JP2014104790A - Back door for vehicle - Google Patents

Back door for vehicle Download PDF

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JP2014104790A
JP2014104790A JP2012257265A JP2012257265A JP2014104790A JP 2014104790 A JP2014104790 A JP 2014104790A JP 2012257265 A JP2012257265 A JP 2012257265A JP 2012257265 A JP2012257265 A JP 2012257265A JP 2014104790 A JP2014104790 A JP 2014104790A
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door
line portion
inner member
width direction
door inner
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JP5903374B2 (en
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Satoshi Gongen
智士 権現
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DaikyoNishikawa Corp
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DaikyoNishikawa Corp
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Abstract

PROBLEM TO BE SOLVED: To prevent intrusion of water which infiltrates between a door inner member and a door outer member adhered to the same intrudes into a vehicle room side from an adhered part.SOLUTION: An upper side boundary line 41 includes the upper outside line part 41a extending to right and left at the lower end of an upper side protruding piece 29a, an upper middle line part 41b extending to linearly upward from the left end of an upper outside line part 41a, and an upper inner side line part 41c extending horizontally toward left side from the top of an upper side middle line part 41b. A first adhesives 33 are set up along the upper side middle line part 41b at the upper step part 39, while a second adhesive 35 are set up on an outside flange 11 and an upper side protruding piece 29a across the upper middle line part 41b.

Description

本発明は、車両用バックドアの改良に関し、詳しくは、樹脂製ドアインナ部材に樹脂製ドアアウタ部材が接着された車両用バックドアにおいて、外部から両部材間に入った水が車室側に浸入するのを防止する技術に関する。   The present invention relates to an improvement in a vehicle back door, and more specifically, in a vehicle back door in which a resin door outer member is bonded to a resin door inner member, water that enters between both members from the outside enters the vehicle compartment side. The present invention relates to technology for preventing

特許文献１には、略矩形板状の樹脂製ドアインナ部材とその上部に接着された樹脂製ドアアッパアウタ部材とを有し、該ドアアッパアウタ部材の下縁車幅方向両端部には、下方に突出する突出片が設けられている一方、上記ドアインナ部材には、当該突出片が嵌め込まれる凹部が形成され、この凹部に突出片が嵌め込まれた状態で、突出片が凹部底面に接着されている外部から車室側への水の浸入を防ぐ迷路構造を設けた車両用バックドアが開示されている。このバックドアでは、突出片とその周りのドアインナ部材との境界ラインから接着剤がはみ出すのを防止するために、接着剤が当該境界ラインよりも内側に塗布されている。   Patent Document 1 includes a substantially rectangular plate-shaped resin door inner member and a resin door upper outer member bonded to the upper portion thereof. On the other hand, the door inner member is formed with a recess into which the projection piece is fitted, and the projection piece is adhered to the bottom surface of the recess with the projection piece fitted into the recess. A vehicular back door provided with a maze structure that prevents water from entering the vehicle compartment from the outside is disclosed. In this back door, the adhesive is applied on the inner side of the boundary line in order to prevent the adhesive from protruding from the boundary line between the protruding piece and the surrounding door inner member.

特開２０１１−２１９０００号公報（段落００３６、００４２、００５２欄、図１、図２、図５）JP 2011-219000 A (paragraphs 0036, 0042, columns 0052, FIG. 1, FIG. 2, FIG. 5)

しかしながら、特許文献１の車両用バックドアでは、上記迷路構造があるが接着剤が上記境界ラインよりも内側に塗布されているので、接着剤と凹部側壁との間に隙間ができる。そうすると、大量の水が浸入した場合にドアインナ部材とドアアウタ部材との間に入った水が上記迷路構造を乗り越えて上記隙間を通って車室側に浸入する虞がある。   However, the vehicular back door of Patent Document 1 has the labyrinth structure, but since the adhesive is applied to the inner side of the boundary line, a gap is formed between the adhesive and the recess side wall. Then, when a large amount of water enters, there is a possibility that the water that has entered between the door inner member and the door outer member gets over the maze structure and enters the vehicle compartment through the gap.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、ドアインナ部材とそれに接着されたドアアウタ部材との間に入った水が接着部から車室側に浸入するのを防止することにある。   The present invention has been made in view of such a point, and the object of the present invention is to allow water that has entered between the door inner member and the door outer member bonded to the door inner member to enter the vehicle compartment side from the bonded portion. It is to prevent.

上記の目的を達成するために、本発明は、ドアインナ部材とドアアウタ部材との接着構造を工夫したものである。   In order to achieve the above object, the present invention devises an adhesive structure between a door inner member and a door outer member.

具体的には、本発明は、窓用開口部が形成された樹脂製ドアインナ部材と、ドアアッパアウタ部材及びドアロアアウタ部材に分割され上記ドアインナ部材に車外側から接着された樹脂製ドアアウタ部材と、上記窓用開口部を覆う窓部材とを備え、上記ドアアッパアウタ部材の外周縁部は、上記ドアインナ部材の上記窓用開口部上側で該窓用開口部上端縁部及び該ドアインナ部材外周縁部に第１接着剤を介して接着され、上記ドアロアアウタ部材の外周縁部は、上記ドアインナ部材の上記窓用開口部下側で該窓用開口部下端縁部及び上記ドアインナ部材外周縁部に上記第１接着剤を介して接着され、上記窓部材の外周縁部は、上記窓用開口部上端縁部側では上記ドアアッパアウタ部材の下端縁部に、上記窓用開口部下端縁部側では上記ドアロアアウタ部材の上端縁部に、上記窓用開口部の車幅方向両側端縁側では上記ドアインナ部材の車幅方向両側端縁部にそれぞれ第２接着剤を介して接着された車両用バックドアを対象とし、次のような解決手段を講じた。   Specifically, the present invention includes a resin door inner member in which an opening for a window is formed, a resin door outer member that is divided into a door upper outer member and a door lower outer member and is bonded to the door inner member from the outside of the vehicle, A window member that covers the window opening, and an outer peripheral edge of the door upper outer member is located on the upper edge of the window opening and the outer periphery of the door inner member on the upper side of the window opening of the door inner member. The outer peripheral edge of the door lower outer member is bonded to the lower edge of the window opening and the outer peripheral edge of the door inner member on the lower side of the window opening of the door inner member. The outer peripheral edge of the window member is bonded to the lower edge of the door upper outer member on the window opening upper edge, and the door lower on the window opening lower edge. For vehicle back doors that are bonded to the upper edge of the Uta member on the both side edges in the vehicle width direction of the window opening by means of a second adhesive, respectively, on both side edges in the vehicle width direction of the door inner member The following solutions were taken.

