Floor frame assembly and vehicle

Abstract

The application discloses a floor frame assembly and a vehicle. The floor frame assembly comprises two floor longitudinal beams, a first cross beam, a second cross beam and a reinforcing longitudinal beam. The two floor longitudinal beams extend along a first direction and are spaced apart along a second direction. The first cross beam and the second cross beam both extend along the second direction and are spaced apart along the first direction. The two ends of the first cross beam and the second cross beam are connected to one floor longitudinal beam respectively. The first cross beam and the second cross beam have a height difference along a third direction. The reinforcing longitudinal beam extends along the first direction and is connected to the first cross beam and the second cross beam. The connection between the reinforcing longitudinal beam and the first cross beam and / or the second cross beam is curved. Thus, the first cross beam has a height difference with the second cross beam along the third direction. The connection between the reinforcing longitudinal beam and the first cross beam and / or the second cross beam is curved, so that a collapse area is formed between the reinforcing longitudinal beam and the first cross beam and the second cross beam, and the impact performance of the floor frame assembly is improved.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and in particular to a floor frame assembly and vehicle. Background Technology

[0002] With the rapid development of the automotive industry and technology, people have increasingly higher requirements for automotive design, especially the seemingly contradictory factors of safety and lightweighting. The automotive floor is one of the important components of the lower body, mainly used to bear the weight of various internal parts of the vehicle, and also to transmit and release the impact forces it receives.

[0003] However, in the current technology, the installation of the floor frame structure of automobiles is complicated, and the impact performance of the floor frame needs to be improved. Utility Model Content

[0004] The main objective of this application is to provide a floor frame assembly and vehicle that addresses the aforementioned technical problems existing in the prior art.

[0005] To address the aforementioned problems, this application provides a floor frame assembly comprising two floor longitudinal beams, a first crossbeam, a second crossbeam, and at least one reinforcing longitudinal beam. The two floor longitudinal beams extend along a first direction and are spaced apart in a second direction, wherein the first and second directions intersect. The first crossbeam extends along the second direction, is located between the two floor longitudinal beams, and connects to both beams. The second crossbeam extends along the second direction and is spaced apart from the first crossbeam in the first direction, is located between the two floor longitudinal beams, and connects to both beams. At least one reinforcing longitudinal beam extends along the first direction and connects to both the first and second crossbeams, wherein the second crossbeam has a height difference from the first crossbeam in a third direction, and the first, second, and third directions intersect each other. The connection between the reinforcing longitudinal beam and the first and / or second crossbeams is bent.

[0006] In some embodiments, the reinforcing longitudinal beam includes a main body and a connecting part. The main body is at the same level in a first direction. One end of the main body is connected to a first crossbeam. One end of the connecting part is connected to the other end of the main body. The other end of the connecting part is bent toward the first crossbeam and connected to the first crossbeam through the connecting part.

[0007] In some embodiments, the reinforcing longitudinal beam includes a main body and a connecting part, wherein the distance between the end of the main body near the first crossbeam and the second crossbeam in a third direction is greater than the distance between the other end of the main body near the second crossbeam and the second crossbeam.

[0008] In some embodiments, the connecting portion includes two connecting contact angles located at one end of the connecting portion away from the main body portion, and the two connecting contact angles are spaced apart in a second direction.

[0009] In some embodiments, the main body includes a main plate and two connecting plates. The portion of the main plate corresponding to the second crossbeam is spaced apart from the second crossbeam in a third direction. The two connecting plates are respectively connected to one side of the main plate in a second direction. One end of the two connecting plates overlaps the second crossbeam, and the other end of the two connecting plates is respectively connected to a connecting contact angle.

[0010] In some embodiments, the main body includes two reinforcing edges, which are respectively connected to a connecting plate on the side away from the main body in a second direction and extend to the connecting contact angle. The reinforcing edges protrude from the connecting plate and the connecting contact angle away from the side of the first crossbeam.

