CN222291830U - Lower body force transmission structure and vehicle - Google Patents

Abstract

The utility model provides a lower vehicle body force transfer structure and a vehicle, the lower vehicle body force transfer structure comprises main longitudinal force transfer channels which are arranged on two sides respectively, auxiliary longitudinal force transfer channels which are arranged on the outer sides of the main longitudinal force transfer channels on each side, and a first transverse force transfer channel, wherein each side of the main longitudinal force transfer channels comprises a front cabin longitudinal beam, a front floor longitudinal beam and a rear floor longitudinal beam, each side of the auxiliary longitudinal force transfer channels comprises a torsion box connected with the front cabin longitudinal beam, a threshold longitudinal beam rear connecting plate connected with the rear floor longitudinal beam and a threshold beam connected between the torsion box and the threshold longitudinal beam rear connecting plate, each first transverse force transfer channel comprises a front lower reinforcement beam, two ends of the front lower reinforcement beam are connected with the torsion boxes on two sides, and a longitudinal beam inner reinforcing plate connected with the front lower reinforcement beam is arranged on the inner side of each side of the front cabin longitudinal beam. The lower vehicle body force transmission structure can increase the collision force transmission path of the lower vehicle body, improve the transmission and dispersion effects of collision force, and is beneficial to improving the collision safety of the whole vehicle.

Description

Lower car body force transmission structure and car

Technical Field

The utility model relates to the technical field of vehicle bodies, in particular to a lower vehicle body force transmission structure. The utility model also relates to a vehicle provided with the lower vehicle body force transmission structure.

Background

At present, as people pay more attention to the safety of vehicle collision, the collision coping capability of the vehicle body has become an important aspect in the development work of vehicle bodies of vehicle enterprise developers.

Currently, in a vehicle, with a lower vehicle body as a basis of a whole vehicle structure, a force transmission structure on the lower vehicle body is mainly composed of a front cabin side member, a threshold member, a rear floor side member, a seat cross member, a rear floor cross member, and the like, which are longitudinally arranged. The existing lower vehicle body force transmission structure design can realize transmission and absorption of collision force to a certain extent, but has the defects of single force transmission path, unobvious transmission and absorption effects on the collision force and the like, thereby being unfavorable for improving the collision safety of the whole vehicle.

Disclosure of utility model

In view of the above, the present utility model aims to provide a lower body force transmission structure, so as to facilitate improving the collision safety of the whole vehicle.

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

The lower vehicle body force transmission structure comprises main longitudinal force transmission channels which are respectively arranged at the left side and the right side, auxiliary longitudinal force transmission channels which are positioned at the sides of the main longitudinal force transmission channels and are close to one side outside a vehicle along the left-right direction of the whole vehicle, and a first transverse force transmission channel;

Each side of the main longitudinal force transmission channel comprises a front cabin longitudinal beam, a front floor longitudinal beam and a rear floor longitudinal beam which are sequentially connected end to end;

Each side of the auxiliary longitudinal force transmission channel comprises a torsion box connected with the front cabin longitudinal beam on the same side, a threshold longitudinal beam rear connecting plate connected with the rear floor longitudinal beam on the same side and a threshold beam connected between the torsion box and the threshold longitudinal beam rear connecting plate;

The first transverse force transmission channel comprises a front lower reinforcement beam above the front cabin longitudinal beam at two sides, wherein the left end and the right end of the front lower reinforcement beam are respectively connected with the two sides of the torsion box, and longitudinal beam inner reinforcement plates connected with the front lower reinforcement beam are arranged on the inner sides of the front cabin longitudinal beam at each side.

Further, each side the front cabin longitudinal beam has a longitudinal beam front section and a longitudinal beam rear section that are connected, and from the up-down direction of the whole car, both sides the longitudinal beam front section is inclined to one side outside the car in the left-right direction of the whole car.

Further, from the up-down direction of the whole vehicle, the rear sections of the longitudinal beams on both sides incline to one side outside the vehicle in the left-right direction of the whole vehicle, and the front cabin longitudinal beams on each side form corners at the positions where the front sections of the longitudinal beams are connected with the rear sections of the longitudinal beams.

Further, the camber angle of the front section of the longitudinal beam on each side is between 6 DEG and 10 DEG, the camber angle of the rear section of the longitudinal beam on each side is between 22 DEG and 26 DEG, and/or,

The torsion box and the inner stringer stiffener are connected on each side at the location of the corner on the front cabin stringer on the same side.

