Seat beam assembly and vehicle

Abstract

This application discloses a seat crossbeam assembly and a vehicle, relating to the field of seat crossbeams. A seat crossbeam assembly includes: a first crossbeam, a second crossbeam, and a mounting foot; the first crossbeam has a collapsible section at its end; the second crossbeam is connected to the first crossbeam, and a collapsible space is formed between the second crossbeam and the first crossbeam, the collapsible space being through-hole at least in the area near the collapsible section; the collapsible section extends from the second crossbeam, and the collapsible section enters the collapsible space when collapsing; the mounting foot is at least connected to the second crossbeam. This application can solve problems such as deformation or even tearing of the rear seat crossbeam due to insufficient collapsibility.

Description

Technical Field

[0001] This application belongs to the technical field of seat crossbeams, specifically relating to a seat crossbeam assembly and a vehicle. Background Technology

[0002] The side pole impact test (hereinafter referred to as "side pole impact") applies to the 32 km / h 75° angle side pole impact test in new car evaluation programs (such as "C-NCAP", "E-NCAP", "A-NCAP"), insurance vehicle safety indices (such as "C-IASI"), and the national standard for pole impact recommended in 2018. The test involves the vehicle impacting a rigid pole at a speed of 32±0.5 km / h at an angle of 75°±3° to the vehicle's longitudinal centerline; that is, the vehicle is moving while the rigid pole is stationary.

[0003] Side pole impact tests require that, during deformation, the vehicle body must: ① maintain the integrity of the passenger compartment, i.e., avoid large-area tearing or weld cracking; ② ensure sufficient survival space for passengers; and ③ ensure that the battery pack modules are not subjected to severe compression. This typically requires the design of multiple strong force transmission channels on the sides of the vehicle body, placing high demands on the overall structural strength of the vehicle, the arrangement of these side force transmission channels, and the matching of seat beam stiffness.

[0004] In related technologies, the rear crossbeam of the front seat has a high cross section, exceeding that of the side sill beam, and is subjected to lateral force compression during a side pillar impact. However, due to insufficient collapse of the energy-absorbing zone, the weld joints of the rear crossbeam of the seat tear and become unstable and deformed, causing the rear crossbeam of the seat and the seat to warp upwards. This results in excessive occupant injury and the occupant compartment integrity does not meet the requirements. Utility Model Content

[0005] The purpose of this application is to provide a seat crossbeam assembly and vehicle that can solve problems such as deformation or even tearing of the rear crossbeam of the seat due to insufficient crumple.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application provide a seat crossbeam assembly, the seat crossbeam assembly comprising: a first crossbeam, a second crossbeam, and mounting feet; The end of the first crossbeam is provided with a collapsible section; The second crossbeam is connected to the first crossbeam, and the second crossbeam and the first crossbeam form a collapsible space, which is provided through at least in the area near the collapsible section; The collapsible section extends out of the second crossbeam, and the collapsible section enters the collapsible space when it collapses; The mounting feet are at least connected to the second crossbeam.

[0007] In some further embodiments, the second crossbeam includes a first sidewall, a second sidewall, and a connecting wall connecting the first sidewall and the second sidewall; The first sidewall and the second sidewall are respectively fixed to the two opposite sides of the first crossbeam, and the connecting wall is spaced apart from the top wall of the first crossbeam so that the first sidewall, the second sidewall, the connecting wall and the top wall together form the collapse space.

[0008] In some further embodiments, the included angle between the first sidewall and the connecting wall is greater than or equal to 90°; And / or, the angle between the second sidewall and the connecting wall is greater than or equal to 90°.

[0009] In some further embodiments, at least one sidewall of the collapsible segment is provided with a collapsible rib.

[0010] In some further embodiments, a first cavity is provided on the side of the first crossbeam opposite to the second crossbeam, and the first cavity is provided along the extension direction of the first crossbeam. The collapsible section is provided with a second groove, which is connected to the first groove.

