JP6639206B2 - Vehicle back door - Google Patents

Description

  The present invention relates to a vehicle back door having a structure in which an inner panel and an outer panel are joined with an adhesive.

  As this type of backdoor, a backdoor of a type in which an outer panel is divided into upper and lower parts is known (for example, see Patent Document 1). In this back door, an opening for a window is formed in the inner panel, and the outer panel is composed of an upper outer panel and a lower outer panel. The upper outer panel has a shape corresponding to a portion of the inner panel above the window opening, and has downwardly extending portions at both ends in the vehicle width direction. On the other hand, the lower outer panel has a shape corresponding to a portion of the inner panel below the window opening, and has extending portions extending upward at both ends in the vehicle width direction.

  The upper outer panel and the lower outer panel, including the extending portions, are each adhesively fixed to the inner panel. Between the extending portion of the upper outer panel and the extending portion of the lower outer panel, pillar portions constituting both sides of the inner panel in the vehicle width direction of the window opening are exposed to the outside. A window panel that closes the window opening is bonded and fixed to the upper outer panel, the lower outer panel, and the pillars, each of which includes an extension, corresponding to the peripheral portion of the window opening, with an adhesive.

JP 2011-219000A

  In the above-mentioned back door, if the terminal of the extension of the upper outer panel or the lower outer panel is an end surface perpendicular to the adhesive surface of the extension with the inner panel, the extension is required to adhere the outer panel to the inner panel. When the protruding portion is pressed against the inner panel, the adhesive is slightly extruded from between the inner panel and the extending portion to the terminal side of the extending portion, and the extruded adhesive and the end surface of the extending portion There may be a gap between them. This gap may not be filled even by the adhesive for bonding the window panel, which is applied to the extending portion and the pillar portion across the terminal of the extending portion, and may be a factor that impairs the sealing performance of the back door. ing.

  The present invention has been made in view of such a point, and an object of the present invention is to prevent a gap from being generated between a terminal of an outer panel and an adhesive, and to enhance a sealing property of a back door. It is in.

  In order to achieve the above object, the present invention has devised the shape of the terminal portion of the outer panel.

Specifically, the present invention provides an inner panel in which a window opening is formed, an upper outer panel facing a portion of the inner panel above the window opening, and a lower side of the inner panel than the window opening. And a window panel that covers a pillar portion of the inner panel that constitutes both sides of the inner panel in the vehicle width direction, between the upper outer panel and the lower outer panel. And a vehicle back door including the following. The present invention has the following solutions.

The first invention, the upper outer panel and the lower outer panel has a configuration that is joined with the first adhesive to the peripheral portion and the outer peripheral edge portion of the window opening of the inner panel. The window panel is joined with a second adhesive provided separately from the first adhesive over a terminal portion facing both sides of the window opening of the upper outer panel and the lower outer panel, and a pillar portion of the inner panel .

Furthermore, the terminal portion of at least one of the outer panel of the upper outer panel and a lower outer panel, to form an adhesive surface of an inner panel, the inclined bonding surfaces are provided inclined with respect to the thickness direction of the outer panel. The first invention is characterized in that a first adhesive protruding from between the inner panel and the inclined adhesive surface is interposed at a bonding portion of the pillar portion and the window panel with the second adhesive. I do.

The second invention has a configuration in which the upper outer panel and the lower outer panel are bonded to a peripheral portion and a peripheral portion of the window opening of the inner panel with an adhesive. The window panel is bonded with an adhesive between a terminal portion facing both sides of the window opening of the upper outer panel and the lower outer panel, and a pillar portion of the inner panel.

Pillar portion is formed in a horizontal concave cross section to direct the opening in the rear of the vehicle. The inner panel is provided with bridging pieces that bridge both side walls of the pillar portion. Further, the outer panel provided with the inclined adhesive surface is provided with an extending portion extending along the pillar portion at a position facing the bridging piece. A positioning hole is provided in one of the bridging piece and the extending portion, and a positioning pin inserted in the positioning hole is provided in the other. The second invention is characterized in that the axis of the positioning pin extends in a direction facing the inclined adhesive surface.

  According to a third aspect, in the vehicle back door according to the first or second aspect, the terminal portion provided with the inclined adhesive surface is formed to be sharp with the inclined adhesive surface.

According to a fourth aspect, in the vehicle back door according to any one of the first to third aspects, an adhesive portion of the inner panel to which the outer panel is attached forms a step on a non-adhesive portion side to which the outer panel is not attached. The configuration has a step surface. The fourth invention is characterized in that the inclined bonding surface is facing the stage difference surface.

