JPWO2015115040A1 - Vehicle back door - Google Patents

Abstract

Strengthen the outer panel (9) tougher than the inner panel (7), and provide a reinforcing sheet-like material (81) with stretchability in the inner space (S) of the lower part (3b) of the door body (3). An inner panel (11) of a latch (111) that engages with a striker (113) provided on the vehicle body (101). 7) Adhere to the bracket (71) used for mounting to.

Description

  The present disclosure relates to an improvement in a vehicle back door. Specifically, the present disclosure relates to a countermeasure against scattering of a panel at the time of a vehicle collision of a vehicle back door provided with a door body made of a resin panel.

  Patent Document 1 discloses a vehicle back door that includes a door main body formed by joining a resin inner panel and a resin outer panel, and a window portion is provided in an upper half portion of the door main body. In this back door, metal side reinforcing brackets (reinforces) that reinforce the inner panel are attached to both left and right end portions of the inner panel from the upper half to a part of the lower half. Further, a metal latch mounting bracket (lock reinforcement) for mounting a latch that engages with a striker provided in the vehicle body is mounted at the center of the lower end of the inner panel.

  In this back door, a wire is provided in the inner space of the lower portion of the door body located below the window portion in order to prevent the panels constituting the door body from being scattered due to damage at the time of a rear-end collision of the vehicle. It has been. The wire is constructed along the outer peripheral edge of the inner panel with the upper end connected to the side reinforcing bracket and the lower end connected to the latch mounting bracket.

JP 2010-159037 A

  In the back door of Patent Document 1, although both ends of the wire are connected to the vehicle body via the side reinforcing bracket and the latch mounting bracket, the wire stays on the inner panel and the outer panel except for these both ends. Moreover, it is constructed along the outer peripheral edge of the inner panel. For this reason, at the center part of the lower part of the door body, there is a possibility that a panel constituting the part will be scattered at the time of a rear collision of the vehicle and a large hole may be opened in the door body. desired.

  Therefore, as a countermeasure against scattering of the panel, the outer panel is made tougher than the inner panel, and in the inner space in the lower part of the door body, a stretchable reinforcing sheet is bonded to the outer panel and spread. By providing, even if the panel which comprises the center part in the said lower part scatters, it is possible to leave a reinforcement sheet-like thing in the location corresponding to the scattering part of a panel.

  However, depending on the degree of rear collision and the severity of the vehicle, the lower edge part of the lower part of the door body along the adhesion part with the outer panel is damaged in the inner panel. There is a possibility that the reinforcing sheet-like object is separated from the inner panel together with the outer panel. As a result, the interior space of the door body is opened to the outside of the vehicle, and even if a reinforcing sheet-like material is provided on the outer panel, if the inner panel is severely damaged, a large hole is opened in the lower part of the door body. I can not.

  The present invention has been made in view of such points, and an object of the present invention is to prevent the lower panel even if the inner panel and the outer panel constituting the lower portion of the door body are scattered at the time of a rear surface collision of the vehicle. It is in providing the vehicle back door which can prevent that a big hole opens in a part.

  In order to achieve the above object, in the present invention, the toughness of the outer panel is made higher than the toughness of the inner panel, and a reinforcing sheet-like material having extensibility in the inner space in the lower part of the door body is bonded to the outer panel. In this state, the reinforcing sheet-like material is adhered to a bracket to be used for attachment to an inner panel of an engaging device that engages with a vehicle body.

  Specifically, the present invention relates to a vehicular back door that can be used in a so-called hatchback vehicle and includes a door body that is formed by bonding a resin inner panel and a resin outer panel in a state of facing each other. Is targeted. The inner panel is a panel located on the inner side of the vehicle with the back door attached to the vehicle body. On the other hand, the outer panel is a panel located outside the vehicle with the back door attached to the vehicle body.

  In this vehicular back door, an internal space is provided between an inner panel and an outer panel constituting the door body. A window opening is formed in the upper half of the door body. A metal bracket for attaching an engagement device that is detachably engaged with the vehicle body is attached to the inner space of the inner panel along the lower edge of the door body. The engagement device is, for example, a latch or striker that constitutes a lock device that locks the back door to the vehicle body.

  And this invention takes the following solution means in the vehicle back door of the said structure.

  That is, the first invention has a configuration in which the toughness of the outer panel is higher than the toughness of the inner panel. Furthermore, in the inner space of the lower part located below the window opening in the door body, in the state of being expanded in the vehicle width direction, at least both parts along the upper and lower edges of the lower part. A reinforcing sheet-like material having stretchability adhered to the outer panel is provided. According to the first aspect of the present invention, the bracket for mounting the engaging device includes a reinforcing sheet-like material in which the adhesive portion along the lower edge of the lower portion of the reinforcing sheet-like material is sandwiched between the outer panel and the adhesive. It has an adhesive piece bonded to the outer panel.

  According to a second aspect of the present invention, in the vehicle back door of the first aspect, when the adhesive piece is pressed against the outer panel through the adhesive against the adhesive piece of the bracket for attaching the engagement device, A plurality of through-holes for entering into the substrate are formed.

  According to a third aspect of the present invention, in the vehicle back door of the first or second aspect, the lower edge portion of the lower portion of the door body is a lower edge bonding portion in which the inner panel and the outer panel are bonded. . According to a third aspect of the present invention, there is provided an outer portion together with an adhesive piece of a bracket for attaching an engaging device at a location where the adhesive portion along the lower edge of the lower portion of the reinforcing sheet-like material is adjacent to the lower edge adhesive portion of the lower portion. It is characterized by being adhered to the panel.

  According to a fourth aspect of the present invention, in any one of the vehicle back doors according to the first to third aspects, the reinforcing sheet is a net-shaped member having a number of meshes. According to a fourth aspect of the present invention, an adhesive for adhering an adhesive piece of a bracket for mounting an engagement device wraps an adhesive portion along the lower edge of the lower portion of the reinforcing sheet-like material from the adhesive piece side, and the adhesion It adheres to the piece and is attached to the outer panel through the mesh of the reinforcing sheet.

  5th invention is the back door for vehicles of 4th invention. WHEREIN: The adhesive agent which adhere | attaches the adhesion part along the upper edge of a lower part among reinforcement sheet-like objects is the said reinforcement sheet-like thing from the inner panel side. The adhesive portion is wrapped and adhered to the outer panel through the mesh of the reinforcing sheet.

