Coupling Belt Connection for Rotation-Proof Fixing
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Solution Overview
Problem
In aircraft construction, there is a need for a lightweight, easy-to-assemble connection that prevents rotation between components while withstanding mechanical stresses, as existing solutions often require complex configurations or high-torque resistance.
Innovation Solution
A connection arrangement featuring two connecting elements with coaxially oriented flanges and a coupling belt with opposing coupling elements that form a positive-locking connection, utilizing a joint-connecting rod with an axial external thread and an annular connection adapter for rotation-proof fixing, allowing for efficient assembly and material usage, including flexible materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a metal bracket or metallic clamp is used to fix components, then the connection can withstand high torques and provide rotation-proof fixing, but the weight increases and assembly becomes more complex
Solution Approach 1:
The connection system is divided into modular components: connecting elements with flanges, coupling belts, and coupling elements. This segmentation allows the use of lightweight materials for each component while maintaining the overall structural integrity and rotation-proof functionality through the distributed coupling mechanism.
Solution Approach 2:
The coupling belt acts as a flexible element that wraps around the connecting flanges, providing rotation-proof fixing without requiring rigid metal brackets or clamps. This flexible film approach significantly reduces weight while maintaining the necessary mechanical constraint.
2Reliability
If complex connection configurations are used to prevent rotation, then the connection reliability improves, but the ease of assembly deteriorates
Solution Approach 1:
The coupling elements are designed to be separable and attachable to the connecting flanges. This extraction principle allows the coupling belt to be easily installed and removed without permanently fixing the components, greatly simplifying assembly and disassembly operations while maintaining reliable rotational constraint when assembled.
Solution Approach 2:
The coupling elements are designed with self-aligning features that allow the coupling belt to automatically position itself correctly when installed on the connecting flanges. This self-service mechanism eliminates the need for complex alignment procedures or specialized assembly tools, improving ease of assembly while ensuring reliable positional fixing.
3Strength
If traditional rigid connection materials are used, then the strength and torque resistance improve, but the weight increases and material efficiency decreases
Solution Approach 1:
The connection system allows for the use of composite material structures where the coupling belt can be made from high-strength, low-density materials such as fiber-reinforced polymers. This enables the maintenance of torque resistance while significantly reducing the weight compared to traditional solid metal connections.
Solution Approach 2:
The design changes the material parameter selection from traditional heavy metals to lightweight materials with optimized mechanical properties. By carefully selecting materials with high specific strength (strength-to-weight ratio), the system achieves adequate torque resistance with minimal weight penalty.
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 solution provides a fast, simple, and lightweight rotation-proof connection that effectively fixes components in place, even under external influences, while allowing for the use of materials with low modulus of elasticity, such as plastics, and can be easily assembled without tools.
Implementation Method 1
coupling elements which are configured to form a positive-locking connection with the coupling elements of the two connecting elements for the mutual rotation-proof fixing of the two connecting elements
Implementation Method 2
The joint-connecting rod is provided with an axial external thread; wherein one of the connecting elements is configured as a connecting strut and the other connecting element is configured as a joint, a joint housing, a joint connection, or a connection adapter for attaching the connecting strut; wherein the connecting element configured as a connecting strut is provided with an axial threaded hole which is configured to receive the axial external thread of the joint-connecting rod
Data Source
Figure 1~3
Figure 4~5
AI summary
The present invention provides a connection system (1) comprising two connecting elements (2, 2') having a respective connecting flange (3, 3') on which a plurality of coupling elements (5) are arranged along a peripheral direction and which has a substantially round external profile; and comprising a coupling belt (4), on which a plurality of opposing coupling elements (6) are arranged which are configured to form a positive-locking connection with the coupling elements (5) of the two connecting elements (2, 2') for the mutual rotation-proof fixing of the two connecting elements (2, 2').