Front floor beam structure and vehicle

Abstract

The utility model provides a front floor cross beam structure and a vehicle. The front floor cross beam structure comprises a seat cross beam arranged between a doorsill beam and a middle channel on a front floor panel. The end, connected with the threshold beam, of the seat cross beam is arranged obliquely upwards, and when the threshold beam is subjected to collision force from the side face of the whole vehicle, the collision force from the threshold beam can be decomposed and transmitted on the seat cross beam in the left-right direction and the up-down direction of the whole vehicle. According to the utility model, the collision impact on the battery pack can be reduced during the side collision of the vehicle, and the collision safety of the battery pack can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, and in particular to a front floor crossbeam structure. The utility model also relates to a vehicle provided with the front floor crossbeam structure. Background Art

[0002] At present, new energy vehicles generally also adopt traditional body structures. Since the seat beam on the front floor of the traditional body is a straight structure, when the new energy vehicle has a side collision, the force transmission path of the seat beam is horizontal and lateral. Under the lateral squeezing effect of the side collision force, the seat beam will be deformed, and after the seat beam is squeezed and deformed, it will invade the upper and lower directions of the front floor.

[0003] At this time, the front floor structure that intrudes downwards 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, which is not conducive to improving the collision safety of the battery pack. Utility Model Content

[0004] In view of this, the utility model aims to propose a front floor beam structure to help improve the collision safety of the battery pack.

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

[0006] A front floor cross member structure includes a seat cross member disposed between a sill beam and a center channel on a front floor panel;

[0007] One end of the seat cross beam connected to the door sill beam is arranged obliquely upward, and when the door sill beam is subjected to a collision force from the side of the vehicle, the collision force from the door sill beam can be decomposed and transmitted on the seat cross beam in two directions: the left-right direction of the vehicle and the up-down direction of the vehicle.

[0008] Furthermore, the seat crossbeam is an arc-shaped structure that gradually arches upward from the left and right ends to the middle.

[0009] Furthermore, the central channel is provided with a central channel reinforcing longitudinal beam arranged along the front-rear direction of the vehicle;

[0010] One end of the seat cross beam connected to the central channel at least partially overlaps with the projection of the central channel reinforcing longitudinal beam in the left-right direction of the vehicle.

[0011] Furthermore, the middle channel reinforcing longitudinal beam is located at the bottom of the middle channel, and a cavity extending along the front-rear direction of the whole vehicle is formed between the middle channel reinforcing longitudinal beam and the middle channel.

[0012] Furthermore, the seat cross beam is directly connected to the door sill beam and the middle channel, or the seat cross beam is transitionally connected to the door sill beam and the middle channel via a connecting bracket.

[0013] Furthermore, a seat mounting bracket is provided on the seat cross beam, and the seat mounting bracket is in a box-shaped structure, and a cavity is formed between the seat cross beam and the seat mounting bracket.

[0014] Further, the seat cross beam 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,

[0015] The seat crossbeam is formed by stamping; or,

[0016] The seat crossbeam is made of extruded profile.

[0017] Further, viewed from the left and right direction of the vehicle, the end section of the 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;

[0018] The cross-sectional dimension of the first portion is greater than the cross-sectional dimension of the second portion.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The front floor crossbeam structure described in the present invention is configured such that one end of the seat crossbeam connected to the door sill beam is arranged obliquely upward, and when the vehicle is hit sideways, 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 is hit sideways and 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 tend to be squeezed and deformed upward, that is, guide the seat crossbeam to deform upward, to avoid the seat crossbeam from squeezing the front floor structure downward after deformation, occupying the battery pack space and causing battery pack damage, thereby helping to improve the safety of the battery pack during collision.

