Stylus Pen Mounting Guide Unit with Elastic Retention
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Solution Overview
Problem
Existing stylus pen mounting devices in portable information devices allow foreign materials, such as water, to enter the casing due to gaps between guide openings and holders, increasing product cost and complicating assembly when additional attachments or springs are used to secure the stylus.
Innovation Solution
A stylus pen mounting apparatus with a guide unit having an open top and closed bottom, extended along the casing length, incorporates an elastic member at the outlet to prevent foreign material entry and securely retain the stylus using elastic force, maintaining a simplified design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple guide openings and holders are formed in the casing, then the stylus pen can be securely mounted and smoothly inserted/removed, but gaps between openings and holders expose the casing to foreign material intrusion
Solution Approach 1:
The guide holder is nested within the guide opening structure, with the guide holder positioned inside the guide opening. This nesting arrangement allows the guide holder to secure the stylus pen while the guide opening maintains a continuous closed structure that prevents foreign material from entering the casing interior.
Solution Approach 2:
The guide unit is designed with differentiated local structures: the guide opening provides a closed protective pathway, while the guide holder provides localized securing function. This local quality differentiation allows each component to perform its specific function without compromising the overall sealed structure.
2Reliability
If additional attachments or springs are installed to close gaps and secure the stylus pen, then the stylus pen mounting becomes more stable, but product cost increases and assembly process degrades
Solution Approach 1:
The guide holder integrates multiple functions into a single component: it provides stylus pen securing, guides insertion/removal motion, and maintains the closed structure. This merging eliminates the need for separate springs or additional attachments, reducing both cost and assembly complexity while maintaining mounting stability.
Solution Approach 2:
The guide holder serves multiple purposes simultaneously: it acts as a securing mechanism for the stylus pen, a guide for smooth insertion and removal, and a structural element that maintains the closed guide opening. This multi-functionality reduces the total number of components needed in the system.
3Object-affected harmful factors
If the guide unit has a closed bottom structure, then foreign material cannot enter the casing, but the stylus pen cannot be securely retained without additional components
Solution Approach 1:
The guide holder is nested within the closed guide opening structure, allowing the guide holder to provide stylus retention functionality while the closed guide opening prevents foreign material entry. The nested arrangement enables both functions to coexist without compromising either.
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 solution effectively prevents foreign material ingress into the casing, stabilizes the stylus pen insertion and removal, and reduces assembly complexity while maintaining a cost-effective and aesthetically simplified structure.
Implementation Method 1
incorporates an elastic member at the outlet to prevent foreign material entry and securely retain the stylus using elastic force
Data Source
AI summary
An apparatus for mounting in a secure manner a stylus pen in an information device, in which there are a casing and the stylus pen. A guide unit having an inlet and an outlet is configured to have an opened top at the inlet and a closed bottom at the outlet, extended along a length direction of the casing, for accommodating the stylus pen.