Subframe and vehicle

Abstract

The utility model discloses a kind of auxiliary frame and vehicle, auxiliary frame includes: front beam and rear beam, rear beam is located at the rear of front beam, and is spaced apart with front beam;Two longitudinal beams are spaced apart along vehicle transverse distribution, and the two ends of each longitudinal beam are connected with front beam and rear beam respectively, each longitudinal beam is equipped with a spring arm mounting bracket;Stiffened beam assembly includes intermediate connecting plate and two stiffened beams, intermediate connecting plate is fixedly connected between two stiffened beams, two stiffened beams are connected with the spring arm mounting bracket corresponding to two longitudinal beams respectively, stiffened beam structure is inclined to the rear along the direction close to intermediate connecting plate, and intermediate connecting plate is connected with rear beam.The auxiliary frame of the utility model improves the connection strength and stiffness and fatigue performance of two stiffened beams and intermediate connecting plate, so that the structure of two stiffened beams is more stable, reliable, further improves the installation strength, stiffness and fatigue performance of spring arm mounting bracket, improves the torsional stiffness and strength of 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 some vehicles, the subframe design has the spring arm mounting bracket connected to the longitudinal beams of the subframe. However, the spring arm mounting bracket is located far from the front and rear crossbeams, making it difficult to connect to them. Furthermore, due to the influence of the exhaust and electric axle layout, the installation strength and support strength of the spring arm mounting bracket are relatively low, failing to meet the requirements of the entire vehicle.

[0003] In related technologies, although the stiffness and strength of the spring arm mounting bracket can be improved by setting a reinforcing beam, the installation stability of the reinforcing beam is poor, which leads to poor strength, stiffness and fatigue performance of the reinforcing beam, leaving room for improvement. 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 connection strength, stiffness, and fatigue performance of the two reinforcing beams and the intermediate connecting plate, making the structure of the two reinforcing beams more stable and reliable, thereby further improving the installation strength, stiffness, and fatigue performance of the spring arm mounting bracket, and improving the torsional stiffness and strength of the vehicle.

[0005] The subframe according to an embodiment of the present invention 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, each longitudinal beam having a spring arm mounting bracket; and a reinforcing beam assembly, the reinforcing beam assembly including a middle connecting plate and two reinforcing beams, the middle connecting plate being fixedly connected between the two reinforcing beams, the two reinforcing beams being respectively connected to the spring arm mounting brackets corresponding to the two longitudinal beams, the reinforcing beams being constructed to be inclined rearward along the direction close to the middle connecting plate, and the middle connecting plate being connected to the rear crossbeam.

[0006] According to the subframe of this utility model embodiment, the spring arm mounting bracket is strengthened by setting a reinforcing beam assembly including an intermediate connecting plate and two reinforcing beams, which effectively improves the installation strength, stiffness and fatigue performance of the spring arm mounting bracket. Furthermore, the two reinforcing beams are connected to the rear crossbeam by the intermediate connecting plate, which improves the connection strength, stiffness and fatigue performance between the two reinforcing beams and the intermediate connecting plate, making the structure of the two reinforcing beams more stable and reliable. This further improves the installation strength, stiffness and fatigue performance of the spring arm mounting bracket, and enhances the torsional stiffness and strength of the vehicle.

[0007] According to some embodiments of the present invention, in the subframe, the inner ends of the two reinforcing beams are configured to be fitted and connected to both ends of the intermediate connecting plate; wherein, at least a portion of the inner ends of the reinforcing beams and the intermediate connecting plate are fitted and connected to the rear crossbeam.

[0008] According to some embodiments of the present invention, the subframe includes a main body and a support plate. The support plate is bent and connected to the lower edge of the main body. The main body is attached to the front side of the rear crossbeam, and the support plate is supported on the lower side of the rear crossbeam.

[0009] According to some embodiments of the present invention, in the subframe, the inner ends of the two reinforcing beams are respectively connected to the two ends of the main body, at least a portion of the inner ends of the reinforcing beams are attached to the front side of the rear crossbeam, and at least another portion is supported on the lower side 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, in the subframe, the inner end of the spring arm mounting bracket is formed with an insertion interface, and at least a portion of the outer end of the reinforcing beam is inserted into the insertion interface.

