Vehicle body and vehicle

Abstract

The utility model provides a vehicle body and a vehicle, the vehicle body of the utility model relates to the vehicle body technical field, it includes the doorsill beam and the rear floor longitudinal beam that are arranged along the whole vehicle front-back direction in order, and the front floor lower longitudinal beam that is located in the doorsill beam, the front part of the rear floor longitudinal beam is equipped with the doorsill beam connecting part and the lower longitudinal beam connecting part, and the lower longitudinal beam connecting part is equipped with the doorsill beam connecting part and the lower longitudinal beam connecting part. The doorsill beam connecting part is connected with the rear end of the doorsill beam, and the lower longitudinal beam connecting part is connected with the rear end of the front floor lower longitudinal beam. According to the vehicle body, the doorsill beam connecting part and the lower longitudinal beam connecting part are arranged on the front portion of the rear floor longitudinal beam, so that collision force on the doorsill beam and the rear floor longitudinal beam can be smoothly transmitted to the rear floor longitudinal beam, a force transmission channel penetrating front and back is formed, the force transmission efficiency is high, and therefore the safety performance of the vehicle is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body technology, and in particular to a vehicle body. It also relates to vehicles using this vehicle body. Background Technology

[0002] The vehicle body is typically a steel frame structure, formed by welding together multiple stamped parts. On either side of the vehicle body, there are usually two force transmission paths running longitudinally. The outermost path is the sill beam's front-to-back force transmission path, while the innermost path is the front floor under-mounted longitudinal beam's front-to-back force transmission path.

[0003] In the existing vehicle body structure, the rear end of the front floor longitudinal beam is positioned relative to the front of the rear floor longitudinal beam, closer to the interior side of the vehicle body longitudinal beam. In frontal or rear-end collisions, the front of the rear floor longitudinal beam suffers from low force transmission efficiency, affecting the vehicle's safety performance. Utility Model Content

[0004] In view of this, the present invention aims to provide a vehicle body to improve the safety performance of vehicles.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A vehicle body includes a sill beam and a rear floor longitudinal beam arranged sequentially along the front-rear direction of the vehicle, and a front floor lower longitudinal beam located inside the sill beam.

[0007] The front part of the rear floor longitudinal beam is provided with a sill beam connecting part and a lower longitudinal beam connecting part. The sill beam connecting part is connected to the rear end of the sill beam, and the lower longitudinal beam connecting part is connected to the rear end of the front floor lower longitudinal beam.

[0008] Furthermore, the sill beam includes an outer portion and an inner portion that are connected together in the left-right direction of the vehicle, and a connecting bracket connecting the outer portion and the inner portion.

[0009] Furthermore, the outer portion is made of extruded aluminum; and / or, the inner portion includes an inner front section, an inner middle section, and an inner rear section connected sequentially along the front-rear direction of the vehicle.

[0010] Furthermore, a first cavity extending in the longitudinal direction of the vehicle is formed between the inner rear section, the connecting bracket, and the rear floor longitudinal beam, and a second cavity extending in the longitudinal direction of the vehicle is formed between the rear floor longitudinal beam and the front floor of the vehicle; the first cavity and the second cavity are arranged adjacent to each other in the left-right direction of the vehicle, and the second cavity is closer to the interior side of the vehicle than the first cavity.

[0011] Furthermore, the inner rear section includes a rear main body and flanges placed on both sides of the rear main body, with the flanges on both sides respectively connected to the connecting bracket and the rear floor longitudinal beam.

[0012] Furthermore, the front part of the threshold beam connection is connected to at least the bottom wall and side wall of the inner middle section, and the rear part of the threshold beam connection is connected to at least the bottom wall of the inner rear section.

[0013] Furthermore, the lower longitudinal beam connecting part and the lower longitudinal beam of the front floor have an overlapping connection, and the overlapping part is connected by a connector that passes through both.

