Front longitudinal beam and vehicle
By designing the tower mounting area, front collapse structure and rear collapse structure on the front longitudinal beam of the vehicle, multiple stiffness weakening areas are formed, which solves the problem of insufficient energy absorption effect of the front longitudinal beam when the vehicle is colliding at a frontal front at a high speed, and significantly improves the vehicle's protection ability to occupants.
Patent Information
- Application Number
- CN202420307814.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-19
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-02-19
AI Technical Summary
In the prior art, when a vehicle collides at a frontal collision at a high speed, the energy absorption effect of the front longitudinal beam is weak, resulting in the energy absorption effect of the entire front cabin, which is also weak, making it impossible to effectively protect the safety of the occupants.
A front longitudinal beam is designed, including the tower mounting area, the front collapse structure and the rear collapse structure. The front collapse structure and the rear collapse structure form first and second stiffness weakening zones in front and behind the tower mounting area, respectively, to enhance energy absorption capacity.
By setting up a collapsed structure in front and behind the tower mounting area, the energy absorption effect of the front longitudinal beam in front collision is improved, thereby enhancing the vehicle's protection ability to occupants.
Smart Images
Figure CN222682532U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile safety, and in particular relates to a front longitudinal beam and a vehicle. Background Art
[0002] The whole vehicle high-speed frontal collision is a collision condition specified by national standards, domestic regulations such as C-NCAP, and third-party evaluations. It is mainly used to examine the vehicle's ability to protect the safety of the driver and passengers during a high-speed collision.
[0003] Due to consumers' high demand for driving range, electric vehicles generally have large and heavy power battery packs, which greatly increases the vehicle mass compared to the same level of fuel vehicles. For high-speed frontal collisions, heavier vehicle mass means that the vehicle needs to withstand greater impact. During the collision, the front cabin of the vehicle needs to absorb more collision energy to ensure the safety of the occupants.
[0004] In the prior art, during a head-on collision, the energy absorption effect of the vehicle's front longitudinal beam is relatively weak, resulting in a relatively weak energy absorption effect of the entire front cabin. Therefore, how to improve the energy absorption effect of the front longitudinal beam during a head-on collision is a research direction for researchers. Utility Model Content
[0005] The utility model provides a front longitudinal beam and a vehicle, aiming to improve the energy absorption effect of the front longitudinal beam during frontal collision.
[0006] In order to solve the above problems, on the one hand, an embodiment of the utility model provides a front longitudinal beam, on which a tower base mounting area, a front crush structure and a rear crush structure are provided; the tower base mounting area is used to install the tower base; the front crush structure is arranged in front of the tower base mounting area, and is used to form a first stiffness weakened area in front of the tower base mounting area; the rear crush structure is arranged in the tower base mounting area, and is used to form a second stiffness weakened area in the tower base mounting area.
[0007] Optionally, the front crush structure includes a first crush groove and a second crush groove; along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface arranged opposite to each other, wherein the first crush groove is arranged on the first surface and the second crush groove is arranged on the second surface; along the width direction of the front longitudinal beam, the first crush groove and the second crush groove at least partially overlap.
[0008] Optionally, a plurality of the first crumple grooves and the second crumple grooves are provided, and the first crumple grooves are arranged at intervals along the length direction of the front longitudinal beam, and the second crumple grooves are arranged at intervals along the length direction of the front longitudinal beam; the first crumple grooves correspond to the second crumple grooves one by one, and in the width direction of the front longitudinal beam, the corresponding first crumple grooves and the second crumple grooves have at least a portion of overlap.
[0009] Optionally, the rear crumple structure includes a third crumple groove and a fourth crumple groove; along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface arranged opposite to each other, wherein the third crumple groove is arranged on the first surface, and the fourth crumple groove is arranged on the second surface; along the width direction of the front longitudinal beam, the third crumple groove and the fourth crumple groove at least partially overlap; the first surface is located on the outside of the second surface, and along the length direction of the front longitudinal beam, the length of the third crumple groove is greater than the length of the fourth crumple groove.
[0010] Optionally, a middle crush structure is further provided on the front longitudinal beam, and the middle crush structure is arranged between the front crush structure and the rear crush structure, and is used to form a third stiffness weakened zone between the front crush structure and the rear crush structure; the middle crush structure includes a fifth crush groove and a sixth crush groove; along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface arranged opposite to each other, the fifth crush groove is arranged on the first surface, and the sixth crush groove is arranged on the second surface; along the length direction of the front longitudinal beam, the fifth crush groove and the sixth crush groove are staggered, the fifth crush groove is located in the tower seat mounting area, the sixth crush groove is located on the side of the fifth crush groove away from the front crush structure, and the sixth crush groove is located in front of the tower seat mounting area.
[0011] Optionally, the front longitudinal beam includes an upper plate, a lower plate, an inner plate, an outer plate and a reinforcing plate; the inner plate and the outer plate are spaced apart along the width direction of the front longitudinal beam, and the upper plate and the lower plate are spaced apart along the height direction of the front longitudinal beam; the upper plate, the outer plate, the lower plate and the inner plate are connected end to end in sequence to enclose a accommodating cavity; the reinforcing plate is arranged in the accommodating cavity, one end of the reinforcing plate is connected to the inner plate, and the other end of the reinforcing plate is connected to the outer plate; the reinforcing plate is spaced apart from the upper plate, and the reinforcing plate is spaced apart from the lower plate.