[0012] According to some embodiments of the present invention, the subframe of the spring arm mounting bracket includes a first bracket section and a second bracket section that are bent and connected together. A spring arm mounting part is provided at the connection between the first bracket section and the second bracket section. The insertion interface is formed at the end of the first bracket section away from the second bracket section. The end of the second bracket section away from the first bracket section is connected to the longitudinal beam.

[0013] According to some embodiments of the present invention, the subframe of the spring arm mounting bracket includes a first plate and a second plate, the first plate and the second plate being fastened together, and the first plate and the second plate together defining the insertion interface.

[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 mounting bracket 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 existing technologies, 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 structure of the spring arm mounting bracket and the reinforcing beam according to an embodiment of the present utility model. Figure 1 ;

[0022] Figure 3 This is a schematic diagram of the structure of the spring arm mounting bracket and the reinforcing beam according to an embodiment of the present utility model. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the structure of the spring arm mounting bracket and reinforcing beam assembly according to an embodiment of the present utility model. Figure 1 ;

[0024] Figure 5 This is a schematic diagram of the structure of the spring arm mounting bracket and reinforcing beam assembly according to an embodiment of the present utility model. Figure 2 ;

[0025] Figure 6 This is a schematic diagram of the structure of the intermediate connecting plate according to an embodiment of the present utility model. Figure 1 ;

[0026] Figure 7 This is a schematic diagram of the structure of the intermediate connecting plate according to an embodiment of the present utility model. Figure 2 ;

[0027] Figure 8 This is a structural schematic diagram of the connecting boss and the reinforcing beam according to an embodiment of the present utility model;

[0028] Figure 9 This is a schematic diagram of the subframe structure according to an embodiment of the present utility model. Figure 2 ;

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

[0030] Figure 11 This is a schematic diagram of the structure of the reinforcing member 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 3 ;

[0032] Figure 13 This is a structural schematic diagram of the connecting boss according to an embodiment of the present utility model.

[0033] Figure label:

[0034] Subframe 100,

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

[0036] Reinforcing beam assembly 4, intermediate connecting plate 41, main body 411, supporting plate 412, reinforcing beam 42.

[0037] Spring arm mounting bracket 5, insertion interface 51, first bracket section 52, second bracket section 53, spring arm mounting part 54, first plate 55, second plate 56, 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 subframe 100 according to an embodiment of the present utility model improves the connection strength, stiffness and fatigue performance of the two reinforcing beams 42 and the intermediate connecting plate 41, making the structure of the two reinforcing beams 42 more stable and reliable, thereby improving the installation strength, stiffness and fatigue performance of the spring arm mounting bracket 5, and improving the torsional stiffness and strength of the vehicle.

[0043] like Figures 1-13 As shown, a subframe 100 according to one embodiment of the present invention includes: a front crossbeam 1, a rear crossbeam 2, two longitudinal beams 3, and a reinforcing beam assembly 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 100, ensuring the structural stability of the subframe 100 and having sufficient space to install 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 integrated frame structure to provide more stable support for the subframe 100. Each longitudinal beam 3 is equipped with a spring arm mounting bracket 5, meaning the subframe 100 has two spring arm mounting brackets 5. These two spring arm mounting brackets 5 are respectively mounted and fixed on the two longitudinal beams 3, thereby achieving fixed installation of the two spring arm mounting brackets 5. This allows the spring arm mounting brackets 5 to connect and support the spring arms, thereby realizing the vehicle's shock absorption function.

[0047] 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. Since the spring arm mounting brackets of the five-link suspension are located far from the front crossbeam, rear crossbeam and longitudinal beam, and are affected by the exhaust and electric axle layout, it is impossible to add a conventional two-point intermediate crossbeam. That is, it is impossible to set an intermediate crossbeam between the two spring arm mounting brackets to strengthen the spring arm mounting brackets, which will result in poor stiffness, strength and fatigue performance of the spring arm mounting brackets. The subframe 100 of this application can solve this problem well.

