Subframe and vehicle

Abstract

The utility model discloses a kind of auxiliary frame and vehicle, auxiliary frame includes: front beam and rear beam, the rear beam is located the rear of the front beam, and is spaced apart with the front beam;Two longitudinal beams, two the longitudinal beam is spaced apart distribution along vehicle transverse, and the two ends of each longitudinal beam are connected with the front beam and the rear beam respectively;Two spring arm structures, each spring arm structure includes fixedly connected main body mounting portion and stiffened beam portion, the main body mounting portion is used to install spring arm, two the main body mounting portion is respectively one-to-one correspondingly connected in two longitudinal beams, and two the stiffened beam portion is structured as extending towards each other to be connected in the rear beam.The auxiliary frame of the utility model improves the structural strength, rigidity and fatigue performance of two main body mounting portions, so that two spring arm structures are more reliable, stable, so as to improve the installation stability and reliability of spring arm.

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 some vehicles, the subframe design places the spring arm mounting brackets far from the front and rear crossbeams and also far from the longitudinal beams. This makes it difficult to connect the spring arm mounting brackets to the front and rear crossbeams. Furthermore, due to the layout of the exhaust and electric axle, it is not easy to set up crossbeams to connect the left and right spring arm mounting brackets. As a result, the stiffness, strength, and fatigue performance of the spring arm mounting brackets are poor and cannot meet the requirements of the whole vehicle.

[0003] In related technologies, the rigidity and strength of the spring arm mounting brackets are improved by setting an overall reinforcing beam to strengthen both spring arm mounting brackets. However, the overall reinforcing beam has a poor strengthening effect on the spring arm mounting brackets, and when the reinforcing beam fails, it can easily affect the two spring arm mounting brackets. Utility Model Content

[0004] 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 improves the structural strength, rigidity, and fatigue performance of the two main mounting parts, making the two spring arm structures more reliable and stable, thereby improving the installation stability and reliability of the spring arms, and enhancing the load-bearing capacity and deformation resistance of the subframe.

[0005] According to an embodiment of the present invention, the subframe includes: a front crossbeam and a rear crossbeam, the rear crossbeam being located behind the front crossbeam and spaced apart from it; two longitudinal beams, the two longitudinal beams being spaced apart along the transverse direction of the vehicle, and each longitudinal beam having its two ends connected to the front crossbeam and the rear crossbeam respectively; and two spring arm structures, each spring arm structure including a fixedly connected main mounting part and a reinforcing beam part, the main mounting part being used to mount the spring arm, the two main mounting parts being connected to the two longitudinal beams respectively, and the two reinforcing beam parts being configured to extend toward each other to connect to the rear crossbeam.

[0006] According to the subframe of this utility model embodiment, two spring arm structures are provided. Each spring arm structure includes a main mounting part and a reinforcing beam part that are fixedly connected. By connecting the two reinforcing beam parts to the crossbeam, the two main mounting parts used for mounting the spring arms are reinforced respectively, thereby improving the structural strength, rigidity and fatigue performance of the two main mounting parts. This makes the two spring arm structures more reliable and stable, thereby strengthening the mounting point of the spring arms, improving the installation stability and reliability of the spring arms, and improving the load-bearing capacity and deformation resistance of the subframe. Furthermore, the reinforcing beam parts of the two spring arm structures are constructed to extend towards each other to connect to the rear crossbeam, ensuring the feasibility of installing the electric axle and exhaust system.

[0007] According to some embodiments of the present invention, the subframe further includes an intermediate connecting plate, the reinforcing beams of the two spring arm structures are connected to the intermediate connecting plate, and the intermediate connecting plate is connected to the rear crossbeam.

[0008] According to some embodiments of the present invention, the subframe of the intermediate connecting plate is provided with two clearance recesses, and at least a portion of the reinforcing beams of the two spring arm structures extends into the two clearance recesses respectively and is fitted and connected to the inner wall of the clearance recesses.

[0009] According to some embodiments of the present invention, in the subframe, at least a portion of the reinforcing beam and the intermediate connecting plate are connected to the front side of the rear crossbeam; and / or, at least another portion of the reinforcing beam is connected to the bottom surface of the rear crossbeam.

[0010] According to some embodiments of the present invention, in the subframe, the bottom of the rear crossbeam has a downwardly protruding connecting boss, and the reinforcing beam and / or the intermediate connecting plate are connected to the connecting boss.

