Electric Toothbrush Head Motor Integration for Vibration Efficiency
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Solution Overview
Problem
Existing electric toothbrushes are inefficient in transferring vibrations to the bristle holder, requiring larger vibration motors and increased power, which results in increased size and noise, and reduced cleaning effectiveness.
Innovation Solution
The vibration motor is integrated into the head portion of the electric toothbrush, directly transferring vibrations to the bristle holder, reducing the size and thickness of the head portion, and stabilizing the motor with a fixing groove to enhance cleaning efficiency and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the vibration motor is installed in the grip and vibrations are transferred to the head portion, then the structure is simple and easy to manufacture, but the vibration transfer efficiency is low and the cleaning effectiveness is reduced
Solution Approach 1:
The patent inverts the conventional arrangement by moving the vibration motor from the grip to the head portion. This reversal places the vibration source directly at the cleaning interface, enabling direct vibration transfer to the bristle holder without intermediary transmission, thereby resolving the contradiction between manufacturing simplicity and vibration transfer efficiency.
Solution Approach 2:
The vibration motor is extracted from the grip and relocated to the head portion. This extraction eliminates the inefficient vibration transmission path through the grip and hand, allowing the motor to be positioned optimally for direct coupling with the bristle holder, thus improving vibration transfer efficiency while maintaining manufacturing simplicity.
2Power
If a larger vibration motor is installed to generate more vibrations, then the vibration power is increased, but the size of the toothbrush increases
Solution Approach 1:
The vibration motor is extracted from the grip and integrated into the head portion, allowing for the use of a smaller, more compact motor design. This extraction enables the motor to be sized appropriately for direct coupling with the bristle holder, providing sufficient vibration power without increasing the overall toothbrush size.
Solution Approach 2:
The patent applies local quality by concentrating the vibration function specifically in the head portion where it is most needed for cleaning. This localized placement allows for a smaller motor size since the vibrations are applied directly to the bristle holder without requiring transmission through the entire grip structure, thus maintaining compact dimensions while delivering adequate power.
3Force
If more power is supplied to the vibration motor, then the vibration strength is increased, but the energy consumption increases
Solution Approach 1:
The vibration motor is extracted from the grip and repositioned in the head portion, creating a direct coupling between the motor and bristle holder. This extraction eliminates energy losses associated with vibration transmission through the grip and hand, allowing more of the supplied power to be effectively converted into useful vibration strength at the cleaning interface, thereby improving energy efficiency.
Solution Approach 2:
The patent changes the spatial parameter of motor placement from the grip to the head portion. This parameter change optimizes the energy conversion efficiency by minimizing transmission losses, allowing the system to achieve the required vibration strength with lower energy consumption since the vibrations are generated directly at the point of application.
4Productivity
If the vibration motor is installed in the head portion, then the vibration transfer efficiency is improved and cleaning effectiveness is enhanced, but the device complexity increases
Solution Approach 1:
The patent merges the vibration motor with the head portion structure, integrating the motor directly into the cleaning assembly. This merging eliminates the need for separate vibration transmission mechanisms and coupling components, thereby improving vibration transfer efficiency while actually reducing device complexity compared to the conventional separated grip-motor-head configuration.
5Power
If a larger vibration motor is used, then the vibration power is sufficient, but the noise level increases
Solution Approach 1:
The vibration motor is extracted from the grip and relocated to the head portion, enabling the use of a smaller motor that generates sufficient vibration power through direct coupling. This extraction allows for reduced motor size and power consumption, which in turn reduces the noise level while maintaining adequate cleaning performance.
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 configuration allows for direct and efficient transfer of vibrations to the bristle holder, improving cleaning power, reducing energy consumption, and minimizing noise and size, while stabilizing the motor for effective operation.
Implementation Method 1
a vibration motor installed in the head portion... vibrations of a vibration motor are directly transferred to a bristle holder
Data Source
AI summary
The present disclosure relates to an electric toothbrush, and more particularly, to an electric toothbrush, which has excellent vibration efficiency since vibrations of the vibration motor are directly transferred to the bristle holder, saves the battery power, reduces a size of the toothbrush, decreases the thickness of the head portion, allows the vibration motor to be stably fixed in a fixing groove formed at the upper surface of the head portion, and reduces noise.