| 摘要 |
<p>A motion device (10) which is provided with an extending track body (1), a moving body (2) relatively movable in a direction in which the track body (1) extends, and a plurality of rolling bodies (13) held by the moving body (2) to be used for the relative movement. The motion device (10) is characterized in that the moving body (2) comprises an inner casing member (16) provided with a convex spherical part (21) swelling toward a side opposite to the side of the track body (1) and an outer casing member (8) disposed on the side of the outer surface of the inner casing member (16) and provided with a concave spherical part (26) concaved corresponding to the convex spherical part (21), and in that a spherical bearing mechanism provided with the inner casing member (16) and the outer casing member (8) is formed.</p> |