[0011] According to some embodiments of the present invention, each of the spring arm structures includes a first plate and a second plate, which are fastened together to form the main mounting part and the reinforcing beam part.

[0012] According to some embodiments of the present invention, in the subframe, the first plate and the second plate are fastened together in the front-rear direction; and / or, an internal weight-reducing cavity is formed between the first plate and the second plate.

[0013] According to some embodiments of the present invention, in the subframe, the main mounting part and the reinforcing beam part of each spring arm structure are integrally formed.

[0014] According to some embodiments of the present invention, the subframe further includes a reinforcing member, which is connected to the rear crossbeam, the spring arm structure and the longitudinal beam respectively, and the reinforcing member is connected to the lower side of the longitudinal beam.

[0015] This utility model also proposes a vehicle.

[0016] The vehicle according to the present invention includes the subframe described in any of the above embodiments.

[0017] The vehicle and the aforementioned subframe have the same advantages over the prior art, which will not be repeated here.

[0018] 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

[0019] 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:

[0020] Figure 1 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 2 ;

[0022] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0023] Figure 4 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 3 ;

[0024] Figure 5 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 4 ;

[0025] Figure 6 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 5 ;

[0026] Figure 7 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 6 ;

[0027] Figure 8 This is a partial structural schematic diagram of the subframe according to an embodiment of the present utility model;

[0028] Figure 9 This is a cross-sectional view of the spring arm structure according to an embodiment of the present utility model;

[0029] Figure 10This is a schematic diagram of the spring arm structure according to an embodiment of the present utility model. Figure 1 ;

[0030] Figure 11 This is a schematic diagram of the spring arm structure according to an embodiment of the present utility model. Figure 2 ;

[0031] Figure 12 This is a schematic diagram of the structure of the reinforcing member according to an embodiment of the present utility model. Figure 1 ;

[0032] Figure 13 This is a schematic diagram of the structure of the reinforcing member according to an embodiment of the present utility model. Figure 2 .

[0033] Figure label:

[0034] Subframe 100,

[0035] Front crossbeam 1, rear crossbeam 2, connecting boss 21, longitudinal beam 3,

[0036] The spring arm structure 4, the main mounting part 41, the reinforcing beam part 42, the first plate 43, the second plate 44, and the internal weight-reducing cavity 45 are all included.

[0037] Intermediate connecting plate 5, clearance notch 51, reinforcing member 6, first reinforcing plate 61, second reinforcing plate 62, triangular cavity structure 7. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] The following is for reference. Figures 1-13 The description of the subframe 100 according to the embodiment of the present utility model improves the structural strength, rigidity and fatigue performance of the two main mounting parts 41, making the two spring arm structures 4 more reliable and stable, thereby improving the installation stability and reliability of the spring arms, and improving the load-bearing capacity and deformation resistance of the subframe 100.

[0043] like Figures 1-13 As shown, a subframe 100 according to an embodiment of the present invention includes: a front crossbeam 1, a rear crossbeam 2, two longitudinal beams 3 and two spring arm structures 4.

[0044] 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 at the front of the vehicle or a rear subframe. The following description takes the subframe 100 as a rear subframe as an example. The rear subframe is located at the rear of the vehicle and is an important part of the rear axle. The rear subframe 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.

[0045] The subframe 100 includes a front crossbeam 1 and a rear crossbeam 2. The rear crossbeam 2 is located behind the front crossbeam 1 and is spaced apart from the front crossbeam 1. That is, the front crossbeam 1 and the rear crossbeam 2 are distributed at a certain distance along the front-rear direction of the vehicle to form lateral support for the subframe, ensuring the structural stability of the subframe and providing sufficient space for the installation of other structural components.

[0046] The subframe 100 also includes two longitudinal beams 3, which are spaced apart laterally along the vehicle, i.e., spaced a certain distance apart along the left-right direction of the vehicle, to form longitudinal support for the subframe 100. Each longitudinal beam 3 is connected at both ends to the front crossbeam 1 and the rear crossbeam 2, respectively. Figure 1 As shown, the front end of each longitudinal beam 3 is connected to the front crossbeam 1, and the rear end of each longitudinal beam 3 is connected to the rear crossbeam 2. Thus, the front crossbeam 1, the rear crossbeam 2, and the two longitudinal beams 3 together form an overall frame structure to provide more stable support for the subframe 100 as a whole.

