Threshold beam, side impact energy-absorbing structure assembly and vehicle

Abstract

The application provides a threshold beam, a side impact energy absorption structure assembly and a vehicle, and belongs to the technical field of vehicle components, and comprises a threshold beam outer plate structure, a threshold beam inner plate structure arranged on the inner side of the threshold beam outer plate structure, and an energy absorption support arranged between the threshold beam outer plate structure and the threshold beam inner plate structure, wherein the inner side of the threshold beam inner plate structure is connected with a front seat cross beam and a rear seat cross beam; the energy absorption support has a plurality of energy absorption channels distributed along the front-rear direction, each of the energy absorption channels penetrates along the left-right direction, the upper and lower widths of the energy absorption channels gradually decrease from the inside to the outside, and the front-rear widths of the energy absorption channels remain consistent from the inside to the outside. The application transfers the side impact energy absorption space from the inner side of the threshold beam body to the inside of the threshold beam body, maximally reduces the deformation degree of the front seat cross beam and the rear seat cross beam in the left-right direction, reduces the harm of the body deformation after the side impact to the personnel, the volume of the battery pack can be designed to be larger, and the endurance mileage is improved.

Description

Technical Field

[0001] This invention belongs to the field of vehicle component technology, specifically relating to a door sill beam, a side impact energy absorption structure assembly, and a vehicle. Background Technology

[0002] With the increasing popularity of new energy vehicles, their safety standards are also constantly improving. Side pole impact testing is a crucial standard for vehicle installation, primarily implemented through side pole impact tests to verify performance. In new energy vehicles, battery packs are installed at the bottom. To improve driving range, the size of these battery packs is continuously increasing. In the lateral direction, the edge of the battery pack is getting closer and closer to the side sill beam, compressing the inner space of the sill beam and reducing the energy absorption space during a collision. This affects the placement of the energy-absorbing box inside the sill beam, directly impacting side impact safety indicators. Summary of the Invention

[0003] This invention provides a door sill beam, a side impact energy absorption structure assembly, and a vehicle, aiming to solve the problem in the prior art where the design of the battery pack encroaches on the side impact energy absorption space inside the door sill beam, thus affecting side impact safety performance.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] Firstly, a door sill beam is provided, comprising:

[0006] The sill beam outer plate structure, the sill beam inner plate structure disposed inside the sill beam outer plate structure, and the energy-absorbing support member disposed between the sill beam outer plate structure and the sill beam inner plate structure, wherein the inner side of the sill beam inner plate structure is connected to the front crossbeam and the rear crossbeam of the seat.

[0007] The energy-absorbing support has multiple energy-absorbing channels distributed along the front-back direction. Each energy-absorbing channel is connected in the left-right direction. The vertical width of the energy-absorbing channel gradually decreases from the inside to the outside, and the front-back width of the energy-absorbing channel remains consistent from the inside to the outside.

[0008] In conjunction with the first aspect, in one possible implementation, the cross-section of the energy-absorbing channel is polygonal, and the inner port of the energy-absorbing channel is a regular polygon.

[0009] In some embodiments, the energy absorption channels are arranged symmetrically at the top and bottom.

[0010] In conjunction with the first aspect, in one possible implementation, the inner and outer lengths of the energy-absorbing channel are greater than the vertical width of the inner port of the energy-absorbing channel, and the inner and outer lengths of the energy-absorbing channel are greater than the front and back width of the inner port of the energy-absorbing channel.

[0011] In conjunction with the first aspect, in one possible implementation, the sill beam inner plate structure includes a floor sill beam reinforcing plate, the inner edge of the energy-absorbing support is fitted and connected to the outer side of the floor sill beam reinforcing plate, the inner side of the floor sill beam reinforcing plate is fitted and connected to the edge of the floor, and the inner side of the floor sill beam reinforcing plate is connected to the front crossbeam and the rear crossbeam of the seat.

