Front bulkhead assembly and vehicle

Abstract

The present invention provides a front bulkhead assembly and a vehicle. The front bulkhead assembly of the present invention includes a front bulkhead and a reinforcing cross beam disposed on the side of the front bulkhead facing the front engine compartment. The front bulkhead has a main body portion and A-pillar connection portions respectively disposed on the left and right sides of the main body portion. The A-pillar connection portions on both sides extend backward in the vehicle's front-rear direction and incline outward on the vehicle's left-right direction, and each A-pillar connection portion is connected to the A-pillar on the same side. The reinforcing cross beam includes a middle section disposed on the main body portion and A-pillar connection sections respectively disposed on the two A-pillar connection portions, and each A-pillar connection section is connected to the A-pillar on the same side. The front bulkhead assembly described in the present invention can effectively enhance the structural strength of the front bulkhead, so that the front bulkhead assembly has a high structural strength to reduce the vibration response sensitivity and improve the vehicle's NVH performance.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly relates to a front bulkhead assembly. At the same time, the present invention also relates to a vehicle provided with the front bulkhead assembly. Background Art

[0002] Currently, in the vehicle body structure, the main functions of the front bulkhead assembly and the front middle channel are to act as a partition between the cockpit and the front engine compartment, so as to attenuate the heat, noise, vibration energy, etc. generated by the powertrain in the front engine compartment, thereby improving the overall vehicle NVH (Noise, Vibration, Harshness) performance.

[0003] However, in the prior art, there are problems such as insufficient structural strength of the front bulkhead itself and weak connection strength between the front bulkhead and components such as the front floor, A-pillar, and lower cross member of the front windshield, resulting in high vibration response sensitivity and easy to cause interior noise and vibration problems. In addition, the existing middle channel also has problems of insufficient local structural strength, which affects the improvement of the overall vehicle NVH performance. Summary of the Invention

[0004] In view of this, the present invention aims to provide a front bulkhead assembly with high structural strength, which can reduce the vibration response sensitivity.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A front bulkhead assembly includes a front bulkhead and a reinforcing cross beam provided on the side of the front bulkhead facing the front engine compartment; the front bulkhead has a main body portion and A-pillar connection portions respectively provided on the left and right sides of the main body portion, and both side A-pillar connection portions extend backward along the front-rear direction of the vehicle and incline outward on the vehicle body left-right direction, and each side A-pillar connection portion is connected to the A-pillar on the same side; the reinforcing cross beam includes a middle section provided on the main body portion and A-pillar connection sections respectively provided on the two A-pillar connection portions, and each side A-pillar connection section is connected to the A-pillar on the same side.

[0007] Further, the main body portion includes a main board body and a floor connection board body provided at the bottom of the main board body; the floor connection board body extends backward along the front-rear direction of the vehicle and inclines downward in the up-down direction of the vehicle; the middle section is provided at the bottom of the main board body.

[0008] Further, a bending portion is provided between the middle section and the A-pillar connection section, and a chamfered surface is formed at the corner of the bending portion.

[0009] Further, the front bulkhead assembly further includes a lower cross member of the front windshield disposed at the top of the front bulkhead, and the middle part of the lower cross member of the front windshield arches upward in the up-down direction of the whole vehicle.

[0010] Further, a reinforcing plate connected to the lower cross member of the front windshield is provided on the side of the front bulkhead facing the driver's and passenger's cabin. The reinforcing plate is disposed opposite the driver's seat and extends downward from the lower cross member of the front windshield to the bottom of the main board body.

[0011] Further, a reinforcing protrusion protruding toward the front engine compartment is provided on the main board body.

[0012] Further, the reinforcing protrusion is rectangular, L-shaped or cross-shaped.

