Ribbed Protective Cover Structure for Head-Mounted Displays
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Solution Overview
Problem
Electronic devices such as watches and head-mounted devices have sensitive components that are vulnerable to damage during drops or collisions, and storing them away is cumbersome and impractical.
Innovation Solution
A protective cover with a cover layer and ribbed fabric sidewall that includes a foam layer, stiffener, and ribbed fabric to protect the device, featuring modified regions for buttons and pull tabs to facilitate easy attachment and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic devices are stored away in storage containers to protect sensitive components, then protection of sensitive components is improved, but ease of operation deteriorates due to cumbersome storage
Solution Approach 1:
The protective cover integrates multiple protective layers within a single structure: a foam layer for cushioning, a stiffener layer for structural support, and fabric layers for protection and aesthetics. These nested layers work together to provide comprehensive protection while maintaining a compact, wearable form factor that eliminates the need for separate storage containers.
Solution Approach 2:
The protective cover uses flexible fabric layers (including knit fabric and suede or microfiber materials) that can conform to the device shape and provide protection without rigid constraints. This flexibility allows the cover to protect sensitive components while remaining easy to wear and remove, solving the contradiction between protection and ease of operation.
2Reliability
If a protective cover with foam layer and stiffener is used to protect sensitive components, then protection is improved, but device complexity increases
Solution Approach 1:
The protective cover is divided into distinct functional segments: a foam layer for impact absorption, a stiffener layer for structural rigidity, and fabric layers for protection and comfort. This segmentation allows each layer to perform its specific function efficiently while maintaining overall simplicity through modular construction.
Solution Approach 2:
The protective cover combines multiple materials with different properties: foam (for cushioning), stiffener material (for structural support), and fabric materials (for protection and aesthetics). This composite structure provides comprehensive protection while managing complexity through the synergistic combination of materials rather than using a single complex material system.
3Ease of operation
If ribbed fabric sidewall with modified regions is used to accommodate buttons and pull tabs, then ease of operation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The ribbed fabric sidewall features modified regions with different rib configurations tailored to specific functional requirements: certain areas have ribs removed or reduced to accommodate buttons, while other areas maintain full ribbing for structural support. This local differentiation allows the cover to be easy to operate while managing manufacturing complexity through targeted modifications rather than uniform construction throughout.
Data Source
AI summary
A protective cover for a head-mounted device may include a cover layer and a ribbed fabric sidewall that together form a recess for receiving the head-mounted device. The cover layer may include a foam layer and a stiffener wrapped in fabric layers and may be configured to cover and protect an external display in the head-mounted device. The ribbed fabric sidewall may include a knit fabric layer and knit ribs on opposing sides of the knit fabric layer. The ribbed fabric sidewall may have a button receiving region and a pull tab region that are modified relative to other regions of the ribbed fabric sidewall by including fewer ribs, unfilled ribs, or ribs of different heights. A pull tab may hide a seam in the ribbed fabric sidewall. The seam may be formed from a filled pocket that provides a plush surface under the pull tab.