Rear body assembly and vehicle

Abstract

The application relates to the technical field of vehicles and discloses a rear vehicle body assembly and a vehicle, the rear vehicle body assembly comprising: a rear vehicle body comprising a rear vehicle body frame, the rear vehicle body frame comprising a vehicle body bottom and two vehicle body sides, the two vehicle body sides being opposite and spaced apart along the left-right direction of the rear vehicle body, and the vehicle body bottom being connected between the two vehicle body sides; a reinforcing frame is arranged between the two vehicle body sides, at least one vehicle body side is fixed with the reinforcing frame, and the reinforcing frame is fixed to the vehicle body bottom. According to the rear vehicle body assembly in the embodiment of the application, the reinforcing frame is arranged, in the case of vehicle collision, the load borne by the vehicle body bottom and the vehicle body sides can be effectively transmitted and dispersed through the reinforcing frame, the risk of stress concentration of the rear vehicle body frame is reduced, the probability of deformation of the rear vehicle body frame is reduced, the impact resistance and the structural strength of the rear vehicle body frame are improved, and the collision safety of the vehicle is improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to a rear body assembly and a vehicle having the rear body assembly. Background Technology

[0002] In related technologies, under vehicle driving and collision conditions, the load on the rear body frame of existing vehicles cannot be effectively transferred and dispersed, which makes the rear body frame prone to stress concentration risk, causing structural deformation of the rear body frame, resulting in insufficient impact resistance and structural strength of the rear body frame, affecting vehicle collision safety. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a rear vehicle assembly that improves the impact resistance and structural strength of the rear vehicle frame, thereby improving vehicle collision safety.

[0004] The present invention further proposes a vehicle having the above-described rear body assembly.

[0005] According to a first aspect of the present invention, a rear vehicle assembly includes: a rear vehicle, the rear vehicle including a rear vehicle frame, the rear vehicle frame including a vehicle bottom and two vehicle sides, the two vehicle sides being opposite to and spaced apart in the left-right direction of the rear vehicle, the vehicle bottom being connected between the two vehicle sides; a reinforcing frame, the reinforcing frame being provided between the two vehicle sides, at least one vehicle side being fixedly provided with the reinforcing frame, and the reinforcing frame being fixed to the vehicle bottom.

[0006] According to the first aspect of the present invention, the rear body assembly, by providing a reinforcing frame, can effectively transfer and disperse the loads on the bottom and sides of the vehicle body under collision conditions. This is beneficial to reducing the risk of stress concentration in the rear body frame, reducing the probability of deformation of the rear body frame, improving the impact resistance and structural strength of the rear body frame, and thus improving the collision safety of the vehicle.

[0007] In some examples of the present invention, the reinforcing frame includes: a first longitudinal beam, a second longitudinal beam, and a plurality of support beams. The support beams extend along the vertical direction of the rear vehicle body. The first longitudinal beam is positioned at a height higher than the second longitudinal beam and is spaced apart from the second longitudinal beam. The first longitudinal beam is fixed to the side of the vehicle body, and the second longitudinal beam is fixed to the bottom of the vehicle body. The plurality of support beams are arranged along the longitudinal direction of the rear vehicle body and are all connected between the first longitudinal beam and the second longitudinal beam.

[0008] In some examples of the present invention, the plurality of support beams include: a first support beam and a second support beam, the side of the vehicle body includes a tower pack body, at least a portion of the first support beam is located on the front side of the tower pack body, and at least a portion of the second support beam is located on the rear side of the tower pack body.

[0009] In some examples of the present invention, the second longitudinal beam includes: a first longitudinal beam segment and a second longitudinal beam segment; the bottom of the vehicle body includes a first crossbeam and a second crossbeam; the first crossbeam is located on the front side of the second crossbeam; the first longitudinal beam segment is connected between the first crossbeam and the second crossbeam; the second longitudinal beam segment and the second support beam are located on the rear side of the second crossbeam; and the second longitudinal beam segment is connected between the second support beam and the second crossbeam.

[0010] In some examples of the present invention, the vehicle body side includes: a side panel, the side panel including a C-pillar and a D-pillar, and a first longitudinal beam fixedly connected to both the C-pillar and the D-pillar.

[0011] In some examples of the present invention, the rear body assembly further includes: two reinforcing longitudinal beams located below and fixed to the bottom of the body, the two reinforcing longitudinal beams being opposite to and spaced apart in the left-right direction of the rear body, the rear body having a rear energy-absorbing structure located behind the reinforcing longitudinal beams, and the rear end of the reinforcing longitudinal beams being fixedly connected to the rear energy-absorbing structure.

[0012] In some examples of the present invention, the reinforcing longitudinal beam includes a front longitudinal beam segment, a middle longitudinal beam segment, and a rear longitudinal beam segment. The middle longitudinal beam segment connects the front longitudinal beam segment and the rear longitudinal beam segment. From front to back, the front longitudinal beam segment is inclined toward the other reinforcing longitudinal beam, the middle longitudinal beam segment extends in a straight line along the front-rear direction of the rear vehicle body, and the rear longitudinal beam segment is inclined away from the other reinforcing longitudinal beam.

[0013] In some examples of the present invention, the rear vehicle assembly further includes: a bottom frame structure located below and fixed to the bottom of the vehicle body, the bottom frame structure including: a frame body and a reinforcing structure, the frame body including two frame longitudinal beams and two frame transverse beams, the two frame longitudinal beams being opposite to and spaced apart along the left-right direction of the rear vehicle body, the two frame transverse beams being connected between the two frame longitudinal beams, the two frame transverse beams being spaced apart along the front-rear direction of the rear vehicle body, the reinforcing structure being located between the two frame transverse beams and fixed to the frame body; and a lower control arm mounting bracket fixed to the frame body and the reinforcing structure.

