Rear of the vehicle body and the vehicle

Abstract

The present invention discloses a rear vehicle body and a vehicle. The rear vehicle body includes: a rear anti-collision beam, the ends of which are connected to the rear longitudinal beams of the vehicle body; and a rear cross beam, which is formed by extrusion of a profile, the ends of which are fixed relative to the rear longitudinal beams of the vehicle body. The rear cross beam is located above and spaced apart from the rear anti-collision beam, and is located behind the rear cross beam along the front-to-back direction of the vehicle body. The rear vehicle body of the present invention improves the structural strength of the rear vehicle body by providing a rear anti-collision beam and a rear cross beam connected to the rear longitudinal beams of the vehicle body. Furthermore, two force transmission paths are formed after a rear-end collision of the vehicle body, thereby improving the rear-end collision performance of the vehicle body and facilitating the force transmission performance of the vehicle body in the X direction, thereby protecting the rear trunk and the hydrogen tank mounting points from deformation.

Description

Technical Field

[0001] The present invention relates to the field of vehicle manufacturing technology, and in particular to a vehicle body rear portion and a vehicle having the vehicle body rear portion. Background Art

[0002] In the existing technology, the rear anti-collision beam at the rear of the car plays the role of protecting the car's trunk space in the event of a rear-end collision. When the collision force at the rear of the car is large, the rear anti-collision beam deforms and the collision force continues to be transmitted into the car, affecting the trunk space and the stability of the rear hydrogen tank installation position. There is room for improvement. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a rear vehicle body that improves rear-end collision performance, facilitates the transmission of force in the X-direction, and protects the rear trunk and hydrogen tank mounting points from deformation.

[0004] According to an embodiment of the present invention, the rear part of the vehicle body includes: a rear anti-collision beam, the two ends of which are connected to the rear longitudinal beam of the vehicle body; a rear cross beam, which is formed by extrusion of a profile, and the ends of the rear cross beam are relatively fixed to the rear longitudinal beam of the vehicle body, the rear cross beam is located above the rear anti-collision beam and is spaced apart from the rear anti-collision beam, and along the front and rear direction of the vehicle body, the rear anti-collision beam is located behind the rear cross beam.

[0005] According to the rear part of the vehicle body in an embodiment of the present invention, the structural strength of the rear part of the vehicle body can be improved by providing a rear anti-collision beam and a rear cross beam connected to the rear longitudinal beam of the vehicle body. Two force transmission paths can be formed after a rear-end collision of the vehicle body, thereby improving the rear-end collision performance of the vehicle body and facilitating the force transmission performance of the vehicle body in the X direction, thereby protecting the rear trunk and the hydrogen tank installation point from deformation.

[0006] According to some embodiments of the present invention, the rear part of the vehicle body further includes: a bracket, which includes two brackets and is respectively arranged between the rear longitudinal beam of the vehicle body and the upper side beam of the wheel arch on both sides, the upper side beam of the wheel arch extends along the front and rear direction of the vehicle body and is located above the rear longitudinal beam of the vehicle body and is spaced apart from the rear longitudinal beam of the vehicle body, and the two ends of the rear cross beam are connected to the bracket.

[0007] According to some embodiments of the present invention, in the rear portion of the vehicle body, there are two brackets, and the two brackets are symmetrically distributed at both ends of the rear cross beam.

[0008] According to some embodiments of the present invention, at the rear portion of the vehicle body, the rear cross beam and / or the rear anti-collision beam are configured as an arched structure, with a middle portion thereof being curved and convex toward the rear.

[0009] According to some embodiments of the present invention, in the rear portion of the vehicle body, the rear cross beam has a rearward curvature greater than the rearward curvature of the rear anti-collision beam.

[0010] According to some embodiments of the present invention, at the rear portion of the vehicle body, a thickness of the rear cross beam along the front-to-rear direction is greater than a thickness of the rear anti-collision beam along the front-to-rear direction.

