Side wall inner plate of vehicle and vehicle

Abstract

The utility model relates to the technical field of vehicles, particularly provides a side wall inner plate of a vehicle and the vehicle, and aims to solve the problems of unreasonable strength distribution and high weight and cost caused by excessive strength of some parts on the side wall inner plate of the conventional vehicle. In order to achieve the purpose, the side wall inner plate of the vehicle comprises a roof side rail inner plate, and the roof side rail inner plate comprises a roof side rail inner plate front section and a roof side rail inner plate rear section which are fixedly connected; the top of the B-column inner plate is fixedly connected with the front section of the roof side rail inner plate, so that the joint of the front section of the roof side rail inner plate and the rear section of the roof side rail inner plate is located behind the B-column inner plate, and the plate thickness of the rear section of the roof side rail is smaller than that of the front section of the roof side rail. Through the arrangement, reasonable distribution of strength of all parts on the side wall inner plate is achieved, on the premise that the overall strength of the roof side rail meets the strength requirement of a vehicle, the material grade and the thickness of the rear section of the roof side rail are reasonably reduced, and then the weight and the production cost of the side wall inner plate are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and specifically provides a side inner panel of a vehicle and a vehicle. Background Art

[0002] At present, automobile safety is receiving more and more attention from consumers, and the laws, regulations and standards on automobile safety are becoming increasingly complete and strict to maximize the protection of passenger safety. For example, the vehicle body structure needs to meet the requirements of relevant regulations on small offset collisions, side collisions and top pressure collisions. Among them, the vehicle side plays a very important role.

[0003] However, in order to ensure safety standards, many automobile manufacturers do not hesitate to use material specifications and usage quantities that far exceed the standards in key parts of the car body, resulting in excessive strength in certain parts of the side inner panel, causing unreasonable strength distribution, and thus causing the weight and cost of the side inner panel to remain high.

[0004] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the above technical problem, that is, to solve the problem that certain parts of the side inner panel of the existing vehicle have excessive strength, resulting in unreasonable strength distribution, high weight and cost.

[0006] In a first aspect, the utility model provides a side inner panel of a vehicle, the side inner panel comprising: an upper side beam inner panel, the upper side beam inner panel comprising a fixedly connected upper side beam inner panel front section and an upper side beam inner panel rear section; a B-pillar inner panel, the top of the B-pillar inner panel being fixedly connected to the upper side beam inner panel front section so that the connection between the upper side beam inner panel front section and the upper side beam inner panel rear section is located behind the B-pillar inner panel.

[0007] In the preferred technical solution of the above-mentioned side panel inner plate, the plate thickness of the front section of the roof side beam inner plate is greater than the plate thickness of the rear section of the roof side beam inner plate.

[0008] In the preferred technical solution of the above-mentioned side panel inner plate, the front section of the roof side sill inner plate is constructed of hot-formed steel, and the rear section of the roof side sill inner plate is constructed of ultra-high strength steel.

[0009] In the preferred technical solution of the above-mentioned side panel inner plate, the plate thickness of the front section of the upper side beam inner plate is set to 1.6 mm, and the plate thickness of the rear section of the upper side beam inner plate is set to 1.2 mm-1.4 mm.

[0010] In the preferred technical solution of the above-mentioned side panel inner panel, the distance between the connection between the front section of the upper side beam inner panel and the rear section of the upper side beam inner panel and the B-pillar inner panel is set to 80mm-180mm.

[0011] In the preferred technical solution of the above-mentioned side panel inner panel, the front section of the upper side beam inner panel also includes a connecting plate, which extends downward from the front section of the upper side beam inner panel and the length of the connecting plate in the vertical direction is set to 20mm-50mm, and the top of the B-pillar inner panel is fixedly connected to the connecting plate.

[0012] In the preferred technical solution of the above-mentioned side panel inner panel, the B-pillar inner panel is constructed of ultra-high strength steel, and the plate thickness of the B-pillar inner panel is set to 1.0 mm-1.4 mm.

