Vehicle body rear structure and a split door vehicle

Abstract

The present disclosure relates to a vehicle body rear structure and a split door type vehicle, the vehicle body rear structure comprising a hinge mechanism, a rear door and a rear floor inner wheelhouse reinforcement; the hinge mechanism comprising a hinge seat and a rotating arm, the hinge seat being connected to the rear floor inner wheelhouse reinforcement, the rotating arm being rotatably connected to the hinge seat, and the rotating arm being connected to the rear door. The hinge seat is connected to the rear floor inner wheelhouse reinforcement, without the need to reserve arrangement space on the C pillar and without causing an increase in the size of the C pillar, thereby not limiting the styling seam line; secondly, by arranging the hinge seat on the rear floor inner wheelhouse reinforcement, the installation strength and rigidity requirements of the rear door can be effectively met; in addition, by arranging the hinge seat on the rear floor inner wheelhouse reinforcement, the size of the rear door opening in the front-rear direction is not affected, and the wheelbase of the vehicle does not need to be increased to meet the getting-on and getting-off requirements.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of vehicles, and particularly relates to a vehicle body rear structure and a split-door vehicle. BACKGROUND

[0002] The split-door of an automobile is a novel door opening mode. In the related art, the rear door of a split-door vehicle is often installed on a C pillar through at least two hinges. For the C pillar, on the one hand, it needs to have sufficient arrangement space in the up-down direction, and on the other hand, it needs to have sufficient mounting surface size in the left-right direction, thereby causing the design size of the C pillar to be large, further causing the rear door seam line of the C pillar to be large, and causing the rear door opening size to be reduced, which affects the convenience of passengers getting on and off the vehicle. In addition, after the hinge is installed on the C pillar, in order to avoid the rear door interfering with the side wall during door opening, the rear side wall needs to be processed in pieces, which increases the single-piece cost and mold investment of the side wall. SUMMARY

[0003] In order to overcome the problems in the related art, the present disclosure provides a vehicle body rear structure and a split-door vehicle to solve the technical problems in the related art.

[0004] According to a first aspect of the embodiments of the present disclosure, a vehicle body rear structure is provided, which comprises a hinge mechanism, a rear door and a rear floor inner wheelhouse reinforcement plate; the hinge mechanism comprises a hinge seat and a rotating arm, the hinge seat is connected to the rear floor inner wheelhouse reinforcement plate, the rotating arm is rotatably connected to the hinge seat, and the rotating arm is connected to the rear door.

[0005] In some embodiments, the hinge mechanism further comprises a rotating shaft, the rotating shaft is rotatably connected to the hinge seat around an axis extending in a first direction;

[0006] The rotating arm comprises a sleeve, a rotating arm body and a first fastener, the rotating arm body is connected to the sleeve, the sleeve is sleeved on the rotating shaft and is fixedly connected to the rotating shaft through the first fastener, and the rotating arm body is connected to the rear door.

[0007] In some embodiments, the rotating arm body comprises an installation plate and a curved arm connected to each other, one end of the curved arm is connected to the sleeve, the other end of the curved arm is connected to the installation plate, the curved arm is bent around the rotating shaft and protrudes towards the rear floor inner wheelhouse reinforcement plate, and the installation plate is connected to the rear door.

[0008] In some embodiments, the curved arm comprises a first curved arm and a second curved arm which are detachably connected, the first curved arm is connected to the sleeve, and the second curved arm is connected to the rear door.

[0009] In some embodiments, the curved arm further comprises a second fastener;

[0010] The first curved arm comprises a first body and a first connecting portion connected to each other, the first body is connected to the sleeve, and the first connecting portion is formed with a first fastening hole;

[0011] The second curved arm comprises a second body and a second connecting portion connected to each other, the second body is connected to the mounting plate, and the second connecting portion is formed with a second fastening hole;

[0012] The second fastener is threaded through the first fastening hole and the second fastening hole to connect the first connecting portion and the second connecting portion.

[0013] In some embodiments, the first connecting portion is formed with a first step surface and a second step surface arranged intersectingly, the second connecting portion is formed with a third step surface and a fourth step surface arranged intersectingly, the first step surface can be arranged in abutment with the third step surface, and the second step surface can be arranged in abutment with the fourth step surface.

[0014] In some embodiments, the second curved arm has a dimension in the first direction greater than that of the first curved arm in the first direction.

