CN223014738U - Longitudinal force transmission structure of vehicle body and vehicle - Google Patents
Longitudinal force transmission structure of vehicle body and vehicle Download PDFInfo
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- CN223014738U CN223014738U CN202422396527.2U CN202422396527U CN223014738U CN 223014738 U CN223014738 U CN 223014738U CN 202422396527 U CN202422396527 U CN 202422396527U CN 223014738 U CN223014738 U CN 223014738U
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Abstract
本实用新型提供了一种车身纵向传力结构及车辆，所述车身纵向传力结构包括前机舱纵梁，以及位于前地板底部的前地板下纵梁；前机舱纵梁包括首尾相连的纵梁前段与纵梁后段，前地板下纵梁的前端与纵梁后段的后端相连；纵梁后段一体成型在位于前围板下方的前围下部中，前围下部压铸成型，前围下部的前端连接前围板，前围下部的后端连接前地板。本实用新型所述的车身纵向传力结构，通过使前机舱纵梁中的纵梁后段集成在前围下部中，使得前机舱纵梁后部与周边车身部件形成一体结构，有助于在车辆碰撞时，避免前机舱纵梁后部与周边件之间发生连接位置开裂、脱开等问题，利于保证前机舱纵梁与周边车身部件之间的碰撞力传递效果，而可提升整车碰撞安全性。
The utility model provides a vehicle body longitudinal force transmission structure and a vehicle, the vehicle body longitudinal force transmission structure comprises a front cabin longitudinal beam, and a front floor lower longitudinal beam located at the bottom of the front floor; the front cabin longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section connected end to end, the front end of the front floor lower longitudinal beam is connected to the rear end of the longitudinal beam rear section; the longitudinal beam rear section is integrally formed in the lower part of the front enclosure located below the front enclosure, the lower part of the front enclosure is die-cast, the front end of the lower part of the front enclosure is connected to the front enclosure, and the rear end of the lower part of the front enclosure is connected to the front floor. The vehicle body longitudinal force transmission structure described in the utility model integrates the longitudinal beam rear section in the front cabin longitudinal beam into the lower part of the front enclosure, so that the rear part of the front cabin longitudinal beam and the surrounding body parts form an integrated structure, which helps to avoid the problems of cracking and detachment of the connection position between the rear part of the front cabin longitudinal beam and the surrounding parts when the vehicle collides, and is conducive to ensuring the collision force transmission effect between the front cabin longitudinal beam and the surrounding body parts, and can improve the collision safety of the whole vehicle.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a longitudinal force transmission structure of a vehicle body, and simultaneously relates to a vehicle with the longitudinal force transmission structure of the vehicle body.
Background
The crash force transmission structure of a vehicle is an important component of the safety performance of the vehicle and is designed to effectively disperse and absorb impact forces during a crash to protect the vehicle structure and occupants. In the prior art, a front cabin longitudinal beam and a front floor lower longitudinal beam are used as longitudinal force transmission components of a vehicle body, generally adopt independent sheet metal structures, are welded with peripheral parts to form a whole vehicle body structure, and are used as force transmission channels during vehicle collision. However, under the collision impact of the vehicle, the collision force transmission effect between the front cabin longitudinal beam and the peripheral vehicle body parts is easily limited due to the cracking, disconnection and other reasons of the connecting position, so that the improvement of the collision safety of the whole vehicle is not facilitated.
Disclosure of utility model
In view of the above, the present utility model is directed to providing a method for improving the collision safety of a whole vehicle.
In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:
The longitudinal force transmission structure of the vehicle body comprises a front cabin longitudinal beam and a front floor lower longitudinal beam positioned at the bottom of a front floor, wherein the front cabin longitudinal beam comprises a longitudinal beam front section and a longitudinal beam rear section which are connected end to end, the front end of the front floor lower longitudinal beam is connected with the rear end of the longitudinal beam rear section, the longitudinal beam rear section is integrally formed in the lower part of a front wall positioned below a front wall plate, the lower part of the front wall plate is die-cast, the front end of the lower part of the front wall plate is connected with the front wall plate, and the rear end of the lower part of the front wall plate is connected with the front floor.
