Front longitudinal beam structure, front longitudinal beam assembly and vehicle

Abstract

The utility model relates to the technical field of vehicle body beam structures, and provides a front longitudinal beam structure, a front longitudinal beam assembly and a vehicle, the front longitudinal beam structure comprises a beam body, the beam body is provided with a first edge side part and a second edge side part opposite to the first edge side part, and the second edge side part is connected to the inner wall of the beam body and / or the first edge side part. Therefore, the beam body is bent and forms a hollow tubular structure in an enclosing mode. According to the front longitudinal beam structure provided by the utility model, the whole plate is bent and curled to form the beam body, so that the second edge side parts which are oppositely arranged are close to the first edge side parts, the second edge side parts are connected with the first edge side parts and / or the inner wall of the beam body, and finally, the beam body is bent and wound to form a hollow tubular structure. Thus, the front longitudinal beam structure provided by the embodiment of the utility model is a continuous hollow pipe body structure with only one connecting point, the structural strength of the front longitudinal beam structure is higher, and the energy absorption efficiency is higher when the front longitudinal beam structure is subjected to external collision impact.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle body beam structures, and in particular provides a front longitudinal beam structure, a front longitudinal beam assembly and a vehicle. Background Art

[0002] The front longitudinal beam structure has an important impact on the vehicle's collision safety, body mode, body stiffness, etc., especially when a head-on collision occurs during vehicle driving. The vehicle's front longitudinal beam structure plays a vital role in transmitting and absorbing the impact force and impact energy, and reducing injuries to the driver and passengers. At the same time, the vehicle's front longitudinal beam structure also has the function of sharing the load-bearing layout of components such as the engine or motor, and electronic control in the vehicle's front cabin.

[0003] However, in the relevant technical field, the structural design of the front longitudinal beam has corresponding defects. When the vehicle collides head-on, the deformation mode of the front longitudinal beam structure is not ideal and cannot effectively transmit the collision force and collision energy. Overall, this will lead to low energy absorption efficiency of the front longitudinal beam structure. Utility Model Content

[0004] The purpose of the utility model is to provide a front longitudinal beam structure, a front longitudinal beam assembly and a vehicle, aiming to solve the problem of low energy absorption efficiency of the existing front longitudinal beam structure during a collision.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] In a first aspect, an embodiment of the present application provides a front longitudinal beam structure, comprising:

[0007] The beam body has a first edge side portion and a second edge side portion arranged opposite to the first edge side portion, the second edge side portion is connected to the inner wall of the beam body and / or the first edge side portion, and the beam body is a hollow tubular structure.

[0008] Beneficial effects of the present invention: The front longitudinal beam structure provided by the present invention is a beam body formed by bending and curling a whole plate, so that the second edge side portion arranged opposite to each other is close to the first edge side portion, and the second edge side portion is connected to the first edge side portion, or the second edge side portion is connected to the inner wall of the beam body, or the second edge side portion is connected to the inner wall of the beam body and the first edge side portion. Finally, the beam body is bent and curled to form a hollow tubular structure. In this way, the front longitudinal beam structure provided by the embodiment of the present application is a hollow tubular structure with only one connection point and a continuous structure. Its structural strength is higher, and its energy absorption efficiency is higher when subjected to external collision impact.

[0009] In one embodiment, the second edge portion is continuously connected to the inner wall of the beam body and / or the first edge portion.

[0010] By adopting the above technical solution, a continuous connection is achieved so that there is no gap between the second edge side portion and the first edge side portion and / or the inner wall of the beam body, or the size of the gap can be ignored. Therefore, structurally, the hollow tubular structure is continuous and is not easily collapsed when subjected to external collision impact, and has better energy absorption effect and higher energy absorption efficiency.

[0011] In one embodiment, the second edge portion is continuously connected to the inner wall of the beam body and / or the first edge portion by welding.

[0012] By adopting the above technical solution, the welding process is less complicated and the production efficiency is higher, which can meet the continuous connectivity requirements between the second edge side and the first edge side and / or the inner wall of the beam body.

