Rear floor beam frame assembly and vehicle

Abstract

The utility model discloses a rear floor beam frame assembly and a vehicle. The rear floor beam frame assembly comprises a rear floor, a floor beam frame body and a reinforcing assembly, the floor beam frame body and the rear floor are oppositely arranged, the floor beam frame body comprises a first cross beam, a second cross beam and two longitudinal beams, the first cross beam and the second cross beam are arranged in a spaced mode, and the two longitudinal beams are arranged in a spaced mode and connected to the first cross beam and the second cross beam respectively. The second cross beam and the longitudinal beam form a groove which is sunken relative to the rear floor; the reinforcing assembly is arranged in a groove in the connecting position of the second cross beam and the longitudinal beam and comprises an inclined supporting part, the inclined supporting part is provided with a supporting inclined face connected with the side wall and the bottom wall of the groove, and the supporting inclined face is obliquely arranged relative to the bottom wall of the groove. By means of the above implementation mode, the supporting slope provides support for the side wall of the groove, the risk that the side wall of the groove deforms when being stressed is relieved, then the rigidity of the connecting position of the second cross beam and the longitudinal beam is improved, and the NVH performance of the vehicle is improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a rear floor beam assembly and a vehicle. Background Art

[0002] With the continuous development of the domestic automobile industry, in order to meet the needs of lightweighting and cost reduction of automobiles, some automobiles have begun to adopt an integrated rear floor beam frame, and the subframe mounting point is generally located in the three-way area of the integrated rear floor beam frame. Due to the lack of vertical support on the side of the three-way area, the deformation of the side of the rear floor beam frame without support is larger when subjected to vertical force, and the stiffness of the rear subframe mounting point is low, resulting in the excitation of the road surface being more easily transmitted to the interior of the vehicle through the rear subframe mounting point when the vehicle is driving, which in turn leads to problems such as excessive noise inside the vehicle. Utility Model Content

[0003] The main purpose of this application is to provide a rear floor beam assembly and a vehicle, aiming to solve the above-mentioned technical problems existing in the prior art.

[0004] To solve the above problems, the present application provides a rear floor beam assembly, which includes a rear floor, a floor beam body and a reinforcement component. The floor beam body is arranged opposite to the rear floor, and the floor beam body includes a first cross beam and a second cross beam arranged at intervals, and two longitudinal beams arranged at intervals, each longitudinal beam is respectively connected to the first cross beam and the second cross beam, and the second cross beam and the longitudinal beam form a groove that is recessed relative to the rear floor; the reinforcement component is arranged in the groove at the connection between the second cross beam and the longitudinal beam, and the reinforcement component includes a diagonal bracing portion, which has a supporting inclined surface connected to the side wall and bottom wall of the groove, and the supporting inclined surface is inclined relative to the bottom wall of the groove.

[0005] In some embodiments, the diagonal support portion has a first supporting surface and a second supporting surface connected to each other, the first supporting surface abuts the side wall of the groove, and the second supporting surface abuts the bottom wall of the groove, and the supporting inclined surface is connected to the side wall of the groove through the first supporting surface and to the bottom wall of the groove through the second supporting surface.

[0006] In some embodiments, an angle between the supporting slope and the bottom wall of the groove is greater than or equal to 30 degrees and less than or equal to 60 degrees.

[0007] In some embodiments, the reinforcement assembly further includes a first reinforcement plate disposed in the groove, at least a portion of the first reinforcement plate extending in a direction in which the longitudinal beam extends, and at least a portion of the first reinforcement plate extending in a direction in which the second transverse beam extends.

[0008] In some embodiments, part of the first reinforcing plate is connected to the bottom wall of the groove, and at least part of the rest is connected to the side wall of the groove. The diagonal support portion is provided on the first reinforcing plate and is connected to the side wall and bottom wall of the groove through the first reinforcing plate.

[0009] In some embodiments, the reinforcement assembly also includes a support column, which is protruded on the side of the first reinforcement plate away from the bottom wall of the groove. The diagonal support portion is provided with a matching hole that passes through the supporting inclined surface. The diagonal support portion is sleeved on the support column through the matching hole so that the support column is connected to the supporting inclined surface through the matching hole.

