JP7182473B2 - vehicle back door - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle back door in which an outer panel is adhered to an inner panel with an adhesive.

Patent Literature 1 discloses an inner corner portion composed of a first inner panel portion facing the rear of the vehicle and a second inner panel portion protruding toward the front of the vehicle from the lower edge of the first inner panel portion. An outer corner formed of an inner panel formed, a first outer panel portion facing the first inner panel portion of the inner panel, and a second outer panel portion facing the second inner panel portion of the inner panel. and an outer panel formed with an outer corner portion bonded to the inner corner portion from the rear of the vehicle via an adhesive, and on both sides in the vehicle width direction above the inner corner portion of the inner panel , a vehicle back door in which positioning holes are provided, and positioning protrusions are provided at upper end portions on both sides of the outer panel in the vehicle width direction. In this vehicle back door, from an assembly preparation state in which the positioning projections of the outer panel are inserted into the positioning holes of the inner panel and the outer corner portion of the outer panel is separated from the inner corner portion of the inner panel, The outer panel is assembled to the inner panel by rotating the outer panel about the positioning protrusion in a direction in which the outer corner portion approaches the inner corner portion. In addition, since the positioning holes for the inner panel are formed in the bridging piece that is arranged on the rear side of the vehicle from the bottom surface of the pillar, compared to the case where the positioning holes are formed in the bottom surface of the pillar, the outer panel The outer corners of the panel are less likely to interfere with the adhesive applied to the inner corners of the inner panel.

Japanese Patent No. 6373165

However, even if the positioning hole of the inner panel is arranged in the bridging piece as in Patent Document 1, the area between the positioning protrusion arrangement location of the outer panel and the outer corner portion is downward toward the rear of the vehicle. Depending on the shape of the outer panel, such as when it is slanted or curved, it may not be possible to prevent the outer corners of the outer panel from interfering with the adhesive applied to the inner corners of the inner panel. There is a risk of poor adhesion or water leakage between them.

In addition, there is a demand for adopting a shape that curves toward the front of the vehicle toward the outside in the vehicle width direction as the shape of the outer panel.

The present invention has been made in view of such a point, and an object of the present invention is to provide an inner panel and an outer panel in the case where the shape of the outer panel is curved toward the front of the vehicle toward the outside in the vehicle width direction. To prevent poor adhesion between a panel and water leakage.

In order to achieve the above object, the present invention provides a method of bending the outer corner of the outer panel in a direction away from the inner corner of the inner panel during assembly so that the outer panel or the inner panel and the adhesive adhere to each other. It is characterized in that it is possible to avoid the interference of

Specifically, the present invention includes a first inner panel portion facing the rear of the vehicle and a second inner panel portion projecting toward the front of the vehicle from one edge in the vertical direction of the first inner panel portion. an inner panel having a configured inner corner portion; a first outer panel portion facing the first inner panel portion of the inner panel; and a second outer panel portion facing the second inner panel portion of the inner panel. A vehicle back door provided with an outer panel in which an outer corner portion is formed and the outer corner portion is bonded to the inner corner portion from the rear of the vehicle with an adhesive, took steps to resolve.

That is, in the present invention, positioning portions are provided on both sides in the vehicle width direction in the other vertical direction of the inner corner portion of the inner panel, and the outer panel is curved outward in the vehicle width direction toward the front of the vehicle. The outer panel is assembled to the inner panel in a curved state, and positioned portions are provided at the other ends in the vertical direction on both sides of the outer panel in the vehicle width direction, and one of the positioning portion and the positioned portion is a positioning member. The other of the positioning portion and the portion to be positioned is a positioning projection penetrating the positioning hole, and one of the outer peripheral edge of the positioning hole and the positioning projection has a width extending toward the front of the vehicle. A guide surface inclined inward in the direction is formed, and the outer panel is bent so as to expand in the vehicle width direction from the curved state, the tip of the positioning projection is inserted into the positioning hole, and the outer side of the outer panel. From the assembly preparation state in which the corner portion is bent in a direction away from the inner corner portion of the inner panel, the outer panel is moved around the positioned portion so that the outer corner portion approaches the inner corner portion. and the other of the outer peripheral edge of the positioning hole and the positioning projection is brought into sliding contact with the guide surface to guide the positioned portion of the outer panel inward in the vehicle width direction toward the inner panel. The outer panel is assembled to the inner panel by bending the outer panel outward in the vehicle width direction toward the inner panel.

