Rear body structure

Abstract

The present application relates to a rear body structure. An embodiment of the rear body structure of a vehicle including a vehicle body bottom and an upper vehicle body coupled to the vehicle body bottom includes a reinforcement member coupled to an upper surface of a rear floor panel disposed on a rear side of the upper vehicle body and connected to two chassis frames of the vehicle body bottom through the rear floor panel.

Description

Technical Field

[0001] Embodiments of the present invention relate to a vehicle body structure. More specifically, embodiments of the present invention relate to a rear body structure for a private vehicle (PBV). Background Technology

[0002] Recently, the automotive industry has introduced new concepts for the vision of future mobility to realize dynamic, human-centered future cities. One of these future mobility solutions is the PBV (Purpose-Based Vehicle) as a purpose-based mobility solution.

[0003] PBV is an environmentally friendly mobility solution that provides occupants with the customized services they need during the time they travel to their destination by ground, and it can also use electric vehicles and artificial intelligence to set up optimal routes and swarm driving for each situation.

[0004] The body of a PBV consists of a body floor (also known in the industry as a rolling chassis or skid plate) and an upper body mounted on the body floor.

[0005] Here, the battery module is mounted on the bottom of the vehicle body. Furthermore, the upper body can be a space frame composed of welded steel plates or steel tubes, and is mounted on the bottom of the vehicle body via compartment components.

[0006] The rear body structure of this PBV mounts the rear seats on the wheel arch side. Therefore, in order to prevent submarine-like behavior, the floor body must usually be arranged with an upward slope. However, when the floor is arranged upward, it is difficult to install the rear struts and rear side members, making it difficult to achieve a body that prevents submarine-like behavior.

[0007] In addition, traditionally, the strength of the vehicle frame and its crash performance can be degraded due to insufficient joint strength between the bottom of the vehicle and the upper body, and can result in damage to the battery module due to rear-end collisions.

[0008] The information disclosed in the background section is only for enhancing the understanding of the background of the present invention. Therefore, the above information may include information that does not constitute prior art known to those skilled in the art in this country. Summary of the Invention

[0009] An embodiment of the present invention provides a rear vehicle body structure that increases the frame strength at the rear of the vehicle body and improves rear collision performance.

[0010] As a rear body structure of a vehicle including a vehicle bottom and an upper body coupled to the vehicle bottom, the rear body structure according to an embodiment of the present invention may include a reinforcing member coupled to the upper surface of a rear floor plate disposed on the rear side of the upper body and connected to two chassis frames at the bottom of the vehicle through the rear floor plate.

[0011] In the rear vehicle structure according to an embodiment of the present invention, the two ends of the reinforcing member can be connected to two rear quarter parts of the upper vehicle body.

[0012] In the rear vehicle structure according to an embodiment of the present invention, both ends of the reinforcing member can be connected to the wheel covers of the rear side component.

[0013] In the rear vehicle structure according to an embodiment of the present invention, the two ends of the reinforcing member can be connected to the two rear struts of the upper vehicle body.

[0014] In the rear vehicle structure according to an embodiment of the present invention, the side reinforcement members can be coupled to the wheel arches in the vertical direction via two chassis frames.

[0015] In the rear vehicle structure according to an embodiment of the present invention, the rear seat may be mounted on a reinforcing member.

[0016] In the rear vehicle structure according to an embodiment of the present invention, the reinforcing member may form a seat mounting surface that is mountain-shaped and tilted forward and backward.

[0017] In the rear vehicle structure according to an embodiment of the present invention, the reinforcing member may overlap with the rear side of the two chassis frames in the vertical direction.

[0018] In the rear vehicle structure according to an embodiment of the present invention, the reinforcing member, the two rear pillars of the upper body, and the two chassis frames at the bottom of the vehicle body are connected to the side reinforcing member as annular members via wheel covers.

[0019] In the rear vehicle structure according to an embodiment of the present invention, the reinforcing member may include: a first part that forms a rear seat mounting surface and overlaps with two chassis frames in the vertical direction; a second part that is integrally connected to the first part and forms a front seat mounting surface; and a third part that is integrally connected to both sides of the second part and coupled to two rear pillars of the upper vehicle body.

