Non-Circular Countersinks for Single-Tool Panel Assembly
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Solution Overview
Problem
Existing kits with circular-cylindrical countersinks require users to manipulate two tools simultaneously to secure fastening screws, making it difficult to set up assemblies quickly and efficiently.
Innovation Solution
The kit features countersinks with non-circular cross-sections on both sides of through-bores, allowing connecting elements to be secured against twisting with a single tool, simplifying the assembly process by using a single tool for connecting multiple panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circular-cylindrical countersinks with fastening screws and nuts are used, then connecting elements can be secured against twisting, but users must manipulate two tools simultaneously and both sides of panels must be accessible, making setup difficult
Solution Approach 1:
The patent combines the functions of the nut and the anti-twisting mechanism into a single integrated connecting element. The T-shaped槽 structure integrates the fastening function and the anti-twisting function into one component, eliminating the need for separate nuts and tools, thus resolving the contradiction between reliability and ease of operation
Solution Approach 2:
The patent uses asymmetric T-shaped槽 geometry in the countersink and corresponding T-shaped connecting element. The asymmetric shape provides inherent anti-twisting capability while maintaining simple single-tool operation, as the asymmetric geometry naturally prevents rotation without requiring complex dual-tool manipulation
2Device complexity
If circular-cylindrical countersinks are used, then the structure is simple, but setup time increases due to complex tool manipulation requirements
Solution Approach 1:
The patent maintains structural simplicity by using basic countersink geometry while combining multiple functions (fastening, anti-twisting, positioning) into the connecting element itself. This integration reduces assembly steps and tool manipulation time without significantly complicating the countersink structure
Solution Approach 2:
The T-shaped槽 and T-shaped connecting element design enables self-aligning and self-securing functionality. The asymmetric T-shape automatically prevents twisting and provides stable engagement, reducing the need for complex tool manipulation and decreasing assembly time
Data Source
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AI summary
The construction set has a parallelepipedic plate (10) provided with through bores (11) arranged on a square grid having specific grid dimension. Multiple counterbores (12a, 12b, 14) are arranged on both sides of the through bores for receiving a connecting element (30). Multiple plates are fastened by a fastening screw (60) and a nut, after inserting the connecting elements in respective counterbores. The cross-section of the counterbores deviates from a circular shape for rotationally securing the connecting element received in one of the counterbores.