Seat cross beam and vehicle
By designing the front high and rear low step structures and reinforcement rib sub-cavity of the seat beam, the problems of complex processing and low collision performance of the rear beam in the prior art are solved, and the effect of simplifying processing and improving collision safety performance is achieved.
Patent Information
- Application Number
- CN202421553603.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In the prior art, in order to avoid foot space of the rear occupants, the rear cross beam needs to be cut off, the processing process is increased and the stiffness and strength of the rear cross beam is reduced, resulting in a decrease in collision performance.
A seat cross beam is designed, including a first beam body and a second beam body. The top surface of the first beam body in the vehicle height direction is higher than the second beam body, forming a step structure with high front and low back to avoid foot space of the rear occupants, and a reinforcement rib is provided in the cavity of the first beam body to separate it into multiple sub-cavities to enhance its structural strength and collision absorption ability.
The processing process is simplified through the design without cutting, the structural integrity of the seat beam is maintained, and its stiffness, strength and bending resistance are improved through the setting of reinforcement ribs, and the performance of resistance to collision is improved.
Smart Images
Figure CN222728101U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of vehicles, and in particular to a seat crossbeam and a vehicle. Background Art
[0002] The front seat crossbeam is fixed to the floor of the car and is used to install and carry the front seats. The front seat crossbeam is an important component of the car body and plays an important role in the safety of the car body.
[0003] The front seat cross beam usually includes a front cross beam and a rear cross beam, which are spaced and arranged in parallel along the length direction of the vehicle body. Among them, the rear cross beam is located in the foot space of the rear passengers. In order to avoid the foot space of the rear passengers, in the related art, after the rear cross beam is extruded, the interference part of the rear cross beam is usually cut off, which not only increases the processing steps, but also reduces the rigidity and strength of the rear cross beam, resulting in reduced collision performance of the rear cross beam. Utility Model Content
[0004] In order to solve the above technical problems, the present disclosure provides a seat cross beam and a vehicle.
[0005] In a first aspect, the present disclosure provides a chair crossbeam, comprising a first beam body and a second beam body sequentially arranged in a first direction, wherein the first beam body is a hollow structure, a reinforcing rib is arranged in a cavity of the first beam body to divide the cavity into a plurality of sub-cavities, and in a second direction, a top surface of the first beam body in the second direction is higher than a top surface of the second beam body;
[0006] The first direction refers to the front-rear direction of the vehicle after the seat cross beam is installed on the vehicle, the first beam body is located in front of the second beam body, and the second direction refers to the height direction of the vehicle.
[0007] Optionally, the reinforcing ribs include a main reinforcing rib and a plurality of secondary reinforcing ribs, the main reinforcing ribs and the secondary reinforcing ribs both extend along the length direction of the first beam body, the main reinforcing ribs are in a U-shape, each secondary reinforcing rib is arranged between the main reinforcing rib and the first beam body, and the plurality of secondary reinforcing ribs are arranged at intervals along the circumference of the main reinforcing ribs.
[0008] Optionally, top surfaces of the first beam body and the second beam body are both planes parallel to the first direction.
[0009] Optionally, the first beam body has an inclined surface connected to its top surface, the inclined surface is connected to the top surface of the second beam body, the inclined surface is inclined relative to the second direction, and forms an obtuse angle with the top surface of the second beam body.
[0010] Optionally, the seat cross beam further includes a first extending edge and a second extending edge, in the first direction, the first extending edge is connected to a side of the first beam body away from the second beam body, and the second extending edge is connected to a side of the second beam body away from the first beam body.
[0011] Optionally, the seat cross beam includes a bottom plate, a first top plate, a second top plate, and a first vertical plate, a second vertical plate, and a third vertical plate arranged on the bottom plate in sequence in the first direction, the first top plate is connected between the first vertical plate and the second vertical plate, the second top plate is connected between the second vertical plate and the third vertical plate, the first vertical plate, the second vertical plate, the first top plate and part of the bottom plate constitute the first beam body, and the second vertical plate, the third vertical plate, the second top plate and part of the bottom plate constitute the second beam body.
[0012] Optionally, the first beam body, the second beam body and the reinforcing ribs are integrally formed.
