JP2015171896A - Vehicle resin door structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle resin door structure capable of preventing or suppressing the occurrence of peel-off of a seal due to insufficient filling of adhesive at a time of adhesively bonding a bonding portion for bonding an inner panel to an outer panel by the adhesive.SOLUTION: A back door 10 comprises: an outer upper part 12 and an outer lower part 14 serving as an outer panel disposed outside of a vehicle; and a resin inner panel 16 disposed inside of the vehicle. In a bonding portion 30 bonding the outer upper part 12 and the outer lower part 14 to the inner panel 16 by adhesive 80, bent portions 36 and 38 cranked from respective panel surfaces of the outer upper part 12 and the inner panel 16 are provided. A rib 40 is formed in at least a panel surface 17C-side corner of a bottom of the bent portion 38 of the inner panel 16 to which the adhesive 80 is applied so as to rise from a surface of the corner.

Description

The present invention relates to a vehicle resin door structure.

  The following Patent Document 1 discloses a resin back door structure in which a resin inner panel and an outer panel are bonded using an adhesive such as urethane.

JP 2011-136606 A

  However, in the resin back door structure of Patent Document 1, for example, if there is a concave portion that is greatly recessed on the inner side of the vehicle on the adhesive application surface of the inner panel, the adhesive is applied to the bottom of the concave portion when the adhesive is applied. It may not arrive. Therefore, when the joining surface of the outer panel is overlapped with the concave portion of the inner panel, a phenomenon of cutting off the adhesive on the near side of the bottom of the concave portion occurs, which causes a seal failure.

  In view of the above facts, the present invention provides a vehicle resin door structure capable of preventing or suppressing the occurrence of a seal break due to insufficient filling of the adhesive when the inner panel and the outer panel are bonded with an adhesive. Is the purpose.

  According to a first aspect of the present invention, there is provided a vehicular resin door structure including an outer panel disposed outside a vehicle compartment of the vehicle door, a resin inner panel disposed on the vehicle interior side of the outer panel, the outer panel, and the inner panel. A bent portion that is provided in a bonding portion for bonding the panel with an adhesive, bends in a crank shape from the panel surface of the outer panel and the inner panel, and the bent portion on the panel surface side to which the adhesive is applied. And ribs that are formed at least at the corners on the panel surface side of the bottom and rise from the surface of the corners.

  According to a second aspect of the present invention, in the resin door structure for a vehicle according to the first aspect, at least a part of the rib is along a direction in which the joint portion of the outer panel and the joint portion of the inner panel are relatively pressed. It is formed on the surface of the arranged bent portion.

  According to a third aspect of the present invention, in the resin door structure for a vehicle according to the first or second aspect, the adhesive is applied to a joint portion of the inner panel, and the corner portion on the panel surface side of the bottom portion is The inner panel is a concave portion that is recessed toward the vehicle interior side.

  According to the first aspect of the present invention, the joint portion that joins the outer panel and the resin inner panel with the adhesive is provided with a bent portion that bends in a crank shape from the panel surface of the outer panel and the inner panel. . Ribs that stand from the surface of the corner are formed at least at the corner on the panel surface side of the bent portion on the panel surface side where the adhesive is applied. As a result, the adhesive is applied to one of the outer panel joint or the inner panel joint, and the adhesive is applied when the outer panel joint and the inner panel joint are pressed and joined relatively. Since the ribs are formed at the corners on the panel surface side at the bottom of the bent portion on the panel surface side, the ribs bite into the adhesive. Thereby, generation | occurrence | production of the seal | sticker breakage by the insufficient filling of the adhesive agent in the corner | angular part by the side of the panel surface of the bottom part of a bending part can be prevented or suppressed.

  According to the second aspect of the present invention, at least a part of the rib is formed on the surface of the bent portion disposed along the direction in which the joint portion of the outer panel and the joint portion of the inner panel are relatively pressed. Yes. When one of the outer panel joint or the inner panel joint is moved in the pressing direction, the adhesive applied to the surface of the bent portion arranged along the pressing direction is applied by the other panel bonding. Although it is easy to be scraped off, the ribs bite into the adhesive because they are formed on the surface of the bent portion. Thereby, the bent part of an outer panel and an inner panel can be sealed more reliably.

