This creation provides a kind of extension and contraction control cellular construction improvement of averruncator,It includes mainly that connecting piece is slippingly arranged in pedestal,And locating piece is pivotally arranged on pedestal again,The locating piece of locating piece inner face selectively clip connecting piece,Change the fixation of connecting piece accordingly or adjustable state and meet the needs of flexible,And with the operating bar for the pressure handle connection for being provided with operation, then pivot covers between what pedestal and limited what pedestal and the gear shaft of locating piece,The position of stable operating bar and state accordingly,And the state of stable pressure handle simultaneously,Improve overall structure stability and manipulation certainty.本創作提供一種高枝剪的伸縮控制單元結構改良，其主要是包含座體內可滑移地設置連結片，且座體上再可樞轉地設置定位件，定位件內面的定位塊可選擇地卡掣連結片，據以改變連結片的固定或可調整狀態並滿足伸縮的需求，而與供以操作的壓柄連結的作動桿則樞套於座體並受限於座體及定位件的擋軸之間，據此穩定作動桿的位置及狀態，並同時穩定壓柄的狀態，提高整體結構穩定性及操控確實性。
