Vehicle rear floor assembly and vehicle

Abstract

The utility model discloses a vehicle rear floor assembly and a vehicle. The vehicle rear floor assembly is an integrated die casting, the vehicle rear floor assembly comprises a rear floor part and rear longitudinal beam parts located on the two sides of the rear floor part, and in the X direction of a vehicle, each rear longitudinal beam part comprises a longitudinal beam middle section and a longitudinal beam front section connected with the longitudinal beam middle section; wherein the longitudinal beam middle section comprises a first surface facing the lower portion of the vehicle, the longitudinal beam front section comprises a second surface facing the rear portion of the vehicle, the first surface and the second surface are used for defining a containing space, the containing space is used for containing a rear drive assembly of the vehicle, and the angle formed between the first surface and the second surface ranges from 90 degrees to 125 degrees. Therefore, the range of the angle formed between the first surface and the second surface is 90-125 degrees, so that the arched height of the vehicle rear floor assembly is appropriate, the space of the containing space is large and enough for containing a rear drive assembly, the vehicle rear floor assembly can be easily subjected to mold drawing to form the containing space during casting, and the manufacturing difficulty is low.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a vehicle rear floor assembly and a vehicle. Background Art

[0002] In some three-row vehicles (including sedans, SUVs, MPVs, etc.) in the related art, the rear seats of the vehicle are arranged on the rear floor assembly of the vehicle, and the rear floor assembly of the vehicle is arched upward to form a storage space for accommodating the rear drive assembly of the vehicle under the rear floor assembly of the vehicle. The size of the storage space is closely related to the structure of the arch. If the height of the arch is large, it is difficult to manufacture. If the height of the arch is small, it is difficult for the storage space to accommodate the rear drive assembly. Therefore, how to design the rear floor assembly of the vehicle to meet the assembly of the rear drive assembly and make the rear floor assembly of the vehicle easy to manufacture has become a technical problem to be solved. Utility Model Content

[0003] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, the present application proposes a vehicle rear floor assembly and a vehicle.

[0004] The vehicle rear floor assembly of the embodiment of the present application is an integrated die-casting, and the vehicle rear floor assembly is an integrated die-casting, and the vehicle rear floor assembly includes a rear floor portion and rear longitudinal beam portions located on both sides of the rear floor portion, and along the longitudinal direction of the vehicle, the rear longitudinal beam portion includes a longitudinal beam middle section and a longitudinal beam front section connected to the longitudinal beam middle section, the longitudinal beam middle section is located in the middle part of the rear floor portion, and the longitudinal beam front section is located in the front side of the floor portion and is inclined relative to the longitudinal beam middle section;

[0005] The longitudinal beam middle section includes a first surface facing the bottom of the vehicle, the longitudinal beam front section includes a second surface facing the rear of the vehicle, the first surface and the second surface are used to enclose a receiving space, the receiving space is used to receive the rear drive assembly of the vehicle, and the angle formed between the first surface and the second surface is in the range of 90°-125°

[0006] In this way, the angle formed between the first surface and the second surface ranges from 90° to 125°, so that the height of the arch of the rear floor assembly of the vehicle is appropriate, thereby making the accommodating space larger, sufficient to accommodate the rear drive assembly, and also making it easy to demold the rear floor assembly of the vehicle during casting to form an accommodating space, and the manufacturing difficulty is relatively low.

[0007] In certain embodiments, the angle formed between the first surface and the second surface is 100°±5°.

[0008] In certain embodiments, the rear longitudinal beam portion further includes a longitudinal beam rear section, the longitudinal beam rear section is located at a rear edge of the rear floor portion, and the longitudinal beam rear section is offset toward the outside of the vehicle along the transverse direction of the vehicle relative to the longitudinal beam middle section.

[0009] In certain embodiments, along the lateral direction of the vehicle, the surface difference value of the middle section of the longitudinal beam and the rear section of the longitudinal beam on the same side is L, 0<L≤260mm.

[0010] In some embodiments, the rear longitudinal beam portion also includes a longitudinal beam transition section, which extends obliquely from the middle section of the longitudinal beam to the rear section of the longitudinal beam, and the longitudinal beam transition section includes a third surface opposite to the second surface, and the first surface, the second surface and the third surface are used to jointly enclose the accommodating space.

