Threshold beam, side impact energy absorption structure assembly and vehicle

Abstract

The invention provides a doorsill beam, a side collision energy absorption structure assembly and a vehicle, and belongs to the technical field of vehicle parts, the doorsill beam comprises a doorsill beam outer plate structure, a doorsill beam inner plate structure arranged on the inner side of the doorsill beam outer plate structure, and an energy absorption supporting piece arranged between the doorsill beam outer plate structure and the doorsill beam inner plate structure, the inner side of the doorsill beam inner plate structure is connected with a seat front cross beam and a seat rear cross beam; the energy-absorbing supporting piece is provided with a plurality of energy-absorbing channels distributed in the front-back direction, each energy-absorbing channel is communicated in the left-right direction, the up-down width of each energy-absorbing channel is gradually reduced from inside to outside, and the front-back width of each energy-absorbing channel is kept consistent from inside to outside. The side collision energy absorption space is transferred from the inner side of the doorsill beam body to the interior of the doorsill beam body, the deformation degree of the seat front cross beam and the seat rear cross beam in the left-right direction is reduced to the maximum extent, the harm of vehicle body deformation to personnel after side collision is reduced, the size of the battery pack can be designed to be large, and the endurance mileage can be increased.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicle components, and in particular relates to a door sill beam, a side impact energy absorption structure assembly and a vehicle. Background Art

[0002] With the popularization of new energy vehicles, the safety standards of new energy vehicles are also constantly improving. The side pole impact standard requirement is an important standard for vehicle installation, and its performance is mainly tested through the side pole impact test. In new energy vehicles, it is necessary to arrange the battery pack at the bottom of the vehicle. In order to improve the vehicle's cruising range, the size of the battery pack is constantly increasing. In the left and right directions of the vehicle body, the edge of the battery pack is getting closer and closer to the side rocker beam, and the space inside the side rocker beam is compressed, and the collision energy absorption space is reduced, which affects the setting of the energy absorption box inside the rocker beam, and directly affects the side collision safety index. Summary of the invention

[0003] The embodiments of the present invention provide a sill beam, a side impact energy absorption structure assembly and a vehicle, aiming to solve the problem in the prior art that the design of the battery pack occupies the side impact energy absorption space on the inner side of the sill beam, resulting in the side impact safety performance being affected.

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

[0005] In a first aspect, a threshold beam is provided, comprising:

[0006] A threshold beam outer plate structure, a threshold beam inner plate structure provided inside the threshold beam outer plate structure, and an energy absorbing support member provided 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 to a front cross beam of a seat and a rear cross beam of a seat;

[0007] The energy absorbing support has a plurality of energy absorbing channels distributed along the front-to-back direction, each of the energy absorbing channels penetrates along the left-to-right direction, the upper and lower widths of the energy absorbing channels gradually decrease from the inside to the outside, and the front-to-back widths of the energy absorbing channels remain consistent from the inside to the outside.

[0008] In combination with the first aspect, in a possible implementation manner, a cross-section of the energy absorption channel is a polygon, and an inner port of the energy absorption channel is a regular polygon.

[0009] In some embodiments, the energy absorption channel is a channel that is symmetrically arranged up and down.

[0010] In combination with the first aspect, in a possible implementation manner, the inner and outer lengths of the energy absorption channel are greater than the upper and lower widths of the port in the energy absorption channel, and the inner and outer lengths of the energy absorption channel are greater than the front and rear widths of the port in the energy absorption channel.

[0011] In combination with the first aspect, in a possible implementation, the sill beam inner plate structure includes a floor sill beam reinforcement plate, the inner edge of the energy absorbing support member is fit-connected to the outer side surface of the floor sill beam reinforcement plate, the inner side surface of the floor sill beam reinforcement plate is fit-connected to the edge of the floor, and the inner side of the floor sill beam reinforcement plate is connected to the front cross beam of the seat and the rear cross beam of the seat.

[0012] In combination with the first aspect, in a possible implementation manner, the energy absorbing support member includes two support plates butted against each other up and down, and the two support plates enclose each other to form the energy absorbing channel.

