Vehicle body profile assembly, manufacturing method of vehicle body profile assembly and vehicle

Abstract

The invention discloses a vehicle body profile assembly, a manufacturing method of the vehicle body profile assembly and a vehicle, the vehicle body profile assembly comprises a first profile piece, a second profile piece and a third profile piece, the first profile piece is provided with a connecting surface, and a connecting hole is formed in the connecting surface; the second sectional material piece comprises a main body part and a web plate part, one end of the main body part is a connecting end, the connecting end abuts against the connecting face, and the circumferential edge of the connecting end is fixedly connected with the connecting face; a connecting protrusion is arranged at the end, corresponding to the connecting end, of the web part, protrudes outwards relative to the connecting end and extends into the connecting hole, and the connecting protrusion is fixedly connected with the connecting hole. Therefore, the connecting protrusions are arranged in the vehicle body profile assembly and correspondingly connected with the connecting holes, so that the connecting position and the connecting area between the first profile piece and the second profile piece can be increased while the connecting ends and the connecting faces are connected and fixed, the strength of the vehicle body profile assembly can be enhanced, and the number of parts does not need to be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicles, and particularly to a body profile assembly, a manufacturing method of the body profile assembly, and a vehicle. Background Art

[0002] With the development of the automotive industry, the competition among automobile manufacturers is becoming increasingly fierce. Low-cost structural design is an important route to improve competitiveness. In most cases, "day" - shaped or "eye" - shaped profiles are used for the profile skeleton. Since the web is in a circumferentially enclosed cavity and the welding torch cannot reach it, only the circumference of the profile is welded. This results in low joint connection strength, and at critical body nodes, the body stiffness and strength cannot be guaranteed. Or when the body is subjected to collision forces, the weld seam is prone to failure. To improve the connection strength of the profile skeleton, in the prior art, a reinforcing plate is usually added at the welding position, or a casting joint is used to increase the weld bead.

[0003] [[ID=​​​​​​​​​​​​​​​​​​​According to some embodiments of the present invention, the circumferential edge of the connecting end is welded and fixed to the connecting surface, and the connecting protrusion is welded and fixed to the connecting hole.

[0010] According to some embodiments of the present invention, the protrusion thickness of the connecting protrusion relative to the connecting end is D, where D satisfies the relationship: 0.8mm < D < 1.2mm.

[0011] According to some embodiments of the present invention, the connecting hole extends in the left-right direction, and the two ends of the connecting protrusion in the left-right direction are respectively spaced apart from the two side walls of the connecting hole in the left-right direction. The distance between the left end of the connecting protrusion and the left side wall of the connecting hole is L1, and the distance between the right end of the connecting protrusion and the right side wall of the connecting hole is L2, where 2mm < L1 = L2 < 4mm.

[0012] According to some embodiments of the present invention, the two ends of the connecting protrusion in the vertical direction are respectively spaced apart from the two side walls of the connecting hole in the vertical direction. The distance between the upper end of the connecting protrusion and the upper side wall of the connecting hole is L3, and the distance between the lower end of the connecting protrusion and the lower side wall of the connecting hole is L4. L3 and L4 satisfy the relationship: 0.4mm < L3 = L4 < 0.6mm.

[0013] According to some embodiments of the present invention, there are multiple web portions, which are arranged vertically at intervals within the main body portion, and there are multiple connecting holes, which correspond one-to-one with the multiple web portions.

[0014] According to some embodiments of the present invention, the first profile has a process surface disposed opposite to the connecting surface, and a through hole is provided on the process surface, the through hole corresponding to the connecting hole.

[0015] A method for manufacturing a vehicle body profile assembly according to an embodiment of the present invention, suitable for the above-described vehicle body profile assembly, includes: abutting the connecting end of the second profile member against the connecting surface of the first profile member, and causing the connecting protrusion of the second profile member to extend into the connecting hole on the connecting surface; welding the circumferential edge of the connecting end to the connecting surface; and welding the connecting protrusion and the connecting hole by emitting a laser through a laser welding device.

[0016] According to some embodiments of the present invention, the step of welding the connecting protrusion and the connecting hole by means of a laser welding device further includes: the laser welding device moving in the left-right direction so that the laser welds the connecting protrusion and the connecting hole as a whole, wherein the connecting protrusion and the connecting hole both extend in the left-right direction.