[0021] In addition, the seat crossbeam is an arc-shaped structure, which can decompose the collision force upward when the vehicle hits 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 an arc-shaped structure, which can also take advantage of the high strength of the arc structure to ensure the structural strength of the seat crossbeam itself. A middle channel reinforcement longitudinal beam is set on the middle channel, and the end of the seat crossbeam connected to the middle channel is at least partially overlapped with the projection of the middle channel reinforcement longitudinal beam in the left and right direction of the whole vehicle, which can ensure the lateral collision bearing capacity of the middle channel and avoid the end of the seat crossbeam connected to the middle channel from invading downward.

[0022] Secondly, the middle channel reinforcement longitudinal beam is located at the bottom of the middle channel, which can facilitate its arrangement on the middle channel, so that a cavity is formed between the middle channel reinforcement longitudinal beam and the middle channel. The high strength of the cavity structure can be used to increase the rigidity of the middle channel reinforcement longitudinal beam, further ensuring the lateral load-bearing capacity of the middle channel. The seat crossbeam is directly connected to the sill beam and the middle channel, which can reduce the number of body parts and is conducive to body weight reduction. The seat crossbeam is connected to the sill beam and the middle channel through a connecting bracket, which can reduce the difficulty of connection and facilitate the connection operation between them.

[0023] Furthermore, the arrangement of the seat mounting bracket can facilitate the installation of the vehicle seat, so that a cavity is formed between the seat mounting bracket and the seat crossbeam, which can improve the rigidity of the seat mounting bracket and enhance the reliability of the vehicle seat installation. 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 extruded, which can also facilitate the preparation of the seat crossbeam and help ensure the structural strength of the seat crossbeam.

[0024] In addition, the cross-sectional size of the first part of the end section of the seat cross beam corresponding to the side of the sill beam is made larger than the cross-sectional size of the second part corresponding to the top of the sill beam, which can avoid side collision of the vehicle. During the inward movement of the sill beam, the sill beam and the end of the seat cross beam are relatively positioned and disengaged, causing the seat cross beam to be unable to participate in the collision force transmission, affecting the collision safety.

[0025] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the front floor crossbeam structure as described above.

[0026] Furthermore, the front floor panel is provided with a front floor upper longitudinal beam and / or a front floor lower longitudinal beam extending in the front-rear direction of the vehicle;

[0027] The front floor upper longitudinal beam is located above the front floor panel, and the front end of the front floor upper longitudinal beam extends forward of the front floor panel, and the rear end of the front floor upper longitudinal beam passes through the gap between the seat cross beam and the front floor panel and extends backward;

[0028] The front floor lower longitudinal beam is located below the front floor panel, and a front end of the front floor lower longitudinal beam is close to a front end of the front floor panel, and a rear end of the front floor upper longitudinal beam extends toward a rear end of the front floor panel.

[0029] The vehicle described in the utility model is provided with the above-mentioned front floor crossbeam structure, so that when the vehicle has a side collision, it can prevent the seat crossbeam from being deformed and squeezing the front floor structure downward, thereby occupying the battery pack space and causing damage to the battery pack, which helps to improve the safety of the battery pack in the event of a side collision.

[0030] Moreover, by setting the upper longitudinal beam and the lower longitudinal beam on the front floor, the upper longitudinal beam on the front floor extends backward through the gap between the seat cross beam and the front floor panel, so that when the vehicle collides head-on with the upper longitudinal beam on the front floor, the head-on collision force can be transmitted to the rear of the seat cross beam, extending the force transmission path, so that the collision force is fully transmitted and dispersed, which is beneficial to improving the collision safety of the whole vehicle. The setting of the lower longitudinal beam on the front floor can further increase the overall structural strength of the front floor position, and can also increase a collision force transmission channel under the front floor to improve the transmission capacity of the collision force. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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:

[0032] Figure 1 This is a schematic diagram of the arrangement of the front floor crossbeam structure in a vehicle body according to an embodiment of the utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the structure shown from a bottom perspective;

[0034] Figure 3 for Figure 1 a top view of the structure shown;

[0035] Figure 4 It is a schematic diagram of the connection between the seat crossbeam, the door sill beam and the middle channel according to an embodiment of the utility model;

[0036] Figure 5 for Figure 3 Cross-section at the AA position;

