Front wall lower structure and vehicle provided with same

Abstract

The utility model provides a front wall lower portion structure and a vehicle provided with the front wall lower portion structure, and the front wall lower portion structure comprises an integrally-formed structure body. A middle structure located in the middle and side structures arranged on the left side and the right side of the middle structure are formed on the structure body. The middle structure comprises a front wall lower cross beam and a front wall plate lower plate located below the front wall lower cross beam, and each of the two side part structures comprises a doorsill beam inner plate front section and a column A inner plate. According to the front wall lower portion structure, the number of parts of the front wall lower portion can be reduced, the front wall lower portion structure can be manufactured conveniently, the manufacturing cost of a vehicle body can be reduced, meanwhile, the safety of the whole vehicle during collision can be improved, and therefore the quality of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, in particular to a lower front panel structure, and at the same time, the utility model also relates to a vehicle provided with the lower front panel structure. Background Art

[0002] As an important component structure in the vehicle body, the lower front panel structure undertakes functions such as vehicle component loading and protecting the safety of the front-row occupants. In the specific structure, it usually adopts a multi-sheet metal welding structure. However, using a multi-sheet metal welding structure for the lower front panel structure not only has many sheet metal parts, is heavy, inconvenient to manufacture, increases the vehicle body manufacturing cost, but also is not conducive to improving the structural strength of the lower front panel position, affecting the vehicle collision performance, and thus is not conducive to improving the overall vehicle quality. Summary of the Utility Model

[0003] In view of this, the utility model aims to provide a lower front panel structure to improve the vehicle collision performance and achieve the purpose of cost reduction.

[0004] To achieve the above object, the technical solution of the utility model is realized as follows:

[0005] A lower front panel structure includes an integrally formed structural body;

[0006] The structural body is formed with a middle structure located in the middle and side structures arranged on both the left and right sides of the middle structure;

[0007] The middle structure includes a lower front cross beam and a lower front panel located below the lower front cross beam. Both side structures include a front section of the inner sill beam and an inner A-pillar panel.

[0008] Further, the lower front panel includes a middle channel connecting plate located in the middle and lower front panels respectively arranged on the left and right sides of the middle channel connecting plate; torsion boxes and a rear section of the front engine compartment longitudinal beam are formed at the bottoms of both lower front panels. One side of each torsion box is connected to the front section of the inner sill beam on the same side, and the other side of each torsion box is connected to the rear section of the front engine compartment longitudinal beam on the same side.

[0009] Further, on the side of the lower front cross beam facing the rear of the vehicle, a first reinforcing rib extending along the left and right direction of the vehicle and a second reinforcing rib extending along the up and down direction of the vehicle are provided; the first reinforcing ribs are multiple and arranged at intervals along the up and down direction of the vehicle, and at least part of the first reinforcing ribs penetrate from one end of the lower front cross beam to the other end of the lower front cross beam; the second reinforcing ribs are multiple and arranged at intervals along the left and right direction of the vehicle, and each second reinforcing rib intersects with at least part of the first reinforcing ribs.

[0010] Further, third reinforcing ribs extending in the longitudinal direction of the vehicle body are provided on the upper parts of the front apron lower panels on both sides. The third reinforcing ribs are multiple and arranged at intervals in the lateral direction of the vehicle body, and at least part of the third reinforcing ribs are connected to the second reinforcing ribs in one-to-one correspondence; and / or, the center tunnel connecting plate bulges upward, and a fourth reinforcing rib extending in the longitudinal direction of the vehicle body is provided at the top of the center tunnel connecting plate. The front end of the fourth reinforcing rib extends to the front apron lower cross member and forms a support for the front apron lower cross member at least in the longitudinal direction of the vehicle body.

[0011] Further, fifth reinforcing ribs are provided on the front sides of the front apron lower panels on both sides facing the front of the vehicle. The fifth reinforcing ribs include an annular rib at the center and multiple radial ribs arranged in a radial pattern; and / or, a sixth reinforcing rib is connected between the torsion box and the rear section of the front engine compartment longitudinal beam on each side. The sixth reinforcing rib is located on the front side of the torsion box facing the front of the vehicle, and the sixth reinforcing ribs are multiple and arranged at intervals in the vertical direction of the vehicle body.

