Vehicle body rear part structure

Abstract

To provide a vehicle body rear part structure that can improve torsional rigidity of a vehicle body.SOLUTION: A vehicle body rear part structure 100, in which a rear lamp 8 located at a rear part of a vehicle body 2 is so located as to be fitted in a concave edge part 22 that is opened to the rear at a rear end of a side body outer panel 4 constituting a design surface on an outer side in a vehicle width direction of the vehicle body 2, includes: a lamp house panel 30 which is located at a rear part of the vehicle body 2, and is formed in a concave shape inside a vehicle; a lamp auxiliary reception part 21 which is connected to the concave edge part 22 of the side body outer panel 4, is formed in a concave shape inside the vehicle, and constitutes a storage area of a rear lamp 8 in cooperation with the lamp house panel 30; and a reinforcement panel 40 which is joined to the lamp house panel 30 and the lamp auxiliary reception part 21.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a rear body structure for a vehicle such as an automobile. [Background technology]

[0002] One example of a vehicle rear body structure is known from the rear body structure described in Patent Document 1. In the rear body structure described in Patent Document 1, tail lamps (rear lamps) are arranged at both the left and right ends of the rear surface of the rear body. The tail lamps arranged on the rear surface of the rear body extend partially to the side of the vehicle body. The tail lamps are housed in a lamp house panel arranged on the rear surface of the rear body and formed in a concave shape on the inside of the vehicle, and in a lamp auxiliary receiving portion formed on the rear end side of the side body outer panel that forms the side of the vehicle body.

[0003] Therefore, the lamp auxiliary receiving portion formed on the rear end side of the side body outer panel is concave from the rear end of the side body outer panel toward the front, and is concave from the outer surface of the side body outer panel toward the vehicle interior. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2022-187912 A Summary of the Invention [Problem to be solved by the invention]

[0005] In this way, in the rear body structure disclosed in Patent Document 1, the side body outer panel has a lamp auxiliary support portion that is formed in a concave shape from the rear end of the side body outer panel toward the front. Therefore, when the vehicle is traveling, as shown in Figures 8(a) and 8(b), the lamp auxiliary support portion alternates between an opening movement P1 in the vehicle width direction due to a compressive load F1 and a closing movement P2 in the vehicle width direction due to a tensile load F2. This causes the torsional rigidity of the vehicle body to decrease, making the body more susceptible to twisting when cornering, etc., and may result in a deterioration of handling performance.

[0006] The present invention has been made in consideration of the above-described situation, and its object is to provide a rear body structure that can improve the torsional rigidity of the vehicle body by suppressing movement due to compressive and tensile loads generated in the lamp auxiliary support portion. [Means for solving the problem]

[0007] One aspect of the present invention is a vehicle rear structure in which a rear lamp arranged at the rear of the vehicle body is arranged to fit into a rearwardly open concave edge portion at the rear end of a side body outer panel that constitutes a design surface on the outer side of the vehicle width direction of the vehicle body, the vehicle rear structure including a lamp house panel arranged at the rear of the vehicle body and formed concavely on the inside of the vehicle, a lamp auxiliary receiving portion that connects to the concave edge portion of the side body outer panel and is formed concavely on the inside of the vehicle, the lamp auxiliary receiving portion cooperating with the lamp house panel to form a storage area for the rear lamp, and a reinforcing panel that is joined to the lamp house panel and the lamp auxiliary receiving portion. Effect of the Invention

[0008] According to one aspect of the present invention, a rear vehicle body structure can be provided that can improve the torsional rigidity of the vehicle body by suppressing movement due to compressive loads and tensile loads generated in the lamp auxiliary support portion. [Brief description of the drawings]

