Vehicle longitudinal beam

Abstract

The utility model discloses a vehicle longitudinal beam. The vehicle longitudinal beam comprises a longitudinal beam body, a first reinforcing plate and a second reinforcing plate, the longitudinal beam body extends in the length direction of a vehicle, and a longitudinal beam cavity extending in the length direction of the vehicle is formed in the longitudinal beam body; the first reinforcing plate is located in the longitudinal beam cavity and connected with the two opposite inner side walls of the longitudinal beam body in the width direction of the vehicle. The second reinforcing plate is located in the longitudinal beam cavity and extends in the length direction, the second reinforcing plate is connected with the inner side wall of the longitudinal beam body, and the second reinforcing plate and the first reinforcing plate are arranged in the length direction of the vehicle in a spaced mode so that a deformation induction area can be formed between the first reinforcing plate and the second reinforcing plate. The first reinforcing plate and the second reinforcing plate reinforce the local strength of the longitudinal beam body at the corresponding positions, so that the local strength of the deformation induction area is weaker than the local strength of the longitudinal beam body at the first reinforcing plate and the second reinforcing plate, and the longitudinal beam body deforms towards the deformation induction area when collision occurs.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle longitudinal beam. Background Art

[0002] With the rapid development of the automotive market and the updating of collision safety regulations, improving vehicle collision safety performance has become a key concern. A vehicle's frame structure is a key factor influencing vehicle safety performance, particularly the strength and structure of the front longitudinal beam. The front longitudinal beam assembly is a crucial force-transmitting and energy-absorbing component during a vehicle collision. In frontal collisions, if the longitudinal beam deforms improperly, resulting in excessive cabin intrusion, serious injury or death may result.

[0003] When a collision occurs, the front longitudinal beam will bend and deform due to the impact force of the collision, and the impact force will be transmitted to the rear of the vehicle body. There is a high risk of the front longitudinal beam invading the cab. Therefore, the vehicle's front longitudinal beam structure needs to be improved to reduce the amount of intrusion of the front longitudinal beam into the cab during a collision to protect the personal safety of the driver and passengers. Utility Model Content

[0004] The main purpose of this application is to provide a vehicle longitudinal beam, aiming to solve the above-mentioned technical problems existing in the prior art.

[0005] To solve the above problems, the present application provides a vehicle longitudinal beam, which includes a longitudinal beam body, a first reinforcing plate and a second reinforcing plate. The longitudinal beam body is extended along the length direction of the vehicle, and the longitudinal beam body is formed with a longitudinal beam cavity extending along the length direction of the vehicle; the first reinforcing plate is located in the longitudinal beam cavity, and the first reinforcing plate connects the two opposite inner walls of the longitudinal beam body in the width direction of the vehicle; the second reinforcing plate is located in the longitudinal beam cavity, and the second reinforcing plate extends along the length direction, and the second reinforcing plate is connected to the inner side wall of the longitudinal beam body. The second reinforcing plate and the first reinforcing plate are spaced apart in the length direction of the vehicle to form a deformation inducing zone between the first reinforcing plate and the second reinforcing plate, wherein the vehicle width direction and the vehicle length direction are perpendicular.

[0006] Furthermore, an induction groove is provided on the outer side surface of the longitudinal beam body, the induction groove is located in the deformation induction zone in the length direction of the vehicle, and the induction groove is located on one side of the longitudinal beam body in the width direction of the vehicle.

[0007] Furthermore, the longitudinal beam body includes a connected longitudinal beam outer plate and a longitudinal beam inner plate, the longitudinal beam outer plate and the longitudinal beam inner plate are at least partially separated to form the longitudinal beam cavity, the induction groove is arranged on the longitudinal beam outer plate and the longitudinal beam inner plate, the first reinforcement plate is connected to the longitudinal beam inner plate and the longitudinal beam outer plate at the same time, and the second reinforcement plate is connected to at least the longitudinal beam inner plate.

