Threshold beam, threshold assembly and vehicle

Abstract

The invention discloses a threshold beam, a threshold assembly and a vehicle, the threshold beam comprises a first cavity and a second cavity which are adjacently arranged, the first cavity is arranged close to the interior of the vehicle, the second cavity is arranged close to the exterior of the vehicle, and the upper wall and / or the lower wall of the first cavity extends out of the second cavity in the Z-axis direction; an acute angle is formed between the upper wall and / or the lower wall of the first cavity and the inner side wall of the first cavity. The threshold beam can be deformed by guiding collision, the force transmission path is coherent and efficient, the energy absorption effect is better, the collision force is effectively dispersed, and the safety performance is improved.

Description

Technical Field

[0001] The present application relates to the technical field of sill beams, and particularly to a sill beam, a sill assembly, and a vehicle. Background Art

[0002] The sill beam is an important supporting component related to the vehicle body side panel. The sill beam is usually arranged in a cavity formed by an outer sill panel and an inner sill panel, playing a role in strengthening the structural stiffness, being able to effectively disperse the impact force of a collision at the lower part of the vehicle body side panel, and improving the safety performance of the vehicle.

[0003] The existing sill beams are designed in structures such as a square shape, a rectangular shape with a crossbar in the middle, a cross shape, or other structures with multiple equal cavity space layouts. However, currently, there is a problem that the sill beam is difficult to deform, easily directly transmits the side collision force to the inner sill panel and the vehicle bottom parts without energy absorption through deformation, resulting in large deformations of the inner sill panel and the vehicle bottom parts, and insufficient protection for the internal power battery of the vehicle. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems, and provide a sill beam, a sill assembly, and a vehicle, so as to enable the sill beam to guide the collision deformation, the force transmission path to be coherent and efficient, the energy absorption effect to be better, effectively disperse the collision force, and improve the safety performance. To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] The sill beam includes a first cavity and a second cavity arranged adjacent to each other. The first cavity is arranged close to the interior of the vehicle, and the second cavity is arranged close to the exterior of the vehicle. The upper wall and / or the lower wall of the first cavity extends out of the second cavity along the Z-axis direction, and the upper wall and / or the lower wall of the first cavity forms an acute angle with the inner side wall of the first cavity.

[0006] Specifically, the sill beam is separated into the first cavity and the second cavity by a connecting wall, and the cross-sectional area of the second cavity is smaller than that of the first cavity.

[0007] Specifically, the connecting wall is arranged along the Z-axis direction. A first bending portion is arranged at the upper end of the connecting wall, and the first bending portion extends to the upper wall of the second cavity. A second bending portion is arranged at the lower wall of the second cavity, and the second bending portion extends to the lower end of the connecting wall.

[0008] Specifically, the lower end of the inner side wall of the first cavity extends downward along the Z-axis direction relative to the lower end of the connecting wall. The lower wall of the first cavity includes an inclined portion and a transition portion connected to each other. The end of the inclined portion is connected to the lower end of the inner side wall, and the end of the transition portion is connected to the lower end of the connecting wall. The transition portion is arranged in alignment with the lower wall of the second cavity along the Y-axis direction.

[0009] Specifically, the inner side wall of the first cavity includes a reinforcement portion and a side wall body respectively connecting two ends of the reinforcement portion, and the reinforcement portion protrudes toward the first cavity relative to the side wall body.

[0010] The threshold assembly comprises a threshold beam, a threshold inner plate and a threshold outer plate, wherein the threshold beam is fixed between the threshold inner plate and the threshold outer plate, and an inner side wall of the threshold beam is connected to the threshold inner plate.

[0011] Specifically, it also includes a first reinforcement structure, which is located at the end of the sill beam close to the front of the vehicle, the middle part of the first reinforcement structure is connected to the outer side wall of the sill beam, the first reinforcement structure extends upward and is fixed between the sill inner panel and the sill outer panel, the first reinforcement structure extends downward and is respectively connected to the sill inner panel and the sill outer panel, and the first reinforcement structure extends toward the front of the vehicle to form a support structure for shielding the end of the sill beam.

