US 5,209,548 AGranted

Chair, in particular office chair

AssigneeGiroflex Entwicklungs AG

InventorHermann Locher

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Abstract

There is proposed a chair, particularly an office chair, of adjustable height and inclination which has a seat support (75), a backrest support (80), a standing column (10) with first gas spring (20) arranged therein, a support member (25) arranged in horizontal plane on the standing column (10), and a first guide rod (65) and a second guide rod (70). The second guide rod (70) is mounted with two struts laterally on the support member (25) and is functionally connected with a transmission mechanism. The transmission mechanism arranged in the support member (25) is developed as an angular gearing which transmits the swinging movement of the second guide rod (70) which is oriented in the direction of the arrow B', on the one hand, by correspondingly arranged swing levers (62, 62') to a second gas spring (60) which is spaced from and parallel to the support member (25) and, on the other hand, via a tensioning device arranged in the support member (25), to the gas spring (20) which is arranged in the standing column (10).

Claims13

Dependent claims

A chair which is of adjustable height and inclination, comprising:

a seat support (75);
a backrest support (80);
a standing column (10) having a first spring element (20);
a support member (25) arranged on the standing column (10) in a horizontal plane, the seat and backrest supports being swingable rearwardly about a horizontal axis (X) of the support member (25);
first guide rod means (65) connecting a front part of the seat support (75) to the support member (25);
at least one second spring element (60) provided at a distance from the horizontal axis (X) so as to oppose rearward swinging of the seat and backrest supports;
second guide rod means (70) including two struts (71, 71') arranged on the support member (25) so as to be swingable about the horizontal axis (X);
and
two transmission means arranged in the support member (25), a torsion rod (45) connecting the two transmission means and having operatively connected tensioning means (50), each of the struts (71, 71') being operatively connected to a different one of the transmission means (35, 35') so that swinging movement of the struts (71, 71') is transmitted synchronously by the two transmission means (35, 35') to the at least one second spring element (60) and, via the torsion rod (45) and tensioning means (50), to the first spring element (20).

6 more elements

Dependencies are inferred from the claim text.