  According to the first invention, the reinforcing sheet-like material is provided in the inner space of the lower portion of the door body in a state of being expanded in the vehicle width direction, and the reinforcing sheet-like material is provided on the upper edge and the lower edge of the lower portion. Since it is bonded to the outer panel, which is tougher than the inner panel at both parts along the line, it is also bonded to the bracket used for mounting to the inner panel of the engaging device that engages the vehicle body. Even if the rear panel collides with the lower edge of the lower part of the door body along the inner panel along the part that adheres to the outer panel, the reinforcing sheet is secured with the bracket for mounting the engagement device. It is done. This prevents the reinforcing sheet-like material from being separated from the inner panel as well as the outer panel, and prevents the inner space of the lower part from being completely opened outside the vehicle without the reinforcing sheet-like material. Moreover, since the reinforcing sheet-like material has stretchability, even if the lower portion of the door main body is greatly deformed, it is stretched according to the deformation, can withstand the impact at the time of rear collision of the vehicle, and is difficult to tear. Therefore, even if both panels constituting the lower portion of the door body are scattered at the time of a rear collision of the vehicle, a reinforcing sheet-like material can be left at a location corresponding to the panel scattering portion of the lower portion. It is possible to prevent a large hole from opening in the part.

  According to the second invention, since the plurality of through holes for allowing the adhesive to enter the adhesive piece of the bracket for mounting the engagement device are provided, the anchor effect is obtained by the adhesive entering the through holes and curing. Can be obtained, and the adhesive strength of the adhesive piece to the outer panel can be increased. The plurality of through holes provided in the adhesive piece of the bracket also serve to release the adhesive when the adhesive piece is pressed against the outer panel through the adhesive, so that the pressing when the adhesive piece is bonded Less force is required, and the adhesion work of the adhesive piece to the outer panel can be performed stably.

  According to the third aspect of the invention, along the lower edge of the lower portion of the reinforcing sheet-like material at a location adjacent to the lower edge adhesive portion having a relatively high rigidity where the inner panel and the outer panel are bonded to each other in the door body. Since the bonded portion is bonded to the outer panel, the bonded portion between the reinforcing sheet-like material and the outer panel can be left together with the lower edge bonded portion of the lower portion at the time of rear collision of the vehicle. Thereby, the reinforcing sheet-like object can be left in the lower part of the door body in a state where the reinforcing sheet-like object is spread over a large area.

  According to the fourth invention, the adhesive portion along the lower edge of the lower portion of the reinforcing sheet-like material that is a net-like member is wrapped with the adhesive from the adhesive piece side of the bracket for attaching the engagement device, and this adhesion is performed. Since the agent is attached to the adhesive piece and is adhered to the outer panel through the mesh of the reinforcing sheet, the reinforcing sheet is a woven or knitted fabric without a gap or hole such as a mesh through which the adhesive passes. Compared with the case where the adhesive sheet and the outer panel of the bracket are bonded to the adhesive piece and the outer panel of the bracket, respectively, the adhesive strength of the reinforcing sheet-shaped material to the adhesive sheet and the outer panel of the bracket is compared with the case where the adhesive is applied to both sides of the reinforcing sheet. Can be increased. In addition, the bonding work of the reinforcing sheet-like material can be simplified by the amount of application of the adhesive necessary for the bonding work between the adhesive pieces of the brackets and the outer panel and the reinforcing sheet-like material.

  According to the fifth invention, the adhesive portion along the upper edge of the lower portion of the reinforcing sheet-like material that is a net-like member is wrapped with the adhesive from the inner panel side, and this adhesive is used for the reinforcing sheet-like material. Since it was made to adhere to the outer panel by adhering to the outer panel through the mesh, compared to the case where the adhesive part of the reinforcing sheet-like material is adhered to the outer panel overlaid on the outer panel, The adhesive strength of the reinforcing sheet can be increased.

FIG. 1 is a perspective view showing a rear part of a vehicle body to which a vehicle back door according to an embodiment of the present invention is attached. FIG. 2 is an exploded perspective view of the vehicle back door according to the embodiment of the present invention. FIG. 3 is an inner surface view showing the surface of the inner panel according to the embodiment of the present invention on the side facing the outer panel. FIG. 4 is a cross-sectional view of the back door taken along the line IV-IV in FIG. FIG. 5 is a cross-sectional view of the back door taken along line V-V in FIG. FIG. 6 is a perspective view of the latch mounting bracket according to the embodiment of the present invention. FIGS. 7A and 7B are process diagrams showing the bonding work of the reinforcing sheet-like material to the outer panel according to the embodiment of the present invention. FIGS. 8A and 8B are process diagrams showing an assembly operation of the door body of the vehicle back door according to the embodiment of the present invention. FIG. 9 is a cross-sectional view illustrating an example of a state of the lower portion at the time of a rear collision of the vehicle back door according to the embodiment of the present invention.

  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 following embodiments, for convenience of explanation, the front side in the vehicle front-rear direction is referred to as “front”, the rear side is referred to as “rear”, the left side in the vehicle width direction facing the front of the vehicle is “left”, and the right side is “right”. The upper side in the vehicle height direction is called “upper” and the lower side is called “lower”.

  FIG. 1 is a perspective view showing a rear part of a vehicle body to which a vehicle back door 1 according to this embodiment is attached. As shown in FIG. 1, the back door 1 is a vertically openable back door that opens and closes a back door opening 103 provided at a rear end of a vehicle body body 101 of a hatchback vehicle. A rear lamp 105 such as a stop lamp or a blinker is provided at a position corresponding to the lower half of the left and right sides of the back door opening 103 of the vehicle. In the back door 1 of the present embodiment, in order to expose the rear lamps 105 to the rear of the vehicle body, the width in the left-right direction of the lower half of the back door 1 becomes narrower.

  FIG. 2 is an exploded perspective view of the back door 1. In FIG. 2, only a side reinforcing bracket 45 on the right side is shown in a pair of side reinforcing brackets 45 described later, and the side reinforcing bracket 45 on the left side is not shown. As shown in FIG. 2, the back door 1 includes a door body 3 made of resin panels 7 and 9 and a resin or glass window panel 5 held in the upper half of the door body 3. The door body 3 has a structure in which a window portion 6 (see FIG. 1) is provided at a location corresponding to the window panel 5.

