Magnetic Head-Mounted Display Strap Interface

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Solution Overview

Problem

Conventional head-mounted displays often come with generic one-size-fits-all strap systems that may not fit users comfortably and can become worn or dirty, necessitating replacement.

Innovation Solution

A magnetically detachable strap interface system that includes a strap with electrical accessories and a mount with a magnetic element, allowing for easy attachment and detachment from the head-mounted display while maintaining electrical connectivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional strap system is used, then the head-mounted display can be held on the user's head, but the strap becomes worn and dirty over time, necessitating removal and replacement

Engineering Contradiction:
Improvestrap durabilityVSAvoidstrap replacement
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The strap system is divided into separate modular components including the headband, straps, and interface mount that can be independently removed and replaced. This segmentation allows users to replace only the worn strap components without replacing the entire head-mounted display unit.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The strap system incorporates dynamic magnetic coupling that allows for easy attachment and detachment. The magnetic interface enables the strap to be dynamically connected or disconnected from the head-mounted display by simply bringing the components close together, making replacement simple and tool-free.

Inventive Principle:
Principle #15Dynamics

2Ease of manufacture

If a generic one-size-fits-all strap system is used, then the head-mounted display can be shipped with a standard strap, but the strap may not fit all users equally well or suit individual stylistic tastes

Engineering Contradiction:
Improvestandardized strap productionVSAvoidstrap customization
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The strap system is segmented into interchangeable modules including different strap styles, patterns, and configurations that can be separately manufactured and then combined with the standard head-mounted display interface, allowing both mass production efficiency and user customization.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The magnetic interface mount serves as a universal connection point that works with multiple different strap types and styles. This universal interface allows a single standardized mounting mechanism to accommodate various strap configurations, patterns, and designs.

Inventive Principle:
Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If an electrical accessory is integrated into the strap, then the accessory can be connected to the head-mounted display, but the connection requires both mechanical coupling and electrical connectivity

Engineering Contradiction:
Improveelectrical accessory integrationVSAvoidconnection mechanism
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The interface mount combines mechanical coupling and electrical connectivity into a single integrated magnetic coupling mechanism. When the strap with electrical accessory is brought near the head-mounted display, the magnetic attraction simultaneously achieves both mechanical attachment and electrical connection, eliminating the need for separate connection steps.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The magnetic coupling mechanism replaces traditional mechanical fastening systems (screws, clips, or latches) with a magnetic field-based attachment system. This substitution simplifies the connection process to merely bringing components close together, while the magnetic force automatically maintains both mechanical and electrical connectivity.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables users to replace worn or unsuitable strap systems with customizable options that better fit individual needs, ensuring a secure and comfortable fit while allowing for easy maintenance and upgrade of electrical accessories.

Implementation Method 1

a magnetic element that magnetically couples the interface and the opposing interface of the head-mounted display and enables the interface to be decoupled from the opposing interface of the head-mounted display

Methodology Applied
Scientific EffectMagnetic attraction: Magnetism

Implementation Method 2

the magnetic element may include a ferromagnetic element, and the opposing magnetic element may include a magnet that applies an attractive magnetic force to the ferromagnetic element

Methodology Applied
Scientific EffectMagnetic force: Magnetism

Data Source

PatentUS10663737B1Apparatus, systems, and methods for magnetically detachable head-mounted-display strap interfaces
Publication Date: 2020.05.26 META PLATFORMS TECHNOLOGIES LLC
  • US10663737B1 patent drawing
  • US10663737B1 patent drawing
  • US10663737B1 patent drawing

AI summary

A magnetically detachable head-mounted-display strap-interface apparatus may include (1) a strap that includes an electrical accessory that necessitates an electrical connection to a head-mounted display and (2) a mount coupled to the strap that includes (a) an interface that is mateable and demateable to an opposing interface of the head-mounted display, (b) an electrical connector that is configured to provide the electrical connection from the electrical accessory to the head-mounted display when contacting an opposing electrical connector of the head-mounted display, and (c) a magnetic element that magnetically couples the interface and the opposing interface of the head-mounted display by attracting an opposing magnetic element of the head-mounted display and enables the interface to be decoupled from the opposing interface of the head-mounted display and the electrical connector to be disconnected from the opposing electrical connector. Various other detachable head-mounted-display strap-interface devices, systems, and methods are also disclosed.