According to the present invention, since the outer panel is bent so as to expand in the vehicle width direction in the assembly preparation state, the outer corner portion of the outer panel can be bent in a direction away from the inner corner portion of the inner panel. It is possible to prevent the other of the outer corner portion and the inner corner portion from interfering with the adhesive applied to one of the outer corner portion and the inner corner portion and scraping off the adhesive. Therefore, it is possible to prevent poor adhesion and water leakage between the inner panel and the outer panel when the shape of the outer panel is curved toward the front of the vehicle toward the outside in the vehicle width direction.

In addition, compared to the case where the outer corner portion of the outer panel is not bent in the direction of separating from the inner corner portion of the inner panel in the assembly preparation state, the positioned portion of the outer panel is positioned relatively forward of the vehicle. Even if they are arranged, it is possible to prevent the other of the outer corner portion and the inner corner portion from interfering with the adhesive applied to one of the outer corner portion and the inner corner portion during assembly. Therefore, the flexibility of the shape of the vehicle back door can be increased.

1 is a rear view of a vehicle back door according to an embodiment of the present invention with a window panel removed; FIG. 1 is an exploded perspective view of a vehicle back door according to an embodiment of the present invention; FIG. 2 is a cross-sectional view taken along line III-III of FIG. 1; FIG. FIG. 2 is a cross-sectional view taken along line IV-IV of FIG. 1; 4 is an enlarged view of a V portion in FIG. 3; FIG. FIG. 2 is an enlarged view of part VI of FIG. 1; FIG. 4A is a cross-sectional view taken along line VII-VII showing a process of assembling a lower outer panel to an inner panel; (b) shows a state in which the tips of the lower positioning projections of the inner panel are inserted into the lower positioning holes of the lower outer panel; It shows a state in which the inner panel is brought into contact with the first adhesive applied to the inner corner portion.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

1 to 4 show a vehicle backdoor 1 according to an embodiment of the invention. The back door 1 is a vertically opening and closing back door that opens and closes a back door opening provided at the rear end of the vehicle body of a hatchback vehicle.

As shown in FIG. 2 , the back door 1 includes a resin inner panel 5 positioned inside the vehicle, a resin outer panel 7 positioned outside the vehicle, and a window panel 9 .

The inner panel 5 is a single panel molded by injection molding or the like, and is made of, for example, polypropylene glass fiber (PP-GF) or polypropylene carbon fiber (PP-CF). It consists of a thermoplastic resin containing a fiber reinforcement such as.

The inner panel 5 faces the outer panel 7 in the longitudinal direction of the vehicle and has a main body portion 11 that constitutes the main body of the inner panel 5 .

An upper half portion of the main body portion 11 of the inner panel 5 is formed in a substantially trapezoidal shape, and a window opening 13 extending in the vehicle width direction is formed in the upper half portion. The window opening 13 is formed in a substantially trapezoidal shape similar to the upper half portion of the body portion 11 of the inner panel 5 . The upper half portion of the main body portion 11 of the inner panel 5 is inclined downward toward the rear of the vehicle.

An outer standing wall portion 15 that rises toward the outer panel 7 side is annularly provided along the entire periphery of the outer peripheral edge of the main body portion 11 of the inner panel 5 . An outer flange 17 for joining is provided at the rear end of the outer standing wall portion 15 so as to protrude outward.

Further, around the window opening 13 of the body portion 11 of the inner panel 5, an inner standing wall portion 19 rising toward the outer panel 7 is annularly provided over the entire circumference. An inner flange 21 for joining is provided at the rear end of the inner standing wall portion 19 so as to protrude inwardly of the window opening 13 .