[0011] According to some embodiments of the present invention, the rear part of the vehicle body further includes a hydrogen tank mounting frame, which is used to install a hydrogen tank. The hydrogen tank mounting frame is located between the two rear longitudinal beams of the vehicle body and in front of the rear cross beam.

[0012] According to the rear part of the vehicle body in some embodiments of the present invention, the hydrogen tank mounting frame includes a front frame crossbeam and a rear frame crossbeam, the ends of the front frame crossbeam and the rear frame crossbeam are connected to the rear longitudinal beam of the vehicle body, two frame longitudinal beams are provided between the front frame crossbeam and the rear frame crossbeam, the two frame longitudinal beams are spaced apart in parallel in the transverse direction, and a hydrogen tank mounting point is provided at the connection between the frame longitudinal beam and the rear frame crossbeam and / or the front frame crossbeam.

[0013] According to some embodiments of the present invention, a hollow structural cavity is formed in the rear cross beam of the vehicle body, and structural ribs are provided in the structural cavity, which divide the structural cavity into a plurality of spaced-apart sub-cavities.

[0014] The present invention also provides a vehicle.

[0015] A vehicle according to an embodiment of the present invention is provided with the rear vehicle body according to any one of the above embodiments.

[0016] The advantages of the vehicle and the rear body mentioned above over the prior art are the same and will not be repeated here.

[0017] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0019] Figure 1 is a schematic structural diagram of the rear portion of a vehicle body according to an embodiment of the present invention;

[0020] Figure 2 is a top view of the rear portion of a vehicle body according to an embodiment of the present invention;

[0021] Figure 3 is a front view of the rear portion of a vehicle body according to an embodiment of the present invention;

[0022] Figure 4 2 is a schematic structural diagram of a rear crossbeam according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] Rear body 100,

[0025] Rear crossbeam 1, door lock installation notch 11, structural cavity 12, sub-cavity 121, structural rib 13, transverse rib 131, vertical rib 132,

[0026] Rear anti-collision beam 2, bracket 3, vehicle body rear longitudinal beam 4, wheel house upper side beam 5, hydrogen tank mounting frame 6, front frame cross beam 61, rear frame cross beam 62, frame longitudinal beam 63. DETAILED DESCRIPTION

[0027] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0028] Unless otherwise specified, the front-to-back direction in this application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0029] Reference below Figure 1-Figure 4 The rear vehicle body 100 according to an embodiment of the present invention can improve the rear-end collision performance of the vehicle body, facilitate the force transmission performance of the vehicle body in the X direction, and further protect the rear trunk and the hydrogen tank installation point from deformation.

[0030] The rear vehicle body 100 according to the embodiment of the present invention includes a rear anti-collision beam 2 and a rear cross beam 1 .

[0031] The two ends of the rear anti-collision beam 2 are connected to the rear longitudinal beam 4 of the vehicle body, which can realize the connection between the rear anti-collision beam 2 and the rear longitudinal beam 4 of the vehicle body. There are two rear longitudinal beams 4 of the vehicle body, and the two rear longitudinal beams 4 of the vehicle body are respectively located on the left and right sides of the vehicle body. The left and right ends of the rear anti-collision beam 2 are respectively connected to the left and right rear longitudinal beams 4 of the vehicle body, and the connection method can be welding, which improves the connection strength between the rear anti-collision beam 2 and the rear longitudinal beam 4 of the vehicle body.

[0032] The rear cross beam 1 is formed by extrusion of a profile. The extruded profile is high in strength, light in weight, corrosion-resistant and durable. It can ensure the strength of the rear cross beam 1 itself and make the structure of the rear cross beam 1 lighter. The extruded profile can ensure the effectiveness of the force transmission channel and improve the safety performance of the entire vehicle in side collisions.

