Side wall reinforcing structure and vehicle

Abstract

The utility model provides a side wall reinforcing structure and a vehicle. The side wall reinforcing structure comprises an A column reinforcing beam arranged in an A column and a B column reinforcing beam arranged in a B column, and the A column reinforcing beam and the B column reinforcing beam are each of a hollow tubular structure. The A column reinforcing beam extends in the length direction of the A column, the B column reinforcing beam extends in the length direction of the B column, and the rear end of the A column reinforcing beam and the top end of the B column reinforcing beam are connected at the top of the B column. According to the side wall reinforcing structure, the A column reinforcing beam and the B column reinforcing beam with the closed-loop-shaped sections are arranged in the inner cavity of the A column and the inner cavity of the B column respectively, the rear end of the A column reinforcing beam and the top end of the B column reinforcing beam are connected together at the junction of the A column and the B column, and therefore the structural strength of the A column and the structural strength of the B column can be effectively improved; and therefore, the safety of the column A in coping with direct collision and small offset collision and the safety of the column B in coping with vehicle top pressure are enhanced, and the structural performance of the column A and the column B in the side wall of the vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body structures, and in particular to a side panel reinforcement structure. In addition, the utility model also relates to a vehicle. Background Art

[0002] In recent years, with the continuous development of automobile lightweight technology at home and abroad, and the increasingly stringent requirements for automobile collision safety, manufacturers have continuously increased their requirements for vehicle safety performance.

[0003] When a vehicle collides, it is easy to cause damage to the occupants. During the development of the vehicle body, it is necessary to analyze and design the vehicle body structure to reduce the damage to the occupants caused by external impact when an accident occurs. Among them, the strength performance of the A-pillar on the side of the vehicle has a huge impact on the head-on collision and small offset collision of the car, and the strength performance of the B-pillar has a huge impact on the top pressure performance of the vehicle body.

[0004] Traditional A-pillars and B-pillars are mostly equipped with reinforcement plates inside to improve the strength of the beam body; however, the reinforcement plate method has disadvantages such as low strength and poor safety. Among them, the reinforcement plates in the A-pillar assembly are mostly stamped sheet parts with complex structures. Their structures are welded from multiple layers of plates, with a large number of parts, low rigidity, unstable structural performance, and a large overall weight. The reinforcement plates in the B-pillar are also stamped sheet parts, which also have complex structures, a large number of parts, heavy weight, low rigidity, unstable structures, and other problems. Moreover, they are usually welded from multiple layers of plates, which easily cause welding spatter during welding, affecting the processing and assembly quality. Utility Model Content

[0005] In view of this, the utility model aims to provide a side panel reinforcement structure to improve the structural performance of the A-pillar and the B-pillar in the side panel of the vehicle.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] A side wall reinforcement structure, comprising an A-pillar reinforcement beam arranged inside the A-pillar, and a B-pillar reinforcement beam arranged inside the B-pillar, wherein the A-pillar reinforcement beam and the B-pillar reinforcement beam both adopt a hollow tubular structure;

[0008] The A-pillar reinforcement beam is arranged to extend along the length direction of the A-pillar, the B-pillar reinforcement beam is arranged to extend along the length direction of the B-pillar, and the rear end of the A-pillar reinforcement beam and the top end of the B-pillar reinforcement beam are connected together at the top position of the B-pillar.

[0009] Furthermore, the A-pillar reinforcement beam and the B-pillar reinforcement beam are both made of hot-formed steel.

[0010] Furthermore, the wall thickness of the A-pillar reinforcement beam and the B-pillar reinforcement beam are both between 1.2 mm and 2.0 mm.

[0011] Furthermore, the A-pillar reinforcement beam and the B-pillar reinforcement beam are respectively fixedly connected to the A-pillar inner plate of the A-pillar and the B-pillar inner plate of the B-pillar through connecting brackets.

[0012] Furthermore, the connecting bracket includes an upper bracket arranged at the top end of the B-pillar reinforcement beam, a middle bracket arranged at the middle of the B-pillar reinforcement beam, and a lower bracket arranged at the bottom end of the B-pillar reinforcement beam.

[0013] Furthermore, a first fixing groove and a second fixing groove are formed on the upper bracket, and the rear end of the A-pillar reinforcement beam and the top end of the B-pillar reinforcement beam are respectively inserted into the first fixing groove and the second fixing groove.

