Vehicle Seat Vibration Device With Damper Isolation

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Solution Overview

Problem

Existing vibration devices integrated into vehicle seats often interfere with other seat components and transmit unwanted vibrations to the support layer, causing noise and discomfort to passengers.

Innovation Solution

A vibration device with an attachment mechanism that securely attaches the vibrator to the back or underside of a support layer using a snap-fitting engagement and a damper to isolate vibrations, ensuring minimal interference with other seat devices and effective vibration transmission to the passenger.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the vibrator is directly integrated into the support layer, then vibration transmission to the passenger is effective, but the vibration device interferes with other seat components and causes unwanted noise

Engineering Contradiction:

Improvevibration transmission effectivenessVSAvoidinterference with other components and unwanted noise

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The support layer is segmented into multiple portions, with the vibrator attached to only a specific portion rather than the entire support layer. This segmentation allows vibration transmission to the passenger while isolating the vibrator from other seat components, reducing interference and unwanted noise.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

An attachment mechanism serves as an intermediary between the vibrator and the support layer. This intermediary component enables effective vibration transmission to the passenger while providing isolation and positioning that prevents interference with other seat components.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the vibrator is attached to the support layer, then vibrations are transmitted to the passenger, but vibrations are also transmitted to the support layer causing noise

Engineering Contradiction:

Improvevibration transmission to passengerVSAvoidvibration-induced noise

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The attachment mechanism is designed with localized vibration transmission properties - it transmits vibrations effectively in the direction toward the passenger while providing vibration isolation in other directions. This local quality differentiation allows effective notification without generating unwanted noise in the support layer.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The attachment mechanism utilizes materials or structures with specific vibration transmission parameters that favor transmission to the passenger while attenuating transmission to the support layer. By changing or optimizing these parameters, effective vibration notification is achieved without generating noise.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If the attachment mechanism securely fastens the vibrator to the support layer, then reliable attachment is achieved, but the assembly and disassembly process becomes complex

Engineering Contradiction:

Improveattachment reliabilityVSAvoidassembly and disassembly complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The attachment mechanism is designed as a separable component that can be easily removed from the support layer. This extraction capability allows the vibrator to be securely attached during operation while enabling simple assembly and disassembly for installation, maintenance, or adjustment purposes.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The attachment mechanism incorporates dynamic elements that provide secure fastening during normal operation but allow for easy release when needed. This dynamic design enables reliable attachment without permanently complexifying the assembly process.

Inventive Principle:

Principle #15Dynamics

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 solution allows for reliable attachment and effective vibration transmission to the passenger while minimizing vibration transfer to the seat components, reducing noise and enhancing passenger comfort.

Implementation Method 1

a damper which is in contact with this support layer and with the vibrator, and which is capable of reducing in this support layer the vibrations generated by the vibrator

Methodology Applied

Scientific EffectVibration damping: Damping

Data Source

PatentUS11312277B2Vibration device integrated into a seat

Publication Date: 2022.04.26 FAURECIA SIEGES D AUTOMOBILE SA

AI summary

The present disclosure relates to a vibration device configured to be integrated into a vehicle seat and comprising a vibrator capable of generating vibrations. This device further comprises an attachment mechanism capable of attaching the vibrator to the back or underside of a support layer integrated into a member of the seat, and a damper which is in contact with this support layer and with the vibrator, and which is capable of reducing, in the support layer, the vibrations generated by the vibrator.