[0020] The embodiments of the present invention can increase the strength of the rear frame of the vehicle body bottom and upper body and can increase the rear collision performance of the vehicle.

[0021] Furthermore, the effects that can be obtained or anticipated from embodiments of the present invention are described directly or implicitly in the following Detailed Description section. That is, various effects anticipated from embodiments of the present invention will be described in the following Detailed Description section. Attached Figure Description

[0022] In describing embodiments of the present invention, accompanying drawings are provided for reference, and the spirit of the invention should not be interpreted solely from the drawings.

[0023] Figure 1 This is a view showing an example of a vehicle to which a rear body structure according to an embodiment of the present invention can be applied.

[0024] Figures 2 to 4 These are views showing the rear vehicle body structure according to embodiments of the present invention.

[0025] Figures 5 to 8 These are views showing the reinforcing member combination structure applied to the rear vehicle body structure according to an embodiment of the present invention. Detailed Implementation

[0026] The invention will now be described more fully with reference to the accompanying drawings, in which embodiments of the invention are illustrated. As those skilled in the art will recognize, the described embodiments may be modified in various ways without departing from the spirit or scope of the invention.

[0027] For clarity in describing the invention, components irrelevant to the description will be omitted, and throughout this specification, the same reference numerals will be used to describe the same components.

[0028] For better understanding and ease of description, the dimensions and thicknesses of each structure shown in the accompanying drawings are shown arbitrarily, but the invention is not limited thereto, and for clarity, the thicknesses of layers, films, panels, regions, etc., are enlarged.

[0029] In the following detailed description, the names of components with the same relationship are categorized as "first", "second", etc., but the present invention is not limited to the order in the following description.

[0030] Furthermore, unless explicitly stated otherwise, the word “comprise” and variations such as “comprises” or “comprising” will be understood to imply inclusion of the described element, but not to exclude any other element.

[0031] Furthermore, the terms “...unit”, “...device”, “...component” and “...building” described in this specification refer to a unit in a general configuration that performs at least one function or operation.

[0032] Figure 1 This is a view showing an example of a vehicle to which a rear body structure according to an embodiment of the present invention can be applied.

[0033] refer to Figure 1 For example, embodiments of the present invention can be applied to special-purpose vehicles (hereinafter referred to as PBVs).

[0034] A PBV is an environmentally friendly mobility vehicle based on electric vehicles that provides passengers with the customized services they need during their journey to their destination on the ground. PBVs can be configured with optimal routes and convoy driving for every situation, and can also be box-type vehicles with large interior space.

[0035] This PBV includes a skateboard-type body bottom 10 (also known in the art as a rolling chassis) and an upper body 20 mounted on the body bottom 10.

[0036] The battery assembly 1 can be mounted on the bottom of the vehicle body 10, and the bottom of the vehicle body 10 forms chassis frames 11 on both sides. Here, the drive motor (not shown) can be mounted on the rear side of the two chassis frames 11. Therefore, the motor mounting component 13 for mounting the drive motor is provided on the rear side of the chassis frame 11.

[0037] The upper body 20 is a body coupled to the lower body 10 and forms a compartment in the central part between the front and rear parts. For example, it can be a space frame made of a skeleton by connecting steel plates or steel tubes.

[0038] The upper body 20 forms side components 21 on both sides. The side components 21 are combined with two chassis frames 11 of the body bottom 10. The side components 21 form a front strut 22 on the front part, a rear strut 23 on the rear part, and a central strut 24 between the front part and the rear part.

[0039] Furthermore, the side assembly 21 forms rear side parts 25 on both sides of the rear portion. Additionally, wheel covers 26 are formed within the rear side parts 25. Moreover, in the upper body 20, a rear floor plate 27 is mounted between the rear side parts 25. The rear floor plate 27 is coupled to the rear side of the chassis frame 11.

[0040] In this industry, the vehicle width direction is referred to as the L direction, the vehicle length direction (the front-to-back direction of the vehicle body) is referred to as the T direction, and the vehicle height direction is referred to as the H direction. However, in embodiments of the present invention, the components described below are defined by the vehicle width direction, the vehicle length direction, and the vehicle height direction, rather than by defining the LTH direction as the reference direction as described above.

