Electric Toothbrush Motion Control for Full-Surface Cleaning
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Solution Overview
Problem
Existing electric toothbrushes rely solely on high-frequency vibration for cleaning, leading to incomplete tooth cleaning as certain tooth parts are often missed.
Innovation Solution
An electric toothbrush control device with a control module, motor drive circuit, and motor module that allows for multiple working modes, including swing, vibration, and oscillation modes, enabling the motor to swing and vibrate at specific amplitudes and frequencies to simulate manual brushing and enhance cleaning coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electric toothbrush uses only high-frequency vibration for cleaning, then the cleaning force is strong, but the cleaning coverage is incomplete and tooth parts are easily missed
Solution Approach 1:
The patent applies dynamics by enabling the motor module to switch between different working modes (swing mode, vibration mode, and oscillation mode) dynamically. This allows the brush head to adapt its motion pattern based on different cleaning needs, thereby improving both cleaning efficiency and coverage without compromising either aspect
Solution Approach 2:
The patent changes the motion parameters of the motor module by adjusting the drive signal characteristics. In swing mode, low-frequency signals produce large-amplitude sweeping motions; in vibration mode, high-frequency signals produce small-amplitude vibrations; in oscillation mode, combined signals create oscillating motions. These parameter changes enable comprehensive tooth cleaning while maintaining strong cleaning force
2Device complexity
If the electric toothbrush uses only high-frequency vibration, then the motor operation is simple, but the cleaning completeness deteriorates
Solution Approach 1:
The patent makes the motor module multi-functional by enabling it to perform three different working modes (swing, vibration, and oscillation) using a single motor structure. The control module generates different drive signals to achieve various motion patterns, ensuring reliable and complete tooth cleaning without significantly increasing device complexity
Solution Approach 2:
The patent employs periodic action through controlled oscillations and vibrations. The motor module executes periodic swing motions, vibration cycles, or oscillation patterns depending on the selected mode. This periodic action ensures thorough cleaning of all tooth surfaces while maintaining relatively simple motor control 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
The device provides a variety of functional modes that allow users to switch cleaning techniques, ensuring comprehensive tooth cleaning by reducing the likelihood of missing tooth parts and improving user experience.
Implementation Method 1
a motor drive circuit, and a motor module... the motor drive circuit is configured to respond to the motor drive signal and drive the motor module to operate in the working mode
Data Source
AI summary
An electric toothbrush control device, an electric toothbrush, and a control method are provided. In the control device, a control module is connected to a motor drive circuit, the motor drive circuit is connected to a motor module. A control module generates a corresponding motor drive signal in response to a mode command carrying a working mode. The working mode includes a swing mode, a vibration mode, and an oscillation mode. The motor drive circuit drives a motor module to operate in the working mode in response to the motor drive signal, solving the problem that high-frequency vibration is only relied on to realize tooth cleaning, and tooth parts to be cleaned are easy to be omitted, resulting in incomplete tooth cleaning.