| 摘要 |
A chair has a height-adjustable back rest (27), a back rest support (1) and an adjusting member (2) which supports the back rest. The adjusting member (2) is guided on the back rest support (1) and is movable relative thereto. A detent mechanism (9,26), which can be released against the effect of compression spring (22), is provided between the back rest support (1) and the adjusting member (2). An activating member (10,11) of the detent mechanism (9,26) is pivotably mounted relative to the adjusting member (2) by a mounting bolt (6) and is connected with a detent member (7) which cooperates with one detent hole (26) of several detent holes (26) provided in the back rest support (1). In order to be able to arrange the activating location within wide limits at any desired distance from the detent location with the use of simple parts, the mounting bolt (6) is arranged with its axis horizontal. At least one of its upwardly bent ends is formed as an activating arm of the activating member (10,11).
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