[0013] Optionally, in the second direction, the width of the first beam body in the first direction gradually increases from the top surface of the first beam body downwards;
[0014] And / or, in the second direction, the width of the second beam body in the first direction gradually increases from the top surface of the second beam body downwards.
[0015] Optionally, the second beam body is a hollow structure; or
[0016] The second beam body is a hollow structure, and a reinforcing member connected to the second beam body is arranged in the cavity of the second beam body.
[0017] Optionally, a plurality of the second beam bodies are provided, and the plurality of the second beam bodies are arranged sequentially in the first direction, and among two adjacent second beam bodies, the top surface of the second beam body closer to the first beam body in the second direction is higher than the top surface of the other second beam body in the second direction.
[0018] In a second aspect, the present disclosure provides a vehicle, comprising the seat cross beam as described above.
[0019] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:
[0020] The seat crossbeam is provided with a first beam body and a second beam body, and the top surface of the first beam body in the vehicle height direction is higher than the top surface of the second beam body in the vehicle height direction, so that the top surface of the first beam body and the top surface of the second beam body have a height difference, forming a step structure with a high front and a low rear, thereby providing an escape space for the feet of rear passengers, and no cutting is required on the seat crossbeam, simplifying the processing process, and ensuring the structural integrity of the seat crossbeam. In addition, the setting of reinforcing ribs divides the inner cavity of the first beam body into multiple sub-cavities, which can absorb and buffer collision capabilities, and increases the bearing area of the first beam body in its length direction, improves the rigidity, strength and bending resistance of the seat crossbeam, and makes the seat crossbeam have better anti-collision performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0023] Figure 1 is an axonometric view of the seat crossbeam according to the embodiment of the present disclosure;
[0024] Figure 2 It is a side view of the seat crossbar according to the embodiment of the present disclosure;
[0025] Figure 3 A diagram showing the coordination between the seat crossbeam and the feet of the rear passengers according to an embodiment of the present disclosure;
[0026] Figure 4 It is a schematic diagram of the structure of the seat cross beam on the floor of the vehicle according to an embodiment of the present disclosure.
[0027] Among them, 10, seat crossbeam; 20, floor; 30, foot;
[0028] 101, bottom plate; 102, first vertical plate; 103, second vertical plate; 104, third vertical plate; 105, first top plate; 106, second top plate; 107, main reinforcing rib; 108, secondary reinforcing rib;
[0029] 1. First beam body; 11. First top surface; 12. Inclined surface; 2. Second beam body; 21. Second top surface; 3. Reinforcing ribs; 4. First extended edge; 5. Second extended edge. DETAILED DESCRIPTION
[0030] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0032] refer to Figures 1 to 4 As shown, this embodiment provides a seat cross beam 10, which includes a first beam body 1 and a second beam body 2 arranged in sequence in a first direction. The first beam body 1 is a hollow structure. A reinforcing rib 3 is arranged in the cavity of the first beam body 1 to divide the cavity into a plurality of sub-cavities. In the second direction, the top surface of the first beam body 1 in the second direction is higher than the top surface of the second beam body 2. The first direction refers to the front and rear direction of the vehicle after the seat cross beam 10 is installed on the vehicle, the first beam body 1 is located in front of the second beam body 2, and the second direction refers to the height direction of the vehicle. The first direction is as shown in FIG. Figure 2 The X direction in the second direction is Figure 2 in the Y direction.
[0033] It can be understood that since the top surface of the second beam body 2 is lower than the top surface of the first beam body 1, that is, in the front-to-back direction of the vehicle body, the height of the top surface of the second beam body 2 located at the rear is lower than the height of the top surface of the first beam body 1 located at the front, the top surface of the first beam body 1 and the top surface of the second beam body 2 have a height difference, and form a step structure with a high front and a low rear, thereby providing an escape space for the feet 30 of the rear passengers. In other words, the seat beam 10 of this embodiment has a top surface that is a step structure with a high front and a low rear, which forms an escape space for the feet of the rear passengers. In this way, after the seat beam 10 is formed, there is no need to cut off the seat beam 10, which not only simplifies the processing procedure, but also the setting of the reinforcing ribs also improves the stiffness, strength and bending resistance of the seat beam 10, so that the seat beam 10 has better anti-collision performance.