すなわち、第１の発明は、上記窓部材と上記ドアインナ部材及び上記ドアアウタ部材との接着面は、矩形環状をなし、上記ドアアッパアウタ部材下端縁部の車幅方向両端には、下方に突出する上側突出片が設けられている一方、上記ドアロアアウタ部材上端縁部の車幅方向両端には、上方に突出する下側突出片が設けられ、該下側突出片は、上記上側突出片よりも上記ドアインナ部材の車幅方向外側端から車幅方向内側に離れて配置され、上記ドアインナ部材の上記上側及び下側突出片に対応する部位には、該上側及び下側突出片が嵌め込まれる上側及び下側段落部が形成され、該上側及び下側段落部に該上側及び下側突出片が嵌め込まれた状態で、上記上側突出片とその周りの上記ドアインナ部材とは面一になっていて、両者の上側境界ラインは、該上側突出片の下端において車幅方向に延びる外側ライン部と、該外側ライン部の車幅方向内側端から上方に直線状に延びる中間ライン部と、該中間ライン部上端から車幅方向内側に延びる内側ライン部とを有している一方、上記下側突出片とその周りの上記ドアインナ部材とは面一になっていて、両者の下側境界ラインは、該下側突出片の上端において車幅方向に延びる内側ライン部と、該内側ライン部の車幅方向外側端から下方に直線状に延びる中間ライン部と、該中間ライン部下端から車幅方向外側に延びる外側ライン部とを有し、上記第１接着剤は、上記上側及び下側段落部において上記中間ライン部に沿って設けられ、上記第２接着剤は、該中間ライン部を跨いで上記ドアインナ部材及び上記ドアアウタ部材上に設けられていることを特徴とする。   That is, according to the first aspect of the present invention, the bonding surfaces of the window member, the door inner member, and the door outer member have a rectangular ring shape, and project downward from both ends in the vehicle width direction of the lower edge of the door upper outer member. While an upper protruding piece is provided, a lower protruding piece that protrudes upward is provided at both ends in the vehicle width direction of the upper edge of the door lower outer member, and the lower protruding piece is higher than the upper protruding piece. The upper and lower protrusions that are disposed away from the vehicle width direction outer side end of the door inner member in the vehicle width direction and that correspond to the upper and lower protruding pieces of the door inner member are fitted into the upper and lower protruding pieces. In the state in which the side paragraph is formed and the upper and lower protruding pieces are fitted in the upper and lower paragraphs, the upper protruding piece and the door inner member around the upper protruding piece are flush with each other. Upper boundary of The outer line portion extending in the vehicle width direction at the lower end of the upper protruding piece, the intermediate line portion extending linearly upward from the inner end in the vehicle width direction of the outer line portion, and the vehicle width from the upper end of the intermediate line portion The lower protruding piece and the door inner member around the lower protruding piece are flush with each other, and both lower boundary lines of the lower protruding piece An inner line portion extending in the vehicle width direction at the upper end, an intermediate line portion extending linearly downward from the outer end in the vehicle width direction of the inner line portion, and an outer line portion extending outward in the vehicle width direction from the lower end of the intermediate line portion The first adhesive is provided along the intermediate line portion in the upper and lower paragraph portions, and the second adhesive straddles the intermediate line portion and the door inner member and the door outer member Provided on And said that you are.

第２の発明は、上記第１の発明において、上記ドアインナ部材並びに上記上側及び下側突出片の少なくとも１つの上記中間ライン部に対応する部位には、該中間ライン部側に開口する切欠部が設けられ、上記第１接着剤及び上記第２接着剤は、該切欠部において接合していることを特徴とする。   According to a second invention, in the first invention, a portion corresponding to the intermediate line portion of the door inner member and at least one of the upper and lower protruding pieces has a notch portion opened to the intermediate line portion side. It is provided that the first adhesive and the second adhesive are joined at the notch.

第１の発明によれば、ドアインナ部材の上側段落部に上側突出片が嵌め込まれた状態で、該上側突出片とその周りのドアインナ部材との上側境界ラインが、該上側突出片の下端において車幅方向に延びる外側ライン部と、該外側ライン部の車幅方向内側端から上方に直線状に延びる中間ライン部とを有しており、この中間ライン部を上下方向、すなわち重力方向に長く設定することができる。したがって、外部から入った水は、境界ラインに沿って車室側に進入しようとするが、中間ライン部が重力方向に長く延びているので、重力に逆らって中間ライン部に沿って上方に進入するのは困難である。よって、水が境界ラインに沿って車室側に進入するのを防止することができる。一方、下側突出片とその周りのドアインナ部材との下側境界ラインも上側境界ラインと同様に形成されているので、水が当該下側境界ラインに沿って車室側に進入するのを防止することができる。   According to the first invention, the upper boundary line between the upper protruding piece and the door inner member around the upper protruding piece is fitted at the lower end of the upper protruding piece with the upper protruding piece fitted in the upper paragraph of the door inner member. It has an outer line portion extending in the width direction and an intermediate line portion extending linearly upward from the inner end in the vehicle width direction of the outer line portion, and this intermediate line portion is set long in the vertical direction, that is, in the direction of gravity. can do. Therefore, water entering from outside tries to enter the passenger compartment side along the boundary line, but the intermediate line portion extends long in the direction of gravity, so it enters upward along the intermediate line portion against gravity. It is difficult to do. Therefore, it is possible to prevent water from entering the passenger compartment side along the boundary line. On the other hand, since the lower boundary line of the lower protruding piece and the door inner member around it is formed in the same manner as the upper boundary line, water can be prevented from entering the passenger compartment along the lower boundary line. can do.

しかも、第１接着剤が上側及び下側段落部において中間ライン部に沿って設けられ、第２接着剤が中間ライン部を跨いでドアインナ部材及びドアアウタ部材上に設けられているので、第１接着剤及び第２接着剤が中間ライン部で重なって両者間の隙間を塞ぐか又は狭くした部分を上下方向に長く設定することができる。したがって、水が中間ライン部に沿って重力に逆らって上方に進入するのをより確実に防止することができる。   In addition, the first adhesive is provided along the intermediate line portion in the upper and lower paragraphs, and the second adhesive is provided on the door inner member and the door outer member across the intermediate line portion. The portion where the agent and the second adhesive overlap at the intermediate line portion to close or narrow the gap between them can be set long in the vertical direction. Therefore, it can prevent more reliably that water approachs against gravity along the intermediate line part.