As shown in FIGS. 5 and 6, on both sides in the vehicle width direction near the lower end of the window opening 13 of the inner panel 5, the outer vertical wall portion 15 and the inner vertical wall portion 19 are arranged so that their plate surfaces extend in the vehicle front-rear direction. are bridged by a plate-like lower bridging portion 23 directed toward the A lower positioning protrusion 25 serving as a plate-shaped positioning portion is formed in the middle of each lower bridging portion 23 in the vertical direction and protrudes toward the rear of the vehicle with the plate surface facing in the vertical direction. A guide surface 25a inclined inward in the vehicle width direction toward the front of the vehicle is formed at the edge of the lower positioning protrusion 25 on the inside in the vehicle width direction, excluding the base end portion. , a positioning surface 25b perpendicular to the rear surface of the lower bridge portion 23 is formed. A vertical surface 25 c perpendicular to the rear surface of the lower bridging portion 23 is formed on the outer edge in the vehicle width direction of the lower positioning projection 25 . On both sides of the lower positioning projection 25 on the rear surface of the lower bridging portion 23 in the vertical direction, plate-like reinforcing portions 27 are provided with their plate surfaces directed in the vehicle width direction. It is connected to the protrusion 25 . An inclined surface 27 a that is inclined toward the front of the vehicle toward the anti-lower positioning protrusion 25 side is formed at the end of the tip surface (rear surface) of both reinforcing portions 27 on the anti-lower positioning protrusion 25 side. The regions of the tip surfaces of both reinforcing portions 27 excluding the inclined surfaces 27 a are flush with the tip surfaces of the lower positioning projections 25 . A rib 28 protrudes in the front and back direction from the upper end edge of each lower bridging portion 23 .

On the other hand, on both sides in the vehicle width direction near the upper end of the window opening 13 of the inner panel 5, the outer standing wall portion 15 and the inner standing wall portion 19 form plate-like upper bridging portions 29 with their plate surfaces directed in the vehicle front-rear direction. bridged by The upper bridge portion 29 is provided with an upper positioning projection 31 projecting toward the rear of the vehicle.

Around the outer peripheral portion of the inner panel 5 and the window opening 13, when the back door 1 is in a closed state, it is attached to the vehicle body to prevent rain, wind, dust, noise, etc. from entering the vehicle. A weatherstrip (not shown) adheres from the front of the vehicle.

In addition, a recess 33 having a rectangular shape in plan view and recessed rearward of the vehicle is provided in a region slightly away from the window opening 13 in the central portion of the body portion 11 of the inner panel 5 in the vehicle width direction. An upper recessed portion 35 is formed in the upper end portion of 33 over the entire width direction of the vehicle so as to be recessed further toward the rear of the vehicle than the lower side thereof. The upper recessed portion 35 includes a first recessed portion 35a extending in the vehicle width direction and a second recessed portion 35b projecting downward from both ends of the first recessed portion 35a in the vehicle width direction. A knob mechanism for operating the locked state of the lock device and a lamp for illuminating the license plate (both not shown) are disposed in the space S sandwiched between the two second recesses 35b from both sides in the vehicle width direction. In addition, a maintenance work opening 37 for attaching a latch to a latch attachment portion 41 described later and for wiring a harness or the like is formed in the vehicle width direction central portion of the lower half of the bottom surface of the recess 33 . ing. Both ends in the vehicle width direction of the lower side surface of the recess 33 are connected to the lower outer standing wall portion 15 by lower connecting ribs 39 projecting from the main body portion 11 of the inner panel 5 toward the rear of the vehicle. In addition, both ends in the vehicle width direction of the upper side surface of the recess 33 including the upper recess 35 are formed by upper connection ribs 40 projecting from the body portion 11 of the inner panel 5 toward the rear of the vehicle to form an inner standing wall below the window opening 13 . It is connected with the part 19 . A latch attachment portion 41 to which a latch (not shown) is attached is provided at the center of the outer standing wall portion 15 in the vehicle width direction. The latch is a device that detachably engages with a striker provided at the lower edge of the back door opening, and is a locking device that locks the back door 1 to the vehicle body in a closed state in cooperation with the striker.

The bottom surface (rear surface) of the second recess 35b constitutes a first inner panel portion 45 facing the rear of the vehicle. A second inner panel portion 47 is formed by protruding from each other, and these, the first inner panel portion 45 and the second inner panel portion 47 form an inner corner portion 49 .

Hinge mounting portions 51 are provided on both sides in the vehicle width direction of the upper end portion of the inner panel 5 . An opening/closing hinge (not shown), which is fixed to the upper edge of the back door opening along the width direction of the vehicle, is attached to the hinge attachment portion 51 from the front with fasteners such as bolts. be. The back door 1 is attached to the vehicle body via the hinge for opening and closing so as to be openable and closable.

An inner trim 43 is detachably attached to the inner panel 5 configured as described above so as to cover the entire recess 33 from the front of the vehicle.

