Magnetic Fastener Assemblies With Alignment Protrusions
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Solution Overview
Problem
Magnetic fasteners lack enhanced measures to prevent inadvertent detachment, which can lead to unintended separation of attached parts.
Innovation Solution
A magnetic fastener assembly with counterpart members that can be configured for aligned or non-aligned magnetic coupled engagement, featuring a retention protrusion and alignment protrusion to resist axial detachment and facilitate guided magnetic coupling, using ferromagnetic materials and attachment devices like rivets and bridging portions for secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If magnetic fastener members are designed for easy detachment, then ease of operation is improved, but reliability deteriorates due to inadvertent detachment
Solution Approach 1:
The magnetic fastener system dynamically transitions between two engagement states: aligned magnetic coupled engagement for easy attachment/detachment operation, and non-aligned engagement with mechanical interlocking for secure, inadvertent-detachment-resistant fastening. The system adapts its engagement mode based on operational needs.
Solution Approach 2:
The fastening function is segmented into two distinct modes: magnetic coupling for controlled engagement/disengagement and mechanical interlocking (protrusion-recess) for secure retention. This segmentation allows the system to provide both ease of operation and reliability through different mechanisms.
2Reliability
If magnetic coupling strength is increased to prevent detachment, then reliability is improved, but ease of operation deteriorates due to difficulty in separation
Solution Approach 1:
The alignment protrusion and reception recess act as intermediary mechanical elements that facilitate controlled engagement. When aligned, they guide the magnetic fasteners into proper positioning; when misaligned, they prevent engagement, providing a mechanical mediator between the magnetic coupling and the user's detachment action.
Solution Approach 2:
The alignment protrusion on one fastener member and the corresponding reception recess on the other create an asymmetric geometric relationship. This asymmetry ensures that only properly aligned fasteners can engage magnetically, preventing inadvertent detachment while maintaining ease of intentional separation through realignment.
3Manufacturing precision
If alignment features are added to guide magnetic coupling, then manufacturing precision is improved, but device complexity increases
Solution Approach 1:
The alignment function is merged with the magnetic coupling function. The alignment protrusion and reception recess are integrated into the same structural components that provide magnetic attachment, eliminating the need for separate alignment mechanisms and reducing overall device complexity while maintaining manufacturing precision.
Solution Approach 2:
The alignment protrusion and reception recess serve multiple functions: they guide the fasteners into proper alignment during engagement, prevent inadvertent detachment by requiring specific orientation, and provide mechanical interlocking. This multi-functionality reduces the need for additional components, keeping device complexity low.
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 magnetic fastener assembly effectively resists axial separation forces, ensuring secure attachment and preventing inadvertent detachment, while allowing for easy separation when needed, thus enhancing the reliability of magnetic fastening systems.
Implementation Method 1
Magnetic fasteners typically comprise counterpart fastener members of complementary magnetic properties which are attached on separate parts. In use, the separate parts are held together by magnetic fastening operation when the counterpart fastener members are in magnetic proximity.
Implementation Method 2
The separation force counters magnetic attraction force to separate the counterpart fastener members out of magnetic proximity.
Data Source
AI summary
A magnetic fastener assembly has counterpart magnetic fastener members that are in detachable magnetic coupled fastening engagement. The magnetic fastener assembly are configurable between an axes aligned magnetic coupled fastening engagement and axes nonaligned magnetic coupled fastening engagement. The counterpart magnetic fastener members are detachable when in the axes aligned magnetic coupled fastening engagement and not detachable when in the axes non-aligned magnetic coupled fastening engagement when subject to an axial separation force.