JP6102817B2 - Vehicle rear structure - Google Patents

Description

  The present invention relates to a vehicle rear structure.

  The following Patent Document 1 discloses a vehicle rear portion structure. In the vehicle rear structure, a reinforcement is provided that extends in the vehicle vertical direction along the rear pillar inner. An anchor reinforcement is provided across the rear pillar inner and the reinforcement at the front edge portion of the reinforcement, and the anchor reinforcement is joined to the rear pillar inner. A seat belt anchor is attached to the anchor reinforcement.

JP 2012-162216 A

  In the above vehicle rear structure, for example, at the time of a frontal collision, a load from the seat belt to the anchor reinforcement via the seat belt anchor acts on the vehicle front side. The anchor reinforcement is configured to receive most of the load. For this reason, in order to receive the load, measures such as an increase in the thickness of the anchor reinforcement, an increase in area, and a high tensile strength of the material are necessary, and there is room for improvement.

  In view of the above fact, an object of the present invention is to obtain a vehicle rear portion structure that can reduce a load acting on an attachment member to which a seat belt anchor is attached.

The vehicle rear structure according to the first aspect of the present invention includes a roof side panel disposed on the vehicle side portion along the vehicle vertical direction, and joined to the roof side panel from the upper part of the roof side panel to the vehicle rear lower side. A first skeleton member extending to the roof side panel, a second skeleton member having one end joined to the first skeleton member and the other end extending to the lower front side of the vehicle, It is attached to the roof side panel and has a portion that overlaps the first skeleton member and the second skeleton member in a side view of the vehicle , and is joined to the first skeleton member and the second skeleton member at the overlapping portion, and the seat belt anchor is attached. A mounting member.

  In the vehicle rear portion structure according to the first aspect, the roof side panel is provided on the vehicle side portion along the vehicle vertical direction. The first skeleton member and the second skeleton member are joined to the roof side panel. The first skeleton member extends from the upper part of the roof side panel to the lower rear side of the vehicle. One end portion of the second skeleton member is joined to the first skeleton member, and the other end portion of the second skeleton member extends to the lower front side of the vehicle.

Here, an attachment member is attached to the roof side panel. A seat belt anchor is attached to the attachment member. Further, the attachment member is joined to the first skeleton member and the second skeleton member. For this reason, when a load to the vehicle front side acts on the attachment member through the seat belt anchor, the load is distributed from the attachment member to the first skeleton member and the second skeleton member.
Further, since the attachment member is overlapped and joined to the first skeleton member and the second skeleton member, the load acting on the attachment member is transmitted to the first skeleton member and the second skeleton member, starting from this joining location. .

  In the vehicle rear portion structure according to the invention described in claim 2, the end portion on the vehicle front side of the mounting member is joined to the end portion on the vehicle rear side of the second skeleton member in claim 1, and this joining portion Further, the side wall portion of the second skeleton member is disposed on the vehicle front side.

  According to the vehicle rear structure according to the second aspect, since the end of the attachment member on the vehicle front side is joined to the end of the second skeleton member on the vehicle rear side, the attachment member is provided on the vehicle rear side of the second skeleton member. Is disposed. Furthermore, the side wall portion of the second skeleton member is arranged on the vehicle front side from the joint portion between the end portion of the attachment member and the end portion of the second skeleton member. Here, even when a load on the vehicle front side acts on the mounting member and a force for displacing the mounting member toward the vehicle front side is biased, the end of the mounting member abuts against the side wall portion of the second skeleton member. Thus, the force urged by the mounting member is transmitted to and absorbed by the second skeleton member.

According to a third aspect of the present invention, there is provided a vehicle rear portion structure according to the first or second aspect, wherein the vehicle rear portion structure is provided on the attachment member, to which the seat belt anchor is attached, and the attachment portion formed as the positioned portion, and the roof A positioning portion that is provided at a location corresponding to the mounting portion of the side panel and is engaged with the mounting portion.