  According to the third aspect of the present invention, the corner portion on the panel surface side of the bottom portion is a concave portion in which the inner panel is recessed toward the vehicle interior side, and the adhesive is applied to the joint portion of the inner panel. As a result, when the outer panel joint is pressed against the inner panel joint, the ribs formed at the corners on the panel surface side of at least the bottom of the bent part bite into the adhesive. For this reason, generation | occurrence | production of the seal | sticker cutting | disconnection by insufficient filling of the adhesive agent in the corner | angular part by the side of the panel surface of the bottom part of a bending part can be prevented or suppressed.

  According to the resin door structure for a vehicle according to the present invention, when the inner panel and the outer panel are bonded to each other with an adhesive, it is possible to prevent or suppress the occurrence of a seal failure due to insufficient filling of the adhesive.

It is a rear view which shows the resin back door to which the resin door structure for vehicles which concerns on one Embodiment was applied. It is a disassembled perspective view shown in the state except the rear window glass of the resin back door shown in FIG. It is a perspective view which shows the application part of the adhesive agent of the inner panel to which the outer upper and outer lower shown in FIG. 2 are joined. It is sectional drawing which shows the application part of the adhesive agent of the inner panel to which the outer upper and outer lower shown in FIG. 2 are joined. FIG. 3 is a rear view of a single inner panel shown in FIG. 2. It is a perspective view which shows the bending part formed in the junction part of the vehicle width direction outer side upper part of an inner panel. It is sectional drawing which shows the junction part of the inner panel and outer panel which followed the 2-2 line in FIG. It is sectional drawing which shows the junction part of the inner panel and outer panel which followed the 3-3 line in FIG. It is a perspective view which shows the bending part formed in the junction part of the vehicle up-down direction intermediate part of the vehicle width direction outer side of an inner panel. It is sectional drawing which shows the junction part of the inner panel and outer panel along line 4-4 in FIG. It is sectional drawing which shows the junction part of the inner panel and outer panel which followed the 5-5 line in FIG. It is a perspective view which shows the bending part formed in the junction part of the vehicle lower part side of the vehicle width direction center part of an inner panel. It is sectional drawing which shows the junction part of the inner panel and outer panel which followed the 6-6 line in FIG. It is an expanded sectional view which shows the bending part vicinity of the inner panel shown in FIG. 13, Comprising: It is a figure which shows the state before joining an outer panel. (A) is sectional drawing which shows the state which joins an outer panel to the bending part in the vehicle width direction outer side upper part of the inner panel of a comparative example, (B) is a vehicle outside the vehicle width direction of the inner panel of a comparative example. It is sectional drawing which shows the state which joins an outer panel to the bending part in an up-down direction intermediate part, (C) joins an outer panel to the bending part in the vehicle lower part side of the vehicle width direction center part of the inner panel of a comparative example. It is sectional drawing which shows a state. (A), (B) is sectional drawing which shows the process of joining an outer panel to the bending part in the vehicle up-down direction intermediate part of the vehicle width direction outer side of the inner panel of a comparative example.

  Hereinafter, an embodiment of a resin door structure for a vehicle according to the present invention will be described with reference to FIGS. Note that an arrow RR appropriately shown in these drawings indicates the vehicle rear side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  FIG. 1 shows a back door 10 to which a vehicular resin back door structure as an example of a vehicular resin door structure is applied. FIG. 2 is an exploded perspective view of the back door 10 shown in FIG. 1 with the rear window glass removed. A substantially rectangular back door opening (not shown) is provided at the rear end of the vehicle body (not shown), and the back door opening is opened and closed by the back door 10 shown in FIG. The back door 10 is supported at its upper end by a hinge (not shown) at the rear end of the vehicle body so as to be opened and closed.

  As shown in FIGS. 1 and 2, the back door 10 includes an outer upper 12 as an example of an outer panel disposed on the upper side outside the passenger compartment, and an example of an outer panel disposed on the lower side outside the passenger compartment. The outer lower 14 and the resin inner panel 16 disposed on the inner side of the outer upper 12 and the outer lower 14 are provided. In other words, the outer upper 12 is disposed on the vehicle longitudinal direction rear side on the upper side of the inner panel 16, and the outer lower 14 is disposed on the vehicle longitudinal direction rear side on the lower side of the inner panel 16. In the present embodiment, the outer upper 12 and the outer lower 14 are formed of resin panels.