  As shown in FIG. 1, the door body 3 includes an upper portion 3 a that constitutes an upper half portion, and a lower portion 3 b that is located below the window panel 5. As shown in FIG. 2, the door body 3 is in a state in which a resin inner panel 7 located on the vehicle inner side (front side) and a resin outer panel 9 located on the vehicle outer side (rear side) are opposed to each other. Bonded. An internal space S (shown in FIGS. 4 and 5 to be referred to later) is provided between the inner panel 7 and the outer panel 9.

  The inner panel 7 is a single panel, and includes, for example, fiber reinforcing materials such as polypropylene (PP-GF) or polypropylene (PP-CF) containing glass fiber. Made of thermoplastic resin. On the other hand, the outer panel 9 is divided into upper and lower parts, and includes an outer upper panel 9a positioned on the upper side and an outer lower panel 9b positioned on the lower side. The window panel 5 is attached between the outer upper panel 9a and the outer lower panel 9b.

  The outer upper panel 9a and the outer lower panel 9b are made of, for example, a resin obtained by mixing polypropylene (PP-T: Polypropylene Talc) with talc or ethylene propylene diene methylene rubber (EPDM). Accordingly, the toughness of the outer upper panel 9a and the outer lower panel 9b is higher than the toughness of the inner panel 7. On the other hand, the rigidity of the inner panel 7 is higher than the rigidity of the outer upper panel 9a and the outer lower panel 9b.

  FIG. 3 is an inner surface view showing the surface of the inner panel 7 facing the outer panel 9, that is, the surface of the vehicle rear side. 4 is a cross-sectional view of the back door 1 corresponding to the line IV-IV in FIG. FIG. 5 is a cross-sectional view of the back door 1 corresponding to the line VV in FIG. As shown in FIGS. 3 to 5, the inner panel 7 includes a main body 11 that faces the outer panel 9 in the front-rear direction and forms the main body of the panel 7. The upper half portion of the main body 11 is formed in a substantially trapezoidal shape with the width in the left-right direction becoming wider toward the lower half portion, and the lower half portion goes downward along the outer shape of the left and right rear lamps 105. It is formed in a shape with a narrow width in the left-right direction.

  A window opening 13 extending in the vehicle width direction (left-right direction) is formed in the upper half portion of the main body 11 of the inner panel 7. The window opening 13 is formed in a substantially trapezoidal shape similar to the upper half portion of the main body 11 of the inner panel 7. Of the inner panel 7, the upper half part including the window opening 13 constitutes the upper part 3 a of the door body 3, and the part located below the window opening 13 constitutes the lower part 3 b of the door body 3. It is composed.

  An outer standing wall 15 that rises toward the outer panel 9 (rear side of the vehicle) is provided on the outer peripheral edge of the main body 11 of the inner panel 7 over the entire circumference. An outer flange 17 for joining is provided on the entire rear end of the outer standing wall 15 so as to project outward. Further, an inner standing wall 19 that rises toward the outer panel 9 (rear side of the vehicle) is provided over the entire periphery of the inner panel 7 around the window opening 13 of the main body 11. On the entire rear end of the inner standing wall 19, an inner flange 21 for bonding is provided so as to project inward of the window opening 13.

  Positioning convex portions used for positioning the outer lower panel 9b in the vertical and horizontal directions when the outer lower panel 9b is assembled to the inner panel 7 are located on the left and right sides of the inner panel 7 near the lower end of the window opening 13. 23 is provided. Below the positioning projections 23, when the outer lower panel 9b is assembled to the inner panel 7, the outer lower panel 9b is positioned in the front-rear direction, and the outer lower panel 9b is slightly lifted from the inner panel 7. A step forming piece 25 for forming a step is provided.

  As shown in FIG. 2, the outer upper panel 9 a of the outer panel 9 is formed in a strip shape that is elongated in the vehicle width direction (left-right direction). The outer upper panel 9 a faces the portion of the inner panel 7 above the window opening 13 and constitutes the upper portion 3 a of the door body 3. The outer peripheral edge portion of the outer upper panel 9a is the outer peripheral edge portion of the inner panel 7, that is, the upper edge portion and the upper side portion of the left and right sides of the outer flange 17, and the upper edge portion of the window opening 13, that is, the inner flange. It is bonded to the upper side portion of 21 with an adhesive. At the lower edge of the outer upper panel 9a, a step portion 27 recessed forward is provided over the entire vehicle width direction.

  On the other hand, the outer lower panel 9b is formed in a shape in which the left and right widths become narrower toward the lower side corresponding to the shape of the lower half portion of the inner panel 7. The outer lower panel 9 b faces the portion of the inner panel 7 below the window opening 13 and constitutes the lower portion 3 b of the door body 3. As shown in FIGS. 4 and 5, the outer peripheral edge of the outer lower panel 9 b is the outer peripheral edge of the inner panel 7, that is, the lower half and the lower side of the left and right sides of the outer flange 17, and the window An adhesive 29 is adhered to the lower edge of the opening 13, that is, the lower edge of the inner flange 21.

  The upper edge portion of the lower portion 3b of the door body 3 is an upper edge bonding portion 30a in which the inner flange 21 of the inner panel 7 and the outer lower panel 9b are bonded with an adhesive 29, and the lower edge portion of the lower portion 3b is The outer flange 17 of the inner panel 7 and the outer lower panel 9 b are a lower edge bonding portion 30 b where the adhesive 29 is bonded. The left and right side edge portions of the lower portion 3b are side edge bonded portions 30c (see FIG. 1) in which the outer flange 17 of the inner panel 7 and the outer lower panel 9b are bonded with an adhesive 29.

  Further, as shown in FIG. 2, a stepped portion 31 that is recessed forward is provided on the entire upper edge portion of the outer lower panel 9 b in the vehicle width direction. Protruding pieces 33 projecting upward are provided at both left and right end portions of the step portion 31. Each protruding piece 33 is formed with a positioning hole 35 into which the positioning projection 23 of the inner panel 7 is inserted. In addition, a number plate attaching portion 37 to which a number plate (not shown) is attached is provided at the center portion of the outer lower panel 9b. The number plate mounting portion 37 is recessed forward from the periphery thereof, and is inclined forward toward the upper side.

  The window panel 5 is formed in a substantially trapezoidal shape similar to the portion of the upper half portion of the inner panel 7 excluding the portion corresponding to the outer panel 9. A region corresponding to the window opening 13 in the window panel 5 is a transparent window region 5a, and an outer region thereof is a concealment region 5b concealed by a concealment layer made of black ceramics or the like. The window region 5 a of the window panel 5 constitutes the window portion 6 together with the window opening 13 formed in the inner panel 7.