[0011] In some further embodiments, the first crossbeam and the collapsible section are an integral structure; Alternatively, the collapsible section may be fixedly connected to the end of the first crossbeam.

[0012] In some further embodiments, the first crossbeam is provided with a first mounting area and a second mounting area spaced apart along its own extension direction, and the second crossbeam is fixed to the first mounting area and the second mounting area respectively, and forms the collapse space between the first mounting area and the second mounting area respectively; The first crossbeam has the collapse section at each end along the extension direction, and the collapse section at each end is correspondingly arranged with the collapse space.

[0013] In some further embodiments, the first crossbeam is also provided with a transition area, which connects the first mounting area and the second mounting area; The top wall of the transition zone protrudes beyond the top walls of the first mounting area and the second mounting area, and the top wall of the transition zone is flush with the connecting wall of the second crossbeam located in the first mounting area and the second mounting area, respectively.

[0014] In some further embodiments, the mounting feet are fixedly connected to the second crossbeam; Alternatively, the mounting feet are fixedly connected to the second crossbeam and the collapsible section, respectively.

[0015] In some further embodiments, along the extension direction of the first crossbeam, the width of the mounting foot near the second crossbeam is greater than the width away from the second crossbeam.

[0016] The seat crossbeam assembly in this embodiment includes a first crossbeam and a second crossbeam, with the second crossbeam connected to the first crossbeam, forming a collapsible space between them. This creates a split, stepped crossbeam structure between the first and second crossbeams, significantly increasing strength compared to a single-layer crossbeam. Furthermore, a collapsible section is provided at the end of the first crossbeam. When the seat crossbeam assembly is subjected to load, the collapsible section is crushed, resulting in collapsible deformation. Simultaneously, the collapsible section deforms towards the collapsible space, providing space for deformation. This effectively mitigates problems such as insufficient collapsibility leading to weld tearing and instability deformation of the seat crossbeam assembly, which can cause the seat crossbeam assembly and seat to warp or even break. This further alleviates the risk of injury to occupants due to warping or breakage of the seat crossbeam assembly, thus improving safety within the passenger compartment.

[0017] Secondly, this application also provides a vehicle including the aforementioned seat crossbeam assembly. Therefore, the vehicle can also achieve the technical effects achieved by the aforementioned seat crossbeam assembly. Attached Figure Description

[0018] Figure 1 This is a structural schematic diagram of the seat beam assembly disclosed in the embodiments of this application; Figure 2 This is a partial schematic diagram of the seat beam assembly disclosed in an embodiment of this application; Figure 3 This is a partial schematic diagram of the first crossbeam, the second crossbeam, and the collapsible section disclosed in an embodiment of this application; Figure 4 This is a structural schematic diagram of the first crossbeam and the collapsible section disclosed in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of the second crossbeam disclosed in an embodiment of this application; Figure 6 This is a schematic diagram of the installation feet disclosed in the embodiments of this application.

[0019] Explanation of reference numerals in the attached figures: 10-First crossbeam; 10a-First groove; 11-First mounting area; 12-Second mounting area; 13-Transition area; 20 - Second crossbeam; 21 - First sidewall; 22 - Second sidewall; 23 - Connecting wall; 30 - Mounting foot; 31 - Connecting lug; 32 - Through hole; 40 - Collapsed section; 41 - Collapsed rib; 42 - Second groove cavity; M-Collapse Space. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0022] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0023] refer to Figures 1 to 6 This application discloses a seat crossbeam assembly, which includes a first crossbeam 10, a second crossbeam 20, and mounting feet 30.

[0024] The first crossbeam 10 is a basic component that can provide a load-bearing and mounting foundation for components such as the second crossbeam 20 and mounting feet 30; in addition, the first crossbeam 10 can also be mounted to the floor of the vehicle chassis.

[0025] In some embodiments, the second crossbeam 20 is connected to the first crossbeam 10. Optionally, the second crossbeam 20 and the first crossbeam 10 can be fixedly connected, such as by welding or riveting. Of course, a detachable connection, such as by screwing, can also be used, as long as the reliability and stability of the connection between the first crossbeam 10 and the second crossbeam 20 can be guaranteed. The specific connection method is not limited.

