CN222698592U - Front floor beam structure and vehicle - Google Patents

Abstract

The utility model provides a front floor crossbeam structure and a vehicle. The front floor crossbeam structure of the utility model includes a seat crossbeam arranged between a threshold beam and a middle channel on a front floor panel; the end of the seat crossbeam connected to the threshold beam is arranged obliquely upward, and when the threshold beam is subjected to a collision force from the side of the vehicle, the collision force from the threshold beam can be decomposed and transmitted on the seat crossbeam in two directions, the left-right direction of the vehicle and the up-down direction of the vehicle. The utility model can reduce the collision impact on the battery pack when the vehicle is hit from the side, and is conducive to improving the collision safety of the battery pack.

Description

Front floor beam structure and vehicle

Technical Field

The utility model relates to the technical field of vehicle bodies, in particular to a front floor beam structure. The utility model also relates to a vehicle provided with the front floor beam structure.

Background

At present, a traditional vehicle body structure is also generally adopted by a new energy vehicle, because the seat cross beam on the front floor in the traditional vehicle body is of a straight structure, when the new energy vehicle is in side collision, the force transmission path of the seat cross beam is horizontally and transversely transmitted, the seat cross beam can deform under the transverse extrusion action of side collision force, and the seat cross beam is extruded and deformed and then invaded in the upper and lower directions of the front floor.

At this time, the front floor structure which invades downwards is easy to collide with the battery pack, so that the battery core is damaged by force, the battery pack is damaged, and the like, and even the battery pack is ignited when serious, so that the collision safety of the battery pack is not facilitated to be improved.

Disclosure of utility model

In view of the above, the present utility model is directed to a front floor cross member structure for improving crash safety of a battery pack.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

A front floor beam structure comprises a seat beam arranged between a threshold beam and a middle channel on a front floor panel;

the seat crossbeam with the one end that the threshold roof beam links to each other sets up obliquely upwards, and when the threshold roof beam receives the collision force from whole car side, come from the collision force of threshold roof beam can be in on the seat crossbeam along whole car left and right directions and whole car up-and-down direction two directions decompose the transmission.

Further, the seat cross beam is of an arc-shaped structure which gradually arches upwards from the left end and the right end to the middle part.

Further, a middle channel reinforcing longitudinal beam which is arranged along the front-back direction of the whole car is arranged on the middle channel;

and one end of the seat cross beam connected with the middle channel is at least partially overlapped with the projection of the middle channel reinforcing longitudinal beam in the left-right direction of the whole vehicle.

Further, the middle channel reinforcing longitudinal beam is positioned 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 in a surrounding shape.

Further, the seat cross beam is directly connected with the threshold beam and the middle channel, or the seat cross beam is in transitional connection with the threshold beam and the middle channel through a connecting bracket.

Further, a seat mounting bracket is arranged on the seat cross beam, and is of a box-shaped structure, and a cavity is formed between the seat mounting bracket and the seat cross beam in an enclosing mode.

Further, the seat cross beam is roll-formed, and the cross section of the seat cross beam is a closed section with closed periphery or an opening section with at least one side opening, or

The seat beam is formed by stamping, or

The seat cross beam adopts an extrusion profile.

Further, the cross section of the end part of the seat cross beam is provided with a first part which is arranged corresponding to the side part of the threshold beam and a second part which is arranged corresponding to the top part of the threshold beam when seen from the left-right direction of the whole vehicle;

The first portion has a cross-sectional dimension that is greater than a cross-sectional dimension of the second portion.

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

According to the front floor beam structure, the end, connected with the seat beam and the threshold beam, of the seat beam is obliquely upwards arranged, and collision force from the threshold beam can be decomposed and transferred in the left-right direction and the up-down direction of the whole vehicle on the seat beam during side collision of the vehicle, so that when the side collision of the vehicle occurs, the collision force is transferred along the seat beam, besides horizontal force, a vertical component force exists, the vertical component force can enable the extrusion deformation trend of the seat beam to be upwards, namely the seat beam is led to be upwards deformed, the situation that the front floor structure is extruded downwards after the seat beam is deformed to invade and occupy the battery pack space, the battery pack is damaged, and the safety of the battery pack during collision is facilitated.