According to the vehicle rear portion structure of the third aspect , the attachment member is provided with an attachment portion to which the seat belt anchor is attached, and this attachment portion is formed as a positioned portion. On the other hand, the roof side panel is provided with a positioning portion at a location corresponding to the mounting portion. And the attachment part of an attachment member is engaged with the positioning part of a roof side panel.
In the vehicle rear portion structure according to the invention described in claim 4 , in any one of claims 1 to 3 , the one end portion of the second skeleton member is located at an intermediate portion of the first skeleton member in the vehicle vertical direction. It is joined.
Furthermore, the vehicle rear portion structure according to the invention described in claim 5 is joined to the roof side panel on the vehicle front side of the second skeleton member in any one of claims 1 to 4 , and the roof side panel And a third skeleton member joined to the other end of the second skeleton member.

The vehicle rear portion structure according to the invention described in claim 1, claim 4 or claim 5 has an excellent effect that the load acting on the mounting member can be reduced.
Further, in the vehicle rear structure according to the invention described in claim 1, claim 4 or claim 5, the load acting on the mounting member is efficiently distributed to the first skeleton member and the second skeleton member starting from the joint portion. It has an excellent effect of being.

  In the vehicle rear structure according to the second aspect of the present invention, the displacement of the mounting member to the vehicle front side is suppressed, and the displacement of the mounting position of the mounting member is reduced, so that the occupant is restrained by the rear seat belt of the winding device. It has an excellent effect that the performance does not deteriorate.

In the vehicle rear portion structure according to the invention described in claim 3 , since the attachment member is attached to a predetermined position of the roof side panel provided with the positioning portion, the attachment member is attached to the first skeleton member and the second skeleton member. It has an excellent effect that it can be easily joined.

It is the side view which removed the side outer panel of the vehicle side part to which the vehicle rear part structure which concerns on embodiment was applied, and was seen from the vehicle compartment outer side. It is the side view seen from the vehicle interior side of the vehicle side part shown by FIG. It is an enlarged side view of the principal part of the vehicle side part shown by FIG. (A) is sectional drawing which looked at the vehicle side part in the AA cutting line shown by FIG. 3 from the arrow direction, (B) is the arrow direction of the vehicle side part in the BB cutting line shown by FIG. It is sectional drawing seen from. It is a side view corresponding to FIG. 1 of the vehicle side part which shows typically the stress distribution state when the load to the vehicle front side is applied.

[Embodiment]
Hereinafter, a vehicle rear structure according to an embodiment of the present invention will be described with reference to FIGS. Note that an arrow Rr appropriately shown in the drawing indicates the vehicle rear side, and an arrow UP indicates the vehicle upper side. An arrow OUT indicates the outside in the vehicle width direction (outside of the passenger compartment).

(Schematic configuration of vehicle rear structure)
As shown in FIGS. 1 and 2, the vehicle rear portion structure 10 according to the present embodiment is applied to a vehicle side portion 12 of a hatchback type automobile having a back door. Here, FIG. 1 shows a portion of the vehicle side portion 12 on the vehicle rear side as viewed from the vehicle exterior side toward the vehicle interior side in the vehicle width direction with the side outer panel 18 removed. On the other hand, FIG. 2 shows a portion equivalent to the vehicle side portion 12 shown in FIG. 1 as viewed from the vehicle interior side toward the vehicle interior outside in the vehicle width direction. In addition, since the vehicle side part 12 is arrange | positioned in a pair by the vehicle width direction both sides and the structure of the vehicle side part 12 of both sides is the same structure, only one vehicle side part 12 is demonstrated below.

  The vehicle side part 12 shown by FIG.1 and FIG.2 is provided with the roof side panel 14 as a vehicle frame member arrange | positioned along a vehicle up-down direction. The roof side panel 14 is a plate-like roof side inner panel 16 provided on the vehicle interior side along the vehicle vertical direction and the vehicle front-rear direction, and a plate provided on the vehicle exterior side facing the roof side inner panel 16. A side outer panel 18 is provided. An upper portion 14A of the roof side panel 14 is connected to a rear end portion on the vehicle rear side of a roof side rail portion (not shown). A lower portion 14B of the roof side panel 14 is connected to a rear end portion of the rocker on the vehicle rear side (not shown) and a rear wheel house inner panel (quarter wheel house panel) 20. An edge 14 </ b> C on the vehicle front side of the roof side panel 14 is disposed along the rear edge of the rear side door opening 22. An edge 14 </ b> D on the vehicle rear side of the roof side panel 14 is disposed along the side edge of the back door opening 24 on the vehicle width direction side. A rear window opening (rear quarter window opening) 26 is provided in the vehicle vertical direction intermediate portion and the vehicle longitudinal direction intermediate portion of the roof side panel 14.