[0012] Specifically, it also includes a second reinforcement structure, which is located in the middle of the threshold beam, the middle of the second reinforcement structure is connected to the outer side wall of the threshold beam, the second reinforcement structure extends upward and is fixed between the threshold inner panel and the threshold outer panel, and the second reinforcement structure extends downward and is respectively connected to the threshold inner panel and the threshold outer panel.

[0013] Specifically, it also includes a third reinforcement structure, which is located at the end of the rocker beam close to the rear of the vehicle, one end of the third reinforcement structure is connected to the upper wall of the rocker beam, and the other end of the third reinforcement structure is respectively connected to the rocker inner panel and the rocker outer panel.

[0014] A vehicle comprises the sill beam or the sill assembly.

[0015] Compared with the prior art, the threshold beam, threshold assembly and vehicle of the present invention have the following beneficial effects:

[0016] The upper wall and / or lower wall of the first cavity in the sill beam extends into a second cavity along the Z-axis direction, and the upper wall and / or lower wall of the first cavity form an acute angle with respect to the inner wall of the first cavity. When a collision force occurs, the force guides the deformation along the inclination direction of the upper wall and / or lower wall of the first cavity. The force transmission path of the overall sill beam is coherent and efficient, which can effectively disperse the collision force and reduce the impact force on the internal components of the vehicle, such as reducing the impact force on the passenger compartment and the battery compartment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural schematic diagram of a threshold beam is provided for an embodiment of the present application;

[0018] Figure 2 A schematic cross-sectional view of a threshold beam is provided for an embodiment of the present application;

[0019] Figure 3 A schematic diagram of a door sill assembly and a side panel assembly is provided for an embodiment of the present application;

[0020] Figure 4 A schematic diagram of a door sill assembly is provided for an embodiment of the present application;

[0021] Figure 5 A schematic diagram of a first reinforcement structure is provided for an embodiment of the present application;

[0022] Figure 6 A schematic diagram of a second reinforcement structure is provided for an embodiment of the present application;

[0023] Figure 7 A schematic diagram of a third reinforcement structure is provided for an embodiment of the present application;

[0024] Figure 8 A side view schematic diagram of a door sill assembly is provided for an embodiment of the present application;

[0025] Fig. 9 An enlarged schematic diagram of the bottom of the A-pillar is provided for the embodiment of the present application;

[0026] Fig.10 for Figure 8 AA cross-sectional diagram of ;

[0027] Fig.11 for Figure 8 BB cross-sectional diagram;

[0028] Fig.12 for Figure 8 Schematic diagram of CC cross section;

[0029] Fig.13 for Figure 8 Schematic diagram of DD cross section.

[0030] Reference numerals:

[0031] A first cavity 11, a second cavity 12, and a welding via 13;

[0032] The connecting wall 21, the first lower wall 22, the inclined portion 221, the transition portion 222, the inner wall 23, the reinforcing portion 231, the side wall body 232, the first upper wall 24, the second upper wall 25, the outer wall 26, the second lower wall 27, the first bending portion 28, and the second bending portion 29;

[0033] A rocker inner panel 31, a rocker outer panel 32, and a reinforcement panel 33;

[0034] The first reinforcing structure 4, the supporting structure 41, the sealing plate 411, the connecting edge 412, the first connecting portion 42, the second connecting portion 43, the third connecting portion 44, and the connecting ear 441;

[0035] The second reinforcing structure 5, the first supporting portion 51, the second supporting portion 52, the third supporting portion 53, the third bending portion 531, and the reinforcing rib 532;

[0036] The third reinforcing structure 6 , the first fixing portion 61 , the second fixing portion 62 , and the flange 63 . DETAILED DESCRIPTION

[0037] In order to make the technical solutions and advantages in the embodiments of the present application more clearly understood, the exemplary embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0038] Embodiment 1

[0039] The present embodiment provides a threshold beam, which is applied to a vehicle and adopts a progressive deformation energy absorption structure that is weak outside and strong inside, so as to accelerate the absorption of impact force from the outside of the vehicle, which is described in detail below.