In addition, make the seat crossbeam be the arc structure, can carry out the upward on the basis of decomposing to the collision force when the vehicle side bumps, also make the collision force can transversely transmit betterly to guarantee the transmission dispersion effect to the collision force, simultaneously, the seat crossbeam is the arc, also available arc structural strength big characteristics, ensure the structural strength of seat crossbeam self. The middle channel is provided with the middle channel reinforcing longitudinal beam, one end of the seat cross beam connected with the middle channel is at least partially overlapped with the projection of the middle channel reinforcing longitudinal beam in the left-right direction of the whole vehicle, so that the transverse collision bearing capacity of the middle channel can be ensured, and the downward invasion of one end of the seat cross beam connected with the middle channel is avoided.

And secondly, the middle channel reinforcing longitudinal beam is positioned at the bottom of the middle channel, so that the middle channel reinforcing longitudinal beam can be conveniently arranged on the middle channel, a forming cavity is formed between the middle channel reinforcing longitudinal beam and the middle channel in an enclosing mode, the characteristic of high structural strength of the cavity can be utilized, the rigidity of the middle channel reinforcing longitudinal beam is increased, and the transverse bearing capacity of the middle channel position is further ensured. The seat cross beam is directly connected with the door sill beam and the middle channel, so that the number of vehicle body parts can be reduced, the weight of the vehicle body can be reduced, the seat cross beam is connected with the door sill beam and the middle channel through the connecting bracket, the connection difficulty can be reduced, and the connection operation between the seat cross beam and the door sill beam can be facilitated.

Furthermore, the setting of seat installing support can be convenient for the installation of vehicle seat for form the cavity between seat installing support and the seat crossbeam, can improve the rigidity of seat installing support, promote the reliability of vehicle seat installation. The seat cross beam is rolled and formed, and the cross section of the seat cross beam is a closed section or an opening section with a side opening, so that the seat cross beam can be conveniently prepared, and the structural strength of the seat cross beam can be ensured. The seat cross beam is formed by stamping, or the seat cross beam is made of an extrusion profile, so that the seat cross beam can be conveniently manufactured, and the structural strength of the seat cross beam can be guaranteed.

In addition, in the end section of the seat beam, the cross section size of the first part corresponding to the side part of the threshold beam is larger than the cross section size of the second part corresponding to the top part of the threshold beam, so that side collision of a vehicle can be avoided, the threshold beam and the end part of the seat beam are relatively positioned and separated in the process of the threshold Liang Nayi, the seat beam cannot participate in collision force transmission, and the collision safety is affected.

Another object of the present utility model is to propose a vehicle in which the front floor cross member structure as described above is provided.

Further, a front floor upper longitudinal beam and/or a front floor lower longitudinal beam extending along the front-rear direction of the whole vehicle are arranged on the front floor panel;

The front floor upper longitudinal beam is positioned above the front floor panel, the front end of the front floor upper longitudinal beam extends out to the front of the front floor panel, and the rear end of the front floor upper longitudinal beam extends backwards through a gap between the seat cross beam and the front floor panel;

The front floor side sill is located below the front floor panel, the front end of the front floor side sill is close to the front end of the front floor panel, and the rear end of the front floor side sill extends towards the rear end of the front floor panel.

By arranging the front floor beam structure, the vehicle can avoid the situation that the seat beam is deformed and then extrudes the front floor structure to invade downwards when the vehicle collides laterally, and the battery pack is damaged due to the extrusion of the space of the battery pack, so that the safety of the battery pack during collision is improved.

Moreover, through setting up the longeron on the front floor and the longeron under the front floor for the longeron extends backward through the clearance between seat crossbeam and the front floor panel on the front floor, can be when the longeron atress on the front floor is bumped to the vehicle, with the collision impact force to seat crossbeam rear transfer, extension power transmission route, make collision force fully conduct dispersion, be favorable to promoting the collision security of whole car. The arrangement of the front floor side sill can further increase the overall structural strength of the front floor, and can also increase a collision force transmission channel below the front floor, so that the transmission capability of collision force is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a front floor cross member structure in a vehicle body according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the bottom view of the structure of FIG. 1;

