Corner Joint Member With Auxiliary Insert For Profiled Tubular Rods
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Solution Overview
Problem
Corner joint members with welded mitred joints often exhibit irregularities and weak points, especially when forces or moments are applied, compromising the smoothness and strength of the assembly.
Innovation Solution
A corner joint member design featuring hollow profiled connector elements with oblique ends and an auxiliary insert, where the oblique ends form a seamless connection without welds, and internal welds between the insert and connector elements provide additional support, ensuring a smooth surface and enhanced strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If welded mitred joints are used to join profiled tubular rods, then the corner joint member can be assembled with standard welding processes, but irregularities and weak points arise that compromise surface smoothness and structural strength
Solution Approach 1:
The patent introduces an auxiliary insert as an intermediary component that fits inside the hollow profiled connector elements. This insert provides internal support and reinforcement during welding, preventing deformation and irregularities on the outer surface. The insert acts as a mediator between the welding process and the connector elements, allowing standard welding to proceed while maintaining surface smoothness and structural integrity.
Solution Approach 2:
The corner joint member is divided into separate components: hollow profiled connector elements and an auxiliary insert. This segmentation allows the insert to be placed inside the connector elements before welding, providing internal reinforcement without interfering with the external surface quality. The separated components can be manufactured independently and then assembled, resolving the contradiction between ease of manufacture and manufacturing precision.
2Ease of manufacture
If welded mitred joints are used to join profiled tubular rods, then the corner joint member can be constructed with conventional welding techniques, but the weld creates weak points that reduce strength when forces or moments are applied
Solution Approach 1:
The corner joint member is divided into separate components: hollow profiled connector elements and an auxiliary insert. This segmentation allows the insert to be placed inside the connector elements before welding, providing internal reinforcement without interfering with the external surface quality. The separated components can be manufactured independently and then assembled, resolving the contradiction between ease of manufacture and manufacturing precision.
Solution Approach 2:
The corner joint member combines different materials or structural forms by integrating an auxiliary insert within the hollow profiled connector elements. This composite structure leverages the strengths of both components: the connector elements provide the external framework and surface quality, while the auxiliary insert provides internal reinforcement to withstand forces and moments, thereby enhancing overall strength without compromising ease of manufacture.
3Manufacturing precision
If the oblique ends of hollow profiled connector elements are joined seamlessly without external welds, then surface irregularities are minimized, but additional internal support is needed to maintain structural integrity
Solution Approach 1:
The auxiliary insert serves as an internal intermediary structure that provides the necessary structural support without compromising the seamless external appearance. It mediates between the requirement for surface smoothness (no external welds) and the need for structural integrity, allowing the oblique ends to join cleanly while the insert reinforces the connection internally.
Solution Approach 2:
The solution moves the structural support function from the external dimension to the internal dimension by placing the auxiliary insert inside the hollow connector elements. This dimensional shift allows the external surface to remain smooth and seamless while the internal structure provides the necessary strength and support.
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 results in a corner joint member with minimal irregularities and increased strength, allowing for accurate angle connections and improved assembly stability by distributing forces effectively.
Implementation Method 1
improved assembly stability by distributing forces effectively
Implementation Method 2
internal welds between the insert and connector elements provide additional support
Data Source
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AI summary
The invention relates to a corner joint member for joining a first profiled tubular rod under an angle with a second profiled tubular rod. The corner joint member comprises a first profiled connector element having a first rod connecting end for connecting to the first rod and a second profiled connector element having a second rod connecting end for connecting to the second rod. The corner joint member in the connecting state further comprises an auxiliary insert arranged in the first-and second interior space, wherein an outer contour surface of the auxiliary insert contacts the first inner contour surface of the first profiled connector element as well as the second inner contour surface of the second profiled connector element. The corner joint member comprises element welds between the outer contour surface of the auxiliary insert and the first-and second inner contour surfaces.