[0008] Furthermore, the longitudinal beam outer panel is provided with a first outer panel protrusion and a second outer panel protrusion, the first outer panel protrusion and the second outer panel protrusion are located on both sides of the induction groove, and the deformation induction area between the first outer panel protrusion and the second outer panel protrusion is also provided with a plurality of weakening holes.

[0009] Furthermore, the first reinforcing plate includes a first main body portion and a first connecting portion, the first connecting portion is bent and connected to a peripheral side of the first main body portion, and the first connecting portion is connected to the longitudinal beam inner plate and the longitudinal beam outer plate.

[0010] Furthermore, the first connecting portion includes two end flanges, which are bent and connected to opposite sides of the first main body portion, and the two end flanges are connected to the inner wall of the longitudinal beam inner plate. The two end flanges are bent in opposite directions, and a first reinforcing protrusion is provided on the first main body portion, which extends toward the two end flanges.

[0011] Furthermore, the first connecting portion also includes two side flanges, which are bent and connected to opposite sides of the first main body portion, and the two side flanges are bent in opposite directions. One of the side flanges is connected to the inner wall of the longitudinal beam inner plate, and the other side flange is connected to the inner wall of the longitudinal beam outer plate.

[0012] Furthermore, the longitudinal beam inner plate is provided with a first inner plate protrusion and a second inner plate protrusion, and the first inner plate protrusion and the second inner plate protrusion are respectively located on both sides of the induction groove.

[0013] Furthermore, the first inner plate protrusion is at least partially connected to the first reinforcing plate, and the second inner plate protrusion is at least partially connected to the second reinforcing plate.

[0014] Compared with the prior art, the vehicle longitudinal beam of the present application includes a longitudinal beam body, a first reinforcing plate and a second reinforcing plate. The longitudinal beam body is extended along the length direction of the vehicle, and the longitudinal beam body is formed with a longitudinal beam cavity extending along the length direction of the vehicle; the first reinforcing plate is located in the longitudinal beam cavity, and the first reinforcing plate connects the two opposite inner walls of the longitudinal beam body in the width direction of the vehicle; the second reinforcing plate is located in the longitudinal beam cavity, and the second reinforcing plate extends along the length direction, and the second reinforcing plate is connected to the inner side wall of the longitudinal beam body. The second reinforcing plate and the first reinforcing plate are spaced apart in the length direction of the vehicle to form a deformation inducing zone between the first reinforcing plate and the second reinforcing plate, wherein the vehicle width direction and the vehicle length direction are perpendicular. Through the above-mentioned embodiment, the longitudinal beam cavity inside the longitudinal beam body can absorb energy during a collision, and the first reinforcing plate and the second reinforcing plate strengthen the local strength of the longitudinal beam body at the corresponding position, so that the local strength of the longitudinal beam body between the first reinforcing plate and the second reinforcing plate is weaker than the local strength of the longitudinal beam bodies on both sides, that is, the local strength of the deformation inducing area is weaker than the local strength of the longitudinal beam body at the first reinforcing plate and the second reinforcing plate, so that when a collision occurs, the longitudinal beam body deforms toward the deformation inducing area, thereby reducing the deformation transfer of the longitudinal beam body to the longitudinal beam body at the first reinforcing plate, thereby improving the collision safety performance of the vehicle longitudinal beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a schematic diagram of the vehicle longitudinal beam structure provided by this application;

[0017] Figure 2 This is a schematic structural diagram of the vehicle longitudinal beam provided by the present application without the longitudinal beam outer plate;

[0018] Figure 3 It is a schematic diagram of the structure of the longitudinal beam outer plate provided in this application;

[0019] Figure 4 This is a schematic diagram of the structure of the first reinforcement plate provided in this application;

[0020] Figure 5 It is a structural diagram of the longitudinal beam inner plate provided by this application;

[0021] Figure 6 This is a schematic diagram of the second reinforcement plate structure provided in this application.

