Pillar structure, vehicle body frame, and vehicle
By using the optimized connection method of the hot gas expansion pipe and the connecting bracket in the vehicle column structure, the problem of insufficient strength and space utilization of the existing vehicle column structure is solved, and higher strength and better driving vision are achieved.
Patent Information
- Application Number
- CN202422022516.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-20
AI Technical Summary
The existing vehicle column structure has insufficient strength and space utilization, resulting in serious damage to the passenger compartment during collision and affecting the driving vision.
The hot gas expansion pipe and the connecting bracket are fixedly connected through connecting parts to optimize the connection structure between the hot gas expansion pipe and the connecting bracket, and enhance the strength of the column structure. At the same time, while ensuring strength, the width of the column is moderately reduced and the vision of the driver and passengers is enhanced.
It significantly improves the axial force, torsional ability and bending ability of the column structure, improves the field of vision during driving, and enhances the safety of the passenger compartment.
Smart Images
Figure CN222859560U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of vehicles, in particular to a column structure, a vehicle body frame and a vehicle. Background Art
[0002] As the number of components in the vehicle increases, the weight of the vehicle is also increasing, which leads to an increase in the collision energy of the vehicle. In actual events, such as rear-end collisions with large trucks, the passenger compartment is squeezed, resulting in a very high death rate for passengers. Therefore, today's vehicles have higher requirements for the passenger compartment's load-bearing capacity. The column structure of the vehicle is an important safety load-bearing component of the passenger compartment, and its strength directly affects the safety of the passenger compartment. The column structure of the vehicle will also affect the convenience of passengers entering and exiting and the driver's field of vision while driving.
[0003] The existing vehicle pillar structure is insufficient in terms of strength and space utilization. Utility Model Content
[0004] An object of the present application is to provide a pillar structure, a vehicle body frame, and a vehicle having high strength and high space utilization.
[0005] The present application discloses a column structure, which is applied to a vehicle body frame. The column structure comprises:
[0006] A hot air expansion tube, wherein the hot air expansion tube extends along the length direction of the column structure;
[0007] A connecting bracket, wherein the connecting bracket is provided with a first connecting hole and a second connecting hole; the first connecting hole and the second connecting hole are respectively provided on two plate surfaces of the connecting bracket, and the two plate surfaces are not coplanar;
[0008] A connecting piece, a part of which is fixedly connected to the connecting bracket, and another part of which enters the first connecting hole and the second connecting hole and is fixedly connected to the hot air expansion tube.
[0009] Optionally, the hot air expansion tube has at least two locations with different wall thicknesses.
[0010] Optionally, the wall thickness of the portion of the hot air expansion tube located between the lower plate of the A-pillar and the B-pillar is a first thickness;
[0011] The wall thickness of the portion of the hot air expansion tube located between the B-pillar and the C-pillar is the second thickness;
[0012] The first thickness is greater than the second thickness.
[0013] Optionally, the first thickness is between 2.3 mm and 2.7 mm; and / or,
[0014] The second thickness is between 1.2 mm and 1.6 mm.
[0015] Optionally, there are multiple first connection holes, and the multiple first connection holes are arranged on the connection bracket along the length direction of the column structure;
[0016] There are multiple second connection holes, and the multiple second connection holes are arranged on the connection bracket along the length direction of the column structure;
[0017] The distance between two adjacent first connection holes is a first distance, the distance between two adjacent second connection holes is a second distance, and the distance between adjacent first connection holes and second connection holes is a third distance; the first distance and the second distance are both greater than the third distance.
[0018] Optionally, the column structure also includes an inner panel assembly located on the side of the hot air expansion tube away from the connecting bracket; the inner panel assembly includes an A-pillar inner panel and an upper side beam inner panel; the A-pillar inner panel and the upper side beam inner panel are distributed along the length direction of the column structure and are interconnected; the A-pillar inner panel is arranged on the side of the upper side beam inner panel close to the head of the vehicle; the material strength of the A-pillar inner panel is greater than the material strength of the upper side beam inner panel.
