| 摘要 |
The invention relates to a lifting mechanism comprising a plurality of arms forming the sides of two rhomboid polygons having a first common side (1), a first rhomboid comprising a lower side (6) parallel to the first side (1) and a second (2) and a third (3) side articulated by one end to the lower side (6) and by the other end to the first side (1), the second rhomboid comprising the first side (1) common with the first rhomboid, a strut (7) of the same length as the first side (1) and a fourth (4) and fifth (5) side parallel to one another, articulated by one end to the first side (1) and by another end to the strut (7), the mechanism comprising an element (8) articulated at one of its ends with a third point of the fourth side (4) and at its other end with a point integral with the lower side (6), this point being not collinear with the articulations (10, 11) of the second (2) and the third (3) sides with the lower side.
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