Rear automobile body structure and automobile with same

Abstract

The rear vehicle body structure comprises a rear floor, a mounting and connecting structure and a rear anti-collision beam, the mounting and connecting structure comprises a rear longitudinal beam, the rear longitudinal beam is arranged between the rear anti-collision beam and the rear floor, the rear anti-collision beam is detachably connected with the mounting and connecting structure, a plurality of cavities are formed in the rear longitudinal beam, and the rear anti-collision beam is detachably connected with the mounting and connecting structure. At least one of the cavities is used for installing a towing hook. The rear anti-collision beam is detachably connected to the rear longitudinal beam, and the multi-cavity structure is arranged in the rear longitudinal beam, so that not only can the structural strength of the rear part of the vehicle body be improved, but also the towing hook longitudinal beam can conveniently extend into the multi-cavity structure, the towing hook can be conveniently replaced and mounted, and the mounting height of the towing hook is basically the same as that of the rear anti-collision beam; the influence on the departure angle and the ground clearance of the vehicle after reloading is small, and the trafficability of the vehicle can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle body structures, in particular to a rear vehicle body structure and a car with the rear vehicle body structure. Background Art

[0002] In order to allow travelers to enjoy the comfort and convenience of home during their journey, RVs have become a popular type of vehicle. They can be roughly divided into two types: self-propelled and trailer-type. Among them, trailer-type RVs are different from self-propelled RVs. Trailer-type RVs have no power of their own and require additional vehicles to tow them.

[0003] At present, in order to enable a vehicle to have the function of towing a caravan, users usually modify the rear structure of the vehicle body to meet their living needs. However, the rear structure of the vehicle body of an ordinary vehicle model is difficult to meet the performance requirements (mainly strength requirements) of the tow hook beam, so that the modified vehicle not only has the problem of low connection strength when towing a caravan, but also, since the tow hook beam is generally installed under the longitudinal beam, the departure angle and ground clearance of the vehicle are reduced, which has a great impact on the vehicle's passability. Utility Model Content

[0004] In view of this, the first object of the present invention is to provide a rear vehicle body structure that can solve the problem of low strength of the rear vehicle body structure in the prior art.

[0005] The second object of the present invention is to provide a car with the rear body structure.

[0006] In order to achieve the above-mentioned technical objectives, the first aspect of the present invention provides a rear vehicle body structure, including a rear floor, a mounting and connecting structure, and a rear anti-collision beam, the mounting and connecting structure including a rear longitudinal beam, the rear longitudinal beam being arranged between the rear anti-collision beam and the rear floor, the rear anti-collision beam being detachably connected to the mounting and connecting structure, and a plurality of cavities being provided in the rear longitudinal beam, at least one of the plurality of cavities being used for installing a tow hook.

[0007] In one embodiment, the plurality of cavities include a first cavity and a second cavity arranged side by side along the width direction of the rear longitudinal beam, and the first cavity is used for a portion of the towing hook to extend into.

[0008] In one embodiment, a mounting hole for fixing the towing hook is formed on a side wall of the first cavity, and the rear longitudinal beam is fixedly connected to the towing hook via a fixing member passing through the mounting hole.

[0009] In one embodiment, the mounting and connecting structure further includes a longitudinal beam sealing plate connected between the rear longitudinal beam and the rear anti-collision beam, and the longitudinal beam sealing plate is provided with avoidance holes corresponding to the plurality of cavities.

[0010] In one embodiment, the mounting and connecting structure further includes a first connecting plate and a second connecting plate, wherein the first connecting plate is arranged at the front end of the rear longitudinal beam for connecting to the rear floor; the second connecting plate is arranged at the rear end of the rear longitudinal beam for connecting to the longitudinal beam cover plate.

[0011] In one embodiment, the first connecting plate is provided on two opposite sides of the front end of the rear longitudinal beam, extending along the length direction of the rear longitudinal beam, and there are multiple connection points between the first connecting plate and the rear longitudinal beam; the second connecting plate is provided on at least two opposite sides of the rear end of the rear longitudinal beam, and a portion of the second connecting plate is fixedly connected to the rear longitudinal beam, and the other portion extends in a direction perpendicular to the length direction of the rear longitudinal beam.

[0012] In one embodiment, an extending portion of the second connecting plate in a direction perpendicular to the length direction of the rear longitudinal beam is flush with a rear end surface of the rear longitudinal beam.

[0013] In one embodiment, a rear panel is further included between the rear longitudinal beam and the rear anti-collision beam.