[0012] Further, connecting beams are formed at the bottoms of the front apron lower panels on both sides. One end of each connecting beam is connected to the rear section of the front engine compartment longitudinal beam on the same side, and the other end of each connecting beam is connected to a connecting cross beam located at the bottom of the center tunnel connecting plate; wherein, one end of each connecting beam connected to the rear section of the front engine compartment longitudinal beam is connected to the torsion box on the same side in the lateral direction of the vehicle body.

[0013] Further, diagonal support beams are connected between the rear sections of the front engine compartment longitudinal beams and the connecting beams on each side; the rear sections of the front engine compartment longitudinal beams, the connecting beams and the diagonal support beams on each side are connected to form a triangular structure, and one end of each diagonal support beam connected to the rear section of the front engine compartment longitudinal beam is connected to the torsion box on the same side in the lateral direction of the vehicle body.

[0014] Further, front subframe mounting points are provided in the connecting beams on both sides; there are multiple front subframe mounting points on each side, and at least one front subframe mounting point is located at the connection position between the diagonal support beam and the connecting beam, and / or, reinforcing rib lines are provided in the connecting beams, and part of the reinforcing rib lines are connected to the front subframe mounting points.

[0015] Further, a front apron connecting flange that bulges upward is formed at the top of the front apron lower cross member; and / or, the structural body is integrally die-cast from aluminum alloy or magnesium alloy.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The lower front panel structure of the present utility model integrally forms components such as the lower front cross beam, the lower front panel, the front section of the inner sill beam, and the inner A-pillar, which can reduce the number of components used in the lower front panel, facilitate weight reduction, and simplify the preparation of the lower front panel structure, contributing to the reduction of vehicle body manufacturing costs. At the same time, it is beneficial to enhance the overall structural strength of the lower front panel position and improve the safety of the vehicle during a collision, thereby enhancing the overall vehicle quality.

[0018] In addition, the lower front panel includes a middle channel connecting plate and left and right lower front panels, which are suitable for connecting with peripheral components such as the middle channel. By forming torsion boxes at the bottoms of the left and right lower front panels and the rear section of the front engine compartment longitudinal beam, the component integration degree of the structural body can be further improved, facilitating the preparation of the lower front panel structure and reducing the vehicle body manufacturing costs. The first reinforcing rib and the second reinforcing rib are intersectingly arranged at the lower front cross beam, which can ensure the structural strength of the lower front cross beam position. Moreover, the first reinforcing rib is horizontally arranged through, which can also endow the lower front cross beam with good lateral (i.e., the left-right direction of the vehicle) stiffness and improve the torsional stiffness of the vehicle body.

[0019] Secondly, a third reinforcing rib is arranged on the upper part of the lower front panel, which can increase the structural strength of the lower front panel position. A fourth reinforcing rib is arranged on the top of the middle channel connecting plate, and the front end of the fourth reinforcing rib can support the lower front cross beam, which can improve the structural stability of the lower front cross beam position during a frontal collision of the vehicle and enhance the ability of the lower front cross beam to resist deformation and prevent tipping, contributing to increasing the safety of the vehicle occupants during a frontal collision. By arranging the fifth reinforcing rib and the sixth reinforcing rib, the structural strength of the left and right sides of the lower front panel can be increased, contributing to increasing the safety of the vehicle during a small overlap collision.

[0020] Furthermore, by arranging a connecting beam connected to the rear section of the front engine compartment longitudinal beam, and connecting the two side connecting beams together through a connecting cross beam at the bottom of the middle channel connecting plate, and making the connection between the end of the connecting beam connected to the rear section of the front engine compartment longitudinal beam and the torsion box seamless, the lateral stiffness of the bottom of the lower front panel can be increased, contributing to improving the torsional stiffness of the vehicle body. By arranging an inclined support beam, the stiffness of the bottom of the lower front panel can be further increased, better improving the torsional stiffness of the vehicle body and enhancing the safety of the vehicle during a collision.

[0021] In addition, by providing front subframe mounting points within the connecting beam, the connection with the front subframe can be facilitated. Moreover, the front subframe mounting points are located at the connection position between the diagonal support beam and the connecting beam, and the reinforcing rib lines within the connecting beam are connected to the front subframe mounting points, all of which can increase the structural strength of the front subframe mounting points, ensure the stability of the front subframe installation, and also facilitate the transfer of forces from the front subframe to other positions. The provision of the flanging for connecting the front bulkhead can facilitate the connection with the front bulkhead. Die-casting using aluminum alloy or magnesium alloy is conducive to the forming of the structural body and can also reduce the weight of the structural body, which is beneficial to the lightweight design of the vehicle body.

