Longitudinal beam and vehicle

Abstract

The utility model discloses a longitudinal beam and a vehicle, and relates to the technical field of vehicle bodies. The longitudinal beam extends in the front-back direction, at least one section of the longitudinal beam is a bent section, and an outer bent point is arranged on the bent section. The longitudinal beam comprises an inner plate and an outer plate which are connected, the inner plate and the outer plate extend in the front-back direction, a longitudinal beam energy absorption cavity is defined by the inner plate and the outer plate, and an induction groove is formed in the inner plate and located at the outer bending point. The longitudinal beam further comprises an energy absorption assembly located on the bending section, the energy absorption assembly comprises at least two energy absorption pieces arranged in the front-back direction, and the energy absorption pieces are located on the front side and the rear side of the outer bending point, so that when the longitudinal beam is bent at the outer bending point, the energy absorption pieces are extruded to absorb energy. According to the embodiment of the utility model, the deformation of the longitudinal beam is controllable after the longitudinal beam is collided, and the energy-absorbing and buffering effects are good.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle bodies, in particular to a longitudinal beam and a vehicle. Background Art

[0002] The front longitudinal beam of the engine compartment is a key component of the vehicle body structure. Its primary function is to absorb and transmit the energy and impact force generated during a collision. However, in some existing models, the deformation of the front longitudinal beam exhibits uncertainty when the vehicle is involved in a collision. This undesirable deformation affects the energy absorption efficiency of the front longitudinal beam, preventing it from fully absorbing the energy.

[0003] Therefore, there is room for improvement in the front longitudinal member of the vehicle. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a longitudinal beam, which has controllable deformation after a collision and has good energy absorption and buffering effect.

[0005] Another aspect of the present invention provides a vehicle.

[0006] According to the longitudinal beam of the embodiment of the first aspect of the present invention, the longitudinal beam is extended along the front-to-back direction, at least one section of the longitudinal beam is a bending section, and an outer bending point is provided on the bending section; the longitudinal beam includes a connected inner plate and an outer plate, and the inner plate and the outer plate are both extended along the front-to-back direction, and the inner plate and the outer plate together form a longitudinal beam energy absorption cavity, and an induction groove is provided on the inner plate, and the induction groove is located at the outer bending point; the longitudinal beam also includes an energy absorption component located on the bending section, and the energy absorption component includes at least two energy absorption parts arranged along the front-to-back direction, and at least two of the energy absorption parts are located on the front and rear sides of the outer bending point, so that when the longitudinal beam bends at the outer bending point, at least two of the energy absorption parts squeeze and absorb energy.

[0007] According to the first embodiment of the present invention, the longitudinal beam is provided with a bending section to guide the longitudinal beam to deform at a predetermined location, thereby causing the longitudinal beam to deform and achieve the effect of absorbing and dispersing impact force. The longitudinal beam energy absorption cavity is formed by connecting the inner and outer panels together to form an additional energy absorption space, thereby enhancing the longitudinal beam's energy absorption function. The longitudinal beam is guided to deform along a specific path during a collision by providing a guide groove at the outer bending point on the inner panel, thereby ensuring that the collision force is effectively absorbed and confined to a predetermined area, achieving controllable longitudinal beam deformation and improving the safety of the longitudinal beam. Furthermore, an energy absorption assembly is provided, which includes at least two energy absorbing members arranged in a front-to-rear direction, and these energy absorbing members are arranged on both sides of the outer bending point. When the longitudinal beam bends at the outer bending point, the two energy absorbing members squeeze each other, absorbing a large amount of collision energy through plastic deformation, thereby further enhancing the collision protection performance of the longitudinal beam.

[0008] According to some embodiments of the longitudinal beam of the present invention, the energy absorbing member includes: a first energy absorbing member, the first energy absorbing member is located in the longitudinal beam energy absorbing cavity, and there are at least two first energy absorbing members arranged on the front and rear sides of the outer bending point.

[0009] In some optional embodiments, the longitudinal beam further includes: a reinforcing plate, the reinforcing plate is arranged in the longitudinal beam energy absorption cavity, the reinforcing plate extends along the front-to-back direction, and the first energy absorbing member is installed on the reinforcing plate.

[0010] In some optional embodiments, the reinforcing plate includes: a first section arranged in sequence along the front-to-back direction, the first section connecting the inner panel; a second section, the second section being located at the outer bending point; a third section, the third section connecting the inner panel; wherein the second section protrudes toward the outer panel relative to the first section and the third section, and the second section is spaced apart from the outer panel; the reinforcing plate also includes: a first inclined section connected between the first section and the second section; a second inclined section connected between the third section and the second section; the first inclined section, the second section and the second inclined section are V-shaped, and the first inclined section and the second inclined section are respectively installed with the first energy absorbing member on the side facing the inner panel; the reinforcing plate also includes: two flanges connected to opposite sides of the second section; the first section and the third section are located on two sides of the second section, and the two flanges are connected to the other two sides of the second section; each flange is clamped between the inner panel and the outer panel and welded together.

[0011] According to some embodiments of the longitudinal beam of the present invention, the energy absorbing member includes: a second energy absorbing member, the second energy absorbing member is located outside the longitudinal beam energy absorbing cavity, the second energy absorbing member is installed on the side of the inner panel away from the outer panel, and the second energy absorbing member is provided on the front and rear sides of the outer bending point. At least two of the second energy absorbing members are provided.

[0012] According to some embodiments of the longitudinal beam of the present invention, at least one section of the longitudinal beam is a crushed section, and the crushed section is located at the front end of the bent section; vertical ribs are formed on at least one of the inner plate and the outer plate in the crushed section, and the vertical ribs are multiple and arranged in sequence along the front-to-back direction; when the vertical ribs are provided on the inner plate, the vertical ribs are protruded from a part of the inner plate toward the longitudinal beam energy absorption cavity or away from the longitudinal beam energy absorption cavity, and the two adjacent vertical ribs arranged along the front-to-back direction have opposite convex and concave directions; when the vertical ribs are provided on the outer plate, the vertical ribs are protruded from a part of the outer plate toward the longitudinal beam energy absorption cavity or away from the longitudinal beam energy absorption cavity, and the two adjacent vertical ribs arranged along the front-to-back direction have opposite convex and concave directions.

