| 摘要 |
A chair comprising a supporting structure (12) having a seat (14) and a backrest (16), in which the backrest (16) comprises:- a deformable resting portion made of plastic material (28), which has a non-planar resting surface provided with at least one weakened area (32), which enables an elastic deformation of the resting portion (28) so that the resting portion assumes a configuration bent backwards under the action of a thrust applied backwards by the user,- two uprights (30) formed integrally on the lateral sides of the resting portion (28), and- two side connection elements (36), which connect the backrest (16) to the supporting structure (12), formed integrally at the bottom ends of the uprights (30). ! The backrest (16) is provided with elastic stiffening elements (38) made of a material different from the material constituting the resting portion (28) and arranged only in an area corresponding to the uprights (30) so as to bestow upon said uprights (30) a rigidity to bending hi gher than that of the resting portion (28).
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