Vehicle body rear part structure

Abstract

To provide a vehicle body rear part structure that improves torsional rigidity of a vehicle body.SOLUTION: A vehicle body rear part structure, in which a rear lamp 8 is fitted in a concave edge part 22 that is opened to the rear at a rear end of a side body outer panel 4 on an outer side in a vehicle width direction, includes; a lamp house panel 30 which is located at a rear part of a vehicle body, 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; a rear wheel house 10 which covers a rear wheel, and comprises an inner wheel house 10a including a first flange part 10c and an outer wheel house 10b which includes a second flange part 10d and is located on the outer side in the vehicle width direction with respect to the inner wheel house 10a; and a connection member 50 which is connected to at least one of the first flange part 10c and the second flange part 10d, and the lamp house panel 30.SELECTED DRAWING: Figure 4

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, the rear body structure disclosed in Patent Document 1 has a side body outer panel that 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, which causes a decrease in the torsional rigidity of the vehicle body and makes the body more susceptible to twisting when cornering, etc., which could result in a deterioration of handling performance.

[0006] The present invention has been made in consideration of the above-mentioned circumstances, and an object of the present invention is to provide a rear vehicle body structure that can improve the torsional rigidity of the vehicle body. [Means for solving the problem]

[0007] One aspect of the present invention is a vehicle body rear structure in which a rear lamp arranged at the rear of the vehicle body is arranged to fit into a rear-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 body in the vehicle width direction, the vehicle body 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; a rear wheel house covering the rear wheels of the vehicle, the rear wheel house including an inner wheel house having a first flange portion and an outer wheel house having a second flange portion that is arranged outward in the vehicle width direction relative to the inner wheel house; and a connecting member that connects at least one of the first flange portion and the second flange portion to the lamp house panel. Effect of the Invention

[0008] According to one aspect of the present invention, it is possible to provide a vehicle rear body structure that can improve the torsional rigidity of a vehicle body. [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 part of a vehicle according to an embodiment of the present invention, viewed from the rear side with a reinforcing panel and a connecting member removed. [Figure 4]1 is a side view of a rear vehicle body of a vehicle according to an embodiment of the present invention, showing a state in which a reinforcing panel and a connecting member are attached. [Diagram 5] FIG. 2 is a perspective view of a rear wheel house seen from the rear side of the vehicle body rear part of the vehicle according to the embodiment of the present invention. [Figure 6] 1 illustrates a coupling member according to an embodiment of the present invention. [Figure 7] 1 is a diagram showing a side view of a rear body of a vehicle according to an embodiment of the present invention, viewed from inside the vehicle. [Figure 8] 1 is a perspective view showing a rear vehicle body of a vehicle according to an embodiment of the present invention, with a connecting member included therein; [Figure 9] 1 is a diagram showing a rear portion of a vehicle body according to an embodiment of the present invention, viewed from the rear side, in a state in which a connecting member is provided. 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 of a lamp house 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 constituting the left and right side portions at the rear side of the vehicle 1, and a rear bumper 5 located across the vehicle width direction at the lower rear side of the rear 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 constitute a design surface as an 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 constitute 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 sides at the rear of the rear 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 vehicle body rear structure 100 of this embodiment will be described with reference to FIG. 2, in a state where a reinforcing panel 40 of a lamp house panel 30 described later is removed, 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 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 circumferential 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 lower panel 45 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 lower panel 45 constitutes a part of the lamp house panel 30 described later. The lower panel 45 is formed in a concave shape on the vehicle inner side and accommodates the rear lamp 8. The lower end of the lower panel 45 is joined to the upper end of the right side of the rear skirt panel 17, the upper end of the left side of the lower panel 45 is joined to the lower end of the side body outer extension 18, and the right end of the lower panel 45 is joined to the side body outer panel 4. A space is provided between the upper end of the lower panel 45 other than the upper end on the left side 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 lower panel 45 and the lamp auxiliary receiving portion 21. In this embodiment, most of the rear lamp 8 is accommodated in the lower panel 45, 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 lower panel 45 to form a storage area for the rear lamp 8 .