[0013] According to some embodiments of the longitudinal beam of the present invention, an inner bending point is provided on the bending section, and the inner bending point is located at the front end of the outer bending point; the inner panel forms a first bending inducing rib at the inner bending point, and the first bending inducing rib is two provided at both ends of the inner panel in the width direction; the outer panel forms a second bending inducing rib at the inner bending point, and the second bending inducing rib is two provided at both ends of the outer panel in the width direction.

[0014] In some optional embodiments, the outer panel is further provided with a transverse reinforcement rib, which extends along the front-to-rear direction and is located between the inner bending point and the outer bending point; the longitudinal beam also includes a stabilizing section located at the rear end of the bending section, the stabilizing section is bent relative to the bending section, and the stabilizing section is used to connect the A-pillar.

[0015] In some optional embodiments, the height of the outer panel in the bending section gradually decreases from the outer bending point to the connection with the stabilizing section.

[0016] A vehicle according to an embodiment of the second aspect of the present invention includes the longitudinal beam according to the embodiment of the first aspect of the present invention.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic structural diagram of a longitudinal beam in some embodiments of the present invention;

[0020] Figure 2 Schematic diagrams of the structures of inner panels of some embodiments of the present invention and their partial enlarged views;

[0021] Figure 3 Schematic diagram of the position of the reinforcement plate in the longitudinal beam energy absorption cavity in some embodiments of the present invention;

[0022] Figure 4 Schematic diagram of the position of the reinforcement plate on the inner plate in some embodiments of the present invention;

[0023] Figure 5 This is a schematic structural diagram of a reinforcement plate in some embodiments of the present invention;

[0024] Figure 6 Schematic diagram of the shape of the reinforcement plate in some embodiments of the present invention;

[0025] Figure 7 This is a schematic structural diagram of a first energy absorbing member in some embodiments of the present utility model;

[0026] Figure 8 A schematic diagram of a position of a first energy absorbing member on a reinforcing plate in some embodiments of the present invention;

[0027] Figure 9 This is a schematic diagram of another position of the first energy absorbing member on the reinforcing plate in some embodiments of the present invention;

[0028] Figure 10 A schematic diagram of a position of the second energy absorbing member on the inner panel in some embodiments of the present invention;

[0029] Figure 11 This is another schematic diagram of the position of the second energy absorbing member on the inner panel in some embodiments of the present invention;

[0030] Figure 12 This is a schematic structural diagram of the second energy component in some embodiments of the present utility model;

[0031] Figure 13 Schematic diagrams of the structures of the outer panels of some embodiments of the present invention and their partial enlarged views;

[0032] Figure 14 Schematic cross-sectional view of outer panels of some embodiments of the present invention.

[0033] Reference numerals:

[0034] Longitudinal beam 100 , inner plate 1 , first bending inducing rib 11 , second bending inducing rib 12 , inducing groove 13 , outer plate 2 , reinforcing plate 4 , first section 41 , second section 42 , third section 43 , first inclined section 44 , second inclined section 45 , flange 46 .

[0035] Longitudinal beam energy absorption cavity 10,

[0036] Crushing section 30, vertical reinforcement 31,

[0037] Bending section 50, outer bending point 51, inner bending point 52, energy absorbing assembly 53, energy absorbing member 531, first energy absorbing member 532, second energy absorbing member 533, transverse reinforcing rib 54,

[0038] Stabilizing section 70. DETAILED DESCRIPTION

[0039] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0040] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction and be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0041] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0042] Reference below Figures 1-14The longitudinal beam 100 according to the embodiment of the first aspect of the present invention is described below. The longitudinal beam 100 involved in the present invention is the front longitudinal beam 100 of a vehicle, and will not be described in detail below.

[0043] like Figure 1 As shown, the longitudinal beam 100 according to some embodiments of the first aspect of the present utility model.

[0044] Combine Figure 1-Figure 2 The longitudinal beam 100 extends along the front-to-back direction, and at least one section of the longitudinal beam 100 is a bending section 50. The bending section 50 is provided with an outer bending point 51. Here, the front-to-back direction is the front-to-back direction of the vehicle in normal travel.

[0045] It is worth noting that the bent section 50 of the longitudinal beam 100 generally extends in the fore-aft direction of the vehicle. However, when a collision occurs, the outer bending point 51 is subjected to force and will bend. This allows the longitudinal beam 100 to absorb and disperse the collision energy through plastic deformation when subjected to an impact, thereby reducing the direct impact of external forces on other vehicle structures.

[0046] In addition, by providing the bending section 50, when the longitudinal beam 100 bends under impact, its overall length will be shortened accordingly, which means that the shortened longitudinal beam can reduce or avoid intrusion into the cockpit space, thereby improving the integrity of the cockpit and providing additional survival space and time for the driver and passengers.

[0047] In some optional embodiments, the longitudinal beam 100 is provided with multiple bending sections 50, with the bending points arranged sequentially along the front-to-back direction. Therefore, when the vehicle encounters a collision, the bending sections 50 can bend in a predetermined order, gradually converting the collision energy into deformation energy of the longitudinal beam 100, thereby reducing the impact on the passenger compartment and improving vehicle safety.

[0048] Combine Figure 1 The longitudinal beam 100 includes an inner panel 1 and an outer panel 2 connected to each other. The inner panel 1 and the outer panel 2 are both extended in the front-rear direction. The inner panel 1 and the outer panel 2 together form a longitudinal beam energy absorption cavity 10.

[0049] In some embodiments, the front end of the longitudinal beam 100 is connected to the front anti-collision beam of the vehicle, and the rear end of the longitudinal beam 100 is connected to the A-pillar and the front cross member of the vehicle.

