| 摘要 |
[Problem] To enable a non-return valve to be assembled in a simple manner by reducing the number of components of the non-return valve. Material costs and costs incurred in assembly work are thereby reduced. Also to ensure that a flapper of the non-return valve does not mistakenly fall off. [Solution] A non-return valve of a fuel filter tube comprising a body attached to a filler tube, and a flapper for opening and closing an opening of the filler tube by being rotatably attached to the body, in which: the body is a member obtained by integrally molding a fitting part of a rotating shaft and bearing, and an elastic member for pushing the flapper in a closing direction, the elastic member being connected at one end to the body and free at the other end; the flapper is a member provided with a lid part for opening and closing an opening of the filler tube, and a fitting part of a rotating shaft and bearing; the flapper is rotatably assembled on the body by fitting together the body-side fitting part and the flapper-side fitting part; and the elastic member pushes the flapper in the closing direction when the flapper has turned in the opening direction. |
