| 摘要 |
<p>The invention comprises two reels (1) and (2), each formed by a first trough (4) and a second trough (5) separated by an intermediate rim (6) and limited by side rims (7) which define the bases of each reel. The intermediate rims (6) have passages (13), apertures (14) or grooves (15) for placing the traction cord (8), without additional fastenings, in the reels (1) and (2) for reeling thereof.</p> |
