The utility model relates to a brake mechanism of a winder.The winder has a central shaft and a toothed disc.The central axis has a circular segment.A noncircular segment,First stage and first threaded section,The brake mechanism consists of a gasket set,Casing,A brake adjusting device and an elastic part；The gasket pack comprises a first gasket sleeve arranged on the non-circular section and clamped with the central shaft to rotate together.And a first brake gasket is positioned between the first gasket and the toothed plate；The sleeve can be axially and movably arranged on the non-circular section and one end of the sleeve can be pasted on the outside of the gasket group；The brake adjusting device is sleeved on the central shaft and pasted on the outside of the sleeve, and comprises a control screw arranged on the threaded section；The elastic part is sleeved on the central shaft and pasted on the first gasket and the first stage with its two ends.Therefore, the winder can not only brake but also release the brake state smoothly.一種捲線器之煞車機構，捲線器具有一中軸及一齒盤，中軸具有一圓段、一非圓段、一第一階部及一螺紋段，而煞車機構包含有一墊片組、一套管、一煞車調節裝置及一彈性件；墊片組包含有一第一間墊片套設於非圓段並與中軸卡接而能一同旋轉、以及一第一煞車墊片位於第一間墊片及齒盤之間；套管可軸向活動地設於非圓段並以其一端貼抵於墊片組之外側；煞車調節裝置套設於該中軸並貼抵於套管之外側並包含有一控制件螺設於螺紋段；彈性件套設於該中軸並以其二端貼抵於第一間墊片及第一階部。藉此，該捲線器不僅可確實煞車，亦能順利解除煞車狀態。
