JP5418381B2 - Back door structure - Google Patents

Description

  The present invention relates to a vehicle back door structure.

  In a resin back door structure comprising a single-plate inner panel and an outer panel and provided with a back door glass for securing a rear field of view substantially in the center, for example, as disclosed in Patent Document 1, The outer panel is joined with an adhesive.

  On the other hand, a structure in which the left and right ends of the back door glass are extended to the side edges of the back door has been studied from the viewpoint of improving the appearance, but when the back door glass is extended to the left and right ends of the back door, Overlap with the outer panel will occur.

  For this reason, it is required to eliminate the overlapping portion of the outer panel for the purpose of weight reduction. In this case, a cavity is provided at the joint between the inner panel and the outer panel, and the inner panel and the back door glass, and water is passed through the cavity. There is a possibility that dust and dust may enter the room.

Japanese Patent No. 4105519

  An object of this invention is to provide the back door structure which can ensure the sealing performance of a back door, even if it extends a back door glass to the right-and-left end of a back door in view of said point.

The back door structure according to claim 1 is formed of a single resin plate having a window at the center, and an inner panel constituting an inner plate of the back door, and on the vehicle outer side of the inner panel. A resin outer panel disposed and bonded to the vehicle upper side of the inner panel; and a lower outer panel bonded to the vehicle lower side with the window interposed therebetween, and the inner panel A back door glass that is bonded to the outside of the panel and the outer panel of the vehicle and closes the window, and is provided at a position where the inner panel, the outer panel, and the back door glass overlap in the inner panel and the outer panel. possess a labyrinth structure for blocking a passage leading to linearly into the vehicle from outside the vehicle along the width direction, and the in the outer panel I heavy The portion extends in the vehicle vertical direction downward at both ends in the vehicle width direction of the upper outer panel, and the other extension extends in the vehicle vertical direction at both ends in the vehicle width direction of the lower outer panel. It is a piece .

In the back door structure according to the first aspect, the inner panel constituting the inner plate of the back door is formed of a single resin plate, and a window portion is provided at the center. A resin outer panel is disposed outside the inner panel of the vehicle. The outer panel includes an upper outer panel and a lower outer panel, and the upper outer panel and the lower outer panel are disposed with a window portion therebetween. Specifically, the upper outer panel is bonded to the vehicle upper side of the inner panel, and the lower outer panel is bonded to the vehicle lower side of the inner panel. Further, a back door glass is adhered to the outer side of the inner panel and the outer panel to close a window provided on the inner panel.

Here, the outer panel is bonded to the vehicle outer side of the inner panel, and the back door glass is bonded to the vehicle outer side of the inner panel and the outer panel. Adhesives are used for these adhesions, but if there are too many such adhesives, the adhesive protrudes to the surface side of the back door glass, and a separate operation for removing the adhesives will occur.

  On the other hand, due to dimensional tolerances, the inner panel, outer panel, and the like have manufacturing variations in their plate thickness and outer dimensions. For this reason, considering this variation and setting the amount of the adhesive so that the adhesive does not protrude from the surface side of the back door glass, depending on the variation, the adhesive of the inner panel and the outer panel, the inner panel and the back There may be a case where a gap is generated between the door glass adhesive. In this case, the outer side and the inner side of the vehicle communicate with each other through the gap, and there is a concern about water intrusion into the room.

  For this reason, in the present invention, a labyrinth structure is provided at the position of the inner panel, the outer panel (upper outer panel or lower outer panel) and the back door glass in the inner panel and the outer panel. A passage that linearly connects from the outside of the vehicle to the inside of the vehicle along the width direction is blocked.

  Thereby, it is possible to prevent or suppress water (dust) that has entered from the outside in the vehicle width direction of the inner panel and the outer panel from flowing into the room. That is, even if the application range of the adhesive varies, a structure in which water does not leak can be obtained.

In other words, the amount of the adhesive can be set so that the adhesive does not protrude to the surface side of the back door glass, the finishing process for removing the adhesive from the surface of the back door glass, the inner panel, the outer panel, and the back panel. It is not necessary to perform a sticking tape sticking operation to fill a gap generated in the overlapping portion of the door glass, and the number of work steps can be reduced.
Here, the overlapping portion of the outer panel extends to the vehicle vertical direction lower side of the upper outer panel at both ends in the vehicle width direction, and extends to the vehicle vertical direction upper side of the lower outer panel at both ends of the vehicle width direction. It is another extension piece to do. For this reason, the extension piece, the inner panel, and the back door glass overlap each other extension piece, the inner panel, and the back door glass.