[0013] In the preferred technical solution of the above-mentioned side panel inner panel, the B-pillar inner panel includes a fixedly connected upper section of the B-pillar inner panel and a lower section of the B-pillar inner panel, the top of the upper section of the B-pillar inner panel is fixedly connected to the front section of the upper side beam inner panel, the upper section of the B-pillar inner panel and the lower section of the B-pillar inner panel are both constructed of ultra-high strength steel, and the plate thickness of the upper section of the B-pillar inner panel is set to 1.0mm-1.2mm, and the plate thickness of the lower section of the B-pillar inner panel is set to 1.2mm-1.4mm.

[0014] In the preferred technical solution of the above-mentioned side panel inner panel, the front section of the upper side beam inner panel is welded and fixed to the rear section of the upper side beam inner panel, and / or the front section of the upper side beam inner panel is welded and fixed to the B-pillar inner panel.

[0015] In a second aspect, the present invention provides a vehicle comprising the above-mentioned side inner panel.

[0016] When the above technical solution is adopted, the side panel of the utility model includes: an upper side beam inner panel, which includes a front section of the upper side beam inner panel and a rear section of the upper side beam inner panel that are fixedly connected; a B-pillar inner panel, the top of the B-pillar inner panel is fixedly connected to the front section of the upper side beam inner panel, so that the connection between the front section of the upper side beam inner panel and the rear section of the upper side beam inner panel is located behind the B-pillar inner panel. Through such an arrangement, the front section of the upper side beam inner panel and the B-pillar inner panel form a frame-shaped load-bearing structure, so that the two can jointly resist the collision force from the top, front and side of the vehicle body, improve the structural strength of the main load-bearing parts of the side panel, reduce the load-bearing pressure on the rear section of the upper side beam inner panel, and appropriately reduce the material specifications and plate thickness of the rear section of the upper side beam inner panel. Therefore, while ensuring the safety performance requirements of the vehicle, it can also effectively reduce the overall weight and production cost of the side panel.

[0017] Furthermore, the thickness of the front section of the inner plate of the roof side beam of the present invention is greater than the thickness of the rear section of the inner plate of the roof side beam.

[0018] Furthermore, the front section of the upper side beam inner panel of the present invention is constructed of hot-formed steel, and the rear section of the upper side beam inner panel is constructed of ultra-high-strength steel. Through this arrangement, strength zoning is achieved at the front and rear of the upper side beam inner panel. On the one hand, the structural strength of the front part of the side panel inner panel (the main load-bearing area) is ensured to improve the performance against top pressure, side collision and side collision; on the other hand, the use of ultra-high-strength steel improves the material strength of the rear section of the upper side beam inner panel, so that the thickness of the plate at the rear section of the upper side beam inner panel (non-main load-bearing area) can be appropriately reduced without reducing the overall strength, thereby reducing the overall weight and production cost of the upper side beam inner panel and achieving lightweighting of the vehicle body.

[0019] Furthermore, the thickness of the front section of the roof side rail inner plate of the present invention is set to 1.6mm, and the thickness of the rear section of the roof side rail inner plate is set to 1.2mm-1.4mm. Through this arrangement, the vehicle's requirements for the roof side rail inner plate in terms of strength, weight and cost can be taken into account to the greatest extent.

[0020] Furthermore, the distance between the connection between the front and rear sections of the roof side sill inner panel and the B-pillar inner panel of the present invention is set at 80mm-180mm. This arrangement, on the one hand, makes the distribution ratio of strength, weight and cost between the front and rear areas of the roof side sill inner panel more reasonable, thereby better meeting the various performance requirements of the vehicle for the roof side sill inner panel; on the other hand, it facilitates the connection and assembly of the front and rear sections of the roof side sill inner panel.

[0021] Furthermore, the front section of the roof rail inner panel of the present invention also includes a connecting plate extending downward from the front section of the roof rail inner panel and having a vertical length of 20mm-50mm. The top of the B-pillar inner panel is fixedly connected to the connecting plate. This arrangement not only helps to improve the connection strength at the joint between the front section of the roof rail inner panel and the B-pillar inner panel, but also facilitates the connection and assembly of the front section of the roof rail inner panel and the B-pillar inner panel.

[0022] Furthermore, the B-pillar inner panel of the present invention is constructed from ultra-high-strength steel, and its thickness is set to 1.0mm-1.4mm. This configuration improves the material strength of the B-pillar inner panel, allowing the thickness of the B-pillar inner panel to be appropriately reduced without reducing the overall structural strength of the B-pillar inner panel, thereby reducing overall weight and production costs.

