JP5834929B2 - Vehicle roof structure - Google Patents

Description

  The present invention relates to a mohawk-less vehicle roof structure in which no mohawk portion is provided at a joint between a vehicle roof panel and a roof side rail.

  Conventionally, there has been proposed a vehicle roof structure in which a mohawk portion is not provided at a joint portion between a vehicle roof panel and a vehicle roof side rail. For example, in Patent Document 1, a vehicle outer end portion of a roof panel is bent in a substantially Z-shaped cross section, and a lower side portion is placed on a joint surface of a roof side rail. And the part which curves so that it may become convex on the Z-shaped vehicle outer side of a roof panel, and the roof side rail are joined by laser brazing (brazing).

JP 2005-161909

  However, in the case of the above prior art, the side outer panel is heated during welding by laser brazing, the side outer panel is deformed by thermal distortion, and the appearance of the upper side surface of the vehicle is deteriorated.

  In view of the above fact, an object of the present invention is to obtain a vehicle roof structure capable of suppressing deformation due to thermal distortion of a side outer panel.

According to a first aspect of the present invention, there is provided a roof structure for a vehicle according to the present invention, comprising: a roof main body portion constituting an outer plate of the vehicle roof; A roof panel having an end bent portion, an inner flange portion that extends horizontally inward in the vehicle width direction, a raised portion that is bent upward from the inner flange portion, and an obliquely outer side from the upper end of the raised portion. A joint that extends upward and is disposed so as to face the outer surface in the vehicle width direction of the outer end bending portion, and is formed by bending outward from the upper end of the joint in the vehicle width direction. And a vertical wall portion that is bent from the outer end in the vehicle width direction of the shelf to the vehicle upper side and forms a ridge line between the shelf and the vehicle width direction of the roof panel A side outer panel extending in the longitudinal direction of the vehicle along the end of the vehicle Wherein forming a closed cross section between the side outer panel, and a rail inner panel having an inner inner flange portion that extends to the inside in the vehicle width direction is disposed on the vehicle lower side of the inner flange portion, said side outer panel and the rail A rail outer reinforcement having an inner flange portion disposed between the inner panel and the inner flange portion and the inner flange portion sandwiched between the inner flange portion and the inner flange portion and joined to the inner inner flange portion. I have.

The vehicle roof structure described in claim 1 includes a roof panel and a side outer panel. The roof panel includes a roof body portion and an outer end bent portion formed by bending the vehicle body in the vehicle width direction end portion of the roof body toward the vehicle lower side. The side outer panel includes an inner flange portion that extends horizontally inward in the vehicle width direction, an upright portion that is bent upward from the inner edge of the inner flange portion in the vehicle width direction, and an obliquely upper outer side of the vehicle from the upper end of the upright portion. A joint portion extending toward the outside, and joined to the vehicle width direction outer side of the outer end bending portion at the joint portion, and an upper end is bent outward in both width directions to form a shelf portion. A vertical wall portion is formed by bending the shelf from the vehicle width direction outer side to the vehicle upper side. Accordingly, in the side outer panel, a ridge line is formed along the vehicle front-rear direction between the joint portion and the shelf portion, and a ridge line is also formed between the shelf portion and the vertical wall portion along the vehicle front-rear direction. .

  When the outer end bent portion and the joined portion are joined by welding, the outer end bent portion, the joined portion, and the roof main body and the shelf adjacent to these are heated. As a result, thermal distortion occurs in the shelf portion of the side outer panel, but the ridgeline is formed by bending between the shelf portion and the vertical wall portion. Therefore, the thermal distortion of the shelf portion is less likely to be transmitted to the outer side in the vehicle width direction than the design surface of the side outer panel, that is, the vertical wall portion, and deformation of the upper portion of the side surface of the side outer panel can be suppressed.

  The roof structure for a vehicle according to claim 2 is characterized in that the vertical wall portion is arranged in a vertical direction.

  In the vehicle roof structure according to the second aspect, since the vertical wall portion is disposed in the vertical direction, rainwater from the roof panel side is less likely to flow outward in the vehicle width direction than the vertical wall portion. Therefore, the function as the drainage groove of the step space between the shelf portions can be improved.

  The roof structure for a vehicle according to claim 3 is characterized in that the shelf is disposed flush with an upper surface of the roof body.

  In the vehicle roof structure according to the third aspect, the upper surface of the roof body and the shelf are arranged flush with each other. Therefore, the step of the joining portion is eliminated, and the laser torch can be tilted outward in the vehicle width direction while the front end of the laser torch used for joining is directed toward the joining portion between the outer end bent portion and the joining portion. Therefore, the degree of freedom of the irradiation angle of the laser torch can be secured and the joining work can be facilitated. Further, it is possible to improve the appearance of the joint portion between the joint portion and the shelf portion that are flush with each other.

  As described above, the vehicle roof structure according to the present invention has an excellent effect that the deformation of the side outer panel due to thermal strain can be suppressed.

