Chair back adjusting structure

The utility model discloses a chair back adjusting structure, it is main including adjustment ware and the front and back adjuster of going up and down, and the automation is high, the operation is thus simple, a two flute profile rocking arms meshing pin joint fixed plate, and on the solid piece of the other end of two flute profile rocking arms difference pin joint frid one end in orbit and card, but the position of the relative rail frid of the solid piece of fitting card and the relative angle that changes two flute profile rocking arms be back displacement fixed plate in the past, borrow by the combination of the adjustment ware adjuster around with that goes up and down and via back of the chair board and the rigid coupling back of the chair, it has the lift to reach the back of the chair, the efficiency of front and back adjustment. 本实用新型公开了种椅背的调整结构，主要包括升降调整器及前后调整器，该升降调整器由卡掣块轨接于轨道板中并相对轨道板构成多段卡掣定位，而前后调整器则以卡固块轨接于轨槽板中并相对轨槽板构成多段卡掣定位，两齿型摇臂啮合枢接固定板，且两齿型摇臂的另端分别枢接在轨槽板端及卡固块上，可调整卡固块相对轨槽板的位置而改变两齿型摇臂的相对角度以前后位移固定板，借