Vehicle body framework structure and vehicle

Abstract

The utility model provides a vehicle body framework structure which comprises a side wall assembly and a top cover assembly. The top cover assembly comprises at least two top cover middle cross beams; the side wall assembly at least comprises a column B, a column C and a top edge beam; wherein the top end of the column B and the top end of the column C are both connected with the top edge beam, the top cover middle cross beams are connected with the top edge beam, one of the at least two top cover middle cross beams is aligned with the top end of the column B in the width direction of the automobile body, and the other one of the at least two top cover middle cross beams is aligned with the top end of the column C in the width direction of the automobile body. According to the vehicle body framework structure, the force transmission coherence of all connecting positions of a vehicle body can be improved, vehicle body collision stress dispersion is promoted, the vehicle collision performance is further improved, the number of connecting pieces and connecting points can be reduced, the requirement for part machining precision is lowered, meanwhile, the assembling process difficulty is simplified, and the cost is reduced. In addition, light weight of a vehicle body is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a vehicle body frame structure and a vehicle. Background Art

[0002] The body frame structure is a key part that determines the collision performance of the vehicle, which is directly related to driving safety. The common body frame structures of current vehicles include 3H type, GOA type and cage type; among them, the cage type body frame structure has obvious advantages in overall strength and rigidity compared with the first two structures.

[0003] Although the common cage-type body frame can form a closed frame in structure, due to the misalignment between various components such as roof beams and side pillars, the force transmission path of the body is long and single, which affects the improvement of the collision performance of the whole vehicle. In addition, since the misaligned connection requires the arrangement of more sheet metal connectors and fixing points, there are disadvantages such as high part processing accuracy requirements, complex assembly process and poor structural integrity, which is not conducive to the lightweight index of the body. Utility Model Content

[0004] The embodiment of the utility model provides a vehicle body frame structure, aiming to improve the integrity and collision performance of the vehicle body frame structure and reduce the processing accuracy requirements and assembly process difficulty of vehicle body frame parts.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: in the first aspect, a body frame structure is provided, including a side panel assembly and a top cover assembly; the top cover assembly includes at least two top cover middle cross beams; the side panel assembly includes at least a B-pillar, a C-pillar, and a top side beam; wherein the top end of the B-pillar and the top end of the C-pillar are both connected to the top side beam, each top cover middle cross beam is respectively connected to the top side beam, and at least one of the two top cover middle cross beams is aligned with the top end of the B-pillar along the width direction of the body, and the other of the at least two top cover middle cross beams is aligned with the top end of the C-pillar along the width direction of the body.

[0006] In combination with the first aspect, in a possible implementation, first support ribs are provided on both front and rear sides of a middle cross beam of the top cover aligned with the top end of the B-pillar, and the first support ribs extend obliquely and are connected to the top side beams.

[0007] In some embodiments, the side panel assembly also includes an A-pillar and a D-pillar; the roof assembly also includes a front roof beam and a rear roof beam; wherein the top end of the A-pillar and the front roof beam are both connected to the front end of the top side beam, and the top end of the D-pillar and the rear roof beam are both connected to the rear end of the top side beam.

[0008] In some embodiments, a second supporting rib is provided on the rear side of the front cross beam of the roof cover, and the second supporting rib extends obliquely rearward and is connected to the top side beam.

[0009] In combination with the first aspect, in a possible implementation, the front end of the top side beam has an extended section, and the extended section extends toward the front and bottom to form an A-pillar.

[0010] For example, the top side beam and the A-pillar are integrally formed equal-section hollow profiles, and the inner cavity of the equal-section hollow profile forms a plurality of hollow cavities based on the separation support ribs.

[0011] In some embodiments, a third support rib is connected below the rear end of the top side beam, and the third support rib extends obliquely toward the rear and downward and is connected to the D-pillar.

[0012] Exemplarily, the vehicle body frame structure further includes a longitudinal beam, which is connected to the bottom of the side panel assembly, and the longitudinal beam extends forward from the lower end of the C-pillar to the front of the side panel assembly.