The outer panel 7 is vertically divided into two parts, and is composed of an upper outer panel 7a located on the upper side and a lower outer panel 7b located on the lower side. These upper outer panel 7a and lower outer panel 7b are made of, for example, talc-containing polypropylene (PP-T: Polypropylene Talc) or synthetic resin mixed with ethylene propylene diene methylene rubber (EPDM: Ethylene Propylene Diene Monomer). Molded by molding.

The upper outer panel 7a has an elongated upper side main body portion 53 that is elongated in the vehicle width direction and that constitutes the main body of the upper outer panel 7a. A forwardly recessed upper side recess 53 a is provided in the lower end portion of the upper side main body portion 53 over the entire vehicle width direction. Plate-like upper extending portions 59 extend downward from both end portions in the vehicle width direction of the lower edge of the upper body portion 53 . An upper stepped portion 59a is formed in the middle portion of the upper extending portion 59 in the extending direction such that the tip side of the upper stepped portion 59a is positioned further forward in the vehicle than the base end side. The inner edge in the vehicle width direction of the upper extending portion 59 on the proximal side of the upper stepped portion 59a is curved such that the width of the upper extending portion 59 gradually narrows toward the distal end side. In addition, the upper extending portion 59 is narrower on the distal end side than the upper stepped portion 59a than on the proximal end side. A circular upper positioning hole 59b is formed in the upper extending portion 59 on the distal end side of the upper stepped portion 59a.

The upper outer panel 7a configured as described above is configured such that the upper side main body portion 53 faces the inner panel 5 above the window opening 13, and the outer peripheral edge thereof is bridged over the upper side of the inner panel 5. It is attached to the inner panel 5 from the rear of the vehicle by bonding the outer flange 17 and the inner flange 21 located above the portion 29 with the first adhesive 55 . The upper positioning projections 31 of the inner panel 5 pass through the upper positioning holes 59b of the upper outer panel 7a. When bonding the upper outer panel 7a to the inner panel 5, the upper outer panel 7a is positioned with respect to the inner panel 5 by inserting the upper positioning projections 31 of the inner panel 5 into the upper positioning holes 59b.

The lower outer panel 7b curves toward the front of the vehicle toward the outside in the vehicle width direction. The lower outer panel 7b has a lower main body portion 61 as its main body. A plate mounting recess 63 recessed forward is provided in the central portion of the lower body portion 61 . The open surface of the plate mounting recess 63 is formed in a trapezoidal shape with the upper side larger than the lower side. The plate mounting recess 63 has a bottom surface portion 63a that faces rearward in an attitude that is slightly inclined forward and upward, a pair of side wall portions 63b that extend rearward on both left and right sides of the bottom surface portion 63a, and a pair of side wall portions 63b that extend rearward on the left and right sides of the bottom surface portion 63a. and an upper wall portion 63c extending in the front-rear direction between the pair of side wall portions 63b. The lower body portion 61 above the plate mounting recess 63 is inclined downward toward the rear of the vehicle along the body portion 11 of the inner panel 5 .

Therefore, the region adjacent to the plate mounting recess 63 in the lower body portion 61 of the lower outer panel 7b from above forms the first outer panel portion 65, and the upper wall portion 63c of the plate mounting recess 63 forms the second outer panel. The first outer panel portion 65 and the second outer panel portion 67 constitute an outer corner portion 69 . The outer corner portion 69 is formed so as to be able to bend toward the rear of the vehicle.

A license plate (number plate) is attached to the bottom portion 63 a of the plate attachment recess 63 . Further, although not shown, the upper wall portion 63c of the plate mounting recess 63 has an opening for a knob for operating a knob mechanism arranged in the space S, and an opening for illuminating the license plate similarly arranged in the space S. A light projection aperture is formed through which light from the lamp passes.

A forwardly recessed lower side recess 61a is provided in the upper end edge of the lower side main body portion 61 of the lower outer panel 7b over the entire vehicle width direction. Plate-like lower extension portions 71 extend upward from both end portions in the vehicle width direction of the upper edge of the lower body portion 61 . The lower extending portion 71 is also inclined downward toward the rear of the vehicle along the body portion 11 of the inner panel 5 . A lower stepped portion 71a is formed in the middle portion of the lower extending portion 71 in the extending direction such that the tip side of the lower stepped portion 71a is positioned further forward in the vehicle than the base end side. The inner edge in the vehicle width direction on the base end side of the lower stepped portion 71a of the lower extending portion 71 is curved so that the width of the lower extending portion 71 gradually narrows toward the distal end side. there is Further, the width of the lower extending portion 71 is narrower on the distal end side than the lower stepped portion 71a than on the proximal end side. Further, a lower positioning hole 71b as a portion to be positioned having an elongated hole shape elongated in the vehicle width direction is formed in the lower extending portion 71 on the tip side of the lower stepped portion 71a. Reinforcing ribs 73 project toward the rear of the vehicle from the tip edge and both vehicle width direction edges of each lower extending portion 71 .

