Auxiliary frame assembly and vehicle

Abstract

The utility model relates to an auxiliary frame assembly and a vehicle, and belongs to the technical field of automobiles, and the auxiliary frame assembly comprises a longitudinal beam upper plate, a longitudinal beam lower plate, a swing arm small shaft sleeve mounting bracket, a reinforcing plate and a sleeve. Wherein the longitudinal beam lower plate is arranged at the bottom of the longitudinal beam upper plate, and a mounting cavity is formed between the longitudinal beam upper plate and the longitudinal beam lower plate. The swing arm small shaft sleeve installation support is arranged in the installation cavity, and the top and the bottom of the swing arm small shaft sleeve installation support are connected to the longitudinal beam upper plate and the longitudinal beam lower plate respectively. The reinforcing plate is arranged in the installation cavity and connected with the longitudinal beam upper plate and the swing arm small shaft sleeve installation support. The sleeve penetrates through the longitudinal beam upper plate and is connected with the reinforcing plate, and the bottom of the sleeve is located between the longitudinal beam lower plate and the reinforcing plate. Force of the swing arm is transmitted to the sleeve through the swing arm small shaft sleeve installation support and the reinforcing plate and then transmitted to a vehicle body through the sleeve. Therefore, the load is dispersed, and the stability of the whole auxiliary frame assembly is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a subframe assembly and a vehicle. BACKGROUND

[0002] With the rapid development of social economy and the continuous improvement of people's living standards, automobiles have become an indispensable means of transportation in modern life. Cars not only constantly pursue excellence in design and performance, but also make a lot of technical innovations in comfort, safety and environmental protection. In recent years, with the rise of new energy vehicles, automobile technology is developing towards intelligence, electrification and light weight.

[0003] The subframe assembly is an important part of the automobile chassis system, mainly used to support and install the suspension system, steering system and part of the powertrain components of the vehicle. It plays a key role in the controllability, comfort, safety and overall structural stability of the vehicle. In the prior art, the subframe assembly includes a swing arm small shaft sleeve mounting bracket, which is arranged between the upper plate of the longitudinal beam and the lower plate of the longitudinal beam. The upper plate of the longitudinal beam is provided with a subframe middle mounting bracket.

[0004] In the prior art, the swing arm small shaft sleeve mounting position is the load input point, where a large load is input by the small shaft sleeve. The traditional subframe cannot effectively disperse the input load, resulting in stress concentration at this point and poor performance. CONTENT OF THE UTILITY MODEL

[0005] The utility model at least solves one of the technical problems in the related art to some extent.

[0006] Therefore, the present application aims to provide a subframe assembly and a vehicle. The force of the swing arm is transmitted to the swing arm small shaft sleeve mounting bracket and then to the sleeve through the reinforcing plate, and then to the vehicle body through the sleeve. Thus, the load is dispersed, improving the stability of the entire subframe assembly. The longitudinal beam formed by the upper plate of the longitudinal beam and the lower plate of the longitudinal beam bears the main force, thereby avoiding cracking of the upper plate of the longitudinal beam and the lower plate of the longitudinal beam. Moreover, the bottom end of the sleeve does not penetrate the lower plate of the longitudinal beam, thereby saving material costs and reducing the overall weight of the subframe assembly.

[0007] To achieve the above-mentioned purpose, the utility model provides a subframe assembly, comprising:

[0008] an upper plate of a longitudinal beam;

[0009] a lower plate of a longitudinal beam, the lower plate of the longitudinal beam being arranged at the bottom of the upper plate of the longitudinal beam, and an installation cavity being formed between the upper plate of the longitudinal beam and the lower plate of the longitudinal beam;

[0010] The swing arm small shaft sleeve mounting bracket is arranged in the mounting cavity, and the top and bottom of the swing arm small shaft sleeve mounting bracket are connected to the longitudinal beam upper plate and the longitudinal beam lower plate, respectively.

[0011] The reinforcing plate is arranged in the mounting cavity, and the reinforcing plate is connected to the longitudinal beam upper plate and the swing arm small shaft sleeve mounting bracket.

[0012] The sleeve pipe penetrates the longitudinal beam upper plate, penetrates and connects the reinforcing plate, and the bottom of the sleeve pipe is located between the longitudinal beam lower plate and the reinforcing plate.