[0026] In practice, the first crossbeam 10 is connected to the floor of the vehicle chassis, and the second crossbeam 20 can be connected to the area of ​​the first crossbeam 10 away from the floor, that is, the second crossbeam 20 is connected to the top area of ​​the first crossbeam 10.

[0027] Furthermore, when the first crossbeam 10 is connected to the floor, both ends of the first crossbeam 10 can extend to the area of ​​the side beams near the vehicle chassis. Considering that when the vehicle is subjected to a side collision or compression, the side beams will bend or dent inward, causing the side beams to exert a compressive force on the first crossbeam 10, which may lead to severe deformation of the first crossbeam 10, resulting in large-area weld cracking or tearing, thus posing a safety hazard to the occupants of the vehicle.

[0028] Based on the above, the end of the first crossbeam 10 can be provided with a crumple section 40, which extends beyond the second crossbeam 20. Thus, when the first crossbeam 10 is connected to the floor, the crumple section 40 can be located in the area where the side beam is located, allowing the first crossbeam 10 to connect to the side beam via the crumple section 40. Therefore, when the vehicle is subjected to a lateral collision or compression, the side beam will bend or dent inwards. At this time, the side beam will compress the crumple section 40, causing it to crumple and deform. Simultaneously, the crumple section 40 absorbs the energy of the collision or compression during the crumple and deformation process. This prevents the side beam from directly compressing the first crossbeam 10 and instead directly transfers energy to the first crossbeam 10. Consequently, the first crossbeam 10 is less prone to deformation, resulting in large-area weld cracking or tearing, thus ensuring the safety of the occupants.

[0029] In addition, considering that the first crossbeam 10 may block the collapse of the collapse section 40 during the collapse deformation, the collapse section 40 may be prone to insufficient collapse. There is still a risk that the first crossbeam 10 may suffer large-area weld failure, tearing and unstable deformation due to the large amount of collision or compression energy.

[0030] Based on the above, in this embodiment, the second crossbeam 20 and the first crossbeam 10 can form a collapsible space M, which is provided at least in the area near the collapsible segment 40. With this arrangement, when the collapsible segment 40 undergoes collapsible deformation, at least a portion of the collapsible segment 40 can enter the collapsible space M. That is, the collapsible space M can accommodate the collapsible segment 40 after its deformation, thereby ensuring that most of the area of ​​the collapsible segment 40 is not obstructed by the first crossbeam 10 during collapsible deformation. This guarantees that the collapsible segment 40 can generate sufficient collapsible deformation, thereby reducing the energy transferred from the collapsible segment 40 to the first crossbeam 10, and reducing the risk of large-area weld failure, tearing, and unstable deformation of the first crossbeam 10.

[0031] Optionally, the collapse space M can be set through the area near the collapse segment 40; of course, the collapse space M can also be set through other areas, such as areas far away from the collapse segment 40, etc. The specific form of the collapse space M is not limited here.

[0032] In addition, the mounting feet 30 are at least connected to the second crossbeam 20, and the mounting feet 30 can be used to fix the seat in place, ensuring the stability of the seat installation.

[0033] Optionally, some of the mounting feet 30 can be connected to the second crossbeam 20, and other parts of the mounting feet 30 can be connected to the first crossbeam 10; of course, in addition to being connected to the second crossbeam 20, the mounting feet 30 can also be connected to other structures, which can be set according to actual needs.

[0034] Optionally, the strength and stiffness of the first crossbeam 10 and the second crossbeam 20 can both be greater than the strength and stiffness of the collapsible section 40, so as to ensure that the first crossbeam 10 and the second crossbeam 20 will not deform when the collapsible section 40 is subjected to impact.

