Tactile Vibration Generator Isolation Design

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Solution Overview

Problem

Conventional tactile vibration generators using piezoelectric elements are prone to breakage due to direct contact with supporting members, and the vibration is often transferred to these members, leading to inefficiency and potential damage.

Innovation Solution

A tactile vibration generator design featuring a vibration actuator attached to a vibration plate that is not in contact with the supporting block, allowing for effective vibration transmission without direct contact and reducing the risk of breakage, with a configuration that includes a supporting block, a vibration plate with distinct parts, and weights to enhance vibration and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the piezoelectric vibrator is directly contacted to the supporting member, then the structure is simple and easy to manufacture, but the piezoelectric vibrator is easily breakable and vibration is transferred to the supporting block

Engineering Contradiction:

Improvestructural simplicityVSAvoidpiezoelectric vibrator durability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent introduces a vibration plate as an intermediary component between the piezoelectric vibrator and the supporting block. The vibration plate is fixed to the supporting block while the piezoelectric vibrator is attached to the vibration plate, creating a layered structure that prevents direct contact between the vibrator and supporting block, thereby preventing vibration transfer and reducing breakage risk

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent divides the support structure into separate functional segments: the supporting block provides structural support, the vibration plate provides vibration isolation and transmission, and the piezoelectric vibrator generates vibration. This segmentation allows each component to perform its specific function independently, preventing the vibrator from being directly exposed to damaging contact with the supporting block

Inventive Principle:

Principle #1Segmentation

2Device complexity

If the piezoelectric vibrator is directly contacted to the supporting member, then the device complexity is low, but the vibration actuator is prone to breakage

Engineering Contradiction:

Improvestructural complexityVSAvoidvibration actuator durability

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The vibration plate serves as a protective intermediary layer that isolates the piezoelectric vibrator from direct contact with the supporting block. This intermediate structure prevents the vibrator from experiencing mechanical stress and vibration transfer that would otherwise cause breakage, while adding only minimal structural complexity

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the vibration actuator is attached to the supporting block, then the vibration transmission is direct, but the actuator is exposed to contact and flexural vibration transfer

Engineering Contradiction:

Improvevibration transmission efficiencyVSAvoidflexural vibration transfer to supporting block

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The vibration plate acts as a controlled intermediary that manages vibration transmission. It is fixed to the supporting block to provide stable mounting, while the piezoelectric vibrator attaches to the vibration plate to generate vibrations. This configuration ensures efficient vibration transmission to the intended target while preventing harmful flexural vibrations from transferring to the supporting block structure

Inventive Principle:

Principle #24Intermediary (Mediator)

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 design enhances the durability of the vibration actuator by preventing direct contact with the supporting block, reduces vibration transfer to the block, and maintains effective vibration transmission, thereby extending the lifespan of the tactile vibration generator while providing a cost-effective solution with improved tactile sensation.

Implementation Method 1

the vibration actuator 13 is a piezoelectric element 13

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Data Source

PatentUS11376629B2Tactile vibration generator

Publication Date: 2022.07.05 KYOCERA CORP

AI summary

A tactile vibration generator includes a supporting block, a vibration plate, and a vibration actuator. The vibration plate includes two parts. The vibration actuator is attached to a surface of the first part and the first part is not in contact with the supporting block to reduce transferring vibration to the supporting block. The second part is fixed to the supporting block.