JP2014019275A - Roof junction structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a roof junction structure for a vehicle capable of suppressing corrosion at an abutting part where a roof panel and a side outer panel composed of different kinds of metal abut on each other.SOLUTION: Under an abutting part P, in a vertical direction of a vehicle, where a roof panel 12 abuts on a side outer panel 20, a gap 36 is provided between an inclined wall part 30B of the roof panel 12 and an inclined wall part 24B of the side outer panel 20, and filler 38 is interposed in the gap 36. Therefore, water generated on a cabin side of the roof panel 12 due to dew condensation or the like can be prevented from invading the abutting part P. Thus, an electrocorrosion phenomenon generated at the abutting part P between the roof panel 12 and the side outer panel 20 is suppressed and prevented, and corrosion at the abutting part P can be suppressed.

Description

  The present invention relates to a vehicle roof joint structure including a joint portion between a vehicle roof panel and a side outer panel.

  Conventionally, there has been proposed a vehicle roof joint structure in which the appearance is improved by laser welding a vehicle roof panel and a side outer panel, and a roof molding is eliminated (for example, Patent Document 1).

Patent 3644290

  According to the above prior art, the end of the roof panel is in contact with the roof side rail for positioning with respect to the roof side rail. For this reason, when the roof panel and the roof side rail are made of different metals, corrosion occurs due to the electrolytic corrosion phenomenon when moisture exists in the contact portion.

  In view of the above facts, an object of the present invention is to provide a vehicle roof joint structure that suppresses corrosion at a contact portion where a roof panel formed of a different metal and a side outer panel abut.

  According to a first aspect of the present invention, there is provided a vehicular roof joint structure in which a roof panel made of a dissimilar metal and a roof side rail come into contact with each other, and both members on the upper side in the vehicle vertical direction of the contact portion. And an infiltration preventing means for preventing water from entering the abutting portion on the vehicle vertical direction lower side of the abutting portion.

  In the vehicle roof joint structure according to the first aspect of the present invention, the two members are joined on the upper side in the vehicle vertical direction of the abutting portion where the roof panel formed of a dissimilar metal and the roof side rail abut. As a result, the roof panel is fixed to the roof side rail.

  Here, in the case where members formed of different metals are brought into contact with each other, if the contact surfaces of both members are wet with water or the like, a potential difference occurs between the two members, and either one of the metals may rust. This phenomenon is called so-called dissimilar metal contact corrosion (electrolytic corrosion due to contact between dissimilar metals). In the present invention, the vertical direction of the vehicle in the contact portion where the roof panel and the roof side rail formed of dissimilar metals contact each other. On the lower side, there is an infiltration prevention means for preventing ingress of water.

  For this reason, it is possible to prevent water generated on the side of the cabin of the roof panel from entering the contact portion due to condensation or the like. Thereby, the electric corrosion phenomenon which arises in the contact part of both members can be suppressed and prevented. In addition, since the vehicle up-down direction upper side in the contact part becomes the design surface of a vehicle, it is painted. That is, since the surface of the contact portion on the upper side in the vehicle vertical direction is covered with the coating liquid, the electrolytic corrosion phenomenon is prevented.

  A vehicle roof joint structure according to a second aspect of the present invention is the vehicle roof joint structure according to the first aspect of the present invention, wherein the roof panel and the roof are arranged on the lower side in the vehicle vertical direction at the contact portion. A gap is provided between the rail and the side rail, and the flood prevention means is a closing means for closing the gap.

  In the vehicle roof joint structure according to the second aspect of the present invention, a gap is provided between the roof panel and the roof side rail on the vehicle vertical direction lower side of the contact portion. It is desirable that the roof panel is positioned with respect to the roof side rail by the contact portion so that the roof panel does not interfere with the roof side rail at portions other than the contact portion. For this reason, by providing a blocking means that closes this gap as a water infiltration prevention means, it is possible to prevent water generated on the vehicle compartment side of the roof panel from entering the contact portion due to condensation or the like.

  A roof joint structure for a vehicle according to a third aspect of the present invention is the roof joint structure for a vehicle according to the second aspect of the present invention, wherein the closing means is a filler interposed in a gap between both members. .

  In the vehicle roof joint structure according to the third aspect of the present invention, a filler such as a sealer or an adhesive is interposed in the gap between the two members as the closing means. When an adhesive is used as the filler, the bonding strength and the bonding rigidity are higher than that of the sealer in a solidified state.