[0013] For example, fourth support ribs are provided at both the front and rear sides of the lower end of the B-pillar, and the fourth support ribs extend downwardly and are connected to the longitudinal beam.

[0014] The beneficial effect of the vehicle body frame structure provided by the utility model is that compared with the prior art, in the vehicle body frame structure of the utility model, the top ends of the B-pillar and the C-pillar are respectively aligned with one of the middle cross beams of the roof and connected to the top side beams, so that a straight force transmission path can be formed between the middle cross beam of the roof and the B-pillar and the C-pillar, which can not only improve the force transmission continuity of various connection positions of the vehicle body, promote the dispersion of the collision force of the vehicle body, and thus improve the collision performance of the vehicle, but also reduce the number of connecting parts and connection points, reduce the requirements for parts processing accuracy, and simplify the difficulty of the assembly process. In addition, it is also conducive to lightweighting of the vehicle body.

[0015] In a second aspect, an embodiment of the utility model further provides a vehicle, comprising the above-mentioned vehicle body frame structure.

[0016] The beneficial effect of the vehicle provided by the utility model is that compared with the prior art, the vehicle of the utility model adopts the above-mentioned body frame structure, which can not only improve the force transmission continuity of various connection positions of the body, promote the dispersion of body collision force, and thus improve the vehicle collision performance, but also reduce the number of connecting parts and connection points, reduce the requirements for parts processing accuracy, and simplify the difficulty of the assembly process. It is also conducive to lightweighting the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional structural diagram of a vehicle body frame structure provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of a force transmission path (shown by a dotted line in the figure) of a vehicle body frame structure provided by an embodiment of the utility model;

[0019] Figure 3This is a schematic diagram of the structure of the uniform cross-section profile used in the embodiment of the utility model;

[0020] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0021] In the figure: 10, side panel assembly; 11, A-pillar; 12, B-pillar; 13, C-pillar; 14, D-pillar; 15, top side beam; 151, partition support rib; 16, third support rib; 17, fourth support rib; 20, top cover assembly; 21, middle cross beam of top cover; 22, front cross beam of top cover; 23, rear cross beam of top cover; 24, first support rib; 25, second support rib; 30, longitudinal beam. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on another element or indirectly on another element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application 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 on the present application. The terms "first", "second", "third", and "fourth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] It should be understood that in the vehicle field, A-pillar, B-pillar, C-pillar and D-pillar are all professional terms. Specifically, the A-pillar refers to the connecting pillars connecting the roof and the front cabin on the left and right front sides of the vehicle body, located between the front cabin and the cockpit, and above the left and right rearview mirrors; the B-pillar is the connecting pillar located between the front and rear doors, which bears the pressure of the roof and the front and rear doors, and also serves as the installation base for the front seat belts; the C-pillar is the connecting pillar located behind the rear seats, and serves as a support for the rear doors and an installation base for the rear seat belts; the D-pillar is usually found in large vehicles such as SUVs, MPVs, travel vehicles, etc. It is the connecting pillar located at the rear end of the vehicle and is also the installation base for the rear windshield.

[0025] Please also read Figure 1and Figure 2 The vehicle frame structure provided by the utility model is now described. The vehicle frame structure includes a side panel assembly 10 and a top panel assembly 20; the top panel assembly 20 includes at least two top panel middle cross beams 21; the side panel assembly 10 includes at least a B-pillar 12, a C-pillar 13, and a top side beam 15; wherein the top ends of the B-pillar 12 and the C-pillar 13 are both connected to the top side beams, each top panel middle cross beam 21 is respectively connected to the top side beam 15, and at least one of the two top panel middle cross beams 21 is aligned with the top end of the B-pillar 12 along the width direction of the vehicle body, and at least the other of the two top panel middle cross beams 21 is aligned with the top end of the C-pillar 13 along the width direction of the vehicle body.

[0026] It should be noted that, in the present embodiment, the top side beam 15 may be an aluminum profile or a sheet metal beam. Considering the lightweight index of the vehicle body, the top side beam 15 may preferably be an extruded aluminum profile with a hollow structure.