[0014] Furthermore, it also includes a lower front bulkhead; the lower front bulkhead is provided with a lower front bulkhead connecting beam extending along the front-rear direction of the vehicle, the front end of the lower front bulkhead connecting beam is connected to the front engine compartment longitudinal beam, and the rear end is connected to the front floor under longitudinal beam.

[0015] Furthermore, the lower front connecting beam is connected to the sill beam via a torsion box; and / or, the lower front connecting beam is provided on both sides of the lower part of the front, and a lower front reinforcing beam is provided on the lower part of the front connecting beam connecting the two sides.

[0016] Compared with the prior art, this utility model has the following advantages:

[0017] The vehicle body described in this utility model, by setting a sill beam connecting part and a lower longitudinal beam connecting part at the front of the rear floor longitudinal beam, allows the collision force on the sill beam and the rear floor longitudinal beam to be smoothly transferred to the rear floor longitudinal beam, forming two force transmission channels that run through the front and rear, resulting in high force transmission efficiency and thus improving the vehicle's safety performance.

[0018] In addition, the door sill beam includes an outer part and an inner part that are connected together in the left-right direction of the whole vehicle, as well as a connecting bracket connecting the outer part and the inner part, which facilitates the overall layout. The outer part can be made of extruded aluminum, which is lightweight, and the setting of the connecting bracket makes it easy to connect the outer part and the inner part together. The inner part is divided into an inner front section, an inner middle section and an inner rear section, which can still utilize the existing assembly line for easy processing.

[0019] In addition, by rationally arranging the inner rear section, connecting bracket, rear floor longitudinal beam and front floor to form the first cavity and the second cavity, the connecting part is lighter in weight and has higher structural strength. When dealing with collision force, it can absorb energy step by step, which helps to improve the safety performance of the vehicle.

[0020] Furthermore, by improving the structure of the inner rear section, it is easier to form the aforementioned first cavity and second cavity. The connection structure on the inner rear section, which connects the flange to the connecting bracket and the rear floor longitudinal beam respectively, has high connection reliability, thereby improving the safety performance of the connection between the rear part of the sill beam and the rear floor longitudinal beam.

[0021] As for connecting the front part of the sill beam connection to the bottom and side walls of the inner middle section, and connecting the rear part of the sill beam connection to at least the bottom wall of the inner rear section, the connection reliability between the sill beam and the rear floor longitudinal beam is high, which facilitates the smooth transmission of collision force through the force transmission channel formed by the sill beam and the rear floor longitudinal beam, thereby improving the vehicle's safety performance.

[0022] The lower longitudinal beam connection has an overlapping portion that connects to the front floor lower longitudinal beam, and the overlapping portion is connected by a connector, which facilitates processing and assembly. Furthermore, the front floor lower longitudinal beam and the rear floor longitudinal beam can form a force transmission channel through the overlapping portion and the connector to smoothly transmit collision forces. This force transmission channel can cooperate well with the force transmission channel of the sill beam, further improving the force transmission efficiency of the force transmission channel, thereby improving the vehicle's safety performance.

[0023] Meanwhile, a lower connecting beam is installed on the lower part of the front bulkhead, connecting the front engine compartment longitudinal beam and the front floor longitudinal beam. Collision force can be transmitted through the front engine compartment longitudinal beam, the front floor longitudinal beam, and the rear floor longitudinal beam, forming a continuous force transmission channel. The lower connecting beam is connected to the sill beam via a torsion box, allowing the front engine compartment longitudinal beam, sill beam, and rear floor longitudinal beam to also form a continuous force transmission channel. This creates two smooth force transmission channels between the front engine compartment longitudinal beam and the rear floor longitudinal beam, forming a ring, which further improves force transmission and energy absorption, thus enhancing vehicle collision safety.

