Vehicle body side impact force transmission structure and vehicle

Abstract

The utility model provides a vehicle body side impact force transmission structure and a vehicle. The vehicle body side impact force transmission structure comprises threshold beams arranged on the left side and the right side respectively and a seat cross beam connected between the threshold beams on the two sides. The seat cross beam comprises a front seat cross beam and a rear seat cross beam which are arranged at an interval in the front-back direction of the whole vehicle, and the front seat cross beam and the rear seat cross beam are integrally and upwards arched; when the doorsill beams on all the sides bear collision force from the side face of the whole vehicle, the collision force from the doorsill beams can be decomposed and transmitted on the front seat cross beam and the rear seat cross beam in the left-right direction of the whole vehicle and the up-down direction of the whole vehicle. When the side collision of the vehicle occurs, part of collision force can be decomposed upwards, the front floor structure can be prevented from extruding and colliding the battery pack downwards, and the safety of the side collision of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, and in particular to a vehicle body side impact force transmission structure. The utility model also relates to a vehicle provided with the vehicle body side impact force transmission structure. Background Art

[0002] Currently, in traditional vehicle body structures, when a vehicle collides sideways, the force transmission path of the seat crossbeam on the front floor is horizontal and lateral. Under the lateral squeezing effect of the side collision force, the seat crossbeam will be deformed, and after the squeezing and deformation, the seat crossbeam will invade the front floor in the upper and lower directions, which can easily cause the front floor structure to deform below the floor.

[0003] For existing new energy vehicle models, since the battery pack is generally installed at the bottom of the front floor, the downward deformed front floor structure can easily collide with the battery pack, causing stress damage to the battery cells and damage to the battery pack. In severe cases, it may even cause the battery pack to catch fire, endangering the lives of the driver and passengers, which is not conducive to improving the side collision safety of the entire vehicle. Utility Model Content

[0004] In view of this, the utility model aims to provide a vehicle body side impact force transmission structure, so as to improve the safety of the whole vehicle side impact.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A vehicle body side impact force transmission structure, comprising sill beams arranged on left and right sides, and a seat crossbeam connected between the sill beams on both sides;

[0007] The seat cross beam comprises a front seat cross beam and a rear seat cross beam which are arranged at intervals along the front-rear direction of the vehicle, and the front seat cross beam and the rear seat cross beam are both arranged to be arched upward as a whole;

[0008] When the sill beams on each side are subjected to collision force from the side of the vehicle, the collision force from the sill beams can be decomposed and transmitted on the front seat cross beam and the rear seat cross beam in both the left and right directions of the vehicle and the up and down directions of the vehicle.

[0009] Furthermore, each of the seat cross beams is an arc-shaped structure that gradually arches upward from the left and right ends to the middle in the left and right directions of the vehicle.

[0010] Further, each of the seat cross beams is roll-formed, and the cross section of the seat cross beam is a closed cross section with four sides closed or an open cross section with at least one side open; or,

[0011] Each of the seat cross beams is formed by stamping; or,

[0012] Each of the seat cross beams is made of extruded profiles.

[0013] Furthermore, each of the seat cross beams is an integral beam structure formed in one piece, or each of the seat cross beams is a split beam structure composed of a plurality of split structures connected together.

[0014] Furthermore, the front seat cross beam and the threshold beams on both sides are transitionally connected via a front cross beam connecting bracket, and a seat front mounting bracket is provided on the front seat cross beam.

[0015] Furthermore, the rear seat cross beam is transitionally connected to the door sill beams on both sides through a rear cross beam connecting bracket, and from the vertical direction of the vehicle, the rear seat cross beam is arranged close to the front side of the left and right B-pillars;

[0016] End reinforcement brackets are respectively arranged between the rear seat cross beam and the door sill beams on both sides, and the end reinforcement brackets on both sides are located at the rear side of the rear seat cross beam.

[0017] Furthermore, a first seat rear mounting bracket is provided on the end reinforcement bracket on each side, and a second seat rear mounting bracket is provided on the rear side of the rear seat cross beam, and the second seat rear mounting bracket is located between the end reinforcement brackets on both sides.

[0018] Further, the end reinforcement brackets on each side are surrounded by the rear seat cross beam and the door sill beam on the same side to form a cavity; and / or,

[0019] At least one of the first rear seat mounting bracket and the second rear seat mounting bracket is in a box-shaped structure.

[0020] Further, viewed from the left and right direction of the vehicle, the end section of the front seat cross beam has a first portion corresponding to the side of the door sill beam and a second portion corresponding to the top of the door sill beam, and the cross-sectional dimension of the first portion is greater than the cross-sectional dimension of the second portion;

[0021] and / or,

[0022] The entire end portion of the rear seat cross beam is disposed corresponding to the side portion of the door sill beam.