  As shown in FIG. 2, on both sides of the back door 10 in the vehicle width direction, a hinge reinforcement 18 made of metal (for example, a steel plate) is disposed between the outer upper 12 and the outer lower 14 and the inner panel 16 along the vertical direction of the vehicle. It is installed. The hinge reinforcement 18 is formed in a substantially inverted L shape when viewed from the rear of the vehicle, and is disposed symmetrically. A hinge (not shown) that supports the back door 10 to be openable and closable at the rear end portion of the vehicle body (not shown) is attached to the upper portion of the hinge reinforcement 18. The hinge reinforcement 18 is fastened and fixed to the inner panel 16 by a fastener (not shown).

  An opening 22 is provided on the upper side of the inner panel 16. A rear window glass 20 (see FIG. 1) is attached to the back door 10 so as to cover the opening 22.

  As shown in FIGS. 3 and 4, the joint between the inner panel 16 and the outer upper 12 and the joint between the inner panel 16 and the outer lower 14 are joined together by an adhesive 80 such as polyurethane. More specifically, the adhesive 80 is applied along the upper peripheral edge portion (joint portion) 16A of the inner panel 16, and is adhered along the upper edge portion (joint portion) 16B of the opening 22 of the inner panel 16. Agent 80 is applied. In this state, the outer upper 12 is set (pressed) in the diagonally downward direction indicated by the arrow A on the inner panel 16 so that the upper peripheral edge (joining part) 12A and the lower peripheral edge (joining part) 12B of the outer upper 12 are formed. The upper edge 16 </ b> A of the inner panel 16 and the upper edge 16 </ b> B of the opening 22 are joined by an adhesive 80.

  Further, the adhesive 80 is applied along the lower edge (joint) 16C of the opening 22 of the inner panel 16, and the adhesive 80 is applied along the lower peripheral edge (joint) 16D of the inner panel 16. Further, the adhesive 80 is applied in a loop shape to the center portion (joint portion) 16E of the inner panel 16 in the vehicle width direction. In this state, the outer lower 14 is set (pressed) on the inner panel 16 in the lateral direction indicated by the arrow B, so that the upper end portion (joining portion) 14A, the lower peripheral edge portion (joining portion) 14B and the center of the outer lower 14 are arranged. The parts (joining parts) 14C are joined to the lower edge part 16C, the lower peripheral edge part 16D and the protruding part 16E of the opening 22 of the inner panel 16 by the adhesive 80, respectively.

  6 to 8 show a joint portion 30 between the outer upper 12 and the inner panel 16 at the upper portion of the back door 10 in the vehicle width direction (see FIG. 5). As shown in FIGS. 5, 6, and 8, the outer upper 12 and the inner panel 16 on the outer side (upper side) of the outer upper 12 and the inner panel 16 are connected to the joint portion 30 between the outer upper 12 and the inner panel 16 at the upper portion of the back door 10 in the vehicle width direction. ) Are bent from the panel surfaces 13A and 17A to the inside of the vehicle in a crank shape. More specifically, the bent portion 36 of the outer upper 12 includes a wall portion 13B extending from the upper panel surface 13A toward the vehicle front obliquely lower side in the vehicle side view, and a vehicle rear side from the lower end of the wall portion 13B. A panel surface 13C extending obliquely downward. In other words, the bent portion 36 of the outer upper 12 has a convex surface 36A that protrudes so as to protrude convexly toward the vehicle inner side (vehicle front side) between the wall portion 13B and the bottom panel surface 13C in a side view of the vehicle. It is formed (see FIG. 8).

  The bent portion 38 of the inner panel 16 extends from the upper panel surface 17A toward the vehicle front obliquely lower side in the vehicle side view, and toward the vehicle rearward obliquely lower side from the lower end of the wall portion 17B. A bottom panel surface 17C. That is, the bent portion 38 of the inner panel 16 has a corner portion (bottom panel surface at the bottom) that is concavely curved inwardly of the vehicle (vehicle front side) between the wall portion 17B and the panel surface 17C in a side view of the vehicle. A concave surface (concave portion) 38A is formed as a corner portion on the 17C side. The concave surface 38A is formed according to the shape of the convex surface 36A.

  In the present embodiment, the adhesive 80 is applied to the joint portion of the inner panel 16. As shown in FIGS. 6 to 8, ribs 40 are formed on the concave surface 38 </ b> A of the bent portion 38 to which the adhesive 80 is applied, and are erected in a direction substantially orthogonal to the concave surface 38 </ b> A. The rib 40 is formed at a corner portion of the concave surface 38A so as to extend substantially in the vehicle vertical direction, and stands up from the concave surface 38A toward the vehicle outer side.