[0011] In some embodiments, a middle portion of the rear floor portion is arched upward to form an arched portion, and the longitudinal beam middle section is connected to the arched portion.

[0012] In some embodiments, the rear longitudinal beam portion includes a first inner surface, a first lower surface and a side surface, the first inner surface is located inside the vehicle cabin, the first lower surface is located outside the vehicle cabin, the side surface connects the first inner surface and the first lower surface, the first inner surface, the first lower surface and the side surface are all provided with longitudinal beam reinforcement ribs, and the first lower surface includes the first surface and the second surface.

[0013] In some embodiments, the first inner surface includes an inner top surface facing upward of the vehicle and an inner side surface connected to the inner top surface, the longitudinal beam reinforcement rib includes a first longitudinal beam reinforcement rib arranged on the inner top surface and a second longitudinal beam reinforcement rib arranged on the inner side surface, and the second longitudinal beam reinforcement rib extends upward from the rear floor portion.

[0014] In some embodiments, the longitudinal beam reinforcement ribs include a plurality of third longitudinal beam reinforcement ribs disposed on the side surface, and some of the third longitudinal beam reinforcement ribs are disposed to intersect with each other; and / or,

[0015] The longitudinal beam reinforcement ribs include a plurality of fourth longitudinal beam reinforcement ribs arranged on the first lower surface, and some of the fourth longitudinal beam reinforcement ribs are arranged to intersect; and / or,

[0016] The rear floor portion includes a second inner surface and a second lower surface, the second inner surface is located in the cabin of the vehicle, the second lower surface is located outside the cabin of the vehicle, the second inner surface is provided with a first floor reinforcement rib, and the second lower surface is provided with a second floor reinforcement rib.

[0017] The vehicle according to the embodiment of the present application includes the vehicle rear floor assembly described in any one of the above embodiments.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a three-dimensional schematic diagram of a vehicle according to an embodiment of the present application;

[0020] Figure 2 is a three-dimensional schematic diagram of a vehicle rear floor assembly according to an embodiment of the present application;

[0021] Figure 3 is a schematic top view of a vehicle rear floor assembly according to an embodiment of the present application;

[0022] Figure 4 is a schematic side view of a vehicle rear floor assembly according to an embodiment of the present application;

[0023] Figure 5 It is a bottom view schematic diagram of a vehicle rear floor assembly according to an embodiment of the present application.

[0024] Reference numerals:

[0025] 100-vehicle rear floor assembly, 11-first inner surface, 111-inner top surface, 112-inner side surface, 12-first lower surface, 121-first surface, 122-second surface, 123-third surface, 13-side surface, 14-longitudinal beam reinforcement ribs, 141-first longitudinal beam reinforcement ribs, 142-second longitudinal beam reinforcement ribs, 143-third longitudinal beam reinforcement ribs, 144-fourth longitudinal beam reinforcement ribs, 15-rear floor portion, 151-arched portion, 152-second inner surface, 153-second lower surface, 154-first floor reinforcement ribs, 155-second floor reinforcement ribs, 16-rear longitudinal beam portion, 161-longitudinal beam middle section, 162-longitudinal beam rear section, 163-longitudinal beam transition section, 164-longitudinal beam front section, 1000-vehicle. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below, and 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 to be used to explain the present application, and should not be construed as limiting the present application.

[0027] In the description of the present application, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] See also Figure 1 and Figure 2 The vehicle rear floor assembly 100 of the embodiment of the present application is used for the vehicle 1000, or in other words, the vehicle 1000 includes the vehicle rear floor assembly 100, the vehicle rear floor assembly 100 is an integral die-casting, the vehicle rear floor assembly 100 includes a rear floor portion 15 and rear longitudinal beam portions 16 located on both sides of the rear floor portion 15, the rear longitudinal beam portion 16 includes a first inner surface 11, a first lower surface 12 and a side surface 13, the first inner surface 11 is located in the cabin of the vehicle 1000, the first lower surface 12 is located outside the cabin of the vehicle 1000, the side surface 13 connects the first inner surface 11 and the first lower surface 12, and the first inner surface 11, the first inner surface 11 and the side surface 13 are all provided with longitudinal beam reinforcement ribs 14.