[0023] Compared with the prior art, the utility model has the following advantages:

[0024] The vehicle body side collision force transmission structure described in the utility model makes the seat crossbeam arch upward as a whole, and when the vehicle side collides, the collision force from the door sill beam can be decomposed and transmitted on the seat crossbeam along the left and right and up and down directions of the whole vehicle. In this way, when the vehicle side collides, when the collision force is transmitted along the seat crossbeam, in addition to the horizontal force, there will also be a vertical upward component force, and the vertical component force will make the seat crossbeam squeeze and deform upward, that is, guide the seat crossbeam to deform upward, to avoid the seat crossbeam from squeezing the front floor structure and invading downward after the deformation, squeezing the battery pack space and causing battery pack damage, which helps to reduce the risk of battery pack fire and is beneficial to improving the safety of vehicle side collision.

[0025] In addition, the seat crossbeam is an arc-shaped structure that gradually arches upward from the left and right ends to the middle. This can decompose the collision force upward when the vehicle collides with the side, and also make the collision force better transmitted laterally to ensure the transmission and dispersion effect of the collision force. At the same time, the seat crossbeam is in an arc shape, and the high strength of the arc structure can be used to ensure the structural strength of the seat crossbeam itself. The seat crossbeam is roll-formed, and the cross section of the seat crossbeam is a closed cross section, or an open cross section with a side opening, which can facilitate the preparation of the seat crossbeam and ensure its structural strength. The seat crossbeam is stamped, or the seat crossbeam is made of extruded profiles, which can also facilitate the preparation of the seat crossbeam and help ensure the structural strength of the seat crossbeam.

[0026] Secondly, the seat crossbeam is an integral beam formed in one piece, which can take advantage of the one-piece forming process, facilitate the preparation of the seat crossbeam, reduce its preparation cost, and also help ensure the overall structural strength of the seat crossbeam. The seat crossbeam is a split beam composed of multiple split structures connected together, which can facilitate the control of the structural shape of the seat crossbeam, facilitate matching with surrounding parts in the vehicle body, and facilitate the arrangement of the seat crossbeam in the vehicle body.

[0027] The front seat crossbeam and the threshold beam are connected by a front crossbeam connecting bracket, and the rear seat crossbeam and the threshold beam are connected by a rear crossbeam connecting bracket, which can reduce the connection difficulty and facilitate the connection operation between them. The seat crossbeam is set close to the front side of the B-pillars on both sides, which can also avoid the impact on the rear passenger foot space caused by the arched setting of the seat crossbeam, and can ensure the comfort of the rear row. By setting the end reinforcement bracket, on the basis of the forward setting of the rear seat crossbeam, the collision force at the B-pillar position can be fully transmitted to the rear seat crossbeam.

[0028] Furthermore, a first seat rear mounting bracket is arranged on the end reinforcement bracket, and a second seat rear mounting bracket is arranged on the rear side of the rear seat cross beam. The seat installation function at the rear seat cross beam position can be realized on the basis of being arranged on the arch of the rear seat cross beam and being arranged close to the front side of the B-pillar. The second seat rear mounting bracket is located on the rear side of the rear seat cross beam, which can also avoid being arranged on the rear seat cross beam, causing the seat mounting point to be too high and affecting the installation of the seat.

[0029] A cavity is formed between the end reinforcement bracket and the rear seat crossbeam and the door sill beam, and the structural strength of the end reinforcement bracket itself can be increased by utilizing the high structural strength of the cavity. The first seat rear mounting bracket and the second seat rear mounting bracket are in a box-shaped structure, which can make the seat rear mounting bracket have better structural strength, help to ensure the rigidity of the seat mounting point, and ensure the stability of the seat installation.

[0030] In addition, the cross-sectional size of the first part of the end section of the front seat cross beam corresponding to the side of the threshold beam is larger than the cross-sectional size of the second part corresponding to the top of the threshold beam, which can avoid the side collision of the vehicle. During the inward movement of the threshold beam, the threshold beam and the end of the front seat cross beam are relatively located and disengaged, causing the front seat cross beam to be unable to participate in the collision force transmission, affecting the collision safety. The entire end of the rear seat cross beam is arranged corresponding to the side of the threshold beam, which can better transmit the collision force at the threshold beam to the rear seat cross beam when the vehicle is side-collided, and can make full use of the rear seat cross beam to transmit and dissipate the collision force, which is conducive to improving the safety of side collision.

[0031] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the vehicle body side impact force transmission structure as described above.