[0024] The front lower reinforcement beam connects the force transmission structures on the left and right sides of the vehicle, allowing the collision force passing through the front lower connecting beam to be decomposed and transmitted through the front lower reinforcement beam. In conjunction with the dual force transmission channels on both sides of the vehicle, it has excellent force transmission and energy absorption effects, thereby further improving the vehicle's collision safety.

[0025] Another objective of this invention is to provide a vehicle having the body described above.

[0026] The vehicle described in this utility model has the same beneficial effects as the aforementioned vehicle body compared to the prior art, which will not be repeated here. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is a schematic diagram of the vehicle body structure according to Embodiment 1 of this utility model;

[0029] Figure 2 for Figure 1 A structural diagram from another perspective;

[0030] Figure 3 For along Figure 2 Cross-sectional view of line AA;

[0031] Figure 4 This is an assembly drawing of the sill beam, the front floor under-mounted longitudinal beam, and the rear floor longitudinal beam as described in Embodiment 1 of this utility model;

[0032] Figure 5 for Figure 4 A structural diagram from another perspective;

[0033] Figure 6 This is a schematic diagram of the front section of the rear floor longitudinal beam as described in Embodiment 1 of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Sill beam; 2. Rear floor longitudinal beam; 3. Front floor lower longitudinal beam; 4. First cavity; 5. Second cavity; 6. Lower part of the front bulkhead;

[0036] 101. Outer part; 102. Inner part; 103. Connecting bracket;

[0037] 1021. Front inner section; 1022. Middle inner section; 1023. Rear inner section; 10231. Main rear section; 10232. Flanged edge;

[0038] 201. Front section of rear floor longitudinal beam; 2011. Threshold beam connection; 2012. Lower longitudinal beam connection;

[0039] 601. Lower front connecting beam; 602. Torque box; 603. Lower front reinforcing beam. Detailed Implementation

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0041] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model in light of the specific circumstances.

[0043] In the accompanying drawings of this utility model, the front-to-back direction refers to the vehicle's front-to-back direction, typically indicating the vehicle's length; the left-to-right direction refers to the vehicle's left-to-right direction, typically indicating the vehicle's width; and the up-down direction refers to the vehicle's height. In the drawings: the arrows point forward to the front of the vehicle, the arrows backward to the rear of the vehicle, the arrows upward to the top of the vehicle, and the arrows downward to the bottom of the vehicle. When sitting in the driver's seat facing the front of the vehicle, the side with your left hand is the left side, and the side with your right hand is the right side. In the drawings, the arrows point left to the left side of the vehicle and right to the right side. The terms "inner" and "outer" are relative. "Inner" refers to the interior space of the vehicle, while "outer" refers to the exterior of the vehicle, that is, the area away from the interior space.

[0044] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0045] Example 1

[0046] This embodiment relates to a vehicle body that improves the connection between its structure and components, thereby enabling smooth force transmission between the front and rear of the vehicle and improving its safety performance.

[0047] Based on the above design concept, an exemplary structure of the vehicle body in this embodiment is as follows: Figure 1 and 2 As shown, in terms of overall structure, the vehicle body of this embodiment includes a sill beam 1 and a rear floor longitudinal beam 2 arranged sequentially along the front-rear direction of the vehicle, as well as a front floor lower longitudinal beam 3 located inside the sill beam 1.

[0048] It should be noted that, since the structures on the left and right sides of the vehicle are symmetrical about the center line of the vehicle in the left and right direction, that is, both the left and right sides of the vehicle are equipped with the aforementioned door sill beam 1, rear floor longitudinal beam 2 and front floor lower longitudinal beam 3, the following description will take the structure on the left side of the vehicle as an example.