[0013] In one embodiment, the hollow tubular structure comprises at least a first tube segment, a second tube segment, a third tube segment and a fourth tube segment which are sequentially connected end to end.

[0014] By adopting the above technical solution, the cross-section of the hollow tubular structure is at least a quadrilateral structure. In addition to meeting the connection requirements with other components, its structural strength is also relatively high.

[0015] In one embodiment, the first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment together form the hollow tubular structure with a square cross-section.

[0016] By adopting the above technical solution, the hollow tubular structure with a square cross-section has higher structural strength, especially in its height direction, and is not easily crushed and deformed.

[0017] In one embodiment, the third pipe segment includes a middle segment and extension segments respectively connected to opposite ends of the middle segment. Each extension segment is inclined relative to the middle segment at one end away from the middle segment and is respectively connected to the second pipe segment and the fourth pipe segment.

[0018] By adopting the above technical solution, the connection between the third pipe segment and the second pipe segment, as well as the connection between the third pipe segment and the fourth pipe segment are designed to be at an oblique angle, thereby increasing the cross-sectional force of the lower surface of the front longitudinal beam structure to suppress the tendency of the front longitudinal beam to bend downward during a collision.

[0019] In one embodiment, the second edge portion is connected to the inner wall of the beam body, and the first edge portion extends outward away from the second edge portion; or

[0020] The second edge side portion is connected to the first edge side portion, and the second edge side portion and the first edge side portion extend outward together.

[0021] By adopting the above technical solution, a structure part protruding outward will be formed on the outer surface of the front longitudinal beam structure in a hollow tubular structure, and the protruding structure part can be used to provide corresponding connection points for connecting with other beams or components of the vehicle body.

[0022] In one embodiment, the front longitudinal beam structure further includes a plurality of crush ribs, and each of the crush ribs is respectively arranged on the second pipe section and / or the fourth pipe section.

[0023] By adopting the above technical solution, the crush ribs are further used to absorb the kinetic energy during a collision, so as to improve the energy absorption efficiency of the front longitudinal beam structure.

[0024] In a second aspect, an embodiment of the present application provides a front longitudinal beam assembly, including the above-mentioned front longitudinal beam structure.

[0025] Advantageous effects of the present utility model: The front longitudinal beam assembly provided by the present utility model has higher structural strength and energy absorption efficiency on the basis of having the above front longitudinal beam structure.

[0026] In a third aspect, an embodiment of the present application provides a vehicle, including the above-mentioned front longitudinal beam assembly.

[0027] Advantageous effects of the present utility model: The vehicle provided by the present utility model can have better frontal collision performance on the basis of having the above front longitudinal beam assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a schematic structural diagram of the front longitudinal beam structure provided by an embodiment of the present utility model;

[0030] Figure 2 It is a sectional view of the front longitudinal beam structure provided by an embodiment of the present utility model;

[0031] Figure 3 It is a schematic structural diagram of the front longitudinal beam assembly provided by an embodiment of the present utility model;

[0032] Figure 4 It is a schematic structural diagram of the vehicle provided by an embodiment of the present utility model.

[0033] Among them, each reference numeral in the figure:

[0034] 1000. Vehicle;

[0035] 100. Front longitudinal beam assembly; 200. Wheel; 300. Battery device; 400. Motor;

[0036] 10. Front longitudinal beam structure; 11. Beam body; 11a. First flange side part; 11b. Second flange side part; 10a. First pipe section; 10b. Second pipe section; 10c. Third pipe section; 10d. Fourth pipe section; 10c1. Intermediate section; 10c2. Extension section; 12. Crashing rib. Detailed implementation mode

[0037] The embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present utility model and should not be construed as limiting the present utility model.

[0038] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0039] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0040] In the present utility model, unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0041] The front longitudinal beam structure has an important impact on the collision safety, body mode, body stiffness, etc. of the vehicle. Especially when a frontal collision occurs during vehicle driving, the front longitudinal beam structure of the vehicle plays a crucial role in transmitting and absorbing impact force and impact energy, reducing the injuries of the driver and passengers. At the same time, the front longitudinal beam structure of the vehicle also has the function of sharing the load-bearing layout of components such as the engine, motor, and electronic control in the front compartment of the vehicle.