Further, a threshold longitudinal beam connecting plate is connected between the front floor longitudinal beam on each side and the threshold beam on the same side;

The two sides of the threshold longitudinal beam connecting plates are connected with the seat cross beam in the up-down direction of the whole car, and/or the threshold longitudinal beam connecting plates on each side are arranged at intervals along the front-back direction of the whole car.

Further, a middle floor cross beam is connected between the front ends of the rear floor longitudinal beams at the two sides.

Further, a rear floor front cross beam is connected between the rear floor longitudinal beams at two sides;

The rear floor front cross beam and the threshold longitudinal beam rear connecting plates on the two sides are connected in the left-right direction of the whole vehicle, and a second transverse force transmission channel is formed.

Further, a rear floor middle cross beam and a rear floor rear cross beam are connected between the rear floor longitudinal beams at the two sides;

The rear floor rear cross beam is connected between the rear ends of the rear floor longitudinal beams at two sides, and the rear floor middle cross beam is positioned between the rear floor front cross beam and the rear floor rear cross beam.

Further, a middle front beam connecting beam extending along the front-rear direction of the whole car and/or a middle rear beam connecting beam extending along the front-rear direction of the whole car are connected between the rear floor front beam and the rear floor middle beam,

And a middle and rear beam connecting beam extending along the front and rear directions of the whole vehicle is connected between the rear floor middle beam and the rear floor rear beam.

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

According to the lower vehicle body force transmission structure, the main longitudinal force transmission channels formed by connecting the front cabin longitudinal beam, the front floor longitudinal beam and the rear floor longitudinal beam, the auxiliary longitudinal force transmission channels formed by connecting the torsion box, the threshold beam and the threshold longitudinal beam rear connecting plate, and the first transverse force transmission channels formed by the front surrounding lower reinforcing beam are arranged, so that a plurality of transversely and longitudinally interweaved force transmission channels can be formed in the lower vehicle body, the collision force transmission paths of the lower vehicle body can be increased, the collision force transmission dispersion effect is improved, and the whole vehicle collision safety is improved.

In addition, the front section of the longitudinal beam in the front engine room is arranged in a camber mode, so that the contact area between the barrier and the vehicle body during the small overlap collision can be enlarged, and the safety of the small overlap collision can be improved. The rear section of the longitudinal beam in the front engine room longitudinal beam is arranged in a camber mode, collision force of the front engine room longitudinal beam is transmitted to the front floor longitudinal beam and the threshold beam, meanwhile, the space between the front floor longitudinal beams on two sides can be enlarged, and when a battery pack is arranged between the front floor longitudinal beams on two sides, the battery pack capacity is enlarged, so that the whole vehicle cruising ability is improved. The torsion box and the longitudinal beam inner reinforcing plate are connected at the corner position of the front engine room longitudinal beam, the corner position of the front engine room longitudinal beam can be locally reinforced by utilizing the peripheral structure, and the front engine room longitudinal beam corner position can be prevented from being deformed due to forced bending.

And secondly, a threshold longitudinal beam connecting plate is arranged between the front floor longitudinal beam and the threshold beam, a transverse force transmission channel can be additionally arranged between the main longitudinal force transmission channel and the auxiliary longitudinal force transmission channel, and the dispersing effect of collision force can be improved. The threshold longitudinal beam connecting plate is connected with the seat cross beam, so that the collision force transmission effect between the seat cross beam and the threshold beam can be improved. The middle floor cross beam is arranged between the front ends of the rear floor longitudinal beams at the two sides, so that the rigidity of the front ends of the rear floor longitudinal beams can be increased, and the transmission of collision force between the main longitudinal force transmission channels at the two sides is facilitated.

In addition, a rear floor front cross beam is arranged between the rear floor longitudinal beams on two sides, and the rear floor front cross beam is connected with a rear connecting plate of the threshold longitudinal beam to form a second transverse force transmission channel, so that the transverse force transmission channel can be increased between the main longitudinal force transmission channel and the auxiliary longitudinal force transmission channel on two sides of the rear part of the automobile body, and the transmission dispersion effect of collision force can be further increased. Through the arrangement of the middle cross beam of the rear floor and the rear cross beam of the rear floor, the rigidity of the rear part of the vehicle body can be increased, and the transmission of collision force between the main longitudinal force transmission channels at two sides is facilitated. The middle front beam connecting beam is connected between the rear floor front beam and the rear floor middle beam, and the middle rear beam connecting beam is connected between the rear floor middle beam and the rear floor rear beam, so that the rigidity of the rear part of the vehicle body can be better increased, and the transmission and dispersion of collision force at the rear part of the vehicle body are facilitated.

