Auxiliary frame assembly and vehicle

Abstract

The invention relates to the technical field of auxiliary frames, and discloses an auxiliary frame assembly and a vehicle, the auxiliary frame assembly comprises a cross beam body, a suspension support and two longitudinal beam assemblies, in the first direction, the cross beam body is fixedly connected between the two longitudinal beam assemblies, a first cavity is formed in the suspension support, the first cavity is provided with a first opening, and in the second direction, the cross beam body is fixedly connected between the two longitudinal beam assemblies; the projection of the first opening is located outside the cross beam body, the cross beam body comprises a cross beam upper plate and a cross beam lower plate, the cross beam upper plate is fixedly connected with the cross beam lower plate in a buckled mode, the suspension support is fixedly installed on the cross beam body, and in the second direction, part of the suspension support protrudes out of the cross beam lower plate; the upper beam plate, the lower beam plate and the suspension support jointly form a second cavity separated from the first cavity, and the first direction is perpendicular to the second direction. Therefore, a multi-cavity structure of the cross beam body and the suspension support is achieved, and the overall dynamic stiffness of the auxiliary frame assembly can be improved.

Description

Technical Field

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

[0002] As a force transmission structure connecting the suspension and the vehicle body, the subframe assembly can reduce the vibration and noise transmitted from the suspension to the vehicle body to a certain extent. However, with the rapid development of the automobile industry, the types of automobile power are becoming more and more complex, thus placing higher requirements on the reliability and performance of the subframe.

[0003] In the related art, the dynamic stiffness of the beam structure in the current subframe assembly is poor, which affects the overall dynamic stiffness of the subframe assembly, resulting in poor vibration isolation performance of the subframe assembly, and greatly reducing the NVH performance of the subframe assembly. Summary of the invention

[0004] The present application provides a subframe assembly and a vehicle, in which a crossbeam body in the subframe assembly is integrated with a suspension bracket, wherein a first cavity is formed in the suspension bracket, and the crossbeam body comprises a crossbeam upper plate and a crossbeam lower plate, and the side walls of the crossbeam upper plate and the side walls of the crossbeam lower plate are fastened and fixed up and down and together with the suspension bracket form a second cavity separated from the first cavity. Such an arrangement realizes a multi-cavity structure of the crossbeam body and the suspension bracket, which is beneficial to improving the dynamic stiffness of the suspension mounting point of the crossbeam body, thereby facilitating improving the overall dynamic stiffness of the subframe, and further improving the vibration isolation performance and NVH performance of the subframe.

[0005] In order to achieve the above objectives, the main technical solutions adopted in this application include:

[0006] In a first aspect, an embodiment of the present application provides a subframe assembly, comprising: a crossbeam body, a suspension bracket, and two longitudinal beam assemblies, wherein the crossbeam body is fixedly connected between the two longitudinal beam assemblies along a first direction;

[0007] A first cavity is formed in the suspension bracket, the first cavity has a first opening, and along the second direction, a projection of the first opening is located outside the crossbeam body;

[0008] The beam body includes an upper beam plate and a lower beam plate, which are buckled and fixedly connected with the lower beam plate. The suspension bracket is fixedly installed on the beam body, and along the second direction, part of the suspension bracket protrudes from the lower beam plate. The upper beam plate, the lower beam plate, and the suspension bracket together form a second cavity separated from the first cavity, wherein the first direction and the second direction are perpendicular to each other.

[0009] A subframe assembly is proposed in the first aspect of the embodiment of the present application, in which a crossbeam body is integrated with a suspension bracket, wherein a first cavity is formed in the suspension bracket, and the crossbeam body comprises an upper crossbeam plate and a lower crossbeam plate, and the side walls of the upper crossbeam plate and the side walls of the lower crossbeam plate are fastened and fixed up and down and together with the suspension bracket form a second cavity separated from the first cavity. In this way, a multi-cavity structure of the crossbeam body and the suspension bracket is realized. When the crossbeam body is subjected to external force, the two cavities formed by the suspension bracket and the crossbeam body can improve the deformation resistance of the crossbeam body at the suspension bracket, which is beneficial to improving the dynamic stiffness of the suspension mounting point of the crossbeam body, thereby helping to improve the overall dynamic stiffness of the subframe, and further improving the vibration isolation performance and NVH performance of the subframe.

[0010] Optionally, along the third direction, the width of the suspension bracket is smaller than the width of the beam body, wherein the third direction is perpendicular to both the first direction and the second direction.

[0011] In this arrangement, the side wall of the suspension bracket away from the first opening is separated from the side wall of the beam body away from the first opening, which is equivalent to reducing the volume of the second cavity at the connection between the suspension bracket and the beam body, which is beneficial to further improve the dynamic stiffness of the suspension mounting point of the beam body.

