Toyota Jidosha Kabushiki Kaisha

Toyoda Gosei Co., Ltd.

Satoshi Yamamoto

Chiaki Kataoka

Masaki Akagi

Hiroyuki Hagano

To obtain a fuel filler structure for a fuel tank wherein when causing an opening and closing valve to close, it can be ensured that the opening and closing valve does not rapidly rotate to a closed position in which it closes a fuel fill inlet, and when causing the opening and closing valve to open, the opening and closing valve can be opened with a small force. A fuel filler structure is equipped with a damper on the near side of a flapper valve in the insertion direction of a fuel nozzle. When the flapper valve rotates to an open position, the damper does not act on the flapper valve, and when the flapper valve rotates to a closed position, the damper acts on the flapper valve.

Fuel filler structure for fuel tank

A fueling portion structure of a fuel tank can reliably close a fueling port, and at which pulling-out of a fueling gun from the fueling port is easier. A center of a rotation shaft and a contact position when valve is closed, that a spring for the flapper valve contacts when a flapper valve is at a closed-valve position, are connected, and a reference segment when the valve is closed is assumed. The center of the rotation shaft and a contact position when the valve is open, at a time when the flapper valve is at open-valve position HP, are connected, and a reference segment when the valve is open is assumed. A spring shaft is provided further toward the contact position when valve is closed side than a bisector of an angle formed by the reference segment when valve is closed and the reference segment when valve is open.

Fueling portion structure of fuel tank

A fuel tank opening-closing device has a tank opening forming member, a flap valve mechanism that has an opening-closing member, and an opening-closing activation mechanism that switches between the locked position and the unlocked position that does the opening operation of the opening-closing member. The opening-closing activation mechanism has a nozzle detection mechanism which has introductory push parts mounted on the opening-closing member and adapted to receive force of motion in the insertion direction of the fueling nozzle, and a lock member that is mounted on the tank opening forming member and that selectively shifts between the locked position and the unlocked position by engaging and disengaging with the opening-closing member, and a locking mechanism that moves the locking member from the locked position to the unlocked position by being pushed by the introductory push parts.

Fuel tank opening-closing device

To obtain a fuel tank fuel filler structure with which even a fuel nozzle having a large diameter portion can be inserted easily into a fuel fill inlet and which can highly demonstrate the action of guiding the fuel nozzle to the fuel fill inlet. One end of a guide plate () is rotatably supported on a rotational shaft () disposed on a flapper valve (). The guide plate () is biased by a guide plate biasing spring toward a withdrawal region in which the guide plate withdraws from a passage region of a fuel nozzle. In a state where the flapper valve () is in an open position (HP), the entire guide plate () is positioned in the withdrawal region. In a state where the flapper valve () is in a closed position (TP), the guide plate () can be placed near a fuel fill inlet ().

Fuel tank fuel filler structure

A filling port structure for a fuel tank includes a filling port member that defines a filling port, an open/close valve that opens and closes the filling port, a rotary member that attaches the open/close valve to the filling port member in a manner such that the open/close valve is rotatable between an open position and a closed position, a locking member that is provided in the filling port member and is movable between a locking position to lock the open/close valve in the closed position and an unlocking position to unlock the open/close valve, an unlocking member that moves the locking member to the unlocking position when pressed by a fuel gun, and a retention portion that holds the locking member in the unlocking position at least when the open/close valve is in the open position.

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Nagoya, Japan

Satoshi Yamamoto