[0050] When a vehicle collides, especially in a head-on collision, the front anti-collision beam is impacted first, subsequently transferring the impact force to the side member 100. The bent section 50 and side member energy-absorbing cavity 10 within the side member 100 absorb and disperse energy, protecting the vehicle structure. This also improves the strength and rigidity between the front side member 100 and the vehicle's anti-collision beam and front cross member.

[0051] like Figure 2As shown, an induction groove 13 is provided on the inner plate 1 , and the induction groove 13 is located at the outer bending point 51 .

[0052] The induction groove 13 is recessed into the longitudinal beam energy-absorbing cavity 10 . When subjected to external force, the induction groove 13 is easily deformed, thereby playing a role of crushing guide during a collision.

[0053] The provision of the guiding grooves 13 enhances the controllability of the longitudinal beam 100's collapse during a collision. The positioning of the guiding grooves 13 precisely guides the longitudinal beam 100 to an orderly collapse along a predetermined path. This process not only ensures effective absorption of collision energy but also prevents severe damage to the vehicle structure that could result from disordered collapse, further enhancing the vehicle's overall safety.

[0054] Combine Figure 2 The longitudinal beam 100 also includes an energy absorbing assembly 53 located on the bending section 50. The energy absorbing assembly 53 includes at least two energy absorbing members 531 arranged in the front-to-rear direction. At least two energy absorbing members 531 are located on the front and rear sides of the outer bending point 51, so that when the longitudinal beam 100 bends at the outer bending point 51, at least two energy absorbing members 531 squeeze and absorb energy.

[0055] When a force is applied to the longitudinal beam 100, it bends at the outer bending point 51. During this bending process, the energy absorber 531 located in front of the outer bending point 51 moves rearward due to the bending of the longitudinal beam 100. As the front energy absorbers 531 move rearward, they come into contact with the energy absorbers 531 located behind the outer bending point 51. This contact causes the energy absorbers 531 in the two regions to squeeze against each other, causing deformation. During this squeezing process, the energy absorbers 531 in the two regions jointly absorb and disperse the energy generated by the collision.

[0056] This design allows the longitudinal beam 100 to more effectively absorb energy during a collision, mitigating the impact on the vehicle structure and passenger compartment. Furthermore, because the energy absorbers 531 are located at the front and rear of the kink, they work together to ensure the longitudinal beam 100 collapses in an orderly manner along a predetermined path, enhancing the overall vehicle's collision safety.

[0057] In some optional embodiments, the energy absorber 531 is positioned on the inner panel 1 and outside the longitudinal beam energy absorption cavity 10. First, the energy absorber 531 is positioned directly on the inner panel 1. As a crucial component of the longitudinal beam 100, the inner panel 1's strength and rigidity directly impact the load-bearing capacity of the entire longitudinal beam 100. By tightly integrating the energy absorber 531 with the inner panel 1, the stresses generated during a collision can be effectively dispersed, preventing the longitudinal beam 100 from undergoing sudden, uncontrolled deformation, thereby maintaining the structural integrity and stability. Second, the energy absorber 531 is positioned outside the longitudinal beam energy absorption cavity 10, enabling it to respond quickly in the early stages of a collision. At the moment the longitudinal beam 100 bends during a collision, the energy absorber 531 immediately senses the impact force and begins to absorb and deform, thereby dissipating some of the collision energy. This pre-positioned energy absorption mechanism effectively mitigates the direct impact of the collision on other vehicle structures, buying valuable time for subsequent collision protection.

[0058] In some optional embodiments, a cavity is formed between the energy absorbing member 531 and the inner panel 1. This cavity allows the energy absorbing member 531 to deform more significantly when impacted, thereby absorbing more energy. This deformation can be compression, bending, or shearing, for example.

[0059] Moreover, by setting up the cavity, the amount of energy-absorbing material required can be reduced while ensuring safety performance, thereby achieving the purpose of reducing weight, which in turn helps to achieve lightweighting of the vehicle.

[0060] In the present application, the cross-sectional shape of the cavity can be very flexible, and can be rectangular, circular, triangular, or an irregular shape.

[0061] According to some embodiments of the present invention, the longitudinal beam 100, such as Figure 3 As shown, the energy absorbing member 531 includes: a first energy absorbing member 532 , which is located in the longitudinal beam energy absorbing cavity 10 , and at least two first energy absorbing members 532 are provided on the front and rear sides of the outer bending point 51 .

[0062] First, the first energy absorber 532 disposed within the longitudinal beam energy absorption cavity 10 can enhance the overall structural strength of the longitudinal beam 100. Optionally, the first energy absorber 532 is connected to the inner wall of the longitudinal beam energy absorption cavity 10 via welding, screwing, or riveting. The installation of the first energy absorber 532 enhances the structural strength of the longitudinal beam 100. During normal vehicle operation, the longitudinal beam 100 can withstand various road loads and vibrations. In the event of a collision, the first energy absorber 532 forms a protective barrier, working together with the main structure of the longitudinal beam 100 to resist impact and thereby reduce the possibility of structural damage.

[0063] When a vehicle collides, the impact force is transmitted to the longitudinal beam 100. At this point, the longitudinal beam 100 bends, causing the first energy absorbers 532 located in front and behind the outer bending point 51 to squeeze and deform, absorbing and dissipating the energy generated by the collision. This design effectively mitigates and disperses the collision energy, reducing the impact on other parts of the vehicle structure and thus protecting the safety of the driver and passengers.

[0064] like Figure 3-Figure 4 As shown, in some optional embodiments, the longitudinal beam 100 further includes: a reinforcing plate 4, which is arranged in the longitudinal beam energy absorption cavity 10, and the reinforcing plate 4 extends along the front-to-back direction, and the first energy absorbing member 532 is installed on the reinforcing plate 4.

[0065] The reinforcing plate 4 extends in the front-to-rear direction, effectively increasing the force-bearing area of ​​the longitudinal beam 100 during a collision, thereby helping to disperse and transmit the impact force from the front, reducing local stress concentration, and improving the overall bending and torsional resistance of the longitudinal beam 100.