[0029] In the vehicle rear floor assembly 100 of the embodiment of the present application, longitudinal beam reinforcement ribs 14 are provided on the first inner surface 11, the first lower surface 12 and the side surface 13 of the rear longitudinal beam portion 16, so that the rear longitudinal beam portion 16 can be reinforced on multiple surfaces of the rear longitudinal beam portion 16, thereby improving the bending resistance of the vehicle rear floor assembly 100 and reducing the risk of large deformation of the vehicle rear floor assembly 100 when subjected to impact forces such as high-speed collisions.

[0030] Specifically, the vehicle rear floor assembly 100 is an integral die-casting. This eliminates the need to form each structure of the vehicle rear floor assembly 100 separately and then weld them, which helps reduce the number of parts of the vehicle rear floor assembly 100 and saves the process of assembling parts, thereby helping to improve production efficiency. The integral die-casting structure also helps to achieve better overall performance consistency of the vehicle rear floor assembly 100, while also helping to reduce the weight of the vehicle rear floor assembly 100, thereby contributing to the lightweighting of the entire vehicle.

[0031] In addition, the vehicle rear floor assembly 100 of the integral die-cast structure has greater strength and rigidity than a conventional cage-type welded vehicle body structure with a C-ring, and the rigidity of the vehicle rear floor assembly 100 can be ensured without adding a C-ring near the rear shock absorber or adding a cross beam to the front and rear cross beams of the rear subframe, thereby helping to reduce the space occupied by the vehicle rear floor assembly 100 along the longitudinal direction X and the transverse direction Y of the vehicle 1000.

[0032] In some embodiments, the vehicle rear floor assembly 100 can be formed by vacuum high pressure die casting. For example, the vehicle rear floor assembly 100 can be an aluminum alloy die casting part, and the vehicle rear floor assembly 100 made of aluminum alloy can effectively reduce the weight of the structure and improve the strength and rigidity of the structure.

[0033] The first inner surface 11 of the rear longitudinal beam portion 16 is located in the cabin of the vehicle 1000. The first inner surface 11 of the rear longitudinal beam portion 16 may be an irregular surface. The first inner surface 11 of the rear longitudinal beam portion 16 may include multiple surfaces, and the shapes of the surfaces are different. Similarly, the first lower surface 12 of the rear longitudinal beam portion 16 is a surface located outside the cabin of the vehicle 1000 and opposite to the first inner surface 11. The first lower surface 12 may include multiple surfaces of different shapes. The side surface 13 of the rear longitudinal beam portion 16 is a surface located along the lateral direction Y of the vehicle 1000. The side surface 13 may also include multiple surfaces of different shapes.

[0034] A single longitudinal beam reinforcement rib 14 is in a strip shape, such as a straight strip shape, a curved strip shape, etc. A plurality of longitudinal beam reinforcement ribs 14 can be connected to form different shapes, such as a cross-shaped shape, a field-shaped shape, etc. It can be understood that the longitudinal beam reinforcement rib 14 can improve the strength of the surface corresponding to the vehicle rear floor assembly 100. Therefore, the longitudinal beam reinforcement rib 14 is arranged on multiple surfaces of the vehicle rear floor assembly 100, so that the strength of the vehicle rear floor assembly 100 can be comprehensively strengthened.

[0035] See also Figure 2 and Figure 3 In some embodiments, the first inner surface 11 includes an inner top surface 111 facing upward of the vehicle, and the longitudinal beam reinforcement rib 14 includes a first longitudinal beam reinforcement rib 141 disposed on the inner top surface 111. Specifically, the inner top surface 111 is a surface located in the cabin of the vehicle 1000 and facing upward, and the area of ​​the inner top surface 111 of the rear longitudinal beam portion 16 is larger than that of other surfaces. The first longitudinal beam reinforcement rib 141 is disposed on the inner top surface 111 of the vehicle rear floor assembly 100, so that the strength of the vehicle rear floor assembly 100 can be improved.

[0036] See also Figure 2 and Figure 3 In some embodiments, the number of the first longitudinal beam reinforcement ribs 141 is multiple, and some of the first longitudinal beam reinforcement ribs 141 are arranged radially. In this way, some of the first longitudinal beam reinforcement ribs 141 are arranged radially, which can improve the bending strength of the rear longitudinal beam portion 16 and the vehicle rear floor assembly 100.

[0037] In the embodiment of the present application, a plurality of first longitudinal beam reinforcement ribs 141 are arranged at different positions of the inner top surface 111 of the rear longitudinal beam portion 16 , thereby reinforcing different positions of the vehicle rear floor assembly 100 , thereby improving the overall strength of the vehicle rear floor assembly 100 .

