Front longitudinal beam structure and vehicle

Abstract

The utility model relates to the technical field of vehicles, and provides a front longitudinal beam structure and a vehicle. The front longitudinal beam structure comprises a front longitudinal beam body, the front longitudinal beam body comprises an inner plate and an outer plate which are connected, the inner plate and the outer plate are oppositely arranged, and a collapsing cavity is formed between the inner plate and the outer plate; the ratio of the size of the crumple cavity in the height direction of the vehicle body to the size of the crumple cavity in the width direction of the vehicle body ranges from 2.6 to 2.9. According to the front longitudinal beam structure, the size of the crumple cavity in the width direction of the automobile body can be set according to the arrangement space of a front cabin of an actual extended-range automobile, meanwhile, the size of the crumple cavity in the height direction of the automobile body is increased, the space utilization rate of the front cabin can be increased, it can be guaranteed that the crumple cavity has high energy absorption crumple capacity, and the service life of the crumple cavity is prolonged. Therefore, the vehicle body can meet the collision requirement, and the safety of passengers is ensured.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicles, and particularly to a front longitudinal beam structure and a vehicle. Background Art

[0002] In a pure electric vehicle, components such as a drive motor and high-voltage power distribution are generally arranged in the front engine compartment. The collision collapse space in the front engine compartment of the vehicle is relatively large, and the structural strength requirements for the left and right front longitudinal beams are relatively small. The left and right front longitudinal beam structures are relatively simple, the cavity size formed by the inner panel and the outer panel is relatively small, and the collision safety force transmission path is single.

[0003] However, for a range-extended vehicle, components such as an engine and a transmission are arranged in the front engine compartment. These components are relatively large in size and occupy a relatively large amount of space in the front engine compartment. The layout space in the front engine compartment is limited, and it cannot meet the installation requirements of the powertrain and the front longitudinal beams. The collapse and energy absorption space in the front engine compartment under collision conditions will also become smaller, and the simple left and right front longitudinal beams cannot meet the collision requirements. Utility Model Content

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a front longitudinal beam structure and a vehicle.

[0005] A first aspect of the present disclosure provides a front longitudinal beam structure, including a front longitudinal beam main body, and the front longitudinal beam main body includes an inner panel and an outer panel connected to each other;

[0006] The inner panel and the outer panel are arranged opposite to each other, and a collapse cavity is formed between the inner panel and the outer panel. The ratio of the dimension of the collapse cavity in the vehicle body height direction to the dimension of the collapse cavity in the vehicle body width direction is between 2.6 and 2.9.

[0007] Optionally, the collapse cavity includes a main section and a plurality of branch sections arranged at the rear end of the main section, and the plurality of branch sections are all communicated with the main section.

[0008] Optionally, in the direction from the front end to the rear end of the vehicle body, at least one of the plurality of branch sections is gradually inclined upward, and at least another one of the plurality of branch sections is gradually inclined downward.

[0009] Optionally, the inner panel arches away from the outer panel to form a first rib, and the outer panel arches away from the inner panel to form a second rib. The first rib and the second rib are arranged opposite to each other to jointly form the collapse cavity.

[0010] Optionally, the front end of the first rib and the front end of the second rib are arranged opposite to each other to jointly form the main section;

[0011] The middle part of the rear end of the first rib in the vertical direction is recessed towards the outer panel to form a first concave rib, so that two first sub - ribs distributed in the vertical direction are formed at the rear end of the first rib;

[0012] The middle part of the rear end of the second rib in the vertical direction is recessed towards the inner panel to form a second concave rib, so that two second sub - ribs distributed in the vertical direction are formed at the rear end of the second rib;

[0013] The two first sub - ribs and the two second sub - ribs are arranged in one - to - one correspondence to jointly form two branch segments distributed in the vertical direction. In the direction from the front end to the rear end of the vehicle body, one of the two branch segments is gradually inclined upward, and the other is gradually inclined downward, and the included angle between the two branch segments is between 40 degrees and 50 degrees.