[0027] In this embodiment, two top cover middle cross beams 21 can be used and aligned with the top ends of the B-pillar 12 and the C-pillar 13 respectively in the width direction of the vehicle body. The number of top cover middle cross beams 21 can also be increased on the basis of setting the top cover middle cross beams 21 at the above two positions. Of course, considering the lightweight index of the vehicle body, it is preferred to use two top cover middle cross beams 21 to correspond to the positions of the B-pillar 12 and the C-pillar 13 respectively; a straight force transmission path can be formed between the aligned B-pillar 12 / C-pillar 13 and the top cover middle cross beam 21 in the width direction of the vehicle body, which can not only shorten the force transmission path, but also reduce the number of sheet metal connectors and connection points between the B-pillar 12 / C-pillar 13 and the top cover middle cross beam 21, thereby reducing the requirements for parts processing accuracy and the difficulty of assembly process, and is also conducive to achieving the lightweight index of the vehicle body.

[0028] Compared with the prior art, the vehicle body frame structure provided in this embodiment has the top ends of the B-pillar 12 and the C-pillar 13 aligned with one of the roof middle cross beams 21 and connected to the top side beam 15, so that a straight force transmission path can be formed between the roof middle cross beam 21 and the B-pillar 12 and the C-pillar 13; through the above-mentioned straight force transmission paths, not only can the force transmission continuity of various connection positions of the vehicle body be improved, the force dispersion of the vehicle body collision is promoted, and the collision performance of the vehicle is improved, but also the number of connecting parts and connection points can be reduced, the requirements for parts processing accuracy are reduced, and the difficulty of assembly process is simplified, and it is also conducive to lightweighting of the vehicle body.

[0029] In some embodiments, see Figure 2, both front and rear sides of the top cover middle cross beam 21 aligned with the top of the B-pillar 12 are provided with first support ribs 24, which extend obliquely and are connected to the top side beam 15. Two first support ribs 24 form triangular supports on both sides of the top cover middle cross beam 21, respectively. On the basis of the top cover middle cross beam 21 being able to directly transmit force to the B-pillar 12 aligned with it, it can also transmit force to the top side beam 15 through the two first support ribs 24, thereby forming a "Chuan"-shaped dispersed force transmission path, thereby improving the bending and torsional rigidity and anti-top pressure deformation capability at the connection position between the top cover middle cross beam 21 and the B-pillar 12.

[0030] In some embodiments, such as Figure 1 As shown, the side panel assembly 10 also includes an A-pillar 11 and a D-pillar 14; the roof assembly 20 also includes a roof front cross beam 22 and a roof rear cross beam 23; wherein, the top end of the A-pillar 11 and the roof front cross beam 22 are both connected to the front end of the top side beam 15, and the top end of the D-pillar 14 and the roof rear cross beam 23 are both connected to the rear end of the top side beam 15.

[0031] It should be explained that the top end of the A-pillar 11, the front end of the top side beam 15, and the end of the roof front cross beam 22 are connected at one point. As a result, the force of the roof front cross beam 22 can be directly dispersed and transmitted to the top side beam 15 and the A-pillar 11. Similarly, the force of the A-pillar 11 can also be directly dispersed and transmitted to the top side beam 15 and the roof front cross beam 22. The force of the top side beam 15 can also be directly dispersed and transmitted to the A-pillar 11 and the roof front cross beam 22, thereby reducing the single body force by dispersing the collision force.

[0032] Similarly, the top end of the D-pillar 14, the rear end of the top side beam 15, and the end of the roof rear cross beam 23 are connected at one point. Therefore, the force applied to any position of the D-pillar 14, the top side beam 15, and the roof rear cross beam 23 can be directly dispersed and transmitted to two outer positions, thereby reducing the collision energy on any single unit.