[0034] It should be noted that the seat cross beam 10 is arranged on the floor 20 of the vehicle along the left-right direction of the vehicle body. In the left-right direction of the vehicle body, one end of the seat cross beam 10 is connected to the left sill beam located on one side of the floor 20, and the other end of the seat cross beam 10 is connected to the right sill beam located on the other side of the floor 20.
[0035] In a specific implementation, the length direction of the seat cross beam 10 is consistent with the left-right direction of the vehicle body, and the width direction of the seat cross beam 10 is consistent with the front-back direction of the vehicle body. It can be understood that one end of the seat cross beam 10 in the length direction is connected to the left door sill beam, and the other end of the seat cross beam 10 in the length direction is connected to the right door sill beam.
[0036] Usually, there are at least two seat cross beams 10 corresponding to each seat, and the at least two seat cross beams 10 of the seat are arranged at intervals along the front-rear direction of the vehicle body and are arranged parallel to each other to achieve connection and installation of the seat and form a stable supporting effect.
[0037] In some implementations, the first beam body, the second beam body and the reinforcing ribs are integrally formed. For example, they can be integrally formed by extrusion of aluminum material, that is, the first beam body 1, the second beam body 2 and the reinforcing ribs are an integrated structure with good integrity, high structural strength and rigidity, and high collision safety performance, thereby further ensuring the installation performance of the seat cross beam 10 in resisting collision. Moreover, the seat cross beam is extruded from aluminum material, which can reduce the weight of the seat cross beam while ensuring the structural strength of the seat cross beam, meeting the design requirements of lightweight.
[0038] In some embodiments, a plurality of second beam bodies 2 are provided, and the plurality of second beam bodies 2 are arranged sequentially in the first direction, and among adjacent second beam bodies 2, the height of the top surface of the second beam body 2 close to the first beam body 1 in the second direction is higher than the top surface of another second beam body 2 in the second direction.
[0039] That is to say, a plurality of second beam bodies 2 are arranged on the rear side of the first beam body 1, and each second beam body 2 extends in the left-right direction of the vehicle body; in the front-to-rear direction of the vehicle body, the plurality of second beam bodies 2 are arranged in sequence from front to rear, and the top surfaces of the plurality of second beam bodies 2 decrease in height in the second direction from front to rear, and the top surfaces of the plurality of second beam bodies 2 form a multi-step structure with a high front and a low rear, which provides a larger avoidance space for the feet of the rear passengers and is more practical.
[0040] When the width of the seat cross beam 10 is the same, a plurality of second beam bodies 2 are arranged on the rear side of the first beam body 1 to form a multi-level step structure with a high front and a low rear, so that the seat cross beam 10 provides a larger avoidance space for the feet of the rear passengers and is more convenient to use.
[0041] In some embodiments, reference Figure 2 The reinforcing ribs 3 include a main reinforcing rib 107 and a plurality of secondary reinforcing ribs 108. Both the main reinforcing rib 107 and the secondary reinforcing ribs 108 extend along the length direction of the first beam body 1. The main reinforcing rib 107 is in a U-shape. Each secondary reinforcing rib 108 is arranged between the main reinforcing rib 107 and the first beam body 1, and the plurality of secondary reinforcing ribs 108 are arranged at intervals along the circumference of the main reinforcing rib 107.
[0042] It can be understood that by adopting the main reinforcing rib 107 in the shape of a square, and the secondary reinforcing rib 108 arranged at intervals along the circumference of the main reinforcing rib 107, not only the inner cavity of the first beam body 1 is divided into multiple split cavities, but also the cross-sectional area in the first direction of the seat beam is increased, so that when facing a frontal collision, the split cavity formed by the main reinforcing rib 107 can absorb and buffer the energy of the frontal collision, increase the energy absorption and collapse space of the frontal collision, and improve the ability to resist the frontal collision. At the same time, when facing a side collision, the reinforcing rib 3 can transfer the energy of the side collision, with a larger force area and higher energy transfer efficiency, which improves the ability to resist the side collision.
[0043] That is to say, the provision of the reinforcing ribs 3 enables the first beam body 1 to simultaneously achieve frontal collision energy absorption and lateral collision energy transmission capabilities, thereby further improving the collision safety performance.
