Head-Mounted Display Dual-Strap Module for Stable, Comfortable Fit
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Solution Overview
Problem
Existing head-mounted display devices face challenges in balancing device stability and comfort, with rigid brackets being difficult to fit diverse head sizes and soft straps being less stable and difficult to adjust tension.
Innovation Solution
A head-mounted display device featuring a dual-strap system, where one strap is elastic and conforms to the user's head for comfort, while the other is rigid and adjustable, providing stability and allowing rotation to avoid discomfort during different postures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rigid bracket is used to secure the head-mounted display device, then device stability is improved, but comfort and adaptability to different head sizes deteriorate
Solution Approach 1:
The securing system is divided into two separate straps instead of using a single rigid bracket. Each strap can independently adjust to different head sizes and shapes, while together they provide stable device securing. The first strap has an adjustable length mechanism that allows customization for different users, and the second strap complements it to distribute weight and maintain stability.
Solution Approach 2:
The straps incorporate adjustable length parameters through mechanisms such as buckles, sliders, or telescopic structures. This allows the length of each strap to be changed according to different head sizes and user preferences, maintaining both adaptability and stability. The adjustable parameters enable the same strap design to fit a wide range of head dimensions.
2Ease of operation
If a soft strap is used to secure the head-mounted display device, then comfort is improved, but device stability and tension adjustability deteriorate
Solution Approach 1:
The straps are constructed using composite materials that combine the softness and comfort of flexible materials (such as fabric or silicone) with structural elements that provide stability and adjustability (such as rigid buckles, metal sliders, or reinforced sections). This composite structure allows the straps to be comfortable against the skin while maintaining sufficient tension and device security.
Solution Approach 2:
The straps incorporate dynamic adjustment mechanisms that allow users to modify tension and length in real-time according to their comfort needs and activity level. The adjustable features enable the straps to transition between different tension states, providing both comfort during extended wear and stability during active use.
3Reliability
If a rigid bracket is used at the back of the head, then device stability is improved, but ease of operation for lying down deteriorates
Solution Approach 1:
The straps replace the fixed rigid bracket with flexible, adjustable straps that can dynamically adapt to different head positions and orientations. When the user lies down, the straps can be adjusted or repositioned to accommodate the changed head angle, maintaining both device stability and user comfort throughout various postures.
Solution Approach 2:
The adjustable nature of the straps allows users to modify the position, tension, and angle of the straps according to different usage scenarios including lying down. This parameter adjustability enables the same strap system to provide stable device securing whether the user is sitting, standing, or lying down.
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 dual-strap system offers a stable and comfortable wearing experience across various positions, including sitting and lying down, by combining the elasticity of one strap with the adjustability and rigidity of another, ensuring secure fit and user comfort.
Implementation Method 1
a first elastic portion (110E) extending from the first pivot portion (110C) to the second pivot portion (110D), wherein a length of the first elastic portion (110E) is elastically variable
Implementation Method 2
The third end is pivotally connected to the first pivot portion. The fourth end is pivotally connected to the second pivot portion.
Data Source
AI summary
Provided are a head mounted display device and a strap module thereof. The strap module includes a first strap and a second strap. The first strap has a first end, a second end, a first pivot portion, and a second pivot portion. The first end and the second end are respectively connected to opposite sides of a host. The first pivot portion and the second pivot portion are located between the first end and the second end. A length of a part of the first strap between the first pivot portion and the second pivot portion is elastically variable. The second strap has a third end and a fourth end. The second strap is rigid and has an adjustable length. The third end is pivotally connected to the first pivot portion. The fourth end is pivotally connected to the second pivot portion.