Vehicle body

Abstract

A vehicle body includes a rear suspension including a pair of trailing arms and an axle beam connecting the trailing arms in a vehicle transverse direction, a rear longitudinal beam having a first end connected to a center longitudinal beam of the vehicle body and a second end connected to one of the pair of trailing arms, a lower side sill provided on side surfaces of the center longitudinal beam and the rear longitudinal beam, and a support bracket connecting the lower side sill to the second end of the rear longitudinal beam. The vehicle body according to the present invention can ensure rear impact performance of a low-floor special vehicle.

Description

Technical Field

[0001] This invention relates to a vehicle body. Background Technology

[0002] With advancements in electric vehicles and autonomous driving technologies, private-purpose vehicles (PBVs) can meet diverse usage needs. In these PBVs, the size of the interior space is crucial for enhancing market competitiveness, as it must accommodate various intended usage scenarios. To meet these interior space requirements in PBVs, lower floor heights and sliding doors can be employed.

[0003] The above disclosures are intended only to enhance the understanding of the general background of the present invention and should not be construed as an admission or implication in any way that such disclosures constitute relevant prior art known to those skilled in the art. Summary of the Invention

[0004] To achieve a low floor height, the trailing arm is configured to insert into the rear longitudinal beam, resulting in a localized weakening of the rear longitudinal beam's cross-section. Therefore, sufficient rigidity is required to withstand rear-end collisions and improve crash performance.

[0005] The invention is not limited to the aspects described above, and other aspects of the invention not described will be more clearly understood by those skilled in the art through the following detailed description.

[0006] According to one or more exemplary embodiments of the present invention, a vehicle body includes: a rear suspension including: a pair of trailing arms and an axle beam connecting the trailing arms laterally along the vehicle; a rear longitudinal beam having a first end connected to a central longitudinal beam of the vehicle body and a second end connected to one of the trailing arms; a lower side beam disposed on a side surface of the central longitudinal beam and the rear longitudinal beam; and a support bracket connecting the lower side beam to a second end of the rear longitudinal beam.

[0007] The outer surface of the lower side beam is open to form an open space. The vehicle body also includes a connecting bracket, which is disposed in the open space of the lower side beam and connected to the support bracket via the lower side beam.

[0008] The lower beam includes the B-pillar area and the C-pillar area. The support bracket connects the C-pillar area of ​​the lower beam to the second end of the rear longitudinal beam.

[0009] The rear longitudinal beams include a pair of rear longitudinal beams spaced apart from each other along the transverse direction of the vehicle. The vehicle body also includes a rear crossbeam, which extends transversely along the vehicle and is configured to connect the pair of rear longitudinal beams.

[0010] The rear crossbeam is connected to the battery along the vehicle's transverse direction.

[0011] The vehicle body also includes: a door guide rail, located at the upper end of the lower side beam; a sliding arm, slidably connected to the door guide rail; and a sliding door, connected to the sliding arm.

[0012] The first end of the door guide rail is located on the inside of the central longitudinal beam.

[0013] The door guide rail includes: a lower guide rail support formed on the upper surface of the lower side beam; and a door housing. The door housing includes: an upper door housing; and a lower door housing disposed at the central longitudinal beam. An upper guide rail guide facing the lower guide rail support is formed in the lower part of the upper door housing.

[0014] The lower guide rail support and the upper surface of the lower side beam together form a closed cross section.

[0015] The central longitudinal beam is shaped to have an open upper surface. An outwardly opening is formed on the side surface of the middle section of the central longitudinal beam. The lower door shell is attached to the central longitudinal beam by inserting into the opening of the central longitudinal beam.

[0016] The vehicle body also includes a central floor, which comprises a central longitudinal beam, a central transverse beam, and a central panel. The central panel is disposed on the upper surface of the central longitudinal beam and the central transverse beam. The upper door shells are coplanar with the central panel.

[0017] The first end of the lower guide rail support and the first end of the upper guide rail guide are located on the inner side of the lower door shell.

[0018] The width of the rear longitudinal beam increases as it extends from the first end to the second end, and decreases as it extends further from the second end to the third end.

[0019] The rear longitudinal beam bends upward as it extends from the second end to the third end.

[0020] The rear suspension also includes shock absorbers and suspension components. The shock absorbers and suspension components are connected to the third end of the rear longitudinal beam.

