| 摘要 |
The present invention relates to an opening mechanism for a storage bed base of the type comprising a movable cover (25) and a fixed box (24), the opening mechanism comprising a pair of arms (4, 5) articulated to one another by means of a double shaft comprising a hollow shaft (11) and an inner shaft (12) which arms are in turn articulated at their free ends to a first (2) and second (7) pulley means by means of double threaded offset shafts (1, 21), third (14) and fourth pulley means (10) being connected to the first (2) and second (7) pulley means by means of first (13) and second (15) driving means respectively, the pulley means (2, 7, 14, 10) being configured such that one revolution of the first (2) and second (7) pulley means corresponds respectively to two revolutions of the third (14) and fourth (10) pulley means.
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