JP2012144102A - Upper back structure of vehicle - Google Patents

Abstract

An upper back structure for a vehicle that can simplify the structure and reduce the weight while ensuring rigidity near a roof side inner.
An upper back panel (15) is installed between a pair of roof side inners (13), a lateral reinforcing portion (17) extending in the vehicle width direction is provided on the front end side of the upper back panel (15), and both end sides thereof are end reinforcing portions. 19 is an upper back structure provided with a through-opening that penetrates in the vehicle front-rear direction, and the lateral reinforcement portion 17 bends the upper back panel 15 a plurality of times in opposite directions and extends in the vehicle width direction. The wall portions 29a to 29c are formed and disposed on the side of the through opening 23 from the top horizontal wall portion 25 of the upper back panel 15, and the end reinforcing portions 31a to 31c correspond to the plurality of horizontal wall portions 29a to 29c. A plurality of end wall portions 31a to 31c bent as described above were provided, and the lateral wall portions 29a to 29c and the end wall portions 31a to 31c were joined to each other at the wall surfaces.
[Selection] Figure 4

Description

  The present invention relates to an upper back structure of a vehicle disposed between a passenger compartment and a luggage compartment in a sedan type vehicle.

  A so-called trunk-through type vehicle is known in which a vehicle compartment and a cargo compartment are communicated by a through opening without partitioning with a partition panel (see, for example, Patent Document 1).

  Such a vehicle 10 includes a vehicle upper back structure 41 as shown in FIGS. In this structure, the upper back panel 45 is installed between the pair of roof side inners 13, and the upper back member 43 extending in the vehicle width direction is joined to the lower surface along the front end of the upper back panel 45. The upper back member 43 is formed with a length corresponding to the entire length between the pair of roof side inners 13, and both end portions are directly joined to the respective roof side inners 13.

A package bracket 47 is joined between the upper back panel 45 and each roof side inner 13, and the pair of roof side inners 13 are connected by the upper back panel 45 and the package bracket 47.
A strainer 48 is joined to each roof side inner 13 at a position above the wheel house 35, and both ends of the upper back member 43 in the vehicle width direction are joined to the upper end of the strainer 48.

A through opening 23 is formed between the upper back member 43, the strainer 48 and the floor cross member 21 so as to penetrate in the vehicle front-rear direction.
When the through-opening 23 is provided, when stress is applied from the side of the vehicle body, as shown in FIG. 7, in the vicinity of the position where the upper back panel 45 and the roof side inner 13 are connected, one side in the vehicle width direction is provided. The angle θ1 increases and the deformation in the distortion direction is likely to occur such that the angle θ2 on the other side decreases. Further, when receiving a stress in the longitudinal direction of the vehicle body, it tends to be deformed so as to tilt in the longitudinal direction of the vehicle. Therefore, in the upper back structure 41, it is necessary to ensure sufficient rigidity in the vicinity of the roof side inner 13.

  In the upper back structure 41, as shown in FIGS. 8 to 10, the upper back member 43 includes a first horizontal wall portion 49a to a third horizontal wall portion 49c extending in the vehicle width direction. The first horizontal wall portion 49a and the third horizontal wall portion 49c have wall surfaces extending in the vehicle width direction and the vehicle height direction, and the second horizontal wall portion 49b has wall surfaces extending in the vehicle front-rear direction and the vehicle width direction. . The first horizontal wall portion 49a and the third horizontal wall portion 49c are bent in the same direction with respect to the second horizontal wall portion 49b and have a substantially U-shaped cross-section. The upper back panel 45 is spot welded to the first horizontal wall portion 49a and the third horizontal wall portion 49c.

  The strainer 48 has first end wall portions 51a to third end wall portions 51c corresponding to the first horizontal wall portions 49a to the third horizontal wall portions 49c. The first end wall portion 51a and the third end wall portion 51c have wall surfaces extending in the vehicle height direction and the vehicle width direction, and the second end wall portion 51b extends in the vehicle front-rear direction and curved in the vehicle height direction. Have In the strainer 48, the first end wall portion 51a and the third end wall portion 51c are bent in the same direction with respect to the second end wall portion 51b, and the cross-sectional shape is substantially U-shaped. Yes.