  As shown in FIG. 7, a bent portion 42 that is bent toward the outer upper 12 is formed at the outer end of the inner panel 16 in the vehicle width direction. The height of the bent portion 42 with respect to the panel surface of the inner panel 16 (the length in the vehicle longitudinal direction) is lower than the thickness of the adhesive 80 that joins the inner panel 16 and the outer upper 12 (the length in the vehicle longitudinal direction is short). ) Is set. Further, the outer end portion of the outer upper 12 in the vehicle width direction extends outward from the outer end portion of the inner panel 16 in the vehicle width direction, and the bent portion 42 of the inner panel 16 is provided at the outer end portion of the outer upper 12 in the vehicle width direction. A bent portion 44 that is bent toward the inner panel 16 is formed.

  Further, as shown in FIG. 7, the distance L between the concave surface 38 </ b> A of the inner panel 16 and the convex surface 36 </ b> A of the outer upper 12 in the vehicle width direction is the concave surface 38 </ b> A of the inner panel 16 and the outer upper. The distance between the 12 convex surfaces 36A and the outside in the vehicle width direction (inter-surface distance) is set wider. In the present embodiment, the distance (inter-surface distance) L between the concave surface 38A of the inner panel 16 and the convex surface 36A of the outer upper 12 gradually increases from the outer side in the vehicle width direction toward the inner side in the vehicle width direction. Is set. That is, the concave surface 38A of the inner panel 16 is inclined so that the vehicle width direction inner side is disposed on the vehicle front side from the vehicle width direction outer side in the vehicle plan view.

  9 to 11 show a joint 50 between the outer lower 14 and the inner panel 16 at the vehicle vertical direction intermediate portion of the back door 10 on the outer side in the vehicle width direction (see FIG. 5). As shown in FIGS. 5, 9, and 11, the joint portion 50 between the outer lower 14 and the inner panel 16 is connected to the vehicle inner side from the panel surfaces 15 </ b> A and 17 </ b> D on the vehicle outer (lower side) of the outer lower 14 and the inner panel 16. Folded portions 52 and 54 that are bent in a crank shape are formed. More specifically, the bent portion 52 of the outer lower 14 includes a protruding surface 52A that protrudes from the upper end of the lower panel surface 15A so as to bend to the vehicle inner side (vehicle front side) in the vehicle side view, and A panel surface 52B extending upward from the front end of the surface 52A (see FIG. 11).

  The bent portion 54 of the inner panel 16 includes a wall portion 17E bent from the upper end of the lower panel surface 17D to the vehicle inner side (vehicle front side) in the vehicle side view, and an upper side from the front end of the wall portion 17E. An extended bottom panel surface 17F. That is, the bent portion 54 of the inner panel 16 has a corner portion (bottom panel surface at the bottom) that is concavely curved inwardly of the vehicle (vehicle front side) between the wall portion 17E and the panel surface 17F when viewed from the side of the vehicle. A concave surface (concave portion) 54 as a corner portion on the 17F side is formed. The concave surface 54A is formed according to the shape of the protruding surface 52A and the panel surface 52B.

  As shown in FIGS. 9 to 11, ribs 56 are formed on the concave surface 54 </ b> A of the bent portion 54 to which the adhesive 80 is applied so as to stand in a direction substantially orthogonal to the concave surface 54 </ b> A. The rib 56 is formed along the vehicle front-rear direction from the vicinity of the corner portion of the concave surface 54A to the wall portion 17E, and stands up from the concave surface 54A toward the vehicle outer side.

  Further, as shown in FIG. 10, the interval (inter-surface distance) L between the concave surface 54A of the inner panel 16 and the protruding surface 52A or the panel surface 52B of the outer lower 14 is a general part (part other than the bent part). It is set wider than the interval between the joint surface of the inner panel and the joint surface of the outer lower. For example, the distance between the joint surface of the inner panel of the general part and the joint surface of the outer lower is about 3 mm, whereas the distance between the concave surface 54A of the inner panel 16 and the projecting surface 52A of the outer lower 14 (inter-surface distance). L is set to about 5 mm.

