KR20220093750A - Rear structure for vehicle - Google Patents

Abstract

The present invention relates to a rear structure of a vehicle. More specifically, the rear structure of a vehicle with excellent performance with respect to a rear collision by having a structure which effectively disperses a rear road path. According to an embodiment of the present invention, the rear structure of a vehicle comprises: a lower cross member coupled to the bottom surface of a lower side of a rear floor and extended toward a lateral side of the rear floor; a diagonal member where one proximal end is coupled to the cross member and the other distal ends respectively extended from the bottom surface of the rear floor to both sides in a diagonal direction from the cross member; and an upper cross member coupled to an upper surface of the rear floor and overlapped with the cross member and the diagonal member while having the rear floor therebetween.

Description

The rear structure of the vehicle {REAR STRUCTURE FOR VEHICLE}

The present invention relates to a rear structure of a vehicle, and more particularly, to a rear structure of a vehicle having excellent performance against a rear collision by including a structure for effectively distributing a rear road path.

In a hybrid electric vehicle (HEV), an engine and a motor are mixed to drive the vehicle. The motor drives the vehicle by receiving electric energy stored in the battery and regenerative braking, etc., and the vehicle is driven by the engine when the electric power charged in the battery falls below a certain level. Hybrid vehicles (HEVs) are considered eco-friendly vehicles because they consume less fuel or emit pollutants because they continuously charge the battery through self-generation and regenerative braking while driving to drive the vehicle.

A plug-in hybrid electric vehicle (PHEV), which is a type of hybrid vehicle, is equipped with a large-capacity battery compared to a conventional hybrid vehicle. Accordingly, in a plug-in hybrid vehicle (PHEV), the vehicle's battery is charged through an external electricity source and the electric motor is driven with the charged power, and the engine operates when all the charged electricity is consumed.

As such, in the case of a hybrid vehicle, both a fuel tank and a battery are mounted on the vehicle. Fuel tanks and batteries need to be installed in a limited space within the vehicle, as well as be protected from external impact caused by a collision, so an appropriate protective structure and layout design are required. Considering both aspects, the battery and fuel tank are mainly mounted on the rear floor of the vehicle body along with the necessary protective structure.

Looking at an example, as shown in FIGS. 1A and 1B , the batteries 650A and 650B are mounted on the upper surface of the rear floor 630 , and the fuel tank 610 is mounted on the lower surface of the rear floor 630 . In order to protect the fuel tank 610 in the event of a vehicle collision, the fuel tank 610 is disposed at a predetermined distance away from the rear of the vehicle, and the batteries 650A and 650B are separated and two batteries are disposed to secure capacity.

An offset crash test laterally offset with respect to the longitudinal centerline of a vehicle is often used to evaluate the rear impact performance of a vehicle. In this example, when a rear impact occurs, the back beam is deformed and fracture occurs. Although additional deformation is suppressed by the rear cross member, for example, if an offset collision occurs on the left side with respect to the longitudinal centerline of the vehicle, a bend occurs at the front end of the side member, and the collision distribution due to the breakage of the back beam is insufficient, so the right member reduces the impact force absorption, while inward rotation occurs in the left member.

Laid-open Patent Publication No. 10-2020-0094387 (published date: 2020.08.07)

The present invention has been devised to solve the above problems,

An object of the present invention is to provide a rear structure of a vehicle capable of effectively protecting a fuel tank and a battery against a rear collision.

The object of the present invention is not limited to the object mentioned above, and other objects not mentioned are clearly understood by those of ordinary skill in the art to which the present invention belongs from the description below (hereinafter 'person of ordinary skill') it could be

In order to achieve the object of the present invention as described above and perform the characteristic functions of the present invention to be described later, the features of the present invention are as follows.

According to some embodiments of the present invention, a rear structure of a vehicle includes: a lower crossmember coupled to a rear bottom surface of a rear floor and extending in a lateral direction of the rear floor; an oblique member having a proximal end of one end coupled to the cross member, and a distal end of the other end extending from the cross member to both sides from the bottom surface of the rear floor in an oblique direction; and an upper cross member coupled to an upper surface of the rear floor and overlapping the cross member and the diagonal member with the rear floor interposed therebetween.

