| 摘要 |
The invention relates to a mechanism for balancing the weight of an object to be swivelled about a pitch axis, especially for balancing the weight of a film or television camera mounted on a tripod head. The pitching torque produced during swivelling of the object (2) is compensated by a restoring torque, which acts with the aid of a spring arrangement (12) on the pitch axis (A) via a lever arm (11). In order to increase the pitching range and to achieve an ideal compensation of torque for all pitch angles, it is proposed according to the invention that the balancing mechanism (1) has a reduction gear (5) with a reduction ratio of 1:2 between an input shaft and an output shaft (4 and 8, respectively), the axis of the input shaft (4) being the pitch axis (A), and the spring arrangement (12) acting on the output shaft (8) via a lever arm. <IMAGE> |