[0009] [Figure 1]1 is a perspective view of a rear portion of a vehicle body according to an embodiment of the present invention, as viewed from the rear side. [Diagram 2] 1 is a side view of a rear body of a vehicle according to an embodiment of the present invention with a reinforcing panel removed; [Diagram 3] 1 is a diagram showing a rear body portion of a vehicle according to an embodiment of the present invention, viewed from the rear side with a reinforcing panel removed. [Figure 4] 4 is a partial enlarged view of the rear body of the vehicle according to the embodiment of the present invention shown in FIG. 3. [Diagram 5] 1 is a side view of a rear body of a vehicle according to an embodiment of the present invention, showing a state in which a reinforcing panel is attached; [Figure 6] 1 is a diagram showing a rear body portion of a vehicle according to an embodiment of the present invention, viewed from the rear side with a reinforcing panel attached; [Figure 7] FIG. 2 is a perspective view of a reinforcing panel according to an embodiment of the present invention. [Figure 8] FIG. 4 is a diagram showing a load due to the torsional rigidity of the vehicle body at the rear of the vehicle body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, a vehicle body rear structure 100 according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of the vehicle body rear of a vehicle 1 according to an embodiment of the present invention, viewed from the rear side. FIG. 2 is a view showing the right side vehicle body rear end of a vehicle 1 according to an embodiment of the present invention, viewed from the side of the vehicle 1, with a reinforcing panel removed. FIG. 3 is a view showing the right side vehicle body rear end of a vehicle 1 according to an embodiment of the present invention, viewed from the rear side of the vehicle 1, with a reinforcing panel removed. FIG. 4 is a partial enlarged view of the right side vehicle body rear end of the vehicle 1 in FIG. 2.

[0011] As shown in FIG. 1, a vehicle 1 according to this embodiment includes a vehicle body 2. The vehicle body 2 includes a roof portion 3 located at the upper portion of the vehicle body 2 and covering the vehicle interior, left and right side body outer panels 4 that form the left and right side portions at the rear side of the vehicle 1, and a rear bumper 5 that is located across the vehicle width direction at the lower part of the rear back side of the vehicle 1. The side body outer panel 4 is connected to the roof portion 3 at the upper portion, and the roof portion 3 and the side body outer panel 4 form the exterior surface of the vehicle body 2. A back door opening 6 is provided at the rear of the vehicle body 2, and the back door opening 6 is surrounded by the roof portion 3, the left and right side body outer panels 4, and the rear bumper 5. The left and right side body outer panels 4 form a design surface as an exterior surface on the outer side of the vehicle width direction of the vehicle body 2. The back door opening 6 is opened and closed by a back door 7. Rear lamps 8 are provided at the left and right side portions at the rear back of the vehicle body 2, and a part of the rear lamps 8 extends to the side surfaces of the vehicle body 2 in the vehicle width direction. The exterior side of the rear lamp 8 constitutes the design surface of the rear of the vehicle body 2 and the side in the vehicle width direction. A rear wheel house 10 that covers the rear wheel 9 is provided at the bottom of the side body outer panel 4. In the following description, the arrow F direction is the front in the front-rear direction of the vehicle 1 (hereinafter referred to as the front-rear direction), the arrow R direction is the right side in the vehicle width direction of the vehicle 1 (hereinafter referred to as the vehicle width direction), and the arrow U direction is the upper side in the vertical direction of the vehicle 1 (hereinafter referred to as the vertical direction). In addition, since the vehicle 1 has a left-right symmetrical structure, the following description will mainly focus on the right side of the rear of the vehicle body 2, including the right side body outer panel 4, unless otherwise specified. In addition, unless otherwise specified, the "inner side in the vehicle width direction" or the "inner side of the vehicle" refers to the inside of the vehicle cabin, and the "outer side in the vehicle width direction" or the "outer side of the vehicle cabin" refers to the outside of the vehicle cabin.

