Toothed Gearings TRIZ Cases
- Gearbox Shift Lockout Using Rotation Sensor Feedback
A Hall effect sensor and microcontroller block shift solenoid activation during gearbox rotation, preventing damage without hydrostatic clutches.
- Paired Eccentric Gear Mechanism for Balanced Power Transmission
Counter-rotating eccentric gear pairs balance oscillation and simplify power transmission by removing beams, rods, and counterweights.
- Vehicle Seat Swivel Layout With Integrated Brake and Monopost
A vertically stacked motor, reduction gear, and brake let a vehicle seat swivel smoothly, stop accurately, and save under-seat floor space.
- Vehicle Flap Spindle Drive with Nested Planetary Gearing
A nested two-stage planetary gear with one carrier shrinks vehicle flap spindle drives while simplifying assembly and torque transmission.
- Axial Flux Motor Gearbox for Seamless Two-Speed Shifting
A freewheel gear and dual axial flux motors keep power flowing through two-speed shifts, reducing torque interrupts and energy pulses.
- Three-Shaft Sequential Gearbox With Symmetric Dog Clutches
Symmetric axial dog clutches and a modular final drive cut wear and speed maintenance in a compact three-shaft sequential gearbox.
- Epicyclic Gear Actuator With Direct Output Angle Sensing
Direct output angle sensing on a connecting rod avoids reduction-ratio error and cuts parasitic forces in compact vehicle actuators.
- Steering Force Actuator With Elastic Carrier Pin Backlash Control
Elastic carrier pin preloading cuts planetary gear backlash, transmission error, noise, and jamming in steer-by-wire steering actuators.
- Spline-Coupled Motor Transmission Shaft Positioning Without Recess Machining
A spline coupling and snap ring position the motor and drive shafts accurately without precision recess machining, cutting cost and easing assembly.
- Drum Brake Electronic Parking Brake With Helical Gears for Low Noise
Helical gears replace planetary gears in a drum brake parking brake to cut noise and allow inclined shafts for easier packaging.
- Steer-by-Wire Sensor Shaft Layout for Accurate Road Wheel Angle
A sensor shaft linked to the road wheel improves angle measurement accuracy in steer-by-wire steering, preserving feel and stability over time.
- Coaxial Drive Shaft Oil Channel Layout for Gear Lubrication
A shared oil channel in coaxial drive and transmission shafts shortens lubrication paths and improves cooling for the motor and counter gears.
- Differential Seat Actuator Module for Curved Rail Movement
A differential worm-and-planet gear actuator enables simultaneous seat motion on curved rails with self-locking, quiet operation, and fewer parts.
- Dual-Reducer Steering Assembly for Torque Ripple Reduction
Offset mounting angles on dual reducers prevent meshing frequency overlap, cutting steering torque ripple and driver discomfort.
- Foldable Steering Wheel Worm-Drive Locking for Precise Rim Positioning
A worm-drive slider and link mechanism folds and locks the steering wheel rim with precise angle control, reducing shake and motor complexity.
- Drive Unit Lubricant Passage Layout for Lower Motor Loss
A lower-rear through-hole layout guides lubricant into the gear chamber, limiting backflow and reducing rotor drive loss.
- Planetary Drive Unit With Spring-Engaged Clutches
Spring urging and centrifugal clutching replace hydraulic actuation in a planetary drive unit, cutting energy use during gear shifting.
- Dual-Stage Transmission Control for Smooth On-the-Move Gear Shifts
Controller-led clutch release and speed matching let the auxiliary gearbox shift during travel while reducing shock and preserving work efficiency.
- Transmission Motor Shaft Coupling With Snap Ring Positioning
A snap ring axially positions the motor and drive shafts, avoiding precise spline-hole bottom machining while cutting cost and assembly steps.
- Dog Clutch Braking Mechanism for Smooth Gear Shifting
Brake plates actuated only during sleeve transition synchronize gear speeds, cutting torque shock, clashing noise, and wear.
- AMT Crawler Gear Engagement at Nonzero Countershaft Speed
Applying the gearbox brake to reach a nonzero countershaft speed enables smoother crawler gear engagement with less noise and jerk.
- Wheel Hub Travel Drive Oil Reservoir for Stable Bearing Lubrication
An internal oil reservoir plate and collar keep bearing lubrication stable in a wheel travel drive despite centrifugal oil displacement.
- Vehicle Opening Drive Gearbox Layout for Tight Mounting Space
A two-stage gearbox shifts the output axis closer to the mounting side, cutting installation space for vehicle opening mechanisms.