Another object of the utility model is to propose a vehicle in which a lower body force transmission structure as described above is provided.

The vehicle has the same beneficial effects as the lower vehicle body force transmission structure, and the description is omitted here.

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 lower body force transfer structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1 (with the vehicle body floor removed);

Fig. 3 is a schematic view of an camber arrangement of a front section of a longitudinal beam and a rear section of the longitudinal beam according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a crash force transmission of a lower body force transfer structure according to an embodiment of the present utility model;

reference numerals illustrate:

1. Front cabin longitudinal beam, 2, front floor longitudinal beam, 3, rear floor longitudinal beam, 4, threshold beam, 5, torsion box, 6, threshold longitudinal beam rear connecting plate, 7, front lower reinforcement beam, 8, longitudinal beam inner reinforcement plate, 9, front floor, 10, middle floor, 11, rear floor, 12, middle floor cross beam, 13, rear floor front cross beam, 14, rear floor middle cross beam, 15, rear floor rear cross beam, 16, middle channel, 17, threshold longitudinal beam connecting plate, 18, seat cross beam, 19, middle front cross beam connecting beam, 20, rear floor upper cross beam, 21, middle rear cross beam connecting beam;

101. 102, a longitudinal beam front section and a longitudinal beam rear section;

alpha, the camber angle of the front section of the longitudinal beam, beta, the camber angle of the rear section of the longitudinal beam, G and a corner.

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 present embodiment relates to a lower body force transmission structure, and, as shown in fig. 1 and 2, the lower body force transmission structure includes main longitudinal force transmission passages separately provided on left and right sides, and sub longitudinal force transmission passages located on sides of the main longitudinal force transmission passages near the outside of the vehicle in the left and right directions of the whole vehicle, and at the same time, the lower body force transmission structure of the present embodiment further includes a first transverse force transmission passage.

The main longitudinal force transmission channels at each side comprise a front cabin longitudinal beam 1, a front floor longitudinal beam 2 and a rear floor longitudinal beam 3 which are connected end to end in sequence. The secondary longitudinal force transfer channels on each side comprise a torsion box 5 connected to the ipsilateral front cabin rail 1, a threshold rail rear connecting plate 6 connected to the ipsilateral rear floor rail 3, and a threshold rail 4 connected between the torsion box 5 and the threshold rail rear connecting plate 6.

The first transverse force transmission channel comprises a front lower reinforcement beam 7 above the front cabin longitudinal beams 1 on two sides, the left and right ends of the front lower reinforcement beam 7 are respectively connected with the torsion boxes 5 on two sides, and the inner sides of the front cabin longitudinal beams 1 on each side are respectively provided with a longitudinal beam inner reinforcement plate 8 connected with the front lower reinforcement beam 7.

At this time, as set up above, through the main longitudinal force transmission passageway that front cabin longeron 1, front floor longeron 2 and back floor longeron 3 connect formation, the vice longitudinal force transmission passageway that torsion box 5, threshold roof beam 4 and threshold longeron back connecting plate 6 connect formation, and the setting of the first horizontal force transmission passageway that the stiffening beam 7 formed under the front wall, this embodiment alright form a plurality of force transmission passageway that interweaves transversely, longitudinally in the automobile body down, thereby can increase automobile body collision force transmission route down, in order to reach the purpose that improves collision force transmission dispersion effect.

Based on the above general description, it should be noted that, specifically, the main longitudinal force transmission channel and the auxiliary longitudinal force transmission channel described above, the so-called "longitudinal" direction, that is, the front-rear direction of the whole vehicle, correspond to the "transverse" direction in the first transverse force transmission channel described above, that is, the left-right direction of the whole vehicle.

Further, in the lower vehicle body structure of the present embodiment, each side front cabin rail 1 has a rail front section 101 and a rail rear section 102 connected, and the rear end of the rail rear section 102 is connected to the front floor rail 2. Further, the above-described side member rear section 102, front floor side member 2, and rear floor side member 3 are all located below the vehicle body floor, and as also shown in fig. 1, the vehicle body floor may include, for example, a front floor 9, a middle floor 10, and a rear floor 11 arranged in this order from front to rear, while the side member rear section 102 and front floor side member 2 are located below the front floor 9, and the rear floor side member 3 is located below the middle floor 10 and the rear floor 11.