  The back door structure according to claim 2 is the back door structure according to claim 1, wherein the labyrinth structure includes a first rib provided on one of the inner panel and the outer panel, the inner panel, and the outer panel. And a second rib disposed so as to overlap a part of the first rib when viewed from the vehicle width direction.

  In the back door structure according to claim 2, the labyrinth structure includes a first rib provided on the inner panel (or outer panel) and a second rib provided on the outer panel (or inner panel). The first ribs and the second ribs are arranged so that they overlap each other when viewed from the vehicle width direction.

  In the present invention, a labyrinth structure is formed by forming ribs on the inner panel and the outer panel, respectively, so that the parts overlap each other when viewed from the vehicle width direction. For this reason, a shape can be simplified compared with the case where a maze structure is formed in an inner panel or an outer panel. Thereby, the moldability of the inner panel or the outer panel can be improved, and the mold processing cost can be reduced.

  The back door structure according to claim 3 is the back door structure according to claim 2, wherein the first rib and the second rib include an inclined wall portion that goes downward in the vehicle width as going outward in the vehicle width direction. ing.

  In the back door structure according to claim 3, by providing the first rib and the second rib with an inclined wall portion that goes downward in the vehicle as it goes outward in the vehicle width direction, the water that has entered from the outer side in the vehicle width direction The vehicle can be guided downwardly outside the vehicle along the inclined wall portion.

  The back door structure according to claim 4 is the back door structure according to claim 2 or 3, wherein at least one of the first rib and the second rib extends in the vehicle vertical direction. Department.

  In the back door structure according to claim 4, at least one of the first rib and the second rib includes a vertical wall portion extending along the vehicle vertical direction, so that water that has entered from the outside in the vehicle width direction can be obtained. It is possible to prevent or suppress the flow to the indoor side, and to guide the water that has reached the vertical wall portion to the vehicle lower side along the vertical wall portion.

The back door structure according to claim 5 is the back door structure according to claim 4, wherein the first rib and the second rib are provided with a plurality of inclined wall portions that go downward in the vehicle width direction as they go outward in the vehicle width direction. One end of the inclined wall portion of the first rib or the second rib on the inner side in the vehicle width direction is bridged by a vertical wall portion extending along the vehicle vertical direction .

In the back door structure according to claim 5, the first rib and the second rib are each provided with a plurality of inclined wall portions that go downward in the vehicle width direction, and the inclined wall portion of the first rib or the second rib. One end on the inner side in the vehicle width direction is bridged by a vertical wall. As a result, the water that has entered from the outside in the vehicle width direction can be guided to the vehicle outer side along the inclined wall portion, and the water that has reached the vertical wall portion can be guided to the vehicle lower side along the vertical wall portion. The water that has entered from the outside in the vehicle width direction can be prevented or suppressed from flowing into the indoor side.

A back door structure according to a sixth aspect is the back door structure according to any one of the second to fifth aspects, wherein the first door and the second rib extend vertically along the vehicle vertical direction. A plurality of wall portions are provided, and an inclined wall portion is provided at the lower end portion of the vertical wall portion so as to go downward in the vehicle as it goes outward in the vehicle width direction .

In the back door structure according to claim 6, the first rib and the second rib are provided with a plurality of vertical wall portions extending along the vehicle vertical direction, and the inclined wall portion is provided at the lower end portion of the vertical wall portion. Yes. According to this, it can prevent or suppress that the water which infiltrated from the vehicle width direction outer side flows into an indoor side with the some vertical wall part provided in the 1st rib and the 2nd rib. When water that has entered from the outside in the vehicle width direction reaches the vertical wall portion, the water that has reached the vertical wall portion is guided to the vehicle lower side along the vertical wall portion, and then the vehicle lower side as it goes outward in the vehicle width direction. guiding the vehicle outward and downward along the inclined wall portion toward.

  As described above, the back door structure according to claim 1 has an excellent effect that the sealing performance of the back door can be secured even if the back door glass is extended to the left and right ends of the back door.