[0037] Figure 6 This is a schematic diagram of the decomposition of the collision force on the seat crossbeam according to the embodiment of the utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the seat crossbeam according to an embodiment of the utility model;

[0039] Figure 8 This is a schematic diagram of the structure of the middle channel reinforcement longitudinal beam according to an embodiment of the utility model;

[0040] Fig. 9 It is a schematic diagram of the corresponding arrangement between the end section of the 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. Connecting bracket; 5. Front floor upper longitudinal beam; 6. Front floor lower longitudinal beam; 7. Middle channel reinforcement longitudinal beam; 8. Seat mounting bracket;

[0043] 201, Middle Channel;

[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 front floor cross beam structure, which is suitable for new energy vehicle models that are provided with a battery pack, and the battery pack is located under the front floor. The front floor cross beam structure of the present embodiment can reduce the collision impact on the battery pack and reduce the risk of fire of the battery pack when the vehicle collides with the side through its structural design, which is beneficial to improving the collision safety of the battery pack.

[0051] In terms of overall structure, Figures 1 to 4 , and combined with Figure 6 As shown in , the front floor cross beam structure of the present embodiment includes a seat cross beam 3 provided between a door sill beam 1 and a center channel 201 on a front floor panel 2 .

[0052] Among them, one end of the seat cross beam 3 connected to the door sill beam 1 is set obliquely upward, and when the door sill beam 1 is subjected to a collision force from the side of the vehicle, the collision force from the door sill beam 1 can be decomposed and transmitted on the seat cross beam 3 in two directions: the left and right direction of the vehicle and the up and down direction of the vehicle.

[0053] At this time, as set above, by making the end of the seat cross beam 3 connected to the door sill beam 1 be inclined upward, and when the vehicle collides sideways, the collision force from the door sill beam 1 can be decomposed and transmitted on the seat cross beam 3 along the left and right and up and down directions of the whole vehicle. In this embodiment, when the vehicle collides sideways and the collision force is transmitted along the seat cross 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 cross beam 3 squeeze and deform upward, which can avoid the seat cross beam 3 from squeezing the front floor structure downward after deformation, occupying the battery pack space and causing battery pack damage, thereby achieving the effect of improving the safety of the battery pack during collision.

[0054] Based on the above overall introduction, it should be pointed out that Figures 1 to 3 As shown in FIG. 1 , since the seat cross beams 3 located on the left and right sides of the central channel 201 in the vehicle body are usually arranged symmetrically, in this embodiment, Figure 4 As shown in the figure, the seat crossbeam 3 on one side is taken as an example for explanation.

[0055] At this time, as a preferred implementation form, for the seat crossbeam 3 connected to the threshold beam 1 and arranged obliquely upward, it can generally be arranged that the seat crossbeam 3 is arched upward as a whole, and in the specific implementation, it is still as follows Figures 1 to 4 , and combined with Figure 5 As shown in , the seat cross beam 3 of the present embodiment may be, for example, an arc-shaped structure that gradually arches upward from the left and right ends to the middle.

[0056] At this time, the seat cross beam 3 is made into an arc-shaped structure, which can not only decompose the collision force upward when the vehicle collides sideways, but also transmit the collision force laterally better to ensure the transmission and dispersion effect of the collision force. At the same time, the seat cross beam 3 is in an arc shape, which can also utilize the high strength of the arc structure to ensure the structural strength of the seat cross beam 3 itself.

[0057] Of course, in addition to making the seat cross beam 3 an overall upwardly arched arc structure, in other feasible implementation forms, the seat cross beam 3 of this embodiment can also adopt other structural forms that can decompose and transmit the side collision force upward. For example, the end of the seat cross beam 3 connected to the door sill beam 1 can be a straight structure arranged obliquely, and gradually raised along the direction from the door sill beam 1 to the middle channel 201, while the end connected to the middle channel 201 can be a straight structure arranged horizontally, and the above-mentioned straight structure arranged obliquely is connected to the straight structure arranged horizontally, together forming the seat cross beam 3 of this embodiment.

