| 摘要 |
An elevation mechanism of a tripod in which a vertical column having a universal head fixed at its upper end is elevationally journalled within a thrust bearing hole bored within a metal fitting base by means of a lifting mechanism of the rack and pinion type and within which is journalled one end portion of three standard legs of a tipod which are equally disposed about the periphery thereof and which are pivotable with respect thereto the improved elevation mechanism of the tripod in which the vertical column comprises an aluminum tubing, and a rack member molded as a separate member with respect to the column from a suitable synthetic resin and which is formed with a rack gear is integrated within one side of the vertical column along the axial direction thereof, while a pinion gear is rotatably supported within the metal fitting base so as to be meshed with the rack gear. |
