Seat-Back Display Latch and Docking Design for Secure Removal
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Solution Overview
Problem
Modern in-flight seat-back entertainment systems face challenges such as high likelihood of malfunction, unauthorized removal, insecure installation, misalignment issues, heat management limitations, and shock hazards due to the need for precise alignment and lack of secure engagement mechanisms.
Innovation Solution
A seat-back entertainment system featuring a rotating butterfly latch for secure and easy removal, a three-point engagement system for secure installation, improved current control to prevent premature power supply, and a heat dissipation system using thermally-conductive materials to manage heat effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-point contact release mechanism is used, then ease of operation is improved, but security against unauthorized removal deteriorates
Solution Approach 1:
The release mechanism uses asymmetric geometry where the tool must have specifically shaped engagement surfaces that match the recess geometry. This prevents unauthorized removal because generic objects cannot properly engage both contact points simultaneously, while the authorized tool can easily actuate the release
Solution Approach 2:
A specialized tool serves as an intermediary between the operator and the release mechanism. The tool translates simple user input into the precise dual-point actuation required, maintaining security while preserving ease of operation for authorized personnel
2Reliability
If precise alignment is required for installation, then connection reliability is improved, but ease of operation deteriorates
Solution Approach 1:
Alignment features such as guide pins, tapered surfaces, or keyed interfaces are built into the connector design to automatically establish proper alignment during the installation process. This preliminary alignment action occurs before final engagement, ensuring connection reliability without requiring manual precision from the installer
Solution Approach 2:
The connector design incorporates self-aligning characteristics where the geometry of the mating surfaces automatically guides proper positioning during insertion. The system serves its own alignment needs through its structural design, eliminating the need for external alignment tools or techniques
3Ease of repair
If the display unit is made removable for quick replacement, then ease of repair is improved, but security against accidental dislodgement deteriorates
Solution Approach 1:
The engagement system uses dynamic elements such as spring-loaded latches, cam-actuated locks, or friction-based retaining features that maintain secure holding under normal vibration and gravity conditions, yet can be quickly released with minimal actuation force. This allows the system to adapt its engagement characteristics based on operational conditions
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 system ensures secure and easy installation/removal, prevents unauthorized access, ensures proper power engagement, and effectively manages heat, enhancing safety and operational reliability.
Implementation Method 1
a heat dissipation system using thermally-conductive materials to manage heat effectively
Data Source
AI summary
An entertainment system including a removable seat-back display unit and a docking station. The seat-back display unit can include a rotating latch butterfly release mechanism that prevents unauthorized release of the display unit from the docking station. The system can include a three-point attachment system that provides additional protection against accidental detachment of the display unit, and provide safety in the event of partial dislodging. The system can include a current control pin system that ensures that current is not provided from the docking station to the display unit until the respective connectors have been properly engaged. The system can also include a heat dissipation system that employs the docking station to share the heat dissipation load with the display unit.