Stringer structure, floor assembly, and vehicle

Abstract

The application provides a longitudinal beam structure, a floor assembly and a vehicle. The longitudinal beam structure is applied to a floor. The longitudinal beam structure comprises an upper longitudinal beam. The upper longitudinal beam is arranged at the top of the floor. The upper longitudinal beam comprises a first reinforcing piece and a second reinforcing piece. One end of the first reinforcing piece is connected to the middle part of the floor. The other end of the first reinforcing piece extends obliquely towards the end part of the floor. The second reinforcing piece is connected to the one end of the first reinforcing piece and the middle part of the floor respectively. The longitudinal beam structure can achieve good force transmission performance and avoid the problem of excessive crash performance.

Description

Technical Field

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

[0002] The vehicle includes a floor assembly, which consists of the floor and longitudinal beams. Typically, the longitudinal beams extend along the length of the floor from the front end to the rear end. The longitudinal beams occupy a large volume on the floor, and there is a problem of excessive collision performance. The manufacturing material cost is also high. Utility Model Content

[0003] The purpose of this application is to solve the aforementioned technical problems by providing a longitudinal beam structure, a floor assembly, and a vehicle, thereby ensuring the force transmission performance of the longitudinal beam structure and avoiding excessive collision performance. To achieve the above objective, the technical solution of this application is as follows:

[0004] In a first aspect, this application provides a longitudinal beam structure for use in a floor. The longitudinal beam structure includes an upper longitudinal beam disposed at the top of the floor. The upper longitudinal beam includes a first reinforcing member and a second reinforcing member. One end of the first reinforcing member is connected to the middle of the floor, and the other end of the first reinforcing member extends obliquely toward the end of the floor. The second reinforcing member is connected to one end of the first reinforcing member and the middle of the floor, respectively.

[0005] In one possible implementation, the first reinforcing member includes a first body, a first fixing part, and a first reinforcing part. The first fixing part is disposed on both sides of the first body, and the first reinforcing part is disposed at the end of the first body facing the second reinforcing member. And / or the second reinforcing member includes a second body, a second fixing part, and a second reinforcing part. The second fixing part is disposed on both sides of the second body, and the second reinforcing part is disposed at the end of the second body facing the first reinforcing member.

[0006] In one possible implementation, the first reinforcing part is connected to the first fixing part, the first body is inclined relative to the floor, and both the first fixing part and the first reinforcing part are connected to the floor.

[0007] In one possible implementation, the second reinforcing part overlaps with the first reinforcing part, and the second fixing part is connected to the floor.

[0008] In one possible implementation, a mating part is provided at the end of the second body away from the second reinforcing part, a positioning part is provided on the floor, the positioning part is connected to the mating part, and the second fixing part is disposed opposite to the first reinforcing part.

[0009] In one possible implementation, the longitudinal beam structure also includes a lower longitudinal beam, which is located at the bottom of the floor, and the orthographic projection of the upper longitudinal beam on the floor partially overlaps with the orthographic projection of the lower longitudinal beam on the floor.

[0010] In one possible implementation, one end of the lower longitudinal beam is located below the first reinforcing member, and the other end of the lower longitudinal beam extends into a second reinforcing member along the length of the floor.

[0011] In one possible implementation, the first reinforcing member is connected to the floor to form a first inner cavity, and the lower longitudinal beam is connected to the floor to form a second inner cavity. The first and second inner cavities are arranged correspondingly along the height direction of the floor.

[0012] Secondly, this application provides a floor assembly including the aforementioned longitudinal beam structure and seat crossbeam, with a second reinforcing member located between adjacent seat crossbeams, and a seat crossbeam disposed on top of the first reinforcing member.

[0013] Thirdly, this application provides a vehicle including the aforementioned floor assembly.

