The utility model relates to a counterweight structure improvement, which comprises a winding counterweight lead sheet contained between a lead sheet seat and a block body. The winding counterweight lead sheet is at least provided with a binding part, which is mainly formed by rolling the winding counterweight lead sheet to form an inward inclined or inward concave binding part, so as to make each layer of the winding counterweight lead sheet more closely fit the binding part. Therefore, the utility model can effectively prevent each layer of the lead sheet from falling when throwing the rod. The superiority of sliding.一種配重結構改良，其包含在一鉛片座兩擋體之間容置有捲繞配重鉛片，該捲繞之配重鉛片至少環設一卡結部，主要係將捲繞之配重鉛片滾壓形成向內傾斜或向內凹設的卡結部，俾使捲繞之配重鉛片各層能更緊密貼合卡結；據此，即能有效防止抛桿時各層鉛片無下滑產生之優異性。
