Elevators TRIZ Cases

A solid elevator guide rail uses segmented flange portions attached to a standard I-shaped profile for precise car and counterweight guidance.

A multi-cabin elevator safety device initiates a deceleration curve to monitor cab speed and position.

Automated credential scanning resolves unauthorized floor access by verifying permissions before elevator entry.

A synthetic fiber cable uses spaced outer strands to transfer radial pressure inward, enabling effective traction force transmission across layers.

Pivoting clamp arms enable automatic centering on guide rails despite position deviations.

Tapping the safety circuit at a midpoint allows monitoring of car and landing door contacts, preventing movement when bypassed or malfunctioning.

Controller switches elevator drive to internal power source when external supply fails, enabling controlled car stop.

A passenger customization system detects individual attributes to configure elevator components.

A computer-controlled elevator scheduling system processes remote user calls to automatically select pick-up and drop-off floors.

A cabin lifting apparatus uses redundant drive cables and a mechanical coupling system to ensure safe vertical transport.

Counterbalancing magnets reduce guide rail wear and friction while maintaining reliable emergency braking performance.

Real-time lobby video guides users to assigned elevators, reducing walking time and system complexity in busy lobbies.

Phase-offset sprockets cancel sinusoidal pulsations in vertical lift conveyors, stabilizing carriage motion across varying payloads.

Fuses elevator door sensor outputs to identify unexpected behavior patterns, preventing premature nudging mode activation.

Spring elements detect vertical drive unit movement to switch off the motor, preventing unauthorized elevator car lifting.

Dynamic occupied area settings based on speed and direction resolve the contradiction between collision avoidance and the number of serviceable floors.

Integrating differential speed data from two independent sensors yields a cumulative error metric that detects deviations before failure occurs.

Statistical analysis of elevator car height data determines precise landing positions, reducing system complexity and hardware costs.

Electronic RPM sensors replace centrifugal masses to eliminate acceleration-dependent delays, enabling instantaneous braking activation.

Merges the counterweight end termination with the machine frame structure, eliminating separate brackets and reducing required hoistway width.

An elevator control unit estimates unbalance torque via brake release timing and velocity signals, reducing calculation load while maintaining responsiveness.

An electronic safety system replaces mechanical switches with pulse counting to reduce maintenance frequency and improve reliability.

A control system manages elevator calls from machine passengers using real-time load data to determine acceptance.

A detachable detection section activates a secondary controller to manage the traction machine brake, reducing configuration complexity for emergency stops.

Segmented stator beams with ferromagnetic poles reduce heavy linear motor weight while maintaining force in high-rise elevators.

A car allocation acquisition unit assigns passengers to elevator cars based on in-car positions and congestion levels.

Simulating an open door state cuts motor power, moving the car by unbalanced torque to shorten test time.

A leaf damper with viscoelastic layers dissipates vibration energy, preventing secondary portion deformation and maintaining consistent air gap widths.

Safety PLC monitors elevator switch states via magnetic sensors to detect faults.

Resilient arms attach optical tape clips to hoistway headers, compensating for building compression and uneven floor levels during elevator positioning.

A segmented control unit coordinates simultaneous car movement in shared shafts to resolve throughput versus complexity trade-offs.

Detecting tensioning sheave displacement during suspending body breakage activates safety devices, shortening buffering strokes and saving hoistway space.

Segmented electrical buses with rectifiers and battery backups maintain reliable power supply across multiple elevator cars in a single hoistway.

Optical projection replaces bulky physical panels, enabling customizable user interaction without increasing system volume.

Cantilever springs bias a floating elevator safety brake laterally, compensating for misalignment and asymmetric loading while maintaining strong braking force.

A construction elevator arrangement adapts its hoistway door orientation to support distinct operational phases.

An elevator cooling system eliminates filter maintenance by using airflow dynamics to separate foreign matter from intake air.

Vertically offset contact surfaces distribute impact stress across multiple elevator car areas, reducing deformation and allowing thinner materials.

Carbon nanotube overlay layers resolve fire retardancy versus thermal performance contradictions in elevator belts.

Automated pressure sensing compares real-time hoistway data against benchmarks to identify door system faults, eliminating manual inspection time.

Segmented backup modules reduce maintenance time and electric shock risks during elevator power faults.

A retractable elevator stop pivots its impact plate to reduce lateral profile.

A hoist and lever device lifts and aligns guide rails, reducing manual handling time in high-rise shafts.

Segmented rotating support accommodates elevator shaft settling without increasing guide rail stress or weight.

Rotatable hitch plate couples suspension media to existing frames, eliminating through-hole requirements during modernization.

An orientable cab floor tilts to maintain perpendicularity against resultant acceleration forces, ensuring passenger comfort during complex travel paths.

A passenger guiding system directs riders to designated waiting zones and assigns elevator cars based on spacing rules.

External computing device monitors elevator drive operational data to determine and transmit valid parameter updates for auto-tuning.

Segmented C-shaped supports and an enveloping housing reduce elevator car weight while maintaining structural strength for ropeless propulsion.

Segmented springs adjust electrical and mechanical switching speeds independently, resolving precision trade-offs.