Deformable Fastener Structure for Rapid Repeated Demounting
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Solution Overview
Problem
Conventional fastening methods, such as using screws, make it difficult to easily couple and separate objects repeatedly and rapidly, as they often require significant effort to dismount and can damage the objects.
Innovation Solution
A fastener with a fitting portion, engaging portion, and filler portion that allows the fastener to be pressed into a sliding hole of an object, enabling material from the object to flow into the filler portion for secure fitting, with a die used to press the fitting portion against the object to facilitate easy engagement and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If screws are used to couple objects together, then the coupling strength is improved, but the ease of operation deteriorates because it becomes difficult to demount and separate objects repeatedly
Solution Approach 1:
The fastener is divided into distinct functional segments: a fitting portion that deforms to lock in place, an engaging portion that provides coupling strength, and a filler portion that receives material. This segmentation allows the fastening and engaging functions to be separated, enabling strong coupling while maintaining ease of demounting by simply removing the engaging portion.
Solution Approach 2:
The fitting portion undergoes dynamic deformation during installation, transitioning from a deformable state during insertion to a locked state after deformation. This dynamic behavior allows the fastener to achieve strong coupling strength through material deformation while maintaining reversibility for easy demounting.
2Reliability
If screws are used to fasten objects, then the reliability of coupling is improved, but the productivity deteriorates due to time-consuming installation and demounting processes
Solution Approach 1:
The fitting portion is pre-designed with specific deformation characteristics that automatically engage with the object material during insertion. The spreading hole portion is pre-configured to guide the material flow into the filler portion, eliminating the need for complex fastening operations and enabling rapid, reliable installation.
Solution Approach 2:
The fastener performs self-service by automatically deforming the object material through the fitting portion during insertion, which automatically locks it in place. The material itself flows into the filler portion to secure the engaging portion, eliminating the need for additional fastening steps and improving installation speed while maintaining reliability.
3Strength
If the fitting portion presses against the object to enable material flow into the filler portion, then the secure fit is improved, but the device complexity increases due to the need for a die and spreading hole portion
Solution Approach 1:
The fitting portion, filler portion, and engaging portion are merged into a single integrated fastener component. The spreading hole portion is merged with the object structure during installation. This merging reduces the number of separate parts and simplifies the overall system while achieving secure fitting through the coordinated action of the integrated components.
Solution Approach 2:
The object material itself acts as an intermediary, flowing from the spreading hole portion into the filler portion to secure the fastener. This eliminates the need for additional locking mechanisms or complex fastening structures, simplifying the device while maintaining strong fitting strength through the material's natural flow and 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
Enables rapid and repeated coupling and separation of objects without damage, as the fastener can be easily engaged and disengaged, maintaining a secure fit through the deformation of the object's material within the sliding hole.
Implementation Method 1
a material of the object to deform at the sliding hole, such that the deformed material blocks the sliding hole to stop the fitting portion, or allow a material of the object to enter or flow into the filler portion
Data Source
AI summary
A fastener and a method of mounting the same in place includes a fitting portion, an engaging portion and a filler portion. The fastener passes through a sliding hole of an object, and then the fitting portion presses against the object, allowing a material of the object to enter or flow into the filler portion, so as to fit the fastener and the object firmly together. The engaging portion is engaged with or removed from another object. Therefore, the fastener and the method can couple together and separate at least two objects repeatedly and rapidly.