| 摘要 |
The transmission system comprises a grooved screw (4) and a rack (5), and it is characterized in that it also comprises an endless screw (6), the thread of said endless screw (6) including a number of teeth (7) meshed with said grooved screw (4) and said rack (5), so that the rotation movement of said grooved screw (4) is transmitted to the endless screw (6) through the teeth (7) of the thread and moves longitudinally said endless screw (6) by its engagement with the rack (5). It is obtained a transmission system of longitudinal dragging that is simple, quiet and reliable, because between the grooved screw and the rack only the endless screw is placed. |