[0047] Furthermore, the subframe 100 also includes two spring arm structures 4. Each spring arm structure 4 includes a main mounting part 41 and a reinforcing beam part 42 fixedly connected together. The main mounting part 41 is used to install the spring arm. The two main mounting parts 41 are respectively connected to two longitudinal beams 3. That is, the main mounting parts 41 of the two spring arm structures 4 are respectively connected to the two longitudinal beams 3 one-to-one, so that a main mounting part 41 can be fixedly installed on each of the left and right longitudinal beams 3, thereby fixing the main mounting parts 41 on the longitudinal beams 3 and thus fixing the spring arm. The reinforcing beam part 42 is used to strengthen the main mounting parts 41 to improve the structural strength, rigidity and fatigue performance of the two main mounting parts 41, thereby strengthening the mounting point of the spring arm. This can improve the installation stability and reliability of the spring arm, as well as the load-bearing capacity and deformation resistance of the subframe 100, thereby providing a good shock absorption effect for the vehicle, improving ride comfort, and ensuring the stability and safety of the vehicle during driving.

[0048] Furthermore, both reinforcing beams 42 extend laterally inward along the vehicle to connect to the rear crossbeam 2. That is, the reinforcing beams 42 of the two spring arm structures 4 are designed to extend towards each other. This brings the two reinforcing beams 42 close to the rear crossbeam 2, allowing them to connect smoothly and stably to the rear crossbeam 2. This improves the installation strength and rigidity of the two reinforcing beams 42, preventing deformation during vehicle operation that could affect the main mounting part 41. It further enhances the installation strength, rigidity, and fatigue performance of the main mounting part 41, thereby improving the overall rigidity of the subframe 100 and making the vehicle more stable during operation. Simultaneously, because the two reinforcing beams 42 extend towards each other to connect to the rear crossbeam 2, clearance space is formed at the front and bottom of the reinforcing beams 42, allowing for the avoidance of the electric axle and exhaust system, ensuring the feasibility of installing the electric axle and exhaust system.

[0049] It should be noted that the subframe 100 of this application can be applied to the suspension system of any vehicle, and can also be adapted to a five-link suspension. In the prior art, the overall reinforcing beam is set to strengthen the two spring arm mounting brackets at the same time, but the strengthening effect on the spring arm mounting brackets is poor. When the reinforcing beam fails, it is easy to affect the two spring arm mounting brackets. In this application, the reinforcing beam part 42 of the two spring arm structures 4 respectively strengthens their respective main mounting parts 41, improving the strengthening effect on the main mounting parts 41, making the two spring arm structures 4 more reliable and stable. When one spring arm structure 4 fails, the other spring arm structure 4 can still function.

[0050] And such as Figure 5 As shown, viewed from directly in front of the rear of the vehicle, the rear crossbeam 2, the spring arm structure 4, and the longitudinal beam 3 together form a triangular cavity structure 7. This structure reinforces the rear crossbeam 2, spring arm structure 4, and longitudinal beam 3, further enhancing the structural stability and reliability of the spring arm structure 4, helping it resist deformation in the front-rear direction and avoiding any impact on the spring arm. Figure 2 As shown, viewed from directly below and above the vehicle, the rear crossbeam 2, spring arm structure 4, and longitudinal beam 3 together form a triangular cavity structure 7, which enhances the ability of the spring arm structure 4 to resist vertical deformation. Therefore, the two spring arm structures 4 can each resist impacts and deformations in the front-rear and vertical directions, making their installation more stable.

[0051] According to the embodiment of this utility model, the subframe 100 is provided with two spring arm structures 4. Each spring arm structure 4 includes a main body mounting part 41 and a reinforcing beam part 42 fixedly connected. By connecting the two reinforcing beam parts 42 to the crossbeam, the two main body mounting parts 41 used for mounting the spring arm are reinforced respectively, thereby improving the structural strength, rigidity and fatigue performance of the two main body mounting parts 41. This makes the two spring arm structures 4 more reliable and stable, thereby strengthening the mounting point of the spring arm, improving the installation stability and reliability of the spring arm, and improving the load-bearing capacity and deformation resistance of the subframe 100. Furthermore, the reinforcing beam parts 42 of the two spring arm structures 4 are constructed to extend towards each other to connect to the rear crossbeam 2, ensuring the feasibility of installing the electric axle and exhaust system.

