Vehicle Cranks TRIZ Cases

See how a split-type footrest uses snapping parts and hanging arm lugs to enable detachable ass

See how a releasably mountable resilient member in a cycling cleat regulates bias and float to

Integrated conductive holders and insulating layers replace wires in a bicycle pedal battery case, improving vibration reliability and battery replacement.

A radially extended dust cover and impeller keep dirt out of sprocket bearings while avoiding the friction penalty of fully sealed bearings.

A spindle-integrated battery chamber, gauge, and circuit shrink bicycle power meters while shielding signals and components from water and dust.

Pedaling drives a generator inside the pedal pin to power deformation sensing without batteries, charging connectors, or exposed hardware.

Position and motion sensing let pedal-mounted light modules switch forward or rearward output automatically while conserving battery power.

A deformable terminal member maintains stable PCB-to-device contact while cutting assembly parts and adding static protection.

Pedal-mounted light modules use orientation and motion sensing to switch white or red output automatically and save battery power.

A dielectric-backed resonator antenna controls reflected-wave phase shifts near metal parts to preserve radiation amplitude and efficiency.

Pedal rotation drives an internal generator in the pedal pin, powering deformation sensing without batteries or exposed charging parts.

A resonator antenna uses a third conductor as an artificial magnetic wall to limit metal-frame reflections and improve wideband radiation efficiency.

An adjustable brake on the pedal axis limits unwanted spin during jumps and tricks while keeping normal pedaling friction low.

A threaded pin and slotted shaft sleeve adjust pedal braking force to stop unwanted jump rotation without adding constant pedaling drag.

By combining bearing and freewheel functions in one assembly, this case cuts parts, saves drive-unit space, and improves e-bike reliability.

UHMWPE bushings with MoS2 and stainless steel rods replace noisy, corrosion-prone joints while adding overextension safety and easy maintenance.

A boss-and-recess spigot joint keeps one-way clutch members centered in an e-bike drive unit, improving pawl-tooth engagement stability.

A variable lever spacing compensates changing spring force in a crank drive to deliver more uniform torque with lower mechanism cost.

Segmenting a bicycle pawl freewheel into two rings isolates first-ring deformation sensing from radial-force and wear effects for precise torque measurement.

Per-detent deformation sensors in a bicycle freewheel improve torque detection despite radial forces and production tolerances.

A quick-release cam lever replaces small tool-dependent fasteners, securing crank preload position while allowing easy axial adjustment.

A layered labyrinth, rotary seal, and desiccant liner keep dirt and moisture out of bicycle bottom bracket bearings while maintaining low drag.

By using the cup itself as the outer race, this bearing layout fits larger rolling elements in the same space to raise load capacity and bearing life.

Two chainrings share one splined mount and single fastener to keep radial alignment, improve shifting, and simplify replacement.

Two nested chainrings share one spline and fastener to preserve radial alignment, improve torque transfer, and balance speed with clearance.

Gear levers and spur gears vary crank lever length through the pedal cycle to boost torque, reduce dead points, and improve ergonomics.

An adjustable support frame and handle reduce force and abrasion during bicycle crank arm coupling and separation while improving storage portability.

A shared shaft interface and single-screw fixing enable fast crank and gear wheel replacement while preventing lateral play and chain-line deviation.

A threaded chainring-carrier interface enables quick gear changes while cutting bolts, weight, and assembly effort without disrupting power measurement.

Two chainrings share one spline and fastener to balance gearing and clearance while maintaining radial alignment and shifting performance.

An integrated cup uses its inner surface as the outer race, creating room for larger balls that raise load capacity and bearing life.

Segmented arms and varied tooth widths reinforce sprocket rigidity, improve pedaling force transfer, and reduce chain-dropping.

Optimized hollow shaft dimensions and shear strain grids cut bending-induced ellipticalization error, enabling accurate torque sensing in short spindles.

A flat, wide pedal adapter clicks onto clipless pedals to support regular shoes, prevent rotation, and allow easy manual removal.

A flat snap-on pedal adapter lets riders use regular shoes on clipless pedals while preventing rotation and enabling easy manual release.

Separate crank arm and spindle insert manufacturing enables lighter bicycle cranks with secure attachment and lower production complexity.

Tangential strain gauge placement on the bicycle spider isolates pedaling torque for accurate power measurement without weakening the structure.

A splined two-ring crank interface balances larger gearing with vehicle clearance while holding radial alignment for stronger shifting.

A rotatable pedal and spring-loaded lock let the crank fold flat for shipping, cutting packaging volume, assembly effort, and pedal damage risk.

An auxiliary pulley balances chain pull in a treadle scooter drive train, improving clutch actuation, free-wheeling noise, and ride smoothness.

An oil-impregnated polymer reservoir fills the bearing interior to block water ingress, resist corrosion, and extend bicycle bearing life.

Axial stops and bearing-based clamping replace retaining rings in e-bike crank assemblies, improving stability and simplifying assembly.

A movable tread, rack, and pinion shift the pedal force point forward to raise torque and reduce fatigue without frequent gear changes.

Bearing limiting structures shift pedal loads away from the hinge shaft, enabling under-25 mm folded width with stable folding and unfolding.

Pivoting dual platforms with living hinges let riders quickly convert clipless pedals for normal shoes while keeping secure pedal attachment.

Unidirectional couplings and a reversing mechanism turn reciprocating cranks into continuous shaft torque while preserving biomechanical motion.

Flexible support legs and a tilting post help an indoor bicycle mimic outdoor sway, incline, rider fit, and resistance feel.

Removable cleat support plates cut pedal bulk and material use while preserving secure cleat engagement in a thinner clipless pedal.

A ratchet dial and cord loop secure regular shoes on platform pedals while avoiding loose strap ends and enabling one-handed fit adjustment.

An external locking element secures the pedal axle and bearing as one removable unit, enabling maintenance without bearing damage.

Segmented supplementary assemblies clamp onto bicycle pedals to increase thickness, resolving balance issues caused by fixed pedal dimensions.