[0013] In some embodiments, the support plate includes a channel plate portion and a transition plate portion alternately distributed along the front-to-back direction, the channel plate portions in two support plates are matched to form the energy absorption channel, and the transition plate portions in two support plates are fitted and connected to each other.

[0014] In combination with the first aspect, in a possible implementation manner, the energy absorbing support member extends from a front portion of the rocker beam outer panel structure to a rear portion of the rocker beam outer panel structure.

[0015] Compared with the prior art, the solution shown in the embodiment of the present application is that when the side of the vehicle collides with the side impact column, the side impact column transmits the side impact force to the side panel outer plate and the door sill beam outer plate structure, and both the side panel outer plate and the door sill beam outer plate structure are deformed. The deformed door sill beam outer plate structure squeezes the energy absorbing support member inwardly. After the energy absorbing support member is subjected to force, two situations mainly occur: first, since the energy absorbing channel of the energy absorbing support member is a channel structure with gradually decreasing widths up and down and consistent widths front and back, the structural strength of the energy absorbing support member can be made smaller than the strength of the front cross beam and the rear cross beam of the seat. After the energy absorbing support member is subjected to a large side impact force, it is deformed first to form a crushing energy absorption effect, thereby buffering a part of the side impact force; second, the energy absorbing support member squeezes the door sill beam inner plate structure, and the door sill beam inner plate structure is connected to the front cross beam and the rear cross beam of the seat. The force exerted on the door sill beam inner plate structure can be dispersed through the two force transmission paths of the front cross beam and the rear cross beam of the seat, thereby avoiding the force being concentrated on the front cross beam or the rear cross beam of the seat.

[0016] The energy-absorbing support member of the present application can achieve crushing energy absorption through its own deformation, and can also cooperate with the front seat beam and the rear seat beam in the vehicle body to quickly disperse the side impact force. The side impact energy absorption space is transferred from the inner side of the sill beam body to the inner side of the sill beam body, thereby minimizing the deformation of the front seat beam and the rear seat beam in the left and right directions, expanding the survival space, and reducing the damage to personnel caused by body 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, and components such as the battery pack can be arranged closer to the sill beam, that is, the volume of the battery pack can be designed to be larger, which has a positive promoting effect on improving the cruising range.

[0017] In the second aspect, an embodiment of the present invention further provides a side impact energy absorption structure assembly, including a side outer panel, the above-mentioned door sill beam, a seat front cross beam and a seat rear cross beam, in which the door sill beam outer panel structure is fitted and connected to the side outer panel, and the inner side of the door sill beam inner panel structure is connected to the seat front cross beam and the seat rear cross beam.

[0018] Compared with the prior art, the solution shown in the embodiment of the present application adopts the above-mentioned threshold beam, so that the side impact energy absorption space is transferred from the inner side of the threshold beam body to the inner side of the threshold beam body, thereby minimizing the deformation of the front cross beam and the rear cross beam of the seat in the left and right directions, expanding the survival space, and reducing the damage to personnel caused by the deformation of the car body after a side impact. At the same time, the side impact energy absorption is less affected by the space inside the threshold beam body, and components such as the battery pack can be arranged closer to the threshold beam, that is, the volume of the battery pack can be designed to be larger, which has a positive promoting effect on improving the cruising range and balances the performance requirements of the battery pack capacity and side impact safety.

[0019] In a third aspect, an embodiment of the present invention further provides a vehicle, comprising the above-mentioned side impact energy absorption structure assembly.