第２の発明によれば、ドアインナ部材並びに上側及び下側突出片の少なくとも１つの中間ライン部に対応する部位に中間ライン部側に開口する切欠部が設けられ、第１接着剤及び第２接着剤が切欠部において接合しているので、この接合部分で水の進入路を完全に塞ぐことができる。   According to the second invention, the door inner member and the cutout portion that opens to the intermediate line portion side are provided at a portion corresponding to at least one intermediate line portion of the upper and lower protruding pieces, and the first adhesive and the second adhesive are provided. Since the agent is bonded at the notch, the water entrance can be completely blocked at the bonded portion.

実施形態に係る車両用バックドアの分解斜視図である。It is a disassembled perspective view of the back door for vehicles concerning an embodiment. ドアインナ部材にドアアウタ部材を接着した状態における図１のII部拡大平面図である。It is the II section enlarged plan view of Drawing 1 in the state where the door outer member was pasted up to the door inner member. 窓部材を接着した状態における図２のＡ−Ａ線矢視相当断面図である。FIG. 3 is a cross-sectional view corresponding to the line AA in FIG. 2 in a state where a window member is bonded. 窓部材を接着した状態における図２のＢ−Ｂ線矢視相当断面図である。FIG. 3 is a cross-sectional view corresponding to the line BB in FIG. 2 in a state in which a window member is bonded. 窓部材を接着した状態における図２のＣ−Ｃ線矢視相当断面図である。It is CC sectional view equivalent to the CC arrow of FIG. 2 in the state which bonded the window member. 窓部材を接着した状態における図２のＤ−Ｄ線矢視相当断面図である。FIG. 3 is a cross-sectional view corresponding to the line D-D in FIG. 2 in a state where a window member is bonded. ドアインナ部材にドアアウタ部材を接着した状態における図１のVII部拡大平面図である。FIG. 7 is an enlarged plan view of a portion VII in FIG. 1 in a state in which a door outer member is bonded to a door inner member. 窓部材を接着した状態における図７のＥ−Ｅ線矢視相当断面図である。FIG. 8 is a cross-sectional view corresponding to the line EE in FIG. 7 in a state where the window member is bonded. 変形例に係る車両用バックドアの図２相当図である。FIG. 3 is a view corresponding to FIG. 2 of a vehicle back door according to a modification. 窓部材を接着した状態における図９のＢ’−Ｂ’線矢視相当断面図である。FIG. 10 is a cross-sectional view corresponding to the arrow line B′-B ′ in FIG. 9 in a state where the window member is bonded. 窓部材を接着した状態における図９のＤ’−Ｄ’線矢視相当断面図である。FIG. 10 is a cross-sectional view corresponding to the arrow line D′-D ′ in FIG. 9 in a state where the window member is bonded.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本実施形態に係る車両用バックドア（以下、バックドアという）１を示す。このバックドア１は、ハッチバック車の車体（図示せず）後端のバックドア開口部（図示せず）を上下方向に開閉する。上記車体の上記バックドア開口部の左右両側下半部に対応する位置にはウィンカ（図示せず）が設けられていて、このウィンカを車体後方に露出させるために、上記バックドア１の下半部分は下方に行くに従って左右幅が狭くなっている。上記バックドア１は、略矩形状の樹脂製ドアインナ部材３と、該ドアインナ部材３に車外側から組み付けられるドアアウタ部材５と、ガラス製又は樹脂製の窓部材７とからなる。   FIG. 1 shows a vehicle back door (hereinafter referred to as a back door) 1 according to the present embodiment. The back door 1 opens and closes a back door opening (not shown) at the rear end of a vehicle body (not shown) of the hatchback vehicle in the vertical direction. Winkers (not shown) are provided at positions corresponding to the left and right lower halves of the back door opening of the vehicle body, and the lower half of the back door 1 is exposed to the rear of the vehicle body. The width of the part becomes narrower as it goes down. The back door 1 includes a substantially rectangular resin door inner member 3, a door outer member 5 assembled to the door inner member 3 from the outside of the vehicle, and a window member 7 made of glass or resin.

上記ドアインナ部材３は、ＰＰ−ＧＦ（Polypropylene Glass Fiber）、ＰＰ−ＣＦ（Polypropylene Carbon Fiber）等の繊維補強材を含有する熱可塑性樹脂からなる。該ドアインナ部材３は、一枚物であり、上半部分が台形状をなし、下半部分が下方に行くに従って左右幅が狭くなっている本体部８を有し、該本体部８の外周縁全体には、環状の外側立ち壁９が上記ドアアウタ部材５側に立ち上がるように突設され、該外側立ち壁９の突出端全体には、接合用の外側フランジ１１が外側に張り出すように設けられている。上記ドアインナ部材３の上半部分には、左右に延びる窓用開口部１３が形成され、該窓用開口部１３上方には、一対のヒンジ取付部１５，１５が左右に間隔をあけて設けられている。上記窓用開口部１３の内周縁全体には、環状の内側立ち壁１７が上記ドアアウタ部材５側に立ち上がるように突設され、該内側立ち壁１７の突出端全体には、接合用の内側フランジ１９が窓用開口部１３内側に張り出すように設けられている。該内側立ち壁１７下縁と上記外側立ち壁９下縁との間の左右方向中央部には、ナンバープレート（図示せず）照明用のライト（図示せず）が取り付けられるライト取付部２１が形成され、その下端、すなわち外側立ち壁９下縁の左右方向中央には、上記車体に固定されたストライカ（図示せず）に係合・離脱するロック装置（図示せず）が取り付けられるロック装置取付部２３が形成されている。   The door inner member 3 is made of a thermoplastic resin containing a fiber reinforcing material such as PP-GF (Polypropylene Glass Fiber) or PP-CF (Polypropylene Carbon Fiber). The door inner member 3 is a single piece, and has a main body 8 whose upper half is trapezoidal and whose left and right widths become narrower as the lower half goes downward. A ring-shaped outer standing wall 9 is provided so as to rise to the door outer member 5 side as a whole, and an outer flange 11 for joining is provided on the entire protruding end of the outer standing wall 9 so as to project outward. It has been. A window opening 13 extending left and right is formed in the upper half of the door inner member 3, and a pair of hinge mounting portions 15, 15 are provided above the window opening 13 with a space left and right. ing. An annular inner standing wall 17 protrudes from the entire inner peripheral edge of the window opening 13 so as to rise toward the door outer member 5, and a joint inner flange is formed at the entire protruding end of the inner standing wall 17. 19 is provided so as to project inside the window opening 13. A light attachment portion 21 to which a license plate (not shown) illumination light (not shown) is attached is provided at the center in the left-right direction between the lower edge of the inner standing wall 17 and the lower edge of the outer standing wall 9. A lock device (not shown) that is formed and attached to the lower end thereof, that is, the center in the left-right direction of the lower edge of the outer standing wall 9 is engaged with and released from a striker (not shown) fixed to the vehicle body. A mounting portion 23 is formed.

