| 摘要 |
The length-adjustable tool shaft (1) comprises mutually axially extendable shaft parts (2,3), whose resistance against extension movement is selectively activatable by at least one radially movable friction component (4) between them. The friction component is located between and in its radial movement controlled by mutually axially movable transmission bodies (6,7). At least one of the transmission bodies is provided with an inclined surface (8,9) converting its axial movement to radial movement in the friction component. |
