| 摘要 |
The screw turning handle of the operating component is in the form of a cover(8) which is connected to the screw by a connecting arrangement. The cover is adjustable between a closed position in which access to the operating component is prevented and a free position in which the screw(6) is turned by rotation of the cover. The connecting arrangement has a connecting element which is connected by one end to the screw via a first joint(11) which has a pivot axis at right angles to the longitudinal direction of the screw, and by the other end is connected to the cover by a second joint which has a pivot axis parallel to the pivot axis of the first joint. |