[0014] Optionally, an installation space is formed on the side of the first concave rib away from the outer panel;

[0015] And / or, a weight - reducing hole is formed on the first concave rib.

[0016] Optionally, the inner panel and the outer panel are bent correspondingly at multiple positions to form multiple bending segments on the front longitudinal beam main body.

[0017] Optionally, the multiple bending segments are arranged at intervals along the extending direction of the front longitudinal beam main body, and adjacent bending segments are bent in opposite directions;

[0018] The included angle between two adjacent bending segments close to the rear end of the vehicle body among the multiple bending segments is between 125 degrees and 131 degrees.

[0019] Optionally, an installation notch is formed on the inner panel, and a suspension mounting bracket is arranged at the installation notch;

[0020] Or, suspension fixing points are arranged on the inner panel.

[0021] The second aspect of the present disclosure provides a vehicle, including a vehicle body and a front longitudinal beam structure as described in any one of the above, and the front longitudinal beam structures are symmetrically arranged at both ends of the front side of the vehicle body.

[0022] The technical solutions provided by the embodiments of the present disclosure have the following advantages compared with the prior art:

[0023] The front longitudinal beam structure and vehicle provided by the present disclosure include a front longitudinal beam main body, the front longitudinal beam main body includes an inner plate and an outer plate connected to each other, the inner plate and the outer plate are arranged opposite to each other, and a crush cavity is formed between the inner plate and the outer plate. The ratio of the dimension of the crush cavity in the vehicle body height direction to the dimension of the crush cavity in the vehicle body width direction is between 2.6 and 2.9. That is to say, the dimension of the crush cavity in the vehicle body width direction can be set according to the front engine compartment layout space of the actual range extender vehicle, which can avoid occupying too much space in the horizontal plane. When the dimension of the crush cavity in the vehicle body height direction is 2.6 to 2.9 times the dimension of the crush cavity in the vehicle body width direction, while improving the space utilization rate of the front engine compartment, it can ensure that the crush cavity has a high energy absorption and crushing capacity, so that the vehicle body can meet the collision requirements and ensure the safety of the occupants. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated into the specification and form a part of the specification, showing embodiments consistent with the present disclosure and, together with the specification, are used to explain the principles of the present disclosure.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of the front longitudinal beam structure according to an embodiment of the present utility model;

[0027] Figure 2 is Figure 1 a cross-sectional view taken along line A-A in

[0028] Figure 3 It is an exploded view of the front longitudinal beam structure according to an embodiment of the present utility model;

[0029] Figure 4 It is a schematic structural diagram of the inner plate according to an embodiment of the present utility model;

[0030] Figure 5 It is an installation schematic diagram of the inner plate according to an embodiment of the present utility model;

[0031] Figure 6 It is a schematic structural diagram of the inner plate according to another embodiment of the present utility model;

[0032] Figure 7 It is a schematic structural diagram of the bending section according to an embodiment of the present utility model;

[0033] Figure 8 It is a schematic diagram of the distribution of the front longitudinal beam structure according to an embodiment of the present utility model on the vehicle body.

[0034] In the figure: 1, inner panel; 11, first rib; 111, first sub-rib; 12, first concave rib; 121, weight reduction hole; 13, installation space; 14, installation notch; 15, suspension fixing point; 2, outer panel; 21, second rib; 211, second sub-rib; 22, second concave rib; 3, collapsible cavity; 31, main section; 32, branch section; 4, bending section; 5, reinforcing rib; 6, footrest. Specific embodiments

[0035] In order to more clearly understand the above-mentioned objects, features and advantages of the present disclosure, the solutions of the present disclosure will be further described below. It should be noted that, without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other.

[0036] Many specific details are set forth in the following description in order to fully understand the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only a part of the embodiments of the present disclosure, rather than all of the embodiments.

