Edge beam structure, vehicle frame structure and vehicle

Abstract

The utility model discloses a boundary beam structure, a vehicle frame structure and a vehicle. The boundary beam structure comprises a hot air expansion pipe and a connecting plate. The connecting plate is annularly arranged on the periphery of the hot air expansion pipe, and part of the structure of the connecting plate extends in the direction away from the hot air expansion pipe to be used for being connected with the roof beam. The connecting plate is integrally formed on the periphery of the hot air expansion pipe. The connecting plate is integrally formed on the periphery of the hot air expansion pipe and used for being connected with the roof beam. And an inner plate structure for supporting and connecting the roof cross beam is not required to be arranged in the boundary beam area of the vehicle. According to the structure, the weight of the vehicle is reduced, meanwhile, the space utilization rate of the area is improved, and the strength and rigidity of the area are improved.

Description

Technical Field

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

[0002] With the rapid development of the automobile industry, users have higher and higher requirements on the appearance of vehicles. In addition, as the industry's "involution" intensifies, the design requirements for safety and weight reduction are also getting higher and higher. Based on this background, the application of hot air expansion products is gradually increasing, and there are various problems in the manufacture and use of hot air expansion tubes. Utility Model Content

[0003] The purpose of the present application is to provide a side beam structure, a vehicle frame structure and a vehicle with high strength and rigidity.

[0004] The present application discloses a side beam structure, which comprises:

[0005] Hot air expansion tube;

[0006] A connecting plate, the connecting plate is arranged around the outer periphery of the hot air expansion tube, and a part of the connecting plate extends away from the hot air expansion tube to be used for connecting the roof crossbeam;

[0007] Wherein, the connecting plate is integrally formed on the outer periphery of the hot air expansion tube.

[0008] Optionally, the connecting plate includes a main body and an extension, the main body is arranged around the periphery of the hot air expansion tube, one end of the extension is connected to the main body, and the other end extends outward and is used to connect to the roof beam;

[0009] The extension portion extends outward from at least two locations of the main body portion and merges to form a support cavity together with the main body portion.

[0010] Optionally, the strength of the material of the connecting plate is lower than the strength of the material of the hot air expansion tube, and the stiffness of the material of the connecting plate is higher than the stiffness of the material of the hot air expansion tube.

[0011] Optionally, the hot air expansion tube includes a weld along its length direction, and the weld is located on a side of the hot air expansion tube facing downward or toward an inner side of the vehicle.

[0012] Optionally, a mounting hole for mounting interior decoration is provided on a side of the hot air expansion tube facing the interior of the vehicle, and a minimum distance between the mounting hole and the weld is greater than or equal to 2.5 mm.

[0013] The present application also discloses a vehicle frame structure, which includes an outer panel assembly, a roof cross beam and the above-mentioned side beam structure; the outer panel assembly is arranged on the outer side of the side beam structure and connected to the side beam structure; the roof cross beam is connected to the connecting plate.

[0014] Optionally, the vehicle frame structure also includes an interior mounting plate, which is arranged on the inner side of the outer panel assembly and connected to the outer panel assembly; the side beam structure is located between the outer panel assembly and the interior mounting plate; a gap is set between the interior mounting plate and the hot air expansion tube, and a spacer is set in the gap between the two, and the gap between the interior mounting plate and the hot air expansion tube is greater than or equal to 2.5 mm.

[0015] Optionally, the vehicle frame structure includes at least one interior mounting plate, one interior mounting plate is arranged at the connection position between the outer panel assembly and the vehicle B-pillar and connected to the vehicle B-pillar; and / or one interior mounting plate is arranged in the middle area of ​​the vehicle A-pillar.

[0016] Optionally, the minimum distance between the interior trim mounting plate and the connecting plate is greater than or equal to 2.5 mm;

[0017] A mounting hole for mounting the interior decoration is arranged on the side of the hot air expansion tube facing the interior of the vehicle, and the minimum distance from the interior decoration mounting plate to the mounting hole on the hot air expansion tube is greater than or equal to 2.5 mm.

[0018] The present application also discloses a vehicle, which includes the vehicle frame structure mentioned above.

[0019] Compared with the related art, the connection plate of the present application is integrally formed on the outer periphery of the hot air expansion tube for connecting the roof cross beam. This eliminates the need for an inner plate structure in the side beam area of ​​the vehicle to support and connect the roof cross beam. This structure reduces the weight of the vehicle, improves the space utilization of the area, and increases the strength and rigidity of the area.

