Vehicle Headrest Air Cell Structure for Adjustable Neck Massage

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Solution Overview

Problem

Existing headrests in vehicles often fail to effectively massage the occupant's neck muscles due to their fixed position, making it difficult to alleviate fatigue.

Innovation Solution

A headrest design featuring a slidable support portion and expandable air cells that can adjust position and apply pressure to the neck muscles, incorporating a driving unit for movement and air supply to enhance massage efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the headrest is designed with a fixed position, then the structure is simple, but the massage device cannot effectively massage the occupant's neck muscles

Engineering Contradiction:

Improvemassage effectivenessVSAvoidheadrest structure

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The headrest is designed with a slidable support portion that can move along the body portion, transforming the fixed structure into a dynamic one. This allows the massage device to adjust its position to effectively contact and massage the occupant's neck muscles, resolving the contradiction between structural simplicity and massage effectiveness.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The headrest is divided into distinct functional modules: a body portion, a support portion with sliding capability, and a massage device. This segmentation allows the support portion to independently adjust its position while maintaining the overall structural integrity, enabling effective neck massage without excessive complexity.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If the air cell volume is expanded toward the front of the headrest, then the massage coverage is improved, but the device complexity increases

Engineering Contradiction:

Improvemassage coverageVSAvoidair cell structure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The air cell is designed to expand toward the front of the headrest, serving dual functions: providing neck support and enabling massage coverage. This multi-functionality approach allows a single component to address multiple needs, improving massage coverage without proportionally increasing device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 adjustable headrest effectively massages the neck muscles, reducing occupant fatigue by providing customizable pressure and movement, thereby improving comfort.

Implementation Method 1

an air cell disposed on the support portion, where a volume of the air cell expands toward a front of the headrest

Methodology Applied

Scientific EffectAir pressure expansion: Pressure Increase

Data Source

PatentUS20250249811A1Headrest for vehicle seat with air cell

Publication Date: 2025.08.07 HYUNDAI MOTOR CO LTD

AI summary

A headrest for a seat of a vehicle includes a body portion disposed above a backrest portion; a support portion disposed in front of the body portion; and an air cell disposed on the support portion, where a volume of the air cell expands toward a front of the headrest, and the support portion is configured to be slidably movable along the body portion.