[0015] In some embodiments, the curved arm is configured as an integrally formed structure and comprises a first curved segment and a second curved segment connected to each other, the side of the first curved segment away from the second curved segment is connected to the sleeve, the side of the second curved segment away from the first curved segment is connected to the mounting plate, the second curved segment has a dimension in the first direction greater than that of the first curved segment in the first direction, and the mounting plate has a dimension in the first direction greater than that of the second curved segment in the first direction.

[0016] In some embodiments, the hinge mechanism further comprises a hinge shaft, the hinge seat comprises a first branch arm, a second branch arm, and a connecting beam, the first branch arm and the second branch arm are arranged opposite and spaced apart along a first direction and connected by the connecting beam, and the first branch arm and the second branch arm are connected to the rear floor inner wheelhouse reinforcement plate, the hinge shaft is rotatably connected between the first branch arm and the second branch arm about an axis extending along the first direction, and the rotating arm is connected to the hinge shaft.

[0017] In some embodiments, the first branch arm comprises a first base, a first branch arm plate, and a first top, the first branch arm plate extends along a second direction, the first base is connected to one side of the first branch arm plate along the second direction, and the first top is connected to the other side of the first branch arm plate along the second direction.

[0018] The second support arm comprises a second base, a second support arm plate and a second top base, the second support arm plate extends along a second direction, the second base is connected to one side of the second support arm plate along the second direction, and the second top base is connected to the other side of the second support arm plate along the second direction.

[0019] The first base and the second base are used to be connected with the rear floor inner wheelhouse reinforcement plate, the connecting beam connects the first top base and the second top base, and the rotating shaft is rotatably connected between the first top base and the second top base; and the second direction is arranged to intersect the first direction.

[0020] In some embodiments, the hinge seat further comprises a stopper arranged on the first top base and / or the second top base and capable of abutting against the rotating arm to limit the rotating angle of the rotating arm.

[0021] In some embodiments, the first support arm plate and / or the second support arm plate is provided with a lightening groove; and / or,

[0022] The first support arm plate and the first base are connected with a first reinforcing structure, and / or the second support arm plate and the second base are connected with a second reinforcing structure.

[0023] In some embodiments, in the second direction and gradually away from the first base, the size of the first support arm plate in a third direction gradually decreases, wherein the first direction, the second direction and the third direction are perpendicular to each other in pairs; and / or,

[0024] In the second direction and gradually away from the second base, the size of the second support arm plate in a third direction gradually decreases, wherein the first direction, the second direction and the third direction are perpendicular to each other in pairs.

[0025] In some embodiments, the hinge mechanism further comprises a rotating shaft, and the hinge seat, the rotating shaft and the rotating arm are arranged as a single piece, the rotating arm is rotatably connected to the hinge seat through the rotating shaft, and the rotating shaft is located at the rear side of the rear door.

[0026] In some embodiments, the hinge mechanism only has one support for the rear door.

[0027] According to a second aspect of the embodiments of the present disclosure, a kind of opposite opening door type vehicle is further provided, and the opposite opening door type vehicle comprises the rear structure of vehicle body.

[0028] The technical scheme provided by the embodiment of the present disclosure can have the following beneficial effects: first, the hinge seat is connected to the rear floor inner wheel cover reinforcing plate, without reserving arrangement space on the C column and without increasing the size of the C column, thereby not limiting the styling joint line; second, by arranging the hinge seat on the rear floor inner wheel cover reinforcing plate, the installation strength and rigidity of the rear door can be effectively met; in addition, by arranging the hinge seat on the rear floor inner wheel cover reinforcing plate, the size of the rear door opening in the front-rear direction is not affected, and the wheelbase of the vehicle does not need to be increased to meet the getting-on and getting-off requirements.

[0029] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated into the specification and constitute part of the specification, illustrate embodiments consistent with the present disclosure and, together with the specification, serve to explain the principles of the present disclosure.

[0031] Figure 1 is a structural schematic view of a rear structure of a vehicle body according to an exemplary embodiment, in which a rear door is in an open state.

[0032] Figure 2 is a structural schematic view of a rear structure of a vehicle body according to an exemplary embodiment, in which a rear door is in a closed state.

[0033] Figure 3 is a structural schematic view of a hinge mechanism of a rear structure of a vehicle body according to an exemplary embodiment.

[0034] Figure 4 is a structural schematic view of a rotating arm of a hinge mechanism of a rear structure of a vehicle body according to an exemplary embodiment.