[0040] like Figure 1-Figure 3 As shown, the door sill beam includes a first cavity 11 and a second cavity 12 which are adjacently arranged. The first cavity 11 is arranged close to the interior of the vehicle, and the second cavity 12 is arranged close to the exterior of the vehicle. The upper wall and / or the lower wall of the first cavity 11 extends out of the second cavity 12 along the Z-axis direction, and the upper wall and / or the lower wall of the first cavity 11 forms an acute angle with respect to the inner wall 23 of the first cavity 11.

[0041] In this embodiment, the second cavity 12 is extended from the lower wall of the first cavity 11 along the Z-axis direction, and the lower wall of the first cavity 11 forms an acute angle with respect to the inner wall 23 of the first cavity 11 .

[0042] In this embodiment, the straight-line driving direction of the vehicle is defined as the X-axis direction, the direction between the left and right side walls of the vehicle is defined as the Y-axis direction, the direction between the roof and the floor of the vehicle is defined as the Z-axis direction, the forward driving direction of the vehicle is defined as the front of the vehicle, and the reverse driving direction of the vehicle is defined as the rear of the vehicle.

[0043] The first cavity 11 is formed by sequentially connecting and enclosing the first upper wall 24, the connecting wall 21, the first lower wall 22, and the inner wall 23; the second cavity 12 is formed by sequentially connecting and enclosing the second upper wall 25, the outer wall 26, the second lower wall 27, and the connecting wall 21. The connecting wall 21 can be a split piece or an integral piece. This embodiment is described by taking the connecting wall 21 as an integral piece as an example.

[0044] The sill beam is divided into a first cavity 11 and a second cavity 12 by a connecting wall 21. The second cavity 12 is formed into a roughly rectangular structure, and the first cavity 11 is formed into a roughly right-angled trapezoidal structure. The short side of a pair of sides of the first cavity 11 is equal to one side of the second cavity 12. It is understood that the second cavity 12 and the first cavity 11 are connected by the connecting wall 21, and the connecting wall 21 is the short side of a pair of sides of the first cavity 11, and is also one of the sides of the second cavity 12.

[0045] In this embodiment, the cross-sectional area of ​​the second cavity 12 of the sill beam is smaller than that of the first cavity 11, forming a progressive deformation energy absorption structure that is weak on the outside and strong on the inside. The sill beam has a better deformation energy absorption effect when subjected to a lateral collision. Compared with the existing sill beams with equal strength designs, it avoids the difficulty of deformation caused by the equal strength cavity structure that resists deformation, and the lateral collision force is easily transmitted directly to the sill inner panel 31 and the bottom parts of the vehicle without deformation energy absorption, resulting in large deformation of the sill inner panel 31 and other components and insufficient protection of the internal power battery of the vehicle.

[0046] The connecting wall 21, the first lower wall 22, the inner wall 23, the first upper wall 24, the second upper wall 25, the outer wall 26 and the second lower wall 27 are sequentially connected to form an integral structure. The connecting wall 21 is arranged along the Z-axis direction.

[0047] A first bending portion 28 is provided at the end of the connecting wall 21 away from the first lower wall 22, and the first bending portion 28 is connected to the second upper wall 25. The first bending portion 28 extends along the Y-axis direction to the second upper wall 25 to fix the upper end of the connecting wall 21; specifically, the first bending portion 28 is provided at the connection between the first upper wall 24 and the second upper wall 25, the first upper wall 24 is aligned with the second upper wall 25 and is integrally provided, and the first upper wall 24 and the second upper wall 25 are both arranged along the Y-axis direction.

[0048] The first bending portion 28 and the second upper wall 25 may be connected by welding, riveting or screwing. In this embodiment, the first bending portion 28 and the second upper wall 25 are fixed by welding.