上記ドアアウタ部材５は、樹脂製ドアアッパアウタ部材２９と、樹脂製ドアロアアウタ部材３１とに分割され、両分割部材は、タルク入りＰＰ（Polypropylene）等の熱可塑性樹脂からなる。   The said door outer member 5 is divided | segmented into the resin door upper outer member 29 and the resin door lower outer member 31, and both division members consist of thermoplastic resins, such as PP (Polypropylene) containing talc.

上記ドアアッパアウタ部材２９は、左右に細長い略矩形板状をなし、下端縁部全体に車体前方に凹む段差が形成されている。該ドアアッパアウタ部材２９の外周縁部は、上記ドアインナ部材３の上記窓用開口部１３上側で該窓用開口部１３上端縁部及び該ドアインナ部材３外周縁部にウレタン系接着剤からなる第１接着剤３３（図３及び図４参照）を介して接着されている。すなわち、該ドアアッパアウタ部材２９の外周縁部は、上記内側フランジ１９の上辺部１９ａと、上記外側フランジ１１の上辺部１１ａ及び左右両側辺部１１ｂ上端部とに接着されている。   The door upper outer member 29 has a substantially rectangular plate shape that is elongated to the left and right, and a step that is recessed forward of the vehicle body is formed on the entire bottom edge. The outer peripheral edge of the door upper outer member 29 is made of urethane adhesive on the upper edge of the window opening 13 and the outer peripheral edge of the door inner member 3 above the window opening 13 of the door inner member 3. 1 is bonded via an adhesive 33 (see FIGS. 3 and 4). That is, the outer peripheral edge portion of the door upper outer member 29 is bonded to the upper side portion 19a of the inner flange 19, the upper side portion 11a of the outer flange 11 and the upper end portions of the left and right side portions 11b.

一方、上記ドアロアアウタ部材３１は、下方に行くに従って左右幅が狭くなる略矩形板状をなし、上端縁部全体に車体前方に凹む段差が形成されている。該ドアロアアウタ部材３１の外周縁部は、上記ドアインナ部材３の上記窓用開口部１３下側で該窓用開口部１３下端縁部及び該ドアインナ部材３外周縁部に上記第１接着剤３３を介して接着されている。すなわち、該ドアロアアウタ部材３１の外周縁部は、上記内側フランジ１９の下辺部１９ｂと、上記外側フランジ１１の下辺部１１ｃと、該外側フランジ１１の左右両側辺１１ｂ部下端から中央部下寄り部分とに接着されている。なお、当該ドアロアアウタ部材３１の中央部には、ナンバープレート取付部３１ａが形成されている。   On the other hand, the door lower outer member 31 has a substantially rectangular plate shape whose lateral width becomes narrower as it goes downward, and a step that is recessed forward of the vehicle body is formed on the entire upper edge. The outer peripheral edge portion of the door lower outer member 31 is located below the window opening 13 of the door inner member 3 at the lower edge of the window opening 13 and the outer peripheral edge of the door inner member 3 via the first adhesive 33. Are glued together. That is, the outer peripheral edge portion of the door lower outer member 31 includes a lower side portion 19b of the inner flange 19, a lower side portion 11c of the outer flange 11, and a lower portion of the left and right side portions 11b of the outer flange 11 from the lower end of the central portion. It is glued. A number plate attaching portion 31 a is formed at the center of the door lower outer member 31.

上記窓部材７は、矩形板状をなし、上記窓用開口部１３に対応する領域が透明であって、その外側領域が黒色のセラミクス等によって隠蔽されている。該窓部材７は、上記ドアアッパアウタ部材２９及び上記ドアロアアウタ部材３１が上記ドアインナ部材３に接着された状態で、該ドアアッパアウタ部材２９下端の上記段差と該ドアロアアウタ部材３１上端の上記段差との間に嵌め込まれている。そして、該窓部材７の外周縁部は、上記窓用開口部１３上端縁部側では上記ドアアッパアウタ部材２９の下端縁部に、上記窓用開口部１３下端縁部側では上記ドアロアアウタ部材３１の上端縁部に、上記窓用開口部１３の車幅方向両側端縁側では上記ドアインナ部材３の左右両側縁部すなわち上記外側フランジ１１の左右両側辺部にそれぞれウレタン系接着剤からなる第２接着剤３５（図３〜図５参照）を介して接着されている。つまり、上記窓部材７と上記ドアインナ部材３及びドアアウタ部材５との接着面３７（図２参照）は、矩形環状をなしている。   The window member 7 has a rectangular plate shape, a region corresponding to the window opening 13 is transparent, and an outer region thereof is concealed by black ceramics or the like. The window member 7 includes a step between the lower step of the door upper outer member 29 and the step of the upper end of the door lower outer member 31 in a state where the door upper outer member 29 and the door lower outer member 31 are bonded to the door inner member 3. It is inserted in between. The outer peripheral edge of the window member 7 is located on the lower end edge of the door upper outer member 29 on the upper end edge side of the window opening 13 and on the lower end edge side of the window opening 13 on the door lower outer member 31. A second adhesive made of a urethane-based adhesive on the left and right side edges of the door inner member 3, that is, on the left and right side edges of the outer flange 11, respectively, on the both side edge sides of the window opening 13 in the vehicle width direction. It adhere | attaches through the agent 35 (refer FIGS. 3-5). That is, the bonding surface 37 (see FIG. 2) between the window member 7, the door inner member 3, and the door outer member 5 has a rectangular ring shape.

