the longitudinal and transverse beam reinforcing plates 3 on the left side of the frame longitudinal beam 1 are equipped with mounting bosses 4 and mounting brackets 5, and the longitudinal and transverse beam reinforcing plates 3 on the right side of the frame longitudinal beam 1 are equipped with mounting bosses 4 and mounting brackets 5. This effectively strengthens the mounting brackets 5 on the left and right sides, improving the rigidity and strength of the mounting brackets 5 on both sides, thus meeting the requirements of the whole vehicle.

[0075] This utility model also proposes a vehicle.

[0076] The vehicle according to the present invention includes the subframe 100 of any of the above embodiments.

[0077] According to the embodiments of the present invention, by setting the subframe 100 described above, the vehicle's resistance to deformation can be improved, thereby enhancing the vehicle's safety and stability.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A subframe characterized by, include: The frame includes a longitudinal beam (1), a rear crossbeam (2), and longitudinal and transverse beam reinforcing plates (3). The end of the rear crossbeam (2) is connected to the end of the longitudinal beam (1), and the longitudinal and transverse beam reinforcing plates (3) are connected to the longitudinal beam (1) and the rear crossbeam (2) respectively. Mounting boss (4), which is connected to the longitudinal beam (1) of the frame, the rear crossbeam (2) of the frame and the reinforcing plate (3) of the longitudinal and crossbeams respectively; Mounting bracket (5) is connected to the mounting boss (4).

2. The subframe of claim 1, wherein The mounting boss (4) is welded and fixed above the longitudinal beam (1) of the vehicle frame, the rear crossbeam (2) of the vehicle frame, and the longitudinal and transverse beam reinforcing plates (3), and the mounting bracket (5) is welded and fixed above the mounting boss (4).

3. The subframe according to claim 2, characterized in that, A first weld (61) is formed between the mounting boss (4) and the longitudinal beam (1) of the frame; a second weld (62) is formed between the mounting boss (4) and the rear crossbeam (2) of the frame; and a third weld (63) is formed between the mounting boss (4) and the longitudinal and transverse beam reinforcing plate (3). The first welding part (61), the second welding part (62) and the third welding part (63) are all spaced apart.

4. The subframe according to claim 3, characterized in that, A fourth welded part (64) is formed between the mounting boss (4) and the mounting bracket (5); The second welded part (62), the third welded part (63) and / or the fourth welded part (64) have a bent and extended welded extension part (65) at their ends. The length of the welded extension part (65) is not less than L and satisfies: 4.5mm≤L≤5.5mm.

5. The subframe according to claim 3, characterized in that, The first welding part (61) and the second welding part (62) are spaced apart and have a welding clearance notch (66). The width of the welding clearance notch (66) is not less than D and satisfies: 7.5mm≤D≤8.5mm.

6. The subframe according to claim 1, characterized in that, The mounting boss (4) includes a central boss plate (41) and a connecting flange (42), the connecting flange (42) being arranged around the central boss plate (41); The connecting flange (42) is connected to the longitudinal beam (1), the rear crossbeam (2), and the longitudinal and transverse beam reinforcing plates (3) of the frame, respectively, and the mounting bracket (5) is connected to the intermediate boss plate (41).

7. The subframe according to claim 6, characterized in that, The connecting flange (42) is bent relative to the intermediate boss plate (41), and the frame longitudinal beam (1), the frame rear crossbeam (2) and the longitudinal and transverse beam reinforcing plates (3) are all spaced apart from the intermediate boss plate (41) so as to define the central reinforcing cavity (7) together with the connecting flange (42).

8. The subframe according to claim 6, characterized in that, At least a portion of the intermediate boss plate (41) is constructed as a planar region, and at least a portion of the mounting bracket (5) is welded to the planar region.

9. The subframe according to claim 1, characterized in that, There are two longitudinal beams (1) of the frame. The two longitudinal beams (1) are respectively connected to the rear crossbeam (2) of the frame. The outer side of each longitudinal beam (1) is connected to the rear crossbeam (2) of the frame through the longitudinal and crossbeam reinforcing plate (3). Each of the longitudinal beams (1) of the vehicle frame is provided with the mounting boss (4) and the mounting bracket (5) on the longitudinal and transverse beam reinforcing plate (3).

10. A vehicle, characterized in that, Includes the subframe as described in any one of claims 1-9.

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