[0049] A second bent portion 29 is provided at the end of the second lower wall 27 away from the outer wall 26 . The second bent portion 29 is connected to the connecting wall 21 and extends to the connecting wall 21 along the Z-axis direction to fix the lower end of the connecting wall 21 .

[0050] The second bent portion 29 and the connecting wall 21 may be connected by welding, riveting or screwing. In this embodiment, the second bent portion 29 and the connecting wall 21 are fixed by welding.

[0051] In the present embodiment, the threshold beam is manufactured by a high-strength steel rolling process, where the first bent portion 28 is first rolled, the first bent portion 28 is welded to the second upper wall 25, and then rolled again until the second bent portion 29 is rolled to the end, and the second bent portion 29 is welded to the connecting wall 21 to form a self-enclosed, one-piece double-cavity structure. The double-cavity structure has good cross-sectional stability and good load-bearing characteristics. The parts that enclose the threshold beam are highly integrated, and the threshold beam manufactured by the rolling process is more efficient, which has the advantage of reducing costs compared to threshold beams manufactured by existing aluminum alloy extrusion processes.

[0052] The second upper wall 25 and the second lower wall 27 are arranged in parallel and along the Y-axis direction; the connecting wall 21 and the outer wall 26 are arranged in parallel and along the Z-axis direction. The outer wall 26 is arranged close to the outside of the vehicle, and the inner wall 23 is arranged close to the inside of the vehicle.

[0053] The lower end of the inner wall 23 extends downward along the Z-axis direction relative to the lower end of the connecting wall 21. The first lower wall 22 includes a connected inclined portion 221 and a transition portion 222. The end of the inclined portion 221 is connected to the lower end of the inner wall 23, and the end of the transition portion 222 is connected to the lower end of the connecting wall 21. The inclined portion 221 extends upward from the inner wall 23 toward the connecting wall 21, and the acute angle formed between the inclined portion 221 and the inner wall 23 is in the range of 25°-70°; the transition portion 222 is aligned with the second lower wall 27 and is separately arranged. The transition portion 222 and the second lower wall 27 are arranged along the Y-axis direction. The inclined portion 221 forms an inclined guiding feature relative to the inner wall 23. The first cavity 11 has a larger energy absorption space by setting the inclined portion 221, and can better absorb energy and collapse. The inclined portion 221 is connected to the transition portion 222, and the transition portion 222 is connected to the connecting wall 21. The transition portion 222 is close to the position where the second bending portion 29 connects to the connecting wall 21, further enhancing the stability of the welding between the second bending portion 29 and the connecting wall 21. At the same time, the path for transmitting force to the connecting wall 21 and the transition portion 222 through the second lower wall 27 is continuous and efficient, thereby enhancing the energy absorption effect.

[0054] The inner side wall 23 includes a reinforcement portion 231 and a side wall body 232 connecting the two ends of the reinforcement portion 231, and the reinforcement portion 231 protrudes toward the first cavity 11 relative to the side wall body 232. The upper end of the side wall body 232 is connected to the end of the first upper wall 24, and the lower wall of the side wall body 232 is connected to the end of the inclined portion 221. The side wall body 232 and the connecting wall 21 can be parallel, and the reinforcement portion 231 is located at a substantially middle position of the inner side wall 23. The inner side wall 23 includes the reinforcement portion 231, which can further enhance the rigidity of the threshold beam along the Z-axis direction, thereby improving the safety and reliability of the threshold beam under the 25% offset collision condition.

[0055] The outer side wall 26 and the inclined portion 221 are respectively provided with welding through holes 13 to facilitate welding and fixing of the door sill beam; the outer side wall 26 and the inclined portion 221 are respectively provided with weight-reducing holes to facilitate lightweight management.