According to a fifth aspect of the present invention, in the vehicle back door of the fourth aspect, the distance between the inclined adhesive surface (61) and the step surface becomes narrower toward the end of the terminal portion provided with the inclined adhesive surface. It is characterized by having.

According to the first invention, the terminal portion facing the pillar portion of at least one of the upper outer panel and the lower outer panel is provided with the inclined adhesive surface inclined with respect to the thickness direction of the outer panel. when pressed against the outer panel inclined bonding surfaces formed on the inner panel of the terminal portion of the outer panel through the first adhesive in the work to adhere to the inner panel, the first adhesive of the terminal portion by the inclined bonding surface It is pushed positively to the terminal side. Thereby, it is possible to prevent a gap from being generated between the terminal of the outer panel and the first adhesive, and it is possible to enhance the sealing property of the back door.

According to the second aspect, similarly to the first aspect, it is possible to prevent a gap from being generated between the terminal of the outer panel and the adhesive, and to enhance the sealing performance of the back door. In addition, a bridging piece is provided on the inner panel, and an extending part is provided on the outer panel, and a positioning structure using a positioning hole and a positioning pin is provided on the bridging piece and the extending part, so that the outer panel is provided on the inner panel. Workability in assembling can be improved. In addition, since the positioning pin shaft is extended in a direction facing the inclined bonding surface, the outer panel is simply pressed against the inner panel in the direction in which the positioning pin is inserted into the positioning hole, so that the outer panel contacts the inclined bonding surface. The force in the direction of pushing the adhesive toward the end of the terminal portion of the outer panel efficiently acts on the adhesive, and it is possible to suitably prevent a gap from being generated between the adhesive and the terminal of the outer panel.

According to the third aspect, the terminal portion of the outer panel is formed to be sharp by the inclined adhesive surface, so that the end of the terminal portion becomes linear, and the linear terminal is bonded to the adhesive (first adhesive). When pressed against the adhesive, the adhesive can be easily cut into and adhered to the adhesive. Thereby, it is possible to reliably prevent a gap from being generated between the terminal of the outer panel and the adhesive (first adhesive) .

According to the fourth aspect, since the inner panel is provided with the step surface facing the inclined adhesive surface, the inclination when the terminal portion of the outer panel is pressed against the inner panel via the adhesive (first adhesive). it can be obtained extrusion effect of the adhesive according to the adhesion surface more effectively. Thereby, it is possible to more reliably prevent a gap from being generated between the terminal of the outer panel and the adhesive (first adhesive) .

It is the whole perspective view which looked at the back door concerning an embodiment from the back side. It is an exploded perspective view of the back door concerning an embodiment. FIG. 3 is an enlarged perspective view of a portion surrounded by III in FIG. 2. FIG. 4 is a view corresponding to FIG. 3, showing a state in which a lower outer panel is positioned on and bonded to an inner panel. FIG. 4 is a rear view of a part corresponding to FIG. 3, showing a state in which a lower outer panel is assembled to an inner panel. It is sectional drawing of the back door in the VI-VI line of FIG. It is sectional drawing of the back door in the VII-VII line of FIG. FIG. 8 is an enlarged sectional view of a portion surrounded by VIII in FIG. 7. FIG. 7 is a view corresponding to FIG. 6 showing a state in which an adhesive is applied to the inner panel. FIG. 8 is a view corresponding to FIG. 7, showing a state in which an adhesive is applied to the inner panel. FIG. 7 is a view corresponding to FIG. 6, showing an operation when the lower outer panel is assembled to the inner panel. FIG. 8 is a view corresponding to FIG. 7, showing an operation when assembling the lower outer panel to the inner panel. FIG. 7 is a view corresponding to FIG. 6, illustrating an operation when assembling a window panel to a joined body of an inner panel and an outer panel. FIG. 8 is a view corresponding to FIG. 7, showing an operation when assembling the window panel to the joined body of the inner panel and the outer panel. FIG. 9 is a diagram corresponding to FIG. 8 of the back door according to Comparative Example 1. FIG. 9 is a diagram corresponding to FIG. 8 of the back door according to Comparative Example 2.

  Hereinafter, exemplary embodiments will be described in detail with reference to the drawings. In the following embodiments, for convenience of explanation, the front side in the vehicle front-rear direction is referred to as “front”, the rear side is referred to as “rear”, the left side in the vehicle width direction facing the front of the vehicle is “left”, and the right side is “right”. , And the upper side in the vehicle height direction is referred to as “upper”, and the lower side in the vehicle height direction is referred to as “lower”.