In addition, the under-dash reinforcement 7 is specifically located at the bottom of the dash panel in the vehicle body, so as to serve as a transverse (i.e., left-right direction of the whole vehicle) reinforcement structure of the bottom of the dash panel in the vehicle body, and the left and right ends of the under-dash reinforcement 7 are connected to the side torsion boxes 5, which are also typically connected to the a-pillars on the left and right sides in the vehicle body, while the middle position of the under-dash cross member 7 is typically connected to the front end of the middle tunnel 16 in the vehicle body, and the rear end of the middle tunnel 16 is connectable to the seat cross member 18.

In the present embodiment, the side front cabin stringers 1 each have the stringer front section 101 and the stringer rear section 102, and as a preferred embodiment, as shown in fig. 3, the both side stringer front sections 101 are inclined to the vehicle exterior side in the vehicle left-right direction as viewed in the vehicle up-down direction. In this way, the front side member segment 101 of the front cabin side member 1 is arranged in an outward tilting manner, so that the contact area between the barrier and the vehicle body in the small overlap collision can be enlarged, thereby contributing to the improvement of the small overlap collision safety.

Furthermore, in addition to the camber arrangement of the side rail front sections 101, as a further preferred embodiment, as shown in fig. 3, the present embodiment also makes it possible to tilt both side rail rear sections 102 to the vehicle exterior side in the vehicle left-right direction as viewed from the vehicle up-down direction, and on the basis of this, make each side front cabin side rail 1 form a corner G at the position where the side rail front sections 101 are connected to the side rail rear sections 102.

In this way, by making the side member rear section 102 in the front cabin side member 1 also camber-set, it is not only helpful to guide the transmission of the collision force of the front cabin side member 1 to the front floor side member 2 and the rocker beam 4, but it is also possible to obviously enlarge the space between the front floor side members 2 on both sides, whereby it is possible to enlarge the capacity of the battery pack when the vehicle type of the lower vehicle body structure of the present embodiment is applied is provided with the battery pack, and the battery pack is arranged between the front floor side members 2 on both sides, so as to facilitate an increase in the entire vehicle cruising ability.

In this embodiment, as further shown in fig. 3, the camber angle α of each side rail front section 101 may be set between 6 ° and 10 °, for example, and may be 6 °,7 °, 7.5 °,8 °,9 °, or 10 °. The camber angle β of the rear side rail section 102 can then be set, for example, between 22 ° and 26 °, and in particular 22 °, 23 °, 24 °, 24.5 °, 25 ° or 26 °.

With continued reference to fig. 3, this embodiment is a preferred embodiment in which the side torque box 5 and the inner rail reinforcement panel 8 are also connected to the same side front cabin rail 1 at the corner G. In this way, by connecting the torsion box 5 and the in-side member reinforcement plate 8 to the corner G of the front cabin side member 1, the corner G of the front cabin side member 1 can be locally reinforced by the peripheral structure, and the corner G of the front cabin side member 1 can be prevented from being deformed by being subjected to bending.

It should be noted that, in this embodiment, the bottom of the front lower reinforcement beam 7 may overlap the top of the front cabin stringers 1 on both sides, and may be connected to the front cabin stringers on both sides. In addition, the above-mentioned longeron reinforcing plate 8 adopts stamping forming's sheet metal component, and after being connected with front cabin longeron 1 and front wall lower stiffening beam 7, it is preferred also to make the cavity structure of formation between longeron inner stiffening plate 7, front cabin longeron 1 and the front wall lower stiffening beam 7 three to increase the strengthening effect of longeron inner stiffening plate 7.

As a preferred embodiment, as also shown in fig. 1 to 3, the present embodiment connects a rocker web 17 between each side front floor rail 2 and the same side rocker 4. Thus, by providing the rocker web 17 between the front floor rocker 2 and the rocker 4, it will be appreciated that it is possible to add a transverse force transfer channel between the primary and secondary longitudinal force transfer channels, thereby contributing to an improved impact force dispersion.

