Hubs TRIZ Cases

Guide portions and recesses on the sprocket surface direct chain movement toward smaller gears, reducing interference during shifting operations.

Segmented roughing and finishing with specific tools maintains flange planeness within 0.02 mm limits.

Welding connects adjacent sprockets with different inner diameters to a driver profile.

Double-wishbone suspension uses perpendicular universal joints with roller bearings to minimize frictional forces between moving parts.

A wheel hub assembly uses a spring-loaded retainer and hand-maneuverable tab to allow tool-free removal.

A hollow flywheel gyro assembly maintains upright equilibrium when stopped by decoupling from the drive wheel and generating an air envelope.

An undercutless mold shapes polymer around a steel core to prevent corrosion and water ingress without complex tooling.

Rear sprocket recesses engage support arms to transmit rotational force, resolving coupling strength versus weight trade-offs.

A quick release lever uses an axially movable fitting portion to engage or disengage a clutch shaft for independent orientation control.

Axial screw clamping secures small sprockets to the hub body, enabling reduced bottom diameters without compromising structural strength.

Integrating rim, hub, and brake interfaces into a single-piece hub adaptor eliminates separate caps and gaskets, reducing axle width and assembly time.

Nesting a protective tube inside a wheel spindle cavity shields sensors from environmental damage while maintaining internal space efficiency.

Axial offset of multiple ratchet rings reduces rotation before pawl engagement, resolving the trade-off between transition speed and structural complexity.

An actuated decoupling element interrupts power transmission between the hub body and pinion carrier to eliminate pedal kickback during chassis compression.

Segmented mounting isolates the pulsar ring from brake disc thermal expansion, maintaining detection accuracy.

Axle relief aperture allows spoke installation through enclosed flanges, eliminating deformation and reducing assembly labor.

A bicycle hub unit integrates a rotation restriction member with a cable guide structure to secure the axle.

A wheel hub bearing uses a thin radial stiffening positioned at the center line of the radially inner ring seat to strengthen the structure.

Yieldable retainers secure the cap to prevent dirt intrusion into the sensor.

Helical splines guide ratchet members axially to disengage during coasting, eliminating noise and abrasion while maintaining torque transfer.

Positioning protrusions on axle brackets align brake housings to eliminate jig requirements and reduce assembly time.

A bicycle hub sprocket support body uses a porous structure to reduce weight while maintaining strength.

Segmented brake rotors mount to wheel discs via thermally conductive abutments, reducing thermal stress on rim rings while maintaining structural integrity.

Elastic ball bearings deform under load to transmit torque in a lightweight bicycle freewheel, avoiding the weight and cost of steel bearings.

A shield assembly extends over the spindle and final drive gap to guide debris away from the axle seal cavity.

A hub bearing mounting procedure uses segmented cages to reduce weight and complexity while maintaining stiffness.

A smart light switch uses geographic location data to automatically lock its state during Jewish holidays.

Varying outer peripheral stiffness between free rollers minimizes slippage and reduces power loss in omni-directional vehicles.

A wheelchair hub engages three chamfered faces on the wheel axle end portion to eliminate rotational play and ensure a tight mechanical fit.

Segmented spoke assemblies apply radiation weave on the driving side and crossover weave on the coast side to resolve stress distribution contradictions.

Shaped aperture aligns terminal wall without checks, preventing contaminants while maintaining production speed.

Controller associates phase-shifted sensor signals with external direction data to determine wheel rotation without physical alignment keys.

Floating pulser ring on aluminum intermediate ring suppresses thermal expansion effects, maintaining sensor accuracy without enlarging structure.

A propulsion-braking module integrates a liquid cooled electric motor directly within the wheel rim for independent torque control.

Segmented centering units isolate bearings from brake disc thermal stress, enabling adaptable rim mounting without compromising bearing integrity.

A quick release device uses a rotatable sleeve to adjust wrench orientation for secure wheel mounting.

Gear amplification strengthens magnetic field flux and sine wave signals, enabling accurate low-speed detection.

A hub device uses carrier portions to conduct heat axially away from the bearing socket.

Shear pins disconnect taxi drive motors from landing gear wheels when spin-up loads exceed safe limits, preventing structural damage.