[0011] In some embodiments, there are two reinforcing longitudinal beams, which are spaced apart in the second direction and spaced apart from the adjacent floor longitudinal beams.

[0012] In some embodiments, two reinforcing longitudinal beams are symmetrically arranged, and the two connecting contact angles of each reinforcing longitudinal beam are spaced apart in a first direction.

[0013] In some embodiments, in the same reinforcing longitudinal beam, the connection points of the two connecting plates with their corresponding connecting contact angles are bent, and the bending curvature of the connecting plate connected to the connecting contact angle closer to the second crossbeam is smaller than that of the other connecting plate.

[0014] To address the aforementioned problems, this application provides a vehicle that includes the aforementioned floor frame assembly.

[0015] Compared with the prior art, the floor frame assembly provided in this application includes two floor longitudinal beams, a first crossbeam, a second crossbeam, and at least one reinforcing longitudinal beam. The two floor longitudinal beams extend along a first direction and are spaced apart in a second direction, wherein the first and second directions intersect. The first crossbeam extends along the second direction, is located between the two floor longitudinal beams, and connects to both floor longitudinal beams. The second crossbeam extends along the second direction and is spaced apart from the first crossbeam in the first direction, is located between the two floor longitudinal beams, and connects to both floor longitudinal beams. At least one reinforcing longitudinal beam extends along the first direction and connects to both the first and second crossbeams, wherein the second crossbeam has a height difference from the first crossbeam in a third direction, and the first, second, and third directions intersect each other. The connection between the reinforcing longitudinal beam and the first and / or second crossbeams is curved. In the above-described embodiment, the first crossbeam has a height difference with the second crossbeam in the third direction. The two ends of the reinforcing longitudinal beam are respectively connected to the first crossbeam and the second crossbeam in the first direction. The reinforcing longitudinal beam is bent at the connection with the first crossbeam and / or the second crossbeam to form a collapse area between the reinforcing longitudinal beam and the first crossbeam and the second crossbeam, which can improve the impact performance of the floor frame assembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a structure of an embodiment of the floor frame assembly provided in this application;

[0018] Figure 2 yes Figure 1 A first-view structural schematic diagram of an embodiment of the reinforcing longitudinal beam shown;

[0019] Figure 3 yes Figure 1 A second-view structural schematic diagram of an embodiment of the reinforcing longitudinal beam shown.

[0020] Reference numerals: Floor frame assembly 10; Reinforcing longitudinal beam 100; Main body 110; Main body plate 111; Connecting plate 112; Reinforcing edge 113; Connecting part 120; Connecting contact angle 121; Floor longitudinal beam 200; First crossbeam 300; Second crossbeam 400; First direction X; Second direction Y; Third direction Z. Detailed Implementation

[0021] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0024] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0025] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0026] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0027] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0028] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0029] With the rapid development of the automotive industry and technology, people have increasingly higher requirements for automotive design, especially the seemingly contradictory factors of safety and lightweighting. The automotive floor is a crucial component of the lower body structure, primarily responsible for bearing the weight of various internal components and transmitting and releasing impact forces. However, current automotive floor frame structures are complex to install, and their impact performance needs improvement.

[0030] To address the related technical problems, this application provides a vehicle that includes a floor frame assembly capable of bearing the weight of the vehicle body and absorbing impact forces.

[0031] To address the related technical problems, this application provides a floor frame assembly, see [link to relevant documentation]. Figure 1 , Figure 1 This is a structural schematic diagram of an embodiment of the floor frame assembly provided in this application.

