| 摘要 |
The new design of a distancing element consists mainly of two bushes (13,14) attached to each other. They have spiral-shaped surfaces (10) lifting or lowering the system when rotated. The dowel (15) is inserted through a central bore in order to join a window frame (18) to a wall (31) or to perform a similar operation. The tightening of the dowel does not affect the positioning of the frame because the distancing element absorbs the forces acting on the fixing unit. The height of the bushes can be adjusted with a spanner gripping the collar (16) attached to the bushes. |