FIG. 3 is a top view of the structure shown in FIG. 1;

FIG. 4 is a schematic view of the connection between a seat cross beam and a rocker beam and a middle tunnel according to an embodiment of the present utility model;

FIG. 5 is a cross-sectional view of the position A-A of FIG. 3;

FIG. 6 is an exploded view of the impact forces on a seat beam according to an embodiment of the present utility model;

FIG. 7 is a schematic view of a seat cross member according to an embodiment of the present utility model;

FIG. 8 is a schematic view of a middle channel reinforcement stringer according to an embodiment of the present utility model;

FIG. 9 is a schematic view of a seat cross beam according to an embodiment of the present utility model, in cross section at an end portion thereof, disposed between a rocker beam and a seat cross beam;

reference numerals illustrate:

1. The door sill beam, the front floor panel, the seat cross beam, the connecting bracket, the front floor upper longitudinal beam, the front floor lower longitudinal beam, the middle channel reinforcing longitudinal beam, the seat mounting bracket and the seat mounting bracket are respectively arranged on the front floor upper longitudinal beam, the front floor lower longitudinal beam, the middle channel reinforcing longitudinal beam and the seat mounting bracket;

201. A middle channel;

And n, the seat cross beam and the first part which are arranged corresponding to the side part of the threshold beam.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. are presented, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, if any, are also used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the components may be fixedly connected, detachably connected or integrally connected, mechanically connected or electrically connected, directly connected or indirectly connected through an intermediate medium, or communicated with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The embodiment relates to a front floor beam structure, which is suitable for a new energy vehicle type provided with a battery pack and located below a front floor, and can reduce collision impact on the battery pack when a vehicle collides laterally through the structural design of the front floor beam structure, reduce the risk of fire of the battery pack and be beneficial to improving the collision safety of the battery pack.

The front floor cross member structure of the present embodiment includes, in its entire structure, from fig. 1 to 4, in combination with that shown in fig. 6, a seat cross member 3 provided between a threshold beam 1 and a center tunnel 201 on a front floor panel 2.

Wherein, seat crossbeam 3 and the one end that links to each other of threshold roof beam 1 set up obliquely upwards to when threshold roof beam 1 receives the collision force from whole car side, the collision force from threshold roof beam 1 can decompose the transmission along whole car left and right directions and whole car up-and-down direction on seat crossbeam 3.

At this time, set up as above, through making seat crossbeam 3 and the one end that links to each other of threshold roof beam 1 set up obliquely upwards, and make the vehicle side bump time, the collision force from threshold roof beam 1 can be along two directions about the whole car on seat crossbeam 3, this embodiment can bump on the vehicle side, the collision force is when transmitting along seat crossbeam 3, except having the horizontally directed force, also there is vertically ascending component, and the vertically directed component can make seat crossbeam 3 extrusion deformation trend upwards, floor structure invades downwards before can avoiding seat crossbeam 3 to warp after the extrusion, squeeze the battery package space, cause the battery package to destroy, and then can reach the effect that promotes the security when battery package bumps.

Based on the above overall description, in particular, it is to be noted that, as shown in fig. 1 to 3 as well, in view of the fact that the seat cross members 3 on the left and right sides of the center tunnel 201 in the vehicle body are generally symmetrically arranged, the seat cross members 3 on one side thereof will be illustrated as shown in fig. 4 in the present embodiment.

At this time, as a preferred embodiment, for the seat cross member 3 disposed obliquely upward at one end connected to the threshold beam 1, it may be generally disposed so that the seat cross member 3 is entirely upwardly arched, and in the practical implementation, as shown in fig. 1 to 4, and in combination with fig. 5, the seat cross member 3 of the present embodiment may be, for example, an arc-shaped structure gradually upwardly arched from both left and right ends toward the middle.

At this time, make seat crossbeam 3 be the arc structure, can carry out the upward on the basis of decomposing to the collision force when the vehicle side bumps, also make the collision force horizontal transmission betterly to guarantee the transmission dispersion effect to the collision force, simultaneously, seat crossbeam 3 is the arc, and its also available arc structural strength big characteristics ensure the structural strength of seat crossbeam 3 self.