[0052] In some embodiments, the subframe 100 further includes an intermediate connecting plate 5, the reinforcing beams 42 of the two spring arm structures 4 are connected to the intermediate connecting plate 5, and the intermediate connecting plate 5 is connected to the rear crossbeam 2.

[0053] Specifically, such as Figures 1-3As shown, the subframe 100 also includes an intermediate connecting plate 5. The left spring arm structure 4 is connected to the left end of the intermediate connecting plate 5, and the reinforcing beam 42 of the right spring arm structure 4 is connected to the right end of the intermediate connecting plate 5. Thus, the reinforcing beam 42 of both spring arm structures 4 are connected to the intermediate connecting plate 5, making the two spring arm structures 4 and the intermediate connecting plate 5 a whole structure that can reinforce each other, further improving the structural strength, stiffness and fatigue performance of the two spring arm structures 4.

[0054] The intermediate connecting plate 5 is connected to the rear crossbeam 2, thus connecting the two spring arm structures 4, the intermediate connecting plate 5, and the rear crossbeam 2 into a single structure. This enhances the overall integrity of the structure. When subjected to external forces, the various structural components can work together to resist deformation and damage, improving the deformation resistance of the subframe 100. It also further enhances the structural strength, stiffness, and fatigue performance of the two spring arm structures 4, allowing for more stable installation of the spring arms. Furthermore, it increases the force transmission path. When the two spring arm structures 4 are subjected to external impact, a portion of the impact force on the spring arm structures 4 can be directly transmitted to the rear crossbeam 2 through the reinforcing beam 42, while another portion of the impact force on the spring arm structures 4 can be transmitted to the intermediate connecting plate 5 through the reinforcing beam 42, and then to the rear crossbeam 2 through the intermediate connecting plate 5. This significantly reduces the impact force borne by the spring arm structures 4, thereby improving the load-bearing capacity and stability of the entire subframe 100.

[0055] In some embodiments, the intermediate connecting plate 5 is provided with two clearance recesses 51, and at least a portion of the reinforcing beam portion 42 of the two spring arm structures 4 extends into the two clearance recesses 51 respectively and is fitted and connected to the inner wall of the clearance recesses 51.

[0056] Specifically, such as Figure 3 As shown, the intermediate connecting plate 5 is provided with two clearance recesses 51. The two clearance recesses 51 are located at the left and right ends of the intermediate connecting plate 5, respectively. The clearance recesses 51 are adapted to the structure and shape of the reinforcing beam 42. Thus, at least a portion of the inner end of the reinforcing beam 42 of the left spring arm structure 4 can extend into the clearance recess 51 at the left end to fit and connect with the inner wall of the clearance recess 51. At least a portion of the inner end of the reinforcing beam 42 of the right spring arm structure 4 can extend into the clearance recess 51 at the right end to fit and connect with the inner wall of the clearance recess 51. This achieves a reliable connection between the two spring arm structures 4 and the intermediate connecting plate 5.

[0057] By setting the avoidance notch 51 to connect with the reinforcing beam 42, the connection area between the intermediate connecting plate 5 and the reinforcing beam 42 of the two spring arm structures 4 can be increased, making the connection strength and rigidity between the intermediate connecting plate 5 and the reinforcing beam 42 of the two spring arm structures 4 higher and less prone to breakage.

[0058] In some embodiments, at least a portion of the reinforcing beam 42 and the intermediate connecting plate 5 are connected to the front side of the rear crossbeam 2.

[0059] Specifically, such as Figure 3 and Figure 9 As shown, the front part of the reinforcing beam 42 is connected to the front side of the rear crossbeam 2. Thus, the reinforcing beam 42 is connected to both the rear crossbeam 2 and the intermediate connecting plate 5, greatly improving the connection strength and rigidity of the two reinforcing beams 42. This better strengthens the two main mounting parts 41 and reduces the risk of breakage. And as... Figure 3 As shown, the intermediate connecting plate 5 is connected to the front side of the rear crossbeam 2, which enhances the connection strength and rigidity of the intermediate connecting plate 5. The rear crossbeam 2 can also support the intermediate connecting plate 5, so that the intermediate connecting plate 5 can be more reliably connected to the two reinforcing beams 42, preventing the intermediate connecting plate 5 from undergoing severe deformation and causing connection failure when subjected to external force.

