Chair backrest device

Details Chair backrest device Chair backrest device

A - Human Necessities

47

C

A47C 7/40 (2006.01) A47C 3/026 (2006.01) A47C 7/44 (2006.01)

Patent

CA 2669068

A backrest device for a chair, capable of, without a reduction in its strength and rigidity, effectively bending backward so as to follow the shape of the back of a person seated on the chair, providing the person with excellent sitting comfort. In the backrest device, a back board (11) is supported by a backrest frame, and the back board (11) has a flexible back stopper (13) on the inner side of a back frame (12). The thickness of a vertical intermediate section of the back stopper (13) is gradually increased from both left and right sections of the intermediate section toward the center such that the thickness is less in both left and right sections and is maximum at the center.

L'invention concerne un dispositif de dossier pour un fauteuil, capable de, sans réduction de sa résistance et de sa rigidité, se courber de façon efficace vers l'arrière, de façon à suivre la forme du dos d'une personne assise sur le fauteuil, fournissant à la personne un excellent confort d'assise. Dans le dispositif de dossier, une planche arrière (11) est supportée par un cadre de dossier, et la planche dorsale (11) a une butée arrière souple (13) sur le côté interne d'un cadre arrière (12). L'épaisseur d'une section intermédiaire verticale de la butée arrière (13) est progressivement augmentée à partir des deux sections gauche et droite de la section intermédiaire vers le centre, de telle sorte que l'épaisseur est moindre dans les deux sections gauche et droite et est à son maximum au centre.

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