[0023] Furthermore, the B-pillar inner panel of the present invention includes a fixedly connected upper B-pillar inner panel section and a lower B-pillar inner panel section. The top of the upper B-pillar inner panel section is fixedly connected to the front section of the upper side beam inner panel section. The upper B-pillar inner panel section and the lower B-pillar inner panel section are both constructed of ultra-high-strength steel. The thickness of the upper B-pillar inner panel section is set to 1.0mm-1.2mm, and the thickness of the lower B-pillar inner panel section is set to 1.2mm-1.4mm. This arrangement enriches the strength distribution combination schemes of different areas on the B-pillar inner panel, can more reasonably distribute the strength and weight of different areas of the B-pillar inner panel, improves the ability of the middle and lower areas of the B-pillar inner panel to resist deformation, makes it have a certain toughness, and can bend and absorb energy when impacted, and further reduces the weight and cost of the B-pillar inner panel.

[0024] Furthermore, the front section of the roof side rail inner plate of the present invention is welded to the rear section of the roof side rail inner plate, and / or the front section of the roof side rail inner plate is welded to the B-pillar inner plate. Through such an arrangement, the connection process is mature and reliable, and the connection strength is high.

[0025] In addition, the vehicle further provided by the present invention on the basis of the above-mentioned side inner panels adopts the above-mentioned side inner panels, and thus has the technical effects possessed by the above-mentioned side inner panels. Compared with the vehicle before the improvement, the strength distribution of various parts on the side inner panels of the vehicle of the present invention is more reasonable, which can meet the requirements of vehicle safety. At the same time, the overall structure of the side inner panels is simplified, the material specifications and dimensions of non-critical parts are reduced, and the weight and production costs of the side inner panels are effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings, in which:

[0027] Figure 1 It is a structural schematic diagram of the side inner panel of the utility model;

[0028] Figure 2 This is a structural diagram of the inner plate of the upper side beam of the present utility model;

[0029] Figure 3 This is a schematic structural diagram of the B-pillar inner panel of the present invention;

[0030] Figure 4 yes Figure 1 Cross-sectional view at AA in the middle;

[0031] Figure 5 yes Figure 1 Cross-sectional view at the middle BB.

[0032] List of reference numerals:

[0033] 1. Upper side beam inner panel; 11. Front section of upper side beam inner panel; 111. Connecting plate; 12. Rear section of upper side beam inner panel; 2. B-pillar inner panel; 21. Upper section of B-pillar inner panel; 22. Rear section of B-pillar inner panel. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0035] It should be noted that, in the description of the present invention, terms such as "inside", "outside", "up", "down", and "top" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0036] Furthermore, it should be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, to refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] Based on the problem pointed out in the background art that certain parts of the side panel inner panels of existing vehicles have excessive strength, resulting in unreasonable strength distribution, high weight and cost. The utility model provides a side panel inner panel of a vehicle and a vehicle, aiming to achieve a reasonable distribution of front and rear strength and weight without reducing the overall strength of the side panel inner panel by dividing the side panel inner panel into a front side panel inner panel section and a rear side panel inner panel section, so that the front side panel inner panel section is fixedly connected to the B-pillar inner panel, and different materials and thicknesses are used for the front side panel inner panel section and the rear side panel inner panel section, thereby reducing the overall weight and cost without reducing the overall strength of the side panel inner panel.

[0038] Specifically, if Figure 1 and Figure 2 As shown, the side inner panel of the present invention includes: an upper side beam inner panel, which includes a fixedly connected upper side beam inner panel front section and an upper side beam inner panel rear section; a B-pillar inner panel, the top of the B-pillar inner panel is fixedly connected to the upper side beam inner panel front section, so that the connection between the upper side beam inner panel front section and the upper side beam inner panel rear section is located behind the B-pillar inner panel.

[0039] For example, the side panel inner panel is located on the inner side of the side panel outer panel of the vehicle body, and includes the A-pillar inner panel, upper side beam inner panel, B-pillar inner panel, C-pillar inner panel, D-pillar inner panel and lower side beam inner panel connected in sequence. Together, they constitute the side frame of the vehicle body, which plays a role in supporting and transmitting force.