[0033] Based on the above structural arrangement, the front cross beam 22 of the roof is connected to the front end of the top side beam 15 and the top connection position of the A-pillar 11, and a straight force transmission path can be formed between the three; the rear cross beam 23 of the roof is connected to the rear end of the top side beam 15 and the top connection position of the D-pillar 14, and a straight force transmission path is also formed between the three; combined with the straight force transmission path formed by the two middle cross beams 21 of the roof being aligned with the B-pillar 12 and the C-pillar 13 respectively, the body frame structure provided in this embodiment forms a cage-type frame with a completely closed force transmission path, which not only improves the structural integrity, but also can improve the body collision performance by shortening the force transmission path and dispersing the force.

[0034] In some embodiments, see Figure 2A second support rib 25 is provided at the rear side of the front cross beam 22 of the roof, and the second support rib 25 extends obliquely rearward and is connected to the top side beam 15. The front end of the front cross beam 22 of the roof and the top side beam 15 form a triangular connection structure through the second support rib 25, and the stability of the triangular connection structure is used to improve the bending and torsional rigidity and anti-top pressure deformation ability of the front end of the body frame. At the same time, the second support rib 25 can also form a force transmission path between the front cross beam 22 of the roof and the top side beam 15, thereby increasing the number of force transmission paths, which is more conducive to dispersing collision force and improving the anti-collision performance of the body.

[0035] As a modified implementation of the top side beam 15, please refer to Figures 1 to 4 The front end of the top side beam 15 has an extended section, and the extended section extends toward the front and bottom to form the A-pillar 11. Here, the method of extending the front end of the top side beam 15 to form the A-pillar 11 can not only improve the structural integrity, but also reduce the number of connecting parts and fasteners, thereby reducing the difficulty of processing and assembly, and is also conducive to lightweighting of the body frame.

[0036] Specifically, in this embodiment, the top side beam 15 and the A-pillar 11 are integrally formed equal-section hollow profiles. The use of equal-section hollow profiles can avoid the force mutation phenomenon caused by the change in the size of the force-bearing surface on the collision force transmission path, thereby improving the force transmission stability and safety. At the same time, the use of equal-section hollow profiles not only has high structural strength, but also can reduce the weight and end face size of the top side beam 15 to a certain extent, thereby reducing space occupation, which is conducive to improving the interior space and lightweighting the vehicle body.

[0037] For example, Figure 4 As shown, the inner cavity of the above-mentioned equal-section hollow profile forms multiple hollow cavities based on the separation support ribs 151. The multi-cavity structure can not only improve the structural strength and rigidity, but also further reduce its cross-sectional area under the premise of meeting the rigidity and strength requirements, thereby further reducing space occupancy and promoting the improvement of the interior space of the vehicle.

[0038] Optionally, the above-mentioned hollow profile with equal cross-section is an extruded aluminum profile, and the separation support ribs 151 are cross ribs integrally formed in the inner cavity thereof.

[0039] For some possible implementations, see Figure 2 A third support rib 16 is connected to the lower rear end of the top side beam 15, and the third support rib 16 extends obliquely toward the rear and lower side and is connected to the D-pillar 14. The third support rib 16 forms a triangular reinforcement structure between the rear end of the top side beam 15 and the D-pillar 14, which can improve the structural strength and rigidity of the rear part of the vehicle body frame, thereby improving the anti-collision performance of the vehicle body.

[0040] It should be noted that, in some embodiments, see Figure 1The vehicle body frame structure further includes a longitudinal beam 30, which is connected to the side panel assembly 10, and the longitudinal beam 30 extends forward from the lower end of the C-pillar 13 to the front of the side panel assembly 10. The longitudinal beam 30 serves as the bottom connection base of the side panel assembly 10, and the longitudinal beam 30 extends forward from the lower end of the C-pillar 13 to reserve sufficient space for the rear wheels. The front end of the longitudinal beam 30 extends to the front of the side panel assembly 10 and extends into the front cabin, thereby improving the connection stability between the front cabin and the cockpit.