  FIG. 1 shows an overall perspective view of a vehicle back door 1 according to this embodiment as viewed from the rear side. FIG. 2 shows an exploded perspective view of the back door 1. FIG. 3 is an enlarged perspective view of a portion surrounded by III in FIG. FIG. 4 is a view corresponding to FIG. 3 in a state in which the lower outer panel 33 is positioned on and bonded to the inner panel 3. FIG. 5 shows a rear view of a portion corresponding to FIG. 3 in a state where the lower outer panel 33 is assembled to the inner panel 3. FIG. 6 is a sectional view of the back door 1 taken along line VI-VI in FIG. FIG. 7 is a sectional view of the back door 1 taken along line VII-VII in FIG. FIG. 8 is an enlarged sectional view of a portion surrounded by VIII in FIG.

-Schematic configuration of back door-
A back door 1 shown in FIG. 1 is an up / down open / close type back door that opens and closes a back door opening 103 provided at a rear end of a body 101 of a hatchback vehicle. As shown in FIG. 2, the back door 1 includes an inner panel 3 located on the inside (front side) of the vehicle, and an outer panel 5 and a window panel 7 located on the outside (rear side) of the vehicle. The inner panel 3, the outer panel 5, and the window panel 7 are joined to each other by an adhesive 9, 67.

-Structure of inner panel-
The inner panel 3 is a one-piece resin panel formed by injection molding or the like, for example, polypropylene containing glass fiber (PP-GF) or polypropylene containing carbon fiber (PP-CF: Polypropylene Carbon). Fiber) or other thermoplastic resin containing a fiber reinforcing material. The rigidity of the inner panel 3 is higher than the rigidity of the outer panel 5 (the upper outer panel 31 and the lower outer panel 33 described later).

  A substantially trapezoidal window opening 11 extending in the vehicle width direction is formed in an upper half portion of the inner panel 3. In the peripheral portion of the window opening 11 of the inner panel 3, an inner standing wall 13 rising rearward and an inner joint piece 15 protruding inward of the window opening from the rear end of the inner standing wall 13 are provided. Have been. Further, an outer peripheral wall of the inner panel 3 is provided with an outer standing wall 17 rising rearward and an outer joint piece 19 projecting outward from a rear end of the outer standing wall 17.

  Thus, the inner panel 3 has a concave shape in which the inner peripheral edge and the outer peripheral edge around the window opening 11 rise rearward. As shown in FIGS. 2 to 5, each of the inner panels 3 has a pillar portion 21 formed in a horizontal cross-section concave shape facing the opening as shown in FIGS. 2 to 5. ing. The pillar portion 21 includes a bottom surface portion 23 forming the bottom surface of the concave portion, an inner wall 25 located inside in the vehicle width direction, and an outer wall 27 located outside in the vehicle width direction.

  The inner side wall 25 is formed by the inner standing wall 13 and a part of the inner joining piece 15. The outer side wall 27 is formed by the outer standing wall 17 and a part of the outer joining piece 19. Each pillar portion 21 is provided with a pair of bridging pieces 29 for bridging and connecting the inner wall 25 and the outer wall 27 to the left and right, one at each of the upper and lower sides of the pillar portion 21. Thereby, the rigidity of the pillar portion 21 is improved, and the pillar portion 21 is prevented from being deformed or damaged even when an external load is applied due to a vehicle accident or the like.

-Outer panel configuration-
As shown in FIGS. 1 and 2, the outer panel 5 is vertically divided into two parts, and is composed of an upper outer panel 31 located on the upper side and a lower outer panel 33 located on the lower side. The upper outer panel 31 and the lower outer panel 33 are resin panels formed by injection molding or the like. For example, talc-containing polypropylene (PP-T: Polypropylene Talc) and ethylene propylene diene methylene rubber (EPDM: Ethylene Propylene Diene Monomer) ) Is mixed.

  The upper outer panel 31 faces a portion of the inner panel 3 above the window opening 11, and is formed in a horizontally long strip shape corresponding to the portion. At the lower edge portion of the upper outer panel 31, an upper joint piece 35 located forward through a stepped portion extending in the front-rear direction is provided over the whole in the vehicle width direction. At both left and right end portions of the upper joint piece 35, extending portions 37 are provided extending along the pillar portions 21 to locations corresponding to the upper bridging pieces 29, respectively.