[0022] Another object of the present invention is to provide a vehicle, in which the lower front structure as described above is provided in the vehicle body.

[0023] The vehicle of the present invention is provided with the above-mentioned lower front structure, which is conducive to realizing the weight reduction and cost reduction design of the whole vehicle, as well as improving the collision safety of the whole vehicle, making the whole vehicle have better market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0025] Figure 1 is a schematic diagram of the overall structure of the lower front structure according to an embodiment of the present invention;

[0026] Figure 2 is Figure 1 an enlarged view of part A in

[0027] Figures 3 to 6 is a schematic diagram of the lower front structure according to an embodiment of the present invention from other perspectives;

[0028] DESCRIPTION OF THE REFERENCE NUMERALS

[0029] 10, structural body;

[0030] 11, lower front cross member; 111, first reinforcing rib; 112, second reinforcing rib; 113, third reinforcing rib; 114, flanging for connecting the front bulkhead;

[0031] 12, lower front panel; 121, middle channel connecting plate; 1211, fourth reinforcing rib; 1212, connecting cross beam; 1213, rear side flanging of the middle channel; 122, lower front plate; 1221, fifth reinforcing rib; 12211, annular rib; 12212, radial rib; 123, sixth reinforcing rib; 124, steering gear through hole; 125, side plate; 126, seventh reinforcing rib; 127, eighth reinforcing rib;

[0032] 13. Torque box; 131. Beam body;

[0033] 14. Rear section of the front engine compartment longitudinal beam; 141. Lapping portion;

[0034] 15. Front section of the inner panel of the sill beam; 16. Inner panel of the A-pillar; 17. Connecting beam; 171. Front subframe mounting point; 172. Reinforcing rib line;

[0035] 18. Diagonal support beam. Specific implementation manner

[0036] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments may be combined with each other.

[0037] In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present application. However, those skilled in the art should clearly understand that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0038] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationships such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, if terms such as "first" and "second" appear, they are also only for descriptive purposes and should not be construed as indicating or implying relative importance.

[0039] Taking the vehicle where the lower front structure described in the present utility model is located as an example, the orientation terms such as "upper, lower, left, right, front, and rear" used in the embodiments are defined based on the up-down direction (also known as the height direction, or the vehicle body Z-direction), left-right direction (also known as the width direction, or the vehicle body Y-direction), and front-rear direction (also known as the length direction, or the vehicle body X-direction) of the vehicle. "Inner" and "outer" are defined based on the contours of the corresponding components. For example, "inner" and "outer" defined based on the vehicle contour, with the side closer to the middle of the vehicle being "inner" and the opposite being "outer".

[0040] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0041] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0042] Embodiment 1

[0043] This embodiment relates to a lower front panel structure, which can save manufacturing costs, achieve weight reduction design, and at the same time improve the collision safety of the lower front panel position.

[0044] In terms of the overall structure, as Figures 1 to 6 shown, the lower front panel structure of this embodiment includes a structurally integrated body 10. The structurally integrated body 10 is formed with a middle structure in the middle, and side structures are provided on both the left and right sides of the middle structure. And, the middle structure includes a lower front cross member 11, and below the lower front cross member 11, both side structures include a front section of the inner panel of the sill beam 15 and the inner panel of the A-pillar 16.

[0045] At this time, with the above settings, by integrally forming components such as the lower front cross member 11, the lower panel of the front panel 12, the front section of the inner panel of the sill beam 15, and the inner panel of the A-pillar 16, the number of components in the lower front panel can be reduced, which is convenient for the preparation of the lower front panel structure, helps to reduce the manufacturing cost of the vehicle body, and is also beneficial to improving the overall structural strength of the lower front panel position and enhancing the collision safety.

[0046] Based on the above overall introduction, specifically, the inner panel of the A-pillar 16 in this embodiment is specifically the lower section of the inner panel of the A-pillar 16. Of course, according to design requirements, the inner panel of the A-pillar 16 can also be the entire inner panel of the A-pillar 16. At the same time, in specific implementation, a steering gear through hole 124 for the installation and layout of the steering gear is also provided on the lower panel of the front panel 12, and for the relevant structural parts not mentioned in the lower front panel structure of this embodiment, the well-known vehicle body structures in the art can be referred to, and will not be elaborated here.