  The window panel 5 is fitted between a stepped portion 27 at the lower edge of the outer upper panel 9a and a stepped portion 31 at the upper edge of the outer lower panel 9b. And the upper edge part and lower edge part of the window panel 5 are adhere | attached on these both level | step-difference parts 27 and 31 with the adhesive agent 39 from back. Further, the left and right side edge portions of the window panel 5 are bonded to the left and right side edge portions of the inner panel 7, that is, the side edge portions of the outer flange 17 with an adhesive 39.

  The adhesive 29 that bonds the outer upper panel 9a and the outer lower panel 9b to the inner panel 7 is a so-called elastic adhesive having rubber elasticity. The elastic adhesive 29 becomes a rubber-like elastic body when cured, disperses internal stress such as thermal strain, and absorbs external stress such as vibration and impact.

  Of the door body 3, the outer upper panel 9a and the bonded portion between the outer lower panel 9b and the inner panel 7 including the upper edge bonding portion 30a, the lower edge bonding portion 30b, and the side edge bonding portion 30c of the lower portion 3b are the two panels. 7 and 9a, 9b are relatively thicker and stronger than the other parts of the door body 3 by the amount overlapped with the adhesive 29, and in addition, when the rear surface of the vehicle collides. , The adhesive 29 partially absorbs the stress generated in the door body 3 due to the impact. As a result, the outer upper panel 9a, the outer lower panel 9b, and the inner panel 7 are less likely to be broken even during a rear-end collision of the vehicle.

  Further, the adhesive 39 for bonding the outer upper panel 9a and the outer lower panel 9b to the window panel 5 is also an elastic adhesive, and the bonded portions of both the panels 5, 9a, 9b also partially apply the stress generated in the door body 3. It is designed to absorb. As the elastic adhesives 29 and 39, for example, urethane adhesives can be employed.

  As shown in FIG. 2, a portion of the inner panel 7 positioned above the window opening 13, specifically, a portion between the main body 11 and the outer standing wall 15 at the upper edge of the inner panel 7 is shown. In addition, a pair of hinge mounting portions 41 that are recessed on the front side and protrude rearward are provided on both the left and right sides in the vehicle width direction so as to be spaced from each other. On the pair of hinge mounting portions 41, an opening / closing hinge (not shown) fixed to the upper edge portion of the back door opening 103 along the rotational axis in the vehicle width direction is mounted from the front with a fastener such as a bolt. Is fixed.

  Further, damper mounting holes 43 penetrating the outer standing wall 15 are respectively formed in the middle in the vertical direction among the left and right side portions of the outer standing wall 15 of the inner panel 7. Further, of the upper half portion of the main body 11 of the inner panel 7, the portion extending from the left hinge mounting portion 41 to the left damper mounting hole 43 corresponding portion and the right hinge mounting portion 41 corresponding to the right damper mounting hole 43. A plurality of bracket mounting bosses 44 are provided to protrude rearward at intervals from each other, and a substantially L-shaped side reinforcing bracket 45 made of a metal plate is provided in the plurality of brackets. It is attached to the mounting boss 44 by fastening from the rear with a fastener such as a bolt or rivet.

  At the upper end portion of the side reinforcing bracket 45, a mounting reinforcing portion 47 is provided at a position corresponding to the hinge mounting portion 41 of the inner panel 7 so as to correspond to the outer shape of the hinge mounting portion 41 and protrude rearward. ing. The opening / closing hinge is attached to the attachment reinforcing portion 47 with a fastener used for fixing to the hinge attachment portion 41 with the hinge attachment portion 41 of the inner panel 7 interposed therebetween. That is, the open / close hinge is fastened to both the hinge mounting portion 41 of the inner panel 7 and the mounting reinforcing portion 47 of the side reinforcing bracket 45 with bolts.

  On the other hand, a damper mounting hole 49 is formed at a position corresponding to the damper mounting hole 43 of the inner panel 7 in the lower end side portion of the side reinforcing bracket 45. The lower end of the damper (not shown) for opening and closing the back door 1 is formed at the portion of the inner panel 7 where the damper mounting hole 43 is formed, and both damper mounting holes 43 and 49 of the inner panel 7 and the side reinforcing bracket 45 are provided. It is attached from the side by inserting fasteners such as bolts. The upper end of the damper is fixed at a position closer to the upper part on both the left and right sides of the back door opening 103 of the vehicle body 101. Thus, the side reinforcing bracket 45 is connected to the lower end of the damper and is connected to the vehicle body 101 via the damper.

  The damper is, for example, a cylinder-type stay in which gas is sealed. The damper is extendable in the longitudinal direction, and is urged so as to always expand by the pressure of the gas. The back door 1 can be opened and closed by rotating up and down around the hinge for opening and closing so that the back door opening 103 of the vehicle body 101 can be opened and closed. It is attached to the vehicle body 101 so that a sudden opening / closing operation is prevented by dynamic resistance.

  Further, on the lower side of the inner standing wall 19 of the inner panel 7, an interior component mounting portion 51 to which a wiper device for wiping the outer surface of the window panel 5 and a license plate illumination lamp (both not shown) are mounted from the front. And a plate mounting portion 53 having a pair of left and right plate mounting bosses 52 for mounting the number plate is provided with the front side of the inner panel 7 being recessed.

  The wiper device is attached to the interior component attachment portion 51 using an attachment bracket 50 that is a metal plate member, and the wiper is connected to the upper portion of the interior component attachment portion 51 and the holes 50a and 51a provided in the attachment bracket 50. The output shaft of the motor part of the apparatus is inserted into the internal space S, and is provided so as to protrude rearward from a wiper insertion hole 58 provided in the outer lower panel 9b. The lamp for illuminating the license plate is mounted so as to illuminate the lower part from the hole 54 provided in the lower part of the interior part mounting part 51.

  Further, a work opening 55 for performing a work for installing a latch 111 described later is formed on the inner panel 7 below the plate mounting portion 53. A recess formed on the front side of the inner panel 7 by the interior component mounting portion 51 and the plate mounting portion 53 and the work opening 55 is closed by a cover panel 57 (see FIG. 5).

