| 摘要 |
Articulation for mechanisms (20, 21) of sofa- or chair-beds, which comprises a first rotatable member (1) pivoted to a second rotatable member (2) for rotating around a rotation axis (A), wherein the first rotatable member (1) and the second rotatable member (2) comprise a first plate (7) and a second plate (12), respectively, substantially perpendicular to the rotation axis (A), wherein the first plate (7) is provided with at least two first radial protrusions (8, 9) which define at least one first lowered sector (10) covering a first angle (a1) and the second plate (12) is provided with at least two second radial protrusions (13, 14) which define at least one second lowered sector (15) covering a second angle (a2), the two first radial protrusions (8, 9) being arranged between the two second radial protrusions (13, 14), or vice versa, so that the rotation of the first rotatable member (1) with respect to the second rotatable member (2) is limited by the contact of a first radial protrusion (8, 9) with a second radial protrusion (13, 14). The present invention also relates to a mechanism for sofa- or chair-beds comprising such articulation.
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