| 摘要 |
<p>Chair backrest, comprising a support structure (12) constituted by a single piece of injected plastic material, including a bearing section (18) having a front surface (16) against which a user's back is to bear. The bearing section (16) has an opening (20) that extends in a lumbar region of the front surface (18). The backrest (22) comprises a lumbar support panel (22) movably positioned in said opening (20). The lumbar support panel (20) has a front surface (24) against which a lumbar region of the user's back is to bear and it has an outer perimeter that is connected to the edge of said opening (20) by means of an elastic element that tends to thrust the support panel (22) towards a position in which the front surface (24) of the lumbar support panel (22) projects anteriorly relative to the front surface (18) of said bearing section (16).</p> |