Furthermore, the rear end of the front section of the longitudinal beam is fixedly connected with the front end of the rear section of the longitudinal beam through a splicing structure, and/or the front section of the longitudinal beam is made of an extrusion profile or is formed by rolling steel sheet metal.
Further, a front floor upper longitudinal beam is arranged at the top of the front floor, the front end of the front floor upper longitudinal beam is connected with the lower part of the front wall, the front part of the front floor upper longitudinal beam and the rear section of the longitudinal beam are correspondingly arranged up and down, and the rear part of the front floor upper longitudinal beam and the front floor lower longitudinal beam are correspondingly arranged up and down.
Further, a front wall lower beam and a front wall lower plate are formed at the lower part of the front wall, the front wall lower plate is located below the front wall lower beam and comprises a middle channel connecting plate located in the middle and front wall lower plates respectively arranged at the left side and the right side of the middle channel connecting plate, and the rear section of the longitudinal beam is located at the bottom of the front wall lower plate.
Further, the lower part of the front wall is provided with a front section of a threshold beam inner plate connected with the lower plate of the front wall and a torsion box positioned at the bottom of the lower plate of the front wall, one side of the torsion box is connected with the rear section of the longitudinal beam, and the other side of the torsion box is connected with the front section of the threshold beam inner plate.
Further, the lower part of the front wall is formed with a connecting beam positioned at the bottom of the lower plate of the front wall plate, one end of the connecting beam is connected with the rear section of the longitudinal beam, and the other end of the connecting beam is connected with a connecting cross beam formed at the bottom of the middle channel connecting plate.
Further, the lower part of the front wall is provided with a diagonal support beam positioned at the bottom of the lower plate of the front wall plate, the diagonal support beam is connected between the rear section of the longitudinal beam and the connecting beam, and the rear section of the longitudinal beam, the connecting beam and the diagonal support beam are connected to form a triangular structure.
Further, one end of the connecting beam connected with the rear section of the longitudinal beam is connected with the torsion box in the left-right direction of the whole vehicle, and/or one end of the inclined supporting beam connected with the rear section of the longitudinal beam is connected with the torsion box in the left-right direction of the whole vehicle.
Furthermore, a plurality of front auxiliary frame mounting points are arranged in the connecting beam, and at least one front auxiliary frame mounting point is positioned at the connecting position between the inclined support beam and the connecting beam.
Compared with the prior art, the utility model has the following advantages:
According to the longitudinal force transmission structure of the vehicle body, the rear section of the longitudinal beam in the front cabin longitudinal beam is integrated in the lower part of the front wall, and the integrally formed lower part of the front wall can be utilized to enable the rear part of the front cabin longitudinal beam and the peripheral vehicle body component to form an integral structure, so that the problems of cracking, disengaging and the like of a connecting position between the rear part of the front cabin longitudinal beam and the peripheral vehicle body component can be avoided when a vehicle collides, the collision force transmission effect between the front cabin longitudinal beam and the peripheral vehicle body component can be ensured, and the whole vehicle collision safety can be improved.
The front section of the longitudinal beam is formed by extrusion section or steel sheet metal in a rolling mode, the preparation of the front section of the longitudinal beam can be facilitated, and the structural strength of the front section of the longitudinal beam and the energy absorption effect during collision are guaranteed. Through setting up the longeron on the floor before, the joint strength between the front floor and the front wall lower part can be increased, help when the vehicle collides, avoid bending, fracture in the hookup location between front wall lower part and the front floor, make the longeron on the floor before and longeron back end and front floor lower longeron correspond from top to bottom and arrange simultaneously, also can utilize the cooperation of many roof beam bodies, the combined action plays better structural reinforcement and collision biography power effect, help increasing the rigidity of automobile body, promote the collision security of vehicle.