  The back door structure according to claim 2 has an excellent effect that the processing efficiency of the inner panel and the outer panel can be amortized in a short period because the production efficiency is improved.

  The back door structure according to claim 3 has an excellent effect that water that has entered from the outside in the vehicle width direction can be guided to the lower side outside the vehicle with a simple configuration.

  The back door structure according to claim 4 has an excellent effect that water that has entered from the outside in the vehicle width direction can be prevented or suppressed from flowing to the indoor side with a simple configuration.

  The back door structure according to claim 5 has a simple configuration, guides water that has entered from the outside in the vehicle width direction downward to the outside of the vehicle, and prevents water that has entered from the outside in the vehicle width direction from flowing into the indoor side. It has an excellent effect that it can be suppressed.

  The back door structure according to claim 6 has a simple configuration and prevents or suppresses the water that has entered from the outside in the vehicle width direction from flowing into the room interior, and the water that has entered from the outside in the vehicle width direction to the lower outside of the vehicle. It has an excellent effect of guiding.

It is a disassembled perspective view of the back door which concerns on this Embodiment. It is a disassembled perspective view which shows the principal part of the back door which concerns on this Embodiment. It is a perspective view which shows the principal part of the back door which concerns on this Embodiment. It is a principal part enlarged plan view of the back door which concerns on this Embodiment. It is the sectional view on the AA line of FIG. It is sectional drawing corresponding to FIG. 5 for demonstrating the effect | action of this Embodiment. It is CC sectional view taken on the line of FIG. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a principal part enlarged view which shows the modification of an inner rib and an outer rib.

  The back door structure which concerns on embodiment of this invention is demonstrated based on FIGS. In the figure, the arrow FR indicates the forward direction in the vehicle longitudinal direction, the arrow UP indicates the upward direction in the vehicle vertical direction, and the arrow OUT indicates the vehicle width direction outside. Although not shown, the vehicle of the present embodiment is provided with a back door 10 for opening and closing an opening that opens backward in the vehicle body front-rear direction. The back door 10 is provided with a hinge portion (not shown) on the inner side of the upper end portion, and the opening portion opened toward the rear of the vehicle can be opened and closed by rotating the back door 10 around the hinge portion. It is said that.

(Backdoor configuration)
Here, the structure of the back door which concerns on embodiment of this invention is demonstrated.

  FIG. 1 is an exploded perspective view of the back door 10. The back door 10 according to the present embodiment includes a door inner panel 12, a door outer panel 14, and a back door glass 16. The door inner panel 12 is formed of a single plate-like resin having a substantially rectangular shape, and a substantially rectangular window portion 18 is formed at the upper center. The window portion 18 is closed by a back door glass 16 formed in a rectangular shape.

  On the other hand, the door outer panel 14 is divided into an upper door outer panel 20 and a lower door outer panel 22 with the window 18 of the door inner panel 12 therebetween, and each is formed of a plate-like resin.

  The upper door outer panel 20 has a shape that covers the upper portion of the door inner panel 12 corresponding to the shape of the upper portion of the door inner panel 12, and extends at both ends of the upper door outer panel 20 downward in the vehicle. An extending piece 24 is provided. As shown in FIG. 5 (which is a cross-sectional view taken along line AA in FIG. 4) including the extended piece 24, the upper door outer panel 20 is bonded and fixed to the door inner panel 12 via an adhesive 26. Yes.

  Further, as shown in FIG. 1, the lower door outer panel 22 is configured to cover the lower portion of the door inner panel 12 corresponding to the shape of the lower portion of the door inner panel 12, similarly to the upper door outer panel 20. At both ends of the door outer panel 22, extending pieces 28 that extend in the vehicle upward direction are provided. Although not shown, including the extended piece 28, the lower door outer panel 22 is bonded and fixed to the door inner panel 12 via an adhesive 26 as in the case of the upper door outer panel 20. In the following description, the description of the lower door outer panel 22 among the upper door outer panel 20 and the lower door outer panel 22 is omitted.

