JP2013006519A - Vehicle body upper structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body upper structure capable of maintaining a sufficient strength for impact load from the vehicle body in longitudinal and lateral directions, without increasing a vehicle weightor product cost.SOLUTION: A continuous integrated upper frame 10 is formed by three-dimensional bending and molding a cylindrical member of substantially closed cross section, and a roof side rail area and a front pillar area are formed on the continuous integrated upper frame 10. The cross section of the roof side rail area is formed into a substantially inverted triangle shape. The end of each of the roof rails 13A, 13B, 13C is combined with the side of the roof side rail area, and a side outer panel 51 is mounted on the vehicle exterior side. The end of a roof panel 50 and an upper end of the side outer panel 51 are combined with the upper surface of the roof side rail area.

Description

  The present invention relates to a vehicle body upper structure straddling from a roof part to a vehicle body front side.

  In sedan type vehicles, the roof side rail is arranged on the roof side, and the front pillar is integrally connected to the front part of the roof side rail, and the outer panel is attached to the outer surface of each side. It has been. A plurality of roof rails extending in the vehicle width direction are installed between the left and right roof side rails, and a roof panel is supported on the upper surface of each roof rail (see, for example, Patent Document 1).

US Pat. No. 5,332,281 JP 2007-83304 A

  However, in this conventional vehicle upper structure, the portion extending from the roof side rail to the front pillar is formed by connecting a plurality of members, so when an impact load is input in the longitudinal direction of the vehicle body, these connections are made. There is a concern that stress concentration occurs in the part or the part where the cross section changes greatly. For this reason, many reinforcing members are required as a countermeasure against this, resulting in an increase in the weight of the vehicle body and an increase in product cost.

  In addition, in this conventional vehicle body superstructure, the roof side rail is lower than the height of the center region in the vehicle width direction of the roof rail that supports the roof panel. If you try to make a structure that is strong against the input of impact load from the side of the car body, you have to join it shifted upward with respect to the heart or form a large bent part at the edge of each roof rail, Many reinforcing members are required. Therefore, in this case as well, many reinforcing members are required as a countermeasure, which increases the weight of the vehicle body and increases the product cost.

  Therefore, the present invention provides a vehicle body upper structure capable of maintaining sufficient strength against the impact load from the front and rear direction of the vehicle body and the impact load from the side without increasing the vehicle body weight or increasing the product cost. It is something to be offered.

The vehicle body superstructure according to the present invention employs the following means in order to solve the above problems.
In the invention according to claim 1, the roof side rail disposed on the roof side portion and the front pillar extending from the front end portion of the roof side rail toward the front lower portion are formed of a cylindrical member having a substantially closed cross section. Formed as a continuous frame member (for example, the upper frame 10 of the embodiment) having a substantially constant cross-section by three-dimensional bending, and a roof side rail region (for example, the roof side region 10a of the embodiment) on the frame member is formed. The cross-section of the roof side rail region is formed on the upper surface of the roof side rail region at the end of the roof panel (for example, the roof panel 50 in the embodiment) in the vehicle width direction. (For example, the joint flange 50a of the embodiment) and a side outer panel (for example, the outer surface of the roof side rail region on the outer side in the vehicle width direction) The joint flange (for example, the joint flange 51a of the embodiment) at the upper end of the side outer panel 51) of the embodiment is joined to each other, and the roof panel is mounted on the inner side surface in the vehicle width direction of the roof side rail region on the frame member. The roof rails that are supported in the vehicle width direction (for example, the roof rails 13A, 13B, and 13C in the embodiment) are joined to each other.

  According to a second aspect of the present invention, in the vehicle body superstructure according to the first aspect, the lower end of the roof side rail region on the frame member and the mounting flange of the door opening trim at the lower end of the side outer panel (for example, in the embodiment) The mounting flange 47) is connected via a height supplement bracket (for example, the height supplement bracket 46 of the embodiment).

  According to a third aspect of the present invention, in the vehicle body superstructure according to the first or second aspect, a side curtain airbag module (e.g., between the roof side rail region on the frame member and the mounting flange of the side outer panel) The module 48) of the embodiment is arranged.