Furthermore, enclose the lower part shaping before having preceding enclose the lower beam and dash board lower plate, can do benefit to and enclose lower part spare part quantity before reducing, be convenient for enclose the preparation of lower part structure before, help reducing automobile body manufacturing cost, also help promoting the overall structure intensity of enclosing the lower part position before simultaneously, help promoting the security when whole car collides. Through shaping threshold roof beam inner panel anterior segment and torsion box, the usable torsion box links up with threshold roof beam inner panel anterior segment, forms the biography power passageway between longeron back end and automobile body threshold roof beam, helps the collision force of front cabin longeron to the reliable transmission of threshold roof beam. Through setting up the tie-beam that links to each other with longeron back end to make both sides tie-beam link together through the tie-beam of well passageway connecting plate bottom, not only can increase the transverse rigidity of enclose lower part bottom before, help promoting whole car torsional rigidity, also can increase transverse force transmission passageway simultaneously, be favorable to the transmission dispersion of collision power.
In addition, through setting up oblique supporting beam, can further increase the rigidity of preceding enclose lower part bottom, can promote whole car torsional rigidity better, also can further increase the power transmission passageway simultaneously, be favorable to promoting the transmission ability of collision power. The connecting beam is connected with the rear section of the longitudinal beam, and the end, connected with the rear section of the longitudinal beam, of the inclined support beam is connected with the torsion box, so that the transverse rigidity of the bottom of the lower part of the front wall can be better increased, and the dispersed transmission of collision force among the front wall and the rear section of the longitudinal beam is facilitated. Through set up preceding sub vehicle frame mounting point in the tie-beam, the connection of preceding sub vehicle frame of can being convenient for preceding sub vehicle frame mounting point is located the hookup location between oblique supporting beam and the tie-beam, can increase the structural strength of preceding sub vehicle frame mounting point, guarantees the stability of preceding sub vehicle frame installation, also does benefit to simultaneously and comes from preceding sub vehicle frame's power to the transmission of automobile body biography power passageway.
Another object of the utility model is to provide a vehicle in which a longitudinal body force transmission structure as described above is provided.
According to the vehicle, the longitudinal force transmission structure of the vehicle body is beneficial to improving the collision safety of the vehicle.
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 longitudinal force transmission structure of a vehicle body according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a longitudinal force transmission structure of a vehicle body according to an embodiment of the present utility model at another view angle;
FIG. 3 is a schematic view of the lower front wall portion according to an embodiment of the present utility model;
FIG. 4 is a schematic view of the lower front wall portion according to the embodiment of the present utility model;
FIG. 5 is a schematic view of the lower front wall portion according to an embodiment of the present utility model;
Fig. 6 is a schematic view of a portion of the structure in fig. 5.
Reference numerals illustrate:
1. A front cabin rail; 2, a front floor, 3, a front floor lower longitudinal beam, 4, a front coaming, 5, a front coaming lower part, 6, a front floor upper longitudinal beam, 7, a threshold beam, 8, a middle channel;
101. Longitudinal beam front section 102, longitudinal beam rear section 1021, front part 1022, middle part 1023, rear part 1024, and insertion slot;
201. A seat front cross member;
501. Front lower beam, 502, front panel lower plate, 503, middle channel connecting plate, 5031, extension part, 504, threshold beam inner plate front section, 505, torsion box, 5051, beam body, 506, connecting beam, 507, connecting beam, 508, oblique supporting beam, 509, reinforcing rib, 510, front auxiliary frame mounting point;
A. Triangular structure.
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.
The embodiment relates to a longitudinal force transmission structure of a vehicle body, which solves the problems that the joint position of a front cabin longitudinal beam 1 and a front floor lower longitudinal beam 3 welded with peripheral parts is easy to crack, break off and the like in the prior art by optimizing the structure of the longitudinal force transmission structure of the vehicle body, thereby limiting the collision force transmission effect between the front cabin longitudinal beam 1 and the peripheral vehicle body parts
The vehicle body longitudinal force transmission structure comprises a front cabin longitudinal beam 1 and a front floor lower longitudinal beam 3 positioned at the bottom of a front floor 2. The front cabin longitudinal beam 1 comprises a longitudinal beam front section 101 and a longitudinal beam rear section 102 which are connected end to end, and the front end of the front floor under-longitudinal beam 3 is connected with the rear end of the longitudinal beam rear section 102. The longitudinal beam rear section 102 is integrally formed in a front wall lower portion 5 located below the front wall plate 4, the front wall lower portion 5 is die-cast and formed, the front end of the front wall lower portion 5 is connected with the front wall plate 4, and the rear end of the front wall lower portion 5 is connected with the front floor 2.