[0032] The vehicle described in the utility model has the same beneficial effects as the above-mentioned vehicle body side impact force transmission structure, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0034] Figure 1 It is a schematic diagram of the arrangement of the vehicle body side impact force transmission structure on the front floor according to an embodiment of the utility model;

[0035] Figure 2 for Figure 1 Schematic diagram of the structure of the middle part;

[0036] Figure 3 A schematic diagram of the decomposition of the side impact collision force using the front seat crossbeam as an example;

[0037] Figure 4 It is a schematic diagram of the connection between the front and rear seat cross beams and the door sill beam according to an embodiment of the utility model;

[0038] Figure 5 It is a schematic diagram of another structural form of the seat crossbeam according to the embodiment of the utility model;

[0039] Figure 6 It is a schematic diagram of the corresponding arrangement between the end section of the front seat cross beam and the door sill beam according to the embodiment of the utility model;

[0040] Figure 7 It is a schematic diagram of the corresponding arrangement between the end section of the rear seat cross beam and the door sill beam according to the embodiment of the utility model;

[0041] Description of reference numerals:

[0042] 1. Door sill beam; 2. Front floor panel; 3. Seat crossbeam; 4. B-pillar; 5. Front crossbeam connecting bracket; 6. Rear crossbeam connecting bracket; 7. End reinforcement bracket; 8. Seat front mounting bracket; 9. Second seat rear mounting bracket; 10. First seat rear mounting bracket;

[0043] 201, middle channel; 301, front seat crossbeam; 302, rear seat crossbeam; 3a, straight section; 3b, inclined section;

[0044] m, the second part corresponding to the top of the seat cross beam and the threshold beam; n, the first part corresponding to the side of the seat cross beam and the threshold beam. DETAILED DESCRIPTION

[0045] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0046] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship 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, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0047] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0048] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0049] Embodiment 1

[0050] The present embodiment relates to a vehicle body side impact force transmission structure, which is suitable for new energy vehicle models that are equipped with a battery pack, and the battery pack is located under the front floor. The vehicle body side impact force transmission structure of the present embodiment can reduce the risk of battery pack fire when the vehicle collides sideways through its structural design, thereby helping to improve the safety of the entire vehicle in side impacts.

[0051] In terms of overall structure, combined Figures 1 to 3 As shown, the vehicle body side impact force transmission structure of this embodiment includes door sill beams 1 arranged on the left and right sides, and a seat cross beam 3 connected between the door sill beams 1 on both sides.

[0052] The seat cross beam 3 includes a front seat cross beam 301 and a rear seat cross beam 302 arranged at intervals along the front-rear direction of the vehicle, and the front seat cross beam 301 and the rear seat cross beam 302 are both arched upward as a whole. At the same time, when the sill beams 1 on each side are subjected to a collision force from the side of the vehicle, the collision force from the sill beam 1 can be decomposed and transmitted in two directions on the front seat cross beam 301 and the rear seat cross beam 302 along the left-right direction of the vehicle and the up-down direction of the vehicle.

[0053] At this time, as set above, by making the seat beam 3 including the front seat beam 301 and the rear seat beam 302 arch upward as a whole, and making it possible for the collision force from the door sill beam 1 to be decomposed and transmitted along the left and right and up and down directions of the whole vehicle on the seat beam 3 when the vehicle collides sideways, this embodiment can be used when the vehicle collides sideways. When the collision force is transmitted along the seat beam 3, in addition to the horizontal force, there will also be a vertical component force, and the vertical component force will make the seat beam 3 squeeze and deform upward, guiding the seat beam 3 to deform upward, which can avoid the seat beam 3 from squeezing the front floor structure downward after deformation, occupying the battery pack space and causing battery pack damage, thereby reducing the risk of fire when the battery pack collides, thereby achieving the effect of improving the side collision safety of the whole vehicle.

[0054] Based on the above overall introduction, specifically, Figures 1 to 3As shown, the seat cross beam 3 of this embodiment is specifically located on the front floor in the middle of the vehicle body, and, as a preferred implementation form, when specifically implemented, the seat cross beams 3 that are arched upward as a whole in this embodiment can still be as shown in FIG. Figures 1 to 3 As shown in the figure, in the left and right directions of the vehicle, the arc-shaped structure gradually arches upward from the left and right ends to the middle.

[0055] At this time, by making each seat cross beam 3 an arc-shaped structure that gradually arches upward from the left and right ends to the middle, it can be understood that it can not only decompose the collision force upward when the vehicle collides sideways, but also enable the collision force to be better transmitted laterally along each seat cross beam 3 to ensure the transmission and dispersion effect of the collision force. At the same time, since the seat cross beam 3 is arc-shaped, it can obviously also utilize the high strength of the arc-shaped structure to ensure the structural strength of each seat cross beam 3 itself, which helps to increase the overall stiffness of the front floor.