[0060] In other embodiments, at least another portion of the reinforcing beam 42 is connected to the bottom surface of the rear crossbeam 2.

[0061] Specifically, such as Figure 7 As shown, the rear part of the reinforcing beam 42 is connected to the bottom surface of the rear crossbeam 2, which further increases the connection area between the reinforcing beam 42 and the rear crossbeam 2, thereby further improving the connection strength and rigidity between the reinforcing beam 42 and the rear crossbeam 2.

[0062] like Figure 5 As shown, the extension direction of the reinforcing beam 42 is collinear or nearly collinear with the line connecting the inner and outer points of the spring arm (the direction of force). This makes the reinforcing effect of the reinforcing beam 42 more direct and effective. The reinforcing beam 42 can be constructed as a hydraulic pipe beam or a stamped and welded beam, etc. Main and auxiliary positioning holes and electrophoresis process holes can also be provided on the reinforcing beam 42 to achieve accurate installation of the reinforcing beam 42 and improve its service life. The reinforcing beam 42 is easy to form, has a simple structure, and low manufacturing cost.

[0063] In actual design, the shape of the reinforcing beam 42 can be set as a rectangular tube beam, a cylindrical tube beam, or a tube beam structure of other shapes. It can be flexibly set according to actual needs and is not limited to the one described in this embodiment.

[0064] In some embodiments, a downwardly protruding connecting boss 21 is formed at the bottom of the rear crossbeam 2, and the reinforcing beam portion 42 and / or the intermediate connecting plate 5 are connected to the connecting boss 21.

[0065] In other words, the reinforcing beam 42 can be connected to the connecting boss 21, that is, the connecting boss 21 is used to connect the reinforcing beam 42; or, the intermediate connecting plate 5 can be connected to the connecting boss 21, that is, the connecting boss 21 is used to connect the intermediate reinforcing plate; or, the reinforcing beam 42 and the intermediate connecting plate 5 can be connected to the connecting boss 21 at the same time, that is, the connecting boss 21 is used to connect the reinforcing beam 42 and the intermediate connecting plate 5.

[0066] Specifically, such as Figure 1 , Figure 3 , Figure 5 and Figure 7 As shown, a downwardly protruding connecting boss 21 is formed at the bottom of the rear crossbeam 2, and the connecting boss 21 extends to contact the reinforcing beam 42 for connection. The intermediate connecting plate 5 is also connected to the connecting boss 21. Thus, by setting the connecting boss 21, the reinforcing beam 42 and the intermediate connecting plate 5 can be connected to the rear crossbeam 2 together, ensuring a stable and reliable connection between the reinforcing beam 21 and the intermediate connecting plate 5 and the rear crossbeam 2.

[0067] And such as Figure 3 As shown, the connecting boss 21 also protrudes forward, which not only facilitates the connection with the reinforcing beam 21 and the intermediate connecting plate 5, but also improves the structural strength and rigidity of the connecting boss 21, making it less likely to break at the connection between the connecting boss 21 and the intermediate connecting plate 5.

[0068] In some embodiments, each spring arm structure 4 includes a first plate 43 and a second plate 44, which are fastened together to form the main body mounting portion 41 and the reinforcing beam portion 42.

[0069] Specifically, such as Figure 8 As shown, each spring arm structure 4 includes a first plate 43 and a second plate 44. The shapes and sizes of the first plate 43 and the second plate 44 are adapted to each other so that the first plate 43 can be fastened to the second plate 44 to form an integral spring arm structure 4 including the main mounting part 41 and the reinforcing beam part 42. As a result, the overall structural strength of the spring arm structure 4 is higher and it is not easy to undergo torsional deformation, thereby improving the torsional stiffness of the subframe 100.

[0070] In practical design, the first plate 43 can be fastened to the second plate 44, or the second plate 44 can be fastened to the first plate 43. This can be flexibly configured according to actual needs and is not limited to the embodiments described herein. After the first plate 43 and the second plate 44 are fastened together, welding can be performed at the connection point to further enhance the connection strength between the first plate 43 and the second plate 44, making the connection between the first plate 43 and the second plate 44 more stable and reliable.

[0071] In some embodiments, the first plate 43 and the second plate 44 are fastened together in the front-back direction.

