Abstract: A vehicle body lower portion structure includes: a lower frame member formed as a chamber that extends in a vehicle body longitudinal direction, having a guide portion at inner surfaces of wall portions that structure the chamber, the lower frame member being disposed at a vehicle body lower side; and a reinforcing member formed as a second chamber that extends in the vehicle body longitudinal direction, having a plurality of projections at outer surfaces of wall portions that structure the second chamber, the reinforcing member being provided within the chamber of the lower frame member in a state in which the plurality of projections are made to contact the guide portion.

Abstract: The present disclosure provides a vehicle body lower portion structure including: a lower portion framework member, formed in a chamber shape extending in a vehicle body front-and-rear direction, including a guide portion at an inner face of a wall portion structuring the chamber shape, and being disposed at a vehicle body lower side; a battery, installed on a battery frame, and is disposed at a vehicle width direction inner side of the lower portion framework member; and a reinforcing member formed in a chamber shape extending in the vehicle body front-and-rear direction, provided inside a chamber of the lower portion framework member in a state of being supported at the guide portion, and at least a portion of the reinforcing member overlapping with at least one of the battery or the battery frame in a side view seen in a vehicle width direction.

Abstract: There is provided a vehicle lower section structure including: a suspension member that extends in a vehicle front-rear direction and that includes a pair of side rails that are be separated from each other in a vehicle width direction; a vehicle onboard device that is formed with a substantially box shape, that is disposed between one of the side rails and the other of the side rails, and that includes a bottom face disposed substantially in the same plane as a bottom face of the suspension member; and a flow smoothing section that is provided at at least one of the bottom face of the vehicle onboard device or the bottom face of the suspension member, and that is provided projecting out toward a vehicle lower side and extending along the vehicle front-rear direction.

Abstract: A vehicle resin back door installation method includes: a vehicle body-side positioning step of attaching first positioning jigs to a vehicle body, and forming first sloping surfaces; a back door-side positioning step of attaching second positioning jigs to a back door, and forming second sloping surfaces; a temporary placing step of bringing the second sloping surfaces into contact with the first sloping surfaces, at the same time temporarily placing the back door on the vehicle body, and centering the back door in the vehicle width direction with respect to the vehicle body; an attaching step of attaching the back door to the vehicle body; and a detaching step of detaching the first positioning jigs from the vehicle body and detaching the second positioning jigs from the back door.

Abstract: A vehicle body structure includes a frame structure portion configured to define an opening; the frame structure portion including a first panel having a first joint portion, a second panel having a second joint portion, and a first adhesive portion that adheres to the first joint portion and the second joint portion; a windowpane that is provided on a vehicle outside of the opening and that covers the opening; and a second adhesive portion that adheres to the first panel, the second panel, and the windowpane, wherein at least one of the first panel and the second panel is made of resin, the second adhesive portion is arranged closing off or covering an open end of a gap in a joint between the first panel and the second panel, and the first adhesive portion is arranged within the gap.

Abstract: A method of assembling a vehicle back door includes forming a chamber by joining, with an adhesive, an inner panel made of resin to an outer panel made of resin; and inserting a first holding jig inside the chamber through a hole formed in the outer panel and allowing the adhesive to harden in a state in which a joint portion between the inner panel and the outer panel is sandwiched between and held by the first holding jig and a second holding jig placed outside the chamber.

Abstract: A vehicle body front section structure capable of suppressing deformation of a vehicle body in a small overlap collision is obtained. A vehicle body front section structure includes a front side member with a crash box attached to a vehicle front end, a coupling member that is interposed between and joined to the crash box and the front side member at a vehicle front end side, and that is joined to a fender apron section at a vehicle rear end, and a spacer that is disposed at a portion overlapping with the front side member in a vehicle vertical direction between the front side member and the coupling member.

Abstract: A vehicle resin back door structure includes a back door panel made of resin, which has a first opening, and of which a marginal edge portion that forms the first opening is formed in a closed sectional shape; a bracket made of metal, which is fixed inside the closed section of the marginal edge portion, and of which a portion is exposed by a second opening formed in the marginal edge portion; and a back window glass of which a peripheral edge portion is joined to the marginal edge portion including the portion of the bracket that is exposed by the second opening.

Abstract: A vehicular resin back door structure includes an inner panel that is made of resin and defines a frame of a resin back door configured to be supported by a vehicle body, and that is formed with an opening through which a vehicle driver can view rearwardly at an upper portion of the inner panel; an outer panel that is made of resin and disposed at a periphery of the opening, and that is joined to the inner panel by a first adhesive to form, together with the inner panel, a frame section including an internal chamber; a glass sheet that is joined to the inner panel by a second adhesive; and a contact wall portion that forms part of a portion of the inner panel, and that directly or indirectly contacts the vehicle body in a closed state of the vehicular resin back door.

Abstract: A vehicle hood structure including a hood outer panel and a hood inner panel, wherein the hood inner panel is made from a resin, is disposed at a hood lower side of the hood outer panel, is joined to the hood outer panel, and includes a general portion, plural ribs and a weakened portion, wherein: the general portion has a general face that faces the hood outer panel, the plural ribs project out from the general portion toward the hood outer panel side and extend along the general face, and are set at intervals in either a hood width direction or a hood front-rear direction, and the weakened portion is formed at the ribs and extends along an extension direction of the ribs.