[0033] Specifically, the ends of the rear cross beam 1 are relatively fixed to the rear longitudinal beams 4 of the vehicle body, that is, the left and right ends of the rear cross beam 1 are indirectly connected to the left and right rear longitudinal beams 4 of the vehicle body, so that the rear cross beam 1 can be fixed, and the rear cross beam 1 is fixedly connected to the rear longitudinal beams 4 of the vehicle body, thereby improving the connection strength of the rear cross beam 1. Among them, the rear cross beam 1 is located above the rear anti-collision beam 2 and is spaced apart from the rear anti-collision beam 2. Along the front-to-back direction of the vehicle body, the rear anti-collision beam 2 is located behind the rear cross beam 1. Figure 1 As shown, the rear anti-collision beam 2 is located at the rear side of the vehicle body and behind the rear cross beam 1. The rear cross beam 1 is located above the rear anti-collision beam 2 and is spaced apart from the rear anti-collision beam 2. The left and right ends of the rear trunk and the rear anti-collision beam 2 are respectively connected and fixed to the rear longitudinal beam 4 of the vehicle body, which can realize the connection of the internal structure of the rear body 100. The three form a frame connection, which can improve the structural strength of the rear body 100 and has high stability. After the rear end of the vehicle is severely collided, the rear anti-collision beam 2 can transfer the force to the rear longitudinal beam 4 and the rear cross beam 1 of the vehicle body, and can disperse the impact force. Among them, the hydrogen tank is installed under the trunk to protect the safety of the rear trunk and the safety of the hydrogen tank installation point. By adding the force transmission path of the rear cross beam 1, the effect of force transmission along the Y direction during rear-end collision of the vehicle can be improved, thereby improving the rear-end collision performance of the vehicle body.

[0034] Therefore, by setting up a dual force transmission path of the rear anti-collision beam 2 and the rear cross beam 1, the impact force can be effectively transmitted through the rear anti-collision beam 2 and the rear cross beam 1 after a serious collision at the rear end of the vehicle body, avoiding the breakage of the rear anti-collision beam 2 and damage to the rear trunk structure and the hydrogen tank installation point due to untimely force transmission, and is beneficial to the force transmission performance of the vehicle body in the X direction, thereby protecting the rear trunk and the hydrogen tank installation point from deformation, making the vehicle safer.

[0035] According to the rear part 100 of the vehicle body in an embodiment of the present invention, the structural strength of the rear part of the vehicle body can be improved by providing a rear anti-collision beam 2 and a rear cross beam 1 connected to the rear longitudinal beam 4 of the vehicle body. Two force transmission paths can be formed after a rear-end collision of the vehicle body, thereby improving the rear-end collision performance of the vehicle body and facilitating the force transmission performance of the vehicle body in the X direction, thereby protecting the rear trunk and the hydrogen tank installation point from deformation.

[0036] In some embodiments, the rear vehicle body 100 further includes a bracket 3 .

[0037] The brackets 3 include two brackets 3, which are respectively arranged between the rear longitudinal beams 4 of the vehicle body and the wheel house top side beams 5 on both sides. In other words, by placing the brackets 3 between the rear longitudinal beams 4 of the vehicle body and the wheel house top side beams 5, the rear longitudinal beams 4 of the vehicle body and the wheel house top side beams 5 can be connected and fixed by connecting the brackets 3 to the rear longitudinal beams 4 of the vehicle body and then to the wheel house top side beams 5.

[0038] Among them, the wheel house upper side beam 5 extends along the front-rear direction of the vehicle body and is located above the rear longitudinal beam 4 of the vehicle body, that is, Figure 1As shown, the upper end of the bracket 3 can be connected to the wheel house upper side beam 5, and the lower end of the bracket 3 can be connected to the rear longitudinal beam 4 of the vehicle body, so that the wheel house upper side beam 5 and the rear longitudinal beam 4 of the vehicle body can be spaced apart, and the wheel house upper side beam 5 and the rear longitudinal beam 4 of the vehicle body are both extended in the front and rear directions, which can realize the layout and connection of the wheel house upper side beam 5, the bracket 3 and the rear longitudinal beam 4 of the vehicle body, and the spaced apart arrangement can provide two force transmission paths, that is, after the rear of the vehicle body is hit, the impact force is divided into two transmission paths, one path is transmitted along the bracket 3 and the wheel house upper side beam 5 to the front side of the vehicle body, and the other path is transmitted forward along the rear longitudinal beam 4 of the vehicle body, which can quickly disperse the impact force and improve the rear-end collision performance of the vehicle.