[0013] In the technical scheme, the swing arm small shaft sleeve mounting bracket and the reinforcing plate are arranged, and the sub-frame assembly realizes the design of high integration. This structure not only improves the overall rigidity and stability of the sub-frame, but also provides an accurate mounting position for the swing arm small shaft sleeve, ensuring the reliability and stability of the swing arm small shaft sleeve during vehicle driving. At the same time, the design of the sleeve pipe further enhances the overall structure, providing a reliable interface for the connection of the sub-frame and other components, improving the carrying capacity and service life of the sub-frame. And because the sleeve pipe is connected to the reinforcing plate and the longitudinal beam upper plate at the same time, the force of the swing arm is transmitted to the swing arm small shaft sleeve mounting bracket, and then transmitted to the sleeve pipe through the reinforcing plate, and then transmitted to the vehicle body through the sleeve pipe. Thus, the load is dispersed, and the stability of the entire sub-frame assembly is improved. The longitudinal beam formed by the longitudinal beam upper plate and the longitudinal beam lower plate avoids bearing the main force, thereby avoiding cracking of the longitudinal beam upper plate and the longitudinal beam lower plate. Moreover, the bottom end of the sleeve pipe does not penetrate the longitudinal beam lower plate, which not only saves material costs but also reduces the overall weight of the sub-frame assembly.

[0014] In some embodiments of the present application, the swing arm small shaft sleeve mounting bracket comprises:

[0015] The mounting bracket upper plate is connected to the longitudinal beam upper plate.

[0016] The mounting bracket lower plate is connected to the mounting bracket upper plate and the longitudinal beam lower plate.

[0017] In the technical scheme, the swing arm small shaft sleeve mounting bracket is designed as a layered structure, making its connection with the longitudinal beam upper plate and the longitudinal beam lower plate more secure. This layered design can effectively disperse the load and avoid stress concentration, thereby improving the carrying capacity and service life of the swing arm small shaft sleeve mounting bracket, while providing more stable support for the swing arm small shaft sleeve to ensure its movement accuracy and reliability during vehicle driving. This layered structure can also effectively transmit the force of the swing arm to the longitudinal beam upper plate and the longitudinal beam lower plate, further enhancing the stability of the sub-frame.

[0018] In some embodiments of the present application, the reinforcing plate is connected to the mounting bracket upper plate.

[0019] In the technical solution, the connection strength between the swing arm small shaft sleeve mounting bracket and the upper plate of the longitudinal beam is further enhanced. This connection method not only improves the rigidity of the entire subframe assembly, but also optimizes the load transmission path, enabling the subframe to better withstand dynamic loads from the swing arm, thereby improving the handling stability and comfort of the vehicle. The connection between the reinforcing plate and the upper plate of the mounting bracket can effectively disperse the force transmitted by the swing arm, preventing local stress concentration and further improving the stability of the subframe.

[0020] In some embodiments of the present application, a first insertion hole is formed in the upper plate of the longitudinal beam, and the edge of the first insertion hole extends away from the lower plate of the longitudinal beam; the sleeve is welded to the upper plate of the longitudinal beam at the first insertion hole.

[0021] In the technical solution, this design ensures the connection strength and precision between the sleeve and the upper plate of the longitudinal beam. The extension design of the edge of the insertion hole not only facilitates welding work, but also further enhances the structural stability of the welded part, preventing stress concentration problems that may occur during welding, thereby improving the overall reliability and service life of the subframe assembly.

[0022] In some embodiments of the present application, a second insertion hole is formed in the reinforcing plate, and the edge of the second insertion hole extends away from the upper plate of the longitudinal beam; the sleeve is welded to the reinforcing plate at the second insertion hole.

[0023] In the technical solution, this design ensures the connection strength and precision between the sleeve and the reinforcing plate. The extension design of the edge of the insertion hole not only facilitates welding work, but also further enhances the structural stability of the welded part, preventing stress concentration problems that may occur during welding, thereby improving the overall reliability and service life of the subframe assembly.

[0024] In some embodiments of the present application, the reinforcing plate has a bent portion for fitting and connecting to the inner side wall of the upper plate of the longitudinal beam.

[0025] In the technical solution, this design not only increases the contact area between the reinforcing plate and the upper plate of the longitudinal beam, but also improves the connection strength between the two, further enhancing the overall rigidity of the subframe assembly. In addition, the design of the bent portion can effectively disperse stress and prevent local deformation, thereby prolonging the service life of the subframe. The design of the bent portion can also evenly distribute the force transmitted by the swing arm to the upper plate of the longitudinal beam, further improving the stability of the subframe.

[0026] In some embodiments of the present application, the upper plate of the longitudinal beam, the reinforcing plate, and the lower plate of the longitudinal beam are arranged along the height direction of the subframe assembly; the portion of the sleeve inserted into the upper plate of the longitudinal beam and the reinforcing plate is an insertion section; the axial direction of the insertion section is the same as the height direction of the subframe assembly.

[0027] In the technical scheme, not only the structural layout is optimized, facilitating processing and assembly, but also the connection precision and stability between the sleeve and the upper plate of the longitudinal beam and the reinforcing plate are ensured.