[0017] The lamp house panel 30 has a lower panel 45 that houses the rear lamp 8 and a reinforcing panel 40 (described later) that is joined to the lamp auxiliary receiving portion 21, but Figs. 2 and 3 show an embodiment in which the lamp house panel 30 does not have the reinforcing panel 40. When the reinforcing panel 40 is not included, the vehicle body rear structure 100 of this embodiment has the lamp auxiliary receiving portion 22 that is connected to the V-shaped recessed edge portion 22 formed 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 lower panel 45 and the lamp auxiliary receiving portion 21, and also has a connecting member 50 (described later) that connects the lamp house panel 30 and the rear wheel house 10 to suppress the movement acting in the front-rear direction (movement P1 acting in the direction of the white arrow shown in Fig. 4) and the movement acting in the vehicle width direction (movement P2 acting in the direction of the white arrow shown in Fig. 9), thereby improving the torsional rigidity of the vehicle body 2. However, in this embodiment, the reinforcing panel 40 of the lamp house panel 30 is not an essential component. A connecting member 50, which will be described later and connects the lamp house panel 30 and the rear wheel house 10, is an essential component in this embodiment.

[0018] The reinforcing panel 40 joined to the lamp auxiliary receiving portion 21 and the connecting member 50 connecting the lamp house panel 30 and the rear wheel house 10 will be described with reference to Figs. 4 and 5. Fig. 4 is a view of the side body outer panel 4 shown by a two-dot chain line as viewed from the side of the vehicle body 2. Fig. 5 is a perspective view of the rear wheel house 10 as viewed from the rear side and from the inside of the vehicle. The vehicle body rear structure 100 has a lamp house panel 30 that constitutes a storage area for the rear lamp 8. The lamp house panel 30 has a reinforcing panel 40 joined to the lower panel 45 and the lamp auxiliary receiving portion 21, and a part of the lower panel 45 and a part of the lamp auxiliary receiving portion 21 are joined. The lower panel 45 constitutes the storage area for the rear lamp 8. 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 lower panel 45, and a main body portion 43 that is disposed so as to extend between the first joint 41 and the second joint 42. The reinforcing panel 40 is joined to the lamp auxiliary receiving portion 21 and the lower panel 45 from the vehicle interior side. The first joint 41 of the reinforcing panel 40 is connected to the vehicle interior side surface of the lamp auxiliary receiving portion 21 and joined by spot welding. The second joint 42 of the reinforcing panel 40 is connected to the vehicle interior side surface of the lower panel 45 and joined by spot welding. By joining the reinforcing panel 40 to the lower panel 45 and the lamp auxiliary receiving portion 21, the torsional rigidity of the vehicle body 2 can be improved.

[0019] The vehicle rear structure 100 also has a connecting member 50 that connects the lamp house panel 30 and the rear wheel house 10. The lamp house panel 30 is disposed rearward and above the rear wheel house 10. As shown in FIG. 5, the rear wheel house 10 is configured by joining an inner wheel house 10a disposed on the vehicle interior side and an outer wheel house 10b disposed on the vehicle exterior side. The inner wheel house 10a has a plate-shaped first flange portion 10c that stands toward the outer periphery, and the outer wheel house 10b also has a plate-shaped second flange portion 10d that stands toward the outer periphery. The first flange portion 10c and the second flange portion 10d are joined to each other to form a flange joint portion 10e. That is, the flange joint portion 10e is configured by joining the surfaces of the first flange portion 10c and the second flange portion 10d to each other. The rear wheel house 10 has a rear suspension holding portion 10f formed in the inner wheel house 10a. The rear suspension holding portion 10f holds a rear suspension (not shown).

[0020] As shown in FIG. 4, one end of the connecting member 50 is connected to the flange joint 10e of the rear wheel house 10. A bracket 31 is fixed to the lamp house panel 30, and the other end of the connecting member 50 is connected to the bracket 31 fixed to the lamp house panel 30. That is, one end of the connecting member 50 is connected to the flange joint 10e where the first flange portion 10c and the second flange portion 10d are joined to each other, and the other end of the connecting member 50 is connected to the lamp house panel 30 via the bracket 31 fixed to the lamp house panel 30. The connecting member 50 connected to the lamp house panel 30 and the rear wheel house 10 faces rearward and upward from the rear wheel house 10. The vehicle body rear structure 100 of this embodiment has the connecting member 50 connected to the lamp house panel 30 and the rear wheel house 10, thereby suppressing the movement acting in the front-rear direction (the movement P1 acting in the direction of the white arrow shown in FIG. 4) and improving the torsional rigidity of the vehicle body 2. Moreover, one end of the connecting member 50 is connected to the flange joint 10e of the rear wheel house 10, i.e., the flange joint 10e where the first flange portion 10c and the second flange portion 10d are joined, thereby further improving the torsional rigidity of the vehicle body 2. In this embodiment, one end of the connecting member 50 is connected to the flange joint 10e of the rear wheel house 10, but this is not necessarily limited to this. One end of the connecting member 50 may be connected to either the first flange portion 10c or the second flange portion 10d. In addition, the other end of the connecting member 50 is connected to the lamp house panel 30 via a bracket 31 fixed to the lamp house panel 30, but it may be connected directly to the lamp house panel 30 without the bracket 31.