  According to a fourth aspect of the present invention, in the vehicle body superstructure according to the second or third aspect, in the roof side rail region of the frame member, an extended flange extending downward (for example, the extended flange 32 of the embodiment). Is provided, and one end of the bracket for supplementing the height is coupled to the extended flange.

  The invention according to claim 5 is the vehicle body upper structure according to any one of claims 1 to 4, wherein an end in the vehicle width direction of the roof panel and an upper end of the side outer panel are adjacent to the joint flange, respectively. The connecting flange is coupled to the upper surface of the roof side rail region of the frame member so that the portion to be bent is bent in a stepped shape and the edges of both are formed in a concave shape.

  According to a sixth aspect of the present invention, in the vehicle body superstructure according to any one of the first to fifth aspects, the frame member extends from the rear end portion of the roof side rail region toward the rear lower portion. (For example, the rear pillar region 10c of the embodiment) is integrally formed.

  The invention according to claim 7 is the vehicle body superstructure according to any one of claims 1 to 5, wherein the frame member has a rear end portion of the roof side rail region curved in an inverted U shape at the vehicle body rear portion. The vehicle body rear frame (for example, the vehicle body rear frame 70 of the embodiment) is provided.

  According to an eighth aspect of the present invention, in the vehicle body upper structure according to any one of the first to seventh aspects, the roof rail has support flanges (for example, support flanges 13a and 13b according to the embodiment) at the upper ends of the front wall and the rear wall. ) Is formed in a hat-shaped cross-section with an upward opening, and the roof panel is supported by the front and rear support flanges, and the bottom wall, the front wall, and the rear wall are provided at both ends in the vehicle width direction. Are provided with side coupling flanges (for example, the side coupling flanges 13c, 13d, and 13e of the embodiment) that are bent and extended in the vehicle width direction of the roof side rail region of the frame member. A reinforcing plate (for example, an embodiment) is coupled to the upper surface of the roof side rail region of the frame member on the upper surface of both ends in the vehicle width direction of the roof rail. Reinforcing plate 49), or, it is characterized in that the flange part extending from the upper portion of the roof side rail regions are coupled.

According to the first aspect of the present invention, the region continuing from the roof side rail to the front pillar is formed by a continuous cylindrical member having a substantially constant cross-section that is three-dimensionally bent, so that many reinforcing members need to be added. Although it is a lightweight skeleton structure, sufficient strength can be maintained against an impact load from the front-rear direction of the vehicle body.
Further, according to the present invention, the roof side rail region on the frame member is formed to have a substantially inverted triangular cross section when the vehicle is installed, and the roof panel in the vehicle width direction of the roof panel is formed on the upper surface of the roof side rail region. The joint flange at the end of each side and the joint flange at the top end of the side outer panel are joined to each other, and the end of the roof rail is joined to the inner side surface in the vehicle width direction of the roof side rail region. Arranged at a sufficiently high position close to the panel, the impact load from the side input to the roof side rail region can be efficiently received by the roof rail without causing a large bent portion in the roof rail. Therefore, it is possible to maintain a sufficient strength against an impact load from the side of the vehicle body while being a lightweight skeleton structure that does not require the addition of many reinforcing members.
Further, according to the present invention, the roof side rail region of the frame member is formed in a substantially inverted triangular shape, so the frame member is arranged along the corner of the vehicle body side portion formed by the roof panel and the side outer panel. Thus, the upper part of the vehicle body can be reinforced while ensuring a sufficiently large vehicle interior space.

  According to the second aspect of the present invention, the lower end of the roof side rail region of the frame member and the mounting flange of the door opening trim at the lower end of the side outer panel are coupled via the height supplement bracket. Therefore, the rigidity of the side outer panel, in particular, the supporting rigidity of the mounting flange portion can be sufficiently increased.

  According to the third aspect of the present invention, the space side curtain airbag module formed between the roof side rail region on the frame member and the mounting flange of the side outer panel is disposed. The indoor space is not narrowed.

  According to the fourth aspect of the invention, the roof side rail region of the frame member is provided with an extending flange extending downward, and one end of the bracket for height supplementation is coupled to the extending flange. Even if the number of brackets for height supplementation is reduced, a sufficient restraining force for the mounting flange of the door opening trim can be maintained.