According to the longitudinal force transmission structure of the vehicle body, the longitudinal beam rear section 102 in the front cabin longitudinal beam 1 is integrated in the front periphery lower part 5, and the front periphery lower part 5 structure formed integrally can be utilized, so that the rear part of the front cabin longitudinal beam 1 and the peripheral vehicle body parts form an integral structure, the problems of cracking, disengaging and the like of the connecting position between the rear part of the front cabin longitudinal beam 1 and the peripheral vehicle body parts can be avoided when a vehicle collides, the collision force transmission effect between the front cabin longitudinal beam 1 and the peripheral vehicle body parts can be ensured, and the whole vehicle collision safety can be improved.
Based on the above general description, an exemplary structure of the vehicle body longitudinal force transmission structure described in this embodiment is shown in fig. 1 and 2. In view of the fact that the front cabin side member 1 and the front floor side member 3 are laterally symmetrical, the cowl lower portion 5 is also laterally symmetrical, and therefore, only one side thereof will be described as an example in the embodiment. In this embodiment, the distance between the two front floor side sills 3 is greater than the distance between the two front longitudinal beam sections 101, and in the up-down direction of the whole vehicle, the two rear longitudinal beam sections 102 are arranged in an "eight" shape, and in the front-rear direction of the whole vehicle, each rear longitudinal beam section 102 is arranged in the front-surrounding lower portion 5 along with the shape.
As shown in fig. 4 and 5, the trailing stringer 102 in the present embodiment includes a front portion 1021, a middle portion 1022, and a rear portion 1023 connected in this order, wherein the front portion 1021 constitutes the front end of the trailing stringer 102, and the rear portion 1023 constitutes the rear end of the trailing stringer 102. The front portion 1021 is located on the front side of the dash panel 4 and is provided extending forward in the front-rear direction of the whole vehicle, and the rear portion 1023 is located at the rear end of the front lower portion 5 and is provided extending rearward in the front-rear direction of the whole vehicle beyond the front lower portion 5. The middle portion 1022 is formed on the front lower portion 5, and has two first side walls extending in the front-rear direction of the whole vehicle, the two first side walls being disposed at intervals in the left-right direction of the whole vehicle, and the front ends of the first side walls being connected to the front portion 1021, and the rear ends of the first side walls being connected to the front ends of the rear portion 1023. The middle portion 1022 further includes a first connecting rib disposed between the two first side walls in a zigzag shape.
As a preferred connection, the rear end of the longitudinal beam front section 101 and the front end of the longitudinal beam rear section 102 are fixed by a plug-in connection. Therefore, the connection between the two can be facilitated, and meanwhile, the connection reliability between the two can be ensured. In particular implementation, as shown in fig. 4, the plugging structure includes a plugging portion provided at the rear end of the front section 101 of the side member and a plugging slot 1024 provided at the front portion 1021 of the rear section 102 of the side member, and the rear end of the front section 101 of the side member and the front end of the rear section 102 of the side member can be connected together by inserting the plugging portion into the plugging slot 1024.
In addition, a connector is provided between the male portion and the side wall of the male slot 1024 to connect the two together. Of course, the insertion groove 1024 may be provided at the rear end of the side member front section 101, and the insertion portion may be provided at the front portion 1021 of the side member rear section 102, and connection between the side member front section 101 and the side member rear section 102 may be achieved.
In specific implementation, the front section 101 of the longitudinal beam in this embodiment is made of an extrusion profile, or is formed by rolling a steel sheet metal. The longitudinal beam front section 101 is formed by extrusion section or steel sheet metal in a rolling mode, so that the longitudinal beam front section 101 can be conveniently manufactured, and the structural strength of the longitudinal beam front section 101 and the energy absorption effect during collision can be guaranteed.
As a preferred embodiment, as shown in fig. 1, the top of the front floor 2 is provided with a front floor upper side member 6, and the front end of the front floor upper side member 6 is connected to the front periphery lower portion 5. The front part of the front floor upper side member 6 is arranged vertically corresponding to the side member rear section 102, and the rear part of the front floor upper side member 6 is arranged vertically corresponding to the front floor lower side member 3. The front part of the front floor upper longitudinal beam 6 and the longitudinal beam rear section 102 are correspondingly arranged up and down, which means that the projections of the front floor upper longitudinal beam 6 and the longitudinal beam rear section in the up and down directions of the whole vehicle are at least partially overlapped. The arrangement of the rear part of the front floor upper side member 6 vertically corresponding to the front floor lower side member 3 means that the projections of the two in the vertical direction of the whole vehicle are at least partially overlapped.