[0012] Optionally, the suspension bracket includes: a suspension upper bracket and a suspension lower bracket, a portion of the suspension upper bracket is fixedly mounted on the inner surface of the upper plate of the beam, the lower plate of the beam has a mounting groove, the suspension lower bracket is passed through the mounting groove and fixedly connected to the mounting groove, wherein a portion of the suspension lower bracket protrudes from the lower plate of the beam along the second direction, and the side wall of the suspension lower bracket is also buckled and fixed with the side wall of the suspension upper bracket to jointly form a first cavity.

[0013] With such an arrangement, two mutually unconnected cavities are formed on the crossbeam body and the suspension bracket, which is beneficial to improving the dynamic stiffness of the suspension mounting point of the crossbeam body. In addition, the suspension bracket has a simple structure and is easy to assemble, which is beneficial to saving production costs.

[0014] Optionally, the longitudinal beam assembly includes: a longitudinal beam body, the longitudinal beam body is fixedly connected to the cross beam body, a third cavity is formed in the longitudinal beam body, wherein the third cavity is not connected to the first cavity and the second cavity.

[0015] With such arrangement, the two longitudinal beam bodies and the cross beam body form three mutually unconnected cavity structures, which is beneficial to improving the overall rigidity and strength of the subframe assembly.

[0016] Optionally, along the extension direction of the longitudinal beam body, the longitudinal beam body has a first end and a second end, and in a direction from the first end to the second end, the longitudinal beam body is sequentially and spaced apart from each other to form a plurality of inducing recessed portions.

[0017] With such arrangement, when the vehicle collides in the second direction, assuming that the collision force propagates from the first end to the second end, the multiple induced recessed portions of the longitudinal beam body can collapse and absorb energy, thereby reducing the damage caused by the collision to the vehicle and personnel.

[0018] Optionally, the longitudinal beam assembly also includes: a connecting tube and a bushing. Along the extension direction of the longitudinal beam body, the longitudinal beam body has a first end and a second end. From the first end to the second end, the longitudinal beam body has a first vehicle body mounting hole and a second vehicle body mounting hole that are spaced apart. Part of the connecting tube is fixedly mounted in the first vehicle body mounting hole, and the bushing is passed through the second vehicle body mounting hole and fixedly connected to the longitudinal beam body. Both the connecting tube and the bushing are used for fixed connection to the vehicle body, wherein the bushing is closer to the passenger compartment of the vehicle body than the connecting tube.

[0019] Such a configuration helps reduce the vibration and impact on the passenger compartment through the bushing, thereby improving the passenger's driving experience. At the same time, the connecting pipe and the bushing can play a certain role in dividing the third cavity in the longitudinal beam body, which helps to improve the stability and rigidity of the longitudinal beam body, and then improve the overall rigidity and strength of the subframe assembly.

[0020] Optionally, the longitudinal beam assembly also includes: a first swing arm mounting bracket and a second swing arm mounting bracket, the first swing arm mounting bracket is fixed at the first end, the first swing arm mounting bracket is used to install the front swing arm, from the first end to the second end, the second swing arm mounting bracket is fixedly installed between the first body mounting hole and the second body mounting hole, and the second swing arm mounting bracket is used to install the rear swing arm.

[0021] Such an arrangement further improves the integrated design of the longitudinal beam body installation function.

[0022] Optionally, the longitudinal beam body has a first stabilizer bar connecting hole, the second swing arm mounting bracket has a second stabilizer bar connecting hole corresponding to the first stabilizer bar connecting hole, and the first stabilizer bar connecting hole and the second stabilizer bar connecting hole are both used for fixed connection with the stabilizer bar.

[0023] In this way, a stabilizer bar mounting point is integrated in the second swing arm mounting bracket, realizing an integrated design of the mounting function of the second swing arm mounting bracket, thereby eliminating the traditional stabilizer bar mounting bracket, which is beneficial to reducing the number of parts.

[0024] Optionally, the longitudinal beam body includes an upper longitudinal beam plate and a lower longitudinal beam plate, and the side wall of the upper longitudinal beam plate is buckled and fixed with the side wall of the lower longitudinal beam plate to jointly form a third cavity, wherein the upper longitudinal beam plate is fixedly connected to the upper transverse beam plate, and the lower longitudinal beam plate is fixedly connected to the lower transverse beam plate.

[0025] Optionally, the longitudinal beam assembly also includes: a support tube, the longitudinal beam upper plate has a first steering gear mounting portion, the longitudinal beam lower plate has a second steering gear mounting portion arranged opposite to the first steering gear mounting portion, from the first end to the second end, the first steering gear mounting portion and the second steering gear mounting portion are both arranged between the first vehicle body mounting hole and the first stabilizer bar connecting hole, the support tube is arranged in the third cavity, and the support tube is fixedly connected between the first steering gear mounting portion and the second steering gear mounting portion.

