Pen-Stylus Shock Absorber Structure for Force Sensor Protection
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Solution Overview
Problem
Conventional pen-styluses lack adequate safety features to protect against mechanical shocks and excess forces, which can reduce their service life and functionality.
Innovation Solution
Incorporation of a writing shaft impact shock absorber, deformable marker tip, writing shaft safety stop, writing shaft bottom bracket, and eraser shaft impact shock absorber to absorb and dissipate excess forces, enhancing the pen-stylus's durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pen-styluses are used without additional safety features, then the device structure remains simple, but the service life and reliability are reduced due to mechanical shocks and excess forces
Solution Approach 1:
The patent implements shock absorbers positioned between the marker tip and the force sensor, and between the eraser tip and the force sensor, to absorb mechanical shocks and excess forces before they reach the force sensor. This beforehand cushioning protects the force sensor from damage during drops or impacts, thereby extending the service life and improving reliability without requiring complete structural redesign
Solution Approach 2:
The patent divides the pen-stylus into distinct functional segments: a body housing, a force sensor, a writing shaft with marker tip, and an eraser shaft with eraser tip. The shock absorbers are positioned at specific segments to isolate protective functions from sensing functions. This segmentation allows the force sensor to remain protected while maintaining the overall structural integrity and functionality of the pen-stylus
2Reliability
If shock absorbers and safety features are added to protect the force sensor, then the service life is extended, but the device complexity increases
Solution Approach 1:
The patent combines the shock absorber function with the existing structural elements of the pen-stylus. The shock absorbers are integrated into the writing shaft and eraser shaft assemblies, merging the protective function with the existing mechanical structure rather than adding completely separate protective systems. This reduces the increase in device complexity while maintaining operational reliability
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 safety features extend the service life and operational reliability of the pen-stylus by protecting it from mechanical shocks and excess forces, ensuring consistent performance and precision.
Implementation Method 1
a writing shaft impact shock absorber that receives excess forces imparted to the pen-stylus to shield the force sensor from receiving such excess forces
Implementation Method 2
a marker tip that receives excess forces and deforms its shape in absorbing the excess forces
Data Source
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AI summary
Embodiments of the invention provide a plurality of safety features for a pen-stylus. The pen-stylus may comprise a writing shaft that receives mechanical input forces as a user engages the pen-stylus on a display of a tablet device, a force sensor that translates mechanical input forces received from the writing shaft into electrical ones for operation by electronics in the pen-stylus; and a writing shaft impact shock absorber that receives heavy forces imparted to the pen-stylus to shield the force sensor from receiving such heavy forces. The heavy forces impacting the pen-stylus may arise from the pen-stylus being dropped onto a hard surface.