| 摘要 |
<p>Automatic rotation system for tilting seats of chairs or armchairs, wherein the fastening of the seat is by means of holders formed by two parts (1 and 2) which are coupled with relative rotation between same, and incorporate a helicoidal spring (5) which is hooked by its ends in traction assembly and exercises a relative rotation action between said parts (1 and 2), in an arrangement of said spring on a structure (6) in form of an annular drum, on which it has a clamping effect with a braking action on the rotation of the two parts (1 and 2).</p> |