[0056] In specific implementation, for the seat cross beam 3 with an arc structure, in order to obtain better collision response capability, the angle between the tangent of each end of the seat cross beam 3 and the left and right direction of the vehicle can generally be set between 6°-15°, and it can be, for example, 6°, 8°, 10°, 12° or 15°, etc. At the same time, for the curvature of the seat cross beam 3, it can generally be set so that the radius of the seat cross beam 3 is between 1.5 vehicle widths and 3.5 vehicle widths, and can be, for example, 1.5 times, 2 times, 2.5 times, 3 times or 3.5 times the vehicle width.

[0057] The vehicle width is the distance between the planes perpendicular to the longitudinal symmetry plane of the vehicle and respectively against the outermost rigid fixed protruding parts on both sides of the vehicle (except for the rearview mirror, side marker lights, position lights, turn signal lights, etc.). In addition to the setting of the end angle of the seat cross beam 3 and its curvature, it is worth pointing out that the overall curvature of the front seat cross beam 301 can also be different from that of the rear seat cross beam 302, so as to adapt to the layout of different positions on the front floor.

[0058] In addition, it is worth noting that, in the specific implementation, in addition to making each seat cross beam 3 of the present embodiment an upwardly arched arc structure, of course, in some other implementation forms, the seat cross beam 3 can also be other structural forms that can decompose the collision force from the door sill beam 1 upward, for example, see Figure 5 As shown in , the seat cross beam 3 as a whole can include a straight section 3a in the middle and inclined sections 3b on the left and right sides of the straight section 3a. The straight section 3a in the middle is arranged horizontally in the left and right direction of the vehicle, and the ends of the inclined sections 3b on each side are connected to the door sill beam 1 on the same side. Obviously, at this time, the seat cross beam as a whole is also arched upward.

[0059] In this embodiment, during specific preparation, each seat crossbeam 3 can be roll-formed, for example. When the roll-forming method is adopted, the cross-section of each seat crossbeam 3 can be a closed cross-section that is closed all around, or it can also be an open cross-section with at least one side open. At this time, making each seat crossbeam 3 roll-formed and making the cross-section of each seat crossbeam 3 a closed cross-section or an open cross-section with a side opening can facilitate the preparation of each seat crossbeam 3 and can also ensure its structural strength.

[0060] Among them, for the above-mentioned closed cross-section formed by roll-forming, its shape can include but is not limited to the shape like "日" (Chinese character for "day") or "目" (Chinese character for "eye"). The shape of the above-mentioned open cross-section can include but is not limited to the shapes like "M" or "Ω".

[0061] In this embodiment, in addition to the roll-forming method, as other preferred implementation forms, for example, each seat crossbeam 3 can also be stamping-formed, or each seat crossbeam 3 can also adopt extruded profiles. At this time, making each seat crossbeam 3 stamping-formed or making each seat crossbeam 3 adopt extruded profiles can also facilitate the preparation of each seat crossbeam 3 and is conducive to ensuring the structural strength of each seat crossbeam 3.

[0062] When each seat crossbeam 3 is stamping-formed, as a feasible example, the cross-sectional shape of each seat crossbeam 3 can include but is not limited to the shapes like "M" or "Ω". When each seat crossbeam 3 adopts extruded profiles, similar to the above-mentioned roll-forming process, the cross-section of each seat crossbeam 3 can also be a closed cross-section or an open cross-section with a side opening. At the same time, in addition to the shapes like "日" or "目" for the closed cross-section, of course, it can also be the shape like "田" (Chinese character for "field"), and other shapes with multiple closed cavities. The shape of the open cross-section can also be the shapes like "M" or "Ω".

[0063] It should be noted that when each seat crossbeam 3 adopts Figure 5 the structural form shown in [reference], it generally can adopt extruded profiles, or it can also be stamping-formed to facilitate the preparation of each seat crossbeam 3. However, for each seat crossbeam 3 in this embodiment, in addition to adopting extruded profiles, or stamping-formed, and the roll-forming method mentioned above, of course, it is also feasible to adopt other forming methods such as sheet metal welding, as long as the overall structure of each prepared seat crossbeam 3 meets the requirement of arching upward as a whole and can decompose the vehicle side collision force upward.

[0064] In this embodiment, each seat cross beam 3 can be an integral beam structure formed in one piece, so that each seat cross beam 3 is an integral beam formed in one piece, and the advantages of the integral molding process can be utilized, which is beneficial to the preparation of each seat cross beam 3, reduces its preparation cost, and also helps to ensure the overall structural strength of each seat cross beam 3. In specific implementation, the seat cross beam 3 with an integral beam structure can usually be formed by roll forming or stamping, or adopt an extruded profile.