  A roof joint structure for a vehicle according to a fourth aspect of the present invention is the roof joint structure for a vehicle according to the third aspect of the present invention, wherein the filler is a viscous material, and the lower part in the vehicle vertical direction at the contact portion. On the side, a proximity portion is provided which is formed on one of the roof panel and the roof side rail and which is close to the other side so as to prevent the filler from flowing down from the gap between the two members. .

  In the roof joint structure for a vehicle according to the fourth aspect of the present invention, in the vehicle vertical direction lower side of the abutment portion, either one of the roof panel and the roof side rail is provided with a proximity portion that is close to the other side. As a result, the gap between the two members is narrowed. Thereby, in the electrodeposition tank at the time of vehicle painting, it can suppress and prevent so that a viscous material may not flow down from the clearance gap between both members.

  Generally, in order to prevent the viscous material filled in the gap between the two members from flowing through the gap, the gap between the two members should be as narrow as possible. In this case, in the roof panel and the roof side rail, High machining accuracy is required.

  Accordingly, as in the present invention, it is necessary to form both members with high processing accuracy by providing a proximity portion on one of the roof panel and the roof side rail and partially narrowing the gap between both members. Disappear.

  As described above, the vehicle roof joint structure according to the first aspect of the invention is excellent in that it can suppress corrosion at the abutting portion where the roof panel and the side outer panel formed of different metals abut. It has the effect.

  Since the vehicle roof joint structure according to the second aspect of the present invention only needs to ensure the accuracy of the abutting portion where the roof panel and the side outer panel abut, the cost of the roof panel and the side outer panel can be reduced. , Has an excellent effect.

  The roof joint structure for a vehicle according to the invention described in claim 3 is excellent in that the roof panel can be temporarily fixed to the side outer panel using a filler while the roof panel is placed on the side outer panel. It has the effect.

  The roof joint structure for a vehicle according to the invention of claim 4 has an excellent effect that the cost of the roof panel and the side outer panel can be reduced.

FIG. 3 is an enlarged cross-sectional view in which a main part of FIG. 2 is enlarged. It is a longitudinal cross-sectional view of the roof joining structure for vehicles which shows the state cut | disconnected along the 2-2 line in FIG. It is a perspective view which shows the upper part of the vehicle to which the roof joining structure for vehicles of this embodiment was applied. It is an expanded sectional view corresponding to Drawing 1 showing the modification (1) of the roof joint structure for vehicles concerning this embodiment. It is an expanded sectional view corresponding to Drawing 1 showing the modification (2) of the roof joint structure for vehicles concerning this embodiment.

  Hereinafter, an embodiment of a vehicle roof joint 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.

(Configuration of vehicle roof joint structure)
First, the structure of the roof joint structure for vehicles which concerns on one embodiment of this invention is demonstrated.

  As shown in FIG. 3, the vehicle roof 10 includes a roof panel 12 that covers a cabin 50 (see FIG. 2), and roof side rails 14 provided at both ends in the vehicle width direction. . Here, the roof panel 12 is formed of a metal such as aluminum, an aluminum alloy, or a magnesium alloy, and the roof side rail 14 is formed of a steel plate.

  As shown in FIG. 2, the roof side rail 14 is composed of three panels: a rail inner panel 16, a rail outer reinforcement 18, and a side outer panel 20, all of which are made of steel plate. Yes. A rail inner panel 16 is disposed on the innermost side in the vehicle width direction among these panels. A rail outer reinforcement 18 is disposed outside the rail inner panel 16 in the vehicle width direction, and the rail inner panel 16 and the rail outer reinforcement 18 form a closed cross section 22. Further, a side outer panel 20 is disposed on the outer side in the vehicle width direction of the rail outer reinforcement 18.

  The rail inner panel 16 includes a main body portion 16 </ b> A that is inclined downward in the vehicle as it goes outward in the vehicle width direction and forms a closed cross-section portion 22 with the rail outer reinforcement 18. An inner flange portion 16B extending substantially horizontally toward the inner side in the vehicle width direction extends from the upper end portion (the inner edge portion in the vehicle width direction) of the main body portion 16A. Further, an outer flange portion 16C is formed at the lower end portion (outer edge portion in the vehicle width direction) of the main body portion 16A.

