| 摘要 |
A cap-free closeable neck end for a filler neck of a tank of a motor vehicle, the cap-free closeable neck including an upper entry space forming an insertion region for a fuel nozzle and being surrounded by a side wall, a lower sealing flap arranged in the upper entry space and a closing mechanism arranged above the lower sealing flap. The closing mechanism includes an upper filling opening and an upper cover, which in a closed state at least partially covers the upper filling opening and being embodied in such a manner that the upper cover is displaced by inserting an outlet pipe of a fuel nozzle into the upper entry space for releasing the upper filling opening so as to allow for the insertion of the outlet pipe through the upper filling opening and the lower sealing flap. When used for forming a protection against a filling with unsuitable fuel, the upper cover, in its closed state, is blocked by a locking element and wherein the locking element is embodied in such a manner that it is unlocked as a function of a type-specific shape of the outlet pipe of the fuel nozzle, only when the tank is filled with suitable fuel. |
| 主权项 |
1. A cap-free closeable neck for a filler neck of a tank of a motor vehicle, comprising:
a pipe section; a lower sealing flap arranged in the pipe section; a closing mechanism arranged above the lower sealing flap, wherein the closing mechanism comprises:
an upper filling opening; andan upper cover, which in a closed state at least partially covers the upper filling opening and being embodied in such a manner that the upper cover is displaced by inserting an outlet pipe of a fuel nozzle into the upper entry space for releasing the upper filling opening so as to allow for the insertion of the outlet pipe through the upper filling opening and the lower sealing flap and wherein for forming a protection against a filling with unsuitable fuel, the upper cover, in its closed state, is blocked by at least a first locking element and a second locking element and wherein the first locking element and the second locking element are embodied in such a manner that they are unlocked as a function of a type-specific shape of the outlet pine of the fuel nozzle, only when the tank is filled with suitable fuel, whereby the first locking element and the second locking element are formed by blocking devices, which are mounted in such a manner that the blocking devices are displaced by the outlet pipe for unlocking the upper cover out of a blocking position; and wherein the first locking element and the second locking element are arranged at a distance (a) to one another, wherein the distance (a) is so large that the first locking element and the second locking element are unlocked by the outlet pipe of the fuel nozzle comprising a first diameter, in particular a fuel nozzle for diesel fuel, while at most the first locking element is unlocked by a second fuel nozzle comprising a second diameter, which is smaller relative to the first diameter, and wherein each of the first locking element and the second locking element comprises a locking pin that engages with a recess in the upper cover in a positive manner and which is displaced laterally or downward against a force of a safety spring through a free end of the outlet pipe, wherein, upon completion of displacement of the locking pin, engagement of the locking pin with the recess of the upper cover is overridden.
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