  According to the fifth aspect of the present invention, the end of the roof panel in the vehicle width direction and the upper end of the side outer panel are bent in a stepped shape, and the edges of the two form a concave shape so that each joint flange is a frame. Since it is coupled to the upper surface of the roof side rail region of the member, the roof side rail region of the frame member is disposed sufficiently upward, and the roof rail is positioned with respect to the roof side rail region without providing a large bend in the roof rail. Can be combined in a posture close to the horizontal.

  According to the invention of claim 6, since the rear pillar region is integrally formed at the rear end portion of the roof side rail region of the frame member, in the body type vehicle such as a sedan or a coupe, the increase in the vehicle body weight or the product Sufficient strength can be maintained with respect to the impact load from the front-rear direction and the impact load from the side of the vehicle body without causing an increase in cost.

  According to the invention of claim 7, since the rear end portion of the roof side rail region of the frame member is coupled to the vehicle body rear frame that is provided in the vehicle body rear portion so as to be bent in an inverted U shape, a hatchback, a wagon, etc. In the body type vehicle, sufficient strength can be maintained with respect to the impact load from the front-rear direction and the impact load from the side of the vehicle body without increasing the weight of the vehicle body or increasing the product cost.

  According to the eighth aspect of the present invention, the roof rail is formed in a hat-shaped cross-sectional shape with an opening facing upward, and the support flange for supporting the roof panel is provided on the upper ends of the front wall and the rear wall of the roof rail. Side coupling flanges are provided on the bottom wall, the front wall, and the rear wall. The side coupling flanges are coupled to the inner side surfaces of the roof side rail region of the frame member in the vehicle width direction. Since the reinforcing member coupled to the upper surface of the roof side region or the flange portion extending from the upper portion of the roof side region is coupled to the upper surface of the roof side region, the roof side rail region of the frame member can be reduced without reducing the indoor space. The bonding strength between the roof rail and the roof rail can be increased.

It is a perspective view which shows the frame | skeleton part of the vehicle of 1st Embodiment of this invention. It is sectional drawing corresponding to the AA cross section of FIG. 1 of the vehicle of 1st Embodiment of this invention. It is sectional drawing corresponding to the BB cross section of FIG. 1 of the vehicle of 1st Embodiment of this invention. It is sectional drawing corresponding to CC cross section of FIG. 1 of the vehicle of 1st Embodiment of this invention. It is sectional drawing corresponding to the DD cross section of FIG. 6 of the vehicle of 1st Embodiment of this invention. 1 is an exploded perspective view of a vehicle according to a first embodiment of the present invention. It is a perspective view which shows the frame | skeleton part of the vehicle of 2nd Embodiment of this invention. It is sectional drawing corresponding to the EE cross section of FIG. 7 of the vehicle of 2nd Embodiment of this invention. It is sectional drawing corresponding to the FF cross section of FIG. 7 of the vehicle of 2nd Embodiment of this invention. It is an enlarged view of the G section of Drawing 7 of vehicles of a 2nd embodiment of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
First, the first embodiment shown in FIGS. 1 to 6 will be described.
FIG. 1 is a perspective view showing a skeleton part of a vehicle 1 according to this embodiment.
The vehicle 1 of this embodiment is a sedan type vehicle, and an engine room 3 and a trunk room 4 are provided before and after the passenger compartment 2, and a front seat space and a rear seat space are secured in the passenger compartment 2.

  An upper frame 10 (frame member) having a closed cross-sectional structure extending in the longitudinal direction of the vehicle body is disposed on both sides of the roof of the vehicle 1 in the vehicle width direction. An extending side sill 11 having a closed cross-sectional structure is disposed. The upper frame 10 extends further from the side of the roof toward the front lower side and the rear lower side of the vehicle, and the front pillar region 10b and the rear pillar region 10c are continuous before and after the roof side rail region 10a on the roof side. The structure is provided. The substantially central regions of the vehicle left and right upper frames 10 and side sill 11 in the longitudinal direction of the vehicle body are connected by a center pillar 12.