[0021] The flange joint 10e is provided with a connecting hole 10g for connecting one end of the connecting member 50. The bracket 31 is provided with a connecting hole 32 for connecting the other end of the connecting member 50. One end of the connecting member 50 is provided with a connecting hole 51 for connecting to the flange joint 10e, which will be described in detail later. The other end of the connecting member 50 is provided with a connecting hole 52 for connecting to the bracket 31, which will be described in detail later. The flange joint 10e and the connecting member 50 are rotatably connected by the connecting hole 10g and the pin member 33 inserted into the connecting hole 51. The bracket 31 and the connecting member 50 are rotatably connected by the connecting hole 32 and the pin member 33 inserted into the connecting hole 52. In this embodiment, the pin member 33 is composed of a bolt and a nut. However, the pin member 33 is not limited to a bolt and a nut. As long as the connecting member 50 is rotatably connected, it may be a pin equipped with a stopper.

[0022] The connecting hole 10g provided in the flange joint portion 10e constitutes the first support portion of the invention according to this embodiment. Also, the connecting hole 32 provided in the bracket 31 constitutes the second support portion of the invention according to this embodiment. However, the configuration of the first support portion is not limited to this. For example, a support pin may be erected at the position of the connecting hole 10g provided in the flange joint portion 10e instead of the connecting hole 10g to form the first support portion. This is because the connecting member 50 can be rotatably connected by inserting the connecting hole 51 provided in the connecting member 50 into the support pin. Similarly, a support pin may be erected at the position of the connecting hole 32 provided in the bracket 31 instead of the connecting hole 32 to form the second support portion. In this embodiment, the connecting member 50 is structured to be rotatably connected by the connecting hole 10g and the connecting hole 32. If the connecting member 50 is fixedly supported so as not to rotate at the connecting hole 10g and the connecting hole 32, the connecting member 50 may break or crack if subjected to bending stress. However, in this embodiment, the connecting member 50 is rotatably connected at the connecting hole 10g and the connecting hole 32, and some of the force is dispersed as rotational energy. Therefore, the structure allows the upper and lower forces to escape while restricting the movement acting in the vehicle width direction (movement P2 acting in the direction of the white arrow in FIG. 9) and the movement acting in the front-rear direction (movement P1 acting in the direction of the white arrow in FIG. 4), thereby further improving the performance of the torsional rigidity of the vehicle body. In addition, since the connecting member 50 is rotatably connected at the connecting hole 10g and the connecting hole 32, the positioning of the connecting member 50 during assembly is facilitated.

[0023] Next, the connecting member 50 will be described with reference to FIG. 6. FIG. 6 is a view of the connecting member 50 alone when the connecting member 50 is connected to the lamp house panel 30 and the rear wheel house 10, as viewed from the side outside the vehicle cabin. The connecting member 50 is an oval-shaped plate member composed of short and long sides, and two hooks 53 are formed on one long side, and a rib 54 is formed on the other long side. A connecting hole 51 is formed penetrating one end in the long side direction at approximately the center in the short side direction, and a connecting hole 52 is formed penetrating the other end in the long side direction. The connecting holes 51 and 52 are elliptical shapes that are long in the long side direction. A bead 55 formed in a convex shape is provided between the connecting hole 51 and the connecting hole 52 on the center line connecting the centers of the connecting holes 51 and 52. The bead 55 is provided between the connecting hole 51 and the connecting hole 52, into which the pin member 33 to which an external force is applied is inserted, thereby increasing the strength of the connecting member 50. The two hooks 53 are used for temporary fastening when connecting the connecting member 50 to the lamp house panel 30 and the rear wheel house 10.