[0017] The vehicle according to the present invention includes the body profile assembly described above.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic diagram of a vehicle body profile assembly according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a second profile according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the second profile component according to an embodiment of the present invention from another perspective;

[0023] Figure 4 This is a schematic diagram of the first profile component according to an embodiment of the present invention;

[0024] Figure 5 This is a partial cross-sectional view of a vehicle body profile assembly according to an embodiment of the present invention;

[0025] Figure 6 This is a manufacturing process diagram of a vehicle body profile assembly according to an embodiment of the present invention;

[0026] Figure 7 This is a flowchart of a method for manufacturing a vehicle body profile assembly according to an embodiment of the present invention.

[0027] Figure label:

[0028] 100. Body profile components;

[0029] 10. First profile component; 11. Connecting surface; 111. Connecting hole; 12. Process surface; 121. Through hole;

[0030] 20. Second profile; 21. Main body; 211. Connecting end; 22. Web; 221. Connecting protrusion;

[0031] 30. Laser welding equipment; 40. Weld bead. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present invention are described in detail below.

[0033] See the image below for reference. Figures 1-6The present invention describes a vehicle body profile assembly 100 according to an embodiment of the present invention. The vehicle body profile assembly 100 of the present invention is configured with a manufacturing method thereof. The vehicle body profile assembly 100 of the present invention can be applied to a vehicle.

[0034] Combination Figures 1-6 As shown, the vehicle body profile assembly 100 according to an embodiment of the present invention may mainly include: a first profile member 10 and a second profile member 20. The first profile member 10 has a connecting surface 11, on which a connecting hole 111 is provided. The connecting surface 11 can be used to connect the first profile member 10 to other structures, and similarly, the connecting hole 111 can also be used to connect the first profile member 10 to other structures. The connecting surface 11 can provide reliable support for other structures in the vehicle body profile assembly 100. Compared to the connecting surface 11, the connecting hole 111 can increase the connectable positions on the first profile member 10, which is beneficial to increasing the contact area between the first profile member 10 and other structures, thereby enhancing the strength of the vehicle body profile assembly 100.

[0035] Furthermore, the second profile 20 includes a main body portion 21 and a web portion 22. In an embodiment of the present invention, the main body portion 21 has a hollow structure, and the web portion 22 is disposed within the cavity of the main body portion 21. This not only reduces the weight of the second profile 20 but also enhances the structural strength of the second profile 20.

[0036] Furthermore, one end of the main body 21 is a connecting end 211, which abuts against the connecting surface 11 of the first profile 10, facilitating the connection between the first profile 10 and the second profile 20. The circumferential edge of the connecting end 211 is fixedly connected to the connecting surface 11, allowing the second profile 20 and the first profile 10 to be connected to form the body profile assembly 100, which can constitute the body frame. In addition, the force on the body can be transmitted between the first profile 10 and the second profile 20 through the connecting end 211 and the connecting surface 11, thus giving the body profile assembly 100 a certain structural strength and load-bearing capacity.

[0037] After the circumferential edge of the connecting end 211 is connected and fixed to the connecting surface 11, the web portion 22 inside the main body 21 is not connected and fixed to the connecting surface 11. The connection strength between the first profile 10 and the second profile 20 is weak, and the maximum stress that the body profile assembly 100 can withstand is limited, thus failing to meet the vehicle's requirements for body strength.

[0038] In an embodiment of the present invention, a connecting protrusion 221 is provided at one end of the web portion 22 corresponding to the connecting end 211. The connecting protrusion 221 protrudes outward from the cavity of the main body portion 21 relative to the connecting end 211, and the connecting protrusion 221 corresponds to the connecting hole 111 on the first profile member 10. Thus, when the connecting end 211 and the connecting surface 11 abut against each other, the connecting protrusion 221 can extend into the connecting hole 111, thereby connecting the web portion 22 to the first profile member 10. This increases the number of connection points between the second profile member 20 and the first profile member 10.