  The center pillar 12 is configured by combining a front pillar tube 30A and a rear pillar tube 30B made of a metal square tube member. The front pillar tube 30A has its upper and lower edges curved forward, the rear pillar tube 30B has its upper and lower edges curved rearward, and the vertical central area of both faces toward the outside in the vehicle width direction. Swells slightly. The front pillar tube 30 </ b> A and the rear pillar tube 30 </ b> B are coupled so that upper and lower ends form a truss structure with respect to the upper frame 10 and the side sill 11.

  The roof side rail regions 10a of the left and right upper frames 10 are connected by a plurality of roof rails 13A, 13B, and 13C extending in the vehicle width direction, and the left and right side sills 11 similarly extend in the vehicle width direction. Are connected by a plurality of floor cross members 14A, 14B, 14C. The front end of each of the left and right upper frames 10 (the front end of the front pillar region 10b) has an upper end of a front pillar lower 18 having a closed cross-section structure that hangs upward from the front end of the side sill 11, and a front pillar lower 18. The upper member 19 is connected to an upper member 19 that curves and extends downward from the upper end of the front portion.

Front side frames 15 extending in the vehicle longitudinal direction are arranged on both sides of the engine room 3 in the vehicle width direction, and rear side frames 16 extending in the vehicle longitudinal direction are arranged on both sides of the trunk room 4 in the vehicle width direction. Has been.
The rear end portions of the left and right front side frames 15 extend in the vehicle width direction and extend in the vehicle body front-rear direction below the vehicle compartment 2 and the dashboard lower cross member 20 connecting the left and right front pillar lowers 18. The front floor frame 21 is coupled to the front edge portion. Further, the side surface from the rear end portion of each front side frame 15 is coupled to the front end portion of the side sill 11 via the outrigger 22. 1 is a substantially U-shaped front bulkhead upper that connects the left and right upper members 19 at the front upper end of the engine room 3, and 24 is coupled to the front bulkhead upper 23 and accommodates the radiator. It is the front bulkhead lower which forms a part. Further, the front end portions of the left and right upper members 19 extending to the lower front portion of the vehicle 1 are coupled to the front end side surface of the front side frame 15 via a connecting member 25.

  On the other hand, the front end portions of the left and right rear side frames 16 are curved outward in the vehicle width direction and coupled to the left and right side sills 11 and are connected to each other via a plurality of cross members 26A and 26B.

2, 3, and 4 are cross-sectional views taken along the line A-A in FIG. 1 of the front pillar region 10 b, the roof side rail region 10 a, and the rear pillar region 10 c of the upper frame 10 to which the side outer panel 51 that covers the outer side in the vehicle width direction is attached. The cross section corresponding to a BB cross section and a CC cross section is shown.
The upper frame 10 is formed into a predetermined curved shape by three-dimensional bending after a cylindrical member having a substantially closed cross-sectional shape is formed by roll forming. Specifically, the upper frame 10 has a closed cross-sectional shape of a substantially inverted triangle shape with an extending flange 32 projecting, and the extending flange 32 faces a lower side of the vehicle body and forms one side of the inverted triangular shape of the cross section. It is assembled so that the side faces inward in the vehicle width direction.

  A side outer panel 51 that covers the outer surface of the upper frame 10 on the outer side in the vehicle width direction is attached to the upper frame 10. An attachment flange 47 to which a door opening trim such as a body side weatherstrip is attached at the door opening is formed at the lower edge of the side outer panel 51 by bending downward.

  Specifically, in the front pillar region 10b, as shown in FIG. 2, the inner side edge in the vehicle width direction on the upper side of the side outer panel 51 is welded and fixed to the upper surface 44 via another panel member 45, and extended. A mounting flange 47 at the lower edge of the side outer panel 51 is fixed to the outer surface of the flange 32 by welding.