[0013] Further, the reinforcing protrusion includes a first protrusion disposed opposite the driver's seat and a second protrusion disposed opposite the passenger's seat; a third protrusion protruding toward the front engine compartment is formed on the first protrusion, and a fourth protrusion protruding toward the front engine compartment is formed on the second protrusion.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] For the front bulkhead assembly of the present invention, by inclining the A-pillar connection portion toward the outside of the vehicle, the structural strength of the front bulkhead itself can be initially improved, and by providing a reinforcing cross beam, the structural strength of the front bulkhead can be further enhanced, so that the front bulkhead assembly has a high structural strength, and the vibration response sensitivity can be reduced, and the NVH performance of the whole vehicle can be improved.

[0016] In addition, by providing a floor connecting plate body that inclines downward in the up-down direction of the whole vehicle, it is convenient for the front bulkhead to be connected to the front floor, and it helps to improve the connection stability between the two. Moreover, the middle section is located at the bottom of the main board body, which can improve the structural strength of the weak position in the middle of the front bulkhead. The setting of the chamfered surface is beneficial to improving the structural strength of the reinforcing cross beam, and further improving the structural strength of the front bulkhead assembly.

[0017] Secondly, the middle part of the lower cross member of the front windshield is arched, which can utilize the characteristic of the large structural strength of the arch to improve the structural strength of the upper part of the front bulkhead, and further reduce the vibration response sensitivity. The setting of the reinforcing plate can not only improve the structural strength of the side of the front bulkhead facing the driver's and passenger's cabin, but also realize the differential design of the structural strength with the part of the front bulkhead facing the passenger's seat, so that the left and right sides of the front bulkhead have different vibration frequencies, avoiding resonance, and reducing the vibration response sensitivity.

[0018] In addition, by providing reinforcing protrusions, the structural strength of the main board body can be improved, the vibration response sensitivity can be reduced, and the reinforcing protrusions are designed in a rectangular, L-shaped or cross-shaped manner, which is also beneficial to their arrangement on the main board body. Among them, the first protrusion and the third protrusion cooperate to improve the structural strength of the part of the main board body corresponding to the driver's seat, and the second protrusion and the fourth protrusion cooperate to improve the structural strength of the part of the main board body corresponding to the co-driver's seat, and the structural strength of the front bulkhead assembly can be effectively improved to reduce the vibration response sensitivity.

[0019] Another object of the present invention is to provide a vehicle, which adopts the front bulkhead assembly as described above.

[0020] Furthermore, the bottom end of the front bulkhead is connected to the front floor assembly, and the front floor assembly includes a middle channel and front floors respectively arranged on the left and right sides of the middle channel; a connecting reinforcing plate is provided between the top of the front end of the middle channel and the front bulkhead, and a cavity is formed between the connecting reinforcing plate and the middle channel; a first bracket supporting between the middle channel and the connecting reinforcing plate is provided in the cavity, and / or a second bracket is provided between the middle channel and the front floor.

[0021] By arranging the above-mentioned front bulkhead assembly on the vehicle of the present invention, the structural strength of the front bulkhead assembly can be enhanced, the vibration response sensitivity can be reduced, and the vehicle interior noise can be reduced, thereby improving the overall vehicle NVH performance. Description of the Drawings

[0022] 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:

[0023] Figure 1 is a schematic diagram of the overall structure of the vehicle seat mounting crossbeam according to Embodiment 1 of the present invention;

[0024] Figure 2 is Figure 1 an enlarged view of part A in

[0025] Figure 3 is Figure 1 a schematic diagram of the structure from another perspective of the structure shown;

[0026] Figure 4 is a schematic diagram of the structure of the main body part according to Embodiment 1 of the present invention;

[0027] Figure 5 is a schematic diagram of the structure when the front bulkhead and the middle channel are assembled according to Embodiment 2 of the present invention;

[0028] Figure 6 is Figure 5 an enlarged view of part B in

[0029] Figure 7 Schematic structural diagram during the assembly of the first bracket described in the second embodiment of the present invention;

[0030] Figure 8 Schematic structural diagram of the first bracket described in the second embodiment of the present invention;

[0031] Figure 9 Schematic structural diagram of the third reinforcing member described in the second embodiment of the present invention;