  A gap is provided between the extension piece 28 and the extension piece 24, and the door inner panel 12 is exposed to the outside during this interval. For this reason, the upper door outer panel 20, the lower door outer panel 22, and the side portion 13 of the door inner panel 12 are exposed at the periphery of the window 18 of the door inner panel 12 when viewed from the outside of the vehicle. Further, as shown in FIG. 5, the back door glass 16 is bonded and fixed to these exposed portions corresponding to the peripheral edge portion of the window portion 18 through an adhesive 30.

  Specifically, in the side portion 13 of the door inner panel 12, as shown in FIG. 8 (end view taken along the line BB in FIG. 3), the side portion 13 has a substantially U-shaped cross section. In addition, flange portions 13A that extend outward along the vehicle width direction are provided at both ends of the side portion 13, respectively. An adhesive 30 is applied to the flange portion 13 </ b> A, and the back door glass 16 is bonded and fixed via the adhesive 30.

  As described above, the flange portion 13A is provided on the side portion 13 of the door inner panel 12, and the back door glass 16 is fixed to the flange portion 13A, so that the space between the side portion 13 of the door inner panel 12 and the back door glass 16 is increased. Thus, a closed cross section is formed. Thereby, in the side part 13 of the door inner panel 12, intensity | strength and rigidity can be obtained. In addition, in order to reinforce the side part 13 of the door inner panel 12, you may arrange | position steel reinforcement in this closed cross section.

  On the other hand, from the viewpoint of aerodynamics or design, as shown in FIG. 5, it is preferable that the surface of the back door glass 16 does not protrude from the surfaces of the upper door outer panel 20 and the door inner panel 12. For this reason, the extended piece 24 has a substantially L-shaped cross section, and a standing wall 32 is provided at the base of the extended piece 24 of the upper door outer panel 20. The height of the standing wall 32 is set to be equal to or greater than the thickness of the adhesive 30 and the back door glass 16, and is arranged at a position where the free end side of the extending piece 24 is lowered one step toward the vehicle interior.

  Along with the shape of the upper door outer panel 20, a standing wall 34 is provided at a position corresponding to the standing wall 32 of the upper door outer panel 20 on the door inner panel 12 side, and a recess 36 in which the extension piece 24 is accommodated. Is recessed. The upper door outer panel 20 is fixed to the door inner panel 12 via the adhesive 26 in a state where the extended piece 24 is accommodated in the recess 36. The depth of the recess 36 is set so that the surface of the extension piece 24 and the surface of the side portion 13 of the door inner panel 12 are substantially flush with the extension piece 24 fixed in the recess 36. Is set.

  On the other hand, the outer edge rib 12A which protrudes toward the vehicle outer side is formed on the outer edge portion of the door inner panel 12 over the entire circumference, and the surface of the back door glass 16 is fixed in a state where the back door glass 16 is fixed. It is set so as to be substantially flush with each other, and in a state where the back door 10 is opened, the adhesives 26, 30 and the like are not visible from the side of the back door 10, and the aesthetic appearance of the back door 10 is impaired. I try not to.

  Here, as shown in FIGS. 2 to 4 (FIGS. 2 and 3 show the A part of FIG. 1, and FIG. 4 further enlarges the main part), the door inner panel 12 Inner ribs (first ribs) 38 that protrude from the recesses 36 to the outer sides of the recesses 36 that are the side portions 13 of the door inner panel 12 are provided.

  The inner rib 38 includes a plurality of (in this case, three) inclined wall portions 40, 42, 44 that go downward in the vehicle width direction toward the outer side in the vehicle width direction, and the vehicle width of the inclined wall portions 40, 42, 44. One end portion on the inner side in the direction is bridged by a vertical wall portion 46 extending along the vehicle vertical direction. The lower end portion of the vertical wall portion 46 is connected to one end portion of the inclined wall portion 44 located in the lower stage of the vehicle vertical direction, and the upper end portion of the vertical wall portion 46 is connected to the upper end of the inclined wall portion 40 located in the upper stage of the vehicle vertical direction. Projects from one end.

  On the other hand, the extended piece 24 of the upper door outer panel 20 is provided with an outer rib (second rib) 48 that protrudes toward the vehicle inner side, and the outer rib 48 moves downward in the vehicle as it goes outward in the vehicle width direction. It is composed of a plurality of (in this case, two) inclined wall portions 50 and 52 facing each other.