Based on the arrangement of the side sill beam connecting plates 17, in the implementation, it is preferable that the present embodiment further enables the two side sill beam connecting plates 17 to be connected with the seat cross member 18 on the front floor 9 in the up-down direction of the whole vehicle. In this case, the above-mentioned rocker web 17 and seat cross member 18 are joined together, i.e. their projections in the up-down direction of the entire vehicle overlap at least partially, and, in addition to the projection overlap, the rocker web 17 and seat cross member 18 can also be joined together by means of multi-layer welding via the front floor 9 located between them.

It will be appreciated that this embodiment can increase the rigidity of the connection between the seat cross member 18 and the rocker beam 4 by providing the rocker beam connecting plate 17 between each side rocker beam 4 and the front floor side member 2 and engaging it with the seat cross member 18, contributing to an increase in the impact force transmitting effect therebetween.

In the present embodiment, as a preferred embodiment, the rocker arm connecting plates 17 on each side may be provided in a plurality of numbers arranged at intervals in the front-rear direction of the entire vehicle, for example. Furthermore, it should be noted that, as still shown in fig. 2, in the lower vehicle body of the present embodiment, the seat cross members 18 may be generally disposed in two front-rear spaced arrangement, so as to facilitate the installation of the front seats of the vehicle, and correspondingly, the side sill beam connecting plates 17 disposed at intervals on each side may also be disposed in one-to-one correspondence with the seat cross members 18, so as to enhance the connection rigidity between the sill beam 4 and the seat cross members 18.

As a preferred embodiment, which is also shown in fig. 1 and 2, a middle floor cross member 12 is connected between the front ends of the rear floor stringers 3 on both sides. The middle floor cross member 12 is located below the middle floor 10, and by providing the middle floor cross member 12 between the front ends of the rear floor stringers 3 on both sides, it is understood that it can increase the rigidity of the front end positions of the rear floor stringers 3 on both sides, while also facilitating the transfer of collision forces between the main longitudinal force transfer channels on both sides.

In addition to the above-described middle floor cross member 12, in this embodiment, as a preferred embodiment, a rear floor front cross member 13 is also connected between the two side rear floor stringers 3, and at the same time, as shown in fig. 2, the rear floor front cross member 13 is also connected with the two side sill stringer rear connecting plates 6 in the left-right direction of the whole vehicle, and forms a second transverse force transmission passage.

In this case, the "transverse" direction in the second transverse force transmission channel is also the left-right direction of the whole vehicle. The rear floor front cross member 13 and the rear connecting plates 6 of the side sill longitudinal beams are connected, that is, the projections of the rear floor front cross member 13 and the rear connecting plates 6 of the side sill longitudinal beams in the left-right direction of the whole vehicle are at least partially overlapped, and besides the projection overlap, the rear floor front cross member 13 and the rear connecting plates 6 of the side sill longitudinal beams are also indirectly connected together through the rear floor longitudinal beam 3.

Meanwhile, by arranging the rear floor front cross beam 12 between the rear floor stringers 3 on the two sides and connecting the rear floor front cross beam with the rear connecting plates 6 of the threshold stringers on the two sides to form a second transverse force transmission channel, it is obvious that the transverse force transmission channel can be increased between the main longitudinal force transmission channel and the auxiliary longitudinal force transmission channel on the two sides of the rear part of the vehicle body, and the transmission dispersion effect of collision force can be further increased.

In the present embodiment, as a preferred embodiment, a rear floor center cross member 14 and a rear floor rear cross member 15 are further connected between the rear floor stringers 3 on both sides. The rear floor rear cross beam 15 is connected between the rear ends of the rear floor longitudinal beams 3 on both sides, and the rear floor middle cross beam 14 is positioned between the rear floor front cross beam 13 and the rear floor rear cross beam 15. Furthermore, the present embodiment may further connect a center front cross member connecting beam 19 extending in the front-rear direction of the vehicle between the rear floor front cross member 13 and the rear floor center cross member 14, and a center rear cross member connecting beam 21 extending in the front-rear direction of the vehicle between the rear floor center cross member 14 and the rear floor rear cross member 15, on the basis of the provision of the rear floor center cross member 14 and the rear floor rear cross member 15.

In a specific implementation, the two middle-front beam connecting beams 19 may be two, for example, arranged side by side, and the two middle-front beam connecting beams 19 are also arranged in a cross shape with the rear floor upper beam 20 above the rear floor 11. The above-described center rear cross member connection beam 21 may be provided as one, for example, and the center rear cross member connection beam 21 may preferably be arranged corresponding to the middle position of the both-side center front cross member connection beam 19.