[0012] In conjunction with the first aspect, in one possible implementation, the energy-absorbing support includes two support plates that are joined together vertically, and the two support plates enclose each other to form the energy-absorbing channel.

[0013] In some embodiments, the support plate includes channel plate portions and transition plate portions that are alternately distributed in the front-back direction, the channel plate portions of two support plates are joined together to form the energy-absorbing channel, and the transition plate portions of two support plates are fitted together and connected to each other.

[0014] In conjunction with the first aspect, in one possible implementation, the energy-absorbing support extends from the front of the sill beam outer panel structure to the rear of the sill beam outer panel structure.

[0015] Compared with the prior art, the solution shown in this application embodiment, when the side of the vehicle collides with the side impact pillar, the side impact pillar transmits the side impact force to the outer side panel and the outer sill beam structure, and both the outer side panel and the outer sill beam structure deform. The deformed outer sill beam structure squeezes the energy-absorbing support inward. After the energy-absorbing support is subjected to force, two main situations occur: First, because the energy-absorbing channel of the energy-absorbing support has a channel structure with gradually decreasing width at the top and bottom and a consistent width at the front and back, the structural strength of the energy-absorbing support is less than the strength of the front and rear crossbeams of the seat. After the energy-absorbing support is subjected to a large side impact force, it deforms first, forming a crumple energy-absorbing effect and buffering part of the side impact force; Second, the energy-absorbing support squeezes the inner sill beam structure, which is connected to the front and rear crossbeams of the seat. The force on the inner sill beam structure can be dispersed through the two force transmission paths of the front and rear crossbeams of the seat, avoiding the force from concentrating on the front or rear crossbeams of the seat.

[0016] The energy-absorbing support component of this application can achieve collapse and energy absorption through its own deformation. It can also work with the front and rear seat crossbeams in the vehicle body to quickly disperse the side impact force. The side impact energy absorption space is transferred from the inside of the sill beam body to the interior of the sill beam body, minimizing the deformation of the front and rear seat crossbeams in the lateral direction, expanding the survival space, and reducing the injury to occupants caused by vehicle deformation after a side impact. At the same time, the side impact energy absorption is less affected by the interior space of the sill beam body, and components such as the battery pack can be placed closer to the sill beam, meaning that the battery pack volume can be designed to be larger, which has a positive effect on improving the driving range.

[0017] Secondly, embodiments of the present invention provide a side impact energy absorption structure assembly, including a side outer panel, the aforementioned sill beam, the front crossbeam of the seat, and the rear crossbeam of the seat. In the sill beam, the outer panel structure of the sill beam is fitted and connected to the outer side outer panel, and the inner side of the inner panel structure of the sill beam is connected to the front crossbeam of the seat and the rear crossbeam of the seat.

[0018] Compared with the prior art, the solution shown in this application, by adopting the aforementioned sill beam, shifts the side impact energy absorption space from the inner side of the sill beam body to the interior of the sill beam body. This minimizes the deformation of the front and rear crossbeams of the seat in the lateral direction, expands the survival space, and reduces the injury to occupants caused by vehicle deformation after a side impact. At the same time, the side impact energy absorption is less affected by the space inside the sill beam body, allowing components such as the battery pack to be positioned closer to the sill beam. This means the battery pack volume can be designed to be larger, which has a positive effect on improving the driving range and balances the performance requirements of battery pack capacity and side impact safety.

[0019] Thirdly, embodiments of the present invention also provide a vehicle including the aforementioned side-impact energy-absorbing structure assembly.

