| 摘要 |
<p>A movement device (10) for an element of furniture (12) for the movement of a seat (13) with respect to a fixed portion (15). The device (10) comprises a rotating shaft (16), which is integral with the seat (13), and a hollow hub (17), which is integral with the fixed portion (15). The shaft (16) is coupled in a rotatable and axially sliding manner to the hub (17), to define a first lifted position, in which the seat (13) is positioned in a free or predefined determined position with respect to the fixed portion (15). The device (10) furthermore comprises a spring (32), which is coupled to the hub (17) and to the shaft (16), to exert an elastic action of contrast on the shaft (16) and maintain it normally in the first position. The device (10) furthermore comprises a friction means (27) which is constrained to the shaft (16) and a stop element (36) which is integral with the hub (17) and is configured to contact selectively the friction means (27) and define a second position of the shaft (16), which is lowered with respect to the first position and in which the rotation of the shaft (16) is angularly countered by the friction means (27).</p> |