[0039] Among them, the two ends of the rear cross beam 1 are connected to the bracket 3, which can realize the connection between the rear cross beam 1 and the bracket 3. The connection method is welding, which can improve the connection strength between the rear cross beam 1 and the bracket 3, and the lower end of the bracket 3 is connected to the rear longitudinal beam 4 of the vehicle body, which can realize the connection and fixation of the bracket 3 and the rear longitudinal beam 4 of the vehicle body. The connection method is welding, which can improve the connection strength between the bracket 3 and the rear longitudinal beam 4 of the vehicle body, and thus realize the indirect connection between the rear cross beam 1 and the rear longitudinal beam 4 of the rear vehicle body.

[0040] Specifically, such as Figure 1 As shown, the bracket 3 is arranged on the outer side of the rear part 100 of the vehicle body, and the rear cross beam 1 is arranged on the inner side of the rear part 100 of the vehicle body. The left and right ends of the rear cross beam 1 are connected to the inner side of the bracket 3, and the lower end of the bracket 3 is connected to the upper side of the rear longitudinal beam 4 of the vehicle body, so that the connection and fixation between the rear cross beam 1, the bracket 3 and the rear longitudinal beam 4 of the vehicle body can be realized. When the rear end of the vehicle body is hit by a large force, the impact force is transmitted to the bracket 3 and the rear cross beam 1 through the rear anti-collision beam 2, so as to realize the force transmission path along the rear cross beam 1, improve the force transmission performance of the vehicle body along the X direction, and thus improve the rear collision performance of the vehicle body, and the hydrogen tank installation point is located on the lower side of the trunk. The reinforcement of the structure of the rear part 100 of the vehicle body by the rear cross beam 1 can be used to resist the impact force, thereby protecting the installation position of the rear trunk and the hydrogen tank from deformation, and improving the safety of the vehicle.

[0041] In some embodiments, there are two brackets 3 , and the two brackets 3 are symmetrically distributed at both ends of the rear cross beam 1 .

[0042] Specifically, there are two brackets 3, which are a left bracket and a right bracket respectively. The two brackets 3 are symmetrically distributed along the left and right ends, and the two brackets 3 are connected to the left and right ends of the rear cross beam 1, so that the two brackets 3 are symmetrically connected to the rear cross beam 1. The rear cross beam 1 is connected to the lower side of the two brackets 3 and is horizontally connected to the two brackets 3 to support the left and right brackets 3, which can improve the connection strength between the rear cross beam 1 and the two brackets 3 and make the structure of the two brackets 3 more stable. The rear cross beam 1 is arranged near the lower side of the two brackets 3, which can make the luggage compartment's loading and unloading space larger, which is convenient for users to load and unload luggage, and the two brackets 3 are symmetrically arranged, and its overall structure is regular.

[0043] In some embodiments, the rear cross beam 1 and / or the rear anti-collision beam 2 are configured as an arched structure, and the middle portion thereof is curved and convex toward the rear.

[0044] Specifically, the rear cross beam 1 is constructed as an arch structure, such as Figure 2 As shown, the rear cross beam 1 is symmetrically arranged on the left and right, and the middle part is bent and protruded toward the rear, that is, the shape of the rear cross beam 1 is an arch structure bent toward the rear, the arch structure can increase the structural strength and reliability of the rear cross beam 1, and make the connection between the rear cross beam 1 and the two brackets 3 more stable, and the rear anti-collision beam 2 can also be constructed as an arch structure, the rear anti-collision beam 2 is also symmetrically arranged on the left and right, and the middle part is bent and protruded toward the rear, that is, the shape of the rear anti-collision beam 2 is an arch structure bent toward the rear, the arch structure can increase the structural strength and reliability of the rear anti-collision beam 2, and make the connection between the rear anti-collision beam 2 and the rear longitudinal beam 4 of the vehicle body more stable.

