| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric linear actuator satisfied with performances practically requested, avoiding excessive specification. <P>SOLUTION: The electric linear actuator rotates a threaded rod 2 with a small DC motor 1, and straightly moves a nut 4 screwed to the threaded rod 2. An output shaft of the motor 1 and an input end of the threaded rod 2 are coupled to each other by a coupling 3, and a magnet 6 is built in the coupling 3. The coupling 3, in which a lead switch 7 is disposed along the outer periphery of the coupling, is formed with a conic hole as a supporting recessed part 3a in a threaded rod side end surface thereof. The threaded rod is formed with a conic projection part as a supporting projection part 2a in a coupling side end surface thereof, and is formed with a conic hole as a receiver recessed part 2c in the other end surface thereof. A pole plunger 9 to be pushed to the receiver recessed part 2c by energizing is fitted to an actuator frame. <P>COPYRIGHT: (C)2013,JPO&INPIT |