[0042] In the related technical field, the front longitudinal beam usually includes a beam main body and a cover plate covering the beam main body. The beam main body is bent to form a bending part with a groove structure, and the cover plate is covered on the beam main body and seals the open end of the groove structure. Finally, a front longitudinal beam with a hollow structure is enclosed. Here, the connection method between the cover plate and the beam main body is mostly spot welding or riveting. In this way, a structural gap is formed between adjacent two welding points or riveting points, resulting in the discontinuous overall structure of the front longitudinal beam and low energy absorption efficiency.

[0043] In view of this, the embodiment of the present application provides a front longitudinal beam structure. This front longitudinal beam structure includes a beam body. The beam body is bent and wound, and then the second edge side part of the bent and wound beam body is connected to the first edge side part and / or the inner wall of the beam body. In this way, compared with the traditional covering connection method, there are two connection areas between the cover plate and the beam main body, while the front longitudinal beam structure of the present application has only one connection area. Therefore, the overall structural continuity of this front longitudinal beam structure is higher, and the energy absorption efficiency of its cross-section is also higher.

[0044] In the first aspect, please refer to Figure 1 and Figure 2 , the embodiment of the present application provides a front longitudinal beam structure 10, including a beam body 11.

[0045] The beam body 11 has a first edge side part 11a and a second edge side part 11b arranged opposite to the first edge side part 11a. The second edge side part 11b is connected to the inner wall of the beam body 11 and / or the first edge side part 11a. The beam body 11 forms a hollow tubular structure after being bent and enclosed, that is, the final form of the beam body 11 is a hollow tube.

[0046] Understandably, the beam body 11 is the main part of the front longitudinal beam structure 10. Both its first edge side part 11a and second edge side part 11b are outer edge parts of the beam body 11, which can be at the end face of the outer edge of the beam body 11 or parts extending a certain distance from the end face of the outer edge of the beam body 11. Moreover, the first edge side part 11a and the second edge side part 11b are arranged oppositely. In this way, when the beam body 11 is bent, the first edge side part 11a and the second edge side part 11b can gradually approach and be directly connected. Therefore, after the second edge side part 11b is connected to the first edge side part 11a and / or the inner wall of the beam body 11, the outer shape structure of the beam body 11 presents a hollow tubular structure. And, at the outer peripheral part of the beam body 11, there is only one connection area, and the overall structural continuity is higher.

[0047] Here, the inner wall of the beam body 11 refers to the internal structural wall surface after the beam body 11 is bent and wound to form a hollow tubular structure.

[0048] When the beam body 11 is bent and wound to form a hollow tubular structure, the setting position of the second edge side part 11b can be selected accordingly. Specifically, the second edge side part 11b can be connected to the first edge side part 11a, that is, there is an overlapping part between the second edge side part 11b and the first edge side part 11a, and the two are connected through corresponding connection processes such as welding and riveting; or, the second edge side part 11b crosses the first edge side part 11a and is connected to the inner wall of the beam body 11. At this time, the first edge side part 11a is exposed to the outside. Similarly, there is also an overlapping part between the second edge side part 11b and the inner wall of the beam body 11, and the two can also be connected through corresponding connection processes such as welding and riveting; or, the second edge side part 11b can be connected to both the first edge side part 11a and the inner wall of the beam body 11. At this time, the bending and winding degree of the beam body 11 is relatively low. That is, a part of the second edge side part 11b is connected to the first edge side part 11a, and another part of the second edge side part 11b is connected to the inner wall of the beam body 11.

[0049] Moreover, the connection methods between the second edge side part 11b and the first edge side part 11a and / or the inner wall of the beam body 11 include but are not limited to welding, riveting, screw connection, etc. Among them, welding connection can seal the structural gap between the two, and can further improve the continuity of the beam body 11.