[0041] On the basis of the above, in this embodiment, fourth support ribs 17 are provided on both sides of the lower end of the B-pillar 12, and the fourth support ribs 17 extend downward and are connected to the longitudinal beam 30. The two fourth support ribs 17 form a triangular connection structure with the longitudinal beam 30 on both sides of the lower end of the B-pillar 12, which can not only improve the structural strength and modal characteristics, but also disperse the force to the longitudinal beam 30 through the two fourth support ribs 17, thereby forming a "Chuan"-shaped dispersed force transmission path, thereby reducing the intrusion deformation of the B-pillar 12 when a side collision and a column collision occur, and ensuring the safety of the driver and passengers.

[0042] Based on the same inventive concept, combined Figures 1 to 4 It is understood that an embodiment of the present application also provides a vehicle, including the above-mentioned body frame structure.

[0043] Compared with the prior art, the vehicle provided by the utility model adopts the above-mentioned body frame structure, which can not only improve the force transmission continuity of various connection positions of the body, promote the dispersion of body collision force, and thus improve the vehicle collision performance, but also reduce the number of connecting parts and connection points, reduce the requirements for parts processing accuracy, and simplify the difficulty of assembly process. It is also conducive to lightweight body.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The vehicle body frame structure is characterized by: The invention comprises a side panel assembly (10) and a top cover assembly (20); the top cover assembly (20) comprises at least two top cover middle cross beams (21); the side panel assembly (10) comprises at least a B-pillar (12), a C-pillar (13), and a top side beam (15); wherein the top ends of the B-pillar (12) and the C-pillar (13) are both connected to the top side beams, and each of the top cover middle cross beams (21) is respectively connected to the top side beam (15), and at least one of the two top cover middle cross beams (21) is aligned with the top end of the B-pillar (12) along the width direction of the vehicle body, and at least another of the two top cover middle cross beams (21) is aligned with the top end of the C-pillar (13) along the width direction of the vehicle body.

2. The vehicle body frame structure according to claim 1, characterized in that: First support ribs (24) are provided on both the front and rear sides of the top cover middle cross beam (21) aligned with the top end of the B-pillar (12), and the first support ribs (24) extend obliquely and are connected to the top side beam (15).

3. The vehicle body frame structure according to claim 1, characterized in that: The side enclosure assembly (10) further includes an A-pillar (11) and a D-pillar (14); the roof assembly (20) further includes a roof front cross beam (22) and a roof rear cross beam (23); wherein the top end of the A-pillar (11) and the roof front cross beam (22) are both connected to the front end of the top side beam (15), and the top end of the D-pillar (14) and the roof rear cross beam (23) are both connected to the rear end of the top side beam (15).

4. The vehicle body frame structure according to claim 3, characterized in that: A second supporting rib (25) is provided on the rear side of the front cross beam (22) of the roof, and the second supporting rib (25) extends obliquely rearward and is connected to the top side beam (15).

5. The vehicle body frame structure according to claim 3, characterized in that: The front end of the top side beam (15) has an extended section, and the extended section extends toward the front and bottom to form the A-pillar (11).

6. The vehicle body frame structure according to claim 5, characterized in that: The top side beam (15) and the A-pillar (11) are integrally formed hollow profiles of equal cross-section, and the inner cavity of the hollow profile of equal cross-section forms a plurality of hollow cavities based on the separation support ribs (151).

7. The vehicle body frame structure according to claim 3, characterized in that: A third support rib (16) is connected below the rear end of the top side beam (15); the third support rib (16) extends obliquely toward the rear and below and is connected to the D-pillar (14).

8. The vehicle body frame structure according to any one of claims 1 to 7, characterized in that: The vehicle body frame structure also includes a longitudinal beam (30), the longitudinal beam (30) being connected to the bottom of the side enclosure assembly (10), and the longitudinal beam (30) extending forward from the lower end of the C-pillar (13) to the front of the side enclosure assembly (10).

9. The vehicle body frame structure according to claim 8, characterized in that: Fourth support ribs (17) are provided at both the front and rear sides of the lower end of the B-pillar (12), and the fourth support ribs (17) extend downwardly and are connected to the longitudinal beam (30).

10. A vehicle, characterized in that It comprises a vehicle body frame structure as described in any one of claims 1 to 9.

Images