Toothed Gearings TRIZ Cases

Peak motor torque during clutch handoff helps an electric power shift transmission avoid torque interruption and keep output torque stable.

A retractable LiDAR and sliding door expose the sensor only when needed, limiting dust contamination while preserving vehicle detection accuracy.

A sliding door and retractable LiDAR expose the sensor only when needed, limiting dust contamination and preserving vehicle sensing accuracy.

Alternating fixed-end and single-end gear shafts let a linkage gear train maintain smooth, reliable power transmission as shaft distance changes.

Two coupled planetary gear sets deliver counter-rotating outputs and large gear ratios in a compact gearbox for efficient motion transfer.

A planetary wheel end reduction uses dual clutch engagement to switch between torque multiplication and direct transfer for flexible vehicle power delivery.

A multi-link articulated gear transfers high-torque rotation across changing shaft angles and distances without sacrificing response or efficiency.

Opposing stopper and tooth-meshing loads balance impact when a lock gear stops, protecting the speed reducer housing from damage.

Synchronous clutch and variator control lets a twin-countershaft CVT shift modes without empty cycling while maintaining continuous ratio coverage.

Separate oil chambers let the counter gear and hypoid gear use suitable lubricants while preserving motor cooling and preventing oil film breakdown.

Additive rotor torque and subtractive stator reaction let one actuator drive suspension and reflected chassis functions such as anti-dive.

A nested shaft and fixed-gear PTO layout delivers four speed ratios in less space, cutting transmission complexity and fuel use.

Offset gears place the motor rotor and accessory loads in one gearbox layout, saving axial space while keeping propulsor and loads running.

Alternating front and rear ground-contact arrangements help a stair-climbing conveyance clear steps gently while staying stable and avoiding stair damage.

A multi-link articulated gear keeps gear engagement through angle and distance changes, enabling efficient high-torque power transfer with quick response.

Shared output pins replace separate inner and outer pins in a trochoid reduction gear, shrinking diameter while improving meshing and wear control.

A compact multi-input transmission uses shared gears, friction elements, and planetary sets to cut idling losses while keeping gear selection flexible.

A split-gear sensor drive tracks output shaft position accurately while keeping the vehicle gearbox actuator compact and cost-effective.

A cycloidal drive lets small electric motors deliver high stabilizer bar torque, cutting actuator size and cost without losing suspension performance.

A split-gear drive keeps continuous wheel power transmission without CV joints, reducing unsprung mass and improving motor durability.

A main motor and low-inertia sub-motor share steering output to improve response in large vehicles and maintain assist during abnormal operation.

A sleeve-actuated planetary differential adds two selectable gear ratios to improve torque distribution on low-grip heavy-vehicle drives.

An electric machine replaces a clutch in the reversing path to enable compact DHT conversion, torque assist, and energy recuperation.

A spindle-and-gear actuator shifts the hatch along curved paths to widen openings and fit curved roof structures in less space.

A four-shaft in-wheel gear reducer places intermediate shafts above the hub to gain steering space while maintaining a sufficient reduction ratio.

A recessed ball joint and interchangeable portal gears preserve UTV steering geometry while supporting both low-speed torque and high-speed control.

By overlapping the motor with the worm or worm wheel outside the gear casing, this seat actuator cuts size, improves cooling, and reduces vibration.

A two-stage planetary steering gear boosts assist torque while preserving steering speed and feedback for commercial vehicle wheels.

Arc-shaped grooves and bumps plus staged gear reduction raise stepper motor torque while preventing tooth breakage and shaft dislodgement.

Phase-offset rotors on a common shaft smooth torque ripple and lower gear stress, improving electric machine durability and cost.

A threaded spindle-worm wheel joint and crash-engaging gear holder improve seat rail load transfer and force dissipation.

A reversible PTO shaft engages either the planet carrier or output sun gear to deliver 540 or 1000 rpm from one input.

Arc-shaped gear engagement raises deceleration ratio in a compact motor mechanism while preventing tooth interference and preserving smooth meshing.

A reversible quill structure changes shaft drop height without new housings, keeping gear centers and bearing loads consistent.

Two permanent magnet DC motors split the vehicle step load, add self-locking support, and prevent drooping while extending motor life.

A motor-driven box step rotates from stowed to rear, corner, and side positions to improve pickup bed access with the tailgate open or closed.

By disengaging only the downstream clutch and matching HST ratio to vehicle speed, this case reduces shock and speeds drive resumption.

An inclined spindle and meshing gears let a vehicle flap follow an elliptical path, enlarging the passage region and freeing actuator placement.

By overlapping HST input and output gear trains between the pump, motor, and planetary gear set, this case cuts axial HMT length.

A sun-gear and planetary output assembly enables neutral, low, intermediate, and high gear modes to match engine speed with wheel torque.

A bridged dual-motor transmission uses a synthetic housing and motion stops to cut rolling machine weight while keeping shaft alignment stable.

A segmented clutch and shaft layout delivers 24 forward and 24 reverse ratios for agricultural vehicles across varying terrains and loads.

Matching a medium forward gear ratio to reverse speed simplifies forward-reverse switching and reduces operator control effort.

A spring-loaded sun gear and planet carrier arrangement compensates axial play, cuts wear, and simplifies roll stabilizer actuator assembly.

Offset multi-shaft gearing replaces inline planetary limits, adding 8 forward and reverse speeds with easier maintenance and flexible packaging.

Hydrostatic output control matches planetary gear speeds across shift states to widen vehicle speed range with smoother shifting and lower transmission load.