[0026] Such an arrangement further realizes the integration of the installation function of the longitudinal beam body, and the support tube can further divide the third cavity, which is beneficial to further improve the stability and rigidity of the longitudinal beam body, and further improve the overall rigidity and strength of the subframe assembly.

[0027] In a second aspect, an embodiment of the present application provides a vehicle, comprising the subframe assembly in the embodiment of the first aspect.

[0028] The vehicle proposed in the second aspect of the embodiment of the present application is provided with the above-mentioned subframe assembly, in which the crossbeam body in the subframe assembly is integrated with a suspension bracket, wherein a first cavity is formed in the suspension bracket, and the crossbeam body includes an upper crossbeam plate and a lower crossbeam plate, and the side walls of the upper crossbeam plate and the side walls of the lower crossbeam plate are fastened and fixed up and down and together with the suspension bracket form a second cavity separated from the first cavity. In this way, a multi-cavity structure of the crossbeam body and the suspension bracket is realized. When the crossbeam body is subjected to external force, the two cavities formed by the suspension bracket and the crossbeam body can improve the deformation resistance of the crossbeam body at the suspension bracket, which is beneficial to improve the dynamic stiffness of the suspension mounting point of the crossbeam body, thereby helping to improve the overall dynamic stiffness of the subframe, and further improve the vibration isolation performance and NVH performance of the subframe. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A top view of a subframe assembly provided in accordance with an embodiment of the present application;

[0031] Figure 2 A bottom view of a subframe assembly provided in accordance with an embodiment of the present application;

[0032] Figure 3 A three-dimensional diagram of a subframe assembly provided in accordance with an embodiment of the present application;

[0033] Figure 4An assembly diagram of a beam body and a suspension bracket provided for one embodiment of the present application;

[0034] Figure 5 A partial enlarged view of a subframe assembly provided in one embodiment of the present application;

[0035] Figure 6 A top view of a longitudinal beam body provided in accordance with an embodiment of the present application;

[0036] Figure 7 A three-dimensional view of a longitudinal beam upper plate provided for one embodiment of the present application;

[0037] Figure 8 A three-dimensional view of a lower plate of a longitudinal beam provided in accordance with an embodiment of the present application.

[0038] [Description of Reference Numerals]

[0039] Subframe assembly 100;

[0040] Beam body 1; beam upper plate 11; mounting hole 111; beam lower plate 12; mounting groove 121;

[0041] Suspension bracket 2; first cavity 21; first opening 211; suspension upper bracket 22; suspension lower bracket 23;

[0042] Side beam assembly 3; side beam body 31; first end 311; second end 312; induction recess 313; first vehicle body mounting hole 314; second vehicle body mounting hole 315; first stabilizer bar connecting hole 316; side beam upper plate 317; first steering gear mounting portion 3171; side beam lower plate 318; second steering gear mounting portion 3181; connecting pipe 32; bushing 33; first swing arm mounting bracket 34; second swing arm mounting bracket 35; second stabilizer bar connecting hole 351;

[0043] The first direction is X; the second direction is Y; the third direction is Z. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0045] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0046] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0047] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0048] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0049] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0050] As a force transmission structure connecting the suspension and the vehicle body, the subframe assembly can reduce the vibration and noise transmitted from the suspension to the vehicle body to a certain extent. However, with the rapid development of the automobile industry, the types of automobile power are becoming more and more complex, thus placing higher requirements on the reliability and performance of the subframe.

[0051] In the related art, the dynamic stiffness of the beam structure in the current subframe assembly is poor, which affects the overall dynamic stiffness of the subframe assembly, resulting in poor vibration isolation performance of the subframe assembly, and greatly reducing the NVH performance of the subframe assembly.

[0052] Based on this, the present application proposes a subframe assembly 100, in which a crossbeam body 1 is integrated with a suspension bracket 2, wherein a first cavity 21 is formed in the suspension bracket 2, and the crossbeam body 1 includes a crossbeam upper plate 11 and a crossbeam lower plate 12, and the side walls of the crossbeam upper plate 11 and the side walls of the crossbeam lower plate 12 are fastened and fixed up and down and together with the suspension bracket 2 form a second cavity separated from the first cavity 21. In this way, a multi-cavity structure of the crossbeam body 1 and the suspension bracket 2 is realized, which is beneficial to improve the dynamic stiffness of the suspension mounting point of the crossbeam body 1, thereby helping to improve the overall dynamic stiffness of the subframe, and further improving the vibration isolation performance and NVH performance of the subframe.

[0053] like Figure 1-Figure 8 As shown, the subframe assembly 100 according to the first embodiment of the present application includes: a crossbeam body 1, a suspension bracket 2 and two longitudinal beam assemblies 3.