[0012] Optionally, the front collapse structure includes a first collapse groove and a second collapse groove; the first collapse groove is arranged on the surface of the outer plate away from the inner plate, and the second collapse groove is arranged on the surface of the inner plate away from the outer plate; along the direction from the inner plate to the outer plate, the first collapse groove and the second collapse groove overlap at least in part; the first collapse groove includes a first groove and a second groove, and the first groove and the second groove are both arranged on the outer plate; the first groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; the second groove is located below the reinforcing plate and extends to the surface of the lower plate away from the upper plate; the second collapse groove includes a third groove and a fourth groove, and the third groove and the fourth groove are both arranged on the inner plate; the third groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; the fourth groove is located below the reinforcing plate and extends to the surface of the lower plate away from the upper plate; along the direction from the upper plate to the lower plate, the first groove and the second groove overlap at least in part, and the third groove and the fourth groove overlap at least in part.
[0013] Optionally, the rear crumple structure includes a third crumple groove and a fourth crumple groove, the third crumple groove is arranged on the surface of the outer plate facing away from the inner plate, and the fourth crumple groove is arranged on the surface of the inner plate facing away from the outer plate; along the length direction of the front longitudinal beam, the length of the third crumple groove is greater than the length of the fourth crumple groove; along the direction from the inner plate to the outer plate, the third crumple groove and the fourth crumple groove at least partially overlap; the third crumple groove is located above the reinforcing plate and extends to the surface of the upper plate facing away from the lower plate; the fourth crumple groove is located above the reinforcing plate and extends to the surface of the upper plate facing away from the lower plate.
[0014] Optionally, the front longitudinal beam is further provided with a middle crush structure, which is arranged between the front crush structure and the rear crush structure, and is used to form a third stiffness weakened zone between the front crush structure and the rear crush structure; the middle crush structure includes a fifth crush groove and a sixth crush groove, the fifth crush groove is arranged on the outer plate, and the sixth crush groove is arranged on the inner plate; along the length direction of the front longitudinal beam, the fifth crush groove and the sixth crush groove are staggered, the fifth crush groove is located in the tower seat installation area, and the fifth crush groove is located in the tower seat installation area. The crush groove is located on the side of the sixth crush groove away from the front crush structure; the fifth crush groove includes a fifth groove and a sixth groove, the fifth groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; the sixth groove is located below the reinforcing plate and extends to the surface of the lower plate away from the upper plate; along the direction from the upper plate to the lower plate, the fifth groove and the sixth groove at least partially overlap; the sixth crush groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate.
[0015] Optionally, the front longitudinal beam also includes a reinforcement; the reinforcement is arranged in the tower seat mounting area, the reinforcement is located in the accommodating cavity, and is located between the reinforcement plate and the lower plate; a notch is provided on the upper surface of the reinforcement, the notch is opposite to the second stiffness weakened area, and the notch extends through to the surface of the reinforcement close to the inner plate, and the notch extends through to the surface of the reinforcement close to the outer plate.
[0016] Optionally, along the length direction of the front longitudinal beam, the reinforcement includes a first structure, a connecting plate and a second structure connected in sequence; the first structure is provided with a first hole, and the first hole penetrates the first structure along the length direction of the front longitudinal beam; the second structure is provided with a second hole, and the second hole penetrates the second structure along the length direction of the front longitudinal beam; the connecting plate is provided with a third hole, and the third hole penetrates the connecting plate along the arrangement direction of the upper plate and the lower plate.
[0017] In order to solve the above problems, on the other hand, an embodiment of the utility model provides a vehicle, characterized in that it includes a tower base and a front longitudinal beam described in any one of the above items, and the tower base is installed in the tower base mounting area; the tower base includes a top plate, a first side plate, a second side plate and a third side plate; the upper ends of the first side plate, the second side plate and the third side plate are all connected to the top plate; the lower ends of the first side plate, the second side plate and the third side plate are all connected to the front longitudinal beam; the second side plate and the third side plate are both located on the outside of the first side plate; the second side plate and the third side plate are spaced apart along the length direction of the front longitudinal beam; along the length direction of the front longitudinal beam, the rear collapse structure is located between the second side plate and the third side plate.
[0018] Optionally, a window is provided on the first side panel, the window penetrates to the lower end surface of the first side panel, and penetrates the first side panel along the width direction of the front longitudinal beam; the second stiffness reduction area is opposite to the window.
[0019] In the front longitudinal beam and vehicle provided by the embodiment of the utility model, in addition to setting a front crush structure in front of the tower base mounting area, a rear crush structure is also set in the tower base mounting area. In this way, in a frontal collision, the front of the tower base mounting area and the tower base mounting area can both crush and absorb energy, thereby improving the front longitudinal beam's absorption effect on the frontal collision energy. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the assembly state of the front longitudinal beam and the tower seat provided in an embodiment of the utility model Figure 1 ;
[0021] Figure 2 This is a schematic diagram of the assembly state of the front longitudinal beam and the tower seat provided in an embodiment of the utility model Figure 2 ;
[0022] Figure 3 This is a schematic diagram of the assembly state of the front longitudinal beam and the tower seat provided in an embodiment of the utility model Figure 3 .
[0023] Reference numerals:
[0024] 100, front longitudinal beam; 200, tower base;
[0025] 101. first surface; 102. second surface;
[0026] 1. Tower installation area;
[0027] 2. front collapse structure; 21. first collapse groove; 211. first groove; 212. second groove; 22. second collapse groove; 221. third groove; 222. fourth groove;
[0028] 3. Rear crush structure; 31. Third crush groove; 32. Fourth crush groove;
[0029] 4. middle collapse structure; 41. fifth collapse groove; 411. fifth groove; 412. sixth groove; 42. sixth collapse groove;
[0030] 51. upper plate; 52. lower plate; 53. inner plate; 54. outer plate; 55. reinforcing plate; 56. accommodating cavity;
[0031] 6. reinforcement member; 61. notch; 62. first structure; 621. first hole; 63. connecting plate; 631. third hole; 64. second structure; 641. second hole;
[0032] 71. Top panel; 72. First side panel; 721. Window; 73. Second side panel; 74. Third side panel. DETAILED DESCRIPTION
[0033] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0034] like Figure 1 and Figure 2 As shown, in one embodiment, a tower base mounting area 1, a front crush structure 2 and a rear crush structure 3 are provided on the front longitudinal beam 100; the tower base mounting area 1 is used to install a tower base 200, and the tower base 200 can be used to connect a shock absorber; the front crush structure 2 is arranged in front of the tower base mounting area 1, and is used to form a first stiffness weakened area in front of the tower base mounting area 1; the rear crush structure 3 is arranged in the tower base mounting area 1, and is used to form a second stiffness weakened area in the tower base mounting area 1.