[0014] In some examples of the present invention, the bottom frame structure is located below the reinforcing longitudinal beam and fixed to the reinforcing longitudinal beam; and / or a lower swing arm mounting bracket is provided at the connection between the frame crossbeam and the frame longitudinal beam, and the lower swing arm mounting bracket is fixed to the reinforcing structure.

[0015] A vehicle according to a second aspect of the present invention includes the aforementioned rear body assembly.

[0016] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a partial schematic diagram of a vehicle according to an embodiment of the present invention; Figure 2 This is another partial schematic diagram of a vehicle according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the rear vehicle body assembly according to an embodiment of the present invention; Figure 4 This is a partial schematic diagram of the rear vehicle body assembly according to an embodiment of the present invention.

[0018] Figure label: Rear body components 600; Rear body 610; Rear body frame 611; Bottom of body 612; First crossbeam 6121; Second crossbeam 6122; Third crossbeam 6123; Fourth crossbeam 6124; Side of body 613; Side panel 6131; C-pillar 6132; D-pillar 6133; Tower bumper 6134; Tower bumper body 6135; Tower bumper extension structure 6136; Reinforcing frame 620; First longitudinal beam 621; Second longitudinal beam 622; First longitudinal beam segment 6221; Second longitudinal beam segment 6222; Support beam 623; First support beam 6231; Second support beam 6232; Reinforced longitudinal beam 630; front longitudinal beam segment 631; middle longitudinal beam segment 632; rear longitudinal beam segment 633; Bottom frame structure 640; frame body 641; frame longitudinal beam 6411; frame transverse beam 6412; reinforcing structure 642; reinforcing beam 6421; Lower control arm mounting bracket 650; 660 rear energy absorption structure; Connection structure 670; Vehicle 900. Detailed Implementation

[0019] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0020] The following is for reference. Figures 1-4A rear body assembly 600 according to an embodiment of the present invention is described, which can be mounted on a vehicle 900.

[0021] like Figure 1 , Figure 4 As shown, according to a first aspect embodiment of the present invention, the rear body assembly 600 includes: a rear body 610, the rear body 610 including a rear body frame 611, the rear body frame 611 including a body bottom 612 and two body sides 613, the two body sides 613 being opposite to and spaced apart in the left-right direction of the rear body 610, the body bottom 612 being connected between the two body sides 613; and a reinforcing frame 620, the reinforcing frame 620 being provided between the two body sides 613, at least one body side 613 being fixedly provided with the reinforcing frame 620, and the reinforcing frame 620 being fixed to the body bottom 612.

[0022] Among them, such as Figure 1 As shown, the front-to-back direction of the rear vehicle body 610 can be defined as the X direction, which is also the front-to-back direction of the vehicle 900. The left-to-right direction of the rear vehicle body 610 can be defined as the Y direction, which is also the left-to-right direction of the vehicle 900. Figure 2 As shown, the vertical direction of the rear vehicle body 610 can be defined as the Z direction, i.e., the vertical direction in the figure.

[0023] The bottom 612 and sides 613 of the vehicle body can both be made of metal materials, such as aluminum alloy or steel, which helps to improve the structural strength of the rear vehicle frame 611. Figure 4 As shown, the bottom of the vehicle body 612 can be located at the bottom of the rear vehicle frame 611. The bottom of the vehicle body 612 can be connected between the two side parts of the vehicle body 613, which is beneficial to improving the overall structural strength and connection rigidity of the rear vehicle frame 611. Specifically, the bottom of the vehicle body 612 and the side parts of the vehicle body 613 can be fixedly connected by welding, bolting, integral molding, or other methods.

[0024] The reinforcing frame 620 can be made of metal materials, specifically steel, aluminum alloy, or other metal materials, to ensure good rigidity and strength. At least one side of the vehicle body 613 is fixedly provided with the reinforcing frame 620. As one embodiment, one side of the vehicle body 613 may be fixedly provided with the reinforcing frame 620; as another embodiment, both side of the vehicle body 613 may be fixedly provided with the reinforcing frame 620. This application embodiment uses the example of both side of the vehicle body 613 being fixedly provided with the reinforcing frame 620, and the side of the vehicle body 613 and the reinforcing frame 620 can be configured in a one-to-one correspondence. The reinforcing frame 620 is fixedly connected to the corresponding side of the vehicle body 613. Specifically, the reinforcing frame 620 and the corresponding side of the vehicle body 613 can be fixedly connected by welding, riveting, bolting, integral molding, or other methods to ensure the reliability of the connection between the reinforcing frame 620 and the side of the vehicle body 613.

[0025] The reinforcing frame 620 can also be fixedly connected to the bottom of the vehicle body 612. Specifically, the reinforcing frame 620 can be fixedly connected to the bottom of the vehicle body 612 by welding, bolting, or integral molding, which can ensure the connection stability between the reinforcing frame 620 and the bottom of the vehicle body 612, thereby improving the rigidity of the rear vehicle body frame 611.

[0026] In this embodiment, by setting a reinforcing frame 620, the loads on the bottom 612 and sides 613 of the vehicle body can be effectively transferred and dispersed through the reinforcing frame 620 in the event of a collision with the vehicle 900. This helps to reduce the risk of stress concentration in the rear body frame 611. Furthermore, the reinforcing frame 620 can effectively support the bottom 612 and sides 613 of the vehicle body, which helps to reduce the probability of deformation of the rear body frame 611, improves the impact resistance and structural strength of the rear body frame 611, enhances the structural reliability of the rear body components 600, and thus improves the collision safety of the vehicle 900.

[0027] In some examples of embodiments of the present invention, such as Figure 1 As shown, the reinforcing frame 620 may include: a first longitudinal beam 621, a second longitudinal beam 622, and a plurality of support beams 623. The support beams 623 extend along the vertical direction of the rear vehicle body 610. The first longitudinal beam 621 is set at a height higher than the second longitudinal beam 622 and is spaced apart from the second longitudinal beam 622. The first longitudinal beam 621 is fixed to the side of the vehicle body 613, and the second longitudinal beam 622 is fixed to the bottom of the vehicle body 612. The plurality of support beams 623 are arranged along the front-rear direction of the rear vehicle body 610 and are all connected between the first longitudinal beam 621 and the second longitudinal beam 622.

