Elevators TRIZ Cases

Segmented elevator compartments with dynamic door timing balance loading efficiency against evacuation speed during building emergencies.

Dynamic spring reaction force prevents rail stopper movement during hoisting machine braking while enabling rapid activation during rope breakage.

In-situ servicing device restores worn elevator belt geometry and traction via jacket application, avoiding premature replacement.

A roof position determination unit signals when an elevator car reaches a landing level for maintenance access.

A personal mobile terminal detects elevator arrival by monitoring changes in received wireless signal strength from car-mounted modules.

Integrated sensors monitor elevator speed to resolve the contradiction between high reliability and low hardware complexity.

Dynamic preference ordering reduces lobby congestion by directing passengers to the closest available shuttle elevator based on real-time arrival data.

A compact elevator drive machine positions motor and traction modules side by side with parallel axes to enable efficient space utilization.

Laser detection identifies floor-to-landing drops exceeding thresholds, activating indicators to prevent tripping hazards during elevator operation.

A movable flap system adjusts position to cover free space between the traveling assembly and shaft wall, ensuring operator safety during maintenance.

Segmented stator sections with permanent magnets enable lateral transfer, reducing mechanical complexity compared to traditional rope-based systems.

A remote hall call system compares elevator moving time with passenger walking time to determine standby positioning.

Merging interpolation functions into one device reduces system complexity and installation space while maintaining reliable position determination.

An actuation device rotates a reset lever to drive protrusions on a trigger member, resolving the contradiction between safety reliability and operational ease.

A switchable testing relay connects elevator safety sensors to a dedicated test circuit for operability checks.

Replacing mechanical cams with sensors eliminates noise while maintaining door synchronization in intersecting shafts.

A shaft hoisting overwind brake device uses fiber-reinforced plastic plates deformed by a plow to absorb kinetic energy during conveyance travel.

A magnetically actuated switch enables authorized elevator access without visible mechanical keyholes, reducing vandalism susceptibility.

Composite concrete guide rails reduce weight and cost while maintaining mechanical strength through localized steel reinforcement.

A flexible connection between the coupling element and runner allows relative movement within the elevator shaft guide system.

A compressible connecting rod with a spring mechanism translates activation signals to an articulated lever in lift emergency stop devices.

Embedded magnets in a rotating roller enable precise speed detection via magnetic field sensing, replacing complex mechanical governors.

A hybrid elevator safety circuit uses semiconductor switches to bridge door contacts, reducing mechanical wear.

Elevator control system detects duplicate service requests from a single user to prevent redundant car assignments.

A rear-car assignment-candidate exclusion mechanism prevents passenger misassignment in multi-car elevator hoistways.

Non-magnetic spacers define consistent air gaps in the magnet assembly, compensating for manufacturing variations to stabilize normal force generation.

A digital imaging system measures elevator shaft bending and platform alignment by analyzing a vertically directed collimated light beam.

Wireless bridges replace heavy cables between elevator cars and drives, reducing weight and power consumption.

Offset orifices in extra-flat plates force conical screws into position, resolving the trade-off between alignment precision and system complexity.

A detachable elevator panel uses magnetic attachment and a separation member to enable secure removal.

A system predicts passenger arrival time using walking speed data to allocate elevator cars.

A battery test module applies a defined load to an emergency power supply battery and measures voltage drop across the DC circuit.

Flyweight position member offsets the initial rest position to prevent false activation from passenger-induced vertical oscillations.

Tensioning a tether pulls the door open against spring force, avoiding complex robotic arms.

Dynamic mechanical barriers block elevator cars during rail misalignment to prevent derailment while retracting for normal operation.

Building acceleration sensors feed a damping model that predicts rope sway amplitude, preventing dangerous resonance while maintaining continuous service.

Processor decrypts the remote monitoring function using a key from the server to prevent unintended erasure during communication disconnection.

Timestamping safety circuit events enables early detection of maintenance needs, reducing operational downtime and improving elevator availability.

A telescoping stabilizing mechanism with a retractable guide prevents sway and entanglement of suspended magnetic tape in elevator hoistways.

Drive electronics monitor elevator car speed to prevent passenger-induced oscillations.

Movable 2D code bands enable continuous position tracking, correcting building subsidence errors.

A controller initiates brake cycling when the elevator car arrives near a landing to reduce car sag.

A dynamic leveling control module calculates slowdown distances using position encoder signals from a fixed belt.

Displaceable deflecting elements adapt module width to narrow shafts, preventing diagonal tension and twisting of support means.

A safety controller reconfigures its monitoring architecture to exclude failed components.

Integrating the car frame as a lifting platform reduces hoistway size requirements and installation complexity.