[0032] Figure 10 Schematic structural diagram of the second bracket described in the second embodiment of the present invention;

[0033] Explanation of reference numerals:

[0034] 1. Reinforcing cross beam; 2. Main body part; 3. A-pillar connection part; 4. A-pillar; 5. Lower cross beam of front windshield; 6. Reinforcing plate; 7. Middle channel; 8. Front floor; 9. Connecting reinforcing plate; 10. First bracket; 11. Second bracket; 13. First reinforcing member; 14. Second reinforcing member; 15. Third reinforcing member; 16. Torque box;

[0035] 101. Middle section; 102. A-pillar connection section; 103. Chamfered surface;

[0036] 201. Main board body; 2011. First protrusion; 2012. Second protrusion; 2013. Third protrusion; 2014. Fourth protrusion; 202. Floor connection board body;

[0037] 701. First pit structure; 702. Second pit structure; 703. Second protrusion structure;

[0038] 901. Pit part; 902. Protrusion part. Detailed implementation manners

[0039] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0040] In the description of the present invention, 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 invention 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 understood as a limitation to the present invention. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "linkage", and "connector" 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 a direct connection or an indirect connection 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 invention can be understood in combination with specific situations.

[0042] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0043] Embodiment 1

[0044] This embodiment relates to a front bulkhead assembly, which has high structural strength, can reduce the vibration response sensitivity to reduce the interior noise of the vehicle, and thus has good NVH performance.

[0045] In terms of the overall structure, as Figures 1 to 4 shown, the front bulkhead assembly of this embodiment includes a front bulkhead and a reinforcing cross beam 1 provided on the side of the front bulkhead facing the front engine compartment.

[0046] Among them, the front bulkhead has a main body portion 2 and A-pillar connection portions 3 respectively provided on the left and right sides of the main body portion 2. The two A-pillar connection portions 3 on both sides extend backward along the longitudinal direction of the vehicle body and incline outward on the vehicle body's left-right direction, and each side's A-pillar connection portion 3 is connected to the A-pillar 4 on the same side.

[0047] The reinforcing cross beam 1 includes a middle section 101 provided on the main body portion 2 and A-pillar connection sections 102 respectively provided on the two A-pillar connection portions 3. Each side's A-pillar connection section 102 is connected to the A-pillar 4 on the same side.

[0048] Based on the above overall introduction, in this embodiment, as a preferred exemplary structure, in combination with Figure 1 , Figure 3 and Figure 4 shown, the main body portion 2 includes a main board body 201 and a floor connection board body 202 provided at the bottom of the main board body 201. The floor connection board body 202 extends backward along the longitudinal direction of the vehicle body and inclines downward in the up-down direction of the vehicle body, and the middle section 101 is provided at the bottom of the main board body 201.

[0049] Here, by extending the floor connection board body 202 backward along the longitudinal direction of the vehicle body and inclining it downward in the up-down direction of the vehicle body, it is convenient for the front bulkhead to be connected to the front floor 8, and it helps to improve the connection stability between the two. Moreover, the middle section 101 is located at the bottom of the main board, which can improve the structural strength of the weak position in the middle of the front bulkhead.

[0050] During specific implementation, as Figure 2As shown, in this embodiment, as a preferred implementation form, there is a bent portion between the middle section 101 and the A-pillar connection section 102, and a chamfered surface 103 is formed at the corner of the bent portion, so as to improve the structural strength of the reinforcement cross member 1, and further improve the structural strength of the front bulkhead assembly.

[0051] It is worth mentioning that the specific structural shape of the reinforcement cross member 1 in this embodiment can be designed accordingly according to the actual reinforcement requirements of the front bulkhead. For example, it can be specifically set as a convex structure protruding forward in the front-rear direction of the vehicle, the convex height can be 69 mm, and its width in the up-down direction of the vehicle can be set to 162 mm, so as to have better structural strength.

