Chair-back adjusting structure

Abstract

A chair-back adjusting structure includes a first plate, a second plate, and a moving component. The first plate has a fixing plate perpendicularly installed thereon. The second plate has two fixing brackets installed thereon. Each fixing bracket defines a through hole. The moving component includes adjusting sleeves, adjusting shafts, and stop collars. The adjusting sleeves are symmetrically arranged on the second plate. Each adjusting sleeve defines therein a channel and is tapered in shape. Each stop collar is mounted around the corresponding adjusting shaft. Each adjusting shaft has one end fixed to the fixing plate and an opposite end entering and fixed in the corresponding channel through the stop collar. In use, the first plate is installed in an upper back part of a chair, and the second plate is installed in a lower back part of the chair, so that the height of the chair back can be adjusted.

Dependencies are inferred from the claim text.