Electric Toothbrush Connector Damping Mechanism
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Solution Overview
Problem
Existing electric toothbrushes experience high noise levels due to mechanical motion transmission during high-frequency vibration, which affects the cleaning effectiveness and longevity of the device.
Innovation Solution
An electric toothbrush connector with a pressing module and elastic member, including a torsion spring, U-shaped sleeve rod, and coil springs, that enhances the force transfer between the handle and toothbrush head, reducing noise and wear by effectively transmitting mechanical vibration energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical motion transmission is used to transmit vibration from driving handle to toothbrush head, then cleaning function is achieved, but noise is generated
Solution Approach 1:
A damping component is introduced as an intermediary element between the driving handle and toothbrush head. This damping component absorbs and dissipates vibration energy, reducing the transmission of mechanical motion that causes noise while still enabling the toothbrush head to perform cleaning function through controlled vibration.
Solution Approach 2:
The patent replaces part of the direct mechanical motion transmission system with a damping mechanism that uses material properties (viscoelasticity, friction) to control vibration transmission. This substitution reduces the harsh mechanical coupling that generates noise while maintaining the necessary vibration for cleaning.
2Productivity
If high-frequency vibration is used for cleaning, then cleaning effectiveness is improved, but wear on connector and handle increases
Solution Approach 1:
The damping component is pre-installed in the connector to provide cushioning protection before high-frequency vibration occurs. This beforehand cushioning absorbs shock and reduces peak stresses on the connector and handle, preventing wear and damage while allowing high-frequency vibration to proceed for effective cleaning.
Solution Approach 2:
The damping component changes the vibration parameters by filtering out harmful high-frequency components and attenuating peak vibrations. This parameter modification allows the system to operate at high frequencies for cleaning effectiveness while reducing the actual stress and wear through selective frequency attenuation.
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 solution effectively reduces noise and extends the service life of the electric toothbrush by improving the transmission of mechanical vibration energy and minimizing wear on the connector and handle, leading to enhanced cleaning performance.
Implementation Method 1
an elastic member, wherein the elastic member is connected to the connector body, and the pressing module is pressed against the pressing block groove
Implementation Method 2
the elastic member is a torsion spring, the elastic member includes a U-shaped sleeve rod, a first coil spring and a second coil spring respectively connected to two ends of the U-shaped sleeve rod
Data Source
AI summary
An electric toothbrush connector (100) includes a connector body (10), a pressing module (20) and an elastic member (30). A pressing block groove (101) is disposed in the connector body (10). The pressing module (20) is located in the pressing block groove (101). The clastic member (30) is connected to the connector body (10), and the pressing module (20) is pressed against the pressing block groove (101).