Asymmetric Stand Assembly for Tablet Stability
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Solution Overview
Problem
Existing stand assemblies for tablet PCs struggle to stably stand the device at an angle orthogonal to the placement surface when in a vertical position, limiting user flexibility and stability.
Innovation Solution
A stand assembly with a first arm, a second arm longer than the first, and a connecting section, all swingably hinged to the rear surface of the device, allowing for adjustable angles and improved stability by equalizing load distribution and incorporating magnetic attraction for easy folding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a stand assembly with two equal-length arms is used, then the device can be held horizontally stable, but the device cannot be stably positioned vertically at an angle orthogonal to the placement surface
Solution Approach 1:
The patent applies asymmetry by making the first arm longer than the second arm. This asymmetric configuration allows the stand assembly to achieve stable vertical positioning at angles orthogonal to the placement surface, which is impossible with equal-length arms. The longer first arm provides the necessary leverage and geometric configuration to maintain stability in the vertical orientation.
2Reliability
If the stand assembly is made rigid for stability, then positioning accuracy improves, but the ease of folding and storage decreases
Solution Approach 1:
The patent applies dynamics by incorporating swingable hinges at both the first joint (connecting the first arm to the device) and the second joint (connecting the second arm to the first arm). These hinges allow the stand assembly to transition between folded and extended states easily, while magnetic attraction provides stable positioning when extended. This dynamic design enables both easy operation for folding/storing and reliable stability when in use.
Solution Approach 2:
The patent replaces traditional mechanical locking mechanisms with magnetic attraction to maintain the extended position of the stand assembly. The magnetic force between the first and second arms provides sufficient holding power to maintain stability without requiring complex mechanical locks, thereby simplifying the structure and improving ease of operation while maintaining reliability.
3Adaptability or versatility
If the arms are made longer to improve vertical positioning, then the positioning range increases, but the device weight increases
Solution Approach 1:
The swingable hinge design allows the stand assembly to achieve extended positioning ranges without requiring permanently long arms. The dynamic extension capability enables the arms to reach longer effective lengths only when needed for positioning, while maintaining a compact folded state that minimizes weight and space requirements for portability.
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 the tablet PC to be stably positioned both horizontally and vertically at desired angles, with enhanced heat dissipation and user convenience through adjustable swing angles and magnetic folding.
Implementation Method 1
a magnetic section that attracts the first arm to the second arm when in the extended position
Data Source
AI summary
A stand assembly for a portable electronic device is disclosed. The stand assembly enables the portable electronic device to stand horizontally and vertically, as well as standing at an angle. The stand assembly includes a first arm swingably provided by a first hinge on a rear surface side of a chassis, a second arm swingably provided by a second hinge on the rear surface side of the chassis. The stand assembly also includes a connecting section that connects the first arm to the second arm 12, with the second arm being longer than the first arm.