[0041] Furthermore, the term "end" (one side end or the other side end) in the following text can be defined as an end on any side and a specific portion (one side component or the other side end) that includes that end.

[0042] The rear vehicle structure 100 according to an embodiment of the present invention has a structure that can increase the frame strength of the rear side of the vehicle body and increase the rear collision performance of the vehicle body.

[0043] Figures 2 to 4These are views showing the rear vehicle body structure according to embodiments of the present invention.

[0044] refer to Figures 2 to 4 According to an embodiment of the present invention, the rear vehicle structure 100 mainly includes a reinforcing member 30 disposed on the rear side of the upper vehicle body 20.

[0045] In an embodiment of the invention, the reinforcing member 30 is used to increase the rear side strength of the vehicle body and improve the rear-impact performance of the vehicle body. The reinforcing member 30 is configured to be curved and molded into a panel of a predetermined shape.

[0046] The reinforcing member 30 is coupled to the upper surface of the rear floor plate 27 and connected via the rear floor plate 27 to two chassis frames 11 at the bottom of the vehicle body 10. In the following text, the two chassis frames 11 refer to the rear-side components of the chassis frames 11.

[0047] Meanwhile, the reinforcing member 30 described above is connected to the two chassis frames 11 at the bottom of the vehicle body 10 via the rear bottom plate 27, and the rear bottom plate 27 is engaged with the two chassis frames 11 via the engaging member 29.

[0048] The coupling component 29 can be used as bolts and nuts to connect the chassis frame 11 and the rear bottom plate 27 via the mounting bracket 29a fixed to the chassis frame 11. In this case, the reinforcing member 30 is coupled to both sides of the rear bottom plate 27 fixed to the chassis frame 11 via the coupling component 29.

[0049] In the following text, in conjunction with the appendix disclosed above... Figure 1 The configuration and connection structure of the reinforcing member 30 are described in detail with reference to the accompanying drawings.

[0050] Figures 5 to 8 These are views showing the reinforcing member combination structure applied to the rear vehicle body structure according to an embodiment of the present invention.

[0051] refer to Figures 5 to 8 The reinforcing member 30 is joined to two rear side parts 25 of the upper body 20 at both ends. The components at both ends of the reinforcing member 30 are welded to the wheel covers 26 of the two rear side parts 25.

[0052] Furthermore, the reinforcing member 30 is coupled to the two rear struts 23 of the upper body 20 at both ends. The remaining portions of the two ends of the reinforcing member 30 are welded to the bottom of the two rear struts 23.

[0053] Here, the reinforcing member 30 is welded to the wheel arch 26 and the rear strut 23 via flanges 31 located at both ends. Furthermore, in the wheel arch 26 described above, the side reinforcing member 28 is coupled vertically to both the chassis frame 11 and the rear floor plate 27 of the vehicle body bottom 10.

[0054] Meanwhile, as described above, the reinforcing member 30 is installed such that it overlaps with the upper surface of the chassis frame 11 in the vertical direction via the rear base plate 27. That is, the reinforcing member 30 overlaps with the rear side of the chassis frame 11 on the aforementioned motor mounting component 13 in the vertical direction.

[0055] Therefore, in an embodiment of the present invention, the reinforcing member 30 forms a rigid section 63 to protect the drive motor 61 mounted on the motor mounting component 13 in the chassis frame 11.

[0056] On the other hand, the rear seat 71 is mounted on the reinforcing member 30 on the side of the wheel cover 26. In this way, in order to mount the rear seat 71 on the reinforcing member 30, the reinforcing member 30 forms seat mounting surfaces 41 and 42 that are inclined forward and backward in a mountain shape.

[0057] Specifically, the reinforcing member 30 includes a first part 51, a second part 52, and a third part 53 that are integrally connected to each other.

[0058] The first part 51 is a component that overlaps with the two chassis frames 11 in the vertical direction and forms a seat mounting surface 41 on the rear side. The two ends of the first part 51 are coupled to the wheel covers 26.

[0059] The second part 52 is integrally connected to the first part 51 and forms a seat mounting surface 42 on the front side. The two ends of the second part 52 are coupled to the wheel cover 26.