According to the present invention, there is provided a rear structure of a vehicle capable of effectively dispersing collision energy in a rear collision.

According to the present invention, there is provided a rear structure of a vehicle having excellent protection performance of a battery and a fuel tank in case of a rear collision.

Effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly recognized by those skilled in the art from the following description.

1A shows a top side view of a rear floor of an exemplary hybrid vehicle;
1B shows a bottom view of an exemplary hybrid vehicle rear floor;
2 shows a top side view of a rear floor comprising a rear structure according to the present invention;
Figure 3 shows the rear structure of the vehicle according to the present invention as showing a portion indicated by a dotted line after removing the rear floor in Figure 2;
Figure 4 shows an exploded perspective view of Figure 3,
5 shows a diagonal member according to an embodiment of the present invention,
Figure 6a shows a top side view of the rear floor of the rear structure of the vehicle according to the present invention,
6B shows a bottom view of the rear floor of the rear structure of the vehicle according to the present invention;
7A shows a bottom view of the rear floor of a rear structure of a vehicle according to the present invention;
7B shows a bottom perspective view of the rear floor of the rear structure of the vehicle according to the present invention;
Figure 8a shows a reinforcing member according to an embodiment of the present invention,
Fig. 8b shows a cross-sectional view taken along line AA of Fig. 8a;
9 is an upper perspective view of a rear floor of a rear structure of a vehicle according to the present invention;
10 shows a top side view of the rear floor of the rear structure of the vehicle according to the present invention,
11 shows a bottom view of the rear floor of the rear structure of the vehicle according to the invention;
12 shows a cross-sectional view taken along line B-B' in FIG. 9;
13 shows a cross-sectional view taken along line C-C' in FIG. 9;
Figure 14 is a left side view of Figure 9, some of the configuration is shown transparently,
15 is a view illustrating a collision load distribution direction of a rear structure of a vehicle according to the present invention.

The specific structural or functional descriptions presented in the embodiments of the present invention are only exemplified for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described herein, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

Meanwhile, in the present invention, terms such as first and/or second may be used to describe various components, but the components are not limited to the terms. The above terms are used only for the purpose of distinguishing one element from other elements, for example, within the scope of not departing from the scope of the rights according to the concept of the present invention, the first element may be named as the second element, Similarly, the second component may also be referred to as a first component.

When a component is referred to as being “connected” or “connected” to another component, it should be understood that the other component may be directly connected or connected to the other component, but other components may exist in between. something to do. On the other hand, when it is said that a certain element is "directly connected" or "directly contacted" with another element, it should be understood that no other element is present in the middle. Other expressions for describing the relationship between elements, that is, expressions such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

Like reference numerals refer to like elements throughout. Meanwhile, the terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular form also includes the plural form unless otherwise specified in the phrase. As used herein, “comprises” and/or “comprising” means that the stated component, step, operation and/or element is the presence of one or more other components, steps, operations and/or elements. or addition is not excluded.

The present invention provides a rear structure of a vehicle having excellent vehicle body performance against rear-end collisions in a hybrid vehicle, in particular, a PHEV vehicle.

The vehicle having the rear structure of the vehicle according to the present invention includes one single high voltage battery. A single high voltage battery also increases in size due to the increased capacity. According to the present invention, the fuel tank may be disposed behind the battery on the rear floor through the rear structure having excellent performance against a collision so that the increased battery can be efficiently disposed.

The fuel tank strain rate of a general internal combustion engine vehicle is allowed up to about 40%, whereas in the case of a PHEV vehicle, the condition is strict and only about 15% is allowed. Accordingly, in the vehicle illustrated in FIGS. 1A to 1B , the two batteries 650A and 650B are separated and mounted by disposing the fuel tank 610 on the relatively front side from the rear of the vehicle. Due to the nature of the detachable battery, the battery is cooled by air cooling.

The present invention includes a structure capable of efficiently dispersing collision energy applied to the rear floor, so that the fuel tank can be disposed close to the rear of the vehicle, and also, by employing a single high-voltage battery to cool the battery with water cooling. It can improve battery performance.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 shows a top side view of the rear floor including the rear structure according to the present invention, and FIG. 3 shows the rear structure of the vehicle according to the present invention as a portion indicated by a dotted line after removing the rear floor in FIG. , FIG. 4 shows an exploded perspective view of FIG. 3 . The X direction is the lateral direction of the vehicle, and the Y direction represents the longitudinal direction of the vehicle.