[0035] For example, the collapsible section 40 can be made of sheet metal with relatively low strength and stiffness, while the first crossbeam 10 and the second crossbeam 20 can both be made of sheet metal with relatively high strength and stiffness.

[0036] In some more specific embodiments, the collapsible section 40 can be made of 1000MPa hot-formed steel, the first crossbeam 10 can be made of 1500MPa hot-formed steel, and the second crossbeam 20 can also be made of 1500MPa hot-formed steel.

[0037] The seat crossbeam assembly in this embodiment includes a first crossbeam 10 and a second crossbeam 20, with the second crossbeam 20 connected to the first crossbeam 10, forming a collapsible space M between them. This creates a split, stepped crossbeam structure between the first crossbeam 10 and the second crossbeam 20, significantly increasing strength compared to a single-layer crossbeam. Furthermore, a collapsible section 40 is provided at the end of the first crossbeam 10. When the seat crossbeam assembly is subjected to load, the collapsible section 40 is crushed, resulting in collapsible deformation. Simultaneously, the collapsible section 40 deforms towards the collapsible space M, providing sufficient deformation space for it. This effectively alleviates problems such as insufficient collapsible section 40 causing weld tearing and instability deformation, leading to warping or even breakage of the seat crossbeam assembly and seat body. Furthermore, it mitigates the risk of injury to occupants due to warping or breakage of the seat crossbeam assembly, thus improving safety within the passenger compartment.

[0038] refer to Figure 5, in some embodiments, the second cross member 20 may include a first side wall 21, a second side wall 22 and a connecting wall 23. Wherein, the connecting wall 23 is connected between the first side wall 21 and the second side wall 22. Optionally, the first side wall 21, the second side wall 22 and the connecting wall 23 may together enclose the second cross member 20 with a concave cross-section, which is beneficial to improving the strength and rigidity of the second cross member 20, so that the second cross member 20 is not prone to deformation or even tearing when bearing a load.

[0039] In order to connect the second cross member 20 to the first cross member 10, the first side wall 21 and the second side wall 22 may be respectively fixed to opposite sides of the first cross member 10, and the connecting wall 23 is spaced apart from the top wall of the first cross member 10, so that the first side wall 21, the second side wall 22, the connecting wall 23 and the top wall together enclose a collapse space M, as Figure 3 shown.

[0040] For example, the cross section of the cross beam structure composed of the first cross member 10 and the second cross member 20 may be in a "sun" shape, which can improve the overall strength and rigidity of the cross beam structure.

[0041] Based on the above arrangement, the connection area can be increased through the fixed connection of the first side wall 21 and the second side wall 22 to the two sides of the first cross member 10 respectively, which is beneficial to improving the connection strength at the joint between the second cross member 20 and the first cross member 10, so as to reduce the risk of cracking. In addition, through the spaced arrangement of the first side wall 21 and the second side wall 22, and the spaced arrangement of the connecting wall 23 and the top wall, the collapsed section 40 can be accommodated when the collapsed section 40 undergoes collapse deformation, so that the collapsed section 40 can generate sufficient collapse deformation, alleviating the problem of insufficient collapse.

[0042] Optionally, the first side wall 21 and the second side wall 22 may be respectively fixed to the two sides of the first cross member 10 by welding, for example, spot welding, etc. Of course, riveting may also be used for fixation, as long as the firmness and reliability of the connection can be ensured, the specific form is not limited.

[0043] With reference to Figure 5 , in some embodiments, a first included angle may be formed between the first side wall 21 and the connecting wall 23, and the first included angle may be greater than or equal to 90°; in addition, a second included angle may be formed between the second side wall 22 and the connecting wall 23, and the second included angle may be greater than or equal to 90°.

[0044] In the first implementation: the first included angle is 90°, and the second included angle is 90°. In this case, the width of the second crossbeam 20 at the end closest to the first crossbeam 10 is the same as the width of the second crossbeam 20 at the end furthest from the first crossbeam 10. Therefore, to ensure that the second crossbeam 20 can wrap around the top of the first crossbeam 10, the width of the second crossbeam 20 can be greater than the width of the first crossbeam 10, thus ensuring that the second crossbeam 20 can smoothly wrap around the top of the first crossbeam 10.

