| 摘要 |
A misfueling preventing apparatus discriminates a fuel filler nozzle based on an outer diameter of the fuel filler nozzle. The misfueling preventing apparatus includes a base, a first link arm, a second link arm, a flapper and a stopper. The first link arm has a first trigger projection. The second link arm has a second trigger projection. If the fuel filler nozzle of light diesel oil pushes the first trigger projection and the second trigger projection, the first link arm and second link arm swing to a direction to which the first link arm and second link arm open to, placing the flapper in an openable state. |
| 主权项 |
1. A misfueling preventing apparatus discriminating a fuel filler nozzle based on an outer diameter of the fuel filler nozzle, the misfueling preventing apparatus comprising:
a base provided with a through hole for inserting a fuel filler nozzle, placed across an inserting direction of the fuel filler nozzle to open and close a fuel filler port or a fuel filler pipe; a first link arm swung about a pivot shaft whose position is fixed to the base, provided around the through hole of the base, having a shape bending around the through hole of the base, swinging on a plane in parallel with a plane of the through hole, biased against a direction to which the first link arm and a second link arm close, having a first trigger projection projecting to an inside of the through hole of the base; the second link arm pivotally jointed to the first link arm with a joining shaft at one end, provided around the through hole to face the first link arm, having a shape bending around the through hole of the base, swinging on the plane in parallel with the plane of the through hole, biased against the direction to which the first link arm and the second link arm close, having a stopper on another end thereof and a second trigger projection projecting to the inside of the through hole of the base; and a flapper biased against the through hole of the base, the position of said flapper being rotatably fixed to the base with a rotation shaft, and having a stopper projection; wherein a linear distance of the first trigger projection and the second trigger projection facing each other is larger than an outer diameter of a fuel filler nozzle of gasoline, the linear distance is smaller than an outer diameter of a fuel filler nozzle of light diesel oil, and wherein the stopper projection of the flapper is supported by the stopper of the second link arm to prevent the flapper from rotating to an opening position, and wherein if the fuel filler nozzle of light diesel oil pushes the first trigger projection and the second trigger projection, the first link arm and second link arm swing to a direction to which the first link arm and second link arm open to disconnect the stopper projection and the stopper. |