The extended portion 37 of the upper outer panel 31 is used for positioning when the upper outer panel 31 is assembled to the inner panel 3 by engaging with the corresponding bridging piece 29. The upper outer panel 31, including both the extending portions 37, includes an upper side portion of the inner joint piece 15 corresponding to the peripheral portion of the window opening 11 of the inner panel 3 and an outer side joint corresponding to the outer peripheral portion of the inner panel 3. Of the piece 19, the portion from the upper end of the pillar portion 21 to the upper side and the upper side of the right and left sides of the piece 19 are joined with the adhesive 9 (first adhesive) .

  On the other hand, the lower outer panel 33 faces a portion of the inner panel 3 below the window opening 11 and has a shape corresponding to the same portion. At the upper edge of the lower outer panel 33, a lower joint piece 39 located forward through a stepped portion extending in the front-rear direction is provided over the whole in the vehicle width direction. Extending portions 41 are provided at both left and right ends of the lower joining piece 39 to extend along the pillar portion 21 to a position corresponding to the lower bridging piece 29.

  The extended portion 41 of the lower outer panel 33 is used for positioning when the lower outer panel 33 is assembled to the inner panel 3 by engaging with the corresponding bridging piece 29. The lower outer panel 33, including the two extending portions 41, includes a lower side portion of the inner joining piece 15 corresponding to the peripheral portion of the window opening 11 of the inner panel 3 and an outer joining portion corresponding to the outer peripheral portion of the inner panel 3. Adhesive 9 is attached to the portion of the piece 19 from the lower end of the pillar portion 21 to the lower side and the lower side of the left and right sides of the piece 19.

  The adhesive 9 for bonding the upper outer panel 31 and the lower outer panel 33 to the inner panel 3 is an adhesive having rubber elasticity, a so-called elastic adhesive. As the elastic adhesive, for example, a urethane-based adhesive can be used.

-Positioning structure and its peripheral configuration-
Each of the bridging pieces 29 of the inner panel 3 and the extending portions 37 and 41 of the upper outer panel 31 and the lower outer panel 33 are provided with a positioning structure for positioning them. In the back door 1, a positioning structure for the upper outer panel 31 and the inner panel 3 and a peripheral structure thereof (a configuration in which the lower outer panel 33 is provided with an inclined bonding surface 61, which will be described later, and a step surface 57 is provided in the inner panel 3). The same positioning structure and its peripheral configuration are adopted for the positioning structure of the lower outer panel 33 and the inner panel 3 and its peripheral configuration. The positioning structure and its peripheral configuration will be described using the positioning structure on the lower outer panel 33 side and its peripheral configuration as an example.

  As shown in FIGS. 3 to 6, a protruding piece 43 protruding upward is provided in the middle of each extension 41 of the lower outer panel 33 in the left-right direction. The protruding piece 43 is provided with a concave portion 47 whose bottom surface is the engaging surface 45 facing the bridging piece 29 of the inner panel 3. The engaging surface portion 45 of the concave portion 47 extends obliquely downward toward the front, and is inclined with respect to the rear surface of the extension portion 41 except for the protruding piece 43. An insertion hole 49 into which the tapping screw 50 is inserted and a positioning hole 51 are provided in the engagement surface portion 45 side by side.

  On the other hand, on the bridging piece 29 below each pillar 21 of the inner panel 3, a positioning pin 53 for positioning protruding rearward and a boss 55 having a fastening hole are provided side by side. . The axis A of the positioning pin 53 extends in a direction in which a later-described inclined bonding surface 61 faces. Specifically, the positioning pin 53 extends in a direction perpendicular or substantially perpendicular to the inclined adhesive surface 61 (90 degrees ± 10 degrees). The positioning pins 53 are inserted into the positioning holes 51 of the lower outer panel 33 to position the lower outer panel 33 with respect to the inner panel 3. A tapping screw 50 that is inserted through the insertion hole 49 of the corresponding extension 41 is fastened to the fastening hole of the boss 55.

  The left and right portions of each extension 41 of the lower outer panel 33 are joined to the inner joint piece 15 and the outer joint piece 19 of the inner panel 3 via the adhesive 9. The bonding portion 3a of the inner bonding piece 15 and the outer bonding piece 19 of the inner panel 3 to which the respective extension portions 41 of the lower outer panel 33 are bonded is the non-bonding portion 3b of the pillar portion 21 to which the respective extension portions 41 are not bonded. , And has a step surface 57 forming the step as a rear surface. The step surface 57 is an inclined surface extending obliquely downward toward the front.

  The lower outer panel 33 is fitted into a portion of the inner panel 3 below the step surface 57, that is, a portion located relatively forward. The rear surface of the extending portion 41 of the lower outer panel 33 is formed between the inner surface of the inner joint piece 15 and the outer joint piece 19 of the pillar portion 21 of the inner panel 3 which are exposed from the outer panel 5 (31, 33), in the front-rear direction. Are aligned.

