Elevators TRIZ Cases

A safety brake uses a parallelogram guide to move the braking element against the rail for effective stopping.

A position adjusting device uses threaded rods and matching holes to align vertical and horizontal elevator frame members.

An interactive touch-based car operating panel system extends around the elevator passenger compartment to receive destination input from any location.

Inverting the connector above engagement members replaces pushing force with pulling actuation, reducing device complexity and bulk.

Merges guide rail bracket and fishplate into single components, reducing installation complexity and component count.

Continuous acceleration run patterns minimize elevator landing time and suppress car vibrations during deceleration.

A group control system prepares reference trajectories for elevator cars to forecast positions and adjust speeds.

Electronic control facility prevents user mode entry until installation steps complete, ensuring safety verification.

A car holding position monitoring unit detects elevator car displacement during stationary periods using trigger signals from reference systems.

Varying arm cross sections in elevator machine frames disrupt sound radiation patterns, resolving the trade-off between structural integrity and audible noise.

Magnetic guidance replaces mechanical gibs in elevator safety actuators, eliminating wear and vibration during high-speed vertical movement.

Low-mass lever arms in this elevator clamping jaw reduce activation delay while maintaining constant clamping force for high-speed applications.

Segmented frame with adjustable corner members fits varying elevator hoistway dimensions without custom fabrication.

Sound analysis circuit detects elevator characteristic changes over time to trigger maintenance notifications.

Cross-linked polyurethane resin coating on elevator ropes maintains stable friction across varying sliding velocities.

Nesting fluid flow paths within the double-wall structure cools electronic visual displays while minimizing noise, condensation, and maintenance complexity.

Intermediary guide rollers apply firm pressure to overcome elastic straightening, enabling reliable rope alignment on cambered wheels without tension.

Dynamic elevator car panels hide floor call buttons at destination floors, resolving passenger confusion and improving transport capacity.

An electromagnetic safety trigger moves a magnetic brake to engage an elevator guide rail using controlled magnetic force.

Dynamic sensor switching resolves the contradiction between detection precision and false positive rates in elevator safety systems.

A lift cage regulating device adapts amplifier gain based on vertical speed to suppress mechanical oscillations during travel.

Encoder measures travel distance to calculate suspension member elongation, resolving precision challenges in small-scale rope stretch monitoring.

A pivoting output drive shaft engages a lift main drive screw via a gear box, eliminating costly tower access panel modifications.

Eccentric rotation of movement elements shifts rail brackets laterally, resolving installation complexity while maintaining alignment precision.

Pressure sensors detect shaft air changes to determine door states, eliminating mechanical stress on components and enabling external data access.

A detector identifies intrusion into the elevator hoistway to delimit a safe area for service drives.

Battery-powered monitoring unit detects shaft door state changes during power outages to enable safe elevator restart.

Monitor controller automatically displays hall camera images and floor data, eliminating manual switching delays during fire evacuations.

Segmented elevator speed indicators use color changes in the display bar to reveal operation mode, resolving passenger uncertainty during high-speed travel.

An elevator information system displays cabin air quality and usage history to passengers before entry.

Segmented lift modules with enclosed shafts resolve the conflict between quick erection and user protection.

An elastomer coating over woven fabric creates a textured exterior for improved friction while protecting internal steel wires from wear.

A portable user interface transfers maintenance data between elevator control units and database servers.

Integrated arresting devices block downward movement via mechanical engagement, resolving the trade-off between safety reliability and device complexity.

Adjusting electrical pulse duration based on elevator car position to release the brake efficiently.

Electronic safety actuators record operational data to detect wear, eliminating manual inspection delays.

Sensors detect passenger presence to cancel destination calls, bypassing empty floors and reducing energy waste.

Time-of-flight sensors measure distance to register passengers, avoiding complex image analysis and reducing computing power requirements.

Location verification service issues temporary access tokens for touchless elevator calls, reducing disease transmission risk from shared physical panels.

Placing the tractor below the guide pulley shifts most lift car weight away from the traction wheel, extending service life.

Controller logic blocks elevator travel during maintenance by detecting presence in the hoistway, resolving safety complexity through segmentation.

High-friction plate clamps guide rail base to prevent displacement during seismic events while controlling installation costs.

Elevator system receives building hints to forecast passenger flow, guiding users to less congested cars and reducing lobby congestion.

Permanent magnet linear drive system moves elevator car along inclined interaction surfaces.

Replacing electromechanical switches with sensors eliminates contact flashovers and corrosion while enabling real-time supervision of door locking reliability.

A grounding roller provides a permanent conductive path between the elevator car and guide rail to eliminate static buildup.

A presentation device generates air flow images from ventilation equipment data to visualize cabin airflow states.

A fast start controller activates elevator motor power and brake release circuits immediately upon car door closure.

Detects rope damage by comparing real-time electrical resistance against a baseline threshold, eliminating costly periodic inspections.

Giant magneto-resistance sensors monitor belt alignment to prevent flange damage and reduce maintenance costs.