[0035] Figure 5 is a structural schematic view of a first curved arm and a sleeve of a hinge mechanism of a rear structure of a vehicle body according to an exemplary embodiment.

[0036] Figure 6 is a structural schematic view of a second curved arm and a mounting plate of a hinge mechanism of a rear structure of a vehicle body according to an exemplary embodiment.

[0037] Figure 7 is a structural schematic view of a hinge mechanism of a rear structure of a vehicle body according to another exemplary embodiment.

[0038] Figure 8 and Figure 9 is a structural schematic view of a rotating arm of a hinge mechanism of a rear structure of a vehicle body according to another exemplary embodiment.

[0039] Figure 10 Fig. 1 is a structural diagram of a hinge seat and a pivot shaft of a vehicle body rear structure according to an example embodiment.

[0040] BRIEF DESCRIPTION OF DRAWINGS

[0041] 1 hinge seat 11 first arm

[0042] 111 first base 112 first arm plate

[0043] 113 first top seat 12 second arm

[0044] 121 second base 122 second arm plate

[0045] 123 second top seat 13 connecting beam

[0046] 14 stopper 110 first reinforcement mechanism

[0047] 120 weight-reducing groove 2 pivot shaft

[0048] 3 rotation arm 31 sleeve

[0049] 32 rotation arm body 33 first fastener

[0050] 321 mounting plate 322 curved arm

[0051] 3221 first curved section 3222 second curved section

[0052] 3223 first curved arm 3224 second curved arm

[0053] 3225 second fastener 3226 first body

[0054] 3227 first connecting portion 3228 second body

[0055] 3229 second connecting portion 70 first fastening hole

[0056] 90 second fastening hole 71 first stepped surface

[0057] 72 second stepped surface 91 third stepped surface

[0058] 92 fourth stepped surface 100 rear floor inner wheelhouse reinforcement

[0059] 200 rear door A first direction

[0060] B second direction C third direction DETAILED DESCRIPTION

[0061] The exemplary embodiments will be described in detail below with reference to the drawings. In the following description, the same numbers are used to denote the same elements throughout the several views. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0062] In the present disclosure, unless otherwise specified, the orientation words such as "upper", "lower", "left", "right", "front", "back" used can refer to Figure 1 and Figure 2 ; the orientation words such as "first direction", "second direction" and "third direction" used can refer to Figure 3 ; the terms such as "first", "second" are only used to distinguish one element from another element, and do not have sequential and important meanings.

[0063] Referring to Figures 1 to 10 , the present disclosure provides a vehicle body rear structure, which comprises a hinge mechanism 1000, a rear door 200 and a rear floor inner wheelhouse reinforcement 100; the hinge mechanism 1000 comprises a hinge seat 1 and a rotating arm 3, the hinge seat 1 is connected to the rear floor inner wheelhouse reinforcement 100, the rotating arm 3 is rotatably connected to the hinge seat 1, and the rotating arm 3 is connected to the rear door 200.

[0064] In the above technical solution, first, the hinge seat 1 is connected to the rear floor inner wheelhouse reinforcement 100, without the need to reserve arrangement space on the C pillar and also without causing the increase of the size of the C pillar, thereby not causing the limitation of the styling seam; second, by setting the hinge seat 1 on the rear floor inner wheelhouse reinforcement 100, the installation strength and rigidity requirements of the rear door 200 can be effectively met; in addition, by setting the hinge seat 1 on the rear floor inner wheelhouse reinforcement 100, the size of the rear door opening in the front-rear direction will not be affected, without the need to increase the wheelbase of the vehicle to meet the needs of getting on and off the vehicle.

[0065] Optionally, referring to Figure 1 , Figure 2 and Figure 3 , the hinge mechanism 1000 further comprises a rotating shaft 2, and the hinge seat 1, the rotating shaft 2 and the rotating arm 3 are all arranged as a single one, the rotating arm 3 is rotatably connected to the hinge seat 1 through the rotating shaft 2, and the rotating shaft 2 is located at the rear side of the rear door 200.

[0066] In this embodiment, as the hinge seat 1, the rotating shaft 2 and the rotating arm 3 are all arranged as a single unit, the opening function of the door is realized by using a single hinge, and multiple hinges are not required, which is beneficial to the simplification of the structure and the reduction of the use of the arrangement space. In addition, the rotating shaft 2 is arranged at the rear side of the rear door 200, so that the opening of the door is realized in an out-rotation mode, the interior space of the side wall is not occupied, and the side wall outer plate can be integrally stamped without being divided into parts.