  As shown in FIG. 7, the terminal portions 59 facing the pillar portion 21 on both sides in the vehicle width direction of the window opening 11 on both left and right sides of the protruding piece 43 of each extension portion 41 of the lower outer panel 33. In addition, the bonding surface with the inner panel 3, that is, the bonding surface with the inner joint piece 15 in the inner terminal portion 59 in the vehicle width direction, and the outer bonding piece 19 in the outer terminal portion 59 in the vehicle width direction. And an inclined bonding surface 61 that forms a bonding surface with the adhesive. The inclined adhesive surface 61 is a flat surface that extends obliquely downward toward the front, is inclined with respect to the thickness direction of the outer panel 5, and forms the entire end surface of the terminal portion 59. The terminal portion 59 provided with the inclined adhesive surface 61 is formed sharp by the inclined adhesive surface 61.

  The inclined adhesive surface 61 faces the step surface 57 of the inner panel 3 via the adhesive 9, and the step surface 57 is joined thereto. The distance between the inclined adhesive surface 61 and the step surface 57 becomes smaller toward the end of the terminal portion 59 where the inclined adhesive surface 61 is provided. Above the terminal portion 59 on which the inclined adhesive surface 61 is provided, the adhesive 9 protruding from between the inclined adhesive surface 61 and the step surface 57 rises rearward.

-Window panel configuration-
As shown in FIGS. 1 and 2, the window panel 7 is a horizontally long panel extending in the vehicle width direction across both left and right ends of the back door 1, and is fitted between the upper outer panel 31 and the lower outer panel 33. Thus, the window opening 11 of the inner panel 3 is closed on the rear side, and the openings of both pillar portions 21 are covered. The window panel 7 includes a transparent main body panel 63 made of resin or glass, and a concealing layer 65 made of black ceramics or the like provided on the inner surface of the outer peripheral portion of the main body panel 63 over the entire circumference. Is provided.

  The area of the window panel 7 located inside the concealing layer 65 corresponds to the window opening 11 and constitutes a light-receiving window area 7 a formed by a part of the main body panel 43. The area of the window panel 7 where the concealing layer 65 is provided constitutes a concealed area 7b for concealing a portion overlapping the area. The concealed area 7b includes portions corresponding to both the pillar portions 21, the upper joint piece 35, and the lower joint piece 39. Thus, the overlapping portion between the inner panel 3 and the upper outer panel 31 and between the lower outer panel 33 and the window panel 7 are not visible from the outside of the vehicle.

The window panel 7 includes a left and right side portion of the outer joint pieces 19 of the inner panel 3, an upper joint piece 35 of the upper outer panel 31, and a lower joint piece 39 of the lower outer panel 33 in FIGS. 6 and 7. The adhesive 67 (second adhesive) shown in FIG. The adhesive 67 for joining the window panel 7 is an elastic adhesive such as a urethane-based adhesive similar to the adhesive 9 for joining the inner panel 3 and the outer panel 5.

  The adhesive 67 extends over the extending portions 37 and 41 and the portion of the outer joint piece 19 of the inner panel 3 that is exposed from the outer panel 5, straddling the ends of the terminal portions 59 of the upper outer panel 31 and the lower outer panel 33. Is provided. The adhesive 9 protruding from between the inclined adhesive surface 61 and the step surface 57 is interposed in the adhesive portion between the outer joint piece 19 and the window panel 7. The adhesive 9 and the adhesive 67 for bonding the window panel 7 are integrated and connected.

-How to assemble the back door-
The method of assembling the back door 1 will be described below with reference to FIGS. FIG. 9 is a view corresponding to FIG. 6, and FIG. 10 is a view corresponding to FIG. 7, showing a state in which the adhesive 9 is applied to the inner panel 3, respectively. FIG. 11 is a diagram corresponding to FIG. 6 and FIG. 12 is a diagram corresponding to FIG. 7, each showing an operation when the lower outer panel 33 is assembled to the inner panel 3. FIG. 13 is a view corresponding to FIG. 6, and FIG. 14 is a view corresponding to FIG. 7, and shows an operation when the window panel 7 is assembled to the joined body of the inner panel 3 and the outer panel 5, respectively.

  To assemble the back door 1, first, as shown in FIGS. 3, 9, and 10, an adhesive 9 is applied to a bonding surface of the inner panel 3 with the upper outer panel and the lower outer panel. After that, as shown in FIG. 4, the lower outer panel 33 is overlaid on the lower half of the inner panel 3, and both are attached.

