Friction Ring With Dual Cone Angles For Synchronizer Torque

The friction ring is divided into two distinct conical surfaces: an inner friction surface with a first cone angle optimized for generating synchronizing torque, and an outer installation surface with a second cone angle optimized for releasing the friction pairing. This segmentation allows each surface to have different geometric properties tailored to its specific function, resolving the contradiction between torque generation and ease of release.

Different regions of the friction ring are given different cone angles to optimize local functions. The inner friction surface has a smaller cone angle for maximum torque capacity, while the outer installation surface has a larger cone angle to prevent self-locking and facilitate release. This local differentiation of geometric properties allows simultaneous optimization of both synchronizing performance and shifting comfort.

Instead of adding multiple separate friction surfaces, the invention segments a single friction ring into two conical surfaces with different angles. This approach achieves enhanced torque capacity through optimized geometry rather than through multiplication of components, thereby avoiding the increased complexity, cost, and weight that would result from multiple friction surfaces.

The invention optimizes torque capacity by changing the geometric parameters (cone angles) of the friction surfaces rather than by adding more surfaces. The inner friction surface uses a smaller cone angle to maximize torque, while the outer surface uses a larger angle for release. This parameter optimization achieves high torque capacity without increasing device complexity.