[0012] A fender panel 11 is provided in front of the side portions in the vehicle width direction of the vehicle body 2, and a front side door 12 and a rear side door 13 for passengers to get in and out of the vehicle are provided behind the fender panel 11. The fender panel 11, the front side door 12, the rear side door 13, and the side body outer panel 4 each have a character line 14 that is formed in a recessed shape of a predetermined width on the design surface, which is the exterior surface of each, and extends in the front-to-rear direction. The character line 14 provided on the side body outer panel 4 extends toward a rear end 15 of the side body outer panel 4. In addition, a lamp auxiliary receiving portion 21 (described later) that receives a part of the rear lamp 8 that extends to the side surface of the vehicle body 2 is formed on the rear end side of the side body outer panel 4.

[0013] Next, the structure of the vehicle body rear structure 100 of this embodiment in a state in which a reinforcing panel 40 described later is removed will be described with reference to FIG. 2, as viewed from the side of the vehicle body 2. FIG. 2 is a view of the rear side of the vehicle body 2 as viewed from the right side (hereinafter referred to as a side view). A recessed edge portion 22 with an open rear end is formed at the rear end 15 of the side body outer panel 4. In a side view, the recessed edge portion 22 is substantially V-shaped with an apex on the front side, and has an upper side portion 23 extending substantially horizontally forward from the rear end 15 of the side body outer panel 4, an oblique side portion 24 extending forward and upward from the rear end 15 of the side body outer panel 4 below the upper side portion 23, and an arc-shaped tip portion 25 disposed between the upper side portion 23 and the oblique side portion 24. The angle formed by the upper side portion 23 and the oblique side portion 24 across the apex on the front side of the recessed edge portion 22 is an acute angle. A lamp auxiliary receiving portion 21 is formed on the rear end side of the side body outer panel 4, which is connected to the recessed edge portion 22 and is formed in a recessed shape toward the vehicle interior side from the design surface, which is the exterior surface of the side body outer panel 4. That is, the lamp auxiliary receiving portion 21 is formed on the rear end side of the side body outer panel 4 so as to be continuous with the recessed edge portion 22. A part of the rear lamp 8 is accommodated in the lamp auxiliary receiving portion 21.

[0014] The character line 14, which extends in the front-rear direction with a predetermined width, has an upper line 14u on the upper side bent on the design surface of the side body outer panel 4 and a bottom line 14b on the lower side bent on the design surface of the side body outer panel 4, and is formed in a concave shape with respect to the design surface of the side body outer panel 4 between the upper line 14u and the bottom line 14b. That is, the character line 14 is defined as having a predetermined vertical width between the upper line 14u and the bottom line 14b (hereinafter, referred to as the width of the character line 14). The character line 14 extends toward the rear end 15 of the side body outer panel 4 and connects to the recessed edge portion 22. The upper line 14u connects to the recessed edge portion 22 below the upper side portion 23 of the recessed edge portion 22, and the bottom line 14b connects to the oblique side portion 24 of the recessed edge portion 22. Therefore, the rear end 16 of the character line 14 appears to form a part of the inner peripheral surface of the auxiliary lamp receiving portion 21. In this embodiment, the character line 14 is formed in a concave shape on the design surface of the side body outer panel 4, but is not necessarily limited to this. The character line 14 may be formed in a convex shape on the design surface of the side body outer panel 4.

[0015] In addition, in this embodiment, the upper line 14u is connected to the recessed edge portion 22 below the upper side portion 23, and therefore is connected to the recessed edge portion 22 over the entire width of the character line 14, but this is not necessarily limited to this. For example, a configuration in which the upper line 14u is connected to the rear end 15 of the side body outer panel 4 above the upper side portion 23, and thus a part of the width of the character line 14 is connected to the recessed edge portion 22, may also be used. In other words, a configuration in which a part of the rear end 16 of the character line 14 is connected to the recessed edge portion 22 may also be used.