[0054] Among them, along the first direction X, the beam body 1 is fixedly connected between the two longitudinal beam assemblies 3, a first cavity 21 is formed in the suspension bracket 2, the first cavity 21 has a first opening 211, and along the second direction Y, the projection of the first opening 211 is located outside the beam body 1, the beam body 1 includes a beam upper plate 11 and a beam lower plate 12, the beam upper plate 11 and the beam lower plate 12 are buckled and fixedly connected, the suspension bracket 2 is fixedly installed on the beam body 1, and along the second direction Y, part of the suspension bracket 2 protrudes from the beam lower plate 12, the beam upper plate 11, the beam lower plate 12, and the suspension bracket 2 jointly form a second cavity separated from the first cavity 21, wherein the first direction X and the second direction Y are perpendicular to each other.

[0055] Specifically, if Figure 1-Figure 3 As shown, the cross beam body 1 extends along the first direction X as a whole, and the two longitudinal beam components 3 are fixedly mounted on both sides of the cross beam body 1. Further, the subframe assembly 100 is arranged according to Figure 3 The placement direction shown is taken as an example for explanation, wherein a suspension bracket 2 is integrated and installed on the beam body 1, a first cavity 21 is formed in the suspension bracket 2, and one end of the first cavity 21 has an open first opening 211.

[0056] Furthermore, the beam body 1 includes an upper beam plate 11 and a lower beam plate 12 which are buckled together, wherein the side wall of the upper beam plate 11 and the side wall of the lower beam plate 12 together constitute the side wall of the beam body 1 of the beam body 1. It can be understood that in some embodiments of the present application, the direction of the first opening 211 is consistent with the direction of the side wall of the beam body 1 on one side of the beam body 1.

[0057] During the assembly process of the suspension bracket 2 and the beam body 1, part of the suspension bracket 2 is fixedly connected to the inner surface of the upper plate 11 of the beam, and part of the suspension bracket 2 is fixedly connected to the lower plate 12 of the beam. At the same time, along the second direction Y, it is ensured that the projection of the first opening 211 is located outside the beam body 1. For example, the first opening 211 is aligned with the side wall of the beam body 1. Further, a second cavity is formed by the upper plate 11 of the beam, the lower plate 12 of the beam, and the suspension bracket 2. It should be noted that the first cavity 21 and the second cavity are separated by the suspension bracket 2, and since the first opening 211 of the suspension bracket 2 is located outside the second cavity, the beam body 1 and the suspension bracket 2 jointly form two cavities that are not connected to each other. When the beam body 1 is subjected to external force, the two cavities formed by the suspension bracket 2 and the beam body 1 can improve the deformation resistance of the beam body 1 at the suspension bracket 2, thereby helping to improve the dynamic stiffness of the suspension mounting point of the beam body 1. Furthermore, along the second direction Y, part of the suspension bracket 2 protrudes from the lower plate 12 of the cross beam, that is, after the suspension bracket 2 and the cross beam body 1 are assembled, part of the suspension bracket 2 protrudes from the outside of the cross beam body 1 along the second direction Y. In this way, the volume of the first cavity 21 is increased, and the first cavity 21 can provide a better energy absorption effect, which is beneficial to further improve the dynamic stiffness of the cross beam body 1 at the suspension bracket 2, and further help to improve the overall dynamic stiffness, vibration isolation performance and NVH performance of the subframe.

[0058] It should be noted that a plurality of reinforcing ribs can be provided on the outer surfaces of the upper beam plate 11 and the lower beam plate 12, and the extension direction of the reinforcing ribs is consistent with the extension direction of the upper beam plate 11 and the lower beam plate 12. This is beneficial to further improve the structural strength of the beam body 1, thereby further improving the dynamic stiffness of the beam body 1.

[0059] The subframe assembly 100 proposed in the first aspect of the embodiment of the present application, wherein a crossbeam body 1 in the subframe assembly 100 is integrated with a suspension bracket 2, wherein a first cavity 21 is formed in the suspension bracket 2, and the crossbeam body 1 includes a crossbeam upper plate 11 and a crossbeam lower plate 12, and the side walls of the crossbeam upper plate 11 and the side walls of the crossbeam lower plate 12 are fastened and fixed up and down and together with the suspension bracket 2 form a second cavity separated from the first cavity 21. Such an arrangement realizes a multi-cavity structure of the crossbeam body 1 and the suspension bracket 2, which is beneficial to improving the dynamic stiffness of the suspension mounting point of the crossbeam body 1, thereby facilitating improving the overall dynamic stiffness of the subframe, and further improving the vibration isolation performance and NVH performance of the subframe.

[0060] In some embodiments of the present application, Figure 1 and Figure 2 As shown, along the third direction Z, the width of the suspension bracket 2 is smaller than the width of the beam body 1, wherein the third direction Z is perpendicular to both the first direction X and the second direction Y. In this arrangement, since the width of the suspension bracket 2 is smaller than the width of the beam body 1, the side wall of the suspension bracket 2 away from the first opening 211 is spaced apart from the side wall of the beam body 1 away from the first opening 211, which is equivalent to reducing the volume of the second cavity at the connection between the suspension bracket 2 and the beam body 1, which is beneficial to further improve the dynamic stiffness of the suspension installation point of the beam body.

