Patent attributes
An elevating structure for armrests includes an adjusting member including a main part having an engaging slot formed therein corresponding with a successive toothed groove mounted in an auxiliary part including a push button attached on the top end thereof for receiving a first spring. The first spring abuts against the main part, and the auxiliary part is pushed downward. Each tooth of the the toothed groove is provided with an inclined pushing surface corresponding to a locking recess arranged in the engaging slot. A rail member includes a lock member axially fixed thereon for being pressed by a second spring. A lid covers the lock member. The rail member further includes a window arranged thereon so that the lock projection is inserted into the rail member through the window. Thus, the lock projection is biased to engage with one of the locking recesses.