[0072] Specifically, such as Figure 8 As shown, the first plate 43 is located on the rear side and the second plate 44 is located on the front side. The first plate 43 and the second plate 44 are fastened together along the front-rear direction of the vehicle to improve the torsional deformation resistance of the spring arm structure 4.

[0073] Of course, during actual installation, the first plate 43 and the second plate 44 can be fastened together in the vertical direction to achieve the fastening and fixing of the two parts. Alternatively, they can be fastened together at other angles or directions, and the setting method is flexible and selectable.

[0074] In some embodiments, an internal weight-reducing cavity 45 is formed between the first plate 43 and the second plate 44.

[0075] Specifically, such as Figure 9 As shown, both the first plate 43 and the second plate 44 are constructed as groove-shaped structures. In this way, after the first plate 43 and the second plate 44 are fastened together, an internal weight-reducing cavity 45 can be formed between the first plate 43 and the second plate 44, so that the inside of the spring arm structure 4 is hollow, thereby reducing the weight of the spring arm structure 4 and facilitating the lightweighting of the subframe 100. In addition, the internal weight-reducing cavity 45 can also absorb vibration and impact energy to reduce the transmission of impact force to other structures.

[0076] In some embodiments, the main mounting portion 41 and the reinforcing beam portion 42 of each spring arm structure 4 are integrally formed.

[0077] In other words, the main mounting part 41 and the reinforcing beam part 42 are manufactured as a single unit, making the main mounting part 41 and the reinforcing beam part 42 a continuous integral structure. This enhances the structural strength and stability of the spring arm structure 4, and is also convenient to manufacture, improves production efficiency, and simplifies the assembly process.

[0078] In some embodiments, the subframe 100 further includes a reinforcing member 6, which is connected to the rear crossbeam 2, the spring arm structure 4 and the longitudinal beam 3 respectively, and the reinforcing member 6 is connected to the lower side of the longitudinal beam 3.

[0079] Specifically, such as Figure 7As shown, the subframe 100 also includes a reinforcing member 6, which is connected to the rear crossbeam 2, the spring arm structure 4, and the longitudinal beam 3 respectively. This provides additional support and reinforcement to the subframe 100 at multiple key locations, further enhancing the structural strength of the rear crossbeam 2, the spring arm structure 4, and the longitudinal beam 3, thereby further enhancing the overall structural strength of the subframe 100. The reinforcing member 6 also enables the effective connection between the spring arm structure 4 and the rear crossbeam 2, further enhancing the strength, stiffness, and fatigue performance of the spring arm structure 4 and preventing severe deformation of the spring arm structure 4.

[0080] Among them, such as Figure 7 As shown, the reinforcing member 6 is connected to the lower side of the longitudinal beam 3 to accommodate the installation position of the spring arm structure 4 on the longitudinal beam 3, so that the reinforcing member 6 can be connected to the rear crossbeam 2, the spring arm structure 4 and the longitudinal beam 3 respectively, and also helps the subframe 100 resist the impact force from the bottom of the vehicle.

[0081] The reinforcing member 6 is connected to the lower side of the longitudinal beam 3. The triangular cavity structure 7, which is formed by the rear crossbeam 2, the spring arm structure 4, the reinforcing beam and the longitudinal beam 3, is also reinforced to further improve the stability of the triangular cavity structure 7. This makes the structure of the rear crossbeam 2, the spring arm structure 4, the reinforcing beam and the longitudinal beam 3 more stable, and the mutual reinforcement effect is stronger, which is conducive to better resisting deformation.

[0082] In other embodiments, such as Figure 12 and Figure 13 As shown, the reinforcing member 6 includes a first reinforcing plate 61 and two second reinforcing plates 62. The two second reinforcing plates 62 can be connected to both sides of the first reinforcing plate 61 respectively, so that the reinforcing member 6 is constructed as a groove-shaped part that is open upward, and can form a "U" shaped groove, a square groove, an irregular groove, etc. In this way, the reinforcing member 6 can provide sufficient rigidity and strength, which can greatly improve the rigidity and fatigue performance of the spring arm structure 4, and also reduce its weight, which is conducive to the lightweighting of the vehicle.

[0083] In addition, since the reinforcing member 6 is constructed as a groove, after the reinforcing member 6 is connected with the rear crossbeam 2, the spring arm structure 4 and the longitudinal beam 3, a hollow cavity structure can be formed at the reinforcing member 6, which can effectively absorb and disperse the impact force from the bottom of the vehicle.