[0020] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and, together with the description, serve to explain the principles of the specification.

[0022] Figure 1 Structural schematic diagram of the side beam structure of the present application.

[0023] Figure 2 This is a schematic diagram of the partial structure of the vehicle frame structure of the present application.

[0024] Figure 3 This is a structural schematic diagram of the vehicle frame structure of this application.

[0025] Figure 4 for Figure 3 Schematic diagram of the cross section along line AA.

[0026] Figure 5 This is a schematic diagram of the structure of part of the vehicle of the present application. DETAILED DESCRIPTION

[0027] Here, the technical solutions in the embodiments (or "implementations") of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0028] If there are terms involving directional indications or positional relationships in the embodiments of the present application (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings); if the specific posture changes, the directional indication or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. involved in the embodiments of the present application are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1 and Figure 4 As shown, the present application provides a side beam structure 100, which includes a hot air expansion tube 10 and a connecting plate 20. The connecting plate 20 is arranged around the outer periphery of the hot air expansion tube, and a part of the connecting plate 20 extends away from the hot air expansion tube 10 to connect to the roof cross beam 300. The connecting plate 20 is integrally formed on the outer periphery of the hot air expansion tube 10.

[0030] The connecting plate of the present application is integrally formed on the outer periphery of the hot air expansion tube for connecting the roof cross beam. This eliminates the need for an inner plate structure in the side beam area of ​​the vehicle to support and connect the roof cross beam. This structure reduces the weight of the vehicle, improves the space utilization of the area, and increases the strength and rigidity of the area.

[0031] The following will describe in detail various embodiments of the present application that are consistent with the above-mentioned creative concepts.

[0032] like Figure 1 and Figure 4 , Figure 5 As shown, an embodiment of the present application discloses a side beam structure 100 , which includes a hot air expansion tube 10 and a connecting plate 20 .

[0033] The hot air expansion tube 10 is arranged between the front triangular window area and the upper side of the rear window of the vehicle along the length direction of the vehicle body, and the extension length of the hot air expansion tube 10 can be determined according to actual needs. In this embodiment, the hot air expansion tube 10 can extend from the triangular window area of ​​the vehicle to the area where the top of the vehicle is connected to the C-pillar 3000. Of course, in other embodiments, the hot air expansion tube 10 can also be arranged in different areas of the vehicle.

[0034] The hot-expanding tube 10 is manufactured by a hot-expanding process. The conventional hot-expanding process includes the steps of tube making - tube bending - mold pre-pressing - blank heating - mold closing and pressing - inflation hot-expanding - cooling and quenching - laser cutting. In the embodiment of the present application, a composite die-casting link is added between the inflation hot-expanding and cooling and quenching to form an integrated side beam structure of the hot-expanding tube 10 and the connecting plate 20.

[0035] In the tube making process, materials of different materials and thicknesses are selected to make the tube structure. For example, steel plates or steel alloys can be selected as blanks, and then the finished steel tubes are obtained through uncoiling, shearing and welding, looping, leveling, forming, welding scar scraping, cooling, finishing, speed measurement, straightening, tube cutting and blanking. Of course, the tube structure can also be made of the same material, such as directly using the same steel plate to make the tube structure, so as to avoid the tube structure having a welding seam along its circumference.

[0036] In the pipe bending process, the finished steel pipe is placed in a special pipe bending mold, and a bending torque is applied to the pipe through hydraulic or electric drive to form it into the desired bending shape.

[0037] In the mold pre-pressing and forming stage, the bent pipe is placed in the mold cavity, and the upper and lower molds are pressed together to pre-form the pipe so that it is initially formed into the required shape, which is convenient for subsequent hot air expansion mold entry.

[0038] After pre-pressing and before heating the blank, the dew point of the air can be detected and the humidity content in the air can be controlled. Among them, the dew point refers to the temperature at which dew begins to form when the air is cooled to saturation under a fixed air pressure. Dew point control is mainly used to adjust and maintain the humidity level in the air or other gas mixtures. Therefore, dew point control is essentially to monitor and adjust the moisture content in the air to ensure that its dew point temperature remains within a preset range to meet the requirements of different applications. In this embodiment, the low dew point value of the dew point control is set to be less than or equal to -5°C. That is, the temperature at which water vapor in the gas begins to condense into liquid does not exceed -5°C. For example, the low dew point value of the dew point control can be -5°C, -8°C, -11°C, -14°C or -17°C, etc. It should be noted that for 1500Mpa products, it can be controlled to be less than or equal to -5°C. At the same time, for 2000Mpa products, it is controlled to be less than or equal to -10°C.