[0056] In the present embodiment, the upper wall and / or lower wall of the first cavity 11 in the sill beam extends into a second cavity 12 along the Z-axis direction, and the upper wall and / or lower wall of the first cavity 11 form an acute angle with respect to the inner wall 23 of the first cavity 11. When a collision force occurs, the force guides the deformation along the inclination direction of the upper wall and / or lower wall of the first cavity 11. The force transmission path of the entire sill beam is coherent and efficient, which can effectively disperse the collision force and reduce the impact force on the internal components of the vehicle, such as reducing the impact force on the passenger compartment and the battery compartment.

[0057] Embodiment 2

[0058] The present embodiment provides a threshold assembly, including the threshold beam, the threshold inner panel 31 and the threshold outer panel 32 in the above embodiment, the threshold beam is arranged below the side panel assembly of the vehicle along the X-axis direction, the first cavity 11 and the second cavity 12 are respectively penetrated along the X-axis direction, and cavity openings are respectively formed at both ends of the threshold beam in the X-axis direction.

[0059] like Figure 1-Figure 13 As shown, the sill inner panel 31 and the sill outer panel 32 are connected to form a sill inner cavity for accommodating the sill beam. The inner side wall 23 of the sill beam is connected to the sill inner panel 31. The side panel assembly is connected to the sill inner panel 31 and the sill outer panel 32 respectively. The side panel assembly includes an A-pillar, a B-pillar and a C-pillar. The A-pillar, the B-pillar and the C-pillar are all provided with a force-conducting cavity, which is connected to the sill inner cavity.

[0060] The sill assembly also includes a first reinforcement structure 4, which is located at the end of the sill beam near the front of the vehicle and in the sill cavity below the A-pillar of the vehicle. Preferably, the first reinforcement structure 4 is located at the intersection of the force-conducting cavity of the A-pillar and the sill cavity. The middle portion of the first reinforcement structure 4 is connected to the outer side wall 26 of the sill beam, the upper portion of the first reinforcement structure 4 extends upward and is fixed between the sill inner panel 31 and the sill outer panel 32, and the lower portion of the first reinforcement structure 4 extends downward and is respectively connected to the sill inner panel 31 and the sill outer panel 32. The end of the first reinforcement structure 4 extends toward the front of the vehicle to form a support structure 41 that shields the end of the sill beam.

[0061] The first reinforcement structure 4 includes a first connection portion 42 , a second connection portion 43 and a third connection portion 44 ; the upper portion of the first connection portion 42 is connected to the second connection portion 43 extending upward, and the lower portion of the first connection portion 42 is connected to the third connection portion 44 extending downward.

[0062] The first connection portion 42 is connected to the outer side wall 26 of the second cavity 12. A reinforcing plate 33 is disposed between the sill inner panel 31 and the sill outer panel 32. The reinforcing plate 33 is located above the sill beam. One end of the reinforcing plate 33 is connected to the sill inner panel 31, and the other end of the reinforcing plate 33 is connected to the second connection portion 43. Specifically, the end of the reinforcing plate 33 extends between the inner side wall 23 of the sill beam and the sill inner panel 31, and the ends of the reinforcing plate 33 are respectively connected to the inner side wall 23 of the sill beam and the sill inner panel 31. The third connection portion 44 is respectively connected to the sill inner panel 31 and the sill outer panel 32.

[0063] The second connection portion 43 extends obliquely toward the threshold inner plate 31, and the third connection portion 44 extends obliquely toward the threshold inner plate 31. The third connection portion 44 includes a connection body and a plurality of connection ears 441 arranged along the lower edge of the connection body. The connection ears 441 are respectively connected to the threshold inner plate 31 and the threshold outer plate 32. In this embodiment, the reinforcing plate 33, the first reinforcing structure 4, and the threshold inner plate 31 are enclosed to form a subspace located in the threshold inner cavity, so that the threshold beam can be stably fixed in the subspace, and the connection strength between the threshold beam and the threshold inner plate 31 and the threshold outer plate 32 is further strengthened. The first connection portion 42, the second connection portion 43, and the third connection portion 44 are connected to form a roughly "X"-shaped structure.