[0058] In this embodiment, preferably, one end of the seat cross beam 3 connected to the middle channel 201 can generally be connected to the side wall of the middle channel 201, and further, as a preferred implementation form, continue as follows Figures 1 to 5 As shown in the figure, in this embodiment, for example, a middle channel reinforcing longitudinal beam 7 arranged along the front-rear direction of the whole vehicle may also be provided on the middle channel 201. At the same time, one end of the seat cross beam 3 connected to the middle channel 201 also at least partially overlaps with the projection of the middle channel reinforcing longitudinal beam 7 in the left-right direction of the whole vehicle.

[0059] Therefore, by setting the middle channel reinforcing longitudinal beam 7 on the middle channel 201, and making the end of the seat cross beam 3 connected to the middle channel 201 at least partially overlap with the projection of the middle channel reinforcing longitudinal beam 7 in the left and right direction of the whole vehicle, that is, the end of the seat cross beam 3 connected to the middle channel 201 and the middle channel reinforcing longitudinal beam 7 are connected at least in the left and right direction of the whole vehicle. It can be understood that it can ensure the lateral collision bearing capacity at the middle channel 201, and can avoid the end of the seat cross beam 3 connected to the middle channel 201 from invading downward when the vehicle has a side collision.

[0060] In addition, from Figure 1 From the overall perspective of the front floor shown, through the connection between the seat cross beams 3 on the left and right sides of the central channel 201 and the central channel reinforcing longitudinal beams 7 and the door sill beams 1 on the same side, a front floor wing-type skeleton structure composed of the door sill beams 1 on each side, the seat cross beams 3 and the central channel reinforcing longitudinal beams 7 can be formed in the vehicle body, which can also greatly increase the rigidity of the front floor position.

[0061] In this embodiment, during specific implementation, the middle channel reinforcement longitudinal beam 7 can be, for example, Figure 8 The sheet metal parts shown in the figure are stamped and generally can be fixedly connected to the middle channel 201 by welding. Of course, in addition to using sheet metal parts, the middle channel reinforcement longitudinal beam 7 can also be fixedly connected to the middle channel 201 by welding or the like.

[0062] In addition, as a preferred implementation form, the middle-channel reinforcing longitudinal beam 7 can be located at the bottom of the middle channel 201, for example. When the middle-channel reinforcing longitudinal beam 7 is made of a stamping-formed sheet metal part, a cavity extending in the longitudinal direction of the whole vehicle can also be formed between the middle-channel reinforcing longitudinal beam 7 and the middle channel 201.

[0063] In this way, setting the middle-channel reinforcing longitudinal beam 7 at the bottom of the middle channel 201 facilitates its arrangement on the middle channel 201. At the same time, forming a cavity between the middle-channel reinforcing longitudinal beam 7 and the middle channel 201 can utilize the characteristic of the large structural strength of the cavity structure to increase the stiffness of the middle-channel reinforcing longitudinal beam 7, and further ensure the lateral load-bearing capacity of the position of the middle channel 201.

[0064] It should be noted that in specific implementation, in addition to the above-mentioned middle-channel reinforcing longitudinal beam 7 being provided, when the structural stiffness of the middle channel 201 on the front floor panel 2 is relatively high and has a large lateral load-bearing capacity, it is of course also possible not to provide the middle-channel reinforcing longitudinal beam 7 at the middle channel 201 to facilitate weight reduction at the front floor. However, when the seat crossbeam 3 is set as an arc-shaped structure, in order to prevent one end of the seat crossbeam 3 connected to the middle channel 201 from intruding downward and causing the front floor to intrude, affecting the battery pack installation, generally, a middle-channel reinforcing longitudinal beam 7 connected to the seat crossbeam 3 should be provided at the middle channel 201.

