JP6242107B2 - Vehicle back door assembly structure - Google Patents

Description

  The present invention relates to an assembly structure of a vehicle back door provided with a rear spoiler.

  This type of back door has a structure in which a resin inner panel and a resin outer panel are joined. The inner panel is provided with a window opening in the upper half portion. The outer panel includes an upper panel bonded to a portion of the inner panel positioned above the window opening, and a lower panel bonded to a portion of the inner panel positioned lower than the window opening. The window opening of the inner panel is closed by a window panel disposed between the upper panel and the lower panel.

  Of the outer peripheral edge of the window panel, the upper edge and the lower edge are bonded to the outer panel, and the left edge and the right edge are bonded to the inner panel from the rear of the vehicle. A rear end portion of the upper panel of the vehicle constitutes a hollow rear spoiler that protrudes rearward of the vehicle. The entire rear spoiler is integrally formed with the upper panel. The rear spoiler extends at a right angle to or close to the bonding surface of the upper panel with the upper edge of the window panel. The rear spoiler and the window panel are large toward the rear of the vehicle. Open (see, for example, Patent Document 1).

JP 2011-136606 A

  By the way, depending on the type of vehicle, a back door with a design that allows the window panel to be laid down horizontally is required, and in order to improve the appearance of the back door of the same design, the rear spoiler is attached to the upper edge of the window panel. There is a design requirement that the rear spoiler and the window panel should be close to each other so that the rear spoiler and the window panel are close to each other.

  However, in the above-described conventional back door, when trying to meet such a demand, the entire rear spoiler is integrally formed with the upper panel, so when adopting a structure in which the rear spoiler and the window panel are brought close to each other, It is not possible to secure a space for bonding the window panel, and the rear spoiler gets in the way, making it difficult to attach the window panel to the door body. For this reason, the design shape of the rear spoiler is limited to a range in which a space for bonding the window panel can be secured, and as a result, the design freedom of the back door is limited.

  The present invention has been made in view of such a point, and an object of the present invention is to increase the degree of freedom in designing the back door by eliminating manufacturing restrictions on the design shape of the rear spoiler.

  In order to achieve the above object, in the present invention, the structure of the portion of the upper panel that constitutes the rear spoiler is devised so that the design shape of the rear spoiler is not constrained to secure a space for bonding the window panel. .

  Specifically, the present invention provides a resin inner panel provided with a window opening, an upper panel bonded to a portion of the inner panel positioned above the window opening, and a lower side than the window opening. A lower panel having a lower panel joined to a portion located; a resin outer panel forming an internal space between the two panels and the inner panel; and a window panel closing the window opening between the upper panel and the lower panel, The rear panel of the upper panel covers an assembly structure of a vehicle back door that constitutes a rear spoiler of a hollow structure that protrudes rearward of the vehicle so as to cover the upper edge of the window panel. is there.

That is, according to the first aspect of the present invention, the rear spoiler has a shape in which the upper side of the spoiler with the window panel side opened, and a lower cover panel that is attached so as to cover the open side of the upper side of the spoiler and the outer surface faces the window panel side. It has a divided configuration. The base end portion of the upper surface of the spoiler located on the vehicle front side of the upper end of the window panel extends in the vehicle width direction, and the internal space between the upper panel and the inner panel is defined as the internal space of the rear spoiler and the rest in the vehicle longitudinal direction. A partition wall portion that partitions into a space is projected toward the inner panel. An adhesive portion that is bonded to the inner panel and overlaps the upper edge portion of the window opening is provided at the distal end portion of the partition wall portion. And the 1st invention adhere | attaches the adhesion part of a partition wall part on the upper edge part of the window opening in an inner panel, Then, it utilizes the space of the open side of a spoiler upper surface part with respect to the adhesion part of this partition wall part. After the upper edge portion of the window panel is bonded, the lower cover panel is attached to the upper surface portion of the spoiler and the partition wall portion.

  According to a second aspect of the invention, in the vehicle back door assembly structure according to the first aspect of the invention, the lower cover panel covers the adhesive portion of the window panel with the adhesive portion of the partition wall portion and conceals the upper terminal of the window panel. It has the part.

  According to a third aspect of the present invention, in the vehicle back door assembly structure according to the first or second aspect of the invention, the lower cover panel is accommodated in the inner space of the rear spoiler before the lower cover panel is attached to the upper surface of the spoiler and the partition wall. It is characterized by the fact that equipped equipment parts are incorporated.

  4th invention is the assembly structure of the vehicle back door any one of 1st-3rd invention, The adhesion part of a partition wall part is the upper edge part of the window opening in an inner panel, and the upper edge of a window panel And a configuration located between the two parts. The fourth aspect of the invention is characterized in that, of the bonded portions of the partition wall portion, the vehicle inner surface is bonded to the inner panel, and the vehicle outer surface is bonded to the upper edge portion of the window panel.