  Further, the rail outer reinforcement 18 has a cross-sectional hat shape that bulges outside the vehicle, and includes a main body portion 18A that forms a closed cross-section portion 22 together with the main body portion 16A. An inner flange portion 18B extending substantially horizontally toward the inner side in the vehicle width direction and overlapping on the inner flange portion 16B is extended from the inner edge portion of the main body portion 18A in the vehicle width direction. Further, an outer flange portion 18C is formed at the outer edge portion of the main body portion 18A in the vehicle width direction so as to incline downward in the vehicle width direction outward and overlap the outer flange portion 16C.

  Further, the side outer panel 20 includes a main body portion 20A that bulges outward in the vehicle width direction and covers the main body portion 18A of the rail outer reinforcement 18 from the outer side in the vehicle width direction. On the inner side in the vehicle width direction of the main body portion 20A, a joining wall 24 is provided over substantially the entire vehicle longitudinal direction, and the roof panel 12 is joined to the joining wall 24 (described later).

  Further, an inner flange portion 20B extending substantially horizontally toward the inner side in the vehicle width direction and overlapping on the inner flange portion 18B is extended from the inner end portion of the main body portion 20A in the vehicle width direction. Further, an outer flange portion 20C is formed from the outer end portion in the vehicle width direction of the main body portion 20A so as to incline downward in the vehicle as it goes outward in the vehicle width direction and overlaps with the outer flange portion 18C.

  Three of the inner flange portion 16B of the rail inner panel 16, the inner flange portion 18B of the rail outer reinforcement 18 and the inner flange portion 20B of the side outer panel 20 are overlapped with each other and joined by spot welding or the like. Similarly, the outer flange portion 16C of the rail inner panel 16, the outer flange portion 18C of the rail outer reinforcement 18 and the outer flange portion 20C of the side outer panel 20 are overlapped and joined by spot welding or the like.

  Here, as shown in FIG. 1, the joining wall 24 of the side outer panel 20 includes a standing wall portion 24 </ b> A and an inclined wall portion 24 </ b> B. The standing wall portion 24A is erected from the vehicle width direction outer side end portion of the inner flange portion 20B toward the vehicle upper side, and is inclined upward from the upper end portion of the standing wall portion 24A toward the vehicle width direction outer side. The inclined wall portion 24B is extended.

  An inclined wall 26 is formed on the upper side of the joint wall 24 in the vehicle vertical direction. The inclined wall 26 is inclined upward from the upper end of the inclined wall portion 24B toward the vehicle width direction outer side. The inclined wall 26 is formed so as to stand up from the inclined wall portion 24B, and projects upward from the upper surface 28A of the roof main body portion 28 of the roof panel 12 at both ends of the roof panel 12 in the vehicle width direction.

  The roof panel 12 is formed in a gently curved shape that protrudes upward in the vehicle, and includes a roof main body 28 as a design portion that covers the cabin 50 from the upper side of the vehicle. At both ends in the vehicle width direction of the roof main body portion 28, a bonding wall 30 that faces the bonding wall 24 of the side outer panel 20 and is bonded to the bonding wall 24 is provided over substantially the entire vehicle longitudinal direction. Yes.

  The joining wall 30 includes a curved portion 30A and an inclined wall portion 30B. The curved portion 30A is connected to the roof main body portion 28 and is formed to be bent in a semicircular shape toward the inner side in the vehicle width direction, and the top portion P of the curved portion 30A can be brought into contact with the joining wall 24 of the side outer panel 20. ing. In addition, an inclined wall portion 40 that extends inward in the vehicle width direction is extended from the vehicle vertical direction lower end portion of the curved portion 30A toward the vehicle lower side.

  In a state where the roof panel 12 is placed on the side outer panel 20, the top portion P of the curved portion 30 </ b> A in the joint wall 30 of the roof panel 12 abuts on the inclined wall portion 24 </ b> B in the joint wall 24 of the side outer panel 20 (contact portion). P). The abutting portion P is provided over substantially the entire vehicle longitudinal direction, and on the upper side of the abutting portion P in the vehicle vertical direction, the curved portion 30A of the roof panel 12 and the inclined wall portion 24B of the side outer panel 20 are provided. A gap 32 is provided between them.