[0021] According to one or more embodiments of the present invention, a vehicle body may include: a central frame; a rear frame including: a front portion connected to the central frame, a middle portion connected to the rear suspension trailing arm of the vehicle, and a rear portion; a lower side beam disposed along the central frame and the rear frame; and a support bracket connecting the lower side beam to the middle portion of the rear frame.

[0022] The vehicle body also includes: a door rail support, mounted on the lower side beam; and a door shell, including a door rail guide, wherein the door rail guide is configured to face the door rail support.

[0023] The vehicle body also includes: the floor, including the central frame, central crossbeam and central panel.

[0024] The width of the rear frame increases as it extends from the front to the middle, and decreases as it extends from the middle to the rear.

[0025] The rear frame bends upwards as it extends from the middle to the rear. Attached Figure Description

[0026] The above and other aspects, features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, wherein:

[0027] Figure 1 This is a side perspective view of an exemplary vehicle body;

[0028] Figure 2 An enlarged view of the C-pillar region of the lower side beam in an exemplary vehicle is shown;

[0029] Figure 3 The connection between the lower side beam, support bracket, and rear longitudinal beam in an exemplary vehicle is shown.

[0030] Figure 4 This is a bottom view of a portion of an exemplary vehicle body;

[0031] Figure 5 This is a side perspective view of the lower side beam and other components of an exemplary vehicle;

[0032] Figure 6 An enlarged view of the B-pillar region of the lower side beam in an exemplary vehicle is shown;

[0033] Figure 7 It shows along Figure 4 A cross-sectional view taken by line AA in the figure;

[0034] Figure 8 The bottom of an exemplary vehicle body is shown;

[0035] Figure 9 The lower side beam, door rails, and central longitudinal beam of an exemplary vehicle are shown; and

[0036] Figure 10 The central longitudinal beam of an exemplary vehicle is shown. Detailed Implementation

[0037] In the following description of one or more exemplary embodiments of the invention, detailed descriptions of incorporated known techniques will be omitted where such inclusion might obscure the subject matter of the invention. Furthermore, exemplary embodiments of the invention will be more clearly understood through the accompanying drawings and should not be limited thereto. It should be understood that all changes, equivalents, and substitutions that do not depart from the spirit and scope of the invention are included within the scope of the invention. The following description is not intended to limit the invention to the exact forms disclosed or a particular field of use. Therefore, various alternative embodiments and / or modifications (whether explicitly described or implied herein) are possible in consideration of the invention. Those skilled in the art will recognize that changes in form and detail may be made without departing from the scope of the invention.

[0038] The invention will be described with reference to one or more exemplary embodiments. However, as those skilled in the art will understand, the various exemplary embodiments disclosed herein can be modified or implemented in various other ways without departing from the spirit and scope of the invention. Therefore, the following description should be considered illustrative and intended to teach those skilled in the art how to make and use the various exemplary embodiments. It should be understood that the forms of the invention shown and described herein should be considered representative exemplary embodiments. Equivalent elements, materials, processes, or steps may be substituted for those representatively shown and described. Expressions such as “comprising,” “including,” “incorporated,” “consisting of,” “having,” and “is” used to describe the invention are intended to be interpreted in a non-exclusive manner, allowing for the presence of items, components, or elements not explicitly described. Unless explicitly used to the contrary, singular expressions should be interpreted to include the plural meaning.

[0039] For the purposes of this application and claims, the exemplary phrases “at least one: A; B; or C” or “at least one A, B, or C” are used, which means “at least one A, or at least one B, or at least one C, or any combination of at least one A, at least one B, and at least one C.” Furthermore, exemplary phrases such as “A, B, or C,” “at least one of A, B, and C,” “at least one of A, B, or C,” etc., as used herein, may refer to each of the listed items or all possible combinations of the listed items. For example, “at least one of A or B” may refer to (1) at least one A; (2) at least one B; or (3) at least one A and at least one B.

[0040] Furthermore, the various exemplary embodiments disclosed herein should be considered illustrative and explanatory, and in no way should be construed as limiting the invention. All references to connections (e.g., attachment, fixation, combination, connection, etc.) are for the purpose of aiding understanding the invention and should not be limiting, particularly regarding the location, orientation, or use of the disclosed construction or method. Therefore, any reference to connections should be interpreted broadly. Moreover, such references to connections do not necessarily imply that two elements are directly connected to each other. Furthermore, all numerical terms, such as but not limited to “first,” “second,” “third,” “primary,” “secondary,” “main,” or any other ordinal or numerical terms, should also be considered merely as identifiers to aid understanding of the various elements, exemplary embodiments, variations, or modifications of the invention, and do not imply any limitation on the invention, any variation or modification of any element, or any limitation on their order or preference. That is, although such expressions may be used to describe various constituent elements, these constituent elements are not limited by the expressions associated with them. Such expressions are only used to distinguish one constituent element from another.

