| 摘要 |
<p>A self-closing cap for the fuel filler neck (91) of a vehicle is provided which is particularly adapted for use with an automatic gas filling machine. The cap comprises a closure ring (3) having an annular body and screw threads or bayonet lugs for detachably mounting the periphery of the annular body around the open end of the filler neck, and a closure flap assembly (5) formed from a circular member with a nozzle receiving opening, a closure flap spring biased over the opening, and a pivotal mounting (53) connecting the flap over the opening. The closure flap assembly (5) includes a locking ratchet mechanism for securing the circular member over the closure ring in a selected angular position such that the pivotal mounting is substantially 180° opposite from the pivotal connection (95) of the restrictive flap (93) within a filler neck (94) of a vehicle to allow a fuel nozzle (100) from an automate gas filling machine to be smoothly inserted into and withdrawn from the self-closing cap. The cap has a cover that snap-fits over the closure flap assembly. The top wall of the cover serves as an inclined guide face for guiding the nozzle of an automatic gas filling machine into the opening of the closure flap assembly.</p> |