[0065] In addition, it should still be pointed out that in terms of the setting of the middle-channel reinforcing longitudinal beam 7, in addition to being fixedly connected to the middle channel 201, from the perspective of the overall vehicle body, its front end can also be connected to the front lower crossbeam in front together with the middle channel 201, for example. At the same time, the rear end of the middle-channel reinforcing longitudinal beam 7 can be connected to other front floor crossbeams located behind the seat crossbeam 3 and connected to the sill beam 1 to better ensure the lateral support and strengthening effect of the middle-channel reinforcing longitudinal beam 7.

[0066] In this embodiment, in specific preparation, in combination with Figure 7 As shown in, the seat crossbeam 3 can be roll-formed, for example. When the roll-forming method is adopted, the cross-section of the seat crossbeam 3 can be a closed cross-section surrounded by four sides, or it can also be an open cross-section with at least one side open. At this time, making the seat crossbeam 3 roll-formed and making the cross-section of the seat crossbeam 3 a closed cross-section or an open cross-section with a side opening facilitates the preparation of the seat crossbeam 3 and can also ensure its structural strength.

[0067] Among them, for the above-mentioned roll-formed closed cross-section, its shape can include but is not limited to the "day" shape and the "eye" shape. The shape of the above-mentioned open cross-section can include but is not limited to the "M" shape, the "Ω" shape, etc.

[0068] In this embodiment, in addition to using the roll forming method, as other preferred implementation forms, for example, the seat cross member 3 can also be formed by stamping, or the seat cross member 3 can also be an extruded profile. At this time, forming the seat cross member 3 by stamping or using an extruded profile for the seat cross member 3 can also facilitate the preparation of the seat cross member 3 and help ensure the structural strength of the seat cross member 3.

[0069] When the seat cross member 3 is formed by stamping, as a feasible example, the cross-sectional shape of the seat cross member 3 can include but is not limited to an "M" shape, an "Ω" shape, etc. When the seat cross member 3 uses an extruded profile, similar to the above roll forming process, the cross-section of the seat cross member 3 can also be a closed cross-section or an open cross-section with a side opening. At the same time, the shape of the closed cross-section can be not only an "8" shape, an "eye" shape, etc., but of course it can also be a "field" shape, as well as other shapes with multiple closed cavities, and the shape of the open cross-section can also be an "M" shape, an "Ω" shape, etc.

[0070] In this embodiment, during specific implementation, the seat cross member 3 is directly connected to the sill beam 1 and the middle channel 201, and in addition to being directly connected, of course, the seat cross member 3 can also be transitionally connected to the sill beam 1 and the middle channel 201 through a connecting bracket 4.

[0071] At this time, the direct connection of the seat cross member to the sill beam 1 and the middle channel 201 can reduce the number of vehicle body components and is beneficial to vehicle body weight reduction. While the connection of the seat cross member 3 to the sill beam 1 and the middle channel 201 through the connecting bracket 4 can reduce the connection difficulty and facilitate the connection operation between them.

[0072] Specifically, for the direct connection between the seat cross member 3, the sill beam 1, and the middle channel 201, it is usually after the end of the seat cross member 3 is butted against the sill beam 1 and the middle channel 201 that they are connected together by welding. For the method of transitional connection through the connecting bracket 4, the connecting brackets 4 located at each end of the seat cross member 3 can also be sheet metal parts formed by stamping. And during specific implementation, the connecting bracket 4 is welded to the seat cross member 3, and after the connecting bracket 4 overlaps with the sill beam 1 and the middle channel 201, they can also be fixedly connected together by welding.

[0073] In this embodiment, to facilitate the installation of the vehicle seat, as a preferred implementation form, a seat mounting bracket 8 is also provided on the seat cross member 3.

[0074] During specific implementation, in combination with Figure 4As shown in , the seat mounting bracket 8 can generally adopt a sheet metal structure formed by stamping, and can be stamped into a box-shaped structure, and can be surrounded by the seat cross beam 3 to form a cavity. In this way, by utilizing the box-shaped structure of the seat mounting bracket 8 itself, and then cooperating with the seat cross beam 3 to form a cavity, the seat mounting bracket 8 can have a good structural strength, thereby improving the rigidity of the front mounting point of the seat and ensuring the reliability of the seat installation.