[0024] 7 is a side view showing the state in which the connecting member 50 is connected to the lamp house panel 30 and the rear wheel house 10, seen from the vehicle interior side. As shown in FIG. 7, in the state in which the connecting member 50 is connected to the lamp house panel 30 and the rear wheel house 10, the rear suspension holding portion 10f is located on a virtual line passing through the connecting hole 10g provided in the flange joint portion 10e and the connecting hole 32 provided in the bracket 31. The rear suspension holding portion 10f is one of the main input points of torsion of the vehicle body 2, and by positioning the rear suspension holding portion 10f on a virtual line passing through the connecting hole 10g and the connecting hole 32, a structural arrangement is achieved that can efficiently receive a load, and the performance of the vehicle body torsional rigidity is further improved.

[0025] Next, a structure in which the connecting member 50 is connected to the bracket 31 and the flange joint portion 10e will be described with reference to FIG. 8. FIG. 8 is a perspective view of the state in which the connecting member 50 is connected to the bracket 31 and the flange joint portion 10e, as viewed from the front side and the vehicle interior side. The second joint portion 42 of the reinforcing panel 40 is joined to the vehicle interior side surface of the lower panel 45 in an overlapping manner to form an overlapping surface portion 34 in which a part of the lower panel 45 and a part of the reinforcing panel 40 are joined to each other in an overlapping manner. The overlapping surface portion 34 is high in rigidity relative to other parts of the lower panel 45 because the reinforcing panel 40 overlaps the lower panel 45. The bracket 31 has a substantially L-shaped cross section and includes a side portion 35 to which the connecting member 50 is connected and a bottom portion 36 fixed to the lower panel 45. The bottom surface portion 36 is formed by a first bottom surface portion 37 and a second bottom surface portion 38, and the first bottom surface portion 37 and the second bottom surface portion 38 do not form the same plane. That is, the first bottom surface portion 37 and the second bottom surface portion 38 are connected at an angle. The first bottom surface portion 37 is fixed to the overlapping surface portion 34 by spot welding. The second bottom surface portion 38 is fixed to a position (hereinafter referred to as an auxiliary surface portion 39) different from the overlapping surface portion 34 on the vehicle inner surface of the lower panel 45 by spot welding. The first bottom surface portion 37 is fixed to the overlapping surface portion 34, which has high rigidity, by spot welding, thereby improving the rigidity of the fixing portion between the bracket 31 and the lamp house panel 30. This further improves the performance of the torsional rigidity of the vehicle body.

[0026] The surface of the overlapping surface portion 34 to which the first bottom surface portion 37 is fixed and the surface of the auxiliary surface portion 39 to which the second bottom surface portion 38 is fixed are not on the same plane. In FIG. 8, the surface of the overlapping surface portion 34 to which the first bottom surface portion 37 is fixed faces forward, whereas the surface of the auxiliary surface portion 39 to which the second bottom surface portion 38 is fixed faces forward and slightly downward. That is, the direction in which the surface of the overlapping surface portion 34 to which the first bottom surface portion 37 is fixed faces is different from the direction in which the surface of the auxiliary surface portion 39 to which the second bottom surface portion 38 is fixed faces. As a result, the bracket 31 is fixed to surfaces with different angles, so that the rigidity is increased, and the performance of the torsional rigidity of the vehicle body is further improved. In this embodiment, the bottom surface portion 36 of the bracket 31 is fixed to the lamp house panel 30 at the auxiliary surface portion 39, which is a position different from the overlapping surface portion 34 and the overlapping surface portion 34 of the lower panel 45, but it may be fixed at two points on the overlapping surface portion 34. Alternatively, the bottom surface portion 36 of the bracket 31 may be fixed to the lamp house panel 30 at the overlapping surface portion 34 and the auxiliary surface portion 39 that is located at a position different from the overlapping surface portion 34 of the reinforcing panel 40. It is sufficient that at least the bottom surface portion 36 of the bracket 31 is fixed to the overlapping surface portion 34.

