Front wall lower structure and vehicle

Abstract

The utility model provides a front wall lower portion structure and a vehicle, the front wall lower portion structure comprises an integrally formed structure body; a front wall lower cross beam and a front wall plate lower plate located below the front wall lower cross beam are formed on the structure body. The front wall plate lower plate comprises a middle channel connecting plate located in the middle and front wall lower plates arranged on the left side and the right side of the middle channel connecting plate respectively. According to the front wall lower structure, the front wall lower cross beam, the middle channel connecting plate and the front wall lower plates are integrated, so that the use number of front wall lower parts is reduced, preparation of the front wall lower structure is facilitated, weight reduction design is achieved, reduction of the manufacturing cost of a vehicle body is facilitated, and the purposes of cost reduction and efficiency improvement are achieved; and meanwhile, the overall structural strength of the lower portion of the front wall is improved, the collision safety of the whole vehicle is improved, and the quality of the whole vehicle is improved.

Description

Technical Field

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

[0002] As an important component structure in the front part of the vehicle body, the lower front panel structure undertakes functions such as vehicle component loading and protecting the safety of the front-row occupants. Specifically, it usually adopts a multi-sheet metal welding structure. However, the use of a multi-sheet metal welding structure not only makes the sheet metal parts of the lower front panel structure numerous, heavy, and inconvenient to manufacture, increasing the vehicle body manufacturing cost, but also is not conducive to improving the structural strength and force transmission performance of the lower front panel position, affecting the improvement of the vehicle's overall 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 propose a lower front panel structure to achieve the purpose of reducing costs and increasing efficiency while improving the collision performance of the lower front panel position.

[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 lower front cross member and a lower front panel located below the lower front cross member;

[0007] The lower front panel includes a middle channel connecting plate in the middle and lower front panels respectively arranged on the left and right sides of the middle channel connecting plate.

[0008] Furthermore, on one side of the lower front cross member facing the rear of the vehicle, there are 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; 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 member to the other end of the lower front cross member; the second reinforcing ribs are multiple and arranged at intervals along the left and right direction of the vehicle, and each of the second reinforcing ribs intersects with at least part of the first reinforcing ribs.

[0009] Furthermore, third stiffening ribs extending in the longitudinal direction of the vehicle body are provided on the upper parts of the lower front apron plates on both sides. The third stiffening ribs are multiple and arranged at intervals in the transverse direction of the vehicle body, and at least part of the third stiffening ribs are connected to the second stiffening ribs in a one-to-one correspondence; and / or, the center tunnel connecting plate bulges upward, and a fourth stiffening 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 stiffening rib extends to the lower front cross member, and at least forms a support for the lower front cross member in the longitudinal direction of the vehicle body.

[0010] Furthermore, front sections of the inner sill beams are formed on the left and right sides of the lower front apron plate, and rear sections of the front engine bay longitudinal beams and torque boxes are formed at the bottoms of the lower front apron plates on both sides; one side of each torque box is connected to the front section of the inner sill beam on the same side, and the other side of each torque box is connected to the rear section of the front engine bay longitudinal beam on the same side.

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

[0012] Furthermore, connecting beams are formed at the bottoms of the lower front apron plates on both sides. One end of each connecting beam is connected to the rear section of the front engine bay 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, the end of each connecting beam connected to the rear section of the front engine bay longitudinal beam is arranged to be connected to the torque box on the same side in the transverse direction of the vehicle body.

[0013] Furthermore, diagonal support beams are connected between the rear sections of the front engine bay longitudinal beams and the connecting beams on each side; the rear sections of the front engine bay longitudinal beams, the connecting beams and the diagonal support beams on each side are connected to form a triangular structure, and the end of each diagonal support beam connected to the rear section of the front engine bay longitudinal beam is arranged to be connected to the torque box on the same side in the transverse direction of the vehicle body.

[0014] Furthermore, 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, stiffening rib lines are provided in the connecting beams, and part of the stiffening rib lines are connected to the front subframe mounting points.