  A pair of reinforcing ribs 59 extending in the vertical direction to the lower side of the outer standing wall 17 are provided on the left and right sides of the work opening 55 of the inner panel 7 so as to protrude rearward. Further, a portion of the inner panel 7 along the lower edge of the lower portion 3b located below the work opening 55, specifically, a lower side portion of the outer standing wall 15, is interposed between the pair of reinforcing ribs 59. A latch attachment portion 61 to which 111 is attached is provided. The latch 111 is an engagement device that detachably engages with a striker 113 (see FIG. 5) provided at the lower edge of the back door opening 103, and closes the back door 1 in cooperation with the striker 113. Thus, the lock device 115 for locking to the vehicle body 101 is configured.

  In the middle of the latch mounting portion 61 in the vehicle width direction, a latch opening 63 for allowing the latch 111 to face the outside is formed. One bolt insertion hole 67 through which the bolt 65 is inserted is formed in a portion of the lower side portion of the outer standing wall 15 located on the left and right sides of the latch opening 63. Further, as shown in FIG. 5, rivet insertion holes 69 through which blind rivets 76 are inserted are formed on both front and rear sides of the bolt insertion hole 67.

  A metal latch mounting bracket 71 for mounting the latch 111 to the inner panel 7 is provided on the surface on the inner space S side of the latch mounting portion 61, and the peripheral portion of the latch opening 63, that is, the latch mounting portion 61. It is attached as a rigid member to reinforce. The latch 111 is fixed to the latch mounting portion 61 via the latch mounting bracket 71.

  FIG. 6 is a perspective view of the latch mounting bracket 71 as viewed from above. As shown in FIG. 6, the latch mounting bracket 71 is a plate-like member having a longitudinal section crank shape in which a front end portion is bent up and a rear end side portion is bent downward. A rectangular flat plate-like seat portion 71a, a protruding piece 71b protruding upward from the front end portion of the seat portion 71a, and an adhesive piece 71c extending downward from the rear end portion of the seat portion 71a.

  Of the seat 71a of the latch mounting bracket 71, the portion corresponding to the latch opening 63 of the inner panel 7 has the same size as the latch opening 63 of the inner panel 7, as shown in FIGS. The latch opening 73 is formed. Further, as shown in FIGS. 5 and 6, a bolt insertion hole 75 is formed in a portion corresponding to the bolt insertion hole 67 of the inner panel 7 in the seat 71 a of the latch mounting bracket 71, and the rivet insertion hole of the panel 7. Rivet insertion holes 79 are provided in portions corresponding to 69.

  Further, an annular insertion portion 77 that is inserted into the bolt insertion hole 67 of the inner panel 7 is provided on the peripheral edge portion of the bolt insertion hole 75 of the latch mounting bracket 71 so as to protrude downward. The latch mounting bracket 71 is inserted into the rivet insertion hole 69 of the inner panel 7 and the rivet insertion hole 79 of the latch mounting bracket 71 in a state where the insertion portion 77 is inserted into the bolt insertion hole 75 of the inner panel 7. The blind rivet 76 is inserted from below the panel 7, and the tip end side of the rivet 76 is fastened to the latch mounting bracket 71, so that the rivet 76 is attached to the inner panel 7.

  As shown in FIG. 5, the adhesive piece 71c of the latch mounting bracket 71 faces the outer lower panel 9b, and a urethane-based adhesive or the like is applied to the outer lower panel 9b at a location adjacent to the lower edge adhesive portion 30b in the lower portion 3b. Bonded with an elastic adhesive 29. The adhesive piece 71c of the latch mounting bracket 71 is formed with a plurality of through holes 74 through which the adhesive 29 enters when the adhesive piece 71c is pressed against the outer lower panel 9b via the adhesive 29. . The plurality of through holes 74 are provided, for example, in a staggered manner over the entire adhesive piece 71c. The adhesive 29 for bonding the adhesive piece 71c of the latch mounting bracket 71 to the outer lower panel 9b enters the through hole 74 of the adhesive piece 71c and is cured. As a result, an anchor effect is obtained, and the adhesive strength of the adhesive piece 71c to the outer lower panel 9b can be increased.

  The latch 111 has a bracket 112 protruding to the side, and the bracket 112 is fixed to the latch mounting bracket 71 with a bolt 65 and attached to the latch mounting portion 61. Specifically, the latch 111 inserts the bolt 65 from below the inner panel 7 into the bolt insertion hole 67 of the inner panel 7 and the bolt insertion hole 75 of the latch mounting bracket 71, and the bolt 65 is inserted into the bracket of the latch 111. By being fastened to a bolt fastening hole 112 a formed in 112, it is attached to the latch mounting bracket 71 and fixed to the latch mounting portion 61 of the inner panel 7.

  In the inner space S of the lower portion 3b of the door body 3, as shown in FIGS. 2 and 3, a rectangular reinforcing sheet-like object 81 is extended in the same direction along the vehicle width direction. It is provided in the state. The reinforcing sheet-like object 81 is a net-like member made of a knotless network having a large number of meshes 83 such as rectangles, rhombuses, and hexagons, and the meshes of the meshes 83 are, for example, about 1.0 mm to 20.0 mm. And the thing of an appropriate magnitude | size is selected by the flowability of the adhesive agents 29 and 85 used for adhesion | attachment of these reinforcement sheet-like objects 81, and the adhesive retention strength after hardening.

  The reinforcing sheet 81 is formed by knitting a twisted yarn 81a made of a stretchable fiber such as polyester, polyethylene, rubber, or nylon, and has stretchability in multiple directions such as up, down, left, and right. The reinforcing sheet-like member 81 is arranged in substantially the entire area of the lower portion 3b of the door body 3, specifically, the entire central portion excluding the side end portions on the left and right sides of the lower portion 3b. It adheres to the outer lower panel 9b at both portions along the upper edge and the lower edge, and is stretched in the vertical direction in the internal space S of the lower portion 3b.

  As shown in FIG. 4, the upper edge portion of the reinforcing sheet-like material 81 is bonded to a portion along the upper edge bonding portion 30a of the lower portion 3b of the outer lower panel 9b with an elastic adhesive 85 such as a urethane-based adhesive. ing. The adhesive 85 that adheres the upper edge portion of the reinforcing sheet-like material 81, that is, the adhesive portion along the upper edge of the lower portion 3b wraps the adhesive portion of the reinforcing sheet-like material 81 from the inner panel 7 side. It adheres to the outer lower panel 9b through the mesh 83 of the object 81. As a result, the adhesive strength of the upper edge portion of the reinforcing sheet member 81 to the outer lower panel 9b is increased as compared with the case where the adhesive portion of the reinforcing sheet member 81 is overlapped with the adhesive previously applied to the outer lower panel 9b. be able to.

