Toothed Gearings TRIZ Cases

A metal ring embedded during injection molding limits radial shrinkage in plastic transmission gears, improving accuracy, strength, and rigidity.

Overlapping the input shafts and countershaft with the drive shaft cuts power unit width and frees vehicle packaging space.

An eccentric two-part idler gear keeps tooth flanks engaged to cut backlash, rattle, wear, and transmission noise under torque changes.

A conical spring in matched annular grooves locks the ring gear into the housing while adding axial preload and easing gearbox assembly.

Front-side non-generating cutting forms internal bevel gear teeth without gear mutilation, reducing cost and machining time.

A grooved shift drum and radially biased fork-rod layout improve dog alignment, cut twisting forces, and keep the transmission compact.

Asymmetric involute discs and spiral spring preload eliminate gear backlash, axial play, and alignment sensitivity while maintaining rolling contact.

A cam-driven worm gear feed expands inner roller radial adjustment while improving rigidity and positioning precision for power spinning baseplates.

Helical gear thrust keeps dogs engaged with slide-ring holes, avoiding inverse tapers and reducing transmission machining complexity.

A cycloid decelerator cuts counter torque in a CVT belt clamp drive, reducing power use while maintaining anti-slip clamping force.

A drill-driven segmented sleeve and screw mechanism removes shafts from apertured members while staying workable in confined spaces.

Independent equal torque on dual gear crowns sets precise alignment, reducing load asymmetry, wear, noise, and vibration.

A carrier-ring actuating part switches multiple gearbox elements directly, cutting mechanism complexity and easing hand-held power tool operation.

Selective clutch and range-clutch engagement expands speed options in a compact transmission while lowering gear spread and torque loads.

A biasing mechanism between the carrier and output shaft preloads gear engagement to cut backlash and improve positional accuracy.

A vertical gear train layout lets a steerable vehicle track fit smaller tractors without raising ride height while preserving traction and ground speed.

A movable intermediate gear set changes transmission stages without axial input shaft movement or dog clutches, while maintaining gear engagement.

A shared drive motor and cam layout combines P-gear parking and forward shifting to cut transmission complexity, leakage risk, and power loss.

Dynamic intermediate rotors let rolling mill shafts follow changing roll spacing while reducing vibration, friction, and coupling load.

A variable-radius planet pin contour offsets axial-load S-shaped deformation to keep the bearing gap uniform and reduce wear.

A single motor and speed reducer drive both blade nuts, automating wafer cutting blade changes while cutting size, weight, cost, and manual error.

Brazing a steel carrier plate to a powdered metal spider balances spline hardness, complex geometry, and manufacturing cost.

Separate drive-side and output-side gear paths widen manual transmission ratios while keeping the gearbox compact and lower gears efficient.

Occupant sensory ratings guide automatic transmission shift timing changes to better balance fuel economy, acceleration, and noise-vibration.

A right-angle worm drive barring attachment lets operators rotate engine internals precisely with less force while limiting over-torque damage.

A two-stage clutch transmission bypasses a unity gear stage to cut rolling mill vibration, inertia, and maintenance while preserving torque transfer.

Grooved bearing holders keep drive and driven gear shafts parallel during engagement, reducing meshing error, wear, and noise.

Injected support webs between the hub and gear rim spread steering loads more evenly, reducing tooth wear and enabling higher torque transfer.

A movable intermediate gear axis lets one housing support different transmission ratios while preserving gear engagement and lowering cost.

Radial and angular repositioning of fastening heads lets one assembly station adapt to changing workpiece models without replacing equipment.

A cellulose nanofiber resin gear controls surface roughness and voids to improve slidability, durability, and stable high-torque operation.

Angular travel stops and torque control keep a screw-and-nut drive from jamming, enabling reliable clamping and easier release.

A threaded extendable member and gear drive let one adjustable strut brace unstable structures and lift loads without separate equipment.

A four-gearset, six-coupler layout delivers at least nine forward ratios while limiting transmission complexity and cost.

Multiple injection holes form a carrier ring between hub and toothed wheel, improving steering worm gear rigidity while keeping plastic flow uniform.

A low-adhesion surface structure between the friction ring and synchronizer ring prevents sticking and blocked shifts, especially at low temperatures.

Independent gear trains and electromagnetic clutches let each developing roller stop separately while limiting torque fluctuation and print disturbance.

Dual power paths with opposite one-way clutches enable smooth shifting, regenerative braking, and backward pushing without gear lock.

A 3×3×2 dual-clutch transmission adds more gear ratios for skip shifting while limiting input shaft misalignment and torque interrupt.

An axially movable drive member and intersecting bevel gears keep aircraft accessories running while switching between rotor-only and joint drive.

A clamp-on rotating assembly drives steering wheel spokes without wheel removal, cutting retrofit complexity, adapter use, and install time.

A restrained ring gear and bearings redirect reaction torque in epicyclic gearing, cutting rotational forces and reducing component weight.

A dual-cylinder shaft with an annular space compensates planet carrier deformation to preserve gear mesh and prevent premature tooth wear.

A coaxial metal ring embedded during injection molding restrains plastic gear shrinkage, improving accuracy, strength, and mass production.

A compound gear transmission boosts torque in a compact footwear tensioning system, securing fit under load while enabling easy loosening.

Tilted spline engagement keeps a helical pinion attached under thrust force while allowing single gear replacement without changing the motor.

A sterile adapter with locking and retention features speeds teleoperated instrument changes while keeping the actuator isolated from contamination.

An offset hob creates asymmetric worm wheel pressure angles that curb directional friction torque differences and stabilize steering feel.

A five-planetary, six-shift-element layout delivers up to ten forward gears with wide ratio spread while avoiding group shifts.

Fluid directors and a directing ring guide oil outward into carrier passages, improving bearing lubrication and cooling in epicyclic gears.