[0020] Compared with the prior art, the solution shown in the embodiment of the present application 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 usability of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional diagram of an energy-absorbing support member used in an embodiment of the present invention;

[0022] Figure 2 A top view of an energy absorbing support member used in an embodiment of the present invention;

[0023] Figure 3 for Figure 2 A schematic diagram of a local structure viewed from above;

[0024] Figure 4 for Figure 3 Schematic diagram of the left view structure;

[0025] Figure 5 A three-dimensional diagram of a side impact energy absorption structure assembly provided by an embodiment of the present invention, wherein the rocker beam outer plate structure is not shown;

[0026] Figure 6 It is a top view of the sill beam outer plate structure used in the implementation of the present invention, wherein the dotted rectangular frame A represents the area corresponding to the energy absorption channel, and the solid rectangular frame B represents the fitting connection area of ​​two corresponding transition plate parts;

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

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

[0029] Fig. 9 A cross-sectional view of a side impact energy absorption structure assembly provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Door sill beam outer plate structure; 110. Side door sill beam outer plate; 120. Side door sill beam reinforcement plate;

[0032] 2. Door sill beam inner plate structure; 210. Floor door sill beam reinforcement plate;

[0033] 3. Energy absorbing support member; 301. Energy absorbing channel; 310. Support plate; 311. Channel plate portion; 312. Transition plate portion; 313. Channel connection flange; 314. Transition connection flange;

[0034] 4. Seat front beam;

[0035] 5. Seat rear beam;

[0036] 6. Side outer panels;

[0037] 7. Floor;

[0038] 8. Side impact column;

[0039] 9. Inner plate of column. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] In the claims, description and the above-mentioned drawings of the present invention, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. are for distinguishing different objects rather than for describing a specific order.

[0042] In the claims, specification and the above-mentioned drawings of the present invention, the terms "front" and "rear" are the same as the front-to-rear direction of the vehicle body, the terms "left" and "right" are the same as the left-to-right direction of the vehicle body, the terms "up" and "down" are the same as the up-down direction of the vehicle body, the term "inside" refers to the direction toward the passenger compartment, and the term "outside" refers to the direction away from the passenger compartment. The remaining directional words, unless otherwise clearly defined, such as the use of terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low" and the like to indicate directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so they cannot be understood as limiting the specific protection scope of the present invention.

[0043] In the claims, specification and the above drawings of the present invention, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0044] In the claims, description and drawings of the present invention, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0045] In the claims, specification and the above-mentioned drawings of the present invention, if the term "bonding connection" is used, its implementation methods include but are not limited to welding after bonding, connecting through threaded connectors after bonding, etc.

[0046] Please also read Figures 1 to 9 The threshold beam provided by the present invention is now described. The threshold beam comprises a threshold beam outer plate structure 1, a threshold beam inner plate structure 2 arranged inside the threshold beam outer plate structure 1, and an energy absorbing support member 3 arranged between the threshold beam outer plate structure 1 and the threshold beam inner plate structure 2, the inner side of the threshold beam inner plate structure 2 is connected to the front cross beam 4 and the rear cross beam 5 of the seat; the energy absorbing support member 3 has a plurality of energy absorbing channels 301 distributed along the front-to-back direction, each energy absorbing channel 301 is through in the left-to-right direction, the upper and lower widths of the energy absorbing channels 301 gradually decrease from the inside to the outside, and the front-to-back widths of the energy absorbing channels 301 remain the same from the inside to the outside. Among them, the threshold beam outer plate structure 1 and the threshold beam inner plate structure 2 cooperate to form the threshold beam body, and the threshold beam outer plate structure 1 and the threshold beam inner plate structure 2 both extend along the front-to-back direction.

[0047] In this embodiment, the outer side surface of the sill beam outer panel structure 1 is adhesively connected to the outer panel of the side wall 6, and the inner side surface of the sill beam inner panel structure 2 is adhesively connected to the edge of the floor 7 and is also connected to the front seat cross member 4 and the rear seat cross member 5 on the floor 7. Among them, the front row seat is installed on the upper side of the front seat cross member 4, and the rear row seat is installed on the upper side of the rear seat cross member 5.

[0048] In this embodiment, the sill beam located on the left side of the vehicle body is exemplarily shown. It should be understood that the sill beams on both 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 elaborated here.