[0022] Figure numbers: vehicle longitudinal beam 1; longitudinal beam body 10; longitudinal beam inner plate 110; first inner plate protrusion 111; second inner plate protrusion 112; inner plate body 113; inner plate flange 114; longitudinal beam outer plate 120; first outer plate protrusion 121; second outer plate protrusion 122; outer plate body 123; outer plate flange 124; first reinforcing plate 20; first body 210; first reinforcing protrusion 211; first connecting portion 220; end flange 221; side flange 222; second reinforcing plate 30; second body 310; second reinforcing protrusion 311; second connecting portion 320; longitudinal beam cavity 40; induction groove 50; weakening hole 60. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0025] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0026] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0028] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0029] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0030] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0031] When a collision occurs, the front longitudinal beam will bend and deform due to the impact force of the collision, and the impact force will be transmitted to the rear of the vehicle body. There is a high risk of the front longitudinal beam invading the cab. Therefore, the vehicle's front longitudinal beam structure needs to be improved to reduce the amount of intrusion of the front longitudinal beam into the cab during a collision to protect the personal safety of the driver and passengers.

[0032] In order to solve the related technical problems, the present application provides a vehicle longitudinal beam, see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the vehicle longitudinal beam structure provided by this application. Figure 2 This is a structural schematic diagram of the vehicle longitudinal beam provided by this application without the longitudinal beam outer plate.

[0033] The vehicle longitudinal beam 1 includes a longitudinal beam body 10, a first reinforcing plate 20 and a second reinforcing plate 30. The longitudinal beam body 10 is extended along the length direction of the vehicle, and the longitudinal beam body 10 is formed with a longitudinal beam cavity 40 extending along the length direction of the vehicle; the first reinforcing plate 20 is located in the longitudinal beam cavity 40, and the first reinforcing plate 20 connects the two opposite inner walls of the longitudinal beam body 10 in the vehicle width direction; the second reinforcing plate 30 is located in the longitudinal beam cavity 40, and the second reinforcing plate 30 extends along the length direction, and the second reinforcing plate 30 is connected to the inner side wall of the longitudinal beam body 10, and the second reinforcing plate 30 and the first reinforcing plate 20 are spaced apart in the length direction of the vehicle to form a deformation inducing zone between the first reinforcing plate 20 and the second reinforcing plate 30, wherein the vehicle width direction and the vehicle length direction are perpendicular.

[0034] The longitudinal beam cavity 40 inside the longitudinal beam body 10 can absorb energy during a collision. The first reinforcing plate 20 and the second reinforcing plate 30 strengthen the local strength of the longitudinal beam body 10 at the corresponding position, so that the local strength of the longitudinal beam body 10 between the first reinforcing plate 20 and the second reinforcing plate 30 is weaker than the local strength on both sides, that is, the local strength of the deformation inducing area is weaker than the local strength of the longitudinal beam body 10 at the first reinforcing plate 20 and the second reinforcing plate 30, so that when a collision occurs, the longitudinal beam body 10 deforms toward the deformation inducing area, thereby reducing the deformation transfer of the longitudinal beam body 10 to the longitudinal beam body 10 at the first reinforcing plate 20, that is, reducing the risk of the vehicle longitudinal beam 1 invading the cab, thereby improving the collision safety performance of the vehicle longitudinal beam 1. It should be noted that the first reinforcing plate 20 is arranged at the rear section of the longitudinal beam body 10 close to the cab, and the second reinforcing plate 30 is arranged at the front section of the longitudinal beam body 10 close to the head of the vehicle. In order to ensure that the front section of the longitudinal beam body 10 fully absorbs energy, the second reinforcing plate 30 can be connected to part of the inner wall of the longitudinal beam body 10. In order to avoid the deformation from being transmitted to the rear section of the longitudinal beam body 10, the first reinforcing plate 20 can span the longitudinal beam cavity 40 and the two opposite inner side walls of the longitudinal beam body 10, thereby effectively enhancing the strength of the rear section of the longitudinal beam body 10. In order to enable the front part of the longitudinal beam body 10 to fully absorb energy, the deformation inducing zone can be arranged at a position close to the rear section of the longitudinal beam body 10, but not too close to the cab, so as to avoid the deformation inducing zone failing to effectively prevent the deformation of the longitudinal beam body 10 from being transmitted and invading the cab. It is understood that the deformation-inducing zone can cause the longitudinal beam body 10 to indent into the longitudinal beam cavity 40 in multiple directions along the vehicle width direction to absorb energy, reducing the transmission of deformation of the longitudinal beam body 10 along the vehicle length direction to the rear section of the longitudinal beam body 10 at the first reinforcement plate 20, thereby reducing the risk of the vehicle longitudinal beam 1 intruding into the cab. Preferably, the longitudinal beam body 10, the first reinforcement plate 20, and the second reinforcement plate 30 are made of high-strength steel, and weight-reducing holes are also provided in the longitudinal beam body 10, the first reinforcement plate 20, and the second reinforcement plate 30, thereby effectively reducing the weight of the vehicle longitudinal beam 1.