The lower outer panel 7b configured as described above is assembled to the lower half portion of the inner panel 5 from the rear of the vehicle in a curved state that curves toward the front of the vehicle toward the outside in the vehicle width direction. The outer peripheral edge portion of the lower outer panel 7b is adhered to the outer flange 17 and the inner flange 21 located below the lower bridging portion 23 of the inner panel 5 via the first adhesive 55 . Further, the outer corner portion 69 of the lower outer panel 7b is adhered to the inner corner portion 49 of the inner panel 5 with the first adhesive 55 interposed therebetween. Specifically, the first outer panel portion 65 of the lower outer panel 7b is bonded to the first inner panel portion 45 of the inner panel 5 via the first adhesive 55 so as to face the second outer panel portion 65 of the lower outer panel 7b. The panel portion 67 is adhered to the second inner panel portion 47 of the inner panel 5 via the first adhesive 55 so as to face the second inner panel portion 47 . Further, the lower positioning projections 25 of the inner panel 5 pass through the respective lower positioning holes 71b of the lower outer panel 7b. The positioning surface 25b of the lower positioning projection 25 contacts the inner peripheral surface of the lower positioning hole 71b from the outside in the vehicle width direction, and the vertical surface 25c of the lower positioning projection 25 contacts the inner peripheral surface of the lower positioning hole 71b. The lower outer panel 7b is positioned in the vehicle width direction with respect to the inner panel 5 by abutting from the inside in the vehicle width direction. Further, the upper end surface of the upper reinforcing portion 27 contacts the inner peripheral surface of the lower positioning hole 71b from below, and the lower end surface of the lower reinforcing portion 27 contacts the inner peripheral surface of the lower positioning hole 71b from above. Thus, the lower outer panel 7b is vertically positioned with respect to the inner panel 5. As shown in FIG.

The window panel 9 is made of glass or resin and, as shown in FIG. 2, is formed in a substantially oblong trapezoidal shape extending in the vehicle width direction over both left and right ends of the back door 1 . The window panel 9 closes the window opening 13 with both ends in the vertical direction fitted into the upper recess 53a of the upper outer panel 7a and the lower recess 61a of the lower outer panel 7b. The inner panel 5 on both sides of the opening 13 in the vehicle width direction is covered from the rear of the vehicle. Then, the upper edge portion and the lower edge portion of the window panel 9 are adhered to the upper side recess 53a of the upper outer panel 7a and the lower side recess 61a of the lower outer panel 7b from the rear of the vehicle with a second adhesive (not shown). Both edges of the window panel 9 in the vehicle width direction are formed by an upper side recess 53a of the upper outer panel 7a, a lower side recess 61a of the lower outer panel 7b, these upper side recesses 53 and lower side recesses. The outer flange 17 and the inner flange 21 of the inner panel 5 located between the portion 61a and the inner panel 5 are adhered from the rear of the vehicle with a second adhesive (not shown).

The area of the window panel 9 corresponding to the window opening 13 is a transparent window area 9a, and the area positioned outside the window area 9a is a concealing area 9b concealed by a concealing layer made of black ceramics or the like. It's becoming The concealed area 9b of the window panel 9 covers and conceals the upper side recess 53a of the upper outer panel 7a and the lower side recess 61a of the lower outer panel 7b from the rear of the vehicle.

Next, a method of assembling the back door 1 configured as described above will be described with reference to FIGS. 7(a) to 7(c). 7(a) to 7(c), illustration of the lower side recess 61a in the lower side body portion 61 is omitted for simplification of the drawings.

First, the first adhesive 55 is applied to the outer flange 17 , the inner flange 21 , the first inner panel portion 45 and the second inner panel portion 47 of the inner panel 5 .