[0038] See also Figure 2 In some embodiments, the first inner surface 11 includes an inner side surface 112 connected to the inner top surface 111 , and the longitudinal beam reinforcement rib 14 includes a second longitudinal beam reinforcement rib 142 disposed on the inner side surface 112 , and the second longitudinal beam reinforcement rib 142 extends upward from the rear floor portion 15 .

[0039] Specifically, the inner side surface 112 may be perpendicular to the inner top surface 111, and the inner side surface 112 may face the lateral direction (Y direction) of the vehicle 1000. The number of the second longitudinal beam reinforcement ribs 142 may be multiple, and the multiple second longitudinal beam reinforcement ribs 142 may be arranged at intervals. The shapes and / or structures of the multiple second longitudinal beam reinforcement ribs 142 may be the same or different.

[0040] Generally, during the die-casting manufacturing process of the vehicle rear floor assembly 100, stress is concentrated at the connection of two parts with different structures in the vehicle rear floor assembly 100, making the strength of the connection of the two parts relatively weak. The inner side surface 112 of the rear longitudinal beam portion 16 is provided with a second longitudinal beam reinforcement rib 142, and the second longitudinal beam reinforcement rib 142 extends upward from the rear floor portion 15, that is, the second longitudinal beam reinforcement rib 142 is connected to the connection of the rear longitudinal beam portion 16 and the rear floor portion 15, so that the strength of the connection of the rear longitudinal beam portion 16 and the rear floor portion 15 can be strengthened.

[0041] In this way, the second longitudinal beam reinforcement rib 142 can strengthen the strength of the vehicle rear floor assembly 100 at a location corresponding to the inner side surface 112 .

[0042] See also Figure 4 In some embodiments, the longitudinal beam reinforcement ribs 14 include a plurality of third longitudinal beam reinforcement ribs 143 disposed on the side surface 13, and some of the third longitudinal beam reinforcement ribs 143 are disposed to intersect. Some of the third longitudinal beam reinforcement ribs 143 are disposed to intersect, and one end of at least two third longitudinal beam reinforcement ribs 143 may be directly connected, or the extension directions of at least two third longitudinal beam reinforcement ribs 143 may intersect.

[0043] In this way, some of the third longitudinal beam reinforcement ribs 143 intersect on the side surface 13 , so that the vehicle rear floor assembly 100 can be reinforced in multiple directions, thereby improving the strength of the vehicle rear floor assembly 100 .

[0044] See also Figure 5In some embodiments, the longitudinal beam reinforcement ribs 14 include a plurality of fourth longitudinal beam reinforcement ribs 144 disposed on the first lower surface 12 , and some of the fourth longitudinal beam reinforcement ribs 144 are arranged to intersect with each other.

[0045] In this way, the fourth longitudinal beam reinforcement rib 144 can reinforce the rear floor portion 15 and the rear longitudinal beam portion 16 at the same time, thereby improving the overall strength of the vehicle rear floor assembly 100 .

[0046] Specifically, the number of the fourth longitudinal beam reinforcement ribs 144 can be multiple, and the multiple fourth longitudinal beam reinforcement ribs 144 can extend in different directions. For example, some of the fourth longitudinal beam reinforcement ribs 144 extend along the Y direction of the vehicle 1000, some of the fourth longitudinal beam reinforcement ribs 144 extend along the X direction of the vehicle 1000, and some of the fourth longitudinal beam reinforcement ribs 144 can extend along the Z direction of the vehicle 1000. The fourth longitudinal beam reinforcement ribs 144 can be linear or curved, and the present application does not limit the shape of the fourth longitudinal beam reinforcement ribs 144.

[0047] See also Figure 2 and Figure 3 In some embodiments, the rear floor portion 15 includes a second inner surface 152 and a second lower surface 153, the second inner surface 152 is located inside the cabin of the vehicle 1000, the second lower surface 153 is located outside the cabin of the vehicle 1000, the second inner surface 152 is provided with a first floor reinforcement rib 154, and the second lower surface 153 is provided with a second floor reinforcement rib 155.