It will be appreciated that by the arrangement of the rear floor center cross member 13 and the rear floor rear cross member 14 described above, the present embodiment can increase the rigidity of the rear portion of the vehicle body and facilitate the transmission of collision force between the main longitudinal force transmission passages on both sides. The rigidity of the rear part of the vehicle body can be better increased by connecting the middle front beam connecting beam 19 between the rear floor front beam 13 and the rear floor middle beam 14 and connecting the middle rear beam connecting beam 21 between the rear floor middle beam 14 and the rear floor rear beam 15, and the transmission and dispersion of collision force at the rear part of the vehicle body are also facilitated, so that the safety of the rear collision of the vehicle is improved.

In this embodiment, it should be noted that, in implementation, the beam structures and the connection plate structures may be sheet metal parts formed by conventional stamping, and the beam structures and the connection plate structures may be connected by welding. Meanwhile, for the arrangement thereof in the vehicle body, such as the front cabin side member 1, the rear floor side member 3, the rocker beam 4, the torsion box 5, and the seat cross member 8 and the cross members located between the rear floor side members 3 on both sides, reference may also be made to the related structures in the existing vehicle body.

According to the lower vehicle body force transmission structure, the design is adopted, the main longitudinal force transmission channels formed by connecting the front cabin longitudinal beam 1, the front floor longitudinal beam 2 and the rear floor longitudinal beam 3 are adopted, the torsion box 5, the threshold beam 4 and the threshold longitudinal beam connecting plate 6 are connected to form the auxiliary longitudinal force transmission channels, and the front transverse force transmission channels and the rear transverse force transmission channels formed by the front surrounding lower reinforcement beam 7 and the rear floor front cross beam 13 are arranged, so that a plurality of transversely and longitudinally interweaved force transmission channels are formed in the lower vehicle body of the embodiment, a lower vehicle body collision force transmission path can be increased, the collision force transmission dispersion effect can be improved, and the safety of the whole vehicle collision is improved.

In addition, as shown in fig. 4, in the lower body force transmission structure of the present embodiment, during a vehicle collision, for a vehicle frontal collision condition, collision force can be transmitted to the rear floor longitudinal beam 6 in the rear direction along the main and auxiliary longitudinal force transmission channels respectively through the front cabin longitudinal beam 1, and simultaneously, in the longitudinal transmission process, the transmission of the collision force can also be performed transversely through the first and second transverse force transmission channels, the middle floor cross beam 12, the front, middle and rear floor cross beams, and the like, so that the transmission dispersion of the frontal collision force can be realized, and the safety of the vehicle frontal collision can be ensured.

For the vehicle rear collision, the collision force can be transmitted to the front cabin longitudinal beam 1 in front along the main longitudinal force transmission channel and the auxiliary longitudinal force transmission channel respectively through the rear floor longitudinal beam 3, and can be transversely transmitted through the second transverse force transmission channel, the first transverse force transmission channel, the rear floor front beam, the middle floor beam, the rear floor beam 12 and the like in the longitudinal transmission process, so that the transmission dispersion of the front collision force is realized, and the safety of the vehicle rear collision is ensured.

For the side collision working condition of the vehicle, the side collision force can be transmitted to the main longitudinal force transmission channels on the same side through the torsion box 5, the threshold longitudinal beam connecting plate 17 and the threshold longitudinal beam rear connecting plate 6, and then can be further transmitted to the main longitudinal force transmission channels on the other side through the seat cross beam 18, the middle floor cross beam 12 and the front, middle and rear cross beams on the rear floor, so that the transmission and dispersion of the side collision force can be realized, and the side collision safety of the vehicle can be ensured.

Example two

The present embodiment relates to a vehicle in which the lower body force transmitting structure of the first embodiment is provided.

The vehicle of this embodiment can form a plurality of transmission channels of horizontal and vertical interweaving in the lower vehicle body through setting up the lower vehicle body power transmission structure in embodiment one, can increase lower vehicle body collision power transmission route, improves collision power transmission dispersion effect to be favorable to promoting the collision security of whole car.