[0066] Furthermore, the reinforcement plate 4 is integrated with the main structure of the longitudinal beam 100 to form a more robust support system. In the event of a collision, this system can more effectively absorb and dissipate collision energy, reduce the impact of the collision on the passenger compartment, and enhance protection for the driver and passengers.

[0067] In addition, during long-term driving, the vehicle may face various complex road conditions and potential collision risks. The application of the reinforcing plate 4 enhances the durability of the longitudinal beam 100, reduces fatigue cracks or deformation caused by repeated stress, and extends the service life of the vehicle.

[0068] The first energy absorber 532 is mounted on the reinforcement plate 4. The combination of the first energy absorber 532 and the reinforcement plate 4 achieves phased absorption of collision energy. First, the reinforcement plate 4 acts as the first line of defense, partially resisting the impact through its inherent rigidity and strength. Subsequently, the first energy absorber 532 takes effect, further absorbing and dissipating the collision energy through compression deformation. This phased absorption approach helps mitigate the direct impact of the collision on the longitudinal beam 100 and other vehicle structures, improving overall protection.

[0069] Optionally, the cross-sectional shape of the first energy absorbing member 532 can be very flexible, and can be rectangular, circular, triangular, or an irregular shape. Figure 7 In the illustrated embodiment, the first energy absorbing member 532 has a rectangular cross-section.

[0070] In some embodiments, such as that shown in Figure 3, the reinforcing plate 4 includes a first section 41, a second section 42, and a third section 43, arranged in sequence along the front-to-back direction. The first section 41 connects to the inner panel 1. The second section 42 is located at the outer bend point 51. The third section 43 connects to the inner panel 1. The second section 42 protrudes relative to the first and third sections 41, 43 toward the outer panel 2 and is spaced apart from the outer panel 2.

[0071] In the above embodiment, first section 41 is directly connected to inner panel 1 of longitudinal beam 100. This means it is located internally within longitudinal beam 100, providing additional support and rigidity to inner panel 1 while also serving as a starting point for collision force transmission. When an external impact forces the longitudinal beam 100, first section 41 quickly disperses and transmits the force to the subsequent reinforcement panel 4 structure, mitigating the direct impact on inner panel 1.

[0072] The third section 43 is connected to the inner panel 1 of the longitudinal beam 100. It not only provides additional support and rigidity for the inner panel 1 but also serves as the endpoint for collision force transmission. When the collision force is transmitted to the third section 43 through the first and second sections 41 and 42, the third section 43 continues to disperse and absorb the remaining energy, ensuring that the entire longitudinal beam 100 structure remains relatively stable during a collision.

[0073] The second section 42 is located at the outer bending point 51 of the longitudinal beam 100, which is the part of the longitudinal beam 100 that is subjected to greater bending and shear forces. By locating the second section 42 at the outer bending point 51, the strength and rigidity of the second end can be improved to a certain extent, thereby enhancing the overall stability and durability of the longitudinal beam 100.

[0074] Compared to the first and third sections 41 and 43, the second section 42 protrudes and extends toward the outer panel 2. This design creates a bulge in the reinforcement panel 4 that faces the outer bending point 51. In the event of a collision, this structure helps the reinforcement panel 4 bend outward, more effectively guiding its deformation during the bending process and thus enhancing the controllability of the longitudinal beam 100's deformation. Furthermore, a certain distance is maintained between the second section 42 and the outer panel 2, creating a buffer zone. When the reinforcement panel 4 deforms, the second section 42 does not interfere with the deformation of the outer panel 2.

[0075] This three-section reinforcement plate 4 design forms a continuous support system within the longitudinal beam 100, enhancing the structural strength and rigidity of the longitudinal beam 100 while also improving its energy absorption efficiency and stability during a collision. Furthermore, the shape of the reinforcement plate 4 improves collision controllability and further protects the safety of the vehicle structure.

[0076] In some optional embodiments, such as Figure 3-Figure 6As shown, the reinforcement plate 4 further includes a first inclined section 44 and a second inclined section 45. The first inclined section 44 connects between the first section 41 and the second section 42. The second inclined section 45 connects between the third section 43 and the second section 42. The first inclined section 44, the second section 42, and the second inclined section 45 form a V-shape. A first energy absorber 532 is mounted on each of the first and second inclined sections 44, 45 on the side facing the inner panel 1.

[0077] The first inclined section 44 connects the first section 41 and the second section 42 to ensure smooth force transmission and dispersion. This design not only strengthens the connection between the first section 41 and the second section 42, but also enables the entire reinforcement plate 4 to more effectively disperse and absorb collision energy when subjected to force.

[0078] Corresponding to the first inclined section 44, the second inclined section 45 connects between the third section 43 and the second section 42. It also has an inclined angle and length to ensure smooth force transmission and distribution. The second inclined section 45 is also designed to be symmetrical with the first inclined section 44 to maintain the overall balance and stability of the reinforcement plate 4.

[0079] like Figure 9 As shown, specifically, the second section 42 serves as the central portion of the reinforcement plate 4. The second section 42, together with the first inclined section 44 and the second inclined section 45, forms a V-shaped structure. This V-shaped design not only enhances the overall rigidity and stability of the reinforcement plate 4, but also enables the second section 42 to more effectively guide and disperse the impact force during a collision, preventing damage caused by localized stress concentration.

[0080] In some optional embodiments, such as Figure 4-Figure 5 、 Figure 8 As shown, the reinforcing plate 4 further includes two flanges 46 connected to opposite sides of the second section 42. The first section 41 and the third section 43 are located on two sides of the second section 42, and the two flanges 46 are connected to the other two sides of the second section 42.

[0081] In the above technical solution, the reinforcing plate 4 includes two flanges 46, located on opposite sides of the second section 42. Specifically, the first section 41 and the third section 43 already occupy two sides of the second section 42, while the two flanges 46 connect the two sides of the second section 42 not occupied by the first section 41 and the third section 43. This structural arrangement ensures that the second section 42 has sufficient connection area for more effective connection with other structural components. As a result, it can more comprehensively distribute and resist forces from all directions, significantly improving the stability and strength of the entire structure.