Next, as shown in FIG. 7(a), the lower outer panel 7b is inclined so that the lower portion thereof is spaced apart from the inner panel 5 as shown by the two-dot chain line in FIG. Then, the lower outer panel 7b is bent so as to expand in the vehicle width direction from the curved state, and the lower body portion 61 extends flat in the vehicle width direction to a non-curved state. Thereafter, while keeping the lower outer panel 7b in a non-curved state, the lower side of the inner panel 5 is inserted into the lower positioning hole 71b of the lower outer panel 7b as indicated by the two-dot chain line in FIG. 5 and the solid line in FIG. 7(b). By inserting the tip of the positioning projection 25, the lower positioning hole 71b (the upper end portion of the lower outer panel 7b) is positioned with respect to the inner panel 5, and an assembly preparation state is established. 7(b), the outer corner portion 69 of the lower outer panel 7b is bent in a direction away from the inner corner portion 49 of the inner panel 5. As shown in FIG. . At this time, since the lower outer panel 7b is in a non-curved state, it is possible to bend the outer corner portion 69 of the lower outer panel 7b in a direction away from the inner corner portion 49 of the inner panel 5. . This prevents the outer corner portion 69 of the lower outer panel 7b from interfering with the first adhesive 55 applied to the inner corner portion 49 of the inner panel 5 and scraping off the first adhesive 55 . Therefore, poor adhesion and water leakage between the inner panel 5 and the outer panel 7 can be prevented.

Subsequently, the lower outer panel 7b is rotated around the lower positioning hole 71b so that the outer corner portion 69 approaches the inner corner portion 49, and the outer peripheral edge of the lower positioning hole 71b is moved under the inner panel 5. By slidingly contacting the guide surface 25a of the side positioning projection 25 and guiding the lower positioning hole 71b of the lower outer panel 7b toward the inner panel 5 side in the vehicle width direction (the direction indicated by the arrow X in FIG. 5), 3, the lower outer panel 7b is curved toward the inner panel 5 side outward in the vehicle width direction. 5, the positioning surface 25b of the lower positioning protrusion 25 faces the inner peripheral surface of the lower positioning hole 71b of the lower outer panel 7b, and the lower bridge portion 23 of the inner panel 5 When the peripheral edge portion of the lower positioning hole 71b of the lower outer panel 7b abuts against the non-projecting region of the lower positioning projection 25, as shown in FIG. It contacts the first adhesive 55 applied to the inner corner portion 49 of the panel 5 . Specifically, the first outer panel portion 65 of the lower outer panel 7b contacts the first adhesive 55 applied to the first inner panel portion 45 of the inner panel 5, and the second outer panel portion 67 of the lower outer panel 7b contacts. contacts the first adhesive 55 applied to the second inner panel portion 47 of the inner panel 5 . In this state, the lower outer panel 7b is positioned in the vehicle width direction and the vertical direction with respect to the inner panel 5, and the movement of the upper end portion of the lower outer panel 7b toward the inner panel 5 is It is regulated by the side bridge portion 23 .

Next, by passing the upper positioning projections 31 of the inner panel 5 through the upper positioning holes 59b of the upper outer panel 7a, the upper outer panel 7a is positioned and overlapped with respect to the inner panel 5, and a first An adhesive 55 is interposed.

After that, the upper recess 53a of the upper outer panel 7a, the lower recess 61a of the lower outer panel 7b, the upper extension 59 of the upper outer panel 7a, and the lower extension 71 of the lower outer panel 7b. Then, a second adhesive (not shown) is applied to the outer flange 17 and the inner flange 21 of the inner panel 5 located between the upper side recess 53 and the lower side recess 61a, and the inner panel 5 is And the window panel is overlaid on the outer panel 7.

Finally, the inner panel 5, the outer panel 7 and the window panel 9 are conveyed to a drying oven while being superimposed, and the first adhesive 55 and the second adhesive (not shown) are completely cured in the drying oven. By doing so, the inner panel 5, the outer panel 7 and the window panel 9 are adhered to each other, and the back door 1 is obtained.

Therefore, according to the present embodiment, when the outer corner portion 69 of the lower outer panel 7b is not bent toward the rear of the vehicle in the assembly preparation state, as indicated by the two-dot chain line in FIG. In comparison, even if the lower positioning hole 71b of the lower outer panel 7b is arranged relatively forward of the vehicle, the first adhesive 55 applied to the inner corner portion 49 does not interfere with the outer corner portion 69 during assembly. can be avoided. Therefore, the flexibility of the shape of the back door 1 can be increased.

