Oral Brush Motion Control for Wider and Deeper Tooth Cleaning
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electric toothbrushes with fixed duty cycle vibrations have a poor tooth cleaning effect due to limited cleaning area and depth.
Innovation Solution
An oral nursing device with a control assembly that generates a driving signal to drive the output shaft of the actuation assembly to output alternating rotation angles and directions, utilizing pulse width modulation to adjust the duty cycle, mimicking human hand motion for thorough cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed duty cycle driving signal is used to drive the motor, then the control system is simple, but the tooth cleaning effect is poor due to limited cleaning area and depth
Solution Approach 1:
The patent applies dynamics by transitioning from a fixed duty cycle to a dynamic duty cycle that changes over time. The control assembly adjusts the duty cycle of the driving signal dynamically to produce alternating first and second driving signals, which create different rotation angles in opposite directions. This dynamic adjustment enables the brush head to perform sweeping motions that expand the cleaning area and improve tooth cleaning effectiveness without significantly increasing system complexity.
2Device complexity
If the brush head vibrates only at high frequency, then the motor design is simple, but the cleaning area and depth are limited
Solution Approach 1:
The patent implements periodic action by alternating between first driving signals and second driving signals in a periodic manner. The control assembly generates these alternating signals with different duty cycles, causing the output shaft to rotate by different angles in opposite directions during different time periods. This periodic alternation creates sweeping motions of the brush head that systematically cover a larger cleaning area while maintaining the high-frequency vibration for effective cleaning depth.
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 achieves enhanced tooth cleaning by expanding the cleaning area and depth through sweeping motions, improving the cleaning effect beyond conventional high-frequency vibrations.
Implementation Method 1
an actuation assembly at least partially accommodated in the grip portion, the actuation assembly including an output shaft engaged with the cleaning portion
Implementation Method 2
utilizing pulse width modulation to adjust the duty cycle
Implementation Method 3
a brush head is driven to generate high-frequency vibrations by a motor, so as to enable bristles to vibrate at a high frequency on surfaces of teeth
Data Source
AI summary
Embodiments of the present application relate to the field of oral nursing technologies, and disclose an oral nursing device, a control method, an electronic device, and a storage medium, which can effectively improve a tooth cleaning effect. A control assembly can drive an output shaft of an actuation assembly to output a cleaning motion by outputting a driving signal, so as to drive a cleaning unit to vibrate at a high speed, thereby cleaning teeth. Meanwhile, in one cleaning motion, the output shaft rotates by a certain angle in a first direction or a second direction.