[0047] In this embodiment, as a preferred implementation form, as Figure 1 、 Figure 3 and Figure 4As shown, the lower front bulkhead 12 includes a middle channel connecting plate 121 in the middle, and lower front bulkhead plates 122 respectively arranged on the left and right sides of the middle channel connecting plate 121. Among them, torsion boxes 13 and the rear section of the front engine compartment longitudinal beam 14 are formed at the bottoms of the lower front bulkhead plates 122 on both sides. One side of each torsion box 13 is connected to the front section of the inner panel of the same-side sill beam 15, and the other side of each torsion box 13 is connected to the rear section of the front engine compartment longitudinal beam 14 of the same side.

[0048] The lower front bulkhead 12 includes the middle channel connecting plate 121 and the left and right lower front bulkhead plates 122, which can be adapted to realize the connection with peripheral components such as the middle channel. By forming the torsion boxes 13 and the rear section of the front engine compartment longitudinal beam 14 at the bottoms of the lower front bulkhead plates 122 on both sides, the component integration degree of the structural body 10 can be further improved, which is beneficial to the preparation of the lower front structure and the reduction of the body manufacturing cost.

[0049] Furthermore, in this embodiment, as a preferred implementation form, still as Figure 1 shown, on the side of the lower front crossmember 11 facing the rear of the vehicle, there is a first reinforcing rib 111 extending along the left and right direction of the whole vehicle, and a second reinforcing rib 112 extending along the up and down direction of the whole vehicle.

[0050] And, the first reinforcing ribs 111 are multiple and arranged at intervals along the up and down direction of the whole vehicle, and at least part of the first reinforcing ribs 111 penetrate from one end of the lower front crossmember 11 to the other end of the lower front crossmember 11. The second reinforcing ribs 112 are multiple and arranged at intervals along the left and right direction of the whole vehicle, and each second reinforcing rib 112 intersects with at least part of the first reinforcing ribs 111.

[0051] By arranging the intersecting first reinforcing ribs 111 and second reinforcing ribs 112 at the lower front crossmember 11, the structural strength at the position of the lower front crossmember 11 can be guaranteed. And the first reinforcing ribs 111 are transversely penetrated, which can also make the lower front crossmember 11 have better lateral (i.e., the left and right direction of the whole vehicle) stiffness and can improve the torsional stiffness of the body.

[0052] It is worth mentioning that the cross-section of the lower front crossmember 11 in this embodiment is designed in a U shape as a whole visually, so as to have better structural strength and facilitate the arrangement of the first reinforcing ribs 111 and the second reinforcing ribs 112. Secondly, the number and arrangement form of the first reinforcing ribs 111 and the second reinforcing ribs 112 can be set and adjusted accordingly according to the actual structural strengthening requirements of the lower front crossmember 11. For example, the first reinforcing ribs 111 are two or three arranged at intervals along the up and down direction of the whole vehicle, and each second reinforcing rib 112 and the first reinforcing rib 111 intersecting with it are designed in a "cross" shape, etc.

[0053] As a preferred implementation form, in this embodiment, third reinforcing ribs 113 extending in the front-rear direction of the whole vehicle are provided on the upper parts of the lower front wall panels 122 on both sides. The third reinforcing ribs 113 are multiple and arranged at intervals in the left-right direction of the whole vehicle, and at least part of the third reinforcing ribs 113 are connected to the second reinforcing ribs 112 in a one-to-one correspondence. The main advantage of such a setting is that it can increase the force transmission path and smoothness, and improve the structural strength of the position of the lower front wall panel 122.

[0054] During the specific implementation of this embodiment, the extension lengths of the third reinforcing ribs 113 can be set and adjusted according to the structural strength requirements of the corresponding lower front wall panels 122. And as a preferred implementation form, on the side where the middle structure faces the rear of the whole vehicle, the protruding dimensions of the third reinforcing ribs 113 compared with the corresponding lower front wall panels 122 are smaller than the protruding dimensions of the second reinforcing ribs 112 compared with the lower front cross beam 11, so as to facilitate the structural design with different structural strength requirements at different positions and the connection with the surrounding components at the lower front part position.

[0055] It should be noted that the steering gear through hole 124 of this embodiment is specifically arranged on the left lower front wall panel 122. At the front end of the rear section 14 of the front engine compartment longitudinal beam of this embodiment in the front-rear direction of the whole vehicle, a lapping part 141 for lapping and connecting with the flanging of the front engine compartment longitudinal beam is also provided to improve the assembly convenience of the front part structure of the vehicle body.

