Quick Release Headrest Assembly Using Plunger and Spring Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing headrest assemblies in seats, particularly in aircraft, require complex and labor-intensive processes for maintenance and replacement, as they are often difficult to access and disassemble without tools, which can lead to increased maintenance times and costs, and may not meet industry standards.
Innovation Solution
A quick release headrest assembly is introduced, featuring a plunger with a lever and compressible spring mechanism that allows for tool-free disengagement of the headrest support plate from its base, enabling easy access and maintenance, while meeting aviation standards through a rail and carriage sub-assembly and U-shaped slot design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a traditional headrest assembly is used, then the headrest is securely installed on the seat, but the headrest assembly becomes difficult to access and disassemble without tools
Solution Approach 1:
The headrest removal sub-assembly enables the headrest support plate to be removed without external tools by using a manual lever mechanism that actuates a plunger to release the stopper, allowing the system to service itself through user-applied mechanical force
Solution Approach 2:
The headrest assembly is divided into separable components including the headrest support plate, base, and removal sub-assembly, allowing the support plate to be independently removed from the base through the quick release mechanism
2Loss of time
If the headrest assembly requires tool-free removal, then maintenance time is reduced, but the mechanism becomes more complex
Solution Approach 1:
The stopper is pre-positioned within the cavity of the headrest support plate, and the plunger is pre-loaded with spring tension, so that applying force to the lever immediately triggers the release sequence without requiring multiple steps or adjustments
Solution Approach 2:
The plunger acts as an intermediary mechanical element that translates the rotational or linear motion of the lever into linear displacement of the stopper, enabling indirect control of the release mechanism through a simple user interface
3Ease of repair
If the headrest support plate is securely coupled to the base, then the headrest remains stable during use, but the headrest cannot be easily removed for maintenance
Solution Approach 1:
The coupling mechanism transitions from a static locked state (stopper engaged in cavity) to a dynamic release state (stopper disengaged) through the action of the plunger and lever, allowing the system to switch between stable and removable configurations
Solution Approach 2:
The stopper is extracted from its engaged position within the cavity of the headrest support plate by the plunger mechanism, releasing the secure coupling between the support plate and base to enable removal
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 quick release mechanism allows for rapid and cost-effective maintenance of headrest components, reducing labor costs and maintenance times, and ensures compliance with industry standards by facilitating quick disassembly and reassembly without tools.
Implementation Method 1
a compressible spring coupled to the second end of the plunger and configured to surround at least a portion of the plunger shaft
Implementation Method 2
the plunger configured to translate the stopper between at least a first stopper position and a second stopper position when a force is applied to the lever portion of the plunger to cause the plunger to compress a portion of the compressible spring within the cavity of the base
Data Source
AI summary
A headrest removal assembly is disclosed. The assembly may include a plunger including a plunger shaft and lever portion. The assembly may include a compressible spring coupled to the plunger and configured to surround at least a portion of the plunger shaft. The plunger configured to translate the stopper between at least a first position and a second position when a force is applied to the lever portion of the plunger to cause the plunger to compress a portion of the compressible spring within the cavity of the base to cause the stopper to disengage from the cavity within the headrest support plate to cause the headrest removal assembly to disengage from the headrest support plate.