[0067] In one embodiment, referring to Figure 3 , the hinge mechanism 1000 further comprises a rotating shaft 2, which is rotatably connected to the hinge seat 1 about an axis extending in the first direction A; the rotating arm 3 comprises a sleeve 31, a rotating arm body 32 and a first fastener 33, the rotating arm body 32 is connected to the sleeve 31, the sleeve 31 is sleeved on the rotating shaft 2 and is fixedly connected to the rotating shaft 2 by the first fastener 33, and the rotating arm body 32 is connected to the rear door 200.

[0068] In this embodiment, the sleeve 31 is sleeved on the rotating shaft 2 and is fixedly connected to the rotating shaft 2 by the first fastener 33, so that the stability of the connection between the rotating arm 3 and the rotating shaft 2 can be improved. For example, the sleeve 31 is provided with a first mounting hole 310, the rotating shaft 2 is provided with a second mounting hole 20, and the first fastener 33 is configured as a pin, which is inserted through the first mounting hole 310 and the second mounting hole 20 to realize the fixed connection between the sleeve 31 and the rotating shaft 2. However, the connection mode between the rotating arm 3 and the rotating shaft 2 is not limited in the present disclosure. In addition, the specific structure of the rotating arm body 32 is also not limited in the present disclosure, and the rotating arm body 32 can be configured in any appropriate shape and structure.

[0069] Optionally, referring to Figure 1 , Figure 3 and Figure 7 , the rotating arm body 32 comprises a mounting plate 321 and a curved arm 322 connected to each other, one end of the curved arm 322 is connected to the sleeve 31, the other end of the curved arm 322 is connected to the mounting plate 321, the curved arm 322 is curved around the rotating shaft 2 and protrudes towards the rear floor inner wheel cover reinforcement plate 100, and the mounting plate 321 is connected to the rear door 200.

[0070] In this embodiment, the installation plate 321 can be provided to facilitate connection with the rear door 200, improve the convenience of connection, and increase the area of the rotating arm 3 and the rear door 200, thereby improving the stability of installation. For example, a plurality of third installation holes 3210 can be provided on the installation plate 321, and a plurality of bolts corresponding to the plurality of third installation holes 3210 are arranged to pass through the plurality of third installation holes 3210 and the rear door 200, thereby achieving the connection between the installation plate 321 and the rear door 200. In addition, the curved arm 322 is curved around the rotating shaft 2 and protrudes towards the rear floor inner wheel arch reinforcement plate 100, thereby improving the structural strength and facilitating the rotation of the rear door 200.

[0071] Optionally, referring to Figures 3 to 6 , the curved arm 322 includes a first curved arm 3223 and a second curved arm 3224 that are detachably connected, the first curved arm 3223 is connected with the sleeve 31, and the second curved arm 3224 is connected with the rear door 200.

[0072] In this embodiment, the first curved arm 3223 is connected with the sleeve 31, the second curved arm 3224 is connected with the rear door 200, and the first curved arm 3223 and the second curved arm 3224 are detachably connected. During assembly, the first curved arm 3223 and the sleeve 31 can be connected to the hinge seat 1 first, and then assembled as a whole structure to the rear floor inner wheel arch reinforcement plate 100. For the second curved arm 3224, it can be installed on the rear door 200 first, and then assembled with the first curved arm 3223, thereby facilitating assembly and disassembly.

[0073] Referring to Figures 4 to 6 , the curved arm 322 further includes a second fastener 3225; the first curved arm 3223 includes a first body 3226 and a first connecting portion 3227 connected with each other, the first body 3226 is connected with the sleeve 31, and the first connecting portion 3227 is formed with a first fastening hole 70; the second curved arm 3224 includes a second body 3228 and a second connecting portion 3229 connected with each other, the second body 3228 is connected with the installation plate 321, and the second connecting portion 3229 is formed with a second fastening hole 90; and the second fastener 3225 passes through the first fastening hole 70 and the second fastening hole 90 to connect the first connecting portion 3227 and the second connecting portion 3229. That is, in this embodiment, the detachable connection of the first curved arm 3223 and the second curved arm 3224 is achieved by the fastener connection, which is simple and firm, and facilitates disassembly and installation. However, the specific connection mode of the first curved arm 3223 and the second curved arm 3224 is not limited in the present disclosure.