  The roof panel 12 is joined and fixed to the side outer panel 20. Here, as a joining method, for example, brazing using a laser, an arc, or the like as a heat source can be cited. Since the clearance 32 is provided between the curved portion 30 </ b> A of the roof panel 12 and the inclined wall portion 24 </ b> B of the side outer panel 20 on the vehicle vertical direction upper side of the contact portion P, the brazing material 34 is placed in the clearance 32. Poured.

  Further, a gap 36 is provided between the inclined wall portion 30B of the roof panel 12 and the inclined wall portion 24B of the side outer panel 20 on the vehicle vertical direction lower side of the contact portion P. In this gap 36, a filler 38 (adhesive, sealer, seal tape, etc.) is interposed as a means for preventing water immersion, and the gap dimension t is about 1 to 2 mm.

(Operation and effect of roof joint structure for vehicles)
Next, operations and effects of the vehicle roof joint structure according to the embodiment of the present invention will be described.

  As shown in FIG. 1, in a state where the roof panel 12 is placed on the side outer panel 20, the top portion P of the curved portion 30 </ b> A in the joint wall 30 of the roof panel 12 is an inclined wall portion in the joint wall 24 of the side outer panel 20. Abuts on 24B (abutment portion P). A gap 32 is provided between the curved portion 30 </ b> A of the roof panel 12 and the inclined wall portion 24 </ b> B of the side outer panel 20 on the upper side in the vehicle vertical direction of the contact portion P. A brazing material 34 is poured into the gap 32, and the roof panel 12 is joined and fixed to the side outer panel 20 by solidifying the brazing material 34.

  In this way, the roof panel 12 is joined and fixed to the side outer panel 20 by brazing, whereby the roof molding can be eliminated and the appearance can be made clear. Further, the cost, the number of parts, and the number of assembling steps can be reduced by not using the roof morse. In addition, the inclined wall 26 of the side outer panel 20 projects upward from the upper surface 28A of the roof main body 28 of the roof panel 12 at both ends of the roof panel 12 in the vehicle width direction. The inclined wall 26 is hidden.

  Here, the roof panel 12 is formed of a metal such as aluminum, an aluminum alloy, or a magnesium alloy, and the roof side rail 14 is formed of a steel plate. In this way, by changing the material of the roof panel 12 from a steel plate to, for example, aluminum, it is possible to reduce the weight of the vehicle 11 and improve the steering stability.

  By the way, when the members formed of different metals are brought into contact with each other, if the contact surfaces of both the members are wet with water or the like, a potential difference is generated between the two members, and either one of the metals may rust. This phenomenon is called so-called dissimilar metal contact corrosion (electrolytic corrosion due to contact between dissimilar metals).

  As shown in FIG. 1, in the abutting portion P where the roof panel 12 abuts on the side outer panel 20, the upper side in the vehicle vertical direction is a design surface of the vehicle 11 and is painted. That is, since the surface of the contact portion P on the upper side in the vehicle vertical direction is covered with the coating liquid, the electrolytic corrosion phenomenon is prevented.

  On the other hand, a clearance 36 is provided between the inclined wall portion 30B of the roof panel 12 and the inclined wall portion 24B of the side outer panel 20 on the vehicle vertical direction lower side of the contact portion P, and a filler is provided in the clearance 36. 38 is interposed. For this reason, it is possible to prevent water generated on the vehicle compartment side of the roof panel 12 from entering the contact portion P due to condensation or the like. Thereby, the electric corrosion phenomenon which arises in the contact part P of the roof panel 12 and the side outer panel 20 is suppressed and prevented, and the corrosion in the said contact part P can be suppressed.

  Here, an adhesive, a sealer, or the like is used as the filler 38, but when an adhesive is used, the bonding strength and the bonding rigidity can be made higher than that of the sealer in a solidified state. Further, the roof panel 12 can be temporarily fixed to the side outer panel 20 using the filler 38 in a state where the roof panel 12 is placed on the side outer panel 20.

  Further, on the vehicle vertical direction lower side of the contact portion P, a gap 36 is provided between the inclined wall portion 30B of the roof panel 12 and the inclined wall portion 24B of the side outer panel 20, but the gap dimension t is 1 to 1. It is about 2 mm. Thereby, it can suppress that the filler 38 does not flow out from the said clearance gap 36 in the electrodeposition tank at the time of vehicle painting.

(Modification of this embodiment)
In the present embodiment, the contact portion P is continuously provided over substantially the entire region in the vehicle front-rear direction, but may be provided intermittently at a predetermined position along the vehicle front-rear direction.