[0010] In some embodiments, the reinforcement assembly further includes a second reinforcement plate, which is disposed on a side of the first reinforcement plate away from the bottom wall of the groove, and the support column is disposed on a side of the second reinforcement plate away from the first reinforcement plate.

[0011] In some embodiments, a portion of the second reinforcing plate is connected to the bottom wall of the groove through the first reinforcing plate, and at least a remaining portion is connected to the side wall of the groove through the first reinforcing plate.

[0012] In some embodiments, the reinforcement assembly also includes a welding portion, which is arranged along the circumference of the support column and is located at the connection between the support column and the second reinforcement plate, and at the connection between the support column and the mating hole, so that the support column is connected to the second reinforcement plate and the support slope respectively through the welding portion.

[0013] To solve the above problems, the present application also provides a vehicle, which includes the above-mentioned rear floor beam assembly.

[0014] Compared with the prior art, the present application provides a rear floor beam assembly, which includes a rear floor, a floor beam body and a reinforcement component. The floor beam body is arranged opposite to the rear floor. The floor beam body includes a first cross beam and a second cross beam arranged at intervals, and two longitudinal beams arranged at intervals. Each longitudinal beam is respectively connected to the first cross beam and the second cross beam, and the second cross beam and the longitudinal beam form a groove that is recessed relative to the rear floor; the reinforcement component is arranged in the groove at the connection between the second cross beam and the longitudinal beam, and the reinforcement component includes a diagonal bracing portion, which has a supporting inclined surface connected to the side wall and bottom wall of the groove, and the supporting inclined surface is inclined relative to the bottom wall of the groove. Through the above-mentioned embodiment, the second crossbeam and two longitudinal beams of the floor beam frame body form a groove that is recessed relative to the rear floor. The supporting inclined surface of the diagonal bracing portion is inclined relative to the bottom wall of the groove and connects the side walls and the bottom wall of the groove, thereby providing support for the side walls of the groove through the supporting inclined surface, alleviating the risk of deformation of the side walls of the groove when subjected to pressure, thereby improving the stiffness of the connection between the second crossbeam and the longitudinal beam, alleviating the risk of excessive noise caused by road excitation being transmitted to the vehicle interior, and improving the NVH (Noise, Vibration, Harshness) performance of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application;

[0017] Figure 2 is a schematic structural diagram of a rear floor beam assembly according to one or more embodiments of the present application;

[0018] Figure 3 is an exploded schematic diagram of a rear floor beam assembly according to one or more embodiments of the present application;

[0019] Figure 4 is a schematic diagram of the main structure of a floor beam frame of a rear floor beam frame assembly according to one or more embodiments of the present application;

[0020] Figure 5 is based on Figure 4 A partial enlarged schematic diagram of the floor beam frame body shown;

[0021] Figure 6 is based on Figure 5 The structural diagram of the floor beam frame body shown is a schematic diagram in which the diagonal bracing portion is hidden.

[0022] Figure numbers: vehicle 1; rear floor beam assembly 2; rear floor 10; floor beam body 20; first cross beam 21; second cross beam 22; longitudinal beam 23; groove 24; side wall 241; bottom wall 242; reinforcement assembly 30; diagonal bracing portion 31; supporting inclined surface 311; first supporting surface 312; second supporting surface 313; first reinforcing plate 32; second reinforcing plate 33; support column 34; mating hole 35; welding portion 36; angle A. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0025] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0028] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0029] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0031] With the continuous development of the domestic automobile industry, in order to meet the needs of lightweighting and cost reduction of automobiles, some automobiles have begun to adopt an integrated rear floor beam frame, and the subframe mounting point is generally located in the three-way area of the integrated rear floor beam frame. Due to the lack of vertical support on the side of the three-way area, the deformation of the side of the rear floor beam frame without support is larger when subjected to vertical force, and the stiffness of the rear subframe mounting point is low, resulting in the excitation of the road surface being more easily transmitted to the interior of the vehicle through the rear subframe mounting point when the vehicle is driving, which in turn leads to problems such as excessive noise inside the vehicle.