[0039] The following methods can be used to control the humidity content in the air: 1. Desiccant dehumidification: use silica gel, molecular sieve and other materials to absorb moisture in the air. 2. Refrigeration dehumidification: cool the air to below the dew point through the refrigeration cycle, condense and remove moisture, and then heat the air to the original temperature and send it back. 3. Rotary dehumidifier: use a rotary wheel made of hygroscopic material to absorb moisture in the air, and then regenerate dehumidification through heating. 4. Chemical dehumidification: absorb moisture in the air through chemical reactions. 5. Automatic control system: combine sensors (such as humidity sensors, dew point sensors) to monitor the humidity level in the environment or process in real time, and automatically adjust the working state of the dehumidification equipment through controllers, etc. to achieve precise dew point control. Because the moisture content in the environment is reduced during heating, the generation of hydrogen is limited, thereby reducing the chance of hydrogen atoms penetrating into the material, thereby reducing the possibility of hydrogen embrittlement.

[0040] In the blank heating stage, the preformed pipe is placed in a heating furnace and heated to austenitization by resistance heating. The heating rate and maximum temperature are controlled to ensure that the pipe structure and performance are optimized. Specifically, it can be heated to a temperature greater than or equal to 900°C and less than or equal to 1000°C. For example, the specific temperature can be 900°C, 930°C, 960°C, 970°C, 990°C or 1000°C.

[0041] In the mold closing and pressing stage, the heated pipe is placed in the closed mold cavity and high pressure is applied to further shape the pipe into the desired final shape under the action of the mold. The temperature of the pipe must be at least 650℃ when it is placed in the mold.

[0042] In the inflation step, high-pressure gas is injected into the inner cavity of the mold. Optionally, the pressure of the high-pressure gas can be around 50Mpa-70Mpa. The inner cavity is inflated to make the outer surface of the part fit the mold to form the final shape of the part.

[0043] In the composite die-casting process, before the pipe is completely cooled, a molten alloy is injected into the designated position of the hot gas expansion tube, and the alloy and the hot gas expansion tube are die-cast into an integrated component. The melting point of the alloy is lower than the melting point of the material of the hot gas expansion tube to ensure that the hot gas expansion tube remains in a solid state when the alloy is in a molten state. The strength of the alloy in a solid state is also lower than the strength of the material of the hot gas expansion tube. The stiffness of the alloy in a solid state is higher than the stiffness of the material of the hot gas expansion tube. In this way, the stiffness of the structure can be effectively improved, and the torsional stiffness after the side beam structure 100 is connected to the roof cross beam 300 is greatly improved. The alloy material can be an aluminum alloy or an aluminum-magnesium alloy, etc. In this embodiment, the alloy is die-cast into a connecting plate 20.

[0044] In the cooling and quenching stage, the formed pipe fittings are taken out of the mold and subjected to rapid cooling treatment such as water quenching or oil quenching. The parts are quickly cooled and quenched through the mold water channel to form a martensitic structure.

[0045] In the laser cutting process, laser cutting removes excess material from parts, forms holes and edges, and thus forms the final part state.

[0046] During the preparation process, various parameters are controlled so that the deformation rate of the cross-sectional perimeter of the hot expansion tube 10 after expansion is less than or equal to 10%. Preferably, the change rate of the cross-sectional perimeter of the hot expansion tube 10 after expansion is controlled at 7%-10%. The change rate of the cross-sectional perimeter of the hot expansion tube 10 refers to the difference between the perimeter of the cross-sectional perimeter of the hot expansion tube 10 with the longest perimeter and the perimeter of the cross-sectional perimeter of the hot expansion tube 10 with the shortest perimeter, divided by the perimeter of the cross-sectional perimeter of the hot expansion tube 10 with the shortest perimeter. The strength of the material used in the hot expansion tube 10 of the present application can reach about 2Gpa.