[0015] Furthermore, a flanging for connecting the front panel is formed on the top of the lower front cross member and protrudes upward; 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] For the lower front structure of the utility model, by integrating the lower front cross member, the middle channel connecting plate and each lower front panel into one body, the number of parts used in the lower front part can be reduced, which is convenient for the preparation of the lower front structure and realizes the weight reduction design, helps to reduce the body manufacturing cost, achieves the purpose of cost reduction and efficiency improvement, and at the same time is beneficial to improving the overall structural strength of the lower front part and the safety of the whole vehicle during collision, thus facilitating the improvement of the quality of the whole vehicle.

[0018] In addition, by arranging the first reinforcing rib and the second reinforcing rib intersecting at the lower front cross member, the structural strength of the lower front cross member can be guaranteed, and the first reinforcing rib runs through horizontally, which can also make the lower front cross member have better lateral (i.e., the left-right direction of the whole vehicle) stiffness and improve the torsional stiffness of the body. The third reinforcing rib is arranged on the upper part of the lower front panel to increase the structural strength of the lower front panel. The 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 member, which can improve the structural stability of the lower front horizontal position during the frontal collision of the whole vehicle and the ability of the lower front cross member to resist deformation and prevent tipping, and helps to increase the safety of the driver and passengers during the frontal collision of the vehicle.

[0019] Secondly, by forming the front section of the inner panel of the sill beam on both sides and forming the rear section of the front engine compartment longitudinal beam and the torque box at the bottom of the lower front panels on both sides, the parts integration degree of the structural body can be further improved, which is beneficial to the preparation of the lower front structure and the reduction of the body manufacturing cost. By arranging the fifth reinforcing rib and the sixth reinforcing rib, the structural strength of the left and right sides of the lower front part can be increased, which helps to increase the safety of the vehicle during small overlap collisions. By arranging the connecting beam connected to the rear section of the front engine compartment longitudinal beam, connecting the two connecting beams together through the 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 torque box in a connecting manner, the cross beam stiffness at the bottom of the lower front part can be increased, which helps to improve the torsional stiffness of the whole vehicle.

[0020] Moreover, by providing the diagonal support beam, the stiffness of the bottom part of the lower front panel can be further increased, which can better improve the torsional stiffness of the whole vehicle and enhance the safety of the vehicle during a collision. By providing the front subframe mounting points in the connecting beam, the connection with the front subframe can be facilitated. Moreover, by making the front subframe mounting points located at the connection position between the diagonal support beam and the connecting beam, and making the reinforcing rib lines in the connecting beam connected to the front subframe mounting points, the structural strength of the front subframe mounting points can be increased, the stability of the front subframe mounting can be ensured, and at the same time, it is also beneficial for the force from the front subframe to be transmitted to other positions.

[0021] In addition, the provision of the flanging for connecting the front panel can facilitate the connection with the front panel. By using die-casting of aluminum alloy or magnesium alloy, the forming of the structural body can be facilitated, and the weight of the structural body can also be reduced, which is beneficial for realizing the lightweight design of the vehicle body.

[0022] Another object of the present invention is to provide a vehicle, in which the body of the vehicle is provided with the lower front panel structure as described above; the rear end of the lower front panel is connected to the front floor in the body, and a reinforcing longitudinal beam with its front end connected to the lower front panel is provided on the front floor.

[0023] In the vehicle of the present invention, the above-mentioned lower front panel structure is provided. By providing the reinforcing longitudinal beam, the reliability of the connection between the lower front panel and the front floor can be increased, which helps to improve the torsional stiffness of the front part of the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions 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 panel 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 panel structure according to an embodiment of the present invention from another perspective;

[0028] Figure 7 is a schematic diagram of a part of the structure of the vehicle body according to an embodiment of the present invention;

[0029] Figure 8 is Figure 7 a schematic diagram of the structure shown in

[0030] Figure 9Schematic diagram of the structure of the reinforcing longitudinal beam according to an embodiment of the present utility model;

[0031] Figure 10 Schematic diagram of the structure of the middle channel connecting plate according to an embodiment of the present utility model;

[0032] Figure 11 Schematic diagram of the structure of the front floor lower longitudinal beam according to an embodiment of the present utility model;

[0033] Figure 12 Schematic diagram of the structure of the front panel according to an embodiment of the present utility model;

[0034] Explanation of reference numerals:

[0035] 10. Structural body;

[0036] 11. Front lower cross beam; 111. First reinforcing rib; 112. Second reinforcing rib; 113. Third reinforcing rib; 114. Front panel connecting flange;