A hubless aircraft fan uses a radially offset motor axis and roller bearings to deliver thrust with lower noise, emissions, and reverser complexity.

A freewheel gear and dual axial flux motors enable gear changes without torque interrupt while reducing harmful energy pulses in EV drivetrains.

A side-by-side gearwheel and coupling layout cuts transmission axial bulk, enabling a lighter casing and lower vehicle energy use.

Dual motors and gear reduction replace belt-driven transmission, improving snow removal efficiency while keeping a self-propelled snow thrower compact.

Using four planetary gearsets and six selective couplers, this layout achieves nine forward speeds and reverse while keeping torque transfer flexible.

Using four planetary gearsets and six selective couplers, this case expands speed ratio range without a single more complex geartrain.

Four planetary gearsets and six selective couplers create nine forward ratios while limiting transmission interconnection and control complexity.

Selective clutch and brake engagement across four planetary gearsets delivers nine forward ratios while containing transmission complexity.

Pre-filling the to-be-engaged clutch with elevated hydraulic pressure shortens shift time while avoiding gear-change disturbance.

Four planetary gearsets and six selective couplers create nine forward ratios while avoiding a more cumbersome transmission configuration.

Mechanical end stops on a threaded sleeve and lifting spindle prevent wedging at travel limits, cutting ropeway wheel lift maintenance.

A graded diaphragm thickness profile reduces thrust-force stress concentration and helps prevent fatigue rupture in strain wave gears under high load torque.

Using hollow rollers with Di/Do ≥ 0.95 lets a strain wave gear wave generator cut Hertz contact stress and reduce raceway hardness demands.

Varying driven-gear tooth width by load angle lowers surface pressure and frictional loss without increasing gear size.

A high-rigidity support ring suppresses plug deformation, enabling larger hollow strain wave gears while maintaining stable meshing under load.

An asymmetric shaft profile widens the wedge-shaped bearing gap to sustain oil supply and load capacity despite planet wheel ovalization.

Elastic members between primary and secondary planet gears balance load and absorb wind-driven shocks, reducing wear in high-ratio drivetrains.

A right-angle gear and ratchet layout repositions wrench rotation so bolts and nuts can be turned where handle swing is limited.

Rigid inner ring gears and nested planetary stages deliver high reduction ratios with lower complexity, cost, and maintenance burden.

A clutch-linked planetary gear mechanism switches ratios for slats and flaps, improving torque-speed matching while cutting motor size and power use.

Guide surfaces move the planet and auxiliary gears without a coil spring, cutting driving load, noise, and power use in image forming transmission.

A circumferential heater warms grease around the wave generator to cut cold-start torque without overheating lubrication.

Shared gear trains and a hollow-shaft layout add more speed stages without extra length or weight, while cutting stirring resistance and drag loss.

A selector cam and output assemblies let one motor drive linear and rotary surgical end effectors with fewer adapter parts and less assembly labor.

A rotating switching unit combines friction synchronization with toothed and force-fit coupling to cut transmission cost and package space.

A pivotable worm shaft bearing cuts coupling load, wear, and vibration noise in electromechanical power steering gearing.

Closed-loop clutch control with shaft-speed feedback manages double-transition shifts while limiting clutch overheating and strain.

Multiple conjugate-curve tooth contacts spread load across cylindrical gears, cutting sliding, wear, and oil temperature rise under heavy loads.

Parallel belt drives and reverse belt routing enable a lighter epicyclic wheel transmission that handles high torque with less wear, noise, and maintenance.

A movable wheel bearing shifts the gear engagement zone to maintain transmission ratio while lowering mesh forces and mechanical stress.

Controlled ring gear rotation in a hypocycloidal engine varies compression and displacement while cutting rod-side friction losses.

Pocketed carrier walls and a cover-mounted planet stage improve positioning, rolling conditions, and torque capacity in compact reduction gears.

A screw-driven support and elastic member stabilize lawnmower cutting height by suppressing vibration-induced rattling and inadvertent drop.

A single retaining pin and carrier seat lock the planet pin against escape, improving gearset stability while simplifying service.

A four-planetary, five-clutch layout delivers eight forward speeds and reverse while balancing ratio versatility, packaging, and shift responsiveness.

Larger radial flexing for two tooth sets with different counts improves meshing, balances bearing-ball loads, and extends wave bearing life.

A transmission element adapts to measured eccentric cam geometry to minimize switchover clearance and loss angle in vehicle seat adjustment fittings.

Segmenting housing assembly from connection member fixation reduces weight and cost while maintaining reliable suspension mounting.

Identical needle bearing configurations for eccentric shafts and sliding members reduce energy loss, vibration, and noise in oscillating planetary gears.

Merging the reverse gear path into the first driving shaft eliminates a dedicated reverse shaft, reducing total part count and axial length.

A toothed-wheel variable-speed transmission uses parallel powershift clutches and multiple gearwheel planes to enable continuous sequential shifting.

An electrically variable transmission uses three planetary gear sets and two motor generators to split power flow between mechanical and electrical paths.

A differential bevel gear speed reducer uses three identical pinion gears to achieve efficient rotation without profile shifting.

Multi-path torque split gearbox reduces weight and volume by segmenting power transmission across nested, independent drive train modules.

Matching flange diameters prevent roller bending and thread slip, boosting torque transmission in planetary reducers.

A lorry transmission module uses a bypass clutch to switch gear ratios without interrupting torque transfer.

Nested planetary gearsets share components to reduce device complexity while maintaining high versatility across multiple speed ratios.