[0032] To solve the above problems, this application provides a vehicle, please refer to Figure 1 , Figure 1 is a schematic structural diagram of a vehicle according to one or more embodiments of the present application.

[0033] Vehicle 1 can be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle. Vehicle 1 can be a front-wheel drive vehicle, a rear-wheel drive vehicle, or a four-wheel drive vehicle. Vehicle 1 includes a rear floor beam assembly 2, which can be disposed at the rear of vehicle 1 to support and protect the rear of vehicle 1 while also improving the rigidity and stability of vehicle 1.

[0034] Please refer to Figure 2-Figure 6 , Figure 2 is a schematic structural diagram of a rear floor beam assembly according to one or more embodiments of the present application; Figure 3 is an exploded schematic diagram of a rear floor beam assembly according to one or more embodiments of the present application; Figure 4 is a schematic diagram of the main structure of a floor beam frame of a rear floor beam frame assembly according to one or more embodiments of the present application; Figure 5 is based on Figure 4 A partial enlarged schematic diagram of the floor beam frame body shown; Figure 6 is based on Figure 5 The structural diagram of the floor beam frame body shown is a schematic diagram in which the diagonal bracing portion is hidden.

[0035] To solve the above problems, the present application provides a rear floor beam assembly 2, which includes a rear floor 10, a floor beam body 20 and a reinforcement component 30. The floor beam body 20 is arranged opposite to the rear floor 10, and the floor beam body 20 includes a first cross beam 21 and a second cross beam 22 arranged at intervals, and two longitudinal beams 23 arranged at intervals, each longitudinal beam 23 is connected to the first cross beam 21 and the second cross beam 22, respectively, and the second cross beam 22 and the longitudinal beam 23 form a groove 24 that is recessed relative to the rear floor 10; the reinforcement component 30 is arranged in the groove 24 at the connection between the second cross beam 22 and the longitudinal beam 23, and the reinforcement component 30 includes a diagonal bracing portion 31, and the diagonal bracing portion 31 has a supporting inclined surface 311 connected to the side wall 241 and the bottom wall 242 of the groove 24, and the supporting inclined surface 311 is inclined relative to the bottom wall 242 of the groove 24.

[0036] The length of the vehicle 1 is defined as the front-to-back direction, and the width of the vehicle 1 is defined as the left-to-right direction. The rear floor member assembly 2 is disposed at the rear of the vehicle 1. The rear floor 10 may be the floor of the rear portion of the vehicle 1. The floor member body 20 is disposed opposite the rear floor 10 and is connected to the rear floor 10, thereby providing support for the rear floor 10. A first cross member 21 and a second cross member 22 are spaced apart, and two longitudinal members 23 are spaced apart. For example, the first cross member 21 and the second cross member 22 may be spaced apart in the front-to-back direction of the vehicle 1, and the two longitudinal members 23 may be spaced apart in the left-to-right direction of the vehicle 1. Each longitudinal member 23 is connected to the first cross member 21 and the second cross member 22, respectively. For example, one longitudinal member 23 may connect one end of the first cross member 21 in the left-to-right direction of the vehicle 1 and one end of the second cross member 22 in the left-to-right direction, respectively, while the other longitudinal member 23 may connect the other end of the first cross member 21 in the left-to-right direction and the other end of the second cross member 22 in the left-to-right direction. In some application scenarios, the floor beam frame body 20 is an integrally formed frame structure, that is, the first crossbeam 21, the second crossbeam 22, and the two longitudinal beams 23 are integrally formed and surround the frame structure. It can be understood that by integrally forming the floor beam frame body 20, the number of parts of the rear floor beam frame assembly 2 can be greatly reduced, and welding and assembly processes can be simplified, which is conducive to reducing production costs. The first crossbeam 21, the second crossbeam 22, and the longitudinal beams 23 are formed with grooves 24 that are recessed relative to the rear floor 10. It should be noted that the grooves 24 on the first crossbeam 21, the second crossbeam 22, and the longitudinal beams 23 are interconnected. For example, the grooves 24 on the first crossbeam 21 can extend in the direction of the first crossbeam 21, the grooves 24 on the second crossbeam 22 can extend in the direction of the second crossbeam 22, and the grooves 24 on the longitudinal beams 23 can extend in the direction of the longitudinal beams 23. The reinforcement component 30 is arranged in the groove 24 at the connection between the second cross beam 22 and the longitudinal beam 23, and is used to provide support for the connection between the second cross beam 22 and the longitudinal beam 23. It should be noted that in some application scenarios, the subframe of the vehicle 1 is installed and connected to the rear floor 10 beam frame through the connection between the second cross beam 22 and the longitudinal beam 23, so that the connection strength and stability between the subframe of the vehicle 1 and the rear floor 10 beam frame can be improved through the reinforcement component 30.The reinforcement component 30 includes a diagonal bracing portion 31, which has a supporting slope 311 connected to the side wall 241 and the bottom wall 242 of the groove 24. The supporting slope 311 is inclined relative to the bottom wall 242 of the groove 24. It can be understood that the supporting slope 311 can provide support for the side wall 241 of the groove 24. For example, the supporting slope 311 is respectively connected to the bottom wall 242 of the groove 24 and the side wall 241 located on the second cross beam 22. When the side wall 241 of the groove 24 located on the second cross beam 22 is subjected to pressure in a direction perpendicular to the bottom wall 242, the supporting slope 311 can share at least part of the pressure to provide support for the side wall 241 of the groove 24, thereby improving the stiffness of the connection between the second cross beam 22 and the longitudinal beam 23, and thereby improving the reliability of the floor beam frame body 20.