[0039] Furthermore, after the connecting end 211 and the connecting surface 11 abut against each other, the connecting protrusion 221 and the connecting hole 111 are both covered. This not only prevents the connecting protrusion 221 and the connecting hole 111 from occupying the interior space of the vehicle body, but also makes room for other structures in other vehicles, which is conducive to improving the structural compactness of the whole vehicle. In addition, it also prevents the connecting protrusion 221 and the connecting hole 111 from being exposed, which can ensure the appearance flatness of the body profile component 100.

[0040] Furthermore, the connection protrusion 221 is fixed to the connection hole 111, which can increase the contact area between the second profile 20 and the first profile 10. This can keep the web portion 22 stable in the second profile 20, and the force on the body profile assembly 100 can be transmitted between the connection surface 11 and the web portion 22, thereby improving the strength of the body profile assembly 100.

[0041] Furthermore, the connecting protrusion 221 protrudes outward compared to the connecting end 211, and the connecting hole 111 can be opened on the connecting surface 11. Both structures are relatively simple and easy to process in the body profile assembly 100 without increasing the production difficulty of the body profile assembly 100.

[0042] In addition, the arrangement of the connecting protrusion 221 and the connecting hole 111 does not increase the number of parts in the body profile assembly 100, nor does it increase the body weight or production cost, thus improving the economy of the body profile assembly 100.

[0043] According to an embodiment of the present invention, the circumferential edge of the connecting end 211 is welded and fixed to the connecting surface 11, and the connecting protrusion 221 is welded and fixed to the connecting hole 111. Specifically, the welding production method has advantages such as convenient operation and reliable connection. In the embodiment of the present invention, the circumferential edge of the connecting end 211 and the connecting surface 11, as well as the connecting protrusion 221 and the connecting hole 111, are all connected and fixed by welding, which not only simplifies the production method of the body profile assembly 100, but also ensures the structural strength of the body profile assembly 100.

[0044] In an embodiment of the present invention, the body profile assembly 100 is welded by a robotic arm, which requires little human intervention, has high welding precision, and can improve the production efficiency of the body profile assembly 100.

[0045] Combination Figure 2 As shown, the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 is D, where D satisfies the relationship: 0.8mm < D < 1.2mm. Specifically, setting the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 to be between 0.8mm and 1.2mm ensures that the connecting protrusion 221 protrudes outward from the cavity of the main body 21 relative to the connecting end 211. Simultaneously, the first profile 10 has a certain thickness. This arrangement ensures that the connecting protrusion 221 extends into the connecting hole 111 and corresponds at least partially to the connecting hole 111, allowing the connecting protrusion 221 to be connected and fixed to the connecting hole 111 by welding, thus ensuring the reliability of the connection between the connecting protrusion 221 and the connecting hole 111.

[0046] If the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 is less than 0.8mm, it will result in the connecting protrusion 221 being too thin, causing the portion of the connecting protrusion 221 extending into the connecting hole 111 to be too short. This will make the connecting protrusion 221 prone to detaching from the connecting hole 111, affecting the structural strength of the vehicle body profile assembly 100. Therefore, the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 is set to exceed 0.8mm.

[0047] In an embodiment of the present invention, the connecting protrusion 221 is milled using CNC machining on the second profile 20. If the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 exceeds 1.2 mm, it will result in an excessively large protrusion thickness of the connecting protrusion 221 relative to the connecting end 211. Conversely, this will cause an excessive reduction in the size of the second profile 20, thereby affecting the vehicle body profile assembly 100 and causing excessive errors, making assembly impossible. Therefore, the protrusion thickness of the connecting protrusion 221 relative to the connecting end 211 is set to not exceed 1.2 mm.

[0048] According to an embodiment of the present invention, in combination Figure 4 and Figure 5 As shown, the connecting hole 111 extends in the left and right direction. The two ends of the connecting protrusion 221 in the left and right directions are respectively spaced apart from the two side walls of the connecting hole 111 in the left and right directions. The distance between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111 is L1, and the distance between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111 is L2, where 2mm < L1 = L2 < 4mm.