次に、上記ドアアッパアウタ部材２９とドアインナ部材３との接着構造について図２〜図６を参照して説明する。図２はドアインナ部材３にドアアッパアウタ部材２９を接着した状態における図１のII部拡大平面図、図３は窓部材７を接着した状態における図２のＡ−Ａ線矢視相当断面図、図４は窓部材７を接着した状態における図２のＢ−Ｂ線矢視相当断面図、図５は窓部材７を接着した状態における図２のＣ−Ｃ線矢視相当断面図、図６は窓部材７を接着した状態における図２のＤ−Ｄ線矢視相当断面図である。なお、以下ではドアアッパアウタ部材２９右下端部とドアインナ部材３との接着構造について説明するが、ドアアッパアウタ部材２９左下端部とドアインナ部材３との接着構造も同様の構造である。また、図２では上記窓部材７を省略している。   Next, an adhesion structure between the door upper outer member 29 and the door inner member 3 will be described with reference to FIGS. 2 is an enlarged plan view of a portion II in FIG. 1 in a state where the door upper outer member 29 is bonded to the door inner member 3, and FIG. 3 is a cross-sectional view corresponding to the line AA in FIG. 4 is a cross-sectional view corresponding to the line BB in FIG. 2 in a state where the window member 7 is bonded, FIG. 5 is a cross-sectional view corresponding to the line CC in FIG. 2 in a state where the window member 7 is bonded, FIG. FIG. 3 is a cross-sectional view corresponding to the line D-D in FIG. 2 in a state where a window member 7 is bonded. In the following, the bonding structure between the lower right end portion of the door upper outer member 29 and the door inner member 3 will be described, but the bonding structure between the lower left end portion of the door upper outer member 29 and the door inner member 3 is also the same structure. In FIG. 2, the window member 7 is omitted.

図１及び図２に示すように、上記ドアアッパアウタ部材２９の下端縁右端には、下方に突出する略矩形板状の上側突出片２９ａが設けられている。一方、上記外側フランジ１１の上記上側突出片２９ａに対応する部位には、図４に示すように、該上側突出片２９ａが嵌め込まれる上側段落部３９が形成されている。上記上側突出片２９ａは、断面Ｌ字状をなし、上記上側段落部３９に嵌め込まれた状態で、短辺部先端が該上側段落部３９底面に当接し、長辺部が該上側突出片２９ａ周りの外側フランジ１１と面一になっている。なお、上記外側立ち壁９の先端には、図４に示すように、第２接着材３５の厚みを確保するとともに該第２接着材３５を堰き止めるリブ９ａが設けられている。   As shown in FIGS. 1 and 2, a substantially rectangular plate-like upper protruding piece 29 a that protrudes downward is provided at the right end of the lower edge of the door upper outer member 29. On the other hand, as shown in FIG. 4, an upper paragraph 39 into which the upper protruding piece 29a is fitted is formed at a portion of the outer flange 11 corresponding to the upper protruding piece 29a. The upper protruding piece 29a has an L-shaped cross section and is fitted into the upper paragraph 39 so that the tip of the short side abuts the bottom of the upper paragraph 39 and the long side is the upper protruding piece 29a. It is flush with the surrounding outer flange 11. As shown in FIG. 4, a rib 9 a that secures the thickness of the second adhesive 35 and blocks the second adhesive 35 is provided at the tip of the outer standing wall 9.

上記上側突出片２９ａとその周りの外側フランジ１１との上側境界ライン４１は、図２に示すように、該上側突出片２９ａの下端において左右に延びる上外側ライン部４１ａと、該上外側ライン部４１ａ左端から上方に直線状に延びる上側中間ライン部４１ｂと、該上側中間ライン部４１ｂ上端から左側に水平に延びる上内側ライン部４１ｃとを有している。つまり、上側中間ライン部４１ｂを上下方向、すなわち重力方向に長く設定することができる。したがって、外部から入った水は、上側境界ライン４１に沿って車室側に進入しようとするが、上側中間ライン部４１ｂが重力方向に長く延びているので、重力に逆らってこの上側中間ライン部４１ｂに沿って上方に進入するのは困難である。よって、水が上側境界ライン４１に沿って車室側に進入するのを防止することができる。   As shown in FIG. 2, the upper boundary line 41 between the upper protruding piece 29 a and the outer flange 11 around the upper protruding piece 29 a includes an upper outer line portion 41 a extending left and right at the lower end of the upper protruding piece 29 a, and the upper outer line portion. The upper intermediate line portion 41b extends linearly upward from the left end of 41a, and the upper inner line portion 41c extends horizontally from the upper end of the upper intermediate line portion 41b to the left side. That is, the upper intermediate line portion 41b can be set longer in the vertical direction, that is, in the direction of gravity. Therefore, water entering from the outside tends to enter the passenger compartment side along the upper boundary line 41, but the upper intermediate line portion 41b extends in the direction of gravity. It is difficult to enter upward along 41b. Therefore, water can be prevented from entering the passenger compartment side along the upper boundary line 41.

そして、上記第１接着剤３３は、上記上側段落部３９において上記上側中間ライン部４１ｂに沿って設けられ、上記第２接着剤３５は、図４に示すように、該上側中間ライン部４１ｂを跨いで上記外側フランジ１１及び上記上側突出片２９ａ上に設けられている。そうして、図６に示すように、上記第１接着剤３３と上記第２接着剤３５とは上下方向において重なり合っており、ドアインナ部材３とドアアッパアウタ部材２９との間の隙間を両接着剤３３，３５が塞ぐか又は狭めている。したがって、第１接着剤３３及び第２接着剤３５が上側中間ライン部４１ｂで重なって両者間の隙間を塞ぐか又は狭くした部分を上下方向に長く設定することができる。したがって、水が上側中間ライン部４１ｂに沿って重力に逆らって上方に進入するのをより確実に防止することができる。   The first adhesive 33 is provided along the upper intermediate line portion 41b in the upper paragraph 39, and the second adhesive 35 removes the upper intermediate line portion 41b as shown in FIG. It is provided on the outer flange 11 and the upper protruding piece 29a. Then, as shown in FIG. 6, the first adhesive 33 and the second adhesive 35 overlap in the vertical direction, and the gap between the door inner member 3 and the door upper outer member 29 is bonded to both. Agents 33 and 35 are blocked or narrowed. Therefore, the part which the 1st adhesive agent 33 and the 2nd adhesive agent 35 overlapped with the upper side intermediate | middle line part 41b, and closed or narrowed the gap between both can be set long in the up-down direction. Accordingly, it is possible to more reliably prevent water from entering upward against the gravity along the upper intermediate line portion 41b.