[0032] The floor frame assembly 10 includes two floor longitudinal beams 200, a first crossbeam 300, a second crossbeam 400, and at least one reinforcing longitudinal beam 100. Two floor longitudinal beams 200 extend along a first direction X and are spaced apart in a second direction Y, wherein the first direction X and the second direction Y intersect. A first crossbeam 300 extends along the second direction Y and is located between the two floor longitudinal beams 200, connecting both floor longitudinal beams 200. A second crossbeam 400 extends along the second direction Y and is spaced apart from the first crossbeam 300 in the first direction X, located between the two floor longitudinal beams 200, connecting both floor longitudinal beams 200. At least one reinforcing longitudinal beam 100 extends along the first direction X and connects the first crossbeam 300 and the second crossbeam 400, wherein the second crossbeam 400 has a height difference from the first crossbeam 300 in a third direction Z, and the first direction X, the second direction Y, and the third direction Z intersect each other. The connection between the reinforcing longitudinal beam 100 and the first crossbeam 300 and / or the second crossbeam 400 is bent.

[0033] Two floor longitudinal beams 200 extend along a first direction X and are spaced apart along a second direction Y. The second direction Y intersects the first direction X. The first direction X can be understood as the longitudinal direction of the vehicle, and the second direction Y can be understood as the lateral direction of the vehicle. The two ends of the two floor longitudinal beams 200 along the first direction X can be connected to the front and rear assemblies respectively to form the entire lower body structure. The floor longitudinal beams 200 can be integrally extruded profiles, and have multiple cavities formed by the intersection of multiple horizontal or vertical plates, thereby improving the structural strength of the floor longitudinal beams 200.

[0034] The first crossbeam 300 and the second crossbeam 400 both extend in the second direction Y. The first crossbeam 300 and the second crossbeam 400 are spaced apart in the first direction X. Each end of the first crossbeam 300 and the second crossbeam 400 in the second direction Y is connected to a floor longitudinal beam 200, so that the first crossbeam 300, the second crossbeam 400, and the two floor longitudinal beams 200 can form a "U"-shaped frame, improving the structural strength of the floor frame assembly 10. In this embodiment, the first crossbeam 300 can be connected to the ends of the two floor longitudinal beams 200, and the distance between the second crossbeam 400 and the first crossbeam 300 can be less than half the dimension of the floor longitudinal beam 200 in the first direction X, thereby improving the structural strength of the floor frame assembly 10. In some other embodiments, the first crossbeam 300 and the second crossbeam 400 may be located at the middle of the floor longitudinal beam 200 in the first direction X, that is, the first crossbeam 300 and the second crossbeam 400 are spaced apart from the end of the floor longitudinal beam 200 in the first direction X, so that the first crossbeam 300 and the second crossbeam 400 are both supported between the two floor longitudinal beams 200.

[0035] The reinforcing longitudinal beam 100 extends in the first direction X. The first crossbeam 300 and the second crossbeam 400 may have a height difference in the third direction Z. The two ends of the reinforcing longitudinal beam 100 in the first direction X are respectively connected to the first crossbeam 300 and the second crossbeam 400. The connection between the reinforcing longitudinal beam 100 and the first crossbeam 300 and / or the second crossbeam 400 is bent. That is to say, one end of the reinforcing longitudinal beam 100 is connected to the side of the first crossbeam 300 in the third direction Z that is close to the reinforcing longitudinal beam 100, and the other end of the reinforcing longitudinal beam 100 is connected to the side of the second crossbeam 400 in the third direction Z. This can increase the connection area between the reinforcing longitudinal beam 100 and the first crossbeam 300 and the second crossbeam 400, and improve the connection strength between the reinforcing longitudinal beam 100 and the first crossbeam 300 and the second crossbeam 400. The reinforcing longitudinal beam 100 bends at its connection with the first crossbeam 300 and / or the second crossbeam 400, extending towards the first crossbeam 300 and the second crossbeam 400 respectively, such that the reinforcing longitudinal beam 100, the first crossbeam 300, and the second crossbeam 400 form a collapsed region with an opening, the opening of which faces away from the reinforcing longitudinal beam 100 in the third direction Z. In some other embodiments, the reinforcing longitudinal beam 100 may be bent only at its connection with the first crossbeam 300; or, the reinforcing longitudinal beam 100 may be bent only at its connection with the second crossbeam 400; or, the reinforcing longitudinal beam 100 may be bent at both its connections with the first crossbeam 300 and the second crossbeam 400.