[0040] In this solution, the upper side beam inner panel is divided into two sections, front and rear. Among them, the front section of the upper side beam inner panel is set to an arc shape, extending from the engine compartment to the rear of the B-pillar. Its front end is connected to the A-pillar inner panel and the engine compartment upper side beam, and the rear end is fixedly connected to the top of the B-pillar inner panel, thus forming a front door frame structure together with the lower side beam. When the vehicle encounters an offset collision, the collision force will first be transmitted to the front section of the upper side beam inner panel through the engine compartment, and then transmitted rearward to the B-pillar inner panel through the front section of the upper side beam inner panel; when the vehicle encounters a top pressure collision, the front section of the upper side beam inner panel will directly bear the top pressure and transmit the pressure downward to the B-pillar inner panel; when the vehicle encounters a side collision, the front section of the upper side beam inner panel and the B-pillar inner panel need to jointly bear the impact force from the side. Therefore, no matter which direction the vehicle encounters a collision, the front section of the upper side beam inner panel and the B-pillar inner panel are the main load-bearing parts and play a vital role. Their strength determines the overall strength of the side inner panel and the deformation resistance of the cockpit.

[0041] The rear section of the upper side beam is fixedly connected to the front section of the upper side beam, and the connection point between the two is located at a distance behind the inner panel of the B-pillar. Since the rear section of the inner panel of the B-pillar is not the main load-bearing area, the strength and thickness of the material can be appropriately reduced to reduce the structural weight and production cost.

[0042] To sum up, the frame-type load-bearing structure formed by the front section of the upper side beam inner panel and the B-pillar inner panel enables the two to jointly resist the collision force from the top, front and side of the vehicle body, improves the structural strength of the main load-bearing area of ​​the side panel inner panel, and reduces the load-bearing pressure on the rear section of the upper side beam inner panel, so that the material specifications and plate thickness of the rear section of the upper side beam inner panel can be appropriately reduced, thereby ensuring the vehicle safety performance requirements while effectively reducing the overall weight and production cost of the side panel inner panel.

[0043] Preferably, if Figure 1 、 Figure 2 and Figure 4 As shown, the thickness of the front section of the inner plate of the roof side beam of the present invention is greater than the thickness of the rear section of the inner plate of the roof side beam.

[0044] This achieves structural weight reduction of the non-main load-bearing part of the rear section of the upper side beam inner plate. It should be noted that, in actual application, the specific thickness of the two can be flexibly set according to the specific materials used and strength requirements.

[0045] Preferably, if Figure 1 、 Figure 2 and Figure 4 As shown, the front section of the upper side sill inner panel is constructed of hot-formed steel, and the rear section of the upper side sill inner panel is constructed of ultra-high-strength steel.

[0046] For example, the hot-formed steel used in the front section of the upper side beam inner panel is realized by a hot stamping process of heating and forming, and the ultra-high strength steel used in the rear section of the upper side beam inner panel is realized by a cold stamping process.

[0047] This achieves strength zoning in the front and rear of the upper side beam inner panel. On the one hand, it ensures the structural strength of the front part of the side inner panel (the main load-bearing area) to improve the performance against top pressure, side collision and side collision; on the other hand, the use of ultra-high-strength steel improves the material strength of the rear section of the upper side beam inner panel, so that the panel thickness of the rear section of the upper side beam inner panel (non-main load-bearing area) can be appropriately reduced without reducing the overall strength, thereby reducing the overall weight and production cost of the upper side beam inner panel and achieving lightweighting of the vehicle body.

[0048] Preferably, if Figure 1 、 Figure 2 and Figure 4 As shown, the plate thickness of the front section of the inner plate of the upper side beam of the present invention is set to 1.6 mm, and the plate thickness of the rear section of the inner plate of the upper side beam is set to 1.2 mm-1.4 mm.

[0049] For example, the front section of the roof rail inner panel is made of hot-formed steel (PHS950Y1300T AS 60 / 60 - 1.6mm thick), while the rear section is made of third-generation ultra-high-strength steel (QPC650Y980T - 1.2mm - 1.4mm thick), preferably 1.2mm thick. This preferred solution maximizes the vehicle's requirements for the roof rail inner panel's strength, weight, and cost.