[0060] The third part 53 is integrally connected to both sides of the second part 52 and coupled to the wheel cover 26 and the two rear pillars 23.

[0061] Here, the rear seat mounting surface 41 supports the rear side of the rear seat 71, and the rear side of the rear seat 71 can be engaged with the rear base plate 27 by means of a first mounting member 73 such as a bolt.

[0062] Furthermore, the front seat mounting surface 42 supports the front side of the rear seat 71, and the front side of the rear seat 71 can engage with the front seat mounting surface 42 via a second mounting member 75 such as a hook.

[0063] On the other hand, according to an embodiment of the present invention, the reinforcing member 30 forms an annular structure 81 for increasing the strength of the rear side of the vehicle body (see reference). Figure 8 ).

[0064] The annular structure 81 has a structure in which the reinforcing member 30, two rear struts 23, and two chassis frames 11 are connected in annularly. This annular structure 81 can be connected to the aforementioned side reinforcing member 28 via wheel covers 26.

[0065] In the following, the operational effects of the rear vehicle body structure 100 configured as described above according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings disclosed above.

[0066] First, in an embodiment of the present invention, a reinforcing member 30 is installed, which is coupled to the upper surface of the rear bottom plate 27 on the rear side of the upper vehicle body 20 and connected to the two chassis frames 11 of the vehicle body bottom 10 through the rear bottom plate 27.

[0067] Here, the two ends of the reinforcing member 30 are coupled to the wheel cover 26 of the rear component 25 and the two rear pillars 23, wherein the side reinforcing members 28 are coupled in the vertical direction. Moreover, the reinforcing member 30 is mounted to overlap the rear side of the chassis frame 11 on the motor mounting component 13 in the vertical direction.

[0068] Therefore, the reinforcing member 30 forms a rigid section 63 on the rear side of the chassis frame 11 to protect the drive motor 61 mounted on the motor mounting component 13 in the chassis frame 11.

[0069] Therefore, in embodiments of the present invention, damage to the battery assembly 1 can be prevented during a rear-end collision of the vehicle when the drive motor 61 mounted on the motor mounting component 13 enters the mounting space of the battery assembly 1.

[0070] Furthermore, in an embodiment of the invention, the reinforcing member 30, the two rear struts 23, and the two chassis frames 11 form a ring structure 81, which is connected to the side reinforcing member 28 via the wheel cover 26.

[0071] Therefore, in an embodiment of the present invention, the chassis frame 11 and the two rear pillars 23 are connected by a reinforcing member 30 and form a path leading to the side reinforcing member 28 of the wheel arch 26, thereby increasing the strength of the input point of the reinforcing member 30 and the strength of the rear of the vehicle body.

[0072] Furthermore, in embodiments of the present invention, the reinforcing member 30 serves as a seat lateral member for mounting the rear seat 71, and the rear seat 71 can be mounted on seat mounting surfaces 41 and 42 in the form of a mountain-shaped member inclined toward the front and rear of the reinforcing member 30.

[0073] Therefore, in an embodiment of the invention, by mounting the rear seat 71 on the reinforcing member 30, when the vehicle collides at the front of the vehicle, the occupants move downwards, thereby preventing submarine-like injuries such as intestinal rupture.

[0074] This application claims priority to Korean Patent Application No. 10-2020-0175132, filed on December 15, 2020, which is incorporated herein by reference.

[0075] While the invention has been described in conjunction with embodiments now considered practical, it should be understood that the invention is not limited to the disclosed embodiments. Rather, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

[0076] Symbol Explanation

[0077] 1: Battery Components

[0078] 10: Bottom of the vehicle body

[0079] 11: Chassis frame

[0080] 13: Motor mounting components

[0081] 20: Upper body

[0082] 21: Side component

[0083] 22: Front pillar

[0084] 23: Rear pillar

[0085] 24: Central Pillar

[0086] 25: Rear side components

[0087] 26: Wheel Cover

[0088] 27: Rear floor plate

[0089] 28: Side reinforcement members

[0090] 29: Joining components

[0091] 29a: Mounting bracket

[0092] 30: Reinforcing components

[0093] 31: Flange

[0094] 41, 42: Seat mounting surface

[0095] 51, 52, 53: Part One, Part Two, and Part Three

[0096] 61: Drive motor

[0097] 63: Rigid Section

[0098] 71: Rear Seats

[0099] 73, 75: First mounting component and second mounting component

[0100] 81: Ring structure

[0101] 100: Rear Body Structure

[0102] Although the invention has been described with reference to illustrative embodiments, this description is not intended to be limiting. Various modifications and combinations of the illustrative embodiments and other embodiments of the invention will be apparent to those skilled in the art from the description. Therefore, the appended claims are intended to cover any such modifications or embodiments.