[0061] In some embodiments of the present application, Figure 3 and Figure 4 As shown, the suspension bracket 2 includes: a suspension upper bracket 22 and a suspension lower bracket 23, a portion of the suspension upper bracket 22 is fixedly mounted on the inner surface of the crossbeam upper plate 11, the crossbeam lower plate 12 has a mounting groove 121, the suspension lower bracket 23 is passed through the mounting groove 121 and is fixedly connected to the mounting groove 121, wherein a portion of the suspension lower bracket 23 protrudes from the crossbeam lower plate 12 along the second direction Y, and the side wall of the suspension lower bracket 23 is also buckled and fixed with the side wall of the suspension upper bracket 22 to jointly form a first cavity 21.

[0062] Specifically, the suspension bracket 2 includes an upper suspension bracket 22 and a lower suspension bracket 23 which are relatively arranged along the second direction Y, wherein the side wall of the upper suspension bracket 22 is buckled and fixed with the side wall of the lower suspension bracket 23 to jointly form a first cavity 21 open at one end. Furthermore, the upper plate 11 of the beam has a mounting hole 111, and the lower plate 12 of the beam has a mounting groove 121. When the upper suspension bracket 22 and the lower suspension bracket 23 are assembled, the upper suspension bracket 22 is fixedly connected to the inner surface of the upper plate 11 of the beam and the mounting hole 111 is covered, and the lower suspension bracket 23 is passed through the mounting groove 121 and fixedly connected to the mounting groove 121. At the same time, it is ensured that part of the lower suspension bracket 23 protrudes from the lower plate 12 of the beam along the second direction Y, thereby forming two cavities that are not connected to each other on the beam body 1 and the suspension bracket 2, which is beneficial to improving the dynamic stiffness of the suspension mounting point of the beam body 1, and the suspension bracket 2 has a simple structure and is easy to assemble, which is beneficial to saving production costs.

[0063] In some embodiments of the present application, Figure 1 and Figure 2 As shown, the longitudinal beam assembly 3 includes: a longitudinal beam body 31, the longitudinal beam body 31 is fixedly connected to the cross beam body 1, and a third cavity is formed in the longitudinal beam body 31, wherein the third cavity is not connected to the first cavity 21 and the second cavity. Specifically, each longitudinal beam assembly 3 includes a longitudinal beam body 31, such as Figure 1 and Figure 2 As shown, the two longitudinal beam bodies 31 are fixedly installed on both sides of the cross beam body 1, and a third cavity is formed in the longitudinal beam body 31. With this arrangement, the two longitudinal beam bodies 31 and the cross beam body 1 form three cavity structures that are not connected to each other, which is beneficial to improving the overall stiffness and strength of the subframe assembly 100.

[0064] In some embodiments of the present application, Figure 6 and Figure 7 As shown, along the extension direction of the longitudinal beam body 31 , the longitudinal beam body 31 has a first end 311 and a second end 312 , and in a direction from the first end 311 to the second end 312 , the longitudinal beam body 31 is sequentially and spaced apart from a plurality of inducing recessed portions 313 .

[0065] Specifically, in the extension direction of the longitudinal beam body 31, the longitudinal beam body 31 has a first end 311 and a second end 312 opposite to each other. From the first end 311 to the second end 312, the longitudinal beam body 31 is sequentially and spaced apart with a plurality of induction recesses 313. With such arrangement, when a vehicle collides, assuming that the collision force propagates from the first end 311 to the second end 312, the plurality of induction recesses 313 of the longitudinal beam body 31 can collapse and absorb energy, thereby reducing the damage caused by the collision to the vehicle and personnel. It should be noted that, from the first end 311 to the second end 312, the cross section of the front half of the longitudinal beam body 31 is smaller than the cross section of the rear half of the longitudinal beam body 31, thereby ensuring that the front half of the longitudinal beam body 31 undergoes a large deformation during a collision, while the rear half of the longitudinal beam body 31 undergoes a small deformation or substantially no deformation, thereby improving the protection capability for passengers.

[0066] In some embodiments of the present application, Figure 1-Figure 3 and Figure 5 As shown, the longitudinal beam assembly 3 also includes: a connecting pipe 32 and a bushing 33. Along the extension direction of the longitudinal beam body 31, the longitudinal beam body 31 has a first end 311 and a second end 312. From the first end 311 to the second end 312, the longitudinal beam body 31 has a first vehicle body mounting hole 314 and a second vehicle body mounting hole 315 that are spaced apart. A portion of the connecting pipe 32 is fixedly mounted in the first vehicle body mounting hole 314. The bushing 33 is passed through the second vehicle body mounting hole 315 and is fixedly connected to the longitudinal beam body 31. The connecting pipe 32 and the bushing 33 are both used for fixed connection with the vehicle body, wherein the bushing 33 is closer to the passenger compartment of the vehicle body than the connecting pipe 32.

