Bicycle Chain Force Measurement via Deformable Dropout

The patent introduces a deformable dropout as an intermediary element between the chain and the frame. This dropout contains a measuring cell that detects deformation caused by chain forces. By using this intermediary, the complex task of directly measuring chain force is transformed into measuring the deformation of a specific component, simplifying the overall measurement system while maintaining accuracy.

The patent replaces complex mechanical force measurement systems with a more sophisticated but integrated deformation sensing approach. Instead of using multiple force sensors or complex mechanical linkages, the system uses a deformable dropout with embedded measuring cells that convert mechanical deformation into electrical signals, reducing mechanical complexity.

The patent merges the dropout function with the measurement function. Instead of adding separate measurement devices to the axle or hub, the measuring cell is integrated directly into the dropout structure. This combination eliminates the need for separate axle or hub modifications, maintaining ease of manufacture while achieving accurate chain force measurement.

The deformable dropout serves multiple functions: it maintains the chain tension, allows gear changes, and simultaneously acts as the measuring element for chain force. This multi-functionality eliminates the need for separate measurement components that would require additional adaptations to the axle or hub system.