  The first end wall portion 51a to the third end wall portion 51c are spot welded to the roof side inner 13 and the wheel house 35, respectively, and the first horizontal wall portion 49a and the third horizontal wall portion of the upper back member 43 are arranged on the upper end side. The wall portion 49c is spot welded. The second lateral wall portion 49b of the upper back member 43 is spot-welded to the second end wall portion 51b on the upper end side.

  In the vicinity of each roof side inner 13 of such an upper back structure 41, the second end wall portion 51b of the strainer 48 and the second lateral wall portion 49b of the upper back member 43 support the stress in the vehicle front-rear direction. It becomes. The first horizontal wall portion 49a and the third horizontal wall portion 49c of the strainer 48 and the first horizontal wall portion 49a and the third horizontal wall portion 49c of the upper back member 43 support the stress in the vehicle width direction. It becomes a share side.

JP 2006-168434 A

  In such an upper back structure 41 of the vehicle, a large number of wall portions are arranged in the vicinity of each roof side inner 13 and joined to each other to ensure vehicle body rigidity. For this reason, the upper back structure 41 is complicated, has a large number of parts, and is heavier, requiring labor for manufacturing and increasing costs.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an upper back structure for a vehicle that can simplify the configuration while ensuring rigidity in the vicinity of the roof side inner, and can reduce the weight.

  In the upper back structure of the vehicle of the present invention that achieves the above object, an upper back panel is installed between a pair of roof side inners, and a lateral reinforcing portion that extends in the vehicle width direction is provided on the front end side of the upper back panel. Both end sides of the installation reinforcement are joined to the end reinforcement, each end reinforcement is joined to the roof side inner, and penetrates between the lateral reinforcement, the end reinforcement and the floor cross member in the vehicle longitudinal direction. In the upper back structure provided with the through-opening, the horizontal reinforcement portion includes a plurality of horizontal wall portions extending in the vehicle width direction, and the plurality of horizontal wall portions include a plurality of horizontal wall portions extending along the vehicle width direction. It is formed by bending multiple times in opposite directions at the bent part, and is arranged on the through opening side from the top horizontal wall part of the upper back panel, and the end reinforcing part corresponds to the plurality of horizontal wall parts. Comprising a plurality of end wall portion which is bent to a plurality of transverse 設壁 portion and a plurality of end wall portion is characterized in that it is joined by the wall surfaces.

  The plurality of horizontal wall portions include a first horizontal wall portion on the top horizontal wall portion side, a third horizontal wall portion spaced apart from the top horizontal wall portion, and a space between the first horizontal wall portion and the third horizontal wall portion. And the first horizontal wall portion and the third horizontal wall portion are formed to be bent so as to be opposite to the second horizontal wall portion. The plurality of end wall portions may include a first end wall portion to a third end wall portion corresponding to the first horizontal wall portion to the third horizontal wall portion.

It is preferable that the second lateral wall portion has a wall surface extending in the vehicle longitudinal direction and the vehicle width direction, and the second end wall portion has a wall surface curved in the vehicle height direction.
The second lateral wall portion may be disposed apart from the roof side inner and joined to the second end wall portion.
Preferably, the roof side inner and the upper back panel are connected via a package bracket, and the package bracket is joined to the wall surfaces of the top horizontal wall portion, the first horizontal wall portion, and the first end wall portion.
The roof side inner and the upper back panel may be connected via a package bracket, and the package bracket may be joined to the first reinforcing wall portion of the end portion reinforcing portion.
It is preferable that a wheel house is provided at the lower ends of the pair of roof side inners, and each end reinforcing portion is joined to the wheel house.