[0028] The reinforcing frame 620 may include two, three, four, or other supporting beams 623, such as... Figure 1As shown, this embodiment of the application uses a reinforced frame 620 including two support beams 623 as an example for illustration. Figure 2 , Figure 4 As shown, each side portion 613 of the vehicle body may include a side panel 6131 and a tower pack 6134. Along the left-right direction of the rear vehicle body 610, the side panel 6131 may be located outside the tower pack 6134. Along the vertical direction of the rear vehicle body 610, at least a portion of the side panel 6131 may be located above the tower pack 6134, and the side panel 6131 and the tower pack 6134 may be fixedly connected. As one embodiment, a portion of the structure of the side panel 6131 may be located above the tower pack 6134; as another embodiment, the entire structure of the side panel 6131 may be located above the tower pack 6134. The side panel 6131 may be made of metal materials, specifically steel, aluminum alloy, or other metal materials, to give the side panel 6131 good rigidity and strength.

[0029] The tower pack 6134 can be made of metal materials, specifically steel, aluminum alloy, or other metal materials, to ensure good rigidity and strength. The tower pack 6134 is fixedly connected to the side panel 6131, which helps ensure the connection strength between the side panel 6131 and the tower pack 6134, and improves the structural stability of the vehicle body side 613. Specifically, the tower pack 6134 and the side panel 6131 can be fixedly connected by welding, bolting, or integral molding.

[0030] The first longitudinal beam 621 is fixed to the side of the vehicle body 613, enabling a reliable connection between the reinforcing frame 620 and the side of the vehicle body 613. Specifically, the first longitudinal beam 621 can be fixed to the side of the vehicle body 613 by welding, bolting, riveting, or integral molding. Figure 1 , Figure 4 As shown, the first longitudinal beam 621 can extend along the front-rear direction of the rear vehicle body 610. The first longitudinal beam 621 can be located on the inner side of the vehicle body side 613 and fixed to the vehicle body side 613. The first longitudinal beam 621 can be fixedly connected to both the side wall 6131 and the tower pack 6134, which is beneficial to improving the connection reliability between the tower pack 6134 and the side wall 6131 and to improving the structural stability of the vehicle body side 613.

[0031] The second longitudinal beam 622 can extend along the front-rear direction of the rear body 610, and the second longitudinal beam 622 can be fixedly connected to the bottom of the body 612. Specifically, the second longitudinal beam 622 can be fixedly connected to the bottom of the body 612 by welding, bolting, integral molding, etc., which helps to make the connection between the reinforcing frame 620 and the bottom of the body 612 reliable.

[0032] Multiple support beams 623 can extend vertically along the rear vehicle body 610, and multiple support beams 623 can be arranged at intervals along the front-rear direction of the rear vehicle body 610. Multiple support beams 623 can be connected between the first longitudinal beam 621 and the second longitudinal beam 622. The support beams 623 can be fixedly connected to the first longitudinal beam 621 and the second longitudinal beam 622 by welding, bolting, integral molding, etc.

[0033] By setting a first longitudinal beam 621 fixed to the side 613 of the vehicle body, a second longitudinal beam 622 fixed to the bottom 612 of the vehicle body, and a support beam 623 connecting the first longitudinal beam 621 and the second longitudinal beam 622, the reinforcing frame 620 can stably support the side 613 and the bottom 612 of the vehicle body. On the other hand, in the event of a collision, the load on the side 613 and the bottom 612 of the vehicle body can be efficiently transferred and dispersed through the support beam 623, which helps to further reduce the risk of stress concentration in the rear vehicle body frame 611 and improve the structural strength and collision safety of the rear vehicle body 610.

[0034] In some examples of embodiments of the present invention, such as Figure 1 , Figure 2 , Figure 4 As shown, the multiple support beams 623 may include: a first support beam 6231 and a second support beam 6232. The vehicle side 613 includes a tower pack body 6135. At least a portion of the first support beam 6231 is located on the front side of the tower pack body 6135, and at least a portion of the second support beam 6232 is located on the rear side of the tower pack body 6135.

[0035] Among them, such as Figure 4 As shown, the first longitudinal beam 621 can be located on the upper side of the tower pack body 6135. The tower pack 6134 can include the tower pack body 6135 and the tower pack extension structure 6136. The tower pack extension structure 6136 can be connected between the tower pack body 6135 and the side wall 6131. ​​From top to bottom, the tower pack extension structure 6136 can extend obliquely away from the side wall 6131, which can reserve sufficient installation space for the vehicle's steering motor below the tower pack extension structure 6136. This helps reduce the risk of interference between the tower pack extension structure 6136 and the steering motor, and helps ensure the normal installation and reliable operation of the steering motor.

[0036] like Figure 4As shown, the first support beam 6231 is located on the inner side of the vehicle body side 613. The first support beam 6231 can extend along the vertical direction of the rear vehicle body 610. The upper end of the first support beam 6231 can be fixedly connected to the front end of the first longitudinal beam 621, and the lower end of the first support beam 6231 is fixed to the front end of the second longitudinal beam 622. When the vehicle 900 is impacted, the impact load on the vehicle body side 613 can be efficiently transferred to the bottom of the vehicle body 612 through the first support beam 6231, which is beneficial to improving the impact resistance and structural strength of the vehicle body side 613.

[0037] At least a portion of the first support beam 6231 is located on the front side of the tower body 6135. As one embodiment, a portion of the structure of the first support beam 6231 may be located on the front side of the tower body 6135. As another embodiment, the entire structure of the first support beam 6231 may be located on the front side of the tower body 6135.