[0014] In one embodiment, a rear guard is further included, and an avoidance groove is opened on the rear guard.

[0015] The second aspect of the present invention provides an automobile, comprising a tow hook and a rear vehicle body structure as described in the above technical solution. When the rear anti-collision beam is removed from the rear vehicle body structure, a portion of the tow hook extends into at least one of the multiple cavities and is detachably connected to the mounting connection structure, maintaining the installation height of the tow hook the same as the installation height of the rear anti-collision beam.

[0016] By adopting the above technical solution, the utility model has the following beneficial effects:

[0017] The utility model connects the rear anti-collision beam to the rear longitudinal beam in a detachable manner and provides a multi-cavity structure in the rear longitudinal beam, which not only improves the structural strength of the rear body of the vehicle, but also the multi-cavity structure can facilitate the insertion of the tow hook longitudinal beam, making it easy to replace the tow hook, and making the installation height of the tow hook basically the same as the installation height of the rear anti-collision beam, so that the impact on the departure angle and ground clearance of the vehicle after the replacement is small, which is beneficial to ensuring the vehicle's passability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of a rear vehicle body structure provided by an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A schematic diagram of the structure of the rear floor, mounting connection structure and rear panel in the rear vehicle body structure shown;

[0021] Figure 3 for Figure 2 The schematic diagram of the rear floor, mounting connection structure, rear panel and tow hook shown;

[0022] Figure 4 for Figure 3 Schematic diagram of the exploded structure of the rear floor, mounting connection structure and tow hook shown;

[0023] Figure 5 for Figure 4 The schematic diagram of the structure of the rear longitudinal beam, the first connecting plate and the second connecting plate in the exploded structure shown.

[0024] Description of reference numerals:

[0025] 1. Rear floor; 2. Installation connection structure; 3. Rear anti-collision beam; 4. Rear panel; 5. Tow hook;

[0026] 21. Rear longitudinal beam; 22. Longitudinal beam cover plate; 23. First connecting plate; 24. Second connecting plate;

[0027] 211, cavity; 211a, first cavity; 211b, second cavity; 212, mounting hole;

[0028] 221, avoidance hole;

[0029] 31. Main beam; 32. Energy absorption box; 33. End plate;

[0030] 41. Assembly hole;

[0031] 51. Tow hook body; 52. Tow hook crossbeam; 53. Tow hook longitudinal beam. DETAILED DESCRIPTION

[0032] Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the description of the present invention, all other embodiments derived by persons of ordinary skill in the art without inventive effort are also within the scope of protection of the present invention.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "disposed," "installed," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms based on the specific circumstances.

[0034] The directions or positional relationships indicated by terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience and simplification of description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the utility model.

[0035] The terms "first," "second," "third," etc. are merely used to distinguish elements of similar nature and do not indicate or imply relative importance or a particular order.

[0036] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of elements other than the listed elements and may also include additional elements not specifically listed.

[0037] See also Figure 1 、 Figure 2 and Figure 3An embodiment of the first aspect of the present invention provides a rear vehicle body structure comprising a rear floor panel 1, a mounting and connecting structure 2, a rear anti-collision beam 3, and a tow hook 5. The mounting and connecting structure 2 is mounted between the rear floor panel 1 and the rear anti-collision beam 3, and the rear anti-collision beam 3 and the tow hook 5 are selectively and detachably mounted on the mounting and connecting structure 2. This facilitates the removal of the rear anti-collision beam 3 from the mounting and connecting structure 2, allowing the tow hook 5 to replace the position where the rear anti-collision beam 3 was originally mounted, thereby enabling the vehicle to tow a recreational vehicle. Furthermore, after the tow hook 5 is installed, the vertical installation height of the tow hook 5 is the same as that of the rear anti-collision beam 3. Compared to the prior art arrangement of mounting the tow hook below the rear longitudinal beam, the present invention is more effective in ensuring the vehicle's ability to navigate rough terrain after the tow hook 5 is installed. The rear floor 1 referred to herein can be an integrally formed component comprising the wheel arch, side rails, seat crossbars, rear floor crossbars, and rear floor cover, or an integrally formed component comprising a portion of the aforementioned components. This reduces the need for welding between different components and enhances structural strength. Preferably, the rear floor 1 is made of cast aluminum. The rear anti-collision beam 3 referred to herein is a metal rod in the vehicle body structure used to absorb and disperse collision energy. It is located at the rear of the vehicle body and its primary function is to protect the safety of the vehicle's passengers.