つづいて、上記ドアロアアウタ部材３１と上記ドアインナ部材３との接着構造について図１、図７及び図８を参照して説明する。図７はドアインナ部材３にドアロアアウタ部材３１を接着した状態における図１のVII部拡大平面図、図８は窓部材７を接着した状態における図７のＥ−Ｅ線矢視相当断面図である。なお、以下ではドアロアアウタ部材３１右上端部とドアインナ部材３との接着構造について説明するが、ドアロアアウタ部材３１左上端部とドアインナ部材３との接着構造も同様の構造である。また、図７では上記窓部材７を省略している。   Next, an adhesion structure between the door lower outer member 31 and the door inner member 3 will be described with reference to FIGS. 1, 7, and 8. 7 is an enlarged plan view of a portion VII in FIG. 1 in a state in which the door lower outer member 31 is bonded to the door inner member 3, and FIG. 8 is a cross-sectional view corresponding to the line EE in FIG. 7 in a state in which the window member 7 is bonded. In the following, the bonding structure between the upper right end portion of the door lower outer member 31 and the door inner member 3 will be described, but the bonding structure between the left upper end portion of the door lower outer member 31 and the door inner member 3 is also the same structure. In FIG. 7, the window member 7 is omitted.

図７に示すように、上記ドアロアアウタ部材３１の上端縁右端には、上方に突出する矩形板状の下側突出片３１ｂが設けられている。この下側突出片３１ｂは、図１に示すように、上記上側突出片２９ａよりも上記ドアインナ部材３右側端から左側に離れて配置されている。一方、上記外側フランジ１１の上記下側突出片３１ｂに対応する部位には、図８に示すように、該上側突出片２９ａが嵌め込まれる下側段落部４３が形成されている。上記下側突出片３１ｂは、断面略Ｌ字状をなし、上記下側段落部４３に嵌め込まれた状態で、短辺部先端が該下側段落部４３底面に当接し、長辺部が該下側突出片３１ｂ周りの外側フランジ１１と面一になっている。なお、上記下側突出片３１ｂの折曲がり部分には、上記窓部材７側に突出するリブ３１ｃが設けられており、このリブ３１ｃが上記リブ９ａと同様に上記第２接着剤３５の厚みを確保するとともに該第２接着剤３５を堰き止める。   As shown in FIG. 7, a rectangular plate-like lower protruding piece 31b protruding upward is provided at the right end of the upper edge of the door lower outer member 31. As shown in FIG. 1, the lower protruding piece 31b is disposed farther leftward from the right end of the door inner member 3 than the upper protruding piece 29a. On the other hand, as shown in FIG. 8, a lower paragraph portion 43 into which the upper protruding piece 29a is fitted is formed at a portion of the outer flange 11 corresponding to the lower protruding piece 31b. The lower protruding piece 31b has a substantially L-shaped cross section, and in a state where the lower protruding piece 31b is fitted into the lower paragraph portion 43, the tip of the short side portion comes into contact with the bottom surface of the lower paragraph portion 43, and the long side portion thereof It is flush with the outer flange 11 around the lower protruding piece 31b. The bent portion of the lower protruding piece 31b is provided with a rib 31c protruding toward the window member 7, and the rib 31c has the thickness of the second adhesive 35 similar to the rib 9a. And securing the second adhesive 35.

そうして、上記下側突出片３１ｂとその周りの外側フランジ１１との下側境界ライン４５は、図７に示すように、該下側突出片３１ｂの上端において左右に延びる下内側ライン部４５ａと、該下内側ライン部４５ａの右端から下方に直線状に延びる下側中間ライン部４５ｂと、該下側中間ライン部４５ｂ下端から右側に水平に延びる下外側ライン部４５ｃとを有している。つまり、下側中間ライン部４５ｂを上下方向、すなわち重力方向に長く設定することができる。したがって、外部から入った水は、下側境界ライン４５に沿って車室側に進入しようとするが、下側中間ライン部４５ｂが重力方向に長く延びているので、重力に逆らってこの下側中間ライン部４５ｂに沿って上方に進入するのは困難である。よって、水が下側境界ライン４５に沿って車室側に進入するのを防止することができる。   Then, the lower boundary line 45 between the lower protruding piece 31b and the outer flange 11 around the lower protruding piece 31b is, as shown in FIG. 7, a lower inner line portion 45a extending left and right at the upper end of the lower protruding piece 31b. And a lower intermediate line portion 45b extending linearly downward from the right end of the lower inner line portion 45a, and a lower outer line portion 45c extending horizontally from the lower end of the lower intermediate line portion 45b to the right side. . That is, the lower intermediate line portion 45b can be set longer in the vertical direction, that is, in the direction of gravity. Therefore, water entering from the outside tends to enter the passenger compartment along the lower boundary line 45, but the lower intermediate line portion 45b extends in the direction of gravity, so that the lower side against gravity It is difficult to enter upward along the intermediate line portion 45b. Therefore, it is possible to prevent water from entering the passenger compartment side along the lower boundary line 45.

そして、上記第１接着剤３３は、上記下側段落部４３において上記下側中間ライン部４５ｂに沿って設けられ、上記第２接着剤３５は、該下側中間ライン部４５ｂを跨いで上記外側フランジ１１及び上記下側突出片３１ｂ上に設けられている。そうして、上記第１接着剤３３と上記第２接着剤３５とは上下方向において重なり合っており、ドアインナ部材３とドアロアアウタ部材３１との間の隙間を両接着剤３３，３５が塞ぐか又は狭めている。したがって、第１接着剤３３及び第２接着剤３５が下側中間ライン部４５ｂで重なって両者間の隙間を塞ぐか又は狭くした部分を上下方向に長く設定することができる。したがって、水が下側中間ライン部４５ｂに沿って重力に逆らって上方に進入するのをより確実に防止することができる。   The first adhesive 33 is provided along the lower intermediate line portion 45b in the lower paragraph 43, and the second adhesive 35 straddles the lower intermediate line portion 45b. It is provided on the flange 11 and the lower protruding piece 31b. Thus, the first adhesive 33 and the second adhesive 35 overlap in the vertical direction, and the adhesives 33 and 35 close or narrow the gap between the door inner member 3 and the door lower outer member 31. ing. Therefore, the part which the 1st adhesive agent 33 and the 2nd adhesive agent 35 overlapped by the lower side intermediate | middle line part 45b and block | closed the gap between them, or narrowed can be set long to an up-down direction. Therefore, it is possible to more reliably prevent water from entering upward against the gravity along the lower intermediate line portion 45b.