[0052] Moreover, the length of the middle section 101 of the above-mentioned reinforcement cross member 1 in the left-right direction of the vehicle can also be set and adjusted accordingly according to the actual front bulkhead reinforcement requirements. For example, the middle section 101 can be specifically set to 1 / 2 of the vehicle width, that is, the corners of the bent portion formed by the middle section 101 and the A-pillar connection sections 102 at both ends are located at the two 1 / 4 points of the vehicle width.

[0053] At the same time, it can be understood that the setting of the above-mentioned chamfered surface 103 can be set and adjusted accordingly according to the actual styling requirements, chamfering requirements or structural reinforcement requirements. For example, the chamfered surface 103 can be formed at the top and bottom of the corner to achieve the optimal styling and structural reinforcement effects.

[0054] Still referring to Figure 1 As shown, as a preferred implementation form, the front bulkhead assembly of this embodiment further includes a front windshield lower cross member 5 provided at the top of the front bulkhead. The middle part of the front windshield lower cross member 5 in the left-right direction arches upward in the up-down direction of the vehicle. Thus, the characteristic of large arch structural strength can be utilized to improve the structural strength of the upper part of the front bulkhead.

[0055] And it can be understood that the top of the above-mentioned front bulkhead should also be set as an arch to facilitate connection with the front windshield lower cross member 5. Based on this, the structural strength of the front bulkhead can be improved again, and further the structural strength of the front bulkhead assembly can be effectively improved, and the vibration response sensitivity can be reduced.

[0056] For noise reduction requirements, in the specific structure of the front bulkhead of this embodiment, referring to Figure 3 As shown, as a preferred setting form, a reinforcing plate 6 connected to the front windshield lower cross member 5 is provided on the side of the front bulkhead facing the driver's cabin. The reinforcing plate 6 is provided directly opposite the driver's seat and extends downward from the front windshield lower cross member 5 to the bottom of the main board body 201.

[0057] With such a setting, not only can the structural strength of the side of the front bulkhead facing the passenger compartment be improved, but also a differential design of the structural strength can be achieved with the part of the front bulkhead facing the co-pilot's seat, so that the left and right sides of the front bulkhead have different vibration frequencies, avoiding resonance, reducing the vibration response sensitivity, and thus achieving the purpose of reducing the interior noise of the vehicle and improving the overall NVH performance of the vehicle.

[0058] In addition, in this embodiment, as another preferred exemplary structure, a reinforcing protrusion protruding towards the front engine compartment is provided on the main board body 201 to improve the structural strength of the main board body 201, reduce the vibration response sensitivity, and further improve the noise reduction effect of the front bulkhead assembly on the passenger compartment.

[0059] Specifically, as a preferred setting form, the reinforcing protrusion in this embodiment is in a rectangular, L-shaped or cross-shaped form, so as to facilitate the layout on the main board body 201 while ensuring its good structural strengthening requirements.

[0060] And as a preferred implementation form, still as Figure 4 shown, in this embodiment, the reinforcing protrusion includes a first protrusion 2011 disposed opposite the driver's seat, and a second protrusion 2012 disposed opposite the co-pilot's seat, and a third protrusion 2013 protruding towards the front engine compartment is formed on the first protrusion 2011, and a fourth protrusion 2014 protruding towards the front engine compartment is formed on the second protrusion 2012.

[0061] Among them, the first protrusion 2011 and the third protrusion 2013 cooperate to improve the structural strength of the part of the main board body 201 corresponding to the driver's seat, and the second protrusion 2012 and the fourth protrusion 2014 cooperate to improve the structural strength of the part of the main board body 201 corresponding to the co-pilot's seat, and can effectively improve the structural strength of the front bulkhead assembly and reduce the vibration response sensitivity of the overall structure.

[0062] When specifically setting, the structural shapes and specific dimensions of the above-mentioned first protrusion 2011, second protrusion 2012, third protrusion 2013 and fourth protrusion 2014 can be set and adjusted accordingly according to the actual layout requirements and strengthening requirements of the front bulkhead. For example, specifically, the first protrusion 2011 can be set as a rectangle with a protrusion height of 30 mm, the second protrusion 2012 can be set as an L shape with a protrusion height of 30 mm, etc., so as to obtain the optimal structural strengthening effect.