  According to a fifth aspect of the present invention, in the vehicle back door assembly structure according to any one of the first to third aspects, the adhesive portion of the partition wall portion extends in parallel with the adhesive surface at the upper edge portion of the window panel. It has the structure branched into the adhesive piece and the 2nd adhesive piece extended toward an inner panel inside a vehicle rather than this 1st adhesive piece. The inner panel is disposed opposite to the inner surface of the second adhesive piece and extends in the vehicle width direction. The inner panel is disposed with a gap on the outer side of the opposed protrusion and is directed downward. Accordingly, a pressing rib having a guide surface extending toward the opposing protruding portion is provided. In the fifth aspect of the invention, the first adhesive piece is bonded to the upper edge of the window panel, and the second adhesive piece is inserted into the gap between the opposing protruding portion and the pressing rib. By being guided by the guide surface of the rib, it is pressed toward the opposing ridge and is bonded to the opposing ridge.

  According to the first invention, the partition wall in which the rear spoiler is divided into the upper surface portion of the spoiler and the lower cover panel, and is bonded to the upper edge portion of the window opening in the inner panel before the lower cover panel is attached to the upper surface portion of the spoiler and the partition wall portion. Since the upper edge of the window panel is bonded to the adhesive part of the window using the space on the open side of the upper surface of the spoiler, that is, the space that is the internal space of the rear spoiler, the rear spoiler is attached to the upper edge of the window panel. Even if it has a design shape that protrudes toward the rear of the vehicle so as to cover, a space for bonding the window panel can be secured, and the rear spoiler does not get in the way when the window panel is attached. This eliminates the manufacturing restrictions that the rear spoiler design shape receives in order to secure the bonding operation of the window panel, thereby increasing the degree of freedom in designing the back door.

  According to the second invention, since the upper terminal of the window panel is concealed by the concealing portion of the lower cover panel, the gap between the partition wall portion and the upper terminal of the window panel is not visually recognized, and the back door The appearance can be improved.

  According to the third aspect of the present invention, since the equipment parts are pre-installed in the lower cover panel before the lower cover panel is attached to the upper surface part of the spoiler and the partition wall part, the work of attaching the equipment parts to the rear spoiler can be facilitated. It is also possible to change the equipment parts simply by changing the lower cover panel.

  According to the fourth invention, the bonding portion of the partition wall portion is sandwiched between the upper edge portion of the window opening in the inner panel and the upper edge portion of the window panel, and both surfaces of the bonding portion are the inner panel and the window. Since it has a sandwich structure bonded to each panel, the rigidity of the back door corresponding to the upper edge of the window panel can be improved, and the partition wall can be firmly bonded to the inner panel and the window panel. Can do.

  According to 5th invention, the 2nd adhesive piece of a partition wall part is pressed by the opposing rib part side by a press rib by inserting in the clearance gap between an opposing protrusion part and a press rib, and an opposing protrusion. Since the second bonding part of the partition wall part is bonded to the inner panel, the partition of the outer surface of the upper panel can be separated without inserting a holding jig into the open side space of the upper part of the spoiler. The second bonding portion can be easily bonded to the inner panel simply by pressing the corresponding portion of the wall portion, and the bonding jig can be simplified.

FIG. 1 is a perspective view of a vehicle back door according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the vehicle back door according to the first embodiment of the present invention. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. FIG. 5A is a view corresponding to FIG. 3 illustrating an operation of bonding the upper panel to the inner panel according to the first embodiment of the present invention. FIG. 5B is a view corresponding to FIG. 3 showing the window panel bonding operation according to the first embodiment of the present invention. FIG. 6 is a view corresponding to FIG. 4 of a vehicle back door according to a modification of the first embodiment of the present invention. FIG. 7 is a view corresponding to FIG. 3 of the vehicle back door according to the second embodiment of the present invention. FIG. 8 is an enlarged perspective view of a portion surrounded by A in FIG.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. The following embodiments are essentially preferable examples, and are not intended to limit the scope of the present invention, its application, or its use. In the present specification, 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 is referred to as “left”, and the right side is referred to as “right”.

Embodiment 1 of the Invention
FIG. 1 is a perspective view of a vehicle back door 1 according to the first embodiment. FIG. 2 is an exploded perspective view of the vehicle back door 1. 3 is a cross-sectional view taken along line III-III in FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.

  The vehicle back door 1 is for opening and closing a back door opening provided at a rear portion of a vehicle body of a hatchback vehicle. The upper part of the back door 1 is attached to the upper part of the vehicle via a hinge (not shown) having an axis extending in the vehicle width direction. The back door 1 is configured to open and close the back door opening by rotating up and down around the hinge axis in this attached state.

