| 摘要 |
An apparatus for adjusting the inclination of a chair back, is disposed on the chassis at the bottom of a cushion and pivotally coupled to the middle of a base at the upper end of chair legs. A control rod has its middle predetermined position pivotally coupled to the base. A positioning plate has a bolt at its top surface and is disposed at the rear end of the base. A resilient component is pivotally coupled such that one end of the resilient component is hooked into an end of the control rod, and the other end of the resilient component being hooked into the bolt at the top surface of the positioning plate. When the control rod is turned to swing its end, the resilient component rotates, so that one of the resilient legs of the resilient component produces an elastic push onto the positioning plate. Thus the positioning plate contracts and moves to embed into or withdrawal from a latch groove disposed at the bottom rear side of the chassis. Therefore, the pushing force of a spring can be acted completely on the positioning plate and the positioning plate can move smoother, making operation easier and simpler.
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