[0063] Of course, in addition to being set as the above-mentioned rectangular, L-shaped or cross-shaped, the reinforcing protrusion in this embodiment can also be set and adjusted accordingly according to the actual layout requirements or strengthening requirements of the front bulkhead. For example, the third protrusion 2013 and the fourth protrusion 2014 in the reinforcing protrusion can be set as a horseshoe-shaped reinforcing structure.

[0064] Moreover, during specific settings, the installation positions of the above-mentioned U-shaped third protrusion 2013 and fourth protrusion 2014 can also be set and adjusted according to actual layout requirements and reinforcement needs. For example, the third protrusion 2013 can be set at the 1 / 3 point in the vehicle width direction (this 1 / 3 point is on the driver's side), and the fourth protrusion 2014 can be arranged at the 1 / 4 point in the vehicle width direction (this 1 / 4 point is on the passenger's side).

[0065] Thus, while enhancing the strength of the front panel itself, a differential design of the structural strength on the driver's side and the passenger's side can be achieved, avoiding local resonance and reducing the sensitivity of vibration and noise response.

[0066] It should also be noted that the directions such as up, down, left, right, front, and back not specified in this embodiment refer to the up, down, left, right, front, and back directions of the vehicle. The unspecified length, width, and thickness respectively refer to the relevant dimensions in the front-rear direction, left-right direction, and up-down direction of the whole vehicle.

[0067] In addition, the number of the reinforcing protrusions in this embodiment is not limited to four. For example, still referring to Figure 4 as shown, two cross-shaped protrusions are also provided on the main board body 201 near the second protrusion 2012. The protruding height of the two cross-shaped protrusions can be preferably set to 8 mm to facilitate cooperation with other protrusions to achieve the optimal structural reinforcement effect. In addition to protruding towards the front engine compartment side, the protruding direction of the reinforcing protrusion can also protrude towards the passenger compartment side according to actual layout requirements.

[0068] In addition, in this embodiment, to further enhance the structural strength of the weak position of the front panel, as Figure 1 shown, a first reinforcing member 13 can also be provided on the main board body 201 at the bottom of the middle section 101. Specifically, the first reinforcing member 13 can be set to have a hemispherical structure as a whole, and the number and arrangement position of the first reinforcing member 13 can be set and adjusted accordingly according to actual reinforcement needs. For example, specifically, two are provided at the two 1 / 3 points of the vehicle width.

[0069] Meanwhile, continuing to refer to Figure 3 as shown, in this embodiment, second reinforcing members 14 can also be respectively connected between the main body part 2 and the A-pillar connection parts 3 on the left and right sides to enhance the connection stability between the main body part 2 and the A-pillar connection parts 3 on both sides, and thus effectively enhance the overall structural strength of the front panel. The second reinforcing member 14 can be preferably set to be a box-shaped structure that is generally triangular as a whole to facilitate achieving a better structural reinforcement effect.

[0070] At this time, it should still be mentioned that on the basis of the A-pillar connecting portion 3 of this embodiment being inclined toward the outside of the vehicle, a first convex structure 2011 protruding toward the passenger compartment is further provided, and specifically, the first convex structure 2011 can be set to two arranged in sequence along the up-and-down direction of the whole vehicle, so as to facilitate playing a better role in structural strengthening.

[0071] Moreover, in order to achieve lightweight design in this embodiment, weight-reducing holes can also be provided on components such as the strengthening protrusion or the second strengthening member 14. For example Figure 3 as shown in, a weight-reducing hole in the shape of a "Lv" character is provided on the second strengthening member 14. Of course, for the structures of the front bulkhead assembly of this embodiment not mentioned, the relevant structural parts common in the prior art can be referred to.