[0044] In some implementations, reference Figure 2 There are four auxiliary reinforcing ribs 108 , and the four auxiliary reinforcing ribs 108 and the main reinforcing ribs 107 divide the cavity of the first beam body 1 into five separate cavities.
[0045] In some implementations, the reinforcing ribs 3 are integrally formed with the first beam body 1 to ensure the overall strength and rigidity of the seat cross beam 10. In specific implementations, the reinforcing ribs 3 and the first beam body 1 are extruded from aluminum, which can reduce the weight of the seat cross beam 10 and meet the lightweight design requirements.
[0046] It should be noted that the shape of the main reinforcing rib 3 can also be set to be circular, runway-shaped, etc.
[0047] In some implementations, the main reinforcing ribs 3 are coaxially arranged with the first beam body 1 , that is, the main reinforcing ribs 3 are centrally arranged in the cavity of the first beam body 1 , and the structural stability is better and the bearing capacity is more uniform.
[0048] In some implementations, the connection between the secondary reinforcement rib 108 and the inner wall of the first beam body 1 is in an arc transition to avoid stress concentration at the connection between the two, so that the structural strength of the seat beam 10 is higher and the effect of transmitting collision force is better.
[0049] In some implementations, the connection between the secondary reinforcement rib 108 and the main reinforcement rib 107 is an arc transition to avoid stress concentration at the connection between the two, so that the structural strength of the seat beam 10 is higher and the effect of transmitting collision force is better.
[0050] In some embodiments, reference Figure 2, the second beam body 2 is a hollow structure. Alternatively, the second beam body 2 may be a hollow structure, and a reinforcement member connected to the second beam body 2 is disposed in the cavity of the second beam body 2, and the arrangement of the reinforcement member can increase the structural strength of the second beam body 2. The reinforcement member may be arranged as a reinforcement rib extending along the length direction of the second beam body 2, for example, the reinforcement rib is in a straight line shape, a cross shape, or a mesh shape.
[0051] In some embodiments, reference Figure 2 The top surfaces of the first beam body 1 and the second beam body 2 are both planes parallel to the first direction.
[0052] It can be understood that when other structures need to be installed on the first beam body 1 or the second beam body 2, the planar design can allow the bolts to be arranged along the second direction, which is convenient for the installation and disassembly of the bolts, and can also allow the force of the remaining structures to act vertically on the seat cross beam 10 through the bolts, which is beneficial to improve the stability of the installation.
[0053] In some embodiments, reference Figure 2 The first beam body 1 has an inclined surface 12 connected to its top surface, the inclined surface 12 is connected to the top surface of the second beam body 2, the inclined surface 12 is inclined relative to the second direction, and forms an obtuse angle with the top surface of the second beam body 2.
[0054] For ease of description, refer to Figure 2 , wherein the top surface of the first beam body 1 is the first top surface 11, the top surface of the second beam body 2 is the second top surface 21, the inclined surface 12 is located between the first top surface 11 and the second top surface 21, and an obtuse angle is formed between the inclined surface 12 and the second top surface 21, so that an obtuse angle is also formed between the inclined surface 12 and the first top surface 11.
[0055] Understandably, during the vehicle assembly process, it is necessary to lay a carpet on the seat cross beam 10. In order to meet the installation requirements, it is necessary to ensure that the distance between the top angle of the first beam body 1 close to the second beam body 2 and the passenger's feet 30 when they are normally placed meets the set distance for laying the carpet. If the top angle of the first beam body 1 close to the second beam body 2 is set to a right angle, it is necessary to lower the height of the first beam body 1 or reduce the width of the first beam body 1. However, whether lowering the height of the first beam body 1 or reducing the width of the first beam body 1 will affect the bearing area of the first beam body 1 in the first direction and reduce its collision performance. Therefore, by setting the inclined surface 12, not only can it be achieved that the distance between the top angle of the first beam body 1 close to the second beam body 2 and the passenger's feet when they are normally placed meets the set distance, but also it will not have a significant impact on the bearing area of the first beam body 1 in the first direction, thereby ensuring the collision performance of the seat cross beam 10.
[0056] In some implementations, the connection between the inclined surface 12 and the first top surface 11 is an arc transition, which avoids stress concentration at the connection between the two, making the structural strength of the seat beam 10 higher and the collision safety performance better. At the same time, it can avoid injuring the feet of the rear passengers and improve safety in use.
