Vibrating Wet Shaver With Adjustable Frequency Control Circuit
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing vibrating wet shavers lack the ability to adjust vibration frequency, which can affect user comfort during shaving.
Innovation Solution
Incorporating a control circuit that allows users to adjust the vibration frequency by varying the voltage applied to a DC motor-powered electric vibrator, using resistive devices and a switch or a potentiometer, enabling step-wise or continuous frequency adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a single-frequency vibrator is used, then the device structure is simple, but user comfort is reduced due to inability to adjust vibration frequency
Solution Approach 1:
The patent applies the dynamics principle by making the vibration frequency adjustable rather than fixed. The control circuit enables the vibration frequency to change dynamically based on user selection, transforming a static single-frequency vibrator into a dynamic multi-frequency system that adapts to different user preferences and shaving conditions.
Solution Approach 2:
The patent implements parameter changes by varying the vibration frequency parameter. The control circuit changes the operating parameters of the vibrator motor to produce different vibration frequencies, allowing users to select from multiple frequency options to optimize comfort and shaving performance for different scenarios.
2Adaptability or versatility
If multiple vibration frequencies are provided, then user comfort is enhanced, but the control circuit and device complexity increase
Solution Approach 1:
The control circuit implements dynamic frequency selection, allowing the vibrator to switch between multiple frequency settings. This dynamic capability enables the device to adapt to different user needs and shaving conditions, providing versatility without requiring multiple separate devices.
Solution Approach 2:
The control circuit achieves parameter changes by modifying the electrical parameters (voltage, current, or pulse width) supplied to the vibrator motor, thereby changing the vibration frequency. This approach allows multiple frequency settings to be achieved through electrical control rather than mechanical modifications, keeping the device structure relatively compact.
3Adaptability or versatility
If resistive devices and switches are used for frequency control, then frequency adjustment is enabled, but manufacturing complexity increases
Solution Approach 1:
The patent replaces complex mechanical frequency adjustment mechanisms with an electrical control system. Instead of using mechanical variable frequency drives or multiple motor speeds, the invention uses a control circuit with resistive devices and switches to electrically regulate the vibrator motor, simplifying the overall manufacturing process while maintaining frequency adjustability.
Solution Approach 2:
The control circuit achieves frequency adjustment by changing electrical parameters (resistance, voltage) supplied to the motor. This electrical parameter control method is more manufacturable than complex mechanical frequency control systems, as it uses standard electronic components that are easier to assemble and calibrate in production.
4Force
If a DC motor with eccentric mass is used, then vibration generation is effective, but energy consumption increases
Solution Approach 1:
The DC motor with eccentric mass generates vibration through partial action - the eccentric mass creates unbalanced centrifugal force that produces vibration. By carefully designing the eccentric mass configuration, the system achieves effective vibration force while minimizing excessive energy consumption, as the motor only needs to overcome the centrifugal force of the eccentric mass rather than generating full mechanical power continuously.
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
Enhances user comfort by allowing personalized vibration settings, improving the shaving experience through adjustable frequency options.
Implementation Method 1
an electric vibrator including a DC motor (12)
Implementation Method 2
the DC motor (12) is adapted to rotate an eccentric mass (15)
Implementation Method 3
the control circuit (9) is adapted to vary a voltage applied to the DC motor (12)
Data Source
AI summary
A vibrating wet shaver that includes a hollow handle, a shaving head borne by the handle, an electric vibrator fixed to the handle for transmitting vibrations to the shaving head through the handle, and a control circuit adapted to adjust a vibration frequency generated by the electric vibrator.