[0084] In actual design, the reinforcing part 6 can be integrally stamped, which is convenient and low in manufacturing cost. It can be equipped with positioning holes and weight reduction holes. The weight reduction holes can reduce the weight of the reinforcing part 6, thereby helping to reduce the overall weight of the vehicle and achieve vehicle lightweighting.

[0085] This utility model also proposes a vehicle.

[0086] The vehicle according to the present invention includes the subframe 100 of any of the above embodiments.

[0087] The vehicle in this embodiment of the utility model can be a hybrid vehicle, a pure electric vehicle, a fuel vehicle, etc.

[0088] According to the vehicle of this utility model embodiment, two spring arm structures 4 are provided. Each spring arm structure 4 includes a main body mounting part 41 and a reinforcing beam part 42 fixedly connected. By connecting the two reinforcing beam parts 42 to the crossbeam, the two main body mounting parts 41 used for mounting the spring arm are reinforced respectively, thereby improving the structural strength, rigidity and fatigue performance of the two main body mounting parts 41. This makes the two spring arm structures 4 more reliable and stable, thereby strengthening the mounting point of the spring arm, improving the installation stability and reliability of the spring arm, and improving the load-bearing capacity and deformation resistance of the subframe. Furthermore, the reinforcing beam parts 42 of the two spring arm structures 4 are constructed to extend towards each other to connect to the rear crossbeam 2, ensuring the feasibility of installing the electric axle and exhaust system.

[0089] 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.

[0090] 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 in that, include: A front crossbeam (1) and a rear crossbeam (2), wherein the rear crossbeam (2) is located behind the front crossbeam (1) and spaced apart from the front crossbeam (1); Two longitudinal beams (3) are distributed laterally across the vehicle, and the two ends of each longitudinal beam (3) are connected to the front crossbeam (1) and the rear crossbeam (2) respectively. Two spring arm structures (4), each of the spring arm structures (4) includes a main body mounting part (41) and a reinforcing beam part (42) fixedly connected. The main body mounting part (41) is used to mount the spring arm. The two main body mounting parts (41) are respectively connected to the two longitudinal beams (3) in a one-to-one correspondence. The two reinforcing beam parts (42) are configured to extend toward each other to connect to the rear crossbeam (2).

2. The subframe according to claim 1, characterized in that, It also includes an intermediate connecting plate (5), the reinforcing beams (42) of the two spring arm structures (4) are connected to the intermediate connecting plate (5), and the intermediate connecting plate (5) is connected to the rear crossbeam (2).

3. The subframe according to claim 2, characterized in that, The intermediate connecting plate (5) is provided with two clearance recesses (51). At least a portion of the reinforcing beam (42) of the two spring arm structures (4) extends into the two clearance recesses (51) respectively and is fitted and connected to the inner wall of the clearance recesses (51).

4. The subframe according to claim 2, characterized in that, At least a portion of the reinforcing beam (42) and the intermediate connecting plate (5) are connected to the front side of the rear crossbeam (2); And / or, at least another portion of the reinforcing beam (42) is connected to the bottom surface of the rear crossbeam (2).

5. The subframe according to claim 2, characterized in that, The bottom of the rear crossbeam (2) has a downwardly protruding connecting boss (21), and the reinforcing beam (42) and / or the intermediate connecting plate (5) are connected to the connecting boss (21).

6. The subframe according to claim 1, characterized in that, Each of the spring arm structures (4) includes a first plate (43) and a second plate (44), which are fastened together to form the main body mounting part (41) and the reinforcing beam part (42).

7. The subframe according to claim 6, characterized in that, The first plate (43) and the second plate (44) are fastened together in the front-to-back direction; And / or, an internal weight-reducing cavity (45) is formed between the first plate (43) and the second plate (44).

8. The subframe according to claim 1, characterized in that, The main mounting part (41) and the reinforcing beam part (42) of each spring arm structure (4) are integrally formed.

9. The subframe according to claim 1, characterized in that, It also includes a reinforcing member (6), which is connected to the rear crossbeam (2), the spring arm structure (4) and the longitudinal beam (3) respectively, and the reinforcing member (6) is connected to the lower side of the longitudinal beam (3).

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

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