A braking device for reels of spinning wheel can be operated corresponded to the operation section and effectively improve the braking force. A levered braking mechanism (6) comprises a one-way clutch (21), a rotation member (22) and a braking operation section (24). The one-way clutch transmits rotation of the yarn delivery direction of reels. The rotation member having braking sections (38) with braking side to both sides of the member and rotated by the interlocked rotation of the yarn delivery direction of reels transmitted from the one-way clutch. The braking operation section is freely movable installed on the main body of the spinning wheel having the first operation unit (50c) for migration at one end, and contacts with the braking side by the first braking slide (51) in the other end. An interlocking mechanism, which is freely movable installed on the main body of the spinning wheel interlocked with migration of the braking operation unit at one end and contacts with another side of the braking side together with the first braking operation section, clamp the second braking block (53) of the braking section.【課題】對於紡車式捲線器的轉子制動裝置，可對應制動操作部的操作而有效提昇制動力。；【解決手段】槓桿制動機構6，是具備單向離合器21、及旋轉構件22、及制動操作部24。單向離合器，是傳達轉子的線吐出方向的旋轉。旋轉構件，是具有在雙面設有制動面的制動構件38，並與從單向離合器傳達的轉子的線吐出方向的旋轉連動而旋轉。制動操作部，是可移動自如地被裝設於捲線器本體，在一端具有移動用的第1操作部50c，在另一端具有藉由第1制動滑塊51與制動面的一方接觸。連動機構，是可移動自如地裝設於捲線器本體，在一端具有與制動操作部的移動並與連動制動面的另一方接觸並可與第1制動作用部一起挾持制動構件的第2制動滑塊53。