[0072] For the front bulkhead assembly of this embodiment, by arranging the A-pillar connecting portion 3 to be inclined toward the outside of the vehicle, the structural strength of the front bulkhead itself can be improved, and by providing the strengthening crossbeam 1, the structural strength of the front bulkhead can be further enhanced, so that the front bulkhead assembly has a high structural strength, and the vibration response sensitivity can be reduced, and the NVH performance of the whole vehicle can be improved.

[0073] Embodiment Two

[0074] This embodiment relates to a vehicle, and the front bulkhead assembly in Embodiment One is adopted on this vehicle. And, specifically in implementation, as a preferred implementation form, as Figures 5 to 10 shown, the bottom end of the front bulkhead is connected to the front floor assembly, and the front floor assembly includes a middle channel 7 and front floors 8 respectively arranged on the left and right sides of the middle channel 7.

[0075] Wherein, a connecting strengthening plate 9 is provided between the top of the front end of the middle channel 7 and the front bulkhead, and a cavity is formed between the connecting strengthening plate 9 and the middle channel 7, and a first bracket 10 supported between the middle channel 7 and the connecting strengthening plate 9 is provided in the cavity.

[0076] With such an arrangement, the connection area between the middle channel 7 and the front bulkhead can be increased through the connecting strengthening plate 9 to improve the connection strength between the middle channel 7 and the front bulkhead and reduce the vibration response sensitivity between the two. Then, by utilizing the characteristic of the large structural strength of the cavity structure to improve the connection strength between the two. At the same time, the setting of the first bracket 10 can also improve the connection strength between the middle channel 7 and the front bulkhead, and further make the connection between the middle channel 7 and the front bulkhead have good connection stability.

[0077] When specifically setting, the arrangement position and structural shape of the above-mentioned first bracket 10 can be correspondingly set and adjusted according to the actual structural strengthening requirements. For example, it can be specifically set in the middle area of the connecting strengthening plate 9 in the front-rear direction of the whole vehicle and in the shape of a "Ji" character, so as to facilitate obtaining a better structural strengthening effect.

[0078] Similarly, to improve the structural strength of the weak position at the rear side of the middle channel 7, as a preferred setting form, in this embodiment, a second bracket 11 is provided between the middle channel 7 and the front floor 8. Specifically, when setting, the second bracket 11 can preferably be set in an L shape to facilitate the connection with the middle channel 7 and the front floor 8. Moreover, the specific shape, size, and arrangement position of the second bracket 11 can also be correspondingly set and adjusted according to the actual structural strengthening requirements of the middle channel 7;

[0079] For example, the width of the second bracket 11 in the front-rear direction of the whole vehicle can be specifically set to 64 mm, the thickness in the up-down direction of the whole vehicle can be specifically set to 1 mm, and the second bracket 11 can be specifically set into two groups located at the 1 / 3 point and 1 / 4 point positions at the rear side of the middle channel 7. The distance between the two groups is 73 mm, and each group includes two second brackets 11 located on both sides of the middle channel 7 in the left-right direction of the whole vehicle, etc.

[0080] It can be understood that by setting the second bracket 11, the effect of precisely strengthening the weak position of the middle channel 7 can be achieved, which is beneficial to reducing the usage amount and weight while strengthening the structure, reducing costs, and facilitating lightweighting.

[0081] It is worth mentioning that when specifically setting the connection reinforcement plate 9 in this embodiment, its structural shape and size can be correspondingly set and adjusted according to the actual connection strength requirements between the middle channel 7 and the front apron. For example, it can be specifically set in a W shape to utilize the characteristic of the large structural strength of the W shape to improve its own strength and the connection strength between the middle channel 7 and the front apron. Moreover, the thickness of the connection reinforcement plate 9 can also be preferably set to 1 mm to facilitate having the advantages of both structural strengthening and lightweighting.