In this embodiment, through setting up the longeron 6 on the front floor, the joint strength between the front floor 2 and the preceding enclose lower part 5 can be increased, help when the vehicle collides, avoid taking place to bend, fracture in the hookup location between preceding enclose lower part 5 and the front floor 2, make the longeron 6 on the front floor and longeron back end 102 and front floor lower longeron 3 correspond from top to bottom simultaneously and arrange, also can utilize the synergism of many roof beam bodies 5051, play better structure reinforcing and collision biography power effect, help increasing the rigidity of automobile body, promote the collision security of vehicle.
In addition, the front floor upper side member 6 extends to the seat front cross member 201 in the front-rear direction of the entire vehicle, and is connected to the seat front cross member 201. In this way, the collision force received by the upper longitudinal beam 6 of the front floor is transmitted to the front transverse beam 201 of the seat, and the collision force is continuously transmitted in a dispersed manner along the left-right direction of the whole vehicle through the front transverse beam 201 of the seat.
As a preferred embodiment, as shown in fig. 3 and 4, the cowl lower 5 in this example is formed with a cowl lower cross member 501, and a dash lower panel 502 located below the cowl lower cross member 501. The dash lower panel 502 includes a middle tunnel connecting panel 503 in the middle, and dash lower panels 502 disposed on the left and right sides of the middle tunnel connecting panel 503, and the rail rear section 102 is disposed at the bottom of the dash lower panel 502. Here, make preceding enclose lower part 5 shaping have preceding enclose lower beam 501 and dash board lower plate 502, can do benefit to the reduction and enclose lower part 5 spare part quantity before, the preparation of enclose lower part 5 structure before being convenient for helps reducing automobile body manufacturing cost, also helps promoting the overall structure intensity of preceding enclose lower part 5 positions simultaneously, helps promoting the security when whole car collides.
Structurally, the front lower cross member 501 is located at the top of the front lower portion 5 and is connected to the bottom of the dash panel 4, where the front lower cross member 501 is beneficial to guiding the collision force to extend along the left-right direction of the whole vehicle. The middle channel connecting plate 503 is provided so as to penetrate in the front-rear direction of the front lower portion 5, and is "n" shaped so as to fit the shape of the middle channel 8. In order to improve the connection strength between the middle passage connection plate 503 and the middle passage 8, an extension portion 5031 extending toward the middle passage 8 is provided at the rear end of the middle passage connection plate 503, and the extension portion 5031 can be inserted into the middle passage 8 and connected to the middle passage 8. And the extension 5031 and the middle channel 8 are connected together by a connector passing through both.
In addition, the width of the front end of the middle channel connecting plate 503 in the left-right direction of the whole vehicle is gradually increased along the direction pointing to the front lower cross beam 501, which is beneficial to improving the connection firmness between the middle channel connecting plate 503 and the front lower cross beam 501 and the stability of the middle channel connecting plate 503 in bearing force. In the present embodiment, the dash lower panel 502 is provided in a space defined between the intermediate tunnel connecting panel 503, the front lower cross member 501, the front end of the rocker beam 7, and the front floor panel 2, thereby connecting the four. In this embodiment, the lower front wall portion 5 is preferably formed by die casting an aluminum alloy or a magnesium alloy, so as to facilitate forming, have a better weight reduction effect, and facilitate lightweight design.
As a preferred embodiment, as shown in fig. 3 to 5, the cowl lower 5 is formed with a rocker inner panel front section 504 connected to a dash lower panel 502, and a torsion box 505 located at the bottom of the dash lower panel 502. One side of the torsion box 505 is connected to the trailing side rail section 102 and the other side of the torsion box 505 is connected to the leading rocker inner panel section 504. Here, by forming the rocker inner panel front section 504 and the torsion box 505, a force transmission passage is formed between the side member rear section 102 and the body rocker 7 by engagement of the torsion box 505 with the rocker inner panel front section 504, facilitating reliable transmission of the collision force of the front cabin side member 1 to the rocker 7.