Of course, instead of the seat cross member 3 being of an overall arcuate configuration, in other possible embodiments, the seat cross member 3 of the present embodiment may be of other configurations that allow for upward resolution of the side impact forces. For example, the end of the seat cross member 3 connected to the rocker beam 1 may be made to be a straight structure arranged obliquely and arranged gradually higher in the direction from the rocker beam 1 to the middle tunnel 201, while the end connected to the middle tunnel 201 may be made to be a straight structure arranged horizontally, and the above-mentioned straight structure arranged obliquely and the straight structure arranged horizontally are connected to each other to jointly constitute the seat cross member 3 of the present embodiment.

In the present embodiment, it is preferable that the end of the seat cross member 3 connected to the middle tunnel 201 be generally attachable to the side wall of the middle tunnel 201, and further, as a preferable embodiment, as further shown in fig. 1 to 5, the present embodiment may also be provided with the middle tunnel reinforcement side member 7 arranged in the front-rear direction of the whole vehicle on the middle tunnel 201, for example, while the end of the seat cross member 3 connected to the middle tunnel 201 also at least partially overlaps with the projection of the middle tunnel reinforcement side member 7 in the left-right direction of the whole vehicle.

Thus, by providing the center tunnel reinforcement side member 7 on the center tunnel 201, and making the end of the seat cross member 3 connected to the center tunnel 201 at least partially overlap with the projection of the center tunnel reinforcement side member 7 in the right-left direction of the entire vehicle, that is, making the end of the seat cross member 3 connected to the center tunnel 201 and the center tunnel reinforcement side member 7 be joined and provided at least in the right-left direction of the entire vehicle, it is understood that it is possible to secure the lateral collision resistance at the center tunnel 201, and it is possible to avoid the downward invasion of the end of the seat cross member 3 connected to the center tunnel 201 when the vehicle side collision occurs.

In addition, from the perspective of the whole front floor shown in fig. 1, by connecting the seat cross members 3 on the left and right sides of the center tunnel 201 with the center tunnel reinforcing stringers 7 and the rocker beams 1 on the same side, it is possible to form a front floor spread-type skeleton structure consisting of the rocker beams 1, the seat cross members 3 and the center tunnel reinforcing stringers 7 on each side in the vehicle body, and it is also possible to well increase the rigidity of the front floor position.

In this embodiment, for example, as shown in fig. 8, the middle channel reinforcing longitudinal beam 7 may be a sheet metal part formed by stamping, and may be generally fixed to the middle channel 201 by welding. Of course, it is also possible to use a sheet metal part instead of the middle tunnel reinforcing side member 7 in a beam structure such as an extrusion, and also to fix it to the middle tunnel 201 by welding or the like.

In addition, as a preferred embodiment, the middle tunnel reinforcing side member 7 may be located at the bottom of the middle tunnel 201, for example, and when the middle tunnel reinforcing side member 7 is a sheet metal member formed by press molding, a cavity extending in the front-rear direction of the entire vehicle may be formed between the middle tunnel reinforcing side member 7 and the middle tunnel 201.

In this way, the placement of the middle channel reinforcing stringers 7 on the bottom of the middle channel 201 may be facilitated. Meanwhile, a forming cavity is formed between the middle channel reinforcing longitudinal beam 7 and the middle channel 201 in an enclosing mode, the rigidity of the middle channel reinforcing longitudinal beam 7 can be increased by utilizing the characteristic that the structural strength of the cavity is high, and the transverse bearing capacity of the position of the middle channel 201 can be further ensured.

It should be noted that, in the implementation, in addition to the above-mentioned middle channel reinforcing stringers 7, when the middle channel 201 on the front floor panel 2 has higher structural rigidity and higher lateral bearing capacity, the middle channel reinforcing stringers 7 may not be disposed at the middle channel 201, so as to facilitate weight reduction at the front floor. However, when the seat cross member 3 is provided in an arc-shaped structure, in order to avoid downward invasion of the end of the seat cross member 3 connected to the middle channel 201, which would cause downward invasion of the front floor, and affect the installability of the battery pack, the middle channel reinforcement longitudinal member 7 connected to the seat cross member 3 should be generally provided at the middle channel 201.