  As shown in FIGS. 1 and 2, the back door 1 is made of a resin inner panel 3 located on the vehicle inner side (front side), a resin outer panel 5 located on the vehicle outer side (rear side), and made of glass or resin. Window panel 7.

  The inner panel 3 is a single piece, and includes, for example, a heat containing fiber reinforcing material such as polypropylene (PP-GF) or carbon fiber-containing polypropylene (PP-CF). It consists of a plastic resin and is molded by injection molding or the like. A substantially rectangular window opening 9 extending left and right is provided in the upper half portion of the inner panel 3.

  Further, a bent portion 11 extending in the vehicle width direction is provided in a portion near the lower edge portion of the window opening 9 in the lower half portion of the inner panel 3. A portion of the inner panel 3 positioned below the bent portion 11 stands so as to extend in a substantially vertical direction, while a portion positioned above the bent portion 11 extends obliquely forward toward the upper side. So as to be inclined.

  An inner standing wall 13 is integrally protruded from the periphery of the window opening 9 of the inner panel 3 over the entire circumference so as to rise to the outer panel 5 side. An inner flange 15 for joining is integrally provided at the protruding end of the inner standing wall 13 so as to project inward of the window opening 9. The inner flange 15 is formed over the entire circumference of the inner standing wall 13.

  Further, an outer standing wall 17 is integrally projected from the outer peripheral edge of the inner panel 3 over the entire circumference so as to rise to the outer panel 5 side. An outer flange 19 for joining is integrally provided at the protruding end of the outer standing wall 17 so as to project outward from the inner panel 3. The outer flange 19 is formed over the entire circumference of the outer standing wall 17.

  The outer panel 5 is divided into upper and lower parts, and includes an upper panel 21 located on the upper side and a lower panel 23 located on the lower side. The upper panel 21 and the lower panel 23 are made of, for example, a talc-containing polypropylene (PP-T; Polypropylene Talc) or a resin in which ethylene propylene diene rubber (EPDM) is mixed. The window panel 7 is disposed between the upper panel 21 and the lower panel 23 and closes the window opening 9 of the inner panel 3.

  The upper panel 21 is formed in a strip shape that is elongated left and right when viewed from above, and covers a portion of the inner panel 3 that is located above the window opening 9 in the same portion as shown in FIGS. 3 and 4. The inner space S is formed between the inner panel 3 and the inner panel 3. The upper edge portion of the upper panel 21 is bonded to the upper side portion of the outer flange 19 of the inner panel 3 with an adhesive 25 such as urethane adhesive. Side edge portions on both the left and right sides of the upper panel 21 are respectively bonded to corresponding side portions of the outer flange 19 with an adhesive 25.

  The vehicle rear end portion of the upper panel 21 forms a hollow rear spoiler 27 that protrudes rearward of the vehicle so as to cover the upper edge of the window panel 7. The rear spoiler 27 is divided into a spoiler upper surface portion 29 having a shape in which the window panel 7 side is opened, and a lower cover panel 31 attached so as to cover the open side of the spoiler upper surface portion 29. The spoiler upper surface portion 29 constitutes an upper surface portion of the rear spoiler 27, and is formed integrally with a front side portion 21a that faces a portion of the upper panel 21 that is located on the upper front side of the window opening 9 in the inner panel 3, and this front side The portion 21a is gently inclined downward toward the rear of the vehicle.

  A rear end surface portion 33 is provided at the rear end portion (projecting end portion) of the spoiler upper surface portion 29 so as to be bent downward and hang down. The rear end surface portion 33 is formed with a locking claw 35 protruding forward. On the other hand, at the base end portion of the spoiler upper surface portion 29, a partition wall portion 37 extending in the vehicle width direction is projected. The partition wall portion 37 extends obliquely rearward toward the inner panel 3 side, and the internal space S between the upper panel 21 and the inner panel 3 is divided into the internal space s1 of the rear spoiler 27 and the other back door internal space s2. It is divided into and.

  The distal end portion of the partition wall portion 37 is provided with an adhesive piece 39 as an adhesive portion that is bent and extended rearward, and a positioning piece 41 that branches from the base end portion of the adhesive piece 39 and extends downward in the front. Yes. The adhesive piece 39 is formed over the entire length of the partition wall portion 37 in the vehicle width direction, and the vehicle inner surface (lower surface) is adhered to the upper side portion of the inner flange 15 of the inner panel 3 with the adhesive 25. It overlaps with the upper edge of the window opening 9. The positioning piece 41 contacts the portion of the inner standing wall 13 located on the upper front side of the window opening 9 from the front side to position the adhesive piece 39.