2 to 4, the rear structure 1 of the vehicle according to the present invention is provided on the rear floor 10, the lower cross member 20, the side extension 30, the coupling element 40 and It may include a diagonal member 50 . In particular, the lower cross member 20 , the side extension 30 , the coupling element 40 , and the diagonal member 50 are coupled to the bottom surface of the rear floor 10 .

The lower crossmember 20 is coupled to the bottom surface of the rear floor 10 and extends along the lateral direction X of the vehicle.

The lower cross member 20 is coupled to the bottom surface of the rear floor 10 to form a first space S1 that is an empty space between the lower cross member 20 and the rear floor 10 . As a non-limiting example, the cross-section of the first space S1 is substantially rectangular.

According to the embodiment of the present invention, the lower cross member 20 includes end flange portions 22 formed by bending from both sides of the lower cross member 20 , respectively. The end flange portion 22 is formed by bending from both sides in the longitudinal direction of the lower cross member 20 , and is provided to have a profile corresponding to the rear floor 10 so as to be attached to the bottom surface of the rear floor 10 .

The side extensions 30 are coupled to both ends of the lower cross member 20 , respectively, and coupled to the bottom surfaces of both sides of the rear floor 10 . The side extension 30 extends along both sides of the rear floor 10 by a predetermined distance in the longitudinal direction Y of the vehicle.

The side extension 30 is coupled to the bottom surface of the rear floor 10 to form a second space S2 that is an empty space between the side extension 30 and the rear floor 10 .

On the other hand, according to the embodiment of the present invention, the side extension 30 includes a side flange portion (32). The side flange part 32 is bent from both sides of the side extension 30 and is attached to the bottom surface of the rear floor 10 .

According to an embodiment of the present invention, the lower cross member 20 and the side extension 30 are connected by a coupling element 40 . The coupling element 40 may be provided at both ends of the lower cross member 20 , respectively. The coupling element 40 may provide an additional reinforcing force to the end of the lower cross member 20 and facilitate coupling with the side extension 30 .

The cross-sectional shape of the coupling element 40 is configured to be substantially the same as that of the lower cross member 20 , and the coupling element 40 is seated inside the lower cross member 20 . A flange element 42 formed by bending from the circumference of the coupling element 40 is provided at one end of the coupling element 40 . The flange element 42 is coupled to the outer surface of the side extension 30 , and the engaging element 40 facilitates and strengthens the coupling between the lower crossmember 20 and the side extension 30 .

A pair of diagonal members 50 are provided on both sides of the rear floor 10 , respectively, and extend between the lower cross member 20 and the side extension 30 . The oblique member 50 is coupled to the bottom surface of the rear floor 10 , and is disposed obliquely and substantially obliquely with respect to the longitudinal direction Y or the lateral direction X of the vehicle on the bottom surface of the rear floor 10 . The pair of oblique members 50 are arranged to be symmetrical to each other with respect to the longitudinal direction Y of the vehicle. One side of each diagonal member 50 is coupled to the lower cross member 20 , and the other side of each diagonal member 50 extends to the side of the rear floor 10 , and more specifically, each diagonal member 50 . The other side of the is coupled to the side extension (30).

Referring to FIG. 5 , according to an embodiment of the present invention, the diagonal member 50 includes a first member 150 and a second member 250 . The first member 150 and the second member 250 form a third space S3 of which one side is opened between each other by coupling. The open third space S3 is coupled to the bottom surface of the rear floor 10 to form a closed space.

The cross-sectional shape of the first member 150 generally takes an 'L' shape. The first member 150 includes a first portion 152 and a second portion 154 . The first portion 152 is formed substantially parallel to or horizontally with the rear floor 10 , and the second portion 154 is bent substantially perpendicularly from the first portion 152 .

The proximal end 152a of the first portion 152 is coupled to the lower surface of the lower crossmember 20 . The proximal end 152a of the first portion 152 extends parallel to the longitudinal direction Y of the vehicle by changing the direction from the oblique direction to facilitate engagement with the lower crossmember 20 . The proximal end 152a of the first portion 152, therefore, has an area larger than that of the other portions of the first portion 152 to improve the bonding force with the lower crossmember 20. Here, proximal and distal refer to a side closer to the lower crossmember 20 as proximal, and a side farther from the lower crossmember 20 to distal.