[0048] In this way, the first floor reinforcement rib 154 and the second floor reinforcement rib 155 are respectively provided on the second inner surface 152 and the second lower surface 153 of the rear floor portion 15, so that the rear floor portion 15 can be reinforced on multiple surfaces of the rear floor portion 15, thereby improving the bending resistance of the vehicle rear floor assembly 100 and reducing the risk of large deformation of the vehicle rear floor assembly 100 when subjected to impact forces such as high-speed collisions.

[0049] See also Figure 2 and Figure 3 In some embodiments, the first floor reinforcement ribs 154 are continuously arranged from one rear longitudinal beam portion 16 to another rear longitudinal beam portion 16 along the lateral direction (Y direction) of the vehicle 1000. In other words, at least part of the first floor reinforcement ribs 154 extend from one rear longitudinal beam portion 16 to another rear longitudinal beam portion 16 in an end-to-end connection. Since at least part of the first floor reinforcement ribs 154 are arranged along the Y direction of the vehicle 1000, the bending strength of the vehicle rear floor assembly 100 along the Y direction of the vehicle 1000 and other directions can be improved.

[0050] It can be understood that the Y direction of the vehicle 1000 is the lateral direction of the vehicle 1000 , and the X direction of the vehicle 1000 is the longitudinal direction of the vehicle 1000 .

[0051] In some embodiments, the second floor reinforcement ribs 155 are continuously arranged from one rear longitudinal beam portion 16 to another rear longitudinal beam portion 16 along the lateral direction (Y direction) of the vehicle 1000. In other words, at least a portion of the second floor reinforcement ribs 155 is connected and extended from one rear longitudinal beam portion 16 to another rear longitudinal beam portion 16. Since at least a portion of the second floor reinforcement ribs 155 are arranged along the Y direction of the vehicle 1000, the bending strength of the vehicle rear floor assembly 100 along the X direction of the vehicle 1000 can be improved.

[0052] See also Figure 3 In some embodiments, the rear longitudinal beam portion 16 includes a longitudinal beam middle section 161 and a longitudinal beam rear section 162 along the longitudinal direction (X direction) of the vehicle 1000, the longitudinal beam middle section 161 is located in the middle part of the rear floor portion 15, and the longitudinal beam rear section 162 is located at the rear edge of the rear floor portion 15; wherein the longitudinal beam rear section 162 is offset toward the outside of the vehicle 1000 along the lateral direction (Y direction) of the vehicle 1000 relative to the longitudinal beam middle section 161.

[0053] In this way, the rear section 162 of the longitudinal beam is offset toward the outside of the vehicle 1000 along the Y direction of the vehicle 1000 relative to the middle section 161 of the longitudinal beam, that is, the distance between the two rear sections 162 of the longitudinal beam is greater than the distance between the two middle sections 161 of the longitudinal beam, so that when the rear seats of the vehicle 1000 are flipped backward from the position of the middle section 161 of the longitudinal beam, a larger space can be provided behind the rear floor assembly 100 of the vehicle, which is conducive to the smooth flipping of the rear seats of the vehicle 1000.

[0054] In some embodiments, the vehicle 1000 may be a three-row seat vehicle. A three-row seat vehicle may be understood as the vehicle 1000 being a 6-seat or 7-seat vehicle, or may be understood as the vehicle 1000 having a front row seat, a middle seat, and a rear row seat. In some embodiments, the number of front row seats may be 2, and both front row seats may be independent seats.

[0055] In some embodiments, the number of middle seats may be 1 to 2. When the number of middle seats is 1, the middle seat may be an integrated seat with two seats or an integrated seat with three seats. When the number of middle seats is 2, both middle seats may be independent seats.

[0056] In some embodiments, the number of rear seats may be 1 to 3. When the number of rear seats is 1, the rear seat may be an integrated two-seat seat or an integrated three-seat seat. When the number of rear seats is 2, both rear seats may be independent seats, or one rear seat may be an independent seat and the other rear seat may be an integrated two-seat seat. When the number of rear seats is 3, all three rear seats may be independent seats.

[0057] In some embodiments, the rear seat is a folding seat, which means that the seat cushion and backrest in the folding seat can be folded into one body and can also be unfolded for use. When the folding seat is in the unfolded state, the seat cushion and the backrest are unfolded with each other, for example, the angle between the seat cushion and the backrest can be degrees to degrees or other angles; when the folding seat is in the folded state, the seat cushion and the backrest are close to each other, for example, the angle between the seat cushion and the backrest can be degrees to degrees or other angles. When the folding seat is in the folded state, it helps to meet the user's space requirements in the cabin along the height direction Z of the vehicle 1000. Among them, the angle between the seat cushion and the backrest of the folding seat can be adjusted by using a recliner.

