Mechanical connection arrangement for panels
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Solution Overview
Problem
Existing furniture assembly methods require tools, and there is a need for a tool-free mechanical connection solution that provides a tight fit between panels.
Innovation Solution
A mechanical connection arrangement using a rod-shaped element and corresponding insertion recess with deliberate angular misalignment, allowing for plastic and/or elastic deformation upon contact, resulting in a stronger connection without the need for tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional furniture assembly methods are used, then strong connections can be achieved, but tools are required and assembly becomes more complex
Solution Approach 1:
The connection mechanism performs the locking action automatically when panels are brought together. The rod-shaped element and insertion recess are designed to engage self-aligningly, with the panel surfaces guiding the connection elements into proper engagement without requiring external tools or manual intervention beyond positioning the panels.
Solution Approach 2:
The invention replaces traditional mechanical fastening systems (screws, nails, clips requiring tools) with a passive mechanical interference fit system. The connection is achieved through geometric constraints and elastic deformation of the rod-shaped element within the insertion recess, eliminating the need for tool-based mechanical fastening.
2Strength
If a tight fit between panels is achieved through deformation, then connection strength is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention intentionally introduces a controlled angular parameter difference between the rod-shaped element and insertion recess. This angular mismatch parameter is designed to create elastic deformation upon engagement, transforming a potential precision defect into a functional feature that enhances connection strength through mechanical interlocking and material deformation.
Solution Approach 2:
The connection elements are designed with asymmetric angular orientations rather than perfect alignment. The rod-shaped element extends at a different angle than the insertion recess axis, creating an asymmetric engagement that generates radial compression and friction forces to enhance the tight fit and connection strength.
3Ease of operation
If angular misalignment is introduced for easier assembly, then assembly ease is improved, but fitting precision may deteriorate
Solution Approach 1:
The invention converts the potential harm of angular misalignment (which would normally create gaps or poor fit) into a beneficial mechanism. The deliberate angular mismatch causes controlled elastic deformation of the rod-shaped element, which generates friction and mechanical interlocking forces that actually improve the tightness and precision of the final fit, while maintaining ease of assembly.
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 secure, tool-free connection between panels with improved fit and strength due to the deformation of the rod-shaped element and insertion recess, facilitating easier assembly and enhanced stability.
Implementation Method 1
allowing for plastic and/or elastic deformation upon contact, resulting in a stronger connection
Implementation Method 2
allowing for plastic and/or elastic deformation upon contact, resulting in a stronger connection
Data Source
AI summary
A mechanical connection arrangement for panels, includes a first panel, a second panel and a mechanical locking device for locking the first panel to the second panel. A surface of the first panel and a surface of the second panel are parallel and in contact in a locked position of the first and second panels. The mechanical locking device includes at least one rod-shaped element at said surface of the first panel and at least one corresponding insertion recess at said surface of the second panel. The rod-shaped element is configured to be inserted in the insertion recess. The rod-shaped element extends at a first angle from the surface of the first panel and the insertion recess extends into the second panel at a second angle from the surface of the second panel. The difference between the first angle and the second angle is between 0.5° and 6°.