Compact Pneumatic Window Closure Mechanism
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Solution Overview
Problem
Existing fire and smoke protection doors and ventilation systems have bulky locking devices that are visually unappealing and require large structures, limiting their compactness and ease of closure.
Innovation Solution
A compact pulling device with a tension element and trigger mechanism, utilizing a magnet for automatic actuation in fire scenarios, allows for the door or window to be closed without a linkage, featuring a deflection device for flexible positioning and a gas pressure spring for force application, with a reset mechanism for manual or automatic operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If traditional locking devices with linkages are used, then the door can be mechanically closed, but the structure becomes bulky and visually unappealing
Solution Approach 1:
The patent replaces the traditional mechanical linkage system with a pneumatic actuator that uses compressed air to directly move the door leaf. This substitution eliminates the need for complex mechanical linkages, reducing structural complexity and visual impairment while maintaining reliable closure function through pneumatic force.
Solution Approach 2:
The patent employs a pneumatic actuator utilizing compressed air storage and release to drive the door closing mechanism. The pneumatic system provides sufficient force for reliable closure without requiring bulky mechanical linkages, thus resolving the contradiction between structure size and closure reliability.
2Ease of operation
If a linkage mechanism is used for door closure, then the door can be moved to closed position, but the space requirement increases
Solution Approach 1:
The patent replaces the space-consuming mechanical linkage with a compact pneumatic actuator. The pneumatic system stores energy in a compressed air reservoir and releases it to move the door, requiring significantly less space while maintaining ease of operation through automatic actuation.
Solution Approach 2:
The pneumatic actuator components are nested within each other - the piston inside the cylinder, the compressed air reservoir integrated into the actuator housing. This nesting arrangement minimizes the overall volume of the closing device while preserving the door closing function.
3Reliability
If locking devices are mounted on the outside upper horizontal area, then the door can be secured, but the visual appearance is impaired
Solution Approach 1:
The patent replaces the externally mounted mechanical locking device with an integrated pneumatic actuator system. The pneumatic components can be concealed within the door or frame structure, eliminating visual impairment while maintaining reliable door securing through the pneumatic closing action.
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
The solution enables a visually discreet, compact, and efficient closure mechanism that automatically engages in fire or storm conditions, ensuring secure sealing and locking without the need for external linkages, enhancing both functionality and aesthetics.
Implementation Method 1
The pulling device has a gas pressure spring, by means of which the pulling element can be moved. With a compact design, such a gas pressure spring can provide the necessary force for moving the tension element and the wing.
Implementation Method 2
The triggering mechanism preferably comprises an energized magnet, which triggers actuation of the traction device when the power supply is interrupted.
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A cord (5) guided by a deflection device (9) e.g. a roller, is fastened at one end to the frame (2). At the other end, it is fastened to a pulling device with a release mechanism. When this is operated, it pulls the cord, hence closing the open door or window (3). The cord passes from the frame (2) to the roller and into a channel between the e.g. window and frame, or to the pulling device in the channel. The release mechanism is based on electromagnets; when the current is interrupted the pulling device operates.