Aircraft Seat Fixing Rail Device With Self-Aligning Locking Projections
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Solution Overview
Problem
Existing devices for fixing aircraft seats to cabin floor rails require precise movement of support parts to engage locking projections with recesses, leading to increased assembly time and potential tilting or jamming issues due to inaccuracies in distance alignment.
Innovation Solution
A device with a support part and sliding part, where the sliding part is displaced by half the distance between recesses to secure the support part in the rail, ensuring stable engagement without requiring seat movement, and featuring a locking mechanism for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the support part is moved by half the distance between adjacent recesses to engage locking projections, then secure locking is achieved, but assembly time increases and tilting or jamming may occur due to alignment inaccuracies
Solution Approach 1:
The locking projections are pre-positioned on the support part at locations corresponding to half the distance between adjacent recesses. This preliminary positioning eliminates the need for precise movement during assembly, as the locking projections automatically align with the recesses when the support part is inserted into the fixing rail, thereby reducing assembly time while maintaining reliable locking.
Solution Approach 2:
The support part is designed with T-shaped guide sections that automatically guide the locking projections into the recesses during insertion. The system self-aligns through the geometric constraint of the T-shaped guides, eliminating the need for manual positioning or external alignment tools, thus reducing assembly time and preventing tilting or jamming.
2Reliability
If the support part is moved precisely by half the distance between recesses, then locking is possible, but assembly becomes complicated and time-consuming
Solution Approach 1:
The locking projections are pre-positioned on the support part at locations corresponding to half the distance between adjacent recesses. This preliminary positioning eliminates the need for precise movement during assembly, as the locking projections automatically align with the recesses when the support part is inserted into the fixing rail, thereby reducing assembly time while maintaining reliable locking.
Solution Approach 2:
The support part is designed with T-shaped guide sections that automatically guide the locking projections into the recesses during insertion. The system self-aligns through the geometric constraint of the T-shaped guides, eliminating the need for manual positioning or external alignment tools, thus reducing assembly time and preventing tilting or jamming.
3Reliability
If the entire row of seats is moved to position the support part, then locking can be achieved, but assembly time increases significantly
Solution Approach 1:
The locking projections are pre-positioned on the support part at locations corresponding to half the distance between adjacent recesses. This preliminary positioning eliminates the need for precise movement during assembly, as the locking projections automatically align with the recesses when the support part is inserted into the fixing rail, thereby reducing assembly time while maintaining reliable locking.
Solution Approach 2:
The support part is designed with T-shaped guide sections that automatically guide the locking projections into the recesses during insertion. The system self-aligns through the geometric constraint of the T-shaped guides, eliminating the need for manual positioning or external alignment tools, thus reducing assembly time and preventing tilting or jamming.
Data Source
AI summary
The device (18) has a support part (20), whose lower side comprises a plug-in section (22) adapted to the contour of a longitudinal slot. The plug-in section is inserted in a fixing rail (10). A sliding part (30) inserted in the fixing rail is guided in longitudinally displaceable manner at the support part. The sliding part is displaceable at the fixing rail relative to the support part for fixing the support part. The plug-in section has the contour of two or three adjacent recesses.