Abstract: A vehicle front section structure includes a front side member that is formed with a front flange at a vehicle front-rear direction front end; a crash box that is joined to the front flange at a rear flange formed at a vehicle front-rear direction rear end; and a coupling member that is joined to a fender apron section at a vehicle rear end. The coupling member includes a joining plate formed at a vehicle front end side joined to the front flange in an interposed state between the front flange and the rear flange, with a front end side of a portion of the coupling member positioned at a vehicle width direction outer side of the front side member angled such that in plan view a rear side is separated further to the vehicle width direction outer side from the front side member than the vehicle front side.

Abstract: A vehicle back door structure including: a back door panel made of resin having, in at least a part of a peripheral edge thereof, a recessed portion equipped with a pair of side walls and a bottom wall that interconnects vehicle front sides of the pair of side walls, with a step portion, that has one side-wall side positioned at a vehicle rear side of another side-wall side, being formed in the bottom wall; and a reinforcement rib that is formed integrally with a vehicle rear side surface of the bottom wall, that straddles the step portion, and that bridges the pair of side walls.

Abstract: In a vehicle back door main body, an outer upper panel made of CFRP is joined to an upper portion of an inner panel made of CFRP, and an outer lower panel made of a resin weaker than CFRP is joined to a lower portion of the inner panel. Of an outer edge portion of this back door main body, an upper portion side is a first outer edge portion that is reinforced by the outer upper panel, and a lower portion side is a second outer edge portion having a lower strength than the first outer edge portion. Also, a boundary portion between the first outer edge portion and the second outer edge portion where there is a strength difference is set at a portion weakened by being adjacent to a small window opening.

Abstract: A vehicular resin back door structure includes an inner panel that is made of resin and defines a frame of a resin back door configured to be supported by a vehicle body, and that is formed with an opening through which a vehicle driver can view rearwardly at an upper portion of the inner panel; an outer panel that is made of resin and disposed at a periphery of the opening, and that is joined to the inner panel by a first adhesive to form, together with the inner panel, a frame section including an internal chamber; a glass sheet that is joined to the inner panel by a second adhesive; and a contact wall portion that forms part of a portion of the inner panel, and that directly or indirectly contacts the vehicle body in a closed state of the vehicular resin back door.

Abstract: A method of assembling a vehicle back door includes forming a chamber by joining, with an adhesive, an inner panel made of resin to an outer panel made of resin; and inserting a first holding jig inside the chamber through a hole formed in the outer panel and allowing the adhesive to harden in a state in which a joint portion between the inner panel and the outer panel is sandwiched between and held by the first holding jig and a second holding jig placed outside the chamber.

Abstract: A vehicle back door structure including: a back door panel made of resin having, in at least a part of a peripheral edge thereof, a recessed portion equipped with a pair of side walls and a bottom wall that interconnects vehicle front sides of the pair of side walls, with a step portion, that has one side-wall side positioned at a vehicle rear side of another side-wall side, being formed in the bottom wall; and a reinforcement rib that is formed integrally with a vehicle rear side surface of the bottom wall, that straddles the step portion, and that bridges the pair of side walls.

Abstract: A vehicle hood structure including a hood outer panel and a hood inner panel, wherein the hood inner panel is made from a resin, is disposed at a hood lower side of the hood outer panel, is joined to the hood outer panel, and includes a general portion, plural ribs and a weakened portion, wherein: the general portion has a general face that faces the hood outer panel, the plural ribs project out from the general portion toward the hood outer panel side and extend along the general face, and are set at intervals in either a hood width direction or a hood front-rear direction, and the weakened portion is formed at the ribs and extends along an extension direction of the ribs.

Abstract: A vehicle resin back door installation method includes: a vehicle body-side positioning step of attaching first positioning jigs to a vehicle body, and forming first sloping surfaces; a back door-side positioning step of attaching second positioning jigs to a back door, and forming second sloping surfaces; a temporary placing step of bringing the second sloping surfaces into contact with the first sloping surfaces, at the same time temporarily placing the back door on the vehicle body, and centering the back door in the vehicle width direction with respect to the vehicle body; an attaching step of attaching the back door to the vehicle body; and a detaching step of detaching the first positioning jigs from the vehicle body and detaching the second positioning jigs from the back door.

Abstract: A vehicle body structure includes a frame structure portion configured to define an opening; the frame structure portion including a first panel having a first joint portion, a second panel having a second joint portion, and a first adhesive portion that adheres to the first joint portion and the second joint portion; a windowpane that is provided on a vehicle outside of the opening and that covers the opening; and a second adhesive portion that adheres to the first panel, the second panel, and the windowpane, wherein at least one of the first panel and the second panel is made of resin, the second adhesive portion is arranged closing off or covering an open end of a gap in a joint between the first panel and the second panel, and the first adhesive portion is arranged within the gap.

Abstract: A vehicle resin back door structure includes a back door panel made of resin, which has a first opening, and of which a marginal edge portion that forms the first opening is formed in a closed sectional shape; a bracket made of metal, which is fixed inside the closed section of the marginal edge portion, and of which a portion is exposed by a second opening formed in the marginal edge portion; and a back window glass of which a peripheral edge portion is joined to the marginal edge portion including the portion of the bracket that is exposed by the second opening.