[0041] The suffixes “module” and “unit” used in this article are for ease of description and are therefore interchangeable, without any distinguishing meaning or function.

[0042] When a component is referred to as "connected" or "linked" to another component, it should be understood that the component can be directly connected or linked to the other component, or that there may be another component between them. Conversely, when a component is referred to as "directly connected" or "directly linked" to another component, it should be understood that there are no other components between them.

[0043] Any number or variety of components of any construction disclosed in this invention may be included in this invention. Such components may include any combination of the feature portions disclosed in this invention and may be arranged to constitute any of the various constructions disclosed in this invention. The structure and arrangement of the components of this invention, as well as the concepts regarding their use and operation, can be applied not only to the specific exemplary embodiments discussed in this invention, but also to any number and combination of exemplary embodiments. In the following description, exemplary embodiments including various feature portions having various arrangements will be described with reference to the accompanying drawings.

[0044] In the following, one or more exemplary embodiments of the invention disclosed herein will be described in detail with reference to the accompanying drawings, and the same or similar elements will be indicated by the same reference numerals, regardless of the numbers in the drawings, and redundant descriptions thereof will be omitted.

[0045] Figure 1 This is a side perspective view of an exemplary vehicle body. Figure 2An enlarged view of the C-pillar region of the lower side beam in an exemplary vehicle is shown. Figure 3 The connection between the lower side beam, support bracket, and rear longitudinal beam in an exemplary vehicle is shown. Figure 4 This is a bottom view of a portion of an exemplary vehicle body. Figure 5 This is a side perspective view of the lower side beam and other components of an exemplary vehicle. Figure 6 An enlarged view of the B-pillar region of the lower side beam in an exemplary vehicle is shown. Figure 7 It shows along Figure 4 The horizontal cross-sectional view taken by line AA in the figure. Figure 8 The bottom of an exemplary vehicle body is shown. Figure 9 The lower side beam, door rails, and central longitudinal beam of an exemplary vehicle are shown. Figure 10 The central longitudinal beam of an exemplary vehicle is shown.

[0046] The vehicle body (e.g., frame) according to the invention includes a rear wheel suspension device 700 (also referred to as rear wheel suspension or rear suspension), which includes a pair of trailing arms 710 and an axle beam configured to connect the trailing arms 710 in the vehicle width direction (e.g., lateral direction); a rear longitudinal beam (also referred to as a rear side portion, rear side frame portion or rear frame) 800, one end of which is connected to a central longitudinal beam 110 (also referred to as a central side portion, central side frame portion or central frame), and the other end of which forms a trailing arm connection portion configured to receive each trailing arm 710 and fasten the trailing arm 710 to the rear longitudinal beam 800; a lower side beam 200 disposed on the side surfaces of the central longitudinal beam 110 and the rear longitudinal beam 800; and a support bracket 900 configured to connect the outer surface of the lower side beam 200 and the outer surface of the trailing arm connecting a portion of the rear longitudinal beam 800.

[0047] Specifically, the rear suspension assembly 700 can be a combined torsion beam axle (CTBA) and can be a non-independent rear suspension system. The rear suspension assembly 700 connects the rear wheels of the vehicle to the vehicle body. The rear suspension assembly 700 may include a pair of trailing arms 710 configured to control the fore-and-aft movement of the rear wheels. The pair of trailing arms 710 can be connected by an axle beam extending along the width direction of the vehicle (e.g., the lateral direction). The axle beam can be a beam configured to connect the left and right rear wheels by connecting the pair of trailing arms 710. The axle beam can allow a certain amount of torsion, thereby enabling suspension operation.