It should be noted that, in addition to being fixedly connected to the center tunnel 201, the center tunnel reinforcement side member 7 may be provided with a front end that is connected to a front lower cross member together with the center tunnel 201, for example, from the viewpoint of the entire vehicle body, and a rear end of the center tunnel reinforcement side member 7 may be connected to other front floor cross members that are connected to the rocker beam 1 behind the seat cross member 3, so as to better secure the lateral support and reinforcement effect of the center tunnel reinforcement side member 7.

In this embodiment, in the concrete preparation, the seat cross member 3 may be roll-formed, for example, as shown in fig. 7, and in the roll-forming, the cross section of the seat cross member 3 may be a closed section with a closed periphery, or may be an open section with at least one side open. At this time, the seat cross beam 3 is roll-formed, and the cross section of the seat cross beam 3 is a closed section, or an opening section with a side opening is formed, so that the seat cross beam 3 can be conveniently prepared, and the structural strength of the seat cross beam can be ensured.

The shape of the closed cross section formed by rolling may include, but is not limited to, a "Chinese character" and a "mu" shape, and the shape of the open cross section may include, but is not limited to, an "M" shape, an "Ω" shape, and the like.

In this embodiment, instead of roll forming, for example, the seat cross member 3 may be press formed, or an extrusion material may be used for the seat cross member 3. At this time, the seat cross beam 3 is formed by stamping, or the seat cross beam 3 is made of an extrusion profile, so that the seat cross beam 3 can be conveniently prepared, and the structural strength of the seat cross beam 3 can be ensured.

When the seat cross member 3 is press-formed, the cross-sectional shape of the seat cross member 3 may include, but is not limited to, an "M" shape, an "Ω" shape, or the like, as a possible example. When the seat cross member 3 is an extruded material, the cross section of the seat cross member 3 may be a closed cross section or an open cross section with a side opening, similar to the roll forming process described above, and the closed cross section may be in a shape of "Chinese character 'ri'," mu 'or the like, but may be in a shape of "Chinese character' tian ', or any other shape having a plurality of closed cavities, and the open cross section may be in a shape of" M', "Ω" or the like.

In the embodiment, the seat cross beam 3 is directly connected with the door sill beam 1 and the middle tunnel 201 in the implementation, and besides the direct connection, the seat cross beam 3 can be transitionally connected with the door sill beam 1 and the middle tunnel 201 through the connecting bracket 4.

At this time, the seat cross member is directly connected with the sill beam 1 and the middle tunnel 201, so that the number of parts of the vehicle body can be reduced, the weight of the vehicle body can be reduced, and the seat cross member 3 is connected with the sill beam 1 and the middle tunnel 201 through the connecting bracket 4, so that the connection difficulty can be reduced, and the connection operation between the seat cross member and the sill beam 1 can be facilitated.

Specifically, for the direct connection between the seat cross member 3 and the rocker beam 1 and the middle tunnel 201, it is usual to join them together by means of welding after the end of the seat cross member 3 has been butted against the rocker beam 1 and the middle tunnel 201. For the mode of transitional connection through the connecting bracket 4, the connecting brackets 4 positioned at each end of the seat cross beam 3 can also be made of stamping formed sheet metal parts, and in the specific implementation, the connecting brackets 4 are welded on the seat cross beam 3, and after the connecting brackets 4 are lapped between the threshold beam 1 and the middle channel 201, the connecting brackets can also be fixedly connected together by utilizing a welding mode.

In this embodiment, in order to facilitate the installation of the vehicle seat, as a preferred embodiment, a seat mounting bracket 8 is also provided on the seat cross member 3.

In particular, and as shown in connection with fig. 4, the seat mounting bracket 8 may generally be a stamped sheet metal structure, and may specifically be a stamped box-like structure, and may define a cavity with the seat rail 3. So, utilize the box type structure of seat installing support 8 self, cooperate in its and seat crossbeam 3 enclose the configuration and form the cavity again, just can make seat installing support 8 have fine structural strength, and then can promote the rigidity of the front mounting point of seat, guarantee the reliability of seat installation.

It should be noted that, instead of using the above-mentioned box-shaped structure for the seat mounting bracket 8, it is of course possible to use a bracket structure such as roll-formed or an extruded bracket structure for the seat mounting bracket 8 in practice.