[0037] Through the above embodiment, the second crossbeam 22 and the two longitudinal beams 23 of the floor beam frame body 20 form a groove 24 that is recessed relative to the rear floor 10. The supporting inclined surface 311 of the diagonal bracing portion 31 is inclined relative to the bottom wall 242 of the groove 24 and connects the side walls 241 and the bottom wall 242 of the groove 24, so that the supporting inclined surface 311 provides support for the side walls 241 of the groove 24, thereby alleviating the risk of deformation of the side walls 241 of the groove 24 when subjected to pressure, thereby improving the stiffness of the connection between the second crossbeam 22 and the longitudinal beam 23, alleviating the risk of excessive noise caused by road excitation being transmitted to the vehicle interior, and improving the NVH (Noise, Vibration, Harshness) performance of the vehicle 1.

[0038] In some embodiments, the diagonal support portion 31 has a first supporting surface 312 and a second supporting surface 313 connected to each other, the first supporting surface 312 abuts against the side wall 241 of the groove 24, and the second supporting surface 313 abuts against the bottom wall 242 of the groove 24, and the supporting inclined surface 311 is connected to the side wall 241 of the groove 24 through the first supporting surface 312, and is connected to the bottom wall 242 of the groove 24 through the second supporting surface 313. The first supporting surface 312 can be abutted against and welded to the side wall 241 of the groove 24, and the second supporting surface 313 can be abutted against and welded to the bottom wall 242 of the groove 24. It can be understood that the first supporting surface 312 can further increase the contact area between the diagonal support portion 31 and the side wall 241 of the groove 24, and the second supporting surface 313 can further increase the contact area between the diagonal support portion 31 and the bottom wall 242 of the groove 24, thereby improving the connection stability between the supporting inclined surface 311 and the side wall 241 and bottom wall 242 of the groove 24, which is beneficial for the supporting inclined surface 311 to better provide support for the side wall 241 of the groove 24, thereby improving the stiffness of the connection between the second Henry and the longitudinal beam 23, and further improving the stability and reliability of the floor beam frame body 20.