[0064] The support structure 41 includes a sealing plate 411 connected to the first connection portion 42. The sealing plate 411 extends from the first connection portion 42 along the X-axis direction and blocks the opening of the door sill beam. The sealing plate 411 is connected to the first connection portion 42 to improve the connection strength of the first reinforcement structure 4. The sealing plate 411 can also block the opening of the door sill beam to improve the structural strength of the installation space where the end of the door sill beam close to the front of the vehicle is located. In order to further improve the connection strength of the sealing plate 411, the upper part of the sealing plate 411 is connected to the second connection portion 43, and the lower part of the sealing plate 411 is connected to the third connection portion 44.

[0065] The support structure 41 further includes a connecting edge 412 connected to the sealing plate 411 . The connecting edge 412 extends from the sealing plate 411 toward the front of the vehicle along the X-axis direction. The connecting edge 412 is respectively connected to the rocker inner panel 31 and the rocker outer panel 32 .

[0066] The first connection portion 42 and the third connection portion 44 are respectively provided with holes corresponding to the welding through holes 13 of the door sill beam, so as to be used for welding and fixing the first reinforcement structure 4 to the door sill inner panel 31 and the door sill outer panel 32 .

[0067] The first reinforcing structure 4 , the sill inner panel 31 , the sill outer panel 32 and the sill beam may be connected by welding, gluing, riveting or screwing.

[0068] The sill assembly also includes a second reinforcement structure 5, which is located in the middle of the sill beam and is located in the inner cavity of the sill between the A-pillar and the B-pillar of the vehicle and / or between the B-pillar and the C-pillar of the vehicle. Preferably, the second reinforcement structure 5 is located at the intersection of the force-conducting cavity of the B-pillar and the inner cavity of the sill. The middle of the second reinforcement structure 5 is connected to the outer side wall 26 of the sill beam, the upper part of the second reinforcement structure 5 extends upward and is fixed between the inner sill panel 31 and the outer sill panel 32, and the lower part of the second reinforcement structure 5 extends downward and is respectively connected to the inner sill panel 31 and the outer sill panel 32.

[0069] The second reinforcement structure 5 includes a first support portion 51 , a second support portion 52 and a third support portion 53 . The upper portion of the first support portion 51 is connected to the second support portion 52 extending upward, and the lower portion of the first support portion 51 is connected to the third support portion 53 extending downward.

[0070] The first support portion 51 is connected to the outer side wall 26 of the second cavity 12. The second support portion 52 is connected to the rocker inner panel 31, and the second support portion 52 extends obliquely toward the rocker inner panel 31. The third support portion 53 extends obliquely toward the rocker inner panel 31, and the third support portion 53 is connected to the rocker inner panel 31 and the rocker outer panel 32, respectively.

[0071] The first supporting portion 51 , the second supporting portion 52 and the third supporting portion 53 are connected to form a substantially “X”-shaped structure.

[0072] The second reinforcement structure 5 may also be an L-shaped structure.

[0073] The number of the second reinforcement structures 5 can be multiple, and they can be installed on the door sill beam in an integrated or split manner. In this embodiment, the number of the second reinforcement structures 5 is two, one second reinforcement structure 5 is located between the A-pillar and the B-pillar of the vehicle, and is close to the B-pillar, and the other second reinforcement structure 5 is located between the B-pillar and the C-pillar of the vehicle, and is close to the B-pillar.

[0074] The third supporting portion 53 has a third bending portion 531 . A reinforcing rib 532 is provided in the bending angle of the third bending portion 531 to improve the connection strength of the bending portion, especially the rigidity along the Z-axis direction.

[0075] The second reinforcement structure 5 , the rocker inner panel 31 , the rocker outer panel 32 and the rocker beam may be connected by welding, gluing, riveting or screwing.