The distal end 152b of the first portion 152 is bent downwardly from the first portion 152 or toward the ground. The distal end portion 152b includes a profile substantially the same as the outer surface of the side extension 30 to facilitate engagement with the side extension 30 .

The second portion 154 extends substantially vertically from the first portion 152 and includes a coupling flange 1154 coupled to the rear floor 10 . The coupling flange 1154 is bent from the second part 154 and is attached to the bottom surface of the rear floor 10 .

The second member 250 is coupled to the first member 150 . According to an embodiment of the present invention, the second member 250 includes a joint portion 252 , a vertical portion 254 , and a connecting flange 256 .

The bonding portion 252 is directly bonded to the first portion 152 of the first member 150 . According to the embodiment of the present invention, the lower surface of the bonding portion 252 may be bonded to the upper surface of the first portion 152 . According to another embodiment of the present invention, the upper surface of the bonding portion 252 may be bonded to the lower surface of the first portion 152 .

The vertical portion 254 is bent from the abutment 252 and extends in a substantially vertical direction. Accordingly, the vertical portion 254 and the second portion 154 face each other due to the coupling of the first member 150 and the second member 250 .

The connecting flange 256 is formed by bending from the periphery of the vertical portion 254 . The connecting flange 256 may include a pair of side connecting flanges 1256a and 1256b and an upper connecting flange 2256 . The side connecting flanges 1256a and 1256b respectively formed on both sides of the vertical portion 254 are bent obliquely from the vertical portion 254 , respectively, on the outer surface of the lower cross member 20 and the outside of the side extension 30 . extend substantially parallel to the side. The upper connecting flange 2256 formed on the upper side of the vertical part 254 is bent from the vertical part 254 and attached to the rear floor 10 . As a non-limiting example, the upper connecting flange 2256 may have the same configuration as the coupling flange 1154 .

Although the first member 150 and the second member 250 have been described as separate and different configurations, the first member 150 and the second member 250 may be integrally formed.

Fig. 6A shows a top side view of the rear floor of the rear structure of the vehicle according to the present invention, and Fig. 6B shows a bottom view of the rear floor of the rear structure of the vehicle according to the present invention.

The vehicle body secures the rear collision performance of the vehicle through the connection of the load path. Although a collision-preparing member is provided on the left and right sides of the vehicle, if the load is concentrated to one side, the member may not perform its function. If the load is transmitted in only one direction during the road pass, the load is concentrated in a part, and the collision energy cannot be properly absorbed and the local deformation becomes large.

According to the present invention, a structure serving to distribute the force of the bumper back beam, in particular, by including the diagonal member 50 supporting the lower cross member 20, prevents the back beam from breaking and prevents the lower cross member 20 from being pushed. Prevents and effectively distributes the impact force to both sides. In addition, according to the present invention, the behavior of each member can be kept constant even after a collision.

In FIG. 6B , B denotes a protection section of the battery 200 , and F denotes a protection section of the fuel tank 100 . According to the present invention, when a movable deformable barrier (MDB) collides with an offset (L1, 70% offset) to the left in the lateral direction (X), the fuel tank protection section (F) and the oblique member (50) The end line (L2) of This corresponds to the maximum position where the fuel tank can be protected. In addition, the maximized buckling induction section L3 is provided on both sides of the vehicle to stably absorb the shock.

That is, the present invention is excellent in dispersing the collision force in the case of a rear collision, in particular, an offset collision.

7A and 7B , according to an embodiment of the present invention, a reinforcing member 60 may be provided on the bottom surface of the rear floor 10 . The proximal end 60a of the reinforcing member 60 is coupled to the lower cross member 20 or the diagonal member 50, and the distal end 60b of the reinforcing member 60 is coupled to the bottom surface of the rear floor 10. can

8A and 8B, according to the embodiment of the present invention, the reinforcing member 60 includes a fourth space S4 that is an empty space therein.