[0049] In this embodiment, the cross-section of the sill beam outer panel structure 1 is in a U-shape opening inward, and correspondingly, the cross-section of the sill beam inner panel structure 2 is in a U-shape opening outward, as Fig. 9 shown. The sill beam outer panel structure 1 and the sill beam inner panel structure 2 themselves have relatively high structural strength, and the sill beam body formed after being assembled together also has relatively high structural strength, which can play an effective supporting role at the position of the vehicle body sill; at the same time, a relatively large space is formed between the sill beam outer panel structure 1 and the sill beam inner panel structure 2 to accommodate the energy-absorbing support member 3, and a sufficiently large energy-absorbing channel 301 is also formed for the energy-absorbing support member 3 to ensure the energy-absorbing effect of collapse.

[0050] In this embodiment, in order to effectively weaken the strength of the energy-absorbing support member 3, in the area corresponding to the energy-absorbing channel 301, the vertical width of the energy-absorbing support member 3 gradually decreases from the inside to the outside. In a plane parallel to the vertical direction, the cross-section of the area where the energy-absorbing channel 301 is arranged in the energy-absorbing support member 3 is in a trapezoid shape with a narrow outside and a wide inside. This structure enables the energy-absorbing support member 3 to have a certain structural strength and is not easily deformed. Therefore, in general collisions, the energy-absorbing support member 3 will not easily deform. Only under the action of a relatively large collision force, the energy-absorbing support member 3 deforms prior to the front seat cross member 4 and the rear seat cross member 5, ensuring the riding safety of the occupants under a strong collision. Based on this, the side wall thickness of the energy-absorbing channel 301 remains consistent in the inside-outside direction, or the side wall thickness of the energy-absorbing channel 301 gradually increases in the inside-outside direction, or the side wall thickness of the energy-absorbing channel 301 gradually decreases in the inside-outside direction.

[0051] Compared with the prior art, 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 are deformed, and the deformed sill beam outer panel structure 1 presses the energy absorbing support member 3 inwardly. After the energy absorbing support member 3 is subjected to force, two situations mainly occur: first, since the energy absorbing channel 301 of the energy absorbing support member 3 is a channel structure with gradually decreasing width from top to bottom and maintaining the same width from front to back, the energy absorbing support member 3 can be made The structural strength of the seat is less than that of the front crossbeam 4 and the rear crossbeam 5 of the seat. After the energy-absorbing support member 3 is subjected to a large side impact force, it is deformed first to form a collapse energy-absorbing effect, thereby buffering a part of the side impact force; secondly, the energy-absorbing support member 3 squeezes the sill beam inner plate structure 2, and the sill beam inner plate structure 2 is connected to the front crossbeam 4 and the rear crossbeam 5 of the seat. The force exerted on the sill beam inner plate structure 2 can be dispersed through the two force transmission paths of the front crossbeam 4 and the rear crossbeam 5 of the seat, thereby avoiding the force being concentrated on the front crossbeam 4 or the rear crossbeam 5 of the seat.

[0052] The energy-absorbing support member 3 of the present embodiment can realize crushing energy absorption through its own deformation, and can also cooperate with the front seat beam 4 and the rear seat beam 5 in the vehicle body to quickly disperse the side impact force. The side impact energy absorption space is transferred from the inner side of the sill beam body to the inner side of the sill beam body, thereby minimizing the deformation degree of the front seat beam 4 and the rear seat beam 5 in the left and right directions, expanding the survival space, and reducing the damage 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 space inside the sill beam body, and components such as the battery pack can be arranged closer to the sill beam, that is, the volume of the battery pack can be designed to be larger, which has a positive promoting effect on improving the cruising range.

[0053] In addition, in some cases of greater collision force, the energy-absorbing support member 3 is compressed to the limit, and it is squeezed and stacked to the outer side of the sill beam inner plate structure 2, thereby increasing the structural strength of the sill beam inner plate structure 2. When the main crush energy absorption space (i.e., the space formed by the energy absorption channel 301) is basically exhausted, the overall deformation degree of the sill beam is further weakened by increasing the structural strength of the sill beam inner plate structure 2, thereby facilitating improved safety in use.

