Electronic Device Housing Ledge and Button Support Structures

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Solution Overview

Problem

Electronic devices face issues such as displays not being placed close enough to device housing edges, oversized button mounting structures, wear on spring-loaded clips, and damage to display cover layers when dropped, due to inadequate housing configurations.

Innovation Solution

The design includes a housing with a protrusion supporting the display cover layer and flex circuit, a button structure with a dome switch supported by a screw, and a spring-loaded clip with a metal plate to prevent wear, along with support structures in the housing ledge gaps to secure the display and prevent damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If displays are placed close to device housing edges, then device size is reduced and aesthetics are improved, but display support becomes inadequate and display cover layer is subject to damage

Engineering Contradiction:

Improvedevice sizeVSAvoiddisplay support

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The housing ledge is segmented into multiple sections: a first ledge section that contacts the display cover layer and a second ledge section that contacts the display. This segmentation allows the housing to provide distributed support at different locations, enabling closer edge placement while maintaining adequate support for the display cover layer and display assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A display support structure is introduced as an intermediary element between the housing ledge and the display components. This support structure spans across the display cavity and provides additional support to the display cover layer and display, allowing the display to be positioned closer to the housing edges while preventing damage through enhanced support.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If button mounting structures are made smaller, then device size is reduced, but button operation accuracy and reliability deteriorate

Engineering Contradiction:

Improvedevice sizeVSAvoidbutton operation accuracy

Core Design Contradiction:

Volume of moving objectVSManufacturing precision

Solution Approach 1:

The button assembly incorporates a button support structure with specific geometric features (sloped surfaces, ledges) that are locally optimized for button operation. This localized structural optimization ensures accurate button actuation and reliable switch engagement while keeping the overall button mounting structure compact, thus reducing device size without compromising operational accuracy.

Inventive Principle:

Principle #3Local quality

3Device complexity

If spring-loaded clips are designed without additional protective structures, then device complexity is reduced, but clip components are subject to undesired wear

Engineering Contradiction:

Improveclip structureVSAvoidclip durability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

A metal plate is introduced as an intermediary component between the spring and the clip member. This metal plate acts as a wear-resistant interface that prevents direct contact between the spring and the clip member, thereby preventing undesired wear on the clip components while adding minimal complexity to the overall clip structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Shape

If display cover layer is placed close to housing edges, then device aesthetics are improved, but display cover layer is subject to damage when device is dropped

Engineering Contradiction:

Improvedisplay placementVSAvoiddisplay cover layer damage

Core Design Contradiction:

ShapeVSObject-affected harmful factors

Solution Approach 1:

The housing ledge is designed with a first ledge section that extends to contact the display cover layer at a position closer to the housing edge. This pre-positioned support structure provides beforehand cushioning and protection to the display cover layer, preventing damage during drop events while allowing the display to be placed closer to the edges for improved aesthetics.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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

This configuration allows for improved placement of displays near edges, accurate button operation, enhanced durability of clips, and reduced risk of display cover layer damage during drops by providing better support and protection.

Implementation Method 1

The hinge may have a torsion spring

Methodology Applied

Scientific EffectTorsion spring: Torsion Spring

Data Source

PatentUS10943748B2Electronic devices with component mounting structures

Publication Date: 2021.03.09 APPLE INC

AI summary

Electronic devices are provided that have components. A housing protrusion may be interposed between a display cover layer and display components. A button may have a button member. A support structure for a dome switch in the button may have a screw hole. A housing may have screw holes through which a screw passes. The screw may also pass through the screw hole of the support structure to hold the switch structure near the button member. A clip may have a spring. A metal plate may prevent the clip from becoming worn by the spring. A display may be mounted on a ledge in a device housing. The ledge may have gaps with supports and removed corners.