[0016] Next, referring to FIG. 3, the vehicle rear structure 100 of this embodiment will be described as viewed from the rear side of the vehicle body 2. FIG. 3 is a view of the vehicle rear structure 100 as viewed from the rear side in a state in which the rear bumper 5 and the back door 7 arranged at the rear of the vehicle body 2 and a reinforcing panel 40 described later have been removed, and shows the right side of the rear of the vehicle body 2. In FIG. 3, the rear end 15 of the side body outer panel 4 is exposed. A rear skirt panel 17 is arranged below the back door opening 6, and is positioned across the vehicle width direction. A side body outer extension 18 is arranged on the rear end side of the side body outer panel 4 on the vehicle inner side, and the side body outer extension 18 is joined to the vehicle inner surface of the side body outer panel 4. The lower end of the side body outer extension 18 is approximately at the same position as the upper side portion 23 of the recessed edge portion 22 in the vertical direction. The upper end of the right side of the rear skirt panel 17 is located below the oblique side portion 24 of the recessed edge portion 22 in the vertical direction. A lamp house panel 30 is disposed between the lower end of the side body outer extension 18 and the upper end of the right side of the rear skirt panel 17. The lamp house panel 30 is formed in a concave shape on the vehicle inner side and accommodates the rear lamp 8. The lower end of the lamp house panel 30 is joined to the upper end of the right side of the rear skirt panel 17, the left upper end of the lamp house panel 30 is joined to the lower end of the side body outer extension 18, and the right end of the lamp house panel 30 is joined to the side body outer panel 4. A space is provided between the upper end of the lamp house panel 30 other than the left upper end and the rear end 16 of the side body outer panel 4. The rear lamp 8 disposed on the rear surface of the rear part of the vehicle body 2 is disposed so that a part of it extends to the side surface of the vehicle body 2, so that the rear lamp 8 is accommodated in the lamp house panel 30 and the lamp auxiliary receiving portion 21. In this embodiment, most of the rear lamp 8 is accommodated in the lamp house panel 30, and the remaining part of the rear lamp 8 is accommodated in the lamp auxiliary receiving portion 21. Therefore, the lamp auxiliary receiving portion 21 cooperates with the lamp house panel 30 to form a storage area for the rear lamp 8 .

[0017] FIG. 4 is an enlarged view of the right side of the rear part of the vehicle body 2 in FIG. 3. The lamp auxiliary receiving part 21 has an inner peripheral part 21a that stands from the design surface of the side body outer panel 4 toward the vehicle interior side along the recessed edge part 22, and a bottom flange 21b that stands from the tip of the inner peripheral part 21a toward the center side of the lamp auxiliary receiving part 21 that is V-shaped in side view. Therefore, when the rear end side of the side body outer panel 4 is viewed in a cross section perpendicular to the design surface of the side body outer panel 4, the design surface of the side body outer panel 4, the inner peripheral part 21a, and the bottom flange 21b are formed in a crank shape. In the bottom flange 21b, a tongue-shaped part 21c that extends in a tongue shape is provided at a position corresponding to the tip part 25, and a through hole 21d for attaching the rear lamp 8 is formed in the center of the tongue-shaped part 21c. A reinforcing panel 40 described later is joined to the bottom flange 21b of the lamp auxiliary receiving part 21.

[0018] 2 to 4 show the reinforcing panel 40 constituting the invention according to this embodiment, in a state where the reinforcing panel 40 that is joined to the lamp house panel 30 and the lamp auxiliary receiving portion 21 is not included. When the reinforcing panel 40 is not included, the vehicle body rear structure 100 of this embodiment has the lamp auxiliary receiving portion 21 that is connected to the V-shaped recessed edge portion 22 that extends forward from the rear end 15 of the side body outer panel 4, and therefore the torsional rigidity is reduced. Therefore, the vehicle body rear structure 100 of this embodiment has the reinforcing panel 40 that is joined to the lamp house panel 30 and the lamp auxiliary receiving portion 21, thereby improving the torsional rigidity of the vehicle body 2.