[0050] The beam body 11 can be formed into a hollow tubular structure by means of rolling, stamping, etc. Compared with the forming method of covering two structural parts in the related technology, the forming methods of rolling or stamping and bending are simpler, more efficient, have relatively fewer process steps, and the production cost is also lower.

[0051] The front longitudinal beam structure 10 provided by the present utility model is formed by bending and curling a whole plate structure to form a beam body 11, so that the relatively arranged second edge side portions 11b approach the first edge side portion 11a, the second edge side portion 11b is connected to the first edge side portion 11a, or the second edge side portion 11b is connected to the inner wall of the beam body 11, or the second edge side portion 11b is connected to both the inner wall of the beam body 11 and the first edge side portion 11a. Finally, the beam body 11 is formed into a hollow tubular structure after bending and winding. Thus, the front longitudinal beam structure 10 provided by the embodiment of the present application is a hollow tube structure with only one connection point and a continuous structure, which has higher structural strength and higher energy absorption efficiency when subjected to external collision impacts.

[0052] Please refer to Figure 2 , in one embodiment, the second edge side portion 11b is continuously connected to the inner wall of the beam body 11 and / or the first edge side portion 11a.

[0053] It can be understood that the continuous connection means that there is a structural gap or almost no structural gap at the connection between the second edge side portion 11b and the inner wall of the beam body 11 and / or the first edge side portion 11a. For example, the overlapping part of the second edge side portion 11b and the inner wall of the beam body 11 and / or the first edge side portion 11a is connected by welding, so that there is no structural gap between them, or the overlapping part of the second edge side portion 11b and the inner wall of the beam body 11 and / or the first edge side portion 11a is connected by rivets, and at the same time, the positions between adjacent two rivets are further connected by welding, which can also achieve the formation of no structural gap.

[0054] Exemplarily, the second edge side portion 11b can be continuously connected to the first edge side portion 11a, that is, there is no structural gap or almost no structural gap at the overlapping part of the two.

[0055] Exemplarily, the second edge side portion 11b can be continuously connected to the inner wall of the beam body 11, that is, there is no structural gap or almost no structural gap at the overlapping part of the two.

[0056] Exemplarily, the second edge side portion 11b can be continuously connected to both the first edge side portion 11a and the inner wall of the beam body 11, that is, there is no structural gap or almost no structural gap at the overlapping parts between the second edge side portion 11b and the first edge side portion 11a, and between the second edge side portion 11b and the inner wall of the beam body 11.

[0057] It should be noted that after the continuous connection is completed, the forces on all parts of the inner wall of the hollow tubular structure are consistent, and the integrity and continuity of its structure are greatly improved. When subjected to an external collision, the forces on all parts of the inner wall of the hollow tubular structure are uniform, which can greatly reduce the problem of collision failure caused by stress concentration.

[0058] In this way, the continuous connection makes there be no gap between the second edge side portion 11b and the inner wall of the first edge side portion 11a and / or the beam body 11, or the size of the gap can be ignored. Therefore, structurally, the hollow tubular structure is continuous and is not easily defeated when subjected to an external collision impact, having a good energy absorption effect and a high energy absorption efficiency.

[0059] In one embodiment, the second edge side portion 11b is continuously connected to the inner wall of the beam body 11 and / or the first edge side portion 11a by welding.

[0060] It can be understood that welding can achieve the fusion of the materials between the second edge side portion 11b and the inner wall of the beam body 11 and / or the first edge side portion 11a, and can improve the structural connectivity and stability at the connection between the two. Here, a continuous welding method can be adopted to reduce the probability of forming a structural gap between the second edge side portion 11b and the inner wall of the beam body 11 and / or the first edge side portion 11a.

[0061] In this way, the complexity of the welding process is low, and the production efficiency is higher, which can meet the required continuous connectivity requirements between the second edge side portion 11b and the first edge side portion 11a and / or the inner wall of the beam body 11.

[0062] Please refer to Figure 1 and Figure 2 , in one embodiment, the hollow tubular structure at least has a first pipe section 10a, a second pipe section 10b, a third pipe section 10c, and a fourth pipe section 10d that are connected in sequence from beginning to end.