[0035] Among them, along the length direction of the front longitudinal beam 100, in each section structure obtained by cross-cutting the front longitudinal beam (i.e. cutting the front longitudinal beam 100 along the length direction perpendicular to the front longitudinal beam 100), the stiffness of the section where the front crush structure 2 is set (defined as the first section) is less than the stiffness of the remaining sections on both sides of the first section, and the first section is the first stiffness weakened zone. Moreover, along the length direction of the front longitudinal beam 100, the length of the first stiffness weakened zone is equal to the length of the front crush structure 2. When the front longitudinal beam 100 is applied to a vehicle, the length direction of the front longitudinal beam 100 is the length direction of the vehicle.
[0036] Similarly, along the length direction of the front longitudinal beam 100, among the various section structures obtained by cross-sectioning the front longitudinal beam 100, the section where the rear crush structure 3 is arranged (defined as the second section) has a stiffness smaller than the stiffness of the remaining sections on both sides of the second section, and the second section is the second stiffness weakened area. Moreover, along the length direction of the front longitudinal beam 100, the length of the second stiffness weakened area is equal to the length of the rear crush structure 3.
[0037] In addition, along the length direction of the front longitudinal beam 100, among the section structures obtained by cross-sectioning the front longitudinal beam 100, the section for installing the tower 200 (defined as the third section) is the tower installation area 1, wherein, when the vehicle is normally placed on the horizontal ground after assembly, in the orthographic projection of the horizontal plane, the length of the projection of the third section is equal to the length of the projection of the tower 200. The length of the projection of the third section and the tower 200 refers to the length of the projection of the two in the length direction of the front longitudinal beam 100.
[0038] In the prior art, a corresponding crush structure is usually provided on the front longitudinal beam 100, but in the prior art, the crush structure is usually arranged in front of the tower base mounting area 1. In a frontal collision, usually only the crush structure in front of the tower base mounting area 1 will crush and absorb energy.
[0039] In the present embodiment, in addition to providing a crush structure in front of the tower base mounting area 1 (i.e., the front crush structure 2), a crush structure (i.e., the rear crush structure 3) is also provided in the tower base mounting area 1. Thus, in a frontal collision, both the front of the tower base mounting area 1 and the tower base mounting area 1 can crush and absorb energy, thereby improving the frontal collision energy absorption effect of the front longitudinal beam 100 when the vehicle collides head-on.
[0040] In addition, in the prior art, the method of increasing the length of the front longitudinal beam 100 is also adopted to improve the front longitudinal beam 100's absorption effect on the frontal collision energy. However, due to factors such as the size and shape of the vehicle, the increase in the length of the front longitudinal beam 100 is limited, making it difficult for this method to meet the demand for the ability to absorb collision energy. Compared with this method, the arrangement of this embodiment can meet the requirements of the front longitudinal beam 100 for absorbing the frontal collision energy without increasing the length of the front longitudinal beam 100, which is conducive to the miniaturization design of the vehicle and helps to reduce the cost of the vehicle.
[0041] In addition, in the prior art, the strength of the front longitudinal beam 100 is increased to improve the ability of the front longitudinal beam 100 to resist frontal collision. However, this method requires increasing the strength of the passenger compartment of the automobile so that the passenger compartment has sufficient support for the front longitudinal beam 100. Otherwise, in a frontal collision, the root of the front longitudinal beam 100 may invade the passenger compartment and cause damage to the occupants. The simultaneous increase in the strength of the passenger compartment and the front longitudinal beam 100 will sharply increase the weight of the vehicle body and the cost of parts, and the cost-effectiveness is low. Compared with this method, this embodiment does not need to increase the strength of the front longitudinal beam 100 or the passenger compartment, which is conducive to lightweighting of the vehicle and reducing the cost of the vehicle.
[0042] In one embodiment, the rigidity of the first rigidity weakened area is less than that of the second rigidity weakened area. Thus, in a frontal collision, the first rigidity weakened area can collapse and absorb energy before the second rigidity weakened area, which is more conducive to protecting the personnel in the passenger compartment.
[0043] In one embodiment, the front longitudinal beam 100 is an aluminum alloy beam, which is more conducive to reducing the weight of the vehicle.
[0044] In one embodiment, along the length direction of the front longitudinal beam 100, the distance between the front crush structure 2 and the front end surface of the front longitudinal beam 100 is D1, wherein 5mm≤D1≤15mm, so that when the front longitudinal beam 100 is subjected to a frontal collision, the collision energy can be absorbed as far away from the passenger compartment as possible. Preferably, D1=10mm.
[0045] like Figure 1 and Figure 2 As shown, the front crumple structure 2 includes a first crumple groove 21 and a second crumple groove 22; along the width direction of the front longitudinal beam 100, the front longitudinal beam 100 has a first surface 101 and a second surface 102 arranged opposite to each other, wherein the first crumple groove 21 is arranged on the first surface 101, and the second crumple groove 22 is arranged on the second surface 102. Moreover, along the width direction of the front longitudinal beam 100, the first crumple groove 21 and the second crumple groove 22 at least partially overlap. When the front longitudinal beam 100 is applied to a vehicle, the width direction of the front longitudinal beam 100 is the width direction of the vehicle. When the front longitudinal beam 100 is subjected to a frontal collision, such a setting is more conducive to the front longitudinal beam 100 to generate crumple energy absorption at the front crumple structure 2.