[0048] Each trailing arm 710 can be connected to a rear longitudinal beam 800. Specifically, one end of the rear longitudinal beam 800 can be connected to one end of a central longitudinal beam 110 that forms the central floor 100. The central longitudinal beam 110 can have a rod-like shape extending longitudinally along the vehicle. The central longitudinal beams 110 can be arranged in pairs, such that the pair of central longitudinal beams 110 (e.g., a pair of central side frames) face each other in the vehicle width direction. The pair of central longitudinal beams 110 are connected to each other by a plurality of central transverse beams 120 (also referred to as central transverse sections or central transverse members). That is, the pair of central longitudinal beams 110 and the plurality of central transverse beams 120 are interconnected to provide basic rigidity to the vehicle body. The other end of each central longitudinal beam 110 is connected to a front longitudinal beam 400.

[0049] refer to Figure 3 A trailing arm connector may be formed at the other end of the rear longitudinal beam 800 to receive the trailing arm 710 and attach the trailing arm 710 to the rear longitudinal beam 800. In order to achieve a lower floor height for the vehicle (i.e., a special vehicle), the trailing arm connector 810 may be formed at the other end of the rear longitudinal beam 800 so that the trailing arm 710 can be inserted into the interior of the rear longitudinal beam 800.

[0050] In some implementations, to integrate the existing trailing arm 710 into the rear longitudinal beam 800, a bushing protruding from the lower surface of the rear longitudinal beam 800 may be formed. Due to this configuration, space may need to be provided below the rear longitudinal beam 800. Providing this space may limit the achievement of a lower vehicle floor height.

[0051] In this invention, when the trailing arm 710 is engaged with the rear longitudinal beam 800 in the inserted state, the connection point between the trailing arm 710 and the rear longitudinal beam 800 can be arranged higher. Therefore, the center of rotation of the trailing arm 710 can be raised, allowing the lower structural components to move upwards. Consequently, the vehicle can have additional (e.g., increased) interior space, which in turn allows the vehicle body to be designed with a lower floor height.

[0052] Furthermore, lowering the floor height lowers the vehicle's center of gravity, thereby improving driving stability. Additionally, lowering the overall vehicle height reduces air resistance. Therefore, this improves fuel efficiency and high-speed performance.

[0053] like Figure 3 As shown, if the trailing arm 710 is integrated into the interior of the rear longitudinal beam 800, the cross-section of the other end of the rear longitudinal beam 800 (the location where the trailing arm 710 is integrated into the rear longitudinal beam 800) may be locally weakened. Therefore, rear-end collision performance may be negatively affected. To address this, a support bracket 900 can be introduced to connect the lower side beam 200, which is disposed on the side surface of the rear longitudinal beam 800, to the other end of the rear longitudinal beam 800, specifically, to the trailing arm connection portion 810.

[0054] More specifically, see reference Figure 3 A support bracket 900 can be disposed between the outer surface of the tow arm fastening portion 810 of the tow arm 710 inserted into the rear longitudinal beam 800 and the lower side beam 200. The structure of inserting the tow arm 710 into the rear longitudinal beam 800 is advantageous in terms of low floor height. However, due to this structure, the cross-sectional area of ​​the tow arm connection portion 810 may be reduced. Therefore, it may result in a decrease in stiffness. To compensate for this, the support bracket 900 may be needed to externally reinforce the tow arm connection portion 810. The support bracket 900 connects the rear longitudinal beam 800 to the lower side beam 200, distributing the load and reducing stress concentrated on the rear longitudinal beam 800.

[0055] refer to Figure 2 The outer surface of the lower side beam 200 has an open space. A connecting bracket 210 can be further installed in the open space of the lower side beam 200. The connecting bracket 210 can be connected to the support bracket 900 through the lower side beam 200. Although the connecting bracket 210 is not directly connected to the support bracket 900, the connecting bracket 210 can help enhance the rigidity of the vehicle body because the connecting bracket 210 is indirectly connected to the support bracket 900 through the lower side beam 200.

[0056] In other words, in addition to reinforcing the rear longitudinal beam 800 and the trailing arm connection 810 through the support bracket 900, a multi-stage reinforcement structure can be applied in order to distribute the load acting on the trailing arm connection 810 of the trailing arm 710 to the interior of the lower side beam 200 and effectively enhance the rigidity of the vehicle body.