[0028] In a second aspect, the application further provides a subframe assembly, comprising:

[0029] a lower plate of longitudinal beam, which is arranged at the bottom of the upper plate of longitudinal beam, and a mounting cavity is formed between the upper plate of longitudinal beam and the lower plate of longitudinal beam;

[0030] an installation support for swing arm small shaft sleeve, which is arranged in the mounting cavity, and the top and bottom of the installation support for swing arm small shaft sleeve are connected to the upper plate of longitudinal beam and the lower plate of longitudinal beam respectively;

[0031] a reinforcing plate, which is arranged in the mounting cavity and connected to the upper plate of longitudinal beam and the installation support for swing arm small shaft sleeve;

[0032] a sleeve, which penetrates through the upper plate of longitudinal beam, and the bottom end of the sleeve is connected to the upper surface of the reinforcing plate.

[0033] In the technical scheme, the installation support for swing arm small shaft sleeve and the reinforcing plate are arranged, and the subframe assembly is designed with high integration. This structure not only improves the overall rigidity and stability of the subframe, but also provides an accurate installation position for the swing arm small shaft sleeve, ensuring the reliability and stability of the swing arm small shaft sleeve during vehicle driving. Meanwhile, the design of the sleeve further enhances the overall structure, providing a reliable interface for the connection between the subframe and other components, improving the load-bearing capacity and service life of the subframe. Moreover, since the sleeve is connected to the reinforcing plate and the upper plate of longitudinal beam, the force of the swing arm is transmitted to the installation support for swing arm small shaft sleeve, and then transmitted to the sleeve through the reinforcing plate, and finally transmitted to the vehicle body through the sleeve. In this way, the load is dispersed, improving the stability of the entire subframe assembly. The longitudinal beam formed by the upper plate of longitudinal beam and the lower plate of longitudinal beam avoids bearing the main force, thereby avoiding cracking of the upper plate of longitudinal beam and the lower plate of longitudinal beam. Moreover, the bottom end of the sleeve does not penetrate through the reinforcing plate, which not only saves material costs but also reduces the overall weight of the subframe assembly.

[0034] In some embodiments of the application, the bottom end of the sleeve is attached to the upper surface of the reinforcing plate, and the sleeve is welded to the reinforcing plate.

[0035] In the technical scheme, this connection method more tightly connects the sleeve and the reinforcing plate, which can effectively transmit the force of the installation support for swing arm small shaft sleeve to the sleeve through the reinforcing plate.

[0036] In a third aspect, the application further provides a vehicle, comprising:

[0037] The body, the swing arm and the auxiliary frame assembly;

[0038] The sleeve in the auxiliary frame assembly is connected with the body;

[0039] The swing arm is connected with the swing arm small shaft sleeve mounting bracket.

[0040] In the technical scheme, during the driving of the vehicle, the force of the swing arm is transmitted to the reinforcing plate through the swing arm small shaft sleeve mounting bracket and is transmitted to the body through the reinforcing plate and the sleeve. The main force is avoided to be borne by the upper plate of the longitudinal beam and the lower plate of the longitudinal beam, so that the cracking of the upper plate of the longitudinal beam and the lower plate of the longitudinal beam is avoided, and the stability of the whole auxiliary frame assembly is improved.

[0041] From the above technical scheme, the additional aspects and advantages of the present application will be partially given in the following description, partially will be obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0042] Figure 1 It is the overall structure schematic view of the auxiliary frame assembly according to the embodiment of the present application;

[0043] Figure 2 It is the side view of the auxiliary frame assembly according to the embodiment of the present application;

[0044] Figure 3 It is the front view of the auxiliary frame assembly according to the embodiment of the present application;

[0045] Figure 4 It is Figure 3 the sectional view in A-A direction;

[0046] Figure 5 It is Figure 4 the enlarged schematic view at the reinforcing plate;

[0047] Figure 6 It is the partial structure schematic view of the auxiliary frame assembly according to the embodiment of the present application without the upper plate of the longitudinal beam;

[0048] Figure 7 It is the exploded schematic view of the auxiliary frame assembly according to the embodiment of the present application without the upper plate of the longitudinal beam.

[0049] In the above figures: 100, the upper plate of the longitudinal beam; 200, the lower plate of the longitudinal beam; 300, the swing arm small shaft sleeve mounting bracket; 301, the mounting bracket upper plate; 302, the mounting bracket lower plate; 400, the reinforcing plate; 500, the sleeve. DETAILED DESCRIPTION

[0050] In the description of the utility model, it is necessary to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0051] In the utility model, unless otherwise expressly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise expressly limited. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] In the utility model, unless otherwise expressly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] In the utility model, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0054] The utility model will be described in detail below through exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially incorporated into other embodiments without further elaboration.

[0055] It should be noted that in the field of automobiles, the subframe assembly is an important component of the automobile chassis system, and the subframe assembly includes a swing arm small shaft sleeve mounting bracket, which is arranged between the upper plate of the longitudinal beam and the lower plate of the longitudinal beam. The upper plate of the longitudinal beam is provided with a subframe middle mounting bracket.