[0082] Of course, in this embodiment, considering strengthening the structural strength of the connection reinforcement plate 9, corresponding strengthening structures can also be set on the connection reinforcement plate 9 according to the actual structural strength requirements of the connection reinforcement plate 9, for example Figure 6 As shown in, in the front-rear direction of the whole vehicle, a concave portion 901 and a convex portion 902 are arranged in sequence on the connection reinforcement plate 9. The concave portion 901 extends in the front-rear direction of the whole vehicle and occupies the front 1 / 3 section of the connection reinforcement plate 9. The convex portion 902 extends in the front-rear direction of the whole vehicle and occupies the remaining 2 / 3 section of the connection reinforcement plate 9.

[0083] Among them, as a preferred implementation form, the concave portion 901 is formed by the connection reinforcement plate 9 being concave inward towards the vehicle lower part, the convex portion 902 is formed by the connection reinforcement part protruding upward in the up-down direction of the whole vehicle, and the depth of the concave portion 901 in the up-down direction of the whole vehicle is 5 mm, the width in the left-right direction of the whole vehicle is 34 mm, the height of the convex portion 902 in the up-down direction of the whole vehicle is 12 mm, and the width in the left-right direction of the whole vehicle is 70 mm to facilitate obtaining a better structural strengthening effect.

[0084] In addition, in this embodiment, considering the overall structural strength requirements of the center tunnel 7, as a preferred implementation form, a third reinforcing member 15 for connecting the torsion boxes 16 on the left and right sides is provided at the bottom of the center tunnel 7. Specifically, the third reinforcing member 15 is located at the front 1 / 4 point of the center tunnel 7. It can be in a box-like structure and is arched in the vehicle's front-rear direction towards the rear of the vehicle as a whole, so as to utilize the characteristics of the large strength of the box-like structure and the arched structure to enhance the structural strength of the bottom of the center tunnel 7.

[0085] In addition, it is worth mentioning that the structural shape and size design of the center tunnel 7 in this embodiment can be set and adjusted accordingly according to the actual layout requirements, structural strengthening requirements, and lightweight requirements of the center tunnel 7. For example, the center tunnel 7 can be specifically set to be roughly in a shape like the Chinese character 'ji', and its length in the vehicle's front-rear direction is set to 1585 mm, the width of the front 1 / 3 section from front to back is set to 295 mm, and the width of the remaining 2 / 3 section is set to 361 mm.

[0086] At the same time, a strengthening structure can also be set on the center tunnel 7 to enhance the structural strength and reduce the vibration response sensitivity. For example, a first concave pit structure 701 in the shape of a rectangle with a width of 70 mm and a depth of 10 mm is set on it, and the first concave pit structure 701 runs through the center tunnel 7 in the front-rear direction. Of course, the size of the first concave pit structure 701 here can also be set and adjusted according to the actual structural strengthening requirements and layout requirements.

[0087] Moreover, in this embodiment, in addition to setting the above-mentioned concave pit structure on the center tunnel 7, other strengthening structures can still be set on the 2 / 3 section at the rear of the center tunnel 7 according to the actual strengthening requirements, for example Figure 7 As shown in, a second concave pit structure 702 and a second convex structure 703 are also provided on the 2 / 3 section at the rear of the center tunnel 7, and the arrangement form and size of the second concave pit structure 702 and the second convex structure 703 can be set and adjusted accordingly according to the actual structural strengthening requirements.

[0088] For example, a second concave pit structure 702 and a second convex structure 703 are set in the middle area of the 2 / 3 section at the rear of the center tunnel 7. The second concave pit structure 702 can be specifically set to have a length of 92 mm, a width of 54 mm, and a depth of 8 mm, and the second convex structure 703 is set to have a length of 37 mm, a width of 30 mm, and a height of 8 mm.

[0089] Furthermore, a plurality of second concave structures 702 can be respectively arranged on both sides of the rear 2 / 3 section of the middle channel 7 in the left-right direction of the whole vehicle. And based on the fact that the middle channel 7 is generally in a U-shape as a whole, it can be understood that the second concave structures 702 are located at the bending parts of the middle channel 7 itself. Visually, in the length direction of the middle channel 7, a triangular structure is formed at this position, and the high stability of the triangle can be utilized to improve the structural strength of the middle channel 7.