As described above, since the allowable deformation amount of the fuel tank is very small in the case of the plug-in hybrid vehicle (PHEV), additional protection of the fuel tank 100 is required. Accordingly, in the present invention, one or more reinforcing members 60 support the fuel tank 100 , and in particular, the reinforcing member 60 is configured to have a fourth space S4 therein, so that the fuel tank more effectively in the event of a collision. (100) can be prevented.

9 to 11 , according to some embodiments of the present invention, the rear structure 1 of the vehicle further includes an upper crossmember 70 .

The upper crossmember 70 may provide additional support in response to a rear impact. The upper crossmember 70 is coupled to the upper surface of the rear floor 10 and extends substantially along the lateral direction X of the vehicle. The upper cross member 70 extends to both sides of the vehicle while enclosing the fuel tank arrangement unit 12 . According to the exemplary embodiment of the present invention, the fuel tank arrangement unit 12 is formed to protrude upward from the rear floor 10 at a predetermined angle. The fuel tank arrangement unit 12 is formed to be concave upwardly on the inside and is configured to accommodate the fuel tank 100 .

Both ends of the upper cross member 70 may be coupled to the wheel house panel 300 . The wheel house panel 300 is coupled to both sides of the rear floor 10 , and a quarter part 400 surrounding the wheel house panel 300 is provided above the wheel house panel 300 .

The upper cross member 70 is disposed on the upper surface of the rear floor 10 so as to overlap the lower cross member 20 , the diagonal member 50 and the side extension 30 with the rear floor 10 interposed therebetween. That is, the upper cross member 70 has a more advantageous structure for supporting a load while forming a closed cross-section with the first space S1 , the second space S2 , and the third space S3 .

According to the embodiment of the present invention, the upper cross member 70 includes a support portion 170 , an upper oblique portion 270 and a wing portion 370 .

The support 170 extends in the lateral direction X of the vehicle and extends substantially parallel to the lateral direction X of the vehicle. The support unit 170 is also coupled to the rear floor 10 so as to surround the fuel tank arrangement unit 12 . The support unit 170 extends from the upper surface of the rear floor 10 so as to overlap a portion of the lower cross member 20 .

The upper oblique portions 270 extend from both sides of the support unit 170 toward the lateral outer side of the vehicle, and more specifically, the upper oblique portions 270 extend from both sides of the support unit 170 to the lateral outer side of the vehicle, respectively. extend obliquely toward Each upper slanted portion 270 extends from the upper surface of the rear floor 10 so as to overlap each slanted member 50 under the rear floor 10 .

The wing portion 370 is bent at a predetermined angle from the upper oblique portion 270 . The wing part 370 is bent in a direction substantially perpendicular to the rear floor 10 or the upper cross member 70 to be coupled to the wheel house panel 300 .

12 to 14 , the upper cross member 70 forms an empty space therein by coupling with the rear floor 10 or the wheel house panel 300 . Between the support portion 170 and the rear floor 10 and between the upper diagonal portion 270 and the rear floor 10, a fifth space S5 extends approximately along the lateral direction X of the vehicle, and the wing portion 370 . A sixth space S6 is provided between and the wheel house panel 300 .

In addition, the upper cross member 70 includes a front flange 72 and a rear flange 74 extending outward in the lateral direction of the upper cross member 70 . The front flange 72 and the rear flange 72 facilitate stronger coupling with the rear floor 10 . When the upper cross member 70 is coupled to the rear floor 10, the front flange 72 and the rear flange 74 extend to the front and rear of the vehicle, respectively, and the upper cross member 70 and the rear floor (10) Alternatively, a fifth space S5 and a sixth space S6 may be formed between the upper cross member 70 and the wheel house panel 300 .

According to the embodiment of the present invention, the front flange 72 may protrude obliquely to have a predetermined angle with respect to the horizontal direction. In particular, the front flange 72 extending from the support unit 170 may extend obliquely to have the same angle as the fuel tank arrangement unit 12 since the fuel tank arrangement unit 12 has an upward angle. In this way, when the front flange 72 has an inclination, it is in surface contact with the fuel tank 100 when it is deformed due to a collision, thereby reducing deformation and damage.

According to the embodiment of the present invention, the rear flange 74 protrudes in a direction substantially parallel to the horizontal direction, and extends in parallel with the rear floor 10 so as to be coupled with the surface of the rear floor 10 to be joined. do.

