Patent WO-2021019263-A1 (WO)
Inventor: RECSKI JÁNOS
IPC: A47C3/025
Filed: 2020-07-23
Abstract: The invention relates to a chair, in particular an active office chair, comprising a base portion (2), a seat surface (3) with a backrest (4), and a support member adapted for connecting the seat surface (3) to the base portion (2). The invention furthermore relates to a method for bringing into motion, in a periodically repeating manner, the seat surface (3) of a chair, in particular an active office chair, the office chair comprising a base portion (2), a seat surface (3) with a backrest (4), and a support member adapted for connecting the seat surface (3) to the base portion (2). The chair according to the invention is characterised in that the support member situated between the base portion (2) and the seat surface (3) is formed of an adjustment and fixing means (8) that is adapted for adjusting the height of the seat surface (3) and is connected to a mounting plate (5) disposed under the seat surface (3), and means (6, 7) that are disposed symmetrically beside the adjustment and fixing means (8) and are adapted for moving the seat surface (3), where the means (6, 7) adapted for moving the seat surface (3) and the height adjustment and fixing means (8) are connected to the mounting plate (5) carrying the seat surface (3) of the chair (1) by articulated members (9, 10), with the moving members (6, 7) adapted for moving the seat surface (3) being connected to the base portion (2) by means of resilient connecting members (13), the chair further comprising a connecting member (11, 12) adapted for connecting the height adjustment and fixing means (8) to the articulated members (9, 10), a power supply adapted for supplying power to the means (6, 7, 8) disposed in the base portion (2), and a control unit adapted for operating the means (6, 7, 8). The method according to the invention is characterised in that, in the chair applied for carrying out the method the support member situated between the base portion (2) and the seat surface (3) is formed of an adjustment and fixing means (8) that is adapted for adjusting the height of the seat surface (3) and is connected to a mounting plate (5) disposed under the seat surface (3), and means (6, 7) that are disposed symmetrically beside the adjustment and fixing means (8) and are adapted for moving the seat surface (3), where the means (6, 7) adapted for moving the seat surface (3) and the height adjustment and fixing means (8) are connected to the mounting plate (5) carrying the seat surface (3) of the chair (1) by articulated members (9, 10), with the moving members (6, 7) adapted for moving the seat surface (3) being connected to the base portion (2) by means of resilient connecting members (13), the chair further comprising a connecting member (11, 12) adapted for connecting the height adjustment and fixing means (8) to the articulated members (9, 10), a power supply adapted for supplying power to the means (6, 7, 8) disposed in the base portion (2), and a control unit adapted for operating the means (6, 7, 8), the method comprising the step of bringing the seat surface into motion in a periodically repeating manner by means of a control program, stored in the control unit, that is configured according to the needs of the occupant seated on the seat surface (3).