[0090] Of course, it should be noted that the up, down, left, right, front and rear directions not specified in this embodiment refer to the up, down, left, right, front and rear directions of the vehicle, and the unspecified length, width and thickness respectively refer to the descriptions of the relevant dimensions in the front-rear direction, left-right direction and up-down direction of the whole vehicle.

[0091] By arranging the front panel assembly in the first embodiment, the vehicle of this embodiment can enhance the structural strength of the front panel assembly, reduce the vibration response sensitivity, so as to reduce the vehicle interior noise and improve the NVH performance of the whole vehicle, and thus has good ride comfort.

[0092] 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 fall within the protection scope of the present invention.

Claims

1. A vehicle, characterized in that: The vehicle includes a front bulkhead assembly; The front bulkhead assembly includes a front bulkhead, and a reinforcing cross beam (1) provided on the side of the front bulkhead facing the front engine compartment; The front bulkhead has a main body portion (2), and A-pillar connecting portions (3) respectively provided on the left and right sides of the main body portion (2). Both sides of the A-pillar connecting portions (3) extend backward along the front-rear direction of the whole vehicle, and incline outward on the vehicle body in the left-right direction, and each side of the A-pillar connecting portion (3) is connected to the A-pillar (4) on the same side; The reinforcing cross beam (1) includes a middle section (101) provided on the main body portion (2), and A-pillar connecting sections (102) respectively provided on the two A-pillar connecting portions (3). Each side of the A-pillar connecting section (102) is connected to the A-pillar (4) on the same side; The main body portion (2) includes a main board body (201), and a floor connecting board body (202) provided at the bottom of the main board body (201); the floor connecting board body (202) extends backward along the front-rear direction of the whole vehicle, and inclines downward in the up-down direction of the whole vehicle; the middle section (101) is provided at the bottom of the main board body (201); A reinforcing protrusion protruding toward the front engine compartment is provided on the main board body (201); the reinforcing protrusion includes a first protrusion (2011) provided opposite to the driver's seat, and a third protrusion (2013) protruding toward the front engine compartment is formed on the first protrusion (2011); The bottom end of the front bulkhead is connected to the front floor assembly, and the front floor assembly includes a middle channel (7); a connecting reinforcing plate (9) is provided between the top of the front end of the middle channel (7) and the front bulkhead, and a cavity is formed between the connecting reinforcing plate (9) and the middle channel (7); a first bracket (10) is provided in the cavity and supported between the middle channel (7) and the connecting reinforcing plate (9).

2. The vehicle according to claim 1, characterized in that: A bending portion is provided between the middle section (101) and the A-pillar connecting section (102), and a chamfered surface (103) is formed at the corner of the bending portion.

3. The vehicle according to claim 1, characterized in that: The front bulkhead assembly further includes a front windshield lower cross beam (5) provided at the top of the front bulkhead, and the middle part of the front windshield lower cross beam (5) in the left-right direction arches upward along the up-down direction of the whole vehicle.

4. The vehicle according to claim 3, characterized in that: A reinforcing plate (6) connected to the front windshield lower cross beam (5) is provided on the side of the front bulkhead facing the passenger compartment. The reinforcing plate (6) is provided opposite to the driver's seat and extends downward from the front windshield lower cross beam (5) to the bottom of the main board body (201).

5. The vehicle according to claim 1, characterized in that: The reinforcing protrusion is rectangular, L-shaped or cross-shaped.

6. The vehicle according to claim 1, characterized in that: The reinforcing protrusion includes a second protrusion (2012) provided opposite to the co-driver's seat; A fourth protrusion (2014) protruding toward the front engine compartment is formed on the second protrusion (2012).

7. The vehicle according to any one of claims 1 to 6, characterized in that: The front floor assembly includes front floors (8) respectively disposed on the left and right sides of the central tunnel (7); A second bracket (11) is provided between the central tunnel (7) and the front floor (8).

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