| 摘要 |
The play-free tensioned attachment is achieved by virtue of the fact that at the end of the lower-side of the ballrod a tensioning-part is pushed radially outwards with respect to axis of the ballrod by a wedge-shaped slide-head of a sliding-part which can be displaced along its axis. The tensioning-part pushes against the internal surface at the lower-side of the rectangular cross-sectioned closed attachment-housing, thereby pushing the ballrod upwards until an inclined surface situated on the upper rear-surface of the ballrod interacts with a corresponding inclined surface situated at the rear-end upper-side of the housing. The inclination of the previously mentioned contact-surfaces is such that the ballrod is pulled rearwards, causing the first-mentioned two contact-surfaces on the ballrod to be tensioned against the corresponding contact surfaces which are located on the front-end of the housing.
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