  As shown in FIGS. 1 to 3, 4 </ b> A and 4 </ b> B, the roof side panel 14 is provided with a first skeleton member 30, a second skeleton member 40, and a third skeleton member 60. Yes. The first skeleton member 30, the second skeleton member 40, and the third skeleton member 60 are configured to increase the rigidity of the vehicle side portion 12.

  More specifically, the first skeleton member 30 is formed as a back door opening side reinforcement, and is configured to increase the rigidity of the vehicle side portion 12 around the back door opening 24. The first frame member 30 is joined to the outer side of the vehicle interior of the roof side inner panel 16. The first skeleton member 30 is provided on the edge portion 14D of the roof side panel 14 along the side edge of the back door opening 24, and the upper portion 14A of the roof side panel 14 on the vehicle rear side of the rear window opening 26. To the lower part 14B side at the rear of the vehicle. The upper part 30A of the first skeleton member 30 is connected to a back door opening upper reinforcement arranged along the vehicle rear end of the roof panel (not shown). The lower part 30B of the first skeleton member 30 is connected to a body lower back panel reinforcement that is not shown.

  The first skeleton member 30 includes an upper surface portion 32, side wall portions 34A and 34B, and flange portions 36A and 36B, and the first skeleton member 30 has a hat shape in which a cross-sectional shape of the first skeleton member 30 protrudes to the outside of the passenger compartment. The upper surface portion 32 of the first skeleton member 30 has a plate shape facing the roof side inner panel 16 and extends along the edge of the back door opening 24. The side wall portions 34A and 34B are formed by bending both end portions of the upper surface portion 32 in the vehicle front-rear direction toward the roof side inner panel 16 side. The flange portions 36 </ b> A and 36 </ b> B are formed by bending the front end portions of the side wall portions 34 </ b> A and 34 </ b> B outward along the roof side inner panel 16. As shown in FIG. 3, the first skeleton member 30 is joined to the roof side inner panel 16 at the flange portions 36A and 36B. For example, spot welding is used as a joining means for joining, and the joining portion is indicated by a mark “x” in FIG. The joining means is not limited to spot welding, and laser screw welding (LSW), screw fastening, or the like can be used. Further, by joining the first frame member 30 to the roof side inner panel 16, the first frame member 30 and the roof side inner panel 16 are closed as shown in FIG. 4 (A) and FIG. 4 (B). Is forming.

  As shown in FIGS. 1 to 3, the second frame member 40 is joined to the outside of the vehicle interior of the roof side inner panel 16 in the same manner as the first frame member 30. An upper portion 40A (44A) that is one end portion of the second skeleton member 40 is joined to an intermediate portion of the first skeleton member 30 in the vehicle vertical direction. The intermediate portion 40C of the second skeleton member 40 extends obliquely toward the vehicle front lower side on the lower side of the rear window opening 26. The lower part 40B (42B) which is the other end part of the second skeleton member 40 is joined to the lower part 60B of the third skeleton member 60 and the rear wheel house inner panel 20, as shown in FIG. The second skeleton member 40 is configured to disperse the force mainly input from the rear suspension tower to the first skeleton member 30 and the third skeleton member 60 and to increase the rigidity of the vehicle side portion 12.

  The second skeleton member 40 includes a main skeleton member main body 42 provided on the rear wheel house inner panel 20 side, and a skeleton member connecting portion 44 provided on the first skeleton member 30 side. The main skeleton member main body 42 includes an upper surface portion 46, side wall portions 48A and 48B, and flange portions 50A and 50B. The main skeleton member main body 42 has a hat shape in which a cross-sectional shape of the main skeleton member main body 42 protrudes to the outside of the passenger compartment. The upper surface portion 46 of the main skeleton member body 42 has a plate shape facing the roof side inner panel 16 and extends in an oblique direction. The side wall portions 48A and 48B are formed by bending both end portions of the upper surface portion 46 in the vehicle front-rear direction to the roof side inner panel 16 side. The flange portions 50 </ b> A and 50 </ b> B are formed by bending the front end portions of the side wall portions 48 </ b> A and 48 </ b> B outward along the roof side inner panel 16. As shown in FIG. 3, the main skeleton member main body 42 is joined to the roof side inner panel 16 at the flange portions 50A and 50B. Further, the lower part 42B of the main skeleton member main body 42 (the lower part 40B of the second skeleton member 40) is joined to the lower part 60B of the third skeleton member 60. The above-mentioned joining means is used for joining, and the joining part is shown with a symbol W2 in FIG. The main frame member main body 42 forms a closed space together with the roof side inner panel 16, similarly to the first frame member 30.

