| 摘要 |
The device concerns a chair (10), which includes an at least partly resilient seat part (12). The seat part (12) of the chair is provided with support elements (14, 15) placed at both sides of the imaginary longitudinal and vertical centre plane (A) of the seat part, which elements are fitted to produce a force and movement that raises the seat part (12) variably and alternatingly. Favourably, the support elements (14, 15) are interconnected so that, when a substantially vertical load is applied to one support element (14/15), said load produces an increasing support force of a direction opposite to said load in the other support element (15/14). Preferably, the support elements consist of interconnected resilient elements (14, 15) so that, when external, substantially vertical loads of different magnitudes are applied to said resilient elements (14, 15), the resilient element (14/15) that is subjected to a higher load produces a force and movement of opposite direction in the other resilient element (15/14).
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