[0038] like Figure 4 and Figure 5 As shown, the mounting and connecting structure 2 includes a rear longitudinal beam 21. The rear longitudinal beam 21 is a rectangular hollow beam with one end fixedly connected to the rear floor 1 and the other end detachably connected to the rear anti-collision beam 3 or the tow hook 5. In some embodiments, there can be multiple rear longitudinal beams 21. In this embodiment, there are two rear longitudinal beams 21. When two rear longitudinal beams 21 are connected to the rear anti-collision beam 3, the rear of the vehicle can absorb and dissipate collision energy. When two rear longitudinal beams 21 are connected to the tow hook 5, the rear of the vehicle can be used to tow a recreational vehicle, allowing for interchangeable installations according to user needs. It should be noted that the tow hook 5 mentioned here comprises a tow hook body 51, a tow hook crossbeam 52, and a tow hook crossbeam 53. The tow hook body 51 is located in the middle of the tow hook crossbeam 52 and extends rearward, used to tow a recreational vehicle or a following vehicle. The tow hook crossbeam 53 is located at the end of the tow hook crossbeam 52 and extends forward, relative to the tow hook body 51, and is connected to the rear longitudinal beam 21. In some embodiments, there can be multiple towing hook longitudinal beams 53. In this embodiment, there are two towing hook longitudinal beams 53. The two towing hook longitudinal beams 53 are respectively located at the two ends of the towing hook cross beam 52 and can extend into the two rear longitudinal beams 21, which helps to ensure that the replaced towing hook 5 can be located within the required installation height range.

[0039] Furthermore, simulation tests of longitudinal beam structural performance indicate that, generally, the greater the number of chamfers in a longitudinal beam cross-section, the greater its support for adjacent components. In this embodiment, each rear longitudinal beam 21 is provided with multiple cavities 211. These cavities 211 extend parallel to the length of the corresponding rear longitudinal beam 21, and the cross-sections of these cavities 211, perpendicular to their lengths, are rectangular. This facilitates the formation of a large number of chamfers on the rear longitudinal beam 21, enhancing the secure connection and stability between the rear longitudinal beam 21 and the tow hook longitudinal beam 53, meeting the strength requirements for towing a motorhome or vehicle. In this embodiment, the number of cavities 211 in each rear longitudinal beam 21 is two, and the two cavities 211 are arranged side by side along the width direction of the rear longitudinal beam 21, so that each rear longitudinal beam 21 has 8 chamfers on the cross section perpendicular to its length direction. Compared with the traditional longitudinal beam with 4 chamfers, the rear longitudinal beam 21 disclosed in the utility model can provide nearly twice the supporting force and add a load transfer path, which is more beneficial to meeting the strength performance requirements when towing a hook vehicle.

[0040] Specifically, the two cavities 211 can be referred to as the first cavity 211a and the second cavity 211b, respectively. The sidewall of the first cavity 211a defines a mounting hole 212 for mounting the tow hook 5. In some embodiments, there may be multiple mounting holes 212. In this embodiment, there are two mounting holes 212, spaced apart along the length of the rear longitudinal beam 21. Thus, when the rear bumper beam 3 is removed from the rear vehicle body structure and the tow hook 5 is replaced, the tow hook longitudinal beam 53 can be secured to the first cavity 211a of the rear longitudinal beam 21 via the fasteners inserted through the two mounting holes 212.

[0041] In this embodiment, the installation connection structure 2 also includes a longitudinal beam sealing plate 22. The longitudinal beam sealing plate 22 is located between the rear longitudinal beam 21 and the rear anti-collision beam 3. Its area is larger than the corresponding cross-sectional area of ​​the longitudinal beam 21, which is beneficial to increase the contact area between the rear longitudinal beam 21 and the rear anti-collision beam 3 and improve the stability of the connection. It should be noted that in order to avoid the longitudinal beam sealing plate 22 from interfering with the installation of the tow hook longitudinal beam 53 when replacing the tow hook 5, a avoidance hole 221 is opened in the middle of the longitudinal beam sealing plate 22, which is opposite to the openings of the multiple cavities 211, so that the tow hook longitudinal beam 53 can extend into the first cavity 211a of the rear longitudinal beam 21 through the avoidance hole 221. Preferably, the shape of the avoidance hole 221 is adapted to the shape of the cavity 211. In some embodiments, there can be multiple longitudinal beam sealing plates 22. In this embodiment, there are two longitudinal beam sealing plates 22, and each longitudinal beam sealing plate 22 is provided with an avoidance hole 221. The two longitudinal beam sealing plates 22 are respectively connected to the rear ends of the two rear longitudinal beams 21.