[0019] Optionally, the number of the connecting brackets is multiple;
[0020] At least one of the connecting brackets is located in the middle of the column structure and serves as a B-pillar connecting bracket;
[0021] The hot air expansion tube comprises a connection section for connecting with the B-pillar connection bracket, and the position where the wall thickness of the hot air expansion tube changes is located in the connection section.
[0022] Optionally, the wall thickness of the hot air expansion tube at a portion corresponding to the A-pillar inner plate is a third thickness;
[0023] The wall thickness of the hot air expansion tube at the corresponding portion of the inner plate of the upper side beam is a fourth thickness;
[0024] The third thickness is greater than the fourth thickness.
[0025] Optionally, the outer diameter of the hot air expansion tube at each bracket connection position is smaller than the outer diameter of the hot air expansion tube at a non-bracket connection position.
[0026] Optionally, the circumference deformation rate of the hot air expansion tube is less than or equal to 10%.
[0027] The present application also discloses a vehicle body frame, which includes the above-mentioned column structure.
[0028] The present application also discloses a vehicle, which includes the vehicle body frame mentioned above.
[0029] Compared with the related art, the column structure of the present application is provided with a hot air expansion tube, and the hot air expansion tube is connected to the connection bracket by providing a connection hole and a connection piece, which optimizes the connection structure of the hot air expansion tube and the connection bracket, and greatly improves the strength of the column structure. At the same time, under the premise of ensuring sufficient strength, the width of the column can be appropriately reduced to improve the field of vision of the driver and passengers.
[0030] 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
[0031] 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.
[0032] Figure 1 This is a schematic diagram of the vehicle body frame structure in an example of the column structure of the present application.
[0033] Figure 2 This is an exploded schematic diagram of a column structure in one embodiment of the column structure of the present application.
[0034] Figure 3 This is a structural schematic diagram of a part of the column structure in an embodiment of the column structure of the present application.
[0035] Figure 4 for Figure 2 Schematic diagram of the structure after the central column structure is combined.
[0036] Figure 5 For along Figure 4 Schematic diagram of the cross section along line AA.
[0037] Figure 6 For along Figure 4 Schematic diagram of the cross section along line BB.
[0038] Figure 7 For along Figure 4 Schematic diagram of the cross section along the CC line.
[0039] Explanation of the reference numerals in the accompanying drawings: hot air expansion tube 100; first force transmission cavity 110; A-pillar connecting bracket 200; connecting hole 210; first connecting hole 211; second connecting hole 212; first flange 220; connecting piece 230; B-pillar connecting bracket 300; C-pillar connecting bracket 400; inner panel assembly 500; A-pillar inner panel 510; upper side beam inner panel 520; cross beam connecting plate 530; second flange 540; A-pillar lower panel 600; B-pillar 700; C-pillar 800; cross beam 900. DETAILED DESCRIPTION
[0040] 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.
[0041] 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.
[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the present application provides a column structure applied to a vehicle body frame, wherein the column structure includes a hot air expansion tube 100 , a connecting bracket and a connecting member 230 .
[0043] The hot air expansion tube 100 extends along the length direction of the column structure. The connecting bracket is provided with a first connecting hole 211 and a second connecting hole 212; the first connecting hole 211 and the second connecting hole 212 are respectively provided on two plate surfaces of the connecting bracket, and the two plate surfaces are not coplanar. A portion of the connecting member 230 is fixedly connected to the connecting bracket, and another portion of the connecting member 230 enters the first connecting hole 211 and the second connecting hole 212 and is fixedly connected to the hot air expansion tube 100.
[0044] The column structure 1000 of the present application is provided with a hot air expansion tube 100 and a connecting hole 210, and the number of the connecting holes 210 is multiple, wherein some of the connecting holes 210 are first connecting holes 211, and some of the connecting holes 210 are second connecting holes 212. The hot air expansion tube 100 is connected to the connecting bracket through the connecting hole 210 and the connecting piece 230, which optimizes the connection structure between the hot air expansion tube 100 and the connecting bracket, and greatly improves the strength of the column structure 1000. At the same time, under the premise of ensuring sufficient strength, the width of the column can be appropriately reduced to improve the field of vision of the driver and passengers. In particular, when the column structure 1000 is applied to the A-pillar, the width of the column can be appropriately reduced to improve the field of vision of the driver and passengers. In particular, when the column structure 1000 is applied to the A-pillar, the width of the A-pillar can be appropriately reduced, the blind area of the A-pillar can be reduced, and the driver's field of vision can be improved when driving.