[0036] Through the above implementation method, the first crossbeam 300 has a height difference with the second crossbeam 400 in the third direction Z. The two ends of the reinforcing longitudinal beam 100 in the first direction X are respectively connected to the first crossbeam 300 and the second crossbeam 400. The connection between the reinforcing longitudinal beam 100 and the first crossbeam 300 and / or the second crossbeam 400 is bent so that the reinforcing longitudinal beam 100, the first crossbeam 300 and the second crossbeam 400 form a collapse area, which can improve the impact performance of the floor frame assembly 10.

[0037] In some embodiments, the reinforcing longitudinal beam 100 includes a main body 110 and a connecting portion 120. The main body 110 is at the same level in the first direction X. One end of the main body 110 is connected to the first crossbeam 300. One end of the connecting portion 120 is connected to the other end of the main body 110. The other end of the connecting portion 120 is bent toward the first crossbeam 300 and connected to the first crossbeam 300. The reinforcing longitudinal beam 100 includes a main body 110 and a connecting portion 120. One end of the main body 110 is connected to the second crossbeam 400. The other end of the main body 110 extends along the first direction X, that is, the main body 110 is at the same level in the first direction X, such that the end of the main body 110 near the first crossbeam 300 also has a height difference with the first crossbeam 300 in the third direction Z. One end of the connecting portion 120 is connected to one end of the main body 110 near the first crossbeam 300, and the other end of the connecting portion 120 is bent and extended toward the first crossbeam 300 in the third direction Z and connected to the first crossbeam 300. Thus, the first crossbeam 300 and the second crossbeam 400 are spaced apart in the third direction Z, and the main body 110 is on the same horizontal plane in the first direction X, which reduces encroachment on the upper space of the vehicle and increases the interior space of the vehicle. Furthermore, the bent arrangement of the connecting portion 120 not only improves its own structural strength but also forms a collapse zone with the main body 110, the first crossbeam 300, and the second crossbeam 400, thereby improving the impact performance of the floor frame assembly 10 in the first direction X. In some other embodiments, the reinforcing longitudinal beam 100 may include a main body 110 and two connecting parts 120. The two connecting parts 120 are connected to both ends of the main body 110 in the first direction X, and the two connecting parts 120 are respectively bent to the first crossbeam 300 and the second crossbeam 400, so that the two ends of the main body 110 together with the first crossbeam 300 and the second crossbeam 400 through the two connecting parts 120 form a larger collapse space, thereby improving the impact performance of the floor frame assembly 10 in the first direction X.

