| 摘要 |
An adjustable support mechanism for a keyboard or the like comprises a platform 90 on which the keyboard can be mounted and a supporting frame 10 adapted to be connected to the underside of a table or desk. The platform 90 is connected to the frame 10 by upper and lower arms 40 and 60 forming a parallel linkage so that the platform can be raised and lowered without changing its orientation. The arm 40 can be clamped to the body by a clamping screw operated by a handle 59 to fix the platform in position after its height has been adjusted. The length of the lower arm 60 can be adjusted to enable the platform 90 to be levelled. The frame 10 consists of two parallel rails 12, and the arms 40 and 60 are mounted on a carriage 21 movable along the rails so that the platform 90 can be moved horizontally towards and away from the table or desk. The arms are also pivotable about a vertical axis. <IMAGE> |
