A centrifugal brake mechanism (23) brakes a spool (12) rotatably attached to a reel unit (1) by means of centrifugal force. The centrifugal brake mechanism (23) includes a rotation member (62), at least a brake shoe (64) and a brake drum (66). The rotation member rotates at least in coni unction with rotation of the spool in a fishing-line releasing direction. Each brake shoe includes first and second ends (64a, 64b). Each brake shoe is pivotably attached to the rotation member about an axis arranged in parallel to a spool shaft (16) and arranged between the first end and a center of gravity (GR). The brake drum is disposed inwards of the brake shoe (64) in a rotation member radial direction, and includes an outer peripheral surface (66d) contactable to the first end of the pivotable brake shoe with different diameters.對於雙軸承捲線器的離心制動裝置,不會導致捲線器的大型化,可以廣範圍地調整穩定的制動力。離心制動機構(23),是藉由離心力來制動可旋轉自如地裝設於捲線器本體(1)的捲筒(12)。離心制動機構(23),是具備:旋轉構件(62)、及至少一個煞車塊(64)、及制動鼓(66)。旋轉構件(62),是與捲筒(12)的至少線吐出方向的旋轉連動而旋轉。煞車塊(64),是具有第1端(64a)及第2端(64b)。煞車塊(64),是在第1端(64a)及重心(GR)之間繞與捲筒軸(16)平行的軸周圍可擺動自如地裝設於旋轉構件(62)。制動鼓(66),是被配置於煞車塊(64)的徑方向內側,具有可由不同的直徑與擺動的煞車塊(64)的第1端(64a)接觸的外周面(66d)。GR‧‧‧重心PC‧‧‧擺動中心RD‧‧‧線吐出方向SC‧‧‧捲筒軸芯23‧‧‧離心制動機構62‧‧‧旋轉構件62a‧‧‧轂部62b‧‧‧滑塊安裝部62c‧‧‧連接部63a‧‧‧本體部63b‧‧‧滑塊支撐部63c‧‧‧擺動限制部63d‧‧‧切換突起63e‧‧‧安裝面64‧‧‧煞車塊64a‧‧‧第1端64b‧‧‧第2端64c‧‧‧轂部64d‧‧‧內側面64e‧‧‧接觸面64f‧‧‧突出面64g‧‧‧傾斜面64h‧‧‧切換凹部64i‧‧‧外側面64j‧‧‧切換操作部66‧‧‧制動鼓66a‧‧‧第1平行面66b‧‧‧錐面66c‧‧‧第2平行面66d‧‧‧外周面70‧‧‧通斷(ON/OFF)切換機構