According to the vehicle upper back structure of the present invention, a plurality of lateral wall portions of the lateral reinforcement portion are formed by bending the upper back panel a plurality of times in opposite directions at a plurality of bent portions along the vehicle width direction. The plurality of end wall portions of the end reinforcing portion are bent and joined so as to correspond to these lateral wall portions. Therefore, the rigidity with respect to stress is securable in several directions by arrange | positioning each horizontal wall part and an edge part wall part in several directions.
In addition, since the number and size of the lateral wall portions and the end wall portions can be easily adjusted within a range in which rigidity can be ensured, these can be suppressed to be small, and the weight can be reduced.

Since the horizontal reinforcement part is formed by bending the front end side of the upper back panel, it is not necessary to form and join the horizontal reinforcement part as a separate member, reducing the number of parts and simplifying the configuration it can. Since the horizontal wall portion is disposed closer to the through-opening side than the top horizontal wall portion of the upper back panel, each horizontal wall portion and each end wall portion can be reduced in the vicinity of the roof side inner, and the weight can be reduced. .
Therefore, according to the present invention, it is possible to provide a vehicle upper back structure that can simplify the configuration while ensuring rigidity in the vicinity of the roof side inner, and can reduce the weight.

1 is a schematic side view of a vehicle provided with an upper back structure for a vehicle according to the present invention. It is CC schematic sectional drawing of FIG. 1 which shows the upper back structure of the vehicle which concerns on this invention. FIG. 3 is a partially enlarged perspective view of a corner portion in the vehicle upper back structure according to the present invention. It is a partial exploded perspective view of a corner part in the upper back structure of vehicles concerning the present invention. (A) is the AA end elevation of FIG. 3 in the upper back structure of the vehicle which concerns on this invention, (b) is the BB end elevation of FIG. It is a schematic side view of the vehicle provided with the upper back structure of the vehicle which concerns on a prior art. It is FF schematic sectional drawing of FIG. 6 which shows the upper back structure of the vehicle which concerns on a prior art. It is a partial expansion perspective view of the corner part in the upper back structure of the vehicle concerning a prior art. It is a partial disassembled perspective view of the corner part in the upper back structure of the vehicle which concerns on a prior art. (A) is the DD end elevation of FIG. 8 in the upper back structure of the vehicle based on a prior art, (b) is the EE end elevation of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 5. In each of the drawings, Up represents the upper side in the vehicle height direction, Fr represents the front in the vehicle front-rear direction, Rr represents the rear, Rh represents the right side in the vehicle width direction, and Lh represents the left side.

This embodiment is an example in which a vehicle upper back structure 11 according to the present invention is applied to a sedan type vehicle 10 as shown in FIGS.
In the upper back structure 11, as shown in FIGS. 2 to 5, an upper back panel 15 is installed between the pair of roof side inners 13, and a lateral reinforcement portion 17 extending in the vehicle width direction on the front end side of the upper back panel 15. Is provided. Both end sides of the lateral reinforcement 17 are joined to strainers 19 as end reinforcements, and each strainer 19 is joined to the roof side inner 13.
A through-opening 23 that penetrates in the vehicle front-rear direction is formed between the lateral reinforcing portion 17, the strainer 19, and the floor cross member 21. In the case of the so-called trunk-through type vehicle 10, the through-opening 23 is used as an opening that connects the vehicle compartment and the cargo compartment.

  The upper back panel 15 is formed of a sheet metal structure, and is a top horizontal wall portion 25 arranged in a substantially horizontal direction on the vehicle upper side in the mounted state. On the vehicle front side of the upper back panel 15, a lateral reinforcement portion 17 having a bent structure is formed along the front end along the entire length of the upper back panel 15. The top horizontal wall portion 25 and the horizontal reinforcing portion 17 are formed shorter than between the pair of roof side inners 13.