[0074] Optionally, referring to Figure 5 and Figure 6As shown, the first connecting portion 3227 is formed with a first step surface 71 and a second step surface 72 intersectingly arranged, the second connecting portion 3229 is formed with a third step surface 91 and a fourth step surface 92 intersectingly arranged, the first step surface 71 can be arranged in abutment with the third step surface 91, and the second step surface 72 can be arranged in abutment with the fourth step surface 92.

[0075] By arranging the first step surface 71 in abutment with the third step surface 91 and the second step surface 72 in abutment with the fourth step surface 92, the tightness of the abutment of the first curved arm 3223 and the second curved arm 3224 can be effectively improved, and the stability of the connection of the first curved arm 3223 and the second curved arm 3224 can be improved.

[0076] Optionally, referring to Figure 4 As shown, the size of the second curved arm 3224 in the first direction A is greater than the size of the first curved arm 3223 in the first direction A, so as to improve the strength of the end of the curved arm 322 and avoid the situation that the curved arm 322 is broken due to insufficient strength. In addition, the size of the mounting plate 321 in the first direction A can be greater than the size of the second curved section 3222 in the first direction A, which is convenient for mounting with the rear door 200 and improves the stability of the mounting.

[0077] In other embodiments, referring to Figures 7 to 10 As shown, the curved arm 322 is configured as an integrally formed structure and includes a first curved section 3221 and a second curved section 3222 connected to each other, the side of the first curved section 3221 away from the second curved section 3222 is connected with the sleeve 31, the side of the second curved section 3222 away from the first curved section 3221 is connected with the mounting plate 321, the size of the second curved section 3222 in the first direction A is greater than the size of the first curved section 3221 in the first direction A, and the size of the mounting plate 321 in the first direction A is greater than the size of the second curved section 3222 in the first direction A.

[0078] In this embodiment, the curved arm 322 is configured as an integrally formed structure, which is convenient for processing and forming, and the size of the second curved section 3222 in the first direction A is greater than the size of the first curved section 3221 in the first direction A, which can effectively improve the strength of the end of the curved arm 322 and avoid the situation that the curved arm 322 is broken due to insufficient strength. In addition, the size of the mounting plate 321 in the first direction A is greater than the size of the second curved section 3222 in the first direction A, which is convenient for mounting with the rear door 200 and improves the stability of the mounting.

[0079] Referring to Figure 10As shown, the hinge mechanism 1000 further comprises a rotating shaft 2, the hinge base 1 comprises a first arm 11, a second arm 12 and a connecting beam 13, the first arm 11 and the second arm 12 are oppositely and spacedly arranged along the first direction A and connected by the connecting beam 13, and the first arm 11 and the second arm 12 are connected to the rear floor inner wheel cover reinforcement plate 100, the rotating shaft 2 is rotatably connected between the first arm 11 and the second arm 12 around an axis extending along the first direction A, and the rotating arm 3 is connected to the rotating shaft 2. The hinge base 1 has simple structure and stable installation. However, the specific structure of the hinge base 1 is not limited in the present disclosure.

[0080] In another embodiment, referring to Figure 10 As shown, the first arm 11 comprises a first base 111, a first arm plate 112 and a first top 113, the first arm plate 112 extends along a second direction B, the first base 111 is connected to one side of the first arm plate 112 along the second direction B, and the first top 113 is connected to the other side of the first arm plate 112 along the second direction B. The second arm 12 comprises a second base 121, a second arm plate 122 and a second top 123, the second arm plate 122 extends along the second direction B, the second base 121 is connected to one side of the second arm plate 122 along the second direction B, and the second top 123 is connected to the other side of the second arm plate 122 along the second direction B. The first base 111 and the second base 121 are used to connect to the rear floor inner wheel cover reinforcement plate 100, the connecting beam 13 connects the first top 113 and the second top 123, and the rotating shaft 2 is rotatably connected between the first top 113 and the second top 123; wherein the second direction B is arranged intersecting the first direction A.

[0081] The first base 111 and the second base 121 are used to connect to the rear floor inner wheel cover reinforcement plate 100, which can effectively improve the stability of the hinge base 1 connected to the rear floor inner wheel cover reinforcement plate 100. For example, the first base 111 is provided with two first base holes 1110 spacedly arranged along a third direction C, and the second base 121 is provided with two second base holes 1210 spacedly arranged along the third direction C. The first base 111 and the second base 121 are connected to the rear floor inner wheel cover reinforcement plate 100 by using bolts passing through the two first base holes 1110 and the two second base holes 1210. That is, the hinge base 1 is installed on the rear floor inner wheel cover reinforcement plate 100 by four mounting points, which has stronger installation stability.