[0048] In the prior art, although the stiffness and strength of the spring arm mounting bracket can be improved by setting a reinforcing beam, the installation stability of the reinforcing beam is poor, which leads to poor strength, stiffness and fatigue performance of the reinforcing beam, and it is easy to separate from the rear crossbeam.

[0049] Furthermore, the subframe 100 also includes a reinforcing beam assembly 4, which includes an intermediate connecting plate 41 and two reinforcing beams 42. The intermediate connecting plate 41 is fixedly connected between the two reinforcing beams 42, and the two reinforcing beams 42 are respectively connected to two spring arm mounting brackets 5 in a one-to-one correspondence. The intermediate connecting plate 41 is also connected to the rear crossbeam 2.

[0050] Specifically, the reinforcing beam assembly 4 is used to reinforce the spring arm mounting brackets 5 installed on each longitudinal beam 3, thereby improving the installation strength, stiffness, and fatigue performance of the two spring arm mounting brackets 5. The reinforcing beam assembly 4 includes an intermediate connecting plate 41 and two reinforcing beams 42. The intermediate connecting plate 41 is fixedly connected between the two reinforcing beams 42; that is, one end of the intermediate connecting plate 41 is fixedly connected to one of the reinforcing beams 42, and the other end of the intermediate connecting plate 41 is fixedly connected to the other reinforcing beam 42. Thus, the two reinforcing beams 42 are connected together through the intermediate connecting plate 41, forming an integral structure that strengthens the two reinforcing beams 42, enhancing their strength, stiffness, and fatigue performance.

[0051] The two reinforcing beams 42 are respectively connected to the spring arm mounting brackets 5 corresponding to the two longitudinal beams 3. That is, the reinforcing beam 42 located on the left side of the intermediate connecting plate 41 is connected to the spring arm mounting bracket 5 of the left longitudinal beam 3, and the reinforcing beam 42 located on the right side of the intermediate connecting plate 41 is connected to the spring arm mounting bracket 5 of the right longitudinal beam 3, so as to achieve separate reinforcement of the two spring arm mounting brackets 5. By setting the intermediate connecting plate 41 to reinforce the two reinforcing beams 42, the reinforcing effect of the two reinforcing beams 42 on the two spring arm mounting brackets 5 is further improved, resulting in better strength, stiffness and fatigue performance of the spring arm mounting brackets 5.

[0052] Furthermore, the reinforcing beam 42 can be constructed to tilt rearward along the direction close to the intermediate connecting plate 41. This allows the reinforcing beam 42 to approach the intermediate connecting plate 41 connected to the rear crossbeam 2, facilitating the connection between the reinforcing beam 42 and the intermediate connecting plate 41. Thus, the intermediate connecting plate 41 achieves a reliable connection between the two reinforcing beams 42 and the rear crossbeam 2, further strengthening the reinforcing beams 42 and improving the connection stability and reliability between the two reinforcing beams 42 and the intermediate connecting plate 41. This makes the structure of the two reinforcing beams 42 more stable and reliable, preventing breakage at the connection point between the two reinforcing beams 42 and the intermediate connecting plate 41, thereby improving the installation strength, stiffness, and fatigue performance of the spring arm mounting bracket 5, and enhancing the torsional stiffness and strength of the vehicle. In addition, by constructing the reinforcing beam 42 to tilt rearward along the direction close to the intermediate connecting plate 41, clearance space is created at the front and bottom of the two 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.

[0053] Furthermore, since the two reinforcing beams 42 respectively reinforce the two spring arm mounting brackets 5, even if one of the reinforcing beams 42 separates from the intermediate connecting plate 41, i.e. when the reinforcing effect on the spring arm mounting bracket 5 fails, the other reinforcing beam 42 can still reinforce the other spring arm mounting bracket 5. Compared with the prior art where the overall reinforcing beam 42 simultaneously reinforces the two spring arm mounting brackets 5, the reliability of the reinforcing beam assembly 4 is improved.

