Nail Sleeve Preload Sealing for Insulation Fastening
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Solution Overview
Problem
Existing fastening methods for insulating materials to building substrates dissipate excess energy, leading to mechanical damage and poor sealing between fastening elements, particularly when using plastic fastening elements.
Innovation Solution
A method and device involving a nail with a sleeve on its shank, where the nail head and sleeve are positioned in a guide channel with a peripheral gap, allowing the sleeve to be compressed and plastically deformed during driving, creating a preload that enhances sealing by ensuring the nail head bears firmly against the sleeve.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If excess energy is dissipated in the fastening element and setting device during driving, then the driving force is sufficient to penetrate the substrate, but the fastening element and setting device are mechanically loaded and damaged
Solution Approach 1:
The sleeve acts as an intermediary element between the nail and the guide channel. It absorbs and distributes the mechanical stresses generated during the driving process, preventing direct transmission of excess forces to the fastening element and setting device, thereby reducing mechanical damage while maintaining sufficient driving force.
2Ease of operation
If the guide channel has an inside diameter exceeding the head diameter, then the nail can be driven in without friction interference, but a peripheral gap is formed between the nail head and guide channel reducing sealing
Solution Approach 1:
The sleeve fills the peripheral gap between the nail head and guide channel, acting as a sealing intermediary that prevents fluid or gas passage through the gap while allowing the nail to be driven smoothly without direct contact friction between the nail head and guide channel walls.
Solution Approach 2:
The sleeve functions as a flexible sealing element that can deform to accommodate the nail head while maintaining contact pressure to prevent leakage. This flexible shell approach provides effective sealing in the peripheral gap without compromising the smooth driving operation.
3Reliability
If the sleeve is compressed between the nail shank, guide channel and nail head, then sealing is improved through plastic deformation, but the sleeve material must withstand high compressive stresses
Solution Approach 1:
The sleeve material properties are specifically selected and engineered to undergo controlled plastic deformation under compressive stress. By changing the material parameters (selecting appropriate plastic materials), the sleeve can withstand the high compressive stresses during installation while achieving the desired sealing through permanent deformation.
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 improves sealing by applying a preload to the sleeve, preventing water penetration and ensuring secure fastening of insulating materials to building substrates, even with thermoplastic sleeves.
Implementation Method 1
the sleeve is compressed between the nail shank, the guide channel and the nail head while the nail moves toward the substrate... the sleeve is plastically deformed during the compression between the nail shank, the guide channel and the nail head
Data Source
AI summary
In a method for fastening a component, a nail having a nail shank and a nail head is provided, a sleeve is arranged on the nail shank, a driving-in element and a guide channel are provided, the nail head and the sleeve are arranged in the guide channel such that a peripheral gap is formed between the nail head and the guide channel, the driving-in element is driven through the guide channel toward the nail head in order to move the nail in a driving-in direction toward the substrate, the sleeve is compressed between the nail shank, the guide channel and the nail head while the nail moves toward the substrate, and a preload is applied to the sleeve by means of the nail head.