Office chair with an adaptable lumbar support

摘要

An office chair (1) including a seat (2), a backrest (3) including a lumbar support (4), an actuator device (8) arranged to enable adjustment of the lumbar support (4) between an inactive position in which it follows the general shape of the backrest (3), and a fully active position in which it is adjusted outwards forwardly from the backrest (3) in order to support the lumbar back portion of a person seated on the seat (2). The lumbar support (4) includes a first part (200) with first (201) and second (202) ends and a second part (300) with first (301) and second (302) ends. The first ends (201, 301) of the first and second parts (200, 300) are connected to each other via a pivoting point (400) and the second ends (202, 302) are pivotally coupled to the backrest (3), wherein at least one of the second ends (202, 302) of the parts (200, 300) is slidably arranged along the backrest (3) and wherein the actuator device (8) pushes and/or pulls the slidable ends (202, 302) in response to actuation.

主权项

1. An office chair comprising a seat, a backrest including a lumbar support, an actuator device arranged to enable adjustment of the lumbar support between an inactive position in which it follows the general shape of the backrest, and an active position in which it is adjusted outwards forwardly from the backrest in order to support a lumbar back portion of a person when seated on the seat, wherein the lumbar support includes a first part with a first end and a second end and a second part with a first end and a second end, said first ends of said first and second parts are connected to each other via a pivoting point and said second ends are pivotally coupled to the backrest, wherein at least one of said second ends of said parts is slidably arranged along the backrest, wherein the actuator device pushes or pulls said one of said second ends in response to actuation, so as to cause a sliding movement of said one of said second ends, wherein the seat is tiltable between an initial position and a relatively forwardly tilted position, and wherein the actuator device causes said pushing or pulling on said one of said second ends in response to tilting of the seat.