[0054] According to the subframe 100 of this utility model embodiment, the spring arm mounting bracket 5 is strengthened by setting a reinforcing beam assembly 4 including an intermediate connecting plate 41 and two reinforcing beams 42, which effectively improves the installation strength, stiffness and fatigue performance of the spring arm mounting bracket 5. Furthermore, the two reinforcing beams 42 are connected to the rear crossbeam 2 through the intermediate connecting plate 41, which improves the connection strength, stiffness and fatigue performance between the two reinforcing beams 42 and the intermediate connecting plate 41, making the structure of the two reinforcing beams 42 more stable and reliable, thereby further improving the installation strength, stiffness and fatigue performance of the spring arm mounting bracket 5, and improving the torsional stiffness and strength of the vehicle.

[0055] In some embodiments, the inner ends of the two reinforcing beams 42 are configured to be fitted and connected to both ends of the intermediate connecting plate 41.

[0056] Specifically, such as Figure 1 and Figure 4 As shown, the left reinforcing beam 42 is attached to the left end of the intermediate connecting plate 41, and the right reinforcing beam 42 is attached to the right end of the intermediate connecting plate 41. This achieves the connection between the two reinforcing beams 42 and the intermediate connecting plate 41, allowing the two reinforcing beams 42 to reinforce each other and preventing deformation or breakage of the two reinforcing beams 42 under individual stress. Furthermore, it allows the inner ends of the two reinforcing beams 42 to be in surface-to-surface contact with both ends of the intermediate connecting plate 41, which increases the connection area between the two reinforcing beams 42 and the intermediate connecting plate 41, making the connection between the two reinforcing beams 42 and the intermediate connecting plate 41 more stable and reliable, and less prone to breakage or separation.

[0057] Furthermore, at least a portion of the inner end of the reinforcing beam 42 and the intermediate connecting plate 41 are fitted and connected to the rear crossbeam 2.

[0058] Specifically, such as Figure 1 As shown, at least the inner ends of the two reinforcing beams 42 and the intermediate connecting plate 41 are all fitted and connected to the rear crossbeam 2. That is, at least the inner ends of the reinforcing beams 42 are fitted and connected to the rear crossbeam 2 to achieve the connection between the reinforcing beams 42 and the rear crossbeam 2. This allows the reinforcing beams 42 to be connected to both the rear crossbeam 2 and the intermediate connecting plate 41, greatly improving the connection strength and rigidity of the two reinforcing beams 42. This better strengthens the two spring arm mounting brackets 5 and reduces the risk of breakage. Furthermore, the intermediate connecting plate 41 is fitted and connected to the rear crossbeam 2 to achieve the connection between the intermediate connecting plate 41 and the rear crossbeam 2, improving the connection strength and rigidity of the intermediate connecting plate 41. The rear crossbeam 2 also supports the intermediate connecting plate 41, allowing it to be more reliably connected to the two reinforcing beams 42 and preventing severe deformation of the intermediate connecting plate 41 under external force, which could lead to connection failure.

[0059] At least a portion of the inner end of the reinforcing beam 42 is fitted and connected to the rear crossbeam 2, allowing for a surface-to-surface connection between the inner end of the reinforcing beam 42 and the rear crossbeam 2. This increases the connection area between the two reinforcing beams 42 and the rear crossbeam 2, making the connection more stable and reliable, and less prone to breakage or separation. Similarly, the intermediate connecting plate 41 is fitted and connected to the rear crossbeam 2, allowing for a surface-to-surface connection between the intermediate connecting plate 41 and the rear crossbeam 2. This increases the connection area between the intermediate connecting plate 41 and the rear crossbeam 2, making the connection more stable and reliable, and less prone to breakage or separation. As a result, the structural strength, stiffness, and fatigue performance of the entire reinforcing beam assembly 4 are further improved, allowing for more stable reinforcement of the spring arm mounting bracket 5, thus enhancing the structural strength, stiffness, and fatigue performance of the spring arm mounting bracket 5.

