JPS6324467U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例に係る逆止弁の縦断面
図、第２図は弁体２６の平面図、第３図は第２図
―線断面図である。 １０……弁ケーシング、１２……流入口、１４
……流出口、２４……弁座部材、２６……弁体。 FIG. 1 is a longitudinal cross-sectional view of a check valve according to an embodiment of the present invention, FIG. 2 is a plan view of a valve body 26, and FIG. 3 is a cross-sectional view taken along the line taken along the line shown in FIG. 2. 10...Valve casing, 12...Inflow port, 14
...outlet, 24...valve seat member, 26...valve body.

Claims (1)

【実用新案登録請求の範囲】 一端側に流入口を有し他端側に流出口を有する
筒状の弁ケーシングと、該弁ケーシング内にケー
シングの軸線方向へ進退可能に挿設された、その
外周面が弁ケーシング内周面に密着可能な径を有
する可撓性ゴム製の弁体と、該弁ケーシングの排
出口側に設けられた弁座部材と、を有し、 前記弁体は、その外周部分に、弁ケーシング流
出口側へ向つて拡径する形状の可撓部が形成され
ると共に、その流出口側の面の中央には円錐状突
部が形成されており、 前記弁座部材は、該弁体の円錐状突部が着座す
るコーン状シート部及び、該シート部の周囲に設
けられた弁座部材の上流側と下流側とを連通する
通水部を備えていることを特徴とする逆止弁。[Claims for Utility Model Registration] A cylindrical valve casing having an inlet at one end and an outlet at the other end; The valve body includes a flexible rubber valve body whose outer circumferential surface has a diameter that allows it to come into close contact with the inner circumferential surface of a valve casing, and a valve seat member provided on the discharge port side of the valve casing. A flexible portion having a diameter increasing toward the outlet side of the valve casing is formed on the outer peripheral portion thereof, and a conical protrusion is formed in the center of the surface on the outlet side, and the valve seat The member includes a cone-shaped seat portion on which the conical protrusion of the valve body is seated, and a water passage portion provided around the seat portion that communicates the upstream side and the downstream side of the valve seat member. A check valve featuring: