Toothed Gearings TRIZ Cases

Coaxial input shafts and a hollow shaft allow traction-assisted switching in the range group, eliminating noticeable interruptions.

Reducing initial clutch torque to zero before engaging a support gear overlaps disengagement with engagement, shortening total shifting time.

A ball screw preload structure uses a nested sleeve and tubular member to anchor bearing elements securely within the nut assembly.

Ten forward gears use four planetary gear mechanisms and seven engagement devices to minimize simultaneous clutch activation.

A slide mechanism uses extended panels on primary and secondary guide rails to enclose the moving elements.

Stationary oil passages supply hydraulic actuators for smooth clutch engagement in speed change transmissions.

A variable-speed speed-up mechanism uses a clutch device to block rotor rotation during motor trips.

Radial idle shafts disperse shifting gears around the main axis, reducing transmission length and weight while maintaining nine forward speeds.

A rockable intermediate gear transmission mechanism shifts drive paths by pivoting a rotation shaft between engagement positions.

Electronic control unit detects fail-safe valve failures by monitoring simultaneous clutch engagement states while prohibiting travel through affected paths.

A deceleration device uses a stopper member with contacts to constrain second gear rotation for flexible speed settings.

A hybrid drive gear unit shifts range groups without interrupting tractive force by using an electric engine to support torque via a countershaft.

Six coplanar gear sets reduce transmission weight and size while maintaining required gear ratios through synchronized engagement.

A composite planetary transmission section synthesizes engine and electric motor drive forces through a unified rotational architecture.

Axially shiftable coupling sleeves eliminate the main gearbox reverse gear, reducing weight and fuel consumption while maintaining vehicle versatility.

A four planetary gear transmission system manages multiple torque paths to deliver eight forward speed ratios.

Adapter assembly with drive screw and cam assemblies converts rotational motion to linear movement for surgical devices.

A transmission unit uses parallel and eccentric driving shafts to reduce selection device size.

Open-loop control determines differential speed profiles to resolve asynchronous gear engagement delays during ratio transitions.

A geared transmission unit uses coaxially disposed pinion gears on a carrier to achieve high speed ratios.

Dual supports minimize male-threaded rod deflection while detachable knobs enable adjustable travel ranges and improved engagement precision.

Five shift elements control nine forward gears in a planetary design, minimizing internal losses by keeping three elements closed during each gear step.

Pericyclic motion converters wobble at angles to cancel gear mesh loads, reducing transmission weight and dimensional footprint for rotorcraft applications.

An integrated power transmission member merges the rotary shaft with the planetary gear holding portion to support freely turnable gears.

Four planetary gear sets and seven control elements achieve ten forward speeds while reducing transmission length, weight, and production cost.

Segmented braking collar engages pinion teeth to inhibit rotation during vehicle crashes, maintaining seat stability under impact loads.

An eight-speed transmission uses segmented planetary gear sets to provide a wide speed ratio span.

Segmented yoke with hard contact surface and elastic rear support maintains constant clearance between rack bar and pinion gear, reducing wear-induced noise.

Axial pinion displacement via spring cushioning absorbs varying forces, preventing gear jamming while lowering production costs.

A compact continuously variable transmission uses a variable cam to adjust rotation radius and manage bidirectional torque transfer.

A hybrid vehicle electronic control unit manages system voltage during shift range transitions to maintain stable inverterless traveling.

Integrating four planetary gear devices into a single system achieves ten forward stages while reducing structural complexity and weight.

Magnetic brake means resist the rotation of a rotary bearing driven by an auxiliary rod thread, reducing braking torque and preventing mechanical blockages.

A rolling element screw device uses a toothed belt mechanism to maintain constant axial movement of the retainer ring.

Merging four planetary gear sets reduces component weight and material costs while maintaining ten forward gear ratios for improved fuel efficiency.

A nested gear transmission device uses a concentric double-wall internal gear to confine meshing noise and vibration within the assembly.

Integrating anti-friction bearings into the gear wheel reduces axial dimensions and simplifies mounting for miniaturized robotics applications.

A friction member brakes the ring gear of a common use planetary gear device to maintain torque during shifting, preventing vehicle pullback.

Segmented transmission stages enable single-clutch swaps, reducing multi-stage shift complexity and improving operational comfort.

A ball nut design with a variable center radius in the inner peripheral screw groove distributes mechanical load across multiple balls.

Front-facing concentric gear rings eliminate rear tooth offsets, reducing production complexity and friction losses in compact mechanisms.

Four planetary gear sets merge into a compact assembly, resolving the trade-off between high gear ratio versatility and transmission weight.

Integrating ball screw shaft inside hollow motor shaft eliminates coupling and support bearings, reducing overall actuator weight and length.

Nested planet gear mechanisms reduce device complexity while maintaining gear train strength for compact power performance.

A transmission control method engages specific torque mechanisms to lock gear members and prevent input torque transfer during cold starts.

Controller uses stop type detection to engage neutral idle only at traffic lights, eliminating delay timers that cause drivability issues at stop signs.

A vehicle gear shift controller adjusts upshift timing to protect friction materials from thermal damage.