[0060] Thus, through the close connection of the two reinforcing beams 42 with the intermediate connecting plate 41, the close connection of the two reinforcing beams 42 with the rear crossbeam 2, and the close connection of the intermediate connecting plate 41 with the rear crossbeam 2, the reinforcing beams 42, the intermediate connecting plate 41, and the rear crossbeam 2 form an integral structure, enhancing the overall integrity of the structure. They can reinforce each other, and under external force, the various structural components can jointly resist deformation and damage, improving the deformation resistance of the subframe 100. Furthermore, it adds two force transmission paths; the first transmission path is: from the reinforcing beams 42... The reinforcing beam 42 goes directly to the rear crossbeam 2. The second transmission path is from the reinforcing beam 42 to the intermediate connecting plate 41, and then from the intermediate connecting plate 41 to the rear crossbeam 2. In this way, when a vehicle collides, part of the impact force on the two reinforcing beams 42 can be directly transmitted to the rear crossbeam 2, and the other part of the impact force can be transmitted to the intermediate connecting plate 41, and then transmitted to the rear crossbeam 2 through the intermediate connecting plate 41. This greatly reduces the impact force borne by the reinforcing beam 42, thereby improving the load-bearing capacity and stability of the entire subframe 100.

[0061] Of course, in actual design, such as Figure 8 As shown, the intermediate connecting plate 41 can also be omitted, and at least part of the inner ends of the two reinforcing beams 42 can be directly connected to the rear crossbeam 2. This can be flexibly set according to actual needs.

[0062] In some embodiments, the intermediate connecting plate 41 includes a main body 411 and a support plate 412. The support plate 412 is bent and connected to the lower edge of the main body 411. The main body 411 is attached to the front side of the rear crossbeam 2, and the support plate 412 is supported on the lower side of the rear crossbeam 2.

[0063] Specifically, such as Figure 1 , Figures 5-7As shown, the intermediate connecting plate 41 includes a main body 411 and a support plate 412. The main body 411 can cover the front side of the rear crossbeam 2, and the edge of the main body 411 is attached to and welded to the front side of the rear crossbeam 2, thereby achieving the fit of the main body 411 to the front side of the rear crossbeam 2. The support plate 412 is bent and connected to the lower edge of the main body 411 to adapt to the shape of the lower side of the rear crossbeam 2, so that the support plate 412 can fit to the lower side of the rear crossbeam 2 and be welded to it, thereby achieving the support plate 412 supporting the lower side of the rear crossbeam 2, so as to effectively support the entire intermediate connecting plate 41, further improving the connection strength and rigidity between the intermediate connecting plate 41 and the rear crossbeam 2 and the two reinforcing beams 42, making the structure of the intermediate connecting plate 41 more stable.

[0064] Furthermore, by attaching the main body 411 to the front side of the rear crossbeam 2 and supporting the support plate 412 to the lower side of the rear crossbeam 2, i.e., the intermediate connecting plate 41 is connected to the rear crossbeam 2, the structural rigidity of the subframe 100 can be increased. When the vehicle is subjected to external impact, the external impact borne by the intermediate connecting plate 41 can be transmitted to the rear crossbeam 2, and further distributed to the entire subframe 100 through the rear crossbeam 2, thereby reducing the stress on the two reinforcing beams 42 and preventing the connection between the reinforcing beams 42 and the intermediate connecting plate 41 from breaking.

[0065] In some embodiments, the inner ends of the two reinforcing beams 42 are respectively connected to the two ends of the main body 411, at least a portion of the inner ends of the reinforcing beams 42 are attached to the front side of the rear crossbeam 2, and at least another portion is supported on the lower side of the rear crossbeam 2.