Furthermore, it should be noted that, depending on the installation requirement of the seat, the seat mounting brackets 8 on the seat cross member 3 are usually a plurality of spaced-apart seat mounting brackets 8 may have the same structure and the same height, or the plurality of seat mounting brackets 8 may be slightly different in structure and have different heights, which are all designed according to the specific installation requirement of the seat.

In this embodiment, as a preferred embodiment, as shown in fig. 9, for the connection between the seat cross member 3 and the rocker 1, for example, the end section of the seat cross member 3 may have a first portion n provided corresponding to the side portion of the rocker 1 and a second portion m provided corresponding to the top portion of the rocker 1, and the cross-sectional dimension of the first portion n may be larger than the cross-sectional dimension of the second portion m, as viewed from the left-right direction of the entire vehicle.

In this way, by making the cross-sectional dimension of the first portion n corresponding to the side portion of the rocker beam 1 larger than the cross-sectional dimension of the second portion m corresponding to the top portion of the rocker beam 1 in the end section of the seat cross beam 3, it can be understood that when a side collision occurs on the vehicle, the relative displacement between the rocker beam 1 and the end portion of the seat cross beam 3 can be avoided during the moving process of the rocker beam 1, so that the seat cross beam 3 cannot participate in the collision force transmission, and the collision safety of the whole vehicle is affected.

Among the end sections of the seat cross member 3, the cross-sectional dimension of the first portion n corresponding to the side of the threshold beam 1 and the cross-sectional dimension of the second portion m corresponding to the top of the threshold beam 1 may be set according to the overall radian of the seat cross member 3, the arrangement height of the seat cross member 3 on the front floor, the size of the overall cross-section of the end of the seat cross member 3, and the like. In general, it is sufficient to make the cross-sectional size of the first portion n corresponding to the side of the rocker 1 larger than the cross-sectional size of the second portion m corresponding to the top of the rocker 1, and to make the cross-sectional size of the first portion n corresponding to the side of the rocker 1 as larger as possible.

The front floor beam structure of this embodiment adopts the design as above, through making seat crossbeam 3 and the one end that links to each other with threshold roof beam 1 upwards set up to especially can be the arc structure of arch, can bump in the vehicle side, when the collision force was passed along seat crossbeam 3, make the collision force also have vertical ascending component, and the component of vertical direction can make seat crossbeam extrusion deformation trend upwards, can avoid seat crossbeam to warp the back and extrude the front floor structure and invade downwards, squeeze up battery package space, cause the battery package to destroy, and help promoting the security when the battery package bumps.

Example two

The present embodiment relates to a vehicle in which the front floor cross member structure in the first embodiment is provided.

Further, as a preferred embodiment, referring still to fig. 1 to 5, in the present embodiment, a front floor upper side member 5 and a front floor lower side member 6 extending in the entire vehicle front-rear direction are also provided on the front floor panel 2.

Preferably, the front floor upper side members 5 and the front floor lower side members 6 are provided on the front floor panels 2 on both the left and right sides of the middle tunnel 201. At the same time, the front floor upper side member 5 is located above the front floor panel 2, and the front end of the front floor upper side member 5 protrudes forward of the front floor panel 2, and the rear end of the front floor upper side member 5 extends rearward through the gap between the seat cross member 3 and the front floor panel 2. The front underfloor side rail 6 is located below the front floor panel 2 and is disposed vertically corresponding to the front underfloor side rail 5, and the front end of the front underfloor side rail 6 is close to the front end of the front floor panel 2, and the rear end of the front underfloor side rail 6 extends toward the rear end of the front floor panel 2.

It can be understood that by arranging the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6, the front floor upper longitudinal beam 5 extends backward through the gap between the seat cross beam 3 and the front floor panel 2, and when the front floor upper longitudinal beam is stressed by the vehicle, the front collision force can be transferred to the rear of the seat cross beam, so that the force transfer path is prolonged, the collision force is fully conducted and dispersed, and the collision safety of the whole vehicle is improved.

By providing the front floor side sills 6, the overall structural strength of the front floor position can be further increased, and a collision force transmission passage can be also provided below the front floor panel 2, which contributes to an improvement in the transmission capability of collision force.

