Integrated Magnetic Retention for Hinge Assembly
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Solution Overview
Problem
Portable information handling systems face challenges in maintaining secure and efficient angular positions due to variations in user preferences and form factors, requiring effective magnetic retention mechanisms that minimize size and maximize functionality.
Innovation Solution
The integration of magnet assemblies in the main and lid housing portions, with strategically positioned magnets to provide both closed and tablet position magnetic coupling forces, utilizing a hinge assembly that adjusts y-axis and x-axis offsets to maintain the lid housing portion in desired configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnet assemblies are integrated in both lid and main housing portions, then magnetic retention in multiple positions is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple magnetic retention functions into a single integrated magnet assembly structure. The lid magnet assembly and main magnet assembly are positioned to work together as a unified system, allowing the display to be retained in multiple angular positions (closed position at 0 degrees and tablet position at 360 degrees) without requiring separate retention mechanisms for each position. This merging approach maintains reliable magnetic retention while reducing overall device complexity compared to using separate retention mechanisms.
2Force
If hinge assembly offsets are adjusted for optimal magnetic coupling, then magnetic retention force is improved, but hinge assembly size increases
Solution Approach 1:
The patent applies local quality by positioning the magnet assemblies at specific locations within the hinge assembly structure. The lid magnet assembly is positioned in the lid housing portion at a first position on the y-axis, while the main magnet assembly is positioned in the main housing portion at a second position on the y-axis. These localized positions are optimized to provide strong magnetic coupling forces in both closed and tablet positions without requiring the entire hinge assembly to be enlarged. The magnetic retention is concentrated at these specific local positions rather than requiring uniform distribution throughout the hinge assembly.
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 ensures robust magnetic retention in both closed and tablet positions, reducing the size of the hinge assembly while maintaining reliable user experience and portability by optimizing magnetic coupling forces based on rotational positions.
Implementation Method 1
a lid magnet assembly in the lid housing portion including a point on the lid magnet assembly closest to the hinge assembly in the tablet position that is located at a first position on a y-axis; and a main magnet assembly in the main housing portion including a point on the main magnet assembly closest to the hinge assembly in the tablet position that is located at a second position on a y-axis
Data Source
AI summary
A portable information handling system (IHS), including a housing having a main housing portion, a lid housing portion, and a hinge assembly rotatably coupling the main housing portion and the lid housing portion to rotate the lid housing portion through a plurality of angular positions relative to the main housing portion is disclosed. The plurality of positions include a closed position and a tablet position. The portable IHS further includes a lid magnet assembly in the lid housing portion including a point on the lid magnet assembly closest to the hinge assembly in the tablet position at a first position on a y-axis; and a main magnet assembly in the main housing portion including a point on the main magnet assembly closest to the hinge assembly in the tablet position at a second position on a y-axis, wherein the second position is approximately the same as the first position.