초록 ▼

An office chair including a seat portion, a backrest portion joined to the seat portion in an articulated or flexible fashion, and an underframe. The seat portion is articulatingly supported, in an area of a forward edge thereof, on a front bearing pipe and the backrest portion is supported approxim

An office chair including a seat portion, a backrest portion joined to the seat portion in an articulated or flexible fashion, and an underframe. The seat portion is articulatingly supported, in an area of a forward edge thereof, on a front bearing pipe and the backrest portion is supported approximately at a hip level through supporting levers on a horizontally extending supporting shaft disposed below the seat portion at a distance therefrom so that solely by shifting one\s weight, the inclination of the backrest portion and seat portion can be varied. A locking mechanism, which may be conveniently manipulated from a sitting position and which does not impair the overall appearance of the chair is provided which includes a locking lever disposed in a space between the bearing pipe and the supporting shaft in a housing section of the underframe. The locking mechanism is operable by way of a transmission path from an operating lever arranged in close proximity below the forward edge of the seat portion.

대표청구항 ▼

A chair comprising a seat portion, a backrest portion flexibly joined to the seat portion, means for urging the backrest portion into a substantially vertical position, support means for supporting the seat portion and backrest portion including a front bearing means articulatingly connected to a fr

A chair comprising a seat portion, a backrest portion flexibly joined to the seat portion, means for urging the backrest portion into a substantially vertical position, support means for supporting the seat portion and backrest portion including a front bearing means articulatingly connected to a front edge of the seat portion, a locking means for locking the backrest portion in the vertical position and at least one inclined position, lock operating lever means pivotably mounted to the support means for controlling an operation of the locking means, a lock operating sleeve means operatively connected to said locking means and extending through said front bearing means, force transmission means interposed between said lock operating sleeve means and said locking means, said locking means including catch means cooperable with said lever means for selectively locking the back rest portion in said vertical position and in said at least one inclined position upon actuation of said lock operating lever means.