Vehicle Cabin Sidewall-Floor Friction-Fit Coupling for Flex Cycling
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Solution Overview
Problem
Existing connector members between vehicle sidewall assemblies and floor structures experience premature failure due to flex cycling, necessitating maintenance and requiring time-intensive tool-based installation and removal processes.
Innovation Solution
A friction-fit sidewall coupling assembly that connects the sidewall and floor structures without fasteners, utilizing a floor coupling structure with a flexible design to absorb loads and a sidewall coupling structure that snaps onto the floor coupling structure, allowing for tool-less and fastener-less installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional fastener-based connector members are used to couple floor structures to sidewall assemblies, then structural integrity is maintained, but the installation and maintenance processes become time-intensive and manually demanding
Solution Approach 1:
The patent removes fasteners entirely from the coupling system, extracting the problematic element that caused time-intensive installation and maintenance. The friction-fit connector members are designed to be installed without any fastening hardware, allowing simple insertion and engagement that eliminates the need for tools and manual fastening operations.
Solution Approach 2:
The patent replaces the traditional mechanical fastener-based coupling system with a friction-fit mechanical system. Instead of using screws, bolts, or clips to secure the connector members, the design relies on friction between mating surfaces to maintain the structural connection, fundamentally changing the mechanical coupling mechanism.
2Reliability
If rigid connector members are used to couple floor structures to sidewall assemblies, then structural strength is maintained, but the connector members experience premature failure due to flex cycling from torsional forces
Solution Approach 1:
The patent transitions from static rigid connector members to dynamic flexible connector members that can adapt their stiffness based on operational conditions. The flexible material allows the connector to bend and flex during torsional loading from aircraft maneuvers, then return to its original shape, preventing fatigue failure while maintaining structural integrity throughout the operational lifetime.
Solution Approach 2:
The patent changes the material parameter of the connector members from rigid to flexible. This parameter change allows the connectors to accommodate flex cycling caused by torsional forces during flight, preventing premature failure while maintaining the necessary structural strength through the flexibility and elastic recovery of the material.
3Duration of action of stationary object
If flexible connector members are used to absorb loads from flex cycling, then operational lifetime is extended, but structural integrity may be compromised
Solution Approach 1:
The patent optimizes the flexibility parameter of the connector members to achieve the right balance. The flexible material is selected and designed to provide sufficient give during normal flex cycling to extend service life, while maintaining enough structural integrity to support the required loads and maintain cabin structural strength throughout the extended operational lifetime.
4Ease of repair
If traditional fastener-based assembly methods are used, then structural connection is secure, but maintenance and repair require tools and are manually demanding
Solution Approach 1:
The patent removes fasteners from the maintenance equation entirely. Without fasteners to loosen, remove, or replace, the maintenance process is dramatically simplified. The friction-fit connector members can be quickly released and replaced without tools, reducing maintenance complexity and effort while ensuring secure structural connections during service.
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 assembly extends the operational lifetime of connector members, reduces maintenance, and enhances installation efficiency while maintaining structural integrity and reducing weight.
Implementation Method 1
The sidewall coupling structure has a friction-fit portion configured to couple to the sidewall interface portion of the floor coupling structure
Implementation Method 2
The floor coupling structure includes a flexible design to absorb loads
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
An assembly (200, 302) for use in a vehicle cabin (100, 300) includes a floor coupling structure (202, 324) and a sidewall coupling structure (204, 310). The floor coupling structure includes a floor interface portion (206, 326) and a sidewall interface portion (208, 328) that extends transversely relative to the floor interface portion. The floor interface portion is configured to attach the floor coupling structure to a floor assembly (108, 304) of an internal cabin (100, 300) of a vehicle. The sidewall coupling structure has at least one friction-fit portion (212, 362) and a sidewall attachment section (214, 378). The sidewall attachment section is configured to couple the sidewall coupling structure to a sidewall assembly (126, 500) of the internal cabin. The at least one friction-fit portion is configured to couple to the sidewall interface portion of the floor coupling structure.