[0063] It can be understood that each pipe section is an individual component of the hollow tubular structure. In the cross-sectional direction, or in the circumferential direction of the hollow pipe body structure, the first pipe section 10a, the second pipe section 10b, the third pipe section 10c, and the fourth pipe section 10d together enclose to form the hollow tubular structure. Therefore, the cross-section of the hollow tubular structure is formed into a quadrilateral structure. Here, the quadrilateral structure can be a square, a rectangle, a trapezoid, etc. Of course, the quadrilateral structure can be an irregular quadrilateral.

[0064] In this way, the cross-section of the hollow tubular structure is at least a quadrilateral structure, and in addition to meeting the connection requirements with other components, its structural strength is also relatively high.

[0065] Please refer to Figure 2, in one embodiment, the first pipe section 10a, the second pipe section 10b, the third pipe section 10c, and the fourth pipe section 10d enclose to form a hollow tubular structure with a square cross-section.

[0066] It can be understood that the square can be a rectangle. In this case, the length of the first pipe section 10a is equal to or approximately equal to the length of the third pipe section 10c, and the length of the second pipe section 10b is equal to or approximately equal to the length of the fourth pipe section 10d.

[0067] Alternatively, when the square can also be a square, the lengths of the first pipe section 10a, the second pipe section 10b, the third pipe section 10c, and the fourth pipe section 10d are all equal or approximately equal.

[0068] In this way, the hollow tubular structure with a square cross-section has higher structural strength, especially in its height direction and is not easily crushed and deformed.

[0069] Please refer to Figure 2 , in one embodiment, the third pipe section 10c includes an intermediate section 10c1 and extension sections 10c2 respectively connected to opposite ends of the intermediate section 10c1. One end of each extension section away from the intermediate section 10c1 is inclined with respect to the intermediate section 10c1 and is respectively connected to the second pipe section 10b and the fourth pipe section 10d.

[0070] It can be understood that the third pipe section 10c is the part opposite to the first pipe section 10a. In the setting direction, the first pipe section 10a is located above the third pipe section 10c. When a collision force in the up and down direction is applied, the collision force is transmitted to the second pipe section 10b and the fourth pipe section 10d, and the pipe sections at these two places absorb energy.

[0071] In addition, the third pipe section 10c is divided into three parts, namely, the intermediate section 10c1 and two extension sections 10c2. The extension sections 10c2 are used to connect to the two pipe sections connected to the third pipe section 10c. Here, one end of the extension section away from the intermediate section 10c1 is inclined with respect to the intermediate section 10c1, so that an angled structure is formed at the connection of the extension section 10c2 and the corresponding pipe section. This angled structure can increase the sectional force on the lower surface of the front longitudinal beam structure 10. Specifically, when the hollow pipe structure is subjected to a collision force in the up and down direction, the collision force is divided in the left and right directions after being transmitted through the extension part, thereby reducing the magnitude of the component force in the up and down direction. Finally, the tendency of the front longitudinal beam to bend downward during the collision is inhibited.

[0072] In this way, the connections between the third pipe section 10c and the second pipe section 10b, and between the third pipe section 10c and the fourth pipe section 10d are designed as angled corners, so as to increase the sectional force on the lower surface of the front longitudinal beam structure 10 and inhibit the tendency of the front longitudinal beam to bend downward during the collision.

[0073] Please refer to Figure 1 and Figure 2 In one embodiment, the second edge portion 11 b is connected to the inner wall of the beam body 11 , and the first edge portion 11 a extends outward away from the second edge portion 11 b .

[0074] It can be understood that the second edge portion 11 b is connected to the inner wall of the beam body 11 , while the first edge portion 11 a is folded outward for connection with an external structure or equipment.

[0075] The second edge portion 11 b is connected to the first edge portion 11 a , and the second edge portion 11 b and the first edge portion 11 a extend outward together.

[0076] Similarly, the second edge side portion 11 b is connected to the first edge side portion 11 a , and the second edge side portion 11 b and the first edge side portion 11 a can be extended outward together for connection with an external structure or equipment.