《変形例》
上記実施形態では、中間ライン部４１ｂ、４５ｂが全体に亘って一定幅であるが、一部を広げてもよい。変形例に係る車両用バックドアについて図９及び図１０を参照して説明する。図９は変形例に係る車両用バックドアの図２相当図、図１０は窓部材７を接着した状態における図９のＢ’−Ｂ’線矢視相当断面図、図１１は窓部材７を接着した状態における図９のＤ’−Ｄ’線矢視相当断面図である。 <Modification>
In the embodiment described above, the intermediate line portions 41b and 45b have a constant width throughout, but a part thereof may be widened. A vehicle back door according to a modification will be described with reference to FIGS. 9 and 10. 9 is a view corresponding to FIG. 2 of the vehicle back door according to the modification, FIG. 10 is a cross-sectional view corresponding to the arrow B′-B ′ in FIG. 9 in a state where the window member 7 is bonded, and FIG. FIG. 10 is a cross-sectional view corresponding to the arrow line D′-D ′ in FIG. 9 in a bonded state.

上記上側突出片２９ａの上記上側中間ライン部４１ｂに対応する部位には、該上側中間ライン部４１ｂ側、すなわち左側に開口する切欠部４７が設けられている。そして、図１０に示すように、上記第１接着剤３３及び上記第２接着剤３５が上記切欠部４７において接合し、図１１に示すように、上下方向において上側中間ライン部４１ｂの一部を塞いでいる。このように、第１接着剤３３及び第２接着剤３５が切欠部４７において接合しているので、この接合部分で水の進入路を完全に塞ぐことができる。なお、本変形例では、切欠部４７が上側突出片２９ａに設けられているが、外側フランジ１１の上側中間ライン部４１ｂに対応する部位に設けられてもよい。または、上側突出片２９ａ及び外側フランジ１１の双方に切欠部４７が設けられてもよい。さらに、本変形例では、上記切欠部４７が上側突出片２９ａに設けられているが、下側突出片３１ｂに設けられてもよい。   A cutout portion 47 that opens to the upper intermediate line portion 41b side, that is, the left side is provided at a portion corresponding to the upper intermediate line portion 41b of the upper protruding piece 29a. Then, as shown in FIG. 10, the first adhesive 33 and the second adhesive 35 are joined at the notch 47, and as shown in FIG. 11, a part of the upper intermediate line portion 41b in the vertical direction. It is blocking. Thus, since the 1st adhesive agent 33 and the 2nd adhesive agent 35 are joined in the notch part 47, the approach path of water can be completely plugged up in this joined part. In this modification, the notch 47 is provided in the upper protruding piece 29a, but may be provided in a portion corresponding to the upper intermediate line portion 41b of the outer flange 11. Or the notch part 47 may be provided in both the upper side protrusion piece 29a and the outer side flange 11. FIG. Further, in the present modification, the notch 47 is provided in the upper protruding piece 29a, but may be provided in the lower protruding piece 31b.

以上説明したように、本発明に係る車両用バックドアは、ドアインナ部材とそれに接着されたドアアウタ部材との間に入った水が接着部から車室側に浸入するのを防止する用途等に適用することができる。   As described above, the vehicular back door according to the present invention is applied to applications such as preventing water that enters between the door inner member and the door outer member bonded thereto from entering the vehicle compartment side from the bonded portion. can do.

１ 車両用バックドア
３ ドアインナ部材
５ ドアアウタ部材
７ 窓部材
１３ 窓用開口部
３３ 第１接着剤
３５ 第２接着剤
２９ ドアアッパアウタ部材
２９ａ 上側突出片
３１ ドアロアアウタ部材
３１ｂ 下側突出片
３７ 窓部材とドアインナ部材及びドアアウタ部材との接着面
３９ 上側段落部
４１ 上側境界ライン
４１ａ 上外側ライン部
４１ｂ 上側中間ライン部
４１ｃ 上内側ライン部
４３ 下側段落部
４５ 下側境界ライン
４５ａ 下内側ライン部
４５ｂ 下側中間ライン部
４５ｃ 下外側ライン部
４７ 切欠部 DESCRIPTION OF SYMBOLS 1 Vehicle back door 3 Door inner member 5 Door outer member 7 Window member 13 Window opening 33 First adhesive 35 Second adhesive 29 Door upper outer member 29a Upper protruding piece 31 Door lower outer member 31b Lower protruding piece 37 Window member Bonding surface 39 with door inner member and door outer member Upper paragraph portion 41 Upper boundary line 41a Upper outer line portion 41b Upper intermediate line portion 41c Upper inner line portion 43 Lower paragraph portion 45 Lower boundary line 45a Lower inner line portion 45b Lower side Middle line part 45c Lower outer line part 47 Notch

Claims (2)