In a specific implementation, the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6 may be conventional sheet metal beams formed by stamping. Meanwhile, the front floor upper side member 5 and the front floor lower side member 6 may be generally connected to the front floor panel 2 by welding, and preferably, may also form a cavity extending in the front-rear direction of the entire vehicle with the front floor panel 2 after being connected to the front floor panel 2. Therefore, by utilizing the characteristic of large structural strength of the cavity, the respective structural strength of the front floor upper longitudinal beam 5 and the front floor lower longitudinal beam 6 can be ensured, and the structural reinforcing effect of the front floor upper longitudinal beam and the front floor lower longitudinal beam is improved.

According to the vehicle provided by the embodiment, the front floor beam structure is arranged, so that the situation that the front floor beam structure is extruded downwards after the seat beam is deformed to invade when the vehicle is in side collision can be avoided, the space of a battery pack is occupied, the battery pack is damaged, and the safety of the battery pack during collision is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a preceding floor crossbeam structure which characterized in that:

comprises a seat cross beam (3) arranged between a threshold beam (1) and a middle channel (201) on a front floor panel (2);

The seat cross beam (3) and one end connected with the threshold beam (1) are arranged obliquely upwards, and when the threshold beam (1) receives collision force from the side face of the whole vehicle, the collision force from the threshold beam (1) can be decomposed and transferred on the seat cross beam (3) along the left-right direction of the whole vehicle and the up-down direction of the whole vehicle.

2. The front floor cross beam structure according to claim 1, wherein:

The seat cross beam (3) is of an arc-shaped structure which gradually arches upwards from the left end and the right end to the middle part.

3. The front floor cross beam structure according to claim 2, wherein:

The middle channel (201) is provided with middle channel reinforcing longitudinal beams (7) which are arranged along the front-back direction of the whole car;

One end of the seat cross beam (3) connected with the middle channel (201) is at least partially overlapped with the projection of the middle channel reinforcing longitudinal beam (7) in the left-right direction of the whole vehicle.

4. A front floor cross beam structure according to claim 3, wherein:

The middle channel reinforcing longitudinal beam (7) is positioned at the bottom of the middle channel (201), and a cavity extending along 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 cross beam structure according to claim 1, wherein:

The seat cross beam (3) is directly connected with the threshold beam (1) and the middle channel (201), or the seat cross beam (3) is in transitional connection with the threshold beam (1) and the middle channel (201) through a connecting bracket (4).

6. The front floor cross beam structure according to claim 1, wherein:

the seat cross beam (3) is provided with a seat mounting bracket (8), and the seat mounting bracket (8) is of a box-shaped structure and forms a cavity with the seat cross beam (3) in an enclosing shape.

7. The front floor cross beam structure according to claim 1, wherein:

The seat cross beam (3) is formed by rolling, and the cross section of the seat cross beam (3) is a closed section with closed periphery or an opening section with at least one side open, or

The seat cross beam (3) is formed by stamping, or

The seat cross beam (3) adopts an extrusion profile.

8. The front floor cross member structure according to any one of claims 1 to 7, wherein:

The cross section of the end part of the seat cross beam (3) is provided with a first part (n) which is arranged corresponding to the side part of the threshold beam (1) and a second part (m) which is arranged corresponding to the top part of the threshold beam (1) when the whole vehicle is seen from the left-right direction;

The first portion (n) has a cross-sectional dimension that is greater than a 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:

A front floor upper longitudinal beam (5) and/or a front floor lower longitudinal beam (6) which extend along the front-rear direction of the whole vehicle are arranged on the front floor panel (2);

The front floor upper longitudinal beam (5) is positioned above the front floor panel (2), the front end of the front floor upper longitudinal beam (5) extends out to the front of the front floor panel (2), and the rear end of the front floor upper longitudinal beam (5) penetrates through a gap between the seat cross beam (3) and the front floor panel (2) to extend backwards;

The front underfloor girder (6) is positioned below the front floor panel (2), the front end of the front underfloor girder (6) is close to the front end of the front floor panel (2), and the rear end of the front underfloor girder (6) extends to the rear end of the front floor panel (2).