Wearable Head Strap Strengthening Assembly for Secure Attachment

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Solution Overview

Problem

Glasses-type head-mounted display devices often experience insufficient clamping force during intense movements, leading to a risk of the device falling off the user's head.

Innovation Solution

A head strap module with strengthening assemblies, comprising outer and inner covers that detachably connect to the host and head strap ends, providing structural reinforcement for a stable assembly connection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If temple legs of glasses-type head-mounted display device are used for clamping, then the device can be worn on the user's head, but the clamping force is insufficient during intense movements

Engineering Contradiction:
Improveclamping forceVSAvoiddevice stability
Core Design Contradiction:
ForceVSReliability

Solution Approach 1:

The head strap module is separated from the main host body and connected via detachable connecting ends, allowing independent optimization of the strap's clamping function without compromising the host structure. This segmentation enables the strap to provide additional clamping force while maintaining the host's original design integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The strengthening assembly features nested covers where the inner cover is positioned within the outer cover, and both are connected to jointly hold the connecting ends. This nested structure provides multi-layered reinforcement and protection at the critical connection points, enhancing overall assembly stability.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If additional head strap module is assembled to temple legs, then device stability is improved, but assembly connection stability may be compromised

Engineering Contradiction:
Improvedevice stabilityVSAvoidassembly connection stability
Core Design Contradiction:
ReliabilityVSStability of the object's composition

Solution Approach 1:

The strengthening assembly uses nested covers where the inner cover is positioned within the outer cover, and both are connected to jointly hold the connecting ends. This nested structure provides multi-layered reinforcement and protection at the critical connection points, enhancing overall assembly stability.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

The strengthening assembly combines multiple cover components (inner cover and outer cover) with connecting structures to form a composite assembly connection system. This composite approach distributes mechanical stresses across multiple elements, improving the overall stability and reliability of the connection between the host and head strap module.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS20250009081A1Wearable device and head strap module
Publication Date: 2025.01.09 HTC CORP
  • US20250009081A1 patent drawing
  • US20250009081A1 patent drawing
  • US20250009081A1 patent drawing

AI summary

A wearable device includes a host and a head strap module. The host has a pair of host connecting ends. The head strap module includes a head strap body and a pair of strengthening assemblies. The head strap body has a pair of head strap connecting ends. The pair of head strap connecting ends are respectively detachably assembled to the pair of host connecting ends. Each of the pair of strengthening assemblies has an outer cover and an inner cover. The outer cover and the corresponding inner cover are connected to each other to jointly cover and hold the corresponding host connecting end and the corresponding head strap connecting end. In addition, a head strap module applied to a wearable device is also provided.