[0037] The front longitudinal beam structure and the vehicle will be described in detail below through specific embodiments:

[0038] Referring to Figures 1 to 8 As shown, a front longitudinal beam structure provided by some embodiments of the present invention includes a front longitudinal beam main body, the front longitudinal beam main body includes an inner panel 1 and an outer panel 2 connected to each other, the inner panel 1 and the outer panel 2 are arranged opposite to each other, and a collapsible cavity 3 is formed between the inner panel 1 and the outer panel 2, and the ratio of the dimension of the collapsible cavity 3 in the vehicle body height direction to the dimension of the collapsible cavity 3 in the vehicle body width direction is between 2.6 and 2.9.

[0039] That is to say, the dimension of the collapsible cavity 3 in the vehicle body width direction can be set according to the front engine compartment layout space of the actual range-extended electric vehicle, which can avoid occupying too much space in the horizontal plane. When the dimension of the collapsible cavity 3 in the vehicle body height direction is 2.6 to 2.9 times the dimension of the collapsible cavity 3 in the vehicle body width direction, while improving the utilization rate of the front engine compartment space, it can ensure that the collapsible cavity 3 has a high energy absorption and collapse ability, so that the vehicle body can meet the collision requirements and ensure the safety of the occupants.

[0040] Referring to Figure 2 As shown, the dimension of the collapsible cavity 3 in the vehicle body height direction is a, the dimension of the collapsible cavity 3 in the vehicle body width direction is b, and the ratio of a / b is between 2.6 and 2.9.

[0041] In some embodiments, referring to Figure 1As shown, the collapsible cavity 3 includes a main section 31 and a plurality of branch sections 32 provided at the rear end of the main section 31, and the plurality of branch sections 32 are all communicated with the main section 31.

[0042] It can be understood that a plurality of branch sections 32 are connected to the end of the main section 31, that is, the collapsible cavity 3 is formed into a bifurcated structure. The plurality of branch sections 32 can disperse the collision energy, so that the collision energy from the main section 31 can be evenly transmitted to the inner panel 1 of the A-pillar, thereby avoiding the situation that the inner panel 1 of the A-pillar is deformed too much due to concentrated force, and avoiding the problems of solder joint failure and increased occupant injury. It has a better force transmission effect and can improve the overall structural strength of the front longitudinal beam body.

[0043] Referring to Figure 4 and Figure 5 As shown, in the direction from the front end to the rear end of the vehicle body, at least one of the plurality of branch sections 32 is gradually inclined upward to avoid the foot space and improve the comfort of the feet when the occupants are sitting, and at least another of the plurality of branch sections 32 is gradually inclined downward. That is to say, the footrest 6 is arranged between the two branch sections 32 and is arranged corresponding to the position of the first concave rib 12. An installation space 13 is formed on the side of the first concave rib 12 away from the outer panel 2 to provide an avoidance space for the footrest 6 to improve the riding comfort.

[0044] Specifically, referring to Figure 3 、 Figure 4 and Figure 6 As shown, the inner panel 1 arches away from the outer panel 2 to form a first convex rib 11 to form a cavity structure between the first convex rib 11 and the outer panel 2. The outer panel 2 arches away from the inner panel 1 to form a second convex rib 21 to form a cavity structure between the second convex rib 21 and the inner panel 1. The first convex rib 11 and the second convex rib 21 are arranged opposite to each other to jointly form the collapsible cavity 3, so that the front longitudinal beam body can absorb collision energy.

[0045] It should be noted that convex rib structures are formed on both the inner panel 1 and the outer panel 2, so that a larger collapsible cavity 3 can be formed between the inner panel 1 and the outer panel 2. Specifically, the width of the collapsible cavity 3 can be appropriately thinned and the height can be appropriately increased. Specifically, it can be arranged according to the actual space in the front engine compartment. As long as the ratio of the dimension of the collapsible cavity 3 in the vehicle body height direction to the dimension of the collapsible cavity 3 in the vehicle body width direction is between 2.6 and 2.9, so that while ensuring the vehicle structure strength and meeting the collision requirements, a larger space can be left in the front engine compartment to arrange other components.