[0014] Compared with existing technologies, the beneficial effects of this application on the longitudinal beam structure, floor assembly, and vehicle are mainly reflected in:

[0015] The first reinforcing member extends at an angle relative to the floor, and the second reinforcing member connects to the middle of the floor. The upper longitudinal beam can effectively distribute the force to the floor, making the force uniform throughout the floor, improving the structural strength and support stiffness of the overall longitudinal beam structure, effectively reducing the probability of low-frequency vibration of the floor, and improving the driving comfort of the vehicle interior. The force transmission path between the upper longitudinal beam and the floor is clear, and the position of the upper longitudinal beam installed on the floor is reasonable, ensuring the force transmission performance of the longitudinal beam structure. The length of the upper longitudinal beam does not need to be the same as the length of the floor to achieve a good force transmission effect, which can achieve the design performance target, reduce weight and cost, and avoid the problem of excessive collision performance design. Attached Figure Description

[0016] Figure 1 A top view schematic diagram of a floor assembly provided for an embodiment of this application;

[0017] Figure 2 for Figure 1 The longitudinal beam structure shown is a structural schematic diagram of one embodiment;

[0018] Figure 3 for Figure 1 The longitudinal beam structure shown is a second structural schematic diagram of one embodiment;

[0019] Figure 4 for Figure 2 The diagram shows a partial cross-sectional view of the longitudinal beam structure in one embodiment of AA.

[0020] Figure 5 for Figure 2 The diagram shown is a structural schematic of the upper longitudinal beam in one embodiment.

[0021] Figure 6 for Figure 3 The diagram shows a structural schematic of the lower longitudinal beam in one embodiment.

[0022] Figure label:

[0023] Floor 1, Positioning Part 11;

[0024] 2. Longitudinal beam structure, 21. Upper longitudinal beam, 22. First reinforcing member, 23. Second reinforcing member, 24. Fitting part, 25. Mounting hole;

[0025] First body 31, first fixing part 32, first reinforcing part 33, first reinforcing rib 34;

[0026] Second body 41, second fixing part 42, second reinforcing part 43, second reinforcing rib 44;

[0027] Lower longitudinal beam 51, first inner cavity 52, second inner cavity 53;

[0028] Seat crossbeam 6, first seat crossbeam 61, second seat crossbeam 62;

[0029] Central channel assembly 7. Detailed Implementation

[0030] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0031] Example 1

[0032] This embodiment provides a longitudinal beam structure 2 applied to a floor 1. A seat crossbeam 6 is provided on the floor 1, and a seat (not shown in the figure) is installed on the seat crossbeam 6. The longitudinal beam structure 2 can strengthen the floor 1 to meet the support performance requirements of the floor 1. Existing longitudinal beams are arranged along the length of the floor 1, and the overall length of the longitudinal beam is adapted to the length of the floor 1. This results in over-design for collision performance, higher manufacturing costs, and is also not conducive to weight reduction. The longitudinal beams connect the front and rear ends of the floor 1, which also causes the problem of occupying space where the seat is located. This embodiment improves the longitudinal beam structure 2, which will be described in detail below.

[0033] like Figures 1-3As shown, the longitudinal beam structure 2 includes an upper longitudinal beam 21, which is disposed on the top of the floor 1. The upper longitudinal beam 21 includes a first reinforcing member 22 and a second reinforcing member 23. One end of the first reinforcing member 22 is connected to the middle of the floor 1, and the other end of the first reinforcing member 22 extends obliquely toward the end of the floor 1. The second reinforcing member 23 is connected to one end of the first reinforcing member 22 and the middle of the floor 1, respectively.

[0034] The first reinforcing member 22 extends at an angle relative to the floor 1, and the upper longitudinal beam 21 effectively distributes the force to the floor 1, making the force uniform across the floor 1. This improves the structural strength and support stiffness of the overall longitudinal beam structure 2, effectively reduces the probability of low-frequency vibrations in the floor 1, and enhances the driving comfort of the vehicle interior. The force transmission path between the upper longitudinal beam 21 and the floor 1 is clear, and the position of the upper longitudinal beam 21 on the floor 1 is reasonable, effectively improving the force transmission efficiency of the longitudinal beam structure 2. The length of the upper longitudinal beam 21 does not need to be the same as the length of the floor 1 to achieve a good force transmission effect, thus achieving the design performance target. This also reduces weight and cost, avoiding the problem of over-design in collision performance. The second reinforcing member 23 connects to the middle of the floor 1, reducing the space occupied by the second reinforcing member 23 and improving the comfort of using the vehicle interior.