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. A lower body force transfer structure, characterized by:

the device comprises main longitudinal force transmission channels which are respectively arranged at the left side and the right side, auxiliary longitudinal force transmission channels which are positioned at the sides of the main longitudinal force transmission channels and are close to one side outside the vehicle along the left-right direction of the whole vehicle, and a first transverse force transmission channel;

Each side of the main longitudinal force transmission channel comprises a front cabin longitudinal beam (1), a front floor longitudinal beam (2) and a rear floor longitudinal beam (3) which are connected end to end in sequence;

Each side of the auxiliary longitudinal force transmission channel comprises a torsion box (5) connected with the front cabin longitudinal beam (1) on the same side, a threshold longitudinal beam rear connecting plate (6) connected with the rear floor longitudinal beam (3) on the same side, and a threshold beam (4) connected between the torsion box (5) and the threshold longitudinal beam rear connecting plate (6);

The first transverse force transmission channel comprises a front lower reinforcement beam (7) which is arranged on two sides and above the front cabin longitudinal beam (1), the left end and the right end of the front lower reinforcement beam (7) are respectively connected with the two sides of the torsion box (5), and longitudinal beam inner reinforcement plates (8) which are connected with the front lower reinforcement beam (7) are arranged on the inner sides of the front cabin longitudinal beam (1) on each side.

2. The underbody force transmitting structure according to claim 1, wherein:

Each side front cabin longitudinal beam (1) is provided with a longitudinal beam front section (101) and a longitudinal beam rear section (102) which are connected, and the longitudinal beam front sections (101) on both sides incline to one side outside the vehicle in the left-right direction of the vehicle when seen from the up-down direction of the vehicle.

3. The underbody force transmitting structure according to claim 2, wherein:

Seen from the up-down direction of the whole vehicle, the rear sections (102) of the longitudinal beams on two sides incline to one side outside the vehicle in the left-right direction of the whole vehicle, and the front cabin longitudinal beams (1) on each side form corners (G) at the positions where the front sections (101) of the longitudinal beams are connected with the rear sections (102) of the longitudinal beams.

4. A lower body force transmitting structure according to claim 3, characterized in that:

The camber angle of the front section (101) of the longitudinal beam on each side is between 6 DEG and 10 DEG, the camber angle of the rear section (102) of the longitudinal beam on each side is between 22 DEG and 26 DEG, and/or,

The torsion box (5) and the inner stringer stiffener (8) on each side are connected to the front cabin stringer (1) on the same side at the location of the corner (G).

5. The underbody force transmitting structure according to claim 1, wherein:

a threshold longitudinal beam connecting plate (17) is connected between the front floor longitudinal beam (2) on each side and the threshold beam (4) on the same side;

The two sides of the threshold longitudinal beam connecting plates (17) are connected with the seat cross beam (18) in the vertical direction of the whole vehicle, and/or the threshold longitudinal beam connecting plates (17) on each side are a plurality of the threshold longitudinal beam connecting plates which are arranged at intervals along the front-back direction of the whole vehicle.

6. The underbody force transmitting structure according to claim 1, wherein:

A middle floor cross beam (12) is connected between the front ends of the rear floor longitudinal beams (3) at two sides.

7. The lower body force transmitting structure according to any one of claims 1 to 6, characterized in that:

a rear floor front cross beam (13) is connected between the rear floor longitudinal beams (3) at two sides;

The rear floor front cross beam (13) and the threshold longitudinal beam rear connecting plates (6) on the two sides are connected in the left-right direction of the whole vehicle, and a second transverse force transmission channel is formed.

8. The underbody force transmitting structure as claimed in claim 7, wherein:

A rear floor middle cross beam (14) and a rear floor rear cross beam (15) are connected between the rear floor longitudinal beams (3) at two sides;

The rear floor rear cross beam (15) is connected between the rear ends of the rear floor longitudinal beams (3) on two sides, and the rear floor middle cross beam (14) is positioned between the rear floor front cross beam (13) and the rear floor rear cross beam (15).

9. The underbody force transmitting structure as claimed in claim 8, wherein:

A middle front beam connecting beam (19) extending along the front-rear direction of the whole car and/or a middle rear beam connecting beam (14) are connected between the rear floor front beam (13) and the rear floor middle beam,

A middle and rear beam connecting beam (21) extending along the front and rear directions of the whole vehicle is connected between the rear floor middle beam (14) and the rear floor rear beam (15).

10. A vehicle, characterized in that:

The vehicle is provided with the lower body force transmitting structure according to any one of claims 1 to 9.