Gearing TRIZ Cases

Variable thickness pin support walls disperse stress to reduce weight and volume.

A gearless transmission uses lobed input shafts and connecting rods to transmit torque without meshing teeth.

An eccentric drive element rotates each holder via a toothed wheel, preventing rotational errors that cause uneven coating.

Selective centrifugal roller activation modifies gear change parameters to reduce fuel consumption and pollutant emissions in motorcycle transmissions.

A nested drive device uses concentric shafts and sealing members to separate pressure zones within a compact case.

Segmented anti-rotation guides absorb torque loads, reducing stress on piston rods and housing covers.

Segmented pulley transmission varies gear ratios via interchangeable segments, eliminating ratcheting and slippage under high-speed loads.

A differential gear system distributes driving force between two motors to control angular speeds of output shafts.

A hydraulic tensioner check valve unit uses a crimped plastic ball guide to secure the retainer and spring.

A telescopic actuator uses four nested screw drives to achieve a large extension path from a compact retracted state.

Longitudinal ribs in the guiding sections increase area moment of inertia to reduce vibrations and noise without adding complex metal leaf springs.

Dynamic elastic tensioning absorbs shock loads to prevent over-tensioning and extend toothed belt life.

End cap passages guide ball circulation to reduce impact noise while eliminating complex external introduction devices.

Adjusting contact angle to 30 degrees and groove depth reduces surface pressure under radial and moment loads, extending component lifespan.

Asymmetric arm leverage ratios enable independent heating and pressure nip force control using one spring, reducing part count.

A bending operation system calculates assist information using displacement detectors on linear members.

Segmented rotary and spindle assemblies in a polyamide housing reduce stock requirements while preventing moisture ingress through bonded joints.

A tensioner circlip member deforms elastically to absorb shock loads during piston retraction.

Segmented cam portions with varying radial distances pivot to adjust nip pressure, resolving precision and torque trade-offs.

Offset rolling elements enable different thread pitches without redesign, reducing component variety and manufacturing complexity.

Dual arm members connect guides to prevent deformation, resolving assembly inefficiency from separate component handling.

Separating the coil spring from the worm wheel reduces frictional heat and noise while maintaining braking reliability.

Integrating a resin friction member with a coil spring reduces radial size and assembly labor while maintaining asymmetric damping.

Integrated arrest elements define arm positions under spring and belt forces, resolving the trade-off between adaptability and device complexity.

Rotating the helical spring eliminates friction against the stationary cylindrical ring, preventing heat generation and component wear.

A chain transmission uses links with three pins in different planes to synchronize rotational speeds of sprockets with varying diameters.

Nut-integrated communicating hole enables chamber air flow while preserving housing strength and bearing reliability.

A screw-nut system with rolling elements transmits rotational movement in aircraft flight control devices.

A CVT control routine adjusts primary and secondary pulley forces using a ratio change coefficient for precise speed ratio management.

Metal threaded spindle acts as sensor target for inductive position detection, reducing installation space and production cost.

A control device corrects pulley clamping force using estimated lubricant temperature to maintain optimal friction coefficients.

Steep thread screw drive uses sintered nut to prevent lubricant decomposition at high speeds, extending service life.

A hybrid vehicle uses a belt stepless speed changer to transmit power from a motor positioned opposite the engine across the driving rotary body.

Inclined support body increases belt tension as motor shaft moves away from rack bar, preventing noise and damage.

An elliptical gear transmission replaces servo electronics to drive a postal mail stacking actuator, reducing energy consumption and system complexity.

Spatial sinusoidal grooves and spherical sockets convert reciprocating piston motion to rotary output, reducing kinematic chain length and friction losses.

A lift-up buckle movement device employs a supporting body to rotatably support the drive screw.

A capacitive position sensor assembly uses a reading unit to evaluate signals from passive electrodes along a sheath tube.

Controlling inside flank projection relative to chain pitch minimizes chordal rise distance and reduces meshing noise during sprocket engagement.

Elastic snap and spring fingers in the retainer absorb system vibrations, preventing stripping damage and disengagement of the automotive lamp adjuster.

Radial prestressing forces expand a slotted bearing bush to eliminate backlash and improve positional tolerances.

A one-piece torque-transfer component integrates a sprocket portion and an output flange portion to rotate in unison about a common axis.

Dual motor/generator system drives transmission via independent clutches in hybrid vehicles.

Opposing flexible driveshafts in a drive mechanism cancel external torque, preventing unwanted device rotation during navigation.

A hydraulic control device manages transmission range switching by adjusting electric oil pump speed to supply pressure to the reverse clutch.

Axial extensions replace radial stopper rings to eliminate complex housing machining and reduce manufacturing costs.

Crossed inclined reinforcing ribs near support points improve resin flow uniformity while reducing dimensional errors during injection molding.

A T-shaped plastic guide rail employs a convex sliding surface and stiffening rib to suppress vibrations and noise during endless chain guidance.

A switchable rocker arm assembly uses a planetary gear to rotate a contour surface and shift roller contact points for variable valve lift.