Patent ID: 9481239
Filing Date: 2016-11-01
CPC Classification: B60K

Claim Text:
1. A misfuelling prevention apparatus for vehicles, comprising: an upper housing; an internal housing located at a bottom of the upper housing, wherein the internal housing is movable respective to the upper housing; a housing spring disposed between the upper housing and the internal housing, wherein an upper end of the internal housing is inserted into the housing spring supported by an inner bottom of the upper housing and the internal housing is movable respective to the upper housing by the housing spring; a stopper and a stopper spring, the stopper installed at one side of the internal housing to be rotated around a pin by a contact with an oil gun; and a flapper and a flapper spring, a first end of the flapper rotatably installed by a pin at an opposite side of the internal housing with respect to the stopper and a second end of the flapper selectively caught in a recess of the stopper, wherein the flapper is to be pushed and selectively opened by the oil gun, wherein when an external force is applied to the internal housing, the internal housing is slid relative to the upper housing by the housing spring while being resiliently supported by the housing spring, wherein the housing spring has a lower resiliency than the stopper spring to move the internal housing first when the oil gun is contacted to the stopper.