[0037] 12. Front panel lower plate; 121. Middle channel connecting plate; 1211. Fourth reinforcing rib; 1212. Connecting cross beam; 1213. Rear side flange of the middle channel; 122. Front lower 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;

[0038] 13. Torque box; 131. Beam body;

[0039] 14. Rear section of the front engine compartment longitudinal beam; 141. Lapping part;

[0040] 15. Front section of the inner panel of the sill beam; 17. Connecting beam; 171. Front subframe mounting point; 172. Reinforcing rib line;

[0041] 18. Diagonal support beam;

[0042] 21. Middle channel; 211. Side flange;

[0043] 22. Front floor; 23. Reinforcing longitudinal beam; 231. First floor connecting flange;

[0044] 24. Front floor lower longitudinal beam; 241. Second floor connecting flange;

[0045] 25. Front panel; 251. Lower flange. Detailed implementation manners

[0046] 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.

[0047] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can 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.

[0048] In the description of the present utility model, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship 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 cannot be construed as a limitation of the present utility model. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0049] Taking the vehicle where the lower front panel structure described in the present utility model is located as an example, the orientation terms such as "upper, lower, left, right, front, rear" used in the embodiments are defined based on the up and down direction (also known as the height direction, or the vehicle body Z direction), the left and right direction (also known as the width direction, or the vehicle body Y direction), and the front and 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 contour of the corresponding component. 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".

[0050] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installed", "connected", "connected", and "connecting member" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. 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.

[0051] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0052] Embodiment 1

[0053] This embodiment relates to a lower front panel structure, which can solve the problems existing in the front structure of the traditional vehicle body, especially the related structures in the front panel position, such as the large number of parts used, which is not conducive to weight reduction and cost reduction, and improving the collision performance.

[0054] In terms of the overall structure, asFigures 1 to 6 As shown, the lower front structure of this embodiment includes a structurally integrated body 10. The structural body 10 is formed with a lower front cross beam 11 and a lower front panel 12 located below the lower front cross beam 11. Moreover, the lower front panel 12 includes a middle channel connecting plate 121 in the middle and lower front panels 122 disposed on the left and right sides of the middle channel connecting plate 121 respectively.

[0055] At this time, with the above arrangement, by integrating the lower front cross beam 11, the middle channel connecting plate 121 and each lower front panel 122 into one body, the number of lower front components can be reduced, which is convenient for the preparation of the lower front structure, and a weight reduction design can be achieved, contributing to reducing the body manufacturing cost and achieving the purpose of cost reduction and efficiency improvement. At the same time, it is also beneficial to enhance the overall structural strength of the lower front position and improve the safety of the whole vehicle during a collision.

[0056] Based on the above overall introduction, specifically speaking, in this embodiment, during specific implementation, a steering gear through hole 124 for the installation and arrangement of the steering gear is further provided on the lower front panel 12. And for the related structural parts not mentioned in the lower front structure of this embodiment, the well-known body structures in the art can be referred to and will not be elaborated here.

[0057] In this embodiment, as a preferred implementation form, still as Figure 1 shown, on one side of the lower front cross beam 11 facing the rear of the vehicle, 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 are provided.

[0058] Moreover, the first reinforcing ribs 111 are multiple and 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 and arranged at intervals in the left-right direction of the whole vehicle, and each second reinforcing rib 112 intersects with at least part of the first reinforcing ribs 111.

[0059] By providing the intersecting first reinforcing rib 111 and second reinforcing rib 112 at the lower front cross beam 11, the structural strength of the position of the lower front cross beam 11 can be ensured. And since the first reinforcing rib 111 is transversely penetrated, the lower front cross beam 11 can also have good lateral (i.e., the left-right direction of the whole vehicle) stiffness, which can improve the torsional stiffness of the body.

[0060] It is worth mentioning that the cross-section of the lower front crossbeam 11 in this embodiment is designed in a U shape visually as a whole, so as to have better structural strength and facilitate the arrangement of the first reinforcing rib 111 and the second reinforcing rib 112. Secondly, the quantity and arrangement form of the first reinforcing rib 111 and the second reinforcing rib 112 can be set and adjusted accordingly according to the actual structural strengthening requirements of the lower front crossbeam 11. For example, the first reinforcing rib 111 is two or three arranged at intervals in 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.