  3 and 4, the inclined wall portion 50 of the outer rib 48 has the inclined wall portion 40 and the inclined wall portion 42 of the inner rib 38 in a state where the upper door outer panel 20 is bonded to the door inner panel 12. The inclined wall portion 52 of the outer rib 48 is disposed between the inclined wall portion 42 and the inclined wall portion 44 of the inner rib 38.

  That is, the outer ribs 48 and the inner ribs 38 are alternately arranged in the vehicle vertical direction, and as shown in FIG. 5, a part of the outer ribs 48 and a part of the inner ribs 38 are overlapped when viewed from the vehicle width direction ( Here, the inclined wall portions 40, 42, and 44 of the inner rib 38 are not shown), and the passage that linearly connects from the outside of the vehicle to the inside of the vehicle along the vehicle width direction is blocked (so-called maze structure 54). .

(Operation and effect of back door)
Next, functions and effects of the back door according to the embodiment of the present invention will be described.

  As shown in FIG. 5, the overlapping portion of the door inner panel 12, the extended portion 24 of the upper door outer panel 20 (not shown, but the extended portion 28 of the lower door outer panel 22 is the same) and the back door glass 16. , A maze structure 54 is provided (described later).

  As shown in FIG. 6 (a sectional view corresponding to FIG. 5 for explaining the operation of this embodiment), the door outer panel 14 is bonded (adhesive 26) to the vehicle outer side of the door inner panel 12. The back door glass 16 is bonded (adhesive 30) to the vehicle outer side of the door inner panel 12 or the door outer panel 14.

  Adhesives 26 and 30 are used for these adhesions. However, if there are too many adhesives 26 and 30, the adhesives 26 and 30 protrude from the surface side of the back door glass 16, and the solidified adhesives 26 and 30. The operation | work which removes the said adhesive agents 26 and 30, such as scraping off, will generate | occur | produce separately.

  On the other hand, since the door inner panel 12 and the door outer panel 14 are made of resin, the dimensional tolerance is larger than when the door inner panel 12 and the door outer panel 14 are made of metal. Due to this dimensional tolerance, variations in manufacturing occur in the plate thickness and outer dimensions of the door inner panel 12 and the door outer panel 14. For this reason, in consideration of this variation, the amounts of the adhesives 26 and 30 are set so that the adhesives 26 and 30 do not protrude from the surface side of the back door glass 16.

  For example, the amount of the adhesives 26 and 30 in the case where the door inner panel 12 and the door outer panel 14 whose dimensions are plus tolerance side are used is set. For this reason, when the door inner panel 12 and the door outer panel 14 whose dimensions are on the minus tolerance side are used, the amount of the adhesives 26 and 30 is insufficient. In this case, between the door inner panel 12 and the adhesive 26 of the upper door outer panel 20, and the door inner panel 12 and the adhesive 30 of the back door glass 16, there is a hollow portion 56 that communicates the inside of the vehicle and the outside of the vehicle. There is a concern that water will enter the room.

  Therefore, in the present embodiment, as described above, the maze structure 54 is provided in the overlapping portion of the door inner panel 12, the extended portion 24 of the upper door outer panel 20, and the back door glass 16 shown in FIG. 5.

  Specifically, as shown in FIGS. 2 and 4, an inner rib 38 that protrudes toward the vehicle outer side is provided from the recessed portion 36 of the door inner panel 12 to the side portion 13 of the door inner panel 12. 38 is extended along the vehicle vertical direction on the inclined wall portions 40, 42, 44 that go downward in the vehicle as it goes outward in the vehicle width direction, and one end portion on the inner side in the vehicle width direction of the inclined wall portions 40, 42, 44. And a passed vertical wall portion 46.

  On the other hand, the extended piece 24 of the upper door outer panel 20 is provided with an outer rib 48 that protrudes toward the vehicle inner side, and the outer rib 48 is inclined by the inclined wall portions 50 and 52 that go downward in the vehicle width as it goes outward in the vehicle width direction. It is composed.

  In this way, by providing the inner rib 38 and the outer rib 48 with the inclined wall portions 40, 42, 44, 50, 52 that go downward in the vehicle as they go outward in the vehicle width direction, as shown in FIG. Even if water intrudes from between the outer edge rib 12A of the inner panel 12 and the outer edge portion of the door outer panel 14, as shown in FIG. 4, the inclined wall portions 40, 42, 44, 50, 52 Is guided toward the outside of the vehicle.