  A character line 43 extending in the vehicle width direction is formed in a concave line on a portion of the outer surface of the upper panel 21 corresponding to the partition wall portion 37. As a result, even if sink marks are generated on the outer surface of the upper panel 21, they are not conspicuous. The lower cover panel 31 is attached to the spoiler upper surface portion 29 and the partition wall portion 37 to constitute the upper panel 21. The lower cover panel 31 will be described in detail later.

  As shown in FIG. 2, the lower panel 23 has a shape corresponding to the lower half portion of the inner panel 3 and is bent following the bent portion 11 of the inner panel 3. Also, a lower portion is covered and joined to the same portion, and an internal space is formed with the inner panel 3. A step 45 that is recessed forward is provided on the entire upper edge of the lower panel 23. The outer peripheral edge portion of the lower panel 23 is adhered to the lower side portion of the inner flange 15 of the inner panel 3 and the lower side portion and the left and right side portions of the outer flange 19 of the inner panel 3 with an adhesive 25. Yes. At the center of the lower panel 23, a number plate mounting portion 47 is provided so as to be recessed forward.

  The window panel 7 is formed in a shape that is substantially the same as the portion of the upper half of the inner panel 3 excluding the corresponding portion of the outer panel 5, for example, a curved shape so that the lower side of the rectangle that extends to the left and right protrudes downward. . Although not shown, an area corresponding to the window opening 9 in the window panel 7 is a transparent window area, and an outer area thereof is a concealment area concealed by a concealment layer made of black ceramics or the like.

  An upper edge portion of the window panel 7 is bonded to an outer surface (upper surface) of the bonding piece 39 of the partition wall portion 37 with an adhesive 49. The lower edge portion of the window panel 7 is fitted into the stepped portion 45 of the lower panel 23 and bonded with an adhesive 49. Further, the side edge portions on the left and right sides of the window panel 7 are bonded to the left and right side end portions of the inner flange 15 and the outer flange 19 of the inner panel 3 with an adhesive 25. As described above, the window panel 7 is attached to the inner panel 3 and the outer panel 5 from the rear side of the vehicle, and is attached in a horizontally lying posture.

  As shown in FIGS. 3 and 4, the lower cover panel 31 includes an attachment surface portion 51 that extends along the partition wall portion 37 and a spoiler lower surface portion 53 that constitutes a lower surface portion of the rear spoiler 27.

  A cylindrical mounting boss 55 having a screw hole (not shown) penetrating the mounting surface portion 51 is provided on the mounting surface portion 51 of the lower cover panel 31 so as to project toward the internal space s 1 of the rear spoiler 27. A plurality of the mounting bosses 55 are provided at intervals in the vehicle width direction. Insertion holes (not shown) are formed at locations corresponding to the screw holes of the mounting bosses 55 in the partition wall portion 37. The mounting surface portion 51 is screwed into the partition wall portion 37 by inserting a metal fixing bolt 57 through which the insertion hole of the partition wall portion 37 is inserted from the inner panel 3 side into the screw hole of each mounting boss 55. Has been. A work hole 58 for performing a screwing operation of the lower cover panel 31 by the fixing bolt 57 is provided in a portion of the outer standing wall 17 of the inner panel 3 facing the partition wall portion 37.

  The spoiler lower surface portion 53 of the lower cover panel 31 includes a concealing portion 59 extending from the lower end of the attachment surface portion 51 to the rear lower side, and an exposed surface portion 61 extending rearward from the rear end of the concealing portion 59. The concealing part 59 covers a part of the window panel 7 that is bonded to the adhesive piece 39 of the partition wall part 37 with a slight gap, thereby concealing the upper terminal of the window panel 7. Thereby, the clearance gap between the partition wall part 37 and the upper side terminal of the window panel 7 is not visually recognized, but the appearance of the back door 1 improves. The exposed surface portion 61 is curved so that a portion near the concealing portion 59 forms a convex surface on the upper side, has a shape extending straight rearward from the curved portion, and its lower surface is exposed to the rear of the vehicle.

  At the rear end portion (protruding end portion) of the exposed surface portion 61, a mounting piece 63 that is bent upward and is erected is provided. The attachment piece 63 is formed with a locking hole 64 penetrating in the front-rear direction. The lower cover panel 31 is attached to the spoiler upper surface portion 29 by engaging the engagement holes 64 with the engagement claws 35 of the rear end surface portion 33 of the spoiler upper surface portion 29. Thus, the rear spoiler 27 has a design in which the spoiler lower surface 53 is close to the upper edge of the window panel 7, the space between the lower cover panel 31 and the window panel 7 is relatively narrow, and the window panel 7 is approached. It has a shape.