[0038] like Figure 4 As shown, from top to bottom, the first support beam 6231 can extend inclinedly away from the side panel 6131, and the first support beam 6231 can extend inclinedly towards the front of the tower pack body 6135, so that the first support beam 6231 can fully avoid the tower pack 6134, which helps to reduce the risk of interference between the first support beam 6231 and the tower pack 6134, and helps to improve the rationality of the structural layout of the first support beam 6231. The first support beam 6231 can be in close contact with the inner surface of the tower pack extension structure 6136, so that the first support beam 6231 can effectively support the tower pack extension structure 6136, which helps to reduce the risk of the tower pack extension structure 6136 denting and deforming towards the inner side of the rear vehicle body 610 when the vehicle 900 collides, and helps to improve the deformation resistance of the tower pack extension structure 6136.

[0039] like Figure 4 As shown, the second support beam 6232 can be located on the inner side of the vehicle body side 613, and at least part of the second support beam 6232 is located on the rear side of the tower body 6135. The second support beam 6232 can extend along the vertical direction of the rear vehicle body 610. The second support beam 6232 can be fixedly connected to the first longitudinal beam 621 and the bottom of the vehicle body 612. When the vehicle 900 is impacted, the impact load on the vehicle body side 613 can be efficiently transferred to the bottom of the vehicle body 612 through the second support beam 6232, which is conducive to further improving the impact resistance and structural strength of the vehicle body side 613.

[0040] At least a portion of the second support beam 6232 is located on the rear side of the tower body 6135. As one embodiment, a portion of the structure of the second support beam 6232 may be located on the rear side of the tower body 6135. As another embodiment, the entire structure of the second support beam 6232 may be located on the rear side of the tower body 6135.

[0041] From top to bottom, the second support beam 6232 can extend inclined away from the side wall 6131, and the second support beam 6232 can extend inclined towards the rear side of the tower body 6135, which helps to reduce the risk of interference between the second support beam 6232 and the tower body 6135, and helps to improve the layout rationality of the second support beam 6232.

[0042] Based on the above, when vehicle 900 is impacted, the impact load on the side 613 of the vehicle body can be transmitted to the bottom 612 of the vehicle body via the first support beam 6231 and the second support beam 6232. This helps reduce the risk of deformation of the side 613 of the vehicle body due to the concentrated load, and also helps improve the overall rigidity of the rear body 610. Furthermore, by placing the first longitudinal beam 621 on the upper side of the tower block body 6135, and at least a portion of the first support beam 6231 on the front side of the tower block body 6135, and at least a portion of the second support beam 6232... Partially located at the rear of the tower pack body 6135, and with the first support beam 6231 and the second support beam 6232 both connected to the first longitudinal beam 621 and the second longitudinal beam 622, the first longitudinal beam 621, the first support beam 6231, the second support beam 6232 and the bottom of the vehicle body 612 together form a frame structure around the tower pack body 6135, which strengthens the protection of the tower pack body 6135, helps reduce the risk of deformation of the tower pack body 6135 when the vehicle 900 is impacted, and helps improve the structural strength of the tower pack body 6135.

[0043] In some examples of embodiments of the present invention, such as Figure 1 As shown, the second longitudinal beam 622 may include: a first longitudinal beam segment 6221 and a second longitudinal beam segment 6222. The bottom of the vehicle body 612 includes a first crossbeam 6121 and a second crossbeam 6122. The first crossbeam 6121 is located on the front side of the second crossbeam 6122. The first longitudinal beam segment 6221 is connected between the first crossbeam 6121 and the second crossbeam 6122. The second longitudinal beam segment 6222 and the second support beam 6232 are located on the rear side of the second crossbeam 6122. The second longitudinal beam segment 6222 is connected between the second support beam 6232 and the second crossbeam 6122.

[0044] Among them, such as Figure 1 As shown, the first longitudinal beam segment 6221 and the second longitudinal beam segment 6222 can be arranged sequentially along the front-rear direction of the rear vehicle body 610, and the first longitudinal beam segment 6221 can be located in front of the second crossbeam 6122. Both the first crossbeam 6121 and the second crossbeam 6122 can be made of metal materials to ensure that the first crossbeam 6121 and the second crossbeam 6122 have sufficient structural strength and rigidity. Specifically, both the first crossbeam 6121 and the second crossbeam 6122 can be made of metal materials such as aluminum alloy and stainless steel.

[0045] The first longitudinal beam segment 6221 is connected between the first crossbeam 6121 and the second crossbeam 6122. Specifically, the first longitudinal beam segment 6221 can be fixedly connected to the first crossbeam 6121 and the second crossbeam 6122 by means of welding, bolting, or integral molding. The second longitudinal beam segment 6222 is connected between the second support beam 6232 and the second crossbeam 6122. Specifically, the second longitudinal beam segment 6222 can be fixedly connected to the second support beam 6232 and the second crossbeam 6122 by means of welding, bolting, or integral molding.

[0046] like Figure 1 As shown, the lower end of the first support beam 6231 can be fixedly connected to the front end of the first longitudinal beam segment 6221. Specifically, the first support beam 6231 can be welded to the first longitudinal beam segment 6221 to ensure a reliable connection between the first support beam 6231 and the first longitudinal beam segment 6221. The lower end of the second support beam 6232 can be connected to the rear end of the second longitudinal beam segment 6222, enabling the first longitudinal beam 621, the first support beam 6231, the second longitudinal beam 622, and the second support beam 6232 to jointly form a force transmission frame extending along the longitudinal direction of the rear vehicle body 610. This force transmission frame can effectively guide the collision energy to be dispersed and transmitted along multiple paths, which helps to reduce the risk of stress concentration in the rear vehicle body 610 and further improves the collision safety of the rear vehicle body 610.