The torsion box 505 in this embodiment includes two beam bodies 5051 extending in the left-right direction of the whole vehicle and arranged side by side in the front-rear direction of the whole vehicle, and each beam body 5051 has two second side walls arranged oppositely, and a second connecting rib connected between the two second side walls in a fold line shape. The torsion box 505 here also has an easy shaping and a good force transmission performance.
Specifically, the rocker inner panel front section 504 is located outside the dash panel lower panel 502, and the cross section of the rocker inner panel front section 504 in the vehicle left-right direction is "L" shaped so as to be able to support the rocker inner panel front end and connect with the rocker 7. The front section 504 of the threshold beam inner plate has the advantages of simple structure, convenient processing and forming and good use effect. In addition, the rocker inner panel front section 504 has a connecting portion at the front side of the rocker inner panel, which is connected to the front end of the rocker inner panel by a connecting member, thereby further improving the connection stability between the rocker 7 and the rocker inner panel front section 504.
As shown in fig. 5, as a preferred embodiment, the cowl lower 5 is formed with a connecting beam 506 at the bottom of the dash lower panel 502, one end of the connecting beam 506 is connected to the side rail rear section 102, and the other end of the connecting beam 506 is connected to a connecting cross member 507 formed at the bottom of the center tunnel connecting plate 503. Here through setting up the tie-beam 506 that links to each other with longeron back section 102 to make both sides tie-beam 506 link together through the tie-beam 507 of well passageway connecting plate 503 bottom, not only can increase the transverse rigidity of enclose lower part 5 bottom before, help promoting whole car torsional rigidity, also can increase the transverse force transmission passageway simultaneously, be favorable to the transmission dispersion of collision power.
In detail, the connecting beam 507 is provided inside the rear end of the middle passage connecting plate 503 and is located on the front side of the extension portion 5031. Here, the connection beam 506 is disposed along with the middle channel connection plate 503, and has two third sidewalls disposed opposite to each other in front and rear, and a third connection rib connected between the two third sidewalls in a fold line shape. In the front-rear direction of the entire vehicle, the connecting cross member 507 is disposed close to the rear beam 5051.
Still referring to fig. 5 and 6, the cowl lower 5 is formed with a diagonal support beam 508 at the bottom of the dash lower panel 502, the diagonal support beam 508 is connected between the rail rear section 102 and the connecting beam 506, and the rail rear section 102, the connecting beam 506, and the diagonal support beam 508 are connected to form a triangular structure a. Here, through setting up oblique supporting beam 508, can further increase the rigidity of preceding enclose lower part 5 bottom, can promote whole car torsional rigidity better, also can further increase the power transmission passageway simultaneously, be favorable to promoting the transmission ability of collision power.
It should be noted that the "triangle" includes a standard triangle composed of three straight sides, and a triangle-like shape in which at least one side is nonlinear, but has a triangular shape in its entire composition. In this embodiment, the triangle structure a is a triangle-like structure, and of course, when the portion of the rear section 102 of the longitudinal beam for enclosing the triangle structure a is configured in a ratio, the triangle can be a standard triangle. However, in general, in practice, it is preferable to use a triangle-like shape as shown in fig. 6.
The diagonal support beam 508 in this embodiment has two fourth side walls disposed opposite to each other, and a fourth connecting rib connected between the two fourth side walls in a zigzag shape. The diagonal support beam 508 is also easy to form and has high strength and force transfer stability.
As a preferred embodiment, the end of the connecting beam 506 connected to the trailing end 102 of the side member is connected to the torsion box 505 in the right-left direction of the whole vehicle. One end of the cross beam 508 connected to the rear end 102 of the side member is connected to the torsion box 505 in the right-left direction of the whole vehicle. The end of the connecting beam 506 connected with the rear section 102 of the longitudinal beam and the end of the inclined supporting beam 508 connected with the rear section 102 of the longitudinal beam are connected with the torsion box 505, so that the transverse rigidity of the bottom of the front wall lower part 5 can be better increased, and the dispersed transmission of collision force among the two can be facilitated.
