Chain/Belt Transmission TRIZ Cases

Front-wheel-adjacent battery, controller, and charger placement lowers center of gravity and improves high-speed stability and control.

An endless chain drive lets the motor sit ahead of the swing arm, improving packaging, rigidity, maintenance, and mass centralization.

A rear-facing cylinder head reroutes the exhaust away from the rider's legs, reducing heat exposure and improving riding comfort.

By matching measured transmission gear ratios to preset values, this case estimates e-bike gear steps in real time without visual confirmation.

A rotatable handlebar control sends wireless shift messages from predefined positions, improving bicycle control without bulky separate controls.

Multiple sensing inputs let one controller coordinate front and rear derailleurs, simplifying large ratio changes and reducing manual shift compensation.

Pretrained model interpolation cuts bicycle control learning time while adapting automatic control to different riders, vehicles, and untrained situations.

Chain movement drives an integrated generator to power derailleur shifting, reducing battery charging needs and improving remote-use reliability.

A detachable rechargeable battery and integrated holding terminals keep bicycle switch power reliable while simplifying charging and maintenance.

A central cooling channel and direct inverter-charger mounting shrink EV powerpack space while preserving maintenance access.

Reversing the cylinder head and exhaust layout keeps hot components away from the rider's legs, improving comfort and safety.

Motor control switches response states as pedal speed, force, acceleration, or slope rise or fall to keep assist feel consistent.

A rotatable and tiltable annular shifter transmitter packs multiple shift inputs into handlebar space using magnetic sensing and neutral hold.

Wireless communicators detect component position and orientation to control bicycle devices without cables, improving flexibility and control reliability.

A compact frame layout lowers center of gravity and adds water cooling to keep an electric motorcycle stable and controllable at 120 km/h.

By matching detected transmission ratios to preset values, this case identifies the current e-bike gear without visual confirmation.

An electric motor boosts endless-track torque at low RPM, while engine-heated battery warming preserves current delivery in cold conditions.

A segmented gear case with a wall opening and housing contact cuts EV drive size while containing lubricant scatter and heat rise.

Dual handlebar inputs unify control of assist drive, shifting, and other electric bike components to improve operation without adding control complexity.

A series converter circuit matches power source voltage to the actuator driver, improving bicycle electric unit reliability and source compatibility.

A carbon fiber structural battery spreads energy storage through the frame to cut pack weight, save space, and improve balance.

Cadence-based pre-activation and torque switching help e-bike motors engage the freewheel smoothly, cutting drivetrain vibration and delay.

A form-fitted motor connector links automatically during rear wheel mounting, cutting removal time and reducing connector damage.

A co-axial motor shaft and swingarm pivot keep chain tension stable through suspension travel while the motor case supports the frame.

A detachable lid with a protruding cover shields the battery holder side wall from obstacle contact while keeping the battery stable and compact.

A magnet-held operating ring combines twist and tilt inputs to generate multiple bicycle control signals in limited handlebar space.

When derailleur battery charge drops too low, high gear is disabled to avoid failed shifts and the heavy pedaling load that follows.

A capacitive multi-conductor antenna on a metal brake lever reduces reflected-wave interference while maintaining wireless emission efficiency.

Reversing the cylinder head and exhaust layout moves heat away from the rider's legs, improving comfort and safety on straddle-type vehicles.

A transverse auto-engaging connector links the motor during wheel installation, cutting removal time and reducing plug damage risk.

Localized asymmetric link geometry improves pinion and roller engagement in narrow bicycle chains, increasing shifting precision.

A detachable handlebar switch and internal wireless communicator simplify control of gears, brakes, and other electric bike components.

A detachable battery holder with a flexible electrical link enables quick recharging and seamless power-source switching in bicycle components.

Driven-pulley-speed-based piston force control helps a CVT handle uphill stand conditions with lower friction, noise, and vibration.

A locally reduced inner plate overhang avoids tooth load-flank contact during outboard shifting, cutting jolts, friction, and derailment risk.

A battery-powered wireless front derailleur uses a compact motor gearbox and four-bar linkage to cut cable bulk while preserving precise shifting.

A pretensioned guide carriage uses translational release before rotation to keep a vehicle drive chain secure while allowing tool-free opening.

Oversized circumferential pulley bearings create a free center that sheds dirt, improves derailleur chain guide durability, and eases cleaning.

A pivoting guide roller with elongated-slot locking tensions bicycle belts on frames with fixed rear wheel positions.

A nested first pinion supports 10-tooth-or-smaller sprockets, easing rear axle mounting while keeping torque transfer secure and lightweight.

Radially movable sprocket segments enable enclosed bicycle gearbox shifting without lateral displacement, improving durability and handling.