  As shown in FIGS. 4 and 5, the lower edge portion of the reinforcing sheet 81 is bonded to the outer lower panel 9b at a location adjacent to the lower edge bonding portion 30b of the lower portion 3b. As a result, at the time of a rear collision of the vehicle, the adhesive sheet 81 and the outer lower panel 9b remain bonded together with the lower edge bonding portion 30b of the lower portion 3, and the reinforcing sheet 81 is expanded in a large area. It can remain in the lower part 3b of the main body 3. The lower edge portion of the reinforcing sheet-like object 81 is different in how it is adhered to the outer lower panel 9b between the portion located behind the latch mounting portion 61 and the other portions.

  Specifically, a portion of the lower edge portion of the reinforcing sheet-like member 81 positioned on the left and right sides of the latch mounting portion 61 is bonded to the lower edge of the lower portion 3b of the outer lower panel 9b as shown in FIG. The portion adjacent to the portion 30b is bonded alone with an elastic adhesive 85 such as urethane adhesive. The adhesion portion of the reinforcing sheet 81 is wrapped with an adhesive 85 from the inner panel 7 side, and adhered to the outer lower panel 9b in the same state as the upper edge of the reinforcing sheet 81.

  On the other hand, as shown in FIG. 5, a portion of the lower edge portion of the reinforcing sheet-like material 81 located behind the latch mounting portion 61 is an adhesive 29 that bonds the adhesive piece 71c of the latch mounting bracket 71 to the outer lower panel 9b. And bonded to the outer lower panel 9b together with the bonding piece 71c. That is, the adhesive piece 71c of the latch mounting bracket 71 is bonded to the outer lower panel 9b with the reinforcing sheet member 81 sandwiched between the lower edge portion of the reinforcing sheet member 81 and the outer lower panel 9b.

  The adhesive 29 for bonding the adhesive piece 71c of the latch mounting bracket 71 to the outer lower panel 9b together with the lower edge portion of the reinforcing sheet-like material 81 wraps the lower edge portion of the reinforcing sheet-like material 81 from the adhesive piece 71c side, and this adhesion While adhering to the piece 71c, it adheres to the outer lower panel 9b through the mesh 83 of the reinforcing sheet 81. As a result, the reinforcing sheet-like material 81 is a woven or knitted material having no gaps or holes such as the mesh 83 through which the adhesive 29 is passed, and is an adhesive in which both surfaces of the reinforcing sheet-like material 81 are separately applied. Compared to the case of bonding to the adhesive piece 71c of the latch mounting bracket 71 and the outer lower panel 9b, respectively, the adhesive strength of the reinforcing sheet-like object 81 to the adhesive piece 71c of the latch mounting bracket 71 and the outer lower panel 9b is enhanced.

  An adhesive 85 that bonds the upper edge of the reinforcing sheet 81 and an adhesive 85 that bonds the portions of the lower edge of the reinforcing sheet 81 that are located at the rear of the left and right sides of the latch mounting portion 61. The masking sheet 97 used when adhering the reinforcing sheet 81 remains on the surface opposite to the outer lower panel 9b as the adherend. Further, as shown in FIG. 2, the reinforcing sheet-like object 81 has an opening 87 for passing a power supply (not shown) for supplying power to a license plate lamp and an output shaft of a wiper device. A hole 89 is formed.

  To assemble the back door 1 having the above-described configuration, before assembling the outer upper panel 9a and the outer lower panel 9b to the inner panel 7, the pair of side reinforcing brackets 45 and the latch mounting bracket 71 are attached to the inner panel 7, and the outer lower panel 9b. It is necessary to adhere the reinforcing sheet 81 to the surface. Below, the adhesion | attachment operation | work of the reinforcement sheet-like object 81 with respect to the outer lower panel 9b is demonstrated, referring FIG. 7 (a), (b). FIG. 7A is a cross-sectional view showing the application process of the adhesive 85. FIG. 7B is a cross-sectional view showing the pressing process of the adhesive 85.

  In the bonding operation of the reinforcing sheet member 81 to the outer lower panel 9b, first, the reinforcing sheet member 81 is placed on the surface of the outer lower panel 9b facing the inner panel 7, and the reinforcing sheet member 81 is placed on the outer lower panel 9b. In step S1, the position is adjusted to a predetermined position. At this time, the upper edge portion of the reinforcing sheet member 81 is disposed at a position along the planned adhesion portion with the inner panel 7 at the upper edge portion of the outer lower panel 9b, and the lower edge portion of the reinforcing sheet member 81 is It arrange | positions in the position along the adhesion plan part with the inner panel 7 in the lower edge part of the outer lower panel 9b.

  Next, the portion of the outer lower panel 9b along the portion scheduled to be bonded to the inner panel 7 at both the upper and lower edges is shown in FIG. 7 (a) where the upper and lower edges of the reinforcing sheet-like material 81 are disposed. As described above, the adhesive 85 is applied so as to cover the adhesive portions of the upper and lower edges of the reinforcing sheet 81 by discharging the adhesive 85 from the nozzle 201 while scanning the nozzle 201 of the bonding apparatus. . At this time, the adhesive 85 is not applied to the portion of the outer lower panel 9b located behind the latch mounting portion 61.

  Subsequently, as shown in FIG. 7B, the adhesive 85 is pressed against the reinforcing sheet-like object 81 side, that is, the outer lower panel 9 b side through the masking sheet 97 with the pressing roller 203. As a result, in the portion of the reinforcing sheet-like material 81 where the adhesive 85 is applied, the adhesive 85 is filled into the mesh 83 and spreads through the mesh 83 to the outer lower panel 9b. A twisted yarn 81 a that constitutes a bonding portion at the edge is embedded in the adhesive 85.

  Thereafter, the adhesive 85 is cured (dried), whereby the upper and lower edges of the reinforcing sheet-like material 81 are bonded to the outer lower panel 9b. At this stage, a portion of the lower edge portion of the reinforcing sheet-like object 81 located behind the latch mounting portion 61 is not bonded anywhere.