[0047] By dividing the second longitudinal beam 622 into a first longitudinal beam segment 6221 and a second longitudinal beam segment 6222, with the first longitudinal beam segment 6221 connecting between the first crossbeam 6121 and the second crossbeam 6122, and the second longitudinal beam segment 6222 connecting between the second support beam 6232 and the second crossbeam 6122, the load transfer path of the vehicle bottom 612 along the longitudinal direction of the rear vehicle body 610 becomes more continuous, which is beneficial to increasing the load transfer efficiency of the vehicle bottom 612 along the longitudinal direction of the rear vehicle body 610. Simultaneously, connecting the first longitudinal beam segment 6221 between the first crossbeam 6121 and the second crossbeam 6122 reduces the risk of relative movement between the first crossbeam 6121 and the second crossbeam 6122, and connecting the second longitudinal beam segment 6222 between the second support beam 6232 and the second crossbeam 6122 reduces the risk of relative movement between the second support beam 6232 and the second crossbeam 6122, thus improving the structural stability of the rear vehicle body assembly 600.

[0048] In some examples of embodiments of the present invention, such as Figure 1 , Figure 4 As shown, the side part 613 of the vehicle body may include: a side panel 6131, the side panel 6131 includes a C-pillar 6132 and a D-pillar 6133, and the first longitudinal beam 621 is fixedly connected to both the C-pillar 6132 and the D-pillar 6133.

[0049] Among them, such as Figure 1 , Figure 4As shown, the C-pillar 6132 and D-pillar 6133 are arranged sequentially along the front-rear direction of the rear vehicle body 610, with the C-pillar 6132 located in front of the D-pillar 6133. The front end of the first longitudinal beam 621 can be fixedly connected to the C-pillar 6132, and the rear end of the first longitudinal beam 621 can be fixedly connected to the D-pillar 6133. The first longitudinal beam 621 can be welded between the C-pillar 6132 and the D-pillar 6133 to enhance the structural rigidity of the side panel 6131.

[0050] By setting the first longitudinal beam 621 to be fixedly connected to the tower 6134, C-pillar 6132, and D-pillar 6133, when the vehicle 900 vibrates or collides, the tower 6134, C-pillar 6132, and D-pillar 6133 can transfer the load to each other through the first longitudinal beam 621, effectively dispersing the impact energy. This helps reduce the risk of stress concentration in the tower 6134, C-pillar 6132, and D-pillar 6133, improves the deformation resistance of the vehicle body side 613, and further enhances the impact resistance and structural stability of the vehicle body side 613.

[0051] In some examples of embodiments of the present invention, such as Figure 1 As shown, the rear body assembly 600 may further include: two reinforcing longitudinal beams 630, which are located below and fixed to the bottom of the body 612. The two reinforcing longitudinal beams 630 are opposite to each other and spaced apart in the left-right direction of the rear body 610. The rear body 610 has a rear energy-absorbing structure 660 located behind the reinforcing longitudinal beams 630, and the rear end of the reinforcing longitudinal beams 630 is fixedly connected to the rear energy-absorbing structure 660.

[0052] Among them, such as Figure 1 As shown, the bottom of the vehicle body 612 may include a third crossbeam 6123, which extends along the left-right direction of the rear vehicle body 610. The first crossbeam 6121, the third crossbeam 6123, and the second crossbeam 6122 are arranged sequentially along the front-rear direction of the rear vehicle body 610. The front end of the reinforcing longitudinal beam 630 can be connected to the third crossbeam 6123. As an example, the front end of the reinforcing longitudinal beam 630 can be fixedly connected to the third crossbeam 6123 via a connector. For example, the connector may include a first plate and a second plate, which are fixedly connected and arranged at an angle. The first plate can be fixedly connected to the third crossbeam 6123, and the second plate can be fixedly connected to the reinforcing longitudinal beam 630, so that the reinforcing longitudinal beam 630 and the third crossbeam 6123 are reliably connected via the connector. The rear energy-absorbing structure 660 can be an energy-absorbing box. The reinforcing longitudinal beam 630 is fixedly connected to the rear energy-absorbing structure 660. Specifically, the reinforcing longitudinal beam 630 can be fixedly connected to the rear energy-absorbing structure 660 by means of bolt connection, welding, or integral molding. The rear energy-absorbing structure 660 and the reinforcing longitudinal beam 630 can be set one-to-one.

[0053] This embodiment of the application, by setting up reinforcing longitudinal beams 630 that are fixedly connected to both the rear energy-absorbing structure 660 and the bottom of the vehicle body 612, allows the rear energy-absorbing structure 660 to absorb the collision energy first when the rear of the vehicle 900 is impacted. The remaining collision energy can then be transferred to the bottom of the vehicle body 612 via the reinforcing longitudinal beams 630. This helps to further reduce the risk of deformation of the rear body 610 and further improve the collision safety of the vehicle 900. At the same time, setting up multiple reinforcing longitudinal beams 630 that are opposite to each other and spaced apart along the left and right directions of the rear body 610 can effectively improve the load transfer efficiency and further reduce the risk of stress concentration in the rear body 610.

[0054] In some examples of embodiments of the present invention, such as Figure 1 , Figure 3 As shown, the reinforcing longitudinal beam 630 may include: a front longitudinal beam section 631, a middle longitudinal beam section 632, and a rear longitudinal beam section 633. The middle longitudinal beam section 632 connects the front longitudinal beam section 631 and the rear longitudinal beam section 633. From front to back, the front longitudinal beam section 631 is inclined toward the other reinforcing longitudinal beam 630, the middle longitudinal beam section 632 extends in a straight line along the front-rear direction of the rear vehicle body 610, and the rear longitudinal beam section 633 is inclined away from the other reinforcing longitudinal beam 630.

