Patent ID: 8469907
Filing Date: 2013-06-25
Classification: A61H,B25J,F16C,Y10T

Abstract:
1. A slider movable in a sliding direction, which is a direction along a hollow arc-shaped rail, which has an arc-shaped inner peripheral wall and outer peripheral wall, a pair of side walls coupling the inner peripheral wall to the outer peripheral wall at side edges thereof, and a slit formed along a longitudinal direction in the central portion of the inner peripheral wall or the outer peripheral wall so as to provide a pair of divided peripheral wall portions separated in a width direction by the slit, the width direction being transverse to the longitudinal direction, the arc-shaped rail being shaped by bending a metal plate member, the slider comprising: an insertion portion inserted into the arc-shaped rail through the slit; a pair of first rotating bodies, which are provided in the insertion portion and in rollable contact with the divided peripheral wall portions; and a second rotating body, which is provided in the insertion portion and in rollable contact with the peripheral wall facing the peripheral wall in which the slit is formed, wherein the second rotating body includes a pair of lateral rotating bodies, which are disposed at opposite ends in the width direction of the peripheral wall facing the peripheral wall in which the slit is formed, and a central rotating body disposed in a central portion in the width direction, wherein the insertion portion includes a pivot member, on which the lateral rotating bodies and the central rotating body are disposed so as to be displaced from each other in the sliding direction and which rotatably supports the lateral rotating bodies and the central rotating body, and wherein the pivot member is pivotally supported in the insertion portion so as to be swingable in the sliding direction.