[0038] In some embodiments, the reinforcing longitudinal beam 100 includes a main body 110 and a connecting portion 120. The two ends of the main body 110 are respectively connected to a second crossbeam 400 and the connecting portion 120. The end of the connecting portion 120 away from the main body 110 is connected to a first crossbeam 300. The main body 110 is located on one side of the first crossbeam 300 in the third direction Z. The distance between the end of the main body 110 near the first crossbeam 300 and the second crossbeam 400 in the third direction Z is greater than the distance between the end of the main body 110 near the second crossbeam 400 and the second crossbeam 400. The reinforcing longitudinal beam 100 includes a main body 110 and a connecting portion 120. One end of the main body 110 is connected to the second crossbeam 400, and the other end of the main body 110 is connected to the first crossbeam 300 via the connecting portion 120. The main body 110 is not in the same horizontal plane in the first direction X. As an example, the main body 110 is located on the side of the second crossbeam 400 away from the ground in the third direction Z. The distance between the end of the main body 110 near the first crossbeam 300 and the second crossbeam 400 in the third direction Z is greater than the distance between the end of the main body 110 near the second crossbeam 400 and the second crossbeam 400. In simple terms, the end of the main body 110 near the first crossbeam 300 is farther away from the second crossbeam 400 in the third direction Z. This allows a height difference to be formed between the two ends of the main body 110. When subjected to an impact force in the second direction Y, the longitudinal beam 100 has a stronger ability to resist deformation in the second direction Y, thereby improving the impact performance of the floor frame assembly 10 in the second direction Y. As another example, one end of the main body 110 near the second crossbeam 400 is connected to the side of the second crossbeam 400 away from the ground in the third direction Z. The other end of the main body 110 is closer to the first crossbeam 300 in the third direction Z than the end near the second crossbeam 400, so that the end of the main body 110 near the second crossbeam 400 is higher than the end near the first crossbeam 300. The end of the main body 110 near the first crossbeam 300 is connected to the first crossbeam 300 through the connecting part 120, so that the two ends of the main body 110 form a height difference in the first direction X. When subjected to the impact force in the second direction Y, the longitudinal beam 100 has a stronger ability to resist deformation in the second direction Y, which can improve the impact performance of the floor frame assembly 10 in the second direction Y. Furthermore, since there is a height difference between the two ends of the main body 110 in the third direction Z, the main body 110 may include a curved transition portion with a certain curvature so that the two ends of the main body 110 can transition smoothly, thereby making the transmission of impact force smoother and improving the impact performance of the floor frame assembly 10.

[0039] See Figure 2 and Figure 3 , Figure 2 yes Figure 1 A first-view structural schematic diagram of an embodiment of the reinforcing longitudinal beam shown. Figure 3 yes Figure 1A second-view structural schematic diagram of an embodiment of the reinforcing longitudinal beam shown.

[0040] In some embodiments, the connecting portion 120 includes two connecting contact angles 121 located at the end of the connecting portion 120 away from the main body 110, and the two connecting contact angles 121 are spaced apart in the second direction Y. The two connecting contact angles 121 are located at the end of the connecting portion 120 away from the main body 110, and the connecting portion 120 is connected to the first crossbeam 300 through the two connecting contact angles 121. The two connecting contact angles 121 are spaced apart in the second direction Y, thereby forming another collapse region between the two connecting contact angles 121, which can improve the structural strength of the connecting portion 120. Therefore, the connecting part 120 is connected to the first crossbeam 300 through two connecting contact angles 121, which optimizes the force transmission path. When the first crossbeam 300 is subjected to impact force, the two connecting contact angles 121 form two force transmission paths, transmitting the impact force to the main body 110 through the two connecting contact angles 121. This concentrates the impact force from the two connecting contact angles 121 into a larger force transmission path, which is finally transmitted to the second crossbeam 400 through the main body 110, thus facilitating the absorption of impact force. In this embodiment, the connection between the connecting contact angle 121 and the first crossbeam 300 can be bent and extended in the first direction X. The bent and extended part is arranged opposite to and connected to the first crossbeam 300, thereby improving the structural strength of the connecting contact angle 121 itself, as well as increasing the connection area between the connecting part 120 and the first crossbeam 300, and improving the connection strength with the first crossbeam 300.