[0014] Furthermore, a reinforcing protrusion is formed at the bottom of the second fixing groove, and a groove is formed on the top side wall of the B-pillar reinforcement beam corresponding to the reinforcing protrusion; as the B-pillar reinforcement beam is inserted into the second fixing groove, the reinforcing protrusion abuts against the inner wall of the groove.

[0015] Furthermore, the A-pillar reinforcement beam includes a front section and a rear section connected in sequence front to back, the cross section of the front section is a pentagon, the cross section of the rear section is a quadrilateral, and the connection portion between the front section and the rear section is gradually transitioned.

[0016] Furthermore, the B-pillar reinforcement beam includes an upper section, a middle section and a lower section which are connected in sequence from top to bottom, the cross-section of the upper section is rectangular, the cross-section of the middle section is hexagonal, the cross-section of the lower section is circular, and the connecting parts of the upper section and the middle section, and the middle section and the lower section are gradually transitioned.

[0017] Compared with the prior art, the utility model has the following advantages:

[0018] The side enclosure reinforcement structure of the present invention can effectively improve the structural strength of the A-pillar and the B-pillar, thereby enhancing the safety of the A-pillar in coping with head-on collisions and small offset collisions of vehicles and the safety of the B-pillar in coping with vehicle top pressure conditions, and is beneficial to improving the structural performance of the A-pillar and the B-pillar in the vehicle side enclosure.

[0019] At the same time, since both the A-pillar reinforcement beam and the B-pillar reinforcement beam adopt a hollow tubular structure, they not only have good structural performance but also have a light overall weight. Compared with the existing structural form of multiple reinforcement plates stamped and welded, it has obvious advantages such as simple structure, small number of parts, high support stiffness and light weight.

[0020] In addition, by connecting the bracket, fixing the A-pillar reinforcement beam to the A-pillar inner panel and fixing the B-pillar reinforcement beam to the B-pillar inner panel, the problem of inconvenient connection between the tubular beam body and the A-pillar inner panel or the B-pillar inner panel can be solved.

[0021] Another object of the present invention is to provide a vehicle, wherein the vehicle adopts the side wall reinforcement structure of the present invention. The vehicle of the present invention has the technical advantages possessed by the above-mentioned side wall reinforcement structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute 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. The directional terms such as front and back, top and bottom involved therein are only used to indicate relative positional relationships and do not constitute improper limitations on the present invention. In the accompanying drawings:

[0023] Figure 1 It is a schematic diagram of the overall structure of the side enclosure reinforcement structure according to an embodiment of the utility model;

[0024] Figure 2 It is a schematic diagram of the structure of each reinforcement component in the side enclosure reinforcement structure according to an embodiment of the utility model;

[0025] Figure 3 for Figure 2 An exploded view of the components shown in;

[0026] Figure 4 This is a schematic structural diagram of the A-pillar reinforcement beam according to an embodiment of the utility model;

[0027] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure of the part indicated by AA;

[0028] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure of the part indicated by section BB;

[0029] Figure 7 This is a schematic structural diagram of a B-pillar reinforcement beam according to an embodiment of the utility model;

[0030] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure of the part indicated by CC in the middle;

[0031] Fig. 9 for Figure 7 Schematic diagram of the cross-sectional structure of the part indicated by DD;

[0032] Fig.10 for Figure 7Schematic diagram of the cross-sectional structure of the part indicated by EE;

[0033] Fig.11 This is a schematic diagram of the structure of the upper bracket according to an embodiment of the utility model;

[0034] Fig.12 This is a schematic diagram of the structure of the middle bracket according to an embodiment of the utility model;

[0035] Fig.13 It is a structural schematic diagram of the lower bracket described in an embodiment of the utility model.

[0036] Description of reference numerals:

[0037] 1. A-pillar; 10. A-pillar inner panel;

[0038] 2. B-pillar; 20. B-pillar inner panel;

[0039] 3. A-pillar reinforcement beam; 31. front section; 32. rear section;

[0040] 4. B-pillar reinforcement beam; 41. upper section; 410. profile groove; 42. middle section; 43. lower section;

[0041] 5. Connecting bracket; 51. Upper bracket; 510. First connecting hole; 511. First fixing groove; 512. Second fixing groove; 513. Strengthening protrusion;

[0042] 52, middle bracket; 520, third fixing slot; 521, main board; 522, first connecting ear;

[0043] 53. Lower bracket; 530. Fourth fixing groove; 531. Main body; 532. Second connecting ear; 533. Second connecting hole. DETAILED DESCRIPTION

