CONTROL VALVE

To provide a control valve capable of suppressing the occurrence of crack in a housing during press fitting of a cylindrical part into a shaft penetration hole.SOLUTION: The control valve includes: a synthetic resin first housing 11 having a shaft penetration hole 26 into which a drive shaft 2 is inserted; an a seal member 20 arranged among a middle diameter part 29 of the shaft penetration hole, the inner peripheral face of a large diameter part 30, and the outer peripheral face of the drive shaft. The shaft penetration hole has a non-circular part 29a of which the cross section in a direction at right angles to a center axis Z of the shaft penetration hole is non-circular, on the inner peripheral face of the middle diameter part 29, while the seal member has a ferrous metal cylindrical part 33 pressed and fixed into the non-circular part of the shaft penetration part and a seal part 34 provided on the inner periphery of the cylindrical part for sliding on the drive shaft. Between a boundary part inner peripheral face between the middle diameter part and the large diameter part and the outer peripheral face of the cylindrical part, seal agent 35 using latex as main material is filled.SELECTED DRAWING: Figure 4 【課題】軸貫通孔に対する筒状部の圧入時などにおけるハウジングの亀裂などの発生を抑制することができる制御弁を提供する。【解決手段】駆動軸２が挿入される軸貫通孔２６を有する合成樹脂製の第１ハウジング１１と、軸貫通孔の中径部２９と大径部３０の内周面と駆動軸の外周面との間に配置されたシール部材２０と、を備え、軸貫通孔は、中径部２９の内周面に軸貫通孔の中心軸線Ｚに対して直角方向の断面が非円形である非円形部２９ａを有する一方、シール部材は、軸貫通孔の非円形部に圧入固定される鉄系金属材の筒状部３３と、筒状部の内周に設けられて、駆動軸に摺動するシール部３４と、を有し、前記中径部と大径部との間の境界部内周面と筒状部の外周面との間に、ラテックスを主原料としたシール剤３５が充填されている。【選択図】図４