[0082] Each flange 46 is sandwiched between the inner panel 1 and the outer panel 2 and welded together. The reinforcing plate 4 is welded to both the inner panel 1 and the outer panel 2 to form an integral structure. This welded connection not only ensures that the reinforcing plate 4 is firmly connected to both the inner panel 1 and the outer panel 2. When the inner panel 1 or the outer panel 2 is deformed by external forces, this welded structure can transmit the impact force to the reinforcing plate 4, thereby causing the reinforcing plate 4 to deform accordingly, thereby absorbing and dissipating the energy. This design allows the reinforcing plate 4 to provide excellent support when the inner panel 1 and the outer panel 2 are subjected to forces, and its deformation ability effectively absorbs and mitigates impact forces.

[0083] According to some embodiments of the present invention, the longitudinal beam 100, such as Figure 10-12 As shown, the energy absorbing member 531 includes a second energy absorbing member 533. The second energy absorbing member 533 is located outside the longitudinal beam energy absorbing cavity 10 and is installed on the side of the inner panel 1 away from the outer panel 2. There are at least two second energy absorbing members 533 located on both sides of the outer bending point 51.

[0084] The second energy absorbing member 533 can improve the overall structural strength of the longitudinal beam 100. In the event of a vehicle collision, this configuration can enhance the structural integrity and stability of the longitudinal beam 100 from the side.

[0085] Combine Figure 1 Two second energy absorbers 533 are provided, one on each side, located in front of and behind the outer bending point 51. When the longitudinal beam 100 bends due to external forces during a collision, the outer bending point 51 bulges outward. At this point, the two second energy absorbers 533 on the inner panel 1 are squeezed and deformed due to their proximity. This deformation of the second energy absorbers 533 effectively absorbs a significant amount of impact energy, thereby enhancing the energy absorption and cushioning performance of the longitudinal beam 100.

[0086] According to some embodiments of the present invention, the longitudinal beam 100, such as Figure 1 、 Figure 2 and Figure 13 As shown, at least one section of the longitudinal beam 100 is a crushed section 30, which is located at the front end of the bent section 50. On at least one of the inner panel 1 and the outer panel 2, vertical ribs 31 are formed in the crushed section 30. The vertical ribs 31 are arranged in sequence along the front-to-back direction.

[0087] Specifically, when the longitudinal beam 100 encounters an impact, especially a frontal collision, the crushing section 30 responds first, absorbing some of the energy generated by the collision through its unique extrusion deformation mechanism, thereby providing an important cushioning effect. This process not only helps mitigate the impact on the vehicle's overall structure but also effectively improves the safety of the driver and passengers.

[0088] In some optional embodiments, vertical ribs 31 are formed on the inner panel 1 in the crush section 30. When the vehicle encounters a collision, especially a strong frontal impact, the vertical ribs 31 on the inner panel 1 will begin to deform due to the compression of the external force. As the collision continues, these vertical ribs 31 may overlap, that is, adjacent vertical ribs 31 fit together or approach each other due to compression, causing the overall shape of the inner panel 1 in this area to change. At the same time, due to the overlapping of the vertical ribs 31 on the inner panel 1, the corresponding area of ​​the outer panel 2 is also more likely to be crushed in the crush section 30. This arrangement guides and accelerates the absorption process of the collision energy through the overlapping of the vertical ribs 31 on the inner panel 1. When both the inner panel 1 and the outer panel 2 are crushed in the crush section 30, they together form an efficient energy absorption area, thereby effectively reducing the impact of the collision on other parts of the vehicle, and enhancing the energy absorption effect of the longitudinal beam 100 to improve the safety performance of the vehicle in the face of a collision. This arrangement not only optimizes the energy absorption mechanism of the longitudinal beam 100 during a collision, but also requires only processing the vertical ribs 31 on the inner panel 1, which can also reduce processing costs and improve production efficiency.

[0089] In some optional embodiments, vertical ribs 31 are formed on the outer panel 2 in the crushed section 30. Similarly, these vertical ribs 31 play a guiding role during the collision. When the vehicle is subjected to a collision, the vertical ribs 31 on the outer panel 2 will also be deformed due to the squeezing of the external force, resulting in overlapping. This overlapping not only enhances the energy absorption capacity of the outer panel 2 in the crushed section 30, but more importantly, it provides a clear guide for the crushing process of the inner panel 1. Due to the overlapping of the vertical ribs 31 of the outer panel 2, the inner panel 1 is more likely to deform along a predetermined path when squeezed, thereby achieving more orderly and efficient energy absorption. By processing the vertical ribs 31 only on the outer panel 2, not only the energy absorption mechanism of the longitudinal beam 100 during a collision is made more efficient, but also the processing cost can be reduced, while improving the overall production efficiency.

[0090] To enhance the crushing effect of the longitudinal beam 100 in the crushing section 30 and further strengthen its energy absorption capacity, in some embodiments, vertical ribs 31 are provided on both the inner panel 1 and the outer panel 2. This arrangement enables the vertical ribs 31 on the inner and outer panels 1 and 2 to interact with each other during a collision, forming a more efficient crushing system. This also ensures that the crushing process proceeds along a predetermined path, thereby improving the consistency and efficiency of energy absorption.

[0091] In some optional embodiments, when vertical ribs 31 are provided on the inner panel 1, the vertical ribs 31 protrude from a portion of the inner panel 1 toward the longitudinal beam energy absorption cavity 10 or away from the longitudinal beam energy absorption cavity 10, and two adjacent vertical ribs 31 arranged in the front-to-back direction have opposite concave and convex directions.