[0019] Fig. 5 is a diagram showing the state in which the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30, as viewed from the side of the vehicle body 2, and Fig. 6 is a diagram showing the state in which the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30, as viewed from the rear side of the vehicle body 2. Fig. 7 is a perspective view of the reinforcing panel 40 alone, as viewed from the rear side of the vehicle body 2 ...

[0020] As shown in FIG. 7, the reinforcing panel 40 has a first joint 41 that is joined to the lamp auxiliary receiving portion 21, a second joint 42 that is joined to the lamp house panel 30, and a main body portion 43 that is arranged to extend between the first joint 41 and the second joint 42. The first joint 41 is formed so as to follow the shape of the inner periphery 21a and the bottom flange 21b of the lamp auxiliary receiving portion 21 when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21. The first joint 41 is joined to the inner periphery 21a and the bottom flange 21b, so that the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21. A flange 44 is formed on the outer periphery of the first joint 41. The flange 44 is formed so as to face the vehicle interior surface of the side body outer panel 4 when the first joint 41 is joined to the inner periphery 21a and the bottom flange 21b.

[0021] The main body 43 is formed to stand from the first joint portion 41 toward the vehicle interior side in a state where the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21. The main body 43 is provided with a through hole 45 for attaching the rear lamp 8 when the rear lamp 8 is accommodated in the lamp auxiliary receiving portion 21 and the lamp house panel 30. The through hole 45 coincides with the through hole 21d formed in the lamp auxiliary receiving portion 21 in a state where the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30.

[0022] The reinforcing panel 40 has a first bead 46 and a second bead 47 formed in a convex shape. The first bead 46 is formed on the main body 43 so as to be convex toward the outside of the vehicle cabin when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30. The second bead 47 is formed so as to surround the through hole 45 from the first joint portion 41 so as to be convex toward the inside of the vehicle when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30. The second bead 47 is Y-shaped having one second bead joint side 48 arranged at the first joint portion 41 and two second bead main body sides 49 arranged from the first joint portion 41 to the main body 43. The two second bead main body sides 49 branch off from the second bead joint side 48 so as to surround and sandwich the through hole 45. The second joint portion 42 is disposed below the main body portion 43 when viewed in the orientation shown in FIG.

[0023] Next, the state in which the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 of the side body outer panel 4 and the lamp house panel 30 will be described with reference to Figs. 5 and 6. The reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30 from the vehicle interior side. The first joint portion 41 of the reinforcing panel 40 is connected to the vehicle interior side surface of the inner periphery 21a and the bottom flange 21b of the lamp auxiliary receiving portion 21 and joined by spot welding. The second joint portion 42 of the reinforcing panel 40 is connected to the vehicle interior side surface of the lamp house panel 30 and joined by spot welding. By joining the reinforcing panel 40 to the lamp house panel 30 and the lamp auxiliary receiving portion 21, the movement P1 of the lamp auxiliary receiving portion 21 formed in a concave shape opening in the vehicle width direction due to the compressive load F1 shown in Fig. 8(a) and the movement P2 of the lamp auxiliary receiving portion 21 closing in the vehicle width direction due to the tensile load F2 shown in Fig. 8(b) are suppressed. This makes it possible to improve the torsional rigidity of the vehicle body 2.

[0024] In addition, in a state where the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 of the side body outer panel 4 and the lamp house panel 30, the flange 44 of the reinforcing panel 40 is disposed on the vehicle interior side of the side body outer panel 4 so as to face the vehicle interior side surface of the side body outer panel 4. A part of the flange 44 is disposed along a portion of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22. That is, a part of the flange 44 is disposed so as to overlap the character line 14 from the vehicle interior side of the side body outer panel 4 in the vicinity of the recessed edge portion 22. By disposing a part of the flange 44 along a portion of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22, the lamp auxiliary receiving portion 21 formed in a recessed shape is strengthened against both the compressive load F1 shown in FIG. 8(a) and the tensile load F2 shown in FIG. 8(b), and the movement P1 of opening in the vehicle width direction and the movement P2 of closing are suppressed. This can further improve the torsional rigidity of the vehicle body 2.