[0065] In addition to the integral beam structure that can be formed in one piece, of course, in other implementation forms, each seat cross beam 3 of this embodiment can also be a split beam structure composed of multiple split structures connected together. In this case, each seat cross beam 3 is a split beam composed of multiple split structures connected together. Compared with the integral beam structure, it is easy to control the structural shape of each seat cross beam 3, which is conducive to matching each seat cross beam 3 with surrounding components in the vehicle body, and can facilitate the arrangement of each seat cross beam 3 in the vehicle body.

[0066] In specific implementation, the multiple split structures constituting the seat cross beam 3 can be, for example, a beam body formed by rolling, stamping or sheet metal welding. Of course, the beam body can also be an extruded profile. The multiple beam bodies can be connected together by direct or indirect connection to form the seat cross beam 3 as a split beam structure. The direct connection means that different beam bodies are directly connected, and the indirect connection means that different beam bodies are connected through structures such as connecting plates and connecting brackets, and the specific connection method can be screw connection, riveting, etc.

[0067] Still Figure 1 As shown in , in this embodiment, the front seat cross beam 301 also spans over the middle channel 201 on the front floor panel 2, and the bottom of the front seat cross beam 301 can be connected to the middle channel 201, and a front seat mounting bracket 8 is also provided on the front seat cross beam 3.

[0068] At this time, the bottom of the front seat cross beam 301 and the middle channel 201 can generally be connected together by welding methods such as spot welding or laser welding, or the two can also be connected together by screwing. Moreover, specifically, the bottom of the front seat cross beam 301 and the middle channel 201 can be connected, and the top surface of the middle channel 201 can also match the bottom shape of the front seat cross beam 301, so that the two have a better connection effect.

[0069] In addition, by making the front seat cross beam 301 span above the middle channel 201 and connected to the middle channel 201, it can be understood that by supporting the front seat cross beam 301 through the middle channel 201, the vertical supporting capacity of the front seat cross beam 301 can be improved to ensure the reliability of the installation of the front part of the seat. At the same time, it can also transfer and disperse the collision force on the front seat cross beam 301 to the middle channel 201, which helps to increase the dispersion effect of the collision force of the opposite side collision.

[0070] Combination Figure 2 and Figure 4 As shown in , in this embodiment, the front seat mounting bracket 8 disposed on the front seat cross beam 301 can generally be a stamped sheet metal structure, and can be stamped into a box-shaped structure, and can be surrounded by the front seat cross beam 301 to form a cavity. In this way, by utilizing the box-shaped structure of the front seat mounting bracket 8 itself, and then cooperating with the front seat cross beam 301 to form a cavity, the front seat mounting bracket 8 can have a good structural strength, thereby improving the rigidity of the front seat mounting point and ensuring the reliability of the seat installation.

[0071] It is worth noting that, in addition to making the above-mentioned front seat mounting bracket 8 adopt a stamped box-shaped structure, of course, in the specific implementation, the front seat mounting bracket 8 can also adopt a bracket structure such as roll forming, or a bracket structure made of extruded profiles. Moreover, it should be pointed out that according to the installation requirements of the seat, the front seat mounting bracket 8 located on the front seat cross beam 301 is usually arranged in multiple intervals. These multiple front seat mounting brackets 8 can adopt the same structure and have the same height, or the multiple front seat mounting brackets 8 can be slightly different in structure and have different heights, which can be designed according to the specific installation requirements of the seat.

[0072] In this embodiment, continue as Figure 1 and Figure 2 As shown, different from the above-mentioned front seat cross beam 301, in the front-to-rear direction of the vehicle, the rear seat cross beam 302 is located behind the central channel 201, and the rear seat cross beam 302 can also be connected to the rear end of the central channel 201. At the same time, viewed from the up and down direction of the vehicle, the rear seat cross beam 302 of this embodiment is also arranged close to the front side of the left and right B-pillars 4.

[0073] At this time, the rear seat cross beam 302 is located behind the central channel 201 and connected to the rear end of the central channel 201. The central channel 201 can also be used to increase the structural strength and vertical supporting capacity of the rear seat cross beam 302, and the collision force on the rear seat cross beam 302 can be transmitted and dispersed to the central channel 201 to increase the dispersion effect of the side collision force.

[0074] By arranging the rear seat cross beam 302 close to the front sides of the B-pillars 4 on both sides, it can be understood that it can avoid the impact on the foot space of the rear passengers caused by the arched rear seat cross beam 302, which makes the front floor under the front seats higher and the gap between the front seats is reduced, so as to ensure the riding comfort of the rear passengers.