  As shown in FIG. 4, a high-mount stop lamp 65, which is an equipment component, is accommodated in a central portion in the vehicle width direction in the internal space s1 of the rear spoiler 27. The high mount stop lamp 65 is assembled to the lower cover panel 31 so as to be exposed rearward from the rear end portion of the lower cover panel 31.

  A mounting boss 69 having a screw hole (not shown) is provided on the exposed surface portion 61 of the lower cover panel 31 so as to project toward the internal space s 1 of the rear spoiler 27. Further, an attachment piece 71 for assembling to the lower cover panel 31 is provided at the front portion of the high mount stop lamp 65. The mounting piece 71 extends to a position corresponding to the protruding end of the mounting boss 69 provided on the exposed surface portion 61. An insertion hole (not shown) corresponding to the screw hole of the mounting boss 69 is formed in the mounting piece 71. The high mount stop lamp 65 is assembled to the lower cover panel 31 by inserting a metal fixing bolt 73 through which the insertion hole of the mounting piece 71 is inserted into the screw hole of the mounting boss 69.

  Out of the mounting surface portion 51 and the partition wall portion 37 of the lower cover panel 31, lead holes 75 and 76 for pulling out a harness 74 for supplying power to the high mount stop lamp 65 are provided in front of the high mount stop lamp 65. Are formed respectively. The attachment surface portion 51 of the lower cover panel 31 is in contact with the peripheral portion of the drawer hole 76 of the partition wall portion 37 via a sealing material 77. Further, the peripheral edge portion of the drawer hole 75 in the mounting surface portion 51 of the lower cover panel 31 protrudes into the internal space s1 of the rear spoiler 27, and a seal rubber 79 surrounds and holds the harness 74 in the protruding portion of the mounting surface portion 51. By providing the seal rubber 79 and the harness 74 in close contact with each other, entry of water or dust into the back door internal space s2 is prevented.

  Next, an assembling procedure of the back door 1 having the above configuration will be described with reference to FIGS. 5 (a) and 5 (b). FIG. 5A is a view corresponding to FIG. 3 illustrating the bonding operation of the upper panel 21 to the inner panel 3. FIG. 5B is a view corresponding to FIG. 3 illustrating an operation of bonding the window panel 7 to the inner panel 3 and the outer panel 5.

  In order to assemble the back door 1, first, the upper panel 21 and the lower panel 23 of the outer panel 5 are attached to the inner panel 3 by bonding with the adhesive 25. At this time, in the operation of bonding the upper panel 21 to the inner panel 3, after applying the adhesive 25 to the inner flange 15 and the outer flange 19 of the inner panel 3, as shown in FIG. While supporting the outer flange 19 from below with supporting jigs 101 and 103 for bonding work, the upper edge portion of the upper panel 21 and the side edge portions on both the left and right sides are set to the outer flange 19, and the adhesive piece 39 of the partition wall portion 37. The upper panel 21 is bonded to the inner panel 3 by pressing the adhesive material 25 onto the upper side of the inner flange 15 with the holding jigs 105 and 107 for bonding work. At this stage, the lower cover panel 31 is not attached to the partition wall portion 37 and the spoiler upper surface portion 29 of the upper panel 21, and the spoiler upper surface portion 29 is in a state where the window panel 7 side is opened.

  Next, the window panel 7 is adhered and attached to the inner panel 3 and the outer panel 5 that are adhered to each other. In the bonding operation of the window panel 7, the state in which the inner flange 15 and the outer flange 19 of the inner panel 3 are supported by the supporting jigs 101 and 103 is maintained, and the upper surface of the bonding piece 39 of the partition wall portion 37 in the upper panel 21 is maintained. After the adhesive 49 is applied, the upper edge of the window panel 7 is attached to the adhesive piece 39 of the partition wall 37, the lower edge of the window panel 7 is applied to the step 45 of the lower panel 23, and the left and right sides of the window panel 7 are applied. By pressing the side edges to the corresponding side edges of the inner flange 15 and the outer flange 19 of the inner panel 3 with the holding jig 109 for bonding work, the inner panel 3 and The window panel 7 is bonded to the outer panel 5. At this time, as shown in FIG. 5B, the upper edge portion of the window panel 7 is inserted into the space on the open side of the spoiler upper surface portion 29, that is, the space serving as the internal space s 1 of the rear spoiler 27. The holding jig 109 inserted in the same space is pressed. Thus, the upper edge portion of the window panel 7 is bonded to the adhesive piece 39 of the partition wall portion 37 using the space on the open side of the spoiler upper surface portion 29.