[0046] Specifically, the edges of the inner panel 1 and the outer panel 2 are formed into welding edges, and the inner panel 1 and the outer panel 2 are connected by welding, thereby forming a sealed collapsible cavity 3 between the inner panel 1 and the outer panel 2 to ensure that the collapsible cavity 3 can deform to absorb collision energy and improve the structural strength of the front longitudinal beam body.

[0047] In some embodiments, the front ends of the first rib 11 and the second rib 21 are oppositely arranged to jointly form a main section 31. A plurality of branch sections 32 are connected to the rear end of the main section 31 to disperse the collision energy, thereby changing the force transmission path of the collision energy to effectively ensure the safety of the occupants. Specifically, an energy absorption box installation area is formed at the end of the main section 31 away from the branch sections 32. The energy absorption box is connected to the energy absorption box installation area through fasteners such as screws.

[0048] Further, the middle part of the rear end of the first rib 11 in the vertical direction is recessed in the direction towards the outer panel 2 to form a first concave rib 12, so that two first sub-ribs 111 distributed in the vertical direction are formed at the rear end of the first rib 11, that is, the two first sub-ribs 111 are separated by the first concave rib 12, so that the collision energy from the main section 31 can be dispersed into the two first sub-ribs 111, and the longitudinal force transmission ability can also be enhanced.

[0049] The middle part of the rear end of the second rib 21 in the vertical direction is recessed in the direction towards the inner panel 1 to form a second concave rib 22, so that two second sub-ribs 211 distributed in the vertical direction are formed at the rear end of the second rib 21, that is, the two second sub-ribs 211 are separated by the second concave rib 22, so that the collision energy from the main section 31 can be dispersed into the two second sub-ribs 211, and the longitudinal force transmission ability can also be enhanced.

[0050] Refer to Figure 3 As shown, the two first sub-ribs 111 and the two second sub-ribs 211 are arranged in one-to-one correspondence to jointly form two branch sections 32 distributed in the vertical direction, and the first concave rib 12 and the second concave rib 22 are arranged between the two branch sections 32 to separate the two branch sections 32, thereby dispersing the collision energy.

[0051] In the direction from the front end to the rear end of the vehicle body, one of the two branch sections 32 is gradually inclined upward, and the other is gradually inclined downward, and the included angle between the two branch sections 32 is between 40 degrees and 50 degrees. Refer to Figure 6 As shown, the included angle between the two branch sections 32 is α, and the included angle α is between 40 degrees and 50 degrees, which can disperse the collision energy, change the force transmission path, enhance the longitudinal force transmission ability, and ensure the structural strength of the front longitudinal beam structure.

[0052] Of course, it should be noted that the number of the first concave ribs 12 can be single or multiple, and the number of the second concave ribs 22 can be single or multiple. The present disclosure does not limit this, as long as the first concave ribs 12 and the second concave ribs 22 can be arranged in one-to-one correspondence to form two or more branch sections 32 at the end of the front longitudinal beam main body.

[0053] Further, the branch segments 32 can also be implemented in other ways, which are not limited in this disclosure. As long as a plurality of branch segments 32 can be formed at the end of the front longitudinal beam main body to disperse the collision energy, it can be specifically set according to the actual situation.

[0054] Continuing to refer to Figure 3 As shown, an installation space 13 is formed on the side of the first concave rib 12 away from the outer panel 2. That is to say, the surface of the first concave rib 12 is recessed toward the outer panel 2 compared with the surface of the first convex rib 11, and then an installation space 13 is formed on the side of the first concave rib 12 away from the outer panel 2, which can be used for fixing the docking plug of the instrument wire harness and the floor wire harness. With this setting, the foot space will not be encroached, and the riding experience of the occupants will be improved.