[0056] In addition, in this embodiment, as a preferred implementation form, referring again to Figure 1 As shown, the middle channel connecting plate 121 bulges upward, and a fourth reinforcing rib 1211 extending in the front-rear direction of the whole vehicle is provided at the top of the middle channel connecting plate 121. The front end of the fourth reinforcing rib 1211 extends to the lower front cross beam 11 and forms a support for the lower front cross beam 11 at least in the front-rear direction of the whole vehicle.

[0057] It can be understood that by setting the fourth reinforcing rib 1211 at the top of the middle channel connecting plate 121 and enabling the front end of the fourth reinforcing rib 1211 to form a support for the lower front cross beam 11, the structural stability of the position of the lower front cross beam 11 during the frontal collision of the whole vehicle can be improved, and the ability of the lower front cross beam 11 to resist deformation and prevent tipping can be enhanced, which helps to increase the safety of the vehicle occupants during the frontal collision.

[0058] Moreover, in the specific structure, the cross-section of the above-mentioned middle channel connecting plate 121 visually presents an inverted U shape as a whole, and the fourth reinforcing rib 1211 is arranged on the top surface of the middle channel connecting plate 121. As for the number and arrangement form of the fourth reinforcing rib 1211, they can be set and adjusted according to the actual structural strengthening requirements of the middle channel connecting plate 121. For example, it can be three or four arranged at intervals in the left-right direction of the whole vehicle, etc.

[0059] In addition, in this embodiment, as a preferred implementation form, in combination with Figure 3 and Figure 5 as shown, on one side of the lower front wall panels 122 facing the front of the vehicle, fifth reinforcing ribs 1221 are provided on both sides, and the fifth reinforcing ribs 1221 include an annular rib 12211 located at the center and a plurality of radial ribs 12212 arranged radially. The main advantage of such a setting is that an irregular-shaped rib covering a large area can be formed by the annular rib 12211 and the plurality of radial ribs 12212, enriching the force transmission path, and thus better improving the structural strength and collision safety of the left and right positions at the lower part of the front wall.

[0060] Meanwhile, in this embodiment, also as a preferred implementation form, a sixth reinforcing rib 123 is connected between each side torsion box 13 and the rear section of the front engine compartment longitudinal beam 14. The sixth reinforcing rib 123 is located on the side of the torsion box 13 facing the front of the vehicle, and the sixth reinforcing ribs 123 are multiple and arranged at intervals in the up-down direction of the whole vehicle. Thus, through the sixth reinforcing rib 123 in combination with the fifth reinforcing rib 1221, the force transmission path can be further enriched, and the structural strength of the left and right positions at the lower part of the front wall can be increased, which helps to increase the safety of the vehicle during a small overlap collision.

[0061] Of course, in this embodiment, the number and arrangement form of the fifth reinforcing rib 1221 and the sixth reinforcing rib 123 can also be set and adjusted according to the structural strength requirements of the lower part of the front wall. For example, the fifth reinforcing rib 1221 is four or five arranged in a staggered manner in sequence, and the sixth reinforcing rib 123 is three or four arranged at intervals in the up-down direction of the whole vehicle, etc.

[0062] In addition, in this embodiment, as a preferred implementation form, as Figure 4 shown, connecting beams 17 are formed at the bottoms of the lower front wall panels 122 on both sides. One end of each side connecting beam 17 is connected to the rear section of the front engine compartment longitudinal beam 14 on the same side, and the other end of each side connecting beam 17 is connected to a connecting cross beam 1212 located at the bottom of the middle channel connecting plate 121. Among them, at the end where each side connecting beam 17 is connected to the rear section of the front engine compartment longitudinal beam 14, it is arranged in connection with the torsion box 13 in the left-right direction of the whole vehicle.

[0063] Here, by providing the connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14, and making the two side connecting beams 17 connected together through the connecting cross beam 1212 at the bottom of the middle channel connecting plate 121, and making the end where the connecting beam 17 is connected to the rear section of the front engine compartment longitudinal beam 14 and the torsion box 13 arranged in connection, the lateral stiffness of the bottom of the lower part of the front wall can be increased, which helps to improve the torsional stiffness of the whole vehicle.