[0055] The front longitudinal beam segment 631 and the middle longitudinal beam segment 632 are directly or indirectly connected, and the middle longitudinal beam segment 632 and the rear longitudinal beam segment 633 are directly or indirectly connected. As one embodiment, the rear end of the front longitudinal beam segment 631 and the front end of the middle longitudinal beam segment 632 can be directly connected by welding, bolting, or integral molding. As another embodiment, the front end of the front longitudinal beam segment 631 can be fixedly connected to the third crossbeam 6123, the rear end of the front longitudinal beam segment 631 can be fixedly connected to the second crossbeam 6122, and the front end of the middle longitudinal beam segment 632 can be fixedly connected to the second crossbeam 6122, so that the front longitudinal beam segment 631 and the middle longitudinal beam segment 632 achieve a transitional connection through the second crossbeam 6122, thereby improving the connection reliability between the reinforcing longitudinal beam 630 and the vehicle body bottom 612.

[0056] As one embodiment, the rear end of the middle longitudinal beam segment 632 can be fixedly connected to the front end of the rear longitudinal beam segment 633 by means of welding, bolting, or integral molding. As another embodiment, the bottom of the vehicle body 612 may also include a fourth crossbeam 6124. Along the front-rear direction of the rear vehicle body 610, the fourth crossbeam 6124 can be located behind the second crossbeam 6122. The rear end of the middle longitudinal beam segment 632 can be fixedly connected to the fourth crossbeam 6124, and the front end of the rear longitudinal beam segment 633 can be fixedly connected to the fourth crossbeam 6124, so that the middle longitudinal beam segment 632 and the rear longitudinal beam segment 633 can be transitionally connected through the fourth crossbeam 6124, thereby improving the connection reliability between the reinforcing longitudinal beam 630 and the bottom of the vehicle body 612.

[0057] By setting the direction from front to back, the front longitudinal beam segment 631 extends inclinedly to the inside of the rear vehicle body 610, while the rear longitudinal beam segment 633 extends in a straight line and extends inclinedly to the outside of the rear vehicle body 610. The reinforcing longitudinal beam 630 can be arranged around the lower edge of the tower pack 6134, which helps to reduce the risk of interference between the reinforcing longitudinal beam 630 and the structure below the tower pack 6134, and helps to optimize the structural layout of the reinforcing longitudinal beam 630.

[0058] In some examples of embodiments of the present invention, such as Figure 2 , Figure 3 As shown, the rear body assembly 600 may further include: a bottom frame structure 640, which is located below and fixed to the bottom of the body 612. The bottom frame structure 640 includes: a frame body 641 and a reinforcing structure 642. The frame body 641 includes two frame longitudinal beams 6411 and two frame transverse beams 6412. The two frame longitudinal beams 6411 are opposite to each other and spaced apart in the left-right direction of the rear body 610. The two frame transverse beams 6412 are connected between the two frame longitudinal beams 6411 and spaced apart in the front-rear direction of the rear body 610. The reinforcing structure 642 is located between the two frame transverse beams 6412 and fixed to the frame body 641; and a lower control arm mounting bracket 650, which is fixed to the frame body 641 and the reinforcing structure 642.

[0059] The bottom frame structure 640 is located below the bottom of the vehicle body 612 and can be fixedly connected to the bottom of the vehicle body 612, which helps to improve the rigidity of the rear body assembly 600. Specifically, the bottom frame structure 640 and the bottom of the vehicle body 612 can be fixedly connected by welding, bolting, or integral molding. The frame longitudinal beams 6411 and frame cross beams 6412 can both be made of metal materials, which can improve the strength and rigidity of the frame longitudinal beams 6411 and frame cross beams 6412. Specifically, the frame longitudinal beams 6411 and frame cross beams 6412 can both be made of metal materials such as aluminum alloy and steel.

[0060] The frame body 641 may include two frame longitudinal beams 6411 and two frame transverse beams 6412. The reinforcing structure 642 may be fixed to the frame body 641. As one embodiment, the reinforcing structure 642 may be fixedly connected to both frame transverse beams 6412. As another embodiment, the reinforcing structure 642 may be fixedly connected to both frame longitudinal beams 6411. As yet another embodiment, the reinforcing structure 642 may be fixedly connected to at least one frame transverse beam 6412 and at least one frame longitudinal beam 6411.

[0061] like Figure 3As shown, both frame longitudinal beams 6411 can extend along the longitudinal direction of the rear vehicle body 610. As an example, both frame longitudinal beams 6411 can extend obliquely along the longitudinal direction of the rear vehicle body 610. As another example, both frame longitudinal beams 6411 can extend in a straight line along the longitudinal direction of the rear vehicle body 610. As yet another example, one frame longitudinal beam 6411 can extend in a straight line along the longitudinal direction of the rear vehicle body 610, and the other frame longitudinal beam 6411 can extend obliquely along the longitudinal direction of the rear vehicle body 610.

[0062] like Figure 4 As shown, both frame beams 6412 can extend along the left and right directions of the rear vehicle body 610. In one embodiment, both frame beams 6412 can extend obliquely along the left and right directions of the rear vehicle body 610. In another embodiment, both frame beams 6412 can extend linearly along the left and right directions of the rear vehicle body 610. In yet another embodiment, one frame beam 6412 can extend linearly along the left and right directions of the rear vehicle body 610, and the other frame beam 6412 can extend obliquely along the left and right directions of the rear vehicle body 610.

[0063] As can be seen from the above, both frame longitudinal beams 6411 extend along the front-rear direction of the rear vehicle body 610, and both frame transverse beams 6412 extend along the left-right direction of the rear vehicle body 610. The two frame transverse beams 6412 are connected between the two frame longitudinal beams 6411, so that the two frame transverse beams 6412 and the two frame longitudinal beams 6411 together form the frame body 641. The structure of the frame body 641 is regular, which is conducive to improving the load transfer efficiency and overall structural rigidity of the frame body 641.