  The horizontal reinforcing portion 17 includes a first horizontal wall portion extending in the vehicle width direction by bending the upper back panel 15 a plurality of times at a plurality of bent portions 27a, 27b, and 27c provided substantially parallel to each other in the longitudinal direction. 29a, the 2nd horizontal wall part 29b, and the 3rd horizontal wall part 29c are provided in order from the top horizontal wall part 25 side. The first horizontal wall portion 29a and the third horizontal wall portion 29c have wall surfaces extending in the vehicle width direction and the vehicle height direction, and the second horizontal wall portion 29b has wall surfaces extending in the vehicle front-rear direction and the vehicle width direction. . In this embodiment, all the lateral wall portions 29 a to 29 c are arranged closer to the through opening 23 than the top lateral wall portion 25 of the upper back panel 15.

  The bent portions 27a, 27b, and 27c are bent in opposite directions, in this case, alternately in opposite directions. The first horizontal wall portion 29a on the side of the top horizontal wall portion 25 and the third horizontal wall portion 29c on the side separated from the top horizontal wall portion 25 are the first horizontal wall portion 29a and the third horizontal wall portion 29c. It bends in the opposite direction with respect to the 2nd horizontal wall part 29b arrange | positioned between. The end face shape cut in the direction intersecting with the bent portions 27a, 27b, 27c of the lateral reinforcing portion 17 is a crank shape.

  When the horizontal reinforcing portion 17 is formed in such a shape, the first horizontal wall portion 29a to the third horizontal wall portion 29c having different orientation directions can be disposed adjacent to each other via the bent portions 27a to 27c, and stresses in different directions can be obtained. Can be carried by the horizontal wall portions 29a to 29c, respectively, and the rigidity of the entire horizontal reinforcing portion 17 can be improved.

  Although not particularly limited, the second horizontal wall is formed with the first horizontal wall portion 29a inclined at 0 ° to ± 5 ° with respect to the vertical direction with the upper back panel 15 mounted on the vehicle 10. The portion 29b may be inclined at 0 ° to ± 5 ° with respect to the horizontal direction, and the third lateral wall portion 29c may be inclined at 0 ° to ± 25 ° with respect to the vertical direction.

The strainer 19 as the end portion reinforcing portion is formed of a sheet metal structure, and is bent a plurality of times so as to correspond to the horizontal wall portions 29a to 29c of the horizontal reinforcing portion 17, so that the first end in order from the vehicle rear side. The part wall part 31a, the second end part wall part 31b, and the third end part wall part 31c are provided adjacent to each other through the bent parts 33b and 33c.
The first end wall portion 31a and the third end wall portion 31c have wall surfaces that extend in the vehicle height direction and the vehicle width direction. The second end wall portion 31b is curved in an arc shape in the vehicle height direction so as to change from the lower wall surface extending in the vehicle longitudinal direction and the vehicle height direction to the upper wall surface extending in the vehicle longitudinal direction and the vehicle width direction. It has a curved wall surface. The first end wall portion 31 a is provided in the entire width between the second end wall portion 31 b and the roof side inner 13 or the wheel house 35. The third end wall portion 31c is provided inside the second end wall portion 31b.
The bent portions 33b and 33c have an arcuate curved shape corresponding to the second end wall portion 31b.

  In the strainer 19, the first end wall portion 31a and the third end wall portion 31c are provided in the reverse direction with respect to the second end wall portion 31b, and the bent portions 33b and 33c are alternately bent in the reverse direction. is doing. The end surface shape in the direction intersecting with the bent portions 33b and 33c of the strainer 19 is a crank shape. The bending angles of the bent portions 33b and 33c are substantially the same as the bent angles of the bent portions 27b and 27c of the lateral reinforcement portion 17. The distance between the bent portions 33 b and 33 c, that is, the width of the second end wall portion 31 b is substantially the same as the width of the second horizontal wall portion 29 b of the horizontal reinforcing portion 17. As a result, the end wall portions 31 a to 31 c of the strainer 19 can be easily joined to the horizontal wall portions 29 a to 29 c of the horizontal reinforcement portion 17.

  The first end wall portion 31 a of the strainer 19 is provided with a joint portion 32 a for the roof side inner 13. It is not necessary to provide a joint portion for the roof side inner 13 in the third end wall portion 31c.