[0045] The following will describe in detail various embodiments of the present application that are consistent with the above-mentioned creative concepts.
[0046] like Figure 1 and Figure 2 As shown, an embodiment of the present application discloses a column structure 1000. The column structure 1000 includes a hot air expansion tube 100, a connecting bracket and an inner panel assembly 500. Among them, the connecting bracket is arranged on the outer side of the inner panel assembly 500 and connected to the inner panel assembly 500. The inside and outside here are referenced to the vehicle. The space for the driver and passengers of the vehicle is the inner side mentioned above, and the outside of the vehicle is the outer side mentioned above. The hot air expansion tube 100 is arranged between the connecting bracket and the inner panel assembly 500 along the length direction of the column structure 1000, and the hot air expansion tube 100 is connected to the connecting bracket. The number of connecting brackets can be one or more. When there are multiple connecting brackets, at least one of the connecting brackets is provided with a connecting hole 210 in the above-mentioned manner.
[0047] like Figures 2 to 4 As shown, in an optional embodiment, the number of connecting brackets is multiple, at least one connecting bracket is located at the front end of the column structure and serves as the A-pillar connecting bracket 200, at least one connecting bracket is located in the middle of the column structure and serves as the B-pillar connecting bracket 300, and at least one connecting bracket is located at the rear end of the column structure and serves as the C-pillar connecting bracket 400. The front and rear here refer to the vehicle, the direction toward the front of the vehicle is defined as the front, and the direction toward the rear of the vehicle is defined as the rear. The column structure 1000 is connected to the A-pillar lower plate 600, the B-pillar 700, and the C-pillar 800 through the A-pillar connecting bracket 200, the B-pillar connecting bracket 300, and the C-pillar connecting bracket 400, respectively. The A-pillar connecting bracket 200, the B-pillar connecting bracket 300, and the C-pillar connecting bracket 400 are all provided with a connecting hole 210 and a first flange 220. The A-pillar connecting bracket 200, the B-pillar connecting bracket 300, and the C-pillar connecting bracket 400 have different shapes, and the shape of the connecting bracket at each position is adapted to the frame structure of the vehicle at that position.
[0048] like Figure 2 and Figure 5 As shown, in an optional embodiment, the connecting bracket includes a first flange 220 located at the edge of the connecting bracket, and the inner panel assembly 500 includes a second flange 350 located at the edge of the inner panel assembly 500. Specifically, a long side of the connecting bracket close to the lower side of the vehicle and a long side close to the upper side of the vehicle are both provided with the first flange 220, and a long side of the inner panel assembly 500 close to the lower side of the vehicle and a long side close to the upper side of the vehicle are both provided with the second flange 540. The connecting bracket and the inner panel assembly 500 are connected by welding the first flange 220 and the second flange 540. Optionally, the size of the first flange 220 and the second flange 540 can be greater than 15 mm to ensure that the connection between the connecting bracket and the inner panel assembly 500 is sufficiently firm.
[0049] like Figures 2 to 4As shown, the hot air expansion tube 100 is disposed between the connecting bracket and the inner panel assembly 500 along the length direction of the column structure 1000. The hot air expansion tube 100 itself has a first force transmission cavity 110 with a closed cross section.
