Hubs TRIZ Cases

An integrated plastic cover replaces metal and rubber seal parts in a wheel hub assembly to cut weight and cost while maintaining a fluid-tight seal.

Heated inserts compress and cure tire support components to raise non-pneumatic spoke load capacity and durability.

An added 8-10 tooth cog on the outer side of the cassette breaks the 11-tooth limit, expands gear range, and avoids chainring replacement.

Heated insert channels and dual actuators compress and cure tire support structures, boosting non-pneumatic tire load capacity and durability.

Rubber caps over through bolt holes block dirt and water ingress in wheel motor bearing arrangements without increasing wheel packaging space.

Gas-liquid shock absorbers and a rigid footrest frame cut wheel vibration on uneven surfaces while preserving turning control and rider safety.

A cam-based wheel axle uses a calibrated nut and lever stop to enable one-handed release while preserving stiffness and reducing fatigue and sticking.

A pawl-ratchet freecoaster hub enables external slack adjustment without disassembly while reducing side loads that damage bearings.

A plastic load-bearing wheel with a metal reinforcement body and replaceable tyre portions cuts breakage-related replacement waste and maintenance cost.

A metal barrel and CFRP face cut wheel mass while preserving impact resistance, stiffness, and corrosion-safe joining at the interface.

Slanted arcuate blades use landing airflow to spin the wheel forward and channel cooling air to brake discs, reducing tire smoke and skidding.

Preassembled bearings, seal, and nut retention simplify wheel end installation, reduce assembly damage, and help block contaminant intrusion.

A recessed wheel-hub coupling lets an e-bike drive unit power the wheel without frame mounts, reducing bulk while preserving disc brake compatibility.

Segmented tooth rows let a quick-release arm slide a short distance for handle repositioning while maintaining strong engagement and easier operation.

A biasing lock device lets the smallest rear sprocket slide into place more easily while preserving wide gear range and secure hub engagement.

Placing the outer-ring fixing bolt inside the brake disk cylinder reduces axial size, keeps the motor within wheel space, and avoids suspension interference.

Drop-shaped openings and self-retaining spacers simplify heat shield installation while preventing wheel rim contact and preserving thermal protection.

A stepped hollow rear hub axle fits batteries and sensors of different sizes, enabling wireless communication without added wire routing.

Integrated wheel sensors block fastener rotation and wirelessly flag heat or vibration linked to nut loosening before wheel loss.

A two-stage decelerator nests the first stage in the motor shaft to achieve high reduction ratio without increasing in-wheel system width.

A snap-fit wheel cover secures the rear drive wheel without screws, preventing loosening, cover damage, and dirt entry into the transmission.

Segmented ratchet teeth, grooves, and curved surfaces improve hub ring meshing, cut wear, and raise transmission efficiency.

Rotatable support units absorb belt pretension outside the frame, simplifying assembly and reducing pedal kickback from suspension travel.

A two-sleeve hub with freewheels and spring-biased rock levers cuts weight and assembly complexity while allowing free backward wheel rotation.

A clamped circular spring ring centers the brake drum on the wheel hub, cutting assembly effort and braking vibration from eccentric rotation.

An elastomeric wheel seal deflects pressurized water while draining condensate, protecting bearings from corrosion and grease loss.

Plastic-formed monoblock tube sections replace weak welded spline joints, improving torque transfer, stress distribution, and torsional fatigue resistance.

Complementary radial grooves and through slots let braking powder fall away by gravity, keeping the brake disc clean and axially free.

A bearing-coupled hub with multiple bolt patterns lets a wheel rotate independently when brakes lock or axles fail, so immobile vehicles can be moved.

Form-fitting surface profiles replace boreholes in fiber-composite wheel hubs, raising torque capacity while reducing stress and damage risk.

Axle-coaxial mounting and a rigid linkage keep rear derailleur positioning accurate despite frame tolerances, impacts, and higher sprocket loads.

Flexible ribs between a sprocket cassette and hub convert torque into angular displacement for accurate bicycle power measurement.

A bicycle freewheel hub uses a magnet arrangement to hold clutch rings in an engaged position for torque transmission.

An integrated wheel end uses a clutch ring abutment feature to limit axial movement, preventing shift fork fracture from spline misalignment forces.

Replacing lathe turning with cold forging for wheel bearing flanges reduces processing steps while maintaining mounting accuracy.

Pivot-mounted guide members act as ramps on the hand truck wheel assembly, allowing users to traverse obstacles while maintaining load stability.

A bicycle transmission device uses convex keys and concave grooves to engage a freehub body for secure force transfer.

A spring-biased L-shaped retainer pin integrates a handle piece into the bushing assembly to release wheels from axles without external tools.

A freecoaster hub clutch uses distributed resistance members to stabilize power transmission.

A bicycle hub assembly uses a large axle bore and specific torque profile to transmit rotational force efficiently.

Merging the hub body and cassette eliminates the separate freewheel, reducing weight and internal friction for e-bikes.

A bicycle hub uses a sprag clutch to transfer torque immediately.

Segmented elastic portions isolate thermal creep from the detachment mechanism, preserving load security under high temperatures.

Threaded engagement replaces discrete splines to resolve the trade-off between adjustment precision and structural complexity in bicycle hub assemblies.

A bicycle wheel quick release assembly uses a cam profile on a rotatable handle to alter head spacing for single-handed operation.

Segmenting the bearing to mount a strain sensor on a dedicated member resolves low sensitivity in high-rigidity components while reducing mass-production costs.

Non-circular axle seating nests eliminate complex clamping mechanisms, ensuring stable mounting without increasing device complexity.

A wheel loosening sensor uses a permanently sealed housing and disc spring to connect electrical terminals for signal transmission.