[0075] On the basis that the rear seat cross beam 302 is arranged near the front sides of the B pillars 4 on both sides, this embodiment continues to refer to Figure 1 , Figure 2 and Figure 4 As shown, since the rear seat cross beam 302 is arranged near the front side of the B-pillars 4 on both sides, that is, in the front-rear direction of the whole vehicle, the rear seat cross beam 302 is moved forward compared with the traditional arrangement position. At this time, in order to ensure that when the vehicle is hit sideways, the collision force at the B-pillar 4, which is the main load-bearing position of the side collision, can be fully transmitted to the inner rear seat cross beam 302, as a preferred implementation form, this embodiment sets an end reinforcement bracket 7 between the rear seat cross beam 302 and each side sill beam 1.

[0076] The end reinforcement brackets 7 on each side are located at the rear side of the rear seat cross beam 302 so as to be arranged opposite to the B-pillar 4 in the left-right direction of the vehicle, and the end reinforcement brackets 7 on each side can be, for example, conventional stamped sheet metal structures, and connected to the door sill beam 1 and the rear seat cross beam 302 by welding. At the same time, when the sheet metal structure is adopted, the end reinforcement brackets 7 on each side can also be overlapped on the door sill beam 1 and the rear seat cross beam 302 to form a cavity with the door sill beam 1, the rear seat cross beam 302 and the front floor panel 2. At this time, by forming a cavity structure, the structural strength of the end reinforcement brackets 7 can be ensured by utilizing the high strength of the cavity structure, and thus can have better collision force transmission capability, so that the collision force from the B-pillar 4 position is fully transmitted to the rear seat cross beam 302.

[0077] It should be noted that when the above-mentioned end reinforcement bracket 7 is provided, and in order to achieve reliable installation of the rear part of the seat, during specific implementation, this embodiment also provides a first seat rear mounting bracket 10 on each side end reinforcement bracket 7, so that the installation of the rear part of the seat can be achieved through the cooperation of the first seat rear mounting bracket 10 and the second seat rear mounting bracket 9 described below.

[0078] As a preferred implementation form, still combined with Figure 1 , Figure 2 and Figure 4As shown in , in this embodiment, the second seat rear mounting bracket 9 mentioned above is arranged at the rear side of the rear seat cross beam 302, and the second seat rear mounting bracket 9 is located between the end reinforcement brackets 7 on both sides, and its front part is connected to the rear seat cross beam 302, and its bottom is connected to the front floor panel 2. At the same time, the second seat rear mounting bracket 9 can generally be arranged in multiple intervals to cooperate with the first seat rear mounting brackets 10 on both sides to install the rear of the seat.

[0079] Therefore, by setting a second seat rear mounting bracket 9 on the rear side of the rear seat cross beam 302 and setting a first seat rear mounting bracket 10 on the end reinforcement bracket 7, the present embodiment can realize the seat installation function at the position of the rear seat cross beam 302 on the basis of the arch setting on the seat cross beam and the rear seat cross beam 302 being set close to the front side of the B-pillar 4. It can be understood that by making the above-mentioned seat rear mounting brackets located on the rear side of the rear seat cross beam 302, compared with setting the seat rear mounting brackets on the rear seat cross beam 302 like the seat front mounting bracket 8, it can also avoid causing the seat rear mounting point to be too high, thereby affecting the installation arrangement of the seat.

[0080] In this embodiment, in specific implementation, the second seat rear mounting bracket 9 and the first seat rear mounting bracket 10 are usually stamped sheet metal parts, and each of the seat rear mounting brackets can also be set to a box-shaped structure and welded to the surrounding parts.

[0081] It is understandable that by making the first rear seat mounting bracket 10 on each side adopt a box-type structure, the first rear seat mounting bracket 10 can have a better structural strength, which helps to ensure the rigidity of the seat mounting point and ensure the stability of the seat installation.

[0082] By making the second seat rear mounting bracket 9 also adopt a box-type structure, and the front part of the second seat rear mounting bracket 9 is connected to the rear seat cross beam 302, and the bottom is connected to the front floor panel 2, it is obvious that this embodiment can also form a cavity between the second seat rear mounting bracket 9, the seat rear cross beam 302 and the front floor panel 2. In this way, it can also make the seat rear mounting bracket 9 have a better overall structural strength, which helps to ensure the rigidity of the seat rear mounting point and also achieve the effect of ensuring the stability of the seat installation.

[0083] It is worth noting that in this embodiment, based on the second seat rear mounting bracket 9 being arranged at the rear side of the rear seat cross beam 302, in specific implementation, preferably, the top of the second seat rear mounting bracket 9, of course including the top of the first seat mounting bracket 10, should generally be arranged higher than the rear seat cross beam 302. In this way, the installation of the rear part of the seat can be easily realized without being affected by the upward arch of the rear seat cross beam 302.

[0084] In addition, in this embodiment, in order to facilitate the installation operation of the seat, during the specific implementation, the seat mounting structures such as the above-mentioned front seat mounting bracket 8, the first seat rear mounting bracket 10 and the second seat rear mounting bracket 9 can be provided with screw-connecting components such as projection welding nuts or projection welding bolts, so that the seat can be fixedly arranged in the vehicle body by screwing.