[0044] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0045] In the description of the present invention, it should be stated that if there are terms indicating orientation or positional relationship such as "up, down, left, right, front, back, inside, outside", etc., they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. Taking the vehicle described in the present invention as an example, the orientation words such as "up, down, left, right, front, back" used in the embodiments are defined based on the up and down direction (also known as the height direction), the left and right direction (also known as the width direction) and the front and back direction (also known as the length direction) of the vehicle. Specifically, as shown in the drawings, the X direction is the front and back direction of the vehicle, wherein the side to which the arrow points is "front", and the opposite is "back". The Y direction is the left and right direction of the vehicle, wherein the side to which the arrow points is "left", and the opposite is "right". The Z direction is the up and down direction of the vehicle, wherein the side to which the arrow points is "up", and the opposite is "down". “Inside” and “outside” are defined based on the contour of the corresponding components. For example, “inside” and “outside” are defined based on the contour of a vehicle, with the side of the vehicle contour close to the middle of the vehicle being “inside” and the opposite being the case being “outside”.

[0046] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installed", "connected", "connection", and "connector" should be understood in a broad sense. For example, the connection 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, an indirect connection through an intermediate medium, or a connection between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific circumstances. The limiting terms such as "first, second, A, B, C, D" that appear in the description of the present utility model are only used to distinguish similar features of different positions, attributes or uses, so as to achieve the purpose of avoiding ambiguity and confusion in the description, and cannot be understood as indicating or implying relative importance.

[0047] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0048] Embodiment 1

[0049] This embodiment relates to a side wall reinforcement structure, which can improve the structural performance of the A-pillar 1 and the B-pillar 2 in the side wall of the vehicle; an exemplary embodiment is as follows Figure 1 , Figure 2 and Figure 3 shown.

[0050] In general, the side reinforcement structure includes an A-pillar reinforcement beam 3 disposed inside the A-pillar 1 and a B-pillar reinforcement beam 4 disposed inside the B-pillar 2, and both the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 are hollow tubular structures. The A-pillar reinforcement beam 3 is arranged along the length direction of the A-pillar 1, and the B-pillar reinforcement beam 4 is arranged along the length direction of the B-pillar 2, and the rear end of the A-pillar reinforcement beam 3 and the top end of the B-pillar reinforcement beam 4 are connected together at the top position of the B-pillar 2.

[0051] For the material of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4, it is recommended to use hot-formed steel, and use hot pressing technology to process the tubular structure reinforcement beam body. Hot-formed steel is made of high-strength steel. Processing the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 through hot pressing technology can effectively ensure the sufficient structural strength of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4. Preferably, the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 of this embodiment are both made of 22MnB5 hot-formed steel. The surface of the processed beam body can be coated with AS40 or AS150 coating, or the surface condition of the bare plate can be maintained. The hot pressing technology is adopted. The forming principle of this technology is to put the austenitized tube blank into the mold, fill it with gas, match the internal pressure and close the mold, maintain the pressure, and complete the molding. There is no problem of material thinning, the molded part has no weak area, and has good structural performance.

[0052] Based on the performance of high-strength steel, the wall thickness of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 is preferably set between 1.2 mm and 2.0 mm; this not only ensures sufficient structural strength, but also makes the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 have obvious lightweight advantages. In specific implementation, different wall thickness specifications such as 1.2 mm, 1.5 mm, 1.7 mm or 2.0 mm can be used.

[0053] It should be noted that the A-pillar 1 includes an A-pillar inner plate 10, which is buckled with the side reinforcement plate to form an A-pillar chamber, and the A-pillar reinforcement beam 3 is arranged in the A-pillar chamber; similarly, the B-pillar 2 includes a B-pillar inner plate 20, which is buckled with the side reinforcement plate to form a B-pillar chamber, and the B-pillar reinforcement beam 4 is arranged in the B-pillar chamber. In order to well fix the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4, in this embodiment, the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 are respectively fixed to the A-pillar inner plate 10 of the A-pillar 1 and the B-pillar inner plate 20 of the B-pillar 2 through the connecting bracket 5. By connecting the bracket 5, the A-pillar reinforcement beam 3 is fixed to the A-pillar inner plate 10, and the B-pillar reinforcement beam 4 is fixed to the B-pillar inner plate 20, which can solve the problem of inconvenient connection between the tubular beam body and the A-pillar inner plate 10 or the B-pillar inner plate 20. In specific implementation, the connecting bracket 5 used to fix the A-pillar reinforcement beam 3 can be welded to the A-pillar inner plate 10, and the connecting bracket 5 used to fix the B-pillar reinforcement beam 4 can be welded to the B-pillar inner plate 20. Each connecting bracket 5 can be in a form similar to a clamp to hold the beam body tightly to fix the beam body.