[0049] Specifically, the length direction of the connecting hole 111 is... Figure 4As shown in the diagram, the connecting hole 111 is provided in the left-right direction, so that the shape of the connecting hole 111 corresponds to that of the connecting protrusion 221, which facilitates the insertion of the connecting protrusion 221 into the connecting hole 111. In addition, the two ends of the connecting protrusion 221 in the left-right direction are spaced apart from the two side walls of the connecting hole 111 in the left-right direction, and the distance between the left and right sides is equal. This arrangement allows the connecting protrusion 221 to be positioned in the middle of the connecting hole 111 in the left-right direction. This makes the force on the connecting protrusion 221 and the connecting hole 111 uniform, reduces stress concentration between the connecting hole 111 and the connecting protrusion 221, and helps to improve the connection strength between the connecting protrusion 221 and the connecting hole 111.

[0050] If at least one of the intervals between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111, and between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111, is less than 2mm, then the spacing between the left and right ends of the connecting protrusion 221 and the left and right side walls of the connecting hole 111 will not only fail to provide space for the non-welded surfaces of the left and right ends of the connecting protrusion 221 and the left and right side walls of the connecting hole 111, but will also impose stricter requirements on the installation accuracy of the connecting protrusion 221 and the connecting hole 111, making it inconvenient for the installation of the first profile 10 and the second profile 20. Therefore, the intervals between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111, and between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111, are both set to exceed 2mm.

[0051] If at least one of the distances between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111, and between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111, exceeds 4mm, the connecting hole 111 may become too large in the left-right direction, which would affect the structural strength of the connecting surface 11. Alternatively, the connecting protrusion 221 may become too small in the first direction, making it prone to breakage due to stress concentration during a vehicle collision, thus affecting the structural reliability of the vehicle body profile assembly 100. Therefore, the distances between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111, and between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111, are both set to not exceed 4mm.

[0052] Setting the distance between the left end of the connecting protrusion 221 and the left side wall of the connecting hole 111, and the distance between the right end of the connecting protrusion 221 and the right side wall of the connecting hole 111, both between 2mm and 4mm, allows the left and right ends of the connecting protrusion 221 to be spaced apart from the left and right side walls of the connecting hole 111. This not only allows space between the left and right ends of the connecting protrusion 221 and the left and right side walls of the connecting hole 111, but also improves the ease of installation of the connecting protrusion 221 into the connecting hole 111. Even if there is a certain error in the size of the connecting protrusion 221 and the connecting hole 111, installation can still be achieved. This helps to reduce the requirements for the installation accuracy of the connecting protrusion 221 and the connecting hole 111, and facilitates the production and processing of the vehicle body profile component 100.

[0053] According to an embodiment of the present invention, in combination Figure 3 and Figure 5 As shown, the two ends of the connecting protrusion 221 in the vertical direction are respectively spaced apart from the two side walls of the connecting hole 111 in the vertical direction. The distance between the upper end of the connecting protrusion 221 and the upper side wall of the connecting hole 111 is L3, and the distance between the lower end of the connecting protrusion 221 and the lower side wall of the connecting hole 111 is L4. L3 and L4 satisfy the relationship: 0.4mm < L3 = L4 < 0.6mm.

[0054] Specifically, the two ends of the connecting protrusion 221 in the vertical direction are spaced apart from the two side walls of the connecting hole 111 in the vertical direction, which facilitates the insertion of the connecting protrusion 221 into the connecting hole 111, thereby improving the installation convenience of the first profile 10 and the second profile 20. Setting the distance between the two ends of the connecting protrusion 221 and the upper and lower sides of the connecting hole 111 to be equal ensures that the connecting protrusion 221 is located in the middle of the connecting hole 111 in the vertical direction. This ensures that the force on the connecting protrusion 221 and the connecting hole 111 is even, reducing stress concentration between them and improving the connection strength.

[0055] If at least one of the following distances—the distance between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the distance between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111—is less than 0.4 mm, then the vertical distance between the connecting protrusion 221 and the connecting hole 111 will be too small, increasing the difficulty of mating the connecting protrusion 221 and the connecting hole 111. Therefore, the distance between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the distance between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111—is set to exceed 0.4 mm.

[0056] If the distance between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the distance between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111, exceed 0.6 mm, the vertical distance between the connecting protrusion 221 and the connecting hole 111 will be too large, increasing welding difficulty and material usage, and affecting the structural reliability of the weld 40. Therefore, the distance between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the distance between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111, should not exceed 0.6 mm.

