HMD Band Dynamics for Comfort and Stability
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Solution Overview
Problem
Conventional head-mounted display (HMD) apparatuses, especially the hard band type, have limited flexibility and comfort due to their inflexible design, which restricts the distribution of the device's weight and can cause strain on the user's head during wear.
Innovation Solution
The HMD apparatus incorporates a band with sensors and a processor that automatically adjusts its length and position to extend towards the back of the user's head, allowing for a more secure and comfortable fit by rotating from a folded state and adjusting tension using an adjusting wheel, enabling easy wearing and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a hard band type HMD apparatus is used, then the structure is more rigid and stable, but the flexibility and comfort are reduced due to limited movement freedom of the band
Solution Approach 1:
The band is designed with a dynamic structure that allows it to rotate from a folded state to an unfolded state, transitioning between different configurations to adapt to the user's head shape while maintaining structural integrity. The rotating mechanism enables the band to adjust its position and length dynamically.
Solution Approach 2:
The band is divided into multiple segments or sections that can move relative to each other, allowing the band to flex and adapt to different head shapes. This segmentation enables the band to maintain stability while providing the necessary flexibility and movement freedom.
2Stability of the object's composition
If the band is made inflexible to maintain structural stability, then the device weight is concentrated in one area, but this causes strain on the user's head
Solution Approach 1:
The rotating band mechanism allows the device to dynamically adjust its weight distribution by extending the band to the back of the user's head, spreading the load across a larger area of the head rather than concentrating it in one location, thereby reducing head strain while maintaining structural stability.
Solution Approach 2:
The rotating band acts as an intermediary mechanism that transfers and distributes the device weight from the front mounting area to the back of the user's head, reducing the concentration of force on any single point and thereby mitigating head strain.
3Adaptability or versatility
If the band is made flexible to improve comfort, then the degree of freedom in moving the band increases, but the structural stability is reduced
Solution Approach 1:
The band incorporates a rotating mechanism that provides controlled flexibility, allowing the band to move from a folded state to an unfolded state while maintaining structural integrity. This dynamic design enables the band to adapt to different head shapes without compromising overall stability.
Solution Approach 2:
The band is structured with segmented sections that can move relative to each other, providing the necessary flexibility for comfort while maintaining overall structural stability through the interconnected segments that work together to support the device.
4Ease of operation
If automatic sensing and adjustment mechanisms are added to the HMD apparatus, then the ease of wearing is improved, but the device complexity increases
Solution Approach 1:
The HMD apparatus incorporates sensors that automatically detect when a user approaches and triggers the band rotation and adjustment mechanisms without requiring manual operation. The device serves itself by autonomously adjusting to the user's head shape, improving ease of wearing while the complexity is managed through automated control systems.
Solution Approach 2:
The sensing mechanism provides feedback about the user's presence and head position, which automatically triggers the appropriate band adjustments. This feedback loop enables the device to self-adjust, improving ease of wearing while the control complexity is managed through automated response to sensor inputs.
Data Source
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AI summary
Provided are a head mounted display (HMD) apparatus and an operating method thereof. The HMD apparatus including: a band; at least one sensor; and a processor configured to control the HMD apparatus to, based on a user's face approaching an inside surface of the HMD apparatus being sensed by the at least one sensor, rotate the band from a folded state to an unfolded state extending toward the back of the user's head, and to adjust a length of the band in the unfolded state such that the band in the unfolded state comes in contact with the user's head.