[0025] In the present embodiment, the case where the rear end 16 of the character line 14 is connected to the recessed edge portion 22 over the entire width of the character line 14 has been described. Next, a case where the upper line 14u of the character line 14 is connected to the rear end 15 of the side body outer panel 4 above the upper side portion 23, so that not the entirety but a part of the rear end 16 of the character line 14 is connected to the recessed edge portion 22 will be described. When a part of the rear end 16 of the character line 14 is connected to the recessed edge portion 22, it is sufficient that at least a part of the flange 44 is disposed on the vehicle interior side of the side body outer panel 4 along the part of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22. In other words, it is sufficient that at least a part of the flange 44 is disposed so as to overlap the character line 14 from the vehicle interior side of the side body outer panel 4 in the vicinity of the recessed edge portion 22 within the range of the part of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22. In this way, by arranging at least a part of the flange 44 on the vehicle interior side of the side body outer panel 4 along the part of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22, the lamp auxiliary receiving portion 21 formed in a recessed shape is strengthened against both the compressive load F1 shown in FIG. 8(a) and the tensile load F2 shown in FIG. 8(b), and the opening movement P1 in the vehicle width direction and the closing movement P2 are suppressed. This makes it possible to further improve the torsional rigidity of the vehicle body 2. As described above, in the case where the rear end 16 of the character line 14 is connected to the recessed edge portion 22 over the entire width of the character line 14 and the case where a part of the rear end 16 of the character line 14 is connected to the recessed edge portion 22, it is sufficient that at least a part of the flange 44 is arranged on the vehicle interior side of the side body outer panel 4 along the part of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22 in the range of the part where the rear end 16 of the character line 14 is connected to the recessed edge portion 22.

[0026] The flange 44 of the reinforcing panel 40, which is disposed so as to face the vehicle interior surface of the side body outer panel 4, is disposed with a clearance provided between it and the vehicle interior surface of the side body outer panel 4. The width of this clearance is set so that the flange 44 does not come into contact with the vehicle interior surface of the side body outer panel 4 even when the flange 44 of the reinforcing panel 40 vibrates due to vibrations, for example, while the vehicle 1 is traveling. This makes it possible to further improve the torsional rigidity of the vehicle body 2 while suppressing noise caused by vibration sounds.

[0027] 5, in a side view, when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 of the side body outer panel 4 and the lamp house panel 30, the reinforcing panel 40 is arranged to cover the tip portion 25 of the recessed edge portion 22 constituting the lamp auxiliary receiving portion 21 from the vehicle interior side of the side body outer panel 4. When the vehicle body rear structure 100 has the lamp auxiliary receiving portion 21 connected to the recessed edge portion 22 formed in a V-shape from the rear end 15 of the side body outer panel 4 toward the front, this causes a decrease in the torsional rigidity of the vehicle body 2. However, when the angle formed by the upper side portion 23 and the oblique side portion 24 across the apex on the front side of the recessed edge portion 22 constituting the lamp auxiliary receiving portion 21 is an acute angle, the decrease in the torsional rigidity of the vehicle body 2 becomes significant. However, in this embodiment, in a side view, the reinforcing panel 40 is arranged to cover the tip portion 25 of the recessed edge portion 22 constituting the lamp auxiliary receiving portion 21 from the vehicle interior side of the side body outer panel 4. Therefore, the concave lamp auxiliary receiving portion 21 is prevented from opening in the vehicle width direction P1 due to the compressive load F1 shown in Fig. 8(a) and from closing in the vehicle width direction P2 due to the tensile load F2 shown in Fig. 8(b). This improves the torsional rigidity of the vehicle body 2.