[0027] Next, a state in which the connecting member 50 is connected to the bracket 31 and the flange joint 10e will be described with reference to FIG. 9. FIG. 9 is a view showing a state in which the connecting member 50 is connected to the bracket 31 and the flange joint 10e from the rear side. The connecting hole 10g provided in the flange joint 10e for connecting one end of the connecting member 50 and the connecting hole 32 provided in the bracket 31 for connecting the other end of the connecting member 50 are disposed at the same position in the vehicle width direction in the rear view. That is, an imaginary line passing through the connecting hole 10g and the connecting hole 32 extends in the vertical direction. By the imaginary line passing through the connecting hole 10g and the connecting hole 32 extending in the vertical direction, a certain amount of the force is dispersed as rotational energy, and a structure is formed in which the force on the upper and lower sides is released while the movement acting in the vehicle width direction (movement P2 acting in the direction of the white arrow in FIG. 9) and the movement acting in the front-rear direction (movement P1 acting in the direction of the white arrow in FIG. 4) are restricted, and the performance of the torsional rigidity of the vehicle body is further improved.

[0028] As shown in the above embodiment, when the lamp auxiliary receiving portion 21 is 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 is reduced. However, in the vehicle body rear structure 100 of this embodiment, a connecting member 50 is provided to connect the lamp house panel 30 and the rear wheel house 10, thereby suppressing the movement acting in the front-rear direction (movement acting in the direction of the white arrow shown in FIG. 4) and the movement acting in the vehicle width direction (movement acting in the direction of the white arrow shown in FIG. 9), thereby improving the torsional rigidity of the vehicle body 2. In this case, the configuration of the character line 14 is not essential. This is because, even if the character line 14 is not present, when the lamp auxiliary receiving portion 21 is 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 is reduced. In addition, in the present embodiment, 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, but it is not essential that 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. This is because, when the lamp auxiliary receiving portion 21 is provided to connect 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, even if 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 not an acute angle, the torsional rigidity of the vehicle body 2 is reduced. Therefore, even if 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 not an acute angle, the torsional rigidity of the vehicle body 2 is improved by providing the connecting member 50 that connects the lamp house panel 30 and the rear wheel house 10.

[0029] 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]

[0030] 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 10a Inner Wheel House 10b Outer Wheel House 10c First flange part 10d Second flange part 10e Flange joint 10f Rear suspension holder 10g connection hole 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 22 Concave edge 23 Top 24 Hypotenuse 25 Tip 30 Lamp House Panel 31 Bracket 32 Connection hole 33 Pin member 34 Overlapping area 35 Side part 36 Bottom part 37 1st bottom part 38 Second bottom part 39 Auxiliary surface section 40 Reinforcement Panel 41 1st joint 42 Second joint 43 Main body 45 Bottom Panel 50 Connecting member 51 Connection hole 52 Connection hole 53 Hook 54 Ribs 55 Bead 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 rear wheel house covering a rear wheel of the vehicle, the rear wheel house including an inner wheel house having a first flange portion and an outer wheel house having a second flange portion and disposed outward in a vehicle width direction relative to the inner wheel house; a connecting member connecting at least one of the first flange portion and the second flange portion to the lamp house panel; A vehicle rear structure comprising:

2. a flange joint portion where the first flange portion and the second flange portion are joined to each other, The vehicle rear structure according to claim 1 , wherein the connecting member is connected to the flange joint portion.

3. the rear wheel house has a rear suspension holding portion that holds an upper end of a rear suspension, The flange joint portion has a first support portion that supports one end of the connecting member, the lamp house has a second support portion that is supported by the other end portion of the connecting member, 3. The vehicle rear body structure according to claim 2, wherein the rear suspension holding portion is disposed on a virtual line passing through the first support portion and the second support portion.

4. 4. The vehicle rear structure according to claim 3, wherein the connecting member is supported at each of the first support portion and the second support portion so as to be rotatable about an axis extending in a vehicle width direction.

5. the connecting member is connected to the lamp house panel via a bracket provided with the second support portion, the lamp house panel has a lower panel constituting a storage area for the rear lamp, a reinforcing panel joined to the lamp auxiliary receiving portion, and an overlapping surface portion where a part of the lower panel and a part of the reinforcing panel are overlapped and joined, 5. The vehicle rear structure according to claim 1, wherein the bracket is fixed to at least the overlapping surface portion.

6. The bracket is further fixed to a supplementary surface portion different from the overlapping surface portion of at least one of the reinforcing panel and the lower panel, 6. The vehicle rear body structure according to claim 5, wherein a facing direction of the overlapping surface portion is different from a facing direction of the auxiliary surface portion.

7. 4. The vehicle rear structure according to claim 3, wherein the imaginary line extends in a vertical direction in a rear view.

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