  Next, an operation of assembling the back door 1 by assembling the outer upper panel 9a and the outer lower panel 9b to the inner panel 7 is performed. Below, the operation | work which assembles the outer lower panel 9b to the inner panel 7 is demonstrated, referring FIG. 8 (a), (b). FIG. 8A is a cross-sectional view showing the application process of the adhesive 29. FIG. 8B is a cross-sectional view showing a bonding process between the inner panel 7 and the outer lower panel 9b.

  In order to assemble the outer lower panel 9b to the inner panel 7, first of all, the bonding device of the bonding apparatus as shown in FIG. 8A is attached to the portion of the outer flange 17 and the inner flange 21 of the inner panel 7 to be bonded to the outer lower panel 9b. The adhesive 29 is applied by discharging the adhesive 29 from the nozzle 201 while scanning the nozzle 201. At this time, the adhesive 29 is also applied to the adhesive piece 71c of the latch mounting bracket 71 at the portion of the outer flange 17 of the inner panel 7 located behind the latch mounting portion 61.

  Next, the outer lower panel 9b is positioned and overlapped with the lower half portion of the inner panel 7 by inserting the positioning convex portion 23 into the positioning hole 35 of the protruding piece 33, and as shown in FIG. Of the outer flange 17 and the inner flange 21, a portion applied with the adhesive 29 is pressed by a pressing jig 205.

  At this time, an unbonded portion of the reinforcing sheet-like object 81 attached to the outer lower panel 9b overlaps with the adhesive piece 71c of the latch mounting bracket 71 via the adhesive 29, and the adhesive 29 is pressed by the pressing jig 205. The mesh 83 of the reinforcing sheet 81 is filled and reaches the outer lower panel 9 b through the mesh 83, and the lower edge of the reinforcing sheet 81 is embedded in the adhesive 29.

  In addition, the adhesive 29 enters the through hole 74 of the adhesive piece 71c in accordance with the pressing of the outer lower panel 9b against the adhesive piece 71c of the latch mounting bracket 71, and enters the back side (rear side) of the adhesive piece 71c. Become. Thus, the through-hole 74 provided in the adhesive piece 71c of the latch mounting bracket 71 serves to release the adhesive 29, so that the pressing force of the outer lower panel 9b against the adhesive piece 71c can be reduced.

  Thereafter, the adhesive 29 is cured (dried) to bond the outer flange 17 of the inner panel 7 and the outer lower panel 9b. At the same time, the adhesive piece 71c of the latch mounting bracket 71 and the lower edge portion of the reinforcing sheet-like object 81 are adhered, and the adhesive piece 71c also adheres the lower edge portion of the reinforcing sheet-like object 81 to the outer lower panel 9b. Is done.

  In this way, the reinforcing sheet-like material 81 can be applied to the adhesive piece 71c of the latch mounting bracket 71 and the outer lower panel 9b and the reinforcing sheet-like material 81 only by one application of the adhesive 29 necessary for the bonding work. The bonding operation can be simplified. In addition, since the adhesive 29 is allowed to escape through the through hole 74 provided in the adhesive piece 71c of the latch mounting bracket 71, the adhesive piece 71c of the latch mounting bracket 71 is bonded to the outer lower panel 9b and the outer panel 9b is bonded to the outer panel 9b. Assembling work of the lower panel 9b can be performed stably.

  Further, the outer upper panel 9a is assembled to the inner panel 7 in the same procedure as the outer lower panel 9b. That is, an adhesive is applied to a portion of the outer flange 17 and the inner flange 21 of the inner panel 7 to be bonded to the outer upper panel 9a, and then the outer upper panel 9a is overlaid on the upper end portion of the inner panel 7. The outer upper panel 9a is bonded to the portion of the outer flange 17 and the inner flange 21 of the inner panel 7 where the adhesive is applied.

  Thereafter, an adhesive 39 is applied to the stepped portions 27 and 31 of the outer upper panel 9a and the outer lower panel 9b bonded to the inner panel 7 and the portion to be bonded to the window panel 5 in the outer flange 17 of the inner panel 7. Apply. Then, the window panel 5 is fitted between the step portions 27 and 31, and the outer upper panel 9 a and the outer lower panel 9 b are bonded to the window panel 5 with an adhesive 39.

  Finally, the latch 111 is inserted into the internal space S of the door body 3 from the work opening 55 of the inner panel 7, and the latch 111 is fixed to the latch mounting bracket 71 with the bolt 65. Further, after the wiper device and the license plate illumination lamp are attached to the interior part attaching portion 51 of the door body 3, the cover panel 57 is attached to the front side of the door body 3.

  Through the above operations, the back door 1 shown in FIG. 1 is assembled. Note that the bonding operation of the window panel 5 can be performed together with the bonding operation of the outer upper panel 9a and the outer lower panel 9b and the inner panel 7 by previously applying the adhesive 39 to the window panel 5 side.

-Effect of the embodiment-
FIG. 9 is a cross-sectional view illustrating an example of the state of the lower portion 3b at the time of a rear surface collision of the back door 1. In this embodiment, the reinforcing sheet-like object 81 is provided in the inner space S in the lower part 3b of the door body 3 in a state where the reinforcing sheet-like object 81 is widened in the vehicle width direction. The latch mounting bracket 71 used for mounting the latch 111 engaged with the vehicle body 101 to the inner panel 7 is bonded to the outer lower panel 9b having higher toughness than the inner panel 7 at both portions along the lower edge. As shown in FIG. 9, even if the rear panel collision of the vehicle breaks the portion of the inner panel 7 along the lower edge bonding portion 30b of the inner panel 7, The object 81 is secured by the latch mounting bracket 71. This prevents the reinforcing sheet-like object 81 from being separated from the inner panel 7 as well as the outer lower panel 9b, and prevents the inner space S of the lower portion 3b from being completely opened outside the vehicle without the reinforcing sheet-like object 81. Moreover, since the reinforcing sheet-like material 81 has stretchability, even if the lower portion 3b of the door body 3 is greatly deformed, the reinforcement sheet-like material 81 is stretched according to the deformation and can withstand an impact at the time of a rear-end collision of the vehicle. It is hard to do. Therefore, even if the two panels 7 and 9b constituting the lower portion 3b of the door body 3 are scattered at the time of a rear-end collision of the vehicle, the reinforcing sheet-like object 81 is left at a position corresponding to the panel scattered portion of the lower portion 3b. Therefore, it is possible to prevent a large hole from opening in the lower portion 3b.