[0061] Furthermore, as a preferred implementation form, in this embodiment, on the upper parts of the two side lower front panels 122, 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. The main advantage of such a setting is that it can increase the force transmission path and smoothness, and improve the structural strength at the position of the lower front panel 122.

[0062] When implementing this embodiment specifically, the extension length of each third reinforcing rib 113 can be set and adjusted according to the structural strength requirements of the corresponding lower front panel 122. And as a preferred implementation form, on the side of the middle structure facing the rear of the whole vehicle, the protruding dimension of each third reinforcing rib 113 compared with the corresponding lower front panel 122 is smaller than the protruding dimension of each second reinforcing rib 112 compared with the lower front crossbeam 11, so as to facilitate the realization of the structural design with different structural strength requirements at different positions and the connection with the surrounding components at the lower front position.

[0063] It should be noted that the steering gear through-hole 124 in this embodiment is specifically arranged on the left lower front panel 122. At the front end of the rear section of the front engine compartment longitudinal beam 14 in this embodiment in the front-rear direction of the whole vehicle, there is also a lap joint part 141 for lap joint connection with the flange of the front engine compartment longitudinal beam, so as to improve the assembly convenience of the front part structure of the vehicle body.

[0064] And, in this embodiment, as a preferred implementation form, as Figure 3 shown, on the left and right sides of the lower front panel 12 of the front panel, the front sections 15 of the inner panels of the sill beams are formed, and at the bottoms of the two side lower front panels 122, the rear sections 14 of the front engine compartment longitudinal beams and the torque boxes 13 are formed. Among them, one side of each torque box 13 is connected to the front section 15 of the inner panel of the sill beam on the same side, and the other side of each torque box 13 is connected to the rear section 14 of the front engine compartment longitudinal beam on the same side.

[0065] By forming the front sections 15 of the inner panels of the sill beams on both sides, and forming the rear sections 14 of the front engine compartment longitudinal beams and the torque boxes 13 at the bottoms of the two side lower front panels 122, 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 vehicle body manufacturing cost.

[0066] The lower front panel structure of this embodiment can reduce the number of components in the lower front panel, facilitate the preparation of the lower front panel structure, help reduce the vehicle body manufacturing cost, and at the same time is conducive to improving the overall structural strength of the lower front panel position and the safety of the whole vehicle during a collision.

[0067] In addition, in this embodiment, as a preferred implementation form, combined with Figure 1 as shown, the center tunnel connecting plate 121 bulges upward, and a fourth reinforcing rib 1211 extending in the longitudinal direction of the vehicle is provided at the top of the center tunnel connecting plate 121. The front end of the fourth reinforcing rib 1211 extends to the lower front cross member 11 and forms a support for the lower front cross member 11 at least in the longitudinal direction of the vehicle.

[0068] It can be understood that by providing the fourth reinforcing rib 1211 on the top of the center tunnel connecting plate 121 and enabling the front end of the fourth reinforcing rib 1211 to form a support for the lower front cross member 11, the structural stability of the lower front cross member 11 during a frontal collision of the whole vehicle can be improved, and the ability of the lower front cross member 11 to resist deformation and prevent tipping can be enhanced, which helps to increase the safety of the driver and passengers during a frontal collision of the vehicle.

[0069] Moreover, in the specific structure, the cross-section of the above-mentioned center tunnel connecting plate 121 is visually inverted U-shaped as a whole, and the fourth reinforcing rib 1211 is provided on the top surface of the center tunnel 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 center tunnel connecting plate 121. For example, it can be three or four arranged at intervals in the transverse direction of the vehicle, etc.

[0070] In addition, in this embodiment, as a preferred implementation form, combined with Figure 3 and Figure 5 as shown, fifth reinforcing ribs 1221 are provided on one side of each of the two lower front panels 122 facing the front of the vehicle, and the fifth reinforcing rib 1221 includes an annular rib 12211 at the center and a plurality of radial ribs 12212 arranged radially. The main advantage of such a setting is that an irregular 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 sides of the lower front panel.