[0039] In some embodiments, the angle A between the support slope 311 and the bottom wall 242 of the groove 24 is greater than or equal to 30 degrees and less than or equal to 60 degrees. The angle A between the support slope 311 and the bottom wall 242 of the groove 24 may refer to the angle A between the plane in which the support slope 311 is located and the plane in which the bottom wall 242 of the groove 24 is located. For example, the angle A may range from, but is not limited to, 30 degrees to 40 degrees, 40 degrees to 50 degrees, 50 degrees to 60 degrees, and so on. Specifically, the angle A may be 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees, 60 degrees, and so on. It should be noted that the steeper the support slope 311 relative to the bottom wall 242 of the groove 24, that is, the larger the angle A, the greater the support force of the support slope 311 on the sidewall 241 of the groove 24 in a direction perpendicular to the bottom wall 242 of the groove 24. Therefore, by setting a larger angle A, the supporting inclined surface 311 is more conducive to better providing support for the side wall 241 of the groove 24, further improving the stability and reliability of the floor beam frame body 20.

[0040] In some embodiments, the reinforcement assembly 30 further includes a first reinforcement plate 32 disposed in the groove 24 . At least a portion of the first reinforcement plate 32 extends in the direction in which the longitudinal beam 23 extends, and at least a portion of the first reinforcement plate 32 extends in the direction in which the second cross beam 22 extends. The first reinforcement plate 32 can be an integrally formed component. The first reinforcement plate 32 is disposed in the groove 24 and extends in the direction in which the longitudinal beam 23 and the second cross beam 22 extend. For example, the first reinforcement plate 32 can be welded and secured within the groove 24 and connected to the second cross beam 22 and the longitudinal beam 23 , respectively. Thus, the first reinforcement plate 32 improves the strength of the second cross beam 22 and the longitudinal beam 23 , thereby enhancing the reliability of the floor beam frame body 20 .

[0041] In some embodiments, a portion of the first reinforcing plate 32 is connected to the bottom wall 242 of the groove 24, while at least a portion of the remainder is connected to the side walls 241 of the groove 24. The diagonal bracing portion 31 is provided on the first reinforcing plate 32 and connected to the side walls 241 and bottom wall 242 of the groove 24 through the first reinforcing plate 32. The first reinforcing plate 32 can have the same shape as the groove 24 to better connect with the bottom wall 242 and side walls 241 of the groove 24. For example, the first reinforcing plate 32 can include a first bottom plate and a first side plate connected to the first bottom plate. The first reinforcing plate 32 can abut against the bottom wall 242 of the groove 24 through the first bottom plate and against the side walls 241 of the groove 24 through the first side plate, thereby providing support for the side walls 241 and bottom wall 242 of the groove 24 and further improving the reliability of the floor beam frame body 20. Furthermore, the first reinforcing plate 32 can conform to the bottom wall 242 and side walls 241 of the groove 24. The diagonal bracing portion 31 can be provided on the first reinforcing plate 32 and connected to the sidewalls 241 and bottom wall 242 of the groove 24 through the first reinforcing plate 32. This facilitates the diagonal bracing portion 31 and the first reinforcing plate 32 to cooperate in providing support for the groove 24, thereby increasing the rigidity of the second crossbeam 22 and the longitudinal beam 23. In some application scenarios, the groove 24, the first reinforcing plate 32, and the diagonal bracing portion 31 can be connected by three layers of welding, thereby further increasing the rigidity of the second crossbeam 22 and the longitudinal beam 23.

[0042] In some embodiments, the reinforcement assembly 30 further includes a support column 34, which is protruding from the side of the first reinforcement plate 32 facing away from the bottom wall 242 of the groove 24. The diagonal brace portion 31 defines a mating hole 35 that extends through the support slope 311. The diagonal brace portion 31 is sleeved onto the support column 34 through the mating hole 35, thereby connecting the support column 34 to the support slope 311 through the mating hole 35. The support column 34 may include, but is not limited to, a sleeve. The support column 34 is fixed to the side of the first reinforcement plate 32 facing away from the bottom wall 242 of the groove 24 and extends toward the side facing away from the bottom wall 242 of the groove 24, so as to be exposed through the mating hole 35 on the side of the support slope 311 facing away from the bottom wall 242 of the groove 24. The support column 34 is connected to the support slope 311 through the mating hole 35, thereby facilitating the support column 34 and cooperating with the support slope 311 to share pressure on the groove 24, thereby improving the support effect of the support slope 311 on the sidewall 241 of the groove 24, thereby enhancing the reliability of the floor beam frame body 20.