[0057] The spacing between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the spacing between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111 are both set between 0.4mm and 0.6mm. This not only ensures that the connecting protrusion 221 can smoothly extend into the connecting hole 111, but also ensures the reliability of the weld bead 40 between the connecting protrusion 221 and the connecting hole 111.

[0058] Combination Figures 2-5 As shown, there are multiple web portions 22 and multiple connecting holes 111, with each connecting hole 111 corresponding to one of the multiple web portions 22. Specifically, in the embodiments of the present invention, the first profile 10 includes, but is not limited to, the front crossbeam of the bottom plate, and the first profile 10 extends laterally. The second profile 20 includes, but is not limited to, the longitudinal beam of the front engine compartment of the vehicle body, and the second profile 20 extends longitudinally. The multiple web portions 22 are arranged vertically and horizontally within the main body 21, and each web portion 22 extends longitudinally. This arrangement allows the multiple web portions 22 to be spaced apart from each other and collectively increase the structural strength of the second profile 20 in the longitudinal direction, thereby enabling the second profile 20 to withstand greater forces in the longitudinal direction and improving the structural strength of the vehicle body profile assembly 100.

[0059] The second profile 20 has multiple web portions 22, and multiple connecting holes 111 are provided on the connecting surface 11 of the first profile 10, corresponding one-to-one with the multiple web portions 22. This ensures that the connecting protrusion 221 on each web portion 22 can correspond to a connecting hole 111 on the connecting surface 11, so that each connecting protrusion 221 can be welded and fixed to the connecting hole 111. In this way, the connection strength between the first profile 10 and the second profile 20 can be further increased, thereby improving the structural strength of the vehicle body profile assembly 100, and enabling the vehicle body profile assembly 100 of the present invention to meet the strength requirements of the vehicle body frame.

[0060] Combination Figure 5 and Figure 6As shown, the first profile 10 has a process surface 12 opposite to the connecting surface 11, and a through hole 121 is provided on the process surface 12, corresponding to the connecting hole 111. Specifically, on the first profile 10, a process surface 12 is provided opposite to the connecting surface 11 in the longitudinal direction, and the process surface 12 and the connecting surface 11 are spaced apart. In the embodiment of the present invention, the connecting protrusion 221 and the connecting hole 111 can be welded by a laser beam. The through hole 121 is opened on the process surface 12 at the position corresponding to the connecting hole 111, so that the laser beam can pass through the through hole 121 and irradiate between the upper end of the connecting protrusion 221 and the upper sidewall of the connecting hole 111, and the laser beam can pass through the through hole 121 and irradiate between the lower end of the connecting protrusion 221 and the lower sidewall of the connecting hole 111. The through hole 121 is opened on the process surface 12, so that the laser beam avoids the second profile 20, which facilitates the welding operation of the connecting protrusion 221 and the connecting hole 111 and ensures the welding accuracy. In embodiments of the present invention, the position, diameter, and number of perforations 121 can be determined according to the position, size, and number of connecting holes 111.

[0061] According to an embodiment of the present invention, in combination Figure 6 and Figure 7 As shown, a method for manufacturing the body profile assembly 100 is provided. The method for manufacturing the body profile assembly 100 includes the following steps:

[0062] S1. The connecting end 211 of the second profile 20 abuts against the connecting surface 11 of the first profile 10, and the connecting protrusion 221 of the second profile 20 extends into the connecting hole 111 on the connecting surface 11.

[0063] S2. Weld the circumferential edge of the connecting end 211 to the connecting surface 11;

[0064] S3. The connecting protrusion 221 and the connecting hole 111 are welded by emitting a laser through the perforation 121 using laser welding equipment 30.

[0065] Specifically, in embodiments of the present invention, the first profile 10 includes, but is not limited to, the front crossbeam of the base plate, and the first profile 10 extends laterally; the second profile 20 includes, but is not limited to, the longitudinal beam of the front engine compartment of the vehicle body, and the second profile 20 extends longitudinally. Before the vehicle body profile assembly 100 is assembled, the connecting end 211 of the second profile 20 is milled by CNC machining, and the web portion 22 is retained. This allows the web portion 22 to protrude outward relative to the connecting end 211 to form a connecting protrusion 221.