[0055] Referring to Figure 3 As shown, a weight reduction hole 121 is provided on the first concave rib 12 to reduce the weight of the whole vehicle.

[0056] In some embodiments, referring to Figure 4 As shown, an installation cutout 14 is provided on the inner panel 1, and a suspension mounting bracket is arranged at the installation cutout 14, so that the suspension can utilize part of the space occupied by the inner panel 1, and thus the space of the front engine compartment can be fully utilized. Specifically, the installation cutout 14 is a notch structure formed by cutting off part of the material at an appropriate position on the inner panel 1 to improve the space utilization rate of the front engine compartment.

[0057] In some other embodiments, referring to Figure 6 As shown, a suspension fixing point 15 is provided on the inner panel 1 to fix the suspension on the inner panel 1.

[0058] It can be understood that, referring to Figure 8 As shown, the structure of the inner panel 1 of the front engine compartment can be selected according to actual needs. The suspension fixing point 15 can be directly provided on the inner panel 1 to ensure the structural strength of the front longitudinal beam main body, or the installation cutout 14 can be provided on the inner panel 1 to adapt to the installation space 13 of the front engine compartment and improve the space utilization rate.

[0059] Specifically, reinforcing ribs 5 are provided on both the inner panel 1 and the outer panel 2 to enhance the structural strength of the front longitudinal beam main body.

[0060] In some embodiments, the inner panel 1 and the outer panel 2 are bent correspondingly at multiple positions to form a plurality of bending segments 4 on the front longitudinal beam main body. Under the condition of a frontal collision of the vehicle, the plurality of bending segments 4 can be bent in sequence to further absorb the collision energy, reduce the intrusion amount of the front bulkhead, and achieve the effect of protecting the occupants. The front longitudinal beam structure of the present disclosure can also have a high efficiency of absorbing collision energy under the condition of limited space in the front engine compartment of the range-extended vehicle, has high structural strength, and can effectively ensure the safety of the occupants.

[0061] Referring to Figure 7As shown, a plurality of bending segments 4 are arranged at intervals along the extending direction of the front longitudinal beam main body, and adjacent bending segments 4 are bent in opposite directions, which conforms to the collapse deformation trend of the front longitudinal beam main body. Under the condition of a vehicle frontal collision, the plurality of bending segments 4 can be bent sequentially to absorb most of the collision energy and achieve the effect of protecting the occupants.

[0062] The included angle between two adjacent bending segments 4 close to the rear end of the vehicle body among the plurality of bending segments 4 is between 125 degrees and 131 degrees. Continuing to refer to Figure 7 As shown, the front longitudinal beam main body of the present disclosure has three bending points to form a first bending segment, a second bending segment, a third bending segment, and a fourth bending segment arranged in sequence in the direction from the front end to the rear end of the vehicle body. The included angle between the third bending segment and the fourth bending segment is β, and the included angle β is between 125 degrees and 131 degrees. The fourth bending segment is bent towards the outside of the vehicle body relative to the third bending segment. Thus, the collision energy from the main body segment 31 can be evenly transmitted to the inner panel 1 of the A-pillar, reducing the intrusion amount of the front bulkhead.

[0063] Furthermore, Figure 7 the length of L1 in is between 200 mm and 220 mm, the length of L2 is between 570 mm and 590 mm, and the length of L3 is between 840 mm and 860 mm. It can be specifically set according to actual needs, as long as it is within the above length range and can ensure the structural strength of the front longitudinal beam main body.

[0064] Some other embodiments of the present disclosure provide a vehicle, including the front longitudinal beam structure of any of the above embodiments. The front longitudinal beam structures are symmetrically arranged at both ends of the front side of the vehicle body to enhance the structural strength of the front engine compartment of the vehicle.

[0065] The vehicle provided by the embodiments of the present disclosure includes the front longitudinal beam structure of any of the above embodiments, so it has the beneficial effects of the front longitudinal beam structure of any of the above embodiments, which will not be elaborated here.