[0054] The cross-sectional shapes of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 can of course be flexibly set; they can be set to be square, circular, irregular polygonal, etc. Figure 4 , Figure 5 and Figure 6 As shown, in this embodiment, the A-pillar reinforcement beam 3 includes a front section 31 and a rear section 32 connected in sequence, the cross section of the front section 31 is a pentagon, the cross section of the rear section 32 is a quadrilateral, and the connection portion of the front section 31 and the rear section 32 is gradually transitioned. The A-pillar reinforcement beam 3 is designed with two different cross sections, which is convenient for assembly with the surrounding parts of the vehicle body and ensuring the electrophoresis gap, while also ensuring the overall strength of the part; if a single cross section is used, there is a risk of affecting the assembly of the parts and poor electrophoresis, and it is easy to reduce the overall strength of the part. The length range of the A-pillar reinforcement beam 3 can be set to 1300mm~1800mm, and the cross-sectional change rate is 0-20%, which is easier to meet the vehicle body design requirements.

[0055] like Figures 7 to 10 As shown, the B-pillar reinforcement beam 4 of this embodiment includes an upper section 41, a middle section 42 and a lower section 43 connected in sequence from top to bottom, the cross section of the upper section 41 is rectangular, the cross section of the middle section 42 is hexagonal, the cross section of the lower section 43 is circular, and the connection parts of the upper section 41 and the middle section 42, and the middle section 42 and the lower section 43 are gradually transitioned. The length range of the A-pillar reinforcement beam 3 can be set to 300mm to 1000mm, and the cross-sectional change rate is 0-20%, which is easier to meet the vehicle body design requirements.

[0056] It should also be pointed out that the above-mentioned structural forms of multiple cross-section transitions are adapted to the spatial conditions at different positions inside the A-pillar 1 and the B-pillar 2, and are conducive to improving the overall structural performance and force transmission performance of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4. At the connection between the segments with different cross-sectional shapes, a small section of gradual transition structure is adopted, such as the transition from pentagon to quadrilateral between the front segment 31 and the rear segment 32, the transition from rectangle to hexagon between the upper segment 41 and the middle segment 42, and the transition from hexagon to circle between the middle segment 42 and the lower segment 43; such a setting has a good effect on the structural performance of the connection part and ensures the stability of the overall performance of the beam body.

[0057] The number and position of the connecting bracket 5 can be arranged flexibly. Figure 2As shown, in this embodiment, the connecting bracket 5 includes an upper bracket 51 arranged at the top of the B-pillar reinforcement beam 4, a middle bracket 52 arranged at the middle of the B-pillar reinforcement beam 4, and a lower bracket 53 arranged at the bottom of the B-pillar reinforcement beam 4. The upper bracket 51, the middle bracket 52 and the lower bracket 53 are arranged on the B-pillar reinforcement beam 4 at intervals, which can ensure the stability of the B-pillar reinforcement beam 4 inside the B-pillar 2. At the same time, based on the situation that the upper bracket 51 is arranged at the top of the B-pillar reinforcement beam 4, the upper bracket 51 can be used to achieve the connection between the rear end of the A-pillar reinforcement beam 3 and the top of the B-pillar reinforcement beam 4. The connecting bracket 5 is preferably made of HC420 / 780DPD+Z Baosteel galvanized sheet, and the plate thickness of each connecting bracket 5 can range from 1.0mm to 2.0mm. In the case of the selected material, the plate thickness is limited within the above-set range, which can ensure the reliability of the structural strength of the connecting bracket 5 and help reduce the weight of the connecting bracket 5.

