Handheld Device Input Integration with Passive Thermal Management
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Solution Overview
Problem
Integrating complex systems into a compact and reliable handheld electronic device that can withstand daily use presents technical challenges.
Innovation Solution
The device incorporates a housing with a front cover and input structures that include button members with touch- and strain-sensing elements, dome switches, and haptic actuators, along with thermal management systems using thermal bridges and diffusion members to manage heat and integrate camera and microphone modules efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple input structures (button member with touch-sensing element, strain-sensing element, dome switch) are integrated into a single input structure, then the device provides enhanced functionality and differentiated operations, but the structural complexity increases
Solution Approach 1:
The patent combines multiple input structures (button member with touch-sensing element, strain-sensing element, and dome switch) into a single integrated input structure. This merging allows the device to provide differentiated operations (first operation for light touch, second operation for force threshold, third operation for dome collapse) from one physical location, enhancing functionality while managing space in the compact device.
Solution Approach 2:
The integrated input structure serves multiple functions through different sensing mechanisms. The button member detects light touches via touch-sensing elements, the strain-sensing element detects force magnitude, and the dome switch detects pressed states. This multi-functionality allows a single structure to provide diverse input capabilities (zoom operations, image capture, audio recording) that would otherwise require separate buttons.
2Temperature
If thermal bridges and diffusion members are added to manage heat from camera and microphone modules, then thermal management improves, but device complexity increases
Solution Approach 1:
The patent introduces thermal bridges and diffusion members as intermediary components between the heat-generating camera and microphone modules and the heat dissipation pathways. These intermediaries conduct and distribute thermal energy from the modules to cooler regions of the device, managing temperature without requiring direct exposure of the modules to ambient air or water.
Solution Approach 2:
Instead of using active mechanical cooling systems (fans, pumps), the patent employs passive thermal management through thermal bridges and diffusion members that utilize thermal conduction and diffusion principles. This substitution of active mechanical systems with passive thermal pathways simplifies the overall device structure while effective managing heat from the modules.
3Volume of moving object
If the device maintains a compact form factor, then portability improves, but integrating complex subsystems becomes more difficult
Solution Approach 1:
The patent employs nested arrangements where the camera module, microphone module, and their associated thermal management components are integrated within the housing structure. The thermal bridges are embedded within the housing walls, and the modules are positioned in recessed areas, allowing compact packaging of multiple subsystems without increasing the external device dimensions.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement to pack components efficiently. The camera and microphone modules are positioned in different vertical and horizontal planes within the housing, with thermal bridges extending in multiple dimensions to reach heat sources and dissipation pathways. This dimensional optimization allows compact integration of complex subsystems.
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 provides a handheld device with enhanced functionality, durability, and thermal management, enabling seamless operation of multiple systems while maintaining a compact form factor.
Implementation Method 1
a dome switch configured to collapse in response to the force input satisfying a first force threshold
Implementation Method 2
a strain-sensing element coupled to the beam structure
Implementation Method 3
a touch-sensing element coupled to the button member
Implementation Method 4
The processing system may be configured to cause the haptic actuation system to produce a first haptic output
Data Source
AI summary
A portable electronic device may include a housing, a front cover, and a rear cover coupled to the housing. The rear cover may define a first portion of a rear exterior surface of the portable electronic device, a protrusion defining a raised sensor array region of the rear cover and a second portion of the rear exterior surface of the portable electronic device, a microphone port defined through the rear cover, a first camera hole defined through the protrusion, and a second camera hole defined through the protrusion. The portable electronic device may further include a camera assembly including a first lens assembly, and a second lens assembly, and a microphone module coupled to the rear cover along an interior surface of the rear cover and acoustically coupled to the microphone port, at least a portion of the microphone module positioned outside of the raised sensor array region.