[0057] The lower side beam 200 is the lower side structure of the vehicle and may include an A-pillar region, a B-pillar region 220, and a C-pillar region 230. The A-pillar region, B-pillar region 220, and C-pillar region 230 may be arranged sequentially from front to rear along the longitudinal direction of the vehicle. On the side surface of the lower side beam 200, the trailing arm connection portion 810 of the rear longitudinal beam 800 faces the rear end region of the lower side beam 200, specifically the C-pillar region 230. In this configuration, a support bracket 900 connects the C-pillar region 230 and the trailing arm connection portion 810 of the rear longitudinal beam 800. According to this configuration, the load acting on the trailing arm connection portion 810, which is inserted into and connected to the trailing arm 710 of the rear longitudinal beam 800, can be effectively transferred and distributed to the C-pillar region 230 of the lower side beam 200. Therefore, the structural stiffness of the trailing arm connection portion 810 can be improved.

[0058] Additionally, refer to Figure 4 and Figure 8In addition to the rear longitudinal beams 800, the rear structure of the vehicle may further include a rear crossbeam 820. The rear crossbeam 820 can be configured to connect a pair of rear longitudinal beams 800 along the vehicle width direction (e.g., the lateral direction) to provide basic rigidity to the vehicle body. Furthermore, a battery mounted to the lower part of the vehicle can be integrated with the rear crossbeam 820 (also referred to as the rear lateral section or rear lateral member). That is, the two side surfaces of the battery are integrated with the vehicle body along the vehicle longitudinal direction via a central longitudinal beam 110, while the rear end of the battery can be connected to the vehicle body along the vehicle width direction via the rear crossbeam 820.

[0059] Sliding doors, configured to open or close longitudinally along the vehicle body, can be installed on the vehicle body. (Reference) Figure 5 and Figure 6 For the application of sliding doors, a door guide rail 300 is provided. The door guide rail 300 is located at the upper end of the lower side beam 200, and a sliding arm is connected to the door guide rail 300, allowing the sliding arm to slide in the direction in which the door guide rail 300 extends. The sliding door is connected to the sliding arm.

[0060] The door guide rail 300 can be formed on the upper surface of the lower side beam 200, but one end of the door guide rail 300 can be bent inward toward the vehicle interior to be disposed inside the central longitudinal beam 110. Since one end of the door guide rail 300 is disposed inside the vehicle, when the sliding door is closed, the sliding door 320 can be coplanar with the outer panels of the vehicle body (e.g., B-pillar, C-pillar, etc.). When the sliding door is open, the sliding door can slide outward beyond the outer panels to prevent interference with other parts of the vehicle body (e.g., contact, providing clearance, etc.).

[0061] As described above, the door guide rail 300 can be configured to allow the door arm 310 to slide longitudinally along the vehicle. The door guide rail 300 may include a lower guide rail support 332 formed on the upper surface of the lower side beam 200 and an upper guide rail guide 331 formed facing the lower guide rail support 332. The door arm 310 may be formed with a roller structure 311. The roller structure 311 is integrated with both the lower guide rail support 332 and the upper guide rail guide 331 to enable sliding longitudinally along the vehicle.

[0062] The upper guide rail guide 331 may be formed on the lower surface of the upper part 301 of the door housing (also referred to as the upper door housing or the upper plate of the door housing). The upper part 301 of the door housing can be used to prevent the upper guide rail guide 331 and the lower guide rail support 332 from being exposed outward. The upper part 301 of the door housing can serve as the upper housing. In addition, the lower part 302 of the door housing (also referred to as the lower door housing or the lower plate of the door housing) is provided at the central longitudinal beam 110 to serve as the lower housing. In addition, as Figure 6 As shown, the upper part 301 of the door housing is coplanar with the central plate on the upper surface of the central longitudinal beam 110 and the central transverse beam 120 that cover the central floor 100.

[0063] refer to Figure 9 and Figure 10 The central longitudinal beam 110 may have a shape with an open upper surface and closed other three surfaces. However, an outwardly opening 111 may be formed on the side surface of the middle portion of the central longitudinal beam 110. The lower part 302 of the door housing is inserted through the opening 111 to allow the central longitudinal beam 110 and the lower part 302 of the door housing to engage with each other. Since the lower part 302 of the door housing also has an open outer surface, one end of the door guide rail 300 is disposed inside the lower part 302 of the door housing. One end of the door guide rail 300 can be considered to be disposed inside the central longitudinal beam 110.

[0064] Since the connecting bracket 210 located at the lower side beam 200 is connected to the door guide rail 300 via the lower side beam 200, an additional load path can be formed to transfer the load generated during a side collision of the vehicle to the door guide rail 300.

