| 摘要 |
<p>PURPOSE:To steplessly adjust the inclined angle and height of a position to be set by generating frictional force corresponding to rotational moment based upon the load of a moving element depressed by a spring and an arm rotated by a cam and rotating a receiving member in accordance with the rotation of the arm. CONSTITUTION:When a mounting board 13 mounting a word processor or the like is manually lifted, the arm 1 pivoted around a shaft 2 is rotated, frictional force based on the spring 7 of the moving element 5 fitted to the arm 1 so as to be optionally moved in its radius direction and the cam 6 is changed in accordance with the change of rotational moment due to the load of the arm 1, the arm 1 is stopped in a balanced state, and the height of the receiving member 9 is steplessly adjusted. On the other hand, the rotation of the shaft 2 is transmitted to a shaft 10 through a belt 22 and the member 9 is turned to a horizontal state. Since a braking means 16 is stopped by frictional force generated between the means 16 and a movable shaft 11 through a spring 18, the inclined angle of the member 9 can be also steplessly adjusted.</p> |