[0046] “Along the width direction of the front longitudinal beam 100, the first crumple groove 21 and the second crumple groove 22 at least partially overlap” may mean: in the orthographic projection on the first plane, the projection of the first crumple groove 21 and the projection of the second crumple groove 22 at least partially overlap, wherein the first plane is perpendicular to the width direction of the front longitudinal beam 100.
[0047] Preferably, the first crush groove 21 and the second crush groove 22 are arranged mirror-symmetrically with respect to a plane, wherein the plane is parallel to the first plane. At this time, in the orthographic projection on the first plane, the projection of the first crush groove 21 and the projection of the second crush groove 22 are the same in shape and size, and the two completely overlap.
[0048] In one embodiment, a plurality of first crush grooves 21 are provided, and each first crush groove 21 is spaced apart along the length direction of the front longitudinal beam 100, and the spacing between adjacent first crush grooves 21 is D2, wherein 7mm≤D2≤17mm. Preferably, D2 is 12mm. "Multiple" means greater than or equal to two, and "multiple" has the same meaning in each embodiment, which will not be repeated in the following text. In addition, Figure 2 In the illustrated embodiment, the number of the first collapse grooves 21 is two.
[0049] There are multiple second collapse grooves 22, each of which is spaced apart along the length direction of the front longitudinal beam 100, and the spacing between adjacent second collapse grooves 22 is D3, wherein 7mm≤D3≤17mm. Preferably, D3 is 12mm. Figure 2 In the illustrated embodiment, the number of the second collapse grooves 22 is two.
[0050] When there are multiple first crush grooves 21 and second crush grooves 22, the numbers of the two are the same, and the first crush grooves 21 correspond to the second crush grooves 22 one by one. In the width direction of the front longitudinal beam 100, the corresponding first crush grooves 21 and second crush grooves 22 overlap at least partially. In the width direction of the front longitudinal beam 100, a first crush groove 21 and a second crush groove 22 that does not correspond thereto may be a region that does not overlap with each other.
[0051] In one embodiment, in the height direction of the front longitudinal beam 100, the first crush groove 21 may penetrate the front longitudinal beam 100, and similarly, in the height direction of the front longitudinal beam 100, the second crush groove 22 may penetrate the front longitudinal beam 100. When the front longitudinal beam 100 is applied to a vehicle, the height direction of the front longitudinal beam 100 is the height direction of the vehicle.
[0052] In one embodiment, when the front crush structure 2 includes the first crush groove 21 and the second crush groove 22, D1 refers to the minimum distance between the first crush groove 21 and the second crush groove 22 and the front end face of the front longitudinal beam 100 in the length direction of the front longitudinal beam 100. For example, in the length direction of the front longitudinal beam 100, when the first crush groove 21 is closer to the front end face of the front longitudinal beam 100 than the second crush groove 22, D1 refers to the distance between the first crush groove 21 and the front end face of the front longitudinal beam 100, and when the distances between each region of the first crush groove 21 and the front end face of the front longitudinal beam 100 are different along the height direction of the front longitudinal beam 100, D1 may refer to the minimum distance, the maximum distance or the average distance between each region of the first crush groove 21 and the front end face of the front longitudinal beam 100, wherein the average distance may be equal to half of the sum of the minimum distance and the maximum distance.
[0053] At this time, the length of the front crush structure 2 refers to: along the length direction of the front longitudinal beam 100, the length between the area of each first crush groove 21 and each second crush groove 22 closest to the front end surface of the front longitudinal beam 100 and the area farthest from the front end surface of the front longitudinal beam 100.
[0054] like Figure 1 and Figure 2 As shown, in one embodiment, the rear crush structure 3 includes a third crush groove 31 and a fourth crush groove 32, wherein the third crush groove 31 is arranged on the first surface 101, and the fourth crush groove 32 is arranged on the second surface 102; along the length direction of the front longitudinal beam 100, the length of the third crush groove 31 is greater than the length of the fourth crush groove 32; along the width direction of the front longitudinal beam 100, the third crush groove 31 and the fourth crush groove 32 at least partially overlap. Such an arrangement can provide a safety of instability and bending at this position while inducing the front longitudinal beam 100 to crush and deform, that is, even if the front longitudinal beam 100 cannot completely achieve axial (i.e., the length direction of the front longitudinal beam 100) crush energy absorption during a collision, it can be bent to one side at this point so that the root of the front longitudinal beam 100 will not invade the passenger compartment.
[0055] In addition, the first surface 101 is located outside the second surface 102 , that is, when the front longitudinal beam 100 is applied to the vehicle, the second surface 102 of one front longitudinal beam 100 is closer to the other front longitudinal beam 100 than the first surface 101 of the front longitudinal beam 100 .
[0056] In one embodiment, in the orthographic projection on the first plane, the projection of the fourth crush groove 32 is completely located within the projection of the third crush groove 31 .
[0057] In one embodiment, the shapes and sizes of the first collapse groove 21 and the second collapse groove 22 may be the same. Of course, in other embodiments, the shapes and sizes of the first collapse groove 21 and the second collapse groove 22 may be different.
[0058] like Figure 1 As shown, in one embodiment, a middle crush structure 4 is further provided on the front longitudinal beam 100, and the middle crush structure 4 is provided between the front crush structure 2 and the rear crush structure 3, and is used to form a third stiffness weakened zone between the front crush structure 2 and the rear crush structure 3. Among the various segment structures obtained by cross-sectioning the front longitudinal beam 100 along the length direction of the front longitudinal beam 100, the stiffness of the segment where the middle crush structure 4 is provided (defined as the fourth segment) is less than the stiffness of the remaining segments on both sides of the fourth segment, and the fourth segment is the third stiffness weakened zone. Moreover, the length of the third stiffness weakened zone along the length direction of the front longitudinal beam 100 is equal to the length of the middle crush structure 4.
