JPS6293479U

JPS6293479U -

Info

Publication number: JPS6293479U
Application number: JP18693385U
Authority: JP
Priority date: 1985-12-03
Filing date: 1985-12-03
Publication date: 1987-06-15

Description

[Brief explanation of the drawing]

第１図は、従来の電動弁の閉弁状態を示す縦断
面図、第２図は、第１図の電動弁の開弁状態を示
す縦断面図、第３図は、従来の停止用ねじ部を示
す斜視図、第４図は、本考案の一実施例の停止用
ねじ部の縦断面図。１は弁軸、２は弁座、３は針状弁、４はおねじ
、５はモータの回転子、６は弁本体、７はめねじ
、８は推進軸受、９はケース、１０はモータの固
定子コイル、１１，１２は出入口、１３は蓋、１
４は推進ねじ、１５はストツパーボルト、１６は
ストツパーナツト、１６ａはストツパーナツトの
外周孔、１７は停止用ねじ、１８はロータスリー
ブ、１９はピン、２０は当て板、２１は潤滑剤。 Fig. 1 is a vertical cross-sectional view showing the conventional motor-operated valve in the closed state, Fig. 2 is a longitudinal cross-sectional view showing the motor-operated valve in Fig. 1 in the open state, and Fig. 3 is a conventional stop screw. FIG. 4 is a longitudinal cross-sectional view of the stop screw portion according to an embodiment of the present invention. 1 is the valve stem, 2 is the valve seat, 3 is the needle valve, 4 is the male thread, 5 is the motor rotor, 6 is the valve body, 7 is the female thread, 8 is the propulsion bearing, 9 is the case, 10 is the fixation of the motor Child coil, 11 and 12 are entrances and exits, 13 is lid, 1
4 is a propulsion screw, 15 is a stopper bolt, 16 is a stopper nut, 16a is an outer peripheral hole of the stopper nut, 17 is a stop screw, 18 is a rotor sleeve, 19 is a pin, 20 is a backing plate, and 21 is a lubricant.

Claims

[Scope of utility model registration request]

By energizing the stator coil 10 of the motor fixed to the outer periphery of the case 9 made of non-magnetic material, the rotor 5 of the motor, which is integrally formed with the valve shaft 1 having the male thread 4 housed inside the case 9, is activated. This rotation is applied to the valve shaft 1 by a propulsion bearing 8 with a female thread 7.
This is an electric valve that controls the opening degree of the valve seat 2 by converting it into a linear motion.
A stopper bolt 15 is fixed, and a stopper nut 16 having a through hole 16a is screwed into the stopper bolt 15, and a backing plate 20 is attached to the tip of the stopper nut 16.
In the electric valve structure, the pin 19 fixed to the rotary sleeve 18 integrated with the rotor 5 of the motor is inserted into the through hole 16a of the stopper nut.
5 or a stopper structure for an electric valve, characterized in that the threaded portion of the stopper nut 16 or the threaded portions of the stopper bolt 15 and the stopper nut 16 are baked and coated with a fluorine-based lubricant or the like.