[0092] Specifically, among the continuous vertical ribs 31 in the front-to-back direction of the inner plate 1 of the longitudinal beam 100, one vertical rib 31 protrudes toward the longitudinal beam energy absorption cavity 10, while the next adjacent vertical rib 31 protrudes in the opposite direction, that is, away from the energy absorption cavity. This alternating concave-convex arrangement pattern forms a dynamic and efficient energy absorption network on the longitudinal beam 100. When a collision occurs, this design enables the front and rear adjacent vertical ribs 31 to protrude in different directions. When an external force acts on the longitudinal beam 100, a vertical rib 31 on the inner plate 1 may further protrude toward the energy absorption cavity due to pressure, while its adjacent vertical rib 31 protrudes in the opposite direction due to tension or shear force. This interaction mechanism not only disperses the impact force generated by the collision, but also effectively absorbs energy through the deformation of the vertical ribs 31. More importantly, because the concave and convex directions of adjacent vertical ribs 31 are opposite, a relationship of mutual support and restraint is formed between them. This relationship helps maintain the overall stability and structural integrity of the longitudinal beam 100 during a collision and prevents localized excessive deformation of the longitudinal beam 100 .

[0093] As the inner panel 1 collapses, the corresponding section of the outer panel 2 is also affected. Due to the collapse of the inner panel's vertical ribs 31, the outer panel 2 also begins to deform under the traction and compression of the collapsing inner panel 1. The deformation of the outer panel 2 complements that of the inner panel 1, forming a highly efficient energy absorption zone. Within this zone, the energy generated by the collision is absorbed by the coordinated deformation of the inner and outer panels 1 and 2, thereby reducing the impact on other parts of the vehicle and enhancing the energy absorption function of the longitudinal beam 100.

[0094] When vertical ribs 31 are provided on the outer panel 2, the vertical ribs 31 protrude from a portion of the outer panel 2 toward the longitudinal beam energy absorption cavity 10 or away from the longitudinal beam energy absorption cavity 10, and two adjacent vertical ribs 31 arranged in the front-to-back direction have opposite concave and convex directions.

[0095] During a collision, this arrangement allows adjacent vertical ribs 31 to independently respond to forces from different directions. Specifically, the vertical ribs 31 protruding toward the longitudinal beam energy-absorbing cavity 10 will further concave inward when subjected to pressure, absorbing and dispersing the impact force. Meanwhile, the vertical ribs 31 protruding away from the longitudinal beam energy-absorbing cavity 10 will expand outward when subjected to tension or shear forces, also participating in the energy absorption process. This interaction of the vertical ribs 31 not only effectively disperses the impact force generated by a collision, but also significantly improves energy absorption efficiency through their deformation.

[0096] Furthermore, the collapse of the vertical ribs 31 on the outer panel 2 causes the inner panel 1 to collapse accordingly, allowing the inner and outer panels 2 to deform simultaneously. This coordinated deformation of the inner and outer panels 1 and 2 further enhances the energy absorption of the longitudinal beam 100, thereby improving the overall collision safety of the vehicle.

[0097] According to some embodiments of the longitudinal beam 100 of the present invention, an inner bending point 52 is provided on the bending section 50 , and the inner bending point 52 is located at the front end of the outer bending point 51 .

[0098] The main function of the inner bending point 52 is to guide the longitudinal beam 100 to bend inward during a collision. Simultaneously, the outer bending point 51 and the inner bending point 52 work in tandem, but in opposite directions, jointly causing the longitudinal beam 100 to bend in two opposite directions upon application of force. This design effectively shortens the overall length of the bent longitudinal beam 100, thereby minimizing the encroachment on other vehicle interior spaces, particularly reducing the area of ​​the longitudinal beam 100 protruding from the passenger compartment, and thus improving the safety of the driver and passengers.

[0099] The inner panel 1 forms a first bending inducing rib 11 at the inner bending point 52 . The first bending inducing rib 11 is provided at two ends of the inner panel 1 in the width direction.

[0100] The first bending inducing rib 11 serves as a guiding structure, which enables the inner panel 1 to bend along a predetermined path when subjected to external force, thereby avoiding unnecessary twisting or irregular deformation, improving the controllability and reliability of the longitudinal beam 100 during a collision, and providing safer and more reliable protection for the driver and passengers.

[0101] First bend-inducing ribs 11 are positioned at both ends of the inner panel 1's width. First, during daily use, their placement ensures the full performance of the longitudinal beam 100. Second, in the event of a collision, the first bend-inducing ribs 11 are highly effective. They guide the longitudinal beam 100 to bend in a more controlled manner, effectively preventing disordered deformation caused by external impacts. This controlled bending process not only helps improve the longitudinal beam's 100 energy absorption efficiency but also minimizes the impact of a collision on the vehicle's interior, which is crucial for protecting the passenger compartment.

[0102] The outer plate 2 forms a second bending inducing rib 12 at the inner bending point 52 . The second bending inducing rib 12 is provided at two ends of the outer plate 2 in the width direction.

[0103] The second bend-inducing ribs 12 also serve as guides for the bending of the longitudinal beam 100. When subjected to external forces, they bend the outer panel 2 along a predetermined path. On the one hand, the second bend-inducing ribs 12 do not interfere with the existing structure of the longitudinal beam 100, allowing the longitudinal beam 100 to fully utilize its performance. On the other hand, in the event of a collision, the second bend-inducing ribs 12 guide the outer panel 2 to bend in a controlled manner, effectively preventing disordered deformation caused by external impacts. This further enhances the safety and reliability of the longitudinal beam 100, and ultimately improves vehicle safety.

[0104] In some optional embodiments, the first bending inducing ribs 11 induce the longitudinal beam 100 to bend inward, and the second bending inducing ribs 12 induce the longitudinal beam 100 to bend outward.

[0105] First, thanks to the first and second bending inducing ribs 11 and 12, the longitudinal beam 100 can bend in opposite directions at two different locations when subjected to external forces, effectively dispersing the concentrated impact of external forces on the longitudinal beam 100. This dispersive effect enables the longitudinal beam 100 to better absorb and disperse energy generated by collisions or other external factors, thereby improving its ability to handle external forces and enhancing the strength and durability of the vehicle's overall structure.

[0106] Secondly, because the two bending directions of the longitudinal beam 100 are away from each other, the bent longitudinal beam 100 is relatively short in overall length, which can minimize the impact on other spaces inside the vehicle, thereby helping to improve the safety of the cabin.