[0059] When the front longitudinal beam 100 is subjected to a head-on collision, the third stiffness weakened area will also collapse and absorb energy, thereby further improving the energy absorption effect of the front longitudinal beam 100 .
[0060] Among them, along the length direction of the front longitudinal beam, the middle crush structure 4 and the front crush structure 2 are arranged at intervals, and the middle crush structure 4 and the rear crush structure 3 are arranged at intervals.
[0061] In addition, in one embodiment, the rigidity of the first rigidity weakened area is smaller than that of the third rigidity weakened area, and the rigidity of the third rigidity weakened area is smaller than that of the second rigidity weakened area. In this way, in a frontal collision, it is more conducive to the front longitudinal beam 100 to collapse and absorb energy from front to back.
[0062] In one embodiment, along the length direction of the front longitudinal beam 100, the distance between the middle crush structure 4 and the front crush structure 2 is D4, wherein 195 mm ≤ D4 ≤ 205 mm. Preferably, D4 is 200 mm.
[0063] like Figure 1 and Figure 2 As shown, in one embodiment, the middle crush structure 4 includes a fifth crush groove 41 and a sixth crush groove 42, the fifth crush groove 41 is arranged on the first surface 101, and the sixth crush groove 42 is arranged on the second surface 102; along the length direction of the front longitudinal beam 100, the fifth crush groove 41 and the sixth crush groove 42 are staggered, the fifth crush groove 41 is located in the tower base mounting area 1, the sixth crush groove 42 is located on the side of the fifth crush groove 41 away from the front crush structure 2, and the sixth crush groove 42 is located in front of the tower base mounting area 1.
[0064] Among them, "the fifth crush groove 41 and the sixth crush groove 42 are staggered" may mean that in the orthographic projection on the first plane, there is no overlapping area between the projection of the fifth crush groove 41 and the projection of the sixth crush groove 42. In addition, along the length direction of the front longitudinal beam, the fifth crush groove 41 is spaced apart from the third crush groove 31 and is located in front of the third crush groove 31; along the length direction of the front longitudinal beam, the sixth crush groove 42 is spaced apart from the fifth crush groove 41, the sixth crush groove 42 is spaced apart from the fourth crush groove 32, and the sixth crush groove 42 is located between the fourth crush groove 32 and the fifth crush groove 41.
[0065] As Figure 1 and Figure 2 shown, in an embodiment, the front longitudinal beam 100 includes an upper plate 51, a lower plate 52, an inner plate 53, an outer plate 54, and a reinforcing plate 55; the inner plate 53 and the outer plate 54 are spaced apart along the width direction of the front longitudinal beam 100, and the upper plate 51 and the lower plate 52 are spaced apart along the height direction of the front longitudinal beam 100; the upper plate 51, the outer plate 54, the lower plate 52, and the inner plate 53 are sequentially connected end to end to enclose a receiving cavity 56; the reinforcing plate 55 is disposed in the receiving cavity 56, one end of the reinforcing plate 55 is connected to the inner plate 53, and the other end of the reinforcing plate 55 is connected to the outer plate 54; the reinforcing plate 55 is spaced apart from the upper plate 51 and the reinforcing plate 55 is spaced apart from the lower plate 52. The cross-section of the front longitudinal beam 100 is in the shape of a "day", such a setting can not only ensure the strength of the front longitudinal beam 100, but also reduce the weight of the front longitudinal beam 100. Moreover, such a setting can not only ensure the stable crushing of the front longitudinal beam 100 along its length direction, but also avoid the situation that the strength of the front longitudinal beam 100 is too strong to be crushed smoothly.
[0066] In addition, in the whole vehicle, the inner plate 53 is located outside the outer plate 54, and the upper plate 51 is located above the lower plate 52. The first surface 101 is the surface of the outer plate 54 facing away from the inner plate 53, and the second surface 102 is the surface of the inner plate 53 facing away from the outer plate 54.
[0067] As Figure 1 and Figure 2 shown, when the cross-section of the front longitudinal beam 100 is set in the above-mentioned "day" shape, the first crush groove 21 is provided on the outer plate 54, and the second crush groove 22 is provided on the inner plate 53. Specifically, the first crush groove 21 is provided on the surface of the outer plate 54 facing away from the inner plate 53, and the second crush groove 22 is provided on the surface of the inner plate 53 facing away from the outer plate 54.
[0068] As Figure 2As shown, the first collapse groove 21 includes a first groove 211 and a second groove 212, both of which are arranged on the outer plate 54; the first groove 211 is located above the reinforcing plate 55, and extends to the surface of the upper plate 51 away from the lower plate 52 (i.e., extends to the upper surface of the upper plate 51); the second groove 212 is located below the reinforcing plate 55, and extends to the surface of the lower plate 52 away from the upper plate 51 (i.e., extends to the lower surface of the lower plate 52). Among them, due to the setting of the reinforcing plate 55, it is difficult to prepare grooves at the intersection of the inner plate 53 and the reinforcing plate 55 and at the intersection of the outer plate 54 and the reinforcing plate 55 in actual production. Therefore, in this application, the first collapse groove 21 is set to two sections (the two sections are the first groove 211 and the second groove 212) to facilitate production and preparation.
[0069] Along the direction from the upper plate 51 to the lower plate 52, the first groove 211 and the second groove 212 at least partially overlap. That is, in the orthographic projection on the second plane, the projection of the first groove 211 and the projection of the second groove 212 at least partially overlap, wherein the second plane is perpendicular to the first plane, and the second plane is perpendicular to the height direction of the front longitudinal beam.