[0047] like Figures 3 to 5 As shown, the connecting plate 20 is arranged around the periphery of the hot air expansion tube 10. Specifically, the connecting plate 20 is arranged around the periphery of a certain section of the hot air expansion tube 10. The position of the section can be determined according to the actual installation position of the roof cross beam 300. For example, in this embodiment, the hot air expansion tube 10 extends from the triangular window area of ​​the vehicle to the area connected to the C-pillar 3000 on the top of the vehicle. The roof cross beam 300 is arranged on the upper side of the triangular window area of ​​the vehicle. Therefore, the connecting plate 20 is arranged around the periphery of the section of the hot air expansion tube 10 located in the triangular window area. Part of the structure of the connecting plate 20 extends in a direction away from the hot air expansion tube 10 for connecting the roof cross beam 300. That is, the connecting plate 20 includes two parts, namely, a main body 21 connected to the hot air expansion tube 10 and an extension part 22 connected to the roof cross beam 300.

[0048] The main body 21 surrounds the hot-expandable tube 10 in the circumferential direction of the cross section of the hot-expandable tube 10 and fits with the hot-expandable tube 10, that is, when the connecting plate 20 is still in a molten state, a part of the molten connecting plate 20 completely wraps the outer surface of a section of the hot-expandable tube 10, and finally is integrally formed with the hot-expandable tube 10 of this section to form the main body 21. That is, the main body 21 and the hot-expandable tube 10 covered by the main body 21 are integral. The length of the section of the hot-expandable tube 10 covered by the main body 21 can be determined according to actual needs. The longer the section of the hot-expandable tube 10 covered by the main body 21, the more stable the connection between the connecting plate 20 and the hot-expandable tube 10, that is, the better the integrity of the side beam structure 100.

[0049] The extension portion 22 extends from the main body 21 in a direction away from the hot air expansion tube 10 for connecting the roof crossbar 300. The extension portion 22 extends outward from at least two positions of the main body 21 and merges to form a support cavity 23 with the main body 21. In this embodiment, the extension portion 22 extends from two relatively upper and lower positions of the main body 21 to the inside of the vehicle respectively, and merges to form a support cavity 23. The extension portion 22 of such a structure is more stable and has better connection performance, which can make the connection between the hot air expansion tube 10 and the roof crossbar 300 more stable. Of course, the extension portion 22 can also extend from three, four or five positions of the main body 21 to the inside of the vehicle, and selectively merge two, three or four of the extended structures to form different cavity support structures. It should be noted that the extension portion 22 extends outward from the main body and merges, but it is not required to form a sealed cavity.

[0050] like Figure 4 As shown, in an optional embodiment, a steel plate or steel alloy is used as a blank, and a pipe is made through processes such as uncoiling and shearing welding, which will leave a weld structure along the length of the pipe. After the hot air expansion tube 10 is made, a weld 12 along the length of the hot air expansion tube 10 will still be left. When the side beam structure 100 of the present application is installed on a vehicle, the weld 12 is located on the side of the hot air expansion tube 10 facing the bottom of the vehicle or the inside of the vehicle. Because the impact resistance of the weld 12 of the hot air expansion tube 10 is lower than the impact resistance of the non-weld 12, and when the vehicle is hit, the impact point is mostly located on the outside (side impact) and upper side (vehicle rollover) of the vehicle. In this way, the weld 12 of the hot air expansion tube 10 can avoid the position where the vehicle is easily hit, thereby enhancing the anti-collision ability of the vehicle.

[0051] like Figures 1 to 4 As shown, in an optional embodiment, when the side beam structure 100 of the present application is installed on a vehicle, a mounting hole 11 is provided on the side of the hot air expansion tube 10 facing the inner side of the vehicle, and the mounting hole 11 is used to install the interior of the vehicle, such as wiring harness and other components. The number of mounting holes 11 can be determined according to the actual needs of interior installation. The mounting holes 11 are arranged away from the connecting plate 20. Optionally, the minimum distance between the mounting hole 11 and the connecting plate 20 is greater than or equal to 2.5 mm, and the distance refers to the distance in the length direction of the hot air expansion tube 10. Optionally, the minimum distance between the mounting hole 11 and the connecting plate 20 can be 3 mm, 3.2 mm, 3.5 mm, 3.6 mm or 4 mm, etc. When the hot air expansion tube 10 is provided with the mounting hole 11, the weld 12 is located on the side of the hot air expansion tube 10 facing the lower side of the vehicle. The minimum distance between the mounting hole 11 and the weld 12 is greater than or equal to 2.5 mm. For example, the minimum distance between the mounting hole 11 and the weld 12 may be 3 mm, 3.2 mm, 3.5 mm, 3.6 mm or 4 mm.