[0075] It is worth noting that, in addition to making the seat mounting bracket 8 adopt a stamped box-shaped structure, in specific implementation, the seat mounting bracket 8 may also adopt a bracket structure such as a roll-formed bracket structure, or a bracket structure made of an extruded profile.

[0076] Moreover, it should be pointed out that, according to the installation requirements of the seat, the seat mounting brackets 8 located on the seat cross beam 3 are usually arranged in multiples at intervals. These multiple seat mounting brackets 8 can adopt the same structure and have the same height, or the multiple seat mounting brackets 8 can have slightly different structures and different heights, which can be designed according to the specific installation requirements of the seat.

[0077] In this embodiment, as a preferred implementation form, the connection between the seat cross beam 3 and the threshold beam 1 is continued as follows: Fig. 9 As shown, for example, when viewed from the left and right directions of the vehicle, the end section of the seat cross beam 3 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.

[0078] 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 seat cross beam 3 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 seat cross beam 3 from being disengaged due to relative displacement during the inward movement of the sill beam 1, resulting in the seat cross beam 3 being unable to participate in the collision force transmission, affecting the collision safety of the entire vehicle.

[0079] Among them, in the end section of the seat cross beam 3, 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 seat cross beam 3, the arrangement height of the seat cross beam 3 on the front floor, and the size of the overall cross-sectional size of the end of the seat cross beam 3. 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.

[0080] The front floor beam structure of the present embodiment adopts the above design, by making the end of the seat beam 3 connected to the door sill beam 1 be arranged obliquely upward, and in particular can be an upward arched arc structure, when the vehicle collides sideways and the collision force is transmitted along the seat beam 3, the collision force also has a vertical upward component, and the vertical component can make the seat beam squeeze and deform upward, which can prevent the seat beam from squeezing the front floor structure downward after deformation, occupying the battery pack space and causing damage to the battery pack, thereby helping to improve the safety of the battery pack during collision.

[0081] Embodiment 2

[0082] This embodiment relates to a vehicle, in which the front floor cross beam structure in the first embodiment is provided.

[0083] In addition, as a preferred embodiment, still refer to Figures 1 to 5 As shown, in this embodiment, a front floor upper longitudinal beam 5 and a front floor lower longitudinal beam 6 extending in the front-rear direction of the vehicle are also provided on the front floor panel 2 .

[0084] Preferably, a front floor upper longitudinal beam 5 and a front floor lower longitudinal beam 6 can be provided on the front floor panels 2 on both sides of the central channel 201. At the same time, the front floor upper longitudinal beam 5 is located above the front floor panel 2, and the front end of the front floor upper longitudinal beam 5 extends in front of the front floor panel 2, and the rear end of the front floor upper longitudinal beam 5 passes through the gap between the seat cross beam 3 and the front floor panel 2 and extends backward. The front floor lower longitudinal beam 6 is located below the front floor panel 2, and can be arranged corresponding to the front floor upper longitudinal beam 5 up and down, and the front end of the front floor lower longitudinal beam 6 is close to the front end of the front floor panel 2, and the rear end of the front floor lower longitudinal beam 6 extends to the rear end of the front floor panel 2.

[0085] It can be understood that by providing the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6, the front floor longitudinal beam 5 extends rearward through the gap between the seat cross beam 3 and the front floor panel 2. When the vehicle collides head-on with the front floor upper longitudinal beam and is subjected to force, the head-on collision force can be transmitted to the rear of the seat cross beam, thereby extending the force transmission path, allowing the collision force to be fully transmitted and dispersed, which is beneficial to improving the collision safety of the entire vehicle.

[0086] By disposing the front floor lower longitudinal beam 6, the overall structural strength of the front floor position can be further increased, and a collision force transmission channel can be added under the front floor panel 2, which helps to improve the collision force transmission capability.