Transverse preload keeps rotating chain guide elements securely closed in use while allowing tool-free opening for chain repair or removal.

A plastic toothed ring overmolded on a metal support improves stiffness, self-cleaning, and keeps the derailleur protected during blockage.

A four-bar wireless front gear changer removes cables, simplifies bicycle installation, reduces drag, and preserves reliable shifting.

Oblique chain guides keep a bike chain engaged on one trainer sprocket, enabling quiet virtual shifting with less wear and simpler setup.

A composite aluminum and carbon-fiber-reinforced nylon sprocket boosts lateral stiffness under cross-chaining while cutting weight and waste.

A friction clutch in the rear derailleur maintains chain tension in normal riding, then disengages during suspension travel to reduce pedal feedback.

A metal outer assembly and carbon fiber reinforced nylon center raise lateral stiffness, cut weight, and resist cross-chaining pull.

A bicycle belt pulley uses a smaller pitch than the belt to maintain meshing under frame torsion and center-distance changes.

A smaller-pitch pulley with asymmetric grooves keeps bicycle toothed belts aligned and engaged under frame twist and high torque.

A guided single sprocket keeps the chain engaged during physical shifts, enabling virtual gearing with less wear, noise, and setup effort.

Friction stir welding joins multiple sprockets to a carrier through central holes, cutting bicycle cog assembly time, cost, and machining effort.

Cadence and driving torque feedback define permitted shift timing, helping bicycle drivetrains avoid shift shock and improve shift performance.

Localized bevels at chainring tooth roots match roller chain approach angles to improve retention, reduce derail risk, and shed debris.

Laterally offset sprocket tooth tips and selective outer-link protrusions improve chain guidance, smoother shifting, and lower noise.

Rotating electric actuators shift segmented sprockets without stationary contact, reducing wear, noise, tolerancing, and assembly effort.

A multi-sprocket drivetrain with a gear range quotient above 5 balances gear steps and enables efficient shifting in human-powered vehicles.

Differently shaped internal spline teeth prevent wrong sprocket assembly while improving torque transfer, shifting performance, and stress resistance.

Alternating wide-narrow sprocket teeth and asymmetrical chain links improve chain retention, shifting precision, and wear tolerance.

A coaxial rear derailleur mount with a frame adapter and adjustment screw improves alignment stability, chain tensioning, and load resistance.

A vibration-triggered wake sensor lets wireless bicycle shifting stay in low-power mode until movement, reducing battery drain without losing link reliability.

Axial guide portions keep adjacent sprocket teeth aligned, easing small-diameter sprocket mounting while widening gear range and securing attachment.

Small rear sprockets are merged into a monolithic cogset to improve coupling rigidity, expand gear ratio options, and keep shifting precise.

Alternating tooth protrusions and recesses keep the bicycle chain engaged under rough-terrain tension changes while reducing frame and chainring damage.

Elastic grooved cushioning rings on a rear derailleur pulley damp chain-link forces to cut noise, prevent buckling, and keep shifting smooth.

A movable chain casing with integrated guide sprockets and a tensioning arm keeps bicycle chains enclosed, quiet, and low-wear without frequent adjustment.

Partial protrusions on wide chainring teeth improve chain retention in muddy conditions while cutting weight, resistance, and noise.

Gradually tapered wide teeth guide chain realignment while cutting side loads, friction, and wear in narrow-wide bicycle chainrings.

Three-position chain ring teeth apply opposing lateral forces to match alternating chain links and reduce disengagement, catching, and debris buildup.

A separate movement detector wakes the derailleur radio only during riding, preserving shift response while cutting standby battery drain.

Flat load flanks and wear-managing recesses keep bicycle chain rollers disengaging cleanly, reducing chainsuck and radial jumping.

An axially projecting support on the largest sprocket catches a dropped chain before it jams against spokes and locks the rear wheel.

A metal outer ring and carbon-fiber-reinforced center boost front sprocket stiffness under cross-chaining while reducing weight and material waste.

A forward-routed curved cable harness gives the motor and drive unit enough slack for easier mounting without increasing vehicle width.

Alternating tall and short sprocket teeth improve chain holding, lower contact wear, and extend service life in bicycle drivetrains.

Asymmetrical inner and outer chain link plates improve mounting orientation, chain guidance, and load distribution in narrow multi-sprocket bicycle drivetrains.

Asymmetric tooth projections improve chain holding when the chain runs at an angle, reducing wear and preserving sprocket efficiency.

Rounded nose wheels and adjustable belt tension improve traction on wet terrain while preventing motor slip.

Segmented mounting system for bicycle derailleur chain guides enables independent angular adjustment, eliminating simultaneous alignment with the chain thrower.

Adjustable resistance applying component presses against mount seat inner surface to stabilize bicycle rear derailleur mounting.