[0058] In some embodiments, the foldable seat is flippably located in the cabin of the vehicle 1000, and the rotation axis of the foldable seat is located between the front end surface and the rear end surface of the seat cushion of the foldable seat. The foldable seat can be flipped around the rotation axis relative to the vehicle rear floor assembly 100 to a use position and a storage position. When the foldable seat is flipped around the rotation axis relative to the vehicle rear floor assembly 100 to the use position, the foldable seat is located above the rear floor portion 15, so that the user can use the foldable seat conveniently.

[0059] When the folding seat is flipped around the rotation axis to the storage position relative to the vehicle rear floor assembly 100, the folding seat is at least partially located behind the rear floor portion 15, and the seat cushion of the folding seat is located above the backrest of the folding seat, which helps to meet the user's space requirements in the cabin along the height direction Z of the vehicle 1000.

[0060] The rear of the rear floor portion 15 may refer to the direction of the rear floor portion 15 toward the rear of the vehicle 1000, or may refer to the trunk of the vehicle 1000. Before the foldable seat is flipped to the storage position, the foldable seat may be in a folded state in advance, so as to facilitate flipping the foldable seat to the storage position.

[0061] See also Figure 3In some embodiments, along the transverse direction (Y direction) of the vehicle 1000, the surface difference value of the longitudinal beam middle section 161 and the longitudinal beam rear section 162 on the same side is L, 0<L≤260mm. For example, the distance L can be 30mm, 40mm, 100mm, 130mm, 180mm, 200mm or 260mm. In this way, the longitudinal beam rear section 162 is offset by a suitable distance relative to the longitudinal beam middle section 161, and will not interfere with other structures of the vehicle 1000, which is conducive to the rear seat of the vehicle 1000 to flip backward.

[0062] It should be pointed out that, along the Y direction of the vehicle 1000, the distance L between the middle section 161 of the longitudinal beam and the rear section 162 of the longitudinal beam is the distance between two positions corresponding to the middle section 161 of the longitudinal beam and the rear section 162 of the longitudinal beam, for example, along the Y direction of the vehicle 1000, the distance between two surfaces of the middle section 161 of the longitudinal beam and the rear section 162 of the longitudinal beam facing the same side.

[0063] In some embodiments, along the lateral direction (Y direction) of the vehicle 1000, L is 130 mm ± 10 mm. In other words, due to manufacturing errors, L is about 130 mm. In this way, the distance between the two longitudinal beam rear sections 162 is large, which can provide a certain amount of accommodation space for the rear seats of the vehicle 1000 to flip backwards, which is conducive to the rear seats of the vehicle 1000 to flip backwards.

[0064] In the implementation of the present application, each longitudinal beam rear section 162 is offset by 130 mm±10 mm relative to the longitudinal beam middle section 161 . Therefore, the distance between the two longitudinal beam rear sections 162 is increased by 260 mm±20 mm relative to the distance between the two longitudinal beam middle sections 161 .

[0065] See also Figure 3 In some embodiments, the rear longitudinal beam portion 16 further includes a longitudinal beam transition section 163, and the longitudinal beam transition section 163 extends obliquely from the longitudinal beam middle section 161 to the longitudinal beam rear section 162. In this way, the longitudinal beam transition section 163 allows the rear longitudinal beam portion 16 to gradually transition from the longitudinal beam middle section 161 to the longitudinal beam rear section 162, which is beneficial to reducing the stress of the rear longitudinal beam and improving the strength of the rear longitudinal beam.

[0066] See also Figure 2 and Figure 3 In some embodiments, the middle portion of the rear floor portion 15 is arched upward to form an arched portion 151, and the longitudinal beam middle section 161 is connected to the arched portion 151. Generally, the rear seats of the vehicle 1000 are arranged on the arched portion 151, and the longitudinal beam middle section 161 is connected to the arched portion 151, that is, the rear seats can be flipped backward from the longitudinal beam middle section 161 to the space between the two longitudinal beam rear sections 162. In the embodiment of the present application, the longitudinal beam rear section 162 is connected to the lower end of the arched portion 151.