[0070] Preferably, the first groove 211 and the second groove 212 are arranged in mirror symmetry with respect to a plane (defined as a third plane), wherein the third plane is parallel to the second plane.
[0071] Similarly, if Figure 1 As shown, the second collapse groove 22 includes a third groove 221 and a fourth groove 222, and the third groove 221 and the fourth groove 222 are both arranged on the inner plate 53; the third groove 221 is located above the reinforcing plate 55, and extends to the surface of the upper plate 51 away from the lower plate 52 (that is, extends to the upper surface of the upper plate 51); the fourth groove 222 is located below the reinforcing plate 55, and extends to the surface of the lower plate 52 away from the upper plate 51 (that is, extends to the lower surface of the lower plate 52);
[0072] Along the direction from the upper plate 51 to the lower plate 52, the third groove 221 and the fourth groove 222 at least partially overlap, that is, in the orthographic projection on the second plane, the projection of the third groove 221 and the projection of the fourth groove 222 at least partially overlap.
[0073] Preferably, the third groove 221 and the fourth groove 222 are arranged in mirror symmetry with respect to the third plane.
[0074] In one embodiment, the first groove 211 may be a strip-shaped structure, the dimension in the height direction of the front longitudinal beam 100 is greater than the dimension in the length direction of the front longitudinal beam 100, and the ratio of the two is 3:1. Additionally, the shapes and dimensions of the first groove 211, the second groove 212, the third groove 221, and the fourth groove 222 may all be the same.
[0075] As Figure 1 and Figure 2 shown, when the cross-section of the front longitudinal beam 100 is set in the above-mentioned "day" shape, the third collapse groove 31 is provided on the outer plate 54 and is located on the surface of the outer plate 54 facing away from the inner plate 53, and the fourth collapse groove 32 is provided on the inner plate 53 and is located on the surface of the inner plate 53 facing away from the outer plate 54.
[0076] As Figure 1 and Figure 2 shown, the third collapse groove 31 is located above the reinforcement plate 55 and extends to the surface of the upper plate 51 facing away from the lower plate 52; the fourth collapse groove 32 is located above the reinforcement plate 55 and extends to the surface of the upper plate 51 facing away from the lower plate 52.
[0077] As Figure 1 and Figure 2 shown, when the cross-section of the front longitudinal beam 100 is set in the above-mentioned "day" shape, the fifth collapse groove 41 is provided on the outer plate 54 and is located on the surface of the outer plate 54 facing away from the inner plate 53, and the sixth collapse groove 42 is provided on the inner plate 53 and is located on the surface of the inner plate 53 facing away from the outer plate 54.
[0078] As Figure 2 shown, the fifth collapse groove 41 includes a fifth groove 411 and a sixth groove 412, and both the fifth groove 411 and the sixth groove 412 are provided on the outer plate 54; the fifth groove 411 is located above the reinforcement plate 55 and extends to the surface of the upper plate 51 facing away from the lower plate 52 (i.e., extends to the upper surface of the upper plate 51); the sixth groove 412 is located below the reinforcement plate 55 and extends to the surface of the lower plate 52 facing away from the upper plate 51 (i.e., extends to the lower surface of the lower plate 52).
[0079] Along the direction from the upper plate 51 to the lower plate 52, at least a part of the fifth groove 411 and the sixth groove 412 overlap. That is, in the orthographic projection on the second plane, at least a part of the projection of the fifth groove 411 and the projection of the sixth groove 412 coincide.
[0080] Preferably, the fifth groove 411 and the sixth groove 412 are symmetrically arranged with respect to the third plane in a mirror image manner.
[0081] As Figure 1 As shown, the sixth collapse groove 42 is located above the reinforcing plate 55 and extends to the surface of the upper plate 51 facing away from the lower plate 52 , that is, the sixth collapse groove 42 extends to the upper surface of the upper plate 51 .
[0082] In one embodiment, the fifth groove 411 may be a long strip structure, and its dimension in the height direction of the front longitudinal beam 100 is greater than its dimension in the length direction of the front longitudinal beam 100, and the ratio of the two is 1.5: 1. In addition, the shape and size of the fifth groove 411 and the sixth groove 412 may be the same.
[0083] like Figure 3 As shown, in one embodiment, the front longitudinal beam 100 further includes a reinforcement member 6; the reinforcement member 6 is arranged in the tower base installation area 1, the reinforcement member 6 is located in the accommodating cavity 56, and is located between the reinforcement plate 55 and the lower plate 52; a notch 61 is arranged on the upper surface of the reinforcement member 6, the notch 61 is opposite to the second rigidity weakened area, and the notch 61 extends through the surface of the reinforcement member 6 close to the inner plate 53, and the notch 61 extends through the surface of the reinforcement member 6 close to the outer plate 54. This arrangement can not only strengthen the tower base installation area 1, but also avoid adverse effects on the collapse deformation of the second rigidity weakened area.
[0084] In addition, in the orthographic projection of the second plane, the projections of the third collapse groove 31 , the fourth collapse groove 32 , and the sixth collapse groove 42 are all located within the projection of the notch 61 .
[0085] like Figure 3 As shown, in one embodiment, along the length direction of the front longitudinal beam 100, the reinforcement 6 includes a first structure 62, a connecting plate 63 and a second structure 64 connected in sequence; the first structure 62 is provided with a first hole 621, and the first hole 621 penetrates the first structure 62 along the length direction of the front longitudinal beam 100; the second structure 64 is provided with a second hole 641, and the second hole 641 penetrates the second structure 64 along the length direction of the front longitudinal beam 100; the connecting plate 63 is provided with a third hole 631, and the third hole 631 penetrates the connecting plate 63 along the arrangement direction of the upper plate 51 and the lower plate 52. Among them, the connecting plate 63 and the lower plate 52 can be connected together by FDS. In addition, the notch 61 is located between the first structure 62 and the second structure 64, and is located above the connecting plate 63, that is, the first structure 62, the connecting plate 63 and the second structure 64 enclose to form the notch 61.