Claims

1. A rear body structure of a vehicle, the rear body structure comprising a body bottom having two chassis frames and an upper body coupled to the body bottom, wherein, The rear vehicle structure includes: A reinforcing member coupled to the upper surface of a rear floor plate positioned on the rear side of the upper vehicle body, and the reinforcing member being connected via the rear floor plate to two chassis frames at the bottom of the vehicle body; The rear seat is mounted on the reinforcing member; The reinforcing member forms a seat mounting surface, and the seat mounting surface has a mountain-shaped profile that slopes towards the front and rear sides of the reinforcing member; and The reinforcing member includes: The first part forms the rear seat mounting surface and overlaps with the two chassis frames in the vertical direction; The second part is integrally connected to the first part and forms the front seat mounting surface; and The third part is integrally connected to both sides of the second part and coupled to the two rear pillars of the upper body.

2. The rear body structure according to claim 1, wherein Each end of the reinforcing member is connected to a corresponding rear component of the upper body.

3. The rear vehicle body structure according to claim 2, wherein, Each end of the reinforcing member is connected to the corresponding wheel cover of the corresponding rear component.

4. The rear vehicle body structure according to claim 2, wherein, Each end of the reinforcing member is connected to a corresponding rear strut of the upper body.

5. The rear vehicle body structure according to claim 3, wherein, Each of the two side reinforcement members is coupled to the corresponding wheel cover in the vertical direction via the corresponding chassis frame.

6. The rear vehicle body structure according to claim 1, wherein, The reinforcing member overlaps with the rear side of the two chassis frames in the vertical direction.

7. The rear vehicle body structure according to claim 5, wherein, The ring-shaped reinforcing member, the two rear pillars of the upper body, and the two chassis frames at the bottom of the body are connected to each side reinforcing member via the corresponding wheel covers.

8. A vehicle, wherein, The vehicles include: The bottom of the vehicle body has two chassis frames; Upper body, the upper body being coupled to the bottom of the vehicle body; and Rear vehicle structure, the rear vehicle structure comprising: A reinforcing member coupled to the upper surface of a rear floor plate positioned on the rear side of the upper vehicle body, and the reinforcing member being connected via the rear floor plate to two chassis frames at the bottom of the vehicle body; The rear seat is mounted on the reinforcing member; The reinforcing member forms a seat mounting surface, and the seat mounting surface has a mountain-shaped profile that slopes towards the front and rear sides of the reinforcing member; and The reinforcing member includes: The first part forms the rear seat mounting surface and overlaps with the two chassis frames in the vertical direction; The second part is integrally connected to the first part and forms the front seat mounting surface; and The third part is integrally connected to both sides of the second part and coupled to the two rear pillars of the upper body.

9. The vehicle according to claim 8, wherein, Each end of the reinforcing member is connected to a corresponding rear component of the upper body.

10. The vehicle according to claim 9, wherein, Each end of the reinforcing member is connected to the corresponding wheel cover of the corresponding rear component.

11. The vehicle according to claim 9, wherein, Each end of the reinforcing member is connected to a corresponding rear strut of the upper body.

12. The vehicle according to claim 10, wherein, Each of the two side reinforcement members is coupled to the corresponding wheel cover in the vertical direction via the corresponding chassis frame.

13. The vehicle according to claim 8, wherein, The reinforcing member overlaps with the rear side of the two chassis frames in the vertical direction.

14. The vehicle according to claim 12, wherein, The ring-shaped reinforcing member, the two rear pillars of the upper body, and the two chassis frames at the bottom of the body are connected to each side reinforcing member via the corresponding wheel covers.

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