Cable Tension Hub Mechanism for Stable Seat Locking
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Solution Overview
Problem
Existing seat adjustment systems in vehicles, such as aircraft, often allow excessive seat movement after locking and are difficult to tighten, making it hard to maintain a desired position.
Innovation Solution
A cable tension triggering system that includes a hub and bell crank mechanism to rotate and create tension in cables, which actuate seat locking mechanisms, ensuring the seat is securely locked in place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing seat adjustment systems are used, then the seat can be adjusted to different positions, but the seat allows excessive movement after locking and is difficult to tighten
Solution Approach 1:
The system transitions from a static locking mechanism to a dynamic cable tensioning system where the cable can be actively tensioned and adjusted. The cable triggering system allows the seat position to be dynamically locked at any point along the track by applying tension to the cable, which then maintains that position with minimal movement.
Solution Approach 2:
The invention changes the physical parameter of cable tension to control seat position and locking. By adjusting the tension parameter in the cable system, the seat can be locked securely at desired positions. The cable tension acts as the controlling parameter that eliminates excessive seat movement while maintaining ease of adjustment through simple tensioning action.
2Reliability
If cable tension is applied to locking mechanisms, then seat movement is minimized and locking is secure, but the system complexity increases
Solution Approach 1:
The cable triggering system serves multiple functions simultaneously: it acts as both the actuation mechanism for locking and the tensioning element for maintaining position. The same cable that triggers the locking mechanism also provides the continuous tension needed to minimize seat movement, eliminating the need for separate locking and tensioning systems.
Solution Approach 2:
The invention merges the locking mechanism actuation and the position maintenance functions into a single integrated cable system. The cable triggering system combines the elements that initiate locking with the elements that maintain secure positioning, reducing overall system complexity despite the enhanced locking reliability.
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 effectively minimizes seat movement by applying precise tension to locking mechanisms, allowing for easy adjustment and secure locking of the seat in the desired position.
Implementation Method 1
a bell crank configured to rotate about a second pivot point, wherein the bell crank is configured to contact the hub when the bell crank is rotated thereby driving rotation of the hub
Implementation Method 2
an activation cable operatively coupled to the bell crank, wherein the activation cable enables rotation of the bell crank thereby rotating the hub for releasing one or more of the locking mechanisms
Data Source
AI summary
A cable tension triggering mechanism. It may be used with a variety of cables including those that have flexible members routed through bendable sheaths. The triggering mechanism includes a rotatable hub mounted to a swiveling plate. When the hub rotates around its pivot point, it increases the tension forces in cables thereby causing the cables to pull on locking mechanisms. The hub rotates when the plate is rotated and a stub extending from the plate presses against an end of the hub to cause the hub to rotate.