  After that, the insertion hole of the partition wall portion 37 of the upper panel 21 and the screw hole of the mounting boss 55 of the lower cover panel 31 are aligned, and the locking hole 64 of the mounting piece 63 of the lower cover panel 31 is fitted to the spoiler upper surface portion 29. The lower cover panel 31 is temporarily fixed to the spoiler upper surface portion 29 by engaging the locking claws 35 of the rear end surface portion 33. Next, the fixing bolt 57 is brought into the internal space s <b> 2 between the upper panel 21 and the inner panel 3 from the work hole 58 of the inner panel 3, and the fixing bolt 57 is inserted through the insertion hole of the partition wall portion 37 to attach the mounting boss 55. The mounting surface portion 51 of the lower cover panel 31 is fixed to the partition wall portion 37. In this way, the lower cover panel 31 is attached to the spoiler upper surface portion 29 to constitute the rear spoiler 27. Before the lower cover panel 31 is attached to the spoiler upper surface portion 29 and the partition wall portion 37, a high mount stop lamp 65 is assembled to the lower cover panel 31 in advance. Through the above operation, the back door 1 shown in FIG. 1 is assembled.

-Effect of Embodiment 1-
According to the first embodiment, even if the rear spoiler 27 has a design shape protruding rearward of the vehicle so as to cover the upper edge portion of the window panel 7, a space for performing the bonding operation of the window panel 7 can be secured. The rear spoiler 27 does not get in the way when the window panel 7 is attached. This eliminates the manufacturing restrictions that the design shape of the rear spoiler 27 receives in order to ensure the bonding operation of the window panel 7, and can increase the degree of freedom in designing the back door 1.

  In addition, before the lower cover panel 31 is attached to the spoiler upper surface portion 29 and the partition wall portion 37, the high mount top lamp 65 is incorporated in the lower cover panel 31 in advance, so that the high mount top lamp 65 is attached to the rear spoiler 27. In addition, it is possible to easily change equipment components such as the high-mount top lamp 65 by simply changing the lower cover panel 31.

  Further, the adhesive piece 39 of the partition wall portion 37 is sandwiched between the upper edge portion of the window opening 9 in the inner panel 3 and the upper edge portion of the window panel 7, and both surfaces of the adhesive piece 39 are connected to the inner panel 3 and the inner panel 3. Since it has a sandwich structure bonded to the window panel 9, it is possible to improve the rigidity of a portion of the back door 1 corresponding to the upper edge of the window panel 9, and the partition wall portion 37 is connected to the inner panel 3 and the window panel 9. And can be firmly bonded.

-Modification of Embodiment 1-
FIG. 6 is a view corresponding to FIG. 4 of the back door 1 according to this modification. In the first embodiment, the inner standing wall 13 protrudes from the peripheral edge portion of the window opening 9 of the inner panel 3. However, in the present modification, the inner standing wall 13 is not protruded, The peripheral portion of the window opening 9 of the inner panel 3 includes a flat portion 81 that extends straight from the base end portion side of the outer standing wall 17 toward the window opening 9, and an end that divides the window opening 9 continuously from the flat portion 81. It is comprised with the edge part 82. FIG. The end edge portion 82 is bent from the flat portion 81 and extends to the upper rear side of the window opening 9.

  The inner flange 15 is provided so as to protrude from the end edge 82 to the outside of the window opening 9 in the peripheral portion of the window opening 9 of the inner panel 3. A plurality of reinforcing ribs 83 connecting the flat portion 81 and the inner flange 15 are provided between the flat portion 81 and the inner flange 15 after the peripheral portion of the window opening 9 of the inner panel 3 with a space around the window opening 9. Is provided.

  According to such a configuration, by adopting the flat portion 81 at the peripheral edge portion of the window opening 9 of the inner panel 3, it is possible to reduce the level difference visible from the vehicle interior as compared with the case where the inner standing wall 13 is provided. The appearance from the inside of the vehicle can be improved.

<< Embodiment 2 of the Invention >>
The vehicle back door 1 according to the second embodiment includes a partition wall portion 37, an adhesive piece 39 of the partition wall portion 37, an upper edge portion of the window opening 9 of the inner panel 3, and an upper edge portion of the window panel 7. The adhesive structure and the structure for attaching the lower cover panel 31 to the partition wall portion 37 are different from those of the first embodiment. In addition, in this embodiment, since it is comprised similarly to the said Embodiment 1 about another structure, only a different part is demonstrated, and the same component location of the said Embodiment 1 based on FIGS. 1-5 is demonstrated. The detailed description will be omitted here.

  FIG. 7 is a view corresponding to FIG. 3 of the back door 1 according to the second embodiment. FIG. 8 shows a state in which the second adhesive piece 39B of the partition wall portion 37 is inserted into the gap g between the opposing protrusion 87 and each pressing rib 89 in the operation of bonding the upper panel 21 to the inner panel 3. It is an expansion perspective view of the part enclosed by A of FIG.

