Sealing structure of fuel inlet box

A sealing structure of a fuel inlet box for sealing the fuel inlet box against a mounting surface at a periphery of a mounting hole of a vehicle body side panel,

• the fuel inlet box having an opening to be opened and closed by a lid body and mounted on the mounting surface, and
• the fuel inlet box comprising a main body member, and a sealing member formed of an elastic material and sealing a gap between the main body member and the mounting surface,
• the main body member having:
• a box portion having a side wall surrounding an inner space, the opening communicating with the inner space and a connection port of a fuel filler pipe, and
• a storage wall bulging from the side wall of the box portion toward an outside of the box portion and having a storage space communicating with the inner space of the box portion and rotatably storing an arm portion provided on the lid body, and
• the storage wall having a storage opening periphery constituting part of an opening periphery surrounding the opening, at least the storage opening periphery of the opening periphery having a flange portion facing the mounting surface,
• the storage wall having a base portion disposed on a vehicle body inner side of the vehicle body side panel, the base portion being connected through the mounting hole of the vehicle body side panel to the flange portion disposed on a vehicle body outer side of the vehicle body side panel,
• the mounting surface of the vehicle body side panel interposed between the base portion and the flange portion, and the flange portion facing the mounting surface through a gap extending in a planar direction of the mounting surface,
• the sealing member having a seal lip provided on the flange portion of at least the storage opening periphery of the opening periphery and extending toward the mounting surface and inclined toward an outer peripheral side of the opening periphery,
• an outer basing point of a root portion of the seal lip being located at a facing surface of the flange portion facing the mounting surface, wherein
• the facing surface of the flange portion facing the mounting surface has a stepped portion bent in a direction away from the mounting surface,
• the outer basing point of the root portion of the seal lip being located in a vertical wall portion of the stepped portion extending in a direction away from the mounting surface, and
• an inner basing point of the root portion of the seal lip portion being located in an inner peripheral portion of the facing surface of the flange portion closer to the opening than the stepped portion.