  On the other hand, the upper portion 44 </ b> A (the upper portion 40 </ b> A of the second skeleton member 40) of the skeleton member connecting portion 44 is joined to the first skeleton member 30. The joint location is shown with a symbol W3 in FIG. The lower part 44B of the skeleton member connecting portion 44 is joined to the upper part 42A of the main skeleton member main body 42. The joint location is shown in FIG. The skeleton member connecting portion 44 includes an upper surface portion 52, side wall portions 54A and 54B, and flange portions 56A and 56B. The cross-sectional shape of the skeleton member connecting portion 44 is a hat shape that protrudes to the outside of the passenger compartment. The upper surface portion 52 of the skeleton member connecting portion 44 has a plate shape facing the roof side inner panel 16, and the upper portion 44 </ b> A overlaps the upper surface portion 32 of the first skeleton member 30. The side wall portions 54A and 54B are formed by bending both end portions of the upper surface portion 52 in the vehicle front-rear direction toward the roof side inner panel 16 side. Here, the side wall portion 54B of the skeleton member connecting portion 44 has a height that protrudes outward from the vehicle compartment with respect to the roof side inner panel 16 at a thickness greater than the plate thickness of the mounting member 70 described later. It acts as a “wall” that blocks the movement to the side. The flange portions 56 </ b> A and 56 </ b> B are formed by bending the bent tip portions of the side wall portions 54 </ b> A and 54 </ b> B outward along the roof side inner panel 16. As shown in FIG. 3, the skeleton member connecting portion 44 is joined to the roof side inner panel 16 at the flange portions 56A and 56B. The joint location is shown in FIG. Similarly to the first skeleton member 30, the skeleton member connecting portion 44 forms a closed space together with the roof side inner panel 16. In addition, in the joining location W2-W4, joining by the said joining means is performed.

  As shown in FIGS. 1 and 2, the third skeleton member 60 is joined to the outside of the passenger compartment of the roof side inner panel 16. The upper portion 60A of the third skeleton member 60 is joined to the vehicle front side of the upper portion 14A of the roof side panel 14. The middle portion 60C of the third skeleton member 60 extends along the edge portion 14C of the roof side panel 14 on the vehicle front side of the rear window opening 26. The lower portion 60B of the third skeleton member 60 is joined to the rear wheel house inner panel 20 and is joined to the lower portion 40B of the second skeleton member 40 as described above. Although not shown, the third skeleton member 60 has a hat-shaped cross section, similar to the first skeleton member 30, and the rigidity of the vehicle side portion 12 around the vehicle rear end side of the rear side door opening 22. It is set as the structure which raises.

(Configuration of mounting member)
As shown in FIGS. 1 to 3, 4 </ b> A, and 4 </ b> B, an attachment member 70 is attached to the outside of the passenger compartment in the roof side inner panel 16 of the roof side panel 14. The attachment member 70 is configured as a seat belt anchor bracket, and the seat belt anchor 82 shown in FIG. 2 is attached thereto.

  More specifically, the attachment member 70 is disposed on the vehicle lower side of the first skeleton member 30 and the vehicle rear side of the second skeleton member 40 at the joining position of the first skeleton member 30 and the second skeleton member 40. ing. In the present embodiment, the attachment member 70 is formed of a rectangular plate whose longitudinal direction coincides with the extending direction of the first skeleton member 30 and whose short direction coincides with the extending direction of the second skeleton member 40. Has been. As the plate material, for example, a high-strength steel material is used. Note that the shape of the attachment member 70 may be a square shape, a rectangular shape such as a rectangular shape in which the longitudinal direction coincides with the extending direction of the second skeleton member 40, or a polygonal shape with corners cut. May be. Further, as the plate material, steel materials other than high-tensile steel materials, metal plate materials, and alloy plate materials can be used.

