JPH0295405U

JPH0295405U -

Info

Publication number: JPH0295405U
Application number: JP259889U
Authority: JP
Priority date: 1989-01-12
Filing date: 1989-01-12
Publication date: 1990-07-30

Description

[Brief explanation of drawings]

第１図は一実施例の正面部分断面図、第２図は
その実施例のラツクと滑車の斜視図、第３図はそ
の実施例の平面断面図、第４図はその実施例のモ
ータアクチユエータと被駆動物との連結部の斜視
図、第５図はその実施例の被作動物（止水弁）の
略示断面図、第６図はその実施例の制御回路図、
第７図は駆動モータの出力トルク特性を示す線図
、第８図は他の実施例の制御回路図である。１……モータアクチユエータ、２……ハウジン
グ、３……駆動モータ、５……ラツク、７……ラ
ツク駆動歯車、８……溝、１１……大歯車、１２
……軸、１３……導電ブラシ、１４……プリント
基板、１５……導電パターン、１８……抵抗器、
２５……導電パターン、２８……抵抗器、３０…
…止水弁、３１……ロツド、３２……止水弁のハ
ウジング、３３……平板、３４……弁体、３５…
…弁座。 Fig. 1 is a front partial sectional view of one embodiment, Fig. 2 is a perspective view of the rack and pulley of the embodiment, Fig. 3 is a plan sectional view of the embodiment, and Fig. 4 is a motor actuator of the embodiment. FIG. 5 is a schematic sectional view of the operated object (water stop valve) of the embodiment; FIG. 6 is a control circuit diagram of the embodiment;
FIG. 7 is a diagram showing the output torque characteristics of the drive motor, and FIG. 8 is a control circuit diagram of another embodiment. DESCRIPTION OF SYMBOLS 1... Motor actuator, 2... Housing, 3... Drive motor, 5... Rack, 7... Rack drive gear, 8... Groove, 11... Large gear, 12
... shaft, 13 ... conductive brush, 14 ... printed circuit board, 15 ... conductive pattern, 18 ... resistor,
25... Conductive pattern, 28... Resistor, 30...
... Water stop valve, 31 ... Rod, 32 ... Water stop valve housing, 33 ... Flat plate, 34 ... Valve body, 35 ...
…valve seat.

Claims

[Claims for Utility Model Registration] A motor actuator having a rack connected to a driven object, and a rack drive gear that meshes with the rack and is rotationally driven by a motor to linearly move the rack back and forth, A conductive brush is provided on a rotating surface that rotates together with the rack drive gear, a conductive pattern that contacts the conductive brush is provided on a stationary surface that is disposed opposite to the rotating surface, and the conductive pattern and the conductive brush are connected to each other. A reciprocating linear motor actuator characterized in that the linear movement position of the rack is detected by detecting the rotational position of the rack drive gear from the contact state.