[0064] like Figure 4 As shown, the reinforcing structure 642 may include two reinforcing beams 6421, which are arranged crosswise and fixedly connected. The ends of the reinforcing beams 6421 extend to the connection points of the corresponding frame longitudinal beams 6411 and frame transverse beams 6412 and are fixedly connected to at least one of the corresponding frame longitudinal beams 6411 and frame transverse beams 6412. This can form a cross-support system between the two frame transverse beams 6412, so that the two reinforcing beams 6421 can support and constrain the frame body 641, which helps to reduce the risk of deformation of the frame body 641 and improve the overall structural stiffness of the bottom frame structure 640.

[0065] Both reinforcing beams 6421 can extend obliquely along the front-rear direction of the rear body 610. The front end of the reinforcing beam 6421 can extend to the connection between the front side frame crossbeam 6412 and the corresponding side frame longitudinal beam 6411, and the rear end of the reinforcing beam 6421 can extend to the connection between the rear side frame crossbeam 6412 and the corresponding side frame longitudinal beam 6411. This allows the two reinforcing beams 6421 to form diagonal constraints and supports on the frame body 641 inside the frame body 641, which is beneficial to optimizing the load transfer path of the rear body assembly 600 and further improving the structural rigidity of the rear body assembly 600.

[0066] Vehicle 900 may include a suspension system, which may include a lower control arm. The lower control arm of the suspension system may be mounted on a lower control arm mounting bracket 650. The lower control arm mounting bracket 650 is fixed to the frame body 641. Specifically, the lower control arm mounting bracket 650 may be fixedly connected to the frame body 641 by means of bolt connection, welding, integral molding, etc.

[0067] The lower control arm mounting bracket 650 can be fixed to at least one of the corresponding frame longitudinal beam 6411 and the corresponding frame cross beam 6412. The lower control arm mounting bracket 650 corresponding to the rear frame cross beam 6412 can be located below the bottom frame structure 640, and at least a portion of the lower control arm mounting bracket 650 corresponding to the front frame cross beam 6412 can be located on the outside of the corresponding side frame longitudinal beam 6411. This can make full use of the space on the lower side of the bottom frame structure 640 and the outer side of the frame longitudinal beam 6411, improve the space utilization of the rear body assembly 600, and help reduce the probability of interference between the lower control arm mounting bracket 650 and other internal structures of the vehicle 900.

[0068] The lower control arm mounting bracket 650 can be fixedly connected to the reinforcing structure 642. The lower control arm mounting bracket 650 can be fixedly connected to the reinforcing structure 642 by welding, bolting, riveting, etc., which helps to improve the connection strength between the lower control arm mounting bracket 650 and the reinforcing structure 642.

[0069] In this embodiment, the reinforcing structure 642 is disposed between the two frame beams 6412 and fixed to the frame body 641. The reinforcing structure 642 can effectively support the frame body 641 between the two frame beams 6412, which helps reduce the deformation risk of the frame body 641, thereby improving the overall rigidity and deformation resistance of the bottom frame structure 640. The lower control arm mounting bracket 650 is fixed to the frame body 641 and the reinforcing structure 642. When the vehicle 900 is impacted, the lower control arm mounting bracket 650 can efficiently transfer the load to the reinforcing structure 642 and the frame body 641, which helps reduce the stress concentration risk of the lower control arm mounting bracket 650 and improves the structural strength of the lower control arm mounting bracket 650. At the same time, the reinforcing structure 642 is also fixedly connected to the frame body 641, so that the reinforcing structure 642 and the frame body 641 can work together to bear the impact load, thereby improving the overall rigidity and impact resistance of the rear body assembly 600.

[0070] In some examples of embodiments of the present invention, such as Figure 2 As shown, the bottom frame structure 640 is located below the reinforcing longitudinal beam 630 and is fixed to the reinforcing longitudinal beam 630; and / or the connection between the frame crossbeam 6412 and the frame longitudinal beam 6411 is provided with a lower swing arm mounting bracket 650, which is fixed to the reinforcing structure 642.

[0071] In one embodiment, the rear body 610 may include a connecting structure 670. The connecting structure 670 can be connected between the reinforcing longitudinal beam 630 and the bottom frame structure 640, and can be fixedly connected to the second crossbeam 6122. Under vehicle driving and collision conditions, the load can be transferred and distributed among the vehicle bottom 612, the reinforcing longitudinal beam 630, and the bottom frame structure 640, which helps to improve the structural rigidity of the rear body assembly 600. The connecting structure 670 can be a connecting plate, connecting beam, or other similar structures.

[0072] As one example, the bottom frame structure 640 can be located below and fixed to the reinforcing longitudinal beam 630. As another example, a lower control arm mounting bracket 650 can be correspondingly provided at the connection between the frame crossbeam 6412 and the frame longitudinal beam 6411, and the lower control arm mounting bracket 650 is fixed to the reinforcing structure 642. As yet another example, the bottom frame structure 640 can be located below and fixed to the reinforcing longitudinal beam 630, and a lower control arm mounting bracket 650 can correspondingly be provided at the connection between the frame crossbeam 6412 and the frame longitudinal beam 6411, and the lower control arm mounting bracket 650 is fixed to the reinforcing structure 642.

[0073] Two frame crossbeams 6412 are connected to two frame longitudinal beams 6411 respectively to form four connection nodes. Each connection node can be provided with a lower control arm mounting bracket 650, that is, the rear body assembly 600 can be provided with multiple lower control arm mounting brackets 650. The rear body assembly 600 can be provided with two, three, four or other numbers of lower control arm mounting brackets 650. In this embodiment of the application, the rear body assembly 600 is provided with four lower control arm mounting brackets 650 as an example for explanation.