[0020] The solution shown in this application embodiment, compared with the prior art, balances the performance requirements of battery pack capacity and side-impact safety by adopting the above-mentioned side-impact energy absorption structure assembly, thereby improving the safety and quality of use of the entire vehicle. Attached Figure Description

[0021] Figure 1 This is a perspective view of the energy-absorbing support used in an embodiment of the present invention;

[0022] Figure 2 This is a top view of the energy-absorbing support used in an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A top-view schematic diagram of a partial structure;

[0024] Figure 4 for Figure 3 A schematic diagram of the left-side view structure;

[0025] Figure 5 This is a perspective view of the side impact energy absorption structure assembly provided in an embodiment of the present invention, wherein the outer plate structure of the sill beam is not shown;

[0026] Figure 6 This is a top view of the threshold beam outer plate structure used in the implementation of the present invention, in which the dashed rectangle A represents the area corresponding to the energy absorption channel, and the solid rectangle B represents the bonding and connection area of ​​two corresponding transition plates.

[0027] Figure 7This is a front view of the side impact energy absorption structure assembly provided in an embodiment of the present invention, wherein the outer plate structure of the sill beam is not shown;

[0028] Figure 8 This is a top view of the side impact energy absorption structure assembly provided in an embodiment of the present invention, wherein the outer plate structure of the sill beam is not shown;

[0029] Figure 9 This is a cross-sectional view of the side-impact energy-absorbing structure assembly provided in an embodiment of the present invention.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Sill beam outer panel structure; 110. Side sill beam outer panel; 120. Side sill beam reinforcing plate;

[0032] 2. Threshold beam inner panel structure; 210. Floor threshold beam reinforcement plate;

[0033] 3. Energy-absorbing support component; 301. Energy-absorbing channel; 310. Support plate; 311. Channel plate section; 312. Transition plate section; 313. Channel connecting flange; 314. Transition connecting flange;

[0034] 4. Front crossbeam of the seat;

[0035] 5. Rear crossbeam of the seat;

[0036] 6. Side outer panels;

[0037] 7. Flooring;

[0038] 8. Side impact with a column;

[0039] 9. Inner panel of the column. Detailed Implementation

[0040] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0041] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0042] In the claims, description, and accompanying drawings of this invention, the terms "front" and "rear" refer to the front-rear direction of the vehicle body; the terms "left" and "right" refer to the left-right direction of the vehicle body; the terms "up" and "down" refer to the up-down direction of the vehicle body; the term "inner" refers to the direction towards the passenger compartment; and the term "outer" refers to the direction away from the passenger compartment. Other directional terms, unless otherwise explicitly defined, such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "clockwise," "counterclockwise," "high," and "low," are used to indicate orientation or positional relationships based on the orientation and positional relationships shown in the accompanying drawings. These are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the specific scope of protection of this invention.

[0043] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0044] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0045] In the claims, description and drawings of this invention, if the term "bonding connection" is used, its implementation includes, but is not limited to, bonding followed by welding, bonding followed by connection via threaded connectors, etc.

[0046] Please refer to the following: Figures 1 to 9 The sill beam provided by the present invention will now be described. The sill beam includes an outer sill beam structure 1, an inner sill beam structure 2 disposed inside the outer sill beam structure 1, and an energy-absorbing support member 3 disposed between the outer sill beam structure 1 and the inner sill beam structure 2. The inner side of the inner sill beam structure 2 is connected to the front crossbeam 4 and the rear crossbeam 5 of the seat. The energy-absorbing support member 3 has multiple energy-absorbing channels 301 distributed along the front-rear direction. Each energy-absorbing channel 301 extends along the left-right direction. The vertical width of the energy-absorbing channel 301 gradually decreases from the inside to the outside, and the front-rear width of the energy-absorbing channel 301 remains consistent from the inside to the outside. The outer sill beam structure 1 and the inner sill beam structure 2 cooperate to form the main body of the sill beam, and both the outer sill beam structure 1 and the inner sill beam structure 2 extend along the front-rear direction.

[0047] In this embodiment, the outer side of the sill beam outer panel structure 1 is fitted and connected to the side panel outer panel 6, and the inner side of the sill beam inner panel structure 2 is fitted and connected to the edge of the floor 7, and is also connected to the front seat crossbeam 4 and the rear seat crossbeam 5 on the floor 7. The front seat is mounted on the upper side of the front seat crossbeam 4, and the rear seat is mounted on the upper side of the rear seat crossbeam 5.