[0043] In some embodiments, the reinforcement assembly 30 further includes a second reinforcement plate 33, which is disposed on a side of the first reinforcement plate 32 facing away from the bottom wall 242 of the groove 24, and a support column 34 is disposed on a side of the second reinforcement plate 33 facing away from the first reinforcement plate 32. The second reinforcement plate 33 can be welded and fixed to the side of the first reinforcement plate 32 facing away from the bottom wall 242 of the groove 24, and the support column 34 is disposed on a side of the second reinforcement plate 33 facing away from the first reinforcement plate 32. This allows the support column 34 to be connected to the first reinforcement plate 32 via the second reinforcement plate 33, thereby improving the stability of the connection between the support column 34 and the first reinforcement plate 32. Furthermore, the second reinforcement plate 33 further increases the rigidity of the connection between the second cross beam 22 and the longitudinal beam 23, thereby alleviating the risk of deformation of the groove 24 at the connection between the second cross beam 22 and the longitudinal beam 23 under stress, and improving the reliability of the floor beam frame body 20.

[0044] In some embodiments, a portion of the second reinforcing plate 33 is connected to the bottom wall 242 of the groove 24 via the first reinforcing plate 32, while at least a portion of the second reinforcing plate 33 is connected to the side walls 241 of the groove 24 via the first reinforcing plate 32. The shape of the second reinforcing plate 33 can correspond to the shapes of the first reinforcing plate 32 and the groove 24, thereby better connecting to the bottom wall 242 and side walls 241 of the groove 24. For example, the second reinforcing plate 33 can include a second bottom plate and a second side plate connected to the second bottom plate. The second reinforcing plate 33 can abut against the first bottom plate of the first reinforcing plate 32 via the second bottom plate, and against the first side plate of the first reinforcing plate 32 via the second side plate, thereby providing support for the side walls 241 and bottom wall 242 of the groove 24 and further improving the reliability of the floor beam frame body 20. Furthermore, the second reinforcing plate 33 can be attached to the first bottom plate and first side plate of the first reinforcing plate 32.

[0045] In some embodiments, the reinforcement assembly 30 further includes a welding portion 36 disposed along the circumference of the support column 34 and located at the connection between the support column 34 and the second reinforcement plate 33, and at the connection between the support column 34 and the mating hole 35. The welding portion 36 connects the support column 34 to the second reinforcement plate 33 and the support slope 311, respectively. The end of the support column 34 facing the second reinforcement plate 33 can be welded to the second reinforcement plate 33 via the welding portion 36, while the end of the support column 34 facing away from the second reinforcement plate 33 can be welded to the support slope 311 via the welding portion 36. Thus, the welding portion 36 further enhances the connection stability between the support column 34, the second reinforcement plate 33, and the support slope 311, thereby improving the support effectiveness of the reinforcement assembly 30 on the floor beam frame body 20.