[0045] Therefore, the rear cross beam 1 and the rear anti-collision beam 2 can be constructed as an arch structure, and the middle part is bent backward, which is beneficial to improving the self-strength of the rear cross beam 1 and the rear anti-collision beam 2. When the rear end of the vehicle body is subjected to a large-force collision, the arch structure bent backward can better resist the impact force and can increase the service life of the rear cross beam 1 and the rear anti-collision beam 2.

[0046] In some embodiments, the rear cross beam 1 has a rearward curvature greater than the rear anti-collision beam 2 .

[0047] Specifically, such as Figure 2 As shown, the arc of the rear cross beam 1 bending toward the rear is set to be larger, which can increase the force transmission performance of the rear cross beam 1, and the rear cross beam 1 is connected and cooperated with the two brackets 3, which can reduce the impact of the force on the brackets 3, and thus protect the rear trunk from damage. The arc of the rear anti-collision beam 2 bending toward the rear is set to be smaller, and the front side of the rear anti-collision beam 2 is connected and cooperated with the two rear longitudinal beams 4 of the vehicle body, which can meet the force condition of the rear anti-collision beam 2 and transmit the force to the two rear longitudinal beams 4 of the vehicle body and the two brackets 3. Therefore, the arc of the rear cross beam 1 bending toward the rear is greater than the arc of the rear anti-collision beam 2 bending toward the rear, which can make the force transmission performance of the rear cross beam 1 and the rear anti-collision beam 2 better, and can improve the force transmission performance of the vehicle body along the X direction.

[0048] In some embodiments, the thickness of the rear cross beam 1 along the front-to-rear direction is greater than the thickness of the rear anti-collision beam 2 along the front-to-rear direction.

[0049] Specifically, such as Figure 2 、 Figure 3As shown, the thickness of the rear cross beam 1 along the front-to-back direction is set to be larger, and the thickness of the rear cross beam 1 along the front-to-back direction is matched with the thickness of the bracket 3, and the width of the rear cross beam 1 along the up-down direction is set to be smaller, which can meet the structural strength and bending resistance of the rear cross beam 1, the thickness of the rear anti-collision beam 2 along the front-to-back direction is set to be smaller, and the width of the rear anti-collision beam 2 along the up-down direction is set to be larger, and the width of the rear anti-collision beam 2 along the up-down direction is matched with the width of the rear longitudinal beam 4 of the vehicle body, which can meet the structural strength and bending resistance of the rear anti-collision beam 2.

[0050] Therefore, by setting the thickness of the rear cross beam 1 in the front-to-back direction to be greater than the thickness of the rear anti-collision beam 2 in the front-to-back direction, and setting the width of the rear cross beam 1 in the up-down direction to be smaller than the width of the rear anti-collision beam 2 in the up-down direction, the structural strength and connection and fixation requirements of the rear cross beam 1 and the rear anti-collision beam 2 can be met respectively, thereby making the force transmission performance of the rear cross beam 1 and the rear anti-collision beam 2 better, thereby improving the force transmission performance of the vehicle body along the X direction.

[0051] In some embodiments, the rear portion of the vehicle body 100 further includes a hydrogen tank mounting frame 6 , which is used to mount a hydrogen tank. The hydrogen tank mounting frame 6 is located between the two rear longitudinal beams 4 of the vehicle body, and the hydrogen tank mounting frame 6 is located in front of the rear cross beam 1 .