  Specifically, as shown in FIG. 11, the lower outer panel 33 is inclined so that the upper portion is relatively close to the inner panel 3 and the lower portion is relatively separated from the inner panel 3. In this state, the lower outer panel 33 is positioned on the inner panel 3 by inserting the corresponding positioning pins 53 of the bridging pieces 29 into the positioning holes 51 of both the extending portions 41 of the lower outer panel 33. At this time, the lower portion of the lower outer panel 33 is rotated around the portion where the positioning holes are provided so as to approach the inner panel as the positioning pins are inserted into the positioning holes. In this manner, the entire lower outer panel is superposed while being positioned on the inner panel.

  In the process of overlapping the lower outer panel 33 with the inner panel 3 as described above, the terminal portion 59 of the lower outer panel 33 is pressed against the inner panel 3 via the adhesive 9 as shown in FIG. At this time, the adhesive 9 is positively pushed out to the end side of the terminal portion 59 by the inclined adhesive surface 61 provided on the terminal portion 59. This prevents a gap from being formed between the end of the extension portion 41 of the lower outer panel 33 and the adhesive 9.

  Next, as shown in FIG. 5, a tapping screw 50 is inserted into an insertion hole 49 provided in each extension portion 41 of the lower outer panel 33, and fastened to a fastening hole of a boss portion 55 provided in the bridging piece 29. . Thereby, the lower outer panel 33 is temporarily fixed to the inner panel 3.

  Further, the upper outer panel 31 is overlaid on the upper part of the inner panel 3 via the adhesive 9 while being positioned in the same procedure as the lower outer panel 33, and after being pasted together, they are temporarily fixed with the tapping screws 50.

  Further, an adhesive 67 is applied to the bonding surface of the window panel 7, and the window panel 7 is attached to the joined body of the inner panel 3 and the outer panel 5 with the upper outer panel 31 and the lower panel, as shown in FIGS. 13 and 14. It is fitted between the outer panel 33 and overlapped with an adhesive 67 therebetween, and the two are bonded together.

  Thereafter, the joined body in which the inner panel 3, the outer panel 5, and the window panel 7 are bonded is transported to a drying oven, and the adhesives 9, 67 are completely cured in the drying oven, whereby the inner panel 3, the outer panel 5, The window panels 7 are joined together. By the above procedure, the back door 1 can be assembled.

-Effects of the embodiment-
FIG. 15 shows a back door 1 according to Comparative Example 1 corresponding to FIG. FIG. 16 shows a back door 1 according to Comparative Example 2 corresponding to FIG. In addition, also about the structure of the comparative examples 1 and 2 shown in these FIG. 15 and FIG.

  The terminal of the extension 41 of the lower outer panel 33 may be an end surface perpendicular to the bonding surface of the extension 41 with the inner panel 3 as shown in FIG. 15 or the window panel 7 as shown in FIG. When the extended portion 41 is pressed against the inner panel 3 to adhere the lower outer panel 33 to the inner panel 3, the lower outer panel 33 adheres from between the inner panel 3 and the extended portion 41. Although the agent 9 is extruded by a small amount toward the terminal side of the extending portion 41, a gap X may occur between the extruded adhesive 9 and the end surface of the extending portion 41. This gap X may not be filled even by the adhesive 67 that adheres to the window panel 7 and is applied to the extension portion 41 and the outer joint piece 19 across the terminal of the extension portion 41. This is a factor that impairs the sealing performance of the device.

  On the other hand, according to the back door 1 of this embodiment, the terminal portion 59 of the extension portions 37 and 41 of the lower outer panel 33 facing the pillar portion 21 is inclined with respect to the thickness direction of the lower outer panel 33. Since the inclined adhesive surface 61 is provided, the terminal portion 59 of the lower outer panel 33 is pressed against the inner panel 3 via the adhesive 9 in the operation of bonding the lower outer panel 33 to the inner panel 3. 9 is positively pushed out to the end side of the terminal portion 59 by the inclined adhesive surface 61.

  Further, according to the back door 1 according to this embodiment, since the axis A of the positioning pin 53 is extended in the direction in which the inclined adhesive surface 61 faces, the positioning pin 53 is inserted into the positioning hole 51. By simply pressing the lower outer panel 33 against the inner panel 3 in the direction, the force in the direction of pushing the adhesive 9 in contact with the inclined adhesive surface 61 toward the end of the terminal portion 59 can be efficiently applied.