[0035] The outer surface of the longitudinal beam body 10 is provided with an induction groove 50. The induction groove 50 is located in the deformation induction zone in the vehicle length direction and on one side of the longitudinal beam body 10 in the vehicle width direction. To further guide the longitudinal beam body 10 toward the deformation induction zone to absorb energy, the induction groove 50 is provided on the outer surface of the longitudinal beam body 10. The induction groove 50 can be in the form of a V-shaped groove, an arcuate groove, a circular groove, etc., which are not limited here. The induction groove 50 is recessed from the edge of the longitudinal beam body 10 inward toward the longitudinal beam cavity 40, thereby causing the longitudinal beam body 10 to recess into the longitudinal beam cavity 40 in a direction perpendicular to the vehicle length, effectively preventing the longitudinal beam body 10 from deforming in the vehicle length direction and reducing deformation of the longitudinal beam rear section at the first reinforcement plate 20.

[0036] The longitudinal beam body 10 includes a connected longitudinal beam outer plate 120 and a longitudinal beam inner plate 110, the longitudinal beam outer plate 120 and the longitudinal beam inner plate 110 are at least partially separated to form a longitudinal beam cavity 40, the induction groove 50 is set on the longitudinal beam outer plate 120 and the longitudinal beam inner plate 110, the first reinforcement plate 20 is connected to the longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 at the same time, and the second reinforcement plate 30 is connected to at least the longitudinal beam inner plate 110.

[0037] The longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 together form the longitudinal beam cavity 40, which helps to absorb collision energy. The longitudinal beam outer plate 120 and the longitudinal beam inner plate 110 can be set to an "X" shape to increase the rigidity of the longitudinal beam body 10 and facilitate the formation of the longitudinal beam cavity 40. The longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 both have a structure extending and bending in different directions, thereby improving torsional rigidity. For ease of description, the longitudinal beam inner plate 110 is divided into an inner plate body portion 113 and an inner plate flange 114, and the longitudinal beam outer plate 120 is divided into an outer plate body portion 123 and an outer plate flange 124. The inner plate flange 114 is bent and connected to the inner plate body portion 113, and the outer plate flange 124 is bent and connected to the outer plate body portion 123. The inner plate flange 114 and the outer plate flange 124 are connected. The inner plate body portion 113 and the outer plate body portion 123 are raised in opposite directions to form a longitudinal beam cavity 40. The induction groove 50 is provided at the same position of the inner plate flange 114 and the outer plate flange 124, and is recessed from the flange to the body portion. Preferably, the longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 are made of high-strength steel, and the longitudinal beam outer plate 120, the longitudinal beam inner plate 110, the first reinforcement plate 20, and the second reinforcement plate 30 are spot welded.

[0038] See also Figure 3 , Figure 3 It is a structural schematic diagram of the longitudinal beam outer plate provided in this application.

