Double-Panel Door Cable Actuation Eliminates Axle Cavitation
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Solution Overview
Problem
Existing double panel quick-opening doors face issues with load transfer to the upper actuation axle leading to flexions and cavitations, elongated windows weakening intermediary profiles, banging of intermediary profiles, and significant deterioration due to friction during operation, and high machining costs.
Innovation Solution
The use of resistant cords or cables with pulleys and elastic plugs with magnetic attraction, eliminating the need for roller drums and intermediary profiles, ensuring smooth movement and reducing friction and wear, along with counterweights and anti-friction panels to manage stress and prevent excessive force transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If roller drums with an upper axle are used to transfer loads, then the door panels can be actuated, but flexions and cavitations occur in the axle under unfavorable conditions
Solution Approach 1:
The patent removes the roller drums and upper axle from the system entirely, replacing them with cords or cables that run directly from the door panels to the actuating mechanism. This extraction eliminates the problematic axle component that suffered from flexions and cavitations, while maintaining the load transfer function through the cord-based system.
2Ease of operation
If intermediary profiles with elongated windows are used for belt passage, then the actioning mechanism can function, but the profiles are weakened and machining costs increase
Solution Approach 1:
The patent eliminates the intermediary profiles entirely from the system. Instead of using profiles with elongated windows for belt passage, the invention employs cords or cables that run directly through the door panels and connect to the actuating mechanism, removing the need for any intermediary structural elements that would require machining.
3Ease of operation
If intermediary profiles are used during door opening, then the panels can be moved, but banging occurs between profiles and on the upper cross-piece
Solution Approach 1:
The patent removes the intermediary profiles that cause banging and impact during door opening. The cord-based actuation system allows panels to move without rigid intermediary elements that collide with each other and the upper cross-piece, eliminating the harmful impact noises and potential damage.
4Ease of operation
If side edges of panels are linked with vertical posts, then the panels are guided, but significant deterioration occurs due to friction
Solution Approach 1:
The patent replaces the mechanical friction-based guiding system (where panel edges rub against vertical posts) with a cord-based actuation system. The cords or cables guide and actuate the panels without direct contact between the panel edges and the vertical posts, substituting a low-friction mechanism for the high-friction mechanical contact.
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 prevents flexions and cavitations, reduces wear and machining costs, ensures smooth operation, and enhances the durability of the door components by distributing loads effectively and minimizing friction and impact.
Implementation Method 1
elastic plugs with magnetic attraction
Data Source
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Figure 5~7
AI summary
The invention relates to a door including: a frame formed by two vertical posts (1) and an upper cross-piece (2), and two closure panels (3) suspended from the upper cross-piece (2) and connected to one another at different heights by resilient dampers (4) which can be moved vertically by adjustable stop elements (51) connected to cords or cables (5) which are guided through pulleys (7) mounted on the upper cross-piece (2) and which define loops (5a) with which actuation means (9, 91) engage, thereby varying the length of the loops (5a) and opening or closing the door. The door also includes means for movably mounting the side edges of the closure panels (3) in relation to the vertical posts (1) and means for securing the closure panels (3) to the upper cross-piece (2) of the frame.