[0050] Preferably, if Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, the distance between the connection between the front section of the upper side beam inner panel and the rear section of the upper side beam inner panel and the B-pillar inner panel of the present invention is set to 80mm-180mm.

[0051] Specifically, the front section of the roof side beam inner plate extends rearward to form a joint 80mm-180mm behind the B-pillar, and is fixedly connected to the rear section of the roof side beam inner plate at the joint. The distance is preferably set to 100mm.

[0052] It should be noted that the front section of the upper side beam inner panel and the rear section of the upper side beam inner panel are connected by a double-row spot welding process at the joint, and the two will partially overlap at the joint, thus forming a strength combination of PHS950Y1300T AS 60 / 60-1.6mm plus QPC650Y980T-1.2-1.4mm at the joint, which improves the structural strength of the joint.

[0053] Therefore, through such an arrangement, on the one hand, the distribution ratio of strength, weight and cost of the front and rear areas of the upper side beam inner panel is made more reasonable, so as to better meet the vehicle's performance requirements for all aspects of the upper side beam inner panel; on the other hand, it facilitates the connection and assembly of the front section of the upper side beam inner panel and the rear section of the upper side beam inner panel.

[0054] Preferably, if Figure 1 and Figure 2 As shown, the front section of the upper side beam inner plate of the present invention also includes a connecting plate, which extends downward from the front section of the upper side beam inner plate and has a vertical length of 20mm-50mm. The top of the B-pillar inner plate is fixedly connected to the connecting plate.

[0055] The upper side beam inner panel forms a downward joint at the B-pillar position. On the one hand, it helps to improve the connection strength at the joint between the front section of the upper side beam inner panel and the B-pillar inner panel; on the other hand, it facilitates the connection and assembly of the front section of the upper side beam inner panel and the B-pillar inner panel.

[0056] Preferably, if Figure 1 and Figure 3 As shown, the B-pillar inner panel of the present invention is made of ultra-high strength steel, and the thickness of the B-pillar inner panel is set to 1.0 mm-1.4 mm.

[0057] For example, the material thickness of the B-pillar inner panel is defined as the third-generation ultra-high-strength steel: QPC650Y980T-1.0-1.4mm, and the thickness is preferably 1.2mm. In this way, the connection between the B-pillar inner panel and the connecting plate forms a strength combination of PHS950Y1300T AS 60 / 60-1.6mm plus QPC650Y980T-1.2mm, thereby improving the structural strength of the joint.

[0058] In addition, the use of ultra-high-strength steel also improves the material strength of the B-pillar inner panel, so that the thickness of the B-pillar inner panel can be appropriately reduced without reducing the overall structural strength of the B-pillar inner panel, thereby reducing the overall weight and production costs.

[0059] Preferably, if Figure 3 and Figure 5 As shown, the B-pillar inner panel of the present invention includes a fixedly connected upper B-pillar inner panel section and a lower B-pillar inner panel section, the top of the upper B-pillar inner panel section is fixedly connected to the front section of the upper side beam inner panel, the upper B-pillar inner panel section and the lower B-pillar inner panel section are both constructed of ultra-high-strength steel, and the plate thickness of the upper B-pillar inner panel section is set to 1.0mm-1.2mm, and the plate thickness of the lower B-pillar inner panel section is set to 1.2mm-1.4mm.

[0060] Exemplarily, the connection between the upper section of the B-pillar inner panel and the lower section of the B-pillar inner panel is located 40 mm to 100 mm above the B-pillar retractor.

[0061] The upper section and the lower section of the B-pillar inner panel are both made of the third-generation ultra-high-strength steel: QPC650Y980T, and the thickness of the upper section of the B-pillar inner panel is preferably 1.2mm, and the thickness of the lower section of the B-pillar inner panel is preferably 1.4mm.

