| 摘要 |
<p>The invention provides a generally usable, extremely simplified basic framework for a chair such as an easy chair with an adjustable back support, which can be locked in different positions. The basic framework including the necessary mechanism for adjusting the back and locking it in a desired position. Said framework comprises two simple frames or panels, forming a seat part and a more elongate back support part, and a frame holder united to the seat part for carrying the framework. Both parts are joined to each other by means of a transverse hinge in such a way that a lever of a given length is formed between the hinge and the adjacent short side of the back support part. A gas damper is articulately coupled between the said short side of the back part and the holder joined to the seat part. The back support part is caused to swing by the stroking movement of the gas damper and, by closing off the gas transfer duct in the damper by means of an operating lever, the framework can be locked with the back portion assuming the desired sloping attitude.</p> |
