Sonic Vibration Toothbrush Head Arm Amplification

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Solution Overview

Problem

Conventional electric toothbrushes can damage teeth and gums due to strong rotating forces and have limitations in effectively cleaning teeth, especially when rotating in one direction.

Innovation Solution

A sonic vibration toothbrush design featuring a head with bristles implanted perpendicular to the axial direction, a motor-driven head arm with a truncated cone shape for amplifying sonic waves, adjustable vibration intensity through a control circuit and input buttons, and a handle with a display unit for user settings, minimizing noise and preventing toothbrush head breakage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional electric toothbrush uses strong rotating force to clean teeth, then cleaning effectiveness is improved, but teeth and gums may be damaged

Engineering Contradiction:

Improvecleaning effectivenessVSAvoiddamage to teeth and gums

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the conventional rotating mechanical system with a sonic vibration system. The motor generates rotational force that is converted into high-frequency linear vibrations of the brush head through an eccentric weight mechanism, eliminating the harmful rotational scraping action while maintaining effective cleaning through sonic oscillation at frequencies around 30,000 vibrations per minute

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent changes the fundamental operating parameter from rotational speed to vibration frequency. By controlling the motor to generate sonic vibrations rather than rotation, the system achieves effective plaque removal through high-frequency oscillation while reducing mechanical stress on teeth and gums. The control circuit enables adjustment of vibration intensity to optimize cleaning while preventing damage

Inventive Principle:

Principle #35Parameter changes

2Device complexity

If conventional electric toothbrush rotates bristles in one direction, then structure is simplified, but cleaning effectiveness is limited

Engineering Contradiction:

Improvestructural simplicityVSAvoidcleaning effectiveness

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The patent implements periodic bidirectional vibration through the sonic oscillation mechanism. The motor generates alternating vibrations that move the brush head forward and backward rapidly, creating a to-and-fro cleaning action that covers more tooth surfaces effectively while maintaining relatively simple structural components compared to complex multi-directional rotation mechanisms

Inventive Principle:

Principle #19Periodic action

3Productivity

If sonic vibration intensity is increased to improve cleaning, then cleaning effectiveness is improved, but noise increases and damage risk increases

Engineering Contradiction:

Improvecleaning effectivenessVSAvoidnoise and vibration damage

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent incorporates a control circuit that monitors and regulates the motor's operation to optimize vibration intensity. The control circuit adjusts the power delivery to the motor based on operating conditions, maintaining effective cleaning frequencies while preventing excessive vibration that would generate harmful noise or potential damage to the brush head or user tissues

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent implements adjustable vibration intensity through the control circuit, allowing the system to dynamically adapt its output. The brush head can operate at different vibration amplitudes and frequencies depending on user needs and conditions, optimizing cleaning effectiveness while minimizing noise and potential damage through flexible parameter adjustment rather than fixed high-intensity operation

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 sonic vibration toothbrush efficiently cleans teeth and gums by adjusting vibration intensity, minimizing noise and preventing damage, while ensuring optimal cleaning for various teeth types and reducing the risk of toothbrush head breakage.

Implementation Method 1

a sonic vibration toothbrush for cleaning teeth and oral cavity by vibrating bristles by means of sonic vibration

Methodology Applied

Scientific EffectSonic vibration: Vibration

Implementation Method 2

vibrating bristles by means of sonic vibration

Methodology Applied

Scientific EffectMechanical vibration: Vibration

Implementation Method 3

a head arm having an inner space to transmit a sonic wave to the head and having a truncated cone shape

Methodology Applied

Scientific EffectSonic wave transmission: Sound

Data Source

PatentUS10888405B2Sonic vibration toothbrush

Publication Date: 2021.01.12 ONE STAR INT CO LTD

AI summary

A sonic vibration toothbrush includes a head extending in an axial direction with a plurality of bristles implanted at an outer circumference thereof in a direction perpendicular to the axial direction; a head arm having an inner space to transmit a sonic wave to the head. A top portion of the head arm where the inner space is narrowed is coupled to the head and a motor accommodating portion that accommodates a motor therein and transmits a sonic wave generated by a rotating force of the motor to the head arm. The toothbrush further includes a handle having a space for accommodating a battery; an input unit provided at the motor accommodating portion in a button form; a display unit provided at the handle; and a control circuit that controls the motor according to input information provided from the input unit.