| 摘要 |
<p>In a feed screw mechanism in which an internally threaded member 96 fixed within an output rod 33 is threadedly engaged with an externally threaded member 95 connected at axially one end in the direction of axis L thereof to a drive source, so that the output rod 33 is moved in a direction of an axis L relative to the externally threaded member 95 by the relative rotation of the externally threaded member 95 and the internally threaded member 96, the internally threaded member 96 is coupled to the output rod 33 at the axially other end in the direction of the axis L by a threadedly coupling portion 97. Therefore, when pulling loads in directions away from each other are applied to the output rod 33 and the externally threaded member 95, a compression load can be prevented from being applied from the output rod 33 to the internally threaded member 96. Thus, pulling loads can be applied to both of the externally threaded member 95 and the internally threaded member 96, and a load uniform in the direction of the axis L can be transmitted to tooth flanks of both the threaded members 95 and 96, thereby ensuring the durability and the smooth operation.</p> |