[0077] For example, the second edge portion 11b is connected to the inner wall of the beam body 11, and the first edge portion 11a is folded outward and extended. At this time, the first edge portion 11a is used to connect to a shock tower, a beam structure, etc.

[0078] In this way, the outer surface of the front longitudinal beam connection structure with a hollow tubular structure will form a structural portion protruding outwards, which can be used to provide corresponding connection points for connecting with other beams or components of the vehicle body.

[0079] Please refer to Figure 1 In one embodiment, the front longitudinal beam structure 10 further includes a plurality of crush ribs 12 , each crush rib 12 being respectively disposed on the second tube segment 10 b and / or the fourth tube segment 10 d .

[0080] It can be understood that the crush rib 12 is an energy-absorbing structure for absorbing collision kinetic energy, wherein the crush rib 12 can be a hollow rib structure protruding from the outer surface of the front longitudinal beam structure 10, or the crush rib 12 can also be a hollow rib structure recessed into the outer surface of the front longitudinal beam structure 10.

[0081] For example, there are a plurality of crush ribs 12 , and each crush rib 12 is disposed on the second tube segment 10 b and / or the fourth tube segment 10 d at intervals along the length direction of the front longitudinal beam structure 10 .

[0082] In this way, the crush ribs 12 are utilized to further absorb the kinetic energy during the collision, thereby improving the energy absorption efficiency of the front longitudinal beam structure 10 .

[0083] Below, the front longitudinal beam structure 10 provided in an embodiment of the present application will be described in detail according to specific implementation methods.

[0084] Please refer to Figure 1 and Figure 2 , an embodiment of the present application provides a front longitudinal beam structure 10 , including a beam body 11 .

[0085] The beam body 11 has a first edge portion 11 a and a second edge portion 11 b opposite to the first edge portion 11 a . The second edge portion 11 b is connected to the inner wall of the beam body 11 so that the beam body 11 is bent and enclosed to form a hollow tubular structure.

[0086] The front longitudinal beam structure 10 can be formed into a hollow tubular structure by structural bending through rolling, stamping, etc. Compared with the forming method of covering two structural parts in the related art, the forming method of rolling or stamping bending is simpler, more efficient, and has relatively fewer process steps, and the production cost is also lower.

[0087] The second side edge 11b is continuously connected to the inner wall of the beam body 11 by welding. Welding allows the material between the second side edge 11b and the inner wall of the beam body 11 to fuse, improving the structural connectivity and stability of the connection. Continuous welding can be used to reduce the likelihood of structural gaps forming between the second side edge 11b and the inner wall of the beam body 11 and / or the first side edge 11a.

[0088] The first tube segment 10a, the second tube segment 10b, the third tube segment 10c, and the fourth tube segment 10d together form a hollow tubular structure with a square cross-section. The third tube segment 10c includes a central segment 10c1 and extension segments 10c2 connected to opposite ends of the central segment 10c1. Each extension segment is disposed at an angle with respect to the central segment 10c1 at one end away from the central segment 10c1 and is connected to the second tube segment 10b and the fourth tube segment 10d, respectively. Here, the third pipe segment 10c is divided into three parts, namely, a middle segment 10c1 and two extension segments 10c2. The extension segment 10c2 is used to connect the two pipe segments connected to the third pipe segment 10c. Here, the end of the extension segment away from the middle segment 10c1 is inclined to the middle segment 10c1, so that the connection between the extension segment 10c2 and the corresponding pipe segment forms an oblique structure. The oblique structure can increase the cross-sectional force of the lower surface of the front longitudinal beam structure 10. Specifically, when the hollow tube structure is subjected to a collision force in the up and down directions, the collision force will be transmitted through the extension part and will be divided in the left and right directions, thereby reducing the magnitude of the component force in the up and down directions, and ultimately, suppressing the tendency of the front longitudinal beam to bend downward during the collision.

[0089] The second edge portion 11b is connected to the inner wall of the beam body 11, and the first edge portion 11a extends outward away from the second edge portion 11b. The first edge portion 11a is used to connect to a shock tower, a beam structure, etc.