[0048] This embodiment exemplarily shows the sill beam located on the left side of the vehicle body. It should be understood that the sill beams on the left and right sides of the vehicle body are symmetrically arranged, and the structure of the sill beam on the other side will not be described in detail here.

[0049] In this embodiment, the cross-section of the outer panel structure 1 of the sill beam is a Z-shape opening inwards, and correspondingly, the cross-section of the inner panel structure 2 of the sill beam is a Z-shape opening outwards, such as... Figure 9 As shown. The outer panel structure 1 and the inner panel structure 2 of the sill beam have high structural strength. When assembled together, the main body of the sill beam also has high structural strength and can provide effective support at the vehicle sill. At the same time, a large space is formed between the outer panel structure 1 and the inner panel structure 2 of the sill beam to accommodate the energy-absorbing support 3, and the energy-absorbing support 3 also forms a sufficiently large energy-absorbing channel 301 to ensure the collapse energy absorption effect.

[0050] In this embodiment, to effectively weaken the strength of the energy-absorbing support 3, the vertical width of the energy-absorbing support 3 gradually decreases from the inside to the outside in the region corresponding to the energy-absorbing channel 301. On a plane parallel to the vertical direction, the cross-section of the region in the energy-absorbing support 3 where the energy-absorbing channel 301 is located is a trapezoid with a narrower outer edge and a wider inner edge. This structure gives the energy-absorbing support 3 a certain structural strength, making it less prone to deformation. Therefore, under normal collision conditions, the energy-absorbing support 3 will not easily deform. Only under a strong collision force will the energy-absorbing support 3 deform preferentially over the front crossbeam 4 and the rear crossbeam 5 of the seat, ensuring the occupant's safety under a strong collision. Based on this, the sidewall thickness of the energy-absorbing channel 301 remains consistent in the inner and outer directions, or the sidewall thickness gradually increases or decreases in the inner and outer directions.

[0051] Compared with the prior art, the sill beam provided in this embodiment, when the side of the vehicle collides with the side impact pillar 8, the side impact pillar 8 transmits the side impact force to the side outer panel 6 and the sill beam outer panel structure 1, and both the side outer panel 6 and the sill beam outer panel structure 1 deform. The deformed sill beam outer panel structure 1 presses inward against the energy-absorbing support member 3. After the energy-absorbing support member 3 is subjected to force, two main situations occur: First, because the energy-absorbing channel 301 of the energy-absorbing support member 3 has a channel structure with a gradually decreasing vertical width and a consistent front and rear width, it can make the energy-absorbing support member 3... The structural strength of the first component is less than that of the front crossbeam 4 and the rear crossbeam 5 of the seat. When the energy-absorbing support 3 is subjected to a large side impact force, it will deform first, forming a collapse energy-absorbing effect and buffering part of the side impact force. Secondly, the energy-absorbing support 3 compresses the inner panel structure 2 of the sill beam. The inner panel structure 2 of the sill beam is connected to the front crossbeam 4 and the rear crossbeam 5 of the seat. The force on the inner panel structure 2 of the sill beam can be dispersed through the two force transmission paths of the front crossbeam 4 and the rear crossbeam 5 of the seat, avoiding the force from being concentrated on the front crossbeam 4 or the rear crossbeam 5 of the seat.

[0052] In this embodiment, the energy-absorbing support 3 can achieve collapse and energy absorption through its own deformation. It can also work with the front seat crossbeam 4 and rear seat crossbeam 5 in the vehicle body to quickly disperse the side impact force. The side impact energy absorption space is transferred from the inside of the sill beam body to the interior of the sill beam body, minimizing the deformation of the front seat crossbeam 4 and rear seat crossbeam 5 in the left and right directions, expanding the survival space, and reducing the injury to personnel caused by the deformation of the vehicle body after a side impact. At the same time, the side impact energy absorption is less affected by the interior space of the sill beam body, and components such as the battery pack can be set closer to the sill beam, that is, the volume of the battery pack can be designed to be larger, which has a positive effect on improving the driving range.