[0057] In other implementations, the connection between the inclined surface 12 and the second top surface 21 is an arc transition, which avoids stress concentration at the connection between the two, so that the structural strength of the seat beam 10 is higher and the collision safety performance is better.
[0058] In some embodiments, reference Figure 2 The seat cross beam 10 further includes a first extension edge 4 and a second extension edge 5. In the first direction, the first extension edge 4 is connected to a side of the first beam body 1 away from the second beam body 2, and the second extension edge 5 is connected to a side of the second beam body 2 away from the first beam body 1.
[0059] It can be understood that by providing the first extension edge 4 and the second extension edge 5 , the first extension edge 4 and the second extension edge 5 are used to connect to the floor 20 of the vehicle, thereby facilitating the connection between the seat cross beam 10 and the floor 20 of the vehicle.
[0060] In some embodiments, reference Figure 2 , in the second direction, the width of the first beam body 1 in the first direction gradually increases from the top surface of the first beam body 1 downward. That is to say, in the height direction of the vehicle, from top to bottom, the width of the first beam body 1 in the first direction gradually increases, and the cross-section of the first beam body 1 in the first direction is trapezoidal or approximately trapezoidal, so that the first beam body 1 has high structural stability and good load-bearing capacity.
[0061] In some embodiments, reference Figure 2 , in the second direction, the width of the second beam body 2 in the first direction gradually increases from the top surface of the second beam body 2 downward. That is to say, in the height direction of the vehicle, from top to bottom, the width of the second beam body 2 in the first direction gradually increases, and the cross-section of the second beam body 2 in the first direction is trapezoidal or approximately trapezoidal, so that the second beam body 2 has high structural stability and good load-bearing capacity.
[0062] In some embodiments, reference Figure 3The seat cross beam 10 includes a bottom plate 101, a first top plate 105, a second top plate 106, and a first vertical plate 102, a second vertical plate 103, and a third vertical plate 104 sequentially arranged on the bottom plate 101 in a first direction. The first top plate 105 is connected between the first vertical plate 102 and the second vertical plate 103, and the second top plate 106 is connected between the second vertical plate 103 and the third vertical plate 104. The first vertical plate 102, the second vertical plate 103, the first top plate 105 and a part of the bottom plate 101 constitute a first beam body 1, and the second vertical plate 103, the third vertical plate 104, the second top plate 106 and a part of the bottom plate 101 constitute a second beam body 2.
[0063] The first top plate 105 has the first top surface 11 and the inclined surface 12, and the second top plate 106 has the second top surface 21. Specifically, the first top plate 105 is divided into two parts, the first top of the first top plate 105 has the first top surface 11, the second top has the inclined surface 12, and an obtuse angle is formed between the first top and the second top.
[0064] It can be understood that the first beam body 1 and the second beam body 2 share the second vertical plate 103, so that the structure between the first beam body 1 and the second beam body 2 is compact and there is no gap, thereby improving the structural strength of the joint between the first beam body 1 and the second beam body 2, thereby improving the structural strength of the seat cross beam 10.
[0065] It should be noted that, at this time, the bottom plate 101 is a whole, but different parts of the bottom plate 101 have different functions. For example, the bottom plate 101 is divided along the first direction to form a first part, a second part, a third part and a fourth part, wherein the first part constitutes the first extension edge 4, the fourth part constitutes the second extension edge 5, and the second part and the first vertical plate 102, the second vertical plate 103 and the first top plate 105 constitute the first beam body 1, and the third part and the second vertical plate 103, the third vertical plate 104 and the second top plate 106 constitute the second beam body 2.
[0066] In addition, in order to reduce the number of parts and reduce the difficulty of assembly, the bottom plate 101, the first vertical plate 102, the second vertical plate 103, the third vertical plate 104, the first top plate 105 and the second top plate 106 are integrally formed, that is, the bottom plate 101, the first vertical plate 102, the second vertical plate 103, the third vertical plate 104, the first top plate 105 and the second top plate 106 are integrally processed and formed. For example, the aluminum material is integrally extruded to ensure the structural strength while reducing the weight of the seat crossbeam 10 to achieve the lightweight design requirement.