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

[0055] See also Figures 1 to 4 and Fig. 9In other embodiments, the cross section of the energy absorption channel 301 is a polygon, and the inner port of the energy absorption channel 301 is a regular polygon. It should be noted that the side wall surface of the energy absorption channel 301 is a flat surface, that is, the number of sides of the polygon presented by the cross section of the energy absorption channel 301 is equal to the number of sides of the regular polygon presented at its inner port, that is, the cross section of the energy absorption channel 301 is a flat N (N is an integer greater than or equal to four) polygon, and the inner port of the energy absorption channel 301 is a regular N polygon. For example, the cross section of the energy absorption channel 301 is a flat hexagon, and the inner port of the energy absorption channel 301 is a regular hexagon; or, the cross section of the energy absorption channel 301 is a flat octagon, and the inner port of the energy absorption 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 as a whole has a honeycomb structure, and its energy absorbing channel 301 is a honeycomb mesh structure continuously distributed along the front-to-back direction, which can disperse the external forces from all directions, enhance the resistance of the energy absorbing support 3 to the extrusion force, and ensure that the deformation of the energy absorbing support 3 is triggered only after the side collision force reaches a certain threshold. Based on this, on the premise of achieving the preset structural strength, the wall thickness of the energy absorbing support 1 can also be made thinner (for example, the energy absorbing support 3 is manufactured using thin plate parts), thereby meeting the design requirements of lightweight vehicle body.

[0057] In some more specific embodiments, in order to better meet the test requirements, the diameter of the side impact column 8 is greater than the distance D1 between two adjacent energy absorption channels 301, so as to ensure that there are at least two energy absorption channels 301 to absorb energy during the collision, and the energy absorption is more sufficient. In specific implementation, taking the diameter of the side impact column 8 as 254 mm as an example, the value of D1 is about 165-175 mm.

[0058] Based on the above embodiments, see Figure 4 and Fig. 9 In order to ensure the uniformity of the force on the energy absorbing support 3, the energy absorbing channel 301 is a channel symmetrically arranged up and down, and the contour line of the positive projection of the energy absorbing channel 301 on the surface parallel to the up and down direction and perpendicular to the front and back direction is V-shaped. After the energy absorbing support 3 is compressed, the energy absorbing support 3 can collapse from the inside to the outside more accurately, ensuring the reliability of the energy absorbing effect.

[0059] In some more specific embodiments, the inner and outer lengths of the energy absorbing support member 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, reasonable size design can better achieve the crushing energy absorption effect. This embodiment further improves the crushing energy absorption effect on the basis of ensuring the uniformity of the force of the energy absorbing support member 3.

[0060] In some embodiments, the inner and outer lengths of the energy absorption channel 301 are greater than the upper and lower widths of the ports in the energy absorption channel 301, and the inner and outer lengths of the energy absorption channel 301 are greater than the front and rear widths of the ports in the energy absorption channel 301. The energy absorption channel 301 has a long inner and outer length and a long collapse energy absorption path. On the basis of ensuring the uniform force of the energy absorption support 3, the collapse energy absorption effect is further improved. At the same time, the number distribution of the energy absorption channels 301 in the front and rear directions is more reasonable, which is also conducive to improving the energy absorption effect.

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

[0062] In some embodiments, the sill beam inner plate structure 2 may be Fig. 9 In the structure shown, the sill beam inner plate structure 2 includes a floor sill beam reinforcement plate 210, the inner edge of the energy absorption support member 3 is fitted and connected to the outer side of the floor sill beam reinforcement plate 210, and the inner side of the floor sill beam reinforcement plate 210 is connected to the front cross beam 4 and the rear cross beam 5 of the seat. The inventor found that in the existing sill beam structure, in order to make up for the defect that the collision energy absorption space is compressed by the battery pack, the sill beam structure is generally strengthened. The main means of strengthening is to set L-shaped, U-shaped and other configurations of reinforced sheet metal on the sill beam (especially the side of the sill beam close to the floor) and the energy absorption box to enhance the structural strength of the crumple energy absorption area. However, this design increases the use of sheet metal parts, resulting in an increase in the weight of the entire vehicle. In addition, the improvement of the strength of the crumple energy absorption area also weakens the energy absorption effect, making it difficult to achieve sufficient energy absorption. In this embodiment, based on transferring the crush energy absorption space to the inside of the sill beam, a floor sill beam reinforcement plate 210 can be provided on the inner side of the sill beam (i.e., the sill beam inner plate structure 2). Under the premise of ensuring the crush energy absorption effect, there is no need to provide too much reinforced sheet metal structure on the floor sill beam reinforcement plate 210, thereby reducing the use of sheet metal parts, which is beneficial to the weight reduction design of the sill beam and further improves the cruising range. At the same time, it also avoids the excessive strength of the sill beam affecting the crush energy absorption effect.