In the upper back structure 11, the upper back panel 15 and the strainer 19 are joined, the strainer 19 and the roof side inner 13 are joined, and the package bracket 37 is disposed between the upper back panel 15 and the roof side inner 13. Are joined together with the strainer 19. The roof side inner 13 and the upper back panel 15 are connected via a package bracket 37.
Although the joining method is not limited, it is joined by spot welding. In each figure, X indicates a part of the welding point. The welding point can be set as appropriate.

The strainer 19 and the lateral reinforcement portion 17 are joined by joining the plurality of end wall portions 31a to 31c and the plurality of lateral wall portions 29a to 29c.
The wall surface of the first horizontal wall portion 29a and the wall surface of the first end wall portion 31a, the wall surface on the bottom surface side of the second horizontal wall portion 29b, the wall surface on the upper end side of the second end wall portion 31b, and a third horizontal wall The wall surface of the wall part 29c and the wall surface of the 3rd end part wall part 31c are joined in the state which faced each other and contact | abutted.

  Here, the horizontal wall portions 29a to 29c of the horizontal reinforcing portion 17 extend in a planar shape without being greatly curved. On the other hand, the second end wall portion 31b of the strainer 19 is greatly curved, the first end wall portion 31a is outside the second end wall portion 31b, and the third end wall portion 31c is the second end wall portion. It extends in a planar shape inside the 31b without being greatly curved. And the upper end of the 2nd end part wall part 31b is inserted in the center side which became deeper than the edge part by the side of the roof side inner 13 of the horizontal installation part 17. As shown in FIG.

  Therefore, the first end wall portion 29a and the first end wall portion 31a are joined, and the third end wall portion 29c and the third end portion wall portion 31c are joined, and the second end Since the part wall part 31b contacts and is joined to the second lateral wall part 29b on the upper end side, they are separated from each other on the lower side, and a hollow closed cross-sectional shape is formed. As a result, an obliquely inclined three-dimensional structure is formed at a portion where the horizontal reinforcing portion 17 and the strainer 19 overlap, and the strength is ensured.

  In this joined state, the roof side inner 13 and the horizontal reinforcing portion 17 are arranged at a distance from each other, and the second horizontal wall portion 29b and the third horizontal wall portion 29c are separated from the roof side inner 13. At the position, the second end wall portion 31b and the third end wall portion 31c are joined.

  The strainer 19 and the roof side inner 13 are joined by joining the side of the first end wall 31a to the roof side inner 13 and the lower ends of the first end wall 31a to the third end wall 31c as wheels. This is done by joining to the house 35.

The package bracket 37 is joined between the upper back panel 15 and the roof side inner 13 as follows.
The wall surfaces of the package bracket 37 are in contact with each other or laminated so that the vehicle front side wall portion, the first end wall portion 31a of the strainer 19 and the first horizontal wall portion 29a of the horizontal reinforcement portion 17 are continuous. In this state, the wall portions on the vehicle upper side of the package bracket 37 and the top horizontal wall portion 25 of the upper back panel 15 are joined so that the respective wall surfaces are in contact with each other or stacked. Further, the end portion on the outer side in the vehicle width direction and the roof side inner 13 are joined.
Thus, the package bracket 37 is joined to each member, whereby the entire length between the pair of roof side inners 13 is connected by the upper back panel 15 and the package bracket 37.

In such an upper back structure 11, when various stresses are applied to the vehicle body, they are loaded in the vicinity of the roof side inner 13 and are carried by the respective parts according to the direction.
When stress is applied in the longitudinal direction of the vehicle body in the vicinity of each roof side inner 13, for example, the second end wall portion 31 b of the strainer 19 and the second lateral wall portion 29 b of the lateral reinforcement portion 17 apply stress in the vehicle longitudinal direction. It acts as a share surface to support.
When stress is applied in the vehicle width direction in the vicinity of each roof side inner 13, for example, the first end wall portion 31 a, the third end wall portion 31 c of the strainer 19, and the first horizontal wall portion of the horizontal reinforcement portion 17. 29a, the 3rd horizontal wall part 29c, and the wall part by the side of the vehicle of the package bracket 37 act as a shear plane for supporting the stress of a vehicle width direction.