[0074] The connection between the frame crossbeam 6412 and the frame longitudinal beam 6411 is the location with the highest structural strength of the frame body 641. Placing the lower control arm mounting bracket 650 at this location allows the lower control arm mounting bracket 650 to efficiently transfer the load to the frame crossbeam 6412 and the frame longitudinal beam 6411 when the vehicle 900 is impacted. This helps reduce the risk of stress concentration in the lower control arm mounting bracket 650, improves the structural strength of the lower control arm mounting bracket 650, and enhances the connection reliability between the suspension system and the lower control arm mounting bracket 650. Ultimately, this improves the driving stability and handling safety of the vehicle 900.

[0075] According to a second aspect of the present invention, a vehicle 900 includes the rear body assembly 600 of the above embodiments.

[0076] According to the embodiments of this application, the vehicle 900 using the rear body component 600 in the above embodiments is beneficial to improving the rigidity and deformation resistance of the vehicle 900, improving the driving stability and handling safety of the vehicle 900, and improving the impact resistance and durability of the vehicle 900.

[0077] The rear body assembly 600 and other components and operations of the vehicle 900 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0078] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0079] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear vehicle body assembly, characterized in that, include: The rear body (610) includes a rear body frame (611), the rear body frame (611) includes a body bottom (612) and two body sides (613), the two body sides (613) are opposite to each other and spaced apart in the left and right direction of the rear body (610), and the body bottom (612) is connected between the two body sides (613); A reinforcing frame (620) is provided between two of the vehicle body sides (613), and at least one of the vehicle body sides (613) is fixed with the reinforcing frame (620), and the reinforcing frame (620) is fixed to the bottom of the vehicle body (612). The side of the vehicle body (613) includes a tower pack body (6135), and the reinforcing frame (620) is arranged around the tower pack body (6135) on the corresponding side. The reinforcing frame (620) includes: a first longitudinal beam (621) fixed to the side of the vehicle body (613), a second longitudinal beam (622) fixed to the bottom of the vehicle body (612), and a support beam (623). The first longitudinal beam (621) is set at a height higher than the tower pack body (6135). The support beam (623) extends along the vertical direction of the rear vehicle body (610) and connects the first longitudinal beam (621) and the second longitudinal beam (622).

2. The rear vehicle assembly according to claim 1, characterized in that, The reinforcing frame (620) includes a plurality of support beams (623), which are arranged along the front-rear direction of the rear vehicle body (610) and are all connected between the first longitudinal beam (621) and the second longitudinal beam (622).

3. The rear vehicle assembly according to claim 2, characterized in that, The plurality of support beams (623) include: a first support beam (6231) and a second support beam (6232), at least a portion of the first support beam (6231) being located on the front side of the tower body (6135) and at least a portion of the second support beam (6232) being located on the rear side of the tower body (6135).

4. The rear vehicle assembly according to claim 3, characterized in that, The second longitudinal beam (622) includes a first longitudinal beam segment (6221) and a second longitudinal beam segment (6222). The bottom of the vehicle body (612) includes a first crossbeam (6121) and a second crossbeam (6122). The first crossbeam (6121) is located on the front side of the second crossbeam (6122). The first longitudinal beam segment (6221) is connected between the first crossbeam (6121) and the second crossbeam (6122). The second longitudinal beam segment (6222) and the second support beam (6232) are located on the rear side of the second crossbeam (6122). The second longitudinal beam segment (6222) is connected between the second support beam (6232) and the second crossbeam (6122).

5. The rear vehicle assembly according to claim 2, characterized in that, The vehicle body side (613) includes a side panel (6131), which includes a C-pillar (6132) and a D-pillar (6133). The first longitudinal beam (621) is fixedly connected to both the C-pillar (6132) and the D-pillar (6133).

6. The rear body assembly (600) according to any one of claims 1-5, characterized in that, The rear body assembly (600) further includes: two reinforcing longitudinal beams (630), which are located below and fixed to the bottom of the body (612). The two reinforcing longitudinal beams (630) are opposite to each other and spaced apart along the left and right directions of the rear body (610). The rear body (610) has a rear energy-absorbing structure (660) located behind the reinforcing longitudinal beams (630), and the rear end of the reinforcing longitudinal beams (630) is fixedly connected to the rear energy-absorbing structure (660).

7. The rear vehicle assembly according to claim 6, characterized in that, The reinforcing longitudinal beam (630) includes a front longitudinal beam section (631), a middle longitudinal beam section (632), and a rear longitudinal beam section (633). The middle longitudinal beam section (632) connects the front longitudinal beam section (631) and the rear longitudinal beam section (633). From front to back, the front longitudinal beam section (631) is inclined toward the other reinforcing longitudinal beam (630), the middle longitudinal beam section (632) extends in a straight line along the front-rear direction of the rear vehicle body (610), and the rear longitudinal beam section (633) is inclined away from the other reinforcing longitudinal beam (630).

8. The rear vehicle assembly according to claim 6, characterized in that, The rear body assembly (600) further includes: a bottom frame structure (640), which is located below and fixed to the bottom of the body (612). The bottom frame structure (640) includes: a frame body (641) and a reinforcing structure (642). The frame body (641) includes two frame longitudinal beams (6411) and two frame transverse beams (6412). The two frame longitudinal beams (6411) are opposite to each other and spaced apart along the left-right direction of the rear body (610). The two frame transverse beams (6412) are connected between the two frame longitudinal beams (6411) and spaced apart along the front-rear direction of the rear body (610). The reinforcing structure (642) is located between the two frame transverse beams (6412) and fixed to the frame body (641). The lower control arm mounting bracket (650) is fixed to the frame body (641) and the reinforcing structure (642).

9. The rear vehicle assembly according to claim 8, characterized in that, The bottom frame structure (640) is located below and fixed to the reinforcing longitudinal beam (630); and / or The lower swing arm mounting bracket (650) is provided at the connection between the frame crossbeam (6412) and the frame longitudinal beam (6411), and the lower swing arm mounting bracket (650) is fixed to the reinforcing structure (642).

10. A vehicle, characterized in that, Includes the rear body assembly (600) according to any one of claims 1-9.

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