[0087] In specific implementation, the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6 can be conventional stamped sheet metal beams. At the same time, the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6 can generally be connected to the front floor panel 2 by welding, and preferably, after being connected to the front floor panel 2, a cavity extending along the front and rear direction of the vehicle can be formed between the front floor panel 2. In this way, by utilizing the high strength of the cavity structure, the structural strength of the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6 can be ensured, and their structural reinforcement effect can be improved.

[0088] The vehicle of this embodiment, by providing the front floor crossbeam structure of the first embodiment, can prevent the seat crossbeam from deforming and squeezing the front floor structure downward when the vehicle is hit from the side, thereby occupying the battery pack space and causing damage to the battery pack, thereby helping to improve the safety of the battery pack in a collision.

[0089] 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 front floor beam structure, characterized in that: It comprises a seat crossbeam (3) arranged between a door sill beam (1) and a center channel (201) on a front floor panel (2); One end of the seat cross beam (3) connected to the door sill beam (1) is arranged obliquely upward, and when the door sill beam (1) is subjected to a collision force from the side of the vehicle, the collision force from the door sill beam (1) can be decomposed and transmitted on the seat cross beam (3) in two directions, the left-right direction of the vehicle and the up-down direction of the vehicle.

2. The front floor crossbeam structure according to claim 1, characterized in that: The seat crossbeam (3) is an arc-shaped structure that gradually arches upward from the left and right ends to the middle.

3. The front floor crossbeam structure according to claim 2, characterized in that: The middle channel (201) is provided with a middle channel reinforcing longitudinal beam (7) arranged along the front-rear direction of the whole vehicle; One end of the seat cross beam (3) connected to the central channel (201) at least partially overlaps with the projection of the central channel reinforcing longitudinal beam (7) in the left-right direction of the entire vehicle.

4. The front floor crossbeam structure according to claim 3, characterized in that: The middle channel reinforcing longitudinal beam (7) is located at the bottom of the middle channel (201), and a cavity extending in the front-rear direction of the whole vehicle is formed between the middle channel reinforcing longitudinal beam (7) and the middle channel (201).

5. The front floor crossbeam structure according to claim 1, characterized in that: The seat cross beam (3) is directly connected to the door sill beam (1) and the middle channel (201); or the seat cross beam (3) is transitionally connected to the door sill beam (1) and the middle channel (201) via a connecting bracket (4).

6. The front floor crossbeam structure according to claim 1, characterized in that: A seat mounting bracket (8) is provided on the seat cross beam (3); the seat mounting bracket (8) is a box-shaped structure and forms a cavity between the seat cross beam (3).

7. The front floor crossbeam structure according to claim 1, characterized in that: The seat cross beam (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, The seat crossbeam (3) is formed by stamping; or, The seat crossbeam (3) is made of extruded profile.

8. The front floor cross member structure according to any one of claims 1 to 7, characterized in that: When viewed from the left and right direction of the vehicle, the end section of the seat cross beam (3) 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); The cross-sectional dimension of the first portion (n) is greater than the cross-sectional dimension of the second portion (m).

9. A vehicle, characterized in that: The vehicle is provided with the front floor cross member structure according to any one of claims 1 to 8.

10. The vehicle according to claim 9, characterized in that: The front floor panel (2) is provided with a front floor upper longitudinal beam (5) and / or a front floor lower longitudinal beam (6) extending in the front-rear direction of the vehicle; The front floor upper longitudinal beam (5) is located above the front floor panel (2), and the front end of the front floor upper longitudinal beam (5) extends forward of the front floor panel (2), and the rear end of the front floor upper longitudinal beam (5) passes through the gap between the seat cross beam (3) and the front floor panel (2) and extends backward; The front floor lower longitudinal beam (6) is located below the front floor panel (2), and the front end of the front floor lower longitudinal beam (6) is close to the front end of the front floor panel (2), and the rear end of the front floor lower longitudinal beam (6) extends toward the rear end of the front floor panel (2).

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