[0107] In some Figure 13 In the illustrated embodiment, a transverse reinforcing rib 54 is further provided on the outer panel 2 . The transverse reinforcing rib 54 extends in the front-to-rear direction and is located between the inner bending point 52 and the outer bending point 51 .

[0108] In the above technical solution, the transverse reinforcement ribs 54 can provide additional support for the longitudinal beam 100, improve its ability to resist bending, and ensure that the longitudinal beam 100 is not easily deformed when bearing load.

[0109] Furthermore, the presence of the transverse reinforcement ribs 54 helps to distribute the load more evenly on the longitudinal beam 100 , preventing stress concentration, thereby improving the load transfer efficiency of the entire structural system.

[0110] Since the transverse reinforcing rib 54 is located between the inner bending point 52 and the outer bending point 51 , it can help maintain the shape stability of this area and prevent unnecessary twisting or deformation due to external forces.

[0111] In some optional embodiments, such as Figure 1 As shown, the longitudinal beam 100 further includes a stabilizing section 70 located at the rear end of the bending section 50 . The stabilizing section 70 is bent relative to the bending section 50 , and is used to connect to the A-pillar.

[0112] In the above technical solution, the stabilizing section 70 primarily serves as a connection to the A-pillar. Serving as a bridge between the longitudinal beam 100 and other vehicle body components, the stabilizing section 70 transmits and disperses collision and other external forces. By providing this stabilizing section 70, external forces can be effectively directed and dispersed to other structural areas of the vehicle, mitigating impacts to localized areas and protecting the vehicle's integrity.

[0113] In some optional embodiments, the height of the outer panel 2 in the bending section 50 gradually decreases from the outer bending point 51 to the connection with the stabilizing section 70 .

[0114] The cross section of the longitudinal beam 100 changes before and after the outer bending point 51. Figure 14 The cross section of the longitudinal beam 100 decreases gradually and evenly from the front to the rear. Such a cross section change is conducive to the longitudinal beam 100 stably bending outward at the outer bending point 51.

[0115] A vehicle according to an embodiment of the second aspect of the present invention includes the longitudinal beam 100 implemented in the first aspect of the present application.

[0116] By providing the longitudinal beam 100 with good energy absorption and buffering performance, the reliability and safety of the vehicle can be improved.

[0117] It can be known that the vehicle mentioned in the present invention can be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc.

[0118] Reference below Figure 1 - Figure 14 The longitudinal beam 100 according to the embodiment of the present invention is described in detail with reference to a specific embodiment. It should be understood that the following description is merely an illustrative illustration and does not specifically limit the present invention.

[0119] Reference Figure 1 The longitudinal beam 100 extends along the front-to-back direction, and includes: an inner plate 1, an outer plate 2 and a reinforcement plate 4.

[0120] The inner panel 1 and the outer panel 2 are both extended in the front-rear direction and connected to each other to form a longitudinal beam energy absorption cavity 10 .

[0121] Reference Figure 3 The reinforcement plate 4 is arranged in the longitudinal beam energy absorption cavity 10, and the reinforcement plate 4 is extended along the front and rear directions.

[0122] Reference Figure 1 The longitudinal beam 100 includes, from front to back, a crushing section 30 , a bending section 50 and a stabilizing section 70 .

[0123] Reference Figure 2 、 Figure 13 The crushing section 30 includes vertical ribs 31. The vertical ribs 31 are provided on the inner plate 1 and the outer plate 2. There are multiple vertical ribs 31 and they are arranged in sequence along the front-to-back direction.

[0124] The vertical ribs 31 provided on the inner panel 1 extend along the width of the inner panel 1 , and the vertical ribs 31 on the inner panel 1 protrude from a portion of the inner panel 1 toward the longitudinal beam energy absorption cavity 10 or away from the longitudinal beam energy absorption cavity 10 , and two adjacent vertical ribs 31 arranged in the front-to-back direction have opposite concave and convex directions.

[0125] The vertical ribs 31 provided on the outer panel 2 extend along the width of the outer panel 2, and the vertical ribs 31 on the outer panel 2 protrude from a portion of the outer panel 2 toward the longitudinal beam energy absorption cavity 10 or away from the longitudinal beam energy absorption cavity 10, and two adjacent vertical ribs 31 arranged in the front-to-back direction have opposite concave and convex directions.

[0126] Reference Figure 1 、 Figure 13 The bending section 50 includes an outer bending point 51, an inner bending point 52, an energy absorbing component 53, and a transverse reinforcing rib 54. The inner bending point 52 is located at the front end of the outer bending point 51.

[0127] The inner panel 1 forms a first bending inducing rib 11 at the inner bending point 52 . The first bending inducing rib 11 is provided at two ends of the inner panel 1 in the width direction.

[0128] The outer plate 2 forms a second bending inducing rib 12 at the inner bending point 52 . The second bending inducing rib 12 is provided at two ends of the outer plate 2 in the width direction.

[0129] An induction groove 13 is provided on the outer bending point 51 , and the induction groove 13 is located on the inner plate 1 .

[0130] Reference Figure 3-Figure 12 The energy absorbing assembly 53 includes a first energy absorbing member 532 and a second energy absorbing member 533 .

[0131] The first energy absorbing member 532 is located in the longitudinal beam energy absorbing cavity 10 and is mounted on the reinforcing plate 4. There are two first energy absorbing members 532 located at the front and rear sides of the outer bending point 51.

[0132] The second energy absorbing member 533 is located outside the longitudinal beam energy absorbing cavity 10 and is installed on the side of the inner panel 1 away from the outer panel 2 . There are two second energy absorbing members 533 located on the front and rear sides of the outer bending point 51 .

[0133] Reference Figure 4-Figure 6 The reinforcing plate 4 includes: a first section 41 , a second section 42 , a third section 43 , a first inclined section 44 , a second inclined section 45 and a flange 46 .

[0134] The first section 41 , the second section 42 and the third section 43 are sequentially arranged along the front-to-back direction.

[0135] The first section 41 is connected to the inner panel 1. The second section 42 is located at the outer bending point 51. The third section 43 is connected to the inner panel 1.

