Valve device for fuel tank
AssigneeNifco Inc.
InventorsXiaohui Sui, Tsuyoshi Kato
Life of this patent
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Abstract
In a valve device for a fuel tank, a fuel liquid level of filling-up fuel feed and an allowable fuel amount of additional fuel feed can be easily and appropriately changed by replacing only a part of components forming the valve device. A first valve chamber has a structure of positioning an open end below a support portion of a first float having a passage portion for a fluid. A second valve chamber includes a support portion of a second float having a passage portion for the fluid. The first valve chamber and the second valve chamber are formed by fitting a lower-portion including the support portion and the open end of the first float and the support portion of the second float relative to an upper-portion including a first valve opening and a second valve opening.
Claims5
A valve device for a fuel tank, comprising:
- an upper-portion including a first valve opening and a second valve opening for communicating inside and outside of a fuel tank;
- a lower-portion assembled with the upper-portion, and including a first valve chamber formed below the first valve opening, a second valve chamber formed below the second valve opening and partitioned from the first valve chamber, a partition wall separating the first valve chamber and the second valve chamber, a first support portion having a passage portion for a fluid so that the first valve chamber has an open end below the first support portion, and a second support portion having another passage portion for a fluid;
- a first float disposed inside the first valve chamber and supported on the first support portion to be movable up and down;
- and
- a second float disposed inside the second valve chamber and supported on the second support portion to be movable up and down,
- wherein the first valve chamber and the second valve chamber are assembled by fitting the lower-portion including the first support portion for the first valve and the second support portion for the second float to the upper-portion, and
- the upper-portion forming the first valve chamber includes a fitted portion having an oval shape in a horizontal cross section, and the lower-portion fitting into the fitted portion has a fitting portion in a horizontal cross section substantially matching with the oval shape of the fitted portion when the upper-portion and the lower-portion fit together.
Dependencies are inferred from the claim text.