[0028] As shown in FIG. 6, when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 of the side body outer panel 4 and the lamp house panel 30, the first bead 46 extends in the vehicle width direction to the region of the part of the rear end 16 of the character line 14 that is connected to the recessed edge portion 22. That is, in the range of the part where the rear end 16 of the character line 14 is connected to the recessed edge portion 22, a part of the first bead 46 of the reinforcing panel 40 overlaps with the character line 14 in the vehicle width direction. In the rear view, in the range of the part where the rear end 16 of the character line 14 is connected to the recessed edge portion 22 in the width of the character line 14, the first bead 46 overlaps with the character line 14 in the vehicle width direction, so that the lamp auxiliary receiving portion 21 formed in a recessed shape is strong against both the compressive load F1 shown in FIG. 8(a) and the tensile load F2 shown in FIG. 8(b), and the opening movement P1 and closing movement P2 in the vehicle width direction are suppressed. This can further improve the torsional rigidity of the vehicle body 2. In addition, in rear view, the inclination of the first bead 46 in the vehicle width direction is substantially the same as the inclination of the portion where the rear end 16 of the character line 14 connects to the recessed edge portion 22. This makes it possible to further improve the torsional rigidity of the vehicle body 2.

[0029] As described above, the second bead 47 of the reinforcing panel 40 is formed from the first joint portion 41 to the main body portion 43 so as to be convex toward the vehicle interior when the reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lamp house panel 30, but a space is provided between the upper end of the lamp house panel 30 other than the upper left end in the rear view and the lamp auxiliary receiving portion 21, so the second bead 47 does not interfere with other members. Since the second bead 47 is formed on the reinforcing panel 40, the torsional rigidity of the vehicle body 2 can be further improved. Therefore, the rear lamp 8 can be reliably fixed to the lamp house panel 30 and the lamp auxiliary receiving portion 21. In addition, since the through hole 45 for attaching the rear lamp 8 is formed in the reinforcing panel 40, the rigidity around the through hole 45 is reduced, but since the two second bead main body portions 49 of the second bead 47 are arranged to sandwich the through hole 45, the effect of the reduced rigidity can be reduced.

[0030] As shown in the above embodiment, when the vehicle body rear structure 100 has the lamp auxiliary receiving portion 21 connected to the recessed edge portion 22 formed in a V-shape from the rear end 15 of the side body outer panel 4 toward the front, this causes a decrease in the torsional rigidity of the vehicle body 2. However, in the vehicle body rear structure 100 of this embodiment, the reinforcing panel 40 is provided to join the lamp house panel 30 and the lamp auxiliary receiving portion 21, thereby suppressing the movement P1 of the lamp auxiliary receiving portion 21 formed in a recessed shape in the vehicle width direction caused by the compressive load F1 shown in FIG. 8(a) and the movement P2 of the lamp auxiliary receiving portion 21 formed in a vehicle width direction caused by the tensile load F2 shown in FIG. 8(b). This makes it possible to improve the torsional rigidity of the vehicle body 2. In this case, the character line 14 is not essential. This is because, even if the character line 14 is not present, when the vehicle body 2 has the lamp auxiliary receiving portion 21 connected to the recessed edge portion 22 formed in a V-shape from the rear end 15 of the side body outer panel 4 toward the front, the torsional rigidity of the vehicle body 2 decreases. In addition, in the present embodiment, the angle formed by the upper side portion 23 and the oblique side portion 24 across the front vertex of the recessed edge portion 22 is an acute angle, but it is not essential that the angle formed by the upper side portion 23 and the oblique side portion 24 across the front vertex of the lamp auxiliary receiving portion 21 is an acute angle. This is because, when the lamp auxiliary receiving portion 21 is connected to the recessed edge portion 22 formed in a V-shape extending forward from the rear end 15 of the side body outer panel 4, the torsional rigidity of the vehicle body 2 decreases even if the angle formed by the upper side portion 23 and the oblique side portion 24 across the front vertex of the recessed edge portion 22 is not an acute angle. Therefore, even if the angle formed by the upper side 23 and the oblique side 24 across the apex on the front side of the recessed edge 22 is not an acute angle, the reinforcing panel 40 joined to the lamp house panel 30 and the lamp auxiliary support part 21 can be provided to suppress the movement P1 of the recessed lamp auxiliary support part 21 opening in the vehicle width direction due to the compressive load F1 shown in Fig. 8(a) and the movement P2 of the recessed lamp auxiliary support part 21 closing in the vehicle width direction due to the tensile load F2 shown in Fig. 8(b). This can improve the torsional rigidity of the vehicle body 2.