According to the present invention, an additional reinforcing force can be provided as the portion overlapped with the rear floor 10 by the front flange 72 and the rear flange 74 is increased.

As shown in FIG. 15 , the rear impact force transmitted to the support unit 170 spreads along the upper oblique portions 270 on both sides while being distributed to both sides in the lateral direction (X). The impact force distributed along the upper oblique portion 270 spreads to the rear floor 10 and the wing portion 370 . In the wing part 370 , the load is spread while the force is distributed from the wheel house panel 300 to the quarter part 400 .

In addition, since the lower cross member 20 , the diagonal member 60 , and the like, and the upper cross member 70 provided under the rear floor 10 form a closed cross-sectional structure, it is possible to effectively support the rearward sliding in the event of a collision.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

1: rear structure of the vehicle 10: rear floor
12: fuel tank arrangement unit 20: lower cross member
22: end flange portion 30: side extension
32: side flange portion 40: coupling element
42: flange element 50: oblique member
60: reinforcing member 70: upper cross member
72: front flange 74: rear flange
100: fuel tank 150: first member
152: first part 154: second part
170: support 200: battery
250: second member 252: joint portion
254: vertical portion 256: connecting flange
270: upper oblique part 300: wheel house panel
370: wing 400: quarter
1154: coupling flange 1256a, 1256b: side connection flange
2256: upper connection flange S1: first space
S2: second space S3: third space
S4: fourth space S5: fifth space
S6: sixth space X: lateral
Y: longitudinal direction

Claims (12)

a lower cross member coupled to a rear bottom surface of the rear floor and extending in a lateral direction of the rear floor;
an oblique member having a proximal end that is one end coupled to the lower cross member, and a distal end of the other end extending from the lower cross member to both sides from the bottom surface of the rear floor in an oblique direction; and
an upper cross member coupled to an upper surface of the rear floor and overlapping the lower cross member and the diagonal member with the rear floor interposed therebetween;
A rear structure of the vehicle comprising: The method according to claim 1, wherein the lower cross member and the diagonal member, each comprising a first space and a third space, which are empty spaces inside by coupling with the rear floor,
The upper cross member includes a fifth space that is an empty space therein by coupling with the rear floor,
The rear structure of the vehicle, wherein the first space, the third space, and the fifth space are superimposed on each other. The rear structure of the vehicle according to claim 1, wherein the upper crossmember is configured to extend to a wheel house panel respectively coupled to both sides of the rear floor. The method according to claim 2, wherein a pair of side extensions respectively coupled to both sides of the bottom surface of the rear floor and both ends of the lower cross member to form a second space that is an empty space therein by coupling with the rear floor. The rear structure of the vehicle, which is to include. The rear structure of claim 4 , wherein a part of the side extension or the second space overlaps the fifth space. The method according to claim 1, wherein the lower cross member comprises an end flange portion formed by bending from both sides, respectively, joined to the bottom surface of the rear floor,
The rear structure of the vehicle, wherein the diagonal member includes a coupling flange that is respectively bent from both sides and joined to the bottom surface of the rear floor. The method according to claim 6, The upper cross member,
a front flange bent from one side to extend toward the front of the vehicle and joined to the upper surface of the rear floor; and
a rear flange bent from the other side to extend toward the rear of the vehicle and joined to the upper surface of the rear floor;
A rear structure of the vehicle comprising: The rear structure of claim 7 , wherein the front flange and the rear flange overlap the end flange portion and the coupling flange. The method according to claim 1, The upper cross member,
a support portion overlapping the lower cross member; and
a pair of upper diagonal parts extending from both sides of the support part and overlapping the diagonal members;
A rear structure of the vehicle comprising: The method according to claim 9, wherein the upper cross member,
a wing portion formed by bending from each upper oblique portion and joined to a wheel house panel substantially vertically coupled to both sides of the rear floor;
The rear structure of the vehicle further comprising a. The rear structure of claim 10 , wherein the wing portion forms a sixth space between the wheel house panel and the wheel house panel by coupling with the wheel house panel. The method according to claim 9, wherein the support portion is formed by bending from the support portion is joined to the upper surface of the rear floor, comprising a front flange extending toward the front of the vehicle,
and the front flange is configured to have the same profile as a surface profile of the rear floor.

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