[0067] See also Figure 4 In some embodiments, along the longitudinal direction (X direction) of the vehicle 1000, the rear longitudinal beam portion 16 includes a longitudinal beam middle section 161 and a longitudinal beam front section 164 connected to the longitudinal beam middle section 161, the longitudinal beam middle section 161 is located in the middle part of the rear floor portion 15, and the longitudinal beam front section 164 is located in the front part of the floor portion and is inclined relative to the longitudinal beam middle section 161;

[0068] The longitudinal beam middle section 161 includes a first surface 121 facing the bottom of the vehicle, and the longitudinal beam front section 164 includes a second surface 122 facing the rear of the vehicle. The first surface 121 and the second surface 122 are used to enclose a receiving space 101, and the receiving space 101 is used to receive the rear drive assembly of the vehicle 1000. The angle α formed between the first surface 121 and the second surface 122 ranges from 90° to 125°. For example, the angle α between the first surface 121 and the second surface 122 can be 90°, 95°, 100°, 105°, or 125°.

[0069] In this way, the angle formed between the first surface 121 and the second surface 122 is in the range of 90°-125°, so that the height of the arch of the vehicle rear floor assembly 100 is appropriate, so that the space of the accommodating space 101 is large enough to accommodate the rear drive assembly, and the vehicle rear floor assembly 100 can be easily demolded to form the accommodating space 101 during casting, and the manufacturing difficulty is relatively low.

[0070] Furthermore, since the rear seats of the vehicle 1000 are arranged in the middle part of the rear floor portion 15, the angle α formed between the first surface 121 and the second surface 122 is in the range of 90°-125°, so that after the user sits on the rear seats of the vehicle 1000, the bending angle between the user's thighs and calves can also be 90°-125°, which is ergonomic and the user feels more comfortable when sitting on the rear seats of the vehicle 1000.

[0071] Specifically, the first surface 121 may be a horizontal plane or a surface with an angle less than 10° with respect to the horizontal plane, and thus the second surface 122 is an inclined surface. The first lower surface 12 mentioned above includes the first surface 121 and the second surface 122 .

[0072] like Figure 4 As shown, among the three vertical dotted lines in the figure, the longitudinal beam middle section 161 and the longitudinal beam front section 164 are respectively located between two of the dotted lines.

[0073] See also Figure 4In some embodiments, the angle α formed between the first surface 121 and the second surface 122 is 100°±5°. In other words, due to manufacturing errors, the angle α is around 100°. In this way, the accommodation space 101 is large enough to accommodate the rear drive assembly of the vehicle 1000, and the vehicle rear floor assembly 100 can be easily demolded to form the accommodation space 101 during casting, and the manufacturing difficulty is relatively low.

[0074] See also Figure 4 In some embodiments, the longitudinal beam transition section 163 includes a third surface 123 opposite to the second surface 122, and the first surface 121, the second surface 122 and the third surface 123 are used to enclose the accommodation space 101. In this way, the rear longitudinal beam portion 16 can form a part of the accommodation space 101, so that the rear drive assembly of the vehicle 1000 can be partially accommodated in the space formed by the rear longitudinal beam portion 16, thereby improving the compactness of the cooperation between the vehicle rear floor assembly 100 and the rear drive assembly of the vehicle 1000.

[0075] In summary, in one embodiment of the present application, the vehicle rear floor assembly 100 is an integral die-casting, and the vehicle rear floor assembly 100 includes a rear floor portion 15 and rear longitudinal beam portions 16 located on both sides of the rear floor portion 15. Along the longitudinal direction of the vehicle 1000, the rear longitudinal beam portion 16 includes a longitudinal beam middle section 161 and a longitudinal beam front section 164 connected to the longitudinal beam middle section 161. The longitudinal beam middle section 161 is located in the middle part of the rear floor portion 15, and the longitudinal beam front section 164 is located in the front part of the floor portion and is inclined relative to the longitudinal beam middle section 161; wherein the longitudinal beam middle section 161 includes a first surface 121 facing the bottom of the vehicle, and the longitudinal beam front section 164 includes a second surface 122 facing the rear of the vehicle. The first surface 121 and the second surface 122 are used to enclose a housing space 101, and the housing space 101 is used to accommodate the rear drive assembly of the vehicle 1000. The angle α formed between the first surface 121 and the second surface 122 ranges from 90° to 125°.