[0058] Specifically, if Fig.11 As shown, the upper bracket 51 is formed with a first fixing groove 511 and a second fixing groove 512, and the rear end of the A-pillar reinforcement beam 3 and the top end of the B-pillar reinforcement beam 4 are respectively inserted into the first fixing groove 511 and the second fixing groove 512. In addition, a first connecting hole 510 can also be provided on the upper bracket 51. In addition to fixing the upper bracket 51 to the A-pillar inner plate 10 by welding, the upper bracket 51 can also be screwed to the upper side beam of the vehicle through the first connecting hole 510 by fastening bolts, thereby increasing the installation firmness of the upper bracket 51 and making the force transmission channel of the B-pillar reinforcement beam 4 better, thereby increasing the safety of the vehicle body. By providing the first fixing groove 511 and the second fixing groove 512 on the upper bracket 51, the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 are respectively inserted, which not only helps to improve the convenience of the connection and assembly operation of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4, but also enhances the connection stability between the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4. Connected to the column reinforcement tube and the upper side beam inner plate,

[0059] Based on the above arrangement, a reinforcing protrusion 513 is further formed at the bottom of the second fixing groove 512 of the present embodiment, and a groove 410 is formed on the top side wall of the B-pillar reinforcement beam 4 corresponding to the reinforcing protrusion 513; as the B-pillar reinforcement beam 4 is inserted into the second fixing groove 512, the reinforcing protrusion 513 abuts against the inner wall of the groove 410. The reinforcing protrusion 513 is arranged at the bottom of the second fixing groove 512 and cooperates with the groove 410 at the top of the B-pillar reinforcement beam 4, which can not only improve the structural stability of the upper bracket 51, but also has a good effect on the structural performance of the top of the B-pillar reinforcement beam 4, and can enhance the safety and reliability of the B-pillar 2 when dealing with the vehicle top pressure condition.

[0060] like Fig.12 and Fig.13As shown, the middle bracket 52 of this embodiment includes a main body 521 formed with a third fixing groove 520 by bending, and a first connecting ear 522 is provided on both sides of the main body 521 for welding and fixing the B-pillar inner plate 20. The middle section 42 of the B-pillar reinforcement beam 4 is tightly held in the third fixing groove 520 to fix the middle of the B-pillar reinforcement beam 4. Similarly, the lower bracket 53 of this embodiment includes a main body 531 formed with a fourth fixing groove 530, and a second connecting ear 532 is provided on both sides of the main body 531 for welding and fixing the B-pillar inner plate 20. The lower section 43 of the B-pillar reinforcement beam 4 is tightly held in the fourth fixing groove 530 to fix the bottom of the B-pillar reinforcement beam 4. Similar to the upper bracket 51 , a second connecting hole 533 may be provided on the main body 531 . In addition to fixing the lower bracket 53 to the A-pillar inner panel 10 by welding, the lower bracket 53 may also be screwed to the B-pillar inner panel 20 by fastening bolts passing through the second connecting hole 533 , thereby increasing the installation firmness of the lower bracket 53 .

[0061] To sum up, the side reinforcement structure of the present embodiment can effectively improve the structural strength of the A-pillar 1 and the B-pillar 2 by respectively arranging an A-pillar reinforcement beam 3 and a B-pillar reinforcement beam 4 with closed-loop cross-sections in the inner cavities of the A-pillar 1 and the B-pillar 2, and connecting the rear end of the A-pillar reinforcement beam 3 and the top end of the B-pillar reinforcement beam 4 at the intersection of the A-pillar 1 and the B-pillar 2, thereby enhancing the safety of the A-pillar 1 in dealing with vehicle head-on collisions and small offset collisions, and the safety of the B-pillar 2 in dealing with vehicle top pressure conditions, which is beneficial to improving the structural performance of the A-pillar 1 and the B-pillar 2 in the vehicle side.

[0062] Embodiment 2

[0063] This embodiment relates to a vehicle, which adopts the side panel reinforcement structure provided in the first embodiment.

[0064] Since the existing A and B pillar reinforcement plates are relatively short, there is a weak area at the intersection of the A pillar 1 and the B pillar 2. During a collision, the weak area is prone to collapse, endangering the safety of the passenger compartment. Compared with the prior art, in the side reinforcement structure of the utility model, the A pillar reinforcement beam 3 and the B pillar reinforcement beam 4 are both closed cross-sectional shapes, and their rigidity and strength are superior to those of traditional reinforcement plates. Among them, the A pillar reinforcement beam 3 can increase the head-on collision and small offset collision performance of the vehicle body, and can increase the vehicle body rigidity by 10% compared to traditional reinforcement plates. The B pillar reinforcement beam 4 can increase the safety of the vehicle body under top pressure conditions, and can increase the vehicle body rigidity by 5% compared to traditional reinforcement plates.