  12 to 14 show a joint portion 60 between the outer lower 14 and the inner panel 16 on the lower side of the central portion in the vehicle width direction of the back door 10 (see FIG. 5). As shown in FIGS. 5 and 12 to 14, the joint 60 between the outer lower 14 and the inner panel 16 on the lower side of the central portion in the vehicle width direction of the back door 10 has a vehicle outer side of the outer lower 14 and the inner panel 16. Bending portions 62 and 64 that are bent in a crank shape from the (upper side) panel surfaces 15B and 17G to the inside of the vehicle are formed. More specifically, the bent portion 62 of the outer lower 14 includes a wall portion 15C extending from the upper panel surface 15B toward the vehicle front side in a vehicle side view, and a vehicle lower side from the front end of the wall portion 15C. And a panel surface 15D extending toward the front. That is, the bent portion 36 of the outer upper 12 is formed with a convex surface 62A that protrudes so as to bend in a convex shape toward the vehicle inner side (vehicle front side) with the wall portion 15C and the panel surface 15D when viewed from the side of the vehicle. (See FIG. 8).

  The bent portion 64 of the inner panel 16 includes a wall portion 17H extending from the upper panel surface 17G toward the vehicle front side in a vehicle side view and a bottom portion extending from the front end of the wall portion 17H toward the vehicle lower side. Panel surface 17I. That is, the bent portion 64 of the inner panel 16 has a corner portion (bottom panel surface at the bottom) that is concaved so as to be bent inwardly (in front of the vehicle) between the wall portion 17H and the panel surface 17I in the vehicle side view. A concave surface (concave portion) 64A is formed as a corner portion on the 17I side. The concave surface 64A is formed in accordance with the shape of the convex surface 62A.

  On the concave surface 64A of the bent portion 64 to which the adhesive 80 is applied, a rib 66 is formed standing up in a direction substantially orthogonal to the concave surface 64A. The rib 40 is formed in the vehicle front-rear direction and the vehicle up-down direction from near the corner of the concave surface 64A to the wall portion 17H, and stands up from the concave surface 64A toward the vehicle outer side.

  Here, before describing the operation and effect of the back door 10 of the present embodiment, the back door 100 to which the resin back door structure of the comparative example is applied will be described with reference to FIGS. 15 and 16.

  FIG. 15A shows a portion of the back door 100 of the comparative example corresponding to the joint portion 30 between the outer upper and the inner panel in the vehicle width direction outer side upper portion of the back door 10 shown in FIG. FIG. 15B shows a portion of the back door 100 of the comparative example corresponding to the joint portion 50 between the outer upper and the inner panel in the vehicle vertical direction intermediate portion of the back door 10 shown in FIG. Has been. FIG. 15C shows a portion corresponding to the joint portion 60 between the outer upper and the inner panel in the vicinity of the center portion in the vehicle width direction of the back door 10 shown in FIG.

  As shown in FIG. 15A, a portion 38B where the angle formed between the setting direction indicated by the arrow A and the concave surface 38A on the inner panel 106 of the outer upper 102 is small, that is, close to the setting direction indicated by the arrow A. In the portion 38B of the concave surface 38A, the adhesive 80 applied to the inner panel 106 may be scraped off on the locus of setting the outer upper 102 to the inner panel 106.

  Similarly, as shown in FIGS. 15 (B), 16 (A) and 16 (B), a portion 54B where the angle formed by the set direction indicated by arrow B to the inner panel 106 of the outer lower 104 and the concave surface 54A is small. That is, in the portion 54B of the concave surface 54A that is nearly parallel to the setting direction indicated by the arrow B, in the process of setting the outer lower 104 to the inner panel 106, the upper side of the adhesive 80 applied to the inner panel 106 (see FIG. 16 may be scraped off (above the two-dot chain line in FIG. 16). For this reason, the application state of the adhesive 80 may become unstable.

  Further, as shown in FIG. 6B, the scraped adhesive 80 is collected near the inner region 108 of the concave surface 54A between the outer lower 104 and the inner panel 106. The adhesive 80 collected in the vicinity of the inner region 108 protrudes in a direction orthogonal to the application line of the adhesive 80, that is, in the lateral direction of the inner region 108 (the width direction of the back door 100). When the seal line is on the outer periphery of the back door 100, the adhesive 80 may protrude outside the outer periphery of the back door 100. Regarding the protrusion of the adhesive 80, the same problem occurs regardless of whether the adhesive 80 is applied to the inner panel or the outer panel.

  As shown in FIG. 15C, the adhesive 80 is scraped off when setting the outer lower 104 to the inner panel 106 even at the portion 64 </ b> B of the concave surface 64 </ b> A that is nearly parallel to the setting direction indicated by the arrow B of the outer lower 104. there is a possibility.