[0056] In the prior art, the force received by the swing arm small shaft sleeve mounting bracket is directly transmitted to the subframe assembly itself. Excessive load can cause the upper plate of the longitudinal beam and the lower plate of the longitudinal beam in the subframe assembly to crack.

[0057] Based on this, the present application proposes a subframe assembly and a vehicle, which adds a reinforcing plate, and the reinforcing plate connects the swing arm small shaft sleeve mounting bracket and the sleeve pipe. The effect of transmitting the force of the swing arm small shaft sleeve mounting bracket to the sleeve pipe through the reinforcing plate and then transmitting the force to the vehicle body is achieved, and the problem of cracking of the upper plate of the longitudinal beam and the lower plate of the longitudinal beam in the subframe assembly is solved.

[0058] In the following, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0059] As shown in the accompanying Figures 1 to 7 As shown in one illustrative embodiment of the subframe assembly of the utility model, the subframe assembly includes a longitudinal beam, which is the main load-bearing structure of the subframe and can effectively support key components such as the engine, transmission, suspension system, etc. Secondly, the longitudinal beam plays a key role in the collision process, absorbing collision energy through collapse deformation, reducing the impact of the impact force on the passenger compartment, thereby improving the collision safety of the vehicle.

[0060] In some embodiments, the longitudinal beam includes a longitudinal beam upper plate 100, which is an important component of the automobile longitudinal beam structure and is mainly used to enhance the structural strength and stiffness of the longitudinal beam. It can effectively absorb and attenuate the impact energy when the vehicle collides, reducing the deformation amount of the longitudinal beam in the collision, thereby improving the passive safety of the automobile.

[0061] In some embodiments, the longitudinal beam includes a longitudinal beam lower plate 200, which is arranged at the bottom of the longitudinal beam upper plate 100, and an installation cavity is formed between the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200; this structural design can effectively improve the stiffness and stability of the subframe assembly. Through the installation cavity between the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, the remaining structures can be conveniently arranged in the installation cavity.

[0062] In some embodiments, the subframe assembly includes a swing arm small shaft sleeve mounting bracket 300 arranged in the mounting cavity, and the top and bottom of the swing arm small shaft sleeve mounting bracket 300 are connected to the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, respectively. The swing arm small shaft sleeve mounting bracket 300 is used to fix the swing arm small shaft sleeve, so as to ensure that it can stably connect the swing arm and the subframe or other suspension components during vehicle driving. Through the connection of the swing arm small shaft sleeve mounting bracket 300 with the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, the force generated by the suspension system during driving can be effectively transmitted and dispersed, and local stress concentration is reduced. In addition, this connection mode can also improve the rigidity and durability of the subframe assembly, avoid problems such as welding fatigue cracking under harsh working conditions, and thus ensure the handling stability and ride comfort of the vehicle.

[0063] Please refer to Figures 2 to 7 In some embodiments, the subframe assembly includes a reinforcing plate 400 arranged in the mounting cavity, and the reinforcing plate 400 is connected to the longitudinal beam upper plate 100 and the swing arm small shaft sleeve mounting bracket 300. The subframe assembly further includes a sleeve pipe 500 penetrating the longitudinal beam upper plate 100, the sleeve pipe 500 penetrating and connecting the reinforcing plate 400, and the bottom of the sleeve pipe 500 being located between the longitudinal beam lower plate 200 and the reinforcing plate 400.

[0064] Through the above scheme, the swing arm small shaft sleeve mounting bracket 300 and the reinforcing plate 400 are arranged, and the subframe assembly realizes a highly integrated design. This structure not only improves the overall rigidity and stability of the subframe assembly, but also provides an accurate mounting position for the swing arm small shaft sleeve, ensuring its reliability and stability during vehicle driving. At the same time, the design of the sleeve pipe 500 further enhances the overall structure, provides a reliable interface for the connection of the subframe assembly and other components, and improves the carrying capacity and service life of the subframe assembly. And because the sleeve pipe 500 is connected to the reinforcing plate 400 and the longitudinal beam upper plate 100 at the same time, the force of the swing arm will be transmitted to the swing arm small shaft sleeve mounting bracket 300, and then transmitted to the sleeve pipe 500 through the reinforcing plate 400, and then transmitted to the vehicle body through the sleeve pipe 500. Thus, the load is dispersed, the stability of the entire subframe assembly is improved, and the longitudinal beam formed by the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200 avoids bearing the main force, thereby avoiding cracking of the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200. In addition, the bottom end of the sleeve pipe 500 does not penetrate the longitudinal beam lower plate 200, which not only saves material costs but also reduces the overall weight of the subframe assembly.