[0076] In this way, the angle formed between the first surface 121 and the second surface 122 is in the range of 90°-125°, so that the height of the arch of the vehicle rear floor assembly 100 is appropriate, so that the space of the accommodating space 101 is large enough to accommodate the rear drive assembly, and the vehicle rear floor assembly 100 can be easily demolded to form the accommodating space 101 during casting, and the manufacturing difficulty is relatively low.

[0077] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0078] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0080] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A vehicle rear floor assembly, characterized in that: The vehicle rear floor assembly is an integral die-casting, and includes a rear floor portion and rear longitudinal beam portions located on both sides of the rear floor portion. Along the longitudinal direction of the vehicle, the rear longitudinal beam portion includes a longitudinal beam middle section and a longitudinal beam front section connected to the longitudinal beam middle section, the longitudinal beam middle section is located in the middle of the rear floor portion, and the longitudinal beam front section is located in the front side of the floor portion and is inclined relative to the longitudinal beam middle section. Among them, the middle section of the longitudinal beam includes a first surface facing the bottom of the vehicle, and the front section of the longitudinal beam includes a second surface facing the rear of the vehicle. The first surface and the second surface are used to enclose a accommodating space, and the accommodating space is used to accommodate the rear-wheel drive assembly of the vehicle. The angle formed between the first surface and the second surface ranges from 90° to 125°.

2. The vehicle rear floor assembly according to claim 1, characterized in that: An angle formed between the first surface and the second surface is 100°±5°.

3. The vehicle rear floor assembly according to claim 1, characterized in that: The rear longitudinal beam portion further includes a longitudinal beam rear section, which is located at a rear edge of the rear floor portion and is offset toward an outer side of the vehicle along a transverse direction of the vehicle relative to the longitudinal beam middle section.

4. The vehicle rear floor assembly according to claim 3, characterized in that: Along the transverse direction of the vehicle, the surface difference value of the middle section of the longitudinal beam and the rear section of the longitudinal beam on the same side is L, 0<L≤260mm.

5. The vehicle rear floor assembly according to claim 3, characterized in that: The rear longitudinal beam portion also includes a longitudinal beam transition section, which extends obliquely from the longitudinal beam middle section to the longitudinal beam rear section, and the longitudinal beam transition section includes a third surface opposite to the second surface. The first surface, the second surface and the third surface are used to jointly enclose the accommodating space.

6. The vehicle rear floor assembly according to claim 1, characterized in that: The middle portion of the rear floor portion is arched upward to form an arched portion, and the longitudinal beam middle section is connected to the arched portion.

7. The vehicle rear floor assembly according to claim 1, characterized in that: The rear longitudinal beam portion includes a first inner surface, a first lower surface and a side surface, the first inner surface is located inside the vehicle cabin, the first lower surface is located outside the vehicle cabin, the side surface connects the first inner surface and the first lower surface, the first inner surface, the first lower surface and the side surface are all provided with longitudinal beam reinforcement ribs, and the first lower surface includes the first surface and the second surface.

8. The vehicle rear floor assembly according to claim 7, characterized in that: The first inner surface includes an inner top surface facing upward of the vehicle and an inner side surface connected to the inner top surface, the longitudinal beam reinforcement rib includes a first longitudinal beam reinforcement rib arranged on the inner top surface and a second longitudinal beam reinforcement rib arranged on the inner side surface, and the second longitudinal beam reinforcement rib extends upward from the rear floor portion.

9. The vehicle rear floor assembly according to claim 7, characterized in that: The longitudinal beam reinforcement ribs include a plurality of third longitudinal beam reinforcement ribs arranged on the side surface, and some of the third longitudinal beam reinforcement ribs are arranged to intersect; and / or, The longitudinal beam reinforcement ribs include a plurality of fourth longitudinal beam reinforcement ribs arranged on the first lower surface, and some of the fourth longitudinal beam reinforcement ribs are arranged to intersect; and / or, The rear floor portion includes a second inner surface and a second lower surface, the second inner surface is located in the cabin of the vehicle, the second lower surface is located outside the cabin of the vehicle, the second inner surface is provided with a first floor reinforcement rib, and the second lower surface is provided with a second floor reinforcement rib.

10. A vehicle, characterized in that: The vehicle rear floor assembly comprises the vehicle rear floor assembly according to any one of claims 1 to 9.

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