  Further, it is necessary to prevent the filler 38 from flowing out of the gap 36 between the roof panel 12 and the side outer panel 20 in the electrodeposition tank when painting the vehicle. For this reason, the following example is given in addition to setting the gap dimension t between the inclined wall portion 30B of the roof panel 12 and the inclined wall portion 24B of the side outer panel 20.

(1) For example, as shown in FIG. 4, in the joint wall 24 of the side outer panel 20, the length of the standing wall portion 24 </ b> A is extended to be close to the inclined wall portion 30 </ b> B of the roof panel 12 (proximity portion Q). The proximity portion Q and the inclined wall portion 24B are connected by an arc portion 40 that swells in a direction away from the inclined wall portion 30B. Thus, by providing the proximity portion Q, the gap 36 between the roof panel 12 and the side outer panel 20 is narrowed, thereby suppressing the filler 38 from flowing down from the gap 36 between both members. Can be prevented.

  Generally, the gap between the two members should be as narrow as possible in order to prevent the viscous material such as adhesive and sealer filled in the gap between the two members from flowing through the gap. High processing accuracy is required for panels and roof side rails.

  Therefore, as in the present embodiment, the proximity portion Q is provided in the joint wall 24 of the side outer panel 20, and the gap 36 between the roof panel 12 and the side outer panel 20 is partially narrowed, thereby increasing both the members. There is no need to form with processing accuracy. That is, the cost of the roof panel 12 and the side outer panel 20 can be reduced.

  Here, the proximity portion Q is provided in the joint wall 24 of the side outer panel 20, but a proximity portion (not shown) may be provided in the inclined wall portion 30B of the roof panel 12.

(2) Moreover, as FIG. 5 shows, the joint wall 30 of the roof panel 12 is extended to the position which overlaps with the said inner side flange part 20B. Thereby, in the joining wall 30 of the roof panel 12 and the side outer panel 20, the inclination angle of the inclined wall portion 30B becomes gentle toward the inner side in the vehicle width direction, and becomes horizontal at a position overlapping the inner flange portion 20B. Thereby, it can suppress and prevent so that the filler 38 may not flow down from the clearance gap 36 between both members.

(3) In the above embodiment, the gap 36 is formed between the joint wall 30 of the roof panel 12 and the joint wall 24 of the side outer panel 20 on the vehicle vertical direction lower side of the contact portion P of the roof panel 12 and the side outer panel 20. Is set to be provided. For this reason, the filler 38 is interposed in the gap 36. However, in the present invention, it is only necessary that the intrusion of water into the contact portion P can be suppressed. Therefore, the adhesive and the sealer do not necessarily need to be interposed in the gap 36. That is, the presence or absence of the gap 36 is not questioned.

  For example, although not shown, in the joint wall 30 of the roof panel 12, the lower end of the joint wall 30 in the vehicle vertical direction comes into contact (contact part) with the joint wall 24 of the side outer panel 20. An adhesive or a sealer may be applied to the contact portion to close the space between the contact portion and the bonding wall 24.

  Although one embodiment of the present invention has been described above, the present invention is not limited to the above, and various modifications other than the above can be implemented without departing from the spirit of the present invention. Of course.

DESCRIPTION OF SYMBOLS 10 Vehicle roof 11 Vehicle 12 Roof panel 14 Roof side rail 20 Side outer panel (roof side rail)
36 Clearance 38 Filling material (blocking means, flood prevention means)
P Contact part Q Proximity part

Claims (4)

An abutting portion where the roof panel formed of a different metal and the roof side rail abut,
Both members are joined at the vehicle up-down direction upper side of the contact portion, and inundation preventing means for preventing water from entering the contact portion at the vehicle up-down direction lower side of the contact portion;
A roof coupling structure for a vehicle having: A gap is provided between the roof panel and the roof side rail on the vehicle vertical direction lower side in the contact portion,
The vehicle roof coupling structure according to claim 1, wherein the flood prevention means is a closing means that closes the gap.   The roof coupling structure for a vehicle according to claim 2, wherein the closing means is a filler interposed in the gap. The filler is a viscous material;
Formed on one of the roof panel and the roof side rail on the lower side in the vehicle up-down direction at the contact portion, so that the filler does not flow down from the gap between the two members in proximity to the other side. The roof joint structure for vehicles according to claim 3 provided with the proximity part which controls.