[0053] In addition, under some collision forces, the energy-absorbing support 3 is compressed to its limit and is squeezed and stacked on the outer side of the inner plate structure 2 of the sill beam, increasing the structural strength of the inner plate structure 2 of the sill beam. When the main collapse energy-absorbing space (i.e. the space formed by the energy-absorbing channel 301) is basically exhausted, the overall deformation of the sill beam is further weakened by increasing the structural strength of the inner plate structure 2 of the sill beam, which is conducive to improving the safety of use.

[0054] In some embodiments not shown in the figures, the energy absorption channel 301 may be an ellipse with its major axis parallel to the front-back direction, and the inner port of the energy absorption channel 301 may be circular or elliptical.

[0055] See Figures 1 to 4 and Figure 9In other embodiments, the cross-section of the energy-absorbing channel 301 is polygonal, and the inner port of the energy-absorbing channel 301 is a regular polygon. It should be noted that the sidewalls of the energy-absorbing channel 301 are flat surfaces, meaning the number of sides of the polygon formed by the cross-section of the energy-absorbing channel 301 is equal to the number of sides of the regular polygon formed at its inner port. Specifically, the cross-section of the energy-absorbing channel 301 is a flat N-sided polygon (N is an integer greater than or equal to four), and the inner port of the energy-absorbing channel 301 is a regular N-sided polygon. For example, the cross-section of the energy-absorbing channel 301 is a flat hexagon, and the inner port of the energy-absorbing channel 301 is a regular hexagon; or, the cross-section of the energy-absorbing channel 301 is a flat octagon, and the inner port of the energy-absorbing channel 301 is a regular octagon.

[0056] Taking the case where the cross-section of the energy-absorbing channel 301 is a flat hexagon and the inner port of the energy-absorbing channel 301 is a regular hexagon as an example, the energy-absorbing support 3 has a honeycomb structure as a whole. Its energy-absorbing channel 301 is called a honeycomb mesh structure that is continuously distributed in the front and rear directions. It can disperse the external forces from all directions, improve the resistance of the energy-absorbing support 3 to the compressive force, and ensure that the deformation of the energy-absorbing support 3 will only be triggered after the side impact force reaches a certain threshold. Based on this, under the premise of achieving the preset structural strength, the wall thickness of the energy-absorbing support 1 can be made thinner (for example, by using thin plate parts to manufacture the energy-absorbing support 3), which meets the design requirements of lightweight vehicle body.

[0057] In some more specific embodiments, to better adapt to experimental requirements, the diameter of the side-impact pillar 8 is larger than the distance D1 between two adjacent energy-absorbing channels 301, ensuring that at least two energy-absorbing channels 301 absorb energy during the collision, resulting in more complete energy absorption. In specific implementations, taking a diameter of 254mm for the side-impact pillar 8 as an example, the value of D1 is approximately 165-175mm.

[0058] Based on the above embodiments, see Figure 4 and Figure 9 To ensure the uniformity of force distribution on the energy-absorbing support 3, the energy-absorbing channel 301 is symmetrically arranged vertically. On a plane parallel to the vertical direction and perpendicular to the front-back direction, the outline of the orthographic projection of the energy-absorbing channel 301 is V-shaped. When the energy-absorbing support 3 is compressed, it can collapse more accurately from the inside out, ensuring the reliability of the energy absorption effect.

[0059] In some more specific embodiments, the inner and outer lengths of the energy-absorbing support 3 are greater than the upper and lower widths of the inner port of the energy-absorbing channel 301, and the upper and lower widths of the inner port of the energy-absorbing channel 301 are greater than the upper and lower widths of the outer port of the energy-absorbing channel 301. For different vehicle models, a reasonable size design can better achieve the collapse energy absorption effect. This embodiment further improves the collapse energy absorption effect while ensuring the uniformity of force on the energy-absorbing support 3.