[0066] Specifically, such as Figure 1 and Figure 7 As shown, the inner end of the left reinforcing beam 42 is connected to the left end of the main body 411, and the inner end of the right reinforcing beam 42 is connected to the right end of the main body 411, thus the inner ends of the two reinforcing beams 42 are connected to the left and right ends of the main body 411 respectively. Figure 1 and Figure 13 As shown, the front portion of the inner end of the reinforcing beam 42 is attached to the front side of the rear crossbeam 2, and the rear portion of the inner end of the reinforcing beam 42 is attached to and supported on the lower side of the rear crossbeam 2, thereby achieving a stable connection between the reinforcing beam 42 and the rear crossbeam 2. Thus, a reliable connection is achieved between the inner end of the reinforcing beam 42 and both the rear crossbeam 2 and the main body 411.

[0067] In some embodiments, a downwardly protruding connecting boss 21 is formed at the bottom of the rear crossbeam 2, and the reinforcing beam 42 and / or intermediate connecting plate 41 are connected to the connecting boss 21.

[0068] 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 41 can be connected to the connecting boss 21, that is, the connecting boss 21 is used to connect the intermediate connecting plate 41; or, the reinforcing beam 42 and the intermediate connecting plate 41 are both connected to the connecting boss 21, that is, the connecting boss 21 is used to connect the reinforcing beam 42 and the intermediate connecting plate 41.

[0069] Specifically, such as Figure 1 , Figure 8 and Figure 13 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 41 is also connected to the connecting boss 21. Thus, by setting the connecting boss 21, the reinforcing beam 42 and the intermediate connecting plate 41 can be connected to the rear crossbeam 2 together, ensuring a stable and reliable connection between the reinforcing beam 42, the intermediate connecting plate 41 and the rear crossbeam 2.

[0070] In some embodiments, the inner end of the spring arm mounting bracket 5 is formed with a plug-in interface 51, and at least a portion of the outer end of the reinforcing beam 42 is plugged into the plug-in interface 51, that is, the spring arm mounting bracket 5 and the reinforcing beam 42 can be connected and fixed by the plugging direction.

[0071] Specifically, such as Figure 2 and Figure 3 As shown, Figure 2 and Figure 3 The inward and outward directions shown refer to the inward and outward directions of the vehicle. The inner end of the spring arm mounting bracket 5 is formed with an insertion interface 51. The insertion interface 51 matches the shape and size of at least a portion of the outer end of the reinforcing beam 42, so that at least a portion of the outer end of the reinforcing beam 42 can be inserted into the insertion interface 51 and fixedly connected to the spring arm mounting bracket 5, thereby achieving a reliable connection between the spring arm mounting bracket 5 and the reinforcing beam 42.

[0072] In actual design, the inner end of the spring arm mounting bracket 5 can be stamped and fastened to at least part of the outer end of the reinforcing beam 42, and then welded at the connection. This makes the connection between the spring arm mounting bracket 5 and the reinforcing beam 42 more secure, and the overall structure after the connection between the spring arm mounting bracket 5 and the reinforcing beam 42 has higher strength and stability, and can better resist deformation and damage.

[0073] Of course, the spring arm mounting bracket 5 and the reinforcing beam 42 can also be fixedly connected by other methods, such as snap-fit, etc. The specific connection method is not limited to this.

[0074] In some embodiments, the spring arm mounting bracket 5 includes a first bracket section 52 and a second bracket section 53 that are bent and connected. The connection between the first bracket section 52 and the second bracket section 53 is provided with an elastic arm mounting part. The end of the first bracket section 52 facing away from the second bracket section 53 forms an insertion interface 51. The end of the second bracket section 53 facing away from the first bracket section 52 is connected to the longitudinal beam 3.

[0075] Specifically, such as Figure 2 and Figure 3 As shown, the spring arm mounting bracket 5 includes a first bracket section 52 and a second bracket section 53 that are bent and connected. The first bracket section 52 extends horizontally, and the second bracket section 53 extends vertically, making the spring arm mounting bracket 5 generally L-shaped. A spring arm mounting part 54 is provided at the connection point between the first bracket section 52 and the second bracket section 53, i.e., the inflection point of the L-shape. The spring arm mounting part 54 is used to mount the spring arm. An insertion interface 51 is formed at the end of the first bracket section 52 facing away from the second bracket section 53, i.e., the end of the first bracket section 52 near the reinforcing beam 42. The reinforcing beam 42 is inserted into the insertion interface 51, thereby connecting the spring arm mounting bracket 5 to the reinforcing beam 42. Similarly, the end of the second bracket section 53 facing away from the first bracket section 52, i.e., the end of the second bracket section 53 near the longitudinal beam 3, is connected to the lower side of the longitudinal beam 3, thereby connecting the spring arm mounting bracket 5 to the longitudinal beam 3.