  As shown in FIG. 15A, the concave surface 38A of the inner panel 106 cannot follow the locus of the adhesive application robot that applies the adhesive 80, and the adhesive applied at the corners of the concave surface 38A. The state where 80 is lifted, that is, the adhesive float 120 may occur. The bottom surface (back side surface) of the adhesive 80 that has been lifted is pressed against the inner panel 106 when the outer upper 102 is set, but air bubbles enter or the adhesive 80 begins to harden and is discharged from the nozzle of the adhesive application robot. There is a possibility that a bumpy shape may remain when it is applied, or a seal may be broken due to insufficient filling of the adhesive 80.

  Further, another cause of the seal failure is a change in the position of the adhesive 80 at the time of scraping. That is, the adhesive 80 may not be uniformly filled by being dragged by scraping the adhesive 80.

  Similarly, as shown in FIG. 15C, the adhesive float 120 where the applied adhesive 80 is lifted also occurs at the corners of the concave surface 64A of the inner panel 106, which causes the seal of the adhesive part to be cut off. There is.

  On the other hand, as shown in FIGS. 7 and 8, in the back door 10 of the present embodiment, the concave surface 38 </ b> A of the bent portion 38 of the inner panel 16 extends from the concave surface 38 </ b> A substantially along the vehicle vertical direction. Ribs 40 are formed to stand in a direction substantially orthogonal to each other. In other words, the bent portion 38 of the inner panel 16 includes a portion 38B (rear surface of the wall portion 17B) formed by a small angle formed by the setting direction indicated by the arrow A of the outer upper 12 and the concave surface 38A of the inner panel 16 and the adhesive. A rib 40 is formed in a portion 38C (near the corner on the panel surface 17C side at the bottom) where floating is likely to occur (see FIG. 8). As a result, the outer upper 12 is set on the inner panel 16 even if the adhesive 80 is floating at the corners of the concave surface 38A or the adhesive 80 is scraped off when setting the outer upper 12 in the direction of arrow A. In the state, the adhesive 80 bites into (cuts into) the tips of the ribs 40. Therefore, as shown in FIGS. 7 and 8, the inner panel 16 and the outer upper 12 can be more reliably sealed using the tip of the rib 40 as a seal line.

Further, as shown in FIG. 11, the bent portion 54 of the inner panel 16 has a portion 54B (wall portion 17E) in which the angle formed by the set direction indicated by the arrow B of the outer lower 14 and the concave surface 54A of the inner panel 16 is small. A rib 56 is formed on the upper surface of the substrate. Accordingly, as shown in FIGS. 10 and 11, even when the adhesive 80 is scraped off when setting the outer lower 14 in the direction of arrow B, the rib 56 is not removed in the state where the outer lower 14 is set on the inner panel 16. The adhesive 80 bites into the tip.
Similarly, as shown in FIGS. 13 and 14, the bent portion 64 of the inner panel 16 has a portion 64B having a small angle formed by the set direction indicated by the arrow B of the outer lower 14 and the concave surface 64A of the inner panel 16. Ribs 66 are formed on the lower surface of the wall portion 17H and the portion 64C (near the corner on the panel surface 17I side of the bottom portion) where adhesive floating is likely to occur. Thereby, even if the adhesive 80 is floating on the concave surface 64A, or even when the adhesive 80 is scraped off when setting the outer lower 14 in the direction of arrow B, in the state where the outer lower 14 is set on the inner panel 16, The adhesive 80 bites into (cuts into) the tips of the ribs 66. For this reason, the inner panel 16 and the outer lower 14 can be more reliably sealed using the tips of the ribs 56 and 66 as seal lines.

  Further, as shown in FIG. 7, in the back door 10 of the present embodiment, the distance L between the concave surface 38A of the inner panel 16 and the convex surface 36A of the outer upper 12 is from the outside in the vehicle width direction. It is formed so as to gradually become wider toward the inner side in the vehicle width direction. As a result, when the outer upper 12 is set on the inner panel 16, the adhesive 80 is scraped off and is easily collected on the panel surface 17C side at the bottom of the concave surface 38A. Protruding to the outer periphery can be suppressed.