[0060] In some embodiments, the inner and outer lengths of the energy-absorbing channel 301 are greater than the vertical width of the inner port of the energy-absorbing channel 301, and the inner and outer lengths of the energy-absorbing channel 301 are greater than the front and rear width of the inner port of the energy-absorbing channel 301. The longer inner and outer lengths of the energy-absorbing channel 301 result in a longer collapsible energy-absorbing path, which further improves the collapsible energy-absorbing effect while ensuring the uniformity of force distribution on the energy-absorbing support 3. Simultaneously, the more reasonable distribution of the number of energy-absorbing channels 301 in the front and rear directions also contributes to improving the energy-absorbing effect.

[0061] In some specific embodiments, the inner and outer lengths D3 of the energy-absorbing support 3 are 130-135 mm (e.g., 132 mm), the upper and lower widths D4 of the inner port of the energy-absorbing channel 301 are 80-85 mm (e.g., 82 mm), and the upper and lower widths D2 of the outer port of the energy-absorbing channel 301 are 52-58 mm (e.g., 55 mm).

[0062] In some embodiments, the aforementioned threshold beam inner plate structure 2 can be adopted as follows: Figure 9 The structure shown includes a floor sill beam inner plate structure 2 comprising a floor sill beam reinforcing plate 210. The inner edge of the energy-absorbing support 3 is fitted and connected to the outer side of the floor sill beam reinforcing plate 210. The inner side of the floor sill beam reinforcing plate 210 is connected to the front crossbeam 4 and the rear crossbeam 5 of the seat. The inventors have discovered that in existing sill beam structures, to compensate for the defect of the energy absorption space being compressed by the battery pack during a collision, the sill beam structure is generally reinforced. The main means of reinforcement is to set L-shaped, U-shaped, or other types of reinforcing sheet metal on the sill beam (especially the side of the sill beam near the floor) and the energy absorption box to enhance the structural strength of the crumple zone. However, this design increases the amount of sheet metal used, leading to an increase in the overall vehicle weight. Moreover, the improvement in the strength of the crumple zone weakens the energy absorption effect, making it difficult to achieve sufficient energy absorption. In this embodiment, based on transferring the collapse energy absorption space to the inside of the sill beam, a floor sill beam reinforcing plate 210 can be installed on the inner side of the sill beam (i.e., the inner plate structure 2 of the sill beam). While ensuring the collapse energy absorption effect, there is no need to install too many reinforcing sheet metal structures on the floor sill beam reinforcing plate 210, reducing the amount of sheet metal used, which is conducive to the weight reduction design of the sill beam, further improving the driving range, and also avoiding the sill beam being too strong and affecting the collapse energy absorption effect.

[0063] See Figure 9 In some embodiments, the outer edge of the energy-absorbing support 3 is spaced apart from the inner side of the sill beam outer plate structure 1. Under low impact force, the sill beam outer plate structure 1 may undergo slight deformation. Because of the gap between it and the energy-absorbing support 3, the deformation of the sill beam outer plate structure 1 will not affect the structure of the energy-absorbing support 3. During maintenance, only sheet metal reshaping of the sill beam outer plate structure 1 is required.

[0064] More specifically, the sill beam outer plate structure 1 includes a side sill beam outer plate 110 and a side sill beam reinforcing plate 120 connected to the inner side of the side sill beam outer plate 110. The outer edge of the energy-absorbing support member 3 is spaced apart from the inner side of the side sill beam reinforcing plate 120, and the side sill plate 6 is fitted and connected to the outer side of the side sill beam outer plate 110. Since the sill beam outer plate structure 1 is the structure that first bears the side impact force, this embodiment sets the sill beam outer plate structure 1 as a double-layer plate structure to ensure that it has relatively high structural strength and can resist the impact deformation caused by the force of a typical side impact, thus avoiding affecting the internal energy-absorbing support member 3.

