This creation relates to an improvement of the structure of the reel shaft, which mainly makes the reel have a shaft hole penetrating through the shaft, and the shaft is recessed on both sides of the corresponding shaft hole to form a block accommodation groove and a fixed knob accommodation The groove allows the shaft to pass through the shaft hole of the shaft, forming a coupling portion at one end of the shaft, and a cushion block is provided at one end of the coupling portion and the shaft, and the cushion block is concavely provided with an arc-shaped contact surface corresponding to the coupling portion Positioned tightly against the combination, the block is provided to be accommodated in the receiving groove of the block, the other end of the shaft is formed with a threaded section, so that the fixed knob is screwed and fixed with the threaded section of the shaft, and the circumference of the knob is fixed It is accommodated in the groove of the fixed knob； thereby, it can prevent the fishing line from being bent or broken, and the user can directly adjust the shaft and the reel without using additional tools. The degree of urgency between the shaft parts can also allow users to directly disassemble and disassemble the fishing line by rotating their hands, and the utility function characteristics are more added to the overall implementation of the fishing line.本創作係有關於一種捲線器轉軸結構改良，其主要係令捲線器於軸部貫穿開設有軸孔，軸部於對應軸孔之兩側凹設形成有墊塊容設槽、固定旋鈕容設槽，令軸桿穿設於軸部的軸孔內，於軸桿一端形成結合部，於結合部與軸桿結合之一端設有墊塊，墊塊對應結合部凹設有弧形貼靠面緊密貼靠結合定位，墊塊供容設於墊塊容設槽內，軸桿之另一端形成有螺紋段，令固定旋鈕以螺孔與軸桿之螺紋段螺設結合固定，固定旋鈕之周緣容設於固定旋鈕容設槽內；藉此，可防止釣魚線有卡掣彎折或斷裂現象發生，且不需額外使用工具，即能讓使用者直接以手部轉動調整軸桿與捲線器之軸部間的緊迫程度，並亦可讓使用者直接以手部轉動拆卸進行該釣魚線的整理，而在其整體施行使用上更增實用功效特性者。