[0136] The second section 42 protrudes toward the outer panel 2 relative to the first section 41 and the third section 43 , and the second section 42 is spaced apart from the outer panel 2 .

[0137] The first inclined section 44 is connected between the first section 41 and the second section 42 .

[0138] The second inclined section 45 is connected between the third section 43 and the second section 42 .

[0139] The first inclined section 44 , the second section 42 and the second inclined section 45 are V-shaped. A first energy absorbing member 532 is respectively installed on the first inclined section 44 and the second inclined section 45 on a side facing the inner panel 1 .

[0140] There are two flanges 46, one connected to opposite sides of the second section 42. The first section 41 and the third section 43 are located on two sides of the second section 42, and the other two flanges 46 are connected to the other two sides of the second section 42. Each flange 46 is sandwiched between the inner panel 1 and the outer panel 2 and welded together.

[0141] Reference Figure 13 The transverse reinforcing rib 54 extends along the front-to-back direction, and the transverse reinforcing rib 54 is located between the inner bending point 52 and the outer bending point 51.

[0142] Reference Figure 14 The stabilizing section 70 is bent relative to the bending section 50 and is used to connect the A-pillar. The height of the outer panel 2 at the bending section 50 gradually decreases from the outer bending point 51 to the connection with the stabilizing section 70.

[0143] Other components of the longitudinal beam according to the embodiment of the present invention, such as the vehicle, are known to those skilled in the art and will not be described in detail here.

[0144] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0145] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A longitudinal beam, characterized in that: The longitudinal beam is extended in the front-rear direction, at least one section of the longitudinal beam is a bent section, and an outer bending point is provided on the bent section; The longitudinal beam includes an inner plate and an outer plate connected to each other, the inner plate and the outer plate are both extended along the front-rear direction, the inner plate and the outer plate together form a longitudinal beam energy absorption cavity, and the inner plate is provided with an induction groove, and the induction groove is located at the outer bending point; The longitudinal beam also includes an energy absorbing component located on the bending section, and the energy absorbing component includes at least two energy absorbing parts arranged along the front-to-back direction, and at least two of the energy absorbing parts are located on the front and rear sides of the outer bending point, so that when the longitudinal beam bends at the outer bending point, at least two of the energy absorbing parts squeeze and absorb energy.

2. The longitudinal beam according to claim 1, characterized in that The energy absorbing member includes a first energy absorbing member, which is located in the energy absorbing cavity of the longitudinal beam. There are at least two first energy absorbing members arranged on the front and rear sides of the outer bending point.

3. The longitudinal beam according to claim 2, characterized in that The longitudinal beam further includes a reinforcing plate, which is disposed in the longitudinal beam energy absorption cavity and extends along the front-rear direction. The first energy absorbing member is mounted on the reinforcing plate.

4. The longitudinal beam according to claim 3, characterized in that The reinforcing plate includes: a first section, the first section being connected to the inner panel; a second section, the second section being located at the outer bending point; a third section, the third section being connected to the inner panel; Wherein, the second section protrudes relative to the first section and the third section toward the outer plate, and the second section is spaced apart from the outer plate; The reinforcing plate further comprises: a first inclined section connected between the first section and the second section; a second inclined section connected between the third section and the second section; The first inclined section, the second section and the second inclined section are V-shaped, and the first energy absorbing member is respectively installed on the side of the first inclined section and the second inclined section facing the inner plate; the reinforcing plate further includes: two flanges connected to opposite sides of the second section; The first section and the third section are located on two sides of the second section, and the two flanges are connected to the other two sides of the second section; Each flange is sandwiched between the inner plate and the outer plate and connected by welding.

5. The longitudinal beam according to claim 1, characterized in that The energy absorbing member includes: a second energy absorbing member, the second energy absorbing member is located outside the longitudinal beam energy absorbing cavity, the second energy absorbing member is installed on the side of the inner panel away from the outer panel, and there are at least two second energy absorbing members arranged on the front and rear sides of the outer bending point.

6. The longitudinal beam according to any one of claims 1 to 5, characterized in that At least one section of the longitudinal beam is a crushed section, and the crushed section is located at the front end of the bent section; On at least one of the inner plate and the outer plate, vertical ribs are formed in the crushed section, and the vertical ribs are multiple and arranged in sequence along the front-to-back direction; When the inner plate is provided with the vertical ribs, the vertical ribs are protruded from a portion of the inner plate toward the longitudinal beam energy absorption cavity or away from the longitudinal beam energy absorption cavity, and two adjacent vertical ribs arranged along the front-to-back direction have opposite concave and convex directions; When the vertical ribs are provided on the outer panel, the vertical ribs protrude from a portion of the outer panel toward the longitudinal beam energy absorption cavity or away from the longitudinal beam energy absorption cavity, and two adjacent vertical ribs arranged along the front-to-back direction have opposite concave and convex directions.

7. The longitudinal beam according to any one of claims 1 to 5, characterized in that An inner bending point is provided on the bending section, and the inner bending point is located at the front end of the outer bending point; The inner plate is formed with first bending inducing ribs at the inner bending point, wherein the first bending inducing ribs are two and are arranged at both ends of the inner plate in the width direction; The outer plate forms a second bending inducing rib at the inner bending point, and the second bending inducing rib is two and is arranged at both ends of the outer plate in the width direction.

8. The longitudinal beam according to claim 7, characterized in that The outer plate is further provided with a transverse reinforcing rib, the transverse reinforcing rib extending along the front-to-back direction, and the transverse reinforcing rib is located between the inner bending point and the outer bending point; The longitudinal beam further includes a stabilizing section located at the rear end of the bending section. The stabilizing section is bent relative to the bending section, and the stabilizing section is used to connect to the A-pillar.

9. The longitudinal beam according to claim 8, characterized in that The height of the outer plate at the bending section gradually decreases from the outer bending point to the connection with the stable section.

10. A vehicle, characterized in that: The invention comprises a longitudinal beam according to any one of claims 1 to 9.

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