[0065] In some embodiments, the edge of the upper plate 100 of the longitudinal beam is bent downward, i.e. the edge of the upper plate 100 of the longitudinal beam is bent towards the direction of the lower plate 200 of the longitudinal beam. The edge of the upper plate 100 of the longitudinal beam is connected with the edge of the lower plate 200 of the longitudinal beam. This structural design can significantly enhance the overall rigidity and stability of the longitudinal beam of the subframe. Through the bending and connection of the edge, a mounting cavity is formed. And because of its bent arrangement, the torsional and bending resistance of the longitudinal beam is effectively improved, reducing the deformation and stress concentration problems that may occur under dynamic load.

[0066] In some embodiments, the edge of the lower plate of the longitudinal beam is bent upward, i.e. the edge of the lower plate 200 of the longitudinal beam is bent towards the direction of the upper plate 100 of the longitudinal beam. This structure further enhances the overall rigidity and stability of the longitudinal beam of the subframe. And the space of the mounting cavity is larger, facilitating the installation of internal structures.

[0067] Please refer to Figures 1 to 7 In some embodiments, the swing arm small shaft sleeve mounting bracket 300 includes a mounting bracket upper plate 301 connected with the upper plate 100 of the longitudinal beam. The swing arm small shaft sleeve mounting bracket 300 includes a mounting bracket lower plate 302 connected with the mounting bracket upper plate 301 and the lower plate 200 of the longitudinal beam. The swing arm small shaft sleeve mounting bracket 300 is designed as a layered structure, making its connection with the upper plate 100 of the longitudinal beam and the lower plate 200 of the longitudinal beam more secure. This layered design can effectively disperse the load and avoid stress concentration, thereby improving the load-bearing capacity and service life of the swing arm small shaft sleeve mounting bracket 300, while providing more stable support for the swing arm small shaft sleeve and ensuring its movement precision and reliability during vehicle driving. This layered structure can also effectively transmit the force of the swing arm to the upper plate 100 of the longitudinal beam and the lower plate 200 of the longitudinal beam, further enhancing the stability of the subframe assembly.

[0068] In some embodiments, the mounting bracket upper plate 301 includes a first horizontal section and two first vertical sections. The two first vertical sections are located on opposite sides of the first horizontal section, so that the mounting bracket forms an inverted U shape. The top of the first horizontal section is connected with the upper plate 100 of the longitudinal beam, and the specific connection method can be welding. The inverted U-shaped structure provides a stable mounting foundation for the swing arm small shaft sleeve, enhances the overall structural strength and stability, and can effectively disperse the load transmitted by the swing arm to avoid stress concentration. Secondly, the arrangement of the first vertical section increases the contact area with the upper plate 100 of the longitudinal beam, further improving the connection strength, while providing more space and interfaces for the installation of other components.

[0069] In some embodiments, the mounting bracket upper plate 301 further comprises a second vertical section located on one side of the first horizontal section, and the two sides of the second vertical section are connected to the side edges of the two first vertical sections, that is, the first vertical section and the second vertical section also form a U-shaped structure, further improving the structural strength of the mounting bracket upper plate 301. This design further enhances the structural strength and stability of the mounting bracket upper plate 301. The addition of the second vertical section not only increases the number of connection points and support areas, but also optimizes the load distribution path, so that the force transmitted by the swing arm can be more evenly distributed to the longitudinal beam upper plate 100, effectively avoiding stress concentration and local deformation.

[0070] In some embodiments, the mounting bracket lower plate 302 comprises a second horizontal section and two third vertical sections. The two third vertical sections are located on opposite sides of the second horizontal section, so that the mounting bracket forms a U shape. The bottom of the second horizontal section is connected to the longitudinal beam lower plate 200, and the specific connection method can be welding. The inverted U-shaped structure provides a stable mounting foundation for the swing arm small shaft sleeve, enhances the overall structural strength and stability, and can effectively disperse the load transmitted by the swing arm to avoid stress concentration. Secondly, the third vertical section increases the contact area with the longitudinal beam lower plate 200, further improving the connection strength, while providing more space and interfaces for the installation of other components.

[0071] Further, the third vertical section is attached to and connected with the first vertical section, realizing the connection of the mounting bracket upper plate 301 and the mounting bracket lower plate 302. This structural design not only enhances the overall rigidity and stability of the mounting bracket, but also optimizes the load transmission path, so that the swing arm small shaft sleeve mounting bracket 300 can more effectively disperse the load to the longitudinal beam upper plate 100 and lower plate, avoiding stress concentration and reducing the risk of fatigue cracking.

[0072] In some embodiments, the mounting bracket lower plate 302 further comprises a fourth vertical section located on one side of the second horizontal section, and the two sides of the fourth vertical section are connected to the side edges of the two third vertical sections, that is, the fourth vertical section and the third vertical section also form a U-shaped structure, further improving the structural strength of the mounting bracket lower plate 302. This design further enhances the structural strength and stability of the mounting bracket lower plate 302. The addition of the fourth vertical section not only increases the number of connection points and support areas, but also optimizes the load distribution path, so that the force transmitted by the swing arm can be more evenly distributed to the longitudinal beam lower plate 200, effectively avoiding stress concentration and local deformation.