[0041] In some embodiments, the main body 110 includes a main body plate 111 and two connecting plates 112. The portion of the main body plate 111 corresponding to the second crossbeam 400 is spaced apart from the second crossbeam 400 in the third direction Z. The two connecting plates 112 are respectively connected to one end of the main body plate 111 in the second direction Y. One end of the two connecting plates 112 overlaps the second crossbeam 400, and the other end of the two connecting plates 112 is respectively connected to a connecting contact angle 121. The main body 110 includes a main plate 111 and two connecting plates 112. The portion of the main plate 111 corresponding to the second crossbeam 400 is spaced apart from the second crossbeam 400 in the third direction Z. The two connecting plates 112 are respectively connected to one side of the main body 110 in the second direction Y. Both connecting plates 112 extend along both ends of the main plate 111 in the first direction X and extend to connect with the connecting contact angle 121. The end of the two connecting plates 112 near the second crossbeam 400 is connected to the second crossbeam 400, so that the second crossbeam 400, the main plate 111 and the two connecting plates 112 form an energy absorption cavity. This not only improves the structural strength of the reinforcing longitudinal beam 100 itself, but also improves the structural strength and stability of the connection between the reinforcing longitudinal beam 100 and the second crossbeam 400. Furthermore, the connecting plate 112 extends along both ends of the main plate 111 in the first direction X and connects with the connecting contact angle 121. Alternatively, the connecting plate 112 can be understood as being positioned at both ends of the main plate 111 in the second direction Y and extending in the first direction X. The end of the connecting plate 112 away from the second crossbeam 400 in the first direction X bends and extends in the third direction Z, connecting with the first crossbeam 300 to form the connecting contact angle 121. This allows the connecting contact angle 121 to transmit the impact force to the connecting plate 112, resulting in a smoother impact force transmission. Moreover, the connection plate 112 and the main plate 111 have a height difference; by transmitting the force through the connecting contact angle 121 to the connecting plate 112 and then to the main plate 111, the force transmission path can be optimized.

[0042] In some embodiments, the main body 110 includes two reinforcing edges 113, which are respectively connected to the side of a connecting plate 112 away from the main body plate 111 in the second direction Y and extend to the contact angle 121. The reinforcing edges 113 protrude from the side of the connecting plate 112 and the contact angle 121 away from the first crossbeam 300. The main body 110 also includes two reinforcing edges 113, which are respectively connected to the end of a connecting plate 112 away from the main body plate 111 in the second direction Y. The reinforcing edges 113 also extend along one side of the connecting plate 112 in the first direction X and extend to the contact angle 121. The reinforcing edges 113 protrude from the side of the connecting plate 112 and the contact angle 121, thereby improving the structural strength of both the main body 110 and the contact angle 121. Furthermore, the reinforcing edges 113 can be arranged around the outer periphery of the connecting portion 120 and the main body 110, thereby improving the overall structural strength of the reinforcing longitudinal beam 100. In addition, the reinforcing edge 113 protrudes from the side of the connecting plate 112 and the connecting contact angle 121 away from the first crossbeam 300, which can make the connection area between the connecting contact angle 121 and the first crossbeam 300 larger and have better connection strength.

[0043] In some embodiments, there are two reinforcing longitudinal beams 100, which are spaced apart in the second direction Y and spaced apart from adjacent floor longitudinal beams 200. The two reinforcing longitudinal beams 100, spaced apart in the second direction Y and also spaced apart from adjacent floor longitudinal beams 200, form a “four”-shaped structural frame consisting of the first crossbeam 300, the second crossbeam 400, the two floor longitudinal beams 200, and the two reinforcing longitudinal beams 100. That is, the two floor longitudinal beams 200 and the two reinforcing longitudinal beams 100 together form three square frame structures arranged sequentially in the second direction Y, which improves the structural strength of the floor frame assembly 10. Of course, in other embodiments, the number of reinforcing longitudinal beams 100 can be more, such as three or four. The number of reinforcing longitudinal beams 100 can be set according to the actual situation. In some other embodiments, the floor frame assembly 10 may also include a third crossbeam and / or a fourth crossbeam, with the first crossbeam 300, the second crossbeam 400, the third crossbeam and the fourth crossbeam arranged sequentially at intervals in the first direction X, and a plurality of reinforcing longitudinal beams 100 extending in the first direction X, and the plurality of reinforcing longitudinal beams 100 respectively connected to each crossbeam in the first direction X.