[0064] It should be noted that the so-called connection setting in this embodiment means that at least a part of the projection in the left-right direction of the vehicle body between the end of the connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14 and the torque box 13 overlaps, and combined with Figure 3 As shown, as a preferred implementation form, side plates 125 are respectively provided on the left and right sides of the lower front panel 12, and the front sections 15 of the inner side sill beams on each side are respectively arranged on the side facing the outside of the vehicle of the side plate 125 on the same side. At this time, each torque box 13 includes two beam bodies 131 arranged at intervals in the front-rear direction of the vehicle body. The two ends of each beam body 131 are respectively connected to the side plate 125 and the rear section of the front engine compartment longitudinal beam 14 on the same side as the torque box 13, and the torque box 13 is formed at the box-shaped structural area surrounded by the beam bodies 131, the side plates 125 and the rear section of the front engine compartment longitudinal beam 14.

[0065] Of course, each side torque box 13 can also be composed of only two beam bodies 131, that is, each beam body 131 itself is a torque box structure. And, to ensure that the torque box 13 has better force transmission and energy absorption effects, as a preferred implementation form, the above-mentioned beam bodies 131 all include two side walls arranged oppositely in the front-rear direction of the vehicle body, and structural elements such as support rib lines connected between the two side walls. Specifically, the support rib lines can be composed of multiple reinforcing ribs connected end to end and arranged obliquely to form multiple triangular structures in the beam body 131, so as to obtain better structural strengthening effects and the force transmission and energy absorption effects of the torque box 13.

[0066] At the same time, in this embodiment, the inner A-pillar 16 is also specifically connected to the side plate 125 on the side facing the outside of the vehicle (in the left-right direction of the vehicle body). Furthermore, still as Figure 4 shown, the above-mentioned connecting cross beam 1212 and the two connecting beams 17 are in an inverted "U" shape in the overall visual sense to enhance the stiffness of the structural body 10 in the front-rear direction and the left-right direction of the vehicle body.

[0067] In this embodiment, as a preferred implementation form, an inclined support beam 18 is connected between the rear section 14 of each side front engine compartment longitudinal beam and the connecting beam 17. The rear section 14 of each side front engine compartment longitudinal beam, the connecting beam 17 and the inclined support beam 18 are all connected to form a triangular structure, and the end of each side inclined support beam 18 connected to the rear section of the front engine compartment longitudinal beam is arranged in connection with the torque box 13 on the same side in the left-right direction of the vehicle body.

[0068] The main advantage of such a setting is that by setting the inclined support beam 18, the stiffness of the bottom of the lower part of the front panel can be further increased, which can better improve the torsional stiffness of the vehicle body and enhance the safety of the vehicle during a collision. Of course, the specific shape of the above-mentioned triangular structure can be a standard triangle, or can be similar to a triangle as shown in Figure 4

[0069] In addition, in this embodiment, as a preferred implementation form, continue to refer to Figure 4 As shown, front subframe mounting points 171 are provided in both of the connecting beams 17 on both sides. Specifically speaking, there are multiple front subframe mounting points 171 on each side, and at least one front subframe mounting point 171 is located at the connection position between the diagonal support beam 18 and the connecting beam 17. At the same time, reinforcing rib lines 172 are provided in the connecting beam 17, and some of the reinforcing rib lines 172 are connected to the front subframe mounting points 171.

[0070] It can be understood that by providing the front subframe mounting points 171 in the connecting beam 17, it is convenient to connect with the front subframe. And making the front subframe mounting points 171 located at the connection position between the diagonal support beam 18 and the connecting beam 17, and making the reinforcing rib lines 172 in the connecting beam 17 connected to the front subframe mounting points 171 can all increase the structural strength of the front subframe mounting points 171, ensure the stability of the front subframe installation, and at the same time facilitate the transfer of the force from the front subframe to other positions.

[0071] Of course, the number of the front subframe mounting points 171 in this embodiment can be set and arranged according to the installation requirements of the front subframe. For example, two front subframe mounting points 171 arranged at intervals are respectively provided in each connecting beam 17, etc. And when necessary, based on the structural strengthening requirements of the front subframe mounting points 171, only at least one front subframe mounting point 171 is located at the connection position between the diagonal support beam 18 and the connecting beam 17, or only the reinforcing rib lines 172 are provided in the connecting beam 17, etc.