  In the roof side rail region 10a, as shown in FIG. 3, the upper end portion of the side outer panel 51 is welded and fixed to the flat upper surface 44 extending substantially horizontally together with the roof panel 50, and the extending flange 32 is used for height supplementation. It is connected to the mounting flange 47 via the bracket 46. In the case of this vehicle 1, the roof side rail region 10a of the upper frame 10 is disposed at a sufficiently high position close to the roof panel 50, and the end of the roof panel 50 in the vehicle width direction and the upper end of the side outer panel 51 are located below. Are fixed to the upper surface 44 of the roof side region 10a by joint flanges 50a and 51a formed by bending in steps. More specifically, the roof flange 50 and the side outer panel 51 are formed such that the flanges 50a and 51a are overlapped with each other so that the end edges of the roof panel 50 and the side outer panel 51 extend in the longitudinal direction of the vehicle body. The flanges 50 a and 51 a are welded and fixed to the upper surface 44 of the roof side rail region 10 a of the upper frame 10. Further, the height supplement bracket 46 is formed of a strip-shaped metal plate, and at a plurality of locations in the longitudinal direction of the vehicle body of the extension flange 32 of the roof side rail region 10a (two locations in the example shown in FIG. 1), The extension flange 32 and the mounting flange 47 at the lower end of the side outer panel 51 are connected.

  In the rear pillar region 10 c, as shown in FIG. 4, the inner edge in the vehicle width direction on the upper end side of the side outer panel 51 is welded and fixed to the upper surface 44, and the extension flange 32 is interposed via the rear inner panel 27. The lower edge portion of the side outer panel 51 is coupled.

5 and 6 are views showing the structure of the connecting portion between the roof side rail region 10a of the upper frame 10 and the roof rails 13A, 13B, and 13C.
The roof rails 13A, 13B, and 13C are members that support the roof panel 50 in the vehicle width direction. As shown in FIG. 6, support flanges 13a and 13b are extended at the upper ends of the front wall and the rear wall. It is formed in a hat-shaped cross-sectional shape with an opening upward. The roof panel 50 is joined to the upper surface of each support flange 13a, 13b. In addition, side coupling flanges 13c, 13d, and 13e are provided at both ends in the axial direction of the roof rails 13A, 13B, and 13C. The side coupling flanges 13c, 13d, and 13e are formed by extending and bending the bottom wall, the front wall, and the rear wall.

The end portions of the roof rails 13A, 13B, and 13C in the axial direction are abutted against the side surfaces 43 on the inner side in the vehicle width direction of the roof side rail regions 10a of the upper frames 10 on both sides, and in this state, the side coupling flanges 13c and 13d , 13e are fixed to the side surface of the roof side rail region 10a by welding. Further, the upper surface of each end portion of the roof rails 13A, 13B, 13C in the axial direction (the upper surface of the support flanges 13a, 13b) and the upper surface 44 of the roof side rail region 10a abutted against each end portion are made of metal plates. A reinforcing plate 49 is welded so as to straddle both. As shown in FIG. 5, the joining flanges 50 a and 51 a of the roof panel 50 and the side outer panel 51 are joined together with the reinforcing plate 49 in the region where the reinforcing plate 49 on the upper surface 44 of the roof side rail region 10 a is joined.
In this embodiment, the upper surface of each end portion in the axial direction of the roof rails 13A, 13B, and 13C and the upper surface 44 of the roof side rail region 10a are joined with a separate reinforcing plate 49 therebetween. In addition, a flange portion is integrally formed at the inner end in the vehicle width direction at the upper end of the roof side rail region 10a, and the flange portion is joined to the upper surface of the end portion in the axial direction of the roof rails 13A, 13B, 13C. good.

  In the vehicle 1, the roof side rail region 10 a of the upper frame 10 is disposed at a sufficiently high height close to the roof panel 50, and the extending flange 32 extends downward from the lower end of the roof side rail region 10 a. The mounting flange 47 at the lower end of the side outer panel 51 is largely separated from each other, and is connected by the height supplement brackets 46 at two places in the longitudinal direction of the vehicle body as described above. The extension flange 32 on the roof side rail region 10a side and the mounting flange 47 on the side outer panel 51 side have a bracket 46 partially interposed therebetween, but even if the bracket 46 exists, the roof side The side 43 of the rail region 10a is greatly recessed toward the outside of the vehicle. In a region between the extending flange 32 and the mounting flange 47 including the hollow portion, a side curtain airbag module 48 is installed. In addition, 42 in FIG. 5 is a roof lining installed in the ceiling part in the compartment 2.