[0050] The hot air expansion tube 100 is manufactured by a hot air expansion process. The hot air expansion process includes the steps of tube making-tube bending-die pre-pressing-blank heating-die clamping-inflating hot expansion-cooling quenching-laser cutting. Among them, in the tube making link, materials of different materials and thicknesses are selected to make seamless tubes. For example, a steel plate can be selected as the blank, and then the finished seamless steel pipe is obtained through uncoiling-shearing welding-loop-leveling-forming-welding scraping-cooling-finishing-speed measurement-straightening-tube cutting and blanking. In the tube bending link, the manufactured seamless steel pipe is placed in a special tube bending mold, and a bending torque is applied to the pipe through hydraulic or electric drive to form it into the desired bending shape. In the mold pre-pressing link, the bent seamless pipe is placed in the inner cavity of the mold, and the pipe is pre-formed by clamping and pressing the upper and lower molds, so that it is initially formed into the desired shape, which is convenient for the subsequent hot air expansion mold to enter the mold. 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. In the mold closing and pressing stage, the heated pipe is placed in the closed mold cavity and high pressure is applied to further form the pipe into the desired final shape under the action of the mold. In the inflation hot expansion stage, high-pressure gas is injected into the mold cavity. Optionally, the pressure of the high-pressure gas can be around 50Mpa-70Mpa. The outer surface of the part is fitted with the mold through the expansion of the inner cavity to form the final shape of the part. In the cooling and quenching stage, the formed pipe is taken out of the mold and subjected to rapid cooling treatment such as water quenching or oil quenching. The part is quickly cooled and quenched through the mold water channel to form a martensitic structure. In the laser cutting stage, laser cutting removes excess material of the part, forms holes and edges, and thus forms the final part state. During the preparation process, various parameters are controlled so that the deformation rate of the cross-sectional perimeter of the hot-expandable tube 100 after expansion is less than or equal to 10%. Preferably, the change rate of the cross-sectional perimeter of the hot-expandable tube 100 after expansion is controlled at 7%-10%. The change rate of the cross-sectional perimeter of the hot-expandable tube 100 refers to the difference between the perimeter of the cross-sectional perimeter of the hot-expandable tube 100 with the longest perimeter and the perimeter of the cross-sectional perimeter of the hot-expandable tube 100 with the shortest perimeter, divided by the perimeter of the cross-sectional perimeter of the hot-expandable tube 100 with the shortest perimeter. The strength of the material used in the hot-expandable tube 100 of the present application can reach about 2Gpa.
[0051] like Figure 2 , Figure 3 and Figures 5 to 7As shown, the connecting bracket is provided with a connecting hole 210. The column structure 1000 also includes a connecting piece 230, a part of which is fixedly connected to the connecting bracket, and another part of the connecting piece 230 enters the connecting hole 210 and is fixedly connected to the hot air expansion tube 100. In the process of manufacturing the column structure 1000, the connecting bracket and the hot air expansion tube 100 are first fixedly connected by the connecting piece 230. Specifically, at least a part of the connecting piece 230 enters the connecting hole 210 and is fixedly connected to the hot air expansion tube 100, and the other part is fixedly connected to the connecting bracket through the wall surface of the connecting hole 210 and / or the end surface of the connecting bracket away from the hot air expansion tube 100. After that, the connecting bracket is connected to the inner plate assembly 500. Optionally, the connecting hole 210 can be an elliptical hole of 6*12mm or a hole of other shapes with an area equivalent to the elliptical hole of 6*12mm. The hole of this size ensures the connection strength of the connecting bracket and the hot air expansion tube 100 without affecting the strength of the connecting bracket. In this embodiment, the connection bracket and the hot air expansion tube 100 can be connected by welding, and in this case, the connection member 230 can be solder. Of course, in other embodiments, the connection bracket and the hot air expansion tube 100 can also be connected by bonding, and in this case, the connection member 230 can be some kind of viscous material. The hot air expansion tube 100 and the connection hole 210 and the connection bracket around the connection hole 210 have an overlap of at least 7 mm to make welding more convenient and stable.