  Further, as shown in FIG. 10, the distance L between the concave surface 54 </ b> A of the inner panel 16 and the protruding surface 52 </ b> A of the outer lower 14 is a general joint (joint other than the bent parts 52 and 54). Part)). As a result, when the outer lower 14 is set on the inner panel 16, the adhesive 80 is scraped off and is easily collected on the panel surface 17F side at the bottom of the concave surface 54A. Protruding to the outer periphery can be suppressed.

  On the other hand, in the back door 100 of the comparative example, at the bent portion of the inner panel 106, there is a possibility that the adhesive portion is cut off or the adhesive 80 protrudes to the outer peripheral portion of the back door 100 in the vehicle width direction outside. is there. In order to avoid this, for example, if a sealing material such as an ept sealer (sealing material containing rubber foam as a main component) is pasted against the seal breakage, the cost increases. In addition, for example, when the structure is formed so that the surface of the bent portion of the inner panel 106 is angled, the degree of freedom in design is restricted.

  On the other hand, in the back door 10 of this embodiment, when the outer upper 12 or the outer lower 14 is joined to the bent portions 38, 54, 64 of the inner panel 16, the seal 40 is broken by the ribs 40, 56, 66. Since it can suppress, addition of sticking materials, such as an ept sealer (sealing material which has rubber foam as a main component), and application of adhesives, such as additional polyurethane, to a seal break are unnecessary. Moreover, the process of the adhesive which protrudes from the outer peripheral part of the vehicle width direction outside of the back door 10 becomes unnecessary, and an unstable process such as partially reducing the amount of adhesive can be eliminated. These problems often lead to a design constraint that an angle is given to the surface of the bent portion of the inner panel 16, but a high degree of design freedom can be obtained by the present invention.

  In the above embodiment, ribs are provided near the corners on the panel surface side of the bottom of the bent portion of the inner panel 16 to which the adhesive is applied, but when the adhesive is applied to the outer upper and the outer lower, It is preferable to provide a rib in the vicinity of the corner on the panel surface side of the bottom of the bent portion of the outer upper and the outer lower. As a result, when the outer upper and the outer lower joint are joined to the inner panel 16 joint by an adhesive, the occurrence of a seal failure due to insufficient filling of the adhesive in the vicinity of the corner of the bent portion of the outer upper and the outer lower is suppressed. can do.

  In this embodiment, the outer panel is constituted by two members divided into the outer upper 12 and the outer lower 14. However, the outer panel is constituted by a single integrated panel, and the rear window glass is provided on the upper side of the outer panel. You may form the opening part for attachment.

  Further, in the present embodiment, the back door 10 in which both the outer upper and outer lower as the outer panel and the inner panel 16 are formed of resin is used. However, the present invention is not limited to this, and only the inner panel 16 may be made of resin.

  Further, in the present embodiment, the present invention is applied to a resin back door structure, but the present invention is not limited to the back door, and the present invention is also applied to a resin door structure in which an outer panel and a resin inner panel are joined with an adhesive. Can be applied.

10 Back door (resin door for vehicles)
12 Outer upper (outer panel)
14 Outer lower (outer panel)
16 Inner panel 17A Panel surface 17C Panel surface (bottom panel surface)
17D Panel surface 17F Panel surface (bottom panel surface)
17G Panel surface 17I Panel surface (bottom panel surface)
30 Junction part 36 Bending part 38 Bending part 38A Concave surface (concave part)
40 Rib 50 Joining portion 52 Bending portion 54 Bending portion 54A Concave surface (concave portion)
56 Rib 60 Joining part 62 Bending part 64 Bending part 64A Concave surface (concave part)
66 Rib 80 Adhesive

Claims (3)

An outer panel disposed outside the passenger compartment of the vehicle door;
A resin inner panel disposed on the vehicle interior side of the outer panel;
A bent portion that is provided at a joint portion that joins the outer panel and the inner panel with an adhesive, and is bent in a crank shape from a panel surface of the outer panel and the inner panel;
Ribs that are formed at the corners on the panel surface side of at least the bottom of the bent part on the panel surface side to which the adhesive is applied, and rise from the surface of the corners;
A resin door structure for vehicles.   The at least one part of the said rib is formed in the surface of the said bending part arrange | positioned along the direction which presses the junction part of the said outer panel, and the junction part of the said inner panel relatively. Resin door structure for vehicles. The adhesive is applied to the joint portion of the inner panel,
The resin door structure for a vehicle according to claim 1 or 2, wherein a corner portion on the panel surface side of the bottom portion is a concave portion in which the inner panel is recessed toward the vehicle interior side.

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