[0065] In this embodiment, the cross-section of the outer plate 110 of the side sill beam is a zig-shaped plate with an inward opening, and the cross-section of the reinforcing plate 120 of the side sill beam is a U-shaped plate with an inward opening.

[0066] For ease of manufacturing and assembly, in some embodiments, the energy-absorbing support 3 includes two vertically joined support plates 310, which together form an energy-absorbing channel 301. Figure 1 , Figure 3 and Figure 4 As shown. A single support plate 310 can be formed by stamping and bending.

[0067] See Figures 1 to 4 In some specific embodiments of the support plate 310, the support plate 310 includes channel plate portions 311 and transition plate portions 312 alternately distributed along the front-back direction. The channel plate portions 311 of two support plates 310 are joined to form an energy-absorbing channel 301, and the transition plate portions 312 of two support plates 310 are fitted together. After the two support plates 310 are joined, the area where the energy-absorbing channel 310 is located ( Figure 6 The area where the dashed rectangle A in the figure fits and connects with the transition plate 312 ( Figure 6 The rectangular frames B are alternately distributed along the front and back directions. The integrality of the energy-absorbing support 3 in the front and back directions is ensured by the fitting connection of the transition plate 312, while also meeting the distribution requirements of the energy-absorbing channel 301.

[0068] Based on the above embodiments, see Figures 1 to 4 In order to improve the bonding strength between the energy-absorbing support 3 and the floor threshold beam reinforcement plate 210, the inner edge of the channel plate 311 is bent in the direction away from the energy-absorbing channel to form a channel connecting flange 313, and the inner edge of the transition plate 312 is bent to form a transition connecting flange 314; both the channel connecting flange 313 and the transition connecting flange 314 are attached to the outer surface of the floor threshold beam reinforcement plate 210.

[0069] Based on the above embodiments, see Figures 1 to 4In order to satisfy the symmetrical structural design of the energy absorption channel 301, the two support plates 310 are symmetrically arranged about the mating connection surface between the two support plates 310 (i.e. the mating connection surface between the two transition plate parts 312).

[0070] See Figures 5 to 8 In some embodiments, the energy-absorbing support 3 extends from the front of the sill beam outer panel structure 1 to the rear of the sill beam outer panel structure 1. The inventors have found that existing sill beam protection is mainly based on the center of the front passenger's head, with poor protection in other areas (such as the area where the rear seats are located), making it difficult to provide comprehensive protection. In this embodiment, the energy-absorbing support 3 can more comprehensively cover the main body of the sill beam in the front-rear direction. For typical vehicle models, the energy-absorbing support 3 can extend from the A-pillar to the C-pillar, providing a wider protection range and improving the safety of rear passengers.

[0071] Based on the same inventive concept, this application also provides a side impact energy absorption structure assembly, including a side outer panel 6, the aforementioned sill beam, the front seat crossbeam 4, and the rear seat crossbeam 5. In the sill beam, the outer panel structure 1 is fitted and connected to the side outer panel 6, and the inner side of the inner panel structure 2 is connected to the front seat crossbeam 4 and the rear seat crossbeam 5. The front seat crossbeam 4 and the rear seat crossbeam 5 both extend in the left-right direction, while the outer panel structure 1 and the inner panel structure 2 of the sill beam both extend in the front-back direction.

[0072] Compared with the prior art, the side impact energy absorption structure assembly provided in this embodiment, by adopting the aforementioned sill beam, shifts the side impact energy absorption space from the inner side of the sill beam body to the interior of the sill beam body, minimizing the deformation of the front seat crossbeam 4 and the rear seat crossbeam 5 in the left and right directions, expanding the survival space, and reducing the injury to occupants caused by vehicle deformation after a side impact. At the same time, the side impact energy absorption is less affected by the inner space of the sill beam body, and components such as the battery pack can be placed closer to the sill beam, meaning the battery pack volume can be designed to be larger, which has a positive effect on improving the driving range and balances the performance requirements of battery pack capacity and side impact safety.