[0049] Combination Figures 4 to 6 As shown, in this embodiment, the front part of the rear floor longitudinal beam 2 is provided with a sill beam connecting part 2011 and a lower longitudinal beam connecting part 2012. The sill beam connecting part 2011 is connected to the rear end of the sill beam 1, and the lower longitudinal beam connecting part 2012 is connected to the rear end of the front floor lower longitudinal beam 3. This arrangement ensures that both the sill beam 1 and the front floor lower longitudinal beam 3 are connected to the rear floor longitudinal beam 2, thereby facilitating smooth force transmission between the front and rear. Furthermore, both the sill beam 1 and the front floor lower longitudinal beam 3 can transmit collision forces along the longitudinal direction of the vehicle to the rear floor longitudinal beam 2, forming two continuous force transmission channels, which helps improve the vehicle's collision safety.

[0050] like Figure 2 and Figure 3 As shown, in a preferred embodiment, the sill beam 1 includes an outer portion 101 and an inner portion 102 connected together in the left-right direction of the vehicle, and a connecting bracket 103 connecting the outer portion 101 and the inner portion 102, so as to facilitate the overall arrangement and make processing and assembly more convenient.

[0051] In a preferred embodiment, the outer portion 101 is made of extruded aluminum, which is lightweight. To facilitate the connection between the outer portion 101 and the inner portion 102, a connecting bracket 103 is connected to the side of the outer portion 101 facing the vehicle interior. This connection can be achieved using connectors such as bolt pairs. Thus, the outer portion 101 can be welded to the inner portion 102 via the connecting bracket 103, allowing for convenient processing using existing welding production lines.

[0052] In a preferred embodiment, the inner portion 102 includes an inner front section 1021, an inner middle section 1022, and an inner rear section 1023 connected sequentially along the front-rear direction of the vehicle. The structures of the inner front section 1021 and the inner middle section 1022 can still refer to existing structures, both having a "U"-shaped cross-section. The structure of the inner rear section 1023 will be described below. Here, the segmented structure of the inner portion 102 facilitates manufacturing and assembly with existing vehicle body structures.

[0053] To improve the structural strength of the rear of the sill beam 1 and the longitudinal beam 3 under the front floor, as a preferred embodiment, the following is still referred to Figure 2 and Figure 3As shown, a first cavity 4 extending in the front-rear direction of the vehicle is formed between the inner rear section 1023, the connecting bracket 103 and the rear floor longitudinal beam 2, and a second cavity 5 extending in the front-rear direction of the vehicle is formed between the rear floor longitudinal beam 2 and the front floor of the vehicle. The first cavity 4 and the second cavity 5 are arranged adjacent to each other in the left-right direction of the vehicle, and the second cavity 5 is closer to the interior side of the vehicle than the first cavity 4.

[0054] Here, by rationally arranging the inner rear section 1023, the connecting bracket 103, the rear floor longitudinal beam 2, and the front floor, the first cavity 4 and the second cavity 5 are formed, making the connecting part lighter in weight and having higher structural strength. When dealing with collision forces, it can absorb energy step by step, which helps to improve the safety performance of the vehicle.

[0055] In this embodiment, for ease of processing and arrangement, the rear floor longitudinal beam 2 is processed in sections along the longitudinal direction of the vehicle and then connected together. Figure 6 The rear floor longitudinal beam 2 is shown as the front section 201 of the rear floor longitudinal beam 2. The aforementioned threshold beam connecting part 2011 and lower longitudinal beam connecting part 2012 are formed on the front section 201 of the rear floor longitudinal beam. The aforementioned first cavity 4 and second cavity 5 are also formed by the front section 201 of the rear floor longitudinal beam, the inner rear section 1023, the connecting bracket 103 and the front floor.

[0056] In the prior art, the rear section of the sill beam is connected to the front section 201 of the rear floor longitudinal beam along the left-right direction of the vehicle, and the connection position between the rear section of the sill beam and the front section 201 of the rear floor longitudinal beam is designed with an inclined surface. Under the action of frontal or rear collision, the two are easily torn apart and separated along the inclined surface, which affects the safety performance.

