Elevator Door Rail Retracting Mechanism
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Solution Overview
Problem
Existing elevator door systems face issues with energy inefficiency, material waste, and safety concerns due to the fixed rail dimension causing friction and mounting difficulties, leading to increased costs and potential accidents during installation and maintenance.
Innovation Solution
The elevator door system incorporates a rail system that allows rails to be retracted or extended within the door mechanism, reducing the opening distance by 50% and utilizing a door skate system motion mechanism with stabilizer pulleys, first and second pulleys, a distance lever, and a motion pin to enable efficient movement and adjustment, while maintaining a constant entrance distance between the building floor and the elevator cabin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fixed rail dimension is increased to accommodate door mechanism, then the door can be mounted, but it causes friction at the door edge concrete and creates safety flaws
Solution Approach 1:
The patent applies the dynamics principle by making the rail system movable rather than fixed. The rail can extend during door opening operation and retract when the door is closed, dynamically adjusting its position to avoid continuous contact with the door edge concrete. This eliminates the friction problem while maintaining the necessary structural support for door operation.
2Ease of manufacture
If the fixed rail dimension is increased to provide sufficient cabin entrance space, then mounting is possible, but it causes loss of energy due to longer movement during operation
Solution Approach 1:
The rail system dynamically adjusts its length based on operational requirements. During door opening, the rail extends to provide the necessary cabin entrance space. When the door is closed, the rail retracts to its minimum length. This dynamic adjustment eliminates the need for a permanently long rail, thereby reducing energy consumption during door operation while maintaining adequate mounting and operational space.
3Reliability
If the fixed rail dimension is increased to accommodate door mechanism, then the door can operate, but it leads to material waste within the mechanism frame and floor door frame
Solution Approach 1:
The patent implements a movable rail that extends only when needed for door operation and retracts when not in use. This dynamic configuration eliminates the need for a permanently extended rail structure, thereby reducing the amount of material required for the mechanism frame and floor door frame while ensuring reliable door operation when the rail is extended.
4Loss of energy
If the rail system is made movable to reduce opening distance, then energy consumption is reduced, but the device complexity increases
Solution Approach 1:
The patent merges the rail extension/retraction function with the existing door opening/closing mechanism. The rail is integrated into the door mechanism structure, and its movement is coupled with the door operation itself. This combining approach reduces the need for separate, complex control systems while achieving the energy-saving benefit of reduced rail movement distance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution reduces energy consumption by 50%, enhances safety by eliminating friction and accidents, and simplifies installation and maintenance by allowing easy adjustment and compatibility with various cabin models, thereby reducing labor hours and material costs.
Implementation Method 1
a door skate system motion mechanism (6) for moving the door skate (12) system after the interior safety door panels are closed and providing harmonious operation with the floor door
Implementation Method 2
a distance lever located on the door skate system motion mechanism and restricting the displacement distance
Data Source
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AI summary
The invention relates to an elevator door system which is used in multi-storey structures and in all kinds of buildings, and which saves energy by shortening the opening distance of the elevator. The invention particularly relates to an elevator door system used in elevators, which enables rails to be collapsed and opened within the door mechanism by reducing the distance of moving rails at a rate of 1/2 by maintaining the floor and cabin entrance distance, and which saves energy by driving a spoon (12) system by means of a spoon system motion mechanism (6).