[0082] Secondly, the first arm plate 112 and the second arm plate 122 both extend along the second direction B, so as to facilitate the arrangement of the rotating arm 3 in the second direction B. In addition, the connecting beam 13 connects the first top base 113 and the second top base 123, and the rotating shaft 2 is rotatably connected between the first top base 113 and the second top base 123. The connecting beam 13 can improve the stability of the connection between the first top base 113 and the second top base 123, and improve the stability of the connection between the first arm 11 and the second arm 12. The arrangement of the first top base 113 and the second top base 123 also facilitates the installation and arrangement of the rotating shaft 2.

[0083] Optionally, the rotating arm 3 is arranged between the first arm 11 and the second arm 12, and the projection of the rotating arm 3 in the first direction A is partially located in the projection of the first arm 11 and the second arm 12 in the first direction A. That is, the rotating arm 3 is partially arranged between the first arm 11 and the second arm 12, effectively utilizing the space between the first arm 11 and the second arm 12, improving the utilization of space, and facilitating the compact design of the hinge mechanism 1000.

[0084] Referring to Figure 10 As shown in the figure, the hinge base 1 further comprises a stopper 14 arranged on the first top base 113 and / or the second top base 123 and capable of abutting against the rotating arm 3, so as to limit the rotation angle of the rotating arm 3 and avoid excessive rotation of the rotating arm 3, thereby meeting the use requirements. The stopper 14 can be constructed in any appropriate shape and structure, and the present disclosure does not limit this. For example, the stopper 14 can be constructed in a limiting block structure.

[0085] In another embodiment, referring to Figure 10 As shown in the figure, the first arm plate 112 and / or the second arm plate 122 is provided with a weight-reducing groove 120; and / or, the first arm plate 112 and the first base 111 are connected by a first reinforcing structure 110, and / or, the second arm plate 122 and the second base 121 are connected by a second reinforcing structure. The arrangement of the weight-reducing groove 120 can effectively reduce the weight of the hinge mechanism 1000, thereby facilitating the lightweight design, and the design of the reinforcing structure can effectively improve the overall structural strength of the hinge mechanism 1000.

[0086] In other embodiments, referring to Figure 10As shown, the first arm plate 112 gradually decreases in size in the third direction C in the second direction B and in a direction gradually away from the first base 113, wherein the first direction A, the second direction B and the third direction C are perpendicular to each other two by two; and / or the second arm plate 122 gradually decreases in size in the third direction C in the second direction B and in a direction gradually away from the second base 121, wherein the first direction A, the second direction B and the third direction C are perpendicular to each other two by two. The shape of the first arm plate 112 and the second arm plate 122 can improve the stability of the structure and effectively reduce the weight of the structure, facilitating the design of lightweight.

[0087] The present disclosure additionally provides a split door type vehicle, characterized by comprising the vehicle body rear structure according to any one of claims 1 to 14.

[0088] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. This application is intended to cover any variations, uses or adaptations of the present disclosure following the general principles thereof and including such departures from the present disclosure that come within known

[0089] It should be understood that the present disclosure is not limited to the precise structures herein described and illustrated in the drawings and that various modifications and changes can be made without departing from its scope. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A rear structure of a vehicle body, characterized in that, The rear structure of the vehicle body includes a hinge mechanism, a rear door, and a rear floor inner wheel arch reinforcement plate; the hinge mechanism includes a hinge seat and a rotating arm, the hinge seat is connected to the rear floor inner wheel arch reinforcement plate, the rotating arm is rotatably connected to the hinge seat, and the rotating arm is connected to the rear door; The hinge mechanism further includes a pivot shaft that is rotatably connected to the hinge seat about an axis extending in a first direction; The rotating arm includes a sleeve, a rotating arm body, and a first fastener. The rotating arm body is connected to the sleeve. The sleeve is sleeved on the rotating shaft and fixedly connected to the rotating shaft through the first fastener. The rotating arm body is connected to the rear door. The rotating arm body includes a mounting plate and a curved arm connected to each other. One end of the curved arm is connected to the sleeve, and the other end of the curved arm is connected to the mounting plate. The curved arm bends around the pivot and protrudes toward the inner wheel cover reinforcement plate of the rear floor. The mounting plate is connected to the rear door. The bending arm includes a first bending arm and a second bending arm that are detachably connected. The first bending arm is connected to the sleeve, and the second bending arm is connected to the rear door.

