Collapsible Beam Cushioning for Constant-Pressure Wearable Fit

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Solution Overview

Problem

One-size-fits-all wearable articles, such as helmets and head-mounted displays, cause discomfort due to increased pressure on the wearer's head as the foam compresses, especially during prolonged use, as they lack granular adjustment for varying head shapes and sizes.

Innovation Solution

A cushioning material with a lattice structure of collapsible beams that buckles and collapses in layers, maintaining a substantially constant reactive pressure over a specified range of compression, allowing for snug fit adjustment without increasing discomfort.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If traditional foam cushioning material is used in wearable articles, then the article can conform to the wearer's head shape, but the reactive pressure on the wearer's head increases as the foam compresses, causing discomfort

Engineering Contradiction:

Improveconformity to head shapeVSAvoidreactive pressure on head

Core Design Contradiction:

Adaptability or versatilityVSObject-affected harmful factors

Solution Approach 1:

The cushioning material uses a lattice structure with collapsible beams that change their mechanical properties through controlled collapse. As the lattice compresses, beams buckle and collapse in sequence, changing the structural parameters to maintain constant reactive pressure rather than allowing pressure to increase with compression depth.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite cushioning material combining rigid frame elements with collapsible beam lattice structures. This composite structure integrates the benefits of both rigid support and compliant cushioning, allowing the material to adapt to head shapes while maintaining pressure control through the lattice collapse mechanism.

Inventive Principle:

Principle #40Composite materials

2Ease of manufacture

If one-size-fits-all wearable articles are used, then manufacturing and distribution are simplified, but granular adjustment for varying head shapes and sizes is lost

Engineering Contradiction:

Improvestandardized productionVSAvoidadjustment to head variations

Core Design Contradiction:

Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The lattice-based cushioning material serves multiple functions within a single standardized component: it provides initial support, adapts to various head shapes through progressive collapse, maintains pressure control, and accommodates different head sizes. This multi-functionality eliminates the need for multiple sized articles while preserving customization benefits.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The cushioning material transitions from a static foam structure to a dynamic lattice system that evolves its configuration under load. The collapsible beams progress through controlled collapse states, allowing the same article to dynamically adapt to different wearers and head variations without requiring adjustment mechanisms.

Inventive Principle:

Principle #15Dynamics

3Reliability

If foam cushioning material is compressed to achieve snug fit, then the wearable article fits the wearer's head, but the increased pressure causes discomfort during prolonged wear

Engineering Contradiction:

Improvefit securityVSAvoiddiscomfort from pressure

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The cushioning material is segmented into individual collapsible beam elements arranged in a lattice pattern. This segmentation allows localized collapse of specific beams and cell structures while maintaining overall fit security, distributing the adaptation process across many small elements rather than requiring uniform compression of a solid foam block.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The lattice structure is pre-configured with collapsible beams designed to buckle at controlled stress levels. This beforehand cushioning mechanism ensures that as the article is tightened, the lattice progressively collapses to absorb compression while maintaining constant reactive pressure, preventing the discomfort that would result from continued pressure increase.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

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 cushioning material provides a comfortable fit by adjusting to individual head shapes and sizes, maintaining consistent pressure, reducing discomfort and preventing slippage, suitable for various wearable articles.

Implementation Method 1

The cushioning material includes a repeating pattern of collapsible beams that causes the cushion material to produce a substantially constant reactive pressure in response to compression of the cushion material

Methodology Applied

Scientific EffectElasticity: Elasticity

Data Source

PatentEP3629799B1Fit system using collapsible beams for wearable articles

Publication Date: 2026.01.28 MICROSOFT TECHNOLOGY LICENSING LLC

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AI summary

Disclosed is a fit system for improving users' comfort with wearable articles, such as head- worn articles. The fit system includes a lattice of collapsible beams that can be constructed of elastomer foam located at the interface between the wearable article and a part of the user's body. The collapsible beam construction provides a non-linear relationship between the amount of force or pressure applied on the body part and the amount of compression of the foam.