[0062] This enriches the strength distribution combination scheme of different areas on the B-pillar inner panel, and can more reasonably distribute the strength and weight of different areas of the B-pillar inner panel. It not only allows the thickness of the joint area of ​​the upper section of the B-pillar inner panel to be reduced to 1.2mm, reducing the weight and cost to a certain extent, but also improves the ability of the middle and lower areas of the B-pillar inner panel to resist deformation, making it have a certain toughness. There is no need to set a reinforcement plate in the B-pillar inner panel area, so that it can bend and absorb energy when impacted, and further reduces the weight and cost of the B-pillar inner panel.

[0063] Preferably, if Figures 1 to 5 As shown, the front section of the roof side beam inner panel of the present invention is welded and fixed to the rear section of the roof side beam inner panel, and / or the front section of the roof side beam inner panel is welded and fixed to the B-pillar inner panel.

[0064] The front section of the upper side beam inner panel and the rear section of the upper side beam inner panel are connected by double-row spot welding, while the front section of the upper side beam inner panel and the B-pillar inner panel are connected by steel spot welding, making the connection process mature, reliable and with high connection strength.

[0065] In addition, the vehicle further provided by the present invention on the basis of the above-mentioned side inner panels adopts the above-mentioned side inner panels, and thus has the technical effects possessed by the above-mentioned side inner panels. Compared with the vehicle before the improvement, the strength distribution of various parts on the side inner panels of the vehicle of the present invention is more reasonable, which can meet the requirements of vehicle safety. At the same time, the overall structure of the side inner panels is simplified, the material specifications and dimensions of non-critical parts are reduced, and the weight and production costs of the side inner panels are effectively reduced.

[0066] Thus far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art may make equivalent changes or substitutions to the relevant technical features, and the technical solutions after such changes or substitutions will fall within the scope of protection of the present invention.

Claims

1. A side inner panel of a vehicle, characterized in that: The side inner panel comprises: A roof side rail inner plate, the roof side rail inner plate comprising a front roof side rail inner plate section and a rear roof side rail inner plate section that are fixedly connected; The top of the B-pillar inner panel is fixedly connected to the front section of the upper side beam inner panel. So that the connection between the front section of the roof side beam inner plate and the rear section of the roof side beam inner plate is located behind the B-pillar inner plate.

2. The side inner panel according to claim 1, characterized in that: The plate thickness of the front section of the roof side beam inner plate is greater than the plate thickness of the rear section of the roof side beam inner plate.

3. The side inner panel according to claim 2, characterized in that: The front section of the roof side beam inner plate is made of hot-formed steel, and the rear section of the roof side beam inner plate is made of ultra-high strength steel.

4. The side inner panel according to claim 3, characterized in that: The plate thickness of the front section of the upper side beam inner plate is set to 1.6 mm, and the plate thickness of the rear section of the upper side beam inner plate is set to 1.2 mm-1.4 mm.

5. The side inner panel according to claim 1, characterized in that: The distance between the connection between the front section of the upper side beam inner plate and the rear section of the upper side beam inner plate and the B-pillar inner plate is set to 80mm-180mm.

6. The side inner panel according to claim 1, characterized in that: The front section of the upper side beam inner plate also includes a connecting plate, which extends downward from the front section of the upper side beam inner plate and has a vertical length of 20mm-50mm. The top of the B-pillar inner plate is fixedly connected to the connecting plate.

7. The side inner panel according to any one of claims 1 to 6, characterized in that: The B-pillar inner panel is made of ultra-high strength steel, and the thickness of the B-pillar inner panel is set to 1.0 mm-1.4 mm.

8. The side inner panel according to any one of claims 1 to 6, characterized in that: The B-pillar inner panel includes an upper B-pillar inner panel section and a lower B-pillar inner panel section that are fixedly connected. The top of the upper B-pillar inner panel section is fixedly connected to the front section of the upper side beam inner panel. The upper B-pillar inner panel section and the lower B-pillar inner panel section are both constructed of ultra-high-strength steel, and the plate thickness of the upper B-pillar inner panel section is set to 1.0mm-1.2mm, and the plate thickness of the lower B-pillar inner panel section is set to 1.2mm-1.4mm.

9. The side inner panel according to claim 1, characterized in that: The front section of the roof side beam inner panel is welded and fixed to the rear section of the roof side beam inner panel, and / or the front section of the roof side beam inner panel is welded and fixed to the B-pillar inner panel.

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

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