[0052] like Figure 4 and Figure 5 As shown, the present application also discloses a vehicle frame structure, which includes an outer panel assembly 200, a roof crossbar 300 and the above-mentioned side beam structure 100. The outer panel assembly 200 is arranged on the outside of the side beam structure 100 and connected to the side beam structure 100. The roof crossbar 300 is connected to the connecting plate 20.

[0053] like Figures 2 to 4 As shown, the outer panel assembly 200 includes a side outer panel 210 and a reinforcing plate assembly 220. The side outer panel 210 is arranged on the outer side of the reinforcing plate assembly 220 and connected to the reinforcing plate assembly 220. The reinforcing plate assembly 220 is connected to the hot air expansion tube 10 by CMT (Cold Metal Transfer) technology. The welding point between the reinforcing plate assembly 220 and the hot air expansion tube 10 can be located on the upper side of the hot air expansion tube 10. There can be multiple welding points between the reinforcing plate assembly 220 and the hot air expansion tube 10, and the multiple welding points can be distributed on two different plate surfaces of the reinforcing plate assembly 220, so as to achieve a better connection between the reinforcing plate assembly 220 and the hot air expansion tube 10.

[0054] like Figures 2 to 4 As shown, in an optional embodiment, the vehicle frame structure also includes an interior mounting plate 400, and the interior mounting plate 400 is also provided with a plurality of holes (not shown) for installing interior trim. The interior mounting plate 400 is arranged on the inner side of the outer panel assembly 200 and connected to the outer panel assembly 200. The side beam structure 100 is located between the outer panel assembly 200 and the interior mounting plate 400. There is a gap between the interior mounting plate 400 and the hot air expansion tube 10. The gap between the interior mounting plate 400 and the hot air expansion tube 10 is greater than or equal to 2.5 mm. Optionally, the gap between the interior mounting plate 400 and the hot air expansion tube 10 can be 3 mm, 3.2 mm, 3.5 mm, 3.6 mm or 4 mm, etc. Optionally, a spacer (not shown) can be provided in the gap between the interior mounting plate 400 and the hot air expansion tube 10 to ensure the size of the gap. In this way, it can be ensured that the interior mounting plate 400 collides with the hot air expansion tube 10 during the driving of the vehicle and produces abnormal noise, thereby affecting the driving experience.

[0055] The interior decoration mounting plate 400 avoids the connecting plate 20. Specifically, the minimum distance between the interior decoration mounting plate 400 and the connecting plate 20 is greater than or equal to 2.5 mm. For example, the minimum distance between the interior decoration mounting plate 400 and the connecting plate 20 can be 3 mm, 3.2 mm, 3.5 mm, 3.6 mm or 4 mm. The hot air expansion tube 10 does not have a mounting hole 11 in the area corresponding to the interior decoration mounting plate 400. Specifically, the minimum distance between the interior decoration mounting plate 400 and the mounting hole 11 is greater than or equal to 2.5 mm. For example, the minimum distance between the interior decoration mounting plate 400 and the mounting hole 11 can be 3 mm, 3.2 mm, 3.5 mm, 3.6 mm or 4 mm. In this way, interference between the interior decoration mounting plate 400 and the connecting plate 20 is avoided, and redundant mounting holes 11 are avoided on the hot air expansion tube 10.

[0056] like Figures 2 to 5 As shown, in an optional embodiment, the vehicle frame structure includes at least one interior mounting plate 400. Optionally, only one interior mounting plate 400 may be provided, and the interior mounting plate 400 is provided at the connection position between the outer panel assembly 200 and the vehicle B-pillar 2000 and connected to the vehicle B-pillar 2000. Optionally, only one interior mounting plate 400 may be provided, and the interior mounting plate 400 is provided in the middle area of ​​the vehicle A-pillar 1000. That is, when the number of the interior mounting plate 400 is one, it may be installed at the connection position between the outer panel assembly 200 and the vehicle B-pillar 2000 or the middle area of ​​the vehicle A-pillar 1000. When the number of the interior mounting plates 400 is two, the connection position between the outer panel assembly 200 and the vehicle B-pillar 2000 and the middle area of ​​the vehicle A-pillar 1000 may each be provided with one interior mounting plate 400. Of course, the number of the interior mounting plates 400 may also be three or more, and the installation position thereof may also be changed according to actual needs.

