JPH0484979U

JPH0484979U -

Info

Publication number: JPH0484979U
Application number: JP12942890U
Authority: JP
Priority date: 1990-11-30
Filing date: 1990-11-30
Publication date: 1992-07-23

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例にかかる空気流量
制御弁を示す要部断面図、第２図は、同実施例に
おいて弁座開口部が閉鎖された状態を示す要部断
面図、第３図は、従来例を示す一部断面図である
。１……空気流量制御弁（ステツプモータ式流量
制御弁）、２……ステツプモータ、３……ボデイ
、７……シート部材（弁座）、８……弁座開口部
、９……シヤフト（ロータ）、１０……ストツパ
ーピン（規制部材）、１１……ナツト（駆動部材
）、１２……切欠部（当接部）、１３……フラン
ジ、１４……弁体、１６……シート面、９……波
ワツシヤ（緩衝部材）。 FIG. 1 is a cross-sectional view of the main parts of an air flow control valve according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of the main parts of the same embodiment with the valve seat opening closed; FIG. 3 is a partial sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Air flow control valve (step motor type flow control valve), 2... Step motor, 3... Body, 7... Seat member (valve seat), 8... Valve seat opening, 9... Shaft ( rotor), 10... stopper pin (regulating member), 11... nut (driving member), 12... notch (contact part), 13... flange, 14... valve body, 16... seat surface, 9 ... Wave washers (buffer material).

Claims

[Claims for Utility Model Registration] (1) A step motor having a stator and a rotor, and a drive member screwed to the rotor,
As the rotor rotates, the driving member moves between a fully open position and a fully closed position, opens and closes a valve seat opening in the body, and controls the flow rate of fluid according to the degree of opening of the valve seat opening. The step motor type flow control valve is a step motor type flow control valve in which contact portions are provided at both ends of the driving member in a fully open direction and a fully closed direction where the driving member engages with the rotor. , wherein the rotor is provided with a regulating member that comes into contact with the contact portion and regulates a fully open position and a fully closed position of the drive member, wherein the body is configured to allow the drive member to freely slide together with the rotor. A flange and a valve seat are provided to sandwich the valve seat, and the driving member supports a valve element that increases or decreases the opening degree of the valve seat opening as the driving member moves. When the member is regulated to the fully closed position by the regulating member, a seat surface is formed that contacts the valve seat and closes the valve seat opening, and a seat surface is formed between the valve body and the drive member. . A step motor type flow control valve, characterized in that a buffer member is provided for biasing the valve body toward the valve seat. (2) The step motor type flow control valve according to claim 1, wherein the valve body holds the drive member and the rotor and is fitted onto the flange.