[0073] Please refer to Figures 1 to 7In some embodiments, the reinforcing plate 400 is connected to the mounting bracket upper plate 301, further enhancing the connection strength between the swing arm small shaft mounting bracket 300 and the longitudinal beam upper plate 100. This connection not only improves the rigidity of the entire subframe assembly, but also optimizes the load transfer path, enabling the subframe assembly to better withstand dynamic loads from the swing arm, thereby improving the handling stability and comfort of the vehicle. The connection of the reinforcing plate 400 and the mounting bracket upper plate 301 can effectively disperse the force transmitted by the swing arm, preventing local stress concentration and further improving the stability of the subframe assembly.

[0074] In some embodiments, one side of the reinforcing plate 400 is connected to the first vertical section, specifically by welding. This connection further enhances the structural stability of the subframe assembly and optimizes the load transfer path.

[0075] In some embodiments, the reinforcing plate 400 has a bent portion that is used to fit and connect to the inner side wall of the longitudinal beam upper plate 100. This design not only increases the contact area between the reinforcing plate 400 and the longitudinal beam upper plate 100, but also improves the connection strength between the two, further enhancing the overall rigidity of the subframe assembly. In addition, the design of the bent portion can effectively disperse stress and prevent local deformation, thereby prolonging the service life of the subframe assembly. The design of the bent portion can also evenly distribute the force transmitted by the swing arm to the longitudinal beam upper plate 100, further improving the stability of the subframe assembly.

[0076] Further, the bent portion is welded to the vertical inner side wall of the longitudinal beam upper plate 100. More weld points can be provided between the bent portion and the side wall of the longitudinal beam upper plate 100 to increase the connection strength between the reinforcing plate 400 and the longitudinal beam upper plate 100.

[0077] In some embodiments, a first insertion hole is formed on the longitudinal beam upper plate 100, and the edge of the first insertion hole extends away from the longitudinal beam lower plate 200; the sleeve 500 is welded to the longitudinal beam upper plate 100 at the first insertion hole. This design ensures the connection strength and precision between the sleeve 500 and the longitudinal beam upper plate 100. The extension design of the insertion hole edge not only facilitates welding work, but also further enhances the structural stability of the welded part, preventing stress concentration problems that may occur during welding, thereby improving the overall reliability and service life of the subframe assembly. Moreover, the sleeve 500 can be welded to the longitudinal beam upper plate 100 outside the longitudinal beam, facilitating construction operation.

[0078] In another embodiment, the edge of the first insertion hole extends away from the longitudinal beam upper plate 100.

[0079] In some embodiments, a second insertion hole is formed on the reinforcing plate 400, and the edge of the second insertion hole extends away from the longitudinal beam upper plate 100; the sleeve 500 is welded to the reinforcing plate 400 at the second insertion hole. This design ensures the connection strength and precision between the sleeve 500 and the reinforcing plate 400. The extension design of the insertion hole edge not only facilitates the welding work, but also further enhances the structural stability of the welding site, preventing stress concentration problems that may occur during welding, thereby improving the overall reliability and service life of the subframe assembly. When welding, the sleeve 500 can be inserted through the longitudinal beam upper plate 100, and then the sleeve 500 and the reinforcing plate 400 are welded on the side of the reinforcing plate 400 away from the longitudinal beam upper plate 100. Finally, the longitudinal beam lower plate 200 and the longitudinal beam upper plate 100 are welded and connected.

[0080] In another embodiment, the edge of the second insertion hole extends towards the longitudinal beam upper plate 100.

[0081] In some embodiments, the longitudinal beam upper plate 100, the reinforcing plate 400, and the longitudinal beam lower plate 200 are arranged along the height direction of the subframe assembly; the portion of the sleeve 500 inserted into the longitudinal beam upper plate 100 and the reinforcing plate 400 is an insertion section; the axial direction of the insertion section is the same as the height direction of the subframe assembly. Not only does this optimize the structural layout, making it easier to process and assemble, but it also ensures the connection precision and stability between the sleeve 500 and the longitudinal beam upper plate 100 and the reinforcing plate 400.

[0082] Further, the height direction of the subframe assembly is the height direction of the vehicle. The insertion end of the sleeve 500 is vertically arranged, which can better transmit force in the vertical direction to the vehicle body, optimizing the load transmission path and ensuring the stability of the subframe assembly when subjected to dynamic loads, while reducing the problem of local stress concentration caused by uneven load transmission. The vertically arranged sleeve 500 not only improves the reliability of the connection between the subframe assembly and the vehicle body, but also enhances the anti-vibration performance of the overall structure, further improving the vehicle's handling stability and ride comfort.