[0057] To improve the structural strength of the rear section of the sill beam, as a preferred embodiment, it is still referred to Figure 3 As shown, the inner rear section 1023 of this embodiment includes a rear section body 10231 and flanges 10232 disposed on both sides of the rear section body 10231. The flanges 10232 on both sides are connected to the connecting bracket 103 and the rear floor longitudinal beam 2, respectively. For ease of description, the flanges 10232 on both sides are referred to as the first flange and the second flange, respectively.

[0058] In terms of specific structure, the rear main body 10231 has an "L"-shaped cross-section. The first flange and the second flange are located on both sides of the rear main body 10231, and the first flange is connected to the connecting bracket 103. The two are connected in the left-right direction of the vehicle, and the second flange is connected to the front of the rear floor longitudinal beam 2. The two are connected in the up-down direction of the vehicle. This structure, which connects from multiple directions, can effectively improve the connection reliability between the sill beam 1 and the rear floor longitudinal beam 2.

[0059] Here, by improving the structure of the inner rear section 1023, the front section of the rear floor longitudinal beam 201 integrates the structure of the rear section of the sill beam on the basis of the existing structure. Due to the integrated setting, the one-piece structure has a better connection and better strength, and shows better performance in terms of safety. The flanging 10232 on the inner rear section 1023 is respectively connected to the connecting bracket 103 and the rear floor longitudinal beam 2, and the connection structure also has high connection reliability, which is beneficial to improving the safety performance of the connection part between the rear part of the sill beam 1 and the rear floor longitudinal beam 2.

[0060] As a preferred embodiment, referring to Figure 4 and Figure 5 shown, at least the front part of the sill beam connection part 2011 is connected to the bottom wall and the side wall of the inner middle section 1022, and at least the rear part of the sill beam connection part 2011 is connected to the bottom wall of the inner rear section 1023.

[0061] In this embodiment, the cross-section of the inner middle section 1022 is in a "Ji" shape, and the sill beam connection part 2011 is specifically a sill beam connecting plate. The front part of the sill beam connecting plate is in a "Ji" shape, so that the sill beam connecting plate fits with the bottom wall and the side walls on both sides of the inner middle section 1022, having a relatively large contact area. When welding, more welding points can be arranged, which can improve the connection reliability between the two.

[0062] The cross-section of the rear end main body of the inner rear section 1023 is in an "L" shape, and the rear part of the sill beam connecting plate is in a flat shape. The aforementioned second flanging fits with the sill beam connecting plate, and there is a relatively large contact area between the two, so that more welding points can be arranged, and the connection reliability between the two can be improved.

[0063] It should be noted that connecting the front part of the sill beam connection part 2011 to the bottom wall and the side wall of the inner middle section 1022, and connecting the rear part of the sill beam connection part 2011 to at least the bottom wall of the inner rear section 1023 makes the connection reliability between the sill beam 1 and the rear floor longitudinal beam 2 relatively high, facilitating the smooth transmission of the collision force through the force transmission channel formed by the sill beam 1 and the rear floor longitudinal beam 2, and improving the safety performance of the vehicle.

[0064] Referring to Figures 4 to 6 shown, as a preferred embodiment, the lower longitudinal beam connection part 2012 and the front floor lower longitudinal beam 3 have a lapped part that is lapped and connected, and the lapped part is connected by a connecting piece passing through both of them.

[0065] In this embodiment, the lower longitudinal beam connection part 2012 is specifically a lower longitudinal beam connecting plate. The lower longitudinal beam connecting plate and the rear part of the front floor lower longitudinal beam 3 overlap together to form a lapped part, and a through hole passing through both of them is provided on the lapped part, so that the lapped part is connected by a bolt pair passing through the through hole. The bolt pair constitutes the connecting piece passing through the lapped part.

[0066] In the above structure, the lower longitudinal beam connecting part 2012 and the front floor lower longitudinal beam 3 have an overlapping connection, and the overlapping part is connected by a connector, which facilitates processing and assembly. The front floor lower longitudinal beam 3 and the rear floor longitudinal beam 2 can form a force transmission channel through the overlapping part and the connector to smoothly transmit the collision force. This force transmission channel can cooperate well with the force transmission channel of the sill beam 1, thereby further improving the force transmission efficiency of the force transmission channel and thus improving the safety performance of the vehicle.