[0052] The number of the connection holes 210 can be multiple, and the multiple connection holes 210 are arranged on the connection bracket along the length direction of the column structure 1000. Some of the connection holes 210 in the multiple connection holes 210 are first connection holes 211, and some of the connection holes 210 are second connection holes 142. The first connection hole 211 and the second connection hole 212 are respectively arranged on two adjacent plate surfaces of the connection bracket, and the two plate surfaces are not coplanar. In this embodiment, the number of the first connection holes 211 and the second connection holes 212 are both multiple. Specifically, the multiple first connection holes 211 are arranged on a plate surface of the connection bracket along the length direction of the column structure 1000. The multiple second connection holes 212 are arranged on a plate surface of the connection bracket adjacent to the first connection holes 211 along the length direction of the column structure 1000. In this way, the connection holes 210 are arranged, and the connection strength between the connection bracket and the hot air expansion tube 100 is strengthened by the connection points staggered in space, and the connection holes 210 are distributed on two surfaces to prevent the excessive concentration of heat during welding, which causes the connection bracket and the hot air expansion tube 100 to deform too much.
[0053] Optionally, the distance between two adjacent first connection holes 211 among the plurality of first connection holes 211 is the first distance, the distance between two adjacent second connection holes 212 among the plurality of second connection holes 212 is the second distance, and the distance between adjacent first connection holes 211 and second connection holes 212 is the third distance. The first distance is equal to the second distance, and the first distance is greater than the second distance. This arrangement not only ensures that the connection bracket and the hot air expansion tube 100 have a certain connection strength at each position, but also prevents the connection bracket and the hot air expansion tube 100 from being deformed too much due to excessive heat concentration during welding caused by too many connection holes 210. The equality here may be equality in a non-strict sense. Due to process and other reasons, the first distance and the second distance may have a certain error, and the difference between the two is less than 10%, which can be understood as the two being equal. Specifically, for example, the first distance and the second distance can be any value between 200mm-300mm, and the third distance can be any value between 40-50mm.
[0054] The distance between the hot air expansion tube 100 and the connecting bracket is relatively close at the portion close to the connecting hole 210, and the hot air expansion tube 100 is fixedly connected to the connecting bracket by the connecting piece 230. The hot air expansion tube 100 maintains a certain distance from the connecting bracket at other positions away from the connecting hole 210. Each part of the hot air expansion tube 100 maintains a certain distance from the inner panel assembly 500. The average distance between the hot air expansion tube 100 and the connecting bracket is greater than the average distance between the hot air expansion tube 100 and the inner panel assembly 500. That is, the hot air expansion tube 100 is located on the side closer to the connecting bracket. In this way, the inner panel assembly 500 can have more space for the installation of structures such as interior decoration, wiring harness, and restraint system.
[0055] The inner panel assembly 500 may include an A-pillar inner panel 510, an upper side beam inner panel 520, and a cross beam connecting plate 530. The A-pillar inner panel 510 and the upper side beam inner panel 520 are distributed along the length direction of the inner panel assembly 500 and are connected to each other. The A-pillar inner panel 510 is closer to the head of the vehicle relative to the upper side beam inner panel 520. The cross beam connecting plate 530 is connected to one side of the A-pillar inner panel 510 close to the rear of the vehicle. The A-pillar inner panel 510 is connected and fixed to the cross beam 900 of the vehicle through the cross beam connecting plate 530. The material strength of the A-pillar inner panel 510 is greater than the material strength of the upper side beam inner panel 520. For example, the A-pillar inner panel 510 can be formed by hot stamping using a 1500Mpa material, and the upper side beam inner panel 520 can be formed by cold stamping using a 590Mpa material. In this way, the A-pillar inner panel 510 can be designed to be narrower than the upper side beam inner panel 520, so that the cab has a better driving vision. The A-pillar inner panel 510 and the upper side beam inner panel 520 are both provided with a second flange 540 , and the second flanges 540 of the A-pillar inner panel 510 and the upper side beam inner panel 520 together constitute the second flange 540 structure of the entire inner panel assembly 500 .
[0056] The thickness of at least two parts of the hot air expansion tube 100 is different. Specifically, the cross-sectional width, thickness, strength and material of each part of the hot air expansion tube 100 can be customized according to actual needs. For example, in the pipe making process, different blanks such as cross-sectional width, thickness, strength and material can be selected, and then cut, welded and made into seamless pipes with different cross-sectional width, thickness, strength and material in the subsequent steps, and then made into hot air expansion tubes 100 with different cross-sectional width, thickness, strength and material. For another example, different molds can be designed in the mold pre-pressing-blank heating-mold closing-pressing-inflation hot expansion process to obtain hot air expansion tubes 100 with different cross-sectional widths and thicknesses in each part. Since the cross-sectional width, thickness and material of each part of the hot air expansion tube 100 can be customized, the strength of each part can naturally be customized.
