VALVE DEVICE FOR FUEL TANK

摘要

A valve device is attached to a fuel tank. The valve device includes a case including a vent valve port communicating outside of the tank at an upper portion, and including an inflow portion for a fuel below the vent valve port; and an upper floor body inside the case and rising by the fuel flowing into the case to be seated in the vent valve port. In a face portion facing a bottom portion of the upper float body in the case, an elastic piece is formed by a first arc-shaped split groove such that a center side of the face portion becomes a curvature inner side, and a second arc-shaped split groove formed such that a center of the face portion becomes a curvature inner side outside the first arc-shaped split groove. One portion of the elastic piece abuts against the bottom portion of the upper float body.

主权项

1. A valve device for a fuel tank, adapted to be attached to a fuel tank to be used, comprising:
a case including a vent valve port communicating with an outside of the fuel tank at an upper portion, and including an inflow portion for a fuel below the vent valve port; and a float body which is located inside the case and rises by a fuel flowing into the case so as to be seated in the vent valve port, wherein in a face portion facing a bottom portion of the float body in the case, an elastic piece is formed by a first arc-shaped split groove formed in such a way that a center side of the face portion becomes a curvature inner side, and a second arc-shaped split groove formed outside the first arc-shaped split groove such that a center of the face portion becomes a curvature inner side, and one portion of the elastic piece abuts against the bottom portion of the float body.