Insulation Board Fastening for Inspection Hatches
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Solution Overview
Problem
Existing inspection flaps with cover frames and insulating boards require high precision and complex manufacturing processes due to traditional screw-based fastening methods, which are cumbersome and difficult to implement effectively.
Innovation Solution
A form-fitting, irreversible fastening system using nails, pins, or clips is introduced into the insulating board, allowing for secure attachment with minimal effort, where the fastening means can only be removed with deformation, eliminating the need for screws.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screw-based fastening methods are used to attach the insulating board to the cover frame, then the connection is secure and reversible, but the manufacturing process becomes complex and requires high precision
Solution Approach 1:
The patent extracts the fastening function from the cover frame by introducing separate fastening means (nails, pins, or clips) that are inserted into the insulating board itself. This separates the structural support function (cover frame) from the fastening function (inserted fasteners), simplifying the overall manufacturing process while maintaining secure connection.
Solution Approach 2:
The patent employs simple, inexpensive fastening means such as nails, pins, or clips that can be easily inserted and provide sufficient holding power. These fasteners are designed for straightforward installation without requiring precise alignment or complex tools, reducing manufacturing complexity while ensuring reliable attachment of the insulating board.
2Ease of operation
If traditional screw fasteners are used, then the fastening is reversible and adjustable, but the installation process becomes cumbersome and time-consuming
Solution Approach 1:
The fastening means are designed to be pre-positioned or easily insertable into the insulating board before final assembly. This preliminary preparation eliminates the need for complex alignment and adjustment during installation, allowing workers to quickly secure the insulating board to the cover frame using simple insertion motions rather than time-consuming screw fastening operations.
3Manufacturing precision
If high precision manufacturing is required for screw-based fastening, then the connection accuracy is improved, but the production cost and complexity increase
Solution Approach 1:
The patent segments the fastening system into separate components: the cover frame, the insulating board with integrated fastening means, and the fastening elements themselves. This segmentation allows each component to be manufactured independently with standard tolerances, eliminating the need for high-precision machining that would be required for screw holes and threads, thereby simplifying the manufacturing process while ensuring proper fit and function.
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 solution simplifies the manufacturing process by providing a secure, irreversible connection between the cover frame and insulating board, enhancing ease of installation and reducing manufacturing complexity while maintaining structural integrity and insulation effectiveness.
Implementation Method 1
the fastening means is introduced into the insulating panel by at least one impulse. This impulse can be applied directly or indirectly to the fastener, for example by a hammer, and drives it at least partially into the insulating board
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The access panel (1) has a cover frame (4) in which an acoustic insulation board (2) is fitted. A fixing device (3) is incorporated in the insulation board. The access panel has a positive and irreversible connection between the insulation board and the cover frame. At least one blow is applied to incorporate the fixing device, which may be a nail, a pin, a staple or a part of the cover frame itself.