Elevators TRIZ Cases

A closed-loop traction means suspends elevator cars on a carrier using drive and guide rollers to enable adjustable inter-cabin spacing.

Elevator control systems adjust lighting and travel speed based on detected passenger states.

Composite ropes route through angled diverting wheels, reducing rope mass and structural complexity in high-lift elevators.

Angled roller wheels reduce vibration and conserve space by constraining horizontal movement in elevator counterweight systems.

A braking roller slides on a bronze fitting and harder pressure body material to generate consistent friction conditions.

A beam climber brake condition monitoring system detects brake health by comparing actual deceleration rates against known norms.

A sensing arrangement detects radial rope displacement via a defined gap between the member and wheel surface.

Distinct guide sounds from dedicated generators replace mixed audio messages, resolving voice interference in crowded elevator landings.

A mobile storage element transmits control data packets to elevator terminals using a near-field radio link for direct software updates.

Position-dependent overspeed thresholds optimize braking timing, reducing hoistway volume while maintaining reliable collision speed limits.

An elevator circuit applies an AC voltage signal to monitor switch states and prevent electrical corrosion.

Floor-specific threshold profiles enable precise elevator performance monitoring through dynamic sensor data analysis.

Replacing long suspension ropes with self-propelled friction wheels eliminates mass, sag, and sway in ultra-high rise elevator systems.

Integrating car rope fastening into the machine base reduces installation time and cost without enlarging the hoistway.

Wire rope spring elements elastically deform to dampen impulsive forces, protecting ammunition elevators from gunfire damage.

Rack and gear transmission amplifies limited trigger force for stable safety device actuation.

Monolithic wedge housing eliminates welded joints to reduce manufacturing complexity while maintaining structural stiffness and rope locking security.

Integrates hall and car weight data via judgment unit to resolve overcrowding trade-offs while managing device complexity.

A control and interface device generates elevator signals from building door activity.

Multi-wedge elevator belt termination deforms wedges to increase clamping force, resolving variable load distribution and slippage risks.

Single confirmation button merges floor selection with door control to reduce panel complexity while preventing simultaneous door opening.

Continuous monitoring of guide rail conditions identifies maintenance regions and prevents vibrations that degrade ride quality.

Portable terminal detector reads unique keys near elevator doors to trigger automatic floor selection.

A switching device selects operation control signals to drive the motor relay when the brake control device fails, ensuring safe evacuation.

A safety control unit verifies elevator car speed data by comparing continuous and zone measurements across two independent channels.

Cable and lever systems transmit force to reposition blocking members, reducing manual effort for maintenance resets.

Autonomous mobile robot acquires elevator list information to determine ride eligibility and navigate floors while managing passenger safety.

A control device calculates speed-dependent loss torque to improve feedforward compensation accuracy.

A combined acceleration sensor and optical distance device capture elevator car movement data to generate precise travel curves for operational monitoring.

Coordination service identification unit detects compatible services based on definition information to enable appropriate user interactions.

Segmenting windings across distinct stator teeth prevents accidental unwinding and minimizes angle detection errors caused by misalignment.

Modular support beams anchor into edge structures, enabling quick installation and repositioning of heavy loads without complex guide rails.

Asymmetric suspension geometry cancels torque components, reducing guide shoe wear and vibration.

A touch-sensitive destination call device presents floor options on a display to enable rapid user selection.

Dynamic power profiles balance energy savings with reactivation speed by adjusting component shutdown based on real-time call activity.

Car-mounted sensors detect rope vibrations to identify wire breaks, eliminating complex multi-sheave wiring.

Dynamic counterbalance adjusts mass position to resolve assembly time losses while recovering potential energy via power generation.

Curved brake element converts relative motion into automatic engagement, reducing device complexity while maintaining braking reliability.

Segmented buckling blocks and turnover struts resolve socketing instability to prevent derailment during high-speed elevator operation.

A controller measures electrical resistance of conductive wire rope strands to determine internal wear and structural integrity.

Portable elevator inspection apparatus uses a separate sensor package and commercial computing device to collect acceleration, speed, and door timing data.

Control device assigns stop floors to operational cages, enabling continuous passenger transport despite cage failures.

Pyroelectric infrared sensors detect approaching persons to reopen elevator doors, avoiding expensive light curtains and reducing false triggers.

A magnetic proximity switch detects elevator car door position via vertical opposition to a target on the door hanger.

A monitoring device detects the power supplying condition of two series switches to control elevator drive activation.

A stairlift armrest uses an angular sensor and latch to detect position and lock the seat component securely.

A governor encoder detects maintenance worker presence in the elevator car to manage mode switching.

An elastic intermediate part distributes pressure evenly across elevator ropes, preventing damage while maintaining holding capacity.

A sensor network master unit determines node identity by comparing measured operating parameters against stored reference values.