It is a perspective view which shows the upper part of the vehicle to which the vehicle roof structure of this embodiment was applied. It is a longitudinal cross-sectional view of the vehicle roof structure along the AA line in FIG. It is a longitudinal cross-sectional view of the vehicle roof structure which concerns on this embodiment. It is a longitudinal cross-sectional view of the vehicle roof structure which concerns on this embodiment, and is a figure explaining the irradiation angle of a torch.

  Hereinafter, an embodiment of a vehicle roof structure according to the present invention will be described with reference to FIGS. 1 and 2. In the figure, an arrow UP indicates the vehicle upper side, an arrow OUT indicates the vehicle width direction outer side, and an arrow FR indicates the vehicle front side.

  FIG. 1 is a perspective view of an upper portion of a vehicle to which the vehicle roof structure according to the first embodiment is applied. 2 shows a cross-sectional view taken along line AA of FIG.

  As shown in FIG. 1, the vehicle roof 10 includes a roof panel 30 that covers the cabin and roof side rail portions 12 that are provided on both sides in the vehicle width direction. The roof side rail part 12 is arrange | positioned along the vehicle front-back direction as a pair of left-right vehicle body side structural member.

  As shown in FIG. 2, the roof side rail portion 12 is composed of three panels: a rail inner panel 14, a rail outer reinforcement 16, and a side outer panel 18. The rail inner panel 14 is disposed on the vehicle interior side, and the rail outer reinforcement 16 is disposed on the vehicle exterior side with respect to the rail inner panel 14. The rail inner panel 14 and the rail outer reinforcement 16 form a closed cross section. The side outer panel 18 is disposed on the outer side of the passenger compartment of the rail outer reinforcement 16. The rail inner panel 14, the rail outer reinforcement 16 and the side outer panel 18 are all made of a steel plate.

  The rail inner panel 14 includes a main body portion 14A that forms a closed cross-section with the rail outer reinforcement 16, an inner flange portion 14B that is bent substantially horizontally from the inner end portion of the main body portion 14A toward the vehicle width direction, The outer flange portion 14C is bent obliquely downward and outward from the outer end portion of the main body portion 14A.

  The rail outer reinforcement 16 is formed in a hat shape with a slightly open cross section, and is disposed substantially horizontally inward in the vehicle width direction from the inner end portion of the main body portion 16A. The inner flange portion 16B is bent, and the outer flange portion 16C is bent outward and obliquely downward from the outer end portion of the main body portion 16A.

  The side outer panel 18 is bent substantially horizontally inwardly in the vehicle width direction from the inner end of the main body 18A and a main body 18A having a bulge capable of covering the main body 16A of the rail outer reinforcement 16 from the outside of the passenger compartment. The inner flange portion 18B and the outer flange portion 18C bent obliquely downward and outward from the outer end portion of the main body portion 18A.

  On the inner side in the vehicle width direction of the main body portion 18A, an upright portion 22 that is bent upward from the inner flange portion 18B is formed. From the upper end of the upright part 22, the junction part 24 is extended toward the vehicle outer side diagonally upward. A shelf portion 26 is formed at the upper end of the joint portion 24 by bending outward in the vehicle width direction. A vertical wall portion 28 that is bent upward in the vehicle is formed at the outer end of the shelf portion 26 in the vehicle width direction. The vertical wall portion 28 is arranged in the vertical direction. Note that the vertical direction here does not need to be a complete vertical direction, but includes a case where the vertical direction is inclined to such a degree that it can be determined to be substantially the vertical direction. A ridge line 27 extending in the vehicle front-rear direction is formed between the shelf portion 26 and the vertical wall portion 28. Further, a step space 20 is formed between the shelf portion 26 and the vertical wall portion 28, which is retracted to the outside in the vehicle width direction from a joint portion with a roof panel 30 described later.

  Three pieces of the inner flange portion 14B of the rail inner panel 14, the inner flange portion 16B of the rail outer reinforcement 16 and the inner flange portion 18B of the side outer panel 18 are overlapped and joined by spot welding. Similarly, the outer flange portion 14C of the rail inner panel 14, the outer flange portion 16C of the rail outer reinforcement 16, and the outer flange portion 18C of the side outer panel 18 are overlapped and joined by spot welding. Thereby, the vehicle skeleton member in which the closed cross-section part 12A extends along the vehicle front-rear direction is formed on the roof side rail part 12.

  The roof panel 30 is formed in a gently curved shape that is convex toward the vehicle upper side, and includes a roof main body 32 that covers the cabin from the vehicle upper side. In addition, both end portions of the roof panel 30 in the vehicle width direction are bent so that the front ends are obliquely inward of the vehicle, and outer end bent portions 34 are formed. The outer end bent portion 34 is disposed so as to face the joint portion 24 of the side outer panel 18 and overlaps each other. The upper surface of the roof main body 32 and the upper surface of the shelf 26 of the side outer panel 18 are arranged flush with each other. The flush surface here includes a case where the upper surface of the roof body portion 32 and the upper surface of the shelf portion 26 do not need to be completely on the same plane and have a level difference that can be determined to be substantially flush. Yes. A brazing material 40 is applied between the roof main body 32 and the shelf 26 by laser brazing (brazing), and the roof panel 30 and the side outer panel 18 are joined via the brazing material 40.