[0085] In this embodiment, it is worth noting that, in specific implementation, each seat cross beam 3 and the threshold beams 1 on both sides can be directly connected, for example, by welding. However, in addition to direct connection, preferably, in specific implementation, each seat cross beam 3 and the threshold beams 1 on both sides can be transitionally connected by connecting brackets. In this case, each seat cross beam 3 is connected to the threshold beam 1 through the connecting bracket, which can reduce the difficulty of connection between them and facilitate the connection operation between them compared with direct connection.

[0086] Among them, for the transition connection method through the connecting bracket, for example, the front seat cross beam 301 can be connected to the door sill beam 1 through the front cross beam connecting bracket 5, and the rear seat cross beam 302 can be connected to the door sill beam 1 through the rear cross beam connecting bracket 6.

[0087] The above-mentioned front crossbeam connecting bracket 5 and rear crossbeam connecting bracket 6 can also be stamped sheet metal parts, and in specific implementation, the front crossbeam connecting bracket 5 or the rear crossbeam connecting bracket 6 can be fixedly connected together by welding after overlapping the seat crossbeam 3 between the door sill beam 1.

[0088] In this embodiment, as a preferred implementation form, the connection between each seat cross beam 3 and the door sill beam 1 is still aimed at, such as Figure 7 As shown, for the front seat cross beam 301, for example, when viewed from the left and right directions of the entire vehicle, the end cross section of the front seat cross beam 301 has a first portion n corresponding to the side of the door sill beam 1, and a second portion m corresponding to the top of the door sill beam 1, and the cross-sectional size of the first portion n is also greater than the cross-sectional size of the second portion m.

[0089] In this way, by making the cross-sectional size of the first part n corresponding to the side of the sill beam 1 in the end section of the front seat cross beam 301 larger than the cross-sectional size of the second part m corresponding to the top of the sill beam 1, it can be understood that when the vehicle has a side collision, it can avoid the sill beam 1 and the end of the front seat cross beam 301 from being disengaged due to relative displacement during the inward movement of the sill beam 1, resulting in the front seat cross beam 301 being unable to participate in the collision force transmission, affecting the collision safety of the entire vehicle.

[0090] Among them, in the end section of the front seat cross beam 301, the relative ratio between the cross-sectional size of the first part n corresponding to the side of the door sill beam 1 and the cross-sectional size of the second part m corresponding to the top of the door sill beam 1 can be set according to the overall curvature of the front seat cross beam 301, the arrangement height of the front seat cross beam 301 on the front floor, and the size of the overall cross-sectional size of the end of the front seat cross beam 301. Generally speaking, it is sufficient to make the cross-sectional size of the first part n corresponding to the side of the door sill beam 1 larger than the cross-sectional size of the second part m corresponding to the top of the door sill beam 1, and to make the cross-sectional size of the first part n corresponding to the side of the door sill beam 1 as large as possible.

[0091] like Figure 7 As shown, for the rear seat cross beam 302, unlike the front seat cross beam 301, the present embodiment can make the entire end of the rear seat cross beam 302 correspond to the side of the door sill beam 1. At this time, the entire end of the rear seat cross beam 302 is arranged to correspond to the side of the door sill beam 1. Obviously, when the vehicle hits the side, the collision force at the door sill beam 1 can be better transmitted to the rear seat cross beam 302, and the rear seat cross beam 302 can be fully utilized to transmit and eliminate the collision force, which is conducive to improving the safety of the side collision.

[0092] Of course, in addition to making the end cross-section of the front seat beam 301 include two parts respectively arranged corresponding to the side and top of the door sill beam 1, and making the end of the rear seat beam 302 correspond to the side setting of the door sill beam 1 as a whole, in the specific implementation, it is also possible to make each seat beam 3 on the front floor adopt the same setting form as the above-mentioned front seat beam 301, or make each seat beam 3 on the front floor adopt the same setting form as the above-mentioned rear seat beam 302.

[0093] The vehicle body side collision force transmission structure of this embodiment adopts the above design, by making each seat cross beam 3 arch upward as a whole, and making it possible for the collision force from the door sill beam 1 to be decomposed and transmitted along the left and right and up and down directions of the whole vehicle on each seat cross beam 3 when the vehicle has a side collision, and when the collision force is transmitted along each seat cross beam 3, it can have a vertical component force in addition to the horizontal force. Therefore, the vertical component force can make the compression deformation trend of each seat cross beam 3 upward, which can prevent the front floor structure from invading downward after the seat cross beam 3 is deformed, occupying the battery pack space and causing battery pack damage, thereby helping to reduce the risk of battery pack fire during vehicle side collision, and is conducive to improving the safety of the whole vehicle side collision.