  In the above embodiment, the adhesive piece 71c of the latch mounting bracket 71 is adhered to the outer lower panel 9b together with the lower edge portion of the reinforcing sheet 81 at the location adjacent to the lower edge adhesive portion 30b in the lower portion 3b of the door body 3. However, the present invention is not limited to this. For example, the latch mounting bracket 71 is configured such that the adhesive piece 71c extends upward from the rear end portion of the seat portion 71a, and the adhesive piece 71c is reinforced at a location away from the lower edge adhesive portion 30b of the lower portion 3b. Both the object 81 and the outer lower panel 9b may be bonded.

  Further, in the above embodiment, the reinforcing sheet-like object 81 is a net-like member made of a rectangular no-node network, but the present invention is not limited to this, and the reinforcing sheet-like object 81 is made of a knot-like net. It doesn't matter. The reinforcing sheet-like material 81 may be a knitted or woven fabric made of stretchable fibers, and is a resin sheet having both stretchability and tensile strength made of polyvinyl butyral (PVB). It doesn't matter. Moreover, the reinforcing sheet-like object 81 may be formed in other shapes such as a trapezoidal shape. As the reinforcing sheet-like material 81, it is desirable to have stretchability in multiple directions, but any material having stretchability in at least one direction can be employed.

  Moreover, in the said embodiment, although the adhesive agent 85 which adhere | attaches the up-and-down both edge part of the reinforcement sheet-like object 81 to the outer lower panel 9b was an elastic adhesive agent, it is not limited to this, Adhesives other than elastic adhesives such as epoxy adhesives can also be employed. This is because the adhesive 29 for bonding the inner panel 7 and the outer panel 9, the adhesive 29 for bonding the latch mounting bracket 71 together with the reinforcing sheet 81 to the outer lower panel 9 b, and the window on the inner panel 7 and the outer panel 9. The same applies to the adhesive 39 that bonds the panel 5.

  In the above embodiment, the latch 111 is attached to the inner panel 7 of the door body 3 and the striker 113 that engages with the latch 111 is provided on the vehicle body 101 as an example. Without limitation, the striker 113 may be attached to the inner panel 7 of the door body 3 as an engagement device, and the body 111 may be provided with a latch 111 that engages with the striker 113. In this case, an adhesive piece facing the outer lower panel 9b is provided on a bracket for attaching the striker 113 to the inner panel 7, and this adhesive piece is an adhesive part along the lower edge of the lower portion 3b of the reinforcing sheet-like material 81. The reinforcing sheet-like material 81 may be bonded to the outer lower panel 9b by being sandwiched between the outer lower panel 9b and an adhesive.

  Moreover, in the said embodiment, although the outer panel 9 illustrated the form comprised by the two division body of the outer upper panel 9a and the outer lower panel 9b, it is not limited to this, The outer panel 9 is a single piece. The panel may be configured. In this case, for example, the outer panel 9 has a configuration in which a middle panel in which a window opening is formed between the outer upper panel 9a and the outer lower panel 9b is provided, and these three members are integrally molded. Manufactured.

  As described above, the present invention is useful for a vehicle back door. In particular, even when the inner panel and the outer panel constituting the lower portion of the door main body are scattered at the time of a rear collision of the vehicle, the lower portion It is suitable for a vehicle back door that is required to prevent the opening of a large hole.

S Internal space 1 Back door 3 Door body 3a Upper part 3b Lower part 5 Window panel 6 Window part 7 Inner panel 9 Outer panel 29 Adhesive 71 Latch mounting bracket 71c Adhesive piece 81 Reinforcement sheet-like material 83 Mesh 85 Adhesive 101 Car body 103 Back door opening 111 Latch (engagement device)

Claims (5)

The resin inner panel (7) and the resin outer panel (9) are adhered to each other so that they face each other, and an internal space (S) is provided between these two panels (7, 9). It has a door body (3) with a window opening (13) formed in the half,
An engagement device (111) that is detachably engaged with the vehicle body (101) is attached to the inner space (S) side of the inner panel (7) along the lower edge of the door body (3). A vehicle back door with a metal bracket (71) attached thereto,
The toughness of the outer panel (9) is higher than the toughness of the inner panel (7),
In the inner space (S) of the lower portion (3b) located below the window opening (13) in the door body (3), at least the lower portion in a state of being widened in the vehicle width direction. (3b) There is provided a reinforcing sheet-like material (81) having stretchability bonded to the outer panel (9) at both parts along the upper edge and the lower edge,
The bracket (71) sandwiches an adhesive portion along the lower edge of the lower portion (3b) of the reinforcing sheet-like material (81) between the outer panel (9) and an adhesive (29). The vehicular back door characterized by having an adhesive piece (71c) bonded to the outer panel (9) together with the reinforcing sheet (81). In the vehicle back door according to claim 1,
When the adhesive piece (71c) is pressed against the outer panel (9) via the adhesive (29), the adhesive (29) is attached to the adhesive piece (71c) of the bracket (71). A vehicular back door, wherein a plurality of through holes (74) for entering the vehicle are formed. In the vehicle back door according to claim 1 or 2,
The lower edge part in the lower part (3b) of the door body (3) is a lower edge adhesive part (30b) in which the inner panel (7) and the outer panel (9) are bonded,
Of the reinforcing sheet-like material (81), an adhesive portion along the lower edge of the lower portion (3b) is an adhesive piece (71c) of the bracket (71) at a location adjacent to the lower edge adhesive portion (30b). In addition, the vehicle back door is bonded to the outer panel (9). In the vehicle back door as described in any one of Claims 1-3,
The reinforcing sheet-like material (81) is a net-like member having a large number of meshes (83),
The adhesive (29) for adhering the adhesive piece (71c) of the bracket (71) is formed by attaching an adhesive portion along the lower edge of the lower part (3b) of the reinforcing sheet-like material (81) to the adhesive piece ( 71c) A vehicle bag characterized by being wrapped from the side and adhering to the adhesive piece (71c) and adhering to the outer panel (9) through the mesh (83) of the reinforcing sheet (81) door. The vehicle back door according to claim 4,
The adhesive (85) for adhering the adhesive portion along the upper edge of the lower portion (3b) of the reinforcing sheet-like material (81) is formed on the reinforcing sheet-like material (81) from the inner panel (7) side. A vehicular back door characterized by wrapping an adhesive portion and adhering to the outer panel (9) through a mesh (83) of the reinforcing sheet (81).

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