Compression Element Flow Section for Tolerance-Compensating Joints
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connecting assemblies for attaching force-absorbing structural parts face challenges in compensating for structural tolerances, leading to uneven load distribution and potential failure of compression elements due to overloading.
Innovation Solution
A connecting assembly with a compression element featuring a rod-like section having a reduced cross-sectional flow section, designed to plastically deform before the elastic limit of the material is reached, ensuring all elements contribute to load dissipation and preventing buckling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If compression elements are designed with uniform cross-section according to standards, then safety factors are satisfied, but structural tolerances cannot be compensated and load distribution becomes uneven
Solution Approach 1:
The compression element features a flow section with reduced cross-sectional area compared to the rod-like section. This local quality change allows the flow section to plastically deform and accommodate positional tolerances between structural parts, while the rod-like section maintains sufficient strength. The non-uniform cross-section enables tolerance compensation without compromising overall reliability.
Solution Approach 2:
The invention changes the cross-sectional area parameter along the length of the compression element. The flow section has a smaller cross-sectional area than the rod-like section, allowing it to yield plastically under load. This parameter change enables the element to absorb tolerance variations through plastic deformation while maintaining force-transmitting capability.
2Manufacturing precision
If tolerance compensation elements such as washers and levelling pastes are added, then positional tolerances can be compensated, but device complexity and assembly time increase
Solution Approach 1:
The invention extracts the tolerance compensation function from separate components (washers, levelling pastes) and integrates it directly into the compression element itself through the flow section. This eliminates the need for additional tolerance compensation elements, reducing device complexity while maintaining the ability to accommodate positional tolerances.
Solution Approach 2:
The flow section combines multiple functions into a single element: it serves as both the structural compression element and the tolerance compensation mechanism. By merging these functions, the invention eliminates separate tolerance compensation components and simplifies the overall assembly process.
3Reliability
If compression elements are designed to contribute equally to load dissipation, then uniform load distribution is achieved, but this requires high manufacturing precision to ensure all elements are properly attached
Solution Approach 1:
The flow section provides dynamic adaptability through plastic deformation. When structural tolerances cause uneven initial load distribution, the flow section yields plastically to redistribute loads, allowing all compression elements to eventually contribute to load dissipation without requiring precise initial positioning or attachment.
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 effectively compensates for structural tolerances, ensuring uniform load dissipation and prevents individual compression element failure, allowing for efficient and rapid structure assembly.
Implementation Method 1
the elastic limit of the material is exceeded in the flow section and the material in the flow section is plastically deformed under the exertion of compressive force
Data Source
AI summary
A connecting assembly for the force-transmitting attachment of a first force-absorbing structural part to a second force-absorbing structural part includes tensile force-transmitters, shearing force-transmitters and compressive force-transmitters. The compressive force-transmitters include at least one compression element with a rod-like section. The rod-like section is provided for arrangement in a joint between the structural parts. The rod-like section is made from a metallic material. The rod-like section has a flow section with a constant cross-sectional area which is reduced compared with the rod-like section. A structure includes a connecting assembly.