| 摘要 |
<p>This multifunctional sun bed or the like is characterised by end rest surfaces (7, 8) rotatable through variable angles by stable-positioning articulated joints (11, 11B). Said articulated joints (11, 11B) can be different according to whether they are to be operated not only directly, but also indirectly by cable. Said directly operated joints are characterised by two wheels (35, 37; 36, 38) with conjugate flat toothing engaged with each other by the action of a cam (41; 45, 46) which overcomes the separating action of an opposition spring (39, 40) acting between them. Said indirectly operated joints are characterised by a toothed sector (12) bored (19) at its centre (16) to support a frame for a rotatable rest surface (7,8) having its end (7E, 8E) provided with a pair of teeth (20A, 20B) defining a cavity (21) coinciding with the cavities (15) of the toothed sector (12) during its angular travel, so that said cavity (15, 21) can receive a locking pin (22) for the two parts (7E, 12) which is mounted on a U-section (23) pivoted on said rest surface frame (7, 8) to enable required angular disengagement between the parts to be obtained with the aid of a cable (31).</p> |