[0042] Furthermore, the mounting and connecting structure 2 includes a first connecting plate 23 and a second connecting plate 24. In this embodiment, the first connecting plate 23 is mounted on the end of the rear longitudinal beam 21 near the rear floor 1 for connection to the rear floor 1. The second connecting plate 24 is mounted on the end of the rear longitudinal beam 21 opposite the first connecting plate 23 for connection to the longitudinal beam cover 22. Specifically, the first connecting plate 23 is mounted on two opposing sides of the front end of the rear longitudinal beam 21 (in this embodiment, the left and right sides), and extends along the length of the rear longitudinal beam 21. Multiple connection points exist between the first connecting plate 23 and the rear longitudinal beam 21 to ensure the strength of the connection. The second connecting plate 24 is located on at least two opposing sides of the rear end of the rear longitudinal beam 21 (in this embodiment, the upper and lower sides and the left and right sides). At least a portion of the second connecting plate 24 is flush with the rear end surface of the rear longitudinal beam 21 and extends perpendicular to the length of the rear longitudinal beam 21. The portion of the second connecting plate 24 extending perpendicular to the length of the rear longitudinal beam 21 is designed to mate with the longitudinal beam cover 22 to enhance the reliability of the connection with the longitudinal beam cover 22. Preferably, the second connecting plate 24 is L-shaped, a portion of which is used to fit with the rear longitudinal beam 21 and is fixed to the rear longitudinal beam 21 by fixings or welding, and the other portion is used to fit with the longitudinal beam sealing plate 22 and is fixedly installed by fixings or welding.

[0043] like Figure 1 and Figure 2 As shown, in order to further absorb the impact force of the car in the event of a traffic accident, the rear body structure also includes a rear panel 4 located between the rear longitudinal beam 21 and the rear anti-collision beam 3. The area of ​​the rear panel 4 is larger than the area corresponding to the longitudinal beam sealing plate 22. It can not only disperse the impact force on the rear of the vehicle to reduce the damage to the occupants caused by the collision load on the rear of the vehicle, but also facilitate the detachable connection between the rear anti-collision beam 3 and the rear longitudinal beam 21. Specifically, the rear panel 4 is provided with an assembly hole 41. The rear anti-collision beam 3 includes a main beam 31, an end plate 33, and an energy absorption box 32 connected between the main beam 31 and the end plate 33. The end plate 33 is provided with a through hole (not shown in the figure). The longitudinal beam sealing plate 22 is provided with a connecting hole (not shown in the figure). The connecting hole corresponds to the through hole of the end plate 33 and the assembly hole 41 of the rear panel 4. In this way, it is convenient to thread the fastening bolts that pass through the longitudinal beam cover plate 22, the rear panel 4, and the end plate 33 of the rear anti-collision beam 3 in sequence with the fastening nuts, thereby achieving a fixed connection between the rear anti-collision beam 3 and the rear longitudinal beam 21. When the rear anti-collision beam 3 needs to be removed to replace the tow hook 5, the user can remove the rear anti-collision beam 3 by loosening the fastening nuts on the fastening bolts using auxiliary tools.

[0044] Furthermore, the rear vehicle body structure also includes a rear guard (not shown). From the front to the rear of the vehicle, the rear guard is installed at the rear of the rear anti-collision beam 3 and is connected to the rear panel 4 and the rear side panel of the vehicle body. It can not only reduce the impact force on the vehicle body during a collision, protect the vehicle body from excessive damage during a collision, and reduce injuries to the occupants, but also cover the rear vehicle body structure to decorate the vehicle body. It should be noted that in order to avoid the rear guard from interfering with the installation and use of the tow hook 5 when replacing the tow hook 5, an avoidance groove (not shown) is provided at the bottom of the rear guard. In this way, when the tow hook 5 is fixedly connected to the rear longitudinal beam 21, the tow hook body 51 is inserted into the avoidance groove, making it convenient to use the tow hook 5 to tow the RV or vehicle at the rear.