[0067] As a preferred embodiment, reference is still made to... Figure 1 and Figure 2 As shown, the vehicle body in this embodiment also includes a lower front bulkhead 6, on which a lower front bulkhead connecting beam 601 extending along the longitudinal direction of the vehicle is provided. The front end of the lower front bulkhead connecting beam 601 is connected to the longitudinal beam of the front engine compartment, and the rear end is connected to the longitudinal beam 3 under the front floor. In this embodiment, the lower front bulkhead connecting beam 601 is disposed on the lower surface of the lower front bulkhead 6, and the specific structure of the lower front bulkhead connecting beam 601 can refer to the structure of existing beams.

[0068] In this structure, the front lower connecting beam 601 is set between the front engine compartment longitudinal beam and the front floor lower longitudinal beam 3, forming a transition force transmission mechanism at the rear end of the front engine compartment longitudinal beam, so that the collision force can be transmitted through the front engine compartment longitudinal beam, the front floor lower longitudinal beam 3 and the rear floor longitudinal beam 2, forming a force transmission channel that runs through the front and rear.

[0069] In a preferred embodiment, the lower front bulkhead connecting beam 601 is connected to the front part of the sill beam 1 via a torsion box 602, thus forming a transitional force transmission structure connecting the front engine compartment longitudinal beam and the sill beam 1. It should be noted that the torsion box 602 is also located on the lower side of the lower front bulkhead 6. The torsion box 602 can be a conventional box structure, or, as in this embodiment, a beam structure extending along the left-right direction of the vehicle. The number of such beam structures can be one, or as shown in the example. Figure 2 The two shown can be referenced from existing beam structures for their specific structures.

[0070] Here, the lower connecting beam 601 of the front bulkhead is connected to the sill beam 1 through the torsion box 602. The front engine compartment longitudinal beam, the sill beam 1 and the rear floor longitudinal beam 2 can also form a force transmission channel that runs through the front and rear. This makes two smooth force transmission channels between the front engine compartment longitudinal beam and the rear floor longitudinal beam 2, and the two force transmission channels form a ring, which further helps to improve the force transmission and energy absorption effect, and thus helps to improve the collision safety of the vehicle.

[0071] As a preferred implementation method, continue to refer to Figure 2As shown, both sides of the lower front section 6 are provided with a lower front section connecting beam 601, and the lower front section 6 is provided with a lower front section reinforcing beam 603 connecting the lower front section connecting beams 601 on both sides. In this embodiment, the lower front section reinforcing beam 603 extends along the left and right direction of the vehicle, and its specific structure still refers to the existing beam structure.

[0072] It should be noted that the front lower reinforcing beam 603 installed here can connect the force transmission structures on the left and right sides of the vehicle, so that the collision force passing through the front lower connecting beam 601 can also be decomposed and transmitted through the front lower reinforcing beam 603. In conjunction with the dual force transmission channels on both sides of the vehicle, it has excellent force transmission and energy absorption effects, thereby further improving the collision safety of the vehicle.

[0073] In a preferred embodiment, the lower front section 6 of this embodiment is a die-cast integrated structure that integrates the existing lower left front section plate, lower right front section plate, and front section central channel connecting plate into a single structure. At the same time, the lower front section 6 integrates structures such as the lower front section connecting beam 601, torsion box 602, and lower front section reinforcing beam 603, making the lower front section 6 itself structurally strong and able to connect smoothly with the front and rear components of the lower front section 6, thereby improving the vehicle's safety performance.