  Further, according to the back door 1 according to this embodiment, since the step surface 57 facing the inclined adhesive surface 61 is provided on the inner panel 3, the terminal portion 59 of the lower outer panel 33 is attached to the inner panel 3 via the adhesive 9. The effect of pushing out the adhesive 9 by the inclined adhesive surface 61 when pressed against the panel 3 can be obtained more effectively.

  Further, according to the back door 1 according to this embodiment, since the terminal portion 59 of the lower outer panel 33 is formed to be sharp by the inclined adhesive surface 61, the terminal of the extension portion 41 becomes linear, and When the terminal is pressed against the adhesive 9, the terminal can be easily cut into the adhesive and brought into close contact therewith.

  By the above operation, it is possible to prevent the gap X as shown in FIGS. 15 and 16 from being generated between the terminal of each extension portion 41 of the lower outer panel 33 and the adhesive 9. Such an effect can be similarly obtained in the upper outer panel 31 having the same configuration, positioning structure, and peripheral configuration of the terminal portion 59 as the lower outer panel 33. Therefore, the sealing performance of the back door 1 can be improved.

  As described above, the preferred embodiments have been described as examples of the invention. However, the present invention is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, and the like are made as appropriate. Further, it is also possible to form a new embodiment by combining the components described in the above embodiment. In addition, components described in the accompanying drawings and the detailed description may include components that are not essential for solving the problem. Therefore, based on the description of the non-essential components in the accompanying drawings and the detailed description, it should not be immediately determined that the non-essential components are essential.

  For example, the above embodiment may have the following configuration.

  In the above embodiment, the inclined adhesive surface 61 is a flat surface. However, the present invention is not limited to this, and the inclined adhesive surface 61 may be a surface that is curved so as to project toward the step surface 57 of the inner panel 3. Good.

  In the above-described embodiment, the inclined adhesive surface 61 forms the entire end surface of the terminal portion 59 of the lower outer panel 33. However, the present invention is not limited thereto, and the inclined adhesive surface 61 is formed of the end surface of the terminal portion 59. Part of the inner panel 3 side may be partially formed, and the terminal portion 59 may not be sharp.

  In the above-described embodiment, the distance between the inclined adhesive surface 61 and the step surface 57 is narrower toward the end of the terminal portion 59. However, the present invention is not limited to this. They may face each other in a parallel state, and the interval between the inclined adhesive surface 61 and the step surface 57 may be wider toward the end of the terminal portion 59.

  Even with these configurations, when the terminal portion 59 of the lower outer panel 33 is pressed against the inner panel 3 via the adhesive 9, the adhesive 9 is positively moved toward the distal end of the terminal portion 59 by the inclined adhesive surface 61. , The same effect as in the above embodiment can be obtained.

  Further, in the above embodiment, the extending portions 41 are provided on the left and right sides of the lower outer panel 33, respectively, and the inclined adhesive surface 61 is provided on the terminal portion 59 of each of the extending portions 41. Not limited to this, the lower outer panel 33 does not include the extending portion 41, and the lower joining piece 39 is provided on both sides of the window opening 11 in the left and right portions corresponding to the base end of each extending portion 41 in the above embodiment in the above embodiment. The inclined adhesive surface 61 similar to the above embodiment may be provided on the facing terminal unit. This is the same for the upper outer panel 31.

  In the above embodiment, the positioning pin 53 is provided on the bridging piece 29 of the inner panel 3 and the positioning hole 51 is provided on the extension 37 of the lower outer panel 33. However, the present invention is not limited to this. A positioning hole 51 may be provided in the bridging piece 29 of the panel 3, and a positioning pin 53 may be provided in the extension 37 of the lower outer panel 33.

  Further, in the above-described embodiment, the inclined portions 61 are provided on the terminal portions 59 in both the upper outer panel 31 and the lower outer panel 33. However, the present invention is not limited to this, and only the terminal portions 59 of the upper outer panel 31 are inclined. The surface 61 may be provided, or only the terminal portion 59 of the lower outer panel 33 may be provided with the inclined adhesive surface 61.

  As described above, the present invention is useful for a vehicular back door having a structure in which an inner panel and an outer panel are joined with an adhesive.