[0052] Specifically, the hydrogen tank mounting frame 6 can be set in front of the rear cross beam 1 and installed below the rear cross beam 1, and the hydrogen tank mounting frame 6 is connected to the inner sides of the two rear longitudinal beams 4 of the vehicle body, so that the layout and connection of the hydrogen tank mounting frame 6 can be realized. The connection method can be welding, which can improve the connection strength between the hydrogen tank mounting frame 6 and the two rear longitudinal beams 4 of the vehicle body. The hydrogen tank mounting frame 6 is set to install the hydrogen tank, so that the installation of the hydrogen tank can be realized, and the hydrogen tank can be hidden in front of the rear cross beam 1. In this way, after the rear end of the vehicle body is hit, the rear cross beam 1 and the rear anti-collision beam 2 can be used to protect the hydrogen tank, thereby improving the safety of the vehicle driving.

[0053] In some embodiments, the hydrogen tank mounting frame 6 includes a front frame crossbeam 61 and a rear frame crossbeam 62. The ends of the front frame crossbeam 61 and the rear frame crossbeam 62 are connected to the rear longitudinal beam 4 of the vehicle body. Two frame longitudinal beams 63 are provided between the front frame crossbeam 61 and the rear frame crossbeam 62. The two frame longitudinal beams 63 are spaced apart in parallel along the transverse direction. In this way, the structural layout and connection of the hydrogen tank mounting frame 6 can be realized, and the formed structural strength is very high, which can improve the strength of the hydrogen tank installation.

[0054] Among them, such as Figure 2As shown, the front frame cross beam 61 and the rear frame cross beam 62 are both arranged to extend transversely. The front frame cross beam 61 can be connected to the front side of the vehicle body rear longitudinal beam 4, and the rear frame cross beam 62 can be connected to the rear side of the vehicle body rear longitudinal beam 4. Among them, two frame longitudinal beams 63 are connected between the front frame longitudinal beam 61 and the rear frame longitudinal beam 62. The two frame longitudinal beams 63 are both arranged to extend in the front-back direction, and the two frame longitudinal beams 63 are spaced apart in parallel in the transverse direction. The front ends of the two frame longitudinal beams 63 are connected to the front frame cross beam 61, and the rear ends of the two frame longitudinal beams 63 are connected to the rear frame cross beam 62. Thus, the two frame longitudinal beams 63 are used to support between the front frame cross beam 61 and the rear frame cross beam 62, which can improve the strength of the overall structure. Moreover, the front frame cross beam 61, the rear frame cross beam 62, the two vehicle body rear longitudinal beams 4 and the two frame longitudinal beams 63 are connected to form a "mu" - shaped structural framework, making the structure strength of the hydrogen tank installation skeleton 6 higher and the connection method is all welding, which can improve the installation efficiency of the hydrogen tank installation skeleton 6 structure.

[0055] Meanwhile, hydrogen tank installation points are provided at the connection positions of the frame longitudinal beam 63 and the rear frame cross beam 62 and / or the front frame cross beam 61. Thus, the connection and fixation of the hydrogen tank and the hydrogen tank installation skeleton 6 can be realized through the hydrogen tank installation points. Among them, the hydrogen tank and the hydrogen tank installation skeleton 6 can be connected in the form of a strap, or can be detachably connected through bolt fasteners, both of which can realize the connection of the hydrogen tank and the hydrogen tank installation skeleton 6.

[0056] In some embodiments, the height of the rear anti - collision beam 2 is lower than that of the rear cross beam 1, and the rear anti - collision beam 2 is located at the rear lower side of the rear cross beam 1.

[0057] Specifically, as Figure 1 、 Figure 3 shown, the vehicle body rear longitudinal beam 4 is arranged at the lower side of the vehicle body rear part 100. Two brackets 3 are located at the upper side of the vehicle body rear longitudinal beam 4. The rear anti - collision beam 2 is connected to the lower vehicle body rear longitudinal beam 4. The rear cross beam 1 is arranged above the rear anti - collision beam 2 and is connected to the two brackets 3, and the rear cross beam 1 and the rear anti - collision beam 2 are arranged at intervals, that is, the rear anti - collision beam 2 is located at the rear lower side of the rear cross beam 1, and the rear anti - collision beam 2 and the rear cross beam 1 are distributed in parallel. That is to say, in the vehicle body tail anti - collision structure, the rear anti - collision beam 2 serves as the first protection structure, and the rear cross beam 1 serves as the second protection structure, which can make the vehicle body tail have double anti - collision protection, can improve the resistance of the vehicle body tail after collision, can protect the internal structure of the trunk and the hydrogen tank installation points from being damaged, and is beneficial to the force transmission performance in the X - direction of the vehicle body, and can improve the safety performance of the vehicle.