  Next, the operation and effect of this embodiment will be described.

  When the roof panel 30 and the roof side rail portion 12 are joined, the roof panel 30 is disposed on the upper portion of the body including the roof side rail portion 12. At this time, the roof panel 30 accesses the body from above, and the outer end bent portion 34 is overlapped with the joint portion 24. Then, the brazing material 40 is heated and melted by laser brazing, the brazing material 40 is applied between the roof main body portion 32 and the shelf portion 26, and the roof panel 30 and the side outer panel 18 are joined via the brazing material 40. .

  At this time, heat is transmitted from the heated brazing material 40, and thermal distortion occurs in the side outer panel 18, particularly in the joint portion 24 and the shelf portion 26. However, in this embodiment, since the ridge line 27 is formed on the side outer panel 18, the amount of heat transfer to the outside in the vehicle width direction from the ridge line 27 is reduced. Therefore, in the side outer panel 18, it is possible to suppress deformation due to thermal distortion of the design surface visible to the user.

  Further, at the time of joining by laser brazing, the torch 50 for laser brazing can be tilted using the step space 20 as shown in FIG. Therefore, the degree of freedom of the irradiation angle of the torch 50 can be ensured, and the joining work can be facilitated.

  Further, since the vertical wall portion 28 of the side outer panel 18 is arranged in the vertical direction, rainwater from the roof panel 30 side is less likely to flow outward in the vehicle width direction than the vertical wall portion 28. Therefore, the function as a drainage groove (rain gutter) of the step space 20 between the shelf portion 26 and the vertical wall portion 28 can be improved.

  In order to secure the degree of freedom of the irradiation angle of the torch 50, it is conceivable that the vertical wall portion 28 itself is inclined outward in the vehicle width direction. It tends to flow outward in the width direction. By forming the shelf portion 26 as in this embodiment, the vertical wall portion 28 can be arranged in the vertical direction while ensuring the degree of freedom of the irradiation angle of the torch 50.

  Further, in the present embodiment, since the upper surface of the roof panel 30 and the upper surface of the shelf portion 26 are arranged to be flush with each other, the tip of the torch 50 is directed toward the joint portion between the outer end bent portion 34 and the joint portion 24. The torch 50 can be tilted outward in the vehicle width direction. Therefore, it is possible to secure the degree of freedom of the irradiation angle of the torch 50 and facilitate the joining work. Further, the appearance of the joined portion between the roof panel 30 and the side outer panel 18 that are flush with each other can be improved.

  In the present embodiment, the upper surface of the roof panel 30 and the upper surface of the shelf portion 26 are arranged so as to be flush with each other, but they are not necessarily arranged flush. For example, a step may be formed such that the roof panel 30 side is disposed on the top.

  Moreover, in this embodiment, although the vertical wall part 28 of the side outer panel 18 was arrange | positioned in the perpendicular direction, it does not necessarily need to be arrange | positioned in a perpendicular direction. The vertical wall portion 28 may be inclined outward in the vehicle width direction.

  Moreover, although this embodiment demonstrated the example in which the roof panel 30 and the side outer panel 18 were joined by laser brazing, you may join the roof panel 30 and the side outer panel 18 by another welding. Particularly in laser brazing, since the welding is performed at a high temperature, the effects of the present invention are more effectively exhibited.

DESCRIPTION OF SYMBOLS 10 Vehicle roof 18 Side outer panel 20 Step space 24 Joint part 26 Shelf part 28 Vertical wall part 30 Roof panel 32 Roof main-body part 34 Outer edge bending part

Claims (3)

A roof panel having a roof main body portion constituting an outer plate of the vehicle roof, and an outer end bent portion formed by bending the vehicle main body in the vehicle width direction end portion of the roof main body portion toward the vehicle lower side;
An inner flange portion that extends horizontally inward in the vehicle width direction, a raised portion that is bent upward from the inner flange portion, and a bent outer end that extends from the upper end of the raised portion obliquely upward to the outside of the vehicle. A joint portion that is disposed so as to face the outer surface in the vehicle width direction of the portion, a shelf portion that is formed by bending outward from the upper end of the joint portion in the vehicle width direction, and a vehicle width of the shelf portion A vertical wall portion that is bent from the outer end of the direction toward the upper side of the vehicle and forms a ridge line with the shelf, and extends in the vehicle longitudinal direction along the end portion of the roof panel in the vehicle width direction. The existing side outer panel,
A rail inner panel having an inner inner flange portion that forms a closed cross section with the side outer panel, extends inward in the vehicle width direction, and is disposed on the vehicle lower side of the inner flange portion;
A reinforce inner flange portion disposed between the side outer panel and the rail inner panel and sandwiched between the inner flange portion and the inner inner flange portion and joined to the inner flange portion and the inner inner flange portion; Rail outer reinforcement,
Vehicle roof structure with   The vehicle roof structure according to claim 1, wherein the vertical wall portion is arranged in a vertical direction. The roof structure for a vehicle according to claim 1, wherein the shelf portion is arranged flush with an upper surface of the roof main body portion.

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