[0044] In some embodiments, two reinforcing longitudinal beams 100 are symmetrically arranged, and the two connecting contact angles 121 of each reinforcing longitudinal beam 100 are spaced apart in the first direction X. The symmetrical arrangement of the two reinforcing longitudinal beams 100 can make the force more balanced. Specifically, a plane of symmetry is formed by the first direction X and the third direction Z. The plane of symmetry is perpendicular to the middle of the floor frame assembly in the second direction Y. The two reinforcing longitudinal beams 100 are symmetrically arranged with reference to this plane of symmetry. The two connecting contact angles 121 of the same connecting portion 120 are spaced apart in the first direction X, so that one connecting contact angle 121 is closer to the second crossbeam 400. When the first crossbeam 300 is subjected to an impact force, the connecting contact angle 121 that is farther away from the second crossbeam 400 preferentially transmits the impact force to the main body portion 110. After the impact force is partially attenuated, the other connecting contact angle 121 continues to transmit the impact force to the main body portion 110, thereby realizing the graded transmission effect of impact force and improving the impact performance of the floor frame assembly 10. Furthermore, the two connecting contact angles 121 are spaced apart in the first direction X, which can improve the stability of the connection with the first crossbeam 300 and reduce the space occupied. For example, the connecting contact angle 121 near the adjacent floor longitudinal beam 200 can be closer to the second crossbeam 400; or, the connecting contact angle 121 near the adjacent floor longitudinal beam 200 can be further away from the second crossbeam 400.

[0045] In some embodiments, within the same reinforcing longitudinal beam 100, the connection points of two connecting plates 112 with their corresponding connecting contact angles 121 are bent. The curvature of the connecting plate 112 connected to the connecting contact angle 121 closer to the second crossbeam 400 is smaller than that of the other connecting plate 112. Each of the two connecting plates 112 is connected to a corresponding connecting contact angle 121, and the connection points of the connecting plates 112 and the connecting contact angles 121 are bent to better transmit impact force. The curvature of the bend at the connecting plate 112 connected to the connecting contact angle 121 closer to the second crossbeam 400 is smaller than that at the connection point of the other connecting plate 112 with its corresponding connecting contact angle 121, thereby improving both the structural strength of the connection portion 120 and the smoothness of impact force transmission, thus enhancing the impact performance of the floor frame assembly 10.

[0046] In some embodiments, the first crossbeam 300 includes a crossbeam body and two crossbeam connecting bodies. The crossbeam body is spaced apart from the second crossbeam 400 in the third direction Z. The two crossbeam connecting bodies are respectively connected to one end of the crossbeam body. The end of the crossbeam connecting body away from the crossbeam body is bent and extended towards the floor longitudinal beam 200 in the first direction X and connected to the floor longitudinal beam 200, so that the end of the crossbeam connecting body away from the crossbeam body is opposite to the floor longitudinal beam 200, thereby facilitating the transmission of impact force. This reduces the size of the crossbeam body in the second direction Y. The crossbeam body is connected to the floor longitudinal beam 200 through the bent crossbeam connecting bodies, which improves the structural strength of the first crossbeam 300 itself and allows the crossbeam body to effectively transmit impact force to the floor longitudinal beam 200 through the crossbeam connecting bodies, improving the impact performance of the floor frame assembly 10. The spaced arrangement of the first crossbeam 300 and the second crossbeam 400 in the third direction Z also reduces the encroachment on the vehicle's interior space.

[0047] In one embodiment, the main body 110 is further provided with weight-reducing holes, and multiple reinforcing mounting holes are provided on both sides of the weight-reducing holes in the first direction X. The reinforcing mounting holes penetrate the two opposite surfaces of the main body 110 and can be used to install other components, such as pipes, controllers, and interior and exterior trim panels. The reinforcing mounting holes can protrude from the main body 110. Thus, the reinforcing mounting holes protruding from the main body 110 can improve its own structural strength, and the reinforcing mounting holes located on both sides of the weight-reducing holes can reduce the weight of the reinforcing longitudinal beam 100 and improve the structural strength of the corresponding position.