[0072] And, in specific implementation, the connecting beam 17 may include two side walls arranged oppositely, and the reinforcing rib lines 172 include multiple reinforcing ribs connected between the two side walls. Some of the reinforcing ribs are radially arranged around the front subframe mounting points 171, and the other part forms multiple triangular structures with the two side walls. In this way, the force transmission path of the connecting beam 17 can be enriched and the collision effect can be improved.

[0073] At the same time, for the specific structures of components such as the rear section 14 of the front engine compartment longitudinal beam, the connecting cross beam 1212, and the diagonal support beam 18 in this embodiment, the structural design of the above-mentioned beam body 131 can be preferably referred to in order to achieve better structural strengthening effects and collision energy absorption effects. For example, the rear section 14 of the front engine compartment longitudinal beam includes two side walls arranged at intervals in the left-right direction of the vehicle, and support rib lines connected between the two side walls, etc.

[0074] And, in this embodiment, as a preferred implementation form, as Figure 6As shown, a front panel connecting flange 114 that protrudes upward is formed at the top of the front lower cross member 11 to facilitate connection with the front panel. In a specific structure, each of the side panels 125 is connected to the front panel connecting flange 114 to facilitate the overall preparation of the structural body 10.

[0075] In addition, as a preferred implementation form, the structural body 10 of this embodiment is integrally die-cast from aluminum alloy or magnesium alloy, which is beneficial to the forming of the structural body 10 and can also reduce the weight of the structural body 10, facilitating the lightweight design of the vehicle body.

[0076] It is still worth mentioning that, in this embodiment, in combination Figure 4 As shown, a plurality of seventh reinforcing ribs 126 arranged at intervals in the longitudinal direction of the vehicle are provided at the bottom of the middle channel connecting plate 121. Both ends of some of the seventh reinforcing ribs 126 are respectively connected to the rear sections of the front engine compartment longitudinal beams 14 on both sides or the connecting beams 17 on both sides, and some of the seventh reinforcing ribs 126 are connected between the middle channel connecting plate 121 and any one of the front lower panels 122, in order to improve the overall structural strength of the front lower panel 12.

[0077] And, a rear side flange 1213 of the middle channel connecting plate 121 is provided at the rear side of the middle channel connecting plate 121 and is located at its own bottom. A plurality of eighth reinforcing ribs 127 similar to the structure of the above-mentioned reinforcing rib line 172 are preferably provided between the connecting cross beam 1212 and the rear side flange 1213 of the middle channel to improve the structural strength of the rear part of the middle channel connecting plate 121. Of course, in addition to being similar to the structure of the above-mentioned reinforcing rib line 172, the plurality of eighth reinforcing ribs 127 can also be in the shape of a "rice" character as shown Figure 4 in.

[0078] In addition, when necessary in this embodiment, reinforcing ribs can also be provided on the side of the front lower cross member 11 facing the front of the vehicle to increase the force transmission path and improve the structural performance. Moreover, it can be understood that the cooperation of components such as the torsion box 13, the rear section of the front engine compartment longitudinal beam 14, the connecting beam 17, the connecting cross beam 1212, the inclined support beam 18, and each reinforcing rib and each rib line in this embodiment can greatly increase the force transmission path of the structural body 10 and improve its structural strength and collision effect.

[0079] The front lower structure of this embodiment can not only reduce the number of components used in the front lower part, achieve weight reduction design, and facilitate the preparation of the front lower structure, helping to reduce the vehicle body manufacturing cost, but also is beneficial to improving the overall structural strength of the front lower position, thereby facilitating the improvement of the overall vehicle collision safety.

[0080] Embodiment 2

[0081] This embodiment relates to a vehicle, and the front lower structure in Embodiment 1 is provided in the vehicle body of this vehicle.

[0082] The vehicle of this embodiment can facilitate the preparation and cost reduction of the whole vehicle and improve the collision performance of the whole vehicle by setting the lower front panel structure in the first embodiment, thereby enabling the whole vehicle to have better quality and market competitiveness.

[0083] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A lower front structure, characterized in that: It includes an integrally formed structure body (10); The structure body (10) is formed with a middle structure in the middle, and side structures are arranged on both the left and right sides of the middle structure; The middle structure includes a lower front cross beam (11) and a lower front panel (12) located below the lower front cross beam (11). Both side structures on both sides include a front section of the inner sill beam (15) and an inner A-pillar (16).