[0090] The front longitudinal beam structure 10 further includes a plurality of crash ribs 12, and each crash rib 12 is respectively disposed on the second pipe section 10b and / or the fourth pipe section 10d. The crash rib 12 is an energy-absorbing structure for absorbing collision kinetic energy. Among them, the crash rib 12 can be a hollow rib structure protruding from the outer surface of the front longitudinal beam structure 10, or the crash rib 12 can also be a hollow rib structure concave in the outer surface of the front longitudinal beam structure 10. The crash rib 12 is used to further absorb the kinetic energy during a collision to improve the energy absorption efficiency of the front longitudinal beam structure 10.

[0091] In a second aspect, please refer to Figure 3 , an embodiment of the present application provides a front longitudinal beam assembly 100, including the above-mentioned front longitudinal beam structure 10.

[0092] Based on the above-mentioned front longitudinal beam structure 10, the front longitudinal beam assembly provided by the present utility model has higher structural strength and energy absorption efficiency.

[0093] Here, the front longitudinal beam assembly 100 may further include a reinforcing plate, an inner plate and an outer plate, and each reinforcing plate, inner plate and outer plate are disposed on the front longitudinal beam structure 10 to improve the overall structural strength.

[0094] In a third aspect, please refer to Figure 4 , an embodiment of the present application provides a vehicle 1000, including the above-mentioned front longitudinal beam assembly 100.

[0095] Based on the above-mentioned front longitudinal beam assembly 100, the vehicle 1000 provided by the present utility model can have better frontal collision performance.

[0096] The technical solutions described in the embodiments of the present application are applicable to vehicles including fuel vehicles, gas vehicles or new energy vehicles. Among them, the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0097] Of course, the vehicle 1000 provided by the present application further includes a wheel 200, a battery device 300, a motor 400, etc., which are connected to the front longitudinal beam assembly 100. The battery device 300 is used to supply power to the motor 400, and the motor 400 is used to drive the wheel 200 to rotate.

[0098] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A front longitudinal beam structure, characterized in that, Comprising: A beam body having a first edge side portion and a second edge side portion disposed opposite to the first edge side portion, the second edge side portion being connected to the inner wall of the beam body and / or the first edge side portion, and the beam body being a hollow tubular structure.

2. The front longitudinal beam structure according to claim 1, characterized in that: The second edge side portion is continuously connected to the inner wall of the beam body and / or the first edge side portion.

3. The front longitudinal beam structure according to claim 2, wherein: The second edge side portion is continuously connected to the inner wall of the beam body and / or the first edge side portion by welding.

4. The front longitudinal beam structure according to any one of claims 1 to 3, characterized in that: The hollow tubular structure at least has a first pipe section, a second pipe section, a third pipe section, and a fourth pipe section that are connected in sequence from start to end.

5. The front longitudinal beam structure according to claim 4, characterized in that: The first pipe section, the second pipe section, the third pipe section, and the fourth pipe section enclose the hollow tubular structure having a square cross section.

6. The front longitudinal beam structure according to claim 5, characterized in that: The third pipe section includes an intermediate section and extension sections respectively connected to opposite ends of the intermediate section, and one end of each extension section away from the intermediate section is inclined with respect to the intermediate section and is respectively connected to the second pipe section and the fourth pipe section.

7. The front longitudinal beam structure according to claim 4, characterized in that: The front longitudinal beam structure further includes a plurality of crush ribs, and each crush rib is respectively disposed on the second pipe section and / or the fourth pipe section.

8. The front longitudinal beam structure according to claim 1, characterized in that: The second edge side portion is connected to the inner wall of the beam body, and the first edge side portion extends outwardly away from the second edge side portion; or The second edge side portion is connected to the first edge side portion, and the second edge side portion and the first edge side portion extend outwardly together.

9. A front longitudinal beam assembly, characterized in that: Comprising the front longitudinal beam structure according to any one of claims 1 to 8.

10. A vehicle, characterized in that: Comprising the front longitudinal beam assembly according to any one of claim 9.

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