[0083] In a second aspect, the present application also provides a subframe assembly, which includes a longitudinal beam, which is the main load-bearing structure of the subframe assembly and can effectively support key components such as the engine, transmission, suspension system, etc. Secondly, the longitudinal beam plays a key role in the collision process, absorbing collision energy through collapse deformation, reducing the impact on the passenger compartment, thereby improving the crash safety of the vehicle.

[0084] In some embodiments, the longitudinal beam includes a longitudinal beam upper plate 100, which is an important component of the automobile longitudinal beam structure and is mainly used to enhance the structural strength and stiffness of the longitudinal beam. It can effectively absorb and attenuate the impact energy during vehicle collision, reducing the deformation of the longitudinal beam in the collision, thereby improving the passive safety of the automobile.

[0085] In some embodiments, the longitudinal beam comprises a longitudinal beam lower plate 200 arranged at the bottom of the longitudinal beam upper plate 100, and a mounting cavity is formed between the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200; such a structural design can effectively improve the stiffness and stability of the subframe assembly. By means of the mounting cavity between the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, the remaining structures can be arranged in the mounting cavity.

[0086] In some embodiments, the subframe assembly comprises a swing arm small shaft sleeve mounting bracket 300 arranged in the mounting cavity, and the top and bottom of the swing arm small shaft sleeve mounting bracket 300 are connected to the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, respectively. The swing arm small shaft sleeve mounting bracket 300 is used to fix the swing arm small shaft sleeve, so as to ensure that it can stably connect the swing arm and the subframe assembly during vehicle driving. By connecting the swing arm small shaft sleeve mounting bracket 300, the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200, the force generated by the suspension system during driving can be effectively transmitted and dispersed, and local stress concentration is reduced. In addition, this connection mode can also improve the stiffness and durability of the subframe assembly, avoiding problems such as welding fatigue cracking under harsh working conditions, so as to ensure the handling stability and ride comfort of the vehicle.

[0087] In some embodiments, the subframe assembly comprises a reinforcing plate 400 arranged in the mounting cavity, and the reinforcing plate 400 is connected to the longitudinal beam upper plate 100 and the swing arm small shaft sleeve mounting bracket 300. The subframe assembly further comprises a sleeve pipe 500 penetrating the longitudinal beam upper plate 100, and the bottom end of the sleeve pipe 500 is connected to the upper surface of the reinforcing plate 400.

[0088] Through the above scheme, by arranging the swing arm small shaft sleeve mounting bracket 300 and the reinforcing plate 400, the subframe assembly realizes a highly integrated design. Such a structure not only improves the overall rigidity and stability of the subframe assembly, but also provides an accurate mounting position for the swing arm small shaft sleeve, ensuring its reliability and stability during vehicle driving. At the same time, the design of the sleeve pipe 500 further enhances the integrity of the structure, providing a reliable interface for the connection of the subframe assembly and other components, and improving the carrying capacity and service life of the subframe assembly. Moreover, because the sleeve pipe 500 is connected to the reinforcing plate 400 and the longitudinal beam upper plate 100 at the same time, the force of the swing arm is transmitted to the swing arm small shaft sleeve mounting bracket 300, and then transmitted to the sleeve pipe 500 through the reinforcing plate 400, and finally transmitted to the vehicle body through the sleeve pipe 500. Thus, the load is dispersed, and the stability of the entire subframe assembly is improved. The longitudinal beam formed by the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200 bears the main force, thereby avoiding cracking of the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200. Moreover, the bottom end of the sleeve pipe 500 does not penetrate the reinforcing plate 400, which not only saves material costs but also reduces the overall weight of the subframe assembly.

[0089] In some embodiments, the part of the sleeve 500 inserted into the longitudinal beam upper plate 100 and connected with the reinforcing plate 400 is an insertion section. The axial direction of the insertion section is perpendicular to the surface of the part to be connected with the reinforcing plate 400. In this way, the connection between the sleeve 500 and the reinforcing plate 400 is stable. When the force is transmitted, the swing arm small shaft sleeve mounting bracket 300 transmits the force to the reinforcing plate 400, the reinforcing plate 400 transmits the force to the sleeve 500 along the axial direction of the insertion section, and then the sleeve 500 transmits the force to the vehicle body.

[0090] In some embodiments, the bottom end of the sleeve 500 is attached to the upper surface of the reinforcing plate 400, and the sleeve 500 is welded with the reinforcing plate 400. In this way, the sleeve 500 and the reinforcing plate 400 are connected more tightly, and the force of the swing arm small shaft sleeve mounting bracket 300 can be effectively transmitted to the sleeve 500 through the reinforcing plate 400.

[0091] In a third aspect, the application also provides a vehicle, which comprises a vehicle body, a swing arm, and the auxiliary frame assembly. The sleeve 500 in the auxiliary frame assembly is connected with the vehicle body, and the swing arm is connected with the swing arm small shaft sleeve mounting bracket 300.