[0035] In one embodiment, one end of the first reinforcing member 22 extends out of the floor 1, and the other end of the first reinforcing member 22 extends to the middle of the floor 1.

[0036] For example, such as Figure 2 As shown, the first reinforcing member 22 extends out of the floor 1 and is provided with a mounting hole 25. The mounting hole 25 is set to install the subframe (not shown in the figure). This reduces the space occupied by the first reinforcing member 22 on the floor 1 and also enables the assembly of the first reinforcing member 22 with the subframe, ensuring the installation stability and force transmission function of the upper longitudinal beam 21. The upper longitudinal beam 21 can transmit the force to the subframe, the floor 1 and the seat crossbeam 6, improving the force transmission efficiency.

[0037] In one embodiment, the first reinforcing member 22 includes a first body 31, a first fixing part 32 and a first reinforcing part 33. The first fixing part 32 is disposed on both sides of the first body 31, and the first reinforcing part 33 is disposed at the end of the first body 31 facing the second reinforcing member 23 and is connected to the first fixing part 32. The first body 31 is inclined relative to the floor 1, and both the first fixing part 32 and the first reinforcing part 33 are connected to the floor 1.

[0038] For example, such as Figure 5As shown, the first fixing part 32 and the first reinforcing part 33 are respectively connected to the floor 1 by welding. The cross-section of the first reinforcing member 22 has a roughly Z-shaped structure. The first reinforcing member 22 can provide good support through the first fixing part 32, ensuring the structural stability and collision energy absorption of the first reinforcing member 22. When the first reinforcing member 22 is subjected to force, the force is quickly dispersed through the first fixing part 32 and the first reinforcing part 33, improving the force transmission efficiency.

[0039] The first body 31 is provided with a first reinforcing rib 34. The extension direction of the first reinforcing rib 34 is consistent with the arrangement direction of the first body 31. The first reinforcing rib 34 is recessed relative to the first body 31. The first reinforcing rib 34 effectively guides the force flow to be transmitted on the first body 31. The first reinforcing rib 34 improves the structural strength of the first body 31 and reduces the risk of deformation of the first reinforcing member 22.

[0040] In one embodiment, the second reinforcing member 23 includes a second body 41, a second fixing part 42 and a second reinforcing part 43. The second fixing part 42 is disposed on both sides of the second body 41, and the second reinforcing part 43 is disposed at the end of the second body 41 facing the first reinforcing member 22. The second reinforcing part 43 overlaps with the first reinforcing part 33, and the second fixing part 42 is connected to the floor 1.

[0041] For example, such as Figure 5 As shown, the second reinforcing part 43 overlaps with the first reinforcing part 33, and the overlapping method can be welding; correspondingly, the second fixing part 42 is connected to the floor 1, and the connection method can be welding or screwing, to ensure the structural strength of the second reinforcing member 23, the first reinforcing member 22 and the floor 1, and to improve the continuity of force transmission.

[0042] The second body 41 is provided with a second reinforcing rib 44. There can be multiple second reinforcing ribs 44, and the second reinforcing ribs 44 can be arranged in a cross pattern to improve the structural strength of the second reinforcing member 23 and reduce the risk of deformation of the second reinforcing member 23.

[0043] In one embodiment, the second body 41 is provided with a mating part 24 at the end opposite to the second reinforcing part 43, and a positioning part 11 is provided at the top of the floor 1. The mating part 24 is connected to the positioning part 11, and the second fixing part 42 is disposed opposite to the first reinforcing part 33.

[0044] The positioning part 11 and the mating part 24 are engaged to achieve rapid positioning of the second body 41. At the same time, the bottom of the second reinforcing part 43 overlaps with the top of the first reinforcing part 33. The second reinforcing part 43 is located above the second fixing part 42. When the second fixing part 42 and the first reinforcing part 33 are against each other, the second reinforcing part 43 can be accurately positioned on the first reinforcing part 33, thereby achieving accurate positioning of the second reinforcing member 23 and improving the efficiency of assembling the second reinforcing member 23 on the floor 1.