  As shown in FIGS. 2, 3, and 4 (A), a substantially rectangular attachment portion 72 that protrudes toward the vehicle interior and forms an attachment seat is provided at the center of the attachment member 70. A seat belt anchor 82 is attached to the attachment portion 72, and the attachment portion 72 is formed as a positioned portion when the attachment member 70 is attached to the roof side inner panel 16. Here, the attaching portion 72 is formed slightly longer along the extending direction of the first skeleton member 30 with respect to the extending direction of the second skeleton member 40, and is attached to the roof side inner panel 16 at the time of positioning. The member 70 is configured to prevent rotation. In a portion corresponding to the mounting portion 72, the roof side inner panel 16 is provided with a positioning portion 16D having a shape substantially the same as that of the mounting portion 72 and recessed in the vehicle interior side. A flange portion 74 provided along the roof side inner panel 16 is provided around the attachment portion 72 of the attachment member 70. As shown in FIGS. 1 to 3, in the present embodiment, the attachment member 70 is formed by two fastening members 76 </ b> A and 76 </ b> B arranged in the attachment portion 72 along the extending direction of the first skeleton member 30. The roof side inner panel 16 is attached. For example, bolts and nuts are used as the fastening members 76A and 76B. Bolts are passed through through holes provided in the roof side inner panel 16 and the mounting portion 72 (not shown) from the vehicle interior side toward the vehicle interior outside, and are fastened by nuts on the vehicle exterior side. The number of fastening members may be three or more. For example, in the case of three fastening members, each fastening member may be provided at the apex of the triangle.

  Here, the joining location and joining structure of the attachment member 70 will be described in detail. As shown in FIG. 3, the flange portion 74 of the attachment member 70 is joined to the roof side inner panel 16, the first skeleton member 30, and the second skeleton member 40 at five joint locations W51 to W55. The joint portion W51 is set on the vehicle lower side of the end portion 74A on the front side of the vehicle in the flange portion 74 of the mounting member 70, and the end portion 74A is connected to the flange portion 56B of the second skeleton member 40 and the roof side inner panel 16 in the joint portion W51. It is joined to. That is, the joining is three sheets. The joint portion W52 is set on the vehicle upper side of the end portion 74A, and as shown in FIGS. 3 and 4A, the end portion 74A is the flange portion 56B of the second skeleton member 40 and the first skeleton at the joint portion W52. It is joined to the flange portion 36 </ b> A of the member 30. Again, although the three sheets are joined, the end 74A is not joined to the roof side inner panel 16 at the joint location W52. The joint portion W53 is set at the intermediate portion in the vehicle longitudinal direction of the end portion 74B on the upper side of the vehicle in the flange portion 74 of the mounting member 70, and the end portion 74B is connected to the flange portion 36B of the first skeleton member 30 and the roof side at the joint portion W53. It is joined to the inner panel 16. Similarly, the joining is three sheets. The joint portion W54 is set on the vehicle upper side of the end portion 74C on the vehicle rear side in the flange portion 74 of the mounting member 70, and the end portion 74C is connected to the flange portion 36B of the first skeleton member 30 and the roof side inner panel 16 in the joint portion W54. It is joined to. Here, similarly, the joining is three-layered. The joining portion W55 is set on the vehicle lower side of the end portion 74C, and the end portion 74C is joined to the roof side inner panel 16 at the joining portion W55. The joining here is two-layered. In the joining locations W51 to W55, the joining means is used for joining. Note that the number of joints is not limited to the present embodiment.