According to the vehicle upper back structure 11 as described above, the plurality of lateral wall portions 29a to 29c of the lateral reinforcement portion 17 are arranged in the opposite directions to each other at the plurality of bent portions along the vehicle width direction. The end wall portions 31 a to 31 c of the strainer 19 are bent and joined so as to correspond to the horizontal wall portions 29 a to 29 c of the horizontal reinforcement portion 17. Here, since each horizontal wall part 29a-29c and end part wall part 31a-31c can be arrange | positioned in several directions, the intensity | strength with respect to stress is obtained in several directions. Therefore, sufficient rigidity near the roof side inner 13 can be secured.
In addition, since the number and size of the lateral wall portions 29a to 29c and the end wall portions 31a to 31c can be easily adjusted within a range in which rigidity can be ensured, it is possible to reduce these and reduce the weight. It is possible.

Since the horizontal reinforcing portion 17 is formed by bending the front end portion side of the upper back panel 15, it is not necessary to provide the horizontal reinforcing portion 17 as a separate member as in the prior art. Therefore, the number of parts constituting the upper back structure 11 of the vehicle can be reduced, and the configuration can be simplified.
Since the horizontal wall portions 29a to 29c are arranged on the through opening 23 side of the top horizontal wall portion 25 of the upper back panel 15, the horizontal wall portions 29a to 29c and the end wall portions 31a to 31c are arranged on the inner side. To make it smaller. In addition, since the lateral wall portion 29c and the end wall portion 31c are joined on the inner side of the lateral wall portion 29b and the end wall portion 31b, the lateral wall portion 29c and the end wall portion 31c are greatly increased outward. There is no need to provide and join. Therefore, the weight can be reduced.
As a result, it is possible to simplify the structure and reduce the weight while ensuring the rigidity in the vicinity of the roof side inner 13 and realizing the desired body torsional rigidity.

  In the upper back structure 11 of the vehicle, the first lateral wall portion 29a and the third lateral wall portion 29c are bent so as to be opposite to the second lateral wall portion 29b, and the first end wall The part 31a thru | or the 3rd end part wall part 31c are formed in the shape which can be joined corresponding to this. Therefore, the structure of the horizontal reinforcement part 17 can be simplified and the horizontal reinforcement part 17 can be reduced in weight.

  In the vehicle upper back structure 11, the second lateral wall portion 29 b has a wall surface that extends in the vehicle front-rear direction and the vehicle width direction, and the second end wall portion 31 b has a circular arc shape that curves in the vehicle height direction. Wall. Therefore, when stress is applied to the vehicle body, the longitudinal stress in the vehicle can be supported by the continuous second lateral wall portion 29b and the second end wall portion 31b, and the continuous stress in the vehicle width direction is third. It can be supported by the lateral wall portion 29c and the third end wall portion 31c. In particular, inside the second lateral wall portion 29b and the second end wall portion 31b, the continuous third lateral wall portion 29c and the third end wall portion 31c support stress in the vehicle width direction as tension. Therefore, rigidity can be further improved.

  In the upper back structure 11 of the vehicle, the second lateral wall portion 29b is disposed away from the roof side inner 13 and joined to the second end wall portion 31b. For this reason, it is not necessary to form the second horizontal wall portion 29b and the third horizontal wall portion 29c excessively long or to provide a connection portion with the roof side inner 13, thereby reducing the weight and simplifying the configuration. .