[0063] See also Fig. 9 In some embodiments, the outer edge of the energy absorbing support member 3 is spaced from the inner side of the sill beam outer panel structure 1. When the collision force is not strong, the sill beam outer panel structure 1 is slightly deformed. Since there is a gap between it and the energy absorbing support member 3, the deformation of the sill beam outer panel structure 1 will not affect the structure of the energy absorbing support member 3. When repairing, only the sheet metal shaping of the sill beam outer panel structure 1 is required.

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

[0065] In this embodiment, the cross section of the side sill beam outer plate 110 is an inwardly open "X"-shaped plate, and the cross section of the side sill beam reinforcement plate 120 is an inwardly open "U"-shaped plate.

[0066] In order to facilitate manufacturing and assembly, in some embodiments, the energy absorbing support member 3 includes two upper and lower butted support plates 310, and the two support plates 310 enclose an energy absorbing channel 301, such as Figure 1 , Figure 3 and Figure 4 As shown, the single support plate 310 can be formed by stamping and bending.

[0067] See also Figures 1 to 4 In some specific embodiments of the support plate 310, the support plate 310 includes a channel plate portion 311 and a transition plate portion 312 alternately distributed along the front-to-back direction, the channel plate portions 311 in the two support plates 310 are matched to form an energy absorption channel 301, and the transition plate portions 312 in the two support plates 310 are connected to each other. After the two support plates 310 are connected, the area where the energy absorption channel 310 is located ( Figure 6 The dotted rectangular box A in the figure) and the fitting connection area of ​​the transition plate portion 312 ( Figure 6 The rectangular frame B) is alternately distributed along the front-to-back direction, and the integrity of the energy absorbing support 3 in the front-to-back direction is ensured by the fitting connection of the transition plate portion 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 member 3 and the floor sill beam reinforcement plate 210, the inner edge of the channel plate portion 311 is bent in a direction away from the energy absorbing channel to form a channel connecting flange 313, and the inner edge of the transition plate portion 312 is bent to form a transition connecting flange 314; the channel connecting flange 313 and the transition connecting flange 314 are both fitted and connected to the outer side surface of the floor sill beam reinforcement plate 210.

[0069] Based on the above embodiments, see Figures 1 to 4In order to satisfy the structural design of the energy absorption channel 301 being symmetrical in the upper and lower directions, the two support plates 310 are symmetrically arranged about the fitting connection surface between the two support plates 310 (ie, the fitting connection surface of the two transition plate portions 312 ).

[0070] See also Figures 5 to 8 In some embodiments, the energy absorbing support member 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 found that the protection of the existing sill beam is mainly based on the center of the head of the front occupants, and the protection effect of other positions (such as the area where the rear seats are located) is poor, and it is difficult to form comprehensive protection. The energy absorbing support member 3 of this embodiment can more comprehensively cover the main body of the sill beam in the front-to-back direction. For general models, the energy absorbing support member 3 can extend from the position of the A-pillar to the position of the C-pillar, with a larger protection range, which improves the riding safety of the rear occupants.