[0045] In the second implementation, the first included angle is greater than 90° and the second included angle is equal to 90°. In this case, the width of the second crossbeam 20 at the end near the first crossbeam 10 is greater than the width of the second crossbeam 20 at the end away from the first crossbeam 10. Based on this, it is possible for the second crossbeam 20 to smoothly wrap around the top of the first crossbeam 10, and the span of the second crossbeam 20 at the end away from the first crossbeam 10 can be reduced, thereby improving the support stability of the second crossbeam 20.

[0046] In the third implementation, the first included angle is 90° and the second included angle is greater than 90°. In this case, the width of the second crossbeam 20 at the end near the first crossbeam 10 is greater than the width of the second crossbeam 20 at the end away from the first crossbeam 10. Based on this, it is possible for the second crossbeam 20 to smoothly wrap around the top of the first crossbeam 10, and the span of the second crossbeam 20 at the end away from the first crossbeam 10 can be reduced, thereby improving the support stability of the second crossbeam 20.

[0047] In the fourth embodiment, both the first included angle and the second included angle are greater than 90°. In this case, the width of the second crossbeam 20 at the end closest to the first crossbeam 10 is greater than the width of the second crossbeam 20 at the end furthest from the first crossbeam 10. This allows the second crossbeam 20 to easily wrap around the top of the first crossbeam 10, and also reduces the span of the second crossbeam 20 at the end furthest from the first crossbeam 10, thereby improving the support stability of the second crossbeam 20.

[0048] refer to Figures 2 to 4 In some embodiments, at least one side wall of the collapsible section 40 is provided with a collapsible rib 41. Based on the provision of the collapsible rib 41, the collapsible section 40 can be further improved in terms of the collapsible effect, ensuring that the collapsible section 40 can generate sufficient collapsible amount, thereby reducing the squeezing effect of the collapsible section 40 on the first crossbeam 10. Therefore, it can further alleviate the problems of weld cracking, tearing, and deformation caused by the compression of the first crossbeam 10.

[0049] Optionally, a groove may be punched into one side of at least one sidewall of the contraction section 40, and correspondingly, a protrusion or other structure may be formed on the other sidewall, thus forming a contraction rib 41 at the sidewall. Of course, the contraction rib 41 may also take other forms, which are not specifically limited here.

[0050] In some embodiments, a first cavity 10a may be provided on the side of the first crossbeam 10 facing away from the second crossbeam 20, such as... Figure 4 As shown, the first cavity 10a is arranged along the extension direction of the first crossbeam 10. In this way, the weight of the first crossbeam 10 can be reduced while ensuring sufficient strength and rigidity, which is conducive to the lightweight development of the whole vehicle. In addition, the first cavity 10a can also provide a accommodating space so that the protrusion on the chassis floor can be located in the first cavity 10a, which can improve the stability of the first crossbeam 10 and avoid interference.

[0051] Optionally, the cross-section of the first crossbeam 10 can be concave; of course, in other embodiments, the cross-section of the first crossbeam 10 can also be other shapes, which are not specifically limited here.

[0052] Accordingly, the collapsible section 40 may be provided with a second cavity 42, such as Figure 4 As shown, the second cavity 42 can be connected to the first cavity 10a. This facilitates the collapse deformation of the collapse section 40 when subjected to load, and also allows a portion of the collapse deformation of the collapse section 40 to enter the first cavity 10a, thereby reducing the squeezing effect of the collapse section 40 on the first crossbeam 10.

[0053] In some embodiments, the first crossbeam 10 and the collapsible section 40 can be an integral structure. For example, the first crossbeam 10 and the collapsible section 40 can be integrally formed by stamping. Of course, to make the collapsible section 40 more prone to collapsing deformation than the first crossbeam 10, collapsing ribs 41 can be provided on the sidewalls of the collapsible section 40. Based on the presence of the collapsing ribs 41, the overall strength and stiffness of the collapsible section 40 can be reduced, so that under load, the collapsible section 40 will undergo collapsing deformation, while the first crossbeam 10 may not deform or will only undergo slight deformation.

