| 摘要 |
<p>The present invention provides a movement device, in which a clearance between a contact body and a support rail is automatically eliminated, without an increase in preload and even with abrasion of the contact body and the support rail, so as to eliminate play of the movement device. The movement device comprises: a support rail 2; a moving body 4 being guided by the support rail 2 and moved relative to the support rail 2; contact bodies 5, 6 and 7 being provided to the moving body 4 and individually in contact with the support rail 2 from different directions; and preload means 8 for always pressing at least one of the contact bodies 5, 6 and 7 onto the support rail 2 with a prescribed force, the preload means 8 presses the contact body 7 of the contact bodies 5, 6 and 7, which contacts the support rail 2 from a direction substantially opposite to a direction of a load applied to the support rail 2 via the moving body 4, onto the support rail, and the preload means has one-way check means for prohibiting the contact body 4 to move away from the support rail 2.</p> |
