Wheel Based Transmission TRIZ Cases

A hub motor arrangement integrates a standard electric motor with a planetary gear transmission system to deliver drive torque within a compact housing.

A bicycle driving apparatus uses a planetary gear and one-way bearing to transfer force from alternating pedal presses.

Nested planetary gear mechanisms reduce hub diameter and weight while enabling high speed stage counts.

A bicycle transmission uses a crown gear with controlled deformation to measure drive torque through an electrical strain gauge.

A bicycle hub gearbox uses a tubular linking member to permanently synchronize two planetary gear mechanisms for smooth operation.

Extraction of the ring gear and inversion of the planetary system simplifies structure while enabling direct hub shaft rotation.

A power transmission apparatus uses a ring gear and directional clutch to couple gears based on rotation.

Offset fasteners secure lever arms to the axle, eliminating crossbar clearance needs and reducing manufacturing costs.

A compact electric vehicle transmission integrates a unidirectional clutch mechanism to drive rear wheels while maintaining synchronous belt tension.

A bicycle shifting device uses multiple planetary mechanisms to establish distinct transmission paths for varied gear ratios.

A tubular frame member features a concave section on its underside to define an oval-shaped depression for ergonomic hand placement.

Rotatable claw members connect a motor housing to a crankarm, enabling easy conversion of existing bicycles without specialized tools.

Triangular cut-out supports mount drive motors on varied axles while a latch enables quick removal for theft protection.

Molded upper and lower head pipes support the main frame and down tube to create a lightweight vehicle body structure.

Segmented pedals with double ratchets transfer combined power while preventing steering interference from handle operation.