[0054] In other embodiments, the collapsible section 40 can be fixedly connected to the end of the first crossbeam 10. That is, in the initial state, the collapsible section 40 and the first crossbeam 10 are two separate parts, and the collapsible section 40 is fixedly connected to the end of the first crossbeam 10 through post-processing.

[0055] Optionally, the collapsible section 40 and the first crossbeam 10 can be fixed by welding, riveting, screwing, or other methods to ensure the firmness and reliability of the connection.

[0056] For example, the collapsible section 40 and the first crossbeam 10 can be laser welded together.

[0057] It should be noted that, in order for the collapsible section 40 to undergo collapsible deformation, the collapsible section 40 can be made of a material with lower strength and stiffness, so that the strength and stiffness of the collapsible section 40 are less than those of the first crossbeam 10, thereby enabling the collapsible section 40 to undergo collapsible deformation.

[0058] Considering that there is both a main frame side and a passenger side in the vehicle, in this embodiment of the application, the first crossbeam 10 can extend along the left and right direction of the vehicle (i.e., from the driver's side to the passenger side) so that the first crossbeam 10 can play a load-bearing role on the driver's side and the passenger side respectively.

[0059] Based on the above, the first crossbeam 10 can be provided with a first mounting area 11 and a second mounting area 12, such as... Figure 4 As shown, the first mounting area 11 and the second mounting area 12 are spaced apart along the extension direction of the first crossbeam 10, so that the first mounting area 11 can be located on the driver's side and the second mounting area 12 can be located on the passenger side.

[0060] Furthermore, the second crossbeam 20 can be fixed to the first mounting area 11 and the second mounting area 12 respectively. In this way, the second crossbeam 20 through the first mounting area 11 can support the driver's side seat, and the second crossbeam 20 through the second mounting area 12 can support the passenger side seat.

[0061] To ensure the safety of the occupants on the driver's and passenger's sides, it is necessary to ensure that both ends of the seat crossbeam assembly can undergo crumple deformation. Therefore, in this embodiment, the first crossbeam 10 can be provided with crumple sections 40 at both ends along its extension direction. This allows the corresponding crumple section 40 to undergo crumple deformation when the driver's or passenger's side of the vehicle is subjected to a collision or compression. This alleviates the problem of large-area weld cracking, tearing, and unstable deformation of the first crossbeam 10 due to insufficient crumple, thereby ensuring the safety of the occupants on the driver's and passenger's sides.

[0062] Furthermore, the second crossbeam 20 can form collapse spaces M in the first mounting area 11 and the second mounting area 12 respectively, and the collapse segment 40 at each end of the first crossbeam 10 can be correspondingly set with the collapse space M, so that when the collapse segment 40 at each end undergoes collapse deformation, it can enter the collapse space M on the corresponding side, further ensuring that the collapse segment 40 has sufficient collapse deformation, thereby further reducing the squeezing effect of the collapse segment 40 on the first crossbeam 10.

[0063] refer to Figure 1 and Figure 4In some embodiments, the first crossbeam 10 may also be provided with a transition area 13, which connects the first mounting area 11 and the second mounting area 12; the top wall of the transition area 13 protrudes from the top wall of the first mounting area 11 and the top wall of the second mounting area 12, and the top wall of the transition area 13 is flush with the connecting wall 23 of the second crossbeam 20 located in the first mounting area 11 and the second mounting area 12 respectively.

[0064] Based on the above settings, on the one hand, the overall flatness of the seat crossbeam assembly can be improved, and on the other hand, the seat crossbeam assembly can form a stable force transmission path, making the seat crossbeam less prone to deformation.