[0066] Furthermore, a connecting hole 111 is made on the first profile 10 in the area corresponding to the web portion 22 using a laser cutting process, and a through hole 121 is then made on the process surface 12 of the first profile 10 at the position corresponding to the connecting hole 111. At this point, the assembly preparation work for the body profile assembly 100 is completed.

[0067] The first profile 10 and the second profile 20 are placed on the welding fixture in the process sequence, and the connecting end 211 of the second profile 20 abuts against the connecting surface 11 of the first profile 10 so that the connecting protrusion 221 of the second profile 20 extends into the connecting hole 111 on the connecting surface 11. Then the fixture is tightened. This ensures that the positions of the first profile 10 and the second profile 20 remain unchanged during the assembly process, and ensures the welding accuracy of the first profile 10 and the second profile 20.

[0068] Further, the connecting end 211 and the connecting surface 11 are welded. In embodiments of the present invention, the connecting end 211 and the connecting surface 11 can be welded around the perimeter or welded in sections around the perimeter. This step can determine the relative positions of the first profile 10 and the second profile 20.

[0069] Furthermore, the connecting protrusion 221 and the connecting hole 111 are welded using a laser welding device 30. The laser beam emitting end of the laser welding device 30 is aligned with the through hole 121, allowing the laser beam emitted by the laser welding device 30 to enter the first profile 10 and reach the positions of the connecting protrusion 221 and the connecting hole 111, forming a weld bead 40 between the connecting protrusion 221 and the connecting hole 111, thereby enabling the welding of the connecting protrusion 221 and the connecting hole 111.

[0070] Furthermore, after the connecting end 211 and the connecting surface 11 abut against each other, the connecting protrusion 221 and the connecting hole 111 are both covered, and the weld 40 between the connecting protrusion 221 and the connecting hole 111 is also covered. This can prevent the weld 40 from being exposed and make the appearance of the body profile assembly 100 smooth.

[0071] Combination Figure 7 As shown, step S3 further includes:

[0072] S3-1, The laser welding equipment 30 moves in the left and right direction so that the laser welds the connecting protrusion 221 and the connecting hole 111 as a whole, wherein the connecting protrusion 221 and the connecting hole 111 both extend in the left and right direction.

[0073] Specifically, both the connecting protrusion 221 and the connecting hole 111 extend in the left-right direction, and the weld bead 40 extends in the left-right direction and is located between the connecting protrusion 221 and the connecting hole 111 in the up-down direction. The laser welding device 30 is spaced apart from the through hole 121, and the laser beam emitted by the laser welding device 30 always starts from the laser welding device 30, passes through the through hole 121 and falls on the weld bead 40.

[0074] In an embodiment of the present invention, the laser welding device 30 can move in the left and right direction to form a weld bead 40 between the connecting protrusion 221 and the connecting hole 111, and ensure that the weld bead 40 extends in the left and right direction. This ensures that the weld bead 40 is connected to the connecting protrusion 221 and the connecting hole 111 in both the left and right directions, so that the laser can weld the connecting protrusion 221 and the connecting hole 111 as a whole, thereby ensuring the reliability of the connection between the connecting protrusion 221 and the connecting hole 111.

[0075] In an embodiment of the present invention, in order to ensure that the laser beam always falls on the weld bead 40, the laser welding equipment 30 moves in an arc shape in the left and right directions, and moves according to the predetermined welding process parameters and moving speed until a weld bead 40 is completed.

[0076] Furthermore, in an embodiment of the present invention, there are multiple connecting protrusions 221, which are spaced vertically. The laser welding equipment 30 can move vertically to complete the welding between each connecting protrusion 221 and each connecting hole 111.

[0077] After all connecting protrusions 221 and connecting holes 111 have been welded, the perforations 121 can be selectively sealed. The sealing methods for the perforations 121 include, but are not limited to, at least one of dry and wet methods. In addition, the perforations 121 can serve as electrophoretic shielding holes and leakage holes, which enables the perforations 121 to have functional integration, which helps to reduce the number of parts in the body profile assembly 100 and reduce the number of processing steps of the body profile assembly 100.