[0045] In one embodiment, the longitudinal beam structure 2 further includes a lower longitudinal beam 51, which is disposed at the bottom of the floor 1. The orthographic projection of the upper longitudinal beam 21 on the floor 1 partially overlaps with the orthographic projection of the lower longitudinal beam 51 on the floor 1. One end of the lower longitudinal beam 51 is located below the first reinforcing member 22, and the other end of the lower longitudinal beam 51 extends along the length direction of the floor 1 to form a second reinforcing member 23.

[0046] The lower longitudinal beam 51 extends in the same direction as the upper longitudinal beam 21, both along the length of the floor 1. One end of the lower longitudinal beam 51 is located below the first reinforcing member 22 and near the front end of the floor 1, while the other end is flush with the rear end of the floor 1. The length of the lower longitudinal beam 51 can be the same as the length of the floor 1. With the upper longitudinal beam 21 extending only to the middle of the floor 1, the lower longitudinal beam 51 has sufficient length to effectively support the upper longitudinal beam 21, ensuring that the overall longitudinal beam structure 2 achieves the design goals for structural performance and further improving the structural strength and force transmission efficiency of the longitudinal beam structure 2.

[0047] In one embodiment, the first reinforcing member 22 is connected to the floor 1 to form a first inner cavity 52, and the lower longitudinal beam 51 is connected to the floor 1 to form a second inner cavity 53. The first inner cavity 52 and the second inner cavity 53 are arranged correspondingly along the height direction of the floor 1.

[0048] Among them, such as Figure 4 , Figure 6 As shown, the cross-section of the lower longitudinal beam 51 is roughly an inverted Z-shaped structure. The lower longitudinal beam 51 can be connected to the floor 1 by welding. The first inner cavity 52 and the second inner cavity 53 correspond to each other along the height direction of the floor 1. The first inner cavity 52 and the second inner cavity 53 are respectively connected to the floor 1 to form a continuous force transmission structure, which can fully absorb collision energy and enhance the structural performance of the longitudinal beam structure 2.

[0049] Example 2

[0050] This embodiment provides a floor assembly, including the longitudinal beam structure 2 and seat crossbeam 6 in the above embodiment, with a second reinforcing member 23 located between adjacent seat crossbeams 6, and a seat crossbeam 6 disposed on top of the first reinforcing member 22.

[0051] like Figure 1As shown, the seat crossbeam 6 includes a first seat crossbeam 61 and a second seat crossbeam 62, which are spaced apart. The first seat crossbeam 61 and the second seat crossbeam 62 can be arranged along the width direction of the floor 1. The first seat crossbeam 61 can be used to install the front seats (not shown in the figure), and the second seat crossbeam 62 can be used to install the rear seats (not shown in the figure). The first seat crossbeam 61 is located on the top of the first reinforcing member 22. When the longitudinal beam structure 2 is subjected to force, it can transmit the force to the first seat crossbeam 61, and then to the vehicle body, effectively improving the force transmission stability of the longitudinal beam structure 2.

[0052] For example, a first seat crossbeam 61 is provided on the first reinforcing part 33 of the first reinforcing member 22. The first reinforcing part 33 is connected to the floor 1. The first seat crossbeam 61 can be stably connected to the first reinforcing part 33. The local stiffness at the connection position between the first seat crossbeam 61 and the first reinforcing part 33 is good.

[0053] The second reinforcing member 23 is located between the first seat crossbeam 61 and the second seat crossbeam 62. Since the second reinforcing member 23 is directly connected to the middle of the floor 1, it reduces the space occupied in the vehicle interior and provides ample comfort space for the rear seats between the second seat crossbeam 62 and the first seat crossbeam 61.

[0054] In one embodiment, the floor assembly also includes a central channel assembly 7, with longitudinal beam structures 2 disposed on both sides of the central channel assembly 7.