[0039] The longitudinal beam outer panel 120 is provided with a first outer panel protrusion 121 and a second outer panel protrusion 122. The first outer panel protrusion 121 and the second outer panel protrusion 122 are located on both sides of the induction groove 50. The deformation induction area between the first outer panel protrusion 121 and the second outer panel protrusion 122 is also provided with a plurality of weakening holes 60.

[0040] The first outer panel protrusion 121 and the second outer panel protrusion 122 protrude from the surface of the longitudinal beam outer panel 120. They can protrude from the surface of the longitudinal beam outer panel 120 facing the longitudinal beam cavity 40 or from the surface of the longitudinal beam outer panel 120 facing away from the longitudinal beam cavity 40, so that the longitudinal beam outer panel 120 is partially bent and extended in different directions to improve torsional rigidity. The purpose of the first outer panel protrusion 121 and the second outer panel protrusion 122 is to further increase the local strength of the induction groove 50 or both sides of the deformation induction zone, so that the longitudinal beam body 10 can be concave toward the deformation induction zone to absorb energy during a collision. The shape of the first outer panel protrusion 121 and the second outer panel protrusion 122 can be elongated, circular, etc., and is not limited here. The weakening hole 60 can further reduce the strength of the deformation induction zone, making it easier for the longitudinal beam body 10 to be concave and deform toward the deformation induction zone. The shape of the weakening hole 60 is not limited, and the number of weakening holes 60 can be adjusted according to actual conditions.

[0041] See also Figure 4 , Figure 4 This is a schematic diagram of the first reinforcement plate structure provided in this application.

[0042] The first reinforcement plate 20 includes a first main portion 210 and a first connecting portion 220. The first connecting portion 220 is bent and connected to the side of the first main portion 210. The first connecting portion 220 is connected to the longitudinal beam inner panel 110 and the longitudinal beam outer panel 120. The first main portion 210 spans the longitudinal beam cavity 40 and effectively prevents deformation from being transmitted toward the rear section of the longitudinal beam body 10 in the vehicle length direction. Deformation of the longitudinal beam body 10 transmitted rearward is blocked and absorbed by the first main portion 210. The first connecting portion 220 is connected to the inner walls of the longitudinal beam inner panel 110 and the longitudinal beam outer panel 120, thereby increasing the connection strength between the longitudinal beam inner panel 110 and the longitudinal beam outer panel 120, helping to strengthen the strength of the rear section of the longitudinal beam body 10, making it less susceptible to deformation and effectively reducing the risk of the vehicle longitudinal beam 1 intruding into the cab.

[0043] The first connecting portion 220 includes two end flanges 221, which are bent and connected to opposite sides of the first main body 210 and connected to the inner sidewall of the longitudinal beam inner panel 110. The two end flanges 221 bend in opposite directions. The first main body 210 is provided with a first reinforcing protrusion 211, which extends toward the two end flanges 221. The two end flanges 221 are located on opposite sides of the first main body 210 and connected to the sidewall of the inner plate main body 113 of the longitudinal beam inner panel 110, thereby reinforcing the local rigidity of the longitudinal beam inner panel 110. At the same time, the end flanges 221 cause the first reinforcing plate 20 to bend and extend in different directions, thereby helping to improve the torsional rigidity of the first reinforcing plate 20 and the longitudinal beam inner panel 110. The first reinforcing protrusion 211 protrudes from the surface of the first main body 210 and extends and connects with the two end flanges 221 , which further improves the torsional rigidity of the first reinforcing plate 20 and helps absorb and block the deformation transmitted from the front of the longitudinal beam body 10 .

[0044] The first connection portion 220 also includes two side flanges 222, which are bent and connected to opposite sides of the first main body portion 210 respectively. The two side flanges 222 are bent in opposite directions, one of the side flanges 222 is connected to the inner wall of the longitudinal beam inner plate 110, and the other side flange 222 is connected to the inner wall of the longitudinal beam outer plate 120. The two side flanges 222 are located on the side edges of the first main body portion 210 adjacent to the two end flanges 221. The two side flanges 222 are respectively connected to the inner bottom wall surface of the outer plate main body portion 123 of the longitudinal beam outer plate 120 and the inner bottom wall surface of the inner plate main body portion 113 of the longitudinal beam inner plate 110. While strengthening the local strength of the longitudinal beam inner plate 110 and the longitudinal beam outer plate 120, the connection strength of the longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 is also enhanced. The two side flanges 222 are bent in opposite directions to help improve the torsional stiffness of the first reinforcing plate 20.