[0076] The rocker assembly further includes a third reinforcement structure 6, which is located at the end of the rocker beam close to the rear of the vehicle and in the rocker inner cavity between the B-pillar and the C-pillar of the vehicle. One end of the third reinforcement structure 6 is connected to the second upper wall 25 of the rocker beam, and the other end of the third reinforcement structure 6 is respectively connected to the rocker inner panel 31 and the rocker outer panel 32.

[0077] The third reinforcement structure 6 includes a first fixing portion 61 and a second fixing portion 62, which are connected to form a substantially L-shaped structure, and the first fixing portion 61 and the second fixing portion 62 may be vertically connected. The third reinforcement structure 6 may also be an X-shaped structure.

[0078] The first fixing portion 61 is provided with flanges 63 connected to the second fixing portion 62 on both sides thereof, for strengthening the edge strength of the connection between the first fixing portion 61 and the second fixing portion 62. The first fixing portion 61 is connected to the second upper wall 25 of the second cavity 12, and the second fixing portion 62 is connected to the rocker inner panel 31 and the rocker outer panel 32, respectively.

[0079] The third reinforcing structure 6 , the sill inner panel 31 , the sill outer panel 32 and the sill beam may be connected by welding, gluing, riveting or screwing.

[0080] Both the threshold beam and the reinforcement structure can be provided with weight-reducing holes, and a plurality of weight-reducing holes can be provided. On the basis of not affecting the structural strength of the threshold beam and the reinforcement structure, the positions of the weight-reducing holes are reasonably arranged to achieve lightweight management. This embodiment does not limit the specific opening positions of the weight-reducing holes.

[0081] Under the 25% offset collision condition, the force transmission path of the sill beam and each reinforcement structure is as follows: the inner side wall 23 of the sill beam is connected to the inner sill plate 31, and the force transmission path passes through the A-pillar and / or B-pillar, the inner sill plate 31, and the inner side wall 23 of the sill beam in sequence. The force transmission path is more simple and efficient, and the energy absorption function of the sill beam is better exerted. By setting a reinforcement structure between the inner sill plate 31 and the outer sill plate 32, such as the first reinforcement structure 4, the second reinforcement structure 5, and the third reinforcement structure 6. The first reinforcement structure 4 is located at the intersection of the force guide cavity of the A-pillar and the inner cavity of the sill. The force transmission path passes through the A-pillar, the inner sill plate 31, the first reinforcement structure 4, and the outer side wall 26 of the sill beam in sequence. The first reinforcement structure 4 has a good effect of resisting deformation. The second reinforcement structure 5 is located at the intersection of the force-conducting cavity of the B-pillar and the inner cavity of the sill, and the force transmission path passes through the A-pillar and / or the B-pillar, the inner panel 31 of the sill, the second reinforcement structure 5, and the outer wall 26 of the sill beam in sequence; the third reinforcement structure 6 is located in the inner cavity of the sill between the B-pillar and the C-pillar, and the force transmission path passes through the A-pillar and / or the B-pillar, the inner panel 31 of the sill, the third reinforcement structure 6, and the second upper wall 25 of the sill beam in sequence.

[0082] This embodiment significantly improves the stiffness of the sill assembly, especially the Z-direction stiffness, by adding a force transmission path for the sill beam and rationally arranging the position of the reinforcement structure at the structural stiffness weak area of ​​the sill beam, effectively disperses the collision force, and greatly improves the ability to resist deformation under complex stress states such as 25% offset collision conditions, effectively protecting the safety of passengers and power batteries in the vehicle; multiple reinforcement structures are coordinated with the sill beam, and the connection relationship between the sill beam and the sill inner panel 31 and the sill outer panel 32 through multiple reinforcement structures is more stable, avoiding the problem of collision failure of the sill beam.

[0083] Embodiment 3

[0084] This embodiment provides a vehicle, including the sill beam in the above embodiment and / or the sill assembly in the above embodiment.