2. The rear structure of the vehicle body according to claim 1, characterized in that, The curved arm also includes a second fastener; The first curved arm includes a first body and a first connecting portion connected to each other. The first body is connected to the sleeve, and the first connecting portion has a first fastening hole. The second curved arm includes a second body and a second connecting portion that are connected to each other. The second body is connected to the mounting plate, and the second connecting portion has a second fastening hole. The second fastener passes through the first fastening hole and the second fastening hole to connect the first connecting part and the second connecting part.

3. The rear structure of the vehicle body according to claim 2, characterized in that, The first connecting portion has an intersecting first step surface and a second step surface, and the second connecting portion has an intersecting third step surface and a fourth step surface. The first step surface can fit against the third step surface, and the second step surface can fit against the fourth step surface.

4. The rear structure of the vehicle body according to claim 1, characterized in that, The dimension of the second curved arm in the first direction is greater than the dimension of the first curved arm in the first direction.

5. The rear structure of the vehicle body according to claim 1, characterized in that, The curved arm is a one-piece molded structure, including a first curved segment and a second curved segment connected to each other. The side of the first curved segment away from the second curved segment is connected to the sleeve, and the side of the second curved segment away from the first curved segment is connected to the mounting plate. The dimension of the second curved segment in the first direction is greater than the dimension of the first curved segment in the first direction, and the dimension of the mounting plate in the first direction is greater than the dimension of the second curved segment in the first direction.

6. The rear structure of the vehicle body according to claim 1, characterized in that, The hinge mechanism further includes a pivot shaft. The hinge seat includes a first arm, a second arm, and a connecting beam. The first arm and the second arm are arranged opposite to each other and spaced apart along a first direction and connected by the connecting beam. The first arm and the second arm are connected to the inner wheel cover reinforcement plate of the rear floor. The pivot shaft is rotatably connected between the first arm and the second arm about an axis extending along the first direction. The rotating arm is connected to the pivot shaft.

7. The rear structure of the vehicle body according to claim 6, characterized in that, The first support arm includes a first base, a first support arm plate, and a first top seat. The first support arm plate extends along a second direction, the first base is connected to one side of the first support arm plate along the second direction, and the first top seat is connected to the other side of the first support arm plate along the second direction. The second support arm includes a second base, a second support arm plate, and a second top seat. The second support arm plate extends along a second direction, the second base is connected to one side of the second support arm plate along the second direction, and the second top seat is connected to the other side of the second support arm plate along the second direction. The first base and the second base are used to connect with the inner wheel cover reinforcement plate of the rear floor, the connecting beam connects the first top seat and the second top seat, and the rotating shaft is rotatably connected between the first top seat and the second top seat; wherein, the second direction is arranged to intersect with the first direction.

8. The rear structure of the vehicle body according to claim 7, characterized in that, The hinge seat also includes a stop member, which is disposed on the first top seat and / or the second top seat and can abut against the rotating arm to limit the rotation angle of the rotating arm.

9. The rear structure of the vehicle body according to claim 7, characterized in that, The first support arm plate and / or the second support arm plate are provided with weight reduction grooves; and / or, A first reinforcing structure is connected between the first support arm plate and the first base, and / or a second reinforcing structure is connected between the second support arm plate and the second base.

10. The rear structure of the vehicle body according to claim 7, characterized in that, In the second direction and in a direction gradually moving away from the first base, the dimension of the first support plate gradually decreases in the third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular; and / or, In the second direction and in a direction that gradually moves away from the second base, the size of the second support plate gradually decreases in the third direction, wherein the first direction, the second direction, and the third direction are mutually perpendicular.

11. The rear structure of the vehicle body according to claim 1, characterized in that, The hinge mechanism also includes a pivot, and the hinge base, the pivot, and the rotating arm are all single units. The rotating arm is rotatably connected to the hinge base via the pivot, and the pivot is located on the rear side of the rear door.

12. The rear structure of the vehicle body according to claim 1, characterized in that, The hinge mechanism has only one support for the rear door.

13. A vehicle with double doors, characterized in that, The vehicle with double doors includes the rear body structure as described in any one of claims 1-12.

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