[0065] Additionally, refer to Figure 5 The lower guide rail support 332 can be attached to the upper surface of the lower side beam 200 to form a closed cross-section together with the upper surface of the lower side beam 200. The closed cross-section formed by the lower guide rail support 332 and the upper surface of the lower side beam 200 can extend from the C-pillar region 230 to the B-pillar region 220, thereby enhancing the rigidity of the vehicle body.

[0066] refer to Figure 3 The rear longitudinal beam 800 can extend rearward from one end, with its width gradually increasing, and the trailer arm connection portion 810 can be formed at the increased width portion of the rear longitudinal beam 800. That is, in order for the trailer arm 710 to be inserted into the rear longitudinal beam 800, the trailer arm connection portion 810 needs to have a greater width than one end of the rear longitudinal beam 800. Further reference. Figure 7 The rear longitudinal beam 800 can extend further from the trailer boom connection 810 while the width is reduced, thus forming the rear part 830 (also known as the rear end) of the rear longitudinal beam 800.

[0067] The rear portion 830 of the rear longitudinal beam 800 can extend upwardly from the trailing arm connection 810. This structure is necessary because the rear portion 830 of the rear longitudinal beam 800 needs to be integrated with the shock absorber 730 and suspension 720 that constitute the rear wheel suspension device 700.

[0068] According to the present invention, the above and other aspects can be achieved by providing a vehicle body including a rear wheel suspension device comprising: a pair of trailing arms and an axle beam configured to connect the trailing arms along the width direction of the vehicle; a rear longitudinal beam having one end connected to a central longitudinal beam and the other end configured to fasten each trailing arm to the rear longitudinal beam; a lower side beam disposed on the side surfaces of the central longitudinal beam and the rear longitudinal beam; and a support bracket configured to connect the trailing arm connection portion of the lower side beam and the rear longitudinal beam.

[0069] The outer surface of the lower beam can be opened to form an open space. Connecting brackets can be installed in the open space of the lower beam. The connecting brackets can be connected to the supporting brackets via the lower beam.

[0070] The lower beam may include the B-pillar area and the C-pillar area. Support brackets can connect the C-pillar area of ​​the lower beam to the trailing arm connection of the rear longitudinal beam.

[0071] The rear longitudinal beams can be arranged in pairs, such that the pair of rear longitudinal beams are spaced apart from each other along the vehicle width direction. The vehicle body may also include a rear crossbeam that extends along the vehicle width direction and is configured to connect the pair of rear longitudinal beams.

[0072] The battery can be attached to the rear crossbeam along the width of the vehicle.

[0073] The vehicle body may also include: a door rail disposed at the upper end of the lower side beam; and a sliding arm to which a sliding door is coupled, the sliding arm being slidably coupled to the door rail.

[0074] One end of the door guide rail can be set inside the central longitudinal beam.

[0075] The door guide rail may include: a lower guide rail support formed on the upper surface of the lower side beam; an upper guide rail guide formed on the lower part of the door housing facing the lower guide rail support; and a lower part of the door housing disposed at the central longitudinal beam.

[0076] The lower guide rail support can form a closed cross-section together with the upper surface of the lower side beam.

[0077] The central longitudinal beam can be formed with an open upper surface. An outwardly opening can be formed on the side surface of the middle portion of the central longitudinal beam. The lower part of the door housing can be attached to the central longitudinal beam by inserting into the opening of the central longitudinal beam.

[0078] The vehicle body may also include a central floor, which comprises a central longitudinal beam, a central transverse beam, and a central plate disposed on the upper surfaces of the central longitudinal beam and the central transverse beam. The upper part of the door housing may be coplanar with the central plate.

[0079] One end of the lower guide rail support and one end of the upper guide rail guide can be located inside the lower part of the door housing.

[0080] The rear longitudinal beam can extend from one end, with its width gradually increasing to form a trailing arm connection, and can extend further from the trailing arm connection, with its width decreasing to form the rear section.

[0081] The rear section can bend upwards from the trailer arm connection.

[0082] The rear suspension system may further include shock absorbers and suspension components. The shock absorbers and suspension components may be integrated into the rear of the rear longitudinal beam.

[0083] The vehicle body according to the present invention ensures rear-end collision performance for dedicated vehicles with low floor height.

[0084] The effects that can be obtained in this invention are not limited to those described above, and other effects of this invention not described will be more clearly understood by those skilled in the art through the above description.