[0076] like Figure 2 and Figure 3 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 set on the reinforcing beam 42 to achieve accurate installation of the reinforcing beam 42 and extend its service life. The reinforcing beam 42 is easy to form, has a simple structure, and low manufacturing cost.

[0077] In some embodiments, the spring arm mounting bracket 5 includes a first plate 55 and a second plate 56, which are fastened together. The first plate 55 and the second plate 56 together define an insertion interface 51. Thus, the spring arm mounting bracket 5 can be constructed as two plate parts, which helps to reduce the processing difficulty of a single spring arm mounting bracket 5.

[0078] Specifically, such as Figure 5As shown, the spring arm mounting bracket 5 includes a first plate 55 and a second plate 56. The first plate 55 and the second plate 56 can be connected longitudinally, such as with the first plate 55 located at the front and the second plate 56 located at the rear. The first plate 55 and the second plate 56 are connected longitudinally, i.e., in the front-rear direction of the vehicle, to form an integral spring arm mounting bracket 5 structure. The connection between the first plate 55 and the second plate 56 can be further welded to improve the connection stability and reliability of the first plate 55 and the second plate 56. Alternatively, the first plate 55 and the second plate 56 can also be connected in other directions or at other angles, making the setup more flexible.

[0079] When the first plate 55 and the second plate 56 are fastened together, they together define the insertion interface 51. The reinforcing beam 42 is inserted into the insertion interface 51, thereby realizing the connection between the spring arm mounting bracket 5 and the reinforcing beam 42.

[0080] In some embodiments, the subframe 100 further includes a reinforcing member 6, which is connected to the rear crossbeam 2, the spring arm mounting bracket 5 and the longitudinal beam 3 respectively, and the reinforcing member 6 is connected to the lower side of the longitudinal beam 3.

[0081] Specifically, such as Figure 1 and Figure 10 As shown, the subframe 100 also includes a reinforcing member 6, which is connected to the rear crossbeam 2, the spring arm mounting bracket 5, 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 mounting bracket 5, and the longitudinal beam 3, thereby further enhancing the overall structural strength of the subframe 100. The reinforcing member 6 also enables an effective connection between the spring arm mounting bracket 5 and the rear crossbeam 2, further enhancing the strength, stiffness, and fatigue performance of the spring arm mounting bracket 5.

[0082] Among them, such as Figure 10 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 mounting bracket 5 on the longitudinal beam 3. This facilitates the connection of the reinforcing member 6 with the rear crossbeam 2, the spring arm mounting bracket 5, and the longitudinal beam 3, and also helps the subframe 100 resist impact forces from the bottom of the vehicle.

[0083] And such as Figure 1 As shown, the reinforcing member 6 is connected to the lower side of the longitudinal beam 3, and also strengthens the triangular cavity structure 7 formed by the rear crossbeam 2, the spring arm mounting bracket 5, the reinforcing beam 42 and the longitudinal beam 3, so as to further improve the stability of the triangular cavity structure 7, which helps the rear crossbeam 2, the spring arm mounting bracket 5, the reinforcing beam 42 and the longitudinal beam 3 to maintain structural stability and jointly resist deformation.

[0084] In other embodiments, such as Figure 11 and Figure 12As shown, the reinforcing member 6 includes a first reinforcing plate 61 and two second reinforcing plates 62. The two second reinforcing plates 62 are respectively connected to both sides of the first reinforcing plate 61, so that the reinforcing member 6 is constructed as a groove-shaped member and is open to the top, which can form a "U" shaped groove, a square groove, an irregular groove, etc. Thus, the reinforcing member 6 can provide sufficient rigidity and strength, which can greatly improve the rigidity and fatigue performance of the spring arm mounting bracket 5, and also reduce its weight, which is conducive to the lightweighting of the vehicle.