[0057] The interior mounting plate 400 can be made of the same material as the hot air expansion tube 10. When the interior mounting plate 400 is arranged at the connection position between the outer panel assembly 200 and the vehicle B-pillar 2000, the interior mounting plate 400 includes a B-pillar connecting portion 410. The interior mounting plate 400 is connected to the B-pillar through the B-pillar connecting portion 410, and at the same time, the outer panel assembly 200 is also connected to the B-pillar 2000. In this way, the connection between the frame on the top of the vehicle and the vehicle B-pillar 2000 is more secure. When the interior mounting plate 400 is arranged in the middle area of ​​the vehicle A-pillar 1000, it is not only used to install the interior, but also can play a role in strengthening the A-pillar 1000. When the vehicle is hit, the middle area of ​​the vehicle's A-pillar 1000 is the most vulnerable area. The interior mounting plate 400 is arranged here to strengthen the structure and improve the vehicle's anti-collision ability.

[0058] The present application also discloses a vehicle, which comprises the above-mentioned vehicle frame structure.

[0059] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without causing conflicts. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the drawings; all modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of this application should be included in the scope of protection of this application.

Claims

1. A side beam structure, characterized in that: The side beam structure comprises: Hot air expansion tube; A connecting plate, the connecting plate is arranged around the outer periphery of the hot air expansion tube, and a part of the connecting plate extends away from the hot air expansion tube to be used for connecting the roof crossbeam; Wherein, the connecting plate is integrally formed on the outer periphery of the hot air expansion tube.

2. The side beam structure according to claim 1, characterized in that: The connecting plate includes a main body and an extension, wherein the main body is arranged around the periphery of the hot air expansion tube, one end of the extension is connected to the main body, and the other end extends outward and is used to connect to the roof beam; The extension portion extends outward from at least two locations of the main body portion and merges to form a support cavity together with the main body portion.

3. The side beam structure according to claim 1, characterized in that: The strength of the material of the connecting plate is lower than the strength of the material of the thermal expansion tube, and the rigidity of the material of the connecting plate is higher than the rigidity of the material of the thermal expansion tube.

4. The side beam structure according to claim 1, characterized in that: The hot gas expansion tube comprises a weld along its length direction, and the weld is located on a side of the hot gas expansion tube facing the lower side of the vehicle or the inner side of the vehicle.

5. The side beam structure according to claim 4, characterized in that: A mounting hole for mounting interior decoration is arranged on the side of the hot air expansion tube facing the interior of the vehicle, and the minimum distance between the mounting hole and the welding seam is greater than or equal to 2.5 mm.

6. A vehicle frame structure, characterized in that: The vehicle frame structure includes an outer panel assembly, a roof cross beam and a side beam structure as described in any one of claims 1 to 5; the outer panel assembly is arranged on the outside of the side beam structure and connected to the side beam structure; the roof cross beam is connected to the connecting plate.

7. The vehicle frame structure according to claim 6, characterized in that: The vehicle frame structure also includes an interior mounting plate, which is arranged on the inner side of the outer panel assembly and connected to the outer panel assembly; the side beam structure is located between the outer panel assembly and the interior mounting plate; a gap is set between the interior mounting plate and the hot air expansion tube, a spacer is set in the gap between the two, and the gap between the interior mounting plate and the hot air expansion tube is greater than or equal to 2.5 mm.

8. The vehicle frame structure according to claim 7, characterized in that: The vehicle frame structure includes at least one interior mounting plate, one interior mounting plate is arranged at the connection position between the outer panel assembly and the vehicle B-pillar and connected to the vehicle B-pillar; and / or one interior mounting plate is arranged in the middle area of ​​the vehicle A-pillar.

9. The vehicle frame structure according to claim 7, characterized in that: The minimum distance between the interior trim mounting plate and the connecting plate is greater than or equal to 2.5 mm; A mounting hole for mounting the interior decoration is arranged on the side of the hot air expansion tube facing the interior of the vehicle, and the minimum distance from the interior decoration mounting plate to the mounting hole on the hot air expansion tube is greater than or equal to 2.5 mm.

10. A vehicle, characterized in that: The vehicle comprises a vehicle frame structure as claimed in any one of claims 6 to 9.

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