CHECK VALVE

PROBLEM TO BE SOLVED: To inhibit a valve plate from being caught on the inner peripheral surface of a fuel passage in a check valve.SOLUTION: A check valve comprises a passage forming member, and a plate-shaped valve plate for opening and closing an outflow port. The passage forming member has a mount part for mounting the valve plate, and a concavity formed to open in the end face. The valve plate has a closing part that is arranged along the end face to close the outflow port in a state of not being pressed outward by a fluid and is opened outward to open the outflow port when being pressed outward by the fluid, a mounted part mounted to the mount part, a support part that is continued to the mounted part and the closing part to support the closing part and works as a fulcrum for inclination of the posture of the closing part when the outflow port is opened, and an accommodated part that is continued to the closing part and is accommodated in the concavity when the valve plate opens the outflow port.SELECTED DRAWING: Figure 6 【課題】逆止弁において、弁プレートが燃料通路の内周面に引っかかることを抑制する。【解決手段】逆止弁は、通路形成部材と、流出口を開閉するための板状の弁プレートと、を備え、通路形成部材は、弁プレートを取り付けるための取付部と、端面に開口して形成された凹部と、を有し、弁プレートは、流体によって外方に押されていない状態において端面に沿って配置されて流出口を閉じ、流体により外方に押された場合に外方に開いて流出口を開く閉止部と、取付部に取り付けられている被取付部と、被取付部および閉止部に連なって閉止部を支持し、流出口が開かれる際に閉止部の姿勢の傾きの支点として働く支持部と、閉止部に連なり、弁プレートが流出口を開く際に凹部に収容される被収容部と、を有する。【選択図】図６