Adaptive Shaver Skin Engaging Surface for Doming Control
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Solution Overview
Problem
Existing shavers face challenges in controlling skin doming during shaving, particularly in dry shaving, where the direction of movement over the skin varies, leading to inconsistent shaving closeness and increased risk of skin damage.
Innovation Solution
A shaver with a skin engaging portion featuring a force-generating member, such as an electro-adhesive element, and a control system that adjusts the force of attraction based on real-time skin parameters measured by sensors, to selectively increase friction and reduce skin doming, regardless of the shaver's direction of movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the shaver is moved in multiple directions over the skin during dry shaving, then the shaving coverage is improved, but the skin doming control becomes inconsistent leading to increased cutting risk
Solution Approach 1:
The skin engaging surface is made dynamically adjustable through a force-generating member (such as an electro-adhesive element) that can change its attraction force in real-time. This dynamic adjustment allows the system to adapt to different shaving directions and skin conditions, maintaining consistent skin doming control regardless of movement direction.
Solution Approach 2:
A sensor measures skin parameters (such as skin doming, friction, or pressure) and provides feedback to a controller, which then adjusts the force-generating member's attraction force accordingly. This closed-loop feedback system ensures consistent skin doming control across multiple shaving directions by continuously adapting to real-time skin conditions.
2Reliability
If the force of attraction between the skin engaging portion and skin is increased, then skin doming is reduced, but the frictional force increases which may cause discomfort
Solution Approach 1:
The sensor continuously monitors skin parameters including friction and doming, providing feedback to the controller. The controller adjusts the force-generating member's attraction force based on this feedback, increasing it only when needed to reduce doming while decreasing it when friction becomes excessive, thus preventing discomfort.
Solution Approach 2:
The force-generating member provides dynamically adjustable attraction force rather than a static high friction surface. This dynamic capability allows the system to optimize the balance between skin doming reduction and friction-induced discomfort by adapting the force level to real-time skin conditions and user needs.
3Device complexity
If a static skin engaging surface is used, then the device structure is simple, but it cannot adapt to varying skin conditions and shaving directions
Solution Approach 1:
The skin engaging surface incorporates a force-generating member (such as an electro-adhesive element) that can dynamically adjust its properties in real-time. This dynamic feature enables adaptation to varying skin conditions and shaving directions while adding only moderate complexity to the overall device structure.
Solution Approach 2:
The integration of a sensor and controller creates a feedback system that automatically adapts the skin engaging surface to skin conditions. This feedback mechanism provides high adaptability without requiring complex manual adjustment mechanisms, as the system self-regulates based on real-time skin parameter measurements.
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 skin doming and enhances shaving comfort by providing precise control over skin friction, improving shaving closeness and safety across different shaving directions.
Implementation Method 1
the force-generating member comprises an electro-adhesive element, which is attracted to the skin surface by electrostatic attraction
Data Source
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AI summary
A shaver comprises a skin engaging portion and a cutting element, wherein the skin engaging portion comprises a force-generating member that can be selectively activated during use to increase or decrease a force of attraction to the skin of a user. The force- generating members may be electro-adhesive elements. A controller may be provided to selectively activate these elements.