Expansion Window Module Stop Structure for Drop-Resistant Phones

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Solution Overview

Problem

Conventional mobile electronic devices with expansion units are prone to malfunction or damage due to collisions and falls, as functional modules retract under external forces.

Innovation Solution

Incorporating a stop element within the expansion unit that abuts against the functional module to prevent retraction and protect it from external forces, combined with a waterproofing structure to enhance durability and functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If an expansion unit with functional module is added to expand device functions, then device functionality is improved, but the expansion unit becomes susceptible to collision and fall damage

Engineering Contradiction:

Improvedevice functionalityVSAvoidexpansion unit stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent applies preliminary anti-action by pre-installing a stop element within the expansion unit that proactively prevents the functional module from retracting under external forces. This stop element is positioned in advance to counteract the harmful retraction motion before it can occur during collision or fall events, thereby maintaining the expansion unit's reliability while preserving its functional expansion capability

Inventive Principle:

Principle #9Preliminary anti-action

2Ease of operation

If the functional module is made retractable to enable expansion unit removal, then ease of operation is improved, but the module becomes vulnerable to external forces during retraction

Engineering Contradiction:

Improveexpansion unit removabilityVSAvoidexternal force damage

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent implements beforehand cushioning by placing a stop element that acts as a protective barrier before the functional module can be damaged during retraction. This stop element is pre-positioned within the expansion unit to cushion and prevent harmful retraction motion under external forces, allowing the module to remain retractable for ease of operation while being protected from damage

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Data Source

PatentUS12117873B2Mobile electronic device

Publication Date: 2024.10.15 GETAC TECH CORP

AI summary

A mobile electronic device includes a main framework, a back cover, a door cover, a functional module and a stop element. The back cover covers the main framework and has an expansion window. The door cover covers the expansion window. The functional module is disposed on an inner side of the door cover and electrically connected to a motherboard in the main framework. An operation interface corresponding in position to an outer side of the door cover is disposed on one side of the functional module. One side and the other side of the functional module oppose each other. The stop element is disposed on the inner side of the door cover, abuts against the other side of the functional module, and thus prevents the functional module from retracting under an external force. Therefore, the mobile electronic device is insusceptible to a collision and a fall.