[0078] According to an embodiment of the present invention, a vehicle includes a body profile assembly 100 as described in this embodiment. The body profile assembly 100 of the present invention achieves this by providing a connecting protrusion 221 between a first profile member 10 and a second profile member 20, which corresponds to a connecting hole 111. This increases the connection position and the area of ​​the connecting surface 11 between the first profile member 10 and the second profile member 20 while simultaneously fixing the connecting end 211 to the connecting surface 11, thereby enhancing the strength of the body profile assembly 100 without increasing the number of parts. This design allows for lower development costs for the body profile assembly 100 in this embodiment, eliminates the need for subsequent component assembly processes, compresses vehicle production line processes, and reduces overall vehicle production costs while improving the strength of the vehicle body frame.

[0079] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0080] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A vehicle body profile component, characterized in that, include: A first profile (10) has a connecting surface (11) and a connecting hole (111) is provided on the connecting surface (11); The second profile (20) includes a main body (21) and a web (22). One end of the main body (21) is a connecting end (211). The connecting end (211) abuts against the connecting surface (11). The circumferential edge of the connecting end (211) is connected and fixed to the connecting surface (11). A connecting protrusion (221) is provided at one end of the web portion (22) corresponding to the connecting end (211). The connecting protrusion (221) protrudes outward relative to the connecting end (211) and extends into the connecting hole (111). The connecting protrusion (221) is connected and fixed to the connecting hole (111).

2. The vehicle body profile assembly according to claim 1, characterized in that, The circumferential edge of the connecting end (211) is welded and fixed to the connecting surface (11), and the connecting protrusion (221) is welded and fixed to the connecting hole (111).

3. The vehicle body profile assembly according to claim 1, characterized in that, The protrusion thickness of the connecting protrusion (221) relative to the connecting end (211) is D, and D satisfies the relationship: 0.8mm < D < 1.2mm.

4. The vehicle body profile assembly according to claim 1, characterized in that, The connecting hole (111) extends in the left-right direction. The two ends of the connecting protrusion (221) in the left-right direction are respectively spaced apart from the two side walls of the connecting hole (111) in the left-right direction. The distance between the left end of the connecting protrusion (221) and the left side wall of the connecting hole (111) is L1, and the distance between the right end of the connecting protrusion (221) and the right side wall of the connecting hole (111) is L2, where 2mm < L1 = L2 < 4mm.

5. The vehicle body profile assembly according to claim 1, characterized in that, The two ends of the connecting protrusion (221) in the vertical direction are respectively spaced apart from the two side walls of the connecting hole (111) in the vertical direction. The distance between the upper end of the connecting protrusion (221) and the upper side wall of the connecting hole (111) is L3, and the distance between the lower end of the connecting protrusion (221) and the lower side wall of the connecting hole (111) is L4. L3 and L4 satisfy the relationship: 0.4mm < L3 = L4 < 0.6mm.

6. The vehicle body profile assembly according to claim 1, characterized in that, There are multiple web plates (22), which are arranged vertically at intervals within the main body (21). There are multiple connecting holes (111), which correspond one-to-one with each of the multiple web plates (22).

7. The vehicle body profile assembly according to claim 1, characterized in that, The first profile (10) has a process surface (12) opposite to the connecting surface (11), and a through hole (121) is provided on the process surface (12), the through hole (121) corresponding to the connecting hole (111).

8. A method for manufacturing a vehicle body profile assembly, applicable to the vehicle body profile assembly (100) according to any one of claims 1-7, characterized in that, include: The connecting end (211) of the second profile (20) abuts against the connecting surface (11) of the first profile (10), and the connecting protrusion (221) of the second profile (20) extends into the connecting hole (111) on the connecting surface (11). The circumferential edge of the connecting end (211) is welded to the connecting surface (11); The connecting protrusion (221) and the connecting hole (111) are welded by emitting a laser through a hole (121) using a laser welding device (30).

9. The method for manufacturing a vehicle body profile assembly according to claim 8, characterized in that, The step of welding the connecting protrusion (221) and the connecting hole (111) by means of a laser welding device (30) through a through hole (121) further includes: The laser welding device (30) moves in the left-right direction so that the laser welds the connecting protrusion (221) and the connecting hole (111) as a whole, wherein the connecting protrusion (221) and the connecting hole (111) both extend in the left-right direction.

10. A vehicle, characterized in that, include: The vehicle body profile assembly (100) according to any one of claims 1-7.

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