2. The lower front structure according to claim 1, characterized in that: The lower front panel (12) includes a middle channel connecting plate (121) in the middle, and lower front panels (122) respectively arranged on the left and right sides of the middle channel connecting plate (121); Torsion boxes (13) and rear sections of the front engine compartment longitudinal beams (14) are formed at the bottoms of the lower front panels (122) on both sides. One side of each torsion box (13) is connected to the front section of the inner sill beam (15) on the same side, and the other side of each torsion box (13) is connected to the rear section of the front engine compartment longitudinal beam (14) on the same side.

3. The lower front structure according to claim 2, characterized in that: On one side of the lower front cross beam (11) facing the rear of the vehicle, there are a first reinforcing rib (111) extending in the left-right direction of the whole vehicle and a second reinforcing rib (112) extending in the up-down direction of the whole vehicle; The first reinforcing ribs (111) are multiple arranged at intervals in the up-down direction of the whole vehicle, and at least part of the first reinforcing ribs (111) penetrate from one end of the lower front cross beam (11) to the other end of the lower front cross beam (11); The second reinforcing ribs (112) are multiple arranged at intervals in the left-right direction of the whole vehicle, and each of the second reinforcing ribs (112) intersects with at least part of the first reinforcing ribs (111).

4. The lower front structure according to claim 3, characterized in that: On the upper parts of the lower front panels (122) on both sides, there are third reinforcing ribs (113) extending in the front-rear direction of the whole vehicle. The third reinforcing ribs (113) are multiple arranged at intervals in the left-right direction of the whole vehicle, and at least part of the third reinforcing ribs (113) are connected to the second reinforcing ribs (112) one by one; and / or, The middle channel connecting plate (121) bulges upward, and at the top of the middle channel connecting plate (121), there is a fourth reinforcing rib (1211) extending in the front-rear direction of the whole vehicle. The front end of the fourth reinforcing rib (1211) extends to the lower front cross beam (11) and forms a support for the lower front cross beam (11) at least in the front-rear direction of the whole vehicle.

5. The lower front structure according to claim 2, characterized in that: On one side of the lower front panels (122) on both sides facing the front of the vehicle, there are fifth reinforcing ribs (1221), and the fifth reinforcing ribs (1221) include an annular rib (12211) at the center and multiple radial ribs (12212) arranged in a radial shape; and / or, A sixth reinforcing rib (123) is connected between the torsion box (13) on each side and the rear section (14) of the front cabin longitudinal beam. The sixth reinforcing rib (123) is located on the side of the torsion box (13) facing the front of the vehicle, and the sixth reinforcing rib (123) is a plurality of ribs arranged at intervals along the vertical direction of the vehicle.

6. The front wall lower structure according to claim 2, characterized in that: The bottom of the front enclosure lower plates (122) on both sides are formed with connecting beams (17), one end of the connecting beam (17) on each side is connected to the rear section (14) of the front cabin longitudinal beam on the same side, and the other end of the connecting beam (17) on each side is connected to a connecting cross beam (1212) located at the bottom of the middle channel connecting plate (121); Wherein, one end of the connecting beam (17) on each side connected to the rear section (14) of the front cabin longitudinal beam is connected to the torsion box (13) on the same side in the left-right direction of the whole vehicle.

7. The front wall lower structure according to claim 6, characterized in that: An oblique support beam (18) is connected between the rear section (14) of the front cabin longitudinal beam on each side and the connecting beam (17); The rear section (14) of the front cabin longitudinal beam on each side, the connecting beam (17) and the oblique support beam (18) are all connected to form a triangular structure, and one end of the oblique support beam (18) on each side connected to the rear section (14) of the front cabin longitudinal beam is connected to the torsion box (13) on the same side in the left-right direction of the whole vehicle.

8. The front wall lower structure according to claim 7, characterized in that: Front subframe mounting points (171) are provided in the connecting beams (17) on both sides; There are multiple front sub-frame mounting points (171) on each side, and at least one of the front sub-frame mounting points (171) is located at the connection position between the oblique support beam (18) and the connecting beam (17), and / or a reinforcing rib line (172) is provided in the connecting beam (17), and part of the reinforcing rib line (172) is connected to the front sub-frame mounting point (171).

9. The front wall lower structure according to any one of claims 1 to 8, characterized in that: The top of the lower cross beam (11) of the front wall is formed with a front wall panel connecting flange (114) which is arranged upwardly convex; and / or, The structural body (10) is integrally die-casted using an aluminum alloy or a magnesium alloy.

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

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