[0065] Optionally, the two ends of the transition zone 13 can be connected to the first installation zone 11 and the second installation zone 12 respectively through inclined sections to alleviate the stress concentration problem at the connection and improve the overall strength of the first crossbeam 10.

[0066] In some embodiments, the mounting foot 30 can be fixedly connected to the second crossbeam 20 so that the second crossbeam 20 can bear and fix the mounting foot 30, ensuring the installation stability of the mounting foot 30 and further improving the stability of the seat installed on the mounting foot 30.

[0067] Optionally, the mounting feet 30 and the second crossbeam 20 can be connected by welding, riveting, screwing, or other methods to ensure the reliability and stability of the connection.

[0068] refer to Figure 6 In some more specific embodiments, the mounting foot 30 may have multiple connecting ears 31, some of which are provided with through holes 32. The connecting ears 31 extending along the first crossbeam 10 can abut against the connecting wall 23 of the second crossbeam 20, and fasteners are installed in the through holes 32 to connect the fasteners to the connecting wall 23 of the second crossbeam 20. The connecting ears 31 extending along both sides of the first crossbeam 10 can be fitted onto the first sidewall 21 and the second sidewall 22 on both sides of the second crossbeam 20, and the connecting ears 31 are welded to either the first sidewall 21 or the second sidewall 22 respectively. Based on this, by connecting multiple connecting ears 31 to the second crossbeam 20, the firmness and stability of the connection between the mounting foot 30 and the second crossbeam 20 can be ensured.

[0069] refer to Figure 1 and Figure 2 In other embodiments, the mounting foot 30 can also be fixedly connected to the second crossbeam 20 and the collapsible section 40 respectively. In this way, the second crossbeam 20 and the collapsible section 40 can respectively play a role in bearing and fixing the mounting foot 30, ensuring the installation stability of the mounting foot 30 and further improving the stability of the seat installed on the mounting foot 30.

[0070] Optionally, the mounting feet 30 can be connected to the second crossbeam 20 and the collapsible section 40 by welding, riveting, screwing, or other methods to ensure the reliability and stability of the connection.

[0071] Continue to refer to Figure 6 In some more specific embodiments, the mounting foot 30 may have multiple connecting ears 31, some of which are provided with through holes 32. Specifically, one connecting ear 31 extending along the direction of the first crossbeam 10 may abut against the connecting wall 23 of the second crossbeam 20, while the other connecting ear 31 may abut against the top wall of the collapsible section 40. Furthermore, fasteners are installed in the through holes 32, thereby connecting the fasteners to both the connecting wall 23 of the second crossbeam 20 and the top wall of the collapsible section 40.

[0072] Based on the above configuration, the extended connecting lug 31 of the mounting foot 30 is located in the collapsible section 40, which not only improves the rigidity of the mounting foot 30, but also makes it less prone to tilting when subjected to impact.

[0073] Furthermore, the connecting ears 31 arranged along both sides of the first crossbeam 10 can be fitted onto the first sidewall 21 and the second sidewall 22 on both sides of the second crossbeam 20, and welded to the first sidewall 21 or the second sidewall 22 respectively. Based on this, by connecting multiple connecting ears 31 to the second crossbeam 20, the firmness and stability of the connection between the mounting feet 30 and the second crossbeam 20 can be ensured.

[0074] It should be noted that, because a collapsible space M is formed between the second crossbeam 20 and the first crossbeam 10, and the collapsible section 40 is located at the end of the first crossbeam 10, a height difference can exist between the second crossbeam 20 and the collapsible section 40. Based on this, when designing the mounting foot 30, the connecting lug 31 on the mounting foot 30 that is installed with the collapsible section 40 can be made longer than the connecting lug 31 that is installed with the second crossbeam 20, in order to accommodate the height difference between the second crossbeam 20 and the collapsible section 40.

[0075] refer to Figure 6 In some embodiments, along the extension direction of the first crossbeam 10, the width of the mounting foot 30 near the second crossbeam 20 is greater than the width away from the second crossbeam 20. This allows the mounting foot 30 to be formed in a shape that is smaller at the top and larger at the bottom, which can both increase the mounting area at the bottom of the mounting foot 30 and improve the load-bearing capacity at the top of the mounting foot 30.