  In the back door 1 of the present embodiment, the character line 43 is not formed on the outer surface of the upper panel 21, but the base end portion of the partition wall portion 37 provided in the upper panel 21 is thinner than the other portions. A thin portion 44 is provided. This suppresses the occurrence of sink marks at a portion corresponding to the partition wall portion 37 in the outer surface of the upper panel.

  In addition, the mounting surface portion 51 of the lower cover panel 31 has a U-shaped spring nut 85 attached to the upper end portion of the mounting surface portion 51 instead of having the mounting boss 55, and a partition wall is formed using the spring nut 85. The fixing wall 57 is screwed to the partition wall portion 37 with a fixing bolt 57 inserted into the insertion hole of the portion 37. A seal washer 86 is sandwiched between the head of the fixing bolt 57 and the partition wall portion 37. This prevents entry of water, dust, and the like from the insertion hole of the partition wall portion 37 into the back door internal space s2.

  In addition, the adhesive piece 39 of the partition wall portion 37 includes a first adhesive piece 39A extending in parallel with the adhesive surface at the upper edge of the window panel 7, and toward the inner panel 3 on the vehicle inner side than the first adhesive piece 39A. It branches off to the extending second adhesive piece 39B. The first adhesive piece 39A and the second adhesive piece 39B are provided over the entire length of the partition wall portion 37 in the vehicle width direction.

  The inner panel 3 has an opposing ridge 87 disposed to face the inner surface (left side in FIG. 7) of the second adhesive piece 39B, and the outer rim (in FIG. On the right side), pressing ribs 89 are provided so as to be spaced from each other. The opposing protrusion 87 extends in the vehicle width direction in parallel with the second adhesive piece 39B. A plurality of reinforcing ribs 91 project from the front side of the opposing protruding portion 87 at intervals in the vehicle width direction. A plurality of pressing ribs 89 are provided at intervals in the vehicle width direction so as to correspond to the reinforcing ribs 91 in the front-rear direction. Each of the pressing ribs 89 is formed in a substantially trapezoidal shape when viewed from the side, and a contact surface 89a extending toward the opposing protruding portion 87 toward the lower side is in contact with the first adhesive piece 39A. Each has a surface 89b on the vehicle exterior side.

  As shown in FIG. 8, the second adhesive piece 39 </ b> B is inserted from above into the gap g between the opposing protrusion 87 and each pressing rib 89, and is guided to the guide surface 89 a of each pressing rib 89 in the insertion process. In this way, it is pressed toward the opposing ridge 87 and bonded to the opposing ridge 87 by the adhesive 25. The bonding operation of the second bonding piece 39B to the facing protrusion 87 can be performed only by pressing the corresponding portion of the partition wall portion 37 on the outer surface of the upper panel 21 to the inner panel 3 side. On the other hand, the first adhesive piece 39 </ b> A is in contact with the contact surface 89 b of each pressing rib 89 and is bonded to the upper edge portion of the window panel 7 with the adhesive 49.

-Effect of Embodiment 2-
According to the second embodiment, it is possible to bond the second adhesive piece 39B of the partition wall portion 37 to the inner panel 3 without inserting the holding jig 109 into the space on the open side of the spoiler upper surface portion 29. The 37 second adhesive pieces 39B can be easily bonded to the inner panel 3, and the pressing jig for bonding work for bonding the second adhesive pieces 29B can be simplified.

  In the first embodiment, the high-mount stop lamp 65 is accommodated in the internal space s1 of the rear spoiler 27. However, the present invention is not limited to this, and the high-mount stop lamp 65 is replaced in the internal space s1 of the rear spoiler 27. Alternatively, a window washer nozzle, a back camera, or the like may be accommodated as an equipment component. These equipment parts are assembled to the lower cover panel 31 before attaching the lower cover panel 31 to the spoiler upper surface part 29 and the partition wall part 37 from the viewpoint of facilitating the installation work and simplifying the replacement of the equipment parts. Is preferred.

  Further, in the first embodiment, the attachment surface portion 51 of the lower cover panel 31 is attached to the partition wall portion 37 by screwing, and the attachment piece 63 of the lower cover panel 31 is attached to the spoiler upper surface portion 29 by claw engagement. However, the present invention is not limited to this, and other known attachments such as an adhesive fixing the attachment surface portion 51 to the partition wall portion 37 and the attachment means 63 to the spoiler upper surface portion 29 are attached to the attachment means. Means can also be employed.

  As described above, the present invention is useful for an assembly structure of a vehicle back door, and in particular, it is desired to increase the degree of freedom of design of the back door by eliminating manufacturing restrictions on the design shape of the rear spoiler. Suitable for vehicle back door assembly structure.