  Further, as shown in FIG. 1, the rear end of the upper frame 10 (rear pillar region 10c) extends to substantially the same position in the vehicle longitudinal direction with respect to the rear end of the rear side frame 16, and the rear end of both Are adjacent to each other via a connecting member (not shown).

  In addition, although the example which formed the upper frame 10 by roll-form shaping | molding was demonstrated above, the upper frame 10 can also be formed not only by roll-form shaping | molding but drawing drawing, extrusion molding, UO shaping | molding, etc. .

  As described above, in the sedan type vehicle 1 of this embodiment, the front pillar region 10b, the roof side rail region 10a, and the rear pillar region 10c are continuously formed on the upper frame 10 having a substantially closed cross-sectional shape. The impact load input from the longitudinal direction of the vehicle body can be reliably received by the upper frame 10 having a continuous substantially closed cross-sectional shape. Therefore, the input load from the front-rear direction of the vehicle body can be received throughout the upper frame 10 without causing stress concentration.

  Furthermore, in the vehicle 1 of this embodiment, the roof side rail region 10a of the upper frame 10 is disposed at a sufficiently high position close to the roof panel 50, and the roof panel 50 is joined to the upper surface of the roof side rail region 10a. The flange 50a and the joining flange 51a of the side outer panel 51 are joined, and the end portions of the roof rails 13A, 13B, and 13C are abutted and joined to the side surface 43 on the inner side in the vehicle width direction of the roof side rail region 10a. Furthermore, since the roof side rail region 10a is arranged at a sufficiently high position close to the roof panel 50, the roof side rail region 10a is input to the roof side rail region 10a without forming a large bent portion in the roof rails 13A, 13B, 13C. The impact load from the side is applied to the roof rail 13A, 3B, can be received efficiently by 13C.

Further, in the vehicle 1 of this embodiment, the lower end of the roof side rail region 10a of the upper frame 10 and the mounting flange 47 at the lower end of the side outer panel 51 are connected by a height supplementing bracket 46. Therefore, the rigidity of the side outer panel 51, particularly the support rigidity of the mounting flange 47 can be sufficiently increased.
It is also possible to directly connect the upper end portion of the height supplement bracket 46 to the main body portion of the substantially closed cross section of the roof side rail region 10a without providing the extending flange 47 at the lower end of the roof side rail region 10a. However, when the extension flange 47 is provided at the lower end of the roof side rail region 10a and one end portion of the height supplementary bracket 46 is coupled to the extension flange 47 as in this embodiment, the height is increased. Even if the number of supplementary brackets 46 is reduced, a sufficient restraining force for the mounting flange 47 can be maintained.

  In the vehicle 1 of this embodiment, the side curtain airbag module 48 is disposed in a space formed between the roof side rail region 10a of the upper frame 10 and the mounting flange 47 of the side outer panel 51. Side curtain airbags can be installed without narrowing the space.

  Furthermore, in the vehicle 1 of this embodiment, the roof side rail region 10a of the upper frame 10 has a substantially inverted triangular cross section, so that the roof side rail region 10a is formed at the upper ends of the roof panel 50 and the side outer panel 51. It can be placed in a higher position close to it. Further, in the vehicle 1 of this embodiment, since the cross section of the roof side rail region 10a of the upper frame 10 is formed in a substantially inverted triangular shape, the corner of the vehicle body formed by the roof panel 50 and the side outer panel 51 is formed. By arranging the upper frame 10 (roof side rail region 10a) along the section, it is possible to reliably reinforce the upper part of the vehicle body while ensuring a sufficiently large vehicle interior space.

  Furthermore, in the vehicle 1 of this embodiment, the end of the roof panel 50 and the upper end of the side outer panel 51 are bent in a stepped shape, and the edges of both form a concave groove along the vehicle body front-rear direction. Since the joining flanges 50a and 51a are coupled to the upper surface 44 of the roof side rail region 10a, the roof side rail region 10a is disposed sufficiently upward, and the roof rails 13A, 13B, and 13C are not provided with large bent portions, and the roof rail 13A, 13B, and 13C can be coupled to the roof side rail region 10a from a substantially horizontal direction.

