Patent ID: 8449035

Claim:
A chair, in particular an office chair, comprising: a pedestal for supporting relative to the floor; a seat support in connection with the pedestal; a seat arranged on the seat support; a backrest support supporting a backrest, which backrest support is connected detachably to the seat support, said seat support comprising a backrest support mount for holding the backrest support, whereby the backrest support is pushable into the backrest support mount; a securing device for locally securing the backrest support on the seat support, wherein the securing device comprises a manually actuable securing body, said securing body being mounted on the seat support and said securing body being movable between a locking position and a release position, said securing body comprising a locking element for locking interaction with the backrest support, said locking element engaging in the locking position in the backrest support, said locking element engaging, in the locking position, in the backrest support in a positive manner, said locking element having a plate-like design, wherein a bearing opening is formed in an upper wall of the backrest support mount, said bearing opening having a shape and a size that corresponds substantially to a shape of the locking element and surface dimensions of the locking element.