[0071] Meanwhile, in this embodiment, 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 rib 123 is a plurality of ribs arranged at intervals in the up-down direction of the whole vehicle. Thus, through the combination of the sixth reinforcing rib 123 and 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 panel can be increased, which helps to improve the safety of the vehicle during small overlap collisions.

[0072] Of course, in this embodiment, the quantity 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 panel. For example, the fifth reinforcing rib 1221 is four or five ribs arranged in a staggered manner in sequence, and the sixth reinforcing rib 123 is three or four ribs arranged at intervals in the up-down direction of the whole vehicle, etc.

[0073] In addition, in this embodiment, as a preferred implementation form, as Figure 4 shown, connecting beams 17 are formed at the bottoms of the two side lower front panel 122. 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, one end of each side connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14 is arranged in connection with the torsion box 13 on the same side in the left-right direction of the whole vehicle.

[0074] Here, by providing the connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14, and connecting the two side connecting beams 17 together through the connecting cross beam 1212 at the bottom of the middle channel connecting plate 121, and arranging one end of the connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14 in connection with the torsion box 13, the lateral stiffness of the bottom of the lower part of the front panel can be increased, which helps to improve the torsional stiffness of the whole vehicle.

[0075] It should be noted that the so-called connection arrangement in this embodiment means that at least part of the projections of one end of the connecting beam 17 connected to the rear section of the front engine compartment longitudinal beam 14 and the torsion box 13 overlap in the left-right direction of the whole vehicle, and as Figure 3 shown, as a preferred implementation form, side plates 125 are respectively provided on the left and right sides of the lower front panel 12. The front sections of the inner panels of the two side sill beams 15 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 side torsion box 13 includes two beam bodies 131 arranged at intervals in the front-rear direction of the whole vehicle. 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 torsion box 13, and the torsion box 13 is formed in the box-shaped structure area surrounded by the beam bodies 131, the side plates 125 and the rear section of the front engine compartment longitudinal beam 14.

[0076] Of course, each side torsion box 13 can also be composed of only two beam bodies 131, that is, each beam body 131 itself is a torsion box structure. And, to ensure that the torsion box 13 has good force transmission and energy absorption effects, as a preferred implementation form, the above-mentioned beam bodies 131 each include two side walls arranged opposite to each other in the front-rear direction of the whole vehicle, 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 torsion box 13.

[0077] Furthermore, still as Figure 4 shown in, the above-mentioned connecting cross beam 1212 and the two side connecting beams 17 are in an inverted "Ji" shape in the overall visual sense to enhance the stiffness of the structural body 10 in the front-rear direction and left-right direction of the whole vehicle. At the same time, in this embodiment, on the side facing outwards in the left-right direction of the whole vehicle, each side plate 125 can also be connected to the A-pillar in the vehicle body. Specifically, the A-pillar can be an inner A-pillar or the lower section of the inner A-pillar, etc.

[0078] 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 one end of each side inclined support beam 18 connected to the rear section 14 of the front engine compartment longitudinal beam is arranged in connection with the torsion box 13 on the same side in the left-right direction of the whole vehicle.

[0079] 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 whole vehicle 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 a similar triangle as Figure 4 shown in.

[0080] In addition, in this embodiment, as a preferred implementation form, still referring to Figure 4 shown, front subframe mounting points 171 are provided in both side connecting beams 17. Expanding, each side front subframe mounting point 171 is multiple, and at least one front subframe mounting point 171 is located at the connection position between the inclined 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.

[0081] It can be understood that by providing the front subframe mounting points 171 within the connecting beam 17, it is convenient to connect with the front subframe, and the front subframe mounting points 171 are located at the connection position between the diagonal support beam 18 and the connecting beam 17, and the reinforcing rib lines 172 within the connecting beam 17 are connected to the front subframe mounting points 171, all of which can increase the structural strength of the front subframe mounting points 171, ensure the stability of the front subframe installation, and also facilitate the transfer of forces from the front subframe to other positions.

[0082] 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 within the connecting beam 17, etc.

[0083] Moreover, in specific implementation, the connecting beam 17 may include two side walls arranged oppositely, and the reinforcing rib lines 172 include a plurality of reinforcing ribs connected between the two side walls. Among them, a part of the reinforcing ribs are arranged radially around the front subframe mounting points 171, and the other part forms a plurality of triangular structures with the two side walls. In this way, the force transmission paths of the connecting beam 17 can be enriched, and the collision effect can be improved.