[0066] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0067] The above are only specific embodiments of the present disclosure, enabling those skilled in the art to understand or implement the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A front longitudinal beam structure, characterized in that: It comprises a front longitudinal beam body, wherein the front longitudinal beam body comprises an inner plate (1) and an outer plate (2) connected to each other; The inner panel (1) and the outer panel (2) are arranged opposite to each other, and a collapse cavity (3) is formed between the inner panel (1) and the outer panel (2), and the ratio of the dimension of the collapse cavity (3) along the vehicle body height direction to the dimension of the collapse cavity (3) along the vehicle body width direction is between 2.6 and 2.

9.

2. The front longitudinal beam structure according to claim 1, characterized in that: The collapse cavity (3) comprises a main body section (31) and a plurality of branch sections (32) arranged at the rear end of the main body section (31), and the plurality of branch sections (32) are all connected to the main body section (31).

3. The front longitudinal beam structure according to claim 2, characterized in that: In the direction from the front end to the rear end of the vehicle body, at least one of the plurality of branch segments (32) is gradually inclined upward, and at least another of the plurality of branch segments (32) is gradually inclined downward.

4. The front longitudinal beam structure according to claim 3, characterized in that: The inner plate (1) is arched in a direction away from the outer plate (2) to form a first convex rib (11), and the outer plate (2) is arched in a direction away from the inner plate (1) to form a second convex rib (21), and the first convex rib (11) and the second convex rib (21) are arranged opposite to each other to jointly form the collapsed cavity (3).

5. The front longitudinal beam structure according to claim 4, characterized in that: The front end of the first convex rib (11) and the front end of the second convex rib (21) are arranged opposite to each other to form the main body section (31); The middle portion of the rear end of the first convex rib (11) in the vertical direction is recessed in a direction toward the outer plate (2) to form a first concave rib (12), so that the rear end of the first convex rib (11) forms two first sub-convex ribs (111) distributed in the vertical direction; The middle portion of the rear end of the second convex rib (21) along the vertical direction is recessed in a direction toward the inner plate (1) to form a second concave rib (22), so that the rear end of the second convex rib (21) forms two second sub-convex ribs (211) distributed along the vertical direction; The two first sub-convex ribs (111) and the two second sub-convex ribs (211) are arranged in one-to-one correspondence to jointly form two branch segments (32) distributed along the vertical direction; in the direction from the front end to the rear end of the vehicle body, one of the two branch segments (32) is arranged to be gradually inclined upward, and the other is arranged to be gradually inclined downward, and the angle between the two branch segments (32) is between 40 degrees and 50 degrees.

6. The front longitudinal beam structure according to claim 5, characterized in that: A mounting space (13) is formed on a side of the first concave rib (12) away from the outer plate (2); And / or, a weight-reducing hole (121) is provided on the first concave rib (12).

7. The front longitudinal beam structure according to any one of claims 1 to 6, characterized in that: The inner plate (1) and the outer plate (2) are correspondingly bent at multiple positions to form multiple bent sections (4) on the front longitudinal beam body.

8. The front longitudinal beam structure according to claim 7, characterized in that: A plurality of the bent sections (4) are arranged at intervals along the extension direction of the front longitudinal beam body, and adjacent bent sections (4) are bent in opposite directions; The angle between two adjacent bending sections (4) close to the rear end of the vehicle body among the plurality of bending sections (4) is between 125 degrees and 131 degrees.

9. The front longitudinal beam structure according to any one of claims 1 to 6, characterized in that: The inner plate (1) is provided with a mounting cutout (14), and a suspension mounting bracket is provided at the mounting cutout (14); Alternatively, a suspension fixing point (15) is provided on the inner plate (1).

10. A vehicle, characterized in that: The invention comprises a vehicle body and a front longitudinal beam structure as claimed in any one of claims 1 to 9, wherein the front longitudinal beam structure is symmetrically arranged at both ends of the front side of the vehicle body.

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