Abstract: There is provided a structure for a filling section of a fuel filler pipe which communicates with and connects between a filling port for inserting a nozzle of a filling gun and a fuel tank for reserving a fuel. The fuel filler pipe includes a straight pipe section which extends from the filling port to a fuel tank side and which inclines downward relative to a horizontal direction. The straight pipe section includes a capless mechanism section including a shutter to open or close the filling port. The straight pipe section includes on the filling port side thereof an end surface which inclines relative to a cross section of the straight pipe in a direction of a main body surface of a lid section closed that is provided on a panel member of a vehicle body. This structure realizes convenience in refilling and a compact size of the adapter.

Abstract: A flap valve mechanism in an open-close device for fuel tank includes an open-close member, a shaft support mechanism, a spring and a gasket. The shaft support mechanism includes bearing members and a rotation restricting mechanism. The rotation restricting mechanism includes restricting elements and restricted elements to be engaged with the restricting elements. At a first position, the restricting elements are engaged with the restricted elements, so that the open-close member is moved in a direction of warping the gasket. At a second position, the restricting elements are disengaged from the restricted elements, so that the open-close member is rotated about shaft members.

Abstract: A flap valve mechanism in an open-close device for fuel tank includes an open-close member, a shaft support mechanism, a spring and a gasket. The shaft support mechanism includes bearing members and a rotation restricting mechanism. The rotation restricting mechanism includes restricting elements and restricted elements to be engaged with the restricting elements. At a first position, the restricting elements are engaged with the restricted elements, so that the open-close member is moved in a direction of warping the gasket. At a second position, the restricting elements are disengaged from the restricted elements, so that the open-close member is rotated about shaft members.

Abstract: There is provided a structure for a filling section of a fuel filler pipe which communicates with and connects between a filling port for inserting a nozzle of a filling gun and a fuel tank for reserving a fuel. The fuel filler pipe includes a straight pipe section which extends from the filling port to a fuel tank side and which inclines downward relative to a horizontal direction. The straight pipe section includes a capless mechanism section including a shutter to open or close the filling port. The straight pipe section includes on the filling port side thereof an end surface which inclines relative to a cross section of the straight pipe in a direction of a main body surface of a lid section closed that is provided on a panel member of a vehicle body. This structure realizes convenience in refilling and a compact size of the adapter.