Rotating Fastening Element for Lightweight Panel Anchoring
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Solution Overview
Problem
Existing methods for introducing fastening elements into lightweight panels, such as those used in furniture or door production, face challenges due to the thinness of the panels, which makes them susceptible to mechanical stress and prone to damage from foreign bodies like chips and adhesive residues during the fastening process, leading to potential dents or breaches.
Innovation Solution
A method involving the rotation of the fastening element during insertion to displace foreign bodies, combined with the use of an expansion sleeve and adhesive activation, ensures secure anchoring by clearing debris from the contact surfaces and preventing damage to the panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fastening elements are pressed in without rotation, then the insertion process is simple and quick, but foreign bodies remain in the borehole causing damage to the lower ceiling and impaired anchoring strength
Solution Approach 1:
The fastening element is rotated during insertion to preliminarily displace foreign bodies from the borehole before the pressing-in process completes, preventing damage to the lower ceiling and ensuring proper anchoring contact surfaces are cleared of debris
Solution Approach 2:
The rotation mechanism converts the potentially harmful effect of foreign bodies (chips, adhesive residues) into a beneficial clearing action, where the rotating fastening element actively pushes debris away from critical contact zones, transforming the contamination problem into a self-cleaning process
2Ease of manufacture
If compressed air is used to clean the borehole, then foreign bodies are initially removed, but they settle again after air supply stops causing damage and reduced anchoring
Solution Approach 1:
The fastening element performs its own cleaning function during insertion by rotating to displace foreign bodies, eliminating the need for separate cleaning operations and ensuring continuous removal of debris throughout the insertion process rather than relying on preliminary cleaning that fails
Solution Approach 2:
The rotation occurs during the insertion process itself, preliminarily clearing the borehole of foreign bodies before the fastening element makes final contact with the lower ceiling, preventing damage and ensuring reliable anchoring from the start
3Ease of operation
If the suction lance diameter is smaller than the hole diameter, then the suction device can access the borehole, but it cannot guarantee removal of all foreign bodies
Solution Approach 1:
The fastening element itself performs the cleaning function during insertion, eliminating the need for external suction devices and their associated limitations regarding lance diameter and foreign body removal effectiveness
Solution Approach 2:
The rotation of the fastening element during insertion converts the limitation of not being able to pre-clean the hole into a benefit, where the insertion process itself actively clears debris through rotational motion, ensuring complete removal of foreign bodies regardless of initial contamination level
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
This method ensures reliable and damage-free insertion of fastening elements, providing stable anchoring without damaging the lightweight panel, even with thin ceilings, by displacing foreign bodies and ensuring proper contact with both the upper and lower panels.
Implementation Method 1
the fastening element is rotated during insertion into the hole in the workpiece in order to displace foreign bodies
Implementation Method 2
the fastening element has an expansion sleeve for fastening the fastening element in the workpiece
Implementation Method 3
the fastening element has an expansion sleeve for fastening the fastening element in the workpiece
Data Source
Figure 1~3
Figure 4~5
Figure 6~8
AI summary
The method involves inserting a borehole in an upper covering of a light building board. A fastening element (1) e.g. anchor bolt, is inserted into the borehole in the upper covering. The fastening element is rotated during insertion into the borehole in the light building board. An expansion sleeve (2) is provided in the fastening element for mounting the fastening element in a workpiece. A spreading device (3) is provided in the fastening element for partially spreading the expansion sleeve. The expansion sleeve and the spreading device are arranged fixedly to each other. An independent claim is also included for a device for implementing a method of inserting a fastening element in a light building board.