[0094] Embodiment 2

[0095] The present embodiment relates to a vehicle, which is a new energy vehicle having a battery pack arranged at the front floor, and the vehicle body side impact force transmission structure in the first embodiment is arranged in the vehicle of the present embodiment.

[0096] The vehicle of this embodiment is provided with the vehicle body side collision force transmission structure of the first embodiment. When the vehicle has a side collision, the collision force is transmitted to the seat cross beams 3 on the front floor through the door sill beam 1. When transmitted along the seat cross beams 3, in addition to the horizontal force, it can also have a vertical upward component of force. In this way, the vertical component of force can make the extrusion deformation trend of each seat cross beam 3 upward, which can prevent the seat cross beams 3 from squeezing the front floor structure downward after deformation, occupying the battery pack space and causing damage to the battery pack, thereby helping to reduce the risk of battery pack fire in the case of a side collision of the vehicle and helping to improve the side collision safety of the entire vehicle.

[0097] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body side impact force transmission structure, characterized in that: It comprises a threshold beam (1) arranged on the left and right sides, and a seat cross beam (3) connected between the threshold beams (1) on the two sides; The seat crossbeam (3) comprises a front seat crossbeam (301) and a rear seat crossbeam (302) arranged at intervals along the front-rear direction of the vehicle, and the front seat crossbeam (301) and the rear seat crossbeam (302) are both arranged to be arched upward as a whole; When the threshold beams (1) on each side are subjected to collision force from the side of the vehicle, the collision force from the threshold beams (1) can be decomposed and transmitted on the front seat cross beam (301) and the rear seat cross beam (302) in two directions, namely, the left-right direction of the vehicle and the up-down direction of the vehicle.

2. The vehicle body side impact force transmission structure according to claim 1, characterized in that: Each of the seat cross beams (3) is an arc-shaped structure that gradually arches upward from the left and right ends to the middle in the left and right directions of the entire vehicle.

3. The vehicle body side impact force transmission structure according to claim 1, characterized in that: Each of the seat cross beams (3) is roll-formed, and the cross section of the seat cross beam (3) is a closed cross section with four sides closed or an open cross section with at least one side open; or, Each of the seat cross beams (3) is formed by stamping; or, Each of the seat cross beams (3) is made of extruded profiles.

4. The vehicle body side impact force transmission structure according to claim 1, characterized in that: Each of the seat cross beams (3) is an integral beam structure formed in one piece, or each of the seat cross beams (3) is a split beam structure composed of a plurality of split structures connected together.

5. The vehicle body side impact force transmission structure according to claim 1, characterized in that: The front seat cross beam (301) and the threshold beams (1) on both sides are transitionally connected via a front cross beam connecting bracket (5), and a seat front mounting bracket (8) is provided on the front seat cross beam (301).

6. The vehicle body side impact force transmission structure according to claim 1, characterized in that: The rear seat cross beam (302) is transitionally connected to the door sill beams (1) on both sides via a rear cross beam connecting bracket (6), and when viewed from the upper and lower directions of the vehicle, the rear seat cross beam (302) is arranged close to the front sides of the left and right B pillars (4); End reinforcement brackets (7) are respectively provided between the rear seat cross beam (302) and the door sill beams (1) on both sides, and the end reinforcement brackets (7) on both sides are located at the rear side of the rear seat cross beam (302).

7. The vehicle body side impact force transmission structure according to claim 6, characterized in that: A first seat rear mounting bracket (10) is provided on the end reinforcement bracket (7) on each side, and a second seat rear mounting bracket (9) is provided on the rear side of the rear seat cross beam (302), wherein the second seat rear mounting bracket (9) is located between the end reinforcement brackets (7) on both sides.

8. The vehicle body side impact force transmission structure according to claim 7, characterized in that: The end reinforcement brackets (7) on each side are structured to form a cavity with the rear seat cross beam (302) and the door sill beam (1) on the same side; and / or, At least one of the first seat rear mounting bracket (10) and the second seat rear mounting bracket (9) is in a box-shaped structure.

9. The vehicle body side impact force transmission structure according to any one of claims 1 to 8, characterized in that: When viewed from the left and right direction of the vehicle, the end section of the front seat cross beam (301) comprises a first portion (n) arranged corresponding to the side of the door sill beam (1), and a second portion (m) arranged corresponding to the top of the door sill beam (1), and the cross-sectional dimension of the first portion (n) is greater than the cross-sectional dimension of the second portion (m); and / or, The entire end of the rear seat cross beam (302) is arranged corresponding to the side of the door sill beam (1).

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body side impact force transmission structure according to any one of claims 1 to 9.

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