Detent Freewheel Torque Sensing for Bicycle Drive Accuracy

The patent divides the torque detection function into multiple independent detent elements (at least two detents) that engage with tooth arrangements on separate rings. Each detent independently detects torque through its own deformation, allowing the system to segment the measurement function and compensate for individual detent variations and disturbance forces by combining readings from multiple detents.

The patent implements individual deformation sensors for each detent element, allowing local measurement of torque at each detent position. This local quality approach enables the system to detect and compensate for position-specific disturbance variables and production tolerances by treating each detent's measurement independently rather than using a single centralized sensor.

The patent employs feedback by continuously monitoring the engagement state and deformation of multiple detents with individual sensors. The system uses this feedback information to distinguish between deformation caused by actual torque transmission and deformation caused by disturbance variables such as radial forces and production tolerances, enabling compensation and improved measurement accuracy.

The patent changes the measurement parameter from a single aggregate deformation measurement to multiple independent deformation measurements from individual detents. By measuring deformation at multiple locations and comparing these parameters, the system can identify and compensate for disturbance variables that affect individual detents differently, thereby improving overall measurement precision.

The patent makes each detent element a multi-functional component that simultaneously serves mechanical torque transmission and individual torque measurement functions. Each detent with its associated sensor acts as a self-contained measurement unit, eliminating the need for separate sensing mechanisms and reducing overall system complexity despite having multiple detents.

The detent elements are designed to be self-measuring components where the deformation of each detent directly indicates the torque it is transmitting. This self-service approach eliminates the need for complex external measurement systems, as each detent inherently provides its own measurement data through its deformation, which is then captured by simple deformation sensors.