| 摘要 |
PURPOSE:To stabilize the flow rate control characteristic by installing a shaft pressing means which applies the pressing force in the direction perpendicular to the shaft fixed on the valve body of an opening/closing valve so as to advance and retreat the valve in the axial direction and presses the shaft on the inner wall surface of a bearing by a prescribed force. CONSTITUTION:As for an air quantity control valve used for an idle revolution controller, a valve body 121 is separated from the edge part of a center shaft 105, when a solenoid assembly body 116 is conducted with electricity and a plunger 114 shifts to a core 115 side, and the negative pressure in a passage 102 passes through a hole 122, and then passes through the inside of the center shaft 105 and an orifice 132, and introduced into a chamber 123, and a valve 104 is opened through a diaphragm 110 by the pressure difference between a passage 103. In this case, a cup shape is formed from a thin metal plate, and a hole for the insertion of the center shaft 105 is formed at the center of a disc plate part 16, and a vibration suppressing member 13 which is formed by fixing a leaf spring 14 on the disc plate part 16 is fixed on the inner periphery of a valve case 101, and as prescribed pressing force is applied on the outer surface of the center shaft 105. |