[0086] In one embodiment, the number of the third holes 631 may be plural. In addition, the third holes 631 may be square holes, the length direction of the square holes is parallel to the length direction of the front longitudinal beam 100 , and the width direction of the square holes is parallel to the width direction of the front longitudinal beam 100 .
[0087] It should be understood that in other embodiments, the above-related settings can also be replaced in other ways. For example, in other embodiments, the number of the first collapse groove 21 and the second collapse groove 22 can both be one. The reinforcing member 6 can also be arranged in other ways. For example, the reinforcing member 6 can only have the first structure 62 and the second structure 64.
[0088] An embodiment of the present utility model further provides a vehicle, which includes a tower base 200 and a front longitudinal beam 100. Among them, the front longitudinal beam 100 is the front longitudinal beam 100 described in any one of the above embodiments, and the tower base 200 is installed in the tower base installation area 1.
[0089] In one embodiment, the tower base 200 includes a top plate 71, a first side plate 72, a second side plate 73, and a third side plate 74. The upper ends of the first side plate 72, the second side plate 73, and the third side plate 74 are all connected to the top plate 71. After assembly, the top plate 71 is located above the front longitudinal beam 100, and the top plate 71 is used to connect the shock absorber. The lower ends of the first side plate 72, the second side plate 73, and the third side plate 74 are all connected to the front longitudinal beam 100. The second side plate 73 and the third side plate 74 are both located outside the first side plate 72. The second side plate 73 and the third side plate 74 are arranged at intervals along the length direction of the front longitudinal beam 100. Along the length direction of the front longitudinal beam 100, the rear collapse structure 3 is located between the second side plate 73 and the third side plate 74. Among them, the first side plate 72, the second side plate 73, and the third side plate 74 can all be connected to the front longitudinal beam 100 through FDS.
[0090] When the cross-section of the front longitudinal beam 100 is set in the above-mentioned "day" shape, the first side plate 72 is connected to the surface of the upper plate 51 facing away from the lower plate 52, and the second side plate 73 and the third side plate 74 are both connected to the surface of the outer plate 54 facing away from the inner plate 53, and the second side plate 73 and the third side plate 74 are both located above the reinforcing plate 55. Along the length direction of the front longitudinal beam 100, the second side plate 73 is located on the side of the rear collapse structure 3 facing away from the third side plate 74. In the direction from the inner plate 53 to the outer plate 54, at least a part of the sixth collapse groove 42 overlaps with the second side plate 73.
[0091] In one embodiment, a window 721 is provided on the first side plate 72. The window 721 penetrates to the lower end surface of the first side plate 72, and along the direction from the first side plate 72 to the second side plate 73, the window 721 penetrates the first side plate 72. At least a part of the second stiffness weakening area is opposite to the window 721.
[0092] Among them, "at least a part of the second stiffness weakening area is opposite to the window 721" can mean that in the front projection on the second plane, at least a part of the projection of the second stiffness weakening area overlaps with the projection of the window 721.
[0093] In one embodiment, the maximum dimension of the window 721 in the height direction of the front longitudinal beam 100 is greater than the maximum dimension of the window 721 in the length direction of the front longitudinal beam 100 , wherein the ratio of the two may be 2:1.
[0094] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A front longitudinal beam, characterized in that: The front longitudinal beam is provided with a tower mounting area, a front crush structure and a rear crush structure; The tower base installation area is used to install the tower base; The front collapse structure is arranged in front of the tower base installation area, and is used to form a first rigidity weakened area in front of the tower base installation area; The rear collapse structure is arranged in the tower base installation area, and is used to form a second rigidity weakened area in the tower base installation area.
2. The front longitudinal beam according to claim 1, characterized in that: The front collapse structure includes a first collapse groove and a second collapse groove; Along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface that are arranged opposite to each other, wherein the first crush groove is arranged on the first surface, and the second crush groove is arranged on the second surface; Along the width direction of the front longitudinal beam, at least a portion of the first crush groove and the second crush groove overlap.
3. The front longitudinal beam according to claim 2, characterized in that: There are a plurality of the first crush grooves and the second crush grooves, each of which is arranged at intervals along the length direction of the front longitudinal beam, and each of the second crush grooves is arranged at intervals along the length direction of the front longitudinal beam; The first crush grooves correspond to the second crush grooves one by one, and in the width direction of the front longitudinal beam, the corresponding first crush grooves and the second crush grooves at least partially overlap.
4. The front longitudinal beam according to claim 1, characterized in that: The rear collapse structure includes a third collapse groove and a fourth collapse groove; Along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface that are arranged opposite to each other, wherein the third crush groove is arranged on the first surface, and the fourth crush groove is arranged on the second surface; Along the width direction of the front longitudinal beam, the third crush groove and the fourth crush groove at least partially overlap; The first surface is located on the outer side of the second surface, and along the length direction of the front longitudinal beam, the length of the third crush groove is greater than the length of the fourth crush groove.
5. The front longitudinal beam according to claim 1, characterized in that: The front longitudinal beam is also provided with a middle crush structure, which is arranged between the front crush structure and the rear crush structure, and is used to form a third rigidity weakened zone between the front crush structure and the rear crush structure; The middle collapse structure includes a fifth collapse groove and a sixth collapse groove; Along the width direction of the front longitudinal beam, the front longitudinal beam has a first surface and a second surface that are arranged opposite to each other, the fifth crush groove is arranged on the first surface, and the sixth crush groove is arranged on the second surface; Along the length direction of the front longitudinal beam, the fifth crush groove and the sixth crush groove are staggered, the fifth crush groove is located in the tower base mounting area, the sixth crush groove is located on the side of the fifth crush groove away from the front crush structure, and the sixth crush groove is located in front of the tower base mounting area.