[0045] See also Figure 5 , Figure 5 It is a structural schematic diagram of the longitudinal beam inner plate provided in this application.

[0046] The longitudinal beam inner panel 110 is provided with a first inner panel protrusion 111 and a second inner panel protrusion 112, which are respectively located on both sides of the induction groove 50. The first inner panel protrusion 111 and the second inner panel protrusion 112 further strengthen the local strength on both sides of the induction groove 50 to ensure that the longitudinal beam inner panel 110 deforms toward the induction groove 50 and the deformation induction zone. The first inner panel protrusion 111 and the second inner panel protrusion 112 can protrude toward the surface of the longitudinal beam inner panel 110 facing the longitudinal beam cavity 40, or can protrude toward the surface of the longitudinal beam inner panel 110 facing away from the longitudinal beam cavity 40. The first inner panel protrusion 111 and the second inner panel protrusion 112 allow the longitudinal beam inner panel 110 to bend and extend in different directions, which helps to improve torsional rigidity.

[0047] The first inner panel protrusion 111 is at least partially connected to the first reinforcing plate 20, the second inner panel protrusion 112 is at least partially connected to the second reinforcing plate 30, the first reinforcing plate 20 at least partially covers the first inner panel protrusion 111, and one of the side flanges 222 of the second reinforcing plate 30 at least partially covers the second inner panel protrusion 112. This allows the strength of the longitudinal beam body 10 on both sides of the induction groove 50 to be doubly reinforced, and the strength of the deformation inducing zone is weaker than that of the areas on both sides of the inducing groove 50, thereby guiding the longitudinal beam body 10 to deform concavely toward the deformation inducing zone.

[0048] See also Figure 6 , Figure 6 This is a schematic diagram of the second reinforcement plate structure provided in this application.

[0049] The second reinforcing plate 30 includes a second main body portion 310 and a second connecting portion 320 bent and connected to the second main body portion 310. A second reinforcing protrusion 311 is provided on the second main body portion 310. The second reinforcing plate 30 is U-shaped as a whole. The second reinforcing protrusion 311 is recessed toward a surface of the second main body portion 310. The second reinforcing protrusion 311 is cooperatively connected with the second inner plate protrusion 112. The second reinforcing portion is in a herringbone shape, which can enable the second main body portion 310 to bend and extend in different directions, thereby helping to improve the torsional stiffness of the second main body portion 310.

[0050] In summary, the vehicle longitudinal beam 1 provided by the present application is provided with a first reinforcing plate 20 and a second reinforcing plate 30 on the longitudinal beam body 10 to strengthen the local strength, so as to form a deformation inducing zone between the first reinforcing plate 20 and the second reinforcing plate 30. The strength of the deformation inducing zone is weaker than the strength of the longitudinal beam body 10 at the reinforcing plates on both sides, thereby guiding the longitudinal beam body 10 to deform in the deformation inducing zone. At the same time, the inducing groove 50 and the weakening hole 60 are provided in the deformation inducing zone to further guide the deformation in the deformation inducing zone. The longitudinal beam inner plate 110 and the longitudinal beam outer plate 120 are provided on both sides of the inducing groove 50. The first inner panel protrusion 111, the second inner panel protrusion 112, the first outer panel protrusion 121, the second outer panel protrusion 122, etc. can further strengthen the strength of the longitudinal beam body 10 on both sides of the induction groove 50, and further ensure that the longitudinal beam body 10 is deformed concavely toward the deformation induction area. The first reinforcing plate 20 spans the longitudinal beam cavity 40 and is connected to the longitudinal beam inner panel 110 and the longitudinal beam outer panel 120, which can effectively strengthen the strength of the rear section of the longitudinal beam body 10 and effectively prevent deformation from being transmitted to the rear section of the longitudinal beam body 10, effectively reducing the risk of the longitudinal beam body 10 invading the cab.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A vehicle longitudinal beam, characterized in that: The vehicle longitudinal beam comprises: A longitudinal beam body is provided extending along the length direction of the vehicle, wherein the longitudinal beam body is formed with a longitudinal beam cavity extending along the length direction of the vehicle; a first reinforcing plate located in the longitudinal beam cavity, the first reinforcing plate connecting two opposite inner side walls of the longitudinal beam body in the vehicle width direction; A second reinforcing plate is located in the longitudinal beam cavity, the second reinforcing plate extends along the length direction, the second reinforcing plate is connected to the inner side wall of the longitudinal beam body, the second reinforcing plate and the first reinforcing plate are spaced apart in the length direction of the vehicle to form a deformation inducing zone between the first reinforcing plate and the second reinforcing plate, wherein the vehicle width direction is perpendicular to the vehicle length direction.

