Friction Disk Wear Liner Notch for Fastener-Free Torque Transfer
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Solution Overview
Problem
Current aircraft braking systems face torque transfer issues when wear liners are worn, particularly due to the use of fasteners and rivets for attaching wear liners to friction disk cores, which complicates assembly and increases material waste.
Innovation Solution
The introduction of wear liners with integrated notches that protrude from a non-wear surface, allowing for loose coupling with friction disk cores and eliminating the need for fasteners, enabling torque transfer through complimentary recesses and steps, thus simplifying assembly and reducing material waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wear liners are attached to friction disk cores via fasteners and rivets, then the attachment is secure, but the assembly complexity increases and material waste increases
Solution Approach 1:
The patent merges the wear liner and friction disk core into a single integrated component. The wear liner is formed as an integral part of the friction disk core, eliminating the need for separate attachment mechanisms such as fasteners and rivets. This integration directly reduces assembly complexity while maintaining attachment security through the unified structure.
Solution Approach 2:
The patent extracts and eliminates the unnecessary fasteners and rivets from the assembly. By removing these separate attachment components and replacing them with an integrated design, the patent reduces both assembly complexity and material waste while preserving the functional requirement of secure attachment between the wear liner and friction disk core.
2Reliability
If wear liners are attached via fasteners and rivets, then the attachment is secure, but assembly time increases
Solution Approach 1:
The integration of the wear liner with the friction disk core into a single component eliminates the time-consuming processes of separate attachment. The unified structure allows the component to be installed as one piece, dramatically reducing assembly time while maintaining secure attachment through the integrated design.
3Reliability
If wear liners are attached via fasteners and rivets, then the attachment is secure, but material waste increases
Solution Approach 1:
The integrated design merges the wear liner and friction disk core into a single component, eliminating the need for separate fasteners and rivets. This reduction in component count directly decreases material waste while maintaining attachment security through the unified structure.
Solution Approach 2:
The patent extracts and eliminates unnecessary fasteners and rivets from the assembly, reducing material waste. By removing these separate attachment components and replacing them with an integrated design, the patent decreases the total material required while preserving secure attachment functionality.
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A friction disk of a braking system may include a friction disk core and a first wear liner (140). The friction disk core has an outer surface that defines a recess extending gradually inward from the outer surface, according to various embodiments. The wear liner mates to the outer surface of the friction disk core and includes a wear surface and a first non-wear surface, according to various embodiments. The first wear liner further includes a notch (152) extending gradually outward from the first non-wear surface of the wear liner, according to various embodiments. In an installed state, the notch is received within the recess, according to various embodiments.