[0067] Specifically, two vehicle body mounting points are integrated on the longitudinal beam body 31, namely a first vehicle body mounting hole 314 and a second vehicle body mounting hole 315, wherein the first vehicle body mounting hole 314 is fixedly connected to the vehicle body through a connecting pipe 32, and the second vehicle body mounting hole 315 is fixedly connected to the vehicle body through a bushing 33. It should be noted that the connecting pipe 32 is rigidly connected to the vehicle body, and since the bushing 33 is an elastic part, the bushing 33 is flexibly connected to the vehicle body. At the same time, the bushing 33 is closer to the passenger compartment of the vehicle body than the connecting pipe 32. Such an arrangement is conducive to reducing the vibration and impact on the passenger compartment through the bushing 33, thereby improving the driving experience of the passengers.

[0068] In some embodiments of the present application, part of the connecting tube 32 is fixedly installed in the first vehicle body mounting hole 314, and the bushing 33 is inserted into the second vehicle body mounting hole 315. With such a configuration, the connecting tube 32 and the bushing 33 can play a certain role in dividing the third cavity in the longitudinal beam body 31, thereby facilitating the improvement of the stability and rigidity of the longitudinal beam body 31, and further improving the overall rigidity and strength of the subframe assembly 100.

[0069] In some embodiments of the present application, the first vehicle body mounting hole 314 has a flange, and the first vehicle body mounting hole 314 is welded to the connecting tube 32 through the flange. In this way, the welding contact area between the connecting tube 32 and the first vehicle body mounting hole 314 is increased by surface contact welding, which is beneficial to improve the connection strength between the connecting tube 32 and the longitudinal beam body 31, and avoid defects such as welding detachment between the connecting tube 32 and the longitudinal beam body 31.

[0070] In some embodiments of the present application, Figure 1-Figure 3 As shown, the longitudinal beam assembly 3 also includes: a first swing arm mounting bracket 34 and a second swing arm mounting bracket 35, the first swing arm mounting bracket 34 is fixedly arranged at the first end 311, the first swing arm mounting bracket 34 is used to mount the front swing arm, and the second swing arm mounting bracket 35 is fixedly installed between the first body mounting hole 314 and the second body mounting hole 315 from the first end 311 to the second end 312, and the second swing arm mounting bracket 35 is used to mount the rear swing arm. In other words, the longitudinal beam body 31 is also integrated with the front swing arm and the rear swing arm mounting points, that is, the longitudinal beam body 31 is connected to the front swing arm through the first swing arm mounting bracket 34, and the longitudinal beam body 31 is also connected to the rear swing arm through the second swing arm mounting bracket 35. Such an arrangement further improves the integrated design of the installation function of the longitudinal beam body 31. It should be noted that the second swing arm mounting bracket 35 is provided with reinforcing ribs and step surfaces, and the reinforcing ribs and step surfaces are conducive to improving the self strength of the second swing arm mounting bracket 35, thereby facilitating the improvement of the connection strength between the longitudinal beam body 31 and the rear swing arm.

[0071] In some embodiments of the present application, Figure 1 and Figure 6 As shown, the longitudinal beam body 31 has two first stabilizer bar connection holes 316, and the second swing arm mounting bracket 35 has two second stabilizer bar connection holes 351 which are arranged one-to-one corresponding to the first stabilizer bar connection holes 316. The first stabilizer bar connection hole 316 and the second stabilizer bar connection hole 351 are both used for fixed connection with the stabilizer bar.

[0072] Specifically, the second swing arm mounting bracket 35 is assembled with the first stabilizer bar connecting hole 316 through the second stabilizer bar connecting hole 351, and is fixedly connected to the first stabilizer bar connecting hole 316 and the second stabilizer bar connecting hole 351 through the stabilizer bar. This not only realizes the fixed connection between the second swing arm mounting bracket 35 and the longitudinal beam body 31, but also integrates the stabilizer bar mounting point on the second swing arm mounting bracket 35, realizing the integrated design of the installation function of the second swing arm mounting bracket 35, thereby eliminating the traditional stabilizer bar mounting bracket, which is beneficial to reducing the number of parts.