[0085] Although one or more exemplary embodiments of the invention have been disclosed above for illustrative purposes, those skilled in the art will understand that various modifications, additions, and substitutions may be made without departing from the scope and spirit of the invention as disclosed in the appended claims.

Claims

1. A vehicle body, the vehicle body comprising: Rear suspension, including: A pair of tow arms, and The axle beam that connects the trailer arm laterally along the vehicle; The rear longitudinal beam has its first end connected to the central longitudinal beam of the vehicle body and its second end connected to one of the two trailing arms. The lower beam is disposed on the side surface of the central longitudinal beam and the rear longitudinal beam; and A support bracket connects the lower side beam to the second end of the rear longitudinal beam.

2. The vehicle body according to claim 1, wherein, The outer surface of the lower beam is open to form an open space, and The vehicle body also includes a connecting bracket, which is disposed in the open space of the lower side beam and connected to the support bracket through the lower side beam.

3. The vehicle body according to claim 2, wherein: The lower beam includes the B-column area and the C-column area, and The support bracket connects the C-column area of ​​the lower side beam to the second end of the rear longitudinal beam.

4. The vehicle body according to claim 1, wherein, The rear longitudinal beams include a pair of rear longitudinal beams spaced apart from each other along the transverse direction of the vehicle, and The vehicle body also includes: The rear crossbeam extends laterally along the vehicle and is configured to connect the pair of rear longitudinal beams.

5. The vehicle body according to claim 4, wherein, The rear crossbeam is connected to the battery along the vehicle's transverse direction.

6. The vehicle body according to claim 2, further comprising: The door guide rail is located at the upper end of the lower beam; A sliding arm is slidably coupled to the door guide rail; as well as The sliding door is attached to the sliding arm.

7. The vehicle body according to claim 6, wherein, The first end of the door guide rail is located on the inner side of the central longitudinal beam.

8. The vehicle body according to claim 6, wherein, The door guide rail includes: A lower guide rail support is formed on the upper surface of the lower side beam; and The door shell includes: An upper door housing, wherein an upper guide rail guide is formed at the lower part of the upper door housing facing the lower guide rail support; and The lower door housing is located at the central longitudinal beam.

9. The vehicle body according to claim 8, wherein, The lower guide rail support and the upper surface of the lower side beam together form a closed cross-section.

10. The vehicle body according to claim 8, wherein, The central longitudinal beam is shaped to have an open upper surface. An outwardly opening is formed on the side surface of the middle portion of the central longitudinal beam, and The lower door housing is attached to the central longitudinal beam by inserting it into the opening of the central longitudinal beam.

11. The vehicle body according to claim 8, further comprising: The central floor, including the central longitudinal beam, central transverse beam, and central slab, The central plate is disposed on the upper surface of the central longitudinal beam and the central transverse beam, and The upper door shell is coplanar with the central panel.

12. The vehicle body according to claim 10, wherein, The first end of the lower guide rail support and the first end of the upper guide rail guide are disposed on the inner side of the lower door shell.

13. The vehicle body according to claim 1, wherein, The width of the rear longitudinal beam increases as it extends from the first end to the second end, and the width of the rear longitudinal beam decreases as it further extends from the second end to the third end.

14. The vehicle body according to claim 13, wherein, The rear longitudinal beam bends upward as it extends from the second end to the third end.

15. The vehicle body according to claim 14, wherein, The rear suspension also includes shock absorbers and suspension components, and The shock absorber and the suspension are connected to the third end of the rear longitudinal beam.

16. A vehicle body, the vehicle body comprising: Central framework; The post-framework includes: Connected to the front of the central frame. Connected to the middle of the rear suspension trailing arm of the vehicle, and rear; The lower beam is arranged along the central frame and the rear frame; and A support bracket connects the lower side beam to the middle of the rear frame.

17. The vehicle body according to claim 16, further comprising: The door guide rail support is mounted on the lower side beam; as well as A door housing includes a door rail guide member, wherein the door rail guide member is configured to face the door rail support member.

18. The vehicle body according to claim 16, further comprising: The floor includes the central frame, central beam, and central slab.

19. The vehicle body according to claim 16, wherein, The width of the rear frame increases as it extends from the front to the middle, and decreases as it extends from the middle to the rear.

20. The vehicle body according to claim 16, wherein, The rear frame bends upward as it extends from the middle section to the rear section.

Images