  Moreover, the outer edge rib 12A of the door inner panel 12 and the door outer panel 14 are bridged over the vertical wall portion 46 along the vehicle vertical direction on one end portion of the inclined wall portions 40, 42, 44 of the inner rib 38 on the inner side in the vehicle width direction. Even if the water infiltrated from between the outer edges of the water flows to one end side of the inclined wall portions 40, 42, 44, 50, 52, the flow is restricted by the vertical wall portion 46, and the vertical wall The water that has reached the portion 46 can be guided downward along the vertical wall portion 46.

  Further, in a state where the upper door outer panel 20 is bonded to the door inner panel 12, the vertical wall portion 46 of the inner rib 38 is disposed on the vehicle inner side of the inclined wall portions 50 and 52 of the outer rib 48, and the inclined wall portion 50 of the outer rib 48. Is arranged between the inclined wall portion 40 and the inclined wall portion 42 of the inner rib 38, and the inclined wall portion 52 of the outer rib 48 is arranged between the inclined wall portion 42 and the inclined wall portion 44 of the inner rib 38.

  Thus, in the overlapping part of the extension part 28 of the upper door outer panel 20 of the door inner panel 12 and the back door glass 16, the inclined wall parts 40, 42, 44 of the inner rib 38 and the inclined wall parts 50, 52 of the outer rib 48, However, they are alternately arranged along the vehicle vertical direction. As seen from the vehicle width direction, adjacent inclined wall portions partially overlap each other, and the inclined wall portions 40, 42, 50, 52 and the vertical wall portion 46 of the inner rib 38 overlap each other.

  4 and 6, the vertical wall portion 46 of the inner rib 38, the inclined wall portions 42 and 44, and the inclined wall portion 52 of the outer rib 48 are formed in the cavity portion 56 shown in FIGS. 4 and 6. (The number of corresponding inclined wall portions varies depending on the size of the cavity portion 56).

  Therefore, even if the amount of the adhesives 26 and 30 is small and the hollow portion 56 is provided between the door inner panel 12 and the door outer panel 14, the inclined wall portions 40, 42, and 42 of the inner rib 38 shown in FIG. 44, the inclined wall portions 50 and 52 of the vertical wall portion 46 and the outer rib 48 cut off the passage linearly connected from the outside of the vehicle to the inside of the vehicle along the vehicle width direction, and the hollow portion 56 does not substantially exist.

  That is, by providing such a maze structure 54, water (dust) that has entered from the gap (outside in the vehicle width direction) between the door inner panel 12 and the upper door outer panel 20 is prevented or suppressed from flowing into the room. Can do. That is, even if the application ranges of the adhesives 26 and 30 vary, a structure that does not leak water can be obtained, and even if the back door glass 16 is extended to the left and right ends of the back door 10, the sealing performance of the back door 10 is ensured. be able to.

  In other words, the amount of the adhesives 26 and 30 can be set so that the adhesives 26 and 30 do not protrude from the surface side of the back door glass 16, and the adhesives 26 and 30 are removed from the surface of the back door glass 16. It is not necessary to perform the finishing process to be removed, or to apply a seal tape for filling a gap formed in the overlapping portion of the door inner panel 12, the upper door outer panel 20, and the back door glass 16, and the number of work steps can be reduced.

  Here, as the maze structure 54, the inclined ribs 40, 42, 44 and the vertical wall 46 are provided on the inner rib 38, but either the inclined wall or vertical wall may be provided. In this case, the number of vertical wall portions and the angle of the inclined wall portions are appropriately changed. Further, here, an inner rib 38 constituted by inclined wall portions 40, 42, 44 and a vertical wall portion 46 is provided on the door inner panel 12 side, and an outer rib constituted by inclined wall portions 50, 52 on the door outer panel 14 side. 48, the rib on the door inner panel 12 side is constituted by the inclined wall portions 50, 52, and the rib on the door outer panel 14 side is constituted by the inclined wall portions 40, 42, 44 and the vertical wall portion 46. Of course.

(Other embodiments)
In the above embodiment, as shown in FIG. 4, the inner rib 38 and the outer rib 48 have completely different shapes, but in this embodiment, as shown in FIG. 9, the shapes of the inner rib 60 and the outer rib 62. Are similar.

