Shaving Head with Electrostatic Actuator for Angle Control
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Solution Overview
Problem
Conventional shaving razors lack automated and repeatable angle adjustment, leading to variability in shaving experience due to tolerance in blade holding slots and exerted shaving forces, and require a long learning curve for stable angle control.
Innovation Solution
A shaving head with a housing and cutting members featuring a base portion and blade mounting portion connected at an angle, where the cutting members are rotatable via an electrostatic actuator and piezoelectric sensor system for precise angle control, allowing for automated adjustment and stabilization of the shaving angle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual razors with exchangeable double edge blades are used to control shaving angle, then the ability to control shaving angle is improved, but the learning curve becomes long and difficult with unstable angle control
Solution Approach 1:
The patent replaces manual mechanical angle control with an automated electrostatic actuator system. The cutting member is rotated around an axis of rotation by an electrostatic actuator, eliminating the need for manual adjustment and providing stable, repeatable angle control without requiring user learning or experience.
Solution Approach 2:
The system performs self-adjustment of the shaving angle through the electrostatic actuator that automatically rotates the cutting member to the optimal angle, eliminating the need for user intervention and manual skill development.
2Adaptability or versatility
If conventional cartridge razors with fixed shaving angle are used, then the device simplicity is maintained, but the shaving angle adjustability is limited
Solution Approach 1:
The patent introduces dynamic angle adjustability to the cutting member through rotation around an axis of rotation. The electrostatic actuator enables the cutting member to be positioned at different angles relative to the shaving plane, transforming a static structure into a dynamically adjustable one.
Solution Approach 2:
The system changes the shaving angle parameter by rotating the cutting member to different angular positions. This allows the same device to operate at multiple shaving angles, providing adaptability without requiring multiple different razors.
3Adaptability or versatility
If manual angle adjustment mechanisms are used in cartridge razors, then the shaving angle adjustability is improved, but the automation and repeatability of angle adjustment deteriorates
Solution Approach 1:
The patent replaces manual mechanical adjustment mechanisms with an electrostatic actuator system that automatically rotates the cutting member. This substitution provides automated, precise, and repeatable angle adjustment, eliminating the limitations of manual mechanisms while maintaining adaptability.
4Measurement precision
If automated electrostatic actuator and piezoelectric sensor system are used for shaving angle control, then the precision and repeatability of angle control is improved, but the device complexity increases
Solution Approach 1:
The patent implements a feedback control system where piezoelectric sensors detect the position of the cutting member and provide signals to the electrostatic actuator to maintain the optimal shaving angle. This closed-loop feedback ensures precise and repeatable angle control despite variations in shaving conditions.
Solution Approach 2:
The piezoelectric sensor acts as an intermediary between the mechanical position of the cutting member and the control system. It converts mechanical displacement into electrical signals that can be processed by the control circuitry, enabling precise measurement and control.
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
Enables precise, repeatable, and customizable shaving angle control, matching user preferences for sensitivity and comfort, with features like pre-defined settings for easy rinsability and stability, reducing the learning curve and angle variability.
Implementation Method 1
the one or more base parts comprise an actuator which is configured to rotate the cutting member around the axis of rotation thereby varying a shaving angle of the blade
Implementation Method 2
through a combined electrostatic actuator and piezoelectric sensor system
Data Source
AI summary
In a first aspect, the present disclosure relates to a shaving head comprising:a housing,one or more cutting members, comprising a base portion and a blade mounting portion connected to the base portion and extending at an angle therefrom, wherein a blade with a cutting edge portion is connected to the blade mounting portion,one or more base parts configured to hold one cutting member and to couple it to the housing,wherein the base portion is arranged in the one or more base parts rotatably around an axis of rotation extending in parallel to the cutting edge portion, andwherein the one or more base parts comprise an actuator which is configured to rotate the cutting member around the axis of rotation thereby varying a shaving angle of the blade, wherein the shaving angle is an angle between a blade and shaving plane of the shaving head.