Safety Razor Indicator and Power Switch Mechanism
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Solution Overview
Problem
Safety razors with electrical components often lack clear indicators of operational readiness, leading to unexpected movements and potential user shock, and there is a need for efficient battery power management to conserve energy.
Innovation Solution
A safety razor with an electrical arrangement including a light emitting diode or low frequency oscillation indicator on the handle to signal operational readiness, combined with a power switch that automatically connects and disconnects from a battery source based on the razor's storage state, ensuring the device is only active during use and conserving battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an electrical arrangement with vibration mechanism is included in the safety razor, then razor performance is improved, but battery power is consumed and user awareness of operational status is reduced
Solution Approach 1:
The patent employs a light-emitting diode (LED) that changes color or illuminates to indicate the operational status of the razor. When the vibration mechanism is activated, the LED provides visual feedback to the user, ensuring awareness of the device's state without interfering with the vibration function. This resolves the contradiction by maintaining both improved razor performance through the vibration mechanism and user awareness through visual indication.
2Ease of operation
If the electrical device is continuously connected to the battery, then operational readiness is maintained, but unnecessary energy consumption occurs
Solution Approach 1:
The patent implements a power switch that periodically connects and disconnects the electrical arrangement from the battery based on storage state. When the razor is stored in the holder, the power switch disconnects power to conserve battery energy. When removed from the holder, the switch automatically reconnects power to maintain operational readiness. This periodic connection and disconnection resolves the contradiction between maintaining operational readiness and minimizing unnecessary energy consumption.
3Ease of operation
If the razor is automatically activated upon removal from holder, then ease of use is improved, but unexpected movements may shock the user
Solution Approach 1:
The patent employs an indicator (LED) that activates before the vibration mechanism begins operation. When the razor is removed from the holder, the indicator illuminates first to alert the user that the device is about to activate. This preliminary indication allows the user to prepare for the upcoming vibration, preventing shock from unexpected movements while maintaining the automatic activation convenience.
4Loss of energy
If a power switch is added to control battery connection, then energy conservation is improved, but device complexity increases
Solution Approach 1:
The patent implements a power switch that operates automatically based on the razor's position relative to the holder. The switch detects whether the razor is stored or in use and autonomously connects or disconnects power without requiring manual user intervention. This self-service approach minimizes energy waste through automatic power management while avoiding the added complexity of manual switching mechanisms.
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
Provides users with clear visual or auditory feedback on the razor's operational status, preventing sudden movements and minimizing unnecessary energy consumption by ensuring the device is only active when in use and stored properly.
Implementation Method 1
an indicator which produces a signal for indicating to a user that the electrical arrangement is connected to a source of electrical power
Data Source
AI summary
The invention relates to safety razors having blade units carried on a handle, an electrical arrangement including an electrically operated vibration device, and a control device for actuating the vibration device when the blade unit is moved into contact with or into close proximity to the skin of a person holding the razor, a battery accommodated in the handle, a switch for connecting the electrical arrangement to the battery, and optionally, a light emitting diode for illuminating a section of handle neck to indicate that the electrical arrangement is connected to the battery and ready to actuate the vibration device.