[0058] In some embodiments, a door lock installation notch 11 is formed on the front side of the rear cross beam 1, and the door lock installation notch 11 is used for installing the rear door lock.

[0059] Specifically, the rear cross beam 1 is provided with a door lock installation notch 11, and the door lock installation notch 11 is used for installing the rear door lock. Among them, as Figure 2 、 Figure 4 As shown, the door lock mounting notch 11 is provided on the front side of the rear cross member 1, that is, the door lock mounting notch 11 is provided inside the rear trunk, allowing the rear door lock to be installed inside the vehicle. The door lock mounting notch 11 is recessed from the front side of the rear cross member 1 toward the interior, and the door lock mounting notch 11 is vertically continuous and open forward, allowing the rear door lock to be installed in front of the door lock mounting notch 11. The door lock mounting notch 11 has an arc transition at the corner. The arc transition can improve the strength of the door lock mounting notch 11 without reducing the structural strength of the rear cross member 1, and makes the structural transition of the door lock mounting notch 11 natural and regular. Therefore, by providing the door lock mounting notch 11, the space for installing the rear door lock and the rear cross member 1 can be made more compact, which can reduce the space occupied in the rear trunk.

[0060] In some embodiments, a hollow structural cavity 12 is formed in the rear cross beam 1 , and structural ribs 13 are provided in the structural cavity 12 . The structural ribs 13 divide the structural cavity 12 into a plurality of spaced-apart sub-cavities 121 .

[0061] Specifically, a structural cavity 12 is formed in the rear cross beam 1. The structural cavity 12 extends along the length direction of the rear cross beam 1, and the left and right ends of the structural cavity 12 are open. Figure 4 As shown, the structural cavity 12 is a hollow structure. The structure of the structural cavity 12 is matched with the structure of the rear cross beam 1. The internal shape of the structural cavity 12 is a bilaterally symmetrical arched structural cavity 12 body, and the middle part of the structural cavity 12 is bent and protruded toward the rear. The arrangement of the structural cavity 12 can enable the rear cross beam 1 to have energy absorption and buffering effects. When subjected to a collision, the force transmission performance of the rear cross beam 1 along the X and Y directions can be improved. The arrangement of the structural cavity 12 in the rear cross beam 1 can reduce the weight of the rear cross beam 1, thereby reducing the weight of the vehicle body. The rear cross beam 1 and the structural cavity 12 are arranged as a symmetrical structure, and its structure is regular and easy to process.

[0062] like Figure 4 As shown, a structural rib 13 is provided in the structural cavity 12. The structural rib 13 can be provided as a vertical rib 132 and a transverse rib 131. The vertical rib 132 is located in the middle of the structural cavity 12. The transverse rib 131 is connected to the rear side of the vertical rib 132. The vertical rib 132 and the transverse rib 131 extend along the length direction of the rear cross beam 1 to support the inner wall of the rear cross beam 1, thereby improving the structural strength of the rear cross beam 1 and making the force transmission performance of the rear cross beam 1 stronger. The structural rib 13 can separate the structural cavity 12 into a plurality of sub-cavities 121. The plurality of sub-cavities 121 are spaced apart and are also provided to extend along the length direction of the rear cross beam 1. The plurality of sub-cavities 121 can absorb the impact energy received. Figure 4 As shown, there can be two structural ribs 13 and three sub-cavities 121. The structure and number of the structural ribs 13 and the sub-cavities 121 can be designed according to actual conditions as long as they can meet the structural strength of the rear cross beam 1.

[0063] The present invention also provides a vehicle.