[0057] For example, in an optional embodiment, the wall thickness of the portion of the hot air expansion tube 100 located between the A-pillar lower plate 600 and the B-pillar 700 is the first thickness. The wall thickness of the portion of the hot air expansion tube 100 located between the B-pillar 700 and the C-pillar 800 is the second thickness. The first thickness is greater than the second thickness. Specifically, the first thickness may be between 2.3 mm and 2.7 mm, and the second thickness may be between 1.2 mm and 1.6 mm. Optionally, the hot air expansion tube 100 includes a connecting section (not shown) for connecting to the connecting bracket, and the position where the wall thickness of the hot air expansion tube 100 changes is located in the connecting section connected to the B-pillar connecting bracket 300.
[0058] For another example, in an optional embodiment, the wall thickness of the hot air expansion tube 100 corresponding to the A-pillar inner plate 510 is the third thickness, and the wall thickness of the hot air expansion tube 100 corresponding to the upper side beam inner plate 520 is the fourth thickness. The third thickness is greater than the fourth thickness.
[0059] When a vehicle collides, the A-pillar of the vehicle is the most vulnerable area. The first thickness is greater than the second thickness, or the third thickness is greater than the fourth thickness, which strengthens the A-pillar area of the vehicle and improves the safety of the cockpit.
[0060] In an optional embodiment, the outer diameter of the hot-expanded tube 100 at each bracket connection position is smaller than the outer diameter of the hot-expanded tube 100 at the non-bracket connection position. For example, the hot-expanded tube 100 includes a connection section (not shown) for connecting to the connection bracket, and the outer diameter of the hot-expanded tube 100 in the connection section is smaller than the outer diameter of the non-connected section. In this way, the space of the column structure 1000 can be more fully utilized. The overall strength of the column structure 1000 can be made stronger in a limited space. Optionally, the shape and thickness of the hot-expanded tube 100 at the corresponding positions of the A-pillar connection bracket 200, the B-pillar connection bracket 300 and the C-pillar connection bracket 400 are also different. For example, from the A-pillar connection bracket 200 to the C-pillar connection bracket 400, the diameter and thickness of the hot-expanded tube 100 can be reduced in sequence. Due to the change in the diameter of the hot-expanded tube 100, the setting of the connection hole 210 on the A-pillar connection bracket 200, the B-pillar connection bracket 300 and the C-pillar connection bracket 400 may also be different. For example, the distance between two adjacent first connection holes 211 among the plurality of first connection holes 211 is the first distance, the distance between two adjacent second connection holes 212 among the plurality of second connection holes 212 is the second distance, and the distance between adjacent first connection holes 211 and second connection holes 212 is the third distance. The first distance, the second distance, and the third distance decrease sequentially from the A-pillar connection bracket 200 to the C-pillar connection bracket 400. That is, for the A-pillar connection bracket 200, the B-pillar connection bracket 300, and the C-pillar connection bracket 400 of the same length, the number of connection holes 210 arranged decreases sequentially.
[0061] The column structure 1000 of the present application is provided with a hot air expansion tube 100, and the hot air expansion tube 100, the connecting bracket and the inner plate assembly 500 together constitute the column structure 1000, which is improved by 20%-30% in anti-axial force, 35%-40% in torsion capacity, and 10%-20% in bending capacity compared with the column structure without the hot air expansion tube 100. At the same time, the present application adopts a high-strength A-pillar inner plate 510 and a thicker hot air expansion tube 100 from the position of the rearview mirror to the position of the upper side beam, so that the column structure 1000 in this section can be made narrower, greatly improving the field of vision during driving. In addition, the hot air expansion tube 100 of the present application runs from the position of the rearview mirror to the connection position of the upper side beam C-pillar, which increases the integration of the body frame, so that when the vehicle is hit, the energy of the collision can be better transmitted to the entire body frame. Compared with the traditional body frame assembled by welding, the present application can better realize the overall force of the body and avoid local damage caused by local force.