[0074] In this embodiment, the vehicle body has a sill beam connecting part 2011 and a lower longitudinal beam connecting part 2012 provided at the front of the rear floor longitudinal beam 2. This allows the collision forces on the sill beam 1 and the rear floor longitudinal beam 2 to be smoothly transmitted to the rear floor longitudinal beam 2, forming two force transmission channels that run through the front and rear. This results in high force transmission efficiency and improves the vehicle's safety performance.

[0075] Example 2

[0076] This embodiment relates to a vehicle having a body as described in Embodiment 1.

[0077] The vehicle in this embodiment, by applying the body of Embodiment 1, has two through force transmission channels on both the left and right sides of the vehicle. The dual force transmission channels on both sides can also transmit force and absorb energy through the front lower reinforcing beam 603, resulting in excellent vehicle safety performance.

[0078] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A vehicle body, characterized in that: It includes a sill beam (1) and a rear floor longitudinal beam (2) arranged sequentially along the front-rear direction of the vehicle, and a front floor under longitudinal beam (3) located inside the sill beam (1); The front part of the rear floor longitudinal beam (2) is provided with a sill beam connection part (2011) and a lower longitudinal beam connection part (2012). The sill beam connection part (2011) is connected to the rear end of the sill beam (1), and the lower longitudinal beam connection part (2012) is connected to the rear end of the front floor lower longitudinal beam (3).

2. The vehicle body according to claim 1, characterized in that: The sill beam (1) includes an outer portion (101) and an inner portion (102) connected together in the left-right direction of the vehicle, and a connecting bracket (103) connecting the outer portion (101) and the inner portion (102).

3. The vehicle body according to claim 2, characterized in that: The outer portion (101) is made of extruded aluminum; and / or, The inner portion (102) includes an inner front section (1021), an inner middle section (1022), and an inner rear section (1023) connected sequentially along the front-rear direction of the vehicle.

4. The vehicle body according to claim 3, characterized in that: A first cavity (4) extending in the front-rear direction of the vehicle is formed between the inner rear section (1023), the connecting bracket (103) and the rear floor longitudinal beam (2), and a second cavity (5) extending in the front-rear direction of the vehicle is formed between the rear floor longitudinal beam (2) and the front floor of the vehicle. The first cavity (4) and the second cavity (5) are arranged adjacent to each other in the left-right direction of the vehicle, and the second cavity (5) is closer to the inside of the vehicle than the first cavity (4).

5. The vehicle body according to claim 4, characterized in that: The inner rear section (1023) includes a rear section body (10231) and flanges (10232) placed on both sides of the rear section body (10231). The flanges (10232) on both sides are connected to the connecting bracket (103) and the rear floor longitudinal beam (2) respectively.

6. The vehicle body according to claim 3, characterized in that: The front part of the threshold beam connecting part (2011) is connected to the bottom wall and side wall of the inner middle section (1022) at least, and the rear part of the threshold beam connecting part (2011) is connected to the bottom wall of the inner rear section (1023) at least.

7. The vehicle body according to claim 1, characterized in that: The lower longitudinal beam connecting part (2012) and the front floor lower longitudinal beam (3) have an overlapping connection, and the overlapping part is connected by a connector through which the two are inserted.

8. The vehicle body according to any one of claims 1-7, characterized in that: It also includes the lower front part (6); The lower part (6) of the front bulkhead is provided with a front bulkhead lower connecting beam (601) extending in the front-rear direction of the whole vehicle. The front end of the front bulkhead lower connecting beam (601) is connected to the front engine compartment longitudinal beam, and the rear end is connected to the front floor lower longitudinal beam (3).

9. The vehicle body according to claim 8, characterized in that: The lower front connecting beam (601) is connected to the sill beam (1) via a torsion box (602); and / or, Both sides of the lower front section (6) are provided with the lower front section connecting beams (601), and the lower front section (6) is provided with a lower front section reinforcing beam (603) connecting the lower front section connecting beams (601) on both sides.

10. A vehicle, characterized in that: The vehicle has a body as described in any one of claims 1-9.

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