Opening-closing apparatus for fuel tank
An opening-closing apparatus for a fuel tank comprises a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank; an insertion-side opening-closing mechanism configured to open and close the fuel passage; a tank-side opening-closing mechanism located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage; a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism to the outside of the opening-closing apparatus; and an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside. This configuration of the opening-closing apparatus for the fuel tank reduces dust and the like invaded from the outside into the fuel passage which a liquid fuel passes through.
1. An opening-closing apparatus for a fuel tank, comprising:
a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank;
an insertion-side opening-closing mechanism fixed to the fuel passage-forming portion and configured to open and close a filler port of the fuel passage;
a tank-side opening-closing mechanism fixed to the fuel passage-forming portion, located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage;
a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism with outside of the opening-closing apparatus; and
an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside of the opening-closing apparatus, wherein
the liquid discharge path has a liquid reservoir in which a liquid is temporarily accumulated when the open-close valve is closed,
the open-close valve is configured such that mass of the liquid accumulated in the liquid reservoir is utilized as a force of opening the open-close valve,
the open-close valve is formed as part of a plate member, and
the open-close valve has a support end that is a grooved portion formed in the plate member to be thinner than a remaining part of the open-close valve.
2. The opening-closing apparatus for the fuel tank according to claim 1 ,
wherein the open-close valve is further configured such that mass of the open-close valve is further utilized as a force of closing the open-close valve.
3. The opening-closing apparatus for the fuel tank according to claim 2 , further comprising:
a magnetic element that has a portion opposed to the open-close valve and at least partly magnetized and that is fixed in position relative to the liquid discharge path, wherein
the open-close valve is made of a magnetic material such that a portion of the open-close valve opposed to the magnetic element is in close contact with the magnetic element.
4. The opening-closing apparatus for the fuel tank according to claim 3 , further comprising:
an elastic member configured to apply a force of closing the open-close valve.
5. The opening-closing apparatus for the fuel tank according to claim 4 , further comprising:
an open-close valve stopper configured to restrict an opening of the open-close valve.
6. An opening-closing apparatus for a fuel tank, comprising:
a fuel passage-forming portion configured to form a fuel passage that is arranged to introduce a supplied liquid fuel to the fuel tank;
an insertion-side opening-closing mechanism fixed to the fuel passage-forming portion and configured to open and close a filler port of the fuel passage;
a tank-side opening-closing mechanism fixed to the fuel passage-forming portion, located on a fuel tank side of the insertion-side opening-closing mechanism and configured to open and close the fuel passage;
a liquid discharge path configured to allow for communication of a portion of the fuel passage between the insertion-side opening-closing mechanism and the tank-side opening-closing mechanism with outside of the opening-closing apparatus; and
an open-close valve configured to open and close the liquid discharge path and to be opened toward the outside of the opening-closing apparatus, wherein
the liquid discharge path has a liquid reservoir in which a liquid is temporarily accumulated when the open-close valve is closed,
the open-close valve is configured such that mass of the liquid accumulated in the liquid reservoir is utilized as a force of opening the open-close valve, and
the open-close valve is formed from a plate member, has a shaft as a support end in an upper portion of the open-close valve and is rotated about the shaft.
7. The opening-closing apparatus for the fuel tank according to claim 6 ,
wherein the open-close valve is configured such that mass of the open-close valve is utilized as a force of closing the open-close valve.
8. The opening-closing apparatus for the fuel tank according to claim 7 , further comprising:
a magnetic element that has a portion opposed to the open-close valve and at least partly magnetized and that is fixed in position relative to the liquid discharge path, wherein
the open-close valve is made of a magnetic material such that a portion of the open-close valve opposed to the magnetic element is in close contact with the magnetic element.
9. The opening-closing apparatus for the fuel tank according to claim 8 , further comprising:
an open-close valve stopper configured to restrict an opening of the open-close valve.
10. The opening-closing apparatus for the fuel tank according to claim 7 , further comprising:
an elastic member configured to apply a force of closing the open-close valve.
11. The opening-closing apparatus for the fuel tank according to claim 10 , further comprising:
an open-close valve stopper configured to restrict an opening of the open-close valve.