In-vehicle door latch structure and vehicle

A latch structure for an in-vehicle door, the latch structure comprising:

• a door that is changeable between a closed state in which the door covers a door opening provided on a peripheral wall of a vehicle and an opened state in which the door opens the door opening;
• a floor panel that constitutes a floor surface of an interior space;
• a door-side engaging portion mounted on the door;
• and
• a floor-side engaging portion mounted on the floor panel and engageable with the door-side engaging portion when the door is in the closed state, the floor-side engaging portion includes a fixing member having a position that is fixed with respect to the floor panel, wherein
• the door-side engaging portion includes a movable member that is movable between an engaging position in which the movable member engages with the fixing member and a disengaging position in which the movable member disengages with the fixing member;
• one of the fixing member and the movable member includes an engaging recessed portion or an engaging hole, and the other includes an engaging protruded portion to be inserted into the engaging recessed portion or the engaging hole;
• a recess or an accommodating recessed portion that is a hole penetrating vertically is provided on an upper surface of the floor panel;
• at least a part of the floor-side engaging portion is buried in the accommodating recessed portion;
• and
• a passage groove that is connected to the accommodating recessed portion and that allows the movable member to pass through is provided at a position of the floor panel that overlaps with a movement locus of the movable member.

A vehicle equipped with a latch structure for an in-vehicle door, the latch structure comprising:

• a door that is changeable between a closed state in which the door covers a door opening provided on a peripheral wall of a vehicle and an opened state in which the door opens the door opening;
• a floor panel that constitutes a floor surface of an interior space;
• a door-side engaging portion mounted on the door;
• a floor-side engaging portion mounted on the floor panel and engageable with the door-side engaging portion when the door is in the closed state;
• and
• a slope plate that is changeable between a deployed state in which the slope plate extends from a lower end of the door opening toward a road surface, and an accommodated state in which the slope plate is accommodated in an underfloor space below the floor panel, wherein,
• the floor panel includes a sealing surface on a peripheral edge;
• the door includes a sealing member that comes into close contact with the sealing surface and seals a gap between the door and the floor panel in the closed state;
• the door is set to a position and size that secures a movement path of the slope plate when the door is in the closed state and the slope plate is changed from the accommodated state to the deployed state or from the deployed state to the accommodated state;
• and
• the slope plate is changeable from the accommodated state to the deployed state or from the deployed state to the accommodated state while the door is in the closed state.