[0085] In addition, since the reinforcing member 6 is constructed as a groove, after the reinforcing member 6 is connected to the rear crossbeam 2, the spring arm mounting bracket 5 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.

[0086] 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.

[0087] This utility model also proposes a vehicle.

[0088] The vehicle according to the present invention includes the subframe 100 of any of the above embodiments.

[0089] The vehicle in this embodiment of the utility model can be a hybrid vehicle, a pure electric vehicle, a fuel vehicle, etc.

[0090] According to the vehicle of this utility model embodiment, by setting a reinforcing beam assembly 4 including an intermediate connecting plate 41 and two reinforcing beams 42, the spring arm mounting bracket 5 is strengthened, which effectively improves the installation strength, stiffness and fatigue performance of the spring arm mounting bracket 5. Furthermore, by connecting the two reinforcing beams 42 to the rear crossbeam 2 through the intermediate connecting plate 41, the connection strength, stiffness and fatigue performance between the two reinforcing beams 42 and the intermediate connecting plate 41 are improved, making the structure of the two reinforcing beams 42 more stable and reliable, thereby further improving the installation strength, stiffness and fatigue performance of the spring arm mounting bracket 5, and improving the torsional stiffness and strength of the vehicle.

[0091] 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.

[0092] 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 along the vehicle, and the two ends of each longitudinal beam (3) are connected to the front crossbeam (1) and the rear crossbeam (2) respectively. Each longitudinal beam (3) is provided with a spring arm mounting bracket (5). The reinforcing beam assembly (4) includes an intermediate connecting plate (41) and two reinforcing beams (42). The intermediate connecting plate (41) is fixedly connected between the two reinforcing beams (42). The two reinforcing beams (42) are respectively connected to the two spring arm mounting brackets (5) one-to-one. The intermediate connecting plate (41) is connected to the rear crossbeam (2).

2. The subframe according to claim 1, characterized in that, The inner ends of the two reinforcing beams (42) are configured to be fitted and connected to both ends of the intermediate connecting plate (41); At least a portion of the inner end of the reinforcing beam (42) and the intermediate connecting plate (41) are attached to and connected to the rear crossbeam (2).

3. The subframe according to claim 2, characterized in that, The intermediate connecting plate (41) includes a main body (411) and a support plate (412). The support plate (412) is bent and connected to the lower edge of the main body (411). The main body (411) is attached to the front side of the rear crossbeam (2), and the support plate (412) is supported on the lower side of the rear crossbeam (2).

4. The subframe according to claim 3, characterized in that, The inner ends of the two reinforcing beams (42) are respectively connected to the two ends of the main body (411). At least a portion of the inner end of the reinforcing beam (42) is attached to the front side of the rear crossbeam (2), and at least another portion is supported on the lower side of the rear crossbeam (2).

5. The subframe according to claim 1, 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 (41) are connected to the connecting boss (21).

6. The subframe according to any one of claims 1-5, characterized in that, The inner end of the spring arm mounting bracket (5) is formed with a plug-in interface (51), and at least a portion of the outer end of the reinforcing beam (42) is plugged into the plug-in interface (51).

7. The subframe according to claim 6, characterized in that, The spring arm mounting bracket (5) includes a first bracket section (52) and a second bracket section (53) that are bent and connected. A spring arm mounting part (54) is provided at the connection between the first bracket section (52) and the second bracket section (53). The insertion interface (51) is formed at the end of the first bracket section (52) that is away from the second bracket section (53). The end of the second bracket section (53) that is away from the first bracket section (52) is connected to the longitudinal beam (3).

8. The subframe according to claim 6, characterized in that, The spring arm mounting bracket (5) includes a first plate (55) and a second plate (56), which are fastened together and define the insertion interface (51).

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 mounting bracket (5) 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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