| 摘要 |
1. A device for converting a rotational movement into a translational one and vice versa having a rotary member (3) which is guided for rotation about a spindle (5) and which is wrapped round, at least partially, by an open belt (1) of steel or a similar springy material which is guided in the wrap-round region (9), is made preshaped curved in cross-section and, on running into the wrap-round region of the substantially circular cylindrical belt contact surface (2) of the rotary member (3) is deformed out of the curved into a flat cross-sectional course and, on leaving the belt contact surface (2) is deformed back into the curved cross-sectional course without permanent deformation, characterised in that one end (11) of the belt (1) is connected to a carriage (12) which is mounted for longitudinal displacement on a guide member (6) for connection, in a manner transmitting tensile and compressive forces, to an object or a drive, particularly a door or a gate leaf, and that the belt is held for longitudinal displacement in a guide (7) of the guide member (6) in a manner transmitting tensile and compressive forces, over the whole longitudinal displacement distance between the rotary member (3) and the carriage (12). |