The so-called joint arrangement, i.e., the projection of the connecting beam 506 at least partially overlaps between the end connected to the rear section of the front cabin longitudinal beam 1 and the torsion box 505 in the left-right direction of the entire vehicle. Specifically, the connection beam 506 and the front-disposed beam body 5051 are disposed at least partially overlapping with the projection of the connection end of the side member rear section 102 in the right-left direction of the entire vehicle. The projection of the connection ends of the inclined support beam 508 and the rear beam 5051 and the rear longitudinal beam section 102 in the left-right direction of the whole vehicle is at least partially overlapped. In addition, the above-mentioned each broken line shape connecting rib in this embodiment is not only favorable to the shaping, but also is favorable to improving structural strength simultaneously to increase the power transmission passageway of collision force.
To further enhance the performance of the longitudinal force transfer structure of the vehicle body, a front subframe mounting point 510 is provided within the connecting beam 506 as shown in fig. 4 and 6. The front subframe mounting points 510 are plural, and at least one front subframe mounting point 510 is located at a connection position between the diagonal support beam 508 and the connection beam 506. Here, through set up preceding sub vehicle frame mounting point 510 in tie-beam 506, the connection of preceding sub vehicle frame of can being convenient for preceding sub vehicle frame mounting point 510 is located the hookup location between oblique supporting beam 508 and the tie-beam 506, can increase the structural strength of preceding sub vehicle frame mounting point 510, guarantees the stability of preceding sub vehicle frame installation, also does benefit to simultaneously and comes from preceding sub vehicle frame's power to the transmission of automobile body biography power passageway.
In some embodiments, the front subframe mounting points 510 are two, with one front subframe mounting point 510 disposed in the middle of the connection beam 506 and the other front subframe mounting point 510 disposed at the connection location between the cross support beam 508 and the connection beam 506. In specific implementation, the front auxiliary frame mounting point 510 can be a threaded sleeve, a cross rib is designed on the periphery of the threaded sleeve, the center of the cross rib is the front auxiliary frame mounting point 510, and the stability of the front auxiliary frame mounting point 510 is improved through the design of the cross rib line. Of course, the structural form, position, number, etc. of the front subframe mounting points 510 can be adjusted according to the use requirements.
In the present embodiment, a plurality of reinforcing ribs 509 may be provided on the front lower portion 5, and the reinforcing ribs 509 may be selectively provided so as to extend in the front-rear direction of the vehicle, the left-right direction, or the like, depending on the arrangement position. For example, a plurality of ribs 509 may be provided on the inner side of the extension 5031, and a plurality of ribs 509 may be provided on the cowl lower cross member 501. The plurality of reinforcing ribs 509 are arranged on the basis of improving the structural strength, so that the dispersed transmission of the collision force can be guided, and the collision safety can be improved.
According to the longitudinal force transmission structure of the vehicle body, through optimizing the structural form of the front wall lower part 5, the longitudinal beam rear section 102 in the front cabin longitudinal beam 1 is integrated in the front wall lower part 5, so that the connection firmness and stability between all parts are improved, and the longitudinal force transmission structure has good safety even in collision. Meanwhile, the further arranged torsion box 505, the connecting beam 506, the inclined support beam 508 and the like are beneficial to improving the force transmission effect in the longitudinal direction of the vehicle body, thereby being beneficial to improving the collision safety of the whole vehicle.
The present embodiment also relates to a vehicle in which the vehicle body longitudinal force transmission structure as described above is provided.
According to the vehicle, the longitudinal force transmission structure of the vehicle body is beneficial to improving the collision safety of the vehicle.
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 longitudinal force transmission structure of a vehicle body, which is characterized in that:
Comprises a front cabin longitudinal beam (1) and a front floor side sill (3) positioned at the bottom of a front floor (2);
The front cabin longitudinal beam (1) comprises a longitudinal beam front section (101) and a longitudinal beam rear section (102) which are connected end to end, and the front end of the front floor lower longitudinal beam (3) is connected with the rear end of the longitudinal beam rear section (102);
The longitudinal beam rear section (102) is integrally formed in a front wall lower portion (5) located below a front wall plate (4), the front wall lower portion (5) is formed through die casting, the front end of the front wall lower portion (5) is connected with the front wall plate (4), and the rear end of the front wall lower portion (5) is connected with the front floor (2).