[0084] Meanwhile, in this embodiment, 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 can all preferably refer to the structural design of the above-mentioned beam body 131, 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.

[0085] And, in this embodiment, as a preferred implementation form, as Figure 6 shown, a front panel connection flange 114 protruding upward is formed on the top of the lower front cross beam 11 to facilitate the connection with the front panel. In the specific structure, the above-mentioned side plates 125 are all connected to the front panel connection flange 114 to facilitate the overall preparation of the structural body 10.

[0086] In addition, also as a preferred implementation form, the structural body 10 of this embodiment is integrally die-cast from aluminum alloy or magnesium alloy, which can facilitate the forming of the structural body 10, and can also reduce the weight of the structural body 10, facilitating the realization of the lightweight design of the vehicle body.

[0087] It is still worth mentioning that in this embodiment, in combination with Figure 4As shown, multiple seventh reinforcing ribs 126 arranged at intervals in the front-rear direction of the vehicle are further 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. Some of the seventh reinforcing ribs 126 are connected between the middle channel connecting plate 121 and the lower front panel 122 on any one side, so as to improve the overall structural strength of the lower front panel 12.

[0088] Moreover, a rear flanging 1213 of the middle channel is provided at the rear side of the middle channel connecting plate 121 and located at its own bottom. Multiple 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 flanging 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 multiple eighth reinforcing ribs 127 can also be in the Figure 4 "rice" shape design as shown.

[0089] In addition, when necessary in this embodiment, reinforcing ribs can also be provided on the side of the lower front cross beam 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.

[0090] The lower front structure of this embodiment can not only reduce the number of components used in the lower front part, achieve weight reduction design, and facilitate the preparation of the lower front structure, which helps to reduce the body manufacturing cost, but also is beneficial to improving the overall structural strength of the lower front position, thereby facilitating the improvement of the vehicle collision safety.

[0091] Embodiment 2

[0092] This embodiment relates to a vehicle, and the lower front structure in Embodiment 1 is provided in the body of the vehicle. And, as Figure 7 and Figure 8 shown, the rear end of the lower front panel 12 is connected to the front floor 22 in the vehicle body, and a reinforcing longitudinal beam 23 with its front end connected to the lower front panel 12 is provided on the front floor 22.

[0093] At this time, specifically speaking, in this embodiment, when implemented, there are two front floors 22 provided corresponding to each lower front panel 122. A reinforcing longitudinal beam 23 is provided between each front floor 22 and the corresponding lower front panel 122. A middle channel 21 is further provided between the two front floors 22 on both sides. The middle channel 21 is connected to the middle channel connecting plate 121 in the front-rear direction of the vehicle.

[0094] Combined withFigure 7 and Figure 9 As shown in Figure 9 , the cross-section of the reinforcing longitudinal beam 23 is visually in a "Ji" shape as a whole, and has first floor connection flanges 231 on its left and right sides, so as to ensure the connection strength between the reinforcing longitudinal beam 23 and the corresponding front floor 22 and the lower front panel 122.

[0095] Moreover, in order to further optimize the force transmission path at the front of the vehicle body and enhance the structural strength of the front of the vehicle body, as a preferred implementation form, in this embodiment, under each front floor 22, there is also provided a front floor lower longitudinal beam 24 extending along the front-rear direction of the whole vehicle, and the front end of each front floor lower longitudinal beam 24 is connected to the rear section 14 of the front engine compartment longitudinal beam on the same side.

[0096] In addition, it is still worth mentioning that, in this embodiment, as shown in Figure 11 Figure 11 , the front floor lower longitudinal beam 24 is preferably set to have a cross-section in a "Ji" shape and has second floor connection flanges 241 on the left and right sides. The "Ji" shape design can ensure the structural strength of the front floor lower longitudinal beam 24 itself, and each second floor connection flange 241 on each side is conducive to connecting the front floor lower longitudinal beam 24 to the corresponding front floor 22 on the corresponding side.