  Further, in the vehicle 1, the roof rails 13A, 13B, and 13C are formed in a hat-shaped cross-sectional shape having an upward opening, and the roof panel 50 is supported by the support flanges 13a and 13b on the roof rails 13A, 13B, and 13C. In addition, side coupling flanges 13c, 13d, and 13e are provided on the bottom wall, front wall, and rear wall of the roof rails 13A, 13B, and 13C, and the roof of the upper frame 10 is provided on the side coupling flanges 13c, 13d, and 13e. Since the side surface 43 on the inner side in the vehicle width direction of the side rail region 10a is coupled, and the reinforcing plate 49 is coupled across the upper surfaces of both ends in the vehicle width direction of the roof rails 13A, 13B, and 13C and the upper surface of the roof side region 10a. The roof side rail region 10a of the upper frame 10 without reducing the space in the passenger compartment 2 Fureru 13A, 13B, coupling strength between 13C can be further improved.

Subsequently, a second embodiment shown in FIGS. 7 to 10 will be described. Note that, in the second embodiment described below, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and a partially overlapping description is omitted.
FIG. 7 is a perspective view showing a skeleton part of the vehicle 101 according to this embodiment.
The vehicle 101 of this embodiment is a wagon type vehicle, and an engine room 3 is provided in front of the passenger compartment 2, and a front seat space and a rear seat space are secured in the passenger compartment 2, and a rear seat space. A cargo compartment 5 is secured further rearward.

On both sides of the roof of the vehicle 101 in the vehicle width direction, upper frames 110 (frame members) having a closed cross-sectional structure extending in the longitudinal direction of the vehicle body are disposed. Since the vehicle 101 of this embodiment is a wagon type vehicle, the roof and the roof side rail region 110a of the upper frame 110 disposed on the side thereof extend substantially horizontally to the rear end of the vehicle body. The upper frame 110 extends further from the side of the roof toward the lower front part of the vehicle, and that portion serves as a front pillar region 110b.
As in the first embodiment, the upper frame 110 is formed into a predetermined curved shape by three-dimensional bending after a cylindrical member having a substantially closed cross-sectional shape is formed by roll forming. Yes.

8 and 9 are a cross-sectional view taken along the line EE in FIG. 7 at the center portion and the vicinity of the rear end of the roof side rail region 110a of the upper frame 110 to which the side outer panel 51 covering the outer side in the vehicle width direction is attached. The cross section corresponding to a cross section is shown.
The cross section of the upper frame 110 is formed in a substantially inverted triangular shape, and an extended flange 32 that protrudes downward is provided at the lower end of the upper frame 110. The roof side rail region 110a of the upper frame 110 has a top surface 44 formed substantially horizontally, and a first side surface 43 on the inner side in the vehicle width direction inclined from the inner end of the upper surface 44 toward the lower outside. The roof rails 13A and 13B are coupled in the same manner as in the embodiment. The connecting portion structure of each of the roof rails 13A and 13B with respect to the roof side rail region 110a is the same as that shown in FIGS. 5 and 6 of the first embodiment.

  Also in this embodiment, the roof side rail region 110a is installed at a sufficiently high position close to the roof panel 50, and the upper surface 44 of the roof side rail region 110a excluding the vicinity of the rear end has a surface as shown in FIG. The joining flange 50a of the roof panel 50 and the joining flange 51a at the upper end of the side outer panel 51 are fixed by welding in a superposed state. Further, the extending flange 32 of the roof side rail region 110a and the mounting flange 47 at the lower edge of the side outer panel 51 are connected by a bracket 46 for height supplementation. A side curtain airbag module 48 is installed between the extension flange 32 and the mounting flange 47.

  As shown in FIG. 9, the upper edge part of the side outer panel 51 is welded and fixed to the upper surface of the vicinity of the rear end of the roof side rail region 110a. The extension flange 32 at the lower edge of the roof side rail region 110 a is coupled to the attachment flange 59 at the lower edge of the side outer panel 51 via a height supplement bracket 46. A rear quarter glass 52 is bonded and fixed in the vicinity of the outer surface of the mounting flange 59 at this portion.