[0064] The vehicle according to the embodiment of the present invention is provided with a rear vehicle body 100 according to any one of the above-mentioned embodiments. By providing a rear anti-collision beam 2 and a rear cross beam 1 connected with the rear longitudinal beam 4 of the vehicle body, the structural strength of the rear vehicle body can be improved, and two force transmission paths can be formed after a rear-end collision of the vehicle body, thereby improving the rear-end collision performance of the vehicle body, facilitating the force transmission performance of the vehicle body in the X direction, and further protecting the rear trunk and the hydrogen tank installation point from deformation.

[0065] 1. In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0066] 2. In the description of the present invention, "first feature" and "second feature" may include one or more of these features.

[0067] 3. In the description of the present invention, “plurality” means two or more.

[0068] 4. In the description of the present invention, a first feature being “above” or “below” a second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but via another feature therebetween.

[0069] 5. In the description of the present invention, the phrases “above”, “above” and “above” a first feature to a second feature include the first feature being directly above and obliquely above the second feature, or simply indicate that the first feature is horizontally higher than the second feature.

[0070] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative uses of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0071] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A rear part of a vehicle body, characterized in that: include: A rear anti-collision beam, both ends of which are connected to the rear longitudinal beams of the vehicle body; A rear cross member, the rear cross member is formed by extrusion of a profile, an end portion of the rear cross member is fixed relative to the rear longitudinal member of the vehicle body, the rear cross member is located above the rear anti-collision beam and is spaced apart from the rear anti-collision beam, and along the front-to-rear direction of the vehicle body, the rear anti-collision beam is located behind the rear cross member; A rear luggage box, both ends of which are connected to the rear longitudinal beams of the vehicle body; The brackets include two brackets, each of which is disposed between the rear longitudinal beams of the vehicle body and the upper side beams of the wheel house on both sides. The upper side beams of the wheel house extend in the front-to-rear direction of the vehicle body and are located above the rear longitudinal beams of the vehicle body and are spaced apart from the rear longitudinal beams of the vehicle body. Both ends of the rear cross beam are connected to the brackets. A hydrogen tank mounting frame is used to mount a hydrogen tank. The hydrogen tank is mounted below the rear trunk. The hydrogen tank mounting frame is located between the two rear longitudinal beams of the vehicle body. The hydrogen tank mounting frame is located in front of the rear cross beam and below the rear cross beam.

2. The rear vehicle body according to claim 1, characterized in that: There are two brackets, and the two brackets are symmetrically distributed at both ends of the rear cross beam.

3. The rear vehicle body according to claim 1, characterized in that: The rear cross beam and / or the rear anti-collision beam are configured as an arched structure, and a middle portion thereof is curved and convex toward the rear.

4. The rear vehicle body according to claim 3, characterized in that: The curvature of the rear cross beam bent backward is greater than the curvature of the rear anti-collision beam bent backward.

5. The rear vehicle body according to claim 1, characterized in that: The thickness of the rear cross beam along the front-to-rear direction is greater than the thickness of the rear anti-collision beam along the front-to-rear direction.

6. The rear vehicle body according to claim 1, characterized in that: The hydrogen tank mounting frame includes a front frame crossbeam and a rear frame crossbeam, the ends of the front frame crossbeam and the rear frame crossbeam are connected to the rear longitudinal beam of the vehicle body, two frame longitudinal beams are provided between the front frame crossbeam and the rear frame crossbeam, the two frame longitudinal beams are spaced apart in parallel along the transverse direction, and a hydrogen tank mounting point is provided at the connection between the frame longitudinal beam and the rear frame crossbeam and / or the front frame crossbeam.

7. The rear vehicle body according to claim 1, wherein: A hollow structural cavity is formed in the rear cross beam, and structural ribs are provided in the structural cavity. The structural ribs divide the structural cavity into a plurality of spaced-apart sub-cavities.

8. A vehicle, characterized in that: A vehicle body rear portion according to any one of claims 1 to 7 is provided.

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