Electromagnetic Toothbrush Drive With Spring-Amplified Oscillation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric toothbrushes with mechanical drive trains are noisy and induce unwanted vibrations, which can be detrimental to the user's oral health experience.
Innovation Solution
An electromagnetic drive train with a magnetic assembly and a spring system that amplifies oscillation motion, reducing noise and vibrations while providing a fluid path for irrigation and brushing functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a mechanical drive train is used, then the toothbrush can provide oscillation motion, but it generates noise and unwanted vibrations
Solution Approach 1:
The patent replaces the traditional mechanical drive train with an electromagnetic drive system consisting of a magnetic assembly and electromagnets. This substitution eliminates mechanical contact and friction, thereby reducing noise and unwanted vibrations while maintaining the oscillation function.
Solution Approach 2:
The patent introduces a spring mechanism that dynamically amplifies the oscillation motion generated by the magnetic assembly. The spring system converts small electromagnetic oscillations into larger brush head movements, maintaining cleaning effectiveness while using a lighter, quieter electromagnetic drive.
2Productivity
If the oscillation amplitude is increased for better cleaning, then the cleaning effectiveness improves, but the noise and vibrations increase
Solution Approach 1:
The patent introduces a spring as an intermediary element between the magnetic assembly and the brush head. The spring amplifies small oscillations from the electromagnetic drive into larger brush head movements, enabling effective cleaning without requiring high-amplitude direct oscillation that would generate noise and vibrations.
Solution Approach 2:
The spring mechanism transforms the oscillation characteristics by introducing elastic deformation, converting small high-frequency electromagnetic oscillations into larger amplitude brush head movements through the spring's mechanical advantage and energy storage/release cycle.
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 electromagnetic drive train offers a quieter and more effective cleaning experience by providing powerful oscillation with reduced noise and vibrations, enhancing oral health outcomes.
Implementation Method 1
a magnetic assembly positioned within the housing and configured to impart an oscillation motion to the output shaft
Implementation Method 2
the spring twists as the magnetic assembly oscillates the output shaft to amplify the oscillation motion of the output shaft generated by the magnetic assembly
Data Source
AI summary
The present disclosure relates generally to oral health products, such as electric toothbrushes. In one example, the electric toothbrush includes a housing, an output shaft positioned within and extending out of the housing, a magnetic assembly positioned within the housing and configured to impart an oscillation motion to the output shaft, and a spring positioned within the housing. The spring includes a first end non-rotatably coupled to the housing and a second end non-rotatably coupled to the output shaft, such that the spring twists as the magnetic assembly oscillates the output shaft to amplify the oscillation motion of the output shaft generated by the magnetic assembly.