[0046] To sum up, in order to solve the above problems, the present application provides a rear floor beam assembly 2, which includes a rear floor 10, a floor beam body 20 and a reinforcement component 30. The floor beam body 20 is arranged opposite to the rear floor 10, and the floor beam body 20 includes a first cross beam 21 and a second cross beam 22 arranged at intervals, and two longitudinal beams 23 arranged at intervals, each longitudinal beam 23 is connected to the first cross beam 21 and the second cross beam 22 respectively, and the second cross beam 22 and the longitudinal beam 23 form a groove 24 that is recessed relative to the rear floor 10; the reinforcement component 30 is arranged in the groove 24 at the connection between the second cross beam 22 and the longitudinal beam 23, and the reinforcement component 30 includes a diagonal bracing portion 31, and the diagonal bracing portion 31 has a supporting inclined surface 311 connected to the side wall 241 and the bottom wall 242 of the groove 24, and the supporting inclined surface 311 is inclined relative to the bottom wall 242 of the groove 24. Through the above-described embodiment, the second cross member 22 and two longitudinal members 23 of the floor beam frame body 20 form a recessed groove 24 relative to the rear floor 10. The support slope 311 of the diagonal bracing portion 31 is inclined relative to the bottom wall 242 of the recess 24 and connects the side walls 241 and bottom wall 242 of the recess 24. Thus, the support slope 311 provides support for the side walls 241 of the recess 24, alleviating the risk of deformation of the side walls 241 of the recess 24 under pressure. This, in turn, increases the stiffness of the connection between the second cross member 22 and the longitudinal members 23, mitigates the risk of excessive noise caused by road excitation being transmitted to the vehicle interior, and improves the NVH performance of the vehicle 1. Compared to other rear floor beam frame assemblies 2, the rear floor beam frame assembly 2 provided in this application has higher strength and greater reliability, thereby improving the NVH performance of the vehicle 1.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A rear floor beam assembly, characterized in that: The rear floor beam assembly includes: rear floor; a floor beam frame body disposed opposite to the rear floor, the floor beam frame body comprising a first cross beam and a second cross beam spaced apart from each other, and two longitudinal beams spaced apart from each other, each longitudinal beam being connected to the first cross beam and the second cross beam, respectively, the second cross beam and the longitudinal beams forming a groove recessed relative to the rear floor; A reinforcing assembly is arranged in a groove at the connection between the second crossbeam and the longitudinal beam. The reinforcing assembly includes a diagonal bracing portion, which has a supporting inclined surface connected to the side wall and bottom wall of the groove. The supporting inclined surface is inclined relative to the bottom wall of the groove.

2. The rear floor beam assembly according to claim 1, characterized in that: The diagonal support portion has a first supporting surface and a second supporting surface connected to each other, the first supporting surface abuts against the side wall of the groove, and the second supporting surface abuts against the bottom wall of the groove, and the supporting inclined surface is connected to the side wall of the groove through the first supporting surface and to the bottom wall of the groove through the second supporting surface.

3. The rear floor beam assembly according to claim 2, characterized in that: An included angle between the supporting slope and the bottom wall of the groove is greater than or equal to 30 degrees and less than or equal to 60 degrees.

4. The rear floor beam assembly according to claim 1, characterized in that: The reinforcement assembly further includes a first reinforcement plate, which is disposed in the groove, at least a portion of the first reinforcement plate extending in a direction in which the longitudinal beam extends, and at least a portion of the first reinforcement plate extending in a direction in which the second cross beam extends.

5. The rear floor beam assembly according to claim 4, characterized in that: Part of the first reinforcing plate is connected to the bottom wall of the groove, and at least part of the rest is connected to the side wall of the groove. The diagonal support portion is provided on the first reinforcing plate and is connected to the side wall and bottom wall of the groove through the first reinforcing plate.

6. The rear floor beam assembly according to claim 4, characterized in that: The reinforcement assembly also includes a support column, which is protruding from the side of the first reinforcement plate away from the bottom wall of the groove. The oblique support portion is provided with a matching hole that passes through the supporting inclined surface. The oblique support portion is sleeved on the support column through the matching hole so that the support column is connected to the supporting inclined surface through the matching hole.

7. The rear floor beam assembly according to claim 6, characterized in that: The reinforcement assembly further includes a second reinforcement plate, which is arranged on a side of the first reinforcement plate away from the bottom wall of the groove, and the support column is arranged on a side of the second reinforcement plate away from the first reinforcement plate.

8. The rear floor beam assembly according to claim 7, characterized in that: Part of the second reinforcing plate is connected to the bottom wall of the groove through the first reinforcing plate, and at least part of the remaining part is connected to the side wall of the groove through the first reinforcing plate.

9. The rear floor beam assembly according to claim 7, characterized in that: The reinforcement assembly also includes a welding portion, which is arranged along the circumference of the support column and is located at the connection between the support column and the second reinforcement plate, and at the connection between the support column and the matching hole, so that the support column is connected to the second reinforcement plate and the support slope respectively through the welding portion.

10. A vehicle, characterized in that: The vehicle includes the rear floor beam assembly according to any one of claims 1 to 9.

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