[0048] In summary, through the above embodiments, the first crossbeam 300 has a height difference with the second crossbeam 400 in the third direction Z, the two ends of the reinforcing longitudinal beam 100 in the first direction X are respectively connected to the first crossbeam 300 and the second crossbeam 400, and the reinforcing longitudinal beam 100 is bent at the connection between the first crossbeam 300 and / or the second crossbeam 400 to form a collapse area between the reinforcing longitudinal beam 100 and the first crossbeam 300 and the second crossbeam 400, which can improve the impact performance of the floor frame assembly 10.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A floor frame assembly, characterized in that, The floor frame assembly includes: Two floor longitudinal beams are provided, extending along a first direction, and the two floor longitudinal beams are spaced apart in a second direction, wherein the first direction and the second direction intersect; A first crossbeam extends along the second direction and is located between the two floor longitudinal beams, and connects the two floor longitudinal beams respectively; The second crossbeam extends along the second direction and is spaced apart from the first crossbeam in the first direction. The second crossbeam is located between the two floor longitudinal beams and connects the two floor longitudinal beams respectively. At least one reinforcing longitudinal beam extends along the first direction, and the reinforcing longitudinal beam connects the first crossbeam and the second crossbeam respectively. The second crossbeam has a height difference with the first crossbeam in a third direction. The first direction, the second direction, and the third direction intersect each other. The connection between the reinforcing longitudinal beam and the first crossbeam and / or the second crossbeam is bent.

2. The floor framing assembly according to claim 1, wherein, The reinforcing longitudinal beam includes a main body and a connecting part. The main body is at the same level in the first direction. One end of the main body is connected to the first crossbeam. One end of the connecting part is connected to the other end of the main body. The other end of the connecting part is bent toward the first crossbeam and connected to the first crossbeam.

3. The floor framing assembly according to claim 1, wherein, The reinforcing longitudinal beam includes a main body and a connecting part. The end of the connecting part away from the main body is connected to the first crossbeam. The main body is located on one side of the first crossbeam in the third direction. The distance between the end of the main body closer to the first crossbeam and the second crossbeam in the third direction is greater than the distance between the end of the main body closer to the second crossbeam and the second crossbeam.

4. The floor framing assembly according to claim 2 or 3, wherein, The connecting portion includes two connecting contact angles, which are located at the end of the connecting portion away from the main body portion, and the two connecting contact angles are spaced apart in the second direction.

5. The floor framing assembly according to claim 4, wherein, The main body includes a main plate and two connecting plates. The portion of the main plate corresponding to the second crossbeam is spaced apart from the second crossbeam in the third direction. The two connecting plates are respectively connected to one end of the main plate in the second direction. One end of the two connecting plates overlaps the second crossbeam, and the other end of the two connecting plates is respectively connected to a connecting contact angle.

6. The floor framing assembly according to claim 5, wherein, The main body includes two reinforcing edges, which are respectively connected to a connecting plate on the side away from the main body in the second direction and extend to the connecting contact angle. The reinforcing edges protrude from the connecting plate and the connecting contact angle away from the first crossbeam.

7. The floor framing assembly according to claim 6, wherein, The number of reinforcing longitudinal beams is two, and the two reinforcing longitudinal beams are spaced apart in the second direction, and the reinforcing longitudinal beams are spaced apart from the adjacent floor longitudinal beams.

8. The floor framing assembly according to claim 7, wherein, The two reinforcing longitudinal beams are symmetrically arranged, and the two connecting contact angles of each reinforcing longitudinal beam are spaced apart in the first direction.

9. The floor framing assembly according to claim 8, wherein, In the same said reinforcing longitudinal beam, the connection between the two said connecting plates and the corresponding said connecting tangs is curved, the curvature of the said connecting plate connected to the said connecting tang closer to the said second cross beam being smaller than the curvature of the other said connecting plate.

10. A vehicle characterized by comprising: The vehicle includes a floor frame assembly as claimed in any one of claims 1 to 9.

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