[0073] Based on the same inventive concept, this application also provides a vehicle including the above-described side-impact energy absorption structure assembly.

[0074] Compared with the prior art, the vehicle provided in this embodiment balances the performance requirements of battery pack capacity and side-impact safety by adopting the above-mentioned side-impact energy absorption structure assembly, thereby improving the overall safety and user experience of the vehicle.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A door sill beam, characterized in that, It includes a sill beam outer plate structure (1), a sill beam inner plate structure (2) disposed inside the sill beam outer plate structure (1), and an energy-absorbing support (3) disposed between the sill beam outer plate structure (1) and the sill beam inner plate structure (2). The inner side of the sill beam inner plate structure (2) is connected to the front crossbeam (4) and the rear crossbeam (5) of the seat. The energy-absorbing support (3) has multiple energy-absorbing channels (301) distributed along the front-back direction. Each energy-absorbing channel (301) is connected along the left-right direction. The vertical width of the energy-absorbing channel (301) gradually decreases from the inside to the outside, and the front-back width of the energy-absorbing channel (301) remains consistent from the inside to the outside. The threshold beam inner plate structure (2) includes a floor threshold beam reinforcing plate (210), and the inner edge of the energy-absorbing support (3) is attached to the outer side of the floor threshold beam reinforcing plate (210). The energy-absorbing support (3) includes two support plates (310) that are joined together vertically, and the two support plates (310) enclose each other to form the energy-absorbing channel (301). The support plate (310) includes channel plate portions (311) and transition plate portions (312) that are alternately distributed in the front-back direction. The channel plate portions (311) of the two support plates (310) are joined together to form the energy absorption channel (301), and the transition plate portions (312) of the two support plates (310) are attached to each other. The inner edge of the channel plate (311) is bent away from the energy absorption channel to form a channel connection flange (313), and the inner edge of the transition plate (312) is bent to form a transition connection flange (314); both the channel connection flange (313) and the transition connection flange (314) are attached to the outer side of the floor threshold beam reinforcement plate (210).

2. The threshold beam as described in claim 1, characterized in that, The cross-section of the energy-absorbing channel (301) is polygonal, and the inner port of the energy-absorbing channel (301) is a regular polygon.

3. The sill beam as described in claim 2, characterized in that, The energy absorption channel (301) is a channel arranged symmetrically at the top and bottom.

4. The threshold beam as described in claim 1, characterized in that, The inner and outer lengths of the energy-absorbing channel (301) are greater than the upper and lower widths of the inner port of the energy-absorbing channel (301), and the inner and outer lengths of the energy-absorbing channel (301) are greater than the front and back widths of the inner port of the energy-absorbing channel (301).

5. The sill beam as described in any one of claims 1-4, characterized in that, The inner side of the floor threshold beam reinforcement plate (210) is connected to the front crossbeam (4) and the rear crossbeam (5) of the seat.

6. The threshold beam as described in claim 1, characterized in that, The energy-absorbing support (3) extends from the front of the sill beam outer plate structure (1) to the rear of the sill beam outer plate structure (1).

7. A side-impact energy-absorbing structure assembly, characterized in that, Includes a side panel (6), a sill beam as described in any one of claims 1-6, a front crossbeam (4) of the seat, and a rear crossbeam (5) of the seat. In the sill beam, the outer panel structure (1) of the sill beam is fitted and connected to the side panel (6), and the inner side of the inner panel structure (2) of the sill beam is connected to the front crossbeam (4) of the seat and the rear crossbeam (5).

8. A vehicle, characterized in that, Includes the side-impact energy-absorbing structure assembly as described in claim 7.

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