Elevators TRIZ Cases

Weight monitoring detects passenger presence when light barriers malfunction, activating emergency closing modes that reduce door kinetic energy.

Non-walkable elevator car roof relocates safety clearance inside the cabin interior to allow closer approach to the shaft ceiling.

An elevator controller monitors hoistway door, inspection, and emergency stop switches to verify functionality before enabling inspection mode.

A mechanical slider protrudes from elevator landing doors to prevent switch engagement during maintenance, eliminating reliance on manual safety switches.

A control unit compares elevator component movement data to detect guide rail deviations and generate misalignment signals.

A lighting device illuminates elevator shafts using distinct color signals to indicate system states and safety component positions.

Velocity threshold comparison and encoder fault timer limit unintended motion to 2 or 3 cm by disabling the drive system when feedback is lost.

An elevator control system directs cars to floors with the highest occupancy during emergencies.

A compact elevator traction system uses a C-shaped sheave arrangement to optimize hoistway space usage.

Elevator control device transmits car assignment data to a user terminal display unit for real-time visual confirmation.

Carbon fiber reinforced ropes reduce elongation to allow simultaneous leveling of multiple elevator cars with one hoisting machine, lowering device complexity.

Reduced vertical extent allows retrofitting in existing buildings while automatic control prevents unintended movement during maintenance.

An escalator monitoring system uses inertial measurement units to detect operating modes alongside weather data.

Spring-based detaching means pull braking wedges away from guide rails after engagement, reducing wear and maintaining positioning precision.

Multi-point optical measurements calculate diameter reduction trends to predict replacement timing and eliminate unplanned elevator downtime.

Segmented spring and latch mechanisms minimize electromagnetic size while ensuring reliable synchronous braking.

A variable mass elevator counterweight adjusts its weight dynamically to match the car load.

Bottom grooves allow widthwise compression for easy press-fit installation, eliminating special tooling and improving ride quality.

A speed detection device uses a transmission rotor and encoder assembly to monitor rotational velocity on passenger conveyer shafts.

Segmented safety and auxiliary circuits route power around open doors, enabling one elevator car to operate while the other is blocked.

A sensor learning phase generates a background reading to verify installation and distinguish physical characteristics in an elevator pit.

Inversion of access eliminates top safety volume requirements while intermediary device enables precise clearance measurement and adjustment.

Elevator control unit dynamically adjusts levelling speed limits using real-time sensor data to optimize car positioning.

Adjustable fastening means pivot rail elements to expose the rear space.

A snap-fit elevator lantern tray uses pressure tabs to join the lens and control board for tool-free front-side access.

Tensioning element applies internal mechanical stress to elevator rail head sides for precise section alignment.

Dispatch controller assigns passengers with large items to suitable elevators, preventing overcrowding and overloading.

Automated detection of elevator landing door closing function using balanced driving force application to the car door.

Manual selection of an elevator car triggers automatic movement of other cars away from the driving area.

Pivoting rockers engage rollers with a core ring to enable remote triggering and adjustable speed limits in high-speed elevators.

Two-dimensional sensor curtains detect object positions in front of a display to map selections without physical contact, reducing pathogen transmission risk.

Segmented walkway with adjustable rungs clears shaft obstructions to ensure safe passenger exit.

A counterweight governor assembly integrates braking components within the frame structure to inhibit movement.

An electromagnet rotates a cam disc to engage the guide rail, ensuring reliable braking during power failures without lateral displacement.

An elevator group controller initiates call allocation by detecting approaching passengers, reducing response time before destination selection.

Independent rotation of cambered rope wheels equalizes belt tension, reducing uneven wear and damage across the elevator system.

Staged signal transmission prevents unnecessary emergency braking from transient position errors.

Detecting shaft magnets via identification codes resolves positioning accuracy issues while reducing equipment costs.

A hollow counterweight body filled with high-density material dissipates kinetic energy during freefall.

Function menus guide technicians through parameterization, eliminating complex menu navigation and reducing setup errors.

An elevator information display device selects and interrupts general content based on operational state to prioritize critical updates.

Transient breaks in the elevator safety circuit trigger impact detection by comparing signal characteristics against parameters, preventing undetected damage.

A safety controller manages elevator car movement to the nearest landing before deploying a brake.

A remote service center controls an elevator car using dynamic movement parameters and position sensors.

Continuous signal comparison prevents unintended cabin descent without adding independent safety hardware.

A specialized smoothing device guides along hollow elevator rails to remove surface material.

Dynamic brake control reduces elevator collision speed by adjusting braking force via real-time travel data, absorbing shock below specified values.

Deflecting rollers release compensating tension to raise the drive platform, preserving wire rope structural integrity during construction.