[0031] Although several embodiments of the present invention have been described above, it should be noted that the present invention is not limited to the above-described embodiments, and various modifications and variations are possible within the scope of the present invention. [Explanation of symbols]

[0032] 1 vehicle 2. Body 3 Roof section 4 Side body outer panel 5 Rear bumper 6 Back door opening 7. Backdoor 8 Rear lamp 9 Rear wheel 10 Rear wheel house 11 Fender Panel 12 Front side door 13 Rear side door 14 Character Line 14u Upper Line 14b Bottom Line 15 Rear end of side body outer panel 16 Rear end of character line 17 Rear skirt panel 18 Side body outer extension 21 Lamp auxiliary holder 21a Inner circumference 21b Bottom flange 21c tongue 21d through hole 22 Concave edge 23 Top 24 Hypotenuse 25 Tip 30 Lamp House Panel 40 Reinforcement Panel 41 1st joint 42 Second joint 43 Main body 44 Flange 45 Through hole 46 First bead 47 2nd bead 48 Second bead joint side 49 Second bead body side 100 Rear body structure

Claims

1. A vehicle rear structure, in which a rear lamp disposed at a rear portion of a vehicle body is disposed so as to fit into a recessed edge portion that is open toward the rear at a rear end of a side body outer panel that constitutes a design surface on an outer side in a vehicle width direction of the vehicle body, a lamp house panel disposed at a rear portion of the vehicle body and formed in a concave shape on an inner side of the vehicle; a lamp auxiliary receiving portion connected to the recessed edge portion of the side body outer panel and formed in a recessed shape on the vehicle interior side, the lamp auxiliary receiving portion cooperating with the lamp house panel to form a storage area for the rear lamp; a reinforcing panel joined to the lamp house panel and the auxiliary lamp receiving portion; A vehicle rear structure comprising:

2. the side body outer panel has a character line that is formed in a concave or convex shape on the design surface with a predetermined width and extends in the front-rear direction, 2. The vehicle rear structure according to claim 1, wherein at least a portion of a rear end of the character line is connected to the recessed edge portion.

3. the reinforcing panel has a first joint portion joined to the lamp auxiliary receiving portion from the vehicle interior side, a second joint portion joined to the lamp house panel from the vehicle interior side, a main body portion extending between the first joint portion and the second joint portion, and a flange formed on a periphery of the first joint portion, 3. The vehicle rear structure according to claim 2, wherein at least a portion of the flange is disposed on the vehicle interior side of the side body outer panel so as to follow the portion of the rear end of the character line that is connected to the recessed edge portion.

4. The main body portion has a first bead formed in a convex shape and extending in a vehicle width direction, 4. The vehicle rear structure according to claim 3, wherein, in a rear view, the first bead extends in the vehicle width direction to a region of a portion of the rear end of the character line that is connected to the recessed edge portion.

5. the reinforcing panel has a through hole for fixing the rear lamp and a second bead formed in a concave shape on the vehicle inner side, 4. The vehicle rear structure according to claim 3, wherein the second bead is Y-shaped and extends from the auxiliary lamp receiving portion toward the through hole and branches out to surround the through hole.

6. 2. The vehicle rear structure according to claim 1, wherein the recessed edge portion is formed in an acute V-shape in a side view.

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