[0065] At the same time, under the premise of meeting the safety performance, the closed cross-sectional shape of the A-pillar reinforcement beam 3 and the B-pillar reinforcement beam 4 can achieve a weight reduction of about 20% compared with the traditional reinforcement plate; and it avoids a large amount of welding work during the installation of the reinforcement plate, which is conducive to reducing the adverse effects of welding spatter on the product.

[0066] In addition, the A-pillar reinforcement beam 3 provided in the first embodiment has a slimmer and lighter structure, which is beneficial to reducing the cross-sectional size of the A-pillar 1, thereby obtaining a wider driving field of vision. Compared with the traditional A-pillar reinforcement plate, the obstacle angle of the A-pillar 1 can be reduced by 34%, and the field of vision area is larger.

[0067] When the front of the car collides, the A-pillar 1 will absorb the collision energy and disperse the energy to the entire car body with the help of the A-pillar reinforcement beam 3. The A-pillar reinforcement beam 3 with a closed cross-section shape can improve the safety factor of the A-pillar 1.

[0068] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A side reinforcement structure, characterized in that: It comprises an A-pillar reinforcement beam (3) arranged inside the A-pillar (1), and a B-pillar reinforcement beam (4) arranged inside the B-pillar (2), and the A-pillar reinforcement beam (3) and the B-pillar reinforcement beam (4) both adopt a hollow tubular structure; The A-pillar reinforcement beam (3) is arranged to extend along the length direction of the A-pillar (1), the B-pillar reinforcement beam (4) is arranged to extend along the length direction of the B-pillar (2), and the rear end of the A-pillar reinforcement beam (3) and the top end of the B-pillar reinforcement beam (4) are connected together at the top position of the B-pillar (2).

2. The side wall reinforcement structure according to claim 1, characterized in that: The A-pillar reinforcement beam (3) and the B-pillar reinforcement beam (4) are both made of hot-formed steel.

3. The side wall reinforcement structure according to claim 2, characterized in that: The wall thickness of the A-pillar reinforcement beam (3) and the B-pillar reinforcement beam (4) are both between 1.2 mm and 2.0 mm.

4. The side wall reinforcement structure according to claim 1, characterized in that: The A-pillar reinforcement beam (3) and the B-pillar reinforcement beam (4) are respectively fixedly connected to the A-pillar inner plate (10) of the A-pillar (1) and the B-pillar inner plate (20) of the B-pillar (2) via a connecting bracket (5).

5. The side wall reinforcement structure according to claim 4, characterized in that: The connecting bracket (5) comprises an upper bracket (51) arranged at the top end of the B-pillar reinforcement beam (4), a middle bracket (52) arranged at the middle of the B-pillar reinforcement beam (4), and a lower bracket (53) arranged at the bottom end of the B-pillar reinforcement beam (4).

6. The side wall reinforcement structure according to claim 5, characterized in that: A first fixing groove (511) and a second fixing groove (512) are formed on the upper bracket (51), and the rear end of the A-pillar reinforcement beam (3) and the top end of the B-pillar reinforcement beam (4) are respectively inserted into the first fixing groove (511) and the second fixing groove (512).

7. The side wall reinforcement structure according to claim 6, characterized in that: A reinforcing protrusion (513) is formed at the bottom of the second fixing groove (512), and a groove (410) is formed on the top side wall of the B-pillar reinforcement beam (4) corresponding to the reinforcing protrusion (513); as the B-pillar reinforcement beam (4) is inserted into the second fixing groove (512), the reinforcing protrusion (513) abuts against the inner wall of the groove (410).

8. The side wall reinforcement structure according to claim 1, characterized in that: The A-pillar reinforcement beam (3) comprises a front section (31) and a rear section (32) which are connected in sequence front to back, the cross section of the front section (31) is a pentagon, the cross section of the rear section (32) is a quadrilateral, and the connection portion between the front section (31) and the rear section (32) is gradually transitioned.

9. The side panel reinforcement structure according to any one of claims 1 to 8, characterized in that: The B-pillar reinforcement beam (4) comprises an upper section (41), a middle section (42) and a lower section (43) which are connected in sequence from top to bottom, the cross section of the upper section (41) is rectangular, the cross section of the middle section (42) is hexagonal, the cross section of the lower section (43) is circular, and the connection parts of the upper section (41) and the middle section (42), and the connection parts of the middle section (42) and the lower section (43) are all gradually transitioned.

10. A vehicle, characterized in that: The vehicle adopts the side panel reinforcement structure according to any one of claims 1 to 9.

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