[0071] Based on the same inventive concept, the embodiment of the present application also provides a side impact energy absorption structure assembly, including a side outer panel 6, the above-mentioned sill beam, a seat front cross beam 4 and a seat rear cross beam 5. In the sill beam, the sill beam outer panel structure 1 is connected to the side outer panel 6, and the inner side of the sill beam inner panel structure 2 is connected to the seat front cross beam 4 and the seat rear cross beam 5. Among them, the seat front cross beam 4 and the seat rear cross beam 5 both extend in the left-right direction, and the sill beam outer panel structure 1 and the sill beam inner panel structure 2 both extend in the front-back direction.

[0072] Compared with the prior art, the side impact energy absorption structure assembly provided in the present embodiment adopts the above-mentioned threshold beam, and the side impact energy absorption space is transferred from the inner side of the threshold beam body to the inside of the threshold beam body, thereby minimizing the deformation of the front seat beam 4 and the rear seat beam 5 in the left and right directions, expanding the survival space, and reducing the damage 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 space inside the threshold beam body, and components such as the battery pack can be arranged closer to the threshold beam, that is, the volume of the battery pack can be designed to be larger, which has a positive effect on improving the cruising range and balances the performance requirements of the battery pack capacity and side impact safety.

[0073] Based on the same inventive concept, an embodiment of the present application also provides a vehicle, including the above-mentioned 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 safety and usage quality of the entire 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 in the protection scope of the present invention.

Claims

1. A threshold beam, characterized in that: The invention comprises a threshold beam outer plate structure (1), a threshold beam inner plate structure (2) arranged inside the threshold beam outer plate structure (1), and an energy absorbing support member (3) arranged between the threshold beam outer plate structure (1) and the threshold beam inner plate structure (2), wherein the inner side of the threshold beam inner plate structure (2) is connected to a front cross beam (4) and a rear cross beam (5) of a seat; The energy absorbing support member (3) has a plurality of energy absorbing channels (301) distributed along the front-to-back direction, each of the energy absorbing channels (301) is connected along the left-to-right direction, the upper and lower widths of the energy absorbing channels (301) gradually decrease from the inside to the outside, and the front-to-back widths of the energy absorbing channels (301) remain consistent from the inside to the outside.

2. The threshold beam according to claim 1, characterized in that: The cross section of the energy absorbing channel (301) is polygonal, and the inner end of the energy absorbing channel (301) is a regular polygon.

3. The door sill beam according to claim 2, characterized in that: The energy absorption channel (301) is a channel that is symmetrically arranged up and down.

4. The threshold beam according to 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 rear widths of the inner port of the energy absorbing channel (301).

5. The door sill beam according to any one of claims 1 to 4, characterized in that: The sill beam inner plate structure (2) comprises a floor sill beam reinforcement plate (210), the inner edge of the energy absorbing support member (3) is fitted and connected to the outer side surface of the floor sill beam reinforcement plate (210), and the inner side of the floor sill beam reinforcement plate (210) is connected to the front seat cross beam (4) and the rear seat cross beam (5).

6. The door sill beam according to any one of claims 1 to 4, characterized in that: The energy absorbing support member (3) comprises two support plates (310) butted against each other up and down, and the two support plates (310) are enclosed to form the energy absorbing channel (301).

7. The door sill beam according to claim 6, characterized in that: The support plate (310) comprises a channel plate portion (311) and a transition plate portion (312) alternately distributed along the front-to-back direction; the channel plate portions (311) in the two support plates (310) are matched to form the energy absorption channel (301); and the transition plate portions (312) in the two support plates (310) are mutually fitted and connected.

8. The door sill beam according to claim 1, characterized in that: The energy absorbing support member (3) extends from the front portion of the rocker beam outer panel structure (1) to the rear portion of the rocker beam outer panel structure (1).

9. A side impact energy absorption structure assembly, characterized in that: It comprises a side outer panel (6), a sill beam as described in any one of claims 1 to 8, a seat front cross beam (4) and a seat rear cross beam (5), wherein in the sill beam, the sill beam outer panel structure (1) is fitted and connected to the side outer panel (6), and the inner side of the sill beam inner panel structure (2) is connected to the seat front cross beam (4) and the seat rear cross beam (5).

10. A vehicle, characterized in that: It comprises a side impact energy absorption structure assembly as claimed in any one of claims 9.

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