窓用開口部(13)が形成された樹脂製ドアインナ部材(3)と、ドアアッパアウタ部材(29)及びドアロアアウタ部材(31)に分割され上記ドアインナ部材(3)に車外側から接着された樹脂製ドアアウタ部材(5)と、上記窓用開口部(13)を覆う窓部材(7)とを備え、上記ドアアッパアウタ部材(29)の外周縁部は、上記ドアインナ部材(3)の上記窓用開口部(13)上側で該窓用開口部(13)上端縁部及び該ドアインナ部材(3)外周縁部に第１接着剤(33)を介して接着され、上記ドアロアアウタ部材(31)の外周縁部は、上記ドアインナ部材(3)の上記窓用開口部(13)下側で該窓用開口部(13)下端縁部及び上記ドアインナ部材(3)外周縁部に上記第１接着剤(33)を介して接着され、上記窓部材(7)の外周縁部は、上記窓用開口部(13)上端縁部側では上記ドアアッパアウタ部材(29)の下端縁部に、上記窓用開口部(13)下端縁部側では上記ドアロアアウタ部材(31)の上端縁部に、上記窓用開口部(13)の車幅方向両側端縁側では上記ドアインナ部材(3)の車幅方向両側端縁部にそれぞれ第２接着剤(35)を介して接着された車両用バックドアであって、
上記窓部材(7)と上記ドアインナ部材(3)及び上記ドアアウタ部材(5)との接着面(37)は、矩形環状をなし、
上記ドアアッパアウタ部材(29)下端縁部の車幅方向両端には、下方に突出する上側突出片(29a)が設けられている一方、上記ドアロアアウタ部材(31)上端縁部の車幅方向両端には、上方に突出する下側突出片(31b)が設けられ、該下側突出片(31b)は、上記上側突出片(29a)よりも上記ドアインナ部材(3)の車幅方向外側端から車幅方向内側に離れて配置され、
上記ドアインナ部材(3)の上記上側及び下側突出片(29a,31b)に対応する部位には、該上側及び下側突出片(29a,31b)が嵌め込まれる上側及び下側段落部(39,43)が形成され、
該上側及び下側段落部(39,43)に該上側及び下側突出片(29a,31b)が嵌め込まれた状態で、上記上側突出片(29a)とその周りの上記ドアインナ部材(3)とは面一になっていて、両者の上側境界ライン(41)は、該上側突出片(29a)の下端において車幅方向に延びる外側ライン部(41a)と、該外側ライン部(41a)の車幅方向内側端から上方に直線状に延びる中間ライン部(41b)と、該中間ライン部(41b)上端から車幅方向内側に延びる内側ライン部(41c)とを有している一方、上記下側突出片(31b)とその周りの上記ドアインナ部材(3)とは面一になっていて、両者の下側境界ライン(45)は、該下側突出片(31b)の上端において車幅方向に延びる内側ライン部(45a)と、該内側ライン部(45a)の車幅方向外側端から下方に直線状に延びる中間ライン部(45b)と、該中間ライン部(45b)下端から車幅方向外側に延びる外側ライン部(45c)とを有し、
上記第１接着剤(33)は、上記上側及び下側段落部(39,43)において上記中間ライン部(41b,45b)に沿って設けられ、上記第２接着剤(35)は、該中間ライン部(41b,45b)を跨いで上記ドアインナ部材(3)及び上記ドアアウタ部材(5)上に設けられていることを特徴とする車両用バックドア。 A resin door inner member (3) having a window opening (13) formed therein, a door upper outer member (29) and a door lower outer member (31), and the resin bonded to the door inner member (3) from the outside of the vehicle A door outer member (5) and a window member (7) covering the window opening (13), and the outer peripheral edge of the door upper outer member (29) is the window of the door inner member (3). The upper opening (13) is bonded to the upper edge of the window opening (13) and the outer peripheral edge of the door inner member (3) via a first adhesive (33), and the door lower outer member (31) The outer peripheral edge is formed on the lower edge of the window opening (13) and on the outer peripheral edge of the door inner member (3) below the window opening (13) of the door inner member (3). (33) and the window member (7) has an outer peripheral edge that is connected to the window opening (13) on the upper edge side of the window upper outer member (29) on the lower edge of the window. Opening (13) on the lower edge side of the door lower outer member (31) on the upper edge of the door opening (13) on both sides in the vehicle width direction of the window opening (13) on both sides of the door inner member (3) in the vehicle width direction Vehicular backdoors bonded to the edges via a second adhesive (35),
The bonding surface (37) of the window member (7) and the door inner member (3) and the door outer member (5) has a rectangular ring shape,
On both ends in the vehicle width direction of the lower end edge of the door upper outer member (29), there are provided upper protruding pieces (29a) protruding downward, while on the both ends of the door lower outer member (31) in the vehicle width direction of the upper end edge Is provided with a lower projecting piece (31b) projecting upward, and the lower projecting piece (31b) is located closer to the outer side in the vehicle width direction of the door inner member (3) than the upper projecting piece (29a). It is arranged away from the inside in the vehicle width direction,
The upper and lower paragraphs (39, 39) into which the upper and lower protruding pieces (29a, 31b) are fitted in the portions corresponding to the upper and lower protruding pieces (29a, 31b) of the door inner member (3). 43) is formed,
With the upper and lower protruding pieces (29a, 31b) fitted in the upper and lower paragraphs (39, 43), the upper protruding piece (29a) and the door inner member (3) around it. The upper boundary line (41) between the two is composed of an outer line portion (41a) extending in the vehicle width direction at the lower end of the upper protruding piece (29a) and a vehicle of the outer line portion (41a). While having an intermediate line portion (41b) extending linearly upward from the inner end in the width direction and an inner line portion (41c) extending inward in the vehicle width direction from the upper end of the intermediate line portion (41b) The side protruding piece (31b) and the door inner member (3) around the side protruding piece (31b) are flush with each other, and the lower boundary line (45) of both of them is at the upper end of the lower protruding piece (31b) in the vehicle width direction. An inner line portion (45a) extending inward, an intermediate line portion (45b) extending linearly downward from an outer end in the vehicle width direction of the inner line portion (45a), and a vehicle width direction from the lower end of the intermediate line portion (45b) Has an outer line portion which extends outwardly and (45 c),
The first adhesive (33) is provided along the intermediate line (41b, 45b) in the upper and lower paragraphs (39, 43), and the second adhesive (35) A vehicle back door characterized by being provided on the door inner member (3) and the door outer member (5) across a line portion (41b, 45b). 請求項１に記載の車両用バックドアにおいて、
上記ドアインナ部材(3)並びに上記上側及び下側突出片(29a,31b)の少なくとも１つの上記中間ライン部(41b,45b)に対応する部位には、該中間ライン部(41b,45b)側に開口する切欠部(47)が設けられ、
上記第１接着剤(33)及び上記第２接着剤(35)は、該切欠部(47)において接合していることを特徴とする車両用バックドア。 The vehicle back door according to claim 1,
The door inner member (3) and the upper and lower projecting pieces (29a, 31b) have at least one intermediate line portion (41b, 45b) corresponding to the intermediate line portion (41b, 45b) side. A notch (47) is provided that opens,
The back door for a vehicle, wherein the first adhesive (33) and the second adhesive (35) are joined at the notch (47).
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