Patent ID: 8020682

Claim:
A synchronizer device comprising: a first rotating member provided at a shaft; a second rotating member rotated relative to a shaft axis of the shaft, and including a conical body facing the first rotating member, the conical body forming an outer conical surface; a synchronizer ring having an inner conical surface contacting the outer conical surface of the conical body of the second rotating member, and arranged between the first rotating member and the second rotating member, the synchronizer ring being movable in an axial direction of the first rotating member and integrally rotated with the first rotating member; a sleeve provided at an outer circumference of the first rotating member, and the sleeve being slidable in the axial direction of the first rotating member; a lever provided at an inner circumference of the sleeve and arranged between the first rotating member and the synchronizer ring, the lever including a power point at which the lever receives a pressing force in accordance with the sliding movement of the sleeve towards the second rotating member, the lever pressing the synchronizer ring towards the second rotating member by using the principle of leverage; and a retracting member including a main body, an outwardly biasing portion for pressing the lever outwardly towards the sleeve, and a retracting biasing portion for biasing the lever away from the synchronizer ring and toward the first rotating member, wherein the outwardly biasing portion and the retracting biasing portion are integrally formed on the retracting member.