  That is, the inner rib 60 has a pair of vertical wall portions 64 extending along the vehicle vertical direction, and the lower end portion of the vertical wall portion 64 is inclined downward toward the vehicle as it goes outward in the vehicle width direction. A wall 68 is provided. Further, the outer rib 62 has a pair of vertical wall portions 66 extending in the vehicle vertical direction, and the lower end portion of the vertical wall portion 66 is inclined downward toward the vehicle as it goes outward in the vehicle width direction. A wall 70 is provided. The vertical wall portions 64 and 66 and the inclined wall portions 68 and 70 are alternately arranged along the vehicle width direction so that a part thereof overlaps with each other when viewed from the vehicle width direction.

  Accordingly, the plurality of vertical wall portions 64 and 66 provided on the inner rib 60 and the outer rib 62 can prevent or suppress the water that has entered from the outside in the vehicle width direction from flowing into the indoor side. Further, when water that has entered from the outside in the vehicle width direction reaches the vertical wall portions 64 and 66, the water guides downward along the vertical wall portion, and then guides downward along the inclined wall portions 68 and 70 toward the outside of the vehicle. Is done. That is, with a simple configuration, it is possible to prevent or suppress the water that has entered from the outside in the vehicle width direction from flowing into the indoor side, and to guide the water that has entered from the outside in the vehicle width direction to the lower outside of the vehicle.

10 Back door 12 Door inner panel (inner panel)
14 Door outer panel (outer panel)
16 Back door glass 20 Upper door outer panel (outer panel)
22 Lower door outer panel (outer panel)
38 Inner rib (1st rib, labyrinth structure)
40 Inclined wall portion 42 Inclined wall portion 44 Inclined wall portion 46 Vertical wall portion 48 Outer rib (second rib, maze structure)
50 Inclined wall portion 52 Inclined wall portion 54 Maze structure 60 Inner rib (first rib, maze structure)
62 Outer rib (second rib, maze structure)
64 Vertical wall portion 66 Vertical wall portion 68 Inclined wall portion 70 Inclined wall portion

Claims (6)

An inner panel formed of a single resin plate having a window at the center, and constituting the inner plate of the back door;
A resin that is disposed outside the inner panel of the vehicle and includes an upper outer panel that is bonded to the vehicle upper side of the inner panel, and a lower outer panel that is bonded to the vehicle lower side with the window portion interposed therebetween. An outer panel made of,
A back door glass that is bonded to the outside of the inner panel and the outer panel and closes the window;
A labyrinth structure that is provided at a position where the inner panel, the outer panel, and the back door glass overlap in the inner panel and the outer panel, and that blocks a passage that is linearly connected from the outside of the vehicle to the inside of the vehicle along the vehicle width direction;
I have a,
The overlapping portion of the outer panel extends to the vehicle vertical direction lower side of the upper outer panel at both ends in the vehicle width direction, and extends to the vehicle vertical direction upper side of the lower outer panel at both ends of the vehicle width direction. Back door structure that is another extended piece to be put out . The maze structure is
A first rib provided on one of the inner panel and the outer panel;
A second rib provided on the other of the inner panel and the outer panel and disposed so as to overlap a part of the first rib as viewed from the vehicle width direction;
The back door structure according to claim 1, comprising:   The back door structure according to claim 2, wherein the first rib and the second rib include an inclined wall portion that goes downward in the vehicle as it goes outward in the vehicle width direction.   The back door structure according to claim 2 or 3, wherein at least one of the first rib and the second rib includes a vertical wall portion extending along the vehicle vertical direction. The first rib and the second rib are provided with a plurality of inclined wall portions that go downward in the vehicle as they go outward in the vehicle width direction, and one end portion on the vehicle width direction inner side of the inclined wall portion of the first rib or the second rib. The back door structure according to claim 4, which is bridged by the vertical wall portion. A plurality of vertical wall portions extending along the vehicle vertical direction are provided on the first rib and the second rib, and an inclined wall that goes downward in the vehicle width toward the outer side in the vehicle width direction at the lower end portion of the vertical wall portion The back door structure according to any one of claims 2 to 5, wherein a portion is provided.

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