DESCRIPTION OF SYMBOLS 1 ... Back door, 3 ... Inner panel, 3a ... Adhesion part, 3b ... Non-adhesion part,
5 outer panel, 7 window panel, 7a window area, 7b concealed area, 9 adhesive
11 ... window opening, 13 ... inner standing wall, 15 ... inner joining piece, 17 ... outer standing wall,
19 ... outer joint piece, 21 ... pillar part, 23 ... bottom part, 25 ... inner side wall, 27 ... outer side wall,
29 ... bridge piece, 31 ... upper outer panel, 33 ... lower outer panel,
35 ... upper joint piece, 37 ... extension part, 39 ... lower joint piece, 41 ... extension part,
43 ... projecting piece, 45 ... engaging surface part, 47 ... recess, 49 ... insertion hole, 50 ... tapping screw,
51: positioning hole, 53: positioning pin, 55: boss, 57: step surface,
59: terminal portion, 61: inclined adhesive surface, 63: body panel, 65: concealing layer, 67: adhesive,
101: vehicle body, 103: back door opening

Claims (5)

An inner panel (3) formed with a window opening (11);
An upper outer panel (31) facing a portion of the inner panel (3) above the window opening (11);
A lower outer panel (33) facing a portion of the inner panel (3) below the window opening (11);
The window opening (11) is closed between the upper outer panel (31) and the lower outer panel (33), and both sides of the inner panel (3) in the vehicle width direction of the window opening (11). A window panel (7) covering a pillar portion (21) constituting the portion,
The upper outer panel (31) and the lower outer panel (33) are joined to a peripheral portion and an outer peripheral portion of the window opening (11) of the inner panel (3) with a first adhesive (9),
The window panel (7) has a terminal portion (59) facing both sides of the window opening (11) of the upper outer panel (31) and the lower outer panel (33), and a pillar portion of the inner panel (3). 21) a vehicle back door joined with a second adhesive ( 67 ) provided separately from the first adhesive (9) ,
The terminal portion (59) of at least one of the upper outer panel (31) and the lower outer panel (33) forms an adhesive surface with the inner panel (3) in the thickness direction of the outer panel. An inclined adhesive surface (61) inclined to the
A portion of the pillar (21) and the window panel (7) bonded by the second adhesive (67) protrudes from between the inner panel (3) and the inclined bonding surface (61) of the outer panel. A back door for a vehicle, wherein the first adhesive (9) is interposed. An inner panel (3) formed with a window opening (11);
An upper outer panel (31) facing a portion of the inner panel (3) above the window opening (11);
A lower outer panel (33) facing a portion of the inner panel (3) below the window opening (11);
The window opening (11) is closed between the upper outer panel (31) and the lower outer panel (33), and both sides of the inner panel (3) in the vehicle width direction of the window opening (11). A window panel (7) covering a pillar portion (21) constituting the portion,
The upper outer panel (31) and the lower outer panel (33) are joined to a peripheral portion and an outer peripheral portion of the window opening (11) of the inner panel (3) with an adhesive (9),
The window panel (7) has a terminal portion (59) facing both sides of the window opening (11) of the upper outer panel (31) and the lower outer panel (33), and a pillar portion of the inner panel (3). 21) a vehicle back door joined with an adhesive (67) over
The terminal portion (59) of at least one of the upper outer panel (31) and the lower outer panel (33) forms an adhesive surface with the inner panel (3) in the thickness direction of the outer panel. An inclined adhesive surface (61) inclined to the
An adhesive (9) protruding from between the inner panel (3) and the inclined adhesive surface (61) of the outer panel is interposed at an adhesive portion between the pillar portion (21) and the window panel (7). ,
The pillar portion (21) is formed in a concave shape with a horizontal cross section that faces the opening toward the rear of the vehicle,
The inner panel (3) is provided with a bridging piece (29) that bridges both side walls (25, 27) of the pillar portion (21),
The outer panel provided with the inclined adhesive surface (61) is provided with an extending portion (37) extending to a location facing the bridging piece (29) along the pillar portion (21),
One of the bridging piece (29) and the extension (37) is provided with a positioning hole (51), and the other is provided with a positioning pin (53) inserted into the positioning hole (51).
A back door for a vehicle, wherein the axis (A) of the positioning pin (53) extends in a direction in which the inclined adhesive surface (61) faces. The vehicle back door according to claim 1 or 2,
A back door for a vehicle, wherein the terminal portion (59) provided with the inclined adhesive surface (61) is sharply formed by the inclined adhesive surface (61). The vehicle back door according to any one of claims 1 to 3,
The adhesive portion in which the outer panel is bonded out of the inner panel (3) (3a) has a non-adhesive portion (3b) side of the outer panel is not glued, stepped surface to form a step difference (57),
The inclined adhesive surface (61) for a vehicle back door, characterized in that facing the front Symbol stepped surface (57). The vehicle back door according to claim 4,
The distance between the inclined adhesive surface (61) and the step surface (57) becomes smaller toward the end of the terminal portion (59) provided with the inclined adhesive surface (61).
A back door for a vehicle, characterized in that:

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