[0092] Through the above scheme, during the driving of the vehicle, the force of the swing arm is transmitted to the reinforcing plate 400 through the swing arm small shaft sleeve mounting bracket 300, and then transmitted to the vehicle body through the reinforcing plate 400 and the sleeve 500. In this way, the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200 do not bear the main force, so that the longitudinal beam upper plate 100 and the longitudinal beam lower plate 200 are prevented from cracking, and the stability of the entire auxiliary frame assembly is improved.

[0093] In some embodiments, the swing arm is connected with a swing arm small shaft sleeve, and the swing arm is connected with the swing arm small shaft sleeve mounting bracket 300 through the swing arm small shaft sleeve.

[0094] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary, and should not be understood as limiting the application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. A subframe assembly comprising: It includes: The upper plate of the longitudinal beam (100); The lower plate of the longitudinal beam (200) is arranged at the bottom of the upper plate of the longitudinal beam (100), and the installation cavity is formed between the upper plate of the longitudinal beam (100) and the lower plate of the longitudinal beam (200); The swing arm small shaft sleeve mounting bracket (300) is arranged in the installation cavity, and the top and bottom of the swing arm small shaft sleeve mounting bracket (300) are connected to the upper plate of the longitudinal beam (100) and the lower plate of the longitudinal beam (200) respectively; The reinforcing plate (400) is arranged in the installation cavity, and the reinforcing plate (400) is connected with the upper plate of the longitudinal beam (100) and the swing arm small shaft sleeve mounting bracket (300); The sleeve (500) penetrates the upper plate of the longitudinal beam (100), the sleeve (500) penetrates and connects the reinforcing plate (400), and the bottom of the sleeve (500) is located between the lower plate of the longitudinal beam (200) and the reinforcing plate (400).

2. The subframe assembly of claim 1, wherein The swing arm small shaft sleeve mounting bracket (300) includes: The mounting bracket upper plate (301) is connected with the upper plate of the longitudinal beam (100); The mounting bracket lower plate (302) is connected with the mounting bracket upper plate (301) and the lower plate of the longitudinal beam (200).

3. The subframe assembly of claim 2, wherein, The reinforcing plate (400) is connected with the mounting bracket upper plate (301).

4. The subframe assembly of claim 1, wherein, A first insertion hole is formed in the upper plate of the longitudinal beam (100), and the edge of the first insertion hole extends away from the lower plate of the longitudinal beam (200); the sleeve (500) is welded with the upper plate of the longitudinal beam (100) at the first insertion hole.

5. The subframe assembly of claim 1, wherein A second insertion hole is formed in the reinforcing plate (400), and the edge of the second insertion hole extends away from the upper plate of the longitudinal beam (100); the sleeve (500) is welded with the reinforcing plate (400) at the second insertion hole.

6. The subframe assembly of claim 1, wherein The reinforcing plate (400) has a bending part for fitting and connecting to the inner side wall of the upper plate of the longitudinal beam (100).

7. The subframe assembly of claim 1, wherein The upper plate of the longitudinal beam (100), the reinforcing plate (400) and the lower plate of the longitudinal beam (200) are arranged along the height direction of the subframe assembly; the insertion section of the sleeve (500) inserted into the upper plate of the longitudinal beam (100) and the reinforcing plate (400) is an insertion section; the axial direction of the insertion section is the same as the height direction of the subframe assembly.

8. A subframe assembly characterized by, It includes: The upper plate of the longitudinal beam (100); The lower plate of the longitudinal beam (200) is arranged at the bottom of the upper plate of the longitudinal beam (100), and the installation cavity is formed between the upper plate of the longitudinal beam (100) and the lower plate of the longitudinal beam (200); The swing arm small shaft sleeve mounting bracket (300) is arranged in the installation cavity, and the top and bottom of the swing arm small shaft sleeve mounting bracket (300) are connected to the upper plate of the longitudinal beam (100) and the lower plate of the longitudinal beam (200); A reinforcing plate (400) is arranged in the mounting cavity, and the reinforcing plate (400) is connected with the longitudinal beam upper plate (100) and the swing arm small shaft sleeve mounting support (300); A sleeve (500) penetrates through the longitudinal beam upper plate (100), and a bottom end of the sleeve (500) is connected to an upper surface of the reinforcing plate (400).

9. The subframe assembly of claim 8, wherein, The bottom end of the sleeve (500) is attached to the upper surface of the reinforcing plate (400), and the sleeve (500) is welded with the reinforcing plate (400).

10. A vehicle characterized by comprising: Comprise: A vehicle body, a swing arm, and a subframe assembly according to any one of claims 1-9; The sleeve (500) in the subframe assembly is connected with the vehicle body; The swing arm is connected with the swing arm small shaft sleeve mounting support (300).

Images