  As shown in FIG. 2, on the vehicle interior side of the roof side inner panel 16, a winding device 80 is attached to the attachment portion 72 of the attachment member 70 via a seat belt anchor 82 as a connection portion. More specifically, the end portion 82A on the vehicle rear side of the seat belt anchor 82 is attached to the attachment portion 72 of the attachment member 70 by fastening members 76A and 76B. A winding device 80 is attached to an end portion 82B of the seat belt anchor 82 on the vehicle front side via a fastening member 82C. The winding device 80 is configured to wind the rear seat belt 88. The winding device 80 side of the rear seat belt 88 is supported by a bezel portion 84, and the bezel portion 84 is attached to the roof side inner panel 16 by a fastening member 86. As shown in FIGS. 1 to 3, a temporary fastening claw 82 </ b> D is provided at the lower end of the end portion 82 </ b> A of the seat belt anchor 82. The temporarily fixing claw 82D is configured to be protruded to the vehicle outer side and the protruding tip portion is bent to the vehicle lower side. The temporarily fixing claw 82 </ b> D is configured to be engaged with a temporarily fixing hole 78 that penetrates the attachment portion 72. By engaging the temporarily fixing claw 82D with the temporary fixing hole 78, the attaching operation of the seat belt anchor 82 to the attaching portion 72 can be easily performed.

(Operation and effect of the present embodiment)
In the vehicle rear structure 10 according to the present embodiment, as shown in FIGS. 1 to 3, 4 </ b> A, and 4 </ b> B, the attachment member 70 is provided on the roof side inner panel 16 of the roof side panel 14. Mounted. As shown in FIG. 2, a seat belt anchor 82 is attached to the attachment member 70. Further, the attachment member 70 is joined to the first skeleton member 30 and the second skeleton member 40 as shown in FIGS.

  Here, if a frontal collision occurs, as shown in FIG. 5 through the rear seat belt 88, the winding device 80, and the seat belt anchor 82 shown in FIG. A load (collision load) F to the front side of the vehicle acts on the mounting member 70. The extension direction of the first skeleton member 30 is 90 degrees that is greater than 0 degree that coincides with the action direction of the load F and that is orthogonal to the action direction of the load F when the clockwise direction in FIG. The diagonal direction is smaller than that. In addition, the extending direction of the second skeleton member 40 is an oblique direction that is smaller than 0 degrees that coincides with the direction of action of the load F and that is greater than −90 degrees that is perpendicular to the direction of action of the load F. For this reason, the load F acting on the mounting member 70 is transmitted from the mounting member 70 to the first skeleton member 30 as a component load F1 along the extending direction, and to the second skeleton member 40 in the extending direction. It is transmitted as a component load F2 along. The load F is distributed from the attachment member 70 to the first skeleton member 30 and the second skeleton member 40.

  In FIG. 5, here, the load F is applied in four steps from the most stressed region T1 painted with the darkest color to the least stressed region T4 painted with the lightest color. The stress distribution state is shown. As is clear from FIG. 5, a large stress is generated in the attachment member 70 and its surrounding portions, and the stress is distributed along the extending direction of the first skeleton member 30 and the second skeleton member 40.

  Therefore, according to the vehicle rear portion structure 10 according to the present embodiment, the load F acting on the mounting member 70 can be reduced. Moreover, since the load F can be reduced, the area (size) of the attachment member 70 can be reduced in a vehicle side view. Moreover, the plate | board thickness of the attachment member 70 can be made thin. For this reason, size reduction of the attachment member 70 is realizable. Furthermore, if the downsizing is realized, the attachment member 70 can be reduced in weight. Even if the upper part 40A of the second skeleton member 40 is joined to the upper part 30A or the lower part 30B of the first skeleton member 30 instead of the intermediate part in the vertical direction of the first skeleton member 30, the same effect is obtained. be able to.

Further, in the vehicle rear portion structure 10 according to the present embodiment, as shown in FIG. 3 in particular, a flange that is an end portion 74A on the vehicle front side of the attachment member 70 and an end portion on the vehicle rear side of the second skeleton member 40 is provided. parts 56B and are joined by joints W51, W52. That is, the attachment member 70 is disposed on the vehicle rear side of the second skeleton member 40. And the side wall part 54B of the 2nd frame member 40 is arrange | positioned rather than the joining location W51 and W52 at the vehicle forward side. Here, even if the load F to the front side of the vehicle acts on the mounting member 70 and the force for displacing the mounting member 70 to the front side of the vehicle is urged, the end portion 74A of the mounting member 70 remains on the second skeleton member 40. By abutting against the side wall portion 54B, the force urged by the attachment member 70 is transmitted to the second skeleton member 40 and absorbed.