6. The front longitudinal beam according to any one of claims 1 to 5, characterized in that: The front longitudinal beam comprises an upper plate, a lower plate, an inner plate, an outer plate and a reinforcing plate; The inner plate and the outer plate are arranged at intervals along the width direction of the front longitudinal beam, and the upper plate and the lower plate are arranged at intervals along the height direction of the front longitudinal beam; The upper plate, the outer plate, the lower plate and the inner plate are connected end to end in sequence to enclose and form a receiving cavity; The reinforcing plate is arranged in the accommodating cavity, one end of the reinforcing plate is connected to the inner plate, and the other end of the reinforcing plate is connected to the outer plate; The reinforcing plate is spaced apart from the upper plate, and the reinforcing plate is spaced apart from the lower plate.
7. The front longitudinal beam according to claim 6, characterized in that: The front collapse structure includes a first collapse groove and a second collapse groove; The first collapse groove is arranged on the surface of the outer plate facing away from the inner plate, and the second collapse groove is arranged on the surface of the inner plate facing away from the outer plate; Along the direction from the inner plate to the outer plate, the first collapse groove and the second collapse groove at least partially overlap; The first collapse groove includes a first groove and a second groove, and the first groove and the second groove are both arranged on the outer plate; the first groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; the second groove is located below the reinforcing plate and extends to the surface of the lower plate away from the upper plate; The second collapse groove includes a third groove and a fourth groove, and the third groove and the fourth groove are both arranged on the inner plate; the third groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; the fourth groove is located below the reinforcing plate and extends to the surface of the lower plate away from the upper plate; Along the direction from the upper plate to the lower plate, at least a portion of the first groove and the second groove overlap, and at least a portion of the third groove and the fourth groove overlap.
8. The front longitudinal beam according to claim 6, characterized in that: The rear crush structure comprises a third crush groove and a fourth crush groove, wherein the third crush groove is arranged on the surface of the outer plate facing away from the inner plate, and the fourth crush groove is arranged on the surface of the inner plate facing away from the outer plate; Along the length direction of the front longitudinal beam, the length of the third crush groove is greater than the length of the fourth crush groove; Along the direction from the inner plate to the outer plate, the third collapse groove and the fourth collapse groove at least partially overlap; The third collapse groove is located above the reinforcing plate and extends to the surface of the upper plate away from the lower plate; The fourth collapse groove is located above the reinforcing plate and extends to a surface of the upper plate facing away from the lower plate.
9. The front longitudinal beam according to claim 6, characterized in that: The front longitudinal beam is also provided with a middle crush structure, which is arranged between the front crush structure and the rear crush structure, and is used to form a third rigidity weakened zone between the front crush structure and the rear crush structure; The middle collapse structure comprises a fifth collapse groove and a sixth collapse groove, wherein the fifth collapse groove is arranged on the outer plate, and the sixth collapse groove is arranged on the inner plate; Along the length direction of the front longitudinal beam, the fifth crush groove and the sixth crush groove are staggered, the fifth crush groove is located in the tower seat mounting area, and the fifth crush groove is located on a side of the sixth crush groove away from the front crush structure; The fifth collapse groove includes a fifth groove and a sixth groove, wherein the fifth groove is located above the reinforcing plate and extends to a surface of the upper plate away from the lower plate; The sixth groove is located below the reinforcing plate and extends to the surface of the lower plate facing away from the upper plate; Along the direction from the upper plate to the lower plate, at least a portion of the fifth groove and the sixth groove overlap; The sixth collapse groove is located above the reinforcing plate and extends to a surface of the upper plate facing away from the lower plate.
10. The front longitudinal beam according to claim 6, characterized in that: The front longitudinal beam also includes a reinforcement member; The reinforcement member is arranged in the tower base installation area, and the reinforcement member is located in the accommodating cavity and between the reinforcement plate and the lower plate; A notch is provided on the upper surface of the reinforcement, the notch is opposite to the second stiffness weakened area, and the notch extends through to the surface of the reinforcement close to the inner plate, and the notch extends through to the surface of the reinforcement close to the outer plate.
11. The front longitudinal beam according to claim 10, characterized in that: Along the length direction of the front longitudinal beam, the reinforcement comprises a first structure, a connecting plate and a second structure connected in sequence; The first structure is provided with a first hole, and the first hole penetrates the first structure along the length direction of the front longitudinal beam; The second structure is provided with a second hole, and the second hole penetrates the second structure along the length direction of the front longitudinal beam; The connecting plate is provided with a third hole, and the third hole penetrates the connecting plate along the arrangement direction of the upper plate and the lower plate.
12. A vehicle, characterized in that: It comprises a tower base and the front longitudinal beam according to any one of claims 1 to 11, wherein the tower base is installed in the tower base installation area; the tower base comprises a top plate, a first side plate, a second side plate and a third side plate; The upper ends of the first side plate, the second side plate and the third side plate are all connected to the top plate; The lower ends of the first side panel, the second side panel and the third side panel are all connected to the front longitudinal beam; The second side panel and the third side panel are both located on the outer side of the first side panel; The second side plate and the third side plate are arranged at intervals along the length direction of the front longitudinal beam; Along the length direction of the front longitudinal beam, the rear crush structure is located between the second side panel and the third side panel.
13. The vehicle according to claim 12, characterized in that A window is provided on the first side panel, and the window penetrates to the lower end surface of the first side panel and penetrates the first side panel along the width direction of the front longitudinal beam; the second stiffness reduction area is opposite to the window.