Aircraft Fuselage Frame-Stringer Connector for Rivet-Free Assembly
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Solution Overview
Problem
Current aircraft fuselage structures face challenges in simplifying the assembly process of frames and stringers, particularly in accessing and connecting these components at their intersections, often requiring riveting which can be complex and time-consuming.
Innovation Solution
A connector with a form-fitting design that includes a coupling structure to engage around the end region of the stringer, allowing for a hook-shaped or clamped connection, eliminating the need for riveting and simplifying assembly by using a base carrier with transverse and longitudinal webs to securely attach both the stringer and frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional riveting methods are used to connect frames and stringers, then the connection strength is sufficient, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The patent introduces a connector as an intermediary component that simplifies the connection between frames and stringers. Instead of directly riveting the frame and stringer together, the connector serves as a mediator with a receiving region that accommodates the stringer end and a connection region that attaches to the frame, reducing assembly complexity while maintaining connection strength
Solution Approach 2:
The connector is divided into distinct functional regions: a receiving region for the stringer end and a connection region for the frame. This segmentation allows each part to be optimized independently and simplifies the overall assembly process by breaking down the complex connection into manageable components
2Reliability
If riveting is used to connect frames and stringers, then the connection is secure, but the process is time-consuming and labor-intensive
Solution Approach 1:
The connector is pre-designed with a receiving region that is specifically shaped to accommodate the stringer end. This preliminary preparation of the connection interface allows for quick insertion and positioning of the stringer into the connector, significantly reducing assembly time while ensuring proper alignment and secure connection
3Ease of operation
If complex riveting procedures are used to access hard-to-reach areas, then the frames and stringers can be connected, but the assembly process becomes difficult and time-consuming
Solution Approach 1:
The connector design allows for dynamic adjustment during assembly. The receiving region is designed to guide and accommodate the stringer end, allowing workers to easily position and secure connections even in hard-to-reach areas without requiring complex riveting procedures, thereby improving ease of operation and reducing assembly time
Data Source
AI summary
A connector for connecting a frame to a transversely extending stringer of a fuselage structure of an aircraft includes a base carrier extending in a longitudinal connector direction, a first connecting portion connected to the base carrier and extending in a first transverse connector direction, the first connecting portion having a coupling structure in an end region remote from the base carrier for engaging around an end region of a cross-section of the stringer, and a second connecting portion connected to the base carrier and adapted to be connected to the frame.