[0073] In some embodiments of the present application, Figure 6-Figure 8As shown, the longitudinal beam body 31 includes a longitudinal beam upper plate 317 and a longitudinal beam lower plate 318, and the side wall of the longitudinal beam upper plate 317 is fastened and fixed with the side wall of the longitudinal beam lower plate 318 to form a third cavity together, wherein the longitudinal beam upper plate 317 is fixedly connected to the cross beam upper plate 11, and the longitudinal beam lower plate 318 is fixedly connected to the cross beam lower plate 12. That is to say, the longitudinal beam body 31 includes a longitudinal beam upper plate 317 and a longitudinal beam lower plate 318 that are relatively arranged. The side wall of the longitudinal beam upper plate 317 and the side wall of the longitudinal beam lower plate 318 are buckled and fixed up and down to form a third cavity together. Furthermore, the longitudinal beam upper plate 317 is fixedly connected to the cross beam upper plate 11, and the longitudinal beam lower plate 318 is fixedly connected to the cross beam lower plate 12. The connection between the longitudinal beam upper plate 317 and the cross beam upper plate 11 is an arc structure as a whole, and the connection between the longitudinal beam lower plate 318 and the cross beam lower plate 12 is an arc structure as a whole. Such a configuration is conducive to improving the conduction of the collision force between the longitudinal beam body 31 and the cross beam body 1, so that the collision force is more dispersed.

[0074] In some embodiments of the present application, the second swing arm mounting bracket 35 includes a first mounting plate, a second mounting plate and a connecting plate, wherein the connecting plate is connected between the first mounting plate and the second mounting plate, the first mounting plate is fixedly connected to the longitudinal beam upper plate 317, and the second mounting plate is fixedly connected to the longitudinal beam lower plate 318. Such an arrangement is beneficial to improving the connection strength between the second swing arm mounting bracket 35 and the longitudinal beam body 31.

[0075] In some embodiments of the present application, the longitudinal beam assembly 3 also includes: a support tube, the longitudinal beam upper plate 317 has two first steering gear mounting portions 3171, the longitudinal beam lower plate 318 has two second steering gear mounting portions 3181 which are arranged one-to-one corresponding to the first steering gear mounting portions 3171, and from the first end 311 to the second end 312, the first steering gear mounting portion 3171 and the second steering gear mounting portion 3181 are both arranged between the first vehicle body mounting hole 314 and the first stabilizer bar connecting hole 316, the support tube is arranged in the third cavity, and the support tube is fixedly connected between the first steering gear mounting portion 3171 and the second steering gear mounting portion 3181.

[0076] Specifically, the longitudinal beam upper plate 317 is designed as a large plane as a whole, the first steering gear mounting portion 3171 is constructed as a mounting boss, and the center of the first steering gear mounting portion 3171 has a first assembly hole. Furthermore, the longitudinal beam lower plate 318 has a second steering gear mounting portion 3181 arranged opposite to the first steering gear mounting portion 3171, and the second steering gear mounting portion 3181 has a second assembly hole arranged opposite to the first mounting hole 111. With such an arrangement, the steering gear can be fixedly connected to the first steering gear mounting portion 3171 and the second steering gear mounting portion 3181 by means of bolts and nuts. For example, the bolt passes through the mounting portion of the steering gear and then passes through the first assembly hole and the second assembly hole in sequence, and then the bolt is tightened by the nut to achieve a fixed connection between the steering gear and the longitudinal beam body 31, thereby further realizing the integration of the installation function of the longitudinal beam body 31.

[0077] Furthermore, the longitudinal beam assembly 3 also includes a support tube, which is arranged in the third cavity and fixedly connected between the first steering gear mounting portion 3171 and the second steering gear mounting portion 3181. It can be understood that the through hole of the support tube is opposite to the first assembly hole and the second assembly hole, so that the bolt can pass through the support tube, and the support tube can further divide the third cavity, which is beneficial to further improve the stability and rigidity of the longitudinal beam body 31, and further improve the overall rigidity and strength of the subframe assembly 100.

[0078] The vehicle according to the first aspect of the present application includes the subframe assembly 100 in the first aspect of the present application.

[0079] The vehicle proposed in the second aspect of the embodiment of the present application is provided with the above-mentioned subframe assembly 100, in which the crossbeam body 1 in the subframe assembly 100 is integrated with a suspension bracket 2, wherein a first cavity 21 is formed in the suspension bracket 2, and the crossbeam body 1 includes a crossbeam upper plate 11 and a crossbeam lower plate 12, and the side walls of the crossbeam upper plate 11 and the side walls of the crossbeam lower plate 12 are fastened and fixed up and down and together with the suspension bracket 2 form a second cavity separated from the first cavity 21. In this way, a multi-cavity structure of the crossbeam body 1 and the suspension bracket 2 is realized. When the crossbeam body 1 is subjected to external force, the two cavities formed by the suspension bracket 2 and the crossbeam body 1 can improve the deformation resistance of the crossbeam body 1 at the suspension bracket 2, which is beneficial to improve the dynamic stiffness of the suspension mounting point of the crossbeam body 1, thereby helping to improve the overall dynamic stiffness of the subframe, and further improve the vibration isolation performance and NVH performance of the subframe.

