| 摘要 |
<p>A spring device for a support rod (5), in particular for curtains, in which said rod comprises a first tubular element (3) and a second tubular element (4), said second tubular element (4) being arranged to be inserted into and to slide at least partially telescopically within said first element (3) such as to enable the rod length to be adjusted, said device comprising a spring (1) to be inserted into the rod (5) and arranged to exert an axial elastic force (F1, F2) which causes one tubular element of the rod to withdraw from the other, an element (2) for adjusting the spring (1) being provided comprising a body (7) having a first elongate portion (7A) presenting a spiral shaped seat (8) shaped to be able to house in its interior a plurality of turns of the spring (1), said body (7) being arranged to be at least partially housed in an end portion (4B) of said second tubular element (4), said body (7) enabling the length of that portion of the spring (1) projecting from said second tubular element (4) to be adjusted, to be then inserted into the other tubular element (3).</p> |
