JPH0458070U

JPH0458070U -

Info

Publication number: JPH0458070U
Application number: JP9911190U
Authority: JP
Priority date: 1990-09-21
Filing date: 1990-09-21
Publication date: 1992-05-19

Description

[Brief explanation of drawings]

第１図は、実施例の正面断面図、第２図は、モ
ータの回転を制御するための電気回路の概略図、
第３図は、実施例のモータアクチユエータの利用
例を示す概略図である。１……ハウジング、２……モータ、３……減速
歯車群、４……出力軸、１３……被駆動体、１５
……第一のストツパ、１６……第二のストツパ、
２３……第一のスイツチ部、２３ａ……第一の正
特性サーミスタ、２３ｂ……第一の整流素子、２
４……第二のスイツチ部、２４ａ……第二の正特
性サーミスタ、２４ｂ……第二の整流素子。 FIG. 1 is a front sectional view of the embodiment, FIG. 2 is a schematic diagram of an electric circuit for controlling the rotation of the motor,
FIG. 3 is a schematic diagram showing an example of use of the motor actuator of the embodiment. DESCRIPTION OF SYMBOLS 1... Housing, 2... Motor, 3... Reduction gear group, 4... Output shaft, 13... Driven body, 15
...first stoppa, 16...second stoppa,
23...first switch section, 23a...first positive temperature coefficient thermistor, 23b...first rectifying element, 2
4...Second switch section, 24a...Second positive temperature coefficient thermistor, 24b...Second rectifying element.

Claims

[Claims for Utility Model Registration] A driven body is reciprocated by the rotation of a motor, and the driven body collides with a stopper at at least one of the stopping positions at both ends of the reciprocating movement. In the motor actuator, the movement of the driven body is stopped by stopping the movement of the driven body. The first switch part consists of a positive temperature coefficient thermistor connected in series with a first rectifying element, and the second positive coefficient thermistor which turns off when the temperature rises when a current above a certain level flows through the first rectifying element. A motor actuator characterized in that the element and a second switch part formed by connecting a second rectifying element in series in the opposite direction are connected in parallel.