| 摘要 |
A rotary drive for a belt retractor has a case (10) which contains a cylindrical chamber (18) in which a generally disk-shaped rotor (14) is eccentrically mounted with lamellas (26) received in radial slots (24), and a compressed gas source for applying a pressure in the chambers located between the lamellas, the rotor and the wall of the case. The chambers are sealed from each other and from the case (10, 12) by a sealing system (30) mounted on the rotor (14). The rotor (14) is mounted so as to rotate in the case (10, 12) in relation to a shaft (16) and carries at least one swivelling coupling pawl (32) which may be positioned between coupling teeth (34) at the circumference of the shaft (16). |