[0097] It should be noted that since the structures of the reinforcing longitudinal beams 23 on the left and right sides are basically similar and can be regarded as mirror images of each other, only the left reinforcing longitudinal beam 23 is shown in the attached Figure 9 Similarly, considering that the structures of the front floor lower longitudinal beams 24 on the left and right sides are basically similar and can be regarded as mirror images of each other, only the left front floor lower longitudinal beam 24 is shown in the attached Figure 11 Figure 11 for illustration.

[0098] Meanwhile, as shown in Figure 10 Figure 10 , the middle channel 21 can also be preferably set to a structural shape similar to that of the front floor lower longitudinal beam 24. For example, its cross-section is also in a "Ji" shape and has side flanges 211 on the left and right sides. The "Ji" shape design is used to ensure the structural strength of the middle channel 21 itself, and each side flange 211 is conducive to connecting the middle channel 21 to the front floors 22 on each side.

[0099] In addition, referring back to Figure 7 , Figure 8 and Figure 12 It can be known that when this embodiment is specifically implemented, a front panel 25 is further provided on the top of the lower front cross beam 11, and a lower flange 251 is provided at the bottom of the front panel. The lower flange 251 is specifically connected to the front panel connection flange 114 to form the connection between the front panel 25 and the structural body 10.

[0100] The vehicle of this embodiment can improve the overall vehicle collision performance by setting the lower front structure in Embodiment 1, and has the advantages of cost reduction and efficiency improvement, making the vehicle have better product quality and market competitiveness.

[0101] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A front lower structure, characterized in that: It comprises an integrally formed structural body (10); The structural body (10) is formed with a front wall lower cross beam (11) and a front wall lower plate (12) located below the front wall lower cross beam (11); The dash panel lower plate (12) comprises a middle channel connecting plate (121) located in the middle, and dash panel lower plates (122) arranged on the left and right sides of the middle channel connecting plate (121).

2. The front wall lower structure according to claim 1, characterized in that: The side of the front lower cross beam (11) facing the rear of the vehicle is provided with 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 and spaced apart in the vertical direction of the vehicle, and at least part of the first reinforcing ribs (111) penetrates from one end of the front enclosure lower cross beam (11) to the other end of the front enclosure lower cross beam (11); The second reinforcing ribs (112) are multiple and are arranged at intervals along the left-right direction of the vehicle, and each of the second reinforcing ribs (112) is arranged to intersect with at least part of the first reinforcing ribs (111).

3. The front wall lower structure according to claim 2, characterized in that: The upper parts of the front lower panels (122) on both sides are provided with third reinforcing ribs (113) extending along the front-rear direction of the whole vehicle, the third reinforcing ribs (113) are multiple and arranged at intervals along the left-right direction of the whole vehicle, and at least some of the third reinforcing ribs (113) are connected to the second reinforcing ribs (112) in a one-to-one correspondence; and / or, The middle channel connecting plate (121) is arranged to bulge upwards, and a fourth reinforcing rib (1211) extending in the front-rear direction of the whole vehicle is provided on the top of the middle channel connecting plate (121), and the front end of the fourth reinforcing rib (1211) extends to the lower cross beam (11) of the front enclosure, and forms support for the lower cross beam (11) of the front enclosure at least in the front-rear direction of the whole vehicle.

4. The front wall lower structure according to claim 1, characterized in that: The left and right sides of the front wall lower plate (12) are both formed with a sill beam inner plate front section (15), and the bottoms of the front wall lower plates (122) on both sides are both formed with a front cabin longitudinal beam rear section (14) and a torque box (13); One side of the torsion box (13) on each side is connected to the front section (15) of the inner plate of the sill beam on the same side, and the other side of the torsion box (13) on each side is connected to the rear section (14) of the front cabin longitudinal beam on the same side.

5. The front wall lower structure according to claim 4, characterized in that: A fifth reinforcing rib (1221) is provided on the side of the front lower panels (122) on both sides facing the front of the vehicle, and the fifth reinforcing rib (1221) includes a centrally located annular rib (12211) and a plurality of radially arranged ribs (12212); 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 4, 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 a front wall lower structure according to any one of claims 1 to 9; The rear end of the dash panel lower plate is connected to the front floor (22) in the vehicle body, and the front floor (22) is provided with a reinforcing longitudinal beam (23) whose front end is connected to the dash panel lower plate (12).

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