[0076] For example, the side of the mounting foot 30 can be trapezoidal.

[0077] Based on the aforementioned seat crossbeam assembly, this application also discloses a vehicle, which includes the aforementioned seat crossbeam assembly.

[0078] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A seat crossbeam assembly, characterized in that, include: First crossbeam (10), second crossbeam (20) and mounting feet (30); The end of the first crossbeam (10) is provided with a collapsible section (40). The second crossbeam (20) is connected to the first crossbeam (10), and the second crossbeam (20) and the first crossbeam (10) form a collapsible space (M), which is provided through at least in the area near the collapsible section (40); The collapsible section (40) extends out of the second crossbeam (20), and the collapsible section (40) enters the collapsible space (M) when it collapses. The mounting feet (30) are at least connected to the second crossbeam (20).

2. The seat crossbeam assembly according to claim 1, characterized in that, The second crossbeam (20) includes a first side wall (21), a second side wall (22), and a connecting wall (23) connecting the first side wall (21) and the second side wall (22); The first sidewall (21) and the second sidewall (22) are respectively fixed on opposite sides of the first crossbeam (10), and the connecting wall (23) is spaced apart from the top wall of the first crossbeam (10) so that the first sidewall (21), the second sidewall (22), the connecting wall (23) and the top wall together form the collapse space (M).

3. The seat crossbeam assembly according to claim 2, characterized in that, The angle between the first sidewall (21) and the connecting wall (23) is greater than or equal to 90°; And / or, the angle between the second sidewall (22) and the connecting wall (23) is greater than or equal to 90°.

4. The seat beam assembly according to claim 1, characterized in that, At least one sidewall of the contraction segment (40) is provided with a contraction rib (41).

5. The seat crossbeam assembly according to claim 1, characterized in that, The first crossbeam (10) has a first cavity (10a) on the side opposite to the second crossbeam (20), and the first cavity (10a) is arranged along the extension direction of the first crossbeam (10); The collapsible section (40) is provided with a second cavity (42), which is connected to the first cavity (10a).

6. The seat beam assembly according to claim 1 or 5, characterized in that, The first crossbeam (10) and the collapsible section (40) are an integral structure; Alternatively, the collapsible section (40) is fixedly connected to the end of the first crossbeam (10).

7. The seat beam assembly according to any one of claims 1 to 3, characterized in that, The first crossbeam (10) is provided with a first mounting area (11) and a second mounting area (12) spaced apart along its own extension direction. The second crossbeam (20) is fixed to the first mounting area (11) and the second mounting area (12) respectively, and forms the collapse space (M) between the first mounting area (11) and the second mounting area (12). The first crossbeam (10) has a crumple section (40) at each end along the extension direction, and the crumple section (40) at each end is correspondingly provided with the crumple space (M).

8. The seat beam assembly according to claim 7, characterized in that, The first crossbeam (10) is also provided with a transition area (13), which is connected between the first mounting area (11) and the second mounting area (12); The top wall of the transition area (13) protrudes from the top wall of the first installation area (11) and the top wall of the second installation area (12), and the top wall of the transition area (13) is flush with the connecting wall (23) of the second crossbeam (20) located in the first installation area (11) and the second installation area (12).

9. The seat beam assembly according to claim 1, characterized in that, The mounting feet (30) are fixedly connected to the second crossbeam (20); Alternatively, the mounting feet (30) are fixedly connected to the second crossbeam (20) and the collapsible section (40), respectively.

10. The seat beam assembly according to claim 1 or 9, characterized in that, Along the extension direction of the first crossbeam (10), the width of the mounting foot (30) near the second crossbeam (20) is greater than the width away from the second crossbeam (20).

11. A vehicle, characterized in that, include: The seat beam assembly according to any one of claims 1 to 10.

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