Protective Case Switch Cover Mechanism

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Solution Overview

Problem

Existing mobile device cases fail to effectively protect and access mechanical switches while maintaining protection and aesthetics, especially as device sizes shrink, leading to reduced accessibility and potential damage from repetitive fingernail operation.

Innovation Solution

A switch cover that adjusts position to fit over the mobile device switch, moving in the same direction as the switch and providing external indication of its position, with an internal switch guide that engages the switch to maintain protection and accessibility without direct exposure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Object-affected harmful factors

If a depressible pass-through button is used on the case, then protection is improved, but accessibility and visibility of switch status deteriorate

Engineering Contradiction:

ImproveprotectionVSAvoidaccessibility

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent introduces a switch cover as an intermediary component between the user and the switch. The cover includes a guide that engages with the switch and translates user input into switch actuation, while also providing visual feedback through indicator alignment. This mediator maintains protection by covering the switch, yet enables accessibility through the guide mechanism.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Ease of operation

If pass-through holes or thin membranes are used for switches, then accessibility is improved, but protection and aesthetics deteriorate

Engineering Contradiction:

ImproveaccessibilityVSAvoidprotection

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent employs a thin, flexible membrane as the switch cover material. This membrane is sufficiently thin to allow the guide to engage and actuate the switch effectively, yet sufficiently intact to maintain protection and aesthetic appearance. The flexibility enables the cover to move with the guide while maintaining its protective function.

Inventive Principle:

Principle #30Flexible shells and thin films

3Ease of operation

If the switch cover is freely movable with minimal resistance, then accessibility is improved, but stability and precise positioning deteriorate

Engineering Contradiction:

ImproveaccessibilityVSAvoidpositioning stability

Core Design Contradiction:

Ease of operationVSStability of the object's composition

Solution Approach 1:

The patent incorporates visual feedback through indicators on the switch cover that align with corresponding indicators on the case when the switch is in specific positions. This feedback mechanism provides stable, discernible positional information to the user while the cover remains freely movable. The feedback creates stable reference points without constraining the cover's movement.

Inventive Principle:

Principle #23Feedback

Data Source

PatentEP2958455B1Protective case with switch cover

Publication Date: 2020.03.25 MOPHIE INC

Figure 1A~1B
Figure 2A~2B
Figure 3A

AI summary

A protective case can house a portable electronic device. The portable electronic device can have a switch (e.g., for switching an operational mode of the portable electronic device). The protective case can have a switch cover that engages the switch of the portable electronic device when the portable electronic device is in the protective case. The switch cover can be moved between positions corresponding to positions of the switch of the portable electronic device. As the switch cover is moved, the switch cover correspondingly moves the switch.