  In the upper back structure 11 of the vehicle, the roof side inner 13 and the upper back panel 15 are connected via a package bracket 37, and the package bracket 37 is connected to the top horizontal wall portion 25 and the first horizontal wall portion 29a of the upper back panel 15. , And the first end wall portion 31a of the strainer 19. Therefore, it is not necessary to provide the package bracket 37 with a width corresponding to the entire width of the strainer 19, and the weight can be reduced accordingly. In addition, the total length of the package bracket 37 and the upper back panel 15 can be continued with sufficient strength, and the continuous first lateral wall portion 29a, the first end wall portion 31a, and the wall portion of the package bracket 37 on the front side of the vehicle. Thus, the stress in the vehicle width direction can be supported. Therefore, rigidity can be ensured with the entire length between the roof side inners 13.

In addition, the said embodiment can be suitably changed within the scope of the present invention. For example, in the above description, the first horizontal wall portion 29a to the third horizontal wall portion 29c are adjacent to each other, and the first horizontal wall portion 29a to the third horizontal wall portion 29c are adjacent to each other. However, these may be provided apart from each other, and may be arranged via a plurality of bent portions or curved portions.
In the above description, the end portion reinforcing portion is constituted by a strainer having a sheet metal structure, but another structure such as a support may be used.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Upper back structure 13 Roof side inner 15 Upper back panel 17 Horizontal reinforcement part 19 Strainer 21 Floor cross member 23 Through opening 25 Top part horizontal wall part 27a, 27b, 27c Bending part 29a 1st horizontal wall part 29b 2nd side wall Installation wall portion 29c Third lateral wall portion 31a First end wall portion 31b Second end wall portion 31c Third end wall portion 32a Joint portion 33b, 33c Bending portion 35 Tire house 37 Package bracket 43 Upper back member 45 Upper back panel 47 Package bracket 48 Strainer 49a First horizontal wall portion 49b Second horizontal wall portion 49c Third horizontal wall portion 51a First end wall portion 51b Second end wall portion 51c Third end wall portion

Claims (5)

An upper back panel is installed between the pair of roof side inners, a lateral reinforcement portion extending in the vehicle width direction is provided on the front end side of the upper back panel, and both end sides of the lateral reinforcement portion are joined to the end reinforcement portions, respectively. Each of the end reinforcing portions is joined to the roof side inner, and a through opening penetrating in the vehicle front-rear direction is provided between the lateral reinforcing portion, the end reinforcing portion and the floor cross member. In the upper back structure,
The horizontal reinforcing portion includes a plurality of horizontal wall portions extending in the vehicle width direction, and the plurality of horizontal wall portions are configured to rotate the upper back panel a plurality of times in opposite directions at a plurality of bent portions along the vehicle width direction. It is formed by bending, and is arranged on the through opening side from the top horizontal wall portion of the upper back panel,
The end reinforcing portion includes a plurality of end wall portions bent to correspond to the plurality of lateral wall portions,
An upper back structure for a vehicle, wherein the plurality of lateral wall portions and the plurality of end wall portions are joined together by wall surfaces.   The plurality of horizontal wall portions include a first horizontal wall portion on the top horizontal wall portion side, a third horizontal wall portion spaced from the top horizontal wall portion, the first horizontal wall portion, and the third horizontal wall portion. A second horizontal wall portion disposed between the installation wall portions, wherein the first horizontal wall portion and the third horizontal wall portion are in opposite directions with respect to the second horizontal wall portion. The plurality of end wall portions include a first end wall portion to a third end wall portion corresponding to the first horizontal wall portion to the third horizontal wall portion. The upper back structure of a vehicle according to claim 1, wherein the upper back structure is a vehicle.   The said 2nd horizontal wall part has a wall surface which spreads in a vehicle front-back direction and a vehicle width direction, and the said 2nd end wall part has a wall surface curved in the vehicle height direction, It is characterized by the above-mentioned. Vehicle upper back structure.   4. The vehicle upper back structure according to claim 3, wherein the second lateral wall portion is disposed apart from the roof side inner and joined to the second end wall portion. 5.   The roof side inner and the upper back panel are connected via a package bracket, and the package bracket is joined to the wall surfaces of the top horizontal wall portion, the first horizontal wall portion, and the first end wall portion. The upper back structure for a vehicle according to any one of claims 2 to 4, wherein the upper back structure is a vehicle.

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