S inner space between inner panel and upper panel s1 inner space of rear spoiler s2 inner space of back door 1 back door 3 inner panel 5 outer panel 7 window panel 9 window opening 21 upper panel 23 lower panel 25 adhesive 27 rear spoiler 29 spoiler upper surface 31 lower cover Panel 37 Partition wall part 39 Adhesive piece 39A 1st adhesive piece 39B 2nd adhesive piece 41 Positioning piece 49 Adhesive material 59 Concealing part 65 High mount stop lamp (equipment parts)
87 Opposite protrusion 89 Pressing rib 89a Guide surface

Claims (5)

A resin inner panel (3) provided with a window opening (9);
Of the inner panel (3), the upper panel (21) joined to the portion located above the window opening (9) and the portion located below the window opening (9). A resin outer panel (5) having a lower panel (23) and forming an internal space (S) between the two panels (21, 23) and the inner panel (3);
A window panel (7) for closing the window opening (9) between the upper panel (21) and the lower panel (23);
The rear panel of the upper panel (21) is an assembly structure of a vehicle back door that constitutes a rear spoiler (27) having a hollow structure projecting rearward of the vehicle so as to cover the upper edge of the window panel (7). And
The rear spoiler (27) is attached so as to cover a spoiler upper surface portion (29) having a shape in which the window panel (7) side is opened, and an open side of the spoiler upper surface portion (29), and an outer surface is the window panel. (7) Divided into the lower cover panel (31) facing the side ,
A base end portion of the upper surface portion (29) of the spoiler located on the vehicle front side with respect to the upper end of the window panel (7) extends in the vehicle width direction, and includes the upper panel (21) and the inner panel (3). A partition wall (37) that divides the inner space (S) between the inner space (s1) of the rear spoiler (27) and the other space (s2) in the vehicle front-rear direction is directed toward the inner panel (3). Projecting
The tip of the partition wall (37) is provided with an adhesive portion (39) that is bonded to the inner panel (3) and overlaps the upper edge of the window opening (9),
The bonding portion (39) of the partition wall portion (37) is bonded to the upper edge portion of the window opening (9) in the inner panel (3), and then the bonding portion (39) of the partition wall portion (37) After adhering the upper edge of the window panel (7) using the space on the open side of the spoiler upper surface (29), the lower cover panel (31) is attached to the spoiler upper surface (29) and the partition wall. An assembly structure of a vehicle back door, characterized in that the vehicle back door is configured to be attached to the portion (37). In the vehicle back door assembly structure according to claim 1,
The lower cover panel (31) is a concealing portion that covers an adhesive portion (39) of the partition wall portion (37) of the window panel (7) and conceals the upper terminal of the window panel (7). (59) An assembly structure for a vehicle back door. In the assembly structure of the vehicle back door according to claim 1 or 2,
The lower cover panel (31) is accommodated in the inner space (s1) of the rear spoiler (27) before the lower cover panel (31) is attached to the spoiler upper surface part (29) and the partition wall part (37). An assembly structure for a vehicle back door, wherein the equipment part (65) is assembled. In the assembly structure of the vehicle back door as described in any one of Claims 1-3,
The bonding portion (39) of the partition wall portion (37) is located between the upper edge portion of the window opening (9) and the upper edge portion of the window panel (7) in the inner panel (3),
Of the bonding part (39) of the partition wall part (37), the inner surface is bonded to the inner panel (3), and the outer surface is bonded to the upper edge of the window panel (7). An assembly structure for a vehicle back door. In the assembly structure of the vehicle back door as described in any one of Claims 1-3,
An adhesive portion (39) of the partition wall portion (37) includes a first adhesive piece (39A) extending in parallel with an adhesive surface at an upper edge portion of the window panel (7), and the first adhesive piece (39A). Branch to the second adhesive piece (39B) extending toward the inner panel (3) on the inside of the vehicle,
The inner panel (3) includes an opposing ridge (87) that faces the vehicle inner surface of the second adhesive piece (39B) and extends in the vehicle width direction, and the opposing ridge (87). And a pressing rib (89) having a guide surface (89a) extending toward the opposing ridge (87) as it goes downward with a gap (g) disposed on the outside of the vehicle,
The first adhesive piece (39A) is bonded to the upper edge of the window panel (7),
The second adhesive piece (39B) is inserted into the gap (g) between the opposed protrusion (87) and the pressing rib (89), and the guide surface of the pressing rib (89) in the insertion process An assembly structure of a vehicular back door, characterized in that it is guided to (89a) and is pressed toward the opposing ridge (87) to be bonded to the opposing ridge (87).

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