In this embodiment, the guide surface 25a is formed on the inner edge of the lower positioning projection 25 of the inner panel 5 in the vehicle width direction. A guide surface that slopes inward in the vehicle width direction toward the front of the vehicle may be formed on the outer peripheral edge on the inner side in the width direction.

In this embodiment, the inner panel 5 is provided with the lower positioning protrusion 25 as the positioning portion, and the lower outer panel 7b is provided with the lower positioning hole 71b as the portion to be positioned. In addition to being provided as a portion, a positioning projection penetrating through the positioning hole may be provided in the lower outer panel 7b as a portion to be positioned. In such a case, a guide surface inclined inward in the vehicle width direction toward the front of the vehicle is formed on the outer edge of the positioning projection in the vehicle width direction or the outer peripheral edge of the positioning hole on the outer side in the vehicle width direction. In the process of inserting and penetrating the projection, the positioning projection of the lower outer panel 7b can be guided inward in the vehicle width direction toward the inner panel 5 side.

Further, in this embodiment, a lower positioning hole 71b is provided as a portion to be positioned in the upper end portion of the lower outer panel 7b, and a second inner panel portion 47 is provided at the lower end edge of the first inner panel portion 45 of the inner panel 5. Although the lower positioning projection 25 is provided as a positioning portion above the inner corner portion 49, the lower positioning hole 71b is provided as a portion to be positioned at the lower end portion of the lower outer panel 7b, and the inner panel A second inner panel portion 47 may be provided on the upper edge of the first inner panel portion 45 of No. 5 so as to protrude forward of the vehicle body, and the lower positioning projection 25 may be provided below the inner corner portion 49 as a positioning portion.

INDUSTRIAL APPLICABILITY The present invention is useful as a vehicle back door in which an outer panel is adhered to an inner panel with an adhesive.

1 back door
5 Inner panel
7b lower outer panel
25 lower positioning protrusion (positioning part)
25a guide surface 45 first inner panel portion
47 Second inner panel part
49 inner corner portion 55 first adhesive 65 first outer panel portion
67 Second outer panel section
69 outer corner
71b Lower positioning hole (part to be positioned)

Claims (1)

A first inner panel portion (45) facing the rear of the vehicle and a second inner panel portion (47) protruding forward of the vehicle from one edge of the first inner panel portion (45) in the vertical direction. an inner panel (5) having a structured inner corner (49);
A first outer panel portion (65) facing the first inner panel portion (45) of the inner panel (5), and a second outer panel facing the second inner panel portion (67) of the inner panel (5). The outer corner portion (69) is formed with a portion (67), and the outer corner portion (69) is adhered to the inner corner portion (49) from the rear of the vehicle via an adhesive (55). A vehicle back door comprising a panel (7b),
Positioning portions (25) are provided on both sides of the inner panel (5) in the vehicle width direction in the other vertical direction from the inner corner portion (49),
The outer panel (7b) is assembled to the inner panel (5) in a curved state in which the outer panel (7b) is curved toward the front of the vehicle toward the outside in the vehicle width direction. A positioned portion (71b) is provided at the end of the
One of the positioning portion (25) and the portion to be positioned (71b) is the positioning hole (71b), and the other of the positioning portion (25) and the portion to be positioned (71b) is the positioning hole (71b). One of the outer peripheral edge of the positioning hole (71b) and the positioning protrusion (25) has a guide surface (25a) inclined inward in the vehicle width direction toward the front of the vehicle. is formed and
By bending the outer panel (7b) so that it spreads in the vehicle width direction from the curved state, the tip of the positioning projection (25) is inserted into the positioning hole (71b), and the outer panel (7b) is bent. From the assembly preparation state in which the outer corner portion (69) is bent away from the inner corner portion (49) of the inner panel (5), the outer panel (7b) is moved to the positioned portion (71b). ) so that the outer corner portion (69) approaches the inner corner portion (49), and the other of the outer peripheral edge of the positioning hole (71b) and the positioning projection (25) is brought into contact with the guide surface. The portion (71b) to be positioned of the outer panel (7b) is brought into sliding contact with (25a) and guided inward in the vehicle width direction toward the inner panel (5), thereby moving the outer panel (7b) toward the vehicle. A back door for a vehicle, which is assembled to the inner panel (5) by bending outward in the width direction toward the inner panel (5).

Images