Vibration Feedback Device Using Phase Shift to Limit Vehicle Body Vibration

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing in-vehicle devices with vibration functions transmit excessive vibrations to the vehicle body, causing unpleasant sensations and abnormal noises, which limits the ability to increase vibration levels for effective tactile feedback.

Innovation Solution

A device with a vibration function is designed to generate vibrations at a frequency that creates a phase difference of 90° or more between the device element and the vehicle body, thereby attenuating the acceleration transmitted to the vehicle body, using a spring-mass-damper system model to control vibration transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the device generates stronger vibrations to improve tactile feedback, then the vibration function effectiveness is improved, but the vibration transmission to the vehicle body increases causing unpleasant sensations and abnormal noises

Engineering Contradiction:

Improvetactile feedback effectivenessVSAvoidvehicle body vibration and noise

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a vibration isolation mechanism as an intermediary between the device and the vehicle body. This mediator absorbs and dampens the vibrations generated by the device, preventing them from being transmitted to the vehicle body while allowing the device to generate sufficient vibration for effective tactile feedback.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent converts the harmful vibration energy that would normally be transmitted to the vehicle body into a beneficial effect by using it to enhance tactile feedback. Through careful frequency selection and isolation mechanisms, the vibration energy is directed to where it is useful (providing tactile feedback) rather than where it causes harm (vehicle body transmission).

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

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

This approach effectively reduces the transmission of vibrations to the vehicle body, allowing for efficient device vibration without significant vehicle body vibrations or noise, thus enhancing tactile feedback quality.

Implementation Method 1

the vibration being at a frequency such that a phase difference between vibrations of the device element and the base is 90° or more

Methodology Applied

Scientific EffectPhase difference:

Implementation Method 2

an actuator configured to generate a vibration that vibrates the device element

Methodology Applied

Scientific EffectVibration: Vibration

Data Source

PatentUS20250387801A1Device with vibration function

Publication Date: 2025.12.25 ALPS ALPINE CO LTD

AI summary

A device with a vibration function includes a device element configured to be fixed to a base, and an actuator configured to generate a vibration that vibrates the device element, the vibration being at a frequency such that a phase difference between vibrations of the device element and the base is 90° or more.