Powered Wet-Shaving Razor Control and Safety
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Powered wet-shaving razors lack effective mechanisms for controlling vibration frequency, monitoring blade life, and preventing accidental motor activation, leading to inefficient shaving experiences and battery drainage.
Innovation Solution
The razor features a battery-powered system with a modular grip tube, variable speed control through a pulse-width modulator, blade-life indicators, and a locking mechanism to prevent accidental activation, ensuring optimal shaving performance and battery efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a battery-powered motor is provided for vibrating a shaving cartridge, then shaving functionality is enabled, but accidental motor activation and battery drainage occur
Solution Approach 1:
The patent implements a travel lock mechanism that must be disengaged before the motor can operate. This preliminary action prevents accidental activation during storage or transport by requiring a deliberate user action (engaging/disengaging the travel lock) before the shaving function becomes accessible, thus resolving the contradiction between enabling functionality and preventing accidental activation
2Productivity
If vibration frequency control is added to optimize shaving performance, then shaving efficiency improves, but device complexity increases
Solution Approach 1:
The patent incorporates a variable speed control mechanism with multiple vibration frequency settings that allow the user to dynamically adjust the motor's operating characteristics. This dynamic adjustment capability enables optimization of shaving efficiency for different hair types and shaving preferences while maintaining a relatively simple control interface, thus resolving the contradiction between improved productivity and increased device complexity
3Measurement precision
If blade life monitoring is implemented, then maintenance timing is optimized, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent implements a blade life monitoring system that tracks usage parameters and provides feedback to the user about cartridge wear and replacement needs. This feedback mechanism allows for optimized maintenance timing, preventing both premature and delayed cartridge replacement, while the system is designed to be integrated into the existing razor structure to minimize manufacturing complexity
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 provides customizable vibration frequencies, accurate blade-life monitoring, and prevents accidental motor activation, resulting in improved shaving efficiency and extended battery life.
Implementation Method 1
variable speed control through a pulse-width modulator
Data Source
Figure 1~1B
Figure 2~5
Figure 3
AI summary
A razor includes a load and a voltage conversion system coupled to a voltage source and the load for transforming a variable voltage provided by the voltage source into a constant operating voltage for driving a load. Further embodiments comprise: a user-operable switch and an arming switch; a usage indicator and a counter; a motor and a speed-controller; a force-sensing circuit.