Multi-Material Head Mountable Display Chassis for Thermal and Weight Management
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Solution Overview
Problem
Current head mountable computer systems for augmented and virtual reality lack a robust and efficient structural design that balances weight reduction with durability and thermal management, leading to potential discomfort and performance issues during extended use.
Innovation Solution
A head-mountable display system featuring a chassis with an outer frame made of aluminum, an intermediate frame of magnesium alloy, and an inner frame of carbon fiber, along with insulation interfaces and a display assembly that includes multiple fans for thermal management, ensuring a lightweight yet durable and effective cooling system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If a single-material frame structure is used, then manufacturing is simpler, but weight reduction and durability are compromised
Solution Approach 1:
The frame structure uses composite materials with an outer frame of aluminum, intermediate frame of magnesium alloy, and inner frame of carbon fiber. Each material is selected for its specific properties: aluminum for structural integrity, magnesium alloy for weight reduction, and carbon fiber for strength-to-weight ratio. This composite approach achieves optimal weight reduction and durability while managing the increased structural complexity through systematic material selection and integration.
2Strength
If lighter materials are used throughout, then weight is reduced, but strength and durability decrease
Solution Approach 1:
Different regions of the frame structure are assigned different materials based on local requirements. The outer frame uses aluminum for overall structural strength, the intermediate frame uses magnesium alloy for weight reduction in non-critical areas, and the inner frame uses carbon fiber for high-strength applications where weight reduction is prioritized. This localized material assignment optimizes the balance between strength and weight reduction.
3Temperature
If multiple frames are integrated, then weight and thermal management improve, but assembly complexity increases
Solution Approach 1:
The frame structure is segmented into three distinct frames (outer, intermediate, and inner) that can be manufactured separately using optimized processes for each material. The aluminum outer frame, magnesium alloy intermediate frame, and carbon fiber inner frame can be produced using different manufacturing techniques suited to each material's properties. This segmentation enables specialized manufacturing while the integrated design provides thermal management benefits.
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 lightweight yet durable head-mountable display system that maintains performance and comfort during extended use by effectively managing heat and distributing weight, enhancing user experience in augmented and virtual reality applications.
Implementation Method 1
A head-mountable display system featuring a chassis with an outer frame made of aluminum, an intermediate frame of magnesium alloy, and an inner frame of carbon fiber, along with insulation interfaces and a display assembly that includes multiple fans for thermal management, ensuring a lightweight yet durable and effective cooling system.
Implementation Method 2
a display assembly that includes multiple fans for thermal management, ensuring a lightweight yet durable and effective cooling system
Implementation Method 3
insulation interfaces and a display assembly that includes multiple fans for thermal management
Data Source
AI summary
A head-mountable display includes a chassis assembly, including an outer frame including a first material and defining an internal volume, an intermediate frame disposed in the internal volume and coupled to the outer frame, the intermediate frame including a second material different than the first material and defining a first aperture and a second aperture, and an inner frame coupled to the intermediate frame between the first aperture and the second aperture, the inner frame including a third material different than the first material and the second material, and a display assembly coupled to the intermediate frame.