2. The vehicle longitudinal force transmission structure according to claim 1, wherein:
the rear end of the longitudinal beam front section (101) is fixedly connected with the front end of the longitudinal beam rear section (102) through a splicing structure, and/or,
The longitudinal beam front section (101) is made of an extrusion profile or is formed by rolling steel sheet metal.
3. The vehicle longitudinal force transmission structure according to claim 1, wherein:
The top of the front floor (2) is provided with a front floor upper longitudinal beam (6), and the front end of the front floor upper longitudinal beam (6) is connected with the front periphery lower part (5);
the front part of the front floor upper longitudinal beam (6) is arranged vertically corresponding to the rear section (102) of the longitudinal beam, and the rear part of the front floor upper longitudinal beam (6) is arranged vertically corresponding to the front floor lower longitudinal beam (3).
4. A vehicle longitudinal force transmission structure according to any one of claims 1 to 3, characterized in that:
The front wall lower part (5) is formed with a front wall lower cross beam (501) and a front wall lower plate (502) positioned below the front wall lower cross beam (501);
The front wall plate lower plate (502) comprises a middle channel connecting plate (503) positioned in the middle and front wall plate lower plates (502) which are respectively arranged at the left side and the right side of the middle channel connecting plate (503), and the rear longitudinal beam section (102) is positioned at the bottom of the front wall plate lower plates (502).
5. The longitudinal force transmission structure of a vehicle body according to claim 4, wherein:
the front wall lower part (5) is formed with a threshold beam inner plate front section (504) connected with the front wall lower plate (502) and a torsion box (505) positioned at the bottom of the front wall lower plate (502);
One side of the torsion box (505) is connected with the rear section (102) of the longitudinal beam, and the other side of the torsion box (505) is connected with the front section (504) of the inner plate of the threshold beam.
6. The vehicle longitudinal force transmission structure according to claim 5, wherein:
The front wall lower part (5) is formed with a connecting beam (506) positioned at the bottom of the front wall lower plate (502), one end of the connecting beam (506) is connected with the rear section (102) of the longitudinal beam, and the other end of the connecting beam (506) is connected with a connecting cross beam (507) formed at the bottom of the middle channel connecting plate (503).
7. The longitudinal force transmission structure of a vehicle body according to claim 6, wherein:
The front wall lower part (5) is provided with a diagonal support beam (508) positioned at the bottom of the front wall lower plate (502), the diagonal support beam (508) is connected between the longitudinal beam rear section (102) and the connecting beam (506), and the longitudinal beam rear section (102), the connecting beam (506) and the diagonal support beam (508) are connected to form a triangular structure (A).
8. The longitudinal force transmission structure of the vehicle body according to claim 7, wherein:
One end of the connecting beam (506) connected with the rear section (102) of the longitudinal beam is connected with the torsion box (505) in the left-right direction of the whole vehicle, and/or,
One end of the inclined support beam (508) connected with the rear section (102) of the longitudinal beam is connected with the torsion box (505) in the left-right direction of the whole vehicle.
9. The longitudinal force transmission structure of the vehicle body according to claim 8, wherein:
A front auxiliary frame mounting point (510) is arranged in the connecting beam (506);
The front subframe mounting points (510) are plural, and at least one of the front subframe mounting points (510) is located at a connection position between the cross support beam (508) and the connection beam (506).
10. A vehicle, characterized in that:
the vehicle is provided with the vehicle body longitudinal force transmission structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422396527.2U CN223014738U (en) | 2024-09-30 | 2024-09-30 | Longitudinal force transmission structure of vehicle body and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422396527.2U CN223014738U (en) | 2024-09-30 | 2024-09-30 | Longitudinal force transmission structure of vehicle body and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN223014738U true CN223014738U (en) | 2025-06-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422396527.2U Active CN223014738U (en) | 2024-09-30 | 2024-09-30 | Longitudinal force transmission structure of vehicle body and vehicle |
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| Country | Link |
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| CN (1) | CN223014738U (en) |
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