JPS6439991U

JPS6439991U -

Info

Publication number: JPS6439991U
Application number: JP13606787U
Authority: JP
Priority date: 1987-09-04
Filing date: 1987-09-04
Publication date: 1989-03-09

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例に係るモータ駆動
バルブの限界位置設定装置の説明図、第２図はバ
ルブの取り付け状態を示す断面図、第３図は制御
系統図、第４図は本考案の第２実施例に係るモー
タ駆動バルブの限界位置設定装置の要部説明図、
第５図は従来におけるモータ駆動バルブの限界位
置設定装置の説明図である。１……サーボモータ、２……シヤフト、３……
バルブ、４……ウオームギア機構、５……ウオー
ム、６……ウオームホイール、６Ａ……ウオーム
ホイール用シヤフト、８……回転板、８Ａ……切
り欠き、９……上限位置検出マイクロスイツチ、
１０……下限位置検出マイクロスイツチ。 Fig. 1 is an explanatory diagram of a limit position setting device for a motor-driven valve according to the first embodiment of the present invention, Fig. 2 is a sectional view showing the valve installation state, Fig. 3 is a control system diagram, and Fig. 4 is An explanatory diagram of the main parts of a limit position setting device for a motor-driven valve according to a second embodiment of the present invention,
FIG. 5 is an explanatory diagram of a conventional limit position setting device for a motor-driven valve. 1... Servo motor, 2... Shaft, 3...
Valve, 4... Worm gear mechanism, 5... Worm, 6... Worm wheel, 6A... Worm wheel shaft, 8... Rotating plate, 8A... Notch, 9... Upper limit position detection micro switch,
10...Lower limit position detection micro switch.

Claims

[Claims for Utility Model Registration] (1) A motor, a shaft that is attached to the motor and moves linearly in the axial direction due to its rotation, and a valve that is attached to the tip of the shaft, and the valve moves linearly to fully close the shaft. Or, in a limit position setting device for a motor-driven valve, which detects the fully open state with a detection sensor and stops or reverses the motor to stop the valve or move the valve linearly in the opposite direction to the operating direction. A limit position setting for a motor-driven valve, characterized in that a worm gear mechanism having a worm and a worm wheel located coaxially with the shaft is provided, and a detected part to be detected by a detection sensor is provided on the worm wheel side. Device. (2) The motor-driven valve according to claim 1, wherein the detection sensor is a micro switch, and the detected part is a notch formed in a rotary plate provided on a worm wheel shaft. limit position setting device. (3) The limit position of a motor-driven valve according to claim 1 of the utility model registration claim, wherein the detection sensor is a rotation angle differential transformer, and the detected part is a rotor provided on a worm wheel shaft. Setting device.