Wheel Based Transmission TRIZ Cases

A modular utility vehicle system couples a maneuverable first module with a larger second module for unified operation.

A multi-speed bicycle gear hub uses one-way clutches to fix sun gears relative to the axle, creating a compact axial profile for planetary sets.

An electric drive actuates an adjusting device to vary transmission ratios in e-bikes.

Integrating downstream planetary gear carriers with upstream gears reduces diameter and weight while maintaining 11 speed stages.

Dual-linkage rear suspension pivots rigid triangles to absorb bumps while resisting pedal-induced energy loss that wastes rider effort.

A central shaft torque sensing system uses a strain sleeve to measure pedaling force for electric bicycles with center-mounted motors.

A carrier-actuated pressure roller displaces pawls from sun gear teeth, reducing the rotational force required for uphill gear changes.

A coaxial outrunner gear motor mounts directly to bicycle bottom brackets using nested planetary reduction stages.

Coplanar joint surfaces allow simultaneous processing of side plates and engine hangers, reducing manufacturing steps.

Centrifugal governor weights adjust transmission ratios via ratchet mechanisms, eliminating manual shifting for improved ride comfort.

A therapeutic tricycle with a dual wishbone lever system and suspension-mounted wheelie bar prevents tipping during turns.

A bicycle drive device uses an electric machine and control system to adjust rotor shaft speed during gear changes.

A bicycle crank transmission assembly uses a secondary axle supported on one axial side to enable independent removal of the second transmission.

Elongated cylindrical rolling elements minimize axial forces and spin ratios, enabling over 90% efficiency and a 600% range despite high Hertzian stresses.

An eccentric wheel transmission system varies speed ratios through synchronous belt drive to optimize treadle force application.

Integrating multiple gear stages onto a single gearing support reduces the volume of moving objects while maintaining high gear ratios.

A bicycle frame cavity receives a sensor device to maintain aerodynamic contour while preventing theft.

A telescoping boom clamp uses a locator tab to maintain pedal orientation during length adjustment.

Electronic controller adjusts transmission ratio via motor-driven derailleur, resolving shifting inefficiency through systematic parameter monitoring.

A compact e-bike motor uses planetary gears and magnetic levitation for high power.

A bicycle hub friction mechanism disengages freewheel pawls via a control sleeve, preventing pedal damage from backward rotation in tight spaces.

A detachable drive assembly integrates motor, transmission, and power supply into a replaceable module for personal mobility vehicles.

A shift actuator uses a positioning pin to temporarily secure the drive shaft relative to the housing.

Segmented retaining rings replace heavy bolts to cut assembly time and prevent damage during maintenance.

Dual valves adjust outward and inward damping forces independently, preventing cavitation and reducing vibrations across temperature changes.

A microprocessor control unit adjusts a bicycle derailleur position to prevent chain contact with the cage, reducing noise and wear.

Wedge-shaped teeth on nested sleeves engage to lock the frame, preventing unintended folding while maintaining structural strength.

A planet carrier ring-freewheel assembly integrates the rings via positive connection to transmit torque in wheel hub drives.

Segmented clutch lugs reduce pedal input time lag without increasing radial size, resolving the trade-off between speed and compactness.

A vehicle speed change apparatus controller manages shift spindle rotation to cancel shallow dog teeth engagement during gear changes.

A bicycle rear suspension linkage system uses eccentric members to control chainstay lengthening during vertical travel.

A coaxial electric motor drive assembly uses a reduction gearset to transmit power from the motor output shaft to the drive sprocket.

A selective coupling engages the internal motor only during low-speed maneuvers to improve handling without adding permanent weight.

A separable junction body transmits rotation to a spaced rotor, resolving detection errors from fixed positioning constraints.

Varying pressure angles on asymmetrical gear teeth resolve the trade-off between miniaturization and load capacity in bicycle transmissions.

Segmented wheel design resolves installation complexity by enabling universal mounting across diverse bike frames.

Triangular frame structure supports motorcycle storage box loads without compromising vehicle width.

Saver springs route rotational force through distinct paths to reduce load on the electric actuator during high-torque gear shifting.

Second transmission dynamically adjusts ratio based on load conditions to prevent assist force drops when crank rotational speed varies.