Water-Activated Buckle Release for Rapid Passenger Egress
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Solution Overview
Problem
Existing restraint systems face a dilemma in being robust enough to withstand accidents while allowing easy passenger egress, especially in water-related accidents where timely release is critical for safety.
Innovation Solution
A water-activated restraint release system that incorporates a water sensor into the buckle mechanism, automatically releasing the restraint when submerged, allowing for quick egress and retrofittable onto existing systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the restraint system is made robust to withstand accident shocks and impacts, then the reliability of the restraint during accidents is improved, but the ease of operation for passenger egress deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-positioning a water-activated release mechanism within the buckle assembly. The mechanism includes a water sensor and release actuator that are prepared in advance but remain dormant during normal operation. When water contacts the sensor during a water-related accident, the pre-positioned components automatically activate to release the restraint, solving the contradiction by having the robust restraint system automatically become easy to operate under specific accident conditions without requiring manual intervention from the passenger.
Solution Approach 2:
The restraint system applies self-service through the automated water-activated release mechanism. The system monitors its own environment via the water sensor and automatically triggers the release actuator when water is detected, eliminating the need for passenger action. This self-service capability allows the robust restraint to automatically facilitate easy egress in water-related accidents, resolving the contradiction between maintaining restraint integrity and enabling quick release.
2Reliability
If the restraint system is made robust to prevent unintended release, then the reliability during accidents is improved, but the time required for passenger egress increases
Solution Approach 1:
The water-activated release mechanism is pre-configured within the buckle assembly with the water sensor and release actuator positioned and ready. During normal operation, the robust restraint maintains stability without any additional components interfering. Upon water contact during a water-related accident, the pre-positioned mechanism immediately activates, causing instantaneous release that eliminates egress time delays, thus resolving the contradiction between restraint stability and rapid egress.
Solution Approach 2:
The patent replaces the traditional manual mechanical release system with a water-activated automated release mechanism. Instead of requiring passengers to manually manipulate release components, the system uses water sensor detection to trigger an automated actuator that mechanically releases the restraint. This substitution maintains restraint stability during normal use while enabling instantaneous release in water-related accidents, eliminating the time loss associated with manual egress operations.
3Ease of operation
If a water sensor is integrated into the buckle mechanism for automatic release, then the ease of operation for water-related accident egress is improved, but the device complexity increases
Solution Approach 1:
The patent applies merging by integrating the water sensor and release actuator components directly into the existing buckle assembly structure. Rather than adding separate external devices, the sensor and actuator are combined with the buckle's internal mechanisms, sharing common housing and mounting structures. This merging approach enables automatic release capability while minimizing the increase in overall device complexity by utilizing the existing buckle framework.
Solution Approach 2:
The buckle assembly is designed with multi-functionality, serving both as the traditional mechanical restraint connector and as the housing for the water-activated release mechanism. The same buckle structure that provides mechanical coupling also contains the water sensor and actuator components, allowing it to perform both manual restraint functions and automated water-responsive release functions. This universality reduces device complexity by eliminating the need for separate dedicated water release hardware.
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
Ensures passenger safety by automatically releasing the restraint in water-related accidents, facilitating quick exit from vehicles and reducing the risk of fatal consequences.
Implementation Method 1
A sensor, such as a water sensor, can be incorporated into the actuator to automatically release the restraint upon contact with water.
Data Source
AI summary
A water activated restraint release that is designed to be retrofitted onto an existing restraint system. The water activated restraint release includes a buckle and a tang to be secured to the buckle. The buckle includes a release mechanism and an actuator assembly. The actuator assembly causes the release mechanism to release the tang in the presence of water, thereby releasing a passenger.