| 摘要 |
A multi-section angle adjusting structure for a chair back contains a supporting member axially connected to a base and axially inserted to a sliding groove through a shaft to slide in the sliding groove so that the chair back fixed to the supporting member is adjusted to a desired angle relative to the base. The shaft includes a slidable bar fitted thereon to be connected to a slot of the base. Another end of the slot pushes a toothed block biased against by a first spring which contacts with a stop plate so that the toothed block abuts against an end portion of the slidable bar. The slot includes a positioning structure mounted therein, and the positioning structure includes a toothed seat guided by a guiding line to engage with the toothed block. |