[0045] An embodiment of the second aspect of the utility model provides a car, which includes a towing hook 5 and a rear body structure as described in the above embodiment, wherein the towing hook 5 is detachably connected to the mounting connection structure 2 of the rear body structure, and is connected to the rear floor 1 through the mounting connection structure 2; when the rear anti-collision beam 3 is removed from the rear body structure and the towing hook 5 is fixedly connected to the mounting connection structure 2, a part of the towing hook 5 extends into at least one of the cavities 211 of the rear longitudinal beam 21, so that the installation height of the towing hook 5 is the same as the installation height of the rear anti-collision beam 3, which not only enables the above-mentioned car to have the function of towing a RV after being modified, but also has little impact on the departure angle and ground clearance of the modified vehicle, or even no impact, and therefore will not have a significant impact on the vehicle's passability.

[0046] Compared with the prior art, the present invention has the following beneficial effects:

[0047] The utility model connects the rear anti-collision beam to the rear longitudinal beam in a detachable manner and provides a multi-cavity structure in the rear longitudinal beam, which not only improves the structural strength of the rear body of the vehicle, but also the multi-cavity structure can facilitate the insertion of the tow hook longitudinal beam, making it easy to replace the tow hook, and making the installation height of the tow hook basically the same as the installation height of the rear anti-collision beam, so that the impact on the departure angle and ground clearance of the vehicle after the replacement is small, which is beneficial to ensuring the vehicle's passability.

[0048] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention are intended to be covered by the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A rear vehicle body structure, characterized in that: The invention comprises a rear floor (1), a mounting connection structure (2), and a rear anti-collision beam (3); the mounting connection structure (2) comprises a rear longitudinal beam (21); the rear longitudinal beam (21) is arranged between the rear anti-collision beam (3) and the rear floor (1); the rear anti-collision beam (3) and the mounting connection structure (2) are detachably connected; and a plurality of cavities (211) are provided in the rear longitudinal beam (21); at least one of the plurality of cavities (211) is used for installing a towing hook (5).

2. The rear vehicle body structure according to claim 1, wherein: The plurality of cavities (211) include a first cavity (211a) and a second cavity (211b) arranged side by side along the width direction of the rear longitudinal beam (21), and the first cavity (211a) is used for allowing a portion of the towing hook (5) to extend therein.

3. The rear vehicle body structure according to claim 2, wherein: A mounting hole (212) for fixing the towing hook (5) is provided on the side wall of the first cavity (211a), and the rear longitudinal beam (21) is fixedly connected to the towing hook (5) via a fixing piece passing through the mounting hole (212).

4. The rear vehicle body structure according to claim 1, wherein: The mounting connection structure (2) further comprises a longitudinal beam sealing plate (22) connected between the rear longitudinal beam (21) and the rear anti-collision beam (3), wherein the longitudinal beam sealing plate (22) is provided with avoidance holes (221) corresponding to the plurality of cavities (211).

5. The rear vehicle body structure according to claim 4, wherein: The mounting connection structure (2) further includes a first connecting plate (23) and a second connecting plate (24), wherein the first connecting plate (23) is provided at the front end of the rear longitudinal beam (21) and is used to connect to the rear floor (1); and the second connecting plate (24) is provided at the rear end of the rear longitudinal beam (21) and is used to connect to the longitudinal beam cover plate (22).

6. The rear vehicle body structure according to claim 5, wherein: The first connecting plate (23) is provided on two opposite sides of the front end of the rear longitudinal beam (21), extending along the length direction of the rear longitudinal beam (21), and there are multiple connection points between the first connecting plate (23) and the rear longitudinal beam (21); the second connecting plate (24) is provided on at least two opposite sides of the rear end of the rear longitudinal beam (21), and a part of the second connecting plate (24) is fixedly connected to the rear longitudinal beam (21), and the other part extends in a direction perpendicular to the length direction of the rear longitudinal beam (21).

7. The rear vehicle body structure according to claim 6, wherein: An extended portion of the second connecting plate (24) in a direction perpendicular to the length direction of the rear longitudinal beam (21) is flush with a rear end surface of the rear longitudinal beam (21).

8. The rear vehicle body structure according to claim 1, wherein: It also includes a rear panel (4) arranged between the rear longitudinal beam (21) and the rear anti-collision beam (3).

9. The rear vehicle body structure according to claim 1, wherein: It also includes a rear guard, which is provided with an avoidance groove.

10. An automobile, characterized in that: The invention comprises a towing hook (5) and a rear vehicle body structure as claimed in any one of claims 1 to 9, wherein when the rear anti-collision beam (3) is removed from the rear vehicle body structure, a portion of the towing hook (5) extends into at least one of the plurality of cavities (211) and is detachably connected to the mounting connection structure (2), thereby maintaining the mounting height of the towing hook (5) to be the same as the mounting height of the rear anti-collision beam (3).

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