[0055] Among them, the longitudinal beam structure 2 is symmetrically arranged on both sides of the central channel assembly 7 to achieve a balanced force distribution of the floor assembly. The floor assembly has the beneficial effects brought by the longitudinal beam structure 2, including improving force transmission efficiency and avoiding the problem of excessive collision performance design.

[0056] Example 3

[0057] This embodiment provides a vehicle including the floor assembly described in the above embodiments. The vehicle possesses the beneficial effects of the floor assembly, which will not be elaborated further here.

[0058] In the description of this application, unless otherwise stated, directional terms such as "up" and "down" generally refer to the relative "up" and "down" in the direction of gravity when the corresponding components are in use. "Top" and "bottom" refer to the "top" and "bottom" relative to the outline of the corresponding component itself. In addition, "front" and "rear" are defined based on the floor, with one end of the floor being "front" and the other end being "rear".

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In this application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "assembly," etc., 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, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0060] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0061] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A longitudinal beam structure applied to a floor (1), characterized in that: The longitudinal beam structure includes an upper longitudinal beam (21), which is disposed on the top of the floor (1). The upper longitudinal beam (21) includes a first reinforcing member (22) and a second reinforcing member (23). One end of the first reinforcing member (22) is connected to the middle of the floor (1), and the other end of the first reinforcing member (22) extends obliquely toward the end of the floor (1). The second reinforcing member (23) is connected to one end of the first reinforcing member (22) and the middle of the floor (1) respectively.

2. The longitudinal beam structure according to claim 1, characterized in that: The first reinforcing member (22) includes a first body (31), a first fixing part (32), and a first reinforcing part (33). The first fixing part (32) is disposed on both sides of the first body (31), and the first reinforcing part (33) is disposed at the end of the first body (31) facing the second reinforcing member (23), and / or The second reinforcing member (23) includes a second body (41), a second fixing part (42) and a second reinforcing part (43). The second fixing part (42) is disposed on both sides of the second body (41), and the second reinforcing part (43) is disposed at the end of the second body (41) facing the first reinforcing member (22).

3. The longitudinal beam structure according to claim 2, characterized in that: The first reinforcing part (33) is connected to the first fixing part (32), the first body (31) is inclined relative to the floor (1), and both the first fixing part (32) and the first reinforcing part (33) are connected to the floor (1).

4. The longitudinal beam structure according to claim 2, characterized in that: The second reinforcing part (43) overlaps with the first reinforcing part (33), and the second fixing part (42) is connected to the floor (1).

5. The longitudinal beam structure according to claim 2, characterized in that: The second body (41) has a mating part (24) at the end opposite to the second reinforcing part (43), and a positioning part (11) is provided on the floor (1). The positioning part (11) is connected to the mating part (24), and the second fixing part (42) is disposed opposite to the first reinforcing part (33).

6. The longitudinal beam structure according to claim 1, characterized in that: The longitudinal beam structure also includes a lower longitudinal beam (51), which is located at the bottom of the floor (1). The orthographic projection of the upper longitudinal beam (21) on the floor (1) partially overlaps with the orthographic projection of the lower longitudinal beam (51) on the floor (1).

7. The longitudinal beam structure according to claim 6, characterized in that: One end of the lower longitudinal beam (51) is located below the first reinforcing member (22), and the other end of the lower longitudinal beam (51) extends out to the second reinforcing member (23) along the length of the floor (1).

8. The longitudinal beam structure according to claim 6, characterized in that: The first reinforcing member (22) is connected to the floor (1) to form a first inner cavity (52), and the lower longitudinal beam (51) is connected to the floor (1) to form a second inner cavity (53). The first inner cavity (52) and the second inner cavity (53) are arranged correspondingly along the height direction of the floor (1).

9. A floor assembly, characterized in that: Includes the longitudinal beam structure and seat crossbeam (6) as described in any one of claims 1-8, with a second reinforcing member (23) located between adjacent seat crossbeams (6), and one of the seat crossbeams (6) disposed on top of the first reinforcing member (22).

10. A vehicle, characterized in that: Includes the floor assembly as described in claim 9.

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