[0085] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0086] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection, or integrated; it can be a mechanical connection, or an electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0087] Although the preferred embodiments of the present application have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A threshold beam, characterized in that: The invention comprises a first cavity (11) and a second cavity (12) which are arranged adjacent to each other, wherein the first cavity (11) is arranged close to the interior of a vehicle, and the second cavity (12) is arranged close to the exterior of the vehicle, and the upper wall and / or the lower wall of the first cavity (11) extend out of the second cavity (12) along the Z-axis direction, and the upper wall and / or the lower wall of the first cavity (11) form an acute angle with respect to the inner wall (23) of the first cavity (11).

2. The door sill beam according to claim 1, characterized in that: The sill beam is divided into the first cavity (11) and the second cavity (12) by a connecting wall (21); the cross-sectional area of ​​the second cavity (12) is smaller than the cross-sectional area of ​​the first cavity (11).

3. The door sill beam according to claim 2, characterized in that: The connecting wall (21) is arranged along the Z-axis direction, the upper end of the connecting wall (21) is provided with a first bending portion (28), the first bending portion (28) extends to the upper wall of the second cavity (12), the lower wall of the second cavity (12) is provided with a second bending portion (29), the second bending portion (29) extends to the lower end of the connecting wall (21).

4. The door sill beam according to claim 2, characterized in that: The lower end of the inner side wall (23) of the first cavity (11) extends downwardly along the Z-axis direction relative to the lower end of the connecting wall (21); the lower wall of the first cavity (11) comprises a connected inclined portion (221) and a transition portion (222); the end of the inclined portion (221) is connected to the lower end of the inner side wall (23); the end of the transition portion (222) is connected to the lower end of the connecting wall (21); and the transition portion (222) is aligned with the lower wall of the second cavity (12) along the Y-axis direction.

5. The door sill beam according to claim 2, characterized in that: The inner side wall (23) of the first cavity (11) comprises a reinforcing portion (231) and a side wall body (232) respectively connecting two ends of the reinforcing portion (231); the reinforcing portion (231) protrudes toward the first cavity (11) relative to the side wall body (232).

6. The threshold assembly is characterized by: The invention comprises a threshold beam, a threshold inner plate (31) and a threshold outer plate (32) as claimed in any one of claims 1 to 5, wherein the threshold beam is fixed between the threshold inner plate (31) and the threshold outer plate (32), and the inner side wall (23) of the threshold beam is connected to the threshold inner plate (31).

7. The door sill assembly according to claim 6, characterized in that: It also includes a first reinforcement structure (4), which is located on the end of the rocker beam close to the front of the vehicle. The middle portion of the first reinforcing structure (4) is connected to the outer side wall (26) of the sill beam, the first reinforcing structure (4) extends upward and is fixed between the sill inner plate (31) and the sill outer plate (32), the first reinforcing structure (4) extends downward and is respectively connected to the sill inner plate (31) and the sill outer plate (32), and the first reinforcing structure (4) extends toward the front of the vehicle to form a supporting structure (41) that shields the end of the sill beam.

8. The door sill assembly according to claim 6, characterized in that: It also includes a second reinforcement structure (5), wherein the second reinforcement structure (5) is located in the middle of the door sill beam. The middle portion of the second reinforcement structure (5) is connected to the outer side wall (26) of the threshold beam, the second reinforcement structure (5) extends upward and is fixed between the threshold inner panel (31) and the threshold outer panel (32), and the second reinforcement structure (5) extends downward and is respectively connected to the threshold inner panel (31) and the threshold outer panel (32).

9. The door sill assembly according to claim 6, characterized in that: It also includes a third reinforcement structure (6), which is located on the end of the rocker beam close to the rear of the vehicle. One end of the third reinforcement structure (6) is connected to the upper wall of the door sill beam, and the other end of the third reinforcement structure (6) is respectively connected to the door sill inner plate (31) and the door sill outer plate (32).

10. A vehicle, characterized in that: It comprises the threshold beam as claimed in any one of claims 1 to 5 or the threshold assembly as claimed in any one of claims 6 to 9.

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