[0080] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0081] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0082] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

[0083] Although the embodiments of the present application have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A subframe assembly, characterized in that: include: A crossbeam body, a suspension bracket and two longitudinal beam assemblies, wherein the crossbeam body is fixedly connected between the two longitudinal beam assemblies along a first direction; A first cavity is formed in the suspension bracket, the first cavity has a first opening, and along the second direction, a projection of the first opening is located outside the crossbeam body; The beam body includes an upper beam plate and a lower beam plate, the upper beam plate is fixedly connected to the lower beam plate by snapping, the suspension bracket is fixedly installed on the beam body, and along the second direction, part of the suspension bracket protrudes from the lower beam plate, the upper beam plate, the lower beam plate and the suspension bracket jointly form a second cavity separated from the first cavity, wherein the first direction is perpendicular to the second direction.

2. The subframe assembly according to claim 1, characterized in that: Along the third direction, the width of the suspension bracket is smaller than the width of the beam body, wherein the third direction is perpendicular to both the first direction and the second direction.

3. The subframe assembly according to claim 1, characterized in that: The suspension bracket includes: a suspension upper bracket and a suspension lower bracket, wherein a portion of the suspension upper bracket is fixedly mounted on the inner surface of the upper plate of the beam, and the lower plate of the beam has a mounting groove, and the suspension lower bracket is passed through the mounting groove and fixedly connected to the mounting groove, wherein a portion of the suspension lower bracket protrudes from the lower plate of the beam along the second direction, and the side wall of the suspension lower bracket is also buckled and fixed with the side wall of the suspension upper bracket to jointly form the first cavity.

4. The subframe assembly according to claim 1, characterized in that: The longitudinal beam assembly includes: a longitudinal beam body, the longitudinal beam body is fixedly connected to the cross beam body, a third cavity is formed in the longitudinal beam body, wherein the third cavity is not connected with the first cavity and the second cavity.

5. The subframe assembly according to claim 4, characterized in that: Along the extension direction of the longitudinal beam body, the longitudinal beam body has a first end and a second end. In a direction from the first end to the second end, the longitudinal beam body is sequentially and spaced apart from each other to form a plurality of inducing recessed portions.

6. The subframe assembly according to claim 4, characterized in that: The longitudinal beam assembly also includes: a connecting pipe and a bushing. Along the extension direction of the longitudinal beam body, the longitudinal beam body has a first end and a second end. From the first end to the second end, the longitudinal beam body has a first vehicle body mounting hole and a second vehicle body mounting hole that are spaced apart. A portion of the connecting pipe is fixedly mounted in the first vehicle body mounting hole. The bushing is passed through the second vehicle body mounting hole and fixedly connected to the longitudinal beam body. The connecting pipe and the bushing are both used for fixed connection to the vehicle body, wherein the bushing is closer to the passenger compartment of the vehicle body than the connecting pipe.

7. The subframe assembly according to claim 6, characterized in that: The longitudinal beam assembly also includes: a first swing arm mounting bracket and a second swing arm mounting bracket, the first swing arm mounting bracket is fixedly arranged at the first end, the first swing arm mounting bracket is used to mount the front swing arm, and from the first end to the second end, the second swing arm mounting bracket is fixedly arranged between the first body mounting hole and the second body mounting hole, and the second swing arm mounting bracket is used to mount the rear swing arm.

8. The subframe assembly according to claim 7, characterized in that: The longitudinal beam body has a first stabilizer bar connecting hole, and the second swing arm mounting bracket has a second stabilizer bar connecting hole arranged corresponding to the first stabilizer bar connecting hole, and the first stabilizer bar connecting hole and the second stabilizer bar connecting hole are both used for fixed connection with the stabilizer bar.

9. The subframe assembly according to claim 8, characterized in that: The longitudinal beam body includes an upper longitudinal beam plate and a lower longitudinal beam plate, and the side wall of the upper longitudinal beam plate is buckled and fixed with the side wall of the lower longitudinal beam plate to jointly form the third cavity, wherein the upper longitudinal beam plate is fixedly connected to the upper cross beam plate, and the lower longitudinal beam plate is fixedly connected to the lower cross beam plate.

10. The subframe assembly according to claim 9, characterized in that: The longitudinal beam assembly also includes: a support tube, the longitudinal beam upper plate has a first steering gear mounting portion, the longitudinal beam lower plate has a second steering gear mounting portion arranged opposite to the first steering gear mounting portion, and from the first end to the second end, the first steering gear mounting portion and the second steering gear mounting portion are both arranged between the first vehicle body mounting hole and the first stabilizer bar connecting hole, the support tube is arranged in the third cavity, and the support tube is fixedly connected between the first steering gear mounting portion and the second steering gear mounting portion.

11. A vehicle, characterized in that: It comprises a subframe assembly according to any one of claims 1-10.

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