Electric Toothbrush Motor-Driven Brush Head Mechanism
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Solution Overview
Problem
Conventional toothbrushing methods are inefficient and can cause damage to toothbrush bristles when cleaning between teeth and gums, and struggle to access hard-to-reach areas effectively.
Innovation Solution
An electric toothbrush design featuring rotating, swinging, and reciprocating brush heads with a motor-driven power transmitter and vibration generator, utilizing elastic toothbrush handles and multiple brush heads to improve accessibility and cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional manual toothbrushing methods are used, then tooth cleaning can be performed, but it takes a lot of time and repeating the regular actions is a difficult job
Solution Approach 1:
The electric toothbrush performs the brushing action automatically through motor-driven rotation and vibration of the brush head, eliminating the need for manual repetition of brushing motions. The device serves itself by using the motor to generate the necessary cleaning movements, freeing the user from the tedious task of manually repeating brushing actions.
Solution Approach 2:
The patent employs a vibration generator that causes the brush head to vibrate at high frequencies during operation. This mechanical vibration enhances the cleaning effectiveness by creating rapid oscillatory movements that improve plaque removal while reducing the time needed compared to manual brushing.
2Productivity
If the brush cleans between teeth and gums, then cleaning coverage is improved, but the toothbrush bristles can be stuck and damaged
Solution Approach 1:
The brush head is designed with dynamic movement capabilities including rotation, vibration, and angular swinging. These dynamic motions allow the brush to adapt to the contours of teeth and gums, enabling effective cleaning in hard-to-reach areas while the elastic material and motion control prevent bristles from becoming stuck or damaged.
Solution Approach 2:
The patent utilizes elastic material with specific elastic force properties for the brush handle, allowing it to deform and recover during operation. This parameter change in material elasticity enables the brush to navigate between teeth and gums effectively while maintaining bristle integrity and preventing damage.
3Ease of operation
If a single brush head is used, then device structure is simple, but accessibility to hard-to-reach areas is limited
Solution Approach 1:
The brush system is segmented into multiple functional components: a rotation mechanism for lateral surface cleaning, a vibration generator for enhanced cleaning action, and an angular swinging mechanism for accessing engaged surfaces. This segmentation allows each component to perform a specific function, improving overall accessibility to difficult areas while maintaining manageable device complexity through modular design.
Solution Approach 2:
The brush head assembly integrates multiple functions into a single unit capable of rotating, vibrating, and swinging at angles. This multi-functionality enables the brush to access and clean various tooth surfaces including lateral surfaces and engaged surfaces, improving ease of operation across different areas without requiring multiple separate brush heads.
4Productivity
If the brush rotates and swings at an angle, then cleaning efficiency is improved, but the mechanism complexity increases
Solution Approach 1:
The patent combines the rotation mechanism and angular swinging mechanism into an integrated system where a single motor drives both functions through interconnected mechanical linkages. The vibration generator is also merged with this system. This merging approach improves cleaning efficiency by providing multiple cleaning motions simultaneously while managing mechanism complexity through unified design rather than separate independent mechanisms.
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
Enhances tooth cleaning efficiency by preventing bristle damage, improving access to difficult areas, and facilitating thorough cleaning of both lateral and engaged surfaces of teeth.
Implementation Method 1
a vibration generator which is installed in the case between the motor and the toothbrush handle and reciprocates the toothbrush handle
Implementation Method 2
The toothbrush handle installed in the case may be formed of an elastic material having an elastic force
Data Source
AI summary
An electric toothbrush includes a case in which a motor is installed, at least one toothbrush handle, which is installed in the case, for rotating and swinging at a predetermined angle has a brush at a tip. A power transmitter, which is installed in the case between the motor and the toothbrush handle, rotates the toothbrush handle, and a vibration generator, which is installed in the case between the motor and the toothbrush handle, reciprocates the toothbrush handle.