Emergency Exit Release Mechanism Button Cable Actuation
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Solution Overview
Problem
Conventional emergency exit release mechanisms require significant effort and can be difficult for individuals, especially the elderly or disabled, to operate during emergencies due to complex lever functions and hidden operation locations.
Innovation Solution
A release control mechanism featuring a button-mounted outside the housing with a connected releasing cable and pulley system, allowing easy operation by anyone, including the elderly or disabled, to release the torsion spring and open the emergency exit by pressing the button, which engages the pulley and releases the brake.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional driving mechanism with lever function is used to operate the release lever, then the mechanism can release the brake, but the operation requires extended arm of force and significant effort, making it difficult for elderly or disabled persons to operate
Solution Approach 1:
The patent extracts the essential function of brake release from the complex lever-based driving mechanism. Instead of using a conventional lever system requiring extended arm of force, the invention directly connects a simple button to the release lever through a cable, eliminating the need for complex mechanical advantage structures while maintaining the brake release function.
Solution Approach 2:
The patent introduces a cable as an intermediary element between the button and the release lever. This cable-mediated connection simplifies the transmission of force from the button press to the release lever, replacing the complex lever-based force multiplication system with a more straightforward pull-cable mechanism that requires minimal operating effort.
2Speed
If the release control mechanism is designed with conventional lever operation, then the brake can be released, but the operation location is hidden and requires time to find and operate during emergency
Solution Approach 1:
The button is designed to be self-explanatory and self-operating. Its protruding design outside the housing makes it immediately identifiable and accessible without requiring users to search for or understand complex lever mechanisms. The button's location and appearance serve their own function of being easily found and pressed during emergency situations.
3Productivity
If a torsion spring is coupled to the rolling shaft to automatically roll up the door, then the door can be opened quickly, but the release mechanism requires significant force to activate the spring
Solution Approach 1:
The cable acts as a mediator that transmits the relatively small force from the button press to the release lever, which then activates the torsion spring. This cable-mediated force transmission allows the system to overcome the high force requirement of the torsion spring without requiring the user to directly apply that large force, enabling quick door opening with minimal user effort.
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
Enables quick and effortless operation of emergency exits during emergencies, ensuring accessibility for all individuals, including the elderly and disabled, by providing a visible and easily operable button that activates the release mechanism, facilitating rapid door opening.
Implementation Method 1
a torsion spring member that automatically reverses the door panel elements of the rolling door from the close position to the open position when released
Implementation Method 2
a pulley, and a releasing cable that is passed through the pulley
Implementation Method 3
a brake adapted to brake the rolling door in the close position
Data Source
AI summary
A release control mechanism installed in a rolling door-controlled emergency exit, which includes a driving mechanism, a release control lever provided outside the driving mechanism for releasing a brake of the driving mechanism from a torsion spring member, and a releasing cable, which has a first end connected to said release control lever and a second end coupled to the release control mechanism. The release control mechanism uses a spring member to preserve pressure for moving the releasing cable, and a button for pressing by a person in case of an emergency to release the preserved pressure and to further pull the releasing cable to move the release control lever to open the rolling door of the emergency exit.