FIG. 10 is an enlarged view of a portion G in FIG.
As shown in FIGS. 7 and 10, the rear end portion of the roof side rail region 110 a of the upper frame 110 is abutted against a vehicle body rear frame 70 that is curved in a reverse U shape at the vehicle body rear portion, and is not shown. A flange portion is welded and fixed to the front surface of the vehicle body rear frame 70.

The vehicle 101 of this embodiment is different from that of the first embodiment in that it is a wagon type that extends horizontally until the roof side rail region 110a of the upper frame 110 abuts against the rear body frame 70, but other basics. The structure of the upper part of the vehicle body is the same as that of the first embodiment.
Therefore, also in the case of the vehicle 101, sufficient strength can be maintained with respect to the impact load from the front-rear direction of the vehicle body and the impact load from the side without causing an increase in the weight of the vehicle body or an increase in product cost. .

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

1,101 ... Vehicle 10 ... Upper frame (frame member)
10a, 110a ... Roof side region 10b, 110b ... Front pillar region 10c ... Rear pillar region 13A, 13B, 13C ... Roof rail 13a, 13b ... Support flange 13c, 13d, 13e ... Side coupling flange 32 ... Extension flange 46 ... Height Supplementary bracket 47 ... Mounting flange 48 ... Module 49 ... Reinforcement plate 50 ... Roof panel 50a ... Joining flange 51 ... Side outer panel 51a ... Joining flange 70 ... Car body rear frame

Claims (8)

A roof side rail disposed on the roof side and a front pillar extending downward from the front end of the roof side rail are substantially formed by three-dimensional bending a cylindrical member having a substantially closed cross section. Formed as a continuous frame member of constant cross-section,
The roof side rail region on the frame member is formed to have a substantially inverted triangular cross section when the vehicle is installed, and a joint flange at the end of the roof panel in the vehicle width direction is formed on the upper surface of the roof side rail region. And the joining flange at the upper end of the side outer panel that covers the outer surface of the roof side rail region on the outer side in the vehicle width direction,
An upper structure of a vehicle body, wherein an end of a roof rail that supports the roof panel in the vehicle width direction is joined to a side surface in the vehicle width direction of a roof side rail region on the frame member.   The lower end portion of the roof side rail region on the frame member and the mounting flange of the door opening trim at the lower end of the side outer panel are coupled via a height supplement bracket. The vehicle body superstructure according to claim 1.   The vehicle body upper structure according to claim 1 or 2, wherein a module of a side curtain airbag is disposed between a roof side rail region on the frame member and a mounting flange of the side outer panel.   The roof side rail region of the frame member is provided with an extending flange extending downward, and one end of the height supplement bracket is coupled to the extending flange. Or the vehicle body superstructure of 3.   The end portion of the roof panel in the vehicle width direction and the upper end portion of the side outer panel are bent in a step shape at portions adjacent to the joint flange, and the end edges of the both form a concave shape. The vehicle body upper structure according to any one of claims 1 to 4, wherein the frame member is coupled to an upper surface of a roof side rail region of the frame member.   The said frame member is integrally formed with the rear pillar area | region extended toward the rear lower part from the rear-end part of the said roof side rail area | region, The Claim 1 characterized by the above-mentioned. Car body superstructure.   6. The frame member according to claim 1, wherein a rear end portion of the roof side rail region is coupled to a vehicle body rear frame that is provided in a curved shape in an inverted U shape at a vehicle rear portion. The vehicle body superstructure according to claim 1. The roof rail is formed in a hat-shaped cross-sectional shape with an upward opening with support flanges extending at the upper ends of the front wall and the rear wall, and supports the roof panel with the front and rear support flanges.
At both ends in the vehicle width direction, side coupling flanges are formed by extending and bending the bottom wall, the front wall, and the rear wall, respectively, and the vehicle width of the roof side rail region of the frame member is provided on the side coupling flange. The inner sides of the direction
A reinforcing plate coupled to the upper surface of the roof side rail region of the frame member or a flange portion extending from the upper portion of the roof side rail region is coupled to the upper surfaces of both ends of the roof rail in the vehicle width direction. The vehicle body superstructure according to any one of claims 1 to 7, wherein

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