| 摘要 |
Support device for a liquid crystal flat screen ( 12 ), in particular for computer workstations, of the type including an arm ( 14 ) and an articulating mechanism ( 18 ) interposed between the arm and the screen. The articulating mechanism ( 18 ) includes a ball ( 36 ) having a general hemispherical shape ( 38 ) and adapted to be fixed to the screen ( 12 ), a cage ( 46 ) defining a housing ( 48 ) for receiving the ball and having an annular edge ( 50 ) which makes frictional contact with the ball, a tie rod ( 64 ) interposed between the cage ( 46 ) and the ball ( 36 ), while resting substantially at the center (C) of the ball, to exert an elastic restoring force of a selected value which causes the ball to rest against the annular edge of the cage, and a tie rod passage ( 74 ) formed of a widened recess produced in the ball ( 36 ) and opening on the hemispherical surface ( 38 ) of the ball to allow clearance of the tie rod in the ball, whatever the position of the ball with respect to the cage. |