  Therefore, according to the vehicle rear portion structure 10 according to the present embodiment, the displacement of the mounting position of the mounting member 70 is reduced, so that the occupant restraining performance by the rear seat belt 88 of the winding device 80 does not deteriorate.

  Furthermore, in the vehicle rear structure 10 according to the present embodiment, as shown in FIGS. 3, 4 (A) and 4 (B), the flange portion 74 of the mounting member 70 is the flange portion of the first skeleton member 30. 36A and the flange portion 56B of the second skeleton member 40 are overlapped and joined at the joint location W52. Therefore, the load F acting on the attachment member 70 is transmitted to the first skeleton member 30 and the second skeleton member 40 as shown in FIG.

  Therefore, the vehicle rear structure 10 according to the present embodiment can efficiently disperse the load F acting on the attachment member 70 from the attachment member 70 to the first skeleton member 30 and the second skeleton member 40.

  Further, in the vehicle rear portion structure 10 according to the present embodiment, as shown in FIGS. 1 to 3 and 4A, the attachment portion 72 of the attachment member 70 is formed as a positioned portion, and the roof side. A positioning portion 16D is provided at a portion corresponding to the mounting portion 72 of the inner panel 16. Then, the attachment portion 72 is engaged (positioned) with the positioning portion 16 </ b> D, and the attachment member 70 is attached to the roof side inner panel 16.

  Therefore, according to the vehicle rear portion structure 10 according to the present embodiment, the attachment member 70 is attached to a predetermined portion of the roof side inner panel 16 provided with the positioning portion 16D. 30 and the second skeleton member 40 can be easily joined.

[Supplementary explanation of the above embodiment]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, in the present invention, the end of the attachment member on the vehicle upper side is joined to the end of the first skeleton member on the vehicle lower side, and the end of the attachment member on the vehicle rear side is the vehicle front of the second skeleton member. You may join to the edge part of the side. That is, the attachment member may be provided on the vehicle front side with respect to the second skeleton member. In the present invention, the attachment member may have a triangular shape in a side view of the vehicle.

DESCRIPTION OF SYMBOLS 10 Vehicle rear part structure 12 Vehicle side part 14 Roof side panel 16 Roof side inner panel 16D Positioning part 18 Side outer panel 22 Rear side door opening 24 Back door opening 30 1st frame member 40 2nd frame member 54A, 54B Side wall part 60 Third frame member 70 Mounting member 72 Mounting portion (positioned portion)
74 Flange portion 76A, 76B Fastening member 80 Winding device 82 Seat belt anchor 88 Rear seat belt W1-W4, W51-W55

Claims (5)

A roof side panel arranged along the vehicle vertical direction on the side of the vehicle;
A first skeleton member joined to the roof side panel and extending from the upper part of the roof side panel to the vehicle rear lower side;
A second skeleton member joined to the roof side panel, with one end joined to the first skeleton member, and the other end extended to the vehicle lower front side;
It is attached to the roof side panel and has a portion that overlaps the first skeleton member and the second skeleton member in a side view of the vehicle , and is joined to the first skeleton member and the second skeleton member at the overlapping portion , An attachment member to which a seat belt anchor is attached;
A vehicle rear structure comprising:   An end of the attachment member on the vehicle front side is joined to an end of the second skeleton member on the vehicle rear side, and a side wall portion of the second skeleton member is disposed on the vehicle front side of the joining portion. The vehicle rear structure according to claim 1. Provided on the attachment member, the seat belt anchor is attached, and an attachment portion formed as a positioned portion;
A positioning portion provided at a location corresponding to the mounting portion of the roof side panel and engaged with the mounting portion;
The vehicle rear part structure according to claim 1 or 2 , comprising: The vehicle rear portion structure according to any one of claims 1 to 3, wherein the one end portion of the second skeleton member is joined to an intermediate portion of the first skeleton member in a vehicle vertical direction . Joined to the roof side panel on the vehicle front side of the second skeleton member, extended from the upper part of the roof side panel to the vehicle rear lower side, and joined to the other end of the second skeleton member The vehicle rear portion structure according to any one of claims 1 to 4, further comprising a third skeleton member .