[0062] In the above embodiment, the column structure 1000 is applied to the A-pillar structure. Of course, in other embodiments, the column structure 1000 can also be applied to the B-pillar or the cross beam on the vehicle frame, which can also reduce the width of the column and improve the field of vision of the driver and passengers.
[0063] The present application also discloses a vehicle body frame, which includes the above-mentioned column structure.
[0064] The present application also discloses a vehicle, which includes the vehicle body frame mentioned above.
[0065] 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 column structure, applied to a vehicle body frame, characterized in that: The column structure comprises: A hot air expansion tube, wherein the hot air expansion tube extends along the length direction of the column structure; A connecting bracket, wherein the connecting bracket is provided with a first connecting hole and a second connecting hole; the first connecting hole and the second connecting hole are respectively provided on two plate surfaces of the connecting bracket, and the two plate surfaces are not coplanar; A connecting piece, a part of which is fixedly connected to the connecting bracket, and another part of which enters the first connecting hole and the second connecting hole and is fixedly connected to the hot air expansion tube.
2. The column structure according to claim 1, characterized in that The hot air expansion tube has at least two locations with different wall thicknesses.
3. The column structure according to claim 2, characterized in that: The wall thickness of the portion of the hot air expansion tube located between the lower plate of the A-pillar and the B-pillar is a first thickness; The wall thickness of the portion of the hot air expansion tube located between the B-pillar and the C-pillar is the second thickness; The first thickness is greater than the second thickness.
4. The column structure according to claim 3, characterized in that: The first thickness is between 2.3 mm and 2.7 mm; and / or, The second thickness is between 1.2 mm and 1.6 mm.
5. The column structure according to claim 1, characterized in that There are a plurality of first connection holes, and the plurality of first connection holes are arranged on the connection bracket along the length direction of the column structure; There are multiple second connection holes, and the multiple second connection holes are arranged on the connection bracket along the length direction of the column structure; The distance between two adjacent first connection holes is a first distance, the distance between two adjacent second connection holes is a second distance, and the distance between adjacent first connection holes and second connection holes is a third distance; the first distance and the second distance are both greater than the third distance.
6. The column structure according to claim 1, characterized in that The column structure also includes an inner panel assembly located on the side of the hot air expansion tube away from the connecting bracket; the inner panel assembly includes an A-pillar inner panel and an upper side beam inner panel; the A-pillar inner panel and the upper side beam inner panel are distributed along the length direction of the column structure and are connected to each other; the A-pillar inner panel is arranged on the side of the upper side beam inner panel close to the head of the vehicle; the material strength of the A-pillar inner panel is greater than the material strength of the upper side beam inner panel.
7. The column structure according to claim 2, characterized in that: The number of the connecting brackets is multiple; At least one of the connecting brackets is located in the middle of the column structure and serves as a B-pillar connecting bracket; The hot air expansion tube comprises a connection section for connecting with the B-pillar connection bracket, and the position where the wall thickness of the hot air expansion tube changes is located in the connection section.
8. The column structure according to claim 6, characterized in that The wall thickness of the hot air expansion tube at the corresponding portion of the A-pillar inner plate is the third thickness; The wall thickness of the hot air expansion tube at the corresponding portion of the inner plate of the upper side beam is a fourth thickness; The third thickness is greater than the fourth thickness.
9. The column structure according to claim 1, characterized in that The outer diameter of the hot air expansion tube at each bracket connection position is smaller than the outer diameter of the hot air expansion tube at a non-bracket connection position.
10. The column structure according to claim 8, characterized in that The circumference deformation rate of the hot air expansion tube is less than or equal to 10%.
11. A vehicle body frame, characterized in that: The vehicle body frame includes the pillar structure according to any one of claims 1-10.
12. A vehicle, characterized in that: The vehicle includes the vehicle body frame as claimed in claim 11 .