Building Lifts TRIZ Cases
- Elevator Door Coupler Assembly for Variable Hoistway Heights
An adjustable door coupler assembly accommodates varying hoistway opening heights, eliminating the need for multiple fixed components to reduce system costs.
- Elevator Door Glass Fixing Apparatus with Elastic Rear Sheet
An elastic rear sheet and segmented edge fasteners enable external glass replacement, eliminating the need for full door disassembly during maintenance.
- Elevator Door Stabilizing Roller Guide Mechanism
Rolling guide rollers restrain axial door movement to prevent noise from wind pressure forces.
- Elevator Cab Sound Panels with Perforated Ventilation
Perforated elevator panels integrate foam absorbers to reduce noise while maintaining airflow.
- Elevator Door Control Device Mass-Based Speed Tracking
A control device determines motor instruction values based on elevator door mass to align actual speed with instructions.
- Elevator Lock Strike Plate Emergency Unlocking Mechanism
Segmented lock strike plate uses a cam-driven ejection tooth to disengage the bolt, resolving accessibility and bulk constraints.
- Modular Elevator Shaft Stiffening Beams
Stiffening beams span elevator shaft openings within modular transport units, ensuring structural stability during rapid construction.
- Freestanding Wheelchair Lift with Inclined Rails
A freestanding wheelchair lift uses inclined rails and a motorized platform to transport users vertically.
- Lift Platform Vertical Horizontal Movement Access
A lift platform moves vertically and horizontally to bridge entrance height differences.
- Elevator Landing Doorway Frame Heat Insulation
Insulating material on the vertical frame prevents fire heat from reaching the hoistway, resolving the temperature-strength contradiction.
- Six-Panel Lift Door Stiffness via C-Shaped Rail Merging
Merged C-shaped rails extend carrying plates to boost stiffness, enabling safe six-panel door operation in lifts narrower than 1400 mm.
- Elevator Landing Door Roller Adjustment Gauge
A mechanical gauge copies landing door coupler vane distances to the top track for accessible roller positioning.
- Permanent Motor Hoisting in Machine Room-less Elevator Construction
Pre-installed permanent motors hoist rails to eliminate temporary equipment and reduce installation complexity.
- Elevator Door Locking Beak Assembly with Magnetic Detection
Magnetic detector arm senses elevator leveling zone position to unlock the door locking beak assembly.
- Elevator Electromagnetic Brake Noise Reduction
Segmented springs and preliminary cushioning reduce collision noise while maintaining standstill retentive force.
- Stairlift Torque Limiter Pin-Groove Decoupling Mechanism
A spring-loaded detent mechanism decouples the motor drive when force exceeds a threshold, protecting the stairlift motor from overload damage.
- Elevator Car Skirt Pivot Mechanism for Shaft Gap Safety
Gravity-driven car skirts block shaft gaps without complex locking mechanisms, ensuring stability during evacuations.