[0067] Furthermore, the seat cross beam 10 further includes a reinforcing rib 3, and the main reinforcing rib 107 and the secondary reinforcing rib 108 of the reinforcing rib 3 are integrally formed with the bottom plate 101, the first vertical plate 102, the second vertical plate 103, the third vertical plate 104, the first top plate 105 and the second top plate 106. In other words, the seat cross beam 10 is integrally formed as a whole, has high integrity, is conducive to improving the overall structural strength of the seat cross beam 10, and does not require assembly.
[0068] The present embodiment further provides a vehicle, which includes a seat cross beam.
[0069] The seat cross beam in this embodiment has the same specific structure and implementation principle as the seat cross beam provided in the above embodiment, and can bring the same or similar technical effects, which will not be described one by one here, and the details can be referred to the description of the above embodiment.
[0070] Reference Figure 4 The vehicle further includes a floor 20 connected to the seat cross beam 10. Two seat cross beams 10 are provided for each row of seats, wherein at least the seat cross beam 10 located at the rear side of the two seat cross beams 10 corresponding to the front row seats adopts the structure of the seat cross beam 10 in the above embodiment.
[0071] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.
[0072] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A seat crossbeam, characterized in that: It comprises a first beam body and a second beam body arranged in sequence in a first direction, the first beam body is a hollow structure, a reinforcing rib is arranged in the cavity of the first beam body to divide the cavity into a plurality of sub-cavities, and in a second direction, a top surface of the first beam body in the second direction is higher than a top surface of the second beam body; The first direction refers to the front-rear direction of the vehicle after the seat cross beam is installed on the vehicle, the first beam body is located in front of the second beam body, and the second direction refers to the height direction of the vehicle.
2. The seat crossbar according to claim 1, characterized in that: The reinforcing ribs include main reinforcing ribs and multiple secondary reinforcing ribs, both of which extend along the length direction of the first beam body, the main reinforcing ribs are in a U-shape, each of the secondary reinforcing ribs is arranged between the main reinforcing ribs and the first beam body, and the multiple secondary reinforcing ribs are arranged at intervals along the circumference of the main reinforcing ribs.
3. The seat crossbar according to claim 1, characterized in that: The top surfaces of the first beam body and the second beam body are both planes parallel to the first direction.
4. The seat crossbar according to claim 1, characterized in that: The first beam body has an inclined surface connected to its top surface, the inclined surface is connected to the top surface of the second beam body, the inclined surface is inclined relative to the second direction, and forms an obtuse angle with the top surface of the second beam body.
5. The seat crossbar according to claim 1, characterized in that: The seat cross beam further includes a first extending edge and a second extending edge. In the first direction, the first extending edge is connected to a side of the first beam body away from the second beam body, and the second extending edge is connected to a side of the second beam body away from the first beam body.
6. The seat crossbar according to claim 1, characterized in that: The seat cross beam includes a bottom plate, a first top plate, a second top plate, and a first vertical plate, a second vertical plate, and a third vertical plate sequentially arranged on the bottom plate in the first direction, the first top plate is connected between the first vertical plate and the second vertical plate, the second top plate is connected between the second vertical plate and the third vertical plate, the first vertical plate, the second vertical plate, the first top plate, and a part of the bottom plate constitute the first beam body, and the second vertical plate, the third vertical plate, the second top plate, and a part of the bottom plate constitute the second beam body.
7. The seat crossbar according to claim 1, characterized in that The first beam body, the second beam body and the reinforcing ribs are integrally formed.
8. The seat crossbar according to claim 1, characterized in that In the second direction, the width of the first beam in the first direction gradually increases from the top surface of the first beam downward; And / or, in the second direction, the width of the second beam body in the first direction gradually increases from the top surface of the second beam body downwards.
9. The seat crossbar according to claim 1, characterized in that: The second beam body is a hollow structure; or The second beam body is a hollow structure, and a reinforcing member connected to the second beam body is arranged in the cavity of the second beam body.
10. The seat crossbar according to claim 1, characterized in that There are multiple second beam bodies, which are arranged in sequence in the first direction, and among two adjacent second beam bodies, the top surface of the second beam body close to the first beam body in the second direction is higher than the top surface of the other second beam body in the second direction.
11. A vehicle, characterized in that: The invention comprises a seat crossbar as claimed in any one of claims 1 to 10.