| 摘要 |
The intermediate part (7) consists of an upper (8) and a lower part (9) which are connected to each other by a device (10) so that they are angularly adjustable. This device is a cardan joint which can adopt a first position in which the upper and lower parts are respectively arranged along the longitudinal axis and a second position where the parts can be adjusted at an angle to one another. The upper part is fixed to or integrated with the fixture unit and the lower part can be fixed to the operating rod (3). The cardan joint in the first position is inserted in a recess (12) in the lower part and in the angularly adjusted position is withdrawn from the recess. A sprung elastic pipe muff (13) connects the upper and lower parts in the intermediate part. |