2. The vehicle longitudinal beam according to claim 1, characterized in that An induction groove is provided on the outer surface of the longitudinal beam body. The induction groove is located in the deformation induction zone in the vehicle length direction and is located on one side of the longitudinal beam body in the vehicle width direction.

3. The vehicle longitudinal beam according to claim 2, characterized in that The longitudinal beam body includes a connected longitudinal beam outer plate and a longitudinal beam inner plate, the longitudinal beam outer plate and the longitudinal beam inner plate are at least partially separated to form the longitudinal beam cavity, the induction groove is arranged on the longitudinal beam outer plate and the longitudinal beam inner plate, the first reinforcement plate is connected to the longitudinal beam inner plate and the longitudinal beam outer plate at the same time, and the second reinforcement plate is connected to at least the longitudinal beam inner plate.

4. The vehicle longitudinal beam according to claim 3, characterized in that The longitudinal beam outer panel is provided with a first outer panel protrusion and a second outer panel protrusion, the first outer panel protrusion and the second outer panel protrusion are located on both sides of the induction groove, and the deformation induction area between the first outer panel protrusion and the second outer panel protrusion is also provided with multiple weakening holes.

5. The vehicle longitudinal beam according to claim 3, characterized in that The first reinforcing plate includes a first main body portion and a first connecting portion. The first connecting portion is bent and connected to a peripheral side of the first main body portion. The first connecting portion is connected to the longitudinal beam inner plate and the longitudinal beam outer plate.

6. The vehicle longitudinal beam according to claim 5, characterized in that The first connecting portion includes two end flanges, which are bent and connected to opposite sides of the first main body portion. The two end flanges are connected to the inner wall of the longitudinal beam inner plate. The two end flanges are bent in opposite directions. A first reinforcing protrusion is provided on the first main body portion, and the first reinforcing protrusion extends toward the two end flanges.

7. The vehicle longitudinal beam according to claim 5, characterized in that The first connecting portion also includes two side flanges, which are bent and connected to opposite sides of the first main body portion. The two side flanges are bent in opposite directions, one of the side flanges is connected to the inner wall of the longitudinal beam inner plate, and the other side flange is connected to the inner wall of the longitudinal beam outer plate.

8. The vehicle longitudinal beam according to claim 3, wherein: The longitudinal beam inner plate is provided with a first inner plate protrusion and a second inner plate protrusion, and the first inner plate protrusion and the second inner plate protrusion are respectively located on both sides of the induction groove.

9. The vehicle longitudinal beam according to claim 8, characterized in that The first inner panel protrusion is at least partially connected to the first reinforcing panel, and the second inner panel protrusion is at least partially connected to the